• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The weaving loom includes a multi-color weft inserter having multiple weft inserting nozzles for the selective insertion of multiple weft threads into a host of warp threads to weave a fabric. The weft insertion nozzles are fixed on a leaf. The weft insertion nozzles are juxtaposed in the front-rear direction of the loom. the loom includes a pick line shift device for moving the pick line. When the weft insertion nozzle closest to the pick-up line, among said several weft insertion nozzles, inserts the weft thread, the pick-up line displacement device moves the pick-up line tightening pick in the direction in which the warp threads move.
    公开号:BE1019326A3
    申请号:E201000275
    申请日:2010-05-05
    公开日:2012-06-05
    发明作者:
    申请人:Toyota Jidoshokki Kk；
    IPC主号:
    专利说明:

    Weaving machine having a multicolor weft insertion device.
    The present invention relates to a loom having a multi-color weft insertion device containing a plurality of weft insertion nozzles for selectively inserting a plurality of weft threads.
    In a loom having a weft inserting nozzle for inserting a weft yarn into a weft weaving shed, it is known to mount a flapper comb designated by the term "profiled comb" having a passage for the weft weave. guiding the weft, on an oscillating flap and inserting a weft yarn in the passage for guiding the weft via a jet of fluid injected by the weft insertion nozzle. In general, the weft insertion nozzle is fixed to the leaf so that the weft yarn is easily inserted into the weft guiding passage. In a multicolor weft insertion device containing two or more weft insertion nozzles, it is difficult to mount a plurality of weft insertion nozzles on a single leaf.
    In a multicolored loom containing, for example, six weft insertion nozzles which are fixed to the leaf, the nozzles can not be arranged in a vertical line because of the restricted size of the passage for guiding the weft. For this reason, the weft insertion nozzles are designed with great precision to ensure that their pointed ends are directed towards the passage for the guidance of the weft by placing each nozzle in a complicated inclined position and / or by bending the nozzle in various directions. However, when the fifth or sixth nozzle of the six weft insertion nozzles is actuated to insert a weft yarn, the weft yarn has a tendency to deviate from the weft guide passage, giving rise to failure of the weft insertion, i.e., the weft yarn contacts the weft yarns located outside the weft guiding passage. As a result, it is difficult to secure the weft insertion nozzles onto the leaf in a multicolour weft insertion device having as many as eight insertion nozzles.
    Japanese Patent Application Publication No. 2001-32148 discloses a loom having a multi-color weft insertion device which allows a weft to be inserted by moving eight weft insertion nozzles onto a leaf. in the vertical direction of the loom. Specifically, two nozzles are arranged spaced apart in the front-to-back direction of the loom and four sets of such nozzles are placed vertically, so that a total of eight nozzles are obtained. The eight nozzles are held together by a nozzle holder. The nozzle holder is mounted on an oscillating plate that oscillates vertically on the leaf. The oscillating plate is oscillated via a power transmission device such as a motor-driven rod mounted on the frame of the loom, so that the eight nozzles are oscillated in the vertical direction. Such oscillation movement allows a selected nozzle to be moved for the insertion of the weft to make it take a weft insertion position in which the selected nozzle faces the passage for guiding the weft.
    Recent looms are designed to work at high speeds above 700-1000 rpm. The six to eight weft-mounted weft insertion nozzles have a large mass and are disposed away from the swing axis of the wing, so that the nozzles are subjected to an intense force which is due to acceleration. In the loom described above, in which the high-force nozzles oscillate in the vertical direction, the support of the oscillation plate for the vertical movement of the nozzles and the connecting rod of the energy transmission device tend to ratcheting at an early stage, which does not facilitate obtaining a stable movement and a correct positioning of the nozzles in the weft insertion position. In addition, the thief has a tendency to accumulate on the support of the oscillation plate and the connecting rod of the energy transmission device, said accumulation being able to affect the oscillation movement of the nozzles. Thus, the structure, in which a plurality of nozzles are moved as indicated in the loom of the aforementioned publication, faces problems with the reliability of the weft inserting operation and the durability of the weft insertion device.
    The present invention relates to a loom having a multicolor weft insertion device which provides a reliable operation of the insertion of the weft and a durability of the weft insertion device.
