• 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:
    CONVEYING DEVICE FOR TRANSPORTING FOOD. In a conveyor device for transporting food the present invention includes a large number of bar members (60) that form the conveyor belt, coupling members (62) that couple the bar members (60) with one another, a guide rail (82) that supports the conveyor belt, and a sprocket (48, 50) that engages with tooth-shaped portions (72d) formed on the coupling members (62). Each coupling member (62) includes a metal insert member (64) and a wear-resistant resin member (72) that incorporates the metal insert member (64) in a folded shape with interior space (s), has both end portions coupled to a first bar member (60) and has a pair of slotted holes (74a, 66a, 74b, 66b) in which a second bar member (60) which is adjacent to the first bar member ( 60) is loosely adjusted. The wear-resistant resin members (72) form the tooth-shaped portions (72d) and sliding surfaces (78a, 78b) that slide on the guide rail (82), and a gear portion of the sprocket (48, 50) that meshes with the tooth-shaped portions is formed of a wear-resistant resin. With this configuration, contact pressure (...).
    公开号:BR112015015279B1
    申请号:R112015015279-1
    申请日:2013-12-19
    公开日:2021-03-02
    发明作者:Tomohiko Matsuzaki；Kou Ishikura；Takeshi Chimura；Shuichi Fujita；Takayuki Kishi；Akira Sekino
    申请人:Mayekawa Mfg. Co., Ltd；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [0001] The present invention relates to a conveyor device for transporting food that can be applied to food processing in an enclosed space and, more particularly, can be applied to processing such as cooling, freezing, heating and drying. BACKGROUND
    [0002] In a conventional manner a configuration has been employed, in which an endless spiral conveyor is arranged in a freezing processing freezer is performed on the food and the like that is transported by the endless spiral conveyor as a processing performing configuration such as heating, drying and freezing the food. The spiral spiral conveyor provides an advantage of achieving a smaller conveyor installation area and saving labor by reducing the operation of placing and removing a product to be frozen in and out of the freezer. Patent Document 1 discloses an example of such a conveyor device, which is described schematically below with reference to figure 21.
    [0003] In figure 21, an endless spiral conveyor device 200 has an endless spiral conveyor belt 204 arranged in a vertical direction in an area surrounded by a plurality of columns 202. An electric motor 206 is arranged in an area around around an inlet of the endless spiral conveyor 204 and an auxiliary transmission device 208 is arranged in an interior area of the endless spiral conveyor belt 204. The electric motor 206 rotates the auxiliary transmission device 208 by means of a gear 210. A plurality of columns 212 forming the auxiliary transmission device 208 rotates to apply driving force to the endless spiral conveyor belt 204.
    [0004] The endless spiral conveyor belt 204 includes an entry path 204A, an upward spiral path 204B arranged in the inner area of columns 202, a return path 204C arranged in the uppermost portion, a downward spiral path 204D and a 204E exit path. The uppermost portion of the ascending spiral path 204B is connected to the uppermost portion of the downward spiral path 204D via the return path204C. The 204C return path does not involve inversion of the transport surface and returns with the same transport surface always facing upwards. The upward spiral path 204B and the downward spiral path 204D are alternately arranged in the vertical direction and move in opposite directions.
    [0005] Patent Document 2 and Patent Document 3 disclose a configuration of a conveyor belt that forms a conveyor device. In figure 6 in Patent Document 2, a configuration is disclosed that includes tooth-shaped portions, in an involute form, arranged at an equal interval in an outer lateral portion of the conveyor belt and a toothed wheel that meshes with the tooth-shaped portions and that drives the conveyor belt with the sprocket.
    [0006] Patent Document 3 discloses a configuration in which supported portions, with a U-shaped cross-section opening in the horizontal direction, are arranged on both side portions of the conveyor belt, and a guide rail loosely adjusted to the portions supports are provided, and the guide rail movably supports the conveyor belt. Patent Documents 2 and 3 disclose a configuration in which an anti-fall plate, which prevents a transported product from falling, protrudes upwards from a conveyor belt conveyor surface and is fixed to two adjacent bars that form the conveyor belt. REFERENCE LIST
    [0007] Patent literature
    [0008] Patent Document 1 - Open Japanese Patent Application number 2007-169059.
    [0009] Patent Document 2 - Open Japanese Patent Application number 2008-56,489 (figure 6)
    [0010] Patent Document 3 - Japanese Utility Model number 3,123,226. SUMMARY TECHNICAL PROBLEM
    [0011] Generally, the tooth-shaped portions and the toothed wheel that meshes with the tooth-shaped portions, disclosed in Patent Document 2, are formed of metal such as stainless steel. Thus, metal powder produced by friction in the gear portion could adversely affect the quality of a product being transported, such as food. The supported portions having the U-shaped cross section disclosed in Patent Document 3 have two following problems: specifically, in a low temperature environment such as a freezer, the guide rail could protrude inwardly from each of the portions supported due to differences between the material of the supported portion and the material of the guide rail that supports the supported portion in a linear expansion coefficient.
    [0012] In addition, there is a problem that the driving torque increases due to the high contact pressure between the supported portion and the guide rail, attributable to the difference between the supported portion and the guide rail in the linear expansion coefficient and that uses a sliding surface between the supported portion and the guide rail, increase. In addition, there is a problem that, once the guide rail is inserted into the supported portion that has the U-shaped cross section, it is difficult to remove loosening of the conveyor belt.
    [0013] The anti-fall plate disclosed in Patent Documents 2 and 3 is a single anti-fall plate, fixedly adjusted to the two bars that form the conveyor belt. Thus, the relative position between the adjacent bars is restricted. As a result, there is a problem that an intricate curved line shape of the conveyor belt cannot be formed on a curved portion of the conveyor belt. In addition to this there is a problem that the anti-fall plate has portions fixedly fixed to the two bars formed, and thus has a complicated structure and requires a high manufacturing cost.
    [0014] Thus, in view of the problems of conventional techniques, an objective of the present invention is to prevent the production of metal dust and to prevent the contact and wear pressure from increasing in the sliding portion between the conveyor belt and the guide rail in the environment low temperature. Another objective is to allow the loosening of the conveyor belt to be easily repaired, to achieve higher design freedom of the conveyor belt by allowing the shape of the curved intricate line to be formed in the curved portion of the conveyor belt, and to simplify the structure of the anti-fall plate. . SOLUTION TO THE PROBLEM
    [0015] The present invention is applied to the conveyor device for transporting food that processes food while transporting food with a spiral conveyor belt arranged in a vertical direction in an enclosed space, and includes a large number of bar members that are arranged in parallel for forming the conveyor belt, coupling members that are attached to both ends of each of the bar members and couple the bar members with each other; a guide rail that slidably supports the conveyor belt including the bar members; and a gear wheel that engages with tooth-shaped portions formed on the coupling members.
