Tray stacking equipment

Abstract

The utility model belongs to the technical field of material tray stacking, and provides material tray stacking equipment which comprises a rack with a working platform, and a conveying mechanism, a material tray clamping mechanism and a jacking mechanism which are connected to the working platform, the conveying mechanism comprises a first conveying line and a second conveying line which are arranged in a spaced mode. A material disc is arranged on the first conveying line and the second conveying line in a striding mode. The charging tray clamping mechanism is located above the conveying mechanism and comprises a first clamping part and a second clamping part which are located on the two sides of the conveying direction of the conveying mechanism respectively, and a stock bin for stacking the charging trays is formed between the first clamping part and the second clamping part; the jacking mechanism is located between the first conveying line and the second conveying line and used for jacking the trays on the conveying mechanism to the stock bin, and the tray clamping mechanism clamps the trays in the stock bin so that the trays can be stacked. The material tray recycling device is beneficial to improving the material tray recycling efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of tray stacking, in particular to a tray stacking device. Background Art

[0002] Feed trays are widely used in the automated production of electronic products, particularly in the loading and unloading stages of automated production lines. They are typically made of injection-molded rigid plastic and feature several grooves to hold the electronic components for circulation on the production line.

[0003] In the prior art, after a reclaimer removes material from a tray, a tray transfer device removes the material from the tray, and an operator then re-stacks the empty trays. This requires manual intervention after the tray transfer device unloads the material from the tray, which is time-consuming and labor-intensive, impacting tray collection efficiency. Therefore, a new technical solution is needed to address this technical issue. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a tray stacking device for solving the problem of how to improve the recycling efficiency of the trays in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a tray stacking device, which is specifically arranged as follows: it includes a frame, a conveying mechanism, a tray clamping mechanism and a lifting mechanism, wherein the frame is provided with a working platform; the conveying mechanism is connected to the working platform for conveying the tray, including a first conveying line and a second conveying line arranged at intervals, and the tray is arranged astride the first conveying line and the second conveying line; the tray clamping mechanism is connected to the working platform and is located above the conveying mechanism, including a first clamping part and a second clamping part respectively located on both sides of the conveying direction of the conveying mechanism, and a material bin for stacking the trays is formed between the first clamping part and the second clamping part; the lifting mechanism is connected to the working platform and is located between the first conveying line and the second conveying line, and is used to lift the tray on the conveying mechanism to the material bin, and the first clamping part and the second clamping part clamp the tray in the material bin; when the trays in the material bin are full, the tray clamping mechanism releases the trays stacked in the material bin to the conveying mechanism, so as to convey the stacked trays to the next process.

[0006] Optionally, the first clamping portion includes at least two first clamping assemblies, and the second clamping portion includes at least two second clamping assemblies; the first clamping assemblies and the second clamping assemblies are arranged opposite to each other to form the silo.

[0007] Optionally, the first clamping assembly and the second clamping assembly both include a first base plate, a first adapter plate, a first clamping plate connected to the first adapter plate, a first limit plate connected to the first clamping plate, and a first guide member and a first drive member connected to the first base plate. The first adapter plate is connected to the first guide member and the first drive member at the same time. When the first drive member drives the first adapter plate to move along the guide direction of the first guide member, it drives the first clamping plate to extend into or out of the hopper to clamp or release the tray.

[0008] Optionally, the first clamping assembly and the second clamping assembly both further include at least one first adapter connected to the first base plate, and a first detection member is connected to any one of the first adapters located in the silo for detecting whether the silo is full; and / or a second limit plate is connected to any one of the first adapters located at the front end of the silo along the conveying direction of the conveying mechanism for limiting the material tray along the conveying direction of the conveying mechanism.

[0009] Optionally, the lifting mechanism includes a second detection member, a lifting assembly and a blocking assembly, the lifting assembly includes a second driving member and a lifting plate connected to the driving end of the second driving member, the blocking assembly includes a third driving member and a baffle connected to the driving end of the third driving member, when the second detection member detects the material tray, the third driving member drives the baffle to rise to block the material tray above the lifting plate, and then, the second driving member drives the lifting plate to rise to lift the material tray to the silo.

