Veneer sheet sorting device, veneer sheet conveying apparatus having the same, and veneer sheet sort

专利摘要:
When a veneer 10 conveyed out by a discharging conveyor 7 is a product veneer 12, a sorting device 20 is rotationally driven to pierce the product veneer 12 with a needle-like body 8a' by a guide member 24 and a push-up member 26 (rolling bearing 26a). When the veneer 10 conveyed out by the discharging conveyor 7 is a veneer offcut 14, the sorting device 20 is rotationally driven so that the veneer offcut 14 is not pierced by the needle-like body 8a'. With this configuration, the progress of the abrasion of the needle-like body 8a' can be delayed as compared with the configuration in which the product veneer 12 and the veneer offcut 14 are both pierced by the needle-like body 8a'. As a result, the time to replace the needlelike body 8a' can be extended, whereby the running cost can be reduced.
公开号:FI20206272A1
申请号:FI20206272
申请日:2018-08-11
公开日:2020-12-09
发明作者:Fumitoshi Ikemoto；Hidetaka Yamada
申请人:Meinan Machinery Works；
IPC主号:

专利说明:

[0001] [0001] The present invention relates to a veneer sheet sorting device configured to sort veneers into product veneers and offcut veneers, the veneers being discharged from a veneer cutting machine and cut into the product veneers and the offcut veneers by a cutter and continuously conveyed out toward a downstream side.
[0002] [0002] Japanese Patent Publication No. 55-23528 (Patent Document 1) discloses a veneer sheet conveying apparatus including a discharging conveyor for conveying out veneers discharged from a veneer cutting machine and cutting into product veneers and offcut veneers by a cutter, a piercing-conveying conveyer disposed above downstream of the discharging conveyor for piercing and conveying the product veneers and the offcut veneers conveyed out by the discharging conveyor with a needle- like body, and a needle removal mechanism for removing N 25 at respective predetermined positions the needle-like N body from the product veneer and offcut veneers conveyed a by the piercing-conveying conveyor to thereby sort the 7 veneers into product veneers and offcut veneers. E [0003] The veneer sheet conveying apparatus has a N 30 structure in which veneers discharged from the veneer S cutting machine and cut into product veneers and veneer N offcuts by the cutter are automatically sorted in the conveyance process and separated into product veneers and offcut veneers thereby improving work efficiency.CITATION LIST
[0004] [0004] Patent Document Patent Document 1: Japanese Patent Publication No. 55-
[0005] [0005] The needle-like body of the piercing-conveying conveyor commonly has a falling-off prevention part that hooks the pierced veneer to prevent the veneer from coming off the needle-like body and fall off therefrom by its own weight when being pierced. Continue use of the needle-like body causes abrasion of the falling-off prevention part and so in order to maintain stable holding and conveying of the veneer, the needle-like body needs to be periodically replaced. In this respect, there is a demand to reduce the running cost by extending as much as possible the time to replace the needle-like body. Work efficiency can be improved in the veneer sheet conveying apparatus described in the above- mentioned publication, however, there is still room for improvement in terms of reducing the running cost.
[0006] [0006] The present invention has been made in view of the above and an object thereof is to provide a N 25 technigue that contributes to the reduction of running N cost when conveying a veneer sheet. a <Solution to the Problem> 7 [0007] A veneer sheet sorting device, a veneer sheet a conveying apparatus including the same, and a veneer N 30 sheet sorting method of the present invention employ the S following means in order to achieve the aforementioned N object.
[0008] [0008] In accordance with a preferred embodiment of a veneer sheet sorting device according to the present invention, the veneer sheet sorting device, which is installed in a veneer sheet conveying apparatus including a discharging unit and a piercing-conveying unit, is configured to sort a veneer conveyed out by the discharging unit into a product veneer and a veneer offcut.
[0010] [0010] According to the present invention, since the veneer sheet sorting device has a configuration in which, out of the veneer conveyed out by the discharging unit, only the product veneer is pierced by the needle- like bodies of the piercing-conveying unit and conveyed to a subsequent process. That is, the present invention is configured such that when the veneer conveyed out by the discharging unit is the veneer offcut, the needle- like bodies of the piercing-conveying unit do not pierce the veneer offcut. Hence, the progress of the abrasion of the needle-like bodies can be delayed as compared with the configuration in which the veneer offcut is also pierced by the needle-like bodies of the piercing- conveying unit and conveyed to a subsequent process. As a result, the time to replace the needle-like bodies can be extended and the running cost can be reduced.
[0011] [0011] In accordance with a further embodiment of the N 25 veneer sheet sorting device according to the present N invention, the veneer sheet sorting device includes an a action section that acts directly on the product veneer 7 and is configured so that the product veneer is guided E toward the piercing-conveying unit by the action N 30 section. Here, "directly acting on a product veneer " in S the present invention literally corresponds to an aspect N in which at least a portion of the action section directly abuts or contacts the product veneer to guide the product veneer toward the piercing-conveying unit. For example, taken into consideration are aspects in which the product veneer is pushed up from below or sucked up from above using a suction cup.
[0013] [0013] In accordance with yet a further embodiment of the veneer sheet sorting device according to the present invention, the action section is configured to be switchable between a guiding state where a distance between at least a portion of the action section and the needle-like bodies is smaller than a thickness of the veneer, and a non-guiding state where the distance is greater than the thickness of the veneer. The action section is configured to be in the guiding state when the veneer is a product veneer, and in the non-guiding state when the veneer is a veneer offcut. In the present invention, an aspect in which a gap is formed between the action section and the needle-like bodies wherein N 25 the gap being smaller than the thickness of the veneer N corresponds to an aspect "the distance between the a action section and the needle-like bodies is smaller 7 than the thickness of the veneer.” However, preferably E included is an aspect in which the gap between the N 30 action section and the needle-like bodies is eliminated S by having a configuration in which the action section N and the needle-like bodies apparently intersect, for example, a configuration in which a portion of the needle-like bodies apparently bites into the action section.
[0014] [0014] According to this embodiment, with a simple configuration of just switching the action section between the guiding state and the non-guiding state, the product veneer can be guided so as to be reliably pierced by the needle-like bodies and the veneer offcut can be guided to the downstream side without being pierced by the needle-like bodies. Consequently, the product veneer and the veneer offcut can be reliably sorted and the transport of the product veneer by the piercing-conveying unit to a subsequent process can be stabilized.
[0015] [0015] In accordance with a further embodiment of the veneer sheet sorting device according to the present invention, the veneer sheet sorting device includes a rotary shaft and a rotary member as the action section integrally mounted to the rotary shaft; wherein the veneer sheet sorting device is configured to be switchable between the guiding state and the non-guiding state by rotation of the rotary shaft. Note that the phrase “integrally mounted to the rotary shaft” in the present invention, in addition to referring to the aspect in which the rotary member is integrally formed N 25 with the rotary shaft, preferably includes an aspect in N which the rotary member is integrated with the rotary a shaft after being separately formed from the rotary 7 shaft. E [0016] According to this embodiment, a simple N 30 configuration in which the rotary shaft is rotated makes S it possible to switch the state between the guiding N state and the non-guiding state.
[0017] [0017] In accordance with yet a further embodiment of the veneer sheet sorting device according to the present invention, the action section includes a first lifting part configured to be capable of lifting a downstream end portion of the product veneer, and an assisting part for assisting the piercing of a needle-like bodies into the product veneer.
[0018] [0018] According to this embodiment, it is possible to reliably lift only the product veneer from among the product veneer and the offcut veneer that are continuously conveyed out to thereby guide the product veneer toward the piercing-conveying unit, and the needle-like bodies are able to be reliably pierced into the product veneer guided to the piercing-conveying unit. Thus, conveying the product veneer to a subsequent process by piercing-conveying unit can be stabilized.
[0019] [0019] In accordance with yet a further embodiment of the veneer sheer sorting device according to the present invention in which the action section includes the rotary shaft and the rotary member, the rotary member further includes a second lifting part for lifting an upstream end portion of the product veneer.
[0020] [0020] According to this embodiment, it is possible to reliably lift only the product veneer from among the product veneer and the offcut veneer that are N 25 continuously conveyed out to thereby guide the product N veneer toward the piercing-conveying unit. a [0021] In accordance with yet a further embodiment of 7 the veneer sheet sorting device according to the present E invention, the action section has an inclined surface N 30 which is inclined upward toward the downstream side when S entering the guiding state. The action section is N configured so that the inclined surface thereof guides the product veneer towards the piercing-conveying unit.
[0022] [0022] According to this embodiment, the product veneer can be smoothly guided toward the piercing- conveying unit.
[0023] [0023] In accordance with yet a further embodiment of the veneer sheet sorting device according to the present invention, the inclined surface 1s configured as a circular arc surface so that the distance of the inclined surface from the axis line of the rotary shaft is constant. The first lifting part, the assisting part, and the second lifting part are connected each other by the circular arc surface.
[0024] [0024] According to this embodiment, when the product veneer is guided to the piercing-conveying unit while the rotary member is rotating, the piercing state of the needle-like bodies with respect to the product veneer, that is, the piercing depth can be kept constant. With this configuration, conveyance of the product veneer by the piercing-conveying unit can be stabilized.
[0025] [0025] In accordance with yet a further embodiment of the veneer sheet sorting device according to the present invention, the veneer sheet sorting device further includes a push-up section capable of pushing up at least a part of the mounting surface in a direction approaching the needle-like bodies, and is configured N 25 such that the push-up section pushes up at least a part N of the mounting surface to thereby guide the product a veneer toward the piercing-conveying unit. 7 [0026] According to this embodiment, the product E veneer can be guided toward the piercing-conveying unit N 30 with a simple configuration since at least a part of the S mounting surface is merely pushed up in the direction N approaching the needle-like bodies. In the case of employing the configuration in which the push-up section is mounted together with the action section, the action section guides the product veneer to the needle-like bodies in a state where the mounting surface is brought close to the needle-like bodies by the push-up section. Therefore, the behavior of the product veneer towards the needle-like bodies can be reduced to a small level as compared with the configuration without the push-up section. As a result, the occurrence of buckling of the product veneer can be decreased, and the occurrence of drawbacks such as the clogging of sheets can be decreased.
