Laser cutting machine for automobile suspension swing arm

Abstract

The invention relates to the field of laser cutting, and particularly discloses an automobile suspension swing arm laser cutting machine which comprises a main body block and a cutting head, a through hole for bearing a refractor barrel is formed in the main body block, the automobile suspension swing arm laser cutting machine further comprises a protection assembly, and the protection assembly comprises fixing plates hinged to each other and a fixing block arranged in the main body block. According to the invention, when a protection lens directly facing a refractor barrel is dirty and needs to be cleaned, the machine is stopped, two sealing cover plates on a main body block are removed, then a fixing plate in one mounting groove is overturned to a horizontal state and is pushed along the main body block, and the fixing plate in the main body block is pushed out for replacement; after replacement, the pushed-out fixing plate is turned over and fixed to the mounting groove, replacement is completed, the replaceable protection lens is mounted on the main body block in advance, the main body block does not need to be disassembled in the replacement process, the replacement speed is high, operation is easy, the shutdown time is short, and the production recovery speed is increased.

Description

Technical Field

[0001] This invention relates to laser cutting technology, specifically a laser cutting machine for automotive suspension arms. Background Technology

[0002] As is widely known, the automotive suspension arm is an important component of the vehicle suspension. It is made of steel or aluminum alloy. When producing steel alloy automotive suspension arms, a laser cutting machine is used to cut the steel plate, followed by stamping, welding, and electrophoresis processes. The fiber laser cutting machine is equipped with three lens modules: a collimation module, a focusing module, and a protection module, to focus the light. In daily use, the fiber laser cutting machine has low wear and tear, and only the lens of the protection module needs to be cleaned.

[0003] For example, the invention patent with application publication number CN105562944B, application publication date June 13, 2017, entitled "A Cutting Head for a Laser Cutting Machine," includes a focusing assembly, a beam expander assembly fixedly installed above the focusing assembly, a protective device fixedly installed below the focusing assembly, and a cutting nozzle located below the protective device. The focusing assembly includes a closing device; the closing device includes a left closing portion and a right closing portion; the left closing portion includes a pair of crescent-shaped left closing plates and a left rotating shaft; the left closing plates are respectively fixed at both ends of the left rotating shaft; the right closing portion includes a pair of crescent-shaped right closing plates and a right rotating shaft; the right closing plates are respectively fixed at both ends of the right rotating shaft. The advantage of this invention is that, due to the presence of the closing device, the focusing lens can be effectively protected from contamination when the protective lens is replaced.

[0004] The shortcomings of the existing technology are that the protective lens of the protection module is divided into an upper protective lens and a lower protective lens. The lower protective lens faces the ceramic head of the cutting head and the steel plate being cut, making it more susceptible to adhesion from the escaping fumes. The dirt adhered by the fumes can cause changes in the optical path, resulting in a lower focal point and energy attenuation. In this case, the protective lens needs to be replaced to maintain cutting efficiency. However, the protective module on the cutting head needs to be removed during the replacement. This step requires the disassembly of the cutting head in a cleanroom. The disassembly process requires dust removal and cleaning to prevent dust and dirt from contaminating the laser emitter, making the process cumbersome. Summary of the Invention

[0005] The purpose of this invention is to provide a laser cutting machine for automotive suspension arms to overcome the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a laser cutting machine for automotive suspension control arms, comprising a main body block and a cutting head, wherein the main body block has a through hole for supporting a refractive mirror tube, and further comprises a protective component, which includes two fixed plates hinged to each other and a fixed block disposed within the main body block, wherein the fixed block has a sliding groove, and a protective lens is disposed on the fixed plate, wherein the main body block has symmetrically formed mounting grooves, wherein one of the fixed plates is slidably connected in the sliding groove and aligned with the refractive mirror tube, and the other fixed plate is flipped and disposed in the mounting groove.