[0010] Optionally, the jacking assembly also includes a second base plate located below the working platform, a first transmission screw connected to the driving end of the second driving member, a first transmission nut connected to the first transmission screw, and a guide rod connected between the second base plate and the jacking plate, the guide rod passes through the working platform, the first transmission nut is fixed on the working platform, the second driving member is connected to the second base plate, the jacking plate is connected to the end of the first transmission screw away from the second driving member, the second driving member drives the first transmission screw to rotate, and drives the jacking plate to move along the guide direction of the guide rod to lift the material tray; and / or, the blocking assembly also includes a first support member connected to the working platform, and the third driving member is connected to the first support member; and / or, the second detection member is connected to the jacking plate and is located below the jacking surface of the jacking plate.

[0011] Optionally, at least two groups of the jacking mechanisms are provided, and the jacking mechanisms are provided in a one-to-one correspondence with the silos and are located below the silos.

[0012] Optionally, the tray stacking device also includes a first mounting component and a translation mechanism connected to the working platform, the translation mechanism includes a second mounting component and a translation drive component, and the translation drive component can drive the second mounting component to move closer to or away from the first mounting component; the first conveyor line and the first clamping part are connected to the first mounting component, and the second conveyor line and the second clamping part are connected to the second mounting component.

[0013] Optionally, the first mounting assembly includes a second support member and a first connecting member connected to the second support member, and the first conveying line and the first clamping part are connected to the first connecting member; and / or, the second mounting assembly includes a third support member and a second connecting member connected to the third support member, and the second conveying line and the second clamping part are connected to the second connecting member; and / or, the translation drive assembly includes a fourth driving member, a second transmission screw connected to the driving end of the fourth driving member, a second transmission nut connected to the second transmission screw, a second adapter connected to the second transmission nut and a second guide member arranged on both sides of the second transmission screw, and the second mounting assembly is simultaneously connected to the movable ends of the second adapter and the second guide member, and the fourth driving member drives the second transmission screw to rotate to drive the second mounting assembly to approach or move away from the first mounting assembly.

[0014] Optionally, guide plates are provided at the head ends of the first conveying line and the second conveying line.

[0015] As described above, the tray stacking device of the present invention has the following beneficial effects:

[0016] The material tray is transported across the first conveyor line and the second conveyor line that are set at intervals. The jacking mechanism located between the first conveyor line and the second conveyor line lifts the material tray from the conveying mechanism to the material bin of the material tray clamping mechanism. Subsequently, the first clamping part and the second clamping part clamp the material tray in the material bin. The material trays are stacked in the material bin in this reciprocating manner until the material bin is full. Subsequently, the first clamping part and the second clamping part release the stacked material trays to the conveying mechanism for transfer to the next process, realizing automatic stacking of the material trays, and no manual participation is required throughout the process, which is conducive to improving the recycling efficiency of the material trays. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic structural diagram of a tray stacking device according to an embodiment of the present invention;

[0018] Figure 2 Shown is a first partial structural schematic diagram of a tray stacking device according to an embodiment of the present utility model;

[0019] Figure 3Shown is a second partial structural schematic diagram of the tray stacking device according to an embodiment of the present utility model;

[0020] Figure 4 Shown is a structural schematic diagram of a tray clamping mechanism according to an embodiment of the present utility model;

[0021] Figure 5 Shown is a structural schematic diagram of the jacking mechanism of an embodiment of the present utility model.

[0022] Description of Reference Numerals

[0023] 1-frame; 11-working platform;

[0024] 2- conveying mechanism; 21- first conveying line; 22- second conveying line; 23- guide plate;

[0025] 3- tray clamping mechanism; 31- first bottom plate; 32- first guide member; 33- first driving member; 34- first adapter plate; 35- first clamping plate; 36- first limit plate; 37- first adapter member; 38- first detection member; 39- second limit plate;

[0026] 4 - Lifting mechanism; 41 - Second detection member; 42 - Lifting assembly; 421 - Second driving member; 422 - Lifting plate; 423 - Second bottom plate; 424 - First transmission screw; 425 - First transmission nut; 426 - Guide rod; 427 - Limiting ring; 43 - Blocking assembly; 431 - Third driving member; 432 - Baffle; 433 - First support member;

[0027] 5-first mounting assembly; 51-second support member; 52-first connecting member;

[0028] 6-translation mechanism; 61-third support member; 62-second connecting member; 63-fourth driving member; 64-second transmission screw; 65-second transmission nut; 66-second adapter; 67-second guide member. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand 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 details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0030] It should be noted that the diagrams provided in the present embodiment are only for the purpose of illustrating the basic concept of the present invention. Therefore, the diagrams only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. The form, quantity and proportion of each component can be changed at will during actual implementation, and the component layout form may also be more complex. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical content.

