A flexible gripping device for preparing silicone products

Abstract

The present invention relates to the technical field of gripping equipment, and specifically discloses a flexible gripping equipment for the preparation of silicone products, comprising a base and a robot body, wherein the robot body is mounted on the top of the base, a mounting plate is mounted on one end of the robot body away from the base, a connecting plate is movably mounted on the bottom of the mounting plate, a camera is mounted on the bottom of the connecting plate, and a gripping mechanism is provided on the connecting plate. The present invention is provided with abutment blocks and clamping blocks. When the substrate silicone strip is loaded, the abutment blocks clamp the substrate silicone strip, and the connecting plate drives the abutment blocks to rotate. The clamping blocks clamp the two ends of the substrate silicone strip and gradually move closer to the connecting plate as the connecting plate rotates. This can assist in the rolling of the substrate silicone strip, so that the substrate silicone strip can be rolled into a roll-like shape to be processed more quickly and conveniently through the rotation of the connecting plate, eliminating the manual rolling process of the staff and reducing the labor intensity of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of gripping equipment, and in particular to a flexible gripping equipment used in the preparation of silicone products. Background Art

[0002] Silicone products are a type of polymer elastomer material products made from silicone as the main raw material through molding, extrusion, injection, calendering and other processes. For example, the production of silicone rings is to prevent the divided silicone material strips from being put into the hot pressing mold of the hot press for processing.

[0003] During the processing of silicone rings, workers are required to manually knead the divided silicone strips into a ball and then place it into the hot pressing mold. This operation method not only increases the labor intensity of the workers, but also the hot pressing mold itself has operational risks during the manual operation of the workers, affecting the safety of the workers. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a flexible gripping device for the preparation of silicone products.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A flexible gripping device for preparing silicone products includes a base and a robot body. The robot body is installed on the top of the base. A mounting plate is installed at the end of the robot body away from the base. A connecting plate is movably installed at the bottom of the mounting plate. A camera is installed at the bottom of the connecting plate. A gripping mechanism is provided on the connecting plate. A mounting rod is movably connected to the bottom of the mounting plate. An auxiliary mechanism is provided on the mounting rod.

[0007] Preferably, a first rotating motor is embedded in the bottom of the mounting plate, with the output end of the first rotating motor facing downward, and a first electric lifting rod is connected to the top of the connecting plate, with the mounting end of the first electric lifting rod connected to the output end of the first rotating motor.

[0008] Preferably, the grabbing mechanism includes a moving block, an electric telescopic rod and an abutment block, and a plurality of first slots are evenly arranged on the mounting plate. The moving block is movably installed inside the first slot, and the electric telescopic rod is connected to the moving block. The telescopic end of the electric telescopic rod is away from the moving block, and the telescopic end of the electric telescopic rod is movably connected to the abutment block.

[0009] Preferably, first sliding grooves are provided on both inner walls of the first slot, and both sides of the moving block are movably connected with first electric sliders through electric rotating shafts, and the first electric sliders are slidably installed inside the first sliding grooves.

[0010] Preferably, a second slot is provided on one side of the abutment block close to the electric telescopic rod, a sliding plate is slidably installed inside the second slot, the telescopic end of the electric telescopic rod is connected to the sliding plate, and the telescopic end of the electric telescopic rod can extend into the inside of the second slot.

[0011] Preferably, a stabilizing groove is provided on the inner walls on both sides of the second groove, and a stabilizing slider is slidably installed inside the stabilizing groove. The side of the stabilizing slider close to the sliding plate is connected to the sliding plate, and a plurality of springs are installed at the bottom end of the inner wall of the second groove, and the end of the spring close to the sliding plate is connected to the sliding plate.

[0012] Preferably, two movable slide grooves are provided at the bottom of the mounting plate, and a movable electric slider is slidably installed inside the movable slide groove, and a second electric lifting rod is installed at the bottom of the movable electric slider, and the lifting end of the second electric lifting rod faces downward, and the lifting end of the second electric lifting rod is connected to a connecting piece, and a concave mounting groove is provided at the bottom of the connecting piece, and a rotating block is rotatably installed inside the concave mounting groove of the connecting piece, and one side of the rotating block is movably connected to the mounting rod.

