A laser drilling device for pipes

Abstract

The present application provides a tube laser punching device, which belongs to the field of laser processing technology, and comprises a frame and a feeding mechanism, a positioning mechanism and a laser cutting mechanism arranged on the frame; the frame is provided with a bearing plate, a bearing rod capable of being inserted into the inner cavity of the tube is provided in the middle of the bearing plate, an end of the bearing rod close to the laser cutting mechanism is connected with a skeleton through a spring for transverse sliding, and rubber rings capable of abutting against the inner wall of the tube are provided at both ends of the outer surface of the skeleton, and two scrapers are vertically slidably connected in the vertical hole provided on the bearing rod through a tension spring; a hydraulic cavity is provided inside the bearing rod, and the hydraulic cavity is connected with the vertical hole and the slide groove where the skeleton is located at the same time, and a locking member for locking the scraper in the vertical hole is provided on the bearing rod; the present application can reduce the probability of bending and deformation of the tube while removing burrs at the holes of the tube.

Description

Technical Field

[0001] The present application relates to the field of laser processing technology, and in particular to a tube laser drilling device. Background Art

[0002] Luggage trolleys are common aluminum alloy tubes. During their processing, laser cutting is usually used to process the spring bayonet holes and cut the tubes. When a high-power laser beam is focused and irradiated on the surface of the tube, the tube is quickly heated to the vaporization temperature and melted. At the same time, the molten metal can be removed by the cooperation of the blowing mechanism.

[0003] During this process, due to the shape of the tube itself, some of the melted metal debris can easily splash into the inside of the tube. During the subsequent use of the suitcase trolley, these metal debris will cause friction interference to the extension and retraction of the multi-section tubes. As the usage cycle increases, the tube may even be damaged and broken due to the long-term friction and scratching of the metal debris.

[0004] Referring to the Chinese patent application document with publication number CN116652417A and publication date August 29, 2023, entitled A Pipe Punching Machine, the pipe is rotated to pour out the metal debris remaining inside from the opening at the lower end of the pipe, and the pipe can also be shaken to make the discharge of metal debris more effective.

[0005] Referring to the above technical solution, after the pipe punching work is completed, burrs and flash will inevitably appear at the holes on the inner wall of the pipe. Compared with the metal debris splashed into the inside of the pipe, the burrs are often present in the form of adhesion on the inner wall of the pipe after formation, and it is difficult to effectively remove the burrs by conventional dumping methods; in addition, since the pipe retains a long length before cutting, when the pipe punching work is carried out in this case, the pipe may bend and deform due to its own weight, thereby affecting the accuracy of the punching work. Summary of the invention

[0006] In view of this, the present application provides a tube laser drilling device, which is mainly used to solve the problem that burrs at the holes of the tube are difficult to remove and the tube is easy to bend and deform during the processing.

[0007] In order to solve the above technical problems, the present application provides a tube laser drilling device, including a frame and a feeding mechanism, a positioning mechanism and a laser cutting mechanism arranged above the frame; a carrying plate is arranged on the frame, a carrying rod capable of being inserted into the inner cavity of the tube is arranged in the middle of the carrying plate, and a frame is connected to the end of the carrying rod close to the laser cutting mechanism through a spring for transverse sliding, and rubber rings capable of abutting against the inner wall of the tube are arranged at both ends of the outer surface of the frame, and the frame has a tendency to move rightward under the action of the spring, and two scrapers are vertically slidably connected in the vertical hole opened on the carrying rod through a tension spring, and the two scrapers have a tendency to approach each other and retract into the vertical hole under the action of the tension spring; a hydraulic cavity is opened inside the carrying rod, and the hydraulic cavity is connected to the vertical hole and the slide groove where the skeleton is located at the same time, and a locking member for locking the scraper inside the vertical hole is arranged on the carrying rod.

[0008] By adopting the above technical solution, the load-bearing rod that can be inserted into the pipe provides support for the pipe, thereby improving the stability of the pipe during processing. At the same time, the burrs and debris can be limited to a certain range with the help of two rubber rings. Finally, the burrs and debris inside the pipe are pushed out through the cooperation of the scraper and the two rubber rings.

[0009] Optionally, the locking member includes a locking block connected to the bearing rod by a transverse sliding connection of an elastic member, a locking groove for inserting the locking block is provided on the scraper, and the locking block can be pulled out from the locking groove when the frame moves to the left and applies pressure to the locking block.

[0010] By adopting the above technical solution, with the cooperation of the locking block and the locking groove, the position of the scraper can be locked to prevent the scraper from hindering the movement of the frame.