[0027] [0027] In accordance with yet a further embodiment of the veneer sheet sorting device according to the present invention, the push-up section has a second rotary member integrally and eccentrically mounted to the rotary shaft. The second rotary member is configured to abut the lower side of the mounting surface in accordance with the rotation of the rotary shaft so as to push up the mounting surface. Note that the phrase “integrally mounted to the rotary shaft” in the present invention, in addition to referring to the aspect in which the push-up section is integrally formed with the rotary shaft, preferably includes an aspect in which the push-up section is integrated with the rotary shaft N 25 after being separately formed from the rotary shaft. N [0028] According to this embodiment, at least a part a of the mounting surface can be pushed up in a direction 7 approaching the needle-like bodies with a very simple E configuration of rotating the rotary shaft. N 30 [0029] In accordance with a preferred embodiment of a S veneer sheet conveying apparatus according to the N present invention, the veneer sheet conveying apparatus is configured to convey a veneer that is discharged from a veneer cutting machine and cut into a product veneer and veneer offcut by a cutter. The veneer sheet conveying apparatus includes a discharging unit, a piercing-conveying unit, the veneer sheet sorting device according to any one of the above-described aspects of the present invention, and a control device for controlling the veneer sheet conveying apparatus. The discharging unit has a mounting surface for placing the veneer cut by the cutter and is configured to continuously convey out the product veneer and the offcut veneer toward a downstream side of the discharging unit. In addition, the piercing-conveying unit has a plurality of needle-like bodies and is configured to be disposed above the discharging unit so that the needle-like bodies are opposed to the mounting surface of the discharging unit so as to be capable of transporting the veneer toward a subsequent process.
[0030] [0030] According to this embodiment, given that the configuration thereof includes the veneer sheet sorting device according to the present invention of any one of the above-mentioned aspects, the same effects as those exhibited by the veneer sheet sorting device of the present invention are achieved, for example, delaying the progress of the abrasion of the needle-like bodies. N 25 Thereby, the time to replace the needle-like bodies can N be extended and the effect of being able to reduce the a running cost can be achieved. 7 [0031] In accordance with a further embodiment of the E veneer sheet conveying apparatus according to the N 30 present invention of the aspect in which the veneer S sheet sorting device includes the action section N including the first lifting part and the assisting part, the control device drive-controls the veneer sheet sorting device so that the first lifting part of the action section lifts up the downstream end portion of the product veneer. The control device also drive- controls the veneer sheet sorting device so that the action section is in the assisting state in which the assisting part assists the piercing of the needle-like bodies into the product veneer, and the control device further drive-controls the veneer sheet sorting device to temporarily stop the operation of the action section when the action section is in the assisting state.
[0032] [0032] According to this embodiment, since the configuration thereof is that the operation of the action section is temporarily stopped while the action section is maintained in the assisting state, the needle-like bodies can be reliably and stably pierced into the product veneer that is being guided toward the piercing-conveying unit. Thus, conveying the product veneer to a subsequent process by pilercing-conveying unit can be stabilized.
[0033] [0033] In accordance with a further embodiment of the veneer sheet conveying apparatus according to the present invention, the control device drive-controls the veneer sheet sorting device so that the conveying speed of the action section to convey the product veneer N 25 toward the piercing-conveying unit is substantially the N same as the conveying-out speed of the veneer conveyed a by the discharging unit at least when the downstream end 7 portion of the product veneer is being lifted by the E first lifting part. N 30 [0034] According to this embodiment, the present S invention ensures reliable lifting of only the product N veneer from the product veneer and the offcut veneer which are continuously conveyed out, and to guide the product veneer toward the piercing-conveying unit.
[0035] [0035] In accordance with a further embodiment of the veneer sheet conveying apparatus according to the present invention of the aspect in which the veneer sheet sorting device includes the action section including the second lifting part, the control device drive-controls the veneer sheet sorting device so that the conveying speed of the rotary member to convey the product veneer toward the piercing-conveying unit is substantially the same as the conveying-out speed of the veneer conveyed by the discharging unit at least when the upstream end portion of the product veneer is lifted by the second lifting part.
[0036] [0036] According to this embodiment, the present invention ensures reliable lifting of only the product veneer from the product veneer and the offcut veneer which are continuously conveyed out, and to guide the product veneer toward the piercing-conveying unit.
[0037] [0037] In accordance with yet a further embodiment of the veneer sheet conveying apparatus according to the present invention, the veneer sheet conveying apparatus further includes a signal transmission member that transmits a signal upon cutting of the veneer into the product veneer and the veneer offcut by the cutter. N 25 Then, the control device drive-controls the veneer sheet N sorting device based on the transmitted signal. a [0038] According to this embodiment, a boundary 7 between the cut veneers can be surely recognized by a transmitting a signal upon cutting of the veneer. The N 30 present invention is configured to separate a product S veneer and an offcut veneer based on this boundary and N thus capable of reliably sorting the product veneer and offcut veneer which are being successively conveyed out.
[0039] [0039] In accordance with yet a further embodiment of the veneer sheet conveying apparatus according to the present invention, the veneer sheet conveying apparatus is configured such that the veneer cut by the cutter is conveyed toward the veneer sheet sorting device in a state where a predetermined interval is secured between the cut veneer.
[0040] [0040] According to this embodiment, due to the boundary between the cut veneer being made clear, the sorting of product veneer and offcut veneer by the sorting apparatus can be facilitated.
[0041] [0041] In accordance with yet a further embodiment of the veneer sheet conveying apparatus according to the present invention, the veneer sheet conveying apparatus further includes a loading unit configured to transport to the cutting machine the veneer discharged from the veneer cutting machine. The veneer sheet conveying apparatus is configured to make a conveying-in speed of the veneer conveyed by the loading unit different from a conveying-out speed of the veneer conveyed by the discharging unit whereby a predetermined interval is secured between the veneers.
[0042] [0042] According to this embodiment, the predetermined interval can be easily provided between the cut veneers N 25 by only making a difference between the conveying-in N speed of the veneers conveyed by the loading unit and a the conveying-out speed of the veneers conveved by the 7 discharging unit. E [0043] In accordance with a preferred embodiment of a N 30 veneer sheet sorting method according to the present S invention, the veneer sheet sorting method of the veneer N sheet conveying apparatus including the discharging unit and the piercing-conveying unit sorts the veneer conveyed out by the discharging unit into a product veneer and a veneer offcut. The discharging unit is configured to have a mounting surface for placing the veneer discharged from the veneer cutting machine and cut into the product veneer and the veneer offcut by the cutter and to continuously convey the product veneer and the veneer offcut toward the downstream side. The piercing-conveying unit is configured to have a plurality of needle-like bodies and is disposed above the discharging unit so that the needle-like bodies are opposed to the mounting surface of the discharging unit and capable of conveying the veneer toward a subsequent process. The veneer sheet sorting method sorts the veneer by guiding (a) the product veneer toward the piercing-conveying unit so that the needle-like bodies are pierced into the product veneer when the veneer is the product veneer, and (b) the veneer offcut to the downstream side so as not to be pierced by the needle- like bodies when the veneer is the veneer offcut,.
[0044] [0044] According to the present invention, a configuration thereof is that out of the veneer conveyed out by the discharging unit, only the product veneer is pierced by the needle-like bodies of the piercing- conveying unit and conveyed to a subsequent process. N 25 That is, the present invention is configured such that N when the veneer conveyed out by the discharging unit is a the veneer offcut, the needle-like bodies of the 7 piercing-conveying unit do not pierce the veneer offcut. a Hence, the progress of the abrasion of the needle-like N 30 bodies can be delayed as compared with the configuration S in which the veneer offcut is also pierced by the N needle-like bodies of the piercing-conveying unit and conveyed to the subsequent process. As a result, the time to replace the needle-like bodies can be extended and the running cost can be reduced.
[0045] [0045] According to the present invention, the technique that contributes to running cost reduction can be provided for conveying veneers.BRIEF DESCRIPTION OF THE DRAWINGS
[0046] [0046] FIG. 1 is a schematic block diagram illustrating the outline of a structure of a veneer conveying apparatus 1 that includes a sorting device 20 according to an embodiment of the present invention.
[0047] [0047] Next, the best mode for carrying out the N 25 present invention will be described using exemplary N embodiments. o Embodiment 1 I [0048] As illustrated in FIG. 1, a veneer sheet E conveying apparatus 1 according to an exemplary N 30 embodiment of the present invention is composed of: a S rotary lathe 2 for peeling veneer 10 from a log-shaped N raw wood L; a cutting device 4 for cutting the veneer 10 into product veneer 12 and a veneer offcut 14 (refer to
[0049] [0049] The rotary lathe 2 is configured as a cutting device and has a spindle 2a that clamps the central parts of both end faces of the log-shaped raw wood I in the longitudinal direction, and while spinning the raw wood L around the axis of the spindle 2a, a cutter 2b is moved so as to approach the raw wood 1 by a distance corresponding to a desired thickness to be peeled for each rotation of the spindle 2a to thereby peel off a continuous slice of the veneer 10 having the desired thickness from the raw wood L (rotary cut type). The rotary lathe 2 is an example of an implementation configuration corresponding to the “veneer cutting machine” in the present invention.
[0050] [0050] The cutting device 4 is configured as a device for cutting the veneer 10 into the product veneer 12 and the veneer offcut 14 (refer to FIG. 6) at boundaries K, M, and 0 to be described later, and includes a rotary blade 4a mainly for cutting the veneer 10 that are conveyed thereto, a rotary table 4b to which the rotary blade 4a is fixed, and an anvil roll 4c that serves as a cutting board when the rotary blade 4a cuts the veneer
[0052] [0052] The loading conveyor 6 is configured as a conveyor belt for conveying to the cutting device 4 the veneer 10 peeled by the rotary lathe 2, and a pulse generator 6a is attached to a rotary shaft that N 25 rotationally drives the loading conveyor 6 as N illustrated in FIG. 1. A predetermined number of pulse a signals is output from the pulse generator 6a in 7 accordance with the loading conveyor 6 conveying a a predetermined number of the veneer 10. The moving amount N 30 of the veneer 10 transported can be obtained from the S conveyance amount of the loading conveyor 6 per pulse N signal and the integrated value of the pulse signals. The loading conveyor 6 is an example of an implementation configuration corresponding to the “loading unit” in the present invention.
