A laser cutting device for vehicle roof machining

Abstract

The present application relates to the technical fields of laser cutting, and discloses a laser cutting device for processing a large roof of a vehicle, which comprises a mechanical arm and a laser cutting knife, and a supporting module is arranged on the laser cutting knife, wherein the supporting module comprises a fixing unit, a supporting unit and a jacking unit; the fixing unit comprises a fixing seat arranged on the laser cutting knife, and a mounting bracket is arranged on the fixing seat; the supporting unit comprises a bearing box arranged on the mounting bracket, a plurality of jacks are vertically arranged in the bearing box, the jacks are provided with positioning blocks on the lateral surfaces, a discharge port is arranged on the bottom of the front side of the bearing box, a sliding block is elastically and slidably arranged in the bearing box, and a rotating plate is rotatably arranged on the sliding block through an elastic element. The present application has the beneficial effects that: in the process of advancing and cutting of the laser cutting knife, the jacks are continuously inserted into the cutting gap, and the cut part on the inner side of the roof of the vehicle is effectively supported, so that the vertical tensile stress caused by the dead weight of the roof of the vehicle is avoided, and the cutting precision is ensured.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and specifically to a laser cutting device for processing vehicle roofs. Background Technology

[0002] Laser cutting machines are specialized equipment used for cutting and processing materials. Currently, the mainstream types on the market include CO2 laser cutting machines, fiber laser cutting machines, and YAG laser cutting machines. Laser cutting technology is widely used in the processing of both metallic and non-metallic materials, significantly reducing processing time, lowering costs, and improving workpiece quality. Laser cutting utilizes the high power density energy generated by focusing a laser beam. Under computer control, pulses are used to discharge the laser, outputting controlled, repetitive, high-frequency pulsed laser light. This pulsed laser beam is focused onto the surface of the material, instantly melting or vaporizing it at high temperatures, thus achieving the cutting of the material.

[0003] Chinese patent CN119489281A discloses a robotic laser cutting device, including a rotary positioner. A robotic arm is located on each side of the rotary positioner, and a laser cutter is mounted on each robotic arm. A flipping and fixing mechanism is installed on the rotary positioner. The flipping and fixing mechanism includes a fixed frame, on which multiple outer clamping components, inner clamping components, outer limiting components, and inner limiting components are mounted. When processing components with specific shape and size requirements, such as ceiling main bodies, these positioning components work together to fix the workpiece in a precise position. The error range can be controlled within a very small interval, ensuring processing accuracy and improving processing efficiency.

[0004] In vehicle roof structure modification work, high-precision laser cutting equipment is often used to perform large-area roof panel removal. Because vehicle roofs are usually large in area and have a certain weight, during continuous laser cutting, the vertical tensile stress at the end of the cutting path is caused by the weight of the material itself. This dynamic stress causes the laser focus to shift by micrometers, accompanied by material deformation in the heat-affected zone, ultimately resulting in errors in the geometric accuracy and edge quality of the cut surface. Summary of the Invention

[0005] This invention provides a laser cutting device for processing vehicle roofs, aiming to solve the technical problem in related technologies where, due to the large area and weight of vehicle roofs, vertical tensile stress is induced at the end of the cutting path due to the material's own weight during continuous laser cutting. This dynamic stress causes micron-level shift of the laser focus, accompanied by material deformation in the heat-affected zone, ultimately resulting in errors in the geometric accuracy and edge quality of the cut surface.

