Workpiece positioning device of laser cutting machine

Abstract

The utility model relates to the technical field of workpiece positioning devices, and discloses a workpiece positioning device of a laser cutting machine, which comprises a bottom plate, a rotating block and an adjusting assembly, the adjusting assembly is arranged at the top of the bottom plate, the rotating block is arranged at the top of the bottom plate, and a first rotating shaft is rotatably connected in the rotating block. The exterior of the first rotating shaft is fixedly connected with a first universal chuck, the interior of the rotating block is rotatably connected with a threaded rod, the exterior of the threaded rod is in threaded connection with a U-shaped sliding frame, the U-shaped sliding frame is slidably connected to the interior of the rotating block, the interior of the U-shaped sliding frame is rotatably connected with a second rotating shaft, and the exterior of the second rotating shaft is fixedly connected with a second universal chuck; and the threaded rod is rotated in the rotating block. Workpieces are placed between the first universal chuck and the second universal chuck, the threaded rod is rotated so that the workpieces of different shapes and sizes can be clamped, the clamping efficiency is improved, the positioning precision is improved, and manual operation errors are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of workpiece positioning devices, and in particular to workpiece positioning devices for laser cutting machines. Background Technology

[0002] Laser cutting involves focusing a laser beam emitted from a laser source into a high-power-density beam through an optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach its melting or boiling point. As the relative position of the beam and the workpiece moves, a kerf is eventually formed in the material, thus achieving the purpose of cutting. Laser cutting machines are widely used in the processing of metal and non-metal materials. The improvement of cutting accuracy and efficiency is inseparable from high-precision workpiece positioning. However, most existing positioning devices are complex in structure or inconvenient to adjust, which affects cutting efficiency and repeatability.

[0003] In existing technologies, improving cutting accuracy and efficiency relies on high-precision workpiece positioning. However, most existing positioning devices are complex in structure or inconvenient to adjust, which affects cutting efficiency and repeatability. Therefore, it is necessary to improve the workpiece positioning device of the laser cutting machine to solve the above problems. Utility Model Content

[0004] To overcome the problem that improving cutting accuracy and efficiency requires high-precision workpiece positioning, but most existing positioning devices are complex in structure or inconvenient to adjust, which affects cutting efficiency and repeatability accuracy.

[0005] The technical solution of this utility model is as follows: a workpiece positioning device for a laser cutting machine, including a base plate, a rotating block, and an adjustment component. The adjustment component is provided on the top of the base plate, and the rotating block is provided on the top of the base plate. A first rotating shaft is rotatably connected inside the rotating block, and a first universal chuck is fixedly connected to the outside of the first rotating shaft. A threaded rod is rotatably connected inside the rotating block, and a U-shaped sliding frame is threadedly connected to the outside of the threaded rod. The U-shaped sliding frame is slidably connected inside the rotating block, and a second rotating shaft is rotatably connected inside the U-shaped sliding frame. A second universal chuck is fixedly connected to the outside of the second rotating shaft. By rotating the threaded rod inside the rotating block, it slides inside the rotating block through the second universal chuck rotating inside the U-shaped sliding frame.

[0006] Preferably, the rotating block has a groove at the corresponding position of the U-shaped sliding frame, and the U-shaped sliding frame slides in the groove.

[0007] Preferably, a U-shaped bracket is provided on the top of the base plate, a first optical axis is rotatably connected inside the U-shaped bracket, a rotating block is fixed outside the first optical axis, a dial is fixedly connected to the right end of the U-shaped bracket, a ratchet body and a pointer are fixedly connected to the outside of the first optical axis, a fixing block is fixedly connected to the right end of the U-shaped bracket, a limit shaft is fixedly connected inside the U-shaped bracket, a ratchet block is rotatably connected outside the limit shaft, a spring is fixedly connected between the ratchet block and the fixing block, a second optical axis is fixedly connected inside the U-shaped bracket, and a top block is rotatably connected to the outside of the second optical axis.

[0008] Preferably, there are two ratchet blocks, which are symmetrically distributed on the outside of the top block.

[0009] Preferably, a limiting disc is provided on the outside of the ratchet block, and the limiting discs are symmetrically distributed on the outside of the ratchet block.

[0010] Preferably, the U-shaped bracket has a groove at the corresponding position of the rotating block, and the rotating block rotates in the groove.

