Tray conveying mechanism

Abstract

The utility model relates to the technical field of material conveying, in particular to a tray conveying mechanism. Empty trays stacked on the stock bin are supported and separated through the supporting component, the separated empty trays are discharged to the guide rail one by one through the material taking assembly, and the driver of the material taking component drives the overturning frame to clamp the two sides of the trays and convey the trays to the feeding station for loading. The material taking component is used for taking materials, the discharging component is used for conveying and discharging the loaded material trays, so that rapid conveying of the material trays is completed, the material taking component and the discharging component are used for conveying the material trays of different strokes, and compared with a traditional conveying mode, the time consumed for conveying the material trays is shortened, and the conveying efficiency is greatly improved; the overturning frame is adopted for clamping the two sides of the material disc, the effect of grabbing the material disc can be achieved, the effect of protecting the material disc in the carrying process can be achieved, and the material disc is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of material transmission, and particularly to a material tray conveying mechanism. Background Art

[0002] In the prior art, the operation of loading products into trays usually adopts a combination of manual and automated or fully automated loading. In the combination of manual and automated or fully automated loading, the tray conveying unit generally needs to transfer the tray to other workstations after loading. The use of a single conveying mode will take up the time for loading empty trays, but there is no corresponding benefit, affecting the efficiency of tray transmission. At the same time, when two trays are tightly fitted, direct clamping and separation may cause unsuccessful separation of the trays or damage to the trays. Therefore, it is necessary to improve the prior art to overcome the above-mentioned defects in the prior art. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tray conveying mechanism which adopts multiple structures to transport trays of different travels, reduces the time consumed in conveying the trays, and greatly improves the conveying efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model to solve its technical problems is:

[0005] A tray conveying mechanism, comprising:

[0006] A feeding assembly comprises a feeding frame, and guide rails are arranged on both sides of the feeding frame;

[0007] A material bin is arranged on the feeding rack, and a plurality of empty material trays are stacked on the material bin;

[0008] A support assembly is arranged on the feeding rack, the support assembly comprises a plurality of support components, and the support components are used to support the empty material trays stacked on the silo;

[0009] A material taking assembly is arranged below the silo and is used to take the empty material trays stacked on the silo one by one onto the guide track;

[0010] A moving assembly is arranged below the feeding rack, and the moving assembly includes a material taking component and a material unloading component, both of which are connected to the driving component, the material taking component is used to transfer the empty material tray to the loading station for loading, and the material unloading component is used to transfer the loaded material tray to unload;

[0011] Among them, the moving assembly includes a moving frame, the material picking component and the material unloading component are both slidably arranged on the moving frame, the material picking component has the same structure as the material unloading component, the material picking component includes a material picking plate, and the material picking plate has flip frames hinged on both sides, the flip frames are connected to the driver, and the driver drives the flip frames to clamp the two sides of the material tray.

[0012] In one embodiment of the utility model, the support assembly includes a support seat, a support cylinder is provided on the support seat, the support cylinder is drivingly connected to the support plate, a guide block is provided on the support seat, a guide groove is provided on the guide block, the support plate is passed through the guide groove, and the support cylinder drives the support plate to extend out of the guide block to support the bottom of the stacked empty material trays.

[0013] In one embodiment of the utility model, the material bin includes two material baffle plates, which are symmetrically arranged on the feeding rack, and guide plates are arranged on both sides of the material baffle plates. The guide plates are provided with guide grooves matching the four corners of the material tray, and the guide plates on the two material baffle plates are arranged to form a positioning station for limiting the stacked empty material trays.

[0014] In one embodiment of the utility model, the material picking assembly includes a material picking bracket and a power component, the power component is drivingly connected to the material picking bracket, the material picking bracket includes two support plates, a gap is provided between the guide rail and the moving assembly, the support plate is passed through the gap, and the power component drives the two support plates to pass through the gap to pick up empty material trays stacked on the silo.

[0015] In one embodiment of the utility model, the material picking assembly also includes a fixed frame and a material picking frame, a driving module is provided on the material picking frame, the driving module is connected to the material picking plate by driving, the material picking plate and the fixed frame are connected by a guide rod, the support plate is provided on the fixed frame, a guide sleeve is provided on the material picking frame, and the guide rod is passed through the guide sleeve.

