Automatic projection welding gripper device
By designing an automatic projection welding gripper device and using a flip plate and gear structure to adjust the contact surface, the problem of insufficient contact points of existing grippers on curved workpieces is solved, and stable gripping of workpieces and improved adaptability are achieved.
Patent Information
- Application Number
- CN202422798340.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing grippers have fewer contact points when handling curved workpieces, resulting in unstable sliding of parts and difficulty adapting to workpieces of different sizes and shapes, especially narrow parts, which are difficult to grasp effectively.
An automatic projection welding gripper device was designed, which included components such as a robotic arm connecting frame, a support frame, a tightening block, a moving block, a flip plate and a gripping plate. The contact surface was adjusted by the flip plate and the gear structure, and combined with a fixed screw and an anti-slip pad, it could achieve stable gripping of workpieces of different shapes and sizes.
It improves the stability and adaptability of the workpiece, simplifies the operation process, improves the replacement efficiency, reduces the risk of workpiece slipping, and adapts to the processing needs of workpieces of different shapes and sizes.
Smart Images
Figure CN223368453U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of parts production, in particular to an automatic projection welding gripper device. Background Art
[0002] During the processing of automotive parts, projection welding is required. Its characteristic is that one or more convex points are pre-processed on the fitting surface of a workpiece, and then these convex points are brought into contact with the surface of another workpiece and heated by electricity. Finally, pressure is used to collapse the contact points and form welds. In order to ensure the projection welding position of the parts, a robot gripper is used to grab the workpiece and accurately place it on the projection welding positioning pin for processing.
[0003] In the prior art, the components are mainly grasped on the gripper by tightening the gripper toward the middle. However, the existing gripper device has certain limitations during use. When the surface of the workpiece to be grasped is arc-shaped and the gripper contact surface is flat, there are fewer contact points with the workpiece. During processing, the components are prone to sliding and other unstable phenomena, which is inconvenient to use. Moreover, there are many sizes of components. When the component is narrow, the space between the two sides of the component and the gripper fulcrum is large, making it difficult to press against the two sides of the component and grasp it. Therefore, an automatic projection welding gripper device is proposed to solve the above problems. Utility Model Content
[0004] The purpose of the present utility model is to solve the shortcomings in the prior art that when the surface of the workpiece to be grasped is in an arc shape and the contact surface of the gripper is a plane, there are fewer contact points with the workpiece, the parts are prone to sliding and other unstable phenomena during processing, it is inconvenient to use, and there are various sizes of parts. When the parts are narrow, the space between the two sides of the parts and the gripper fulcrum is large, making it difficult to press against the two sides of the parts and grasp them. An automatic projection welding gripper device is proposed to solve the above problems.
[0005] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:
[0006] An automatic projection welding gripper device, comprising:
[0007] A robotic arm connecting frame and a support frame, the support frame is fixedly mounted on the robotic arm connecting frame, and a tightening block is provided at the bottom of the support frame, the automobile workpiece to be processed is clamped between two groups of tightening blocks, a moving block is provided at the bottom of the tightening block, and a gripping plate is fixedly provided on the outer wall of the moving block, the outer wall of the moving block is rotatably connected to the first flip plate through a bearing, and the outer wall of the first flip plate is fixedly provided with a first gear, the outer wall of the moving block is rotatably connected to the second flip plate through a bearing, and the outer wall of the first flip plate is fixedly provided with a second gear, and the outer wall of the first gear is meshed with the outer wall of the second gear.
[0008] Preferably, the bottom of the second flip plate passes through the moving block and extends downward, and a rotating plate is fixedly provided on the bottom of the second flip plate.
[0009] Preferably, an inserting hole is provided on the outer wall of the rotating plate, and a fixing screw is movably inserted into the inner wall of the inserting hole.
[0010] Preferably, the bottom of the moving block is provided with positioning screw holes, and multiple groups of positioning screw holes are provided, and the top of the fixing screw is threadedly connected in the corresponding positioning screw hole.
[0011] Preferably, a groove is provided on the top of the moving block, and a bayonet is provided on the inner wall of the groove provided on the top of the moving block.
[0012] Preferably, a connecting block is fixedly provided at the bottom of the tightening block, a groove is provided on the outer wall of the connecting block, a clamping block is movably engaged with the inner wall of the groove provided on the outer wall of the connecting block, and the clamping block is docked and engaged in the corresponding bayonet.
