Plate turning assembly for microcrystal plate processing

By designing a flip plate assembly for microcrystal plate processing including base, turntable assembly, sliding seat, rotating assembly and clipping assembly, automatic flip of microcrystal plate is realized, solving the problems of traditional low efficiency of manual flip and high damage rate, and improving processing efficiency and yield rate.

CN222630395UActive Publication Date: 2025-03-18ZHONGSHAN HONGCANG ELECTRIC CO LTD
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Patent Information

Application Number
CN202421431834.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-21
Publication Date
2025-03-18
Estimated Expiration
2034-06-21

AI Technical Summary

Technical Problem

The traditional method of artificially flipping microcrystalline panels is inefficient and has high damage rate, which cannot meet the needs of modern production for large-sized microcrystalline panels.

Method used

A flip plate assembly for microcrystal plate processing is designed, including a base, a turntable assembly, a sliding seat, a rotating assembly and a clipping assembly, and the automatic flip of the microcrystal plate is achieved through the linkage assembly and the guide assembly.

Benefits of technology

Automatic flip of microcrystal plates is realized, processing efficiency is improved, microcrystal plate breakage caused by manual operation is reduced, and damage rate is reduced.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a plate turning assembly for microcrystal plate processing, which comprises a base, a turntable assembly connected to the base and capable of rotating relative to the base, a sliding seat connected to the base and capable of sliding along the base, and a rotating assembly connected to the sliding seat and capable of rotating relative to the sliding seat and moving along with the sliding seat when the sliding seat slides. The rotating assembly is connected with a clamping and sucking assembly which can clamp and suck a microcrystalline plate and can move along with the rotating assembly, and a guiding assembly which can drive the rotating assembly to turn over by 180 degrees when the sliding base slides up and down relative to the base is arranged between the rotating assembly and the rotating disc assembly. And a linkage assembly capable of driving the sliding seat to slide relative to the base when the turntable assembly rotates is arranged between the sliding seat and the turntable assembly. The utility model aims to overcome the problems in the prior art, and provides the plate overturning assembly for processing the microcrystalline plate, which can automatically overturn the microcrystalline plate, so that the application range of the plate overturning assembly for processing the microcrystalline plate is wider, and the waste is reduced.
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Description

Technical Field

[0001] The utility model relates to the field of microcrystalline plate processing, in particular to a flip plate component for microcrystalline plate processing. Background Art

[0002] With the continuous advancement of science and technology, microcrystalline boards have been widely used in electronic products such as microwave ovens. As the market demand for large-size microcrystalline boards grows, the traditional manual flipping method can no longer meet the needs of modern production due to its low efficiency and high damage rate.

[0003] The present invention is developed based on the above-mentioned shortcomings. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems of the prior art and provide a flip plate assembly for processing a microcrystalline plate which can automatically flip the microcrystalline plate, so that the application range of the flip plate assembly for processing a microcrystalline plate is wider and waste is reduced.

[0005] In order to achieve the above purpose, the utility model adopts the following scheme:

[0006] A flip plate assembly for processing microcrystalline plates, comprising: a base, a turntable assembly that can rotate relative to the base is connected to the base, a sliding seat that can slide along the base is also connected to the base, a rotating assembly that can rotate relative to the sliding seat and can move along with the sliding seat when the sliding seat slides is connected to the sliding seat, a clamping assembly that can clamp the microcrystalline plate and can follow the movement of the rotating assembly is connected to the rotating assembly, a guiding assembly is provided between the rotating assembly and the turntable assembly, which can drive the rotating assembly to flip 180° when the sliding seat slides up and down relative to the base, and a linkage assembly is provided between the sliding seat and the turntable assembly, which can drive the sliding seat to slide relative to the base when the turntable assembly rotates.

[0007] The clamping and suction assembly includes a connecting seat connected to the rotating assembly, the connecting seat is provided with a supporting surface capable of placing the microcrystalline board, the connecting seat is provided with a plurality of clamping and suction air nozzles capable of clamping and suctioning the microcrystalline board, and one side of the connecting seat is provided with a limiting piece capable of abutting against the end of the microcrystalline board.

