A laser processing machine

Abstract

This invention relates to a laser processing machine. It includes: a worktable with a laser tube replacement seat fixed thereon, the laser tube replacement seat having a laser tube insertion hole; a laser processing head connected to a laser tube assembly; the laser tube assembly includes: a laser tube, an upper outer tube with an inner convex ring at the lower end of its inner side, an upper annular groove with an elastic body formed at the upper end of the inner side of the upper outer tube, and an upper ring at the upper end of the upper outer tube; a middle ring, disposed between the outer tube and the laser tube, having several through holes, each containing a movable bead and a limiting part, and a slot on the upper outer side of the laser tube; the elastic body includes an inner elastic ring, a middle elastic ring, and an outer elastic ring, the middle elastic ring being a delayed-reset elastic element, the lower end of the inner elastic ring abutting against the laser tube, and the lower end of the middle elastic ring abutting against the middle ring; initially, the middle ring is located below the outer elastic ring. This invention, by setting the middle ring and the elastic body, allows for automatic replacement of the laser tube.

Description

Technical Field

[0001] This invention relates to the field of laser processing machine technology, and in particular to a laser processing machine capable of automatically changing the laser tube. Background Technology

[0002] Currently, small and medium-sized laser processing machines generally use a single laser source. However, a single laser source has limited applicability to certain materials because different wavelengths of laser light exhibit different performance when processing different materials. For example, shorter wavelength lasers have a higher coefficient of friction and processing efficiency when processing metal materials, while longer wavelength lasers have better penetration and cutting capabilities when processing non-metallic materials. Therefore, many small and medium-sized laser processing machines have begun to adopt dual laser sources, and the laser reflection system also uses a switching lens structure. For example, patent application number CN202510086355.5, entitled "An Invention Patent for a Dual Laser Processing Machine," allows for mirror switching during laser switching to improve laser utilization. However, the objective lens inside the laser tube cannot be changed during laser source switching, meaning that laser utilization cannot be maximized. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a laser processing machine that can automatically replace the laser tube. This laser processing machine replaces the laser tube when switching laser sources, thereby maximizing the utilization rate of the laser.

[0004] A laser processing machine, comprising:

[0005] The workbench is equipped with a laser tube replacement holder, which has multiple laser tube insertion holes.

[0006] A laser processing head, connected to a laser tube assembly;

[0007] The laser tube assembly includes:

[0008] Laser tube

[0009] The upper outer cylinder has an inner convex ring at the lower end of its inner side surface, an upper annular groove with an elastic body at the upper end of its inner side surface, and an upper ring at the upper end of its upper outer cylinder.

[0010] An intermediate ring is located between the outer cylinder and the laser cylinder. It has several through holes, and a movable bead is placed inside each through hole. A limiting part is provided on the side of the through hole near the laser cylinder to prevent the movable bead from falling off. An annular groove is provided on the upper outer side of the laser cylinder.

[0011] The lower outer cylinder is connected to the upper outer cylinder at its upper end, and a lower ring is provided at its lower end. An elastic element is provided between the lower ring and the middle ring.

[0012] The elastomer includes an inner elastic ring, a middle elastic ring, and an outer elastic ring. The middle elastic ring is a delayed-reset elastic element, such as rubber, sponge, cotton, or a delayed-reset spring, which returns to its original position slowly after compression. The lower end of the inner elastic ring abuts against the laser tube, and the lower end of the middle elastic ring abuts against the middle ring. Initially, the middle ring is located below the outer elastic ring.

[0013] Preferably, the limiting part is a limiting ring; the inner diameter of the limiting ring is slightly smaller than the diameter of the moving bead, thus restricting the moving bead from leaving the perforation.

[0014] Furthermore, the inner elastic ring, the middle elastic ring, and the outer elastic ring are formed separately.

[0015] Furthermore, the lower end of the intermediate elastic ring is lower than the inner spring ring; initially, both the intermediate elastic ring and the inner elastic ring are deformed and have elastic force.

