A laser engraving machine bed adjusting mechanism

Abstract

This utility model relates to the field of laser engraving machine mold adjustment technology, and discloses a laser engraving machine mold adjustment mechanism, including a support frame. A support plate a is fixedly connected inside the support frame. A cylinder is fixedly connected to the top of the support plate a. A push rod is fixedly connected to the driving end of the cylinder. A clamping base a is fixedly connected to the right side of the push rod. A limit post a is fixedly connected to the top of the clamping base a. A transmission rod a is rotatably connected to the outside of the limit post a. In this utility model, the cylinder drives the push rod to move the clamping base a. The transmission rod a drives the transmission rod b to rotate, which in turn drives the transmission rod c to rotate. The transmission rod c pulls the clamping base b, causing the clamping base a and clamping base b to move synchronously in opposite directions. The clamping base a and clamping base b drive the clamping plate b and clamping plate a to move, achieving a clamping operation. This ensures precise clamping of the workpiece by the clamping plates, preventing clamping deviation and ensuring stable workpiece position during processing.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving machine mold adjustment technology, and in particular to a laser engraving machine mold adjustment mechanism. Background Technology

[0002] The laser engraving machine mold adjustment mechanism is a mechanical structure in the laser engraving machine used to fix, position, and adjust the position of the processed product.

[0003] In the existing technology, the laser engraving machine's mold adjustment mechanism fixes the product through replaceable carrier parts, and the flipping parts drive the product to rotate to achieve multi-face positioning. The rotating parts drive the clamping mechanism to switch between laser engraving and material changing positions. All components work together to complete automated positioning and efficient material changing, improving processing accuracy and efficiency.

[0004] However, in the existing technology, the clamping force of the mold adjustment mechanism of some laser engraving machines is uneven, which can easily lead to workpiece displacement and affect the engraving quality. Therefore, a new mold adjustment mechanism for laser engraving machines is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a laser engraving machine mold adjustment mechanism, which aims to improve the problem of uneven clamping force in some existing laser engraving machine mold adjustment mechanisms, which easily leads to workpiece displacement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a laser engraving machine mold adjustment mechanism, comprising a support frame, a support plate a fixedly connected inside the support frame, a cylinder fixedly connected to the top of the support plate a, a push rod fixedly connected to the drive end of the cylinder, a clamping base a fixedly connected to the right side of the push rod, a limiting post a fixedly connected to the top of the clamping base a, a transmission rod a rotatably connected to the outside of the limiting post a, a limiting post b rotatably connected to the left side of the transmission rod a, a transmission rod b fixedly connected to the bottom of the limiting post b, a limiting post c rotatably connected to the inside of the transmission rod b, and a support rod a fixedly connected to the bottom of the limiting post c;

[0007] As a further description of the above technical solution: the top of the support rod a is fixedly connected to a limiting post d, the outside of the limiting post d is rotatably connected to a transmission rod c, the left side of the transmission rod c is rotatably connected to a limiting post e, and the bottom of the limiting post e is fixedly connected to a clamping plate base b.

[0008] As a further description of the above technical solution: two support plates b are fixedly connected inside the support frame, and the two support plates b are fixedly connected inside the support rod a. Two sliding U-shaped blocks b are fixedly connected to the bottom of the clamping base a, and two sliding U-shaped blocks a are fixedly connected to the bottom of the clamping base b. The sliding U-shaped blocks b are slidably connected inside the support plate b, and the sliding U-shaped blocks a are slidably connected inside the support plate b.

[0009] As a further description of the above technical solution: the top of the clamping base a is fixedly connected to two transmission columns a, and the outside of the two transmission columns a is fixedly connected to a clamping plate b; the top of the clamping base b is fixedly connected to two transmission columns b, and the outside of the two transmission columns b is fixedly connected to a clamping plate a.