[0008] The connecting seat is provided with a pushing assembly which can push the limiting part to slide relative to the connecting seat after the clamping and suction assembly is turned over 180 degrees.

[0009] The connecting seat is provided with a first slide groove, the first slide groove is connected to a slider that can slide along the first slide groove, the limit member is connected to the slider, the pushing assembly includes a first motor, the output shaft of the first motor is connected to a pushing wheel that can rotate with the first motor, the center of the pushing wheel deviates from the rotation axis of the output shaft, the pushing wheel is provided with a pushing surface that can push the slider to slide along the first slide groove, the connecting seat is also provided with a reset member that can slide back and forth relative to the reset member to push the slider to reset, and an elastic member that can push the reset member to slide is provided between the reset member and the connecting seat.

[0010] The connecting seat is provided with a protruding column, and the pushing wheel is provided with an arc-shaped groove in which the column can pass and move.

[0011] The guiding assembly comprises a connecting plate arranged on the base, the rotating assembly is provided with a roller, and the connecting plate is provided with a guiding groove in which the roller can move to make the rotating assembly flip.

[0012] The guide groove comprises a first straight groove section and a second straight groove section which are arranged on the connecting plate at an upper and lower interval. An arc section is arranged between the first straight groove section and the second straight groove section, which can guide the roller to rotate when the roller rotates and thus flip the rotating assembly.

[0013] The rotating assembly includes a first bearing connected to a sliding seat, an inner ring of the first bearing is provided with a rotating shaft, a fixed seat capable of rotating with the rotating shaft is connected to the rotating shaft, the clamping assembly is connected to the fixed seat, a rotating block is also provided at the end of the rotating shaft, a connecting column is provided on the rotating block which is arranged off the center, and the roller is connected to the connecting column.

[0014] The turntable assembly includes a turntable body, a rotating rod extending into the base is provided on one side of the turntable body close to the base, the rotating rod is rotatably connected to the base through a second bearing, the other end of the rotating rod is connected to a driven gear, a driving motor is also provided on the base, and the driving motor is provided with a driving gear capable of driving the driven gear to rotate.

[0015] The linkage assembly includes a first protrusion that is arranged away from the axis of the turntable body, a second protrusion is provided on the sliding seat, a connecting rod that can be rotatably connected to the first protrusion and the second protrusion is provided between the first protrusion and the second protrusion, and when the turntable body rotates, the first protrusion can drive the connecting rod to move upward and then drive the sliding seat to move relative to the base.

[0016] Compared with the existing technology, the utility model has the following advantages: when fixing a latex balloon, the utility model aligns the balloon head with the cup holder body, and then inserts the balloon tail from the open slot, and the balloon tail is gradually inserted into the first clamping position. When the balloon tail is long, pull the balloon tail and then fix the balloon tail at the second clamping position. If it is necessary to fix an aluminum mold balloon, the balloon head is aligned with the cup holder body, and then the balloon tail is passed from the inner wall of the cup holder body through the through slot to the outside of the cup holder body, and then the balloon tail is pulled and fixed at the second clamping position. The flip plate assembly for microcrystalline board processing of the utility model can not only be used for fixing latex balloons, but also for fixing aluminum mold balloons. One cup holder can adapt to two different balloons, with a wider range of uses and less waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the flip plate assembly for processing microcrystalline plates of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a clamping and sucking assembly and a pushing assembly in a flip plate assembly for processing microcrystalline plates of the utility model;

[0019] Figure 3 This is a state diagram of the clamping and suction components and the pushing components in the flip plate component for processing microcrystalline plates of the utility model when they are in use;

[0020] Figure 4 This is an exploded view of the flip plate assembly for processing microcrystalline panels of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the turntable assembly in the flip plate assembly for processing microcrystalline plates of the utility model;

[0022] Figure 6 This is a state diagram of the flip plate assembly for processing microcrystalline plates of the utility model when flipping;

[0023] Figure 7 This is a state diagram of the other side when the flip plate assembly for processing microcrystalline plates of the utility model is flipped over;

[0024] Figure 8 This is a state diagram of the flip plate assembly for processing microcrystalline plates of the utility model when flipping is completed;

[0025] Fig. 9 This is a state diagram of the other side of the flip plate assembly for processing microcrystalline panels of the utility model after flipping is completed;

[0026] Fig.10 This is a state diagram of the reset member and the elastic member in the flip plate assembly for processing microcrystalline plates of the utility model.