    SUMMARY OF THE INVENTION
    In accordance with one aspect of the present invention, the loom includes a multi-color weft insertion device having a plurality of weft insertion nozzles for the selective insertion of a plurality of weft yarns into a host of weaves of the weft threads. weave a cloth. The weft insertion nozzles are fixed on a leaf. The weft insertion nozzles are juxtaposed in the front-to-back direction of the loom. At least when the weft insertion nozzle closest to the one draw line among said one or more weft insertion nozzles inserts the weft yarn, the displacement clamping device of the picking line moves the line of tightening of pick in a direction in which the warp threads are set in motion.
    The term "multicolor" according to the present invention is used in two different cases. In one case, we use several weft son each having a different color. In the other case, several weft yarns of different colors and several weft yarns of the same color are used. The term "tamping" refers to a compression action of the weft yarn inserted against the picking line for interlacing the weft yarn with the warp yarn and the term "beating position" refers to the position of the weft line. clamping in which the weft yarn is packed by the flapper comb for interlacing the weft yarn with the warp yarn.
    Other aspects and advantages of the invention will become apparent from the following description when taken in conjunction with the accompanying drawings illustrating by way of example the principles of the invention.
    BRIEF DESCRIPTION OF THE DRAWINGS
    The invention, together with its objects and advantages, will be best understood by reference to the following description of its presently preferred embodiments in conjunction with the accompanying drawings in which: FIG. schematic plan in which there is shown a multicolor frame insertion device; Fig. 2 is a schematic front view showing the multicolor weft insertion device of Fig. 1; Fig. 3 is a schematic side view showing a sponge weaving loom having a mechanism for carrying out the movement of the toweling; Fig. 4 is a schematic view illustrating the movement of the draw line in the sponge weave of Fig. 3; Fig. 5 is a graph showing the direction of movement of the pick-up line of Fig. 4 in the case of the first embodiment of the present invention; and Fig. 6 is a graph showing the shape of the movement of the pick-up line of Fig. 4 in the case of a second embodiment of the present invention.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
    Hereinafter, the loom having the multicolor weft insertion device according to the first embodiment of the present invention will be described with reference to FIGS. 5. In the present first embodiment, it is used to office loom, a loom sponge fabrics. Referring to Fig. 1, the underside of the drawing corresponds to the front of the loom in which the woven fabric is rolled up and the upper side corresponds to the back of the loom in which the warp is unwound. In addition, the left side of the drawing corresponds to the left side of the loom and the right side corresponds to the right side of the loom.
    The wing 1 shown in FIG. 1 is attached to an oscillating shaft (which is not shown) which is driven by a drive motor MR, which is shown in FIG. 3, for a forward oscillation. back and vice versa. As shown in FIG. 1, a multicolour weft insertion device 2 is attached to the wing 1 at the left end thereof. The weft insertion device 2 is designed to handle an eight-color weft insertion and has eight weft insertion nozzles 2A through 2H. Eight weft insertion nozzles 2A to 2H extend essentially over the width of the loom, as shown in FIGS. 1 and 2. Four weft inserting nozzles 2A, 2C, 2E and 2G are juxtaposed into each other. the front-to-back direction of the loom which is perpendicular to the width direction. The other four frame insertion nozzles 2B, 2D /> 2F and 2H are similarly juxtaposed directly below the weft insertion nozzles 2A, 2C, 2E and 2G, respectively as shown in FIG.
    The weft insertion nozzles 2A to 2H are held at their proximal ends by a holding device 3 fixed to the support 4 which is in turn fixed to the wing 1. A number of parts 5 of the profiled comb are mounted on the wing 1 to extend upwardly on the right side of the weft insertion device 2. The parts 5 of the profiled comb comprise teeth which cooperate to form a passage 6 for guiding the weft. The outputs of the weft insertion nozzles 2A to 2H are all oriented towards the passage 6 for guiding the weft. Reference numeral 7 designates an auxiliary nozzle, by the reference numeral 8, a cutting device for cutting a weft thread and by the reference numeral 9, a templet which is able to slide from front to back. back and vice versa on the loom. The reference symbols T, TP, W, W1 and Y denote, respectively, a basic warp yarn, a pile warp yarn, a woven cloth, a pick string, and a weft yarn.