    [0016] To achieve the goal, in the conveyor device for transporting food according to the present invention, each coupling member includes a metal insert member and a wear resistant resin member that incorporates the metal insert member, has a folded shape with an interior space, has both end portions coupled to a first base member, and has a pair of slotted holes, in which a second member is adjacent to the first member and loosely adjusted. In addition, the wear-resistant resin members form the tooth-shaped portions and sliding surfaces that slide over the guide rail, and a gear portion of the sprocket that meshes with the tooth-shaped portions is formed of a wear-resistant resin. .
    [0017] In this configuration the guide rail supports the conveyor belt from below. Each of the coupling members provided for both ends of each of both ends of the members restricts the two adjacent bar members. Thus, the conveyor belt on which the various members are arranged in positions parallel to each other, can be formed. On the other hand, the coupling members are coupled in series along the transport path by means of the bar members. The second bar member can move in the direction of transport in the slotted holes. Thus, relative displacement between adjacent boom members in the transport direction can be adjusted. Curving of the conveyor belt can be achieved by changing the gap between both ends of the bar members. The sprocket applies drive force to move the coupling members in the transport direction, the coupling members slide over the guide rail while being supported by the guide rail and the conveyor belt moves in the transport direction.
    [0018] The coupling member includes the wear-resistant resin member that incorporates the metal insert member. Thus, light weight can be achieved with sufficient stiffness to restrict the maintained bar members. Thus, the conveyor device as a whole may be lighter in weight. The wear-resistant resin member forms the tooth-shaped portions of the coupling members, the sliding surface that slides over the guide rail, and the gear portion of the sprocket that meshes with the rollers. Thus, wear and abrasion dust production can be prevented on the sliding surface and the gear portion. Thus, the quality of the food can be prevented from being adversely affected.
    [0019] The wear-resistant resin used in the present invention is, for example, what is known as engineering plastic, such as ultra-high molecular polycarbonate (PC), polyamide (PA), and polyether ether ketone (PEEK), fluorocarbon resin such as Teflon (registered trademark), nylon resin, or the like.
    [0020] The coupling members slide over the guide rail through the sliding surface and do not surround the rail as in the case supported in the Patent Document 3. Thus, the loosening of the conveyor belt can be easily corrected and the contact pressure and the wear between the guide rails does not increase in the low temperature environment.
    [0021] In the present invention the relative positions between the two adjacent boom members in the direction of transport are not fixed, so that the boom members can form an intricate curved line shape on a curved portion of the conveyor belt. Thus, higher design freedom for the transport path can be achieved. In addition, sliding surfaces are formed on the coupling members, and thus no special members are required to form the sliding surfaces. Thus, the components of the conveyor belt can be simplified and can be manufactured at a low cost. The coupling member is folded in half and the first member of the bar is supported in both two extreme portions, whereby the coupling member may have higher rigidity.
    [0022] In one aspect of the present invention each metal insert member includes a strip shaped metal plate that has a folded shape with an inner space, first and second holes into which the first bar member is inserted are respectively formed in both the extreme portions of the metal insert member, and a pair of slotted holes in which the first bar member is loosely fitted, are formed from both extreme portions towards a top portion of the metal insert member. In this configuration, the uncertain metallic member with higher rigidity is disposed in a portion that comes into contact with and that supports or fixes the bar member. Thus, the coupling member can have high rigidity and the bar members can be strongly supported.
    [0023] In one aspect of the present invention the tooth-shaped portions are each formed over one of the two extreme portions of each coupling member, in order to face out from the conveyor belt including the bar members.
    [0024] Thus, gearing with the cogwheels arranged adjacent to the side of the conveyor belt can be easily achieved. Thus, the tooth-shaped portions are formed in both extreme portions of the coupling members coupled to the bar members and thus can have high rigidity.
    [0025] In one aspect of the present invention each wear-resistant resin member included in the coupling members includes a guide portion that protrudes in the direction of the guide rail on an outer side of the sliding surface, and each guide portion includes a guide surface which is in sliding contact with a lateral surface of the guide rail.
    [0026] As described above, the coupling member includes the guide surfaces on the outer side of the sliding surface, whereby the conveyor belt can be prevented from falling off the guide rail. Also in this configuration the coupling members are in sliding contact with the guide rail with the sliding surface and the guide surfaces only, and thus do not surround the rail as in the case of the member supported in Patent Document 3. Thus, the contact pressure and wear between the guide rails can be prevented from increasing in the low temperature environment, and the loosening of the conveyor belt can be easily corrected.
    [0027] In one aspect of the present invention an upper edge of the guide rail is covered with a cover made of a wear-resistant resin and the cover made of the wear-resistant resin is in sliding contact with the sliding surfaces of the coupling members and the guide surfaces.
    [0028] Thus, wear and abrasion powder production on the sliding surface formed between the coupling member and the guide rail can be prevented and the food transported can be prevented from being adversely affected by the abrasion powder.
    [0029] In one aspect of the present invention each sliding surface includes a pair of sliding surfaces that are arranged to be vertically symmetrical with respect to the bar members and each guide surface includes a pair of guide surfaces that are arranged to be vertically symmetrical with respect to bar members.
    [0030] The conveyor belt forms the endless conveyor path as follows. Specifically, the endless conveyor belt is inverted on the return path to return to the extreme start of transport portion. In this configuration, on the endless conveyor path, excluding the return path, the coupling members are supported by the guide rail by means of one of the pair of sliding surfaces on the underside, and are guided by the guide rail by means of one. pair of guide surfaces on the underside.
    [0031] On the return path where the endless conveyor belt is inverted, the coupling members are supported by the guide rail by means of one of the pair of sliding surfaces on the upper side and are guided by the guide rail by means of one pair of guide surfaces on the upper side. Thus, the conveyor belt can be supported in a stable manner by the guide rail and can be guided without falling off the guide rail on the return path where the conveyor belt is inverted.
    [0032] In one aspect of the present invention, each coupling member has a shape such that a width of the coupling member gradually increases from both extreme portions towards the top portion, to have a wedge shape, and the the top portion of each coupling member is configured to be able to penetrate the interior space of the adjacent member of the coupling members.
    [0033] Thus, the top portion of one of the adjacent coupling members can easily penetrate the interior space of the other of the adjacent coupling members. Thus, the first bar member and the second bar member restricted by a single coupling member can be easily moved relative to each other in the direction of transport. Thus, higher design freedom can be achieved for the curved line formed by the transport path.
    [0034] In one aspect of the present invention, each coupling member includes a first parallel section disposed in the top portion, the first parallel section having parallel outer surfaces and a second parallel section disposed over a portion which includes both end portions and which the top portion excludes the second parallel section having parallel outer surfaces and a greater width than that of the first parallel section. The second parallel section has parallel inner surfaces and forms the interior space into which the first parallel section is able to penetrate.