[0013] Preferably, a rotating motor is installed on one side wall of the connecting piece, and the output end of the rotating motor movably passes through the side wall of the connecting piece and is connected to the rotating block.

[0014] Preferably, a second rotary motor is embedded in a side of the rotating block close to the mounting rod, and an output end of the second rotary motor is connected to the mounting rod.

[0015] Preferably, the auxiliary mechanism includes a clamping block, a displacement slot is provided on the side of the mounting rod away from the rotating block, two displacement electric sliders are slidably installed inside the displacement slot, and a clamping block is connected to the side of the displacement electric slider away from the mounting rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention is provided with an abutment block and a clamping block. When the substrate silicone strip is loaded, the abutment block clamps the substrate silicone strip, and the connecting plate drives the abutment block to rotate. The clamping block clamps both ends of the substrate silicone strip and gradually moves closer to the connecting plate as the connecting plate rotates, thereby assisting in the rolling of the substrate silicone strip. The substrate silicone strip can be more quickly and conveniently rolled into a roll shape to be processed by the rotation of the connecting plate, eliminating the manual rolling process of the staff and reducing the labor intensity of the staff.

[0018] After the base silicone strip is rolled, the robot body drives the mounting plate to move to the mold of the hot press. Then, the two abutment blocks move away from each other and the clamping blocks move away from each other to lower the rolled base silicone strip. This operation method can complete the automatic loading of the base silicone strip, increasing the convenience of using the device.

[0019] The camera can be used to capture the loading situation of the substrate silicone strip in the hot pressing mold. The camera can detect the accuracy of the loading position of the substrate silicone strip by transmitting the captured image to the background control system for comparison. If the loading position of the substrate silicone strip is detected to be inaccurate, the position of the substrate silicone strip can be adjusted by clamping the substrate silicone strip and moving it, thereby increasing the convenience of use of the device.

[0020] After the finished silicone ring is formed, the abutment block can abut against the inner wall of the finished silicone ring, and then the robot body drives the mounting plate to move, so that the finished silicone ring can be automatically taken out from the hot pressing mold, which increases the convenience of using the device. When the abutment block abuts against the inner wall of the finished silicone ring, the sliding plate slides in the second slot, so that the abutment block has a flexible buffering force when taking out the finished silicone ring, which not only increases the abutment stability between the abutment block and the finished silicone ring, but also does not cause damage to the finished silicone ring.

[0021] When the abutment block abuts against the finished silicone ring blanking and moves to the preset use position, the two clamping blocks clamp the remaining material on the outside of the finished silicone ring, and then the mounting rod moves downward away from the connecting plate, which can complete the automatic separation of the finished silicone ring and the remaining material on the outside of it. Then, the robot body drives the mounting plate to move and combines the movement of the connecting plate and the mounting rod to complete the classified blanking of the finished silicone ring and the remaining material on the outside of the finished silicone ring, thereby increasing the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the connecting plate and mounting rod structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the installation structure of the first rotating electrical machine of the present invention;

[0025] Figure 4 This is a schematic diagram of the mounting rod and clamping block structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the installation structure of the second rotating electrical machine of the present invention;

[0027] Figure 6 This is a schematic diagram of the installation structure of the moving block of the present invention;

[0028] Figure 7 For the present invention Figure 6 A in the middle is an enlarged structural diagram;

[0029] Figure 8 This is a schematic diagram of the sliding plate installation structure of the present invention;

[0030] Figure 9 It is a schematic cross-sectional structural diagram of the abutment block of the present invention;

[0031] Figure 10 This is a schematic structural diagram of the finished silicone ring of the present invention;

[0032] Figure 11 Schematic diagram of the structure of the substrate silicone strip of the present invention.