    Referring to Fig. 3, in which the sponge weaving loom is schematically represented in its side view, it can be seen that the loom has a lower warp beam which is rotated through a wiper motor. unwinding of the lower chain MG which is electrically connected to the flow control device of the lower chain CG. The lower warp threads T, which are unwound from the lower warp beam 10, move past an arcuate rear pad 11 and a tensioning roller 12, before passing through the rails 13 and the comb pieces 5. profile. The woven fabric W is wrapped around the winder 19 via a drawing bar 15, a facing roller 16 and guide rollers 17 and 18.
    An upward extension lever 21 which is mounted on the frame 28 of the loom and supports, at its upper end, the tensioning roller 12 pivoting. The tensioning roller 12 is pressed via any suitable compression mechanism (not shown) so as to absorb, via a negative discharge movement, the change in tension of the lower chain wires T due to the operation. crowd training. A downward extension lever 22 is mounted on the frame 20 and a rod 23 is pivotally connected to the lower end of the downward extension lever 22. A compression force indicator 24 is mounted on the rod 23 for detecting the tension of the threads of the lower chain T acting on the tensioning roller 12, and is electrically connected to the control device of the course of the lower chain CG. The lower chain unwind control device CG can be actuated to control the speed of the lower chain unwind motor MG based on a preset reference voltage value and the warp tension information detected by the compression force indicator 24.
    A pile warp beam 25 is disposed above the looper of the lower chain 10. The warp of the pile chain 25 is rotated via a winding motor of the pile chain MP electrically connected to the device. for controlling the unwinding of the pile chain CP. The threads of the pile chain TP which are unwound from the beam of the pile chain 25 and which pass by passing in front of a driving roller 26, a tensioning member 27 and a roller for the movement of the toweling 28 , pass through the smooth 13 and the parts 5 of the profiled comb.
    The driving roller 26 is rotatably supported by the frame 20. The driving roller 26 has, at its opposite ends which do not come into contact with the threads of the pile chain TP, a pair of elements ( not shown) that must be detected. A pair of proximity sensors 31 (only one of which is shown) is disposed in a face-to-face reaction with the paired elements to be detected, indicated above. The paired proximity switches 31 may be actuated to detect the rotation of the drive roller 26 and also to generate rotational detection signals to the unwind control device of the pile chain CP. The tensioning member 27 is supported by a leaf spring 32 which is in turn supported by a shaft 30 which is mounted on the frame 20. In such an arrangement, the change of tension of the threads of the pile chain TP passing in front of it. the tensioning member 27, said change being due to the shedding operation, is absorbed by the deformation of the leaf spring 32. A lever 14 having a compression force indicator 29 is attached to the end of the The compression force indicator 29 can be actuated to detect the tension of the pile string threads TP also to generate the detection signals towards the control device of the unwinding of the pile chain CP.
    The control device of the unwinding of the pile chain CP can be actuated to control the speed of the unwinding motor of the pile chain MP based on the comparison between the information concerning the tension of the warp thread detected by the compression force indicator 29 at a preset reference voltage value and the rotational detection signals that are detected by the paired proximity sensors 31. The roll for the movement of the toweling fabric 28 is rotatably supported by the end distal of the upper arm of an oscillating lever 34 which is pivotally supported by a shaft 33. The lower arm of the oscillating lever 34 is pivotally connected to the rod 23.
    A two-armed intermediate lever 35 is mounted on a rotating shaft at an intermediate position when looking in the front-to-back direction of the loom, and a mechanism for carrying out the movement of the toweling fabric 37 which serves as a device. of the present invention is disposed above the two-armed intermediate lever 35. The mechanism for carrying out the movement of the sponge cloth 37 comprises a drive unit (not shown) including a ball-type mechanism, a roller-type gear or a planetary gear, or a cam mechanism. The drive unit is driven by its own sponge weave motor MT which is electrically connected to the wiper device CT. When the mechanism for carrying out the movement of the toweling fabric 37 is actuated, a drive lever 39 mounted on a drive shaft 38 which is connected to the drive unit is reciprocated by pivoting in alternate directions.
    The driving lever 39 transmits the pivoting movement back and forth to the two-armed intermediate lever 35 via a rod 41 connected to an arm 40 of the intermediate lever 35. The intermediate lever 35 transmits the oscillation movement (or the movement of the terry cloth) with the tensioning roller 12 and with the roll for carrying out the movement of the terry cloth 28 via the rod 23 connected to the other arm 42 of the intermediate lever 35. The draw bar 15 which guides the woven fabric W at the front of the loom is supported by the upper end of an oscillating lever 44 which is pivotally supported by a shaft 43. The lower end of the swing lever 44 is connected to the other arm 42 of the lever intermediate 35 via a rod 45. Although it is not shown the connection of the swing lever 44, the swing lever 44 is connected to the templet 9 (as can be seen in Figure 1) which is able to slide from before back and vice versa on the job weave.