    [0035] Thus, when one of the adjacent coupling members penetrates the interior space of the other of the adjacent coupling members, no space in one direction of the longitudinal axis is formed between the coupling members. Thus, the coupling members can be arranged to be moved smoothly relative to each other in the transport direction, so that the transport operation is carried out smoothly. Thus, the transport path can be easily curved to have the highest design freedom and the phenomenon of shocks involving unstable transport speed in positions in the transport direction of the conveyor belt can be prevented.
    [0036] In one aspect of the present invention each metal insert member includes a return portion disposed over at least one of both end portions, the return portion returning towards the top portion and the return portion includes a third hole in which the first member of the bar is tightly adjusted. Thus, the coupling members can be of higher rigidity and can be strongly coupled to the bar members.
    [0037] In one aspect of the present invention the spiral conveyor belt includes an endless conveyor belt that includes a return path in which the spiral conveyor belt is inverted at an end end portion of the spiral conveyor belt to return to a portion initial end of the spiral conveyor belt and the guide rail is arranged over the entire length of the endless conveyor belt. The conveyor device includes a tension adjustment mechanism that is arranged in a path of the endless conveyor belt and adjusts the tension of the endless conveyor belt. The conveyor device also includes a transport mechanism that includes the sprocket and a drive device for the sprocket.
    [0038] Thus, the loosening of the endless conveyor belt can be adjusted by means of the tension adjustment mechanism. When the contact pressure and the frictional force between the guide portion and the guide rail increases, the knocking phenomenon that involves unstable transport speed of the conveyor belt due to the periodic change of the contact pressure and the frictional force occurs. Thus, the smooth movement of the conveyor path is impaired. The present invention can prevent this knocking phenomenon.
    [0039] On the return path the conveyor belt is supported by the guide rail and thus can be prevented from loosening.
    [0040] In one aspect of the present invention the endless conveyor belt includes an inlet path that is arranged in a horizontal direction, an upward spiral path that has a lower end portion coupled to the inlet path and that ascends in a spiral direction from a downstream side in a transport direction, a return path that returns from the uppermost portion of the upward spiral path, a downward spiral path coupled to the return path and arranged so that stages of the upward spiral path and stages of the downward spiral path are arranged alternately, the downward spiral path descending in a spiral, an exit path that is coupled to a lower portion of the downward spiral path and is arranged in the horizontal direction and the return path that returns in one end of the outbound path towards the bottom of the outbound path and continues to one end of the inbound path.
    [0041] The upward spiral path and the downward spiral path are arranged so that stages on the upward spiral path and stages on the downward spiral path are alternately arranged as described above. Thus, space savings can be achieved. In addition, the food is arranged and removed from a lower portion, so that the food can be easily arranged on and removed from the spiral conveyor belt. Thus, labor savings and higher income can be achieved. ADVANTAGE EFFECTS
    [0042] With the present invention metal powder can be prevented from being produced on the sliding surface between the components of the conveyor device and the quality of a product transported can be prevented from being adversely affected.
    [0043] In addition, the contact pressure and wear of the sliding portion between the conveyor belt and the guide rail can be prevented from increasing in a low temperature environment such as a freezer, and the loosening of the conveyor belt can be easily corrected. In addition, an intricate curved line can be formed on a curved portion of the conveyor belt, whereby higher design freedom can be achieved for the curved line formed by the conveyor belt. BRIEF DESCRIPTION OF DRAWINGS
    [0044] Figure 1 is a perspective view of an entire conveyor device according to a first embodiment of the present invention.
    [0045] Figure 2 is a front view showing an outlet portion of the conveyor device.
    [0046] Figure 3 is a front view showing an inlet portion of the conveyor device.
    [0047] Figure 4 is a sectional view of a transport mechanism of the conveyor device.
    [0048] Figure 5 is a side cross-sectional view showing part of a transport path of the conveyor device.
    [0049] Figure 6 is a plan view of the transport path.
    [0050] Figure 7 is a side view of the transport path.
    [0051] Figure 8 is a perspective view showing members and coupling of the conveyor device.
    [0052] Figure 9 is a perspective view of the coupling members in a different direction.
    [0053] Figure 10 is a perspective view of an insert member of the coupling members.
    [0054] Figure 11 is a block line diagram showing the control system for the conveyor device.
    [0055] Figure 12 is a side cross-sectional view showing a part of a conveyor device according to a second embodiment of the present invention.
    [0056] Figure 13 is a plan view of the transport path shown in figure 12.
    [0057] Figure 14 is a side view of the transport path shown in figure 12.
    [0058] Figure 15 is a perspective view of coupling members of the conveyor device shown in figure 12.
    [0059] Figure 16 is a perspective view of the coupling members shown in Figure 15 in a different direction.
    [0060] Figure 17 is a perspective view of an insert member of the coupling members shown in figure 15.
    [0061] Figure 18 is a cross-sectional view along line A-A in figure 15.
    [0062] Figure 19 is a perspective view of an entire conveyor device according to a third embodiment of the present invention.
    [0063] Figure 20 is a perspective view of the entire conveyor device according to a fourth embodiment of the present invention.
    [0064] Figure 21 is a front view of an entire conventional spiral endless conveyor device. DETAILED DESCRIPTION
    [0065] Modalities of the present invention shown in the accompanying drawings will now be described in detail. It is designed, however, that dimensions, materials, shapes, relative positions, and the like, of components described in the embodiments are to be construed as illustrative and not limiting the scope of the present invention, unless otherwise specified. FIRST MODE
    [0066] A first embodiment of the present invention applied to a conveyor device arranged in a freezer and which freezes food will be described with reference to figures 1 to figure 11. In figure 1 a freezer 10 that has a closed structure that excludes an entrance opening 10a and an outlet opening 10b is arranged, and a conveyor device 12A is arranged in the freezer 10.
    [0067] An endless conveyor path 14 arranged on a conveyor device 12A includes an inlet path 14A that penetrates freezers 10 through the inlet opening 10a; an upward spiral path 14B that spirals upward from the entry path 14A, a return path14C that returns from the uppermost portion on the upward spiral path 14B, a downward spiral path 14D arranged so that stages of the upward spiral path 14B and stages of the downward spiral path 14D are alternately arranged, the downward spiral path spiraling down from the return path 14C; an exit path 14E extending from the lowest stage of the downward spiral path 14D to the outside of the freezer 10 through an outlet opening 10b, and a return path 14F which is inverted at one end in exit path 14E with a guide gear 16, and then is inverted again with a guide roller 18 to continue to the inlet path 14A. The upward spiral path 14B and the downward spiral path 14D move in opposite directions. The return path14C returns with the same transport surface always facing upwards.