[0006] A laser cutting device for processing vehicle roofs according to the present invention includes: a robotic arm and a laser cutting blade. The laser cutting blade is equipped with a support module, which includes a fixing unit, a supporting unit, and a lifting unit. The fixing unit includes a fixing seat on the laser cutting blade, and a mounting bracket is provided on the fixing seat. The supporting unit includes a carrier box on the mounting bracket, with multiple top blocks vertically arranged inside the carrier box. Each top block has a positioning block on its side. A discharge port is provided at the bottom front side of the carrier box. Sliding blocks are elastically slidably fitted front and rear inside the carrier box. A rotating plate is rotatably fitted onto the sliding blocks via an elastic element. The block is also equipped with a limiting block to restrict the rotation of the rotating plate to the rear. The lowest positioning block is located on the movement path of the rotating plate. A drive shaft rotates on the side of the bearing box. A spool slides axially on the drive shaft. The drive shaft is equipped with a plug that can engage with the spool. The spool is equipped with a first pull line connected to the sliding block. The bearing box is also equipped with a pusher frame connected to the spool in an elastic damping sliding fit. The lifting unit includes a bearing frame located at the lower end of the mounting frame. A pusher slides vertically on the bearing frame. A second pull line connected to the pusher is provided on the sliding block. When the bearing frame moves forward, it can pull the pusher to rise.

[0007] Beneficial effects: The drive motor drives the drive shaft to rotate, which in turn drives the reel to rotate. The first pull wire pulls the sliding block to slide backward. When the rotating plate on the sliding block encounters the positioning block on the bottommost top block, the rotating plate is forced to rotate forward to avoid the positioning block, thus ensuring that the sliding block smoothly passes over the positioning block. Then, the torsion spring on the rotating plate releases its force, causing the rotating plate to return to a vertical state. The limiting block can limit the rotating plate, keeping it vertical. As the sliding block continues to move backward, it gradually comes into contact with the push frame and pushes the push frame backward. The push frame pushes the reel backward, causing the reel to slide axially along the drive shaft and disengage from the insert block. The force of the first spring gradually releases, causing the sliding block to begin sliding forward and pushing the bottommost top block forward until the top block is pushed out from the discharge port on the front side of the bearing cavity. As the sliding block moves forward, it pulls the lifting frame upward along the support frame. This lifting frame, in turn, causes the rollers to lift the cut-off portion of the car roof, allowing the inclined surface of the top block to insert and support the cut-off section. During the laser cutting process, the top block is continuously inserted into the cutting gap, effectively supporting the cut-off portion of the car roof and preventing vertical tensile stress caused by the roof's weight, thus ensuring cutting precision.

[0008] Preferably, the front side of the top block is an inclined surface, and the inclined surface gradually slopes upward from front to back, and the top block is also provided with a receiving groove.

[0009] Its effect is that the edge of the cut-off part of the car roof will enter the receiving groove along the inclined surface of the front side of the roof block. The receiving groove can limit the cut-off part of the car roof, improve the stability of the support for the cut-off part, and prevent its edge from lifting up.

[0010] Preferably, a partition is vertically arranged inside the carrier box, which divides the inside of the carrier box into a driving cavity and a carrier cavity. The partition is provided with a positioning hole that runs through the left and right sides, and the length of the positioning hole extends in the vertical direction. An avoidance elongated hole communicating with the positioning hole is also provided on the side wall of the driving cavity.

[0011] Its effect is that when installing the top block, the top blocks are placed into the bearing cavity in sequence, the positioning block on the top block is inserted into the positioning hole, and one end of the positioning block is inserted into the drive cavity. The positioning block and the positioning hole can position the top block in the vertical direction, so that multiple top blocks are stacked neatly.

[0012] Preferably, the rotating plate is rotatably coupled to the sliding block via a rotating shaft, and the elastic element is a torsion spring disposed on the rotating shaft, with one end of the torsion spring connected to the rotating plate and the other end connected to the sliding block.

[0013] Its effect is as follows: when the rotating plate on the sliding block encounters the positioning block on the bottommost top block, the rotating plate is forced to rotate forward to avoid the positioning block, thereby ensuring that the sliding block passes the positioning block smoothly. Then the torsion spring on the rotating plate is released, so that the rotating plate returns to the vertical state. The limiting block can limit the rotating plate and keep it in a vertical state.

[0014] Preferably, a mounting plate is fixedly provided on the side of the carrier box, a drive motor is mounted on the mounting plate, the drive shaft rotates on the mounting plate and is connected to the output end of the drive motor, and a slot is provided on the inner side of the reel, and the slot is adapted to the insert block.

