Sheet piece collecting device and collecting method

Abstract

The present invention relates to a sheet piece collecting device, comprising a frame, a blanking alignment module and a material receiving and lifting module; the blanking alignment module is connected to the frame, the blanking alignment module comprises a centering mechanism and a base body, and the base body is provided with a blanking port; the material receiving and lifting module comprises an actuator, a front lifting member, a rear lifting member, a front valve plate, a rear valve plate, a first cylinder and a second cylinder, the front lifting member comprises a front lifting member body connected to the frame and a front support portion extending rearward from the lower end of the front lifting member body; the rear lifting member comprises a rear lifting member body connected to the frame and a rear support portion extending forward from the lower end of the rear lifting member body; the first cylinder is used to drive the front valve plate to slide forward and backward relative to the front support portion; the second cylinder is connected between the rear lifting member and the rear valve plate. The present invention also proposes a sheet piece collecting method. The present invention can reduce the requirements of the sheet piece collecting device for the layout site and can improve the scope of application of the sheet piece collecting device.

Description

Technical Field

[0001] The invention relates to a palletizing device, and in particular to a sheet piece collecting device and a collecting method. Background Art

[0002] A Chinese patent application with application number CN201910944521.5 proposes an aluminum sheet stacking device, which can stack aluminum sheets, but the aluminum sheet stacking device has a poor stacking effect on elliptical aluminum sheets.

[0003] The Chinese patent application with application number CN202010897800.3 proposes a blanking structure that can be applied to elliptical sheets. By reasonably setting the blanking structure, the stacking effect of standard elliptical aluminum sheets can be improved, and the neat stacking of standard elliptical aluminum sheets can be guaranteed. Compared with standard elliptical aluminum sheets, the edge lines of some non-standard elliptical aluminum sheets are smoother. It is difficult to straighten the position of the non-standard elliptical aluminum sheets by hitting the edges of the non-standard elliptical aluminum sheets with four light rods. Therefore, the above-mentioned blanking structure that can be applied to elliptical sheets is difficult to achieve neat stacking of non-standard elliptical aluminum sheets.

[0004] A Chinese patent application with application number CN202111436666.8 proposes a blanking alignment structure for a palletizer, which can achieve neat stacking of round, standard oval and non-standard oval aluminum sheets. However, there are the following technical problems: the structure is relatively complex, and it is difficult to operate when adjusting the limit rod and the push rod for sheet pieces of different sizes.

[0005] Furthermore, the sheet-like piece stacking equipment in the prior art generally has the following technical problems:

[0006] A dedicated material receiving device is required. This dedicated material receiving device has high requirements for the layout site and limits the use of sheet piece stacking equipment. For example, an aluminum sheet stacking equipment proposed in Chinese patent application No. CN201910944521.5 uses a dedicated material receiving device.

[0007] A feeding structure is provided between the conveyor belt and the blanking port. A secondary conveyor belt needs to be provided at the feeding structure to drive the sheet pieces to move toward the blanking port. On the one hand, there are problems of complex structure and high cost. On the other hand, it is difficult to adjust the posture of the sheet pieces when they fall into the blanking port, and the applicability to sheet pieces of different shapes or sizes is poor. For example, the above-mentioned feeding structure is adopted in an aluminum sheet stacking equipment proposed in the Chinese patent application with application number CN201910944521.5. Summary of the Invention

[0008] The object of the present invention is to provide a sheet member collecting device and a collecting method to alleviate or eliminate at least one of the above-mentioned technical problems.

[0009] The sheet piece collecting device of the present invention comprises a frame, a blanking alignment module and a material receiving and lifting module;

[0010] The blanking alignment module includes a centering mechanism and a base body fixedly connected to the frame, the base body is provided with a blanking opening for the sheet member to pass downward, and the centering mechanism is used to center the sheet member at the blanking opening;

[0011] The material receiving and lifting module includes an actuator, a front lifting member, a rear lifting member, a front valve plate, a rear valve plate, a first cylinder, and a second cylinder. The front lifting member includes a front lifting member body connected to the frame in a manner that can only slide up and down relative to the frame, and a front support portion extending rearward from the lower end of the front lifting member body. The front valve plate is connected to the front support portion in a manner that can only slide back and forth relative to the front support portion.

[0012] The rear lifter includes a rear lifter body connected to the frame in a manner that it can only slide up and down relative to the frame, and a rear support portion extending forward from the lower end of the rear lifter body, and the rear valve plate is connected to the rear support portion in a manner that it can only slide forward and backward relative to the rear support portion;

[0013] The actuator is configured to drive the front lifting member and the rear lifting member to slide up and down relative to the frame;

[0014] An opening is formed between the rear end of the front support portion and the front end of the rear support portion, and the opening is located at the lower side of the blanking opening;

[0015] The first cylinder is connected between the front lifting member and the front valve plate, and is used to drive the front valve plate to slide forward and backward relative to the front support portion to open or close the front portion of the opening;

[0016] The second cylinder is connected between the rear lifting member and the rear valve plate, and is used to drive the rear valve plate to slide forward and backward relative to the rear supporting portion to open or close the rear portion of the opening.

[0017] Optionally, the actuator includes a drive motor, a worm gear lift and a lifting bracket, the lifting bracket is fixedly connected to the front lifting member, the lifting bracket is fixedly connected to the rear lifting member, the worm gear lift is connected between the lifting bracket and the frame, and the drive motor is used to drive the worm gear lift to drive the front lifting member and the rear lifting member to slide up and down relative to the frame.

[0018] Optionally, a V-shaped opening is provided at the rear end of the front valve plate and the front end of the rear valve plate, and the two V-shaped openings constitute a clamping groove for clamping the receiving tray.

[0019] Optionally, it also includes a feeding module for conveying the sheet pieces output forward by the conveyor belt to the drop port, and the feeding module is arranged to be tilted downward from back to front; the rear end of the feeding module is connected to the frame through a hinge structure extending in the left and right directions by a hinge axis, and the front end of the feeding module and the frame are connected by a lifting mechanism, and the lifting mechanism can adjust and lock the tilt angle of the feeding module.

[0020] Optionally, the feeding module includes a frame and a pulley group for conveying sheet members, the pulley group includes multiple cross bars and multiple pulleys, multiple cross bars are mounted with multiple pulleys, multiple cross bars are arranged in sequence at intervals in the front-to-back direction, multiple cross bars are connected to the frame, and the position of the cross bar located at the frontmost side among the multiple cross bars is adjustable relative to the frame in the front-to-back direction.