[0010] As a further description of the above technical solution: an operating table is fixedly connected to the top of the support frame, a slide rail is fixedly connected to the top of the operating table, a sliding support box is slidably connected to the outside of the slide rail, and a storage slot is provided inside the sliding support box;

[0011] As a further description of the above technical solution: an L-shaped support rod is fixedly connected to the top of the operating table, and a laser is fixedly connected to the bottom of the L-shaped support rod;

[0012] As a further description of the above technical solution: the inside of the operating table is provided with a plurality of grooves a, the outside of the transmission column a is slidably connected to the inside of the groove a, and the transmission column b is slidably connected to the inside of the groove a;

[0013] As a further description of the above technical solution: both ends of the bottom of the sliding bearing box are fixedly connected to sleeves, and two telescopic columns are slidably connected to the inner ends of the sliding bearing box. Multiple holes are opened inside the telescopic columns, and the outside of the telescopic columns is slidably connected to the inside of the sleeves. Holes are opened inside the sleeves.

[0014] As a further description of the above technical solution: a square groove is provided inside the sleeve, a spring is provided on the rear side of the square groove, a pressing plate is fixedly connected to the rear side of the spring, a locking pin is fixedly connected to the front side of the pressing plate, the locking pin is slidably connected to the outside of the hole in the sleeve, the locking pin is slidably connected to the outside of the hole in the telescopic pin, a limit ring is fixedly connected to the rear side of the sleeve, and the inside of the limit ring is slidably connected to the outside of the locking pin;

[0015] As a further description of the above technical solution: a U-shaped plate is fixedly connected to the rear side of the sleeve, a limiting post f is fixedly connected inside the U-shaped plate, a limiting plate is rotatably connected to the outside of the limiting post f, the rear side of the limiting plate is fixedly connected to the front side of the pressing plate, two limiting holes are opened inside the operating table, and the outside of the telescopic post is slidably connected to the inside of the limiting holes.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, the cylinder drives the push rod to move the clamping base a, the transmission rod a drives the transmission rod b to rotate, and then drives the transmission rod c to rotate around the limiting post d. The transmission rod c then pulls the clamping base b through the limiting post e, so that the clamping base a and the clamping base b move in opposite directions synchronously. The clamping base a and the clamping base b drive the clamping plate b and the clamping plate a to move through the transmission post a and the transmission post b respectively to achieve the clamping operation, thereby achieving precise clamping of the workpiece by the clamping plate, avoiding clamping deviation, and ensuring the stability of the workpiece position during processing.

[0018] 2. In this utility model, the sliding carrier box slides along the slide rail of the operating table, which can adjust the position of the workpiece in the horizontal direction. The telescopic column at the bottom of the sliding carrier box slides in the sleeve. By pressing the pressing plate to compress the spring, the locking column is disengaged from the hole of the telescopic column, which can adjust the extension length of the telescopic column. After releasing the pressing plate, the spring pushes the locking column to re-insert into the hole of the telescopic column to complete the locking. The telescopic column is inserted into the limiting hole of the operating table to fix the carrier box, thereby aligning the workpiece with the top laser in the horizontal direction and avoiding deviations caused by repeated calibration. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a laser engraving machine mold adjustment mechanism proposed in this utility model;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the support plate a of the laser engraving machine mold adjustment mechanism proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the slide rail structure of a laser engraving machine mold adjustment mechanism proposed in this utility model;

[0023] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0024] Legend:

[0025] 1. Support frame; 2. Support plate a; 3. Cylinder; 4. Push rod; 5. Clamping plate base a; 6. Limiting post a; 7. Transmission rod a; 8. Limiting post b; 9. Transmission rod b; 10. Limiting post c; 11. Support rod a; 12. Limiting post d; 13. Transmission rod c; 14. Limiting post e; 15. Clamping plate base b; 16. Sliding U-block a; 17. Sliding U-block b; 18. Support plate b; 19. Transmission post a; 20. 21. Transmission column b; 22. Clamping plate a; 23. Clamping plate b; 24. Operating table; 25. Slide rail; 26. Sliding bearing box; 27. Storage slot; 28. L-shaped support rod; 29. ​​Laser; 30. Groove a; 31. Telescopic column; 32. Sleeve; 33. Limiting ring; 34. Square groove; 35. Spring; 36. Pressing plate; 37. U-shaped plate; 38. Limiting column f; 39. Limiting plate; 40. Locking column; 51. Limiting hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4This utility model provides an embodiment of a laser engraving machine mold adjustment mechanism, including a support frame 1. The support frame 1 serves as the mounting base for the entire mechanism, supporting and fixing various components to ensure the overall stability of the mechanism. A support plate a2 is fixedly connected inside the support frame 1, providing a stable mounting platform for the cylinder 3 and preventing it from shaking during operation. The top of the support plate a2 is fixedly connected to the cylinder 3, which acts as a power source, outputting linear driving force to drive subsequent components. A push rod 4 is fixedly connected to the drive end of the cylinder 3, transmitting the driving force of the cylinder 3 to the clamping base a5, thus realizing the force... For effective transmission, a clamping base a5 is fixedly connected to the right side of push rod 4. The clamping base a5 serves as the basic component supporting clamping plate b22 and simultaneously drives the transmission components on it. A limit post a6 is fixedly connected to the top of clamping base a5, providing a fulcrum for the transmission rod a7, allowing it to rotate flexibly. The transmission rod a7 is rotatably connected to the outside of the limit post a6, transmitting the motion of clamping base a5 to transmission rod b9. A limit post b8 is rotatably connected to the left side of the inside of transmission rod a7, connecting transmission rod a7 and transmission rod b9 to achieve movement between them. The transmission mechanism involves a transmission rod b9 fixedly connected to the bottom of the limiting post b8. The transmission rod b9 further transmits power to the support rod a11, while simultaneously changing the direction of force transmission. A limiting post c10 is rotatably connected inside the transmission rod b9, providing a fulcrum for rotation and allowing the transmission rod b9 to rotate around the support rod a11. The support rod a11 is fixedly connected to the bottom of the limiting post c10, serving as an intermediate transmission component, transmitting the movement of the transmission rod b9 to the transmission rod c13, and simultaneously supporting the entire transmission rod assembly. A limiting post d12 is fixedly connected to the top of the support rod a11, serving as a transmission... Rod C13 provides a pivot point to ensure stable rotation of the transmission rod C13. The external rotatable connection of the transmission rod C13 is a limit post D12. The transmission rod C13 transmits the movement of the support rod A11 to the clamping base B15, realizing the linkage between the clamping base A5 and the clamping base B15. The left internal rotatable connection of the transmission rod C13 is a limit post E14. The limit post E14 connects the transmission rod C13 and the clamping base B15, enabling flexible transmission of movement between the two. The bottom of the limit post E14 is fixedly connected to the clamping base B15. The clamping base B15 is used to install the clamping plate A21, which cooperates with the clamping base A5 to realize the clamping action of the workpiece.

[0028] The support frame 1 has two fixedly connected support plates b18 inside. These two support plates b18 provide sliding tracks for the sliding U-shaped blocks a16 and b17, ensuring smooth sliding. The two support plates b18 are internally fixedly connected to the outside of the support rod a11, further enhancing the installation stability of the support rod a11 and preventing it from shifting during transmission. The bottom of the clamping base a5 has two fixedly connected sliding U-shaped blocks b17, which can slide along the support plates b18, restricting the movement direction of the clamping base a5. The bottom of the clamping base b15 also has two fixedly connected sliding U-shaped blocks a16, which slide along the support plates b18, ensuring the clamping base b15 moves along a predetermined trajectory. The internal sliding U-shaped blocks b17 are slidably connected to the outside of the support plates b18, allowing them to slide along the tracks. The sliding U-shaped block a16 is internally slidably connected to the outside of the support plate b18, which also serves as a guide and limiter. Two transmission columns a19 are fixedly connected to the top of the clamping base a5. The transmission columns a19 transmit the movement of the clamping base a5 to the clamping plate b22, causing the clamping plate b22 to move synchronously. The clamping plate b22 is fixedly connected to the outside of the two transmission columns a19. The clamping plate b22 directly contacts the workpiece and is used to clamp one side of the workpiece. Two transmission columns b20 are fixedly connected to the top of the clamping base b15. The transmission columns b20 transmit the movement of the clamping base b15 to the clamping plate a21, causing the clamping plate a21 to move together. The clamping plate a21 is fixedly connected to the outside of the two transmission columns b20. The clamping plate a21 cooperates with the clamping plate b22 to clamp the workpiece from both sides, ensuring that the workpiece does not shift during processing.