[0013] Preferably, a compression spring is fixedly provided on the inner wall of the groove formed on the outer wall of the connecting block, and the other end of the compression spring is fixedly provided on the outer wall of the clamping block.
[0014] Preferably, an anti-slip pad is fixedly adhered to the outer wall of the gripping plate.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] 1. In the utility model, a connection relationship among a robot arm connecting frame, a supporting frame, a connecting block, a moving block, a grasping plate, a first flip plate and a second flip plate is set, so that by aligning the connecting block with the moving block and pushing the moving block upward, the clamping block moves outward and is clamped in the corresponding bayonet, so that the moving block is fixedly installed at the bottom of the tightening block, and the clamping block is pressed inwardly through the bayonet to disengage the clamping block from the bayonet, and the moving block is pulled downward to be removed from the tightening block, so that the installation orientation of the moving block can be adjusted. When the outer wall of the workpiece to be grasped is flat, the grasping plate on the moving block is installed inward. When the outer wall of the workpiece to be grasped is curved, the first flip plate and the second flip plate on the moving block are inward, so that the corresponding position can be selected according to the state of the outer wall of the workpiece to be grasped, thereby improving its practicality, and the operation is simple and fast, improving replacement efficiency, and promoting production. Moreover, by rotating the second flip plate to drive the first flip plate to rotate, the angle between the first flip plate and the second flip plate is adjusted, which is convenient for adjustment according to the width of the automobile workpiece to be clamped, and convenient for use.
[0017] 2. In the present invention, by setting the connection relationship between the first flip plate, the second flip plate, the rotating plate, the insertion hole, the fixing screw and the positioning screw hole, after the first flip plate and the second flip plate are rotated to the required position, the insertion hole is aligned with the corresponding positioning screw hole. At this time, by passing the fixing screw through the insertion hole and inserting it into the corresponding positioning screw hole, the fixing screw is tightened in the positioning screw hole by rotating the fixing screw, so that the position of the rotating plate is fixed, thereby fixing the use position of the first flip plate and the second flip plate, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0019] In the attached figure:
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the moving block of the utility model;
[0022] Figure 3 This is a cross-sectional view of the connecting block structure of the present utility model;
[0023] Figure 4 This is a schematic diagram of the rotating plate structure of the present utility model.
[0024] Serial numbers in the figure: 1. Robot arm connecting frame; 2. Support frame; 201. Tightening block; 202. Connecting block; 203. Extrusion spring; 204. Clamping block; 3. Moving block; 301. Bayonet; 4. Grasping plate; 5. First flip plate; 501. Second flip plate; 502. First gear; 503. Second gear; 504. Rotating plate; 505. Jack; 506. Fixing screw; 507. Positioning screw hole. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.
[0026] Example: This example provides an automatic projection welding gripper device, see Figure 1-4 , specifically, including:
[0027] The robot arm connecting frame 1 and the support frame 2, the support frame 2 is fixedly installed on the robot arm connecting frame 1, and a tightening block 201 is provided at the bottom of the support frame 2, the automobile workpiece to be processed is clamped between the two sets of tightening blocks 201, and a driving device is provided on the support frame 2. When the driving device is started, the two sets of tightening blocks 201 are tightened inward, so that the automobile workpiece to be processed is clamped and fixed, which is convenient for the subsequent transportation of the automobile workpiece to be processed to the projection welding equipment for projection welding operation. A moving block 3 is provided at the bottom of the tightening block 201, and a gripping plate 4 is fixedly provided on the outer wall of the moving block 3. The outer wall of the moving block 3 is rotatably connected to the first flip plate 5 through a bearing, and the outer wall of the first flip plate 5 is fixedly provided with a first gear 502. The moving block 3 The outer wall is rotatably connected to the second flip plate 501 through a bearing, and the outer wall of the first flip plate 5 is fixedly provided with a second gear 503, and the outer wall of the first gear 502 is meshed with the outer wall of the second gear 503. When in use, the first flip plate 5 and the second flip plate 501 are rotated to the inside by flipping the moving block 3, and by rotating the second flip plate 501 inward, the second gear 503 is driven to rotate inward, so that the outer wall of the inwardly rotating second gear 503 squeezes and pushes the first gear 502, so that the first gear 502 drives the first flip plate 5 to rotate inward, causing the first flip plate 5 and the second flip plate 501 to retract inward, which is convenient for adjustment according to the size of the automobile workpiece to be clamped and convenient for use.
