A laser pipe cutting machine

Abstract

The application relates to the technical field of laser cutting, and discloses a laser pipe cutting machine, which comprises a machine body, a first clamping part, a second clamping part and a laser cutting part connected to the first clamping part, the second clamping part can slide on the machine body in the direction of approaching or moving away from the first clamping part, further comprising a supporting table slidingly connected to the machine body, a supporting rod is rotationally connected to the supporting table, a connecting block is connected to the end of the supporting rod away from the supporting table, a ring groove is formed between the end of the supporting rod and the connecting block, and a driving source for driving the supporting rod and the first clamping part to synchronously rotate is arranged on the supporting table. The application can improve the flatness of a cutting section during pipe cutting.

Description

Technical Field

[0001] This application relates to the field of laser cutting technology, and in particular to a laser tube cutting machine. Background Technology

[0002] With the development of construction, sports equipment, and machinery hardware, the application of hollow pipes has gradually increased. Traditional blade-type cutting equipment for pipe cutting suffers from low cutting efficiency and a high risk of accidents. Laser pipe cutting machines, on the other hand, focus a high-power laser beam through a cutting head to a single point, rapidly ablating the pipe surface to achieve the purpose of cutting the workpiece. Due to its high safety profile, laser pipe cutting machines are widely used for pipe cutting.

[0003] Referring to the figure, the laser tube cutting machine includes a machine table 1, on which a first positioning plate 2 and a second positioning plate 3 are mounted. A laser cutting head 4 is mounted on the first positioning plate 2, and the laser cutting head 4 can move up and down via a cylinder or similar drive mechanism. The first positioning plate 2 and the second positioning plate 3 can rotate via pulleys. A slide rail 15 is mounted on the machine table 1, allowing the second positioning plate 3 to slide on the machine table 1. During cutting, the tube is clamped by the first positioning plate 2 and the second positioning plate 3, with one end of the tube extending beyond the first positioning plate 2. Then, the laser cutting head 4 cuts the tube, and the first positioning plate 2 and the second positioning plate 3 synchronously drive the tube to rotate. The tube is cut off after one rotation.

[0004] During the cutting process, since the part of the pipe being cut is not completely separated, it will also rotate synchronously with the pipe. Therefore, as the connection between the part being cut and the pipe becomes smaller and smaller, the connection will be subjected to greater and greater tensile force, resulting in defects such as burrs and stringing on the cut surface at the end. Summary of the Invention

[0005] To improve the flatness of the pipe cut surface during cutting, this application provides a laser pipe cutting machine.

[0006] The technical solution adopted in this application is as follows: A laser tube cutting machine includes a body, a first clamping part and a second clamping part mounted on the body, and a laser cutting part connected to the first clamping part. The second clamping part is slidable on the body in a direction close to or away from the first clamping part. The machine also includes a support platform slidably connected to the body. A support rod is rotatably connected to the support platform. A connecting block is connected to the end of the support rod away from the support platform. An annular groove is formed between the end of the support rod and the connecting block. A drive source for driving the support rod and the first clamping part to rotate synchronously is mounted on the support platform. The sliding direction of the support platform is parallel to the second clamping part, and a spreading member is provided on the outer wall of the connecting block; during cutting, the pipe is sleeved on the outer wall of the support rod, the support platform slides to the position of the annular groove corresponding to the laser cutting part, and the spreading member abuts against the inner wall of the pipe; then the first clamping part and the second clamping part clamp the pipe, synchronously driving the pipe to rotate and cut, and the driving source drives the support rod and the pipe to rotate synchronously.

[0007] By adopting the above technical solution, during cutting, the second clamping part and the first clamping part clamp the pipe, and then drive the pipe to rotate, so that it can be cut by the laser cutting part. After the cutting is completed, the second clamping part continues to move closer to the first clamping part, and then the cutting continues. During the cutting process, the support rod passes through the pipe, and under the action of the connecting block, the part to be cut is connected to the support rod. The support rod rotates synchronously with the pipe through the drive source. Therefore, during the cutting process, the part of the pipe to be cut also rotates synchronously, so it is not easy to affect the cutting surface.

