Feeding and discharging mechanism and production line body with same

Abstract

The utility model provides a feeding and discharging mechanism and a production line body with the feeding and discharging mechanism, and relates to the technical field of production line equipment, and the feeding and discharging mechanism for tray transfer mainly comprises a conveying assembly, a limiting assembly and a stacking and disassembling assembly. Through the arrangement of a limiting table of the limiting assembly, under the transportation of a displacement structure of a carrying table of the transportation assembly, the carrying table is matched with the limiting table for direct feeding and discharging, so that the matching time between the carrying table and the stacking and disassembling assembly can be saved, and then a first clamping structure and a second clamping structure of the stacking and disassembling assembly are further matched with the limiting table; according to the invention, the material trays are stacked or disassembled, so that the carrying platform and the displacement structure do not need to participate in the stacking or disassembling process, the carrying platform is transferred by using the stacking or disassembling time, and the transferring process and time are saved. The feeding and discharging mechanism effectively solves the problem that due to the fact that an existing feeding and discharging mechanism is not enough in matching degree, the transfer efficiency of a production line body is low.

Description

Technical Field

[0001] The present application relates to the technical field of production line equipment, and in particular to a loading and unloading mechanism and a production line having the same. Background Art

[0002] Currently in the photovoltaic cell manufacturing industry, cells need to go through multiple transfer and processing steps to be produced. Pallets need to be loaded and transferred between different processes. In order to improve transportation efficiency, pallets are often stacked and split to adapt to the different production efficiencies of different processes.

[0003] In the prior art, for example, the patent CN202310113548.6 provides a material unloading station, a material unloading method and a defect detection device, which discloses a horizontally movable insert drive assembly and a vertically lifted silo jacking module. The material tray is lifted or lowered by the jacking module, and the insert drive assembly is inserted into the bottom of a certain material tray to form a limit for the material tray and the material tray above it, thereby realizing the stacking and splitting of the material trays. The jacking of the material tray depends on the silo jacking module. The insert drive assembly in a fixed position cannot cooperate with the silo jacking module in the vertical direction, which results in a long time being consumed in the jacking process. The silo jacking module also needs to cooperate or be directly used for transportation between processes, resulting in low transportation efficiency of the entire production line.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0005] One of the technical problems to be solved by this application is that the existing loading and unloading mechanisms are not well coordinated, which affects the transfer efficiency of the production line.

[0006] In order to solve the above technical problems, on the first aspect, the embodiment of the present application provides a loading and unloading mechanism for material tray transfer, which mainly includes: a transportation component, a limiting component and a stacking and splitting component. The transportation component includes a connected carrier and a displacement structure. The carrier can slide along a first direction, and the carrier abuts against the bottom of the material tray to drive the material tray to slide; the limiting component includes a fixed limiting platform, and the limiting platform can form a limit with the bottom circumference of the material tray; the stacking and splitting component includes a first clamping structure, a second clamping structure and a connecting seat. The first clamping structure and the connecting seat can be slidably connected along the first direction, and the second clamping structure and the first clamping structure can be slidably connected along the first direction. Both the first clamping structure and the second clamping structure have a clamping state with the side of the material tray.

[0007] In some embodiments, the loading and unloading mechanism also includes a base, the limiting platform and the connecting seat are fixedly connected to the base, the first clamping structure is a fixed clamp, and the limiting assembly is located on the side of the first clamping structure away from the base.

[0008] In some embodiments, there are multiple limiting platforms, and the multiple limiting platforms form a limiting space, and the limiting space is adapted to the material tray.

[0009] In some embodiments, the limiting assembly is provided with a plurality of push structures corresponding one to one with each limiting platform, and each push structure is in a mating state with the side of the material tray.

[0010] In some embodiments, the push structure includes a first cylinder and a push member, wherein the push member is connected to the output end of the first cylinder and is arranged perpendicular to the side of the tray.

[0011] In some embodiments, the second clamping structure includes a first clamping end, a second cylinder and a third cylinder, the first clamping end is connected to the output end of the second cylinder, the second cylinder is connected to the output end of the third cylinder, the output direction of the third cylinder is the first direction, and the third cylinder is fixedly connected to the connecting seat.

