Mechanical clamping hand suitable for clamping and placing workpieces in various shapes

Abstract

The utility model relates to the technical field of mechanical clamping hands, and discloses a mechanical clamping hand suitable for clamping and placing workpieces in various shapes, which comprises a shell, a sliding rail is fixedly connected in the shell, a sliding block is slidably connected to the top of the sliding rail, a tray is fixedly connected to the top of the sliding block, and the tray is fixedly connected with the bottom of the shell. A rotating assembly for rotating subsequent workpieces is fixedly connected into the tray, a connecting rod is rotationally connected to the top of the rotating assembly, a rotating block is rotationally connected to the top of the connecting rod, a transverse rod is rotationally connected to the front end of the rotating block, and an adapter is fixedly connected to the front end of the transverse rod. And the interior of the adapter is rotationally and fixedly connected with two adapter rods. According to the utility model, the clamping hands with different sizes can be replaced to adapt to workpieces with different sizes and shapes, which means that a production line can process diversified workpieces, and the flexibility and adaptability can greatly improve the production efficiency and the utilization rate of the production line.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical grippers, in particular to a mechanical gripper suitable for clamping and placing workpieces of various shapes. Background Art

[0002] A mechanical gripper refers to a mechanical device used for clamping and placing workpieces of various shapes. This device is usually designed to adapt to workpieces of different shapes, sizes and weights, and can accurately grasp and release workpieces to complete the operation tasks on an automated production line. In industrial robots, automatic assembly lines or other automated equipment, the mechanical gripper can accurately clamp the workpiece at a specific position according to preset programs and instructions, and place it at the designated position.

[0003] In the prior art, during the use of some mechanical grippers, the mechanical hand cannot adjust the size and shape of various items, so some flexible work tasks cannot be completed, which may cause the mechanical gripper to be unable to safely hold or damage the workpiece. Therefore, a mechanical gripper suitable for clamping and placing workpieces of various shapes is proposed to solve the above problems. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a mechanical gripper suitable for clamping and placing workpieces of various shapes, aiming to improve the problem that the mechanical gripper can be quickly replaced in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A mechanical gripper suitable for clamping and placing workpieces of various shapes includes a housing. A slide rail is fixedly connected inside the housing. A slider is slidably connected to the top of the slide rail. A tray is fixedly connected to the top of the slider. A rotating assembly for rotating subsequent workpieces is fixedly connected inside the tray. A connecting rod is rotatably connected to the top of the rotating assembly. A rotating block is rotatably connected to the top of the connecting rod. A cross bar is rotatably connected to the front end of the rotating block. A swivel joint is fixedly connected to the front end of the cross bar. Two adapter rods are rotatably and fixedly connected inside the swivel joint. The adjacent ends of the two adapter rods are rotatably connected to a linkage disk. Pull rods are slidably connected to the left and right sides of the linkage disk. A connecting rod is rotatably connected to the bottom of the pull rod. A fixing assembly for restricting subsequent workpieces is rotatably connected to the bottom of the connecting rod. A protective housing is fixedly connected to the bottom of the linkage disk. A clamping assembly for fixing the workpiece is fixedly connected inside the protective housing;

[0007] As a further description of the above technical solution:

[0008] The rotating assembly includes a motor, the outside of the motor is fixedly connected to the inside of the tray, and the driving end of the motor is fixedly connected with a rotating block;

[0009] As a further description of the above technical solution:

[0010] The fixing assembly includes two linkage blocks, the top of the linkage block is rotatably connected to the bottom of the connecting rod, the far ends of the two linkage blocks are fixedly connected with limiting blocks, the far ends of the two limiting blocks are fixedly connected with springs, the far ends of the two springs are fixedly connected with clamping blocks, and the outside of the limiting block is slidably connected with a connecting shell;

[0011] As a further description of the above technical solution:

[0012] The clamping assembly includes a hydraulic cylinder, the top of the hydraulic cylinder is fixedly connected to the inside of the protective shell, the driving end of the hydraulic cylinder is fixedly connected with a rack plate, two limiting rods I are fixedly connected to the left and right sides inside the protective shell, a gear is rotatably connected to the adjacent ends of one pair of the limiting rods I, two limiting rods II are fixedly connected to the left and right sides inside the protective shell, a sector gear block is rotatably connected to the adjacent ends of one pair of the limiting rods II, and a clamping block is fixedly connected to the bottom of the sector gear block;

[0013] As a further description of the above technical solution:

[0014] The top of the tray is in contact with the bottom of the rotating block, and the top of the rotating block is rotatably connected to the bottom of the connecting rod;

