Flexible clamping assembly for laser cutting

Abstract

The utility model discloses a flexible clamping assembly for laser cutting, include: workstation, clamping mechanism, including symmetrically setting drive piece on the workstation, with drive piece intercommunication's air pipe, intercommunication setting sealing element on air pipe, set up in drive piece output's mounting frame and the clamping portion of sliding setting in mounting frame, the lateral wall of mounting frame and located drive piece's both ends all are provided with air cylinder no.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting equipment technology, and in particular to a flexible clamping component for laser cutting. Background Technology

[0002] Currently, traditional laser cutting clamping methods mainly employ rigid clamps, such as vises and chucks, which mechanically fix the workpiece in place. However, for workpieces made of easily deformable or special materials, rigid clamps can easily cause indentations, deformation, or even damage to the workpiece surface due to uneven or excessive clamping force, severely affecting processing quality. Therefore, a flexible clamping component for laser cutting is proposed to solve this problem. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0004] Flexible clamping components for laser cutting include:

[0005] Workbench;

[0006] The clamping mechanism includes a drive unit symmetrically arranged on the worktable, an air inlet pipe communicating with the drive unit, a sealing element communicating with the air inlet pipe, a mounting frame disposed at the output end of the drive unit, and a clamping part slidably disposed within the mounting frame. A cylinder is disposed on the side wall of the mounting frame and at both ends of the drive unit. A piston rod is fixedly disposed on one side of the clamping part, corresponding to the position and number of cylinders. The end of the piston rod away from the clamping part passes through the mounting frame and extends into the cylinder. A piston is disposed at the end of the piston rod extending into the cylinder. A unidirectional air outlet pipe is connected to the end of the cylinder, and the air outlet pipe communicates with the sealing element.

[0007] In this process, compressed gas is input into the drive unit through the air inlet pipe, causing the drive unit to move and drive the clamping parts to move towards each other to clamp the workpiece. When the clamping parts are displaced in the opposite direction to the clamping direction due to the reaction force of the clamped workpiece, they drive the piston rod and piston to move into the cylinder, compressing the gas in the cylinder. The compressed gas flows into the seal through the air outlet pipe in one direction, pushing the seal to close the air inlet pipe.

[0008] As an improvement to the above technical solution, the clamping part includes a sliding plate slidably disposed inside the mounting frame, a clamping plate fixedly disposed on one side of the sliding plate, and a spring disposed between the sliding plate and the inner wall of the mounting frame, and the piston rod is fixedly connected to the side wall of the sliding plate.

[0009] As an improvement to the above technical solution, the driving component includes a second cylinder, a second piston rod movably inserted into the end of the second cylinder, and a second piston disposed at the end of the second piston rod. The end of the second piston rod away from the second piston is fixedly connected to the mounting frame. A third spring is wound around the surface of the second piston rod and inside the second cylinder. An air outlet pipe is connected to the side wall of the second cylinder and the end near the worktable. A solenoid valve is installed inside the air outlet pipe.

[0010] As an improvement to the above technical solution, the sealing element includes a fixed cylinder connected to the air inlet pipe, a sealing plug movably disposed inside the fixed cylinder, and a second spring disposed between the fixed cylinder and the sealing plug, wherein the fixed cylinder is connected to the air outlet pipe.

[0011] The beneficial effects of this utility model are:

[0012] When the clamping part is displaced by the reaction force of the workpiece, the piston and compressed gas push the seal to cut off the gas source, automatically adjust and keep the clamping force constant, and realize flexible buffering. Compared with traditional rigid clamping, it can effectively avoid workpiece surface indentation, deformation and damage caused by excessive or uneven clamping force. Attached Figure Description

[0013] Figure 1 This is a front view of the overall structure of this utility model;

[0014] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0015] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B.

[0016] Reference numerals: 10. Workbench; 20. Mounting frame; 201. Cylinder 1; 202. Piston rod 1; 203. Piston 1; 204. Exhaust pipe 1; 21. Clamping plate; 22. Sliding plate; 23. Spring 1; 24. Cylinder 2; 25. Piston rod 2; 26. Exhaust pipe 2; 27. Inlet pipe; 28. Fixed cylinder; 29. ​​Sealing plug; 210. Spring 2. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Flexible clamping components for laser cutting include:

[0019] Workbench 10;

[0020] The clamping mechanism includes a drive unit symmetrically arranged on the worktable 10, an air inlet pipe 27 communicating with the drive unit, a sealing element communicating with the air inlet pipe 27, a mounting frame 20 disposed at the output end of the drive unit, and a clamping part slidably disposed within the mounting frame 20. A cylinder 201 is provided on the side wall of the mounting frame 20 at both ends of the drive unit. A piston rod 202 corresponding to the position and number of cylinders 201 is fixedly provided on one side of the clamping part. The end of the piston rod 202 away from the clamping part passes through the mounting frame 20 and extends into the cylinder 201. A piston 203 is provided at the end of the piston rod 202 extending into the cylinder 201. A unidirectional air outlet pipe 204 is connected to the end of the cylinder 201, and the air outlet pipe 204 communicates with the sealing element.

