Tray mechanism capable of adjusting clamping stroke and self-adapting to thickness of small book

By designing an adjustable clamping stroke pallet mechanism, combined with springs and reinforcing ribs, the problem of adapting the pallet mechanism to different notebook thicknesses was solved, achieving stable clamping and precise positioning, and improving the applicability and safety of the pallet mechanism.

CN121990258APending Publication Date: 2026-05-08IFLYTEK INTELLIGENT TECHNOLOGY (SUZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
IFLYTEK INTELLIGENT TECHNOLOGY (SUZHOU) CO LTD
Filing Date
2026-02-09
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing pallet mechanisms have a single size, making it difficult to adapt to different sizes. They are also unstable in clamping and prone to displacement or falling off during high-speed transport.

Method used

The tray mechanism with adjustable clamping stroke is adopted. Through the cooperation of components such as compression springs, equal height bolts and tension springs, combined with high-strength reinforcing ribs and elastic buffer protection mechanism, it can achieve adaptive clamping for small book thicknesses, ensuring stable clamping force and positional accuracy.

Benefits of technology

The pallet mechanism achieves adaptability, is compatible with small pallets of different widths, has stable clamping force, reduces the risk of displacement and detachment during high-speed transport, and improves the convenience and accuracy of operation.

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Abstract

The invention discloses a tray mechanism with adjustable clamping stroke and self-adaption to the thickness of a small book, which comprises a tray bottom plate, and a first horizontal clamping jaw mounting mechanism and a third horizontal clamping jaw mounting mechanism are arranged on one side of the upper end of the tray bottom plate; a second horizontal clamping jaw mounting mechanism and a fourth horizontal clamping jaw mounting mechanism are arranged on the other side of the upper end of the tray bottom plate, the second horizontal clamping jaw mounting mechanism and the first horizontal clamping jaw mounting mechanism are symmetrically arranged, and the fourth horizontal clamping jaw mounting mechanism and the third horizontal clamping jaw mounting mechanism are symmetrically arranged; a first vertical lifting mechanism and a second vertical lifting mechanism are arranged in the middle of the upper end of the tray bottom plate. According to the tray mechanism capable of adjusting the clamping stroke and self-adapting to the thicknesses of the small books, the stroke of the horizontal clamping mechanism is adjustable, the tray mechanism can be compatible with the small books with different widths, and the stable clamping force can be guaranteed through matched use of the compression springs, the equal-height bolts, the extension springs and other parts.
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Description

Technical Field

[0001] This invention relates to the field of pallet technology, and in particular to a pallet mechanism with adjustable clamping stroke and adaptive to small pallet thickness. Background Technology

[0002] Pallet mechanisms are an important component of automated logistics systems, mainly used for pallet handling, conveying, and loading / unloading. Pallet handling systems are key subsystems of intelligent handling systems. Modular pallet conveyor systems use aluminum profiles as the main support, which has high precision and high wear resistance, and are applied in the field of automation. With the continuous development of technology, people's requirements for pallet mechanisms are also getting higher and higher.

[0003] Existing pallet mechanisms have certain drawbacks in use. First, existing pallet mechanisms are limited to a single size, making it difficult to adapt to different sizes of books. They also lack an adaptive structure, requiring pallet replacement and adjustments when changing models, which is inconvenient for users. Furthermore, existing pallet mechanisms have unstable clamping and load-bearing capabilities, which may lead to displacement or detachment during high-speed transport, negatively impacting actual use. Therefore, we propose a pallet mechanism with adjustable clamping stroke and adaptive thickness to smaller books. Summary of the Invention

[0004] Technical problem to be solved: In view of the shortcomings of the prior art, the present invention provides a tray mechanism with adjustable clamping stroke and adaptive to the thickness of small notebooks. The horizontal clamping mechanism has an adjustable stroke, which can be compatible with small notebooks of different widths. Through the use of components such as compression springs, equal height bolts, and tension springs, the clamping force can be kept stable, which can effectively solve the problems in the background art.