[0021] Optionally, it further includes a material receiving module and multiple material receiving trays, the material receiving module is arranged on the lower side of the blanking alignment module, and the material receiving module is provided with a material receiving tray conveying mechanism for conveying the multiple material receiving trays.

[0022] Optionally, the receiving tray includes a tray portion, a connecting shaft portion, a bottom plate portion and a positioning shaft portion fixedly connected in sequence from top to bottom, the outer diameter of the connecting shaft portion and the outer diameter of the positioning shaft portion are both smaller than the outer diameter of the bottom plate portion, the outer diameter of the connecting shaft portion is smaller than the outer diameter of the tray portion, and the outer diameter of the tray portion is smaller than the diameter of the blanking port.

[0023] Optionally, the left side and / or the right side of the frame is provided with a material discharge channel for forklift pallets to enter and exit.

[0024] Optionally, the centering mechanism includes four limiting rods for pre-limiting the sheet member, the central axes of the four limiting rods all extend in the up-down direction, and the four limiting rods are respectively a left front limiting rod arranged at the left front part of the blanking port, a right front limiting rod arranged at the right front part of the blanking port, a left rear limiting rod arranged at the left rear part of the blanking port, and a right rear limiting rod arranged at the right rear part of the blanking port, the left front limiting rod and the right front limiting rod are symmetrical to each other with a virtual plane perpendicular to the left and right directions as a symmetry plane, and the left rear limiting rod and the right rear limiting rod are symmetrical to each other with the virtual plane as a symmetry plane;

[0025] The centering mechanism further includes an alignment assembly, which includes two push rods and a drive assembly, wherein the drive assembly is used to drive the two push rods to reciprocate back and forth, and the two push rods are used to push the sheet member located between the four limit rods forward, and the central axes of the two push rods extend in the up-down direction, and the two push rods are symmetrical with each other with the virtual plane as the symmetry plane;

[0026] The four limiting rods each include a first core rod and a plurality of first rollers mounted on the first core rod, wherein the plurality of first rollers are each used to contact the sheet member and are each capable of rotating relative to the first core rod;

[0027] The two push rods each include a second core rod and a plurality of second rollers mounted on the second core rod, wherein the plurality of second rollers are used to contact the sheet member and are capable of rotating relative to the second core rod;

[0028] The four limit rods all extend upward from the blanking port, and the height of the left front limit rod and the right front limit rod extending upward from the blanking port is greater than the height of the left rear limit rod and the right rear limit rod extending upward from the blanking port.

[0029] The present invention also provides a sheet-like piece collecting method, which uses any of the sheet-like piece collecting devices described above, and includes the following steps:

[0030] In response to a first instruction, the front valve plate and the rear valve plate are controlled to open the openings, and the front lifting member and the rear lifting member are controlled to descend to a first preset position;

[0031] After controlling the front lifting member and the rear lifting member to descend to the first preset position, in response to the second instruction, controlling the front lifting member and the rear lifting member to ascend to the second preset position;

[0032] After controlling the front lifting member and the rear lifting member to rise to the second preset position, in response to a third instruction, controlling the front lifting member and the rear lifting member to descend to the first preset position;

[0033] In response to a fourth instruction, the front valve plate and the rear valve plate are controlled to open the openings, and the front lifting member and the rear lifting member are controlled to descend to a third preset position;

[0034] After the front and rear lifting members are controlled to descend to the third preset position, in response to a fifth instruction, the front and rear valve plates are controlled to close the opening, and then the front and rear lifting members are controlled to ascend to a fourth preset position;

[0035] After the front and rear lifters are controlled to rise to the fourth preset position, in response to the sixth instruction, the front and rear lifters are controlled to fall to the third preset position, and then the front and rear valve plates are controlled to open.

[0036] The present invention adopts a modular design. By reasonably setting the material receiving and lifting module, the requirements of the sheet piece collecting device on the layout site can be reduced, the requirements of the material receiving device can be reduced, and the structure of the blanking alignment module can be simplified; by reasonably setting the feeding module, the posture of the sheet piece falling into the blanking port can be adjusted according to the shape and size of the sheet piece, which is conducive to ensuring the smooth stacking of the sheet piece and the stacking quality of the sheet piece, and can improve the application range of the sheet piece collecting device; by reasonably setting the structure of the blanking alignment module, it can be used for the neat stacking of circular, standard oval and non-standard oval sheet pieces, and it also has the characteristics of simple structure and easy adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is one of the structural schematic diagrams of the sheet-like member collecting device described in the specific embodiment;

[0038] Figure 2 for Figure 1 A front view of the sheet collecting device in FIG.

[0039] Figure 3 for Figure 1 A bottom view of the sheet member collecting device in FIG.

[0040] Figure 4 This is a structural diagram of the material receiving and lifting module described in the specific embodiment;

[0041] Figure 5 It is a structural diagram of the blanking alignment module described in the specific implementation manner;

[0042] Figure 6 It is a bottom view of the blanking alignment module described in the specific embodiment;

[0043] Figure 7 A top view of the blanking alignment module described in the specific embodiment;

[0044] Figure 8 It is a structural diagram of the feeding module described in the specific embodiment;

[0045] Figure 9 for Figure 8 A partial enlarged view of the feeding module described in;

[0046] Figure 10 This is the second structural diagram of the sheet-like member collecting device described in the specific embodiment;

[0047] Figure 11 for Figure 10 An exploded view of the sheet collecting device in FIG.

[0048] Figure 12 This is the third structural diagram of the sheet-like member collecting device described in the specific embodiment;

[0049] Figure 13 This is the fourth structural diagram of the sheet-like member collecting device described in the specific embodiment;

[0050] Figure 14 It is a structural schematic diagram of the material receiving tray described in a specific embodiment.