[0033] In the figure: 1. Base; 2. Robot body; 3. Mounting plate; 4. First electric lifting rod; 5. Connecting plate; 6. Second electric lifting rod; 7. Mounting rod; 8. Camera; 9. Moving slide; 10. Moving electric slider; 11. First rotating motor; 12. Connector; 13. Rotating motor; 14. Displacement slide; 15. Displacement electric slider; 16. Clamp; 17. Rotating block; 18. Second rotating motor; 19. First slot; 20. Moving block; 21. Electric telescopic rod; 22. Abutment block; 23. First slide; 24. First electric slider; 25. Second slot; 26. Sliding plate; 27. Stabilizing slide; 28. Stabilizing slider; 29. ​​Spring; 30. Finished silicone ring; 31. Base silicone strip. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-11 A flexible gripping device for preparing silicone products includes a base 1 and a robot body 2. The robot body 2 is mounted on the top of the base 1. A mounting plate 3 is mounted on the end of the robot body 2 away from the base 1. A connecting plate 5 is movably mounted on the bottom of the mounting plate 3. A camera 8 is mounted on the bottom of the connecting plate 5. A gripping mechanism is provided on the connecting plate 5. A mounting rod 7 is movably connected to the bottom of the mounting plate 3. An auxiliary mechanism is provided on the mounting rod 7. The camera 8 can provide trajectory support for the operation of the device, making it convenient for the device to adjust its operation according to different usage states. The gripping mechanism can realize flexible gripping and unloading of the finished silicone ring 30. The auxiliary mechanism can realize pre-processing of the base silicone strip 31. At the same time, it can also assist the gripping mechanism in automatically removing excess material from the workpiece when the workpiece is being formed, thereby increasing the convenience and diversity of the device's functions.

[0036] As a technical optimization solution of the present invention, a first rotary motor 11 is embedded in the bottom of the mounting plate 3, with the output end of the first rotary motor 11 facing downward. A first electric lift rod 4 is connected to the top of the connecting plate 5, with the mounting end of the first electric lift rod 4 connected to the output end of the first rotary motor 11. The first rotary motor 11 can drive the connecting plate 5 to rotate, and the first electric lift rod 4 can drive the connecting plate 5 to rise or fall according to usage requirements.

[0037] As a technical optimization solution of the present invention, the grasping mechanism includes a moving block 20, an electric telescopic rod 21, and an abutment block 22. A plurality of first slots 19 are evenly distributed on the mounting plate 3. The moving block 20 is movably mounted within each of the first slots 19. The electric telescopic rod 21 is connected to the moving block 20. The telescopic end of the electric telescopic rod 21 is away from the moving block 20, and the telescopic end of the electric telescopic rod 21 is movably connected to the abutment block 22. By moving the moving block 20 within the first slot 19, the use position of the abutment block 22 within the first slot 19 can be changed. The electric telescopic rod 21 can drive the abutment block 22 to extend according to specific usage requirements.

[0038] As a technical optimization solution of the present invention, first chute 23 is formed on both sides of the inner wall of the first slot 19. First electric sliders 24 are movably connected to both sides of the movable block 20 via electric shafts. The first electric sliders 24 are slidably mounted within the first chute 23. The electric shaft can drive the movable block 20 to rotate, thereby allowing the abutment block 22 connected to the movable block 20 to automatically switch its use state. The sliding of the first electric sliders 24 in the first chute 23 can drive the movable block 20 to move within the first slot 19.

[0039] As a technical optimization solution of the present invention, a second slot 25 is formed on the side of the abutment block 22 near the electric telescopic rod 21. A sliding plate 26 is slidably mounted within the second slot 25. The telescopic end of the electric telescopic rod 21 is connected to the sliding plate 26 and can extend into the second slot 25. The sliding of the sliding plate 26 within the second slot 25 provides a flexible buffering force when the abutment block 22 removes the finished silicone ring 30. This not only increases the abutment stability between the abutment block 22 and the finished silicone ring 30, but also prevents damage to the finished silicone ring 30.

[0040] As a technical optimization solution of the present invention, stabilizing grooves 27 are provided on both inner walls of the second slot 25. Stabilizing sliders 28 are slidably mounted within the stabilizing grooves 27. The side of the stabilizing slider 28 near the sliding plate 26 is connected to the sliding plate 26. A plurality of springs 29 are mounted on the bottom end of the inner wall of the second slot 25. The ends of the springs 29 near the sliding plate 26 are connected to the sliding plate 26. The sliding of the stabilizing sliders 28 in the stabilizing grooves 27 increases the sliding stability of the sliding plate 26 within the second slot 25, and the springs 29 provide flexible support for the sliding of the sliding plate 26.