[0016] In one embodiment of the utility model, the flip frame includes a flip plate, a clamping plate is vertically arranged on the flip plate, a clamping groove is arranged on the clamping plate, an opening is arranged on the material picking plate, a rotating shaft is arranged on the opening, the flip plate is rotated on the rotating shaft, and the driver drives the flip plate to rotate around the rotating shaft.

[0017] In one embodiment of the utility model, the driver includes a driving cylinder, which is drivingly connected to a driving block, the driving block is slidably mounted on a driving frame, the driving frame is disposed on the material picking plate, a driving rod is hingedly mounted on the driving block, the driving rod is vertically connected to the flip plate, limiting grooves are disposed on both sides of the driving frame, a limiting block matching the limiting groove is disposed on the driving block, and the limiting block is passed through the limiting groove.

[0018] In one embodiment of the utility model, the movable frame is provided with a guide rail, the material picking component and the material unloading component are both provided with sliders, the sliders are slidably mounted on the guide rails, the movable frame is provided with two material stopping frames, the material stopping frames are provided with buffer blocks, and the buffer blocks are arranged opposite to the material picking component.

[0019] In one embodiment of the utility model, the driving component includes a driving motor and two driving frames, the two driving frames are respectively arranged on a moving frame, and a synchronous wheel is arranged on the driving frame, and the two synchronous wheels are connected by a synchronous belt, and the material picking component or the material unloading component is connected to one side of the synchronous belt through a connecting piece, and the driving motor is drivingly connected to one of the two synchronous wheels, and the driving motor drives the synchronous belt on the synchronous wheel to move, thereby driving the material picking component or the material unloading component to reciprocate along the moving frame.

[0020] In one embodiment of the utility model, a limiting component is provided on the loading station, and the limiting component includes two limiting frames, and the two limiting frames are respectively arranged on both sides of the feeding frame. A limiting cylinder is provided on the limiting frame, and the limiting cylinder is drivingly connected to the limiting plate, and the limiting cylinder drives the limiting plate to block the material tray on the loading station.

[0021] Beneficial effects of the utility model:

[0022] The supporting components of the utility model support and separate the empty material trays stacked on the material bin, and the picking component then unloads the separated empty material trays one by one onto the guide track, the driver of the picking component drives the turning frame to clamp the two sides of the material tray and transmit it to the loading station for loading, and the unloading component then unloads the loaded material tray, thereby completing the rapid transmission of the material tray, and adopting the picking component and the unloading component to transport the material trays of different strokes respectively, compared with the traditional conveying method, the time consumed in the conveying of the material tray is reduced, and the conveying efficiency is greatly improved; the turning frame is adopted to clamp the two sides of the material tray, which can not only play the role of grasping the material tray, but also can protect the material tray during the transportation process to prevent damage to the material tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a material tray conveying mechanism of the utility model.

[0024] Figure 2 It is a schematic diagram of a material taking component of the utility model.

[0025] Figure 3 It is a schematic diagram of a mobile component of the utility model.

[0026] Figure 4 It is a schematic diagram of a material taking component of the utility model.

[0027] Explanation of the numbers in the figure: 1. Feeding rack; 11. Guide rail; 2. Loading station; 21. Limiting cylinder; 22. Limiting plate; 3. Driving component; 4. Unloading component; 5. Picking component; 51. Picking plate; 52. Turning rack; 521. Rotating shaft; 522. Turning plate; 523. Clamping plate; 53. Driver; 531. Driving cylinder; 532. Driving block; 633. Driving rod; 534. Driving rack; 535. Limiting groove; 536. Limiting block; 54. Guide rail ; 55. Synchronous wheel; 56. Driving motor; 57. Synchronous belt; 58. Connecting piece; 59. Sliding block; 591. Material stopper; 592. Buffer block; 6. Material bin; 61. Material stopper plate; 62. Guide plate; 63. Guide groove; 7. Support assembly; 71. Support cylinder; 72. Support plate; 73. Guide block; 8. Material picker bracket; 81. Fixed bracket; 82. Support plate; 9. Power component; 92. Driving module; 93. Guide rod; 94. Material picker rack; 10. Material picker assembly. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0029] Reference Figure 1-4 As shown, a tray conveying mechanism comprises:

[0030] The feeding assembly comprises a feeding frame 1, and guide rails 11 are arranged on both sides of the feeding frame 1;

[0031] A material bin 6 is arranged on the feeding rack 1, and a plurality of empty material trays are stacked on the material bin 6;

[0032] A support assembly 7 is provided on the feeding rack 1, and the support assembly 7 includes a plurality of support components, and the support components are used to support the empty material trays stacked on the silo 6;

[0033] A material taking assembly 10 is disposed below the silo 6 and is used to unload the empty trays stacked on the silo 6 one by one onto the guide track 11;

[0034] A moving assembly is arranged below the feeding rack 1, and the moving assembly includes a material taking component 5 and a material unloading component 4, and both the material taking component 5 and the material unloading component 4 are connected to the driving component 3, and the material taking component 5 is used to transfer the empty material tray to the loading station 2 for loading, and the material unloading component 4 is used to transfer the loaded material tray to unload;

[0035] Among them, the moving assembly includes a moving frame, the material picking component 5 and the material unloading component 4 are both slidably arranged on the moving frame, the material picking component 5 has the same structure as the material unloading component 4, the material picking component 5 includes a material picking plate 51, and the material picking plate 51 has flip frames 52 hinged on both sides, the flip frames 52 are connected to the driver 53, and the driver 53 drives the flip frames 52 to clamp the two sides of the material tray.

[0036] The supporting components of the utility model support and separate the empty material trays stacked on the silo 6, and the picking component 10 then unloads the separated empty material trays one by one onto the guide track 11, and the driver 53 of the picking component 5 drives the turning frame 52 to clamp the two sides of the material tray and transfer it to the loading station 2 for loading, and the unloading component 4 then transfers and unloads the loaded material tray, thereby completing the rapid transmission of the material tray, and the picking component 5 and the unloading component 4 are used to transport material trays of different strokes respectively. Compared with the traditional conveying method, the time consumed in conveying the material trays is reduced, and the conveying efficiency is greatly improved; the turning frame 52 is used to clamp the two sides of the material tray, which can not only play the role of grasping the material tray, but also protect the material tray during transportation to prevent damage to the material tray.

[0037] In one embodiment of the utility model, the support assembly 7 includes a support seat, a support cylinder 71 is provided on the support seat, the support cylinder 71 is drivingly connected to the support plate 72, a guide block 73 is provided on the support seat, a guide groove is provided on the guide block 73, the support plate 72 is inserted into the guide groove, and the support cylinder 71 drives the support plate 72 to extend out of the guide block 73 to support the bottom of the stacked empty trays.

[0038] Specifically, the support cylinder 71 drives the support plate 72 to extend the guide block 73 to support the bottom of the stacked empty trays, so that it can support the empty trays and can also realize the separation operation of the empty trays. The bottom tray can be separated to achieve the separation of two trays. This tray separation mechanism has a small size, a simple structure, and a smooth movement.

[0039] In one embodiment of the utility model, the material bin 6 includes two material baffle plates 61, and the two material baffle plates 61 are symmetrically arranged on the feeding rack 1. Guide plates 62 are arranged on both sides of the material baffle plates 61. The guide plates 62 are provided with guide grooves 63 matching the four corners of the material tray. The guide plates 62 on the two material baffle plates 61 are arranged to form a positioning station for limiting the stacked empty material trays.

[0040] Specifically, the supporting cylinder 71 drives the supporting plate 72 to extend out of the guide block 73 and pass through the bottom of the silo 6. The guide plates 62 on the two baffle plates 61 are arranged to form a positioning station for limiting the stacked empty trays. The empty trays are stacked and placed in the silo 6, and the four corners of the empty trays are slid on the guide groove 63 to limit and guide the stacked empty trays. The supporting plate 72 located at the bottom of the silo 6 supports the bottom of the stacked empty trays. During the unloading process, the empty trays can be prevented from tilting and falling, thereby preventing the trays from falling and being damaged, and ensuring the stability of the unloading.