[0051] Among them, 1-frame; 2-blanking alignment module; 3-material receiving and lifting module; 4-feeding module; 5-conveyor belt; 6-ring receiving module; 7-strip receiving module; 8-forklift; 9-forklift pallet; 10-receiving tray;

[0052] 101- rack body; 102- top plate; 103- bracket unit;

[0053] 201 - Base; 202 - Blanking port; 203 - Left front limit rod; 204 - Right front limit rod; 205 - Left rear limit rod; 206 - Right rear limit rod; 207 - Alignment assembly; 208 - Third cylinder; 209 - Cylinder bracket; 210 - Connector; 211 - Avoidance groove; 212 - Fourth cylinder; 213 - Sliding support bar; 214 - Handwheel; 215 - Fourth lead screw; 216 - Transmission bar; 217 - Third guide rod; 218 - Bar hole; 219 - Sliding member;

[0054] 301 - first lead screw; 302 - lift bracket; 303 - front lift body; 304 - front support; 305 - front valve plate; 306 - first cylinder; 307 - rear lift body; 308 - rear support; 309 - rear valve plate; 310 - second cylinder; 311 - V-shaped port; 312 - first guide rod; 313 - lift body; 314 - drive motor;

[0055] 401 - frame unit; 402 - crossbar; 403 - pulley; 404 - rotating shaft; 405 - second lead screw; 406 - second guide rod; 407 - nut seat; 408 - second strip groove; 409 - baffle; 410 - third lead screw; 411 - first strip groove;

[0056] 1001- bottom plate portion; 1002- connecting shaft portion; 1003- tray portion. DETAILED DESCRIPTION

[0057] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0058] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0059] like Figures 1 to 7The sheet collecting device shown in the figure includes a frame 1, a blanking alignment module 2 and a material receiving and lifting module 3; the blanking alignment module 2 is connected to the frame 1, the blanking alignment module 2 includes a centering mechanism and a base 201 fixedly connected to the frame 1, the base 201 is provided with a blanking port 202 for the sheet to pass downward, the centering mechanism is used to center the sheet at the blanking port 202; the material receiving and lifting module 3 includes an actuator, a front lifting member, a rear lifting member, a front valve plate 30 5. Rear valve plate 309, first cylinder 306 and second cylinder 310. The front lifter includes a front lifter body 303 connected to the frame 1 in a manner that can only slide up and down relative to the frame 1, and a front support portion 304 extending rearward from the lower end of the front lifter body 303. The front valve plate 305 is connected to the front support portion 304 in a manner that can only slide back and forth relative to the front support portion 304. The rear lifter includes a front lifter body 303 connected to the frame 1 in a manner that can only slide up and down relative to the frame 1, and a front support portion 304 extending rearward from the lower end of the front lifter body 303. The rear lifting member body 307 connected to the frame 1 and the rear support part 308 extending forward from the lower end of the rear lifting member body 307, the rear valve plate 309 is connected to the rear support part 308 in a manner that it can only slide back and forth relative to the rear support part 308; the actuator is configured to drive the front lifting member and the rear lifting member to slide up and down relative to the frame 1; an opening is formed between the rear end of the front support part 304 and the front end of the rear support part 308, and the opening is located at the lower side of the blanking port 202; the first cylinder 306 is connected between the front lifting member and the front valve plate 305, and the first cylinder 306 is used to drive the front valve plate 305 to slide back and forth relative to the front support part 304 to open or close the front part of the opening; the second cylinder 310 is connected between the rear lifting member and the rear valve plate 309, and the second cylinder 310 is used to drive the rear valve plate 309 to slide back and forth relative to the rear support part 308 to open or close the rear part of the opening.

[0060] Adopting the above technical solution, by reasonably setting the material receiving lifting module 3, firstly, the front valve plate 305 and the rear valve plate 309 can constitute a valve structure for supporting the sheet member or the material receiving tray 10, and the valve structure can be closed to support the sheet member or the material receiving tray 10 during the stacking process, and the valve structure can be opened after the stacking is completed to allow the sheet member or the material receiving tray 10 to pass downward. The arrangement of the above valve structure is beneficial to ensuring the stacking quality, providing support for the centering of the sheet member, and also helping to simplify the structure of the blanking alignment module 2, which can be combined with the annular material receiving module Block 6 and strip receiving module 7 are used in conjunction with each other; secondly, the front support part 304 and the rear support part 308 can be used to support the forklift pallet 9, and the forklift 8 and the forklift pallet 9 can be directly used to receive and transfer the sheet members, which can reduce the requirements of the sheet member collection device for the layout site; thirdly, during the stacking process, the front lifting part and the rear lifting part can be lowered as the number of sheet members increases, so that the falling and centering process of the sheet members at the drop port 202 remain consistent, which is conducive to ensuring the neatness and consistency of the sheet member stacking.

[0061] In some embodiments, the actuator assembly includes a drive motor 314, a worm gear screw elevator, and a lifting bracket 302. The lifting bracket 302 is fixedly connected to the front lifting member, and the lifting bracket 302 is fixedly connected to the rear lifting member. The worm gear screw elevator is connected between the lifting bracket 302 and the frame 1. The drive motor 314 is used to drive the worm gear screw elevator to drive the front lifting member and the rear lifting member to slide up and down relative to the frame 1. Adopting the above technical solution, the use of a worm gear screw elevator can drive heavier forklift pallets 9 and sheet stacks to be raised and lowered, providing a guarantee for the normal operation of the material receiving and lifting module 3.

[0062] As a specific example, the frame 1 includes a frame body 101 and a top plate 102 fixedly connected to the top of the frame body 101, the drive motor 314 and the elevator body 313 of the worm gear elevator are both fixedly connected to the top plate 102, the lifting nut of the worm gear elevator is fixedly connected to the lifting bracket 302, the first screw 301 of the worm gear elevator cooperates with the lifting nut, the drive motor 314 drives the worm gear elevator to operate, and the first screw 301 rotates to drive the lifting nut to rise and fall.

[0063] In some embodiments, the front lifting member and the rear lifting member are each connected to the frame 1 through two first guide rods 312, and the upper and lower ends of the first guide rods 312 are respectively fixedly connected to the frame 1. The front lifting member and the rear lifting member are respectively provided with two first guide holes respectively cooperating with the two first guide rods 312, and the four first guide holes are respectively cooperating with the four first guide rods 312, which can limit the front lifting member and the rear lifting member to only be able to slide up and down relative to the frame 1.

[0064] In some embodiments, the rear end of the front valve plate 305 and the front end of the rear valve plate 309 are both provided with a V-shaped opening 311, and the two V-shaped openings 311 constitute a clamping groove for clamping the receiving tray 10. Using the above technical solution, the clamping groove is used to clamp the positioning shaft portion of the receiving tray 10 to ensure the positioning accuracy of the receiving tray 10.