    Consequently, the reciprocating movement of the intermediate lever 35 causes oscillation of the oscillating lever 44 via the rod 45, thereby transmitting to the draw bar 15 and the templet 9, the movement of the toweling in the same direction as that of the tensioning roller 12 and the roll of implementation of the movement of the sponge cloth 28. The winder 19 is driven by a winding motor MW electrically connected to the control device of the winding CW to wind the winding. woven fabric W.
    The control device of the CR loom controls the operation of the drive motor of the MR loom and is connected to a rotary encoder 46 which can be actuated to detect the angular position of the loom. The control device of the loom CR stores the data of the angular position of the loom. The control device of the loom CR is connected to the weft insertion device 2, to the control device of the unwinding of the lower chain CG, to the device for controlling the unwinding of the pile chain CP, to the setting device the movement of the sponge fabric CT and the winding control device CW, as indicated by the arrows in FIG. 3. The control device of the loom CR generates actuation signals towards the weft insertion nozzles 2A to 2H and also drive signals to the motor of the unwinding of the lower chain MG, to the motor of the unwinding of the pile chain MP, to the motor for carrying out the movement of the sponge fabric MT and to the motor of the winding MW. Although the engine of the unwinding of the lower chain MG, the unwinding motor of the pile chain MP, the motor implementing the movement of the sponge fabric MT and the motor of the winding MW include servomotors, it can be act of any other electric motor.
    A pattern control device 47, in which the patterns of the velvet weave and the selvedge weave are adjusted via any suitable input device (not shown), is electrically connected to the loom control device. CR weaving machine. The control device of the loom CR extracts by reading the velvet weave pattern and the selvedge weave pattern from the pattern control device 47 at each predetermined angular position of the weaving loom in a cycle of weft formation, and generates actuation signals to the weft insertion device 2, the lower chain unwinding control device CG, the pile chain control device CP, the implementing the movement of the sponge fabric CT and the winding controller CW, depending on the weave patterns.
    In the weaving operation of the pile fabric of the sponge weave, the control device of the weaving machine CR reads out the pattern of the pile weave and generates actuation signals to the control device the unwinding of the pile chain CP and the device for implementing the movement of the toweling CT. As a result, the mechanism for carrying out the movement of the toweling fabric 37 causes the tensioning roll 12, the sponge fabric forming roll 28, the drawing bar 15 and the templet 9 to move forward. , or to the right, as shown in FIG. 3, during the loose insertion of the weft in the weaving operation of the terry cloth, thereby moving the draw tightening line W1 to the position indicated by the The mechanism for carrying out the movement of the toweling fabric 37 also causes the tensioning roll 12, the sponge fabric carrying roll 28, the drawing bar 15 and the templet 9 move backwards, or to the left, as shown in FIG. 3, during the rapid insertion of the weft in the weaving operation of the toweling, thus returning the draw tightening line W1 at the tamping position indicated by the solid lines in figure 3.
    Hereinafter, the outline of the selvedge armor set in the control device of the drawing 47 will be described in detail. Conventionally, the draw clamping line W1 is attached to the packing position of the weft weave. the fabric W in the weaving operation of the selvedge. In the present embodiment, when a selected weft insertion nozzle is activated to insert weft yarn Y into the selvedge weaving operation, the picking line W1 moves forward on a predetermined distance using the mechanism for carrying out the movement of the terry cloth 37.