[0011] Optionally, a pressure relief valve is provided in the pressure relief hole opened inside the hydraulic cavity.

[0012] By adopting the above technical solution, when cutting fluid is used instead of hydraulic oil, the skeleton and the scraper can be reset by releasing pressure through the pressure relief valve, and after the cutting fluid is discharged, a protective liquid film will be formed on the inner wall of the pipe, reducing the probability of debris solidifying and adhering to the inner wall of the pipe.

[0013] Optionally, the supporting plate is composed of a coaxially arranged limit plate and a movable plate, the limit plate is fixedly connected to the frame, and a V-shaped support plate for supporting the tube material is arranged on the right side of the middle turntable of the limit plate, the movable plate is connected to the frame via a linear drive for transverse sliding, the supporting rod is arranged on the middle turntable of the movable plate, and the supporting rod can pass through an avoidance hole opened on the middle turntable of the limit plate.

[0014] By adopting the above technical solution, the position of the pipe can be kept unchanged during the unloading process, which is convenient for subsequent transportation work.

[0015] Optionally, the bearing rod is detachably connected to the movable plate by bolt connection, so as to be used for disassembly and replacement of the bearing rod.

[0016] By adopting the above technical solution, a suitable bearing rod can be selected according to the shape of the pipe.

[0017] Optionally, the limiting plate and the movable plate are both provided with angle adjustment components for adjusting the orientation angles of the bearing rods and the pipes.

[0018] Optionally, the angle adjustment assembly includes a motor arranged on the limit plate and the movable plate, a driving gear is arranged on the output shaft of the motor, and a large-diameter gear ring meshing with the driving gear is arranged on the middle turntable of the movable plate and the middle turntable of the limit plate.

[0019] By adopting the above technical solution, the bearing rod and the pipe can be driven to rotate together, so as to change the orientation angle of the pipe and meet the punching and cutting requirements of different surfaces of the pipe.

[0020] Optionally, the frame is hinged with multiple L-shaped cantilevers, and the horizontal arm body of each L-shaped cantilever is provided with a support roller for supporting the pipe. The frame is provided with a crank-connecting rod assembly for driving the multiple L-shaped cantilevers to rotate synchronously with their own hinge points as a reference.

[0021] By adopting the above technical solution, the support roller can provide support for the pipe, further improving the stability of the pipe during processing.

[0022] In summary, compared with the prior art, the present application has the following beneficial technical effects:

[0023] The burrs and debris are confined to a certain area by using two rubber rings, and then removed by scraping, reducing the possibility of debris residue inside the pipe. At the same time, the pipe can be supported internally during processing with the help of a load-bearing rod to ensure stability during processing, thereby reducing the probability of bending and deformation of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a tube laser drilling device for this application;

[0025] Figure 2 This is a schematic diagram of the structure of the carrier plate of this application;

[0026] Figure 3 For this application Figure 2 A partial enlarged view of the middle area A;

[0027] Figure 4 A cross-sectional view of the load-bearing bar of this application;

[0028] Figure 5 For this application Figure 4 A partial enlarged view of the middle area B;

[0029] Figure 6 This is a schematic diagram of the structure of the angle adjustment component of this application;

[0030] Figure 7 For this application Figure 1 A partial enlarged view of area C in the middle.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Feeding mechanism; 12. Positioning mechanism; 13. Laser cutting mechanism; 2. Carrying plate; 21. Limiting plate; 22. Movable plate; 23. V-shaped support plate; 24. Linear drive; 3. Carrying rod; 31. Skeleton; 32. Spring; 33. Rubber ring; 34. Vertical hole; 35. Tension spring; 36. Scraper; 4. Hydraulic cavity; 41. Pressure relief valve; 5. Locking piece; 51. Locking block; 52. Elastic piece; 53. Locking groove; 6. Angle adjustment assembly; 61. Motor; 62. Driving gear; 63. Large diameter gear ring; 7. L-shaped cantilever; 71. Support roller; 72. Crank connecting rod assembly. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 7 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0033] Reference Figure 1 and Figure 2 The present embodiment provides a tube laser drilling device, comprising a frame 1 and a carrier plate 2 arranged above it, a cleaning assembly, a feeding mechanism 11, a positioning mechanism 12 and a laser cutting mechanism 13. The carrier plate 2 is arranged on the frame 1 in a sliding connection manner, and a bearing rod 3 capable of being inserted into the inner cavity of the tube is arranged in the middle of the carrier plate 2 to provide support for the tube.