[0031] like Figure 1 and Figure 2 As shown, some embodiments of the present application provide a tray stacking device, including a frame 1, a conveying mechanism 2, a tray clamping mechanism 3, and a lifting mechanism 4. A working platform 11 is provided on the frame 1, and the conveying mechanism 2, the tray clamping mechanism 3, and the lifting mechanism 4 are all mounted on the working platform 11.

[0032] The conveying mechanism 2 includes a first conveying line 21 and a second conveying line 22 that are spaced apart. The material tray spans the first conveying line 21 and the second conveying line 22 so that the conveying mechanism 2 can convey the material tray.

[0033] The lifting mechanism 4 is arranged between the first conveying line 21 and the second conveying line 22 and is located below the conveying surfaces of the first conveying line 21 and the second conveying line 22 so as to lift the material tray conveyed on the conveying mechanism 2.

[0034] The tray clamping mechanism 3 is located above the conveying mechanism 2 and includes a first clamping portion and a second clamping portion respectively located on both sides of the conveying direction of the conveying mechanism 2 .

[0035] A silo for stacking trays is formed between the first and second clamping parts. After the lifting mechanism 4 lifts the trays into the silo, the first and second clamping parts clamp the trays in the silo, and this process repeats to stack the trays in the silo. Once the silo is full, the first and second clamping parts release the stacked trays, allowing them to fall onto the first and second conveyor lines 21 and 22 for transport to the next process. This process achieves automatic tray stacking without manual intervention, which helps improve tray recovery efficiency.

[0036] like Figure 3 As shown, in some embodiments, a first mounting assembly 5 and a translation mechanism 6 are further installed on the work platform 11. The translation mechanism 6 includes a second mounting assembly and a translation drive assembly, which can drive the second mounting assembly to move closer to or away from the first mounting assembly 5. The first conveyor line 21 and the first clamping portion are installed on the first mounting assembly 5, and the second conveyor line 22 and the second clamping portion are installed on the second mounting assembly. When the tray needs to be changed, that is, the size of the tray changes, the translation drive assembly drives the second mounting assembly to move closer to or away from the first mounting assembly 5, thereby making the second conveyor line 22 and the second clamping portion closer to or away from the first conveyor line 21 and the first clamping portion, which is conducive to improving the versatility of the tray stacking device of the present application.

[0037] In some embodiments, the first mounting assembly 5 includes a second support member 51 and a first connecting member 52 , wherein the first connecting member 52 is mounted on the second support member 51 by screws or the like. The first conveyor line 21 and the first clamping portion are mounted on the first connecting member 52 .

[0038] In some embodiments, the second mounting assembly includes a third support member 61 and a second connecting member 62 , and the second connecting member 62 is mounted on the third support member 61 by screws or the like. The second conveyor line 22 and the second clamping portion are mounted on the second connecting member 62 .

[0039] In some embodiments, the translation drive assembly includes a fourth drive member 63, a second transmission screw 64, a second transmission nut 65, a second adapter 66, and a second guide member 67. The second transmission screw 64 is mounted on the driving end of the fourth drive member 63, the second transmission nut 65 is mounted on the second transmission screw 64, the second adapter 66 is mounted on the second transmission nut 65, and the first guide member 32 is arranged on both sides of the second transmission screw 64. The second mounting assembly is mounted on the movable ends of both the second adapter 66 and the second guide member 67. When the fourth drive member 63 drives the second transmission screw 64 to rotate, the second adapter 66 is driven to move synchronously with the second transmission nut 65, thereby driving the second mounting assembly to move closer to or farther from the first mounting assembly 5 along the guide direction of the second guide member 67.

[0040] It should be noted that bearing seats are provided on both sides of the second transmission screw 64 in the length direction to movably support the second transmission screw 64.

[0041] Illustratively, the third support member 61 of the second mounting assembly is simultaneously mounted on the movable ends of the second adapter member 66 and the second guide member 67 .

[0042] Exemplarily, the fourth driving member 63 provides driving force for the rotation of the second transmission screw 64, including but not limited to being set as a motor, a hand wheel, etc. The second guide member 67 guides the movement of the second mounting assembly, including but not limited to being set as a linear guide rail.