    As indicated in FIGS. 1 and 2, eight weft insertion nozzles 2A to 2H are arranged, more specifically four rows of nozzles in the front-to-back or reciprocating direction of the loom and two rows of nozzles. when looking in the vertical direction of the loom. Referring to FIG. 4, in which the movement of the draw clamping line W1 is illustrated, the relationship between the positions of the outputs of the eight weft inserting nozzles 2A to 2H and the position of the open threads of FIG. the lower chain T (or threads of the pile chain TP). While the outputs of the weft insertion nozzles 2A to 2D are positioned at a distance from the threads of the lower warp T (or the threads of the pile chain TP), the outputs of the weft insertion nozzles 2E to 2H are positioned closer to the lower warp threads T (or pile string threads TP) than the outputs of the weft insertion nozzles 2A to 2D. The 2E and 2F frame insertion nozzles including. outlets are located closer to the lower warp T (or pile warp yarn) threads than the outputs of the insertion nozzles 2A to 2D, show little sign of failure in inserting a warp thread. frame Y. 2G and 2H weft insertion nozzles, the outputs of which are closest to the threads of the lower weft T (or the threads of the pile chain TP) among the outputs of the weft insertion nozzles 2A at 2H, are likely to manifest a failure in inserting a weft yarn Y.
    When any one of the weft inserting nozzles 2E to 2H is selected when weaving a selvage weave pattern, a program is provided providing instructions on the operation of the weave mechanism. of the movement of the toweling 37 and another program providing the instructions as to the moving distance of the picking line W1 according to the selected weft insertion nozzle (or in accordance with the distance from the line WL), and a program providing instructions as to the order of selection of the weft insertion nozzles 2A to 2H. FIG. 5 shows an example of a part of the operation in the weaving of a selvedge weave pattern, in which the weft insertion nozzles 2G, 2F, 2H and 2C are selected in this order for weft insertion, as indicated by the horizontal axis. When the weft inserting nozzle 2G or 2H, which is closest to the picking line W1, is selected, a relatively large displacement distance XI is set for the picking line W1. When the weft inserting nozzle 2F, which is farther from the picking line W1 than the weft inserting nozzles 2G and 2H, is selected, a relatively small displacement distance X2 is set for the feed line. tightening of pick Wl. Therefore, when the weft inserting nozzle 2F is selected, the load of the sponge fabric control mechanism 37 is reduced relative to the case in which the picking line W1 moves over the distance XI. When the weft inserting nozzle 2C, which is further away from the picking line W1 than the weft inserting nozzle 2F, is selected, the moving distance of the picking line of draw W1 is equal to zero and the draw clamping line W1 is attached to the tamping position which is represented by the point X3. Thus, when the weft insertion nozzle 2C is selected, no operation instruction is sent to the mechanism for carrying out the movement of the toweling 37.
    That is, when the weft insertion nozzles 2A to 2D are selected, the control device of the loom CR which extracts the drawing of the selvedge armor by reading does not provide any instructions to the setting mechanism. effect of the movement of the toweling fabric 37 for the displacement of the picking line W1. When the weft insertion nozzles 2E and 2F are selected, the control device of the loom CR instructs the sponge weave movement actuating mechanism 37 to move the pick line W1 to the distance X2 . When the weft insertion nozzles 2G and 2H are selected, the control device of the loom CR instructs the mechanism for carrying out the movement of the sponge cloth 37 to move the pick-up line W1 to the distance XI . When comparing the displacement distance of the picking line W1 in the weaving operation of the pile chain represented by the line in lines X4 in FIG. 5, the distance of movement of the line of In this embodiment, the torque tightening W1 is reduced. Such a reduction in the travel distance of the W1 pick line allows the multicolored weft insertion device to follow the high speed rotation of the loom.
    Hereinafter, the operation of the sponge weaving loom will be described in weaving cooperation of the selvedge with reference to FIGS. 4 and 5. When the operation of the loom passes from the weaving operation of the weaving chain of hair at the selvedge weaving operation and when the pattern control device 47 selects the weft insertion nozzle 2G, the control device of the weaving loom CR instructs the mechanism of implementation of the movement sponge cloth 37 to move the draw tightening line W1 to the distance XI. As a result, the mechanism for carrying out the movement of the toweling fabric 37 moves the tensioning roll 12, the sponge roll carrying roll 28, the drawing rod 15 and the turret 9 forwards. Thus, the draw clamping line W1 is shifted forwards along the distance XI in FIGS. 1 and 4, thereby increasing the space in the vertical direction between the upper and the lower ply of the plies. yarns of the lower chain T (or between the upper and lower layers of the pile chain yarns TP) at a position adjacent to the outlet of the weft inserting nozzle 2G, thereby stabilizing the yarn weft insertion through the 2G nozzle.