[0065] In some embodiments, the front support portion 304 is provided with a first sliding groove extending in the front-to-back direction, and the front valve plate 305 cooperates with the first sliding groove on the front support portion 304. The first sliding groove limits the front valve plate 305 to be able to slide forward and backward only relative to the front support portion 304. The rear support portion 308 is provided with a second sliding groove extending in the front-to-back direction, and the rear valve plate 309 cooperates with the second sliding groove on the rear support portion 308. The second sliding groove limits the rear valve plate 309 to be able to slide forward and backward only relative to the rear support portion 308.

[0066] In some embodiments, the sheet piece collecting device further includes a feeding module 4 for conveying the sheet pieces output forward by the conveyor belt 5 to the drop port 202, wherein the feeding module 4 is tilted downward from the back to the front; the rear end of the feeding module 4 is connected to the frame 1 via a hinge structure extending in the left-right direction along a hinge axis, and the front end of the feeding module 4 is connected to the frame 1 via a lifting mechanism, which is capable of adjusting and locking the tilt angle of the feeding module 4. By adopting the above technical solution, the speed and posture of the sheet pieces falling into the drop port 202 can be adjusted by adjusting the tilt angle of the feeding module 4, which is conducive to improving the stacking quality of the sheet pieces, making the sheet piece collecting device more suitable for sheet pieces of more sizes and shapes, and helping to improve the scope of application of the sheet piece collecting device.

[0067] In some embodiments, as Figure 8 and Figure 9As shown, the feeding module 4 includes a frame and a pulley assembly for conveying sheet-like parts, the pulley assembly includes multiple cross bars 402 and multiple pulleys 403, multiple cross bars 402 are each mounted with multiple pulleys 403, multiple cross bars 402 are sequentially spaced in the front-to-back direction, multiple cross bars 402 are connected to the frame, and the position of the cross bar 402 located at the frontmost side relative to the frame in the front-to-back direction is adjustable. By adopting the above technical solution, the tilted feeding module 4 and the pulley assembly are used in conjunction, and the gravity of the sheet-like parts can be used to provide the power for sliding forward and downward, which can simplify the structure and eliminate the auxiliary conveyor belt in the prior art. The position of the frontmost cross bar 402 relative to the frame in the front-to-back direction is adjustable, and the position of the frontmost cross bar 402 can be adjusted according to the size and shape of the sheet pieces, thereby adjusting the speed and posture of the sheet pieces falling into the drop port 202, which is beneficial to improving the stacking quality of the sheet pieces, so that the sheet piece collecting device can be better adapted to sheet pieces of more sizes and shapes, and is beneficial to improving the scope of application of the sheet piece collecting device.

[0068] As a specific example, Figure 8 and Figure 9 As shown, the frame includes two frame units 401 that are spaced apart and arranged side by side in the left-right direction, and the two ends of multiple cross bars 402 are respectively connected to the two frame units 401. A first strip groove 411 with a length extending in the front-to-back direction is provided at the front end portion of the two frame units 401, and a plurality of recessed portions are provided on the lower groove wall of the first strip groove 411. The plurality of recessed portions are arranged in sequence at intervals in the front-to-back direction, and the position of the cross bar 402 in the front-to-back direction is adjusted by cooperating with different recessed portions at the end portion of the cross bar 402.

[0069] As a specific example, the hinge structure includes a rotating shaft 404 fixedly connected to the frame body and a hinge base fixedly connected to the bracket unit 103 of the frame 1, and the rotating shaft 404 is hinged to the hinge base.

[0070] As a specific example, Figure 8 and Figure 9 As shown, the lifting mechanism includes a second lead screw 405, a nut seat 407, a second guide rod 406 and a guide seat. Second strip grooves 408 extending in the front-to-back direction are provided on both sides of the frame. The nut seat 407 is connected to one second strip groove 408 in a manner that can rotate and slide relatively forward and backward. The guide seat is connected to another second strip groove 408 in a manner that can rotate and slide relatively forward and backward. The second lead screw 405 is rotatably supported and connected to the frame 1, and the second guide rod 406 is fixedly connected to the frame 1. Rotating the second lead screw 405 can drive the frame to rotate around the hinge axis of the hinge structure, thereby adjusting the inclination angle of the feeding module 4.

[0071] As a specific example, Figure 8 and Figure 9 As shown, the feeding module 4 is also provided with a guide groove for limiting the path for the sheet member to slide forward, and the guide groove is composed of two baffles 409 spaced apart in the left and right directions. The feeding module 4 also includes a third screw 410 whose central axis extends along the left and right directions. The third screw 410 is provided with two sections of threads with opposite rotation directions, and the two sections of threads are respectively threadedly connected to the two baffles 409. The width of the guide groove can be adjusted by rotating the third screw 410.

[0072] In some embodiments, the sheet piece collecting device further includes a receiving module and a plurality of receiving trays 10 , wherein the receiving module is arranged on the lower side of the blanking alignment module 2 , and a receiving tray conveying mechanism for conveying the plurality of receiving trays 10 is provided on the receiving module.

[0073] As a specific example, Figure 10 and Figure 11 As shown, the material receiving module is an annular material receiving module 6. The structure of the annular material receiving module 6 can refer to the material receiving device in an aluminum sheet stacking device proposed in Chinese patent application No. CN201910944521.5. In a specific implementation, a conveyor belt 5 for conveying the sheet pieces to the sheet piece collecting device is further provided on the rear side of the sheet piece collecting device.

[0074] As a specific example, Figure 12 As shown, the material receiving module is a strip material receiving module 7, and the material receiving tray 10 conveying mechanism on the strip material receiving module 7 can adopt a chain conveying mechanism.

[0075] In some embodiments, as Figure 14 As shown, the receiving tray 10 includes a tray portion 1003, a connecting shaft portion 1002, a bottom plate portion 1001, and a positioning shaft portion, which are fixedly connected in sequence from top to bottom. The outer diameters of the connecting shaft portion 1002 and the positioning shaft portion are both smaller than the outer diameter of the bottom plate portion 1001. The outer diameter of the connecting shaft portion 1002 is smaller than the outer diameter of the tray portion 1003. The outer diameter of the tray portion 1003 is smaller than the diameter of the blanking opening 202. By adopting the above technical solution, the positioning shaft portion can improve the positioning accuracy of the receiving tray 10; by arranging the bottom plate portion 1001 to support the valve structure and arranging the connecting shaft portion 1002 to enable the tray portion 1003 to extend into the centering mechanism, it is convenient to use the valve structure to support the receiving tray 10 for receiving materials, and it is convenient for the front lifting member and the rear lifting member to descend as the number of sheet materials increases. The use of the receiving tray 10 and the material lifting module in combination is conducive to simplifying the structure of the blanking alignment module 2.