[0016] Furthermore, the lower end of the upper outer cylinder is provided with a lower annular groove, and the upper end of the lower outer cylinder is provided with an annular connecting part that matches the lower annular groove, and the annular connecting part is connected to the lower end of the upper outer cylinder.

[0017] Furthermore, the lower end of the laser processing head is provided with a chuck, which is clamped and connected to the upper end of the outer cylinder.

[0018] Furthermore, the laser processing machine is provided with a horizontal moving mechanism for driving the laser processing head to move horizontally and a lifting mechanism for driving the worktable to rise or fall or the horizontal moving mechanism to rise or fall.

[0019] Furthermore, the elastic element is a spring, or / and the inner elastic ring is a spring.

[0020] Furthermore, the horizontal movement mechanism includes an XY movement mechanism, which can drive the laser processing head to move laterally and longitudinally.

[0021] Furthermore, the XY moving mechanism includes a transverse linear module and a longitudinal linear module. The transverse linear module is connected to the laser processing head, and the longitudinal linear modules are respectively connected to both ends of the transverse linear module. The longitudinal linear module drives the transverse linear module to move longitudinally, and the transverse linear module drives the laser processing head to move laterally. The longitudinal linear module is fixed to the frame of the laser processing machine. The lifting mechanism is a vertical linear module and is connected to the worktable to drive the worktable to move up and down.

[0022] The beneficial effects of the present invention are as follows: By setting an intermediate ring and an elastic body, the laser tube can be automatically replaced without manual intervention, making it convenient to use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the laser processing equipment in this embodiment.

[0024] Figure 2 This is a schematic diagram of a laser processing head.

[0025] Figure 3 This is a schematic diagram of a laser tube assembly.

[0026] Figure 4 for Figure 3 A schematic diagram of a partial cross-sectional structure.

[0027] Figure 5 This is a partial cross-sectional view of the structure during the first type of change when disassembling the laser tube.

[0028] Figure 6 This is a partial cross-sectional view of the structure during the second variation of the laser tube disassembly.

[0029] Figure 7 This is a partial cross-sectional view of the third variation of the laser tube during disassembly.

[0030] Figure 8 This is a partial cross-sectional view of the fourth variation of the laser tube during disassembly.

[0031] Figure 9 This is a partial cross-sectional view of the structure during the installation of the laser tube, representing the first variation.

[0032] Figure 10 This is a partial cross-sectional view of the structure for the second variation when installing the laser tube.

[0033] Figure 11 This is a partial cross-sectional view of the third variation when installing the laser tube.

[0034] Figure 12 This is a partial cross-sectional view of the fourth variation when installing the laser tube.

[0035] Figure 13 This is a partial cross-sectional view of the fifth variation of the laser tube installation.

[0036] Figure 14 This is a partial cross-sectional view of the sixth variation of the laser tube installation.

[0037] Figure 15 This is a schematic diagram showing the connection between the upper outer cylinder and the lower outer cylinder.

[0038] Figure 16 This is a schematic diagram of the intermediate ring structure.

[0039] Figure label:

[0040] 1—Worktable; 2—Laser tube assembly; 3—Laser processing head; 4—Laser tube insertion hole; 5—Laser tube replacement base;

[0041] 21—Upper outer cylinder; 22—Lower outer cylinder; 23—Laser cylinder; 24—Elastic element; 25—Intermediate ring; 26—Moving bead; 27—Intermediate elastic ring; 28—Outer elastic ring; 29—Inner elastic ring; 31—Clamp; 211—Upper ring; 212—Upper annular groove; 213—Inner convex ring; 221—Lower ring; 231—Slot; 251—Through hole; 252—Limiting ring. Detailed Implementation

[0042] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0043] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0044] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0046] The present invention will now be described in detail with reference to the accompanying drawings. Figures 1 to 3 As shown.