[0029] An operating table 23 is fixedly connected to the top of the support frame 1. The operating table 23 provides an operating platform for workpiece processing and the installation of various components. A slide rail 24 is fixedly connected to the top of the operating table 23. The slide rail 24 provides a sliding track for the sliding carrier box 25, allowing the sliding carrier box 25 to move flexibly. The sliding carrier box 25 is slidably connected to the outside of the slide rail 24. The sliding carrier box 25 is used to place the workpiece to be processed and can move the workpiece to adjust its position. A storage slot 26 is opened inside the sliding carrier box 25. The storage slot 26 is used to position the workpiece to be processed and prevent the workpiece from falling or shifting during the movement of the sliding carrier box 25. An L-shaped support rod 27 is fixedly connected to the top of the operating table 23. The L-shaped support rod 27 provides mounting support for the laser 28, allowing the laser 28 to be in a suitable position. With a suitable processing height and position, a laser 28 is fixedly connected to the bottom of the L-shaped support rod 27. The laser 28 is used to emit a laser beam to perform laser engraving on the workpiece. The operating table 23 has multiple grooves a29 inside. The grooves a29 provide movement space for the transmission column a19 and the transmission column b20, while restricting their movement direction. The external of the transmission column a19 is slidably connected to the inside of the groove a29. When the transmission column a19 slides in the groove a29, it further ensures the accuracy of the movement trajectory of the clamping plate b22. The transmission column b20 is slidably connected to the inside of the groove a29 to ensure that the clamping plate a21 moves according to the predetermined trajectory. Through the above structural cooperation, the clamping plate can accurately clamp the workpiece, avoid clamping deviation, and ensure the stability of the workpiece position during processing.

[0030] Reference Figure 2 , Figure 4 , Figure 5Both ends of the bottom of the sliding support box 25 are fixedly connected to sleeves 31. The sleeves 31 provide telescopic guides for the telescopic columns 30 and restrict the movement direction of the telescopic columns 30. Two telescopic columns 30 are slidably connected to the two ends inside the sliding support box 25. The telescopic columns 30 can extend and retract within the sleeves 31 for positioning the sliding support box 25. Multiple holes are opened inside the telescopic columns 30, which cooperate with the locking columns 39 to fix the telescopic columns 30 at different telescopic lengths. The telescopic columns 30 are slidably connected to the inside of the sleeves 31. The sleeves 31 have holes inside, which correspond to the holes on the telescopic columns 30, providing an insertion channel for the locking columns 39. A square groove 33 is opened inside the sleeves 31, which provides installation space for the spring 34, the pressing plate 35, and the locking columns 39. A spring 34 is provided on the rear side of the square groove 33. The spring 34 has an elastic return function and can push the locking columns 39. While in the locked state, a pressing plate 35 is fixedly connected to the rear side of the spring 34. The pressing plate 35 allows the operator to apply external force to compress the spring 34 to release the lock. A locking pin 39 is fixedly connected to the front side of the pressing plate 35. The locking pin 39 can be inserted into the holes of the sleeve 31 and the telescopic pin 30 to achieve relative fixation between the telescopic pin 30 and the sleeve 31. The outer side of the locking pin 39 is slidably connected to the inside of the hole of the sleeve 31 to ensure that the locking pin 39 can smoothly enter and exit the hole. The outer side of the locking pin 39 is slidably connected to the inside of the hole of the telescopic pin 30. Through the cooperation between the locking pin 39 and the hole of the telescopic pin 30, the telescopic length of the telescopic pin 30 is fixed. A limit ring 32 is fixedly connected to the rear side of the sleeve 31. The limit ring 32 limits the movement of the locking pin 39 to prevent the locking pin 39 from deviating during the movement. The inner side of the limit ring 32 is slidably connected to the outer side of the locking pin 39 to ensure that the locking pin 39 moves in a straight line.