[0021] In this process, compressed gas is input into the drive unit through the air inlet pipe 27, causing the drive unit to move and drive the clamping parts to move towards each other to clamp the workpiece. When the clamping parts are displaced in the opposite direction to the clamping direction due to the reaction force of the clamped workpiece, the piston rod 202 and piston 203 are driven to move into the cylinder 201, compressing the gas in the cylinder 201. The compressed gas flows into the seal through the air outlet pipe 204 in one direction, pushing the seal to close the air inlet pipe 27.

[0022] Specifically, compressed gas is introduced into the drive unit, the mounting frame 20 is in the initial position, waiting for the workpiece to be placed, the cylinder 201 is filled with atmospheric pressure gas, the outlet pipe 204 is kept closed due to the action of the one-way valve, the gas cannot flow out, the seal is not pushed by the gas and is in the initial position, the inlet pipe 27 remains unobstructed, and compressed gas can be introduced normally; workpiece clamping process: compressed gas is introduced into the drive unit through the inlet pipe 27, the drive unit pushes the mounting frame 20 under the action of air pressure, causing the clamping parts on both sides to move towards each other, contact and clamp the workpiece. After the clamping parts contact the workpiece, as the drive unit continues to supply air, the clamping force gradually increases, and the workpiece reaction force generates a force opposite to the clamping direction. The reverse displacement causes the clamping part to move, driving the piston rod 202 into the cylinder 201, pushing the piston 203 to compress the gas in the cylinder 201. At this time, the one-way valve of the outlet pipe 204 opens, and the compressed gas flows into the seal through the outlet pipe 204. The compressed gas flowing into the seal pushes the internal sealing plug to move, cutting off the airflow channel of the inlet pipe 27 and preventing the compressed gas from continuing to enter the drive component. At this time, the air pressure inside the drive component remains constant, maintaining the current clamping force, realizing flexible buffering, avoiding workpiece deformation or damage due to rigid clamping, realizing adaptive adjustment of clamping force, and avoiding the problem of over-clamping and workpiece damage.

[0023] In one embodiment, the clamping part includes a sliding plate 22 slidably disposed inside the mounting frame 20, a clamping plate 21 fixedly disposed on one side of the sliding plate 22, and a spring 23 disposed between the sliding plate 22 and the inner wall of the mounting frame 20. The piston rod 202 is fixedly connected to the side wall of the sliding plate 22. The air inlet pipe 27 supplies air to the driving component. The driving component pushes the mounting frame 20 to move as a whole, so that the clamping plates 21 on both sides move closer to the workpiece. After the clamping plates 21 contact the surface of the workpiece, the driving component continues to move, and the clamping force increases. The reaction force received by the clamping plate 21 compresses the spring 23 through the sliding plate 22. The elastic deformation of the spring 23 can absorb the impact force during the clamping process and avoid rigid contact that could cause indentation or deformation on the surface of the workpiece.

[0024] After the drive unit exhausts the gas, the mounting frame 20 moves in the opposite direction, the clamping plate 21 releases the workpiece, the spring 23 releases its elastic potential energy, pushes the sliding plate 22 back to its initial position, the piston rod 202 and the piston 203 reset synchronously, and the cylinder 201 extracts the gas from the seal, so that the seal resets.

[0025] In one embodiment, the driving component includes a second cylinder 24, a second piston rod 25 movably inserted into the end of the second cylinder 24, and a second piston disposed at the end of the second piston rod 25. The end of the second piston rod 25 away from the second piston is fixedly connected to the mounting frame 20. A third spring is wound around the surface of the second piston rod 25 and inside the second cylinder 24. An air outlet pipe 26 is connected to the side wall of the second cylinder 24 near the worktable 10. A solenoid valve is installed inside the air outlet pipe 26. Compressed air enters the second cylinder 24 through the air inlet pipe 27, pushing the second piston towards the workpiece. As the piston moves, piston two extends piston rod two 25, pushing mounting frame 20 and clamping part towards the workpiece until the workpiece is clamped. During the movement of piston two, spring three is compressed, storing elastic potential energy. If the reaction force of the workpiece triggers the displacement of the clamping part, the gas in cylinder one 201 is compressed through piston rod one 202, pushing the seal to cut off the air inlet pipe 27 and maintaining the current air pressure. When it is necessary to release the workpiece, the air outlet pipe two 26 is opened through the solenoid valve, spring three releases elastic potential energy, pushing piston two to move away from the workpiece, and piston rod two 25 drives mounting frame 20 and clamping part back to the initial position, releasing the workpiece.