[0053] [0053] Further, the loading conveyor 6 includes numerous veneer shape detection sensors 62 for detecting the shape of the veneer 10 conveyed by the loading conveyor 6. The plurality of the veneer shape detection sensors 62 are arranged in series along the left-right direction orthogonal to the conveyance direction of the veneer 10 (from the upstream side toward the downstream side). As for the veneer shape detection sensors 62, in the present embodiment, a configuration is adopted in which six veneer shape detection sensors 62a, 62b, 62c, 62d, ©62e, and 62f are arranged in order from right to left as illustrated in FIG. 6. Also, regarding the veneer shape detection sensors 62, it is desirable to use non-contact type sensors respectively, for example a photoelectric tube, in order to avoid the jamming of veneers.
[0054] [0054] The discharging conveyor 7 is configured as a conveyor belt for conveying the veneer 10 (the product veneer 12 and the veneer offcut 14) cut by the cutting device 4, and as illustrated in FIG. 7, has three belts 7a, 7b and 7c arranged at equal intervals in a direction (the left and right direction in FIG. 6) orthogonal to N 25 the conveying direction (upper direction in FIG. 6). As N illustrated in FIG. 2, the belts 7a, 7b, and 7c have a mounting surfaces 7a’, 7b', and 7c' on which the veneer 7 10 is placed (only the belt 7c and the mounting surface E 7c' are described in FIG. 2). Also, as illustrated in N 30 FIG. 1, a pulse generator 7d is attached to a rotary S shaft that rotationally drives the discharging conveyor N 7. A predetermined number of pulse signals is output from the pulse generator Ja in accordance with a predetermined number of the veneers 10 (the product veneers 12 and the veneer offcuts 14) the discharging conveyor 7 conveys. The number of the veneers 10 (the product veneers 12 and the veneer offcuts 14) transported can be obtained from the conveyance amount of the discharging conveyor 7 per pulse signal and the integrated value of the pulse signals. The discharging conveyor 7 is an example of an implementation configuration corresponding to the "discharging unit” in the present invention, and the mounting surfaces 7a’, 7b', and Tc! are examples of an implementation configuration corresponding to the "mounting surface” in the present invention.
[0055] [0055] The sorting device 20 according to the embodiment of the present invention is, as illustrated in FIG. 1, disposed at a position adjacent to a support shaft Je at the downstream end of the discharging conveyor 7. As illustrated in FIGs. 2 and 3, the sorting device 20 includes a rotary shaft 22, and a guiding member 24 and a push-up member 26 both integrated with the rotary shaft 22. To correspond to each of the three belts 7a, 7b, and 7c of the discharging conveyor 7, in the present embodiment, a configuration is adopted in which three sorting devices 20 are respectively disposed N 25 in the arrangement direction of the belts 7a, 7b, and 7c N (the left and right direction in FIG. 5) as illustrated a in FIG. 5. It should be noted that, among the three 7 sorting devices 20, as illustrated in FIG. >5, the E sorting devices 20 disposed at both ends in the N 30 arrangement direction (left and right direction in FIG. S 5) have an inverted relationship with each other, that N is, the sorting device 20 disposed at the right end is disposed in a state in which the sorting device 20 disposed at the left end is horizontally reversed. The sorting device 20 is an example of an implementation configuration corresponding to the "veneer sheet sorting device” in the present invention.
[0056] [0056] As illustrated in FIG. 5, the rotary shaft 22 is disposed so as to extend in a direction (left and right direction in FIG. 5) orthogonal to the conveying direction (direction from the front to the far side of FIG. 5) (so that the rotary shaft 22 extends in a direction parallel to the axial direction of the support shaft 7e of the discharging conveyor 7), and a motor 23 is connected to one end of the rotary shaft 22 as illustrated in FIG. 3. The rotary shaft 22 is configured to be rotationally driven by the motor 23.
[0057] [0057] As illustrated in FIG. 3, the guiding member 24 includes a pair of guiding plates 32a and 32b, and a connecting boss portion 32c disposed so as to be held between the pair of guiding plates 32a and 32b for connecting the pair of guiding plates 32a and 32b. The guiding member 24 is an example of an implementation configuration corresponding to the "action section" and the "rotary member” in the present invention.
[0058] [0058] As illustrated in FIG. 3, the pair of guiding plates 32a and 32b are separated from each other by a N 25 predetermined clearance by the connecting boss portion N 32c. It is to be noted that since the guiding plates 32a a and 32b basically have the same configuration with each 7 other, for convenience of explanation, the guiding plate a 32a will be described as an example in the following N 30 whereas the description of the guiding plate 32b will be S omitted. N [0059] As illustrated in FIG. 4, the guiding plate 32a is configured in a substantially fan shape centered on the center of the rotary axis of the rotary shaft 22, and includes a rim portion 33a having an arc surface 33a', a hub portion 33b fastened to the rotary shaft 22, and web portions 33c and 33d coupling between the rim portion 33a and the hub portion 33b.
[0061] [0061] As illustrated in FIG. 3, the push-up member 26 includes a rolling bearing 26a and a boss member 26b that fixes the rolling bearing 26a to the rotary shaft
[0062] [0062] The push-up member 26 thus constructed is configured to abut against the back surface of the belts 7a, 7b, and 7c (only the belt 7c is illustrated in FIG. 3) when rotated with the rotation of the rotary shaft 22, thereby pushing up the belts 7a, 7b, and 7 (only the belt % is illustrated in FIG. 3) from under (the lower side in FIG. 3) as illustrated in FIG. 3. The amount of the belts 7a, 7b, and 7c being pushed up by the push-up member 26 (rolling bearing 26a) 1s maximum at a position corresponding to approximately the central part in the circumferential direction of the connecting portion 35c of the rim portion 33a.
[0063] [0063] As illustrated in FIG. 2, the piercing- conveying conveyor 8 is disposed above the discharging conveyor 7 and includes a belt body 8a having a plurality of needle-like bodies 8a’, a deflection N 25 suppressing pulley 8b for suppressing the deflection of N the belt body 8a, a swinging needle removal claw 8c, and a a fixed needle removal claw 8d. The piercing-conveying 7 conveyor 8 is an example of an implementation E configuration corresponding to the "piercing and N 30 conveying unit” in the present invention. S [0064] The deflection suppressing pulley 8b is N configured as a roller member. In the present embodiment, as illustrated in FIG. 5, a configuration is adopted in which two belt bodies 8a are arranged in a direction (left and right direction in FIG. 5) orthogonal to the conveying direction (direction from the front to the far side of FIG. 5). The pair of belt bodies 8a is disposed at a position corresponding to the upper side of the guiding member 24 of the sorting device 20 disposed on both sides out of the three sorting devices 20. Further, the needle-like body 8a’ has a falling preventing portion 18 where a veneer 10 (product veneer 12) is caught rendering the veneer 10 (product veneer 12) not to fall off therefrom by its own weight when the veneer 10 (product veneer 12) is pierced by the needle-like body 8a' (refer to FIG. 3). As illustrated in FIG. 4, note that the deflection suppression pulley 8b is installed on the piercing- conveying conveyor 8 so that the center of the deflection suppressing pulley 8b is disposed on a straight line VL which passes through the rotation axis center of the rotary shaft 22.
[0065] [0065] The control device 80 is configured as a microprocessor with a central CPU, and includes, in addition to the CPU, a ROM that stores processing programs, a RAM that stores data temporarily, and an input/output port and a communication port. The control N 25 device 80 receives signals such as veneer shape N detection signals from the veneer shape detection a sensors 62 (62a, 62b, 62c, 62d, 62e, 62f), cutting 7 signals from the cutting detection sensor 64, pulse E signals from the pulse generators 6a and 7d, and the N 30 driving state of the motor 23, and those signals are S inputted through the input port. In addition, drive N signals from the control device 80 to the cutting device 4, the loading conveyor 6, the discharging conveyor 7,
[0066] [0066] Next, an operation of the veneer sheet conveying apparatus 1 thus configured, in particular, an operation of the sorting device 20 at the time of sorting the veneer 10 continuously conveyed out by the discharging conveyor 7 into the product veneer 12 and the veneer offcut 14 will be described. In the veneer sheet conveying apparatus 1 according to an exemplary embodiment of the present invention, the veneer 10 peeled from the raw wood L by the rotary lathe 2 are conveyed to the cutting device 4 by the loading conveyor 6, and then conveyed to the sorting device 20 by the discharging conveyor 7 after being cut into the product veneer 12 and veneer offcut 14 by the cutting device 4. Then, the veneer 10 are sorted into the product veneer 12 and the veneer offcut 14 by the sorting device 20, and thereafter only the product veneer 12 are conveyed to the transport conveyors 72 and 74 by the piercing- conveying conveyor 8 whereas the veneer offcut 14 are transported from the discharging conveyor 7 to the offcut conveyor 76. The product veneer 12 conveyed to the transport conveyors 72 and 74 are stacked in corresponding deposition boxes 72a and 74a, N 25 respectively. The veneer offcut 14 conveyed to the N offcut conveyor 76 are deposited in a deposition box not a shown in the drawing. 7 [0067] FIG. 7 is a flowchart illustrating an example a of a main control process routine executed by the CPU of N 30 the control device 80. This process is performed when S the veneer sheet conveying apparatus 1 is powered on. N When the main control process routine is executed, the following processes are repeatedly executed: a boundary setting process (S10) exemplified in FIGs. 8 and 9, a cutting process (S20) exemplified in FIG. 10; a distribution process (S30) exemplified in FIG. 11; and a sorting process (s40) exemplified in FIG. 12. The boundary setting process is a process repeatedly executed when the veneer 10 peeled by the rotary lathe 2 are conveyed to the cutting device 4 by the loading conveyor 6, and the cutting process is a process that is repeatedly executed when the veneer 10 are cut by the cutting device 4. The distribution process is a process repeatedly executed when the veneer 10 cut by the cutting device 4 and continuously conveyed out by the discharging conveyor 7 are separated into the product veneer 12 and the veneer offcut 14 by the sorting device
[0068] [0068] In the boundary setting process routine, as illustrated in FIG. 8 and FIG. 9, the CPU of the control device 80 first determines whether the veneer shape detection sensors 62a to 62c are turned ON (step S100). If the veneer shape detection sensors 62a to 62c are ON, N 25 then determination is made as to whether the sensors are N continuously in the ON state for the length of a first a predetermined time (step S102). Here, the first 7 predetermined time is set as a conveying time of a a veneer 10 conveyed by the loading conveyor 6 that N 30 corresponds to a length dimension in which the short end S veneer 12b can be procured (refer to FIG. 6). Note that N the short end veneer 12b, though not meeting the defined standard dimensions, is defined as a veneer which satisfies a predetermined dimension and from which a product can be obtained.