[0041] In one embodiment of the utility model, the material picking assembly 10 includes a material picking bracket 8 and a power component 9, the power component 9 is drivingly connected to the material picking bracket 8, the material picking bracket 8 includes two support plates 82, a gap is provided between the guide rail 11 and the moving assembly, the support plate 82 is passed through the gap, and the power component 9 drives the two support plates 82 to pass through the gap to pick up the empty material trays stacked on the silo 6.

[0042] Specifically, the power component 9 drives the two support plates 82 to penetrate through the gap to lift the empty material trays stacked on the silo 6, so that the empty material trays are separated from the support plates 82. The power component 9 drives the two support plates 82 to lower the empty material trays stacked on the silo 6, so that the support plates 82 are aligned between the two lowest empty material trays of the stacked empty material trays. The supporting cylinder 71 drives the support plates 82 to extend and be inserted between the two lowest empty material trays. The power component 9 drives the two support plates 82 to continue to lower the empty material trays stacked on the silo 6, so that the empty material trays fall onto the guide rails 11, thereby completing the unloading of the empty material trays one by one, which can ensure the stability of the unloading of the empty material trays, and the reciprocating operation can improve the work efficiency.

[0043] In one embodiment of the utility model, the material picking assembly 10 also includes a fixed frame 81 and a material picking frame 94, and a driving module 92 is provided on the material picking frame 94, and the driving module 92 is connected to the material picking plate 51 by driving, and the material picking plate 51 is connected to the fixed frame 81 through a guide rod 93, the support plate 82 is arranged on the fixed frame 81, and a guide sleeve is provided on the material picking frame 94, and the guide rod 93 is passed through the guide sleeve.

[0044] Specifically, the driving module 92 can be a reciprocating linear driving mechanism such as a cylinder, an oil cylinder, a linear motor, a linear module, etc., which can realize the movement of the material picking plate 51 along the guide rod 93, and can guide the material picking bracket 8 to ensure the material picking accuracy of the material tray.

[0045] In one embodiment of the utility model, the flip frame 52 includes a flip plate 522, a clamping plate 523 is vertically arranged on the flip plate 522, a clamping groove is arranged on the clamping plate 523, an opening is arranged on the material picking plate 51, a rotating shaft 521 is arranged on the opening, the flip plate 522 is rotatably arranged on the rotating shaft 521, and the driver 53 drives the flip plate 522 to rotate around the rotating shaft 521.

[0046] Specifically, the driver 53 drives the flip plate 522 to rotate around the rotating shaft 521, thereby clamping the two sides of the material tray, which can quickly position the material tray, facilitate the material tray to slide quickly on the guide track 11, and improve the stability of the material tray transmission.

[0047] In one embodiment of the utility model, the driver 53 includes a driving cylinder 531, which is drivingly connected to a driving block 532. The driving block 532 is slidably mounted on a driving frame 534. The driving frame 534 is disposed on the material picking plate 51. A driving rod 633 is hingedly mounted on the driving block 532. The driving rod 633 is vertically connected to the flip plate 522. Limiting grooves 535 are disposed on both sides of the driving frame 534. A limiting block 536 matching the limiting groove 535 is disposed on the driving block 532. The limiting block 536 is passed through the limiting groove 535.

[0048] Specifically, a driving rod 633 is hinged on the driving block 532, and the driving rod 633 is vertically connected to the flip plate 522. The driving cylinder 531 is drivingly connected to the driving block 532. The driving cylinder 531 drives the driving block 532 to reciprocate to realize the flipping action of the flip frame 52, thereby ensuring the stability of clamping the material tray. A limit block 536 matching the limit groove 535 is provided on the driving block 532, and the limit block 536 is penetrated through the limit groove 535. The travel of the driving block 532 is limited by the limit block 536 and the limit groove 535 to prevent the flip frame 52 from excessively clamping the material tray, thereby ensuring the stability of the clamping force and avoiding damage to the material tray.

[0049] In one embodiment of the utility model, a guide rail 54 is provided on the movable frame, and a slider 59 is provided on both the material picking component 5 and the material unloading component 4. The slider 59 is slidably mounted on the guide rail 54. Two material stopping frames 591 are provided on the movable frame, and a buffer block 592 is provided on the material stopping frame 591. The buffer block 592 is arranged opposite to the material picking component 5.