[0015] As a further description of the above technical solution:

[0016] The outside of the linkage block is slidably connected to the inside of the connecting shell, and the outside of the clamping block is slidably connected to the inside of the connecting shell;

[0017] As a further description of the above technical solution:

[0018] The bottom of the connecting shell is slidably connected to the inside of the protective shell, and the outside end of the clamping block is engaged with the protective shell;

[0019] As a further description of the above technical solution:

[0020] The left and right sides of the rack plate are externally meshed with the two gears, and the gear is meshed with the sector gear block.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present utility model, by pulling the pull rod, the connecting rod is moved to one side, so that the linkage block can be pulled. The limiting block on one side of the linkage block can drive the spring to move, so that the other limiting block pulls the clamping block away, realizing that different sizes of clamping hands can be replaced to adapt to workpieces of different sizes and shapes. This means that the production line can process diversified workpieces, and this flexibility and adaptability can greatly improve the production efficiency and the utilization rate of the production line.

[0023] 2. In the present utility model, the hydraulic cylinder is used to push the rack plate downward. When the rack plate rotates, it can drive two gears to rotate. While the two gears are rotating, they can drive two sector gear blocks to rotate, realizing that when the mechanical clamping hand can firmly clamp the workpiece, it can maintain stability during the whole operation process, which is particularly important for high-speed movement or precise operation, thus improving the stability and reliability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional schematic diagram of a mechanical clamping hand for clamping and placing workpieces of various shapes proposed by the present utility model;

[0025] Figure 2 is a structural schematic diagram of the connecting rod of a mechanical clamping hand for clamping and placing workpieces of various shapes proposed by the present utility model;

[0026] Figure 3 is a structural schematic diagram of the motor of a mechanical clamping hand for clamping and placing workpieces of various shapes proposed by the present utility model;

[0027] Figure 4 is a structural schematic diagram of the gear of a mechanical clamping hand for clamping and placing workpieces of various shapes proposed by the present utility model;

[0028] Figure 5 is a structural schematic diagram of the linkage disk of a mechanical clamping hand for clamping and placing workpieces of various shapes proposed by the present utility model;

[0029] Figure 6 is Figure 5 the enlarged view at A in

[0030] Figure 7 is a structural schematic diagram of the pull rod of a mechanical clamping hand for clamping and placing workpieces of various shapes proposed by the present utility model.

[0031] LEGEND DESCRIPTION:

[0032] 1. Outer shell; 2. Slide rail; 3. Slide block; 4. Tray; 5. Motor; 6. Rotating block; 7. Connecting rod; 8. Rotating block; 9. Cross bar; 10. Adapter; 11. Adapter rod; 12. Linking disk; 13. Protective shell; 14. Hydraulic cylinder; 15. Rack plate; 16. Limiting rod 1; 17. Gear; 18. Limiting rod 2; 19. Sector gear block; 20. Clamping block; 21. Pull rod; 22. Connecting rod; 23. Linking block; 24. Restricting block; 25. Spring; 26. Locking block; 27. Connecting shell. Detailed implementation manner

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Refer to Figure 1 - Figure 3 As shown in, an embodiment provided by the present invention: A mechanical gripper applicable to the clamping and placement of workpieces of various shapes, including an outer shell 1. The outer shell 1 is used to protect the internal components and provide support and stability for the overall structure. The outer shell 1 is usually made of metal, having sufficient strength and durability. Inside the outer shell 1, a slide rail 2 is fixedly connected. At the top of the slide rail 2, a slide block 3 is slidably connected. The slide block 3 can move along the length direction of the slide rail 2. At the top of the slide block 3, a tray 4 is fixedly connected. By moving the slide block 3, the tray 4 can be driven to move. Inside the tray 4, a rotating assembly for rotating the subsequent workpiece is fixedly connected. The rotating assembly includes a motor 5. The outside of the motor 5 is fixedly connected inside the tray 4. Through the tray 4, the outside of the motor 5 can be fixed to prevent damage. The driving end of the motor 5 is fixedly connected with a rotating block 6. When the motor 5 is started, the rotating block 6 can be driven to rotate. The top of the tray 4 is in contact with the bottom of the rotating block 6, and the rotating block 6 can rotate on the top of the tray 4;