    When the end of the weft insertion by the nozzle 2G is reached, the mechanism for carrying out the movement of the terry cloth 37 moves the tensioning roller 12, the roll for carrying out the movement of the sponge cloth 28, the bar 15 and the turret 9 to the rear, thereby to return the picking line W1 to the tamping position (as represented by the solid lines of FIGS. 1 to 4) indicated by the point X3 in FIG. 5, in which the weft yarn Y is packed by the parts 5 of the profiled comb against the draw clamping line W1. In this case, the packing direction of the pieces 5 of the profiled comb and the return direction of the draw clamping line W1 are opposite to each other, so that a greater tamping force is achieved. that which is obtained when the draw clamping line W1 remains at a fixed position. Such intense tamping force is effective, especially in selvedge armor which requires a high packing weft density.
    Similarly, when the weft inserting nozzle 2F is selected, the picking line W1 is shifted forward on the distance X2. When the end of the weft insertion by the nozzle 2F is reached, the picking line W1 is returned to the tamping position indicated by the point X3 in FIG. 5, in which the weft yarn Y is packed by the parts 5 of the profiled comb against the draw clamping line Wl. When the weft inserting nozzle 2H is selected, the picking line W1 is shifted forward for the distance XI. When the end of the weft insertion by the nozzle 2H is reached, the picking tightening line W1 is returned to the tamping position X3 in which the weft yarn Y is packed by the pieces 5 of the profiled comb against the picking line of pick Wl. When the weft insertion nozzle 2C is selected, a normal weft insertion and a normal beating are implemented without moving the picking line W1.
    The first embodiment of the present invention offers the advantageous effects which are reproduced below: (1) in the first embodiment, in which the eight weft insertion nozzles 2Δ to 2H are fixed on the leaf 1, when the weft inserting nozzles 2E to 2H, which are disposed near the picking line W1, are used for weft insertion, the picking line W1 is moved to the before using the mechanism for carrying out the movement of the toweling fabric 37, thereby to increase the vertically spaced distances between the outputs of the weft insertion nozzles 2E to 2H and the upper and lower webs of the lower warp threads T (or threads of the pile chain TP). The chain tension is increased due to the movement of the picking line W1, so that a slack in the chain is obtained accordingly. As a result, the T (TP) warp yarns hardly form nests with the weft yarns Y and the weft insertion is stabilized. The weft inserting device having the eight weft inserting nozzles 2A through 2H attached to the leaf 1 has durability; (2) since the packing direction of the flapper comb pieces and the return direction of the pick-tightening line W1 are opposite to one another, an increase in the tamping force is obtained, said increase being effective in weaving a fabric which requires a high packing density of the weft; (3) in the first embodiment according to the present invention, the mechanism for carrying out the movement of the toweling cloth 37, which is usually used in the sponge weaving operation, is usually used in the operation weaving the selvedge so as to move the draw clamping line W1 so that the mechanism for carrying out the movement of the toweling cloth 37 having operational reliability is used effectively. Thus, by using the mechanism for carrying out the movement of the toweling fabric 37 to act as a device for moving the tow line of the present invention, the loom according to the present invention can dispense with a mechanism separated to move the pick line in the selvedge weaving operation; (4) the displacement distance of the picking line W1 in the selvedge weaving operation is less than that used in the weaving operation of the pile chain, so that the setting mechanism The movement of the sponge fabric 37 can follow the high speed rotation of the sponge fabric loom; (5) the sponge weave movement mechanism has been developed and has been practiced for use in sponge weaving in a sponge weave loom and has achieved industrial scale. Therefore, when using the mechanism for carrying out the movement of the toweling fabric 37 as a device for moving the towing line according to the present invention, the movement of the draw clamping line W1 is stabilized as well as the frame insertion; (6) according to the first embodiment of the present invention, when one of the weft insertion nozzles, which is not arranged in close proximity to the pick-up line W1 among said plurality of insertion nozzles 2A to 2H, inserting the weft yarn Y, the displacement device of the picking line 37 moves the picking line W1 in the direction in which the warp threads T (TP) are moving, on a displacement distance X2 which is smaller than the displacement distance XI obtained when the weft insertion nozzles 2G, 2H, closest to the picking line W1, insert the weft yarn Y. Therefore, it is possible to move the pick-up line W1 only over the minimum distance required for the stability of the weft insertion. Thus, an effective reduction of the driving load of the mechanism for carrying out the movement of the toweling 37 is obtained.