[0008] Optionally, the expanding member includes an elastic ring, and the elastic ring is sleeved on the outer wall of the connecting block. A sliding ring is also slidably sleeved on the connecting block. A power member is installed on the support platform. The power member is used to drive the sliding ring to slide to squeeze the elastic ring, so that the elastic ring can deform and press against the inner wall of the pipe.

[0009] By adopting the above technical solution, before cutting, the power component drives the sliding ring to slide, so that the sliding ring squeezes the elastic ring, and the elastic ring presses against the inner wall of the pipe, thereby causing the support rod to rotate synchronously and drive the pipe to be cut to rotate, thereby reducing the tearing of the cut end face.

[0010] Optionally, the sliding ring is provided with an extension rod, and the side wall of the support rod is provided with a groove for the extension rod to slide. The power component is connected to the extension rod to drive the extension rod to slide, and thus drive the sliding ring to slide.

[0011] By adopting the above technical solution, the sliding ring is connected to the power component through the extension rod, which facilitates the sliding of the sliding ring.

[0012] Optionally, a turntable is rotatably connected to the support platform, and a connecting seat is installed on the turntable. The support rod is rotatably connected to the connecting seat, and the power component is installed on the connecting seat. A first element for driving the turntable to rotate is installed on the support platform.

[0013] By adopting the above technical solution, the turntable can rotate, the support platform slides and disengages from the second clamping part, then the turntable rotates, a new pipe is installed on the support rod, and then it rotates back to its original position. Then the second clamping part is reset, and the support platform slides to the position of the laser cutting part corresponding to the annular groove.

[0014] Optionally, the power component includes a power cylinder mounted on the connecting seat, and a connecting ring is connected to one end of the extension rod near the connecting seat, and the power cylinder and the connecting ring are connected.

[0015] By adopting the above technical solution, the extension rod can be driven to slide by a power cylinder.

[0016] Optionally, the drive source includes a drive motor mounted on the support platform, a synchronous pulley coaxially connected to the outer wall of the support rod, a synchronous pulley also connected to the output shaft of the drive motor, and a synchronous belt connecting the two synchronous pulleys.

[0017] By adopting the above technical solution, the timing belt connects the two timing pulleys together, thereby realizing the rotation of the support rod.

[0018] Optionally, a gantry frame is mounted on the support platform, the turntable is rotatably connected to the gantry frame, a rotating shaft is connected to the turntable, and the rotating shaft is rotatably connected to the gantry frame. The first element includes a worm gear coaxially connected to the outer wall of the rotating shaft and a worm rotatably connected to the gantry frame, the worm and the worm gear meshing with each other.

[0019] By adopting the above technical solution, the turntable is driven to rotate by a worm gear, making the turntable rotate more stably and less prone to shaking.

[0020] Optionally, the support rod is a hollow structure extending to both ends, an air source is installed on the support platform, the air source is connected to the end of the support rod, and the inner wall of the annular groove is a hollow structure and communicates with the inner cavity of the support rod.

[0021] By adopting the above technical solution, the support rod is ventilated during cutting, which can blow away the cutting sparks and heat, thereby improving the cutting efficiency.

[0022] Optionally, it also includes a material support frame, on which two drive rollers are rotatably connected, the tube passes between the two drive rollers, and a second element for driving the drive rollers to rotate is mounted on the material support frame.

[0023] By adopting the above technical solution, after the pipe is cut, the transmission roller rotates to remove the cut pipe from the support rod.

[0024] In summary, this application includes at least one of the following beneficial effects: 1. During cutting, the pipe and the support rod are connected together by the support member on the connecting block. The rotation of the support rod can drive the pipe to rotate synchronously. Even after the pipe is cut, the cut pipe is not easy to rotate relative to the pipe, thereby improving the flatness of the cut end face. 2. The turntable can rotate on the support platform, making it easy to place new pipes. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the related technology; Figure 2 This is a schematic diagram of the cutting process according to an embodiment of this application; Figure 3 This is a schematic diagram of the concealed pipe in an embodiment of this application; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the connection of the support platform in an embodiment of this application; Figure 6 This is a schematic diagram illustrating the worm gear in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Machine base; 2. First positioning plate; 3. Second positioning plate; 4. Laser cutting head; 5. Machine body; 6. First clamping part; 7. Second clamping part; 8. Laser cutting part; 9. Support platform; 10. Support rod; 11. Connecting block; 12. Ring groove; 13. Drive source; 131. Drive motor; 132. Synchronous pulley; 133. Synchronous belt; 14. Spreading component; 141. Elastic ring; 142. Sliding ring; 15. Slide rail; 16. Extension rod; 17. Power component; 171. Power cylinder; 172. Connecting ring; 18. Slide groove; 19. Turntable; 20. Connecting seat; 21. First element; 211. Rotating shaft; 212. Worm gear; 213. Worm; 22. Gantry frame; 23. Air source; 24. Transmission roller. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 2-6 This application will be described in further detail.