[0047] Example 1: See Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 15A laser processing machine includes: a worktable 1, on which a laser tube replacement seat 5 is fixed, the laser tube replacement seat 5 having multiple laser tube insertion holes 4; and a laser processing head 3 connected to a laser tube assembly 2; the laser tube assembly 2 includes: a laser tube 23, an upper outer tube 21, an intermediate ring 25, and a lower outer tube 22; the lower end of the inner side of the upper outer tube 21 has an inner convex ring 213, the upper end of the inner side of the upper outer tube 21 has an upper annular groove 212 and an elastic body, and the upper end of the upper outer tube 21 has an upper ring 211; the intermediate ring 25 is disposed between the upper outer tube 21 and the laser tube 23, and the intermediate ring 25 has multiple through holes 251, each through hole 251 containing a movable bead 26. A limiting part for preventing the movable bead 26 from dislodging is provided on the side of the laser tube 23 near the laser tube 23. The upper outer surface of the laser tube 23 is provided with an annular groove 231. The upper end of the lower outer tube 22 is connected to the upper outer tube 21, and its lower end is provided with a lower ring 221. An elastic element 24 is provided between the lower ring 221 and the middle ring 25. The elastic body includes an inner elastic ring 29, a middle elastic ring 27, and an outer elastic ring 28. The middle elastic ring 27 is a delayed-reset elastic element, such as rubber, sponge, cotton, delayed-reset spring, etc., which returns to its original position slowly after compression. The lower end of the inner elastic ring 29 abuts against the laser tube 23, and the lower end of the middle elastic ring 27 abuts against the middle ring 25. Initially, the middle ring 25 is located below the outer elastic ring 28. Preferably, there can be 2, 3, 4, 5, or 6 perforations 251. The perforations 251 are evenly distributed on the middle ring 25.

[0048] See Figure 16 The limiting part is a limiting ring 252; the inner diameter of the limiting ring 252 is slightly smaller than the diameter of the movable bead 26, preventing the movable bead 26 from disengaging from the through hole 251. In a specific implementation, a limiting ring 252 is provided at the end of the through hole 251 on the intermediate ring 25. The limiting ring 252 protrudes into the through hole 251, and its thickness can be set to be small, so as not to affect the engagement between the movable bead 26 and the slot 231. When the movable bead 26 is in contact with the side of the slot 231, the movable bead 26 abuts against or is about to abut against the limiting ring 252.

[0049] The inner elastic ring 29, the middle elastic ring 27, and the outer elastic ring 28 can be integrally formed, and when integrally formed, they are all reset elastic components; they can also be separately formed and then connected in sequence; the materials of the separately formed inner elastic ring 29, the middle elastic ring 27, and the outer elastic ring 28 can be the same or different. The inner spring and the outer spring ring can be made of non-delayed elastic materials, while elastic materials such as gas elastic components 24 and springs can be used.

[0050] The diameter of the movable bead 26 is slightly larger than the thickness of the intermediate ring 25, such as by 0.1mm-0.5mm; for initial operation, please refer to... Figure 4One side of the movable bead 26 abuts against the inner convex ring 213, and the other side of the movable bead 26 is inserted into the slot 231 of the laser tube 23. The vertical width of the slot 231 can be 1 / 10 to 1 / 5 of the diameter of the movable bead 26. The intermediate ring 25 is engaged with the laser tube 23 through the movable bead 26. The lower end of the intermediate ring 25 presses against the elastic element 24, causing the elastic element 24 to deform. At the same time, the upper end of the laser tube 23 abuts against the inner elastic ring 29, and the upper end of the intermediate ring 25 abuts against the intermediate elastic ring 27. The inner elastic ring 29 and the middle elastic ring 27 may or may not undergo elastic deformation. The elastic force formed by the deformation of the elastic element 24 is F, which is not less than the sum of the weights of the middle ring 25 and the laser tube 23. The weights of the middle ring 25 and the laser tube 23 are G1 and G2, respectively, so F ≥ G1 + G2. In this embodiment, the elastic force also includes the thrust of the middle elastic ring 27 on the middle ring 25 and the thrust of the inner elastic ring 29 on the laser tube 23.