[0069] [0069] If it is determined that the veneer shape detection sensors 62a to 62c are not turned ON in step 5100, then the process of step S100 is repeatedly executed until the veneer shape detection sensors 62a to 62c are turned ON. Further, when it is determined in step S102 that the veneer shape detection sensors 62a to 62c are not continuously in the ON state for the length of first predetermined time, the process of steps S100 to S102 are repeatedly executed until the ON state of the veneer shape detection sensors 62a to 62c continues for the first predetermined time.
[0070] [0070] In step S102, when it is determined that the ON state of the veneer shape detection sensors 62a to 62c has continued for the length of the first predetermined time, then determination is made on the state of a boundary K setting flag Fk that indicates whether or not the boundary K between the upstream end portion of the veneer offcut 14 and the downstream end portion of the product veneer 12 is set (step S104). Here, the boundary K setting flag Fk has a value of 1 when the boundary K is already set and the boundary M corresponding to the boundary K is not yet set, whereas when the boundary K N 25 is not vet set or when the boundary K and the boundary M N corresponding to the boundary K have already been set, a the boundary K setting flag Fk has a value of 0. Note 7 that, as illustrated in FIG. 6, the boundary K is set as E the boundary between the upstream end portion of the N 30 veneer offcut 14 and the downstream end portion of the S product veneer 12 as described above, and the boundary M N is set as a boundary between the upstream end portion of the product veneer 12 and the downstream end portion of the veneer offcut 14.
[0071] [0071] When the operation of the veneer sheet conveying apparatus 1 is started, the boundary K is not set and therefore the boundary K setting flag Fk is set to the value 0. On the assumption that the operation of the veneer sheet conveying apparatus 1 has now started, it is determined that the value of the boundary K setting flag Fk is 0. The position where the veneer shape detection sensors 62a to 62c are first turned ON is set as the boundary K (step S106) and the boundary K setting flag Fk is set to the value 1 (step S108), and then determination is made as to whether all the veneer shape detection sensors 62a to 62f are turned ON (step S110). Note that when the process routine is not executed for the first time and the boundary K is already set but the boundary M corresponding to the boundary K has not been set, then step S110 is performed without performing steps S106 and S108 since the boundary K setting flag Fk is set to the value of 1.
[0072] [0072] When determination is made in step S110 that the veneer shape detection sensors 62a to 62f are all ON, then the process proceeds to determine whether the sensors are continuously ON for the length of a second predetermined time (step S112). Here, the second N 25 predetermined time is set as a conveyance time of a N veneer 10 conveyed by the loading conveyor 6 that a corresponds to a length dimension in which the standard- 7 length veneer 12a can be obtained (refer to FIG. 6). In E addition, the standard-length veneer 12a is defined as a N 30 veneer that satisfies the standard dimension defined as S a product. N [0073] When the ON state of the veneer shape detection sensors 62a to 62c continues for the second predetermined time, then determination is made on the state of a boundary O setting flag Fo that indicates whether or not the boundary 0 as a cutting location for acquiring the standard-length veneer 12a from among the product veneer 12 is set (step S114). Here, the boundary O setting flag Fo has a value of 1 when the boundary O is already set, and has a value of 0 when the boundary O is not yet set. In addition, as illustrated in FIG. 6, the boundary 0 is set as a boundary for acquiring the standard-length veneer 12a from among the product veneer 12 as described above.
[0074] [0074] When the operation of the veneer sheet conveying apparatus 1 is started, the boundary 0 is not set, and therefore the boundary O setting flag Fk is set to the value of 0. On the assumption that the operation of the veneer sheet conveying apparatus 1 has now started, it is determined that the value of the boundary 0 setting flag Fo is O. The position where all the veneer shape detection sensors 62a to 62f are first turned ON is set as the boundary 0, and the position after which the second predetermined time has elapsed is also set as the boundary O (step S116), and then the boundary O setting flag Fo is set to the value of 1 (step S118). On the other hand, when the process routine N 25 is not executed for the first time and the boundary O is N already set, the position after which the second a predetermined time has elapsed is set as the boundary O 7 (step S126) because the boundary O setting flag Fo is E set to the value of 1. N 30 [0075] Subseguently, the process to determine whether S the veneer shape detection sensor 62a is turned OFF is N performed (step S120). When it is determined in step S110 that all the veneer shape detection sensors 62a to
[0076] [0076] In step S120, when it is determined that the veneer shape detection sensor 62a 1s not turned OFF, that is, when it is determined that the veneer shape detection sensor 62a is still ON, the processes from step S100 to step S120 are repeatedly executed until it is determined that the veneer shape detection sensor 62a is turned OFF.
[0077] [0077] On the other hand, when it is determined that the veneer shape detection sensor 62a is turned OFF, the position where the veneer shape detection sensor 62a is turned OFF is set as the boundary M (step S122), and thereafter the boundary K setting flag Fk and the boundary O setting flag Fo are both set to the value of 0 (step S124), and the process routine is terminated. Accordingly, as illustrated in FIG. 6, boundaries K, O, and M are set on the veneer 10 peeled by the rotary lathe 2. It is to be noted that the set boundaries K, O, and M are stored in a predetermined area of the RAM of the control device 80. N 25 [0078] The cutting process routine is described next. N In the cutting process routine, as illustrated in FIG. a 10, the CPU of the control device 80 first determines 7 whether boundaries K, 0 and M have reached the cutting E position according to the cutting device 4 (step S200). N 30 Here, since it takes time to reach the state where the S cutting edge of the rotary blade 4a bites into the anvil N roll 4c after the driving of the cutting device 4 has been started (until the cutting edge comes to a position where it bites into anvil roll 4c (hereinafter referred to as “cutting edge position”)), the cutting position is set upstream than the cutting edge position by only a distance in which the veneer 10 (product veneer 12 and veneer offcut 14) are conveyed during the time required for the cutting edge of the rotary blade 4a to bite into the anvil roll 4c (until the rotary blade 4a reaches to the cutting edge position) after the driving of the cutting device 4 has been started. In the present exemplary embodiment, a configuration thereof to determine if the respective boundaries K, 0, and M have reached the cutting position is performed by obtaining the amount of movement of each boundaries K, 0, and M (conveyance number of the veneer 10) from the point where the veneer shape detection sensor 62 (62a, 62k, 62c, 62d, 62e, 62f), which has become the base point where the boundaries K, 0, and M are set by the boundary setting process routine, is turned ON or OFF and determining whether or not the amount of movement of each boundaries K, 0, and M (conveyance number of the veneer 10) is equal to the distance from the veneer shape detection sensor 62 (62a, 62b, 62c, 62d, 62e, 62£) to the cutting position.
[0079] [0079] If it is determined that the boundaries K, O, N 25 and M have reached the cutting position, the cutting N device 4 is drive-controlled to cut at the boundaries K, a 0, and M (step S202), and the process exits the process 7 routine. A cutting signal is output from the cutting E detection sensor 64 at the instant when the veneer 10 is N 30 cut at the boundaries K, 0, and M. Accordingly, the S veneer 10 are each cut at the boundaries K, 0, and M set N in the above-described boundary setting process routine, whereby the veneer 10 are each separated into a plurality of product veneer 12 and offcut veneer 14 (refer to FIG. 6). Further, the veneer 10 cut into the plurality of product veneer 12 and the offcut veneer 14 are continuously discharged to the discharging conveyor
[0080] [0080] Here, in the present exemplary embodiment, the conveying speed of the discharging conveyor 7 for conveying the veneer 10 discharged from the cutting device 4 is set to a speed slightly higher than the conveying speed of the loading conveyor 6 for conveying the veneer 10 into the cutting device 4. With this configuration, the conveying-out amount per unit time of the veneer 10 after cutting (the product veneer 12 or the veneer offcut 14) located on the downstream side across the cutting device 4 becomes greater than the veneer 10 located on the upstream side across the cutting device 4 before cutting, and as a result, predetermined gaps G (refer to FIG. 13) are set at boundaries K, 0, and M.
[0081] [0081] On the other hand, when it is determined in step S200 that the boundaries K, 0, and M have not reached the cutting position, the process of step 5200 is repeatedly executed until the boundaries K, 0, and M reach the cutting position. In this way, the veneer 10 N 25 peeled by the rotary lathe 2 are cut into the product N veneer 12 and the veneer offcut 14. a [0082] Next, the distribution process routine is 7 described. In the distribution process routine, as E illustrated in FIG. 11, the CPU of the control device 80 N 30 first reads the cutting signal from the cutting S detection sensor 64 (step S300) and determines whether N to start the driving of the sorting device 20 or not (step S302). In the present exemplary embodiment, the determination of whether to start the driving of the sorting device 20 or not is configured to be performed by determining whether the boundary K has reached a predetermined position based on the read cutting signal, that is, by obtaining the travel distance of the boundary K from the time the cutting signal is transmitted when the boundary K is cut to thereby determine whether the travel distance is equal to the distance from the cutting edge position (cutting detection sensor 64) to the predetermined position.