    Referring to FIG. 6, which shows the shape of the movement of the pick-up line of FIG. 4 in the second embodiment according to the present invention, it can be seen that the second embodiment differs from FIG. the first embodiment in that the design of the selvedge armor has been modified. In the second embodiment, like reference numerals designate parts identical to those used in the description of the first embodiment, so that the detailed description of said parts will be omitted. The selection of the weft insertion nozzles for the edge weave drawing of the second embodiment is set in the same order as that of the first embodiment. The selvedge weave pattern of the second embodiment indicates a continuous weft insertion pattern such as satin weave in accordance with which, prior to tamping a weft yarn inserted through the dye nozzle. In the selected frame insertion 2G, the insertion of the frame via the subsequently selected frame insertion nozzle 2F is implemented.
    When the weft inserting nozzle 2G is selected in the selvedge weaving operation, the mechanism for carrying out the movement of the sponge cloth 37 is actuated by means of the instruction emanating from the control device of the loom CR for moving the draw clamping line W1 forward on the distance XI to thereby facilitate the insertion of weft by the weft insertion nozzle 2G. Due to the absence of tamping after weft insertion, the picking line W1 does not return to its pressing position. Since the picking line W1 in the weft insertion by the weft inserting nozzle 2F is shifted forward by the distance X2, the picking line W1 undergoes a slight displacement. rearward. While the pick-up line W1 is disposed forward on the distance X2, the weft insertion nozzle 2F implements the weft insertion. When the weft insertion by the weft inserting nozzle 2F is completed, the picking tightening line W1 returns to its tamping position X3 in which tamping is carried out via the pieces 5 of the profiled comb. Thus, the present invention can be applied to the weaving of the selvedge weave pattern, in which no tamping takes place before a subsequent weft insertion. In addition, with respect to the first embodiment in which the pick-tightening line W1 resumes its pressing position with each rotation of the loom, the second embodiment in which the distance of travel of the loom is reduced. It is advantageous in this case because a subsequent reduction in the load of the drive motor MT is achieved for carrying out the movement of the toweling.
    The present invention has been described in the context of the first and second embodiments which have been described above, but it is not limited to these embodiments. It is clear that the invention can be implemented in different ways as illustrated below as an example.
    The device for moving the clamping line of the present invention is not limited to the mechanism for carrying out the movement of the toweling fabric 37; it may be a drive mechanism that can be actuated to synchronously drive the engine of the unwinding of the lower chain MG, the unwinding motor of the pile chain MP and the winding motor MW. By rotating the winding motor MW by forming a predetermined angle in the winding direction of the woven fabric W and by rotating the motor of the unwinding of the lower chain MG and the motor of the unwinding of the MP pile chain forming a predetermined angle in the unwinding direction of the warp threads T (TP), it is possible to move the pick tightening line W1 forward at any desired distance. Furthermore, by rotating the winding motor MW by forming a predetermined angle in the unwinding direction of the woven fabric W and by rotating the motor of the unwinding of the lower chain MG and the unwinding motor of the pile chain MP at a predetermined angle in the winding direction of the warp threads T (TP), the pick-up line W1 can be returned to its pressing position. The present invention can also be applied to a loom other than the sponge weaving loom, which does not have a spooling motor MP.
    The present invention can be applied to the case in which six weft insertion nozzles are attached to the wing 1 or to the case in which more than eight weft insertion nozzles are attached to the wing 1.
    The present invention is not limited to the application of the weaving operation of the selvedge of a sponge weave: it can be applied to weaving looms which weave fabrics other than terry cloths.
    权利要求:
    Claims (7)
    [1]
    A loom comprising a multicolor weft insertion device (2) having a plurality of weft insertion nozzles (2A-2H) for selectively inserting a plurality of weft yarns (Y) into a host of warp yarns (T, TP) for weaving a fabric (W), the weft inserting nozzles (2A-2H) being attached to a leaf (1); characterized in that the weft insertion nozzles (2A-2H) are juxtaposed in the front-to-back direction of the loom, the loom including a shearing line displacement device (37) for moving the pick-up line (W1), wherein at least when the weft insertion nozzle (2G, 2H) closest to the pick-tightening line (W1) among said plurality of weft insertion nozzles ( 2A-2H) inserts the weft yarn (Y), the pick-up line displacement device (37) moves the pick-tightening line (W1) in a direction in which the warp yarns (T, TP) ) are set in motion.