[0050] Specifically, a buffer block 592 is provided on the material blocking frame 591, and the buffer block 592 is arranged opposite to the material picking component 5, and can limit the position of the material picking component 5, thereby ensuring the handling accuracy of the empty material tray and improving the positioning accuracy of the empty material tray. A slider 59 is provided on both the material picking component 5 and the material unloading component 4, and the slider 59 is slidably arranged on the guide rail 54, which can guide the movement of the material tray and ensure the stability of the material tray operation.

[0051] In one embodiment of the utility model, the driving component 3 includes a driving motor 56 and two driving frames 534, the two driving frames 534 are respectively arranged on the mobile frame, and the driving frame 534 is provided with a synchronous wheel 55, and the two synchronous wheels 55 are connected by a synchronous belt 57. The material picking component 5 or the material unloading component 4 is connected to one side of the synchronous belt 57 through a connecting piece 58, and the driving motor 56 is drivingly connected to one of the two synchronous wheels 55. The driving motor 56 drives the synchronous belt 57 on the synchronous wheel 55 to move, thereby driving the material picking component 5 or the material unloading component 4 to reciprocate along the mobile frame.

[0052] Specifically, the driving motor 56 drives the synchronous belt 57 on the synchronous wheel 55 to move, thereby driving the material taking component 5 or the material discharging component 4 to reciprocate along the moving frame, and can realize the forward and reverse movement of the material taking component 5 or the material discharging component 4, thereby driving the reciprocating movement. It is suitable for use as a device that requires long-distance reciprocating drive in the mechanical field.

[0053] In one embodiment of the utility model, a limiting component is provided on the loading station 2, and the limiting component includes two limiting frames, and the two limiting frames are respectively arranged on both sides of the feeding frame 1, and a limiting cylinder 21 is provided on the limiting frame, and the limiting cylinder 21 is drivingly connected to the limiting plate 22, and the limiting cylinder 21 drives the limiting plate 22 to block the material tray on the loading station 2.

[0054] Specifically, the limit cylinder 21 drives the limit plate 22 to block the material tray on the loading station 2, which can limit the position of the material tray on the loading station 2, ensure the stability of loading the empty material tray, and realize automatic positioning of the material tray. While realizing automation, it can also effectively reduce costs.

[0055] Usage process

[0056] The support plate 72 is aligned with the two empty trays at the bottom of the stacked empty trays, and the support cylinder 71 drives the support plate 72 to extend and be inserted between the two empty trays at the bottom, and the power component 9 drives the two support plates 82 to lower the empty trays stacked on the silo 6, so that the support plate 72 is aligned with the two empty trays at the bottom of the stacked empty trays, and the support cylinder 71 drives the support plate 72 to extend and be inserted between the two empty trays at the bottom, and the power component 9 drives the two support plates 82 to The empty material trays stacked on the silo 6 continue to descend, so that the empty material trays fall onto the guide track 11, and the driving component 3 drives the material picking component 5 to move below the empty material tray, and the driver 53 of the material picking component 5 drives the flip plate 522 to rotate around the rotating shaft 521 to clamp the two sides of the material tray, and the driving component 3 drives the empty material tray to move to the loading station 2 to load materials one by one, and the limit cylinder 21 drives the limit plate 22 to block the material tray on the loading station 2. After the empty material tray is loaded, the material picking component 5 loosens the material tray, and the driving component 3 drives the unloading component 4 to move below the material tray, and the driver 53 of the unloading component 4 drives the flip plate 522 to rotate around the rotating shaft 521 to clamp the two sides of the material tray, and the driving component 3 drives the material tray on the unloading component 4 to move along the guide track 11, and the unloading component 4 transfers the loaded material tray to unload.