[0083] [0083] Here, the driving of the sorting device 20 is started and time is required for the sorting device 20 to reach the lifting start position illustrated in FIG. 14 from the standby position illustrated in FIG. 13, and therefore the predetermined position is set upstream than the lifting start position by only a distance in which the veneer 10 (the product veneer 12) is conveyed during the time required for the projecting end portion 35a to reach the lifting start position from the standby position. Note that the term "lifting start position” is defined as the position at which the projecting end portion 35a of the guiding member 24 of the sorting device 20 abuts against the boundary K as illustrated in FIG. 14, that is, the position where the projecting end N 25 portion 35a starts raising the downstream end portion of N the product veneer 12. a [0084] Then, when it is determined in step 302 not to 7 start the drive of the sorting device 20, then the a process of step S302 is repeatedly executed until it is N 30 determined that the drive of the sorting device 20 is S started. On the other hand, when it is determined in N step 302 to start the drive of the sorting device 20, the sorting device 20 is drive-controlled so that the guiding member 24 is in the piercing position and that the guiding member 24 stops at the piercing position (step S304). Specifically, the motor 23 is drive- controlled to control the sorting device 20. As illustrated in FIG. 16, in this exemplary embodiment, the term "piercing position” is defined as approximately the central part in the circumferential direction of the connecting portion 35c (arc surface 33a’) of the guiding member 24 on a straight line VL connecting the rotation axis center of the rotary shaft 22 and the center of the deflection suppressing pulley 8b, and a position where approximately the central part in the circumferential direction (arc surface 33a') of the connecting portion 35c is closest to the belt body 8a of the piercing- conveying conveyor 8. The distance between the arc surface 33a’ of the guiding member 34 and the tip of the needle-like body 8a’ on the straight line VL is smaller than the thickness of the veneer 10 at the “piercing position.” More specifically, the tip of the needle-like body 8a' on the straight line VL is configured to be disposed lower than the arc surface 33a’ as illustrated in FIG. 3. The state in which the guiding member 24 is in the piercing position is an example of the implementation configuration corresponding to the
[0086] [0086] In the present exemplary embodiment, the sorting device 20 is configured to be controlled to operate at a rotating speed that can guide the product veneer 12 toward the piercing-conveying conveyor 8 at substantially the same speed as the conveying speed of the veneer 10 conveyed by the discharging conveyor 7 at least by the time when the sorting device 20 reaches the lifting start position. The configuration in which the tip of the needle-like body 8a' located on the straight line VL at the "piercing position" is disposed lower than the arc surface 33a’ is an example of an implementation configuration corresponding to "the distance between the action section and the needle-like body is configured to be smaller than the thickness of the veneer” in the present invention. In addition, the piercing position is an example of an implementation configuration corresponding to the "assisting state” in the present invention.
[0087] [0087] Thus, when the guiding member 24 of the sorting device 20 is rotated to the piercing position and stopped in this state, determination whether to resume the driving of the sorting device 20 or not is executed N 25 (step S300). In the present exemplary embodiment, the N determination of whether to resume the driving of the a sorting device 20 or not is configured to be performed 7 by determining whether the boundary M has reached a E second predetermined position based on the read cutting N 30 signal, that is, by obtaining the travel distance of the S boundary M from the time the cutting signal is N transmitted when the boundary M is cut to thereby determine whether the travel distance is equal to the distance from the cutting edge position (cutting detection sensor 64) to the second predetermined position.
[0088] [0088] Here, the sorting device 20 reguires time to reach the lifting end position illustrated in FIG. 17 from the piercing position illustrated in FIG. 16, and therefore the second predetermined position is set upstream than the lifting end position by only a distance in which the veneer 10 (product veneer 12) is conveyed during the time required for the corner end portion 35b to reach the lifting end position from the piercing position. Note that the term "lifting end position” is defined as the position at which the corner end portion 35b of the guiding member 24 of the sorting device 20 abuts against the boundary M as illustrated in FIG. 17, that is, the position where the corner end portion 35b stops raising the upstream end portion of the product veneer 12.
[0089] [0089] Then, when it is determined in step 306 that the drive of the sorting device 20 is to be resumed, the sorting device 20 is driven so that the guiding member 24 of the sorting device 20 is at the standby position, specifically, by drive-controlling the motor 23 (step 5308), and the process exits the process routine. On the N 25 other hand, when it is determined in step 306 that the N drive of the sorting device 20 is not to be resumed, the a process of step S306 is repeatedly executed until it is 7 determined that the drive of the sorting device 20 is E resumed. The distribution process routine executed by N 30 the control device 80 is an example of an implementation S configuration corresponding to "the sorting device is N drive-controlled based on a signal” in the present invention.
[0090] [0090] Next, the sorting process routine is described.
[0092] [0092] Then, when the boundary K of the veneer 10 reaches the predetermined position on the discharging conveyor 7, drive control is performed until the sorting device 20 reaches the piercing position (step S304).
[0093] [0093] Here, the predetermined gap G is set at the boundary K of the veneer 10 conveyed by the discharging conveyor 7, which allows the projecting end portion 3ba of the guiding member 24 to reliably abut (insert) on the boundary K. Therefore, only the product veneer 12 can be reliably lifted. Since the projecting end portion 35a is configured to have a shape that protrudes further than the web portion 33d in the circumferential direction, the abutment (insertion) of the projecting end portion 35a with the boundary K can be made more S 25 reliable. A [0094] After the projecting end portion 35a of the a guiding member 24 lifts the downstream end portion of 7 each of the product veneer 12, the guiding member 24 and E the push-up member 26 are further rotated together with N 30 the rotary shaft 22. As illustrated in FIG. 15, the S connecting portion 35c starts to guide the product N veneer 12 lifted by the projecting end portion 35a of the guiding member 24 toward the piercing-conveying conveyor 8 to start the piercing of the needle-like body 8a' into the product veneer 12, and the push-up member 26 (rolling bearing 26a) also begins pushing up the belts 7a, 7b, and 7c (only the belt 7c is illustrated in FIG. 15) of the discharging conveyor 7 toward the piercing-conveying conveyor 8.
[0095] [0095] In the present exemplary embodiment, the sorting device 20 is configured to be drive-controlled to operate at a rotating speed that can guide the product veneer 12 toward the piercing-conveying conveyor 8 at substantially the same speed as the conveying speed of the veneer 10 conveyed by the discharging conveyor 7 by the time when the sorting device 20 reaches the lifting start position. Therefore, the downstream end portions of the product veneer 12 will not pass the guiding member 24 and the guiding member 24 will not collide with the upstream end portions of the veneer offeut 14. With this configuration, guiding the product veneer 12 toward the piercing-conveying conveyor 8 can be stabilized.
[0096] [0096] Then, when the sorting device 20 drive- controlled to this rotational speed reaches the piercing position as illustrated in FIG. 16, the drive of the sorting device 20 is stopped at the piercing position N 25 until the boundary M of the veneer 10 continuously N discharged by the discharging conveyor 7 reaches the a second predetermined position on the discharging 7 conveyor 7 (step S304). As described above, the sorting E device 20 is stopped at the piercing position, and at N 30 any one time the product veneer 12 continuously conveyed S by the discharging conveyor 7 pass through a clearance N narrower than the thickness dimension of the product veneer 12 located between the arc surface 33a' of the guiding member 24 and the tip of the needle-like body 8a’, that is, the position where the tip of the needle- like body 8a’ protrudes below the arc surface 33a' of the guiding member 24. Thus, the needle-like body 8a’ can reliably pierce into the product veneer 12 while the piercing thereof can be stabilized as well.
[0097] [0097] When the sorting device 20 is in the piercing position, the extent of the belts 7a, 7b and 7 (only the belt ”%7% is illustrated in FIG. 16) of the discharging conveyor 7 pushed up by the push-up member 26 (rolling bearing 26a) toward the piercing-conveying conveyor 8 is at the maximum, and thus allowing the product veneer 12 to be passed at a smooth angle from the mounting surfaces 7a’, Tb’, and Tc’ (only the mounting surface 7c’ is illustrated in FIG. 16) of the belts 7a, 7b, and 7c (only the belt 7c is illustrated in FIG. 16) to the arc surface 33a’ of the guiding member
[0098] [0098] Then, when the boundary M of the veneer 10 continuously discharged by the discharging conveyor 7 arrives at the second predetermined position on the N 25 discharging conveyor 7, driving of the sorting device 20 N is resumed toward the standby position (steps S306 and a 5308), and as illustrated in FIG. 17, when the sorting 7 device 20 reaches the lifting end position, the lifting a of the upstream end portion of the product veneer 12 by N 30 the corner end portion 35b of the guiding member 24 is S completed. N [0099] The predetermined gap G is set at the boundary M of the product veneer 12 conveyed by the discharging conveyor 7 as with the boundary K making it possible for the corner end portion 35b of the guiding member 24 to reliably 1ift only the upstream end portion of the product veneer 12.
[0100] [0100] Further, in the present exemplary embodiment, the sorting device 20 is drive-controlled to operate at the rotating speed that can guide the product veneer 12 toward the piercing-conveying conveyor 8, the speed being substantially the same speed as the conveying speed of the veneer 10 conveyed by the discharging conveyor 7, after the sorting device 20 reaches the lifting end position as described above. Therefore, the guiding member 24 (the corner end portion 35b) will not pass the upstream end portions of the product veneer 12, and the downstream ends portion of the veneer offcut 14 will not collide with the guiding member 24. With this configuration, guiding the product veneer 12 toward the piercing-conveying conveyor 8 can be stabilized.
[0101] [0101] After the corner end portion 35b of the guiding member 24 lifts the upstream end portion of the product veneer 12, the guiding member 24 and the push-up member 26 are further rotated together with the rotary shaft
[0102] [0102] In the present exemplary embodiment, the part of the guiding member 24 on which receives and guides the product veneer 12 to the piercing-conveying conveyor 8 and which also assists the piercing of the needle-like body 8a’ is located on the arc surface 33a’ centered on the rotary shaft 22. Therefore, the piercing state of the needle-like body 8a' with respect to the product veneer 12, that is, the depth of penetration can be maintained constant irrespective of the rotational position of the guiding member 24. Thereby, conveyance of the product veneer 12 by the piercing-conveying conveyor 8 can be made more stable.
[0103] [0103] In addition, when the guide member 24 is driven toward the standby position, the extent of the belts 7a, N 25 7b, and 7c (only the belt % is illustrated in FIGs. 17 N to 19) of the discharging conveyor 7 pushed up by the a push-up member 26 (rolling bearing 26a) toward the 7 piercing-conveying conveyor 8 is gradually reduced, and E the distance between the mounting surfaces 7a', 7b', and N 30 7c’ (only the belt 7c"' is illustrated in FIGs. 17 to 19) S of the belts 7a, 7b, and 7 (only the belt 7c is N illustrated in FIGs. 17 to 19) and the piercing- conveying conveyor 8 (needle-like body 8a’) gradually increases. Therefore, the veneer offcut 14 on the upstream side of the product veneer 12 across the boundary M can be satisfactorily decreased from being directed to the piercing-conveying conveyor 8, but can be reliably conveyed to the offcut conveyor 76 disposed at the downstream end of the discharging conveyor 7.