[0031] A U-shaped plate 36 is fixedly connected to the rear side of the sleeve 31. The U-shaped plate 36 provides an installation position for the limiting post f37. The limiting post f37 is fixedly connected inside the U-shaped plate 36, and the limiting post f37 provides a rotation fulcrum for the limiting plate 38, allowing the limiting plate 38 to rotate around it. The limiting plate 38 is rotatably connected to the outside of the limiting post f37. The limiting plate 38 limits the movement of the pressing plate 35, preventing the pressing plate 35 from being over-pressed and causing damage to the spring 34. The rear side of the limiting plate 38 is fixedly connected to the pressing plate 35. On the front side, the movement of the pressing plate 35 can drive the limiting plate 38 to rotate synchronously. The inside of the operating table 23 has two limiting holes 40. The limiting holes 40 cooperate with the telescopic column 30 to fix the position of the sliding carrier box 25 and directly align it with the laser 28 emission position in the horizontal direction. The telescopic column 30 is externally slidably connected to the inside of the limiting hole 40. By inserting the telescopic column 30 into the limiting hole 40, the workpiece is aligned with the top laser 28 in the horizontal direction, avoiding repeated calibration and position deviation.

[0032] Working principle: The operator places the workpiece to be laser-engraved into the placement slot 26 inside the sliding support box 25. The placement slot 26 provides initial positioning for the workpiece. The cylinder 3 is activated, and the drive end of the cylinder 3 drives the push rod 4 to move to the right. The push rod 4 pushes the clamping base a5 to move to the right. The sliding U-shaped block b17 at the bottom of the clamping base a5 slides on the support plate b18. As the clamping base a5 moves, it drives the limiting post a6 to move, causing the transmission rod a7 to rotate around the limiting post a6. The rotation of the transmission rod a7 drives the limiting post b8 to move, which in turn causes the transmission rod b9 to rotate around the limiting post c10. Since the support rod a11 is fixed to the support frame 1 through the support plate b18, the limiting post a10 is fixed to the support frame 1. With column d12 fixed in position, transmission rod c13 rotates under the action of limit column d12. The rotation of transmission rod c13 drives limit column e14 to move, causing clamp base b15 to move to the left. The sliding U-shaped block a16 at the bottom of clamp base b15 slides on support plate b18. Clamp base a5 drives transmission column a19 to slide in groove a29 of operating table 23. Clamp base b15 drives transmission column b20 to slide in groove a29, thereby causing clamp b22 and clamp a21 to move closer to each other and clamp the workpiece in storage slot 26. After that, laser 28 on L-shaped support rod 27 is activated to perform laser engraving on the fixed workpiece.

[0033] The operator presses the pressing plate 35, which compresses the spring 34, causing the locking pin 39 to slide within the limiting ring 32. This allows the locking pin 39 to exit from the holes in the telescopic pin 30 and the sleeve 31, releasing the lock on the telescopic pin 30. Then, the telescopic pin 30 is pulled, allowing it to slide within the sleeve 31, adjusting the position of the sliding support box 25 on the slide rail 24. Once the sliding support box 25 reaches the appropriate position, the pressing plate 35 is released, the spring 34 returns to its original position, and the locking pin 39 is pushed through the sleeve 31. The hole of 1 is inserted into the hole of the telescopic column 30, and at the same time the telescopic column 30 is inserted into the limiting hole 40 of the operating table 23 to fix the sliding carrier box 25. At this time, the workpiece to be processed is placed into the storage slot 26 of the sliding carrier box 25. During the adjustment of the sliding carrier box 25, the limiting column f37 in the U-shaped plate 36 plays a limiting role on the limiting plate 38, ensuring the stable movement of the pressing plate 35, so that the workpiece is aligned with the top laser 28 in the horizontal direction, avoiding repeated calibration and position deviation.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser engraving machine mold adjustment mechanism, comprising a support frame (1), characterized in that: The support frame (1) is fixedly connected to a support plate a (2). A cylinder (3) is fixedly connected to the top of the support plate a (2). A push rod (4) is fixedly connected to the drive end of the cylinder (3). A clamping base a (5) is fixedly connected to the right side of the push rod (4). A limiting post a (6) is fixedly connected to the top of the clamping base a (5). A transmission rod a (7) is rotatably connected to the outside of the limiting post a (6). A limiting post b (8) is rotatably connected to the left side of the transmission rod a (7). A transmission rod b (9) is fixedly connected to the bottom of the limiting post b (8). A limiting post c (10) is rotatably connected to the inside of the transmission rod b (9). A support rod a (11) is fixedly connected to the bottom of the limiting post c (10).