    [0068] As shown in figure 2, a drive motor 16a is provided on the guide gear 16. A tension adjustment mechanism 20 for adjusting tension on the endless conveyor path 14 is disposed on an outer side of a side wall 10c in the freezer 10 over which the outlet opening 10b is formed. The tension adjustment mechanism 20 includes a pair of guide sprockets 22 and 22, and a tension roller o 24 that faces return path 14F. The tension roller 24 can be moved in a vertical direction by means of a tension weight 26. The tension of the endless conveyor path 14 is adjusted by the movement of the tension roller 24. A tension detection sensor 28 that detects the tension of the return path 14F is arranged in a portion of the output side of the tension roller 24.
    [0069] For example, the tension detection sensor 28 can be a non-contact sensor or it can employ a system to detect counter forces that act on a movement device 26 of the tension roller 24 and that calculates the tension of the return path 14F from the detected value. The value detected from the voltage detection sensor 28 is entered for a control device 30 (refer to figure 11).
    [0070] Figure 3 shows the inlet path 14A that protrudes outward from the freezer 10 through the inlet opening 10a. Food is disposed on the conveyor belt in the entry path 14A.
    [0071] A conveyor mechanism 32 which is disposed adjacent to the conveyor belt which constitutes the spiral conveyor path and moves the conveyor belt in a transport direction, and a housing 34 which is vertically long and incorporates a conveyor mechanism 32 remains in the freezer 10. A configuration of the transport mechanism 32 will be described with reference to figure 4.
    [0072] In figure 4 an upper portion of the housing 34 is arranged through a ceiling wall 10d of the freezer 10 to protrude out of the freezer 10. A drive motor 36 and a decelerator 38 are arranged on a top surface of the housing 34. Two axes of rotation 40 and 42 are arranged in parallel in the vertical direction in the housing 34. Upper ends of the axes of rotation 40 and 42 protrude to reach a normal temperature area outside freezer 30, and are supported by thrust bearings 44 and 46 supported on the 10d ceiling wall. The axes of rotation 40 and 42 have a position in the horizontal direction fixed by a plurality of intermediate bearings 47 arranged in the vertical direction and fixed to the housing 34. A plurality of gear wheels 48 and 50 are respectively attached to the axes of rotation 40 and 42 in positions corresponding to heights of the entry path 14A, the upward spiral path 14B, the downward spiral path 14D, the exit path 14E and the return path 14F. By placing thrust bearings 44 and 46 in the normal temperature range outside the freezer, 10 much longer service lives of thrust bearings 44 and 46 can be achieved.
    [0073] Each of the sprockets 48 and 50 meshes with tooth-shaped portions 72d (refer to figure 6) of coupling members 62 coupling members described later 62 that form the conveyor belt, and move the conveyor belt forming the endless conveyor path 14 in a transport direction. Spur gears 51 and 52 are attached to upper edge portions of the rotation axes 40 and 42. Teeth count sensors 54 and 56 that count the number of spur gears 51 and 52 traversing are arranged on inner surfaces facing the gears straight lines 51 and 52. The axes of rotation 40 and 42 are rotated in the opposite direction by the drive motor 36, with the straight gears 51 and 52 engaging each other. The sprocket 48 engages with tooth-shaped portions 72d arranged in the entry path 14A and the upward spiral path 14B. The sprocket 50 engages with the tooth-shaped portions 72d arranged on the downward spiral path 14D and return path 14F. Entry path 14a and return path 14F as well as upward spiral path 14B and downward spiral path 14D move in opposite directions.
    [0074] Voltage adjustment devices 58, each including a torque motor 58a and a sprocket 58b driven by torque motor 58a are arranged at the output ends of the return path 14C and the output path 14E. The tension adjustment devices 58a each rotate the sprocket 58b at a slightly faster speed than the speed of movement of the endless conveyor path 14, so that loosening of the endless conveyor path 14 in the installed portions can be corrected.
    [0075] Figures 5 to figure 7 each show a part of the upward spiral path 14D and the downward spiral path 14D, and show spiral conveyor belts 15a 15b, 15c and 15d arranged in a spiral in the vertical direction. As shown in Figure 6, the spiral conveyor belts 15a through 15d include a large number of round bars 60 arranged in a horizontal direction. Both ends of the individual round bars 60 are provided with coupling members 62, the round bars 60 are coupled together through the coupling members 62 to be arranged at a predetermined interval.
    [0076] Figures 8 through figure 10 are enlarged views of coupling members 62. Coupling member 62 includes an insert member 64 and a wear-resistant resin member 72 that incorporates insert member 64. As shown in 10, insert member 64 is formed by folding a strip shaped stainless steel plate with an inner space "s" and is processed to have a shape such that the width of the coupling member gradually increases from a top portion 64a towards both extreme portions to have a wedge shape. The insert member 64 has the top portion 64a having a flat shape, sloping portions 64b and 64c formed on both sides of the top portion 64a, a bottom portion 64d continuing to the sloping portion 64b and a bottom portion 64c which continues to the sloping portion 64c. Thus interior side surfaces that form an interior space "s" that gradually expands from the central portion to both extreme portions are formed.
    [0077] Slotted holes 66a and 66b that face each other are formed in portions of the inclined portion 64b and 64c next to the top portion 64a. Holes 70a 70b and 70c are formed in bottom portions 64d and 64e. Long sides 68a and 68b of the slotted holes 66a and 66b are in the transport direction and the holes 70a, 70b and 70c are arranged in a straight line to be able to accommodate a single round bar 60.
    [0078] The wear-resistant resin member 72 shown in figure 8 and figure 9 is made by injection molding using an injection molding machine to have a shape to cover the insert member 64. Thus, a main body portion of the wear-resistant resin member 72 has a shape in which inner side surfaces gradually widen, so that the inner space "s" widens from a top portion 72a towards both extreme portions as in the case of the insert member 64.
    [0079] Examples of the wear-resistant resin member material 72 include, as described above, what is known as engineering plastic such as ultra high molecular polycarbonate (PC), polyamide (PA), and polyether ether ketone (PEEK ), fluorocarbon resin such as teflon (registered trademark), nylon resin, or the like.
    [0080] The wear-resistant resin member 72 includes the flat top portion 72a, the inclined portions 72b and 72c formed on both sides of the top portion 72a, a tooth-shaped portion 72d formed integrally with a extreme portion of the inclined portion 72b and guide portions 72e and 72f formed between the inclined portion 72b and the tooth-shaped portion 72d. The tooth-shaped portions 72d are arranged on an outer side of the spiral conveyor belt 15a through 15d. Slotted holes 74a and 74b having the same shapes as slotted holes 66a and 66b are formed in portions of the sloped portions 72b and 72c overlapping the slotted holes 66a and 66b of the insert member 64.