[0104] [0104] According to the sorting device 20 of the exemplary embodiment of the present invention described above, when the veneer 10 conveyed out by the discharging conveyor 7 1s the product veneer 12, the product veneer 12 is guided by the guiding member 24 and the push-up member 26 (rolling bearing 26a) toward the piercing-conveying conveyor 8 so as to be pierced by the needle-like body 8a’, whereas when the veneer 10 conveyed out by the discharging conveyor 7 is the veneer offcut 14, the veneer offcut is not directed toward the piercing-conveying conveyor 8 so as not to be pierced by the needle-like body 8a’. Due to the sorting device 20 configured as such, the progress of the abrasion of the needle-like body 8a' can be delayed as compared with the configuration in which the product veneer 12 and the veneer offcut 14 are both pierced by the needle-like body 8a’. As a result, the time to replace the needle- like body 8a’ can be extended, whereby the running cost N 25 can be reduced. N [0105] Further, according to the sorting device 20 of a the exemplary embodiment of the present invention, the 7 sorting device 20 is configured such that when the E guiding member 24 is in the piercing position, the N 30 product veneer 12 inevitably passes through the S clearance narrower than the thickness dimension of the N product veneer 12 formed between the arc surface 33a’ of the guiding member 24 and the tip of the needle-like body 8a’, that is, the position where the tip of the needle-like body 8a' protrudes below the arc surface 33a’ of the guiding member 24. Thus, the needle-like body 8a' can reliably pierce into the product veneer 12 while the piercing thereof can be stabilized as well. With this configuration, the occurrence of mechanical troubles caused by the unstable conveyance of the product veneer 12 by the piercing-conveying conveyor 8 can be satisfactorily decreased.
[0106] [0106] Furthermore, the sorting device 20 is configured such that when the guiding member 24 is at the standby position, the distance between the arc surface 33a’ of the guiding member 24 and the tip of the needle-like body 8a' is sufficiently larger than the thickness of the product veneer 12. Therefore, it is possible to effectively prevent the veneer offcut 14 from being pierced or hooked to the needle-like body 8a’ of the piercing-conveying conveyor 8, specifically even if the veneer offcut 14 is a distorted veneer offcut 14, and the occurrence of mechanical troubles can be satisfactorily decreased.
[0107] [0107] In the present exemplary embodiment, a configuration is adopted in which the end portion on one end side of the rim portion 33a of the guiding plate 32a N 25 of the guiding member 24 in the circumferential N direction is the projecting end portion 35a which a protrudes further than the web portion 33d in the 7 circumferential direction; however, the present E invention is not limited thereto. For example, a N 30 configuration may be adopted in which, as shown in a S sorting device 120 of a modified example illustrated in a FIG. 20, both end portions in the circumferential direction of a rim portion 133a of a guiding member 124 are projecting end portions 135a and 135b protruding in the circumferential direction from a web portion 133c, that is, a guiding plate 132a may be configured to be substantially T-shaped when viewed from the side in the axial direction of the rotary shaft 22. Note that a connection portion 135c connects the projecting end portions 135a and 135b.
[0109] [0109] In the present exemplary embodiment, the guiding plate 32a of the guiding member 24 is configured into a substantially fan shape including the rim portion 33a having the arc surface 33a'; however, the present invention is not limited thereto. For example, as shown in a sorting device 320 of a modified example illustrated in FIG. 22, a guiding plate 332a of a guiding member 324 may be configured into a substantially fan shape including a rim portion 333a N 25 having a polygonal surface 333a' formed of a plurality N of planes. Note that among the components of the sorting a device 320, components the same as or similar to those 7 of the sorting device 20 are denoted by the same E reference numerals as the sorting device 20, and the N 30 detailed description thereof is omitted. The sorting S device 320 is an example of an implementation N configuration corresponding to the "veneer sheet sorting device” in the present invention, and the guiding member
[0110] [0110] In the present exemplary embodiment, the product veneer 12 is placed on the arc surface 33a' of the rim portion 33a of the pair of guiding plates 32a and 32b and guided to the piercing-conveying conveyor 8. However, as shown in a sorting device 420 of a modified example illustrated in FIG. 23, a configuration may be adopted wherein a rolling member 433a composed of a plurality of rollers or balls is provided on the arc surface 33a’ of the rim portion 33a, and the product veneer 12 is placed on the rolling member 433a and guided to the piercing-conveying conveyor 8. Note that among the components of the sorting device 420, components the same as or similar to those of the sorting device 20 are denoted by the same reference numerals as the sorting device 20, and the detailed description thereof is omitted. The sorting device 420 is an example of an implementation configuration corresponding to the "veneer sheet sorting device” in N 25 the present invention. N [0111] When the product veneer 12 pierced by the a needle-like body 8a' is being conveyed by the piercing- 7 conveying conveyor 8, a force is applied to the product a veneer 12 from the piercing-conveying conveyor 8 in the N 30 conveyance direction (right direction in FIG. 23), while S on the other hand, a frictional force in the opposite N direction to the force acts between the product veneer 12 and the arc surface 33a' of the guiding member 24 causing a force that may tear the product veneer 12 to act on the product veneer 12. However, according to the sorting device 420 of the modified example described above, the force to tear the product veneer 12 can be minimized.
[0112] [0112] In the present exemplary embodiment, the sorting device 20 has a configuration in which the pair of guiding plates 32a and 32b of the guiding member 24 is separated from each other by a predetermined distance by the connecting boss portion 32c. However, as shown in a sorting device 520 of a modified example illustrated in FIG. 24, the sorting device 520 may be configured such that a guiding member 524 has only one guiding plate 532. In a case where the thickness of the veneer 10 is thin and liable to bending, by disposing the sorting device 520 relative to the piercing-conveying conveyor 8 so that a distance D from the axial center of the needle-like body 8a’ to a side surface 532a of the guiding plate 532 is smaller than a piercing depth E of the needle-like body 8a', the needle-like body 8a’ can be easily pierced into the product veneer 12. On the other hand, when the thickness of the veneer 10 is thick and tough to bend, the distance D may be set larger than the piercing depth E. Note that in the structure of the N 25 guiding plate 532, portions the same as or similar to N those of the guiding plate 32a are denoted by the same a reference numerals as the guiding plate 32a, and the 7 detailed description thereof is omitted. The sorting a device 520 is an example of an implementation N 30 configuration corresponding to the "veneer sheet sorting S device” in the present invention, and the guiding member N 524 is an example of an implementation configuration corresponding to the "action section" and the "rotary member" in the present invention.
[0113] [0113] In the present exemplary embodiment, the sorting device 20 has a configuration in which the guiding member 24 is composed of the pair of separate guiding plates 32a and 32b and the connecting boss portion 32c. However, as shown in a sorting device 620 of a modified example illustrated in FIG. 25, the sorting device 620 may have a configuration in which a guiding member 624 has a pair of guiding plate portion 632a and 632b and a connecting boss portion 632c, which connects the pair of guiding plate portion 632a and 632b and disposed so as to be held therebetween, integrally formed. Note that among the components of the sorting device 620, components the same as or similar to those of the sorting device 20 are denoted by the same reference numerals as the sorting device 20, and the detailed description thereof is omitted. The sorting device 620 is an example of an implementation configuration corresponding to the "veneer sheet sorting device” in the present invention, and the guiding member 624 is an example of an implementation configuration corresponding to the "action section" and the "rotary member" in the present invention.
[0114] [0114] In the present exemplary embodiment, the N 25 sorting device 20 is configured to include the rotary N shaft 22, and the guiding member 24 and the push-up a member 26 integrated with the rotary shaft 22; however, 7 the present invention is not limited thereto. For a example, as shown in a sorting device 720 of a modified N 30 example illustrated in FIGs. 26 to 29, the sorting S device 720 may have a configuration that includes the N rotary shaft 22, a second rotary shaft 722, the guiding member 24 integrated with the rotary shaft 22, and the push-up member 26 integrated with the second rotary shaft 722. That is, in the sorting device 720 of the modified example, the rotation centers of the guiding member 24 and the push-up member 26 are different. The sorting device 720 is an example of an implementation configuration corresponding to the "veneer sheet sorting device” in the present invention.
[0115] [0115] The sorting device 720 may be configured to include a motor (not shown) for rotationally driving the second rotary shaft 722 in addition to the motor 23 for rotationally driving the rotary shaft 22, or may configured to have the motor 23 rotationally drive both the rotary shaft 22 and the second rotary shaft 722. In the case of adopting the configuration in which the second rotary shaft 722 is rotated by another motor (not shown) from the motor 23, the rotary shaft 22 and the second rotary shaft 722 can be individually rotated. Note that among the components of the sorting device 720, components the same as or similar to those of the sorting device 20 are denoted by the same reference numerals as the sorting device 20, and the detailed description thereof is omitted.
[0116] [0116] Also, in this configuration, the lifting of the downstream end portion (boundary K) of the product N 25 veneer 12 by the projecting end 35a of the guiding N member 24 in combination with the pushing up of the belt a 7a, 7b, and 7c of the discharging conveyor 7 toward the 7 piercing-conveying conveyor 8 by the push-up member 26 E (rolling bearing 26a) are reliably performed, whereby N 30 the piercing of the needle-like body 8a' into the S product veneer 12 can be stabilized without fail at the N piercing position, and the upstream end portion (boundary M) of the product veneer 12 can be reliably lifted by the corner end 35b of the guiding member 24. This configuration allows the needle-like body 8a' to pierce only the product veneer 12 and be transported by the piercing-conveying conveyor 8 thereby delaying the progress of the abrasion of the needle-like body 8a’. As a result, the replacement time of the needle-like body 8a' can be extended and the running cost can be reduced.
[0117] [0117] In the present exemplary embodiment, the deflection suppression pulley 8b is configured as a roller member; however, the present invention is not limited thereto. For example, as shown in a piercing- conveying conveyor 108 of a modified example illustrated in FIG. 30, a plate-like deflection suppressing plate 108b fixed to suppress the deflection of the belt 8a may be used. Also, as illustrated in FIG. 31, if the needle- like body 8a’ can be pierced into the veneer 10 (product veneer 12) by only the tension of the belt body 8a for cases where the thickness of the veneer 10 (product veneer 12) is thin or the hardness of the veneer plate 10 (product veneer plate 12) is low, there is no need to provide a member for suppressing the bending of the belt body 8a.