[0012] In some embodiments, the connecting base includes a plurality of symmetrically arranged second clamping structures, and the first clamping structure is located between two adjacent second clamping structures.

[0013] In some embodiments, the first clamping structure includes a second clamping end, and the carrier is provided with a first avoidance area and a second avoidance area. Along the first direction, the second clamping end partially overlaps with the first avoidance area, and when the first clamping end is extended, it partially overlaps with the second avoidance area. The projection of the material tray along the first direction covers the first avoidance area and the second avoidance area.

[0014] In some embodiments, the carrier includes a supporting plate and multiple limiting plates, each limiting plate is fixedly connected to the supporting plate to form a placement cavity for the material tray, and a first avoidance area or a second avoidance area is formed between adjacent limiting plates.

[0015] In a second aspect, an embodiment of the present application provides a production line body, which includes a transmission track and multiple loading and unloading mechanisms, and the transmission track is respectively connected to the displacement structures of adjacent loading and unloading mechanisms.

[0016] Through the above technical scheme, the present application provides a loading and unloading mechanism and a production line body having the same, wherein the loading and unloading mechanism for transferring material trays mainly includes: a transportation component, a limiting component and a stacking and splitting component, the transportation component includes a connected carrier and a displacement structure, the carrier can slide along a first direction, the carrier abuts against the bottom of the material tray to drive the material tray to slide; the limiting component includes a fixed limiting platform, and the limiting platform can form a limit with the bottom circumference of the material tray; the stacking and splitting component includes a first clamping structure, a second clamping structure and a connecting seat, the first clamping structure and the connecting seat can be slidably connected along the first direction, the second clamping structure and the first clamping structure can be slidably connected along the first direction, and the first clamping structure and the second clamping structure both have a clamping state with the side of the material tray.

[0017] The limiting platform of the limiting assembly is set so that the carrier of the transport assembly can directly load and unload materials in cooperation with the limiting platform under the transportation of its displacement structure, which can save the coordination time between the stacking and splitting components. Afterwards, the first clamping structure and the second clamping structure of the stacking and splitting component further cooperate with the limiting platform to achieve stacking or splitting of the material tray. In this way, the carrier and the displacement structure do not need to participate in the stacking or splitting process, and the time for stacking or splitting is used to transfer the carrier, saving the transfer process and time. This application effectively solves the problem of insufficient coordination between existing loading and unloading mechanisms, resulting in low transfer efficiency of the production line.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a loading and unloading mechanism disclosed in an embodiment of the present application is shown;

[0021] Figure 2 Shown Figure 1 A partial enlarged schematic diagram of the loading and unloading mechanism;

[0022] Figure 3 Shown Figure 1 Schematic diagram of the main view of the loading and unloading mechanism;

[0023] Figure 4 Shown Figure 1 Side view of the loading and unloading mechanism;

[0024] Figure 5 A schematic diagram of the production line principle disclosed in an embodiment of the present application is shown;

[0025] Figure 6 Shown Figure 5 Schematic side view of the production line principle diagram.

[0026] The above drawings contain the following reference numerals:

[0027] 10. Material tray; 20. Transport component; 21. Carrying platform; 211. First avoidance area; 212. Second avoidance area; 213. Carrying plate; 214. Limiting plate; 22. Displacement structure; 23. Fourth cylinder; 30. Limiting component; 31. Limiting platform; 311. First limiting wall; 312. Second limiting wall; 313. Limiting groove; 32. Pushing structure; 321. First cylinder; 322. Pushing member; 40. Stacking and splitting component; 41. First clamping structure; 411. Second clamping end; 42. Second clamping structure; 421. First clamping end; 422. Second cylinder; 423. Third cylinder; 43. Connecting seat; 44. Fifth cylinder; 45. First connecting plate; 46. Second connecting plate; 50. Base; 60. Transport track; 70. Processing station. DETAILED DESCRIPTION

[0028] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present application, but are not intended to limit the scope of the present application. The present application may be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.

[0029] The present application provides these embodiments to make this application thorough and complete, and to fully express the scope of this application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0030] It should be noted that, in the description of this application, unless otherwise specified, "plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are intended solely to facilitate the description of this application and simplify the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] In addition, the terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the word include the elements listed after the word, and do not exclude the possibility of other elements being included.