[0015] Preferably, the pusher frame has a pusher portion with a U-shaped structure, and the side plate on the spool extends into the inner groove of the pusher portion.

[0016] Its effect is that when the jacking frame is forced to retreat, it can drive the sheave to move to the rear; when the jacking frame moves forward to reset, it can drive the sheave to move forward.

[0017] Preferably, the pushing component includes a lifting frame that is vertically slidably fitted on the support frame, with rollers rotatably fitted on the lifting frame, and a second pull line connected to the lifting frame.

[0018] Preferably, the mounting bracket is rotatably fitted onto the fixed base.

[0019] Preferably, the lower end of the mounting bracket is fixedly connected to a connector, which is a columnar structure or a sheet structure.

[0020] Preferably, a third guide post is fixedly installed on the carrier box, and a second guide post is fixedly installed on the mounting frame. After the second pull wire passes through the third guide post, it goes around the second guide post again and is fixedly connected to the lifting frame.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0022] The drive motor drives the drive shaft to rotate, which in turn drives the reel to rotate. The first pull wire pulls the sliding block to slide backward. When the rotating plate on the sliding block encounters the positioning block on the bottommost top block, the rotating plate is forced to rotate forward to avoid the positioning block, thus ensuring that the sliding block smoothly passes over the positioning block. Then, the torsion spring on the rotating plate releases its force, causing the rotating plate to return to a vertical state. The limiting block can limit the rotating plate, keeping it in a vertical state. As the sliding block continues to move backward, it gradually comes into contact with the push frame and pushes the push frame backward. The push frame pushes the reel backward, causing the reel to slide axially along the drive shaft and disengage from the insert block. The force of the first spring gradually releases, causing the sliding block to begin sliding forward and pushing the bottommost top block forward until the top block is pushed out from the discharge port on the front side of the bearing cavity. As the sliding block moves forward, it pulls the lifting frame upward along the support frame. This lifting frame, in turn, causes the rollers to lift the cut-off portion of the car roof, allowing the inclined surface of the top block to insert and support the cut-off section. During the laser cutting process, the top block is continuously inserted into the cutting gap, effectively supporting the cut-off portion of the car roof and preventing vertical tensile stress caused by the roof's weight, thus ensuring cutting precision. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the fixing base of the present invention.

[0025] Figure 3 This is an exploded view of the fixing base and the carrier box of the present invention.

[0026] Figure 4 This is a schematic diagram of the support frame of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the carrier box of the present invention.

[0028] Figure 6 This is an exploded view of the drive shaft and reel of the present invention.

[0029] Figure 7 This is a schematic diagram of the internal structure of the drive cavity of the present invention.

[0030] Figure 8 This is a schematic diagram of the internal structure of the bearing cavity of the present invention.

[0031] Figure 9 This is a schematic diagram of the top block of the present invention.

[0032] Figure 10 This is a schematic diagram of the pusher frame of the present invention.

[0033] Figure 11 This is a schematic diagram of the sliding block of the present invention.

[0034] Figure label:

[0035] 10. Robotic arm; 11. Laser cutting blade; 12. Car roof; 20. Mounting base; 21. Mounting bracket; 22. Connector; 30. Carrier box; 31. Cover plate; 32. Carrier cavity; 33. Drive cavity; 34. Discharge port; 35. Positioning hole; 36. Clearance elongated hole; 37. Partition plate; 40. Top block; 41. Inclined surface; 42. Receiving groove; 43. Positioning block; 50. Sliding block; 51. Sliding rod; 52. 53. First spring; 54. Turning plate; 65. Limiting block; 66. Mounting plate; 67. Drive motor; 68. Drive shaft; 69. Insert block; 60. Threaded wheel; 61. First pull line; 62. First guide post; 70. Pushing frame; 71. Second spring; 72. Pushing part; 73. Guide part; 80. Bearing frame; 81. Lifting frame; 82. Roller; 83. Second guide post; 84. Third guide post; 85. Second pull line. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] like Figures 1 to 11 As shown, this invention provides a specific embodiment of a laser cutting device for processing vehicle roofs. For ease of understanding, the car roof 12 is used as an example of the application scenario of this invention (e.g., Figure 2 As shown, this laser cutting device for processing vehicle roofs includes a robotic arm 10, a laser cutting blade 11, and a support module. The laser cutting blade 11 is fixedly installed at the moving end of the robotic arm 10, and the robotic arm 10 can drive the laser cutting blade 11 to move and perform cutting operations on the car roof 12.