[0118] [0118] In the present exemplary embodiment, the sorting device 20 is configured including the rotary N 25 shaft 22 and the guiding member 24 and the push-up N member 26 integrated with the rotary shaft 22, wherein a the rotation of the rotary shaft 22 causes the guiding 7 member 24 and the push-up member 26 to rotate thereby E guiding the product veneer 12 toward the piercing- N 30 conveying conveyor 8; however, the present invention is S not limited thereto. For example, as shown in a sorting N device 820 of a modified example illustrated in FIGs. 32 to 35, a configuration may be adopted in which the product veneer 12 is guided toward the piercing- conveying conveyor 8 by linearly moving a guiding member 824 obliquely upward at an acute angle with respect to the belt 8a of the piercing-conveying conveyor 8. In addition, as shown in a sorting device 920 of a modified example illustrated in FIGs. 36 to 39, a configuration may be adopted in which a guiding member 924 is linearly moved upward (upward direction in FIGs. 36 to 39) toward the piercing-conveying conveyor 8 to guide the product veneer 12 toward the piercing-conveying conveyor 8. The sorting devices 820 and 920 are examples of an implementation configuration corresponding to the “veneer sheet sorting device” in the present invention, respectively, and each guiding member 824 and 924 is an example of an implementation configuration corresponding to the "action section” in the present invention.
[0119] [0119] As illustrated in FIGs. 32 to 35, the guiding member 824 is configured as an elongated member having a guiding flat surface 833a’, and the guiding member 924 is configured as a plate-like member having an arc surface 933a' as illustrated in FIGs. 36 to 39. Also, in this configuration, as illustrated in FIG. 32 and FIG. 36, the downstream end (boundary K) of the product veneer 12 is reliably lifted by front corner end N 25 portions 835a and 935a of the guiding members 824 and N 924, respectively, at the lifting start position. a Therefore, as illustrated in FIG. 33, FIG. 34, FIG. 37 7 and FIG. 38, the piercing of the needle-like body 8a’ E into the product veneer 12 at the piercing position can N 30 be stabilized. It is preferable that the sorting devices S 820 and 920 of the modified examples temporarily stops N at the piercing position illustrated in FIG. 34 and FIG. as with the sorting device 20 of the present exemplary embodiment. As a result, the product veneer 12 continuously conveyed by the discharging conveyor 7 can be stably guided toward the piercing-conveying conveyor 8 as well as achieving a stabilized piercing of the needle-like body 8a’ into the product veneer 12. The respective guiding flat surface 833a’ and arc surface 933a’ are examples of an implementation configuration corresponding to the "inclined surface" in the present invention. The front corner end portions 835a and 93ba are examples of an implementation configuration corresponding to the "first lifting part" and "assisting part", respectively, in the present invention.
[0120] [0120] According to the sorting devices 820 and 920 of the modified example described above, because only the product veneer 12 is guided toward the needle-like body 8a' by the guiding flat surface 833a’ or the arc surface 933a’ allowing only the product veneer 12 to be pierced by the needle-like body 8a’ and conveyed by the piercing-conveying conveyor 8, the progress of the abrasion of the needle 8a' can be delayed. As a result, the time to replace the needle-like body 8a’ can be extended, whereby the running cost can be reduced. Note that it is preferable to return the guiding members 824 and 924 to the standby position before the lifting of N 25 the upstream end portion (boundary M) of the product N veneer 12 is completed in order to prevent the veneer a offcut 14 upstream of the product veneer 12 from 7 colliding with rear corner end portions 835b and 935b as a illustrated in FIG. 35 and FIG. 39. N 30 [0121] In the present exemplary embodiment and the S above-described modification, the piercing-conveying N conveyors 8 and 108 are configured such that the belt body 8a extends in the direction of conveying the product veneer 12; however, the present invention and the above-described modification are not limited thereto. For example, as shown in a piercing-conveying conveyor 208 of a modified example illustrated in FIG. 40, a configuration thereof may include a circular pulley body 209 having a plurality of the needle-like bodies 8a’. In this case, the needle-like body 8a’ may be directly provided on the circular pulley body 209, or a belt-like member having the plurality of needle-like body 8a’ may be attached to the circular pulley body
[0122] [0122] In the present exemplary embodiment and the above-described modification, the boundaries K and M are each provided at only one place on the veneer 10, but as shown in a veneer 100 of a modified example illustrated in FIG. 14, a plurality of each of the boundaries K and M may be provided.
[0123] [0123] In the present exemplary embodiment and the above-mentioned modified example, the configuration thereof is that the projecting end portions 35a and 135a and the front corner end portions 835a and 935a starts lifting the downstream end portion of the product veneer 12; however, the present invention and the above- mentioned modified example are not limited thereto. For N 25 example, a configuration may be adopted for a case where N the rotation speed of the sorting devices 20, 120, 220, a 320, 420, 520, 620, 620 , 720, 820, 920 when the sorting 7 devices 20, 120, 220, 320, 420, 520, 620, 620 , 720, E 820, 920 have reached the lifting start position is N 30 faster than the rotation speed of the veneer 10 conveyed S by the discharging conveyor 7, the arc surfaces 33a’, N 133a’, 933a’, polygonal surface 333a’, and guiding flat surface 833a’ (the connecting portions 35c, 135c, etc.)
[0124] [0124] In the present exemplary embodiment and the above-described modified example, the configuration thereof is that the lifting of the upstream end portion of the product veneer 12 is completed by the corner end portion 35b and the projecting end portion 135b; however, the present invention and the above-mentioned modified example are not limited thereto. For example, a configuration may be adopted for a case that when the rotation speed of the sorting devices 20, 120, 220, 320, 420, 520, 620, 620 , 720, 820, and 920 is slower than the rotation speed of the veneer 10 conveyed by the N 25 discharging conveyor 7 until the sorting devices 20, N 120, 220, 320, 420, 520, 620, 620 , 720, 820, and 920 a have reached the lifting end position, the arc surfaces 7 33a’ and 133a’' and the polygonal surface 333a’ (the E connecting portions 235c, 1350, etc.), excluding the N 30 projecting end portions 35a, 135a, 135b and the corner S end portion 35b, complete the lifting of the upstream N end portion of the product veneer 12. In this case, apart from the projecting end portions 35a, 135a, and
[0125] [0125] In the present exemplary embodiment and the above-described modified example, the configuration thereof is such that the product veneer 12 is guided toward the piercing-conveying conveyor 8 by the guiding members 24, 124, 224, 324, 524, 624, 824, and 924; however, the present exemplary embodiment and the above- described modified example are not limited thereto. For example, instead of the configuration including the guiding members 24, 124, 224, 324, 524, 624, 824, and 924, a configuration having a suction unit capable of suctioning the product veneer 12 may be adopted wherein only the product veneer 12 is suck by the suction unit to thereby guide the product veneer 12 towards the piercing-conveying conveyor 8.
[0126] [0126] Although the present exemplary embodiment is configured to determine whether the veneer shape detection sensors 62a to 62c are turned ON in step S100 of the boundary setting process routine, the present invention is not limited thereto. For example, the N 25 present exemplary embodiment may be configured to N determine in step S100 of the boundary setting process a routine whether the veneer shape detection sensors 62d 7 to 62f or the veneer shape detection sensors 62b to 62d E or the veneer shape detection sensors 62c to 62e are N 30 turned on. Note that the process of step S100 of the S boundary setting process routine is however not limited N to determining whether three consecutive veneer shape detection sensors of the veneer shape detection sensors
[0127] [0127] Although the present exemplary embodiment is configured to determine in step S102 of the boundary setting process routine whether the ON state of the veneer shape detection sensors 62a to 62c have continued for the length of the first predetermined time, the present invention is not limited thereto. For example, the present invention may be configured to determine whether the veneer 10 has moved a first predetermined distance while the veneer shape detection sensors 62a to 62c turned ON. Note that the first predetermined distance can be calculated based on the pulse signal output from the pulse generator 6a and is set to a movement distance corresponding to a length dimension in which the short end veneer 12b can be procured.
[0128] [0128] In the present exemplary embodiment, the boundary M is set when it is determined in step S122 of N 25 the boundary setting process routine that the veneer N shape detection sensor 62a is turned OFF; however, the a present invention is not limited thereto. A 7 configuration may be adopted in which the boundary M is E set when it is determined that any one or two or more of N 30 the veneer shape detection sensors 62a to 62f are turned S OFF. N [0129] The present exemplary embodiment shows an example of a mode for carrying out the present invention. Therefore, the present invention is not limited to the configuration of the present embodiment. In addition, the correspondence relation between each component of this exemplary embodiment and those of the present invention is shown in the following.