[0043] In some embodiments, guide plates 23 are provided at the head ends of the first conveyor line 21 and the second conveyor line 22 to guide the material trays entering the conveying mechanism 2 to prevent the material trays from falling.

[0044] In some embodiments, the first conveyor line 21 and the second conveyor line 22 each include a fifth driving member, a driving wheel, a driven wheel, and a transmission belt. The driving wheel is mounted on a driving end of the fifth driving member, and the transmission belt is connected to both the driving wheel and the driven wheel. The tray is placed on the transmission belt. When the fifth driving member drives the driving wheel to rotate, the transmission belt drives the tray to move.

[0045] Exemplarily, the fifth driving member provides driving force for the movement of the transmission belt, including but not limited to being set as a motor, etc.

[0046] like Figure 4 As shown, in some embodiments, the first clamping portion includes at least two first clamping assemblies. The number of first clamping assemblies is set according to actual needs, and the specific number can be 2, 3, 4, etc. The second clamping portion includes at least two second clamping assemblies. The number of second clamping assemblies is set according to actual needs, and the specific number can be 2, 3, 4, etc. The first clamping assembly and the second clamping assembly are arranged relative to each other to form a silo. The specific number of silos depends on the number of first clamping assemblies and second clamping assemblies. Providing two or more silos helps improve the efficiency of tray recovery.

[0047] In one application example, when the first clamping section includes two first clamping assemblies and the second clamping section includes two second clamping assemblies, there are two silos. The silo located at the front end of conveyor mechanism 2 in the conveying direction is designated as the first silo, and the silo located at the rear end of conveyor mechanism 2 in the conveying direction is designated as the second silo. When the first silo is full, the first and second clamping assemblies of the first silo release the stacked trays in the first silo to conveyor mechanism 2, which then transports the stacked trays to the next process. During this process, the second silo is activated to stack the trays conveyed by conveyor mechanism 2 into the second silo.

[0048] In some embodiments, both the first clamping assembly and the second clamping assembly include a first base plate 31, a first guide member 32, a first driver member 33, a first adapter plate 34, a first clamping plate 35, and a first stop plate 36. The first guide member 32 and the first driver member 33 are both mounted on the first base plate 31. The first adapter plate 34 is connected to both the movable end of the first guide member 32 and the driving end of the first driver member 33. The first clamping plate 35 is mounted on the first adapter plate 34, and the first stop plate 36 is mounted on the first clamping plate 35. The first guide member 32 is positioned on either side of the first driver member 33. When the first driver member 33 drives the first adapter plate 34 to move, it drives the first clamping plate 35 to extend into or out of the silo to clamp or release the tray. The first stop plate 36 moves synchronously with the first clamping plate 35 to limit the position of the tray in the silo perpendicular to the conveying direction of the conveying mechanism 2, thereby shaping the tray within the silo.

[0049] Exemplarily, the first driving member 33 provides driving force for the movement of the first clamping plate 35, including but not limited to being set as a linear cylinder, etc. The first guiding member 32 guides the movement of the first clamping plate 35, including but not limited to being set as a linear guide rail.

[0050] In some embodiments, the first clamping assembly and the second clamping assembly also include at least one first adapter 37 installed on the first base plate 31, and a first detection member 38 is installed on any first adapter 37 located in the silo. The first detection member 38 is located at the full position of the silo to detect whether the material tray of the silo is full.

[0051] Exemplarily, the first detection element 38 includes but is not limited to being a photoelectric sensor or the like.

[0052] In some embodiments, a second limiting plate 39 is mounted on any first adapter 37 located at the front end of the silo along the conveying direction of the conveyor mechanism 2 to limit the position of the trays along the conveying direction of the conveyor mechanism 2. The first limiting plate 36 and the second limiting plate 39 limit the position of the trays within the silo, which facilitates the orderly stacking of the trays within the silo.

[0053] like Figure 5As shown, in some embodiments, the lifting mechanism 4 includes a second detection member 41, a lifting assembly 42, and a blocking assembly 43. The lifting assembly 42 includes a second driving member 421 and a lifting plate 422, which is mounted on the driving end of the second driving member 421. The blocking assembly 43 includes a third driving member 431 and a baffle 432, which is mounted on the driving end of the third driving member 431. When the second detection member 41 detects a material tray, the third driving member 431 drives the baffle 432 to rise, blocking the material tray above the lifting plate 422. Subsequently, the second driving member 421 drives the lifting plate 422 to rise, lifting the material tray to the silo, thereby stacking the material tray inside the silo.