[0005] Technical Solution: To achieve the above objectives, the technical solution adopted by the present invention is as follows: a pallet mechanism with adjustable clamping stroke and adaptive to small book thickness, comprising a pallet base plate, wherein a first horizontal clamping claw mounting mechanism and a third horizontal clamping claw mounting mechanism are provided on one side of the upper end of the pallet base plate, and a second horizontal clamping claw mounting mechanism and a fourth horizontal clamping claw mounting mechanism are provided on the other side of the upper end of the pallet base plate, wherein the second horizontal clamping claw mounting mechanism and the first horizontal clamping claw mounting mechanism are symmetrically arranged, and the fourth horizontal clamping claw mounting mechanism and the third horizontal clamping claw mounting mechanism are symmetrically arranged, wherein a first vertical lifting mechanism and a second vertical lifting mechanism are provided in the middle of the upper end of the pallet base plate, wherein the first vertical lifting mechanism is located between the first horizontal clamping claw mounting mechanism and the second horizontal clamping claw mounting mechanism, and the second vertical lifting mechanism is located between the third horizontal clamping claw mounting mechanism and the fourth horizontal clamping claw mounting mechanism, and assembly blocks are positioned at the four corners of the upper end of the pallet base plate; The first horizontal gripper mounting mechanism, the third horizontal gripper mounting mechanism, the fourth horizontal gripper mounting mechanism, and the second horizontal gripper mounting mechanism all include a tension spring mechanism, a horizontal gripper assembly, a slide rail, a slide base, and a rising limit plate. The slide base is mounted on the slide rail, the horizontal gripper assembly is positioned at the upper end of the slide base, the rising limit plate is fixed inside the horizontal gripper assembly, and the tension spring mechanism is connected to the slide base. Both the first and second vertical lifting mechanisms include a vertical lifting plate, a connecting component, and a compression spring mechanism. The compression spring mechanism is installed at both ends of the bottom of the vertical lifting plate, and the connecting component is disposed between the compression spring mechanism and the vertical lifting plate.

[0006] As a preferred technical solution of this application, a high-strength reinforcing rib assembly is integrally positioned inside the pallet bottom plate. The high-strength reinforcing rib assembly includes an upper reinforcing rib, a first cross-type fixing assembly, a middle reinforcing rib, a second cross-type fixing assembly, and a lower reinforcing rib. The middle reinforcing rib is positioned between the upper and lower reinforcing ribs. The second cross-type fixing assembly is located inside the middle reinforcing rib. The first cross-type fixing assembly is located inside the upper and lower reinforcing ribs.

[0007] As a preferred technical solution of this application, each of the four corners of the pallet bottom plate is provided with an elastic buffer protection mechanism. The elastic buffer protection mechanism includes an elastic buffer plate, a buffer cotton, a damper, a buffer spring, and a positioning seat. The damper and the buffer spring are both disposed on the inner side of the positioning seat, and the buffer cotton is positioned on the surface of the elastic buffer plate.

[0008] As a preferred technical solution of this application, the first horizontal gripper mounting mechanism and the second horizontal gripper mounting mechanism perform clamping movements by translation, and the third horizontal gripper mounting mechanism and the fourth horizontal gripper mounting mechanism perform clamping movements by translation. The first vertical lifting mechanism is positioned by lifting and cooperating with the first horizontal gripper mounting mechanism and the second horizontal gripper mounting mechanism, and the second vertical lifting mechanism is positioned by lifting and cooperating with the third horizontal gripper mounting mechanism and the fourth horizontal gripper mounting mechanism.

[0009] As a preferred technical solution of this application, the tension spring mechanism drives the slide to move horizontally on the slide rail, the slide drives the horizontal gripper assembly to move horizontally, and the rising limit plate is fixed to the horizontal gripper assembly by bolts.

[0010] As a preferred technical solution of this application, the compression spring mechanism drives the connecting assembly to move up and down, the connecting assembly is fixed to the vertical lifting plate by bolts, and the connecting assembly drives the vertical lifting plate to move up and down.