    [0081] Round holes 76a and 76b are formed in positions of the insert member 64 that superimpose the holes 70a and 70b. A single round bar 60 is tightly fitted to the round holes 76a, 76b and 70c. The round bar 60 adjacent to the aforementioned round bars 60 is inserted into the slotted holes 66a and 66b. This round bar 60 can move towards the long sides 68a and 68b in the slotted holes 66a and 66 b.
    [0082] Thus, two adjacent round bars 60 are restrained on a single coupling member 62 and can be relatively arranged in the direction of transport of the conveyor belt.
    [0083] Sliding surfaces 78a, 78b in sliding contact with a guide rail 82 formed along the endless conveyor path 14, are formed respectively on the upper and lower surfaces of the inclined portion 72b. Guide surfaces 80a and 80b in sliding contact with a lateral surface of the guide rail 82 are formed in the vertical direction in the guide portions 72e and 72f. The tooth-shaped portions 72d engage with the sprockets 48 and 50 and move the conveyor belts 15a, 15b.
    [0084] The sliding surface 78a and the sliding surface 78b are arranged to be vertically symmetrical with respect to the round bar 60. The guide surface 80a and the guide surface 80b are arranged to be vertically symmetric with respect to the round bar 60. Thus, in the endless conveyor path 14, excluding return path 14F, the coupling members 62 are slidably supported by the guide rail 62 by means of the sliding surfaces 78b and are guided by the guide rail 82 by means of the guide surfaces 80b. On the return path 14F where the conveyor belt is inverted, the coupling members 62 are slidably supported by the guide rail 82 by means of the sliding surfaces 78a and are guided by the guide rail 82 by means of the guide surfaces 80a. Thus, the coupling members 62 are guided by the guide rail 82 over the entire area of the endless conveyor path 14 including the return path 14F.
    [0085] The guide rail 82 is arranged over substantially the entire area of the endless conveyor path 14 except for a certain portion, for example an area where the tension adjustment mechanism 20, which includes the guide sprockets 22 and 22, and a tension roller 24 is arranged. The sliding surfaces 78a, 78b form flat surfaces in the horizontal direction and are in sliding contact with the upper edge surface of the guide rail 82 except for the return path 14F to slide over the guide rail 82. On the return path 14F where the conveyor belt is inverted to be upside down, the sliding surface 78a is in sliding contact with the upper edge surface of the guide rail 82. The side surface of the guide rail 82 is in sliding contact with the guide surfaces 80a and 80b of the guide portions 72e and 72f. Thus, the guide portion 72e and 72f can prevent the spiral conveyor belts 15a through 15d from falling off the guide rail 82. An arrow in figure 7 indicates a direction of movement of the guide rail 82 with respect to the movement of the coupling member 62.
    [0086] As shown in figure 5 and figure 7, the guide rail 82 is made of metal such as stainless steel, and is arranged below the sliding surface 78b of the coupling members 62. The spiral conveyor belt 15a through 15d is supported by the guide rail 86 in such a way as to be movable in the direction of transport. The guide rail 82 is attached to support structures 84 arranged on both sides of the spiral conveyor belt 15a through 15d. Each of the support structures 84 is made of metal such as stainless steel and includes a support plate 84a coupled with screws 86 to the guide rail 82; four arms 84b that are integrally formed with the support plate 84a and extend in a direction orthogonal to the support plate 84a; and a base portion 84c in which the arms 84b are integrally formed and arranged at an equal interval in the vertical direction.
    [0087] Columns 88 remain on both sides of the spiral conveyor belt 15a through 15d while being separated from each other by an appropriate interval. The base portion 84c of the support structure 84 is screwed to the corresponding column 88. An anti-fall plate 90 is coupled to the guide rail 82 together with the support plate 84a with a screw 86. The anti-fall plate 90 is arranged just below the rail guide 82, and is partially arranged in the direction of transport instead of being arranged over the entire area of the guide rail 82, whereby cold air flow between the upper space of the conveyor belt and its outer space is ensured. The anti-fall plate 90 is suspended from an inner side of the guide surface 80a of the coupling member 62 of the conveyor belt arranged on a lower side and prevents food on the conveyor belt from falling to an outside side of the conveyor belt. The anti-fall plate 90 guides the guide portion 72e of the coupling member 62 on the underside from the inside and thus has a function of preventing the conveyor belt on the underside from falling out.
    [0088] The guide rail 82 and the support plate 84a, the base portion 84c and the columns 88, and the support plate 84a and the anti-fall plate 90 are screwed together through the slotted holes. Thus, the relative positions between them can be adjusted slightly in the horizontal direction or in the vertical direction. The upper edge of the guide rail 82 in sliding contact with the sliding surfaces 78a, 78b is covered with a U-shaped cover 92 made of the wear-resistant resin described above.
    [0089] As shown in figure 1, a counting sensor 94 that measures the number of tooth-shaped portions 72d of the coupling members 62 traversing is arranged on a lower side of the inlet path 14A. Figure 11 illustrates a control system for the conveyor device 12. Detection values from the tension detection sensor 28, the tooth count sensors 54 and 56, and the count sensor 94, are introduced for the conveyor device control 30. Control device 30 controls operations of the drive motor 16a of the drive motor 36, voltage adjustment devices 58 and the like based on these detection values.
    [0090] In this configuration, an extremely low temperature atmosphere at -35 ° C or similar for example, is kept in the freezer 10. In the conveyor device 12 the food is arranged on the conveyor belt and is frozen while being transported in the temperature atmosphere extremely low. The round bars 60 are either tightly fitted to the round holes 70a through 70c of one of the adjacent coupling members 62, or loosely fitted to the slotted holes 66a and 66b of each of the adjacent coupling members 62. Thus, the bars the round members are arranged in parallel to form a transport path while having the interval between them restricted with the coupling members 62. On the other hand, the coupling members are coupled together in series in the transport direction by means of the round bars 60 The round bar 60 inserted in the slotted holes 66a and 66b can move in the direction of transport, whereby the gap between the round bars 60 can be adjusted.
    [0091] The detection value from the voltage detection sensor 28 is entered for the control device 30. Thus, the control device 30 controls operations of the drive motor 16a and the voltage adjustment devices 58 in such a way that the tension of the conveyor belt that forms the endless conveyor path 14 is prevented from being at an abnormal value. The detection values from the tooth count sensors 54 and 56 and the count sensor 94 are entered for the control device 30. Thus, the control device 30 monitors a state of movement of the endless conveyor path 14.
    [0092] According to the present embodiment taken as an example, the coupling members 62 include the wear-resistant resin member 72 which incorporates the insert member 64 made of stainless steel. Thus, higher restraining force for round bars 60 and lighter weight can be achieved at the same time. The tooth-shaped portions 72d mesh with the sprockets 48 and 50 and move the conveyor belts 15a through 15d. Sliding surfaces 78a and 78b, guide surfaces 80a and 80b, tooth-shaped portions 72d and sprockets 48 and 50 are all made of wear-resistant resin, so wear and abrasion energy production can be prevented . All things considered, a favorable hygienic environment for the food being transported can be maintained.