[0032] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0033] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0035] like Figures 1 to 4 As shown, in some exemplary embodiments of the present application, a loading and unloading mechanism is provided for the transfer of a material tray 10, which mainly includes: a transport component 20, a limiting component 30 and a stacking and splitting component 40. The transport component 20 includes a connected carrier 21 and a displacement structure 22. The carrier 21 can slide along a first direction, and the carrier 21 abuts against the bottom of the material tray 10 to drive the material tray 10 to slide; the limiting component 30 includes a fixed limiting platform 31, and the limiting platform 31 can form a limit with the bottom circumference of the material tray 10; the stacking and splitting component 40 includes a first clamping structure 41, a second clamping structure 42 and a connecting seat 43. The first clamping structure 41 and the connecting seat 43 can be slidably connected along the first direction, and the second clamping structure 42 and the first clamping structure 41 can be slidably connected along the first direction. The first clamping structure 41 and the second clamping structure 42 are both in a clamping state with the side of the material tray 10.

[0036] The limiting platform 31 of the limiting assembly 30 is set so that the carrier 21 of the transport assembly 20 can directly load and unload materials in cooperation with the limiting platform 31 under the transportation of its displacement structure 22. This can save the coordination time between the stacking and splitting assembly 40. After that, the first clamping structure 41 and the second clamping structure 42 of the stacking and splitting assembly 40 further cooperate with the limiting platform 31 to achieve the stacking or splitting of the material tray 10. In this way, the carrier 21 and the displacement structure 22 do not need to participate in the stacking or splitting process, and the time for stacking or splitting is used to transport the carrier 21, saving the transfer process and time. The present application effectively solves the problem of insufficient coordination between the existing loading and unloading mechanisms, which leads to low transportation efficiency of the production line.

[0037] like Figures 1 to 4 As shown, in some exemplary embodiments of the present application, the loading and unloading mechanism further includes a base 50, the limiting platform 31 and the connecting seat 43 are both fixedly connected to the base 50, the first clamping structure 41 is a fixed fixture, and the limiting assembly 30 is located on the side of the first clamping structure 41 away from the base 50. The provision of the fixed fixture can reduce the use of power elements, so that the first clamping structure 41 only needs to be extended and retracted from a side position in a direction close to or away from the tray 10, resulting in a more compact structure, gradually reducing equipment costs, and more convenient assembly.

[0038] It should be noted that this application mainly focuses on loading and unloading the battery cells in the material tray 10. The material trays can be stacked to form a stack of materials. Applying the loading and unloading mechanism in the above embodiment, the stacking process is as follows: the displacement structure 22 drives the carrier 21 to move from different workstations, and the material tray 10 is located above the limit platform 31. When the limit platform 31 can correspond to the bottom circumference of the material tray 10, the displacement structure 22 drives the material tray 10 to fall and be placed on the limit platform 31. The carrier 21 continues to fall and separates from the material tray 10, leaving the stacking or splitting workstation. After the carrier 21 leaves, the first clamping structure 41 of the stacking and splitting assembly 40 is located below the material tray 10, and the second clamping structure 42 is located above the material tray 10. The first clamping structure 41 slides along the first direction, which is specifically the vertical direction, and is stacked and combined with the material tray 10 on the second clamping structure 42. At this time, the material tray 10 is separated from the second clamping structure 42 and pressed on the first clamping structure 41. The second clamping structure 42 is separated from the side of the material tray 10 and slides in a direction close to the first clamping structure 41, so that the second clamping structure 42 is located at the bottom of all the material trays 10, and then enters a clamping state with the side of the bottom material tray 10 to complete the stacking.

[0039] The splitting process is as follows: the second clamping structure 42 falls, causing the stacked trays 10 to engage with the limiting platform 31 or the first clamping structure 41. At this time, the second clamping structure 42 first separates from the trays 10 and slides in the first direction, with its clamping end located between the first and second trays 10 at the bottom. This allows the second clamping structure 42 to enter a clamping state with the side of the second tray 10 and slide in the first direction, separating the first and second trays 10, completing the splitting process. Subsequently, the carrier 21 is located at the bottom of the tray 10 and abuts against the tray 10 in the first direction, separating it from the limiting platform 31 or the first clamping structure 41, and then transported by the displacement structure 22.