[0027] Reference numerals: base 1; turntable assembly 2, turntable body 21, rotating rod 22, second bearing 221, driven gear 222, driving motor 23, driving gear 231; sliding seat 3; rotating assembly 4, first bearing 41, rotating shaft 42, fixed seat 43, rotating block 44, connecting column 441; clamping and suction assembly 5, connecting seat 51, supporting surface 511, first slide groove 512, slider 513, column 514, clamping and suction nozzle 52, limiting member 53; guiding assembly 6, connecting plate 61, roller 62, first straight groove section 621, second straight groove section 622, arc section 623, guiding groove 63; linkage assembly 7, first protrusion 71, second protrusion 72, connecting rod 73; pushing assembly 8, first motor 81, output shaft 811, pushing wheel 82, pushing surface 821, arc groove 822, reset member 83, elastic member 84. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the embodiments:

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] like Figures 1 to 10 As shown, a flip plate assembly for processing a microcrystalline plate comprises: a base 1, to which a turntable assembly 2 capable of rotating relative to the base 1 is connected, to which a sliding seat 3 capable of sliding along the base 1 is also connected, to which a rotating assembly 4 capable of rotating relative to the sliding seat 3 and capable of following the movement when the sliding seat 3 slides is connected, to which a clamping and suction assembly 5 capable of clamping the microcrystalline plate and capable of following the movement of the rotating assembly 4 is connected, a guiding assembly 6 capable of driving the rotating assembly 4 to flip 180° when the sliding seat 3 slides up and down relative to the base 1 is provided between the rotating assembly 4 and the turntable assembly 2, and a linkage assembly 7 capable of driving the sliding seat 3 to slide relative to the base 1 when the turntable assembly 2 rotates is provided between the sliding seat 3 and the turntable assembly 2.

[0031] With the above structure, when the microcrystalline board of the production line is conveyed to the clamping and suction component 5 by the conveyor belt, the top surface of the microcrystalline board faces upward and the bottom surface faces downward. After the microcrystalline board moves into place, the clamping and suction component 5 starts to clamp the bottom surface of the microcrystalline board, and the turntable component 2 starts. The turntable component 2 wants to rotate with respect to the base 1. When the turntable component 2 rotates, it drives the linkage component 7 to move. The other end of the linkage component 7 drives the sliding seat 3 to slide upward along the base 1. When the sliding seat 3 slides, the rotating component 4 on the sliding seat 3 moves upward with the sliding seat 3, and during the upward movement of the rotating component 4, the rotating component 4 also moves through the guide assembly Part 6 gradually rotates 180° relative to the sliding seat 3, and the movement of the rotating component 4 and the 180° rotation relative to the sliding seat 3 are performed synchronously. When the rotating component 4 completes the 180° flip, the microcrystalline board is also flipped. After the flip, the bottom surface faces upward and the top surface faces downward. The flipped microcrystalline board can be transported to another assembly line for the next process. The flip plate component for processing the microcrystalline board of the utility model clamps the microcrystalline board through the clamping and suction component 5, and then flips it. No manual flipping is required, which can reduce the breakage of the microcrystalline board caused by manual flanging and improve the yield rate.

[0032] like Figure 5 As shown, the turntable assembly 2 includes a turntable body 21, and a rotating rod 22 extending into the base 1 is provided on one side of the turntable body 21 close to the base 1, and the rotating rod 22 is rotatably connected to the base 1 through a second bearing 221, and the other end of the rotating rod 22 is connected to a driven gear 222, and a driving motor 23 is also provided on the base 1, and the driving motor 23 is provided with a driving gear 231 capable of driving the driven gear 222 to rotate. When the driving motor 23 is started, the output shaft of the driving motor 23 drives the driving gear 231 to rotate, and the driving gear 231 is meshed with the driven gear 222 to drive the rotating rod 22 to rotate, and the rotating rod 22 rotates relative to the base 1 through the second bearing 221, and the turntable body 21 rotates relative to the base 1 under the drive of the rotating rod 22, and the sliding seat 3 slides upward relative to the base 1 under the drive of the linkage assembly 7.