2. The laser engraving machine mold adjustment mechanism according to claim 1, characterized in that: The top of the support rod a (11) is fixedly connected to the limiting post d (12), the outside of the limiting post d (12) is rotatably connected to the transmission rod c (13), the left side of the transmission rod c (13) is rotatably connected to the limiting post e (14), and the bottom of the limiting post e (14) is fixedly connected to the clamp base b (15).

3. The laser engraving machine mold adjustment mechanism according to claim 2, characterized in that: The support frame (1) has two support plates b (18) fixedly connected inside. The two support plates b (18) are fixedly connected inside to the outside of the support rod a (11). The bottom of the clamp base a (5) has two sliding U-shaped blocks b (17) fixedly connected. The bottom of the clamp base b (15) has two sliding U-shaped blocks a (16) fixedly connected. The inside of the sliding U-shaped blocks b (17) is slidably connected to the outside of the support plate b (18). The inside of the sliding U-shaped blocks a (16) is slidably connected to the outside of the support plate b (18).

4. The laser engraving machine mold adjustment mechanism according to claim 2, characterized in that: The top of the clamp base a (5) is fixedly connected to two transmission columns a (19), and the outside of the two transmission columns a (19) is fixedly connected to a clamp b (22). The top of the clamp base b (15) is fixedly connected to two transmission columns b (20), and the outside of the two transmission columns b (20) is fixedly connected to a clamp a (21).

5. The laser engraving machine mold adjustment mechanism according to claim 4, characterized in that: The top of the support frame (1) is fixedly connected to an operating table (23), the top of the operating table (23) is fixedly connected to a slide rail (24), the outside of the slide rail (24) is slidably connected to a sliding support box (25), and the inside of the sliding support box (25) is provided with a storage slot (26).

6. The laser engraving machine mold adjustment mechanism according to claim 5, characterized in that: The top of the operating table (23) is fixedly connected to an L-shaped support rod (27), and the bottom of the L-shaped support rod (27) is fixedly connected to a laser (28).

7. The laser engraving machine mold adjustment mechanism according to claim 5, characterized in that: The operating table (23) has multiple grooves a (29) inside. The transmission column a (19) is slidably connected to the inside of the groove a (29) on the outside, and the transmission column b (20) is slidably connected to the inside of the groove a (29).

8. The laser engraving machine mold adjustment mechanism according to claim 5, characterized in that: Both ends of the bottom of the sliding support box (25) are fixedly connected to sleeves (31). Two telescopic columns (30) are slidably connected to the inner ends of the sliding support box (25). Multiple holes are opened inside the telescopic columns (30). The outside of the telescopic columns (30) is slidably connected to the inside of the sleeves (31). Holes are opened inside the sleeves (31).

9. The laser engraving machine mold adjustment mechanism according to claim 8, characterized in that: The sleeve (31) has a square groove (33) inside. A spring (34) is provided on the rear side of the square groove (33). A pressing plate (35) is fixedly connected to the rear side of the spring (34). A locking pin (39) is fixedly connected to the front side of the pressing plate (35). The locking pin (39) is slidably connected to the outside of the hole in the sleeve (31). The locking pin (39) is slidably connected to the outside of the hole in the telescopic pin (30). A limit ring (32) is fixedly connected to the rear side of the sleeve (31). The inside of the limit ring (32) is slidably connected to the outside of the locking pin (39).

10. The laser engraving machine mold adjustment mechanism according to claim 9, characterized in that: A U-shaped plate (36) is fixedly connected to the rear side of the sleeve (31). A limiting post f (37) is fixedly connected inside the U-shaped plate (36). A limiting plate (38) is rotatably connected to the outside of the limiting post f (37). The rear side of the limiting plate (38) is fixedly connected to the front side of the pressing plate (35). Two limiting holes (40) are opened inside the operating table (23). The outside of the telescopic post (30) is slidably connected to the inside of the limiting holes (40).

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