[0011] As a preferred technical solution of this application, the upper reinforcing rib, the middle reinforcing rib and the lower reinforcing rib are integrally formed by die casting, the middle reinforcing rib and the second cross-type fixing component are integrally formed by die casting, and the upper reinforcing rib and the first cross-type fixing component are integrally formed by die casting.

[0012] As a preferred technical solution of this application, the elastic buffer plate moves elastically between the damper, the buffer spring and the tray bottom plate. The damper and the buffer spring are both installed through positioning seats, and the elastic buffer plate and the buffer cotton are fixed by gluing.

[0013] Beneficial Effects: Compared with the prior art, the present invention provides a tray mechanism with adjustable clamping stroke and adaptive thickness of small notebooks, which has the following beneficial effects: The horizontal clamping mechanism has an adjustable stroke, which can accommodate notebooks of different widths. Through the cooperation of compression springs, equal-height bolts, tension springs and other parts, the clamping force can be kept stable. The two lifting plates can be raised and lowered vertically by themselves. Through cooperation with the lifting limit gripper, the notebook can be stably clamped and supported on the lifting plate after it is opened, and it can be clamped to the same height every time. The four gripper arms open and close horizontally in pairs. Through cooperation with the gripper arm limit mechanism, notebooks of different sizes can be clamped to the same position. Anti-slip tape is attached to the lifting plate to enhance the stability of the notebook on the tray. All limit parts of the spring mechanism are made of polyurethane shock-absorbing material to reduce the impact when the mechanism closes and increase the accuracy of the notebook's position on the tray. The entire tray mechanism has a simple structure, is easy to operate, and has better performance than traditional methods. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a tray mechanism with adjustable clamping stroke and adaptive to small thickness according to the present invention.

[0015] Figure 2 This is a top view schematic diagram of a tray mechanism with adjustable clamping stroke and adaptive to small thickness according to the present invention.

[0016] Figure 3 This is a magnified structural diagram of point A in a tray mechanism with adjustable clamping stroke and adaptive to small thickness according to the present invention.

[0017] Figure 4 This is a schematic diagram of the internal structure of the pallet bottom plate in a pallet mechanism with adjustable clamping stroke and adaptive small thickness according to the present invention.

[0018] Figure 5 This is a schematic diagram of the high-strength reinforcing rib assembly in a tray mechanism with adjustable clamping stroke and adaptive to small thickness according to the present invention.

[0019] Figure 6 This is a magnified structural diagram of point B in a tray mechanism with adjustable clamping stroke and adaptive to small thickness according to the present invention.