[0034] Among them, refer to Figure 3 , Figure 4 and Figure 5The cleaning assembly includes a frame 31, a spring 32, two rubber rings 33, a vertical hole 34, a tension spring 35, two scrapers 36, a hydraulic cavity 4 and a locking member 5. The frame 31 is slidably connected to the end of the load-bearing rod 3 near the laser cutting mechanism 13 through the spring 32. The two rubber rings 33 are respectively arranged at the left and right ends of the outer surface of the frame 31, and the two rubber rings 33 can abut against the inner wall of the pipe material. The frame 31 has a tendency to move to the right under the action of the spring 32; the vertical hole 34 is opened at one end of the load-bearing rod 3 near the laser cutting mechanism 13, and the two scrapers 36 are vertically slidably connected to the inside of the vertical hole 34 through the tension spring 35, and the two scrapers 36 are locked under the action of the tension spring 35. The hydraulic cavity 4 is opened inside the load-bearing rod 3, and the hydraulic cavity 4 is connected with the vertical hole 34 and the slide groove where the skeleton 31 is located at the same time; the locking member 5 includes a locking block 51 and a locking groove 53, the locking block 51 is connected to the load-bearing rod 3 by a transverse sliding connection through an elastic member 52, the locking groove 53 is opened on the scraper 36 and can be inserted by the locking block 51, when the skeleton 31 moves to the left and applies pressure to the locking block 51, the locking block 51 will be pulled out from the locking groove 53.

[0035] When the laser drilling of the pipe is carried out, the pipe is first fixed on the frame 1 through the cooperation of the bearing rod 3, the feeding mechanism 11 and the positioning mechanism 12, and the part of the pipe to be processed (the part to be punched and the part to be cut, and the former is located on the left side of the latter) is directly below the laser cutting mechanism 13. Then the external hydraulic oil is introduced into the hydraulic cavity 4, and the skeleton 31 will overcome the elastic force of the spring 32 due to the influence of the hydraulic oil and move to the left until the part of the pipe to be processed is between the two rubber rings 33. Before the skeleton 31 moves to the left, the scraper 36 will not move toward the outside of the vertical hole 34 due to the influence of the hydraulic oil under the locking effect produced by the cooperation of the locking block 51 and the locking groove 53; after the skeleton 31 moves to the left and applies pressure to the locking block 51, the locking block 51 will move to the left and be withdrawn from the locking groove 53, releasing the position lock of the scraper 36. At this time, as the hydraulic oil continues to flow in, the scraper 36 will overcome the tension of the tension spring 35 and extend out of the vertical hole 34 and abut against the inner wall of the pipe, and the part of the pipe to be processed will be between the scraper 36 and the rubber ring 33 on the right.

[0036] Then the laser cutting mechanism 13 punches holes in the pipe, and then the feeding mechanism 11 and the positioning mechanism 12 cooperate to move the pipe to the left for a certain distance, at which time the scraper 36 can scrape off the burrs at the punching position on the inner wall of the pipe. Then the laser cutting mechanism 13 cuts the pipe again, and at this time the punching position of the pipe is already on the left side of the two rubber rings 33, while the position to be cut is still between the two rubber rings 33. After the cutting work is completed, the hydraulic oil in the hydraulic cavity 4 is pumped out by the external oil pump, thereby removing the pressure inside the hydraulic cavity 4 to reset the scraper 36 and the skeleton 31 in turn, and in the process of the skeleton 31 resetting to the right, the rubber ring 33 on the left can push the debris in the cut pipe cavity to the right; then the personnel move the bearing plate 2 and the bearing rod 3 to the left and pull them out from the inside of the pipe to complete the unloading work of the cut pipe, and in this process, the rubber ring 33 on the right can push the debris in the unprocessed pipe cavity to the left.

[0037] Reference Figure 4 A pressure relief valve 41 is arranged in the pressure relief hole opened inside the hydraulic cavity 4.

[0038] When the hydraulic cavity 4 participates in the displacement driving process of the skeleton 31 and the scraper 36, cutting fluid can be used instead of hydraulic oil. When the pressure inside the hydraulic cavity 4 increases to cause the skeleton 31 and the scraper 36 to displace, as the pressure inside the hydraulic cavity 4 continues to increase and reaches the limit value of the pressure relief valve 41, the pressure relief valve 41 will open to complete the pressure relief action, so that the skeleton 31 and the scraper 36 complete the reset action, and the cutting fluid will form a layer of protective liquid film on the inner wall of the pipe after being discharged from the hydraulic cavity 4 to the inner cavity of the pipe. When the debris generated by laser cutting enters the inner cavity of the pipe, the cooling of the protective liquid film is used to reduce the thermal expansion of the metal debris, thereby reducing the probability of the debris solidifying and adhering to the inner wall of the pipe.