[0035] Refer to Figure 6 - Figure 7, a connecting rod 7 is rotatably connected to the top of the rotating assembly, and the top of the rotating block 6 is rotatably connected to the bottom of the connecting rod 7. When the rotating block 6 rotates, it can drive the connecting rod 7 to rotate. The top of the connecting rod 7 is rotatably connected to a rotating block 8, and the front end of the rotating block 8 is rotatably connected to a cross bar 9. The connecting rod 7 can drive the rotating block 8 and the cross bar 9 to rotate, and the rotating block 8 can adjust the up and down angles. The front end of the cross bar 9 is fixedly connected to a swivel joint 10, and two adapter rods 11 are rotatably fixed inside the swivel joint 10. The swivel joint 10 can fix the adapter rods 11 to prevent shaking during work. The adjacent ends of the two adapter rods 11 are rotatably connected to a linkage disc 12. The left and right sides of the linkage disc 12 are slidably connected to a pull rod 21. The bottom of the pull rod 21 is rotatably connected to a connecting rod 22. The linkage disc 12 can make the pull rod 21 slide inside, and the pull rod 21 can pull the connecting rod 22 to move. The bottom of the connecting rod 22 is rotatably connected to a fixing assembly for restricting subsequent workpieces. The fixing assembly includes two linkage blocks 23. When the connecting rod 22 moves, it can drive the linkage blocks 23 to move. The top of the linkage blocks 23 is rotatably connected to the bottom of the connecting rod 22. The remote ends of the two linkage blocks 23 are both fixedly connected to restricting blocks 24;

[0036] When the linkage blocks 23 move, they can drive the restricting blocks 24 to move. The remote ends of the two restricting blocks 24 are both fixedly connected to springs 25, and the restricting blocks 24 can compress the springs 25. The remote ends of the two springs 25 are both fixedly connected to latch blocks 26, so that the springs 25 pull the latch blocks 26 to move. The outside of the restricting block 24 is slidably connected to a connecting shell 27, and the connecting shell 27 provides a sliding component for the restricting block 24. The outside of the linkage block 23 is slidably connected inside the connecting shell 27. The linkage block 23 can pull the connecting shell 27 to move. The outside of the latch block 26 is slidably connected inside the connecting shell 27. When the connecting shell 27 moves, it can drive the latch block 26 to move;

[0037] Refer to Figure 3 - Figure 5. A protective shell 13 is fixedly connected to the bottom of the linkage disc 12. The protective shell 13 can be clamped by the clamping block 26 to prevent it from falling. The bottom of the connecting shell 27 is slidably connected inside the protective shell 13. The outer end of the clamping block 26 is engaged with the protective shell 13. Through the engagement of the clamping block 26, quick disassembly and replacement can be achieved, so as to grasp workpieces of various shapes. A clamping assembly for fixing the workpiece is fixedly connected inside the protective shell 13. The clamping assembly includes a hydraulic cylinder 14. The top of the hydraulic cylinder 14 is fixedly connected inside the protective shell 13. The hydraulic cylinder 14 can be fixed by the protective shell 13. The driving end of the hydraulic cylinder 14 is fixedly connected with a rack plate 15. The hydraulic cylinder 14 can push the rack plate 15 to move up and down. Two limiting rods 16 are fixedly connected to the left and right sides inside the protective shell 13. One pair of adjacent ends of the limiting rods 16 are rotatably connected with gears 17. The limiting rods 16 can fix the gears 17 at a certain location, and then achieve the rotation effect. Two limiting rods 18 are fixedly connected to the left and right sides inside the protective shell 13. One pair of adjacent ends of the limiting rods 18 are rotatably connected with sector gear blocks 19;

[0038] The limiting rods 18 can fix the sector gear blocks 19 at a certain location. A clamping block 20 is fixedly connected to the bottom of the sector gear block 19. The clamping block 20 can clamp and fix the workpiece. The left and right outer sides of the rack plate 15 are engaged with the two gears 17. When the rack plate 15 moves, it can drive the gears 17 to move. The gears 17 are meshed with the sector gear blocks 19. When the gears 17 are driven, they can drive the sector gear blocks 19 to move, so that the clamping blocks 20 at the bottom move. The rack plate 15 and the two clamping blocks 20 can clamp the workpiece, and the fixing effect of the three-way clamping is more obvious.

[0039] Working principle: When the device needs to clamp an object, the movement of the slider 3 on the surface of the slide rail 2 can drive the whole device to move. At this time, start the motor 5 to drive the rotating block 6 to rotate, so that the device can adjust the clamping angle of the object. Then, use the hydraulic cylinder 14 to push the rack plate 15 to move downward. When the rack plate 15 moves, it can drive the two gears 17 to rotate. When the two gears 17 rotate, they can drive the two sector gear blocks 19 to rotate, so that the clamping blocks 20 connected to the bottom of the sector gear blocks 19 clamp inward. At this time, the inward movement of the bottom of the rack plate 15 and the two clamping blocks 20 can clamp the article in three directions, making the article fixed more firmly.