    [0093] A single round bar 60 is supported by both end portions of a single coupling member 62, whereby coupling member 62 may have high rigidity to support round bar 60. Portions where the slotted holes 74a, 74b and the holes 76a and 76b into which the round bar 60 is inserted, must have high rigidity. The portions include the insert member 64 and the wear-resistant resin member 72 and thus may have high rigidity. The round bar 60 is tightly attached to the holes 70a through 70c of the insert member 64, whereby the coupling member 62 can be firmly attached to the round bar 60.
    [0094] The sliding surface for the guide rail 82 includes the sliding surfaces 78a and 78b and the guide surfaces 80a and 80b only. Thus, the neighborhood configuration of the guide rail 82 as in Patent Document 3 is not employed. Thus, loosening of the conveyor belt can be easily corrected. The contact pressure and the frictional force between the coupling member 62 and the guide rail 82 do not increase in the low temperature environment. Thus, the drive torque of the conveyor mechanism 32 can be prevented from increasing and abrasion dust can be prevented from being produced on the sliding surface on the guide rail 86. All things considered, the quality of the food on the conveyor belt can be prevented to be adversely affected. When the contact pressure and the frictional force on the sliding surface increase, the striking phenomenon that involves unstable transport speed of the conveyor belt due to the periodic change in contact pressure and frictional force occurs. Thus, the smooth movement of the endless conveyor path 14 is impaired. In the present modality, the contact pressure and the frictional force do not increase on the sliding surface, so that the knocking phenomenon can be prevented as to occur.
    [0095] Coupling member 62 has sliding surfaces 78a and 78b and guide surfaces 80a and 80b on the upper and lower surfaces. Thus, the guide rail 82 can support the endless conveyor path 14 on the return path 14F, whereby the conveyor belt can be prevented from falling off the guide rail 82. Thus, the endless conveyor path 14 can move from side to side. smooth way.
    [0096] Coupling member 62 is provided for each round bar 60, whereby adjacent coupling members 62 are free of restriction. Thus, an intricate curved line shape can be formed in the curved portion of the endless conveyor path 14, and thus higher design freedom of the endless conveyor path 14 can be achieved. In addition, the guide rail 82 can be simple in shape and can be manufactured at low cost.
    [0097] The tension detection sensor 28 constantly monitors the voltage applied to the wireless conveyor path 14, and the control device 30 operates the drive motor 14a of the guide sprocket 16, so that the tension can be adjusted . As described above, the loosening of the endless conveyor path 14 can be adjusted, so that excessively high tension can be prevented from being applied to the endless conveyor path 14. The tooth count sensors 54 and 56 and the count sensor 94 can constantly monitor the state of movement of the endless conveyor path 14, so that abnormality of the conveyor device can be quickly detected.
    [0098] The transport mechanism 32 can apply transport force in a balanced manner on the upward spiral path 14B and the downward spiral path 14D with the plurality of gear wheels 48 and 50 attached to the axes of rotation 40 and 42. Thus, the path endless conveyor 14 can move evenly, so loosening can be prevented from occurring. The transport mechanism 32 only requires a single drive motor 36, so that simple and inexpensive configuration can be achieved.
    [0099] The anti-fall plate 90 can prevent the food on the conveyor belt from falling outside the transport path. The guide portions 72e and 72f supplied to the anti-fall plate 90 and the coupling member 62 can prevent the conveyor belt from falling off the guide rail 82. The guide rail 82 is supported by the columns 88 remaining on both sides of the conveyor belt while being separated from each other by an appropriate interval and the support structure 84. Thus, the guide rail 82 can be fixed by a simple and low-cost support structure, even when the conveyor belt has several stages in the vertical direction.
    [0100] As shown in figure 4, the drive motor 36, the decelerator 38, thrust bearings 44 and 46, spur gears 51 and 52 and tooth count sensors 54 and 56 are arranged in the normal temperature range on the outer side of the ceiling wall 10d and so can be easily maintained and repaired. MODE 2
    [0101] Next, a second embodiment of the present invention will be described with reference to figures 12 to figure 18. The present embodiment represents an example where coupling members are used that have a different configuration from the coupling members 62 in the first embodiment. Coupling members 100 according to the present embodiment each include an insert member 102 made of stainless steel and a wear-resistant resin member 110 that incorporates insert member 102.
    [0102] As shown in figure 17, insert member 102 is formed by folding a stainless steel plate shaped into a strip folded in half with an inner space "s". SP. Insert member 102 includes a top portion 104 of both extreme side portions 112 as different portions of the top portion 104. The top portion 104 includes a flat top portion 106 and parallel wall portions 108 that include two walls parallel to each other other. In the parallel wall portions 108 a pair of slotted holes 110 and 110 are formed in positions that face each other.
    [0103] Both extreme side portions 112 include inclined wall portions 114 that include two inclined walls, inclined in directions to increase the width, parallel wall portions 116 that include two walls that continue until the inclined wall portions 114 are parallel to each other, flat bottom portions 118a, 118b, which continue to parallel wall portions 116 and folded back portions 120a, 120b which continue to bottom portions 118a, 118b and are folded back towards top portion 104. Round holes 122a and 122b and round holes 122c, 122d are formed in the portions parallel walls 116 and backwardly folded portions 120a and 120b. The round holes are arranged in a straight line to be able to accommodate a single round bar 60.
    [0104] As shown in figure 15 and figure 16, the wear-resistant resin member 124 incorporates the insert member 102. The wear-resistant resin member 124 and the wear-resistant resin member 72 according to the first embodiment are made of the same material. The wear-resistant resin member 124 includes a top portion 126 and both extreme side portions 136 as different portions of the top portion 126.
    [0105] The top portion 126 includes a flat top surface 128, angled surfaces 130, and a first parallel section 132 that has parallel outer side surfaces. Slotted holes 134 that are formed through both outer side surfaces and have long sides, extending from the top portion 126 to both extreme side portions 136, are formed in the first parallel section 132. Slotted holes 134 are formed in positions corresponding to the top portions 110 and 110 of the insert member 102.
    [0106] Both extreme side portions 136 include inclined wall portions 138 which include two walls inclined in directions to increase the width, a second parallel section 140 which continues to the inclined wall portions 138 and which are wider than the first section parallel 132, and tooth-shaped portions 142, integrally formed with the second parallel section 140. The inclined wall portions 138 have inner and outer side surfaces that extend to the outer sides. The second parallel section 140 has parallel inner and outer side surfaces. An inner space "s" is formed in the sloping wall portions 138 and in the second parallel section 140. The inner space "s" is wide enough to accommodate the first parallel section 132. The tooth-shaped portions 142 are arranged on the outer side of the conveyor belt that includes the round bars 60.