[0051] When replacing the laser tube 23, the laser processing head 3 moves above the laser tube insertion hole 4 under the drive of the moving mechanism, and then drives the laser processing head 3 to move downward or the worktable 1 to move upward; the lower end of the laser tube 23 is inserted into the laser tube insertion hole 4 and forms an insertion connection with the laser tube replacement seat 5. To ensure that the laser tube 23 is stably inserted into the laser tube replacement seat 5, the laser tube 23 and the laser tube insertion hole 4 can generally be designed as an interference fit connection or a mating connection. Of course, other connection methods can also be used, such as an adsorption connection, by drawing the gas out of the laser tube insertion hole 4.

[0052] When the laser tube 23 is inserted into the upper end of the laser tube insertion hole 4, the laser tube 23 experiences resistance from the inner surface of the laser tube insertion hole 4. This resistance pushes the laser tube 23 upward. Due to the presence of the inner elastic ring 29, the upper end of the laser tube 23 abuts against the inner elastic ring 29, causing the inner elastic ring 29 to deform. Simultaneously, the downward movement speed of the laser tube 23 relative to the worktable 1 is less than the descent speed of the upper outer cylinder 21 and the lower outer cylinder 22. Because the intermediate ring 25 is engaged with the laser tube 23, the intermediate ring 25 and the laser tube 23 move upward together relative to the upper outer cylinder 21. At the same time, the laser tube 23 compresses the inner elastic ring 29, and the intermediate ring 25 compresses the intermediate elastic ring 27, causing the elastic element 24 to gradually return to its original position. See also Figure 5 .

[0053] See Figure 6When the moving bead 26 enters the lower adjacent position of the upper annular groove 212 and abuts against the outer elastic ring 28, the elastic element 24 still has the force to push the middle ring 25 upward; at this time, the drive to move the upper outer cylinder 21 downward or the worktable 1 upward is stopped, and the middle elastic ring 27 and the inner elastic ring 29 are deformed. Since the laser cylinder 23 is inserted into the laser cylinder insertion hole 4 during this process, the position of the laser cylinder 23 remains basically unchanged, and the laser cylinder 23 is engaged with the middle ring 25, so the position of the middle ring 25 also remains unchanged; the distance that the upper outer cylinder 21 descends can be obtained by calculation.

[0054] Next, the upper outer cylinder 21 is controlled to move upward rapidly. At this time, because the middle elastic ring 27 is a delayed reset component, the middle elastic ring 27 resets slowly, while the inner elastic ring 29 resets quickly. This process will cause the laser cylinder 23 to move downward relative to the middle ring 25. The moving bead 26 is pushed and moves within the perforation 251, leaving the laser cylinder 23 and squeezing the outer elastic ring 28. The moving bead 26 is located above the slot 231 of the laser cylinder 23. As the upper outer cylinder 21 continues to move upward, the middle ring 25 separates from the laser cylinder 23, and the laser cylinder 23 remains on the laser cylinder replacement seat 5. See [link to relevant documentation]. Figure 6 , Figure 7 , Figure 8 .

[0055] After separation, the intermediate elastic ring 27 gradually resets and drives the intermediate ring 25 to move downwards. The moving bead 26 moves and leaves the outer elastic ring 28 under the push of the outer elastic ring 28. The outer elastic ring 28 can be made of elastic cotton, elastic rubber, sponge, or other materials. The intermediate ring 25 descends under the drive of the intermediate elastic ring 27. When the intermediate elastic ring 27 resets to its maximum extent, the perforation 251 is located on one side of the middle of the inner convex ring 213. The intermediate ring 25 is still held by the intermediate elastic ring 27 and the elastic element 24. The inner elastic ring 29 also resets synchronously in the above steps.