[0020] In the diagram: 1. Pallet base plate; 2. Assembly block; 3. First horizontal gripper mounting mechanism; 4. Third horizontal gripper mounting mechanism; 5. Second vertical lifting mechanism; 6. Fourth horizontal gripper mounting mechanism; 7. First vertical lifting mechanism; 8. Second horizontal gripper mounting mechanism; 9. Vertical lifting plate; 10. Connecting assembly; 11. Compression spring mechanism; 12. Lifting limit plate; 13. Tension spring mechanism; 14. Horizontal gripper assembly; 15. Slide rail; 16. Slide seat; 17. High-strength reinforcing rib assembly; 18. Elastic buffer protection mechanism; 19. Upper reinforcing rib; 20. First cross-type fixing assembly; 21. Middle reinforcing rib; 22. Second cross-type fixing assembly; 23. Lower reinforcing rib; 24. Elastic buffer plate; 25. Buffer cotton; 26. Damper; 27. Buffer spring; 28. Positioning seat. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are some embodiments of the present invention, but not all embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] like Figure 1-6 As shown, a pallet mechanism with adjustable clamping stroke and adaptive to small book thickness includes a pallet base plate 1. A first horizontal gripper mounting mechanism 3 and a third horizontal gripper mounting mechanism 4 are provided on one side of the upper end of the pallet base plate 1. A second horizontal gripper mounting mechanism 8 and a fourth horizontal gripper mounting mechanism 6 are provided on the other side of the upper end of the pallet base plate 1. The second horizontal gripper mounting mechanism 8 and the first horizontal gripper mounting mechanism 3 are symmetrically arranged, and the fourth horizontal gripper mounting mechanism 6 and the third horizontal gripper mounting mechanism 4 are symmetrically arranged. A first vertical lifting mechanism 7 and a second vertical lifting mechanism 5 are provided in the middle of the upper end of the pallet base plate 1. The first vertical lifting mechanism 7 is located between the first horizontal gripper mounting mechanism 3 and the second horizontal gripper mounting mechanism 8, and the second vertical lifting mechanism 5 is located between the third horizontal gripper mounting mechanism 4 and the fourth horizontal gripper mounting mechanism 6. Assembly blocks 2 are positioned at the four corners of the upper end of the pallet base plate 1. The first horizontal gripper mounting mechanism 3, the third horizontal gripper mounting mechanism 4, the fourth horizontal gripper mounting mechanism 6, and the second horizontal gripper mounting mechanism 8 all include a tension spring mechanism 13, a horizontal gripper assembly 14, a slide rail 15, a slide block 16, and a rising limit plate 12. The slide block 16 is mounted on the slide rail 15, the horizontal gripper assembly 14 is positioned at the upper end of the slide block 16, the rising limit plate 12 is fixed inside the horizontal gripper assembly 14, and the tension spring mechanism 13 is connected to the slide block 16. Both the first vertical lifting mechanism 7 and the second vertical lifting mechanism 5 include a vertical lifting plate 9, a connecting component 10 and a compression spring mechanism 11. The compression spring mechanism 11 is installed at both ends of the bottom of the vertical lifting plate 9, and the connecting component 10 is disposed between the compression spring mechanism 11 and the vertical lifting plate 9. The first horizontal gripper mounting mechanism 3 and the second horizontal gripper mounting mechanism 8 perform clamping movements through translation. The third horizontal gripper mounting mechanism 4 and the fourth horizontal gripper mounting mechanism 6 perform clamping movements through translation. The first vertical lifting mechanism 7 performs positioning by lifting and cooperating with the first horizontal gripper mounting mechanism 3 and the second horizontal gripper mounting mechanism 8. The second vertical lifting mechanism 5 performs positioning by lifting and cooperating with the third horizontal gripper mounting mechanism 4 and the fourth horizontal gripper mounting mechanism 6. The tension spring mechanism 13 drives the slide block 16 to move horizontally on the slide rail 15, and the slide block 16 drives the horizontal gripper assembly 14 to move horizontally. The rising limit plate 12 and the horizontal gripper assembly 14 are fixed together by bolts. The compression spring mechanism 11 drives the connecting assembly 10 to move up and down. The connecting assembly 10 is fixed to the vertical lifting plate 9 by bolts, and the connecting assembly 10 drives the vertical lifting plate 9 to move up and down.

[0025] The horizontal clamping mechanism has an adjustable stroke, making it compatible with small notebooks of different widths. Through the combined use of components such as compression springs, equal-height bolts, and tension springs, it can ensure stable clamping force.

[0026] The tray base plate 1 has a high-strength reinforcing rib assembly 17 integrally positioned inside. The high-strength reinforcing rib assembly 17 includes an upper reinforcing rib 19, a first cross-type fixing assembly 20, a middle reinforcing rib 21, a second cross-type fixing assembly 22, and a lower reinforcing rib 23. The middle reinforcing rib 21 is positioned between the upper reinforcing rib 19 and the lower reinforcing rib 23. The second cross-type fixing assembly 22 is located inside the middle reinforcing rib 21. The first cross-type fixing assembly 20 is located inside the upper reinforcing rib 19 and the lower reinforcing rib 23. The upper reinforcing rib 19, the middle reinforcing rib 21, and the lower reinforcing rib 23 are integrally formed by die casting. The middle reinforcing rib 21 and the second cross-type fixing assembly 22 are integrally formed by die casting. The upper reinforcing rib 19 and the first cross-type fixing assembly 20 are integrally formed by die casting.