[0057] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A tray conveying mechanism, characterized in that: include: A feeding assembly comprises a feeding frame, and guide rails are arranged on both sides of the feeding frame; A material bin is arranged on the feeding rack, and a plurality of empty material trays are stacked on the material bin; A support assembly is arranged on the feeding rack, the support assembly comprises a plurality of support components, and the support components are used to support the empty material trays stacked on the silo; A material taking assembly is arranged below the silo and is used to take the empty material trays stacked on the silo one by one onto the guide track; A moving assembly is arranged below the feeding rack, and the moving assembly includes a material taking component and a material unloading component, both of which are connected to the driving component, the material taking component is used to transfer the empty material tray to the loading station for loading, and the material unloading component is used to transfer the loaded material tray to unload; Among them, the moving assembly includes a moving frame, the material picking component and the material unloading component are both slidably arranged on the moving frame, the material picking component has the same structure as the material unloading component, the material picking component includes a material picking plate, and the material picking plate has flip frames hinged on both sides, the flip frames are connected to the driver, and the driver drives the flip frames to clamp the two sides of the material tray.

2. The tray conveying mechanism according to claim 1, characterized in that: The support assembly includes a support seat, a support cylinder is provided on the support seat, the support cylinder is drivingly connected to the support plate, a guide block is provided on the support seat, a guide groove is provided on the guide block, the support plate is passed through the guide groove, and the support cylinder drives the support plate to extend out of the guide block to support the bottom of the stacked empty material trays.

3. The tray conveying mechanism according to claim 1, characterized in that: The material bin includes two material baffle plates, which are symmetrically arranged on the feeding rack. Guide plates are arranged on both sides of the material baffle plates, and guide grooves matching the four corners of the material tray are arranged on the guide plates. The guide plates on the two material baffle plates are arranged to form a positioning station for limiting the stacked empty material trays.

4. The tray conveying mechanism according to claim 1, characterized in that: The material picking assembly includes a material picking bracket and a power component, the power component is drivingly connected to the material picking bracket, the material picking bracket includes two support plates, a gap is set between the guide rail and the moving assembly, the support plate is passed through the gap, and the power component drives the two support plates to pass through the gap to pick up empty material trays stacked on the silo.

5. The tray conveying mechanism according to claim 4, characterized in that: The material picking assembly also includes a fixed frame and a material picking frame, a driving module is arranged on the material picking frame, the driving module is connected to the material picking plate by driving, the material picking plate and the fixed frame are connected by a guide rod, the support plate is arranged on the fixed frame, a guide sleeve is arranged on the material picking frame, and the guide rod is passed through the guide sleeve.

6. The tray conveying mechanism according to claim 1, characterized in that: The flip frame includes a flip plate, a clamping plate is vertically arranged on the flip plate, a clamping groove is arranged on the clamping plate, an opening is arranged on the material picking plate, a rotating shaft is arranged on the opening, the flip plate is rotated on the rotating shaft, and the driver drives the flip plate to rotate around the rotating shaft.

7. The tray conveying mechanism according to claim 6, characterized in that: The driver includes a driving cylinder, which is drivingly connected to a driving block. The driving block is slidably mounted on a driving frame, which is arranged on the material-collecting plate. A driving rod is hinged on the driving block, which is vertically connected to the flip plate. Limiting grooves are arranged on both sides of the driving frame, and a limiting block matching the limiting groove is arranged on the driving block, and the limiting block is passed through the limiting groove.

8. The tray conveying mechanism according to claim 1, characterized in that: The movable frame is provided with a guide rail, the material taking component and the material unloading component are both provided with a slide block, the slide block is slidably arranged on the guide rail, the movable frame is provided with two material blocking frames, the material blocking frames are provided with a buffer block, and the buffer block is arranged opposite to the material taking component.

9. The tray conveying mechanism according to claim 1, characterized in that: The driving component includes a driving motor and two driving frames, the two driving frames are respectively arranged on the moving frame, the driving frame is provided with a synchronous wheel, the two synchronous wheels are connected by a synchronous belt, the material picking component or the material unloading component is connected to one side of the synchronous belt through a connecting piece, the driving motor is drivingly connected to one of the two synchronous wheels, and the driving motor drives the synchronous belt on the synchronous wheel to move, thereby driving the material picking component or the material unloading component to reciprocate along the moving frame.

10. The tray conveying mechanism according to claim 1, characterized in that: A limiting component is provided on the loading station, and the limiting component includes two limiting frames, which are respectively provided on both sides of the feeding frame. A limiting cylinder is provided on the limiting frame, and the limiting cylinder is drivingly connected to the limiting plate. The limiting cylinder drives the limiting plate to block the material tray on the loading station.

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