[0039] Reference Figure 2 and Figure 6 The bearing plate 2 includes a limit plate 21, a movable plate 22 and a V-shaped support plate 23. The limit plate 21 and the movable plate 22 are coaxially arranged, and the limit plate 21 is fixedly connected to the frame 1. A V-shaped support plate 23 for supporting the tube material is arranged on the right side of the middle turntable of the limit plate 21. The movable plate 22 can slide laterally along the frame 1 driven by the linear drive 24; the bearing rod 3 is detachably connected to the middle turntable of the movable plate 22 by bolt connection, and the bearing rod 3 can pass through the avoidance hole opened on the middle turntable of the limit plate 21.

[0040] When the cut pipe is being unloaded, the movable plate 22 slides to the left along the frame 1 driven by the linear drive 24, so that the load-bearing rod 3 is pulled out from the inside of the cut pipe, and the cut pipe will remain stationary under the blocking and supporting action of the limit plate 21 and the V-shaped support plate 23 until the load-bearing rod 3 is completely pulled out from the inner cavity of the cut pipe, and the unloading of the cut pipe is completed.

[0041] Reference Figure 6 , the limiting plate 21 and the movable plate 22 are both provided with an angle adjustment assembly 6 for adjusting the orientation angle of the bearing rod 3 and the pipe. The angle adjustment assembly 6 comprises a motor 61, a driving gear 62 and a large diameter gear ring 63. The two motors 61 are respectively provided on the limiting plate 21 and the movable plate 22, and the output shafts of the motors 61 are both provided with driving gears 62. The two large diameter gear rings 63 are respectively provided on the middle rotating plate of the movable plate 22 and the middle rotating plate of the limiting plate 21. The two large diameter gear rings 63 correspond to and mesh with the two driving gears 62 one by one.

[0042] During the processing of the pipe, when the motor 61 runs to drive the driving gear 62 to rotate, the bearing rod 3 will drive the pipe to rotate due to the meshing connection relationship between the driving gear 62 and the large diameter gear ring 63, so as to change the orientation angle of the pipe and meet the punching and cutting requirements of different surfaces of the pipe.

[0043] Reference Figure 1 and Figure 7 A plurality of L-shaped cantilevers 7 are hinged on the frame 1, and a support roller 71 for supporting the pipe is arranged on the horizontal arm body of each L-shaped cantilever 7. A crank connecting rod assembly 72 is arranged on the frame 1 for driving the plurality of L-shaped cantilevers 7 to rotate synchronously with their own hinge points as reference.

[0044] During the processing of the pipe, the crank connecting rod assembly 72 can operate according to the processing requirements of the pipe, thereby driving the multiple L-shaped cantilevers 7 to rotate synchronously based on their own hinge points, so that the support rollers 71 provide support for the pipe and improve the stability of the pipe during processing.

[0045] The implementation principle of a tube laser drilling device in the embodiment of the present application is:

[0046] When carrying out laser drilling of pipes, the pipes are first fixed on the frame 1 through the cooperation of the bearing rods 3, the feeding mechanism 11 and the positioning mechanism 12, and at the same time, the parts of the pipes to be processed (the positions to be punched and the positions to be cut, with the former located on the left side of the latter) are directly below the laser cutting mechanism 13.

[0047] Then, the external hydraulic oil is introduced into the hydraulic cavity 4, and the frame 31 will overcome the elastic force of the spring 32 due to the influence of the hydraulic oil and move to the left until the part of the pipe to be processed is between the two rubber rings 33. Before the frame 31 moves to the left, the scraper 36 will not move toward the outside of the vertical hole 34 due to the influence of the hydraulic oil under the locking effect of the locking block 51 and the locking groove 53; and after the frame 31 moves to the left and applies pressure to the locking block 51, the locking block 51 will move to the left and be withdrawn from the locking groove 53, releasing the position lock of the scraper 36. At this time, as the hydraulic oil continues to be introduced, the scraper 36 will overcome the tension of the tension spring 35 and extend out of the vertical hole 34 and abut against the inner wall of the pipe, and the part of the pipe to be processed will be between the scraper 36 and the rubber ring 33 on the right.