[0027] Elastic buffer protection mechanisms 18 are positioned at the four corners of the pallet bottom plate 1. Each elastic buffer protection mechanism 18 includes an elastic buffer plate 24, a buffer cotton 25, a damper 26, a buffer spring 27, and a positioning seat 28. The damper 26 and the buffer spring 27 are both located inside the positioning seat 28. The buffer cotton 25 is positioned on the surface of the elastic buffer plate 24. The elastic buffer plate 24 moves elastically between the pallet bottom plate 1 and the damper 26 and the buffer spring 27. The damper 26 and the buffer spring 27 are both installed through the positioning seat 28. The elastic buffer plate 24 and the buffer cotton 25 are fixed by gluing.

[0028] Working principle: This invention includes a tray base plate 1, an assembly block 2, a first horizontal gripper mounting mechanism 3, a third horizontal gripper mounting mechanism 4, a second vertical lifting mechanism 5, a fourth horizontal gripper mounting mechanism 6, a first vertical lifting mechanism 7, a second horizontal gripper mounting mechanism 8, a vertical lifting plate 9, a connecting assembly 10, a compression spring mechanism 11, a rising limit plate 12, a tension spring mechanism 13, a horizontal gripper assembly 14, a slide rail 15, a slide seat 16, a high-strength reinforcing rib assembly 17, an elastic buffer protection mechanism 18, an upper reinforcing rib 19, a first cross-type fixing assembly 20, a middle reinforcing rib 21, a second cross-type fixing assembly 22, a lower reinforcing rib 23, an elastic buffer plate 24, a buffer cotton 25, a damper 26, a buffer spring 27, and a positioning seat 28. The horizontal clamping mechanism has an adjustable stroke, which can accommodate small notebooks of different widths. Through the combined use of compression springs, equal-height bolts, tension springs, and other parts, the clamping force can be ensured to be stable.

[0029] The two lifting plates can be raised and lowered vertically independently. With the cooperation of the lifting limit gripper, the notebook can be stably clamped and supported on the lifting plate after it is opened, and it can be clamped to the same height each time. The four gripper arms open and close horizontally in pairs, and can clamp notebooks of different sizes into the same position by cooperating with the gripper arm limiting mechanism. The lifting platform is covered with anti-slip tape to enhance the stability of the notebook on the tray; All limit components of the spring mechanism are made of polyurethane damping material to reduce the impact when the mechanism closes and increase the accuracy of the notebook's position on the tray.

[0030] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A pallet mechanism with adjustable clamping stroke and adaptive to small book thickness, comprising a pallet base plate (1), characterized in that: The upper side of the pallet bottom plate (1) is provided with a first horizontal gripper mounting mechanism (3) and a third horizontal gripper mounting mechanism (4), and the other side of the upper end of the pallet bottom plate (1) is provided with a second horizontal gripper mounting mechanism (8) and a fourth horizontal gripper mounting mechanism (6). The second horizontal gripper mounting mechanism (8) and the first horizontal gripper mounting mechanism (3) are symmetrically arranged, and the fourth horizontal gripper mounting mechanism (6) and the third horizontal gripper mounting mechanism (4) are symmetrically arranged. The upper middle part of the pallet bottom plate (1) is provided with a first vertical lifting mechanism (7) and a second vertical lifting mechanism (5). The first vertical lifting mechanism (7) is located between the first horizontal gripper mounting mechanism (3) and the second horizontal gripper mounting mechanism (8), and the second vertical lifting mechanism (5) is located between the third horizontal gripper mounting mechanism (4) and the fourth horizontal gripper mounting mechanism (6). Assembly blocks (2) are positioned at the four corners of the upper end of the pallet bottom plate (1). The first horizontal gripper mounting mechanism (3), the third horizontal gripper mounting mechanism (4), the fourth horizontal gripper mounting mechanism (6), and the second horizontal gripper mounting mechanism (8) all include a tension spring mechanism (13), a horizontal gripper assembly (14), a slide rail (15), a slide block (16), and a rising limit plate (12). The slide block (16) is mounted on the slide rail (15), the horizontal gripper assembly (14) is positioned at the upper end of the slide block (16), the rising limit plate (12) is fixed inside the horizontal gripper assembly (14), and the tension spring mechanism (13) is connected to the slide block (16). Both the first vertical lifting mechanism (7) and the second vertical lifting mechanism (5) include a vertical lifting plate (9), a connecting component (10) and a compression spring mechanism (11). The compression spring mechanism (11) is installed at both ends of the bottom of the vertical lifting plate (9), and the connecting component (10) is disposed between the compression spring mechanism (11) and the vertical lifting plate (9).