[0033] like Figure 4As shown, the linkage assembly 7 includes a first protrusion 71 that is arranged away from the axis of the turntable body 21, a second protrusion 72 is arranged on the sliding seat 3, a connecting rod 73 that can be rotatably connected to the first protrusion 71 and the second protrusion 72 is arranged between the first protrusion 71 and the second protrusion 72, and when the turntable body 21 rotates, the first protrusion 71 can drive the connecting rod 73 to move upward and then drive the sliding seat 3 to move relative to the base 1. When the turntable body 21 rotates, the first protrusion 71 rotates with the turntable body 21, and the first protrusion 71 gradually moves from the low position of the turntable body 21 to the high position, and the connecting rod 73 is driven by the first protrusion 71 to move upward, and at the same time, the connecting rod 73 also rotates relative to the first protrusion 71, and the other end of the connecting rod 73 rotates relative to the second protrusion 72 and drives the sliding seat 3 to gradually move from the low position of the base 1 to the high position.

[0034] like Figure 4 As shown, the guide assembly 6 includes a connecting plate 61 disposed on the base 1, a roller 62 is disposed on the rotating assembly 4, and a guide groove 63 is disposed on the connecting plate 61 in which the roller 62 can move to flip the rotating assembly 4. The roller 62 is fixedly connected to the rotating assembly 4, so that when the roller 62 rotates in the guide groove 63, it can drive the rotating assembly 4 to flip 180°.

[0035] like Figure 4 As shown, the guide groove 63 includes a first straight groove section 621 and a second straight groove section 622 which are arranged on the connecting plate 61 at an interval, and an arc section 623 is arranged between the first straight groove section 621 and the second straight groove section 622, which can guide the roller 62 to rotate when the roller 62 rotates, thereby turning the rotating assembly 4. When the roller 62 moves in the order of the first straight groove section 621, the arc section 623 and the second straight groove section 622, the rotating assembly 4 can be turned 180 degrees, and because the guide groove 63 is arranged vertically, when the sliding seat 3 gradually moves from the low position of the base 1 to the high position, the rotating assembly 4 and the clamping and suction assembly 5 also come to the high position.

[0036] like Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, the rotating assembly 4 includes a first bearing 41 connected to the sliding seat 3, the inner ring of the first bearing 41 is provided with a rotating shaft 42, the rotating shaft 42 is connected to a fixed seat 43 that can rotate with it, the clamping assembly 5 is connected to the fixed seat 43, and a rotating block 44 is also provided at the end of the rotating shaft 42, and a connecting column 441 is provided on the rotating block 44 that is set off the center, and the roller 62 is connected to the connecting column 441. The rotating assembly 4 is connected to the sliding seat 3 through the first bearing 41, and the rotating shaft 42 can rotate freely relative to the sliding seat 3 through the first bearing 41. When the rotating shaft 42 rotates, the fixed seat 43 and the rotating block 44 rotate synchronously, and the roller 62 on the rotating block 44 moves along the first straight groove section 621, the arc section 623 and the second straight groove section 622. Since the connecting column 441 of the rotating block 44 is set off the center, the rotating block 44 produces eccentric movement when rotating, so that the roller 62 can move laterally, from the first straight groove section 621 to the arc section 623, or from the arc section 623 to the arc section 623 when moving in the reverse direction and resetting. This arrangement can avoid the lateral movement of the rotating shaft 42, reduce the volume of the rotating assembly 4 and the sliding seat 3, and make the entire structure more compact and smaller.

[0037] like Figure 2 As shown, the clamping and suction assembly 5 includes a connection seat 51 connected to the rotating assembly 4, the connection seat 51 is provided with a support surface 511 capable of placing a microcrystalline board, the connection seat 51 is provided with a plurality of clamping and suction air nozzles 52 capable of clamping and sucking the microcrystalline board, and one side of the connection seat 51 is provided with a stopper 53 capable of abutting against the end of the microcrystalline board. The support surface 511 is used to place the microcrystalline board, the clamping and suction air nozzles 52 are used to clamp and suck the microcrystalline board, and the stopper 53 is a stopper plate, which is used to abut against the side of the microcrystalline board to prevent the microcrystalline board from continuing to move.