[0007] As a further description of the above technical solution: calibration rods are arranged in a circumferential array on the refractive lens tube, and a floating frame for supporting the protective lens is provided on the fixed plate through an elastic element. The floating frame has calibration holes corresponding to the calibration rods.

[0008] As a further description of the above technical solution: a transverse groove is opened on the floating frame along the calibration hole.

[0009] As a further description of the above technical solution: the hinge points of the two fixed plates are provided with fastening blocks, and the slide groove is provided with a receiving groove that matches the fastening blocks.

[0010] As a further description of the above technical solution: the fixed block has an air port connected to the air source, the air port faces the floating frame, and the floating frame is provided with guide angles in a circular array.

[0011] As a further description of the above technical solution: it also includes a disassembly cylinder, on which a disassembly hole corresponding to the calibration rod is provided.

[0012] As a further description of the above technical solution: it also includes a cooling unit, which includes interconnected cooling tanks symmetrically opened on the main body block, and each of the two cooling tanks is provided with a liquid blocking plate.

[0013] As a further description of the above technical solution: a connecting channel is provided between the two cooling tanks, and a heat-conducting wall of predetermined thickness exists between the connecting channel and the fixing block.

[0014] As a further description of the above technical solution: the fixed block has an opening hole for accommodating the floating frame, and the opening hole is tangent to the air port.

[0015] As a further description of the above technical solution: a movable groove is provided on the opening hole, the movable groove and the guide angle are corresponding, and a spring is provided between them.

[0016] In the above technical solution, the laser cutting machine for automotive suspension control arms provided by the present invention has the following beneficial effects: When the protective lens facing the refractive lens barrel becomes dirty and needs to be cleaned, the machine is stopped, the two cover plates on the main body block are removed, and then the fixing plate in one of the mounting slots is flipped to a horizontal state and pushed along the main body block to push out the fixing plate that is already in the main body block for replacement. After replacement, the already pushed-out fixing plate is flipped and fixed on the mounting slot to complete the replacement. The replaceable protective lens is installed on the main body block in advance. The replacement process does not require disassembling the main body block. The replacement speed is fast, the operation is simple, the downtime is short, and the speed of production recovery is accelerated. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0019] Figure 2 This is an exploded view of the overall structure provided in an embodiment of the present invention;

[0020] Figure 3 This is an exploded view of the cutting head structure provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the protection component provided in an embodiment of the present invention;

[0022] Figure 5 This is an exploded view of the refractive mirror tube structure provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic cross-sectional view of the overall structure provided in an embodiment of the present invention;

[0024] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0025] Figure 8 This is an exploded view of the protective component structure provided in an embodiment of the present invention;

[0026] Figure 9 for Figure 8 Enlarged view of point B in the middle;

[0027] Figure 10 for Figure 8 Enlarged view of point C in the middle;

[0028] Figure 11 This is a schematic diagram of the cooling unit structure provided in an embodiment of the present invention;

[0029] Figure 12 This is a schematic cross-sectional view of the cooling unit structure provided in an embodiment of the present invention;