[0056] When replacing the laser tube 23, the upper outer tube 21 is positioned above the new laser tube 23. Then, the upper outer tube 21 moves downward or the worktable 1 moves upward. At this time, the through hole 251 of the intermediate ring 25 and the moving bead 26 are located on one side of the inner convex ring 213, and the moving bead 26 is located inside the through hole 251 with one side of the moving bead 26 extending out of the through hole 251 and abutting against the limiting ring 252. When the upper outer tube 21 moves downward or the worktable 1 moves upward, until the upper end of the laser tube 23 abuts against the moving bead 26, see [reference needed]. Figure 9The upper end of the laser tube 23 engages with the movable bead 26. Since the laser tube 23 is inserted into the laser tube replacement seat 5 and cannot move downwards, it prevents the movable bead 26 and the intermediate ring 25 from moving downwards relative to each other. The upper outer tube 21 continues to move downwards relative to each other, and the intermediate ring 25 presses against and squeezes the intermediate elastic ring 27. After a period of time, the movable bead 26 is located on one side of the outer elastic ring 28. At this time, the upper end of the laser tube 23 will squeeze the movable bead 26 towards the outer elastic ring 28 and squeeze it. The intermediate ring 25 engages with the inner convex ring 213 of the upper outer tube 21 through the movable bead 26. Simultaneously, the movable bead 26 abuts against the side of the laser tube 23, and the upper end of the intermediate ring 25 abuts against the intermediate elastic ring 27. The upper outer tube 21 continues to move downwards relative to each other. At this time, the upper outer tube 21, the intermediate ring 25, and the movable bead 26 move downwards relative to the laser tube 23 together, moving a certain distance until the slot 231 of the laser tube 23 is located on one side of the through hole 251. (See...) Figure 10 Stop at this point; or continue moving a short distance until the slot 231 is above the perforation 251.

[0057] At this time, the upper outer cylinder 21 is moved upward or the worktable 1 is moved downward, and the moving speed is less than or equal to the recovery speed of the intermediate elastic ring 27, so that the intermediate elastic ring 27 always maintains a downward thrust on the intermediate ring 25.

[0058] When the slot 231 is above the hole 251, the moving bead 26 abuts against the side of the laser tube 23, and the middle ring 25 is engaged with the inner convex ring 213 of the upper outer tube 21 through the moving bead 26. The middle ring 25 and the upper outer tube 21 move upward relative to the laser tube 23 together, while the laser tube 23 remains stationary; until the slot 231 is located on one side of the hole 251.

[0059] When the slot 231 is located on one side of the perforation 251, the outer elastic ring 28 will push the moving bead 26 towards the laser tube 23, with one end entering the slot 231. The middle ring 25 is engaged with the laser tube 23 via the moving bead 26. At this time, the middle elastic ring 27 and the inner elastic ring 29 remain compressed. The upper outer tube 21 continues to move upward relative to the laser tube 23. The middle ring 25 and the laser tube 23 remain in the same position under the thrust of the middle elastic ring 27 and the inner elastic ring 29. The middle elastic ring 27 and the inner elastic ring 29 gradually undergo elastic deformation and move towards their reset position. The elastic element 24 also undergoes elastic deformation. (See below) Figure 11 , Figure 12 .

[0060] Then the outer cylinder 21 continues to move upward relative to the laser cylinder 23, and the moving bead 26 moves to one side of the inner convex ring 213, see [reference]. Figure 13 .

[0061] When the accumulated elastic force from the elastic deformation of the elastic element 24 is greater than or equal to the combined elastic force of the intermediate elastic ring 27, the inner elastic ring 29, the weight of the intermediate ring 25 and the laser tube 23, and the resistance of the laser tube 23 to the laser tube replacement seat 5, or when the elastic deformation of the elastic element 24 reaches its maximum, the laser tube 23 will detach from the laser tube replacement seat 5. After detachment, the elastic element 24 will push the intermediate ring 25 and the laser tube 23 upwards relative to the outer cylinder 21 a short distance, and then gradually reach equilibrium. The intermediate ring 25 is clamped between the elastic element 24 and the intermediate elastic ring 27, and the intermediate ring 25 is held in place by the moving bead 26. This completes the replacement of the laser tube 23. See also Figure 14 .

[0062] For ease of use, the elastic element 24 is a spring, and / or the inner elastic ring 29 is a spring. The spring has good rigidity and can quickly return to its original position.