[0040] In the above-mentioned stacking and splitting process, the stacking and splitting processes are carried out before and after the carrier 21 separates the material tray 10, without the participation of the carrier 21. Displacement and transportation can be carried out during stacking and splitting, and the time utilization rate is high. Compared with traditional stacking and splitting solutions, it can save a lot of time and improve the specific time consumption of loading and unloading.

[0041] like Figures 1 to 4 As shown, in some exemplary embodiments, the displacement structure 22 may be a sliding track with a slider slidably arranged on the track to facilitate the transport of the carrier. A fourth air cylinder 23 is disposed between the carrier 21 and the slider. This fourth air cylinder 23 can raise and lower the carrier 21, facilitating the raising and lowering of the tray 10 and cooperating with the position limiting platform 31. The fourth air cylinder 23 facilitates pushing, utilizing an air source output. This air source maintains a resistive push action, achieving accurate positioning.

[0042] like Figure 1 and Figure 2 As shown, in some exemplary embodiments, there are multiple limiting platforms 31, and the multiple limiting platforms 31 form a limiting space, which is adapted to the material tray 10. The limiting platforms 31 can form a limit along the first direction to completely hold the material tray 10 and prevent the material tray 10 from slipping.

[0043] The material tray 10 has a roughly square structure, and the corresponding limiting platform 31 includes a first limiting wall 311 and a second limiting wall 312 set at right angles, which form a right-angled limiting space. The first limiting wall 311 and the second limiting wall 312 are both perpendicularly connected on a plane to adapt to the peripheral shape of the material tray 10.

[0044] Further, if Figure 1 and Figure 2 As shown, in some exemplary embodiments, the limiting assembly 30 is provided with a plurality of push structures 32 corresponding one to each limiting platform 31, and each push structure 32 is engaged with the side of the tray 10. The push structures 32 are provided to engage with the side of the tray 10 within the limiting space, thereby facilitating the positioning of the tray 10.

[0045] It is understandable that a certain clearance is required between the tray 10 and the limiting platform 31 to prevent the limiting platform 31 from directly clamping the tray 10, which would prevent the tray 10 from accurately matching and stacking with other trays 10. Therefore, the pushing direction of the pushing structure 32 is perpendicular to the sliding direction of the displacement structure 22. The displacement structure 22 can achieve positioning in its sliding direction, while the pushing direction of the pushing structure 32 is perpendicular to it to achieve positioning in this direction. The two cooperate with each other to achieve complete positioning of the tray 10.

[0046] like Figure 1 and Figure 2 As shown, in some exemplary embodiments of the present application, the push structure 32 includes a first cylinder 321 and a push member 322. The push member 322 is connected to the output end of the first cylinder 321 and is arranged perpendicular to the side of the tray 10. The arrangement of the first cylinder 321 facilitates pushing, and the air source output can be used. The air source can maintain the push effect and achieve accurate positioning.

[0047] The push member 322 specifically includes a push end of a strip structure, and a corresponding limiting groove 313 is provided on the second limiting wall 312. The two cooperate with each other, so that the output direction of the push member 322 is limited by the limiting groove 313, thereby achieving a more precise limiting effect.

[0048] It should be noted that the connecting seat 43 is composed of multiple connecting plates, the limit platform 31 is fixedly connected to one of the connecting plates, and the first cylinder 321 is fixed to the side of the limit platform 31 away from the base 50. Such a setting will not interfere with the operation of the stacking and splitting assembly 40, and the structure is simple and reliable.

[0049] like Figures 1 to 4 As shown, in some exemplary embodiments of the present application, the second clamping structure 42 includes a first clamping end 421, a second cylinder 422 and a third cylinder 423. The first clamping end 421 is connected to the output end of the second cylinder 422, the second cylinder 422 is connected to the output end of the third cylinder 423, the output direction of the third cylinder 423 is the first direction, and the third cylinder 423 is fixedly connected to the connecting seat 43. The second cylinder 422 and the third cylinder 423 are configured to allow the first clamping end 421 to slide along the first direction and in a direction perpendicular to the first direction, thereby achieving multiple position matching of the material tray 10. The configuration principle of the second cylinder 422 and the third cylinder 423 is consistent with that of the first cylinder 321, which facilitates pushing. The air source output can be used, and the air source can maintain a push effect to achieve accurate positioning.