[0076] In some embodiments, as Figure 13As shown, the left and / or right sides of the frame 1 are provided with unloading channels for forklift pallets 9 to enter and exit. The above technical solution enables the use of a forklift 8 in conjunction with the forklift pallet 9 for receiving and unloading materials, reducing the requirements for layout space. By properly configuring the material receiving and lifting module 3, it can be used in conjunction with the ring receiving module 6, the strip receiving module 7, and the forklift pallet 9, reducing the layout space requirements of the sheet member collection device and the requirements for the material receiving device.

[0077] In some embodiments, as Figure 5-7 As shown, the centering mechanism includes four limit rods for pre-limiting the sheet members, and the central axes of the four limit rods extend in the up and down directions. The four limit rods are respectively a left front limit rod 203 arranged at the left front part of the blanking port 202, a right front limit rod 204 arranged at the right front part of the blanking port 202, a left rear limit rod 205 arranged at the left rear part of the blanking port 202, and a right rear limit rod 206 arranged at the right rear part of the blanking port 202. The left front limit rod 203 and the right front limit rod 204 are symmetrical to each other with a virtual plane perpendicular to the left and right directions as the symmetry plane, and the left rear limit rod 205 and the right rear limit rod 206 are symmetrical to each other with the virtual plane as the symmetry plane; the centering mechanism also includes an alignment component 207, and the alignment component 207 includes two pushing rods and a driving component, and the driving component is used to drive the two pushing rods to reciprocate back and forth, and the two pushing rods are used to Push the sheet member located between the four limit rods forward, the central axes of the two push rods extend in the up and down directions, and the two push rods are symmetrical with each other with the virtual plane as the symmetry plane; the four limit rods each include a first core rod and a plurality of first rollers mounted on the first core rod, and the plurality of first rollers are used to contact the sheet member and the plurality of first rollers are capable of rotating relative to the first core rod; the two push rods each include a second core rod and a plurality of second rollers mounted on the second core rod, and the plurality of second rollers are used to contact the sheet member and the plurality of second rollers are capable of rotating relative to the second core rod; the four limit rods each extend upward from the blanking port 202, and the height of the left front limit rod 203 and the right front limit rod 204 extending upward from the blanking port 202 is greater than the height of the left rear limit rod 205 and the right rear limit rod 206 extending upward from the blanking port 202. In a specific implementation, the distance between the left rear limiting rod 205 and the right rear limiting rod 206 is greater than the distance between the two push rods. The space between the left rear limiting rod 205 and the right rear limiting rod 206 provides space for the two push rods to move forward and backward.

[0078] In some embodiments, viewed from above, four limiting rods are located at the four corners of a square. Each limiting rod is connected to a linear reciprocating motion mechanism capable of limiting the limiting rod to linear reciprocating motion. The linear reciprocating motion direction of the two limiting rods located at both ends of a diagonal of the square extends along the diagonal, and the linear reciprocating motion direction of the other two limiting rods extends along the other diagonal of the square. In specific implementation, each reciprocating motion mechanism includes a slide fixedly connected to the base 201 and a sliding member 219 that slidably cooperates with the slide. The lower end of the limiting rod corresponding to the reciprocating motion mechanism is fixedly connected to the end of the sliding member 219 near the blanking port 202.

[0079] In some embodiments, in order to ensure the synchronous movement of the four limit rods, the centering mechanism also includes a limit rod synchronous adjustment mechanism, which includes a handwheel 214, a fourth lead screw 215 whose central axis extends in the front-to-back direction, two third guide rods 217 whose central axes extend in the front-to-back direction, and two transmission bars 216 whose lengths extend in the left-to-right direction. The fourth lead screw 215 is rotatably mounted on the lower side of the base body 201, and the two third guide rods 217 are fixedly connected to the lower side of the base body 201. The two ends of the two transmission bars 216 are respectively connected to the two third guide rods 217, and the handwheel 214 is connected to the front end of the fourth lead screw 215. Two sections of driving threads are provided on the fourth lead screw 215. The two driving thread segments are respectively threadedly connected to the two transmission bars 216. The rotation directions of the two driving thread segments are opposite. The left and right parts of the two transmission bars 216 are each provided with a bar hole 218 extending in the left-right direction. Each bar hole 218 passes through the corresponding transmission bar 216 in the up-down direction. The four sliding members 219 are connected to a pin shaft with a central axis extending in the up-down direction at one end away from the blanking port 202. The four pin shafts are respectively slidably matched with the four bar holes 218. The fourth lead screw 215 is driven to rotate by the hand wheel 214, thereby driving the two transmission bars 216 to move back and forth, thereby driving the four sliding members 219 to slide, thereby realizing the synchronous adjustment of the positions of the four limit rods, thereby adapting to sheet pieces of different sizes. The above-mentioned limit rod synchronous adjustment mechanism has the characteristics of simple structure and easy adjustment, and the fourth lead screw 215 can also be self-locking.

[0080] In some embodiments, a valve assembly is provided at the material dropout 202 to support the sheet member between the four limiting rods. When the valve assembly is closed, it supports the sheet member; when the valve assembly is open, the sheet member can pass downward through the material dropout 202. Specifically, the valve assembly includes multiple valve units staggered relative to the four limiting rods. Each valve unit includes a sliding seat fixed to the seat body 201, a sliding support bar 213 that slidably engages with the sliding seat, and a fourth cylinder 212 for driving the sliding support bar 213. When the sliding support bars 213 extend into the material dropout 202, the valve assembly closes, supporting the sheet member on the sliding support bars 213. When the sliding support bars 213 move away from the material dropout 202, the valve assembly opens, allowing the sheet member to pass downward through the material dropout 202. The valve assembly strengthens the support and opening of the door for the sheet member. In specific implementations, due to the provision of the material receiving and lifting module 3, the aforementioned valve assembly can be eliminated as needed, simplifying the structure of the material dropout alignment module 2.