[0030] Figure 13 This is a cross-sectional schematic diagram of the fixing block and air inlet structure provided in an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Main body block; 10. Cover plate; 11. Mounting groove; 12. Perforation; 2. Protective component; 21. Fixing plate; 211. Opening hole; 212. Movable groove; 213. Fastening block; 214. Rotating shaft; 22. Floating frame; 221. Calibration hole; 222. Horizontal groove; 23. Protective lens; 231. Limiting ring; 24. Guide angle; 241. Spring; 25. Fixing block; 251. Air inlet; 252. Slide groove; 253. Receiving groove; 3. Cooling unit; 30. Cooling connector; 31. Cooling tank; 310. Connecting channel; 3101. Heat-conducting wall; 311. Liquid blocking plate; 32. Refractor tube; 321. Calibration rod; 33. Disassembly tube; 331. Disassembly hole; 4. Cutting head; 40. Heat insulation plate; 41. Connecting block; 42. Ceramic ring; 43. Fixing ring; 44. Nozzle. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Please see Figure 1-13 This invention provides a technical solution: a laser cutting machine for automotive suspension arms, comprising a main body block 1 and a cutting head 4. The top of the main body block 1 is connected to a laser beam emitting device, and the bottom of the main body block 1 is connected to the cutting head 4. The cutting head 4 includes a connecting block 41, a ceramic ring 42, and a fixing ring 43 connected sequentially from top to bottom. A nozzle 44 is threaded onto the ceramic ring 42. A through hole 12 is provided on the main body block 1, and an internal thread is provided inside the through hole 12. A refraction lens tube 32 is fixedly connected to the internal thread by a rotating thread. The invention also includes a protective component 2, which includes two hinged fixing plates 21 and a fixing block 25 for supporting the sliding of the fixing plates 21. The fixing block 25 is fixedly disposed inside the main body block 1 and has a through groove 252. A protective lens 23 is provided on the fixing plate 21. The protective lens 23 on the fixing plate 21 is a lower protective lens 23, which is closer to the focal point and more prone to heating and contamination during use. Figure 4As shown, the main body block 1 has symmetrically arranged mounting slots 11, which are used to accommodate the fixing plate 21. The mounting slots 11 are covered by a cover plate 10, which is fixed by screws to isolate the flue gas and dust. During use, when focal point shift, slag agglomeration, and slag elongation occur, it is mostly because the protective lens 23 facing the refractive lens tube 32 is dirty and needs to be cleaned. At this time, the machine is stopped, the two cover plates 10 on the main body block 1 are removed, and then the fixing plate 21 in one of the mounting slots 11 is flipped to a horizontal position. The device is pushed along the main block 1 to push out the fixing plate 21 that is already inside the main block 1 for replacement. After replacement, the pushed-out fixing plate 21 is flipped over and fixed onto the mounting slot 11 to complete the replacement. The replaceable protective lens 23 is pre-installed on the main block 1. The replacement process does not require disassembling the main block 1. The replacement speed is fast, the operation is simple, the downtime is short, and the speed of production recovery is accelerated. The protective lens 23 is provided with a limiting ring 231, which is an elastic element to fix the protective lens 23.

[0035] Furthermore, such as Figure 4 As shown, the non-hinged end of the fixing plate 21 is provided with a cover plate, and the cover plate has holes, so that the fixing plate 21 can be fixed to the mounting groove 11 or the fixing block 25 by screws.

[0036] Furthermore, a heat insulation plate 40 is fixedly connected to the connecting block 41 by screws. The heat insulation plate 40 is used to reduce the large amount of heat conducted from the steel plate and the focal point to the main body block 1.

[0037] In another embodiment provided by the present invention, such as Figure 5 and Figure 6 As shown, calibration rods 321 are arranged in a circular array on the refractive lens tube 32. There are four calibration rods 321 in the figure. A floating frame 22 for supporting the protective lens 23 is set on the fixed plate 21 through an elastic element. The elastic element provides the floating frame 22 with a certain degree of freedom. The floating frame 22 has calibration holes 221 corresponding to the calibration rods 321. When the fixed plate 21 slides along the slide groove 252 on the fixed block 25, the calibration rods 321 will first block the floating frame 22. At this time, the floating frame 22 is pushed by the degree of freedom of the floating frame 22. When the fixed plate 21 is pushed into place, the calibration rods 321 will correspond to the calibration holes 221. At this time, the elastic element will pull the floating frame 22 to keep the calibration holes 221 and the calibration rods 321 in contact, compensating for the accuracy loss caused by the two movable fixed plates 21.

[0038] Preferred, such as Figure 10 As shown, the horizontal groove 222 is opened along the calibration hole 221 on the floating frame 22. The horizontal groove 222 reduces the resistance when inserting into the main body block 1. The user can distinguish the positive and negative sides when inserting by the resistance.