[0048] Then the laser cutting mechanism 13 punches holes in the pipe, and then the feeding mechanism 11 and the positioning mechanism 12 cooperate to move the pipe to the left for a certain distance, at which time the scraper 36 can scrape off the burrs at the punching position on the inner wall of the pipe. Then the laser cutting mechanism 13 cuts the pipe again, at which time the punching position of the pipe is already on the left side of the two rubber rings 33, and the position to be cut is still between the two rubber rings 33.

[0049] After the cutting work is completed, the hydraulic oil in the hydraulic cavity 4 is extracted by an external oil pump, thereby relieving the pressure in the hydraulic cavity 4 and resetting the scraper 36 and the skeleton 31 in sequence, and in the process of resetting the skeleton 31 to the right, the rubber ring 33 on the left can push the debris in the cut pipe cavity to the right; then the personnel move the supporting plate 2 and the supporting rod 3 to the left and extract them from the inside of the pipe to complete the unloading work of the cut pipe, and in this process, the rubber ring 33 on the right can push the debris in the unprocessed pipe cavity to the left.

[0050] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A tube laser drilling device, comprising a frame (1) and a feeding mechanism (11), a positioning mechanism (12) and a laser cutting mechanism (13) arranged above the frame, characterized in that: The frame (1) is provided with a bearing plate (2), a bearing rod (3) capable of being inserted into the inner cavity of a pipe is provided in the middle of the bearing plate (2), one end of the bearing rod (3) close to the laser cutting mechanism (13) is connected to a frame (31) in a transverse sliding manner via a spring (32), and both left and right ends of the outer surface of the frame (31) are provided with rubber rings (33) capable of abutting against the inner wall of the pipe, and the frame (31) has a tendency to move rightward under the action of the spring (32), and two scrapers (36) are vertically slidably connected in a vertical hole (34) provided on the bearing rod (3) via a tension spring (35), and the two scrapers (36) have a tendency to approach each other and retract into the interior of the vertical hole (34) under the action of the tension spring (35); A hydraulic cavity (4) is provided inside the bearing rod (3), and the hydraulic cavity (4) is communicated with the vertical hole (34) and the slide groove where the frame (31) is located. A locking piece (5) for locking the scraper (36) inside the vertical hole (34) is provided on the bearing rod (3).

2. A tube laser drilling device according to claim 1, characterized in that: The locking member (5) comprises a locking block (51) which is laterally slidably connected to the bearing rod (3) via an elastic member (52); a locking groove (53) for inserting the locking block (51) is provided on the scraper (36); and when the frame (31) moves leftward to apply pressure to the locking block (51), the locking block (51) can be drawn out from the locking groove (53).

3. A tube laser drilling device according to claim 1, characterized in that: A pressure relief valve (41) is provided in the pressure relief hole opened inside the hydraulic cavity (4).

4. The tube laser drilling device according to claim 1, characterized in that: The bearing plate (2) is composed of a coaxially arranged limiting plate (21) and a movable plate (22); the limiting plate (21) is fixedly connected to the frame (1); a V-shaped support plate (23) for supporting the tube is arranged on the right side of the central rotating plate of the limiting plate (21); the movable plate (22) is slidably connected to the frame (1) via a linear drive (24); a bearing rod (3) is arranged on the central rotating plate of the movable plate (22); and the bearing rod (3) can pass through an avoidance hole provided on the central rotating plate of the limiting plate (21).

5. A tube laser drilling device according to claim 4, characterized in that: The bearing rod (3) is detachably connected to the movable plate (22) by means of bolt connection, and is used for disassembling and replacing the bearing rod (3).

6. A tube laser drilling device according to claim 4, characterized in that: The limiting plate (21) and the movable plate (22) are both provided with an angle adjustment component (6) for adjusting the orientation angle of the bearing rod (3) and the pipe.

7. A tube laser drilling device according to claim 6, characterized in that: The angle adjustment assembly (6) comprises a motor (61) arranged on the limit plate (21) and the movable plate (22), a driving gear (62) being arranged on the output shaft of the motor (61), and a large-diameter gear ring (63) meshing with the driving gear (62) being arranged on the middle rotating plate of the movable plate (22) and the middle rotating plate of the limit plate (21).

8. The tube laser drilling device according to claim 1, characterized in that: The frame (1) is hinged with a plurality of L-shaped cantilevers (7), and a support roller (71) for supporting the pipe is provided on the horizontal arm body of each L-shaped cantilever (7). The frame (1) is provided with a crank connecting rod assembly (72) for driving the plurality of L-shaped cantilevers (7) to rotate synchronously with the hinge point thereof as a reference.

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