[0063] See Figures 4 to 14 The inner elastic ring 29, the middle elastic ring 27, and the outer elastic ring 28 are formed separately.

[0064] The inner elastic ring 29, the middle elastic ring 27, and the outer elastic ring 28 have different elastic properties. The inner elastic ring 29 can be made of rigid elastic components such as springs, while the middle elastic ring 27 can be made of delayed-reset elastic components such as rubber. The inner elastic ring 29 can be made of either rigid elastic components or delayed-reset elastic components, such as flexible plastics.

[0065] See Figure 4 The lower end of the intermediate elastic ring 27 is lower than the inner spring ring; initially, both the intermediate elastic ring 27 and the inner elastic ring 29 are deformed and have elasticity.

[0066] The initial state is the normal operating state of the laser processing head 3. At this time, the laser tube 23 and the intermediate ring 25 are connected as one unit through the moving bead 26. In order to avoid large-scale up and down movement due to vibration, in this embodiment, in the initial state, the intermediate spring ring abuts against the intermediate ring 25 and deforms, the inner elastic ring 29 abuts against the laser tube 23 and deforms, and the lower end of the intermediate ring 25 abuts against the elastic element 24. This makes the laser tube and the intermediate ring 25 clamped between the elastic element 24, the intermediate elastic ring 27, and the inner elastic ring 29, which plays a stabilizing role. The inner elastic ring 29 is a normal elastic material, such as a spring. Secondly, the elastic force of the elastic element 24 can be increased so that when separated, the elastic element 24 can push the intermediate ring 25 to move upward, the perforation 251 on the intermediate ring 25 can be located on one side of the inner elastic ring 29, and the moving bead 26 can disengage from the slot 231 and squeeze the inner elastic ring 29.

[0067] The lower end of the intermediate elastic ring 27 is lower than the inner spring ring, which allows the intermediate elastic ring 27 to deform more than the inner elastic ring 29. At the beginning of assembly, the laser tube 23 can push the intermediate ring 25 upward a greater distance by moving the bead 26 until the laser tube 23 and the inner elastic ring 29 come into contact.

[0068] See Figure 2 The lower end of the laser processing head 3 is provided with a chuck 31, which is clamped and connected to the upper end of the outer cylinder 21.

[0069] The chuck 31 is a rectangular frame with a receiving hole in the middle, serving as a laser transmission space. One side of the rectangular frame is broken in the middle, with connecting holes at both ends. One of the connecting holes is a threaded hole connected to a bolt. One end of the bolt passes through the other connecting hole and connects to the threaded hole. By rotating the bolt, the clamping force of the chuck 31 is adjusted, thereby clamping and connecting the upper outer cylinder 21. Using the chuck 31, the laser cylinder assembly 2 can be manually replaced, allowing the use of laser cylinders 23 of different sizes.

[0070] See Figure 1 The laser processing machine is equipped with a horizontal moving mechanism for driving the laser processing head 3 to move horizontally and a lifting mechanism for driving the worktable 1 to lift or the horizontal moving mechanism to lift.

[0071] The horizontal moving mechanism can be an XY moving mechanism, which can be existing technology. The lifting mechanism is a Z moving mechanism, used to drive the worktable 1 or the horizontal moving mechanism to move up and down. The lifting mechanism can also be existing technology. When the laser tube 23 is replaced, the upper outer tube 21 descends and rises relative to the worktable 1 or the laser tube replacement seat 5. This can be understood as: 1. Directly driving the horizontal moving mechanism and the laser processing head 3 to rise and fall, while the worktable 1 remains unchanged; 2. The horizontal moving mechanism and the laser processing head 3 remain unchanged, while driving the worktable 1 to rise and fall. In this embodiment, a horizontal moving mechanism and a lifting mechanism that drives the worktable 1 to rise and fall are used. Both the horizontal moving mechanism and the lifting mechanism are connected to the frame.