    [0107] Sliding surfaces 144a, 144b in sliding contact with the guide rail 82 are formed on top and bottom surfaces of the top portion 126. The sliding surfaces 144a, 144b are arranged to be vertically symmetrical with respect to the round bar 60. Guide portions 146a and 146b in the vertical direction are integrally formed with the top portion 126. The guide portions 146a and 146b include guide surfaces 148a, 148b in sliding contact with the side surface of the guide rail 82. The guide surfaces 148a, 148b are arranged to be vertically symmetrical with respect to round bar 60.
    [0108] Round holes 150a, 150b and 150c are formed in positions of the wear-resistant resin member 124 which correspond to the round holes 122a, 122b, 122c of the insert member 102 and have the same diameter as the round holes 122a, 122b, 122c. The round bar 60 is tightly fitted into the round holes 122a through 122d of the insert member 102. The round bar 60, adjacent to the aforementioned round bar 60, is loosely adjusted in the slotted holes 134 and can move in the directions from the sides long from the slotted holes 134. Thus, the two round bars 60 restricted by a single coupling member 100 can be relatively displaced in the direction of transport of the conveyor belt.
    [0109] As shown in figure 18, the round bar 60 is tightly fitted to the four round holes 122a through 122d formed in the insert member 102. Thus, an coupling member 100 is strongly coupled to the round bar 60 in the axial direction. The bottom portions 118a, 118b are in contact with the round bar 60. Thus, the coupling member 100 is strongly coupled to the round bar 60.
    [0110] As shown in figures 12 to figure 14, tooth-shaped portions 142 mesh with sprocket 48 or 50 and move conveyor belts 15a through 15d in the direction of transport. In the endless transport path 14, which excludes return path 14F, the coupling members 100 are slidably supported by the guide rail 82 by means of the sliding surface 144 and are guided by the guide rail 82 by means of the guide surface 148b .
    [0111] On the return path 14F where the conveyor belt reverses, the coupling member 62 is slidably supported by the guide rail 82 through the sliding surface 144a and is guided by the guide rail 82 through the guide surface 148a. Configurations different from that of the coupling members 100 are the same as the counterparts in the first embodiment.
    [0112] According to the present modality taken as an example, the following advantageous effects can be obtained in addition to the advantageous effects obtained by the first modality. Specifically, when the top portion 126 of one of the adjacent coupling members 100 penetrates the interior space "s" of the other of the adjacent coupling members 100, no space in a longitudinal axis direction is formed between the coupling members. Thus, the coupling members restrict one another in the direction of the longitudinal axis of the round bars 60, whereby smooth operation of the coupling members in the transport direction can be ensured. Thus, the transport operation is carried out smoothly with the round bars 60 positioned in the direction of the longitudinal axis. Thus, the transport path can be curved easily for greater design freedom, and the knocking phenomenon, which involves unstable transport speed in positions in the transport direction of the conveyor belt, can be prevented.
    [0113] The insert member 102 is coupled to the coupling members 100 in four positions which include the round holes 122b and 122c formed in the second parallel section 140 and the round holes 122a, and 122d formed in the folded back portions 120a, 120b. Thus, the round bar 60 and the coupling member 10 can be coupled tightly to each other. The bottom portions 118a, 118b are in contact with the round bar 60, whereby the coupling members 100 can be strongly coupled to the round bars 60. THIRD MODE
    [0114] Next, a conveyor device according to a third embodiment of the present invention will be described with reference to figure 19. A conveyor device 12B according to the present embodiment represents an example of a case where a load from the transport mechanism 32 it's big. In the present embodiment, the drive motor 150 is arranged in the center of an upper edge portion of the spiral transport path that includes the upward spiral path 14B and the downward spiral path 14D. The drive motor 150 has a greater capacity than the drive motor 36 according to the first embodiment. Two carcasses 34 are arranged in positions on opposite sides of the spiral spiral transport path, and each carcass 34 incorporates the transport mechanism 32 which has the configuration that is the same as that in the first embodiment.
    [0115] Gearboxes 154a and 154b that drive the axes of rotation 40 and 42 are arranged on the top walls of the housings 34. Drive axles 152a, 152b extend from the drive motor 150 to be connected to the gear boxes 154a, 154b. Other configurations are the same as the counterparts in the first modality.
    [0116] In the present embodiment, the driving force from the driving motor 150 is transmitted to the rotation axes 40 and 42 in the transport mechanisms 32 through the gearboxes 154a and 154b. In the present embodiment, even when the load on the transport mechanism 32 is large, the two transport mechanisms 32 can be driven by a single drive motor 150. The transport force is shared by the two transport mechanisms 32 on both sides of the spiral transport path, so smooth movement of the spiral transport path can be achieved. FOURTH MODALITY
    [0117] Next, a fourth embodiment of the present invention will be described with reference to figure 20. In a conveyor device 12C according to the present embodiment, two spiral transport paths, each including corresponding to one of the upward spiral path 14B and the downward spiral path 14D, are arranged adjacent to the freezer 10. The housing 34 is provided for each of the spiral transport paths. A transport mechanism 32A is arranged on one of the housings 34 and a transport mechanism 32B is arranged on the other of the housings 34. The transport mechanism 32A includes only one axis of rotation 40 to which the plurality of sprockets 48 according to first embodiment shown in figure 4 are linked. The transport mechanism 32B includes only one axis of rotation 42 to which the plurality of gear wheels 50 according to the first embodiment shown in figure 4 are connected.
    [0118] Tooth count sensors that have the configuration that is the same as those of the tooth count sensors 54, 56 according to the first modality shown in figure 4, are provided for the transport mechanisms 32a and 32b and detect rotation amounts of the rotation axes 40 and 42. In addition, a control device similar to the control device 30 shown in figure 11 is provided. The control device has a function of synchronizing the rotation speeds of the rotation axes 40 and 42 to synchronize the movement speeds of the conveyor belt that forms the upward spiral path 14B and the conveyor belt that forms the downward spiral path 14D and receiving values detection from the tooth count sensors provided for the transport mechanisms 32A and 32B. The other configurations are the same as the counterparts in the first modality.