[0028] This application discloses a laser tube cutting machine. (Refer to...) Figure 2 and Figure 3 The laser cutting machine includes a body 5, a first clamping part 6 mounted on the body 5, a second clamping part 7 connected to the body 5, and a laser cutting part 8 connected to the first clamping part 6. The first clamping part 6 is mounted at one end of the body 5, and a slide rail 15 is mounted on the body 5. The second clamping part 7 is slidably connected to the slide rail 15 and can slide towards or away from the first clamping part 6.

[0029] Both the first clamping part 6 and the second clamping part 7 are equipped with clamping plates, which are used to position the pipe. The clamping plates are rotatably connected to the first clamping part 6 and the second clamping part 7, respectively, and are driven to rotate by a synchronous belt 133. That is, the pipe passes through the second clamping part 7 and the first clamping part 6, and then the clamping plate of the second clamping part 7 clamps the pipe. The second clamping part 7 slides closer to the first clamping part 6, so that one end of the pipe extends beyond the first clamping part 6; this part is the portion to be cut. Then, the laser cutting part 8 performs the cutting, and the clamping plate rotates simultaneously, driving the pipe to rotate with the synchronous belt 133. The laser can then cut the pipe circumferentially. The second clamping part 7 can rotate via chain drive, lead screw, gear rack, etc. In this embodiment, the second clamping part 7 is rotatably connected to a gear, which is driven to rotate by a motor. A rack that meshes with the gear is fixed on the slide rail 15 of the machine body 5, thus achieving rotation via a gear rack.

[0030] Reference Figure 3 and Figure 4 A support platform 9 is also installed on the body 5. The sliding direction of the support platform 9 is parallel to the sliding direction of the second clamping part 7, and the sliding structure of the support platform 9 is the same as that of the second clamping part 7. A support rod 10 is rotatably connected to the support platform 9, and a drive source 13 for driving the support rod 10 to rotate is installed on the support platform 9. The rotation axis of the support rod 10 is parallel to the sliding direction of the second clamping part 7. The support rod 10 has a cylindrical structure, and a connecting block 11 is connected to the end of the support rod 10 away from the support platform 9. The connecting block 11 also has a cylindrical structure. An annular groove 12 is formed at the connection between the end of the support rod 10 and the connecting block 11. A spreading member 14 is also installed on the outer wall of the connecting block 11, and the spreading member 14 can abut against the inner wall of the pipe.

[0031] During cutting, the pipe is first fitted onto the outer wall of the support rod 10, with the pipe and support rod 10 passing through the first clamping part 6 and the second clamping part 7. Then, the support table 9 slides to the position of the annular groove 12 corresponding to the laser cutting part 8. Based on the required cutting length, the second clamping part 7 is driven to slide, and then the second clamping part 7 and the first clamping part 6 clamp the pipe and rotate it. During rotation, the laser cuts. During the cutting process, the connecting block 11 is pressed against the inner wall of the pipe by the spreading member 14. Therefore, while the drive source 13 synchronously drives the support rod 10 to rotate synchronously with the pipe, the portion of the pipe to be cut off can always rotate synchronously, even after it is cut off. Therefore, there is no tearing force on the cutting surface during the pipe cutting and separation process. After cutting, the cut pipe is removed, and the second clamping part 7 continues to slide closer to the first clamping part 6, and then the next cut is performed.