[0038] The support module includes a fixing unit, a support unit, and a lifting unit. Both the support unit and the lifting unit are mounted on the fixing unit and are mounted on the laser cutting blade 11 through the fixing unit. The lifting unit is used to lift the part of the car roof 12 that has been cut off from the bottom to the top, and the support unit is used to support and fix the lifted part of the car roof 12, thereby avoiding vertical tensile stress caused by the weight of the car roof 12.

[0039] like Figure 2 and Figure 3 As shown, the fixing unit includes a fixing base 20, a mounting bracket 21, and a connector 22. The inner side of the fixing base 20 is a hollow structure that runs vertically through the laser cutting blade 11, and the shape of the fixing base 20 is adapted to fit the laser cutting blade 11, so that the laser cutting blade 11 can pass through the fixing base 20, allowing the fixing base 20 to be sleeved on the outside of the laser cutting blade 11 and fixedly installed on the laser cutting blade 11. In this embodiment, the fixing base 20 can be fixed to the outside of the laser cutting blade 11 by bolts or clips.

[0040] A mounting bracket 21 is rotatably mounted on the fixed base 20. In this embodiment, the mounting bracket 21 rotates along an axis extending in the left-right direction, thereby facilitating the rotation of the laser cutting blade 11 at a certain angle for cutting as needed. The mounting bracket 21 is a long strip structure, and its length extends in the vertical direction. A connector 22 is fixedly connected to the lower end of the mounting bracket 21. The connector 22 needs to enter the cutting gap, so it is required that the connector 22 is thin enough to pass through the cutting gap of the car roof 12. The connector 22 can be a columnar structure or a sheet structure.

[0041] like Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 as well as Figure 11 As shown, the support unit includes a bearing component and a pushing component. The bearing component includes a bearing box 30, a cover plate 31, a partition plate 37, a top block 40, and a positioning block 43.

[0042] The carrier box 30 is fixedly mounted on the mounting bracket 21. The carrier box 30 has a square structure and its length extends along the front-to-back direction. The upper end of the carrier box 30 has an open structure, and a cover plate 31 is rotatably mounted on the top of the carrier box 30. The cover plate 31 can rotate to allow the carrier box 30 to have two states: open and closed.

[0043] A vertical partition 37 is vertically arranged inside the carrier box 30, dividing the interior of the carrier box 30 into two chambers, a driving chamber 33 and a carrier chamber 32. A discharge port 34 is located near the bottom of the front side of the carrier chamber 32. A positioning hole 35 (e.g., through-hole) is provided on the partition 37. Figure 7 The positioning hole 35 is a rectangular structure, and the length of the positioning hole 35 extends in the vertical direction. The positioning hole 35 connects the driving cavity 33 and the bearing cavity 32.

[0044] like Figure 7 As shown, an obstacle avoidance elongated hole 36 is also provided on the side wall of the drive cavity 33. The obstacle avoidance elongated hole 36 has an L-shaped structure, that is, the obstacle avoidance elongated hole 36 includes a horizontal section and a corner section. The horizontal section is provided on the partition plate 37 and extends through the partition plate 37 from left to right. The horizontal section is located in front of the positioning hole 35 and communicates with the positioning hole 35. The corner section is provided on the front side wall of the drive cavity 33.