REFERENCE SIGNS LIST 1 Veneer sheet conveying apparatus (Veneer sheet conveying apparatus) 2 Rotary lathe (Veneer cutting machine) 2a Spindle 2b Cutter 4 Cutting device (Cutter) da Rotary blade 4b Rotary table dc Anvil roll 6 Loading conveyor (Loading unit) 6a Pulse generator 7 Discharging conveyor (Discharging unit) Ta Belt Tb Belt Tc Belt 7d Pulse generator Te Support shaft Ta’ Mounting surface (Mounting surface) N 25 To! Mounting surface (Mounting surface) N Tc! Mounting surface (Mounting surface) a 8 Piercing-conveying conveyor (Piercing-conveying 7 section) E 8a’ Needle-like body (Needle-like body) N 30 8b Deflection suppression pulley S 8c Swinging needle removal claw N 8d Fixed needle removal claw 10 Veneer (Veneer)
12 Product veneer (Product veneer) 12a Standard-length veneer 12b Short end veneer 14 Veneer offcut 18 Falling off prevention portion 20 Sorting device (Veneer sheet sorting device) 22 Rotary shaft 23 Motor 24 Guiding member (Action section, Rotary member) 26 Push-up member (Push-up section) 26a Rolling bearing (Second rotary member) 26b Boss member 26b' Axial hole 26ac Axial center 26bc Axial center 32a Guiding plate 32b Guiding plate 32c Connecting boss portion 33a Rim portion 33a’ Arc surface (Inclined surface, Arc surface) 33b Hub portion 33c Web portion 33d Web portion 35a Projecting end portion (First lifting part) N 25 35b Corner end portion (Second lifting part) N 35c Connecting portion (Assisting part) a 62 Veneer shape detection sensor 7 62a Veneer shape detection sensor E 62b Veneer shape detection sensor N 30 62c Veneer shape detection sensor S 62d Veneer shape detection sensor N 62e Veneer shape detection sensor 62f Veneer shape detection sensor
64 Cutting detection sensor (Signal transmission unit) 72 Transport conveyor 72a Deposition box 74 Transport conveyor 74a Deposition box 76 Offcut conveyor 80 Control device (Control device) 100 Veneer (Veneer) 108 Piercing-conveying conveyor 108b Deflection suppressing plate 120 Sorting device 124 Guiding member (Action section, Rotary member) 132a Guiding plate 133a Rim portion 133c Web portion 135a Projecting end portion (First lifting part) 135b Projecting end portion (Second lifting part) 135c Connecting portion (Assisting part) 208 Piercing-conveying conveyor 209 Pulley body 220 Sorting device (Veneer sheet sorting device) 224 Guiding member (Action section, Rotary member) 232a Guiding plate 320 Sorting device (Veneer sheet sorting device) N 25 324 Guiding member (Action section, Rotary member) N 332a Guiding plate a 333a Rim portion 7 333a’ Polygonal surface (Inclined surface) a 420 Sorting device (Veneer sheet sorting device) N 30 433a Rolling member S 520 Sorting device (Veneer sheet sorting device) a 524 Guiding member (Action section, Rotary member) 532 Guiding plate
532a Side surface 620 Sorting device (Veneer sheet sorting device) 624 Guiding member (Action section, Rotary member) 632a Guiding plate portion 632b Guiding plate portion 632c Connecting boss portion 720 Sorting device (Veneer sheet sorting device) 722 Second rotary shaft 820 Sorting device (Veneer sheet sorting device) 824 Guiding member (Action section) 833a! Guiding flat surface (Inclined surface) 835a Front corner end portion (First lifting part, Assisting part) 835b Rear corner end portion 920 Sorting device (Veneer sheet sorting device) 924 Guiding member (Action section) 933a’ Arc surface (Inclined surface) 935a Front corner end portion (First lifting part, Assisting part) 935b Rear corner end portion L Raw wood K Boundary M Boundary O Boundary N 25 VL Straight line N Fk Boundary K setting flag a Fo Boundary O setting flag 7 D Distance E G Predetermined gap N 30
N gN

权利要求:
Claims (18)
[1] 1. A veneer sheet sorting device installed in a veneer sheet conveying apparatus that includes a discharging unit and a piercing-conveying unit, the discharging unit having a mounting surface for placing a veneer discharged from a veneer cutting machine and cut into a product veneer and a veneer offcut by a cutter and configured to continuously convey out the product veneer and the veneer offcut toward a downstream side, and the piercing-conveying unit having a plurality of needle- like bodies and configured to be disposed above the discharging unit so that the needle-like bodies are opposed to the mounting surface of the discharging unit so as to be capable of conveying the veneer toward a subsequent process, the veneer sheet sorting device configured to sort the veneer conveyed out by the discharging unit into the product veneer and the veneer offcut by guiding the product veneer toward the piercing-conveying unit so that the needle-like bodies are pierced into the product veneer when the veneer is the product veneer and guiding the veneer offcut to the downstream side so as not to be pierced by the needle-like bodies when the veneer is the veneer offcut. N 25 & A 2. The veneer sheet sorting device according to claim 1, o comprising I an action section for acting directly on the a product veneer, wherein veneer sheet sorting device is N 30 configured to guide the product veneer toward the S piercing-conveying unit using the action section. o
[2] N
[3] 3. The veneer sheet sorting device according to claim 2,
wherein the action section is configured to be switchable between a guiding state where a distance between at least a portion of the action section and the needle- like bodies is smaller than a thickness of the veneer and a non-guiding state where the distance is greater than the thickness of the veneer, and the action section is configured to enter the guiding state when the veneer is the product veneer and enter the non-guiding state when the veneer is the veneer offcut.
[4] 4. The veneer sheet sorting device according to claim 3, comprising a rotary shaft and a rotary member as the action section integrally mounted to the rotary shaft, wherein the veneer sheet sorting device is configured to be switchable between the guiding state and the non-guiding state by rotation of the rotary shaft.
[5] 5. The veneer sheet sorting device according to claim 3 or 4, wherein the action section includes a first lifting part configured to be capable of lifting a N 25 downstream end portion of the product veneer, and an N assisting part for assisting the piercing of the needle- a like bodies into the product veneer. z: E
[6] 6. The veneer sheet sorting device according to claim 5 N 30 that is a dependent on claim 4, wherein S the rotary member further includes a second lifting N part for lifting an upstream end portion of the product veneer.
[7] 7. The veneer sheet sorting device according to any one of claims 3 to 6, wherein the action section has an inclined surface that is inclined upward toward the downstream side when entering the guiding state and the action section is configured such that the inclined surface guides the product veneer towards the piercing-conveying unit.
[8] 8. The veneer sheet sorting device according to claim 7 that is a dependent on claim 6, wherein the inclined surface is configured as a circular arc surface so that a distance from the axis line of the rotary shaft is constant, and the first lifting part, the assisting part, and the second lifting part are connected by the circular arc surface.
[9] 9. The veneer sheet sorting device according to any one of claims 1 to 8, further comprising a push-up section capable of pushing up at least a part of the mounting surface in a direction approaching the needle-like bodies, and N 25 the veneer sheet sorting device is configured such N that the push-up section pushes up at least a part of a the mounting surface to guide the product veneer toward 7 the piercing-conveying unit. a a N 30
[10] 10. The veneer sheet sorting device according to claim 9 S that is a dependent on claim 4, wherein N the push-up section has a second rotary member integrally and eccentrically provided with the rotary shaft, wherein the second rotary member is configured to abut from under the mounting surface with the rotation of the rotary shaft to push up the mounting surface.
[11] 11. A veneer sheet conveying apparatus for conveying a veneer discharged from a veneer cutting machine and cut into a product veneer and a veneer offcut by a cutter, the veneer sheet conveying apparatus comprising: a discharging unit that has a mounting surface for placing the veneer cut by the cutter and that is configured to continuously convey out the product veneer and the veneer offcut toward a downstream side; a piercing-conveying unit that has a plurality of needle-like bodies and that is configured to be disposed above the discharging unit so that the needle-like bodies are opposed to the mounting surface so as to be capable of transporting the veneer toward a subsequent process; the veneer sheet sorting device according to any one of claims 1 to 10; and a control device for controlling the veneer sheet conveying apparatus.
[12] 12. The veneer sheet conveying apparatus according to N 25 claim 11 that is a dependent on claim 5, wherein N the control device drive-controls the veneer sheet a sorting device so that the first lifting part of the 7 action section lifts the downstream end portion of the E product veneer, N 30 the control device drive-controls the veneer sheet S sorting device so that the action section enters the N assisting state in which the assisting part assists the piercing of the needle-like bodies into the product veneer, and the control device drive-controls the veneer sheet sorting device so that the operation of the action section is temporarily stopped when the action section enters the assisting state.
[13] 13. The veneer sheet conveying apparatus according to claim 12, wherein the control device drive-controls the veneer sheet sorting device so that, at least when the downstream end portion of the product veneer is being lifted by the first lifting part, the conveying speed of the action section to convey the product veneer toward the piercing-conveying unit is substantially the same as the conveying-out speed of the veneer conveyed by the discharging unit.
[14] 14. The veneer sheet conveying apparatus according to claim 11 that is a dependent on claim 6, wherein the control device drive-controls the veneer sheet sorting device so that, at least when the upstream end portion of the product veneer is being lifted by the second lifting part, the conveying speed of the rotary member to convey the product veneer toward the piercing- N 25 conveying unit is substantially the same as the N conveying-out speed of the veneer conveyed by the a discharging unit. o
I E
[15] 15. The veneer sheet conveying apparatus according to N 30 any one of claims 11 to 14, further comprising S a signal transmission member for transmitting a N signal when the veneer is cut into the product veneer and the veneer offcut by the cutter,
wherein the control device drive-controls the veneer sheet sorting device based on the transmitted signal.
[16] 16. The veneer sheet conveying apparatus according to any one of claims 11 to 15, wherein the veneer cut by the cutter is conveyed out toward the veneer sheet sorting device in a state where a predetermined interval is secured between the cut veneers.
[17] 17. The veneer sheet conveying apparatus according to claim 16, further comprising a loading unit configured to convey to the cutter the veneer discharged from the veneer cutting machine, wherein the veneer sheet conveying apparatus configured to make a conveying-in speed of the veneer conveyed by the loading unit different from a conveying- out speed of the veneer conveyed by the discharging unit so as to secure the predetermined interval.
[18] 18. A veneer sheet sorting method of a veneer sheet conveying apparatus including a discharging unit having a mounting surface for placing a veneer discharged from a veneer cutting machine and cut into a product veneer N 25 and a veneer offcut by a cutter and configured to N continuously convey out the product veneer and the a veneer offcut toward a downstream side, and a piercing- 7 conveying unit having a plurality of needle-like bodies a and configured to be disposed above the discharging unit N 30 so that the needle-like bodies are opposed to the S mounting surface of the discharging unit so as to be N capable of conveying the veneer toward a subsequent process, the veneer sheet sorting method for sorting the veneer conveyed out by the discharging unit into the product veneer and the veneer offcut, comprising: (a) guiding the product veneer toward the piercing- conveying unit so that the needle-like bodies are pierced into the product veneer when the veneer is the product veneer, and (b) guiding the veneer offcut to the downstream side so as not to be pierced by the needle-like bodies when the veneer is the veneer offcut.
o
N o
N
N o o
I a a
N
N
N © o
N o
N

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JPH0113401B2|1981-02-09|1989-03-06|Uroko Seisakusho Co Ltd|

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JP4445684B2|2001-03-30|2010-04-07|株式会社名南製作所|Single plate processing method and single plate processing apparatus|

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JP4342363B2|2004-03-29|2009-10-14|株式会社名南製作所|Plate body sorting device|

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JP2012011708A|2010-07-02|2012-01-19|Hashimoto Denki Co Ltd|Anvil roll and cutting device of single plate|

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优先权:

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申请号 | 申请日 | 专利标题

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PCT/JP2018/030163|WO2020035890A1|2018-08-11|2018-08-11|Veneer sorting device, veneer conveyance device comprising same, and veneer sorting method|

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