[0028] The bottom of the second flip plate 501 extends downward through the moving block 3. A rotating plate 504 is fixedly provided at the bottom of the second flip plate 501 for extending the action point of the second flip plate 501 to facilitate control of the use position of the first flip plate 5 and the second flip plate 501.
[0029] The outer wall of the rotating plate 504 is provided with an insertion hole 505, and the inner wall of the insertion hole 505 is movably inserted with a fixing screw 506. The bottom of the moving block 3 is provided with a positioning screw hole 507, and there are multiple groups of positioning screw holes 507. The top of the fixing screw 506 is threadedly connected to the corresponding positioning screw hole 507. When the first flip plate 5 and the second flip plate 501 are rotated to the required position, the insertion hole 505 is aligned with the corresponding positioning screw hole 507. At this time, by passing the fixing screw 506 through the insertion hole 505 and inserting it into the corresponding positioning screw hole 507, the fixing screw 506 is tightened in the positioning screw hole 507 by rotating the fixing screw 506, so that the position of the rotating plate 504 is fixed, thereby fixing the use position of the first flip plate 5 and the second flip plate 501, thereby improving stability.
[0030] The top of the moving block 3 is provided with a groove, and the inner wall of the groove provided on the top of the moving block 3 is provided with a bayonet 301. The bottom of the tightening block 201 is fixedly provided with a connecting block 202. The outer wall of the connecting block 202 is provided with a groove. The inner wall of the groove provided on the outer wall of the connecting block 202 is movably connected with a clamping block 204, and the clamping block 204 is docked and clamped in the corresponding bayonet 301. The inner wall of the groove provided on the outer wall of the connecting block 202 is fixedly provided with an extrusion spring 203, and the other end of the extrusion spring 203 is fixedly provided on the outer wall of the clamping block 204. When in use, the orientation of the moving block 3 is rotated appropriately according to the workpiece to be grasped, and the top of the moving block 3 is aligned with the connecting block 202, and the moving block 3 is pushed upward to make the moving block 3 tighten. The movable block 3 is sleeved on the outer wall of the connecting block 202. At this time, the clamping block 204 is aligned with the corresponding clamping slot 301. The clamping block 204 is pushed outward by the driving force of the extrusion spring 203, so that the clamping block 204 moves outward and is clamped in the corresponding clamping slot 301, so that the movable block 3 is fixedly installed on the bottom of the tightening block 201, and the clamping block 204 is pressed inward through the clamping slot 301, so that the clamping block 204 is disengaged from the clamping slot 301. At this time, by pulling the movable block 3 downward, the movable block 3 is driven to disengage from the connecting block 202, which is convenient for disassembling the movable block 3 from the tightening block 201, and it is convenient to change the use orientation of the movable block 3, thereby improving its practicality. The operation is simple and quick, which improves the replacement efficiency and promotes production.
[0031] The outer wall of the gripping plate 4 is fixed with an anti-slip pad, and the outer walls of the first flip plate 5 and the second flip plate 501 are also provided with anti-slip pads to facilitate contact with the workpiece, increase the friction between the workpiece, reduce the phenomenon of the workpiece slipping, and reduce damage to the workpiece.
[0032] Specifically, the working principle and operation method of the utility model are as follows:
[0033] When in use, the orientation of the corresponding moving block 3 is selected according to the state of the outer wall of the workpiece to be grasped. When the outer wall of the workpiece to be grasped is flat, the gripping plate 4 on the moving block 3 is inward. At this time, the connecting block 202 is aligned with the moving block 3. The moving block 3 is pushed upward so that the moving block 3 is sleeved on the outer wall of the connecting block 202. At this time, the clamping block 204 is aligned with the corresponding bayonet 301. The clamping block 204 is pushed outward by the pushing force of the extrusion spring 203, so that the clamping block 204 moves outward and is stuck in the corresponding bayonet 301, so that the moving block 3 is fixedly installed at the bottom of the tightening block 201. The robot arm connecting frame 1 drives the supporting frame 2 and the two sets of gripping plates 4 to move to the workpiece to be processed. The driving mechanism is started to enable the two sets of gripping plates to be fixed. When the clamping plate 4 moves inwards, the workpiece to be processed is grasped. When the outer wall of the workpiece to be grasped is curved, the clamping block 204 is pressed inwards through the bayonet 301 to disengage the clamping block 204 from the bayonet 301. At this time, the moving block 3 is pulled downwards to drive the moving block 3 to disengage the connecting block 202, which is convenient for removing the moving block 3 from the tightening block 201. By flipping the moving block 3, the first flip plate 5 and the second flip plate 501 are turned inwards, and the clamping block 204 is similarly stuck in the bayonet 301, so that the moving block 3 is reinstalled on the bottom of the tightening block 201, which is convenient for use and easy to change the use orientation of the moving block 3, thereby improving its practicality, and the operation is simple and fast, thereby improving replacement efficiency and promoting production.