[0011] Preferably, the adjustment assembly includes a rotating base, which is rotatably connected to the inside of the base plate. A rotating circular frame is fixedly connected to the inside of the rotating base, which is also rotatably connected to the inside of the base plate. A worm gear is fixedly connected to the outside of the rotating circular frame, and a worm is meshed with the outside of the worm gear. A semicircular block is fixedly connected to the top of the base plate, and the worm rotates inside the semicircular block. A square bracket is fixedly connected to the top of the worm gear, and a U-shaped bracket is fixedly connected to the top of the square bracket.

[0012] The beneficial effects of this utility model are as follows: Compared with existing positioning devices, most of which have complex structures or are inconvenient to adjust, by placing the workpiece between the first universal chuck and the second universal chuck, and rotating the threaded rod, it can clamp workpieces of different shapes and sizes, thereby improving clamping efficiency, improving positioning accuracy, reducing human operation errors, and avoiding the problems of existing positioning devices having complex structures or being inconvenient to adjust, which affect cutting efficiency and repeatability positioning accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the workpiece positioning device for the laser cutting machine of this utility model;

[0014] Figure 2 This is a schematic diagram of the U-shaped bracket structure of the workpiece positioning device for the laser cutting machine of this utility model;

[0015] Figure 3 This is a schematic diagram of the ratchet body structure of the workpiece positioning device of the laser cutting machine of this utility model;

[0016] Figure 4 This is a schematic diagram of the first universal chuck structure of the workpiece positioning device for the laser cutting machine of this utility model;

[0017] Figure 5 This is a schematic diagram of the adjustment component of the workpiece positioning device of the laser cutting machine of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Base plate; 21. U-shaped bracket; 22. First optical axis; 23. Rotating block; 24. First rotating shaft; 25. First universal chuck; 26. U-shaped sliding frame; 27. Second rotating shaft; 28. Second universal chuck; 29. ​​Threaded rod; 210. Pointer; 211. Engraving disc; 212. Fixing block; 213. Limiting shaft; 214. Ratchet block; 215. Spring; 216. Second optical axis; 217. Top block; 218. Ratchet body; 31. Rotating base; 32. Rotating circular frame; 33. Worm gear; 34. Square bracket; 35. Semicircular block; 36. Worm. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5This utility model provides an embodiment of a workpiece positioning device for a laser cutting machine, including a base plate 1, a rotating block 23, and an adjustment assembly. The adjustment assembly is located on the top of the base plate 1, and the rotating block 23 is also located on the top of the base plate 1. A first rotating shaft 24 is rotatably connected inside the rotating block 23, and a first universal chuck 25 is fixedly connected to the outside of the first rotating shaft 24. A threaded rod 29 is rotatably connected inside the rotating block 23, and a U-shaped sliding frame 26 is threadedly connected to the outside of the threaded rod 29. The U-shaped sliding frame 26 is slidably connected inside the rotating block 23. A second rotating shaft 27 is rotatably connected inside the U-shaped sliding frame 26. A second universal chuck 28 is fixedly connected to the outside of the second rotating shaft 27. By rotating the threaded rod 29 inside the rotating block 23, it slides through the second universal chuck 28 inside the rotating block 23. By placing the workpiece between the first universal chuck 25 and the second universal chuck 28, and rotating the threaded rod 29 inside the rotating block 23, the workpiece slides through the threaded connection of the U-shaped sliding frame 26 to the outside of the threaded rod 29. The U-shaped sliding frame 26 slides inside the rotating block 23, causing the second universal chuck 28 to slide towards the first universal chuck 25. The first universal chuck 25 rotates inside the rotating block 23 via the first rotating shaft 24, and the second universal chuck 28 rotates inside the U-shaped sliding frame 26 via the second rotating shaft 27, allowing it to adapt to workpieces of different shapes and sizes for clamping and adjusting components. The worm gear 36 rotates inside the semi-circular block 35, causing it to interact with the worm. The wheel 33 engages, causing the rotating frame 32 to rotate inside the base plate 1. The rotating base 31 prevents the frame from disengaging from the base plate 1 during rotation. The square bracket 34 drives the U-shaped bracket 21 to rotate, achieving the effect of vertical axial rotation of the workpiece. The rotating block 23 has a groove at the corresponding position of the U-shaped sliding frame 26. The U-shaped sliding frame 26 slides in the groove, which limits the movement of the U-shaped sliding frame 26 and improves its stability during sliding, thus improving the stability of clamping workpieces of different shapes and sizes.