[0045] like Figure 8 and Figure 9 As shown, a plurality of top blocks 40 are disposed within the bearing cavity 32, and the top blocks 40 are vertically stacked. The front side of each top block 40 is an inclined surface 41, which gradually slopes upward from front to back. The inclined surface 41 facilitates the insertion of the top block 40 into the portion of the car roof 12 that is lifted. Each top block 40 is also provided with a receiving groove 42, which has a front opening, i.e., its opening is on the inclined surface 41. A positioning block 43 is disposed on the left side of the top block 40, and the positioning block 43 is adapted to the positioning hole 35.

[0046] When installing the top block 40, open the cover plate 31 and place the top blocks 40 sequentially into the bearing cavity 32. The positioning block 43 on the top block 40 is inserted into the positioning hole 35, that is, one end of the positioning block 43 passes through the drive cavity 33. The positioning block 43 and the positioning hole 35 can position the top block 40 in the vertical direction, so that multiple top blocks 40 are neatly stacked. The fact that one end of the positioning block 43 passes through the drive cavity 33 facilitates the pushing assembly to push the top block 40. The method of pushing the top block 40 will be explained in detail later.

[0047] The positioning block 43 on the bottommost top block 40 corresponds to the clearance elongated hole 36. When the pushing assembly pushes the bottommost top block 40 forward, the positioning block 43 on the bottommost top block 40 enters the clearance elongated hole 36. Then, the top block 40 is pushed out from the discharge port 34 on the front side of the bearing cavity 32. Then, the top block 40 above falls down to fill the empty space below, and the work continues. The inclined surface 41 on the front side of the pushed-out top block 40 is inserted into the part of the car roof 12 that is lifted by the lifting unit. The part of the car roof 12 that is lifted is the part that will be cut off after being cut by the laser cutting blade 11. In this embodiment, it is the part located inside the cutting gap. At this time, the inner part and the outer part will form a height difference. The inner part will be slightly higher than the outer part, which makes it easier for the inclined surface 41 on the front side of the top block 40 to be inserted.

[0048] like Figure 5 , Figure 6 , Figure 7 , Figure 10 as well as Figure 11 As shown, the jacking assembly includes a sliding block 50, a sliding rod 51, a first spring 52, a rotating plate 53, a limiting block 54, a mounting plate 60, a drive motor 61, a drive shaft 62, an insert block 63, a threaded wheel 64, a first pull wire 65, a first guide post 66, a jacking frame 70, and a second spring 71.

[0049] A sliding block 50 is horizontally slidably mounted on the bottom of the driving cavity 33. In this embodiment, the sliding block 50 is a plate-shaped structure and is vertically arranged. A sliding rod 51 is fixedly mounted on the rear side of the sliding block 50. The axis of the sliding rod 51 is horizontally arranged front to back and passes through the rear sidewall of the driving cavity 33. The sliding rod 51 slides in cooperation with the rear sidewall of the driving cavity 33, thereby ensuring that the sliding block 50 can slide stably back and forth. A first spring 52 is sleeved on the outer side of the sliding rod 51. One end of the first spring 52 is connected to the sliding block 50, and the other end of the first spring 52 abuts against the rear sidewall of the driving cavity 33, so that the first spring 52 can provide elastic force for the sliding block 50 to return to its original position. It should be noted that in the initial state, the sliding block 50 is located near the front side of the driving cavity 33.

[0050] In other embodiments, the slide rod 51 can also pass through the sliding block 50 from front to back, and the slide rod 51 is horizontally fixedly installed in the drive cavity 33. That is, the front and rear ends of the slide rod 51 are respectively fixedly connected to the front and rear inner walls of the drive cavity 33, which can also ensure the stability of the sliding block 50 sliding back and forth.

[0051] A rotating plate 53 is rotatably mounted on the upper surface of the sliding block 50 via a rotating shaft. The rotating plate 53 can rotate along an axis extending in the left and right directions. A torsion spring (not shown in the figure) is provided on the rotating shaft. That is, the torsion spring is sleeved on the outside of the rotating shaft. One end of the torsion spring is connected to the rotating plate 53, and the other end of the torsion spring is connected to the sliding block 50. The torsion spring can provide elastic force for the reset of the rotating plate 53.