[0081] In some embodiments, the drive assembly of the alignment assembly 207 includes a cylinder bracket 209, a third cylinder 208, and a Y-shaped connecting bracket. The connecting bracket includes a bracket body and a V-shaped bracket with an opening facing forward. The rear portion of the bracket body is fixedly connected to the piston rod of the third cylinder 208. The rear portion of the V-shaped bracket is fixedly connected to the bracket body. Two push rods are respectively connected to the two front ends of the V-shaped bracket. The cylinder bracket 209 is fixedly connected to the upper side of the base 201. The third cylinder 208 is connected to the cylinder bracket 209 in a manner that can only slide back and forth. The third cylinder 208 is connected to a transmission bar 216 via a connecting piece 210. The base 201 is provided with an avoidance groove 211 for the connecting piece 210 to pass through. When the hand wheel 214 is turned, the position of the third cylinder 208 in the front-to-back direction can be adjusted synchronously, which helps to reduce the difficulty of adjustment.

[0082] In some embodiments, the V-shaped bracket includes a mounting post fixedly connected to the bracket body in the middle, a right upper arm whose rear end is connected to the upper end of the mounting post, a left upper arm whose rear end is connected to the upper end of the mounting post, a right lower arm whose rear end is connected to the lower end of the mounting post, and a left lower arm whose rear end is connected to the lower end of the mounting post. The two push rods are respectively a left push rod located to the left of the aforementioned virtual plane and a right push rod located to the right of the aforementioned virtual plane. The upper end of the left push rod is connected to the front end of the left upper arm, the lower end of the left push rod is connected to the front end of the left lower arm, the upper end of the right push rod is connected to the front end of the right upper arm, and the lower end of the right push rod is connected to the front end of the right lower arm. Using the upper structure, the left and right push rods can be installed more stably.

[0083] In some embodiments, in order to facilitate the adjustment of the distance between the left push rod and the right push rod to accommodate sheet parts of different sizes, the left upper arm, the right upper arm, the left lower arm and the right lower arm are all connected to the mounting column by a hinged manner, and the four hinge axes are all coaxially arranged with the mounting column. An upper angle adjustment structure for adjusting and locking the angle is provided between the left upper arm and the right upper arm, and a lower angle adjustment structure for adjusting and locking the angle is provided between the left lower arm and the right lower arm.

[0084] In some embodiments, the upper angle adjustment structure includes an upper connecting plate, an upper right stud and an upper left stud. The lower end of the upper right stud is fixedly connected to the right upper arm, and the lower end of the upper left stud is fixedly connected to the left upper arm. An upper arc-shaped waist hole is provided on the upper connecting plate. Both the upper right stud and the upper left stud are slidably fitted with the upper arc-shaped waist hole. Both the upper right stud and the upper left stud are connected with an upper locking nut by threaded fitting. The left upper arm, the right upper arm and the upper connecting plate are fixedly connected together by tightening the upper locking nut. After loosening the upper locking nut, the angle between the left upper arm and the right upper arm can be adjusted. The upper arc-shaped waist hole is arranged around the hinge axis of the left upper arm and the right upper arm. The lower angle adjustment structure includes a lower connecting plate, a right lower stud and a left lower stud. The upper end of the right lower stud is fixedly connected to the right lower arm, and the upper end of the left lower stud is fixedly connected to the left lower arm. The lower connecting plate is provided with a lower arc-shaped waist hole. The right lower stud and the left lower stud are both slidably fitted with the lower arc-shaped waist hole. The right lower stud and the left lower stud are both connected with a lower locking nut by threaded fitting. The left lower arm, the right lower arm and the lower connecting plate are fixed together by tightening the lower locking nut. After loosening the lower locking nut, the angle between the left lower arm and the right lower arm can be adjusted. The lower arc-shaped waist hole is arranged around the hinge axis of the left lower arm and the right lower arm.

[0085] In some embodiments, the plurality of first rollers and the plurality of second rollers are bearings. In a specific implementation, to ensure that the bearings can better contact the edge of the sheet, the plurality of bearings on each first core rod are stacked together in sequence along the axial direction, and the plurality of bearings on each second core rod are stacked together in sequence along the axial direction.

[0086] The working principle of the above-mentioned alignment component 207 is as follows: the four limit rods can move in a straight line along the diagonal line, and the alignment component 207 can move in the front-to-back direction. The positions of the four limit rods and the initial positions of the two push rods in the front-to-back direction can be adjusted according to the size of the sheet member. At the same time, the spacing between the two push rods in the left-to-right direction can also be adjusted according to the size of the sheet member; after the inclined sheet member leaves the conveyor belt 5, it relies on inertia to hit the left front limit rod 203 and the right front limit rod 204, and one side of the sheet member first hits the left front limit rod 203 or The right front limiting rod 204 is supported by a bearing and rotates, which can initially correct the position of the sheet. Due to gravity, the sheet will automatically fall onto the receiving tray 10. During this process, the left rear limiting rod 205 and the right rear limiting rod 206 are provided to prevent the sheet from hitting and rebounding too far. After the sheet is supported on the receiving tray 10, the two push rods will slap the edge of the sheet forward to further correct the position of the sheet. During this process, the sheet contacts the bearing on the push rod, and the sheet can rotate, thereby correcting the position of the sheet more quickly. By providing the bearing in contact with the sheet, the position of the sheet can be corrected more quickly. Since both the bearing and the sheet can rotate, using the bearing to slap the edge of the sheet can reduce damage to the edge of the sheet, reduce the phenomenon of sheet jamming, and also enable the present invention to be used to neatly stack non-standard oval sheet pieces.

[0087] The provision of the left and right push rods allows the spacing between the four limiting rods to be slightly larger than the size of the sheet, allowing the sheet to fall more smoothly into the area between the four limiting rods, thereby improving the practicality of the sheet collection device. The method of initially limiting the position using the four limiting rods and then positioning the sheet using the left and right push rods is suitable for both round sheet pieces and standard oval and non-standard oval sheet pieces, such as round aluminum sheets and oval aluminum sheets.