[0032] Reference Figure 4 The support member 14 includes an elastic ring 141 fitted into the stepped groove. The elastic ring 141 is made of elastic material such as rubber or silicone. A sliding ring 142 is also slidably fitted into the stepped groove. A power member 17 is installed on the support platform 9. The power member 17 is used to drive the sliding ring 142 to slide, thereby pressing against the elastic ring 141 and squeezing the elastic ring 141 to deform it, so that the elastic ring 141 presses against the inner wall of the pipe.

[0033] Reference Figure 4 and Figure 5 In a further embodiment, an extension rod 16 is fixed on the sliding ring 142. The extension rod 16 slides synchronously through the connecting block 11 and the support rod 10, and extends in the direction of the support platform 9. That is, a groove 18 is provided on the support rod 10. The extension rod 16 passes through the connecting block 11 and is slidably connected to the support rod 10. One end of the groove 18 extends to the surface of the support rod 10 and is connected to the power component 17.

[0034] Furthermore, a gantry frame 22 is mounted on the support platform 9, a turntable 19 is rotatably mounted on the gantry frame 22, and a connecting seat 20 is mounted on the turntable 19. The support rod 10 is rotatably mounted on the connecting seat 20, and the power component 17 is also mounted on the connecting seat 20. The power component 17 includes a power cylinder 171 mounted on the connecting seat 20. Preferably, two extension rods 16 are provided, and the ends of the extension rods 16 extend from the surface of the support rod 10 and are fixed with connecting rings 172. The piston rod of the power cylinder 171 is connected to the connecting ring 172. The power cylinder 171 drives the connecting ring 172 to slide, thereby driving the sliding ring 142 to slide.

[0035] Furthermore, the turntable 19 is rotatably mounted on the gantry frame 22, and a first element 21 for driving the turntable 19 to rotate is mounted on the support platform 9. The turntable 19 has a disc-shaped structure, and the axis of rotation of the turntable 19 is perpendicular to the sliding direction of the support platform 9. A rotating shaft 211 is fixed to the lower surface of the turntable 19, and the rotating shaft 211 is rotatably connected to the gantry frame 22 through bearings or other means. Figure 6 The lower surface of the gantry frame 22 has a hollowed-out section. A rotating shaft 211 extends through the hollowed-out section of the gantry frame 22. The first element 21 includes a worm gear 212 coaxially connected to the outer wall of the rotating shaft 211, and a worm 213 rotatably connected to the lower surface of the gantry frame 22. The worm 213 and the worm gear 212 mesh. The worm 213 can be driven to rotate by a motor. When installing new pipes, the turntable 19 rotates, causing the support rod 10 to rotate to the side. After the new pipe is fitted, the support rod 10 is rotated back to its original position.

[0036] Furthermore, refer to Figure 5The drive source 13 includes a drive motor 131 mounted on the turntable 19. One end of the support rod 10, away from the second clamping part 7, extends beyond the surface of the connecting seat 20, and a synchronous pulley 132 is coaxially fixed to its outer wall. A synchronous pulley 132 is also coaxially fixed to the output shaft of the drive motor 131, and a synchronous belt 133 connects the two synchronous pulleys 132. Thus, the drive motor 131 can drive the support rod 10 to rotate, and the rotation speed and direction are consistent with those of the pipe.

[0037] In a further embodiment, the support rod 10 has an internal hollow structure, with the hollow extending to both ends of the support rod 10. An air source 23, preferably an air pump, is installed on the support platform 9 and is connected via a pipe to the end of the support rod 10 opposite to the second clamping part 7. The pipe and the support rod 10 are rotatably connected, without interfering with the rotation of the support rod 10. The inner wall of the annular groove 12 has a hollow structure that communicates with the inner cavity of the support rod 10. During cutting, the air source 23 continuously supplies air, allowing sparks and heat from the cutting process to be blown out from the interior of the support rod 10.

[0038] In a further embodiment, a material support frame is placed at the discharge end of the laser cutting machine. Two drive rollers 24 are rotatably connected to the material support frame, and the drive rollers 24 are rotated by a motor. The tube to be cut is located between the two drive rollers 24. After the tube is cut, the support member 14 releases the tube from its positioning, and then the drive rollers 24 rotate, thereby causing the tube to detach from the connecting block 11, thus facilitating unloading.