[0021] Please see Figure 2 - Figure 4In this embodiment, a U-shaped bracket 21 is provided on the top of the base plate 1. A first optical axis 22 is rotatably connected inside the U-shaped bracket 21. A rotating block 23 is fixed outside the first optical axis 22. A dial 211 is fixedly connected to the right end of the U-shaped bracket 21. A ratchet body 218 and a pointer 210 are fixedly connected to the outside of the first optical axis 22. A fixing block 212 is fixedly connected to the right end of the U-shaped bracket 21. A limit shaft 213 is fixedly connected inside the U-shaped bracket 21. A ratchet block 214 is rotatably connected to the outside of the limit shaft 213. A spring 215 is fixedly connected between the ratchet block 214 and the fixing block 212. A second optical axis 216 is fixedly connected inside the U-shaped bracket 21. A top block 217 is rotatably connected to the outside of the second optical axis 216. By rotating the rotating block 23, the angle of the clamping fixture can be adjusted, thereby improving the convenience and accuracy of adjustment. To enhance the practicality of the device, two ratchet blocks 214 are symmetrically distributed on the outer side of the top block 217. These two ratchet blocks 214 limit the ratchet body 218, fixing the two rotation directions of the first optical axis 22, thus improving stability and ease of adjustment. A limiting shaft 213 is provided with limiting discs on the outer side of the ratchet blocks 214, symmetrically distributed on the outer side of the ratchet blocks 214. These two limiting discs limit the ratchet blocks 214, preventing them from sliding outside the limiting shaft 213, thus improving device stability. A U-shaped bracket 21 has a groove at the corresponding position of the rotating block 23. The rotating block 23 rotates within the groove, ensuring that its rotation is unaffected by the U-shaped bracket 21, improving the ease of workpiece angle adjustment and enhancing the device's practicality.

[0022] Please see Figure 5 In this embodiment, the adjustment assembly includes a rotating base 31, which is rotatably connected to the inside of the base plate 1. A rotating circular frame 32 is fixedly connected inside the rotating base 31, and the rotating circular frame 32 is rotatably connected to the inside of the base plate 1. A worm gear 33 is fixedly connected to the outside of the rotating circular frame 32, and a worm 36 meshes with the outside of the worm gear 33. A semi-circular block 35 is fixedly connected to the top of the base plate 1, and the worm 36 rotates inside the semi-circular block 35. A square bracket 34 is fixedly connected to the top of the worm gear 33, and a U-shaped bracket 21 is fixedly connected to the top of the square bracket 34, so that the workpiece can be rotated vertically along the axis, which facilitates the adjustment of the workpiece angle and improves the practicality of the device.

[0023] During operation, the workpiece is placed between the first universal chuck 25 and the second universal chuck 28. The threaded rod 29 is rotated to make it rotate inside the rotating block 23. The U-shaped sliding frame 26 is threadedly connected to the outside of the threaded rod 29, causing it to slide inside the rotating block 23. This causes the second universal chuck 28 to slide towards the first universal chuck 25. The first universal chuck 25 rotates inside the rotating block 23 via the first rotating shaft 24, and the second universal chuck 28 rotates on the U-shaped sliding frame via the second rotating shaft 27. The interior of 26 allows it to adapt to workpieces of different shapes and sizes, enabling it to clamp workpieces of various shapes and sizes. The ratchet blocks 214 on both sides contact the exterior of the ratchet body 218, fixing the ratchet body 218 in the left-right direction and preventing the first optical axis 22 from driving the rotating block 23 to rotate. When the angle of the rotating block 23 needs to be adjusted, the top block 217 is rotated, causing it to contact the ratchet block 214 on the side requiring rotation. This causes the ratchet block 214 to swing through the limiting shaft 213. The spring 215 is compressed, limiting the top block 217 and disengaging it from the ratchet body 218. This causes the first optical axis 22 to rotate towards the disengaged ratchet block 214. The dial 211 is fixed to the right end of the U-shaped bracket 21, allowing precise rotation via a pointer 210 externally connected to the first optical axis 22. This achieves rapid workpiece fixation and precise positioning. After adjusting the angle of the rotating block 23, the top block 217 is manually pushed downwards to reset it, thus resetting the ratchet block. 214 uses the elasticity of spring 215 to reset the ratchet block 214, making it contact the ratchet body 218 and lock the angle of the first optical axis 22. By rotating the worm gear 36, it rotates inside the semi-circular block 35, and the worm gear 36 meshes with the worm wheel 33, causing the rotating circular frame 32 to rotate inside the base plate 1. The rotating base 31 prevents it from disengaging from the base plate 1 during rotation, and the square bracket 34 drives the U-shaped bracket 21 to rotate, achieving the effect of rotating the workpiece vertically.