[0088] In some embodiments, the present invention further provides a sheet-like piece collecting method, which uses any of the sheet-like piece collecting devices described above, comprising the following steps:

[0089] S101: In response to a first instruction, the front valve plate 305 and the rear valve plate 309 are controlled to open, and the front lifting member and the rear lifting member are controlled to descend to a first preset position;

[0090] S102: After controlling the front lifting member and the rear lifting member to descend to the first preset position, in response to a second instruction, controlling the front lifting member and the rear lifting member to ascend to a second preset position;

[0091] S103: After the front lifting member and the rear lifting member are controlled to rise to the second preset position, in response to a third instruction, the front lifting member and the rear lifting member are controlled to descend to the first preset position;

[0092] S201: In response to the fourth instruction, the front valve plate 305 and the rear valve plate 309 are controlled to open, and the front lifting member and the rear lifting member are controlled to descend to a third preset position;

[0093] S202: After the front and rear lifting members are controlled to descend to the third preset position, in response to the fifth instruction, the front valve plate 305 and the rear valve plate 309 are controlled to close the opening, and then the front and rear lifting members are controlled to ascend to the fourth preset position;

[0094] S203: After the front and rear lifting members are controlled to rise to the fourth preset position, in response to the sixth instruction, the front and rear lifting members are controlled to descend to the third preset position, and then the front valve plate 305 and the rear valve plate 309 are controlled to open.

[0095] The above-mentioned S101, S102 and S103 are applicable to the scheme of receiving and unloading materials using a forklift 8 and a forklift pallet 9; the above-mentioned S201, S202 and S203 are applicable to the scheme of receiving and unloading materials using a strip receiving module 7 and an annular receiving module 6.

[0096] In some embodiments, the sheet piece collection method further includes the following steps: after controlling the front lifting member and the rear lifting member to rise to the fourth preset position, it also includes the following steps: in response to the seventh instruction, controlling the front lifting member and the rear lifting member to descend a preset distance, and the preset distance is consistent with the thickness of the sheet piece.

[0097] In a specific implementation, the above-described sheet member collection method can be executed by a control system. The control system includes a control device and multiple sensors. The multiple sensors include multiple first position sensors for monitoring the positions of the front and rear lifters, a second position sensor for detecting whether a forklift tray is in place, and a counting sensor for monitoring the number of stacked sheet members. The multiple sensors are connected to the control device. The control device receives signals from the multiple sensors and determines the positions of the front and rear lifters, whether the forklift tray is in place, and the number of stacked sheet members based on the signals from the multiple sensors. The control device includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described sheet member collection method.

[0098] Based on the above control system, the sheet collecting method includes the following steps:

[0099] S101: In response to a first instruction, the control device controls the front valve plate 305 and the rear valve plate 309 to open, and controls the front and rear lifting members to descend to a first preset position. The first instruction may be a control instruction input by an operator using a voice device or a key, causing the control system to switch to a mode in which the forklift 8 and the forklift pallet 9 receive and unload materials. The control device may determine whether the front and rear lifting members are descended to the first preset position based on signals collected by the plurality of first position sensors.

[0100] S102: After the front and rear lifting members are controlled to descend to the first preset position, the front and rear lifting members are controlled to ascend to the second preset position in response to the second instruction. In a specific implementation, when the control device receives a signal that the second position sensor is triggered, it can be determined that the forklift pallet is in place, and the control device generates a second instruction to control the front and rear lifting members to ascend to the second preset position. The control device can determine whether the front and rear lifting members are controlled to ascend to the first preset position based on the signals collected by the multiple first position sensors.

[0101] S103: After the front and rear lifting members are controlled to rise to the second preset position, the front and rear lifting members are controlled to descend to the first preset position in response to a third instruction; when the control device determines, based on the signal from the counting sensor, that the number of sheet members meets the preset number, the control device generates a third instruction to control the front and rear lifting members to descend to the first preset position, so that a forklift can be used to insert and unload the sheet members from the forklift pallet;

[0102] S201: In response to the fourth instruction, the front valve plate 305 and the rear valve plate 309 are controlled to open, and the front and rear lifting members are controlled to descend to the third preset position. The fourth instruction may be a control instruction input by the operator using a voice device or a key, so that the control system switches to the strip receiving module 7 and the ring receiving module 6 for receiving and unloading materials. The control device may determine whether to control the front and rear lifting members to descend to the third preset position based on the signals collected by the multiple first position sensors.

[0103] S202: After the front lifting member and the rear lifting member are controlled to descend to the third preset position, in response to the fifth instruction, the front valve plate 305 and the rear valve plate 309 are controlled to close the opening, and then the front lifting member and the rear lifting member are controlled to rise to the fourth preset position; the control device can determine whether the receiving tray is in place based on the signal of the third position sensor used to detect whether the receiving tray is in place. When the control device determines that the receiving tray is in place, the control device generates a fifth instruction to control the front valve plate 305 and the rear valve plate 309 to close the opening to clamp and support the supporting tray, and then control the front lifting member and the rear lifting member to rise to the fourth preset position so that the supporting tray reaches the preset material receiving position. The control device can determine whether to control the front lifting member and the rear lifting member to rise to the fourth preset position based on the signals collected by multiple first position sensors;

[0104] S203: After the front and rear lifting members are controlled to rise to the fourth preset position, in response to the sixth instruction, the front and rear lifting members are controlled to descend to the third preset position, and then the front valve plate 305 and the rear valve plate 309 are controlled to open the opening; when the control device determines that the number of sheet members meets the preset number according to the signal of the counting sensor, the control device generates a sixth instruction, controls the front and rear lifting members to descend to the third preset position, controls the front valve plate 305 and the rear valve plate 309 to open the opening, so that the supporting tray falls onto the strip receiving module 7 or the ring receiving module 6, and the strip receiving module 7 or the ring receiving module 6 is used to unload the material;

[0105] After the front lifting member and the rear lifting member are controlled to rise to the fourth preset position, the following steps are also included: in response to the seventh instruction, the front lifting member and the rear lifting member are controlled to descend a preset distance, and the preset distance is consistent with the thickness of the sheet member; the control device generates the seventh instruction according to the signal triggered by the counting sensor, and controls the front lifting member and the rear lifting member to descend a preset distance, so that the material tray and the sheet member on the material tray are both descended by the preset distance, so that the falling distance of the sheet member is consistent, which is conducive to ensuring the consistency of the stacking of the sheet members.