[0041] As a technical optimization solution of the present invention, two movable chutes 9 are provided at the bottom of the mounting plate 3. A movable electric slider 10 is slidably installed inside the movable chutes 9. A second electric lifting rod 6 is installed at the bottom of the movable electric slider 10. The lifting end of the second electric lifting rod 6 faces downward. The lifting end of the second electric lifting rod 6 is connected to a connecting member 12. The bottom of the connecting member 12 is provided with a concave mounting groove. A rotating block 17 is rotatably installed inside the concave mounting groove of the connecting member 12. One side of the rotating block 17 is movably connected to the mounting rod 7. By sliding the movable electric slider 10 in the movable chutes 9, the use position of the mounting rod 7 below the mounting plate 3 can be changed according to usage requirements. The second electric lifting rod 6 can change the use height of the mounting rod 7 according to usage requirements. By rotating the rotating block 17 inside the connecting member 12, the use angle of the mounting rod 7 can be changed.

[0042] As a technical optimization solution of the present invention, a rotary motor 13 is mounted on one side wall of the connector 12. The output end of the rotary motor 13 movably passes through the side wall of the connector 12 and is connected to the rotary block 17. The rotation of the rotary motor 13 drives the rotary block 17 to rotate inside the connector 12.

[0043] As a technical optimization solution of the present invention, a second rotary motor 18 is embedded and installed on the side of the rotating block 17 close to the mounting rod 7. The output end of the second rotary motor 18 is connected to the mounting rod 7. The second rotary motor 18 rotates, which can drive the mounting rod 7 to rotate.

[0044] As a technical optimization solution of the present invention, the auxiliary mechanism includes a clamping block 16. A displacement chute 14 is provided on the side of the mounting rod 7 away from the rotating block 17. Two displacement electric sliders 15 are slidably installed inside the displacement chute 14. The side of the displacement electric slider 15 away from the mounting rod 7 is connected to the clamping block 16. The sliding of the displacement electric slider 15 in the displacement chute 14 can drive the clamping block 16 to move on the mounting rod 7, so that the clamping block 16 can clamp the workpiece according to the use requirements.

[0045] When the present invention is in use, the electrical equipment used in the device are all powered by connecting the power supply through wires. The device is powered by a preset control system. The robot body 2 used in the device is an existing mature technology, so it will not be elaborated on in detail. The base 1 of the device is installed at a preset position outside the hot press mold. The hot press and the hot pressing mold are existing mature technologies, so they will not be elaborated on in detail. The process of placing the base silicone strip 31 into the hot tooth mold and processing the base silicone strip 31 into the finished silicone ring 30 through the hot pressing mold is an existing mature technology, so it will not be elaborated on in detail.

[0046] When the device is in use, the divided substrate silicone strip 31 is transferred to the robot body 2 by the conveying device provided on the outside of the hot press. The conveying device is an existing mature technology, so it will not be elaborated on in detail. Then, the robot body 2 drives the mounting plate 3 to move above the substrate silicone strip 31, and then the first electric lifting rod 4 drives the connecting plate 5 to move downward to the preset use position. The electric shaft installed on the two relative position moving blocks 20 drives the moving block 20 to rotate downward until the two electric telescopic rods 21 are rotated to the downward use state, and at this time, the two abutting blocks 22 are respectively located at the two side positions of the middle section of the substrate silicone strip 31, and then the first electric slider 24 slides in the first slide groove 23, so that the two abutting blocks 22 move closer to each other until the two abutting blocks 22 respectively clamp the two sides of the middle section of the substrate silicone strip 31, thereby completing the fixation of the middle part of the substrate silicone strip 31;

[0047] Then, the rotating motor 13 drives the rotating block 17 to rotate, so that the two clamping blocks 16 are rotated to the downward use state. Then, the second rotating motor 18 drives the mounting rod 7 to rotate, so that the two clamping blocks 16 are respectively located on both sides of the two ends of the substrate silicone strip 31. The displacement electric slider 15 slides in the displacement slide groove 14, so that the two clamping blocks 16 are respectively clamped on both sides of the two ends of the substrate silicone strip 31, thereby completing the fixation of the two ends of the substrate silicone strip 31.