    [2]
    2. Loom according to claim 1, characterized in that, at least after insertion of the weft yarn (Y) via the weft insertion nozzle (2G, 2H) closest to the clamping line of of the picking line (37) returns the picking line (W1) to a tamping position (X3) in which the weft yarn (Y) is packed.
    [3]
    3. Loom according to claim 1 or 2, characterized in that the loom has a mechanism for implementing the movement of the toweling for use in a sponge weaving loom, the device for moving the line. clamping device (37) representing the mechanism for carrying out the movement of the toweling.
    [4]
    4. Loom according to claim 3, characterized in that, at least when the weft insertion nozzle (2G, 2H) closest to the picking line (W1) inserts the weft yarn (Y ), the travel distance (XI) of the pick-up line (W1) via the sponge-weave movement mechanism (37) is less than the travel distance (X4) of the draw line of pick (W1) in a sponge weave operation.
    [5]
    5. Loom according to any one of claims 1 to 4, characterized in that the loom is a sponge weave loom which alternates the weaving operation of the terry cloth and the weaving operation of the weaving machine. selvedge, the displacement device of the picking line (37) being put into operation in the weaving operation of the selvedge.
    [6]
    A loom according to claim 1, characterized in that when one of the weft inserting nozzles (2A-2F) which is not closest to the picking line (W1) among said a plurality of weft inserting nozzles (2A-2H) inserting the weft thread (Y), the picking line displacement device (37) moves the picking line (W1) in a direction in which the warp yarns (T, TP) are displaced over a movement distance (X2) which is less than the displacement distance (XI) in force when the weft insertion nozzle (2G, 2H) closest to the picking line (W1) inserts the weft thread (Y).
    [7]
    A loom according to claim 6, characterized in that after the displacement of the pick-up line (W1) via the displacement device of the pick-up line (37) is moved to the travel distance (XI). , X2) and at the end of the insertion of the weft yarn (Y) via the weft inserting nozzle, the displacement device of the picking line (37) moves the picking line (W1). directly on the different displacement distance (XI, X2) without returning the picking line (W1) to its tamping position (X3).
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    BE516915A|
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    同族专利:
    公开号 | 公开日
    ITTO20100363A1|2010-11-07|
    CN101880933B|2012-03-21|
    CN101880933A|2010-11-10|
    JP5182211B2|2013-04-17|
    JP2010261122A|2010-11-18|
    IT1399981B1|2013-05-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH11107128A|1997-08-05|1999-04-20|Tsudakoma Corp|Picking nozzle selector for fluid jetting type loom and cutting treatment of weft yarn therewith|
    JP2001032148A|1997-08-05|2001-02-06|Tsudakoma Corp|Apparatus for selecting weft insertion nozzle of fluid jet type loom|
    WO2000063474A1|1999-04-20|2000-10-26|Picanol N.V.|Device for feeding weft yarn lengths for use in a jet-weaving machine|
    JPS5947448A|1982-09-07|1984-03-17|Nissan Motor|Arrangement structure of wefting nozzle in plural weft yarn selecting and wefting apparatus|
    JPH0515811B2|1984-12-04|1993-03-02|Tsudakoma Ind Co Ltd|
    JP2587968B2|1987-12-23|1997-03-05|津田駒工業株式会社|Multicolor weft insertion device for fluid jet loom|
    IT1267447B1|1993-09-13|1997-02-05|Toyoda Automatic Loom Works|PROCESS AND APPARATUS FOR THE FORMATION OF THE HAIR IN A MACHINE FOR WEAVING HAIR FABRICS.|
    CN1061714C|1995-10-10|2001-02-07|特克斯蒂尔马有限公司|Mechanical loom with pneumatic weft threat insertion|
    JP2006291367A|2005-04-06|2006-10-26|Tsudakoma Corp|Driving gear of terry motion member in pile loom of cloth moving type|
    DE102005028126A1|2005-06-10|2006-12-14|Picanol N.V.|terry|
    法律状态:
    2020-02-05| MM| Lapsed because of non-payment of the annual fee|Effective date: 20190531 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2009112399|2009-05-06|
    JP2009112399A|JP5182211B2|2009-05-06|2009-05-06|Multi-color weft insertion device in loom|
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