[0024] By taking the above steps, the workpiece is placed between the first universal chuck 25 and the second universal chuck 28, and the threaded rod 29 is rotated to clamp workpieces of different shapes and sizes, thus solving the problem that most existing positioning devices are complex in structure or inconvenient to adjust, which affects cutting efficiency and repeatability accuracy.

Claims

1. A workpiece positioning device for a laser cutting machine, comprising a base plate (1), characterized in that: It also includes a rotating block (23) and an adjustment assembly. The adjustment assembly is provided on the top of the base plate (1). The rotating block (23) is provided on the top of the base plate (1). The rotating block (23) is rotatably connected to the inside of the rotating block (23). The first rotating shaft (24) is fixedly connected to the outside of the first rotating shaft (24). The rotating block (23) is rotatably connected to the inside of the rotating block (23). The threaded rod (29) is threadedly connected to the outside of the threaded rod (29). The U-shaped sliding frame (26) is slidably connected inside the rotating block (23). The second rotating shaft (27) is rotatably connected inside the U-shaped sliding frame (26). The second rotating shaft (27) is fixedly connected to the outside of the second rotating shaft (27). By rotating the threaded rod (29) inside the rotating block (23), it slides inside the rotating block (23) through the second universal chuck (28) rotating inside the U-shaped sliding frame (26).

2. The workpiece positioning device for a laser cutting machine according to claim 1, characterized in that: The rotating block (23) has a groove at the corresponding position of the U-shaped sliding frame (26), and the U-shaped sliding frame (26) slides in the groove.

3. The workpiece positioning device for a laser cutting machine according to claim 1, characterized in that: A U-shaped bracket (21) is provided on the top of the base plate (1). The first optical axis (22) is rotatably connected inside the U-shaped bracket (21). The rotating block (23) is fixed outside the first optical axis (22). The right end of the U-shaped bracket (21) is fixedly connected to the engraving disc (211). The ratchet body (218) and the pointer (210) are fixedly connected outside the first optical axis (22). The right end of the U-shaped bracket (21) is fixedly connected to the fixing block (212). The inside of the U-shaped bracket (21) is fixedly connected to the limiting shaft (213). The outside of the limiting shaft (213) is rotatably connected to the ratchet block (214). A spring (215) is fixedly connected between the ratchet block (214) and the fixing block (212). The inside of the U-shaped bracket (21) is fixedly connected to the second optical axis (216). The outside of the second optical axis (216) is rotatably connected to the top block (217).

4. The workpiece positioning device for a laser cutting machine according to claim 3, characterized in that: There are two ratchet blocks (214), which are symmetrically distributed on the outside of the top block (217).

5. The workpiece positioning device for a laser cutting machine according to claim 3, characterized in that: The limiting shaft (213) is provided with a limiting disk on the outside of the ratchet block (214), and the limiting disks are symmetrically distributed on the outside of the ratchet block (214).

6. The workpiece positioning device for a laser cutting machine according to claim 3, characterized in that: The U-shaped bracket (21) has a groove at the corresponding position of the rotating block (23), and the rotating block (23) rotates in the groove.

7. The workpiece positioning device for a laser cutting machine according to claim 1, characterized in that: The adjustment assembly includes a rotating base (31), which is rotatably connected to the inside of the base plate (1). A rotating circular frame (32) is fixedly connected inside the rotating base (31), which is rotatably connected to the inside of the base plate (1). A worm gear (33) is fixedly connected to the outside of the rotating circular frame (32), and a worm (36) meshes with the outside of the worm gear (33). A semicircular block (35) is fixedly connected to the top of the base plate (1), and the worm (36) rotates inside the semicircular block (35). A square bracket (34) is fixedly connected to the top of the worm gear (33), and a U-shaped bracket (21) is fixedly connected to the top of the square bracket (34).

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