[0038] like Figure 2 As shown, the connection seat 51 is provided with a pushing assembly 8 which can push the limiter 53 to slide relative to the connection seat 51 after the clamping and suction assembly 5 is turned over 180°. The pushing assembly 8 can push the microcrystalline board to move relative to the connection seat 51, so that the microcrystalline board contacts another transmission belt and moves the microcrystalline board to the outside of the connection seat 51.

[0039] like Figure 2 and Figure 3As shown, the connecting seat 51 is provided with a first slide groove 512, and the first slide groove 512 is connected to a slider 513 that can slide along the first slide groove 512, and the limit member 53 is connected to the slider 513, and the pushing assembly 8 includes a first motor 81, and the output shaft 811 of the first motor 81 is connected to a pushing wheel 82 that can rotate with the first motor 81, and the center A of the pushing wheel 82 deviates from the rotation axis B of the output shaft 811, and the pushing wheel 82 is provided with a pushing surface 821 that can push the slider 513 to slide along the first slide groove 512, and the connecting seat 51 is also provided with a reset member 83 that can slide back and forth relative to the reset member to push the slider 513 to reset, and an elastic member 84 that can push the reset member to slide is provided between the reset member 83 and the connecting seat 51. When the clamping and suction assembly 5 follows the rotating assembly 4 to flip 180°, the clamping and suction assembly 5 also comes to a high position, so another conveyor belt is set at this high position, and the first motor 81 is started. After the first motor 81 is started, the output shaft 811 of the first motor 81 drives the pushing wheel 82 to rotate. Since the center A of the pushing wheel 82 deviates from the rotation axis B of the output shaft 811, the movement trajectory of the pushing wheel 82 is arc-shaped, and the push slider 513 slides horizontally relative to the connecting seat 51. When the limiter 53 follows the sliding of the slider 513, it pushes a part of the microcrystalline board out of the connecting seat 51 horizontally. This part of the microcrystalline board contacts the conveyor belt, and is gradually separated from the connecting seat 51 and completely enters the conveyor belt under the drive of the conveyor belt, thereby completing the 180° flipping of the entire microcrystalline board and the re-transportation of the microcrystalline board, which is more convenient to use. Moreover, when the first motor 81 rotates in the reverse direction to reset, the force on one end of the slider 513 is removed, and the compressed elastic member 84 pushes the reset member 83 to slide and reset. When the reset member 83 resets, it pushes the slider 513 and the limit member 53 to return to their original positions, and the flipping of another microcrystalline board begins.

[0040] like Figure 3 As shown, the connecting seat 51 is provided with a protruding column 514, and the push wheel 82 is provided with an arc groove 822 for the column 514 to pass through and for the column 514 to move in. The column 514 and the arc groove 822 cooperate to limit the rotation range of the push wheel 82, thereby limiting the range in which the push wheel 82 pushes the slider 513 to slide along the first slide groove 512.

[0041] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A flip plate assembly for processing microcrystalline plates, characterized in that: The invention comprises: a base (1), the base (1) being connected to a turntable assembly (2) capable of rotating relative to the base (1), the base (1) being further connected to a sliding seat (3) capable of sliding along the base (1), the sliding seat (3) being connected to a rotating assembly (4) capable of rotating relative to the base (1) and being able to move along with the sliding seat (3) when the sliding seat (3) slides, the rotating assembly (4) being connected to a clamping assembly (5) capable of clamping and sucking a microcrystalline plate and being able to move along with the rotating assembly (4), a guiding assembly (6) being provided between the rotating assembly (4) and the turntable assembly (2) and being able to drive the rotating assembly (4) to perform a 180° flip when the sliding seat (3) slides up and down relative to the base (1), and a linkage assembly (7) being provided between the sliding seat (3) and the turntable assembly (2) and being able to drive the sliding seat (3) to slide relative to the base (1) when the turntable assembly (2) rotates.