    [0119] According to the present modality, the upward spiral path 14B and the downward spiral path 14D are separated from each other, and thus a spiral transport path that has a simpler configuration and lower cost compared to the third modality , can be achieved. The transport mechanisms 32A and 32B are different from the transport mechanism 32 according to the first embodiment in which only one axis of rotation is provided and each can be configured by a spiral transport path that moves in a single direction. Thus, a simple and low-cost configuration can be achieved. The movement speeds of the conveyor belt forming the upward spiral path 14B and the conveyor belt forming the downward spiral path 14D are synchronized. Thus, the conveyor belt forming the endless conveyor path 14 can be prevented from loosening and can move smoothly. INDUSTRIAL APPLICABILITY
    [0120] With the present invention metal powder can be prevented from being produced and the food quality can be prevented from degrading in processing such as heating, drying and freezing for the food. In addition, a simple, low-cost conveyor device can be implemented, in which contact pressure and friction between the guide rail and the conveyor belt component can be prevented from increasing in a low or high temperature environment.
    权利要求:
    Claims (11)
    [0001]
    1. Conveyor device for conveying food, which processes food while conveying the food with a spiral conveyor belt arranged in a vertical direction in an enclosed space, the conveyor device comprising: a large number of bar members (60) which are arranged in parallel to form the conveyor belt; coupling members (62) which are attached to both ends of each of the bar members and couple the bar members (60) with each other; a guide rail (82) that slidably supports the conveyor belt including the bar members, and a sprocket (48, 50) that engages with tooth-shaped portions (72d) formed in the coupling members, each of which coupling members (62), has a folded shape with an interior space, has both end portions coupled to a first bar member and has a pair of slotted holes (66a) in which a second bar member is adjacent to the first bar member is loosely adjusted, characterized by the fact that each of the coupling members (62) includes a metal insert member (64) and a wear-resistant resin member (72) that incorporates the metal insert member ; the wear-resistant resin members (72) form the tooth-shaped portions (72d) and sliding surfaces that slide on the guide rail (82); a gear portion of the sprocket (48, 50) that meshes with the tooth-shaped portions (72d) is formed of a wear-resistant resin; and the coupling members (62) are configured to slide on the guide rail (82) disposed below the sliding surfaces of the coupling members (62).
    [0002]
    2. Conveyor device for transporting food according to claim 1, characterized in that each metal insert member (64) includes a strip-shaped metal plate that has a folded shape with an inner space, first and second holes in the which the first bar member is tightly adjusted to be respectively formed in both extreme portions of the metal insert member (64), and a pair of slotted holes (66a, 66b) in which the second bar member is adjusted in a manner loose to be formed from both extreme portions towards a top portion of the metal insert member.
    [0003]
    3. Conveyor device for transporting food according to either of claims 1 or 2, characterized in that the tooth-shaped portions (72d) are each formed on one or both of the extreme portions of each coupling member (62) so as to turn externally from the conveyor belt that includes the bar members.
    [0004]
    4. Conveyor device for transporting food according to claim 1, characterized in that each wear-resistant resin member (72) includes a guide portion (72e, 72f) that protrudes towards the guide rail on an outer side of the sliding surface, and each guide portion includes a guide surface (80a, 80b) which is in sliding contact with a lateral surface of the guide rail (82).
    [0005]
    5. Conveyor device for transporting food according to claim 4, characterized in that an upper edge of the guide rail (82) is covered with a cover (92) made of a wear-resistant resin, and the cover (92) made of the wear-resistant resin to be in sliding contact with the sliding surfaces and the guide surfaces.
    [0006]
    6. Conveyor device for transporting food according to either of claims 4 or 5, characterized in that each sliding surface (78a, 78b) includes a pair of sliding surfaces that are arranged to be vertically symmetrical with respect to the bar members , and each guide surface (80a, 80b) includes a pair of guide surfaces that are arranged to be vertically symmetrical with respect to the bar members.
    [0007]
    7. Conveyor device for transporting food according to claim 1, characterized in that each coupling member (62) is shaped in such a way that the width of the coupling member gradually increases from both extreme portions towards the top portion to have a wedge shape, and the top portion of each coupling member (62) be configured to be able to penetrate the interior space of an adjacent coupling member.
    [0008]
    8. Conveyor device for transporting food according to claim 1, characterized in that each coupling member (62) includes: a first parallel section (132) disposed in the top portion, the first parallel section having parallel outer surfaces; and a second parallel section (140) disposed on a portion which includes both end portions and which excludes the top portion, the second parallel section has parallel outer surfaces and a width greater than that of the first parallel section, and the second section parallel (140) have parallel inner surfaces and form the inner space into which the first parallel section is able to penetrate.
    [0009]
    9. Conveyor device for transporting food according to claim 2, characterized in that each metal insert member (102) includes a return portion (120a) disposed on at least one of both extreme portions, the return portion returning from an outer side of at least one of both end portions towards the top portion, and the return portion (120a) includes a third hole in which the first bar member is tightly fitted.
    [0010]
    10. Conveyor device for conveying food according to claim 1, characterized in that the spiral conveyor belt (15a) includes an endless conveyor belt that includes a return path (14F) in which the spiral conveyor belt is inverted at an end end portion of the spiral conveyor belt to return to an initial end portion of the spiral conveyor belt, the guide rail is arranged over an entire length of the endless conveyor belt, and the conveyor device includes: a locking mechanism tension adjustment (20) that is arranged in a path of the endless conveyor belt and adjusts the tension of the endless conveyor belt; and a transport mechanism (32) that includes the sprocket and a drive device for the sprocket.
    [0011]
    11. Conveyor device for conveying food according to claim 10, characterized in that the endless conveyor belt includes: an inlet path (14A) which is arranged in a horizontal direction; an upward spiral path (14B) which has a lower end portion coupled to the entry path and which spirals upwards downstream in a transport direction; a return path (14C) that returns from a more upper portion of the upward spiral path; a downward spiral path (14D) coupled to the return path and arranged so that stages of the upward spiral path and stages of the downward spiral path are alternately arranged, the downward spiral path, downward spiral; an exit path (14E) which is coupled to a lower portion of the downward spiral path which is arranged in the horizontal direction; and the return path (14F) which returns at one end of the outbound path towards a bottom of the outbound path and continues to one end of the inbound path.
    类似技术:
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    同族专利:
    公开号 | 公开日
    BR112015015279A2|2017-07-11|
    WO2014103887A1|2014-07-03|
    US20150353285A1|2015-12-10|
    JP2017014019A|2017-01-19|
    CA2896685C|2017-07-04|
    MX2015008343A|2015-11-09|
    CL2015001654A1|2016-01-20|
    CA2896685A1|2014-07-03|
    JP6177974B2|2017-08-09|
    JPWO2014103887A1|2017-01-12|
    US9540176B2|2017-01-10|
    MX360377B|2018-10-31|
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    法律状态:
    2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-11-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-08-25| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-12-08| B09A| Decision: intention to grant|
    2021-03-02| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/12/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2012-286313|2012-12-27|
    JP2012-286312|2012-12-27|
    JP2012286312|2012-12-27|
    JP2012286313|2012-12-27|
    PCT/JP2013/084129|WO2014103887A1|2012-12-27|2013-12-19|Conveyor device for food transport|
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