[0026] In one embodiment, the sealing element includes a fixed cylinder 28 connected to the air inlet pipe 27, a sealing plug 29 movably disposed within the fixed cylinder 28, and a spring 210 disposed between the fixed cylinder 28 and the sealing plug 29. The fixed cylinder 28 is connected to the air outlet pipe 204. The tension of the spring 210 causes the sealing plug 29 to move away from the air inlet pipe 27, allowing the gas in the air inlet pipe 27 to freely enter the cylinder 24. At this time, the state of the air outlet pipe 204 is as follows: the gas in the cylinder 201 is not compressed, the one-way valve of the air outlet pipe 204 is closed, and there is no gas flow between the fixed cylinder 28 and the cylinder 201.

[0027] Triggering the sealing stage: When the workpiece's reaction force causes the sliding plate 22 of the clamping part to shift, the piston rod 202 compresses the gas in cylinder 201. The compressed gas in cylinder 201 flows into the fixed cylinder 28 through the one-way valve in the outlet pipe 204, acting on the sealing plug 29. When the gas pressure is greater than the elastic force of spring 210, the sealing plug 29 moves into the inlet pipe 27, gradually reducing the flow area of ​​the inlet pipe 27. When the sealing plug 29 cuts off the gas passage in the inlet pipe 27, the driving component stops the air intake, maintaining the current clamping force.

[0028] When the operation is released, the solenoid valve opens the outlet pipe 26, allowing the gas inside the cylinder 24 to flow out. The spring 3 drives the piston 2 to reset, causing the clamping part to loosen. The clamping part drives the piston rod 1 and the piston 1 to move, causing the pressure in the cylinder 201 to drop. The sealing plug 29 resets, and the inlet pipe 27 is reopened.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A flexible clamping assembly for laser cutting, characterized in that, include: Workbench (10); The clamping mechanism includes a drive unit symmetrically arranged on the worktable (10), an air inlet pipe (27) communicating with the drive unit, a sealing member communicating with the air inlet pipe (27), a mounting frame (20) disposed at the output end of the drive unit, and a clamping part slidably disposed within the mounting frame (20). A cylinder (201) is provided on the side wall of the mounting frame (20) and at both ends of the drive unit. A clamping part is fixedly disposed on one side with a cylinder (201). 01) A piston rod (202) with a position and quantity corresponding to each other. The end of the piston rod (202) away from the clamping part passes through the mounting frame (20) and extends into the cylinder (201). A piston (203) is provided at the end of the piston rod (202) extending into the cylinder (201). A unidirectional air outlet pipe (204) is connected to the end of the cylinder (201). The air outlet pipe (204) is connected to the sealing element. In this process, compressed gas is input into the drive unit through the air inlet pipe (27), causing the drive unit to move and drive the clamping parts to move towards each other to clamp the workpiece. When the clamping parts are subjected to the reaction force of the clamped workpiece and generate a displacement opposite to the clamping direction, the piston rod (202) and piston (203) are driven to move into the cylinder (201), compressing the gas in the cylinder (201). The compressed gas flows into the seal through the air outlet pipe (204) in one direction, pushing the seal to move and close the air inlet pipe (27).

2. The flexible clamping assembly for laser cutting according to claim 1, characterized in that: The clamping part includes a sliding plate (22) slidably disposed inside the mounting frame (20), a clamping plate (21) fixedly disposed on one side of the sliding plate (22), and a spring (23) disposed between the sliding plate (22) and the inner wall of the mounting frame (20). The piston rod (202) is fixedly connected to the side wall of the sliding plate (22).

3. The flexible clamping assembly for laser cutting according to claim 2, characterized in that: The driving component includes a second cylinder (24), a second piston rod (25) movably inserted into the end of the second cylinder (24), and a second piston disposed at the end of the second piston rod (25). The end of the second piston rod (25) away from the second piston is fixedly connected to the mounting frame (20). A third spring is wound on the surface of the second piston rod (25) and inside the second cylinder (24). An exhaust pipe (26) is connected to the side wall of the second cylinder (24) and the end near the worktable (10). A solenoid valve is installed inside the exhaust pipe (26).

4. The flexible clamping assembly for laser cutting according to claim 3, characterized in that: The sealing element includes a fixed cylinder (28) connected to the air inlet pipe (27), a sealing plug (29) movably disposed inside the fixed cylinder (28), and a second spring (210) disposed between the fixed cylinder (28) and the sealing plug (29). The fixed cylinder (28) is connected to the first air outlet pipe (204).

Images