[0106] The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the scope of protection of the present invention. In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. mean that the specific features, structures, materials or characteristics of the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

Claims

1. A sheet collecting device, characterized in that: It includes a frame, a blanking alignment module and a material receiving and lifting module; The blanking alignment module includes a centering mechanism and a base body fixedly connected to the frame, the base body is provided with a blanking opening for the sheet member to pass downward, and the centering mechanism is used to center the sheet member at the blanking opening; The material receiving and lifting module includes an actuator, a front lifting member, a rear lifting member, a front valve plate, a rear valve plate, a first cylinder, and a second cylinder. The front lifting member includes a front lifting member body connected to the frame in a manner that can only slide up and down relative to the frame, and a front support portion extending rearward from the lower end of the front lifting member body. The front valve plate is connected to the front support portion in a manner that can only slide back and forth relative to the front support portion. The rear lifter includes a rear lifter body connected to the frame in a manner that it can only slide up and down relative to the frame, and a rear support portion extending forward from the lower end of the rear lifter body, and the rear valve plate is connected to the rear support portion in a manner that it can only slide forward and backward relative to the rear support portion; The actuator is configured to drive the front lifting member and the rear lifting member to slide up and down relative to the frame; An opening is formed between the rear end of the front support portion and the front end of the rear support portion, and the opening is located at the lower side of the blanking opening; The first cylinder is connected between the front lifting member and the front valve plate, and is used to drive the front valve plate to slide forward and backward relative to the front support portion to open or close the front portion of the opening; The second cylinder is connected between the rear lifting member and the rear valve plate, and the second cylinder is used to drive the rear valve plate to slide forward and backward relative to the rear support portion to open or close the rear portion of the opening; It also includes a material receiving module and a plurality of material receiving trays, wherein the material receiving module is arranged at the lower side of the blanking alignment module, and the material receiving module is provided with a material receiving tray conveying mechanism for conveying the plurality of the material receiving trays; The receiving tray includes a tray portion, a connecting shaft portion, a bottom plate portion, and a positioning shaft portion that are fixedly connected in sequence from top to bottom. The outer diameters of the connecting shaft portion and the positioning shaft portion are both smaller than the outer diameter of the bottom plate portion. The outer diameter of the connecting shaft portion is smaller than the outer diameter of the tray portion, and the outer diameter of the tray portion is smaller than the diameter of the blanking port. The centering mechanism includes four limiting rods for pre-limiting the sheet member, the central axes of the four limiting rods all extending in the up-down direction, and the four limiting rods are respectively a left front limiting rod arranged at the left front part of the blanking port, a right front limiting rod arranged at the right front part of the blanking port, a left rear limiting rod arranged at the left rear part of the blanking port, and a right rear limiting rod arranged at the right rear part of the blanking port, the left front limiting rod and the right front limiting rod are symmetrical to each other with a virtual plane perpendicular to the left and right directions as a symmetry plane, and the left rear limiting rod and the right rear limiting rod are symmetrical to each other with the virtual plane as a symmetry plane; The centering mechanism further includes an alignment assembly, which includes two push rods and a drive assembly, wherein the drive assembly is used to drive the two push rods to reciprocate back and forth, and the two push rods are used to push the sheet member located between the four limit rods forward, and the central axes of the two push rods extend in the up-down direction, and the two push rods are symmetrical with each other with the virtual plane as the symmetry plane; The four limiting rods each include a first core rod and a plurality of first rollers mounted on the first core rod, wherein the plurality of first rollers are each used to contact the sheet member and are each capable of rotating relative to the first core rod; The two push rods each include a second core rod and a plurality of second rollers mounted on the second core rod, wherein the plurality of second rollers are used to contact the sheet member and are capable of rotating relative to the second core rod; The four limiting rods all extend upward from the blanking opening, and the height of the left front limiting rod and the right front limiting rod extending upward from the blanking opening is greater than the height of the left rear limiting rod and the right rear limiting rod extending upward from the blanking opening; The front valve plate and the rear valve plate constitute a valve structure supporting the sheet member or the receiving tray. The rear end of the front valve plate and the front end of the rear valve plate are both provided with a V-shaped opening, and the two V-shaped openings constitute a clamping groove for clamping the receiving tray. When the bottom plate portion is supported on the valve structure, the tray portion can be extended into the centering mechanism by providing the connecting shaft portion.

2. The sheet collecting device according to claim 1, characterized in that: The actuator includes a drive motor, a worm gear lift and a lifting bracket, the lifting bracket is fixedly connected to the front lifting member, the lifting bracket is fixedly connected to the rear lifting member, the worm gear lift is connected between the lifting bracket and the frame, and the drive motor is used to drive the worm gear lift to drive the front lifting member and the rear lifting member to slide up and down relative to the frame.

3. The sheet member collecting device according to claim 1, characterized in that: It also includes a feeding module for conveying the sheet pieces output forward by the conveyor belt to the drop port, and the feeding module is arranged to be tilted downward from back to front; the rear end of the feeding module is connected to the frame by a hinge structure extending in the left and right directions by a hinge axis, and the front end of the feeding module is connected to the frame by a lifting mechanism, and the lifting mechanism can adjust and lock the tilt angle of the feeding module.

4. The sheet member collecting device according to claim 3, characterized in that: The feeding module includes a frame and a pulley group for conveying sheet members, the pulley group includes multiple cross bars and multiple pulleys, multiple cross bars are mounted with multiple pulleys, multiple cross bars are arranged in sequence at intervals in the front-to-back direction, multiple cross bars are connected to the frame, and the position of the cross bar located at the frontmost side among the multiple cross bars is adjustable relative to the frame in the front-to-back direction.

5. The sheet member collecting device according to claim 1, characterized in that: The left side and / or the right side of the frame is provided with a material discharge channel for forklift pallets to enter and exit.

6. A sheet-like piece collecting method, characterized in that: The sheet-like piece collecting device according to any one of claims 1 to 5 comprises the following steps: In response to a first instruction, the front valve plate and the rear valve plate are controlled to open the openings, and the front lifting member and the rear lifting member are controlled to descend to a first preset position; After controlling the front lifting member and the rear lifting member to descend to the first preset position, in response to the second instruction, controlling the front lifting member and the rear lifting member to ascend to the second preset position; After controlling the front lifting member and the rear lifting member to rise to the second preset position, in response to a third instruction, controlling the front lifting member and the rear lifting member to descend to the first preset position; In response to a fourth instruction, the front valve plate and the rear valve plate are controlled to open the openings, and the front lifting member and the rear lifting member are controlled to descend to a third preset position; After the front and rear lifting members are controlled to descend to the third preset position, in response to a fifth instruction, the front and rear valve plates are controlled to close the opening, and then the front and rear lifting members are controlled to ascend to a fourth preset position; After the front and rear lifters are controlled to rise to the fourth preset position, in response to the sixth instruction, the front and rear lifters are controlled to fall to the third preset position, and then the front and rear valve plates are controlled to open.

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