[0050] Furthermore, the first cylinder 321 , the second cylinder 422 , the third cylinder 423 and the fourth cylinder 23 are all supplied with gas from one gas source and are individually controlled and outputted through valves, thereby streamlining the structure and saving structural costs.

[0051] like Figures 1 to 4 As shown, in some exemplary embodiments of the present application, the connecting base 43 includes a plurality of symmetrically arranged second clamping structures 42, and the first clamping structure 41 is located between two adjacent second clamping structures 42. The plurality of second clamping structures 42 can clamp the material tray 10 from multiple directions to ensure that the material tray 10 remains stable during the stacking and splitting process, which facilitates the stacking and splitting process.

[0052] like Figures 1 to 4 As shown, in some exemplary embodiments of the present application, the first clamping structure 41 includes a second clamping end 411, and the carrier 21 is provided with a first avoidance area 211 and a second avoidance area 212. Along the first direction, the second clamping end 411 partially overlaps with the first avoidance area 211, and the first clamping end 421 partially overlaps with the second avoidance area 212 when extended. The projection of the material tray 10 along the first direction covers the first avoidance area 211 and the second avoidance area 212.

[0053] The provision of the first avoidance area 211 and the second avoidance area 212 can provide a clearance area for the first clamping end 421 and the second clamping end 411 so that the material tray 10 can be stabilized on the first clamping end 421 and the second clamping end 411 .

[0054] The first clamping end 421 has a longer span and can adapt to the side of the tray 10 in a certain area, so that it can hold the tray 10 and is suitable for transfer purposes. The second clamping end 411 can hold the tray 10 from the surrounding area and completely fix it, which is suitable for temporary storage and stacking purposes.

[0055] A fifth cylinder 44 is fixed on a connecting plate body of the connecting seat 43, and the output end of the fifth cylinder 44 is connected to a first connecting plate 45 and a second connecting plate 46. The first connecting plate 45 is arranged parallel to the material tray 10, and the first clamping end 421 is fixed to the side of the first connecting plate 45 close to the material tray 10 to facilitate the cooperation with the material tray 10.

[0056] The second connecting plate 46 has a longer span, so that the two third cylinders 423 located at both ends of the first clamping end 421 are fixed on the side facing the first connecting plate 45, and the second cylinder 422 is connected to the third cylinder 423. The second clamping end 411 includes a hook-shaped structure for adapting to the bottom of the material tray 10, so that it is convenient to extend toward the material tray 10 to form a limit.

[0057] like Figures 1 to 4As shown, in some exemplary embodiments of the present application, the carrier 21 includes a supporting plate 213 and a plurality of limiting plates 214, and each limiting plate 214 is fixedly connected to the supporting plate 213 to form a placement cavity for the material tray 10, and a first avoidance area 211 or a second avoidance area 212 is formed between adjacent limiting plates 214.

[0058] The supporting plate 213 is arranged to bear the weight of the material tray 10, and the limiting plate 214 partially extends outward along the circumference of the supporting plate 213, and a first avoidance area 211 or a second avoidance area 212 is formed between multiple limiting plate bodies 214. The limiting plate 214 is partially perpendicular to the supporting plate 213 and is used to form a placement cavity for the material tray 10. This helps maintain the stability of the material tray 10 during transportation and facilitates positioning for stacking or splitting.

[0059] Second, as Figure 5 and Figure 6 As shown, some exemplary embodiments of the present application further provide a production line comprising a transmission track 60 and multiple loading and unloading mechanisms as described above. The transmission track 60 connects the displacement structures 22 of adjacent loading and unloading mechanisms. The beneficial effects of the loading and unloading mechanisms are described in the above embodiments and will not be further elaborated here. The loading and unloading mechanisms are disposed at loading and unloading stations, and the transmission track 60 connects the processing station 70 with the loading and unloading stations.

[0060] By applying the loading and unloading mechanism in the above embodiment, during the operation of the loading and unloading mechanism, that is, during the stacking and splitting of the material trays, the carrier 21 and the displacement structure 22 of the transport component 20 do not need to participate in the stacking or splitting process, and the stacking or splitting time is used to transfer the carrier 21, which can effectively save the transfer process and time, improve the coordination between the loading and unloading mechanisms, and thus improve the transfer efficiency of the production line.