[0072] Specifically, the horizontal movement mechanism includes an XY movement mechanism capable of driving the laser processing head 3 to move laterally and longitudinally. The XY movement mechanism may include a horizontal linear module and a vertical linear module. The horizontal linear module is connected to the laser processing head 3, and the two ends of the horizontal linear module are respectively connected to the vertical linear module. The vertical linear module drives the horizontal linear module to move longitudinally, and the horizontal linear module drives the laser processing head 3 to move laterally. The vertical linear module is fixed to the frame, and the lifting mechanism is a vertical linear module connected to the worktable 1, driving the worktable 1 to move up and down.

[0073] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A laser processing machine, characterized in that: include: The workbench is equipped with a laser tube replacement holder, which has multiple laser tube insertion holes. A laser processing head, connected to a laser tube assembly; The laser tube assembly includes: Laser tube The upper outer cylinder has an inner convex ring at the lower end of its inner side surface, an upper annular groove with an elastic body at the upper end of its inner side surface, and an upper ring at the upper end of its upper outer cylinder. An intermediate ring is located between the outer cylinder and the laser cylinder. It has several through holes, and a movable bead is placed inside each through hole. A limiting part is provided on the side of the through hole near the laser cylinder to prevent the movable bead from falling off. An annular groove is provided on the upper outer side of the laser cylinder. The lower outer cylinder is connected to the upper outer cylinder at its upper end, and a lower ring is provided at its lower end. An elastic element is provided between the lower ring and the middle ring. The elastomer includes an inner elastic ring, a middle elastic ring, and an outer elastic ring. The middle elastic ring is a delayed reset elastic element. The lower end of the inner elastic ring abuts against the laser tube, and the lower end of the middle elastic ring abuts against the middle ring. Initially, the middle ring is located below the outer elastic ring.

2. The laser processing machine according to claim 1, characterized in that: The limiting part is a limiting ring; the inner diameter of the limiting ring is slightly smaller than the diameter of the moving bead, which restricts the moving bead from leaving the perforation.

3. The laser processing machine according to claim 1, characterized in that: The inner elastic ring, the middle elastic ring, and the outer elastic ring are formed separately.

4. The laser processing machine according to claim 1, characterized in that: The lower end of the intermediate elastic ring is lower than the inner spring ring; initially, both the intermediate elastic ring and the inner elastic ring are deformed and have elastic force.

5. The laser processing machine according to claim 1, characterized in that: The lower end of the upper outer cylinder is provided with a lower annular groove, and the upper end of the lower outer cylinder is provided with an annular connecting part that matches the lower annular groove. The annular connecting part is connected to the lower end of the upper outer cylinder.

6. The laser processing machine according to claim 1, characterized in that: The lower end of the laser processing head is provided with a chuck, which is clamped and connected to the upper end of the outer cylinder.

7. The laser processing machine according to claim 6, characterized in that: The chuck is made of a rectangular frame with a receiving hole in the middle of the frame. The receiving hole is a laser transmission space. One side of the rectangular frame is broken in the middle, and there are connection holes at both ends of this side. One of the connection holes is a threaded hole and a bolt is connected to it. One end of the bolt passes through the other connection hole and is connected to the threaded hole.

8. The laser processing machine according to claim 1, characterized in that: The laser processing machine is equipped with a horizontal moving mechanism for driving the laser processing head to move horizontally and a lifting mechanism for driving the worktable to rise or fall or the horizontal moving mechanism to rise or fall.

9. The laser processing machine according to claim 8, characterized in that: The horizontal movement mechanism includes an XY movement mechanism, which can drive the laser processing head to move laterally and longitudinally.

10. The laser processing machine according to claim 9, characterized in that: The XY moving mechanism includes a horizontal linear module and a vertical linear module. The horizontal linear module is connected to the laser processing head, and the two ends of the horizontal linear module are respectively connected to the vertical linear module. The vertical linear module drives the horizontal linear module to move vertically, and the horizontal linear module drives the laser processing head to move horizontally. The vertical linear module is fixed to the frame of the laser processing machine. The lifting mechanism is a vertical linear module and is connected to the worktable to drive the worktable to move up and down.

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