2. The tray mechanism with adjustable clamping stroke and adaptive to small book thickness according to claim 1, characterized in that: The tray base plate (1) has a high-strength reinforcing rib assembly (17) integrally positioned inside. The high-strength reinforcing rib assembly (17) includes an upper reinforcing rib (19), a first cross-type fixing assembly (20), a middle reinforcing rib (21), a second cross-type fixing assembly (22), and a lower reinforcing rib (23). The middle reinforcing rib (21) is positioned between the upper reinforcing rib (19) and the lower reinforcing rib (23). The second cross-type fixing assembly (22) is located inside the middle reinforcing rib (21). The first cross-type fixing assembly (20) is located inside the upper reinforcing rib (19) and the lower reinforcing rib (23).

3. The tray mechanism with adjustable clamping stroke and adaptive to small book thickness according to claim 1, characterized in that: The four corners of the tray bottom plate (1) are all equipped with elastic buffer protection mechanisms (18). The elastic buffer protection mechanism (18) includes an elastic buffer plate (24), a buffer cotton (25), a damper (26), a buffer spring (27), and a positioning seat (28). The damper (26) and the buffer spring (27) are both located inside the positioning seat (28), and the buffer cotton (25) is positioned on the surface of the elastic buffer plate (24).

4. The tray mechanism with adjustable clamping stroke and adaptive to small book thickness according to claim 1, characterized in that: The first horizontal gripper mounting mechanism (3) and the second horizontal gripper mounting mechanism (8) perform clamping movements by translation. The third horizontal gripper mounting mechanism (4) and the fourth horizontal gripper mounting mechanism (6) perform clamping movements by translation. The first vertical lifting mechanism (7) is positioned by lifting and cooperating with the first horizontal gripper mounting mechanism (3) and the second horizontal gripper mounting mechanism (8). The second vertical lifting mechanism (5) is positioned by lifting and cooperating with the third horizontal gripper mounting mechanism (4) and the fourth horizontal gripper mounting mechanism (6).

5. The tray mechanism with adjustable clamping stroke and adaptive to small book thickness according to claim 1, characterized in that: The tension spring mechanism (13) drives the slide (16) to move horizontally on the slide rail (15), and the slide (16) drives the horizontal gripper assembly (14) to move horizontally. The rising limit plate (12) and the horizontal gripper assembly (14) are fixed together by bolts.

6. The tray mechanism with adjustable clamping stroke and adaptive to small book thickness according to claim 1, characterized in that: The compression spring mechanism (11) drives the connecting assembly (10) to move up and down. The connecting assembly (10) is fixed to the vertical lifting plate (9) by bolts, and the connecting assembly (10) drives the vertical lifting plate (9) to move up and down.

7. A tray mechanism with adjustable clamping stroke and adaptive to small book thickness according to claim 2, characterized in that: The upper reinforcing rib (19), the middle reinforcing rib (21) and the lower reinforcing rib (23) are integrally formed by die casting. The middle reinforcing rib (21) and the second cross-type fixing component (22) are integrally formed by die casting. The upper reinforcing rib (19) and the first cross-type fixing component (20) are integrally formed by die casting.

8. A tray mechanism with adjustable clamping stroke and adaptive to small book thickness according to claim 3, characterized in that: The elastic buffer plate (24) moves elastically between the damper (26), the buffer spring (27) and the tray bottom plate (1). The damper (26) and the buffer spring (27) are both installed through the positioning seat (28). The elastic buffer plate (24) and the buffer cotton (25) are fixed by gluing.