[0054] In one application example, while the lifting plate 422 is lifting the tray, the first clamping plate 35 and the second clamping plate exit the silo, causing all the trays in the silo to fall onto the lifting plate 422. After the lifting plate 422 lifts the bottom of the lowest tray to a position higher than the first clamping plate 35 and the second clamping plate, the first clamping plate 35 and the second clamping plate extend into the silo. Subsequently, the lifting plate 422 drives all the trays in the silo downward, so that the first clamping plate 35 and the second clamping plate support all the trays in the silo, completing a tray stack.

[0055] In some embodiments, the second detection member 41 is mounted on the lifting plate 422 by screws or the like and is located below the lifting surface of the lifting plate 422 to detect whether the material tray is above the lifting plate 422. The second detection member 41 can be mounted on the lifting plate 422 near the front end along the conveying direction of the conveying mechanism 2.

[0056] Exemplarily, the second detection element 41 includes but is not limited to being a photoelectric sensor or the like.

[0057] In some embodiments, the lifting assembly 42 further includes a second base plate 423, a first transmission screw 424, a first transmission nut 425, and a guide rod 426. The second base plate 423 is located below the work platform 11, the second drive member 421 is mounted on the second base plate 423, the first transmission screw 424 is mounted on the driving end of the second drive member 421, the first transmission nut 425 is mounted on the first transmission screw 424, and the first transmission nut 425 is fixedly mounted on the work platform 11. The lifting plate 422 is mounted on the end of the first transmission screw 424 facing away from the second drive member 421, and the guide rod 426 is mounted between the second base plate 423 and the lifting plate 422 and passes through the work platform 11. When the second drive member 421 drives the first transmission screw 424 to rotate, it drives the lifting plate 422 to move along the guide direction of the guide rod 426 to lift the material tray to the silo.

[0058] Exemplarily, the number of guide rods 426 is set to at least 2 to ensure the stability of the lifting plate 422 during movement, and the specific number is set based on actual needs.

[0059] Exemplarily, the second driving member 421 provides driving force for the rotation of the first transmission screw 424, including but not limited to being set as a motor, etc. The third driving member 431 provides driving force for the movement of the baffle 432, including but not limited to being set as a linear cylinder, etc.

[0060] In some embodiments, the guide rod 426 is installed with a limit ring 427, which is located above and below the working platform 11 respectively to limit the maximum lifting distance and the maximum retraction distance of the lifting plate 422.

[0061] In some embodiments, the blocking assembly 43 further includes a first support member 433 , which is mounted on the working platform 11 , and the third driving member 431 is mounted on the first support member 433 .

[0062] In some embodiments, at least two groups of lifting mechanisms 4 are provided, and the lifting mechanisms 4 are provided one-to-one with the silos and are located below the silos. The number of lifting mechanisms 4 is set according to the number of silos, and the specific number can be 2, 3, 4, etc.

[0063] To sum up, the utility model provides a tray stacking device, in which the trays are transported across a first conveyor line and a second conveyor line that are spaced apart. The lifting mechanism located between the first conveyor line and the second conveyor line lifts the trays from the conveying mechanism to the material bin of the tray clamping mechanism. Subsequently, the first clamping part and the second clamping part clamp the trays in the material bin, and the trays are stacked in the material bin in this reciprocating manner until the bin is full. Subsequently, the first clamping part and the second clamping part release the stacked trays to the conveying mechanism for transfer to the next process, thereby realizing automatic stacking of the trays, and no manual participation is required throughout the process, which is beneficial to improving the recycling efficiency of the trays.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A tray stacking device, characterized in that: include: Frame with working platform; A conveying mechanism, connected to the working platform, for conveying the material tray, comprising a first conveying line and a second conveying line arranged at intervals, wherein the material tray is arranged across the first conveying line and the second conveying line; a tray clamping mechanism connected to the work platform and located above the conveying mechanism, comprising a first clamping portion and a second clamping portion respectively located on both sides of the conveying direction of the conveying mechanism, wherein a silo for stacking the trays is formed between the first clamping portion and the second clamping portion; a lifting mechanism connected to the working platform and located between the first conveying line and the second conveying line, for lifting the material tray on the conveying mechanism to the material bin, and the first clamping part and the second clamping part clamping the material tray in the material bin; When the material trays in the material bin are full, the material tray clamping mechanism releases the stacked material trays in the material bin to the conveying mechanism, so as to convey the stacked material trays to the next process.