[0052] A limiting block 54 is provided on the sliding block 50. The limiting block 54 is located on the rear side of the rotating plate 53. In this embodiment, the limiting block 54 is a plate-shaped structure and is arranged vertically. The limiting block 54 can limit the rotation angle of the rotating plate 53. That is, under the action of the torsion spring and the limiting block 54, the rotating plate 53 will remain in a vertical state and the rotating plate 53 cannot continue to rotate to the rear. However, when the rotating plate 53 is subjected to a forward thrust, the rotating plate 53 can still rotate to the front.

[0053] like Figure 5 , Figure 6 as well as Figure 7 As shown, a mounting plate 60 is fixedly installed on the left side of the carrier box 30. The mounting plate 60 has a T-shaped structure. A drive motor 61 is fixedly installed on the vertical section of the mounting plate 60. The axis of the output end of the drive motor 61 extends in the front-back direction. A drive shaft 62 is fixedly installed on the output end of the drive motor 61. The drive shaft 62 is rotatably engaged with the vertical section of the mounting plate 60, and the drive shaft 62 is coaxially arranged with the output end of the drive motor 61. That is, the drive motor 61 can drive the drive shaft 62 to rotate.

[0054] A plug 63 is provided on the end of the drive shaft 62 away from the drive motor 61. The plug 63 is a rectangular strip structure, and the length direction of the plug 63 is parallel to the axis of the drive shaft 62.

[0055] A spool 64 is slidably fitted onto the drive shaft 62 along its axial direction. A slot is provided inside the spool 64, and the shape and size of the slot are adapted to the insertion block 63. When the insertion block 63 is inserted into the slot on the spool 64, the drive shaft 62 can drive the spool 64 to rotate. When the spool 64 slides along the drive shaft 62 and disengages from the insertion block 63, the drive shaft 62 can no longer drive the spool 64 to rotate.

[0056] A first pull wire 65 is wound on the reel 64. A first guide post 66 is fixedly installed at the bottom of the drive cavity 33. The axis of the first guide post 66 is arranged vertically. A through hole is provided on the side wall of the carrier box 30. The end of the first pull wire 65 away from the reel 64 passes through the through hole on the carrier box 30 and enters the drive cavity 33. After being turned by the first guide post 66, it is fixedly connected to the sliding block 50.

[0057] like Figure 5 , Figure 7 as well as Figure 8As shown, a rectangular mounting hole is provided on the left side of the carrier box 30. The length of the mounting hole extends along the front-to-back direction and penetrates the side wall of the carrier box 30, communicating with the interior of the drive cavity 33. A pusher frame 70 is slidably mounted with front-to-back damping within the mounting hole. A second spring 71 is provided on the pusher frame 70. One end of the second spring 71 is connected to the pusher frame 70, and the other end is connected to the carrier box 30, so that the second spring 71 can provide elastic force for the pusher frame 70 to return to its original position. It should be noted that the pusher frame 70 is located behind the positioning hole 35.

[0058] The pusher frame 70 has a pusher part 72 and a guide part 73. The pusher part 72 has a U-shaped structure and is located on the left side of the carrier box 30. The spool 64 has two side plates and a winding post. The side plates of the spool 64 extend into the inner groove of the pusher part 72. So when the pusher frame 70 drives the pusher part 72 to move backward, the pusher part 72 can push the spool 64 backward, causing the spool 64 to slide axially along the drive shaft 62 and disengage from the insert block 63. When the second spring 71 drives the pusher frame 70 to reset, the pusher part 72 can push the spool 64 forward, causing the insert block 63 to be inserted into the slot on the spool 64, and the drive shaft 62 can drive the spool 64 to rotate together.

[0059] The guide portion 73 extends along the front-to-back direction in the longitudinal direction and abuts against the side wall of the sliding block 50, thereby stabilizing the movement of the sliding block 50.