[0048] Subsequently, the connecting plate 5 is driven to rotate by the first rotating motor 11, so that the substrate silicone strip 31 can be rolled up from the middle part of the substrate silicone strip 31. In the process of rolling up the substrate silicone strip 31, the two ends of the substrate silicone strip 31 are clamped by the clamping block 16 and gradually move closer to the connecting plate 5 as the connecting plate 5 rotates, which can assist the rolling of the substrate silicone strip 31, so that the substrate silicone strip 31 can be rolled into the roll shape to be processed more quickly and conveniently through the rotation of the connecting plate 5, eliminating the manual rolling process of the staff and reducing the labor intensity of the staff.

[0049] After the base silicone strip 31 is rolled, the robot body 2 drives the mounting plate 3 to move to the mold of the hot press. Then, the two abutment blocks 22 move away from each other and the clamping blocks 16 move away from each other to complete the lowering of the rolled base silicone strip 31. This operation method can complete the automatic loading of the base silicone strip 31, increasing the convenience of use of the device.

[0050] When the rolled base silicone strip 31 is wound around the abutment block 22, the clamping block 16 is clamped on the outside of the base silicone strip 31 and the second electric lifting rod 6 is extended downward to complete the auxiliary feeding of the base silicone strip 31 on the abutment block 22;

[0051] The camera 8 can be used to capture the loading situation of the substrate silicone strip 31 in the hot pressing mold. The camera 8 can detect the accuracy of the loading position of the substrate silicone strip 31 by transmitting the captured image to the background control system for comparison. If it is detected that the loading position of the substrate silicone strip 31 is inaccurate, the position of the substrate silicone strip 31 can be adjusted by clamping the substrate silicone strip 31 with the clamping block 16 and moving it, thereby increasing the convenience of using the device.

[0052] The base silicone strip 31 is placed in the hot pressing mold. Through the processing of the hot pressing mold, the workpiece is formed into a finished silicone ring 30. Then the hot pressing mold is opened. At this time, driven by the robot body 2, the connecting plate 5 moves to the top of the finished silicone ring 30 after the mold is opened, and under the downward extension of the first electric lifting rod 4, the connecting plate 5 moves to the inside of the finished silicone ring 30. At this time, the multiple abutment blocks 22 are all Figure 6 In the usage state shown in , the electric telescopic rod 21 is extended outward so that the abutment block 22 can abut against the inner wall of the finished silicone ring 30, and then the robot body 2 drives the mounting plate 3 to move, so that the finished silicone ring 30 can be automatically taken out from the hot pressing mold, which increases the convenience of using the device. When the abutment block 22 abuts against the inner wall of the finished silicone ring 30, the sliding plate 26 slides in the second slot 25, and the spring 29 can buffer the sliding force of the sliding plate 26, so that the abutment block 22 has a flexible buffering force when taking out the finished silicone ring 30, which not only increases the abutment stability between the abutment block 22 and the finished silicone ring 30, but also does not cause damage to the finished silicone ring 30.