[0061] The production line of the present application can be applied to the production or transportation of photovoltaic cells. The material trays 10 are stacked and disassembled by the loading and unloading mechanism. This not only effectively optimizes the packaging and transportation method of the transfer trays 10, but also reduces the time that the material trays 10 are loaded and unloaded during the transfer process and occupy the transport platform 21, significantly improving the transfer efficiency and achieving simple and rapid docking between various processes. While having a compact structure, it can also avoid unnecessary damage to the cells during the transfer process and improve the yield rate.

[0062] So far, the various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0063] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A loading and unloading mechanism for transporting a tray (10), characterized in that: include: A transport assembly (20) comprises a connected carrier (21) and a displacement structure (22), wherein the carrier (21) can slide along a first direction, and the carrier (21) abuts against the bottom of the material tray (10) to drive the material tray (10) to slide; A limiting assembly (30) includes a fixed limiting platform (31), wherein the limiting platform (31) can form a limiting position with the bottom circumference of the material tray (10); A stacking and splitting assembly (40) comprises a first clamping structure (41), a second clamping structure (42) and a connecting seat (43), wherein the first clamping structure (41) and the connecting seat (43) are slidably connected along a first direction, and the second clamping structure (42) and the first clamping structure (41) are slidably connected along the first direction, and both the first clamping structure (41) and the second clamping structure (42) are in a clamping state with the side of the material tray (10).

2. The loading and unloading mechanism according to claim 1, characterized in that: The loading and unloading mechanism further comprises a base (50), the limiting platform (31) and the connecting seat (43) are both fixedly connected to the base (50), the first clamping structure (41) is a fixing fixture, and the limiting assembly (30) is located on a side of the first clamping structure (41) away from the base (50).

3. The loading and unloading mechanism according to claim 2, characterized in that: There are a plurality of the limiting platforms (31), and the plurality of limiting platforms (31) form a limiting space, and the limiting space is adapted to the material tray (10).

4. The loading and unloading mechanism according to claim 3, characterized in that: The limiting assembly (30) is provided with a plurality of push structures (32) corresponding one-to-one to each limiting platform (31), and each push structure (32) is in a matching state with the side of the material tray (10).

5. The loading and unloading mechanism according to claim 4, characterized in that: The push structure (32) comprises a first cylinder (321) and a push member (322); the push member (322) is connected to the output end of the first cylinder (321) and is arranged perpendicular to the side of the material tray (10).

6. The loading and unloading mechanism according to claim 2, characterized in that: The second clamping structure (42) comprises a first clamping end (421), a second cylinder (422) and a third cylinder (423); the first clamping end (421) is connected to the output end of the second cylinder (422); the second cylinder (422) is connected to the output end of the third cylinder (423); the output direction of the third cylinder (423) is the first direction; and the third cylinder (423) is fixedly connected to the connecting seat (43).

7. The loading and unloading mechanism according to claim 6, characterized in that: The connecting seat (43) comprises a plurality of symmetrically arranged second clamping structures (42), and the first clamping structure (41) is located between two adjacent second clamping structures (42).

8. The loading and unloading mechanism according to claim 7, characterized in that: The first clamping structure (41) includes a second clamping end (411), and the carrier (21) is provided with a first avoidance area (211) and a second avoidance area (212). Along the first direction, the second clamping end (411) partially overlaps with the first avoidance area (211), and the first clamping end (421) When extended, it partially overlaps with the second avoidance area (212), and the projection of the material tray (10) along the first direction covers the first avoidance area (211) and the second avoidance area (212).

9. The loading and unloading mechanism according to claim 8, characterized in that: The carrier (21) comprises a carrier plate (213) and a plurality of limit plates (214), each of the limit plates (214) They are respectively fixedly connected to the supporting plate body (213) to form a placement cavity for the material tray (10), and a first avoidance area (211) or a second avoidance area (212) is formed between adjacent limiting plate bodies (214).

10. A production line, characterized in that: The production line comprises a transmission track (60) and a plurality of loading and unloading mechanisms according to any one of claims 1 to 9, wherein the transmission track (60) is respectively connected to the displacement structures (22) of adjacent loading and unloading mechanisms.

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