[0039] In another embodiment provided by the present invention, such as Figure 9 As shown, the hinge points of the two fixed plates 21 are respectively provided with a fastening block 213 and a rotating shaft 214. The fastening block 213 and the rotating shaft 214 are rotatably connected to hinge the two fixed plates 21 together. When both protective lenses 23 are dirty, the main body block 1 needs to be disassembled and then moved to a cleanroom. The fixed plate 21 with the rotating shaft 214 at the hinge end is flipped to a vertical state. Then, a rubber mallet is used to knock the fastening block 213 and the rotating shaft 214 apart. The slide groove 252 is provided with a receiving groove 253 that matches the fastening block 213. After the fixed plates 21 are installed, the fastening block 213 and the cover plate on one of the fixed plates 21 are sealed to ensure dust and smoke isolation after installation.

[0040] In another embodiment provided by the present invention, such as Figure 8 and Figure 13 As shown, the fixed block 25 has an air port 251 connected to the air source. The air port 251 faces the floating frame 22. The floating frame 22 has guide angles 24 arranged in a circular array. The air source inputs air or nitrogen into the air port 251. Corresponding to the cutting of thin carbon steel, the gas will flow into and out of the cutting head 4 through the annular seam between the floating frame 22 and the fixed plate 21. When flowing in, the multiple guide angles 24 play a blocking role, reducing the diffusion of airflow during output and making the gas output more stable.

[0041] Preferred, such as Figure 8 and Figure 13 As shown, the fixed block 25 has an opening 211 for accommodating the floating frame 22. The opening 211 is tangent to the air port 251. When the gas source is outputting, the gas output from the air port 251 flows along the tangent opening 211, reducing mixing. After flowing along the annular opening 211, it is guided and diverted by the guide angle 24, further stabilizing the gas output.

[0042] Furthermore, an active groove 212 is provided on the opening 211, which corresponds to the guide angle 24. The active groove 212 accommodates the guide angle 24 to move within it. A spring 241 is provided between the floating frame 22 and the active groove 212. The spring 241 is an elastic element used to realize the floating of the floating frame 22.

[0043] In another embodiment of the present invention, a disassembly cylinder 33 is also provided. The disassembly cylinder 33 has a disassembly hole 331 corresponding to the calibration rod 321. When it is necessary to disassemble the main body block 1, the disassembly cylinder 33 can be directly aligned with the calibration rod 321, and the refractive mirror cylinder 32 can be disassembled with the help of the calibration rod 321.

[0044] In another embodiment of the present invention, a cooling unit 3 is further included, comprising cooling tanks 31 symmetrically arranged on the main body block 1. A liquid-blocking plate is screwed onto each cooling tank 31, and a cooling connector 30 is provided on each of the two liquid-blocking plates. One cooling connector 30 is connected to a coolant pump, and the other is connected to a cooling tank. A liquid-blocking plate 311 is provided on each of the two cooling tanks 31, and the liquid-blocking plate and the liquid-blocking plate 311 are fitted together to restrict the flow of liquid along the liquid-blocking plate 311. A connecting channel 310 is provided between the two cooling tanks 31, connecting the two cooling tanks 31. Figure 12 As shown, there is a heat-conducting wall 3101 with a predetermined thickness (1.3mm~2mm) between the connecting channel 310 and the fixing block 25. The heat-conducting wall 3101 conducts the temperature refracted by the protective lens 23. When the protective lens 23 is dirty and the refraction changes, the dirt will block the laser, which will cause the temperature of the protective lens 23 to rise abnormally. This will cause the heat-conducting wall 3101 to transfer the heat flow to the cooling tank 31. The abnormality of the coolant can provide an early warning for the protective lens 23, and minimize the occurrence of the protective lens 23 burning through.