2. The flip plate assembly for processing microcrystalline plates according to claim 1, characterized in that: The clamping and suction assembly (5) comprises a connecting seat (51) connected to the rotating assembly (4); the connecting seat (51) is provided with a supporting surface (511) capable of placing a microcrystalline board; the connecting seat (51) is provided with a plurality of clamping and suction air nozzles (52) capable of clamping and suctioning the microcrystalline board; and one side of the connecting seat (51) is provided with a limiting member (53) capable of abutting against an end of the microcrystalline board.

3. The flip plate assembly for processing microcrystalline plates according to claim 2, characterized in that: The connecting seat (51) is provided with a pushing assembly (8) which can push the limiting member (53) to slide relative to the connecting seat (51) after the clamping and suction assembly (5) is turned over 180 degrees.

4. The flip plate assembly for processing microcrystalline plates according to claim 3, characterized in that: The connecting seat (51) is provided with a first slide groove (512), and a slider (513) capable of sliding along the first slide groove (512) is connected to the first slide groove (512), and the limit member (53) is connected to the slider (513). The pushing assembly (8) comprises a first motor (81), and a pushing wheel (82) capable of rotating with the first motor (81) is connected to the output shaft (811) of the first motor (81). The center (A) of the pushing wheel (82) deviates from the rotation axis (B) of the output shaft (811). The pushing wheel (82) is provided with a pushing surface (821) capable of pushing the slider (513) to slide along the first slide groove (512). The connecting seat (51) is also provided with a reset member (83) capable of sliding back and forth relative to the reset member to push the slider (513) to reset. An elastic member (84) capable of pushing the reset member to slide is provided between the reset member (83) and the connecting seat (51).

5. The flip plate assembly for processing microcrystalline plates according to claim 4, characterized in that: The connecting seat (51) is provided with a protruding column (514), and the pushing wheel (82) is provided with an arc-shaped groove (822) through which the column (514) can pass and in which the column (514) can move.

6. The flip plate assembly for processing microcrystalline plates according to claim 1, characterized in that: The guide assembly (6) comprises a connecting plate (61) arranged on the base (1), the rotating assembly (4) is provided with a roller (62), and the connecting plate (61) is provided with a guiding groove (63) in which the roller (62) can move to cause the rotating assembly (4) to flip.

7. The flip plate assembly for processing microcrystalline plates according to claim 6, characterized in that: The guide groove (63) comprises a first straight groove section (621) and a second straight groove section (622) which are arranged on the connecting plate (61) at an interval up and down, and an arc section (623) is arranged between the first straight groove section (621) and the second straight groove section (622) so as to guide the roller (62) to rotate when the roller (62) rotates, thereby causing the rotating assembly (4) to flip.

8. The flip plate assembly for processing microcrystalline plates according to claim 6, characterized in that: The rotating assembly (4) includes a first bearing (41) connected to the sliding seat (3), the inner ring of the first bearing (41) is provided with a rotating shaft (42), the rotating shaft (42) is connected to a fixed seat (43) capable of rotating with it, the clamping assembly (5) is connected to the fixed seat (43), the end of the rotating shaft (42) is also provided with a rotating block (44), the rotating block (44) is provided with a connecting column (441) arranged off the center thereof, and the roller (62) is connected to the connecting column (441).

9. The flip plate assembly for processing microcrystalline plates according to claim 1, characterized in that: The turntable assembly (2) comprises a turntable body (21); a rotating rod (22) extending into the base (1) is provided on a side of the turntable body (21) close to the base (1); the rotating rod (22) is rotatably connected to the base (1) via a second bearing (221); the other end of the rotating rod (22) is connected to a driven gear (222); a driving motor (23) is also provided on the base (1); and a driving gear (231) is provided on the driving motor (23) which can drive the driven gear (222) to rotate.

10. The flip plate assembly for processing microcrystalline plates according to claim 1, characterized in that: The linkage assembly (7) comprises a first protrusion (71) arranged away from the axis of the turntable body (21); a second protrusion (72) is arranged on the sliding seat (3); a connecting rod (73) rotatably connected to the first protrusion (71) and the second protrusion (72) is arranged between the first protrusion (71) and the second protrusion (72); and when the turntable body (21) rotates, the first protrusion (71) can drive the connecting rod (73) to move upwards and thereby drive the sliding seat (3) to move relative to the base (1).