[0034] When in use, by rotating the second flip plate 501, the second gear 503 is driven to rotate, so that the outer wall of the rotating second gear 503 squeezes and pushes the first gear 502, so that the first gear 502 drives the first flip plate 5 to rotate, so that the angle between the first flip plate 5 and the second flip plate 501 is adjusted, which is convenient for adjustment according to the width of the automobile workpiece to be clamped, and convenient for use. When the first flip plate 5 and the second flip plate 501 are rotated to the required position, the socket 505 is aligned with the corresponding positioning screw hole 507. At this time, by passing the fixing screw 506 through the socket 505 and inserting it into the corresponding positioning screw hole 507, by rotating the fixing screw 506, the fixing screw 506 is tightened in the positioning screw hole 507, so that the position of the rotating plate 504 is fixed, thereby fixing the use position of the first flip plate 5 and the second flip plate 501, which is convenient for improving stability.
[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An automatic projection welding gripper device, comprising a robot arm connecting frame (1) and a support frame (2), wherein the support frame (2) is fixedly mounted on the robot arm connecting frame (1), and a tightening block (201) is provided at the bottom of the support frame (2), and an automobile workpiece to be processed is clamped between two sets of the tightening blocks (201), characterized in that: A moving block (3) is provided at the bottom of the tightening block (201), and a gripping plate (4) is fixedly provided on the outer wall of the moving block (3); the outer wall of the moving block (3) is rotatably connected to a first flip plate (5) via a bearing, and a first gear (502) is fixedly provided on the outer wall of the first flip plate (5); the outer wall of the moving block (3) is rotatably connected to a second flip plate (501) via a bearing, and a second gear (503) is fixedly provided on the outer wall of the first flip plate (5); the outer wall of the first gear (502) is meshedly connected to the outer wall of the second gear (503).
2. The automatic projection welding gripper device according to claim 1, characterized in that: The bottom of the second flip plate (501) passes through the moving block (3) and extends downwards, and a rotating plate (504) is fixedly provided on the bottom of the second flip plate (501).
3. The automatic projection welding gripper device according to claim 2, characterized in that: An inserting hole (505) is provided on the outer wall of the rotating plate (504), and a fixing screw (506) is movably inserted into the inner wall of the inserting hole (505).
4. The automatic projection welding gripper device according to claim 1, characterized in that: The bottom of the movable block (3) is provided with a positioning screw hole (507), and there are multiple groups of positioning screw holes (507). The top of the fixed screw rod (506) is threadedly connected in the corresponding positioning screw hole (507).
5. The automatic projection welding gripper device according to claim 4, characterized in that: A groove is provided on the top of the moving block (3), and a bayonet (301) is provided on the inner wall of the groove provided on the top of the moving block (3).
6. The automatic projection welding gripper device according to claim 5, characterized in that: A connecting block (202) is fixedly provided at the bottom of the tightening block (201), a groove is provided on the outer wall of the connecting block (202), a clamping block (204) is movably engaged with the inner wall of the groove provided on the outer wall of the connecting block (202), and the clamping block (204) is docked and engaged in the corresponding clamping port (301).
7. The automatic projection welding gripper device according to claim 6, characterized in that: An extrusion spring (203) is fixedly arranged on the inner wall of the groove formed on the outer wall of the connecting block (202), and the other end of the extrusion spring (203) is fixedly arranged on the outer wall of the clamping block (204).
8. The automatic projection welding gripper device according to claim 1, characterized in that: An anti-slip pad is fixedly adhered to the outer wall of the gripping plate (4).