[0039] The implementation principle of a laser tube cutting machine according to an embodiment of this application is as follows: during cutting, the support rod 10 and the tube rotate synchronously, and the expansion member 14 on the connecting block 11 abuts against the inner wall of the tube, so that the part of the tube to be cut rotates synchronously and is less likely to affect the cutting surface.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laser tube cutting machine, comprising a body (5), a first clamping part (6) mounted on the body (5), a second clamping part (7), and a laser cutting part (8) connected to the first clamping part (6), wherein the second clamping part (7) is slidable on the body (5) in a direction close to or away from the first clamping part (6), characterized in that: It also includes a support platform (9) slidably connected to the body (5), a support rod (10) rotatably connected to the support platform (9), a connecting block (11) connected to one end of the support rod (10) away from the support platform (9), an annular groove (12) is formed between the end of the support rod (10) and the connecting block (11), and a drive source (13) for driving the support rod (10) and the first clamping part (6) to rotate synchronously is installed on the support platform (9). The sliding direction of the support platform (9) is parallel to that of the second clamping part (7), and a spreading member (14) is provided on the outer wall of the connecting block (11). When cutting, the pipe is sleeved on the outer wall of the support rod (10), the support platform (9) slides to the position of the annular groove (12) corresponding to the laser cutting part (8), and the spreading member (14) abuts against the inner wall of the pipe. Then the first clamping part (6) and the second clamping part (7) clamp the pipe, synchronously drive the pipe to rotate and cut, and the driving source (13) drives the support rod (10) and the pipe to rotate synchronously. The expansion member (14) includes an elastic ring (141), and the elastic ring (141) is sleeved on the outer wall of the connecting block (11). A sliding ring (142) is also slidably sleeved on the connecting block (11). A power member (17) is installed on the support platform (9). The power member (17) is used to drive the sliding ring (142) to slide to squeeze the elastic ring (141), so that the elastic ring (141) can deform and press against the inner wall of the pipe. An extension rod (16) is provided on the sliding ring (142). The side wall of the support rod (10) is provided with a groove (18) for the extension rod (16) to slide. The power component (17) is connected to the extension rod (16) to drive the extension rod (16) to slide and drive the sliding ring (142) to slide. A turntable (19) is rotatably connected to the support platform (9), and a connecting seat (20) is installed on the turntable (19). The support rod (10) is rotatably connected to the connecting seat (20), and the power component (17) is installed on the connecting seat (20). A first element (21) for driving the turntable (19) to rotate is installed on the support platform (9).

2. The laser tube cutting machine according to claim 1, characterized in that: The power component (17) includes a power cylinder (171) mounted on the connecting seat (20), and a connecting ring (172) is connected to one end of the extension rod (16) near the connecting seat (20). The power cylinder (171) and the connecting ring (172) are connected together.

3. A laser tube cutting machine according to claim 2, characterized in that: The drive source (13) includes a drive motor (131) mounted on the support platform (9), a synchronous pulley (132) coaxially connected to the outer wall of the support rod (10), a synchronous pulley (132) also connected to the output shaft of the drive motor (131), and a synchronous belt (133) connected between the two synchronous pulleys (132).

4. A laser tube cutting machine according to claim 3, characterized in that: A gantry frame (22) is installed on the support platform (9). The turntable (19) is rotatably connected to the gantry frame (22). A rotating shaft (211) is connected to the turntable (19). The rotating shaft (211) is rotatably connected to the gantry frame (22). The first element (21) includes a worm gear (212) coaxially connected to the outer wall of the rotating shaft (211) and a worm (213) rotatably connected to the gantry frame (22). The worm (213) and the worm gear (212) mesh with each other.

5. A laser tube cutting machine according to claim 3, characterized in that: The support rod (10) is a hollow structure extending to both ends. An air source (23) is installed on the support platform (9). The air source (23) is connected to the end of the support rod (10). The inner wall of the annular groove (12) is a hollow structure and is connected to the inner cavity of the support rod (10).

6. A laser tube cutting machine according to claim 3, characterized in that: It also includes a material support frame, on which multiple rollers are installed, and a second element is installed on the material support frame to drive the rollers to move up and down, so that the rollers extend beyond the surface of the material support frame or are stored under the material support frame; The material support rack is also equipped with a third element, which can press the cut pipe against the roller.

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