[0060] When the top block 40 needs to be inserted into the part of the car roof 12 that is lifted by the lifting unit, the drive motor 61 works, the drive motor 61 drives the drive shaft 62 to rotate, the drive shaft 62 drives the reel 64 to rotate together, the reel 64 begins to wind up the first pull cable 65, the first pull cable 65 pulls the sliding block 50 to slide to the rear, the first spring 52 is gradually compressed, when the rotating plate 53 on the sliding block 50 encounters the positioning block 43 on the bottommost top block 40, the rotating plate 53 is forced to rotate to the front to avoid the positioning block 43, thereby ensuring that the sliding block 50 smoothly passes the positioning block 43, and then the torsion spring on the rotating plate 53 is released, so that the rotating plate 53 returns to the vertical state. The limiting block 54 can limit the rotating plate 53, so that the rotating plate 53 remains in a vertical state. As the sliding block 50 continues to move rearward, it gradually comes into contact with the pusher frame 70 and pushes the pusher frame 70 rearward. The pusher frame 70 begins to slide rearward, and the pusher part 72 can push the wire wheel 64 rearward, causing the wire wheel 64 to slide axially along the drive shaft 62 and disengage from the insert block 63. At this time, the drive shaft 62 cannot drive the wire wheel 64 to rotate, and the wire wheel 64 can rotate around the axis of the drive shaft 62. Therefore, the first pull wire 65 no longer exerts tension on the sliding block 50, and the elastic force of the first spring 52 is gradually released, causing the sliding block 50 to begin to slide forward. During the forward movement of the sliding block 50, the vertical rotating plate 53 gradually comes into contact with the positioning block 43 on the lowest top block 40, and the sliding block 50 begins to push the lowest top block 40 forward until the top block 40 is pushed out from the discharge port 34 on the front side of the bearing cavity 32. Then the top block 40 falls down to fill the empty space below, continuing the operation. The inclined surface 41 on the front of the pushed-out top block 40 inserts into the part of the car roof 12 that has been lifted by the lifting unit. The edge of the cut-off part of the car roof 12 will enter the receiving groove 42 along the inclined surface 41 on the front of the top block 40. The receiving groove 42 can limit the cut-off part of the car roof 12, improve the stability of the support for the cut-off part, and prevent its edge from lifting.

[0061] It is particularly important to emphasize that the pusher 70 is damped and slidably fitted into the mounting elongated hole on the carrier box 30. Therefore, the second spring 71 can drive the pusher 70 to gradually and slowly slide forward and reset, ultimately causing the pusher 72 to push the wire wheel 64 forward, so that the insert block 63 is inserted into the slot on the wire wheel 64, and the drive shaft 62 can drive the wire wheel 64 to rotate together. The purpose is to ensure that during the process of the wire wheel 64 slowly moving forward and resetting, the first spring 52 can drive the sliding block 50 to move forward and reset. At this time, the first pull wire 65 will be pulled out from the wire wheel 64.

[0062] like Figure 3 , Figure 4 as well as Figure 5As shown, the jacking assembly includes a support frame 80, a lifting frame 81, rollers 82, a second guide column 83, a third guide column 84, and a second pull line 85.

[0063] The support frame 80 is detachably installed at the lower end of the connector 22. The support frame 80 is located at the bottom of the car roof 12. A lifting frame 81 is vertically slidably fitted on the support frame 80. A roller 82 is rotatably installed on the lifting frame 81. The roller 82 abuts against the bottom of the car roof 12.

[0064] A second pull wire 85 is fixedly connected to the sliding block 50. A third guide post 84 is fixedly installed on the inner wall of the drive cavity 33. A second guide post 83 is fixedly installed on the mounting frame 21. The end of the second pull wire 85 away from the sliding block 50 goes upward, passes through the third guide post 84, then goes around the second guide post 83 again, and finally passes through the support frame 80 and is fixedly connected to the lifting frame 81.