[0040] When facing items of various shapes and sizes, the connecting rod 22 can be moved to one side by pulling the pull rod 21, so that the linkage block 23 can be pulled. When the linkage block 23 is pulled, the limiting block 24 fixed on one side of the linkage block 23 can drive the spring 25 to move. At this time, the limiting block 24 connected to the other side can drive the clamping block 26 out of the inside of the protective shell 13, so that the protective shell 13 can be replaced and separated, and the internal clamping hand can be replaced.

[0041] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mechanical gripper applicable to the clamping and placing of workpieces of various shapes, including a housing (1), characterized in that: Inside the housing (1), a slide rail (2) is fixedly connected. At the top of the slide rail (2), a slider (3) is slidably connected. At the top of the slider (3), a tray (4) is fixedly connected. Inside the tray (4), a rotating assembly for rotating subsequent workpieces is fixedly connected. At the top of the rotating assembly, a connecting rod (7) is rotatably connected. At the top of the connecting rod (7), a rotating block (8) is rotatably connected. At the front end of the rotating block (8), a cross bar (9) is rotatably connected. At the front end of the cross bar (9), a swivel joint (10) is fixedly connected. Inside the swivel joint (10), two adapter rods (11) are rotatably and fixedly connected. At the adjacent ends of the two adapter rods (11), a linkage disk (12) is rotatably connected. On the left and right sides of the linkage disk (12), a pull rod (21) is slidably connected. At the bottom of the pull rod (21), a connecting rod (22) is rotatably connected. At the bottom of the connecting rod (22), a fixing assembly for restricting subsequent workpieces is rotatably connected. At the bottom of the linkage disk (12), a protective housing (13) is fixedly connected. Inside the protective housing (13), a clamping assembly for fixing workpieces is fixedly connected.

2. The mechanical gripper applicable to clamping and placing workpieces of various shapes according to claim 1, characterized in that: The rotating assembly includes a motor (5). The outside of the motor (5) is fixedly connected inside the tray (4). The driving end of the motor (5) is fixedly connected with a rotating block (6).

3. The mechanical gripper applicable to the clamping and placing of workpieces of various shapes according to claim 1, characterized in that: The fixing assembly includes two linkage blocks (23). The tops of the linkage blocks (23) are rotatably connected to the bottom of the connecting rod (22). At the remote ends of the two linkage blocks (23), a limiting block (24) is fixedly connected to each. At the remote ends of the two limiting blocks (24), a spring (25) is fixedly connected to each. At the remote ends of the two springs (25), a clamping block (26) is fixedly connected to each. The outside of the limiting block (24) is slidably connected with a connecting shell (27).

4. A mechanical gripper applicable to the clamping and placement of workpieces of various shapes according to claim 1, characterized in that: The clamping assembly includes a hydraulic cylinder (14). The top of the hydraulic cylinder (14) is fixedly connected inside the protective housing (13). The driving end of the hydraulic cylinder (14) is fixedly connected with a rack plate (15). On the left and right sides inside the protective housing (13), two first limiting rods (16) are fixedly connected to each. At the adjacent ends of one pair of the first limiting rods (16), a gear (17) is rotatably connected to each. On the left and right sides inside the protective housing (13), two second limiting rods (18) are fixedly connected to each. At the adjacent ends of one pair of the second limiting rods (18), a sector gear block (19) is rotatably connected to each. At the bottom of the sector gear block (19), a clamping block (20) is fixedly connected.

5. The mechanical gripper applicable to the clamping and placement of workpieces of various shapes according to claim 2, characterized in that: The top of the tray (4) is in contact with the bottom of the rotating block (6). The top of the rotating block (6) is rotatably connected to the bottom of the connecting rod (7).

6. The mechanical gripper applicable to clamping and placing workpieces of various shapes according to claim 3, characterized in that: The outside of the linkage block (23) is slidably connected inside the connecting shell (27). The outside of the clamping block (26) is slidably connected inside the connecting shell (27).

7. The mechanical gripper applicable to clamping and placing workpieces of various shapes according to claim 6, wherein: The bottom of the connecting shell (27) is slidably connected inside the protective housing (13). The outside end of the clamping block (26) is engaged with the protective housing (13).

8. A mechanical gripper applicable to the clamping and placement of workpieces of various shapes according to claim 4, characterized in that: The left and right outer sides of the rack plate (15) are meshed with the two gears (17), and the gears (17) are meshed with the sector gear block (19).

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