[0053] When the finished silicone ring 30 is formed and taken out, there is a circle of residual material on the outside of the finished silicone ring 30. The traditional operation method is to manually pull it apart by the staff. When the abutment block 22 abuts the finished silicone ring 30 to cut the material and move it to the preset use position, the mounting rod 7 and the clamping block 16 rotate to the use direction toward the connecting plate 5, and at this time the two clamping blocks 16 are respectively located above and below the residual material on the outside of the finished silicone ring 30. The two clamping blocks 16 move closer to each other, which can clamp the residual material on the outside of the finished silicone ring 30, and then the mounting rod 7 moves downward away from the connecting plate 5, which can complete the automatic separation of the finished silicone ring 30 and the residual material on its outside. Then, the robot body 2 drives the mounting plate 3 to move, and the movement of the connecting plate 5 and the mounting rod 7 can complete the classified cutting of the finished silicone ring 30 and the residual material on the outside of the finished silicone ring 30, thereby increasing the convenience of use of the device.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A flexible gripping device for preparing silicone products, comprising a base (1) and a robot body (2), characterized in that: The robot body (2) is mounted on the top of the base (1), a mounting plate (3) is mounted on one end of the robot body (2) away from the base (1), a connecting plate (5) is movably mounted on the bottom of the mounting plate (3), a camera (8) is mounted on the bottom of the connecting plate (5), a grabbing mechanism is provided on the connecting plate (5), a mounting rod (7) is movably connected to the bottom of the mounting plate (3), and an auxiliary mechanism is provided on the mounting rod (7); The grabbing mechanism includes a moving block (20), an electric telescopic rod (21) and an abutting block (22); a plurality of first slots (19) are evenly provided on the mounting plate (3); the moving block (20) is movably mounted inside the first slot (19); the moving block (20) is connected to the electric telescopic rod (21); the telescopic end of the electric telescopic rod (21) is away from the moving block (20); and the telescopic end of the electric telescopic rod (21) is movably connected to the abutting block (22); First sliding grooves (23) are provided on both inner walls of the first slot (19), and first electric sliders (24) are movably connected to both sides of the moving block (20) via electric rotating shafts, and the first electric sliders (24) are slidably installed inside the first sliding grooves (23); A second slot (25) is provided on a side of the abutment block (22) close to the electric telescopic rod (21), a sliding plate (26) is slidably mounted inside the second slot (25), the telescopic end of the electric telescopic rod (21) is connected to the sliding plate (26), and the telescopic end of the electric telescopic rod (21) can extend into the interior of the second slot (25).

2. The flexible gripping device for preparing silicone products according to claim 1, characterized in that: A first rotating motor (11) is embedded and installed at the bottom of the mounting plate (3), with the output end of the first rotating motor (11) facing downward. A first electric lifting rod (4) is connected to the top of the connecting plate (5), and the mounting end of the first electric lifting rod (4) is connected to the output end of the first rotating motor (11).

3. The flexible gripping device for preparing silicone products according to claim 1, characterized in that: A stabilizing slide groove (27) is provided on both inner walls of the second slot (25), and a stabilizing slider (28) is slidably installed inside the stabilizing slide groove (27). The side of the stabilizing slider (28) close to the sliding plate (26) is connected to the sliding plate (26). A plurality of springs (29) are installed at the bottom end of the inner wall of the second slot (25), and the end of the spring (29) close to the sliding plate (26) is connected to the sliding plate (26).

4. The flexible gripping device for preparing silicone products according to claim 1, characterized in that: Two movable chutes (9) are provided at the bottom of the mounting plate (3), a movable electric slider (10) is slidably installed inside the movable chutes (9), a second electric lifting rod (6) is installed at the bottom of the movable electric slider (10), the lifting end of the second electric lifting rod (6) faces downward, the lifting end of the second electric lifting rod (6) is connected to a connecting piece (12), a concave mounting groove is provided at the bottom of the connecting piece (12), a rotating block (17) is rotatably installed inside the concave mounting groove of the connecting piece (12), and one side of the rotating block (17) is movably connected to the mounting rod (7).

5. The flexible gripping device for preparing silicone products according to claim 4, characterized in that: A rotating motor (13) is mounted on one side wall of the connecting member (12), and an output end of the rotating motor (13) movably passes through the side wall of the connecting member (12) and is connected to the rotating block (17).

6. The flexible gripping device for preparing silicone products according to claim 4, characterized in that: A second rotary motor (18) is embedded and installed on one side of the rotating block (17) close to the mounting rod (7), and an output end of the second rotary motor (18) is connected to the mounting rod (7).

7. The flexible gripping device for preparing silicone products according to claim 1, characterized in that: The auxiliary mechanism includes a clamping block (16), a displacement chute (14) is provided on a side of the mounting rod (7) away from the rotating block (17), two displacement electric sliders (15) are slidably installed inside the displacement chute (14), and a clamping block (16) is connected to a side of the displacement electric slider (15) away from the mounting rod (7).

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