2. The tray stacking device according to claim 1, characterized in that: The first clamping portion includes at least two first clamping assemblies, and the second clamping portion includes at least two second clamping assemblies; the first clamping assemblies and the second clamping assemblies are arranged opposite to each other to form the silo.

3. The tray stacking device according to claim 2, characterized in that: The first clamping assembly and the second clamping assembly both include a first base plate, a first adapter plate, a first clamping plate connected to the first adapter plate, a first limit plate connected to the first clamping plate, and a first guide member and a first driving member connected to the first base plate. The first adapter plate is connected to the first guide member and the first driving member at the same time. When the first driving member drives the first adapter plate to move along the guide direction of the first guide member, it drives the first clamping plate to extend into or out of the hopper to clamp or release the tray.

4. The tray stacking device according to claim 3, characterized in that: The first clamping assembly and the second clamping assembly both further include at least one first adapter connected to the first base plate, and a first detection member is connected to any of the first adapters located in the silo for detecting whether the silo is full; and / or a second limit plate is connected to any of the first adapters located at the front end of the silo along the conveying direction of the conveying mechanism for limiting the material tray along the conveying direction of the conveying mechanism.

5. The tray stacking device according to claim 1, characterized in that: The lifting mechanism includes a second detection member, a lifting assembly and a blocking assembly. The lifting assembly includes a second driving member and a lifting plate connected to the driving end of the second driving member. The blocking assembly includes a third driving member and a baffle connected to the driving end of the third driving member. When the second detection member detects the material tray, the third driving member drives the baffle to rise to block the material tray above the lifting plate. Subsequently, the second driving member drives the lifting plate to rise to lift the material tray to the silo.

6. The tray stacking device according to claim 5, characterized in that: The jacking assembly also includes a second base plate located below the working platform, a first transmission screw connected to the driving end of the second driving member, a first transmission nut connected to the first transmission screw, and a guide rod connected between the second base plate and the jacking plate, the guide rod passes through the working platform, the first transmission nut is fixed on the working platform, the second driving member is connected to the second base plate, the jacking plate is connected to the end of the first transmission screw away from the second driving member, the second driving member drives the first transmission screw to rotate, and drives the jacking plate to move along the guide direction of the guide rod to lift the material tray; and / or the blocking assembly also includes a first support member connected to the working platform, and the third driving member is connected to the first support member; and / or the second detection member is connected to the jacking plate and is located below the jacking surface of the jacking plate.

7. The tray stacking device according to claim 5, characterized in that: At least two groups of the jacking mechanisms are provided. The jacking mechanisms are provided in one-to-one correspondence with the silos and are located below the silos.

8. The tray stacking device according to any one of claims 1 to 7, characterized in that: The tray stacking device also includes a first mounting assembly and a translation mechanism connected to the working platform, the translation mechanism includes a second mounting assembly and a translation drive assembly, and the translation drive assembly can drive the second mounting assembly to move closer to or away from the first mounting assembly; the first conveying line and the first clamping part are connected to the first mounting assembly, and the second conveying line and the second clamping part are connected to the second mounting assembly.

9. The tray stacking device according to claim 8, characterized in that: The first mounting assembly includes a second support member and a first connecting member connected to the second support member, and the first conveying line and the first clamping part are connected to the first connecting member; and / or, the second mounting assembly includes a third support member and a second connecting member connected to the third support member, and the second conveying line and the second clamping part are connected to the second connecting member; and / or, the translation drive assembly includes a fourth driving member, a second transmission screw connected to the driving end of the fourth driving member, a second transmission nut connected to the second transmission screw, a second adapter connected to the second transmission nut and a second guide member arranged on both sides of the second transmission screw, and the second mounting assembly is simultaneously connected to the movable ends of the second adapter and the second guide member, and the fourth driving member drives the second transmission screw to rotate to drive the second mounting assembly to approach or move away from the first mounting assembly.

10. The tray stacking device according to claim 8, characterized in that: The head ends of the first conveying line and the second conveying line are both provided with guide plates.

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