[0045] When it is necessary to replace the protective lens 23, first remove the two cover plates 10 on the main body block 1 and remove the screws on the cover plate of the fixing plate 21. Then, flip the fixing plate 21 in one of the mounting slots 11 to a horizontal state and push it along the main body block 1. Push out the fixing plate 21 that is already in the main body block 1 for replacement. After the fixing plate 21 is pushed into place, the calibration rod 321 will correspond to the calibration hole 221. At this time, the elastic element will pull the floating frame 22 to keep the calibration hole 221 and the calibration rod 321 in contact. Flip the already pushed-out fixing plate 21 and fix it on the mounting slot 11 to complete the replacement. After both protective lenses 23 have been used, disassemble the main body block 1 and then move to the cleanroom. Flip the fixing plate 21 with the hinge end as the pivot 214 to a vertical state. Then use a rubber mallet to knock open the fastening block 213 and the pivot 214 for disassembly and replacement.

[0046] During use, when the protective lens 23 becomes dirty and its refraction changes, the dirt will block the laser and cause the temperature of the protective lens 23 to rise abnormally. This will cause the heat-conducting wall 3101 to transfer the heat flow to the cooling tank 31. The abnormality of the coolant can provide an early warning for the protective lens 23, and the machine can be stopped and the protective lens 23 replaced in time.

[0047] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser cutting machine for automotive suspension control arms, comprising a main body block (1) and a cutting head (4), wherein the main body block (1) has a through hole (12) for supporting a refractive mirror tube (32), characterized in that, It also includes a protective component (2), which includes two hinged fixing plates (21) and a fixing block (25) disposed in the main body block (1). The fixing block (25) has a sliding groove (252), and the fixing plate (21) is provided with a protective lens (23). The main body block (1) has symmetrically provided mounting grooves (11). One of the fixing plates (21) is slidably connected in the sliding groove (252) and calibrated with the refractive lens tube (32). The other fixing plate (21) is flipped and disposed in the mounting groove (11).

2. The laser cutting machine for automotive suspension control arms according to claim 1, characterized in that, The refractive lens tube (32) is provided with calibration rods (321) arranged in a circular array. The fixed plate (21) is provided with a floating frame (22) that carries the protective lens (23) through an elastic element. The floating frame (22) is provided with calibration holes (221) corresponding to the calibration rods (321).

3. The laser cutting machine for automotive suspension control arms according to claim 2, characterized in that, A transverse groove (222) is formed on the floating frame (22) along the calibration hole (221).

4. The laser cutting machine for automotive suspension control arms according to claim 1, characterized in that, The hinge points of the two fixed plates (21) are provided with fastening blocks (213), and the slide groove (252) is provided with a receiving groove (253) that matches the fastening blocks (213).

5. A laser cutting machine for automotive suspension control arms according to claim 2, characterized in that, The fixed block (25) has an air inlet (251) connected to the air source. The air inlet (251) faces the floating frame (22). The floating frame (22) has guide angles (24) arranged in a circular array.

6. A laser cutting machine for automotive suspension control arms according to claim 2, characterized in that, It also includes a disassembly cylinder (33), on which a disassembly hole (331) corresponding to the calibration rod (321) is provided.

7. The laser cutting machine for automotive suspension control arms according to claim 1, characterized in that, It also includes a cooling unit (3), which includes interconnected cooling tanks (31) symmetrically opened on the main body block (1), and each of the two cooling tanks (31) is provided with a liquid blocking plate (311).

8. A laser cutting machine for automotive suspension control arms according to claim 7, characterized in that, A connecting channel (310) is provided between the two cooling tanks (31), and a heat-conducting wall (3101) of predetermined thickness is provided between the connecting channel (310) and the fixing block (25).

9. A laser cutting machine for automotive suspension control arms according to claim 5, characterized in that, The fixed block (25) has an opening (211) for accommodating the floating frame (22), and the opening (211) is tangent to the air port (251).

10. A laser cutting machine for automotive suspension control arms according to claim 9, characterized in that, The opening (211) is provided with a movable groove (212), which corresponds to the guide angle (24), and a spring (241) is provided between them.

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