[0065] As the sliding block 50 moves forward, it pulls the lifting frame 81 upward along the support frame 80. The lifting frame 81 then drives the roller 82 to lift the cut-off part of the car roof 12, so that the inclined surface 41 on the front side of the top block 40 can be inserted, thereby supporting the cut-off part of the car roof 12 and preventing vertical tensile stress caused by the weight of the car roof 12.

[0066] It is particularly important to note that as the laser cutting blade 11 moves, it can move a certain distance and then insert a top block 40 into the part of the car roof 12 that has been cut off, thus completing the cutting of one car roof 12. Four to six blocks can be inserted.

[0067] The working principle of this invention is as follows: First, the laser cutting blade 11 cuts a certain distance on the car roof 12. Then, the fixing seat 20 is fixedly installed on the laser cutting blade 11, so that the connecting piece 22 is inserted into the cutting gap. Then, the carrier frame 80 is fixedly installed on the lower end of the connecting piece 22, thus completing the installation of the device. Then, the robotic arm 10 continues to drive the laser cutting blade 11 to perform cutting work. When the top block 40 needs to be inserted into the part of the car roof 12 that is lifted by the lifting unit, the drive motor 61 works, the drive motor 61 drives the drive shaft 62 to rotate, the drive shaft 62 drives the reel 64 to rotate together, the reel 64 begins to wind up the first pull cable 65, the first pull cable 65 pulls the sliding block 50 to slide to the rear, the first spring 52 is gradually compressed, when the rotating plate 53 on the sliding block 50 encounters the positioning block 43 on the bottommost top block 40, the rotating plate 53 is forced to rotate to the front to avoid the positioning block 43, thereby ensuring that the sliding block 50 smoothly passes the positioning block 43, and then the torsion spring on the rotating plate 53 is released, so that the rotating plate 53 returns to the vertical state. The limiting block 54 can limit the rotating plate 53, so that the rotating plate 53 remains in a vertical state. As the sliding block 50 continues to move rearward, it gradually comes into contact with the pusher frame 70 and pushes the pusher frame 70 rearward. The pusher frame 70 begins to slide rearward, and the pusher part 72 can push the wire wheel 64 rearward, causing the wire wheel 64 to slide axially along the drive shaft 62 and disengage from the insert block 63. At this time, the drive shaft 62 cannot drive the wire wheel 64 to rotate, and the wire wheel 64 can rotate around the axis of the drive shaft 62. Therefore, the first pull wire 65 no longer exerts tension on the sliding block 50, and the elastic force of the first spring 52 is gradually released, causing the sliding block 50 to begin to slide forward. During the forward movement of the sliding block 50, the vertical rotating plate 53 gradually comes into contact with the positioning block 43 on the lowest top block 40, and the sliding block 50 begins to push the lowest top block 40 forward until the top block 40 is pushed out from the discharge port 34 on the front side of the bearing cavity 32. Then, the top block 40 falls down to fill the empty space below, continuing the operation. As the sliding block 50 moves forward, it pulls the lifting frame 81 upward along the support frame 80. The lifting frame 81 then drives the rollers 82 to lift the cut-off portion of the car roof 12. The inclined surface 41 on the front of the pushed-out top block 40 inserts into the portion of the car roof 12 lifted by the lifting unit. The edge of the cut-off portion of the car roof 12 enters the receiving groove 42 along the inclined surface 41 on the front of the top block 40. The receiving groove 42 limits the position of the cut-off portion of the car roof 12, improving the stability of the support and preventing its edge from lifting.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A laser cutting device for processing vehicle roofs, comprising: A robotic arm and a laser cutting blade, characterized in that the laser cutting blade is provided with a support module, the support module including a fixing unit, a supporting unit and a lifting unit; The fixing unit includes a fixing seat on the laser cutting blade, and a mounting bracket is provided on the fixing seat; The support unit includes a carrier box mounted on a mounting frame. Multiple top blocks are vertically arranged inside the carrier box. Each top block has a positioning block on its side. A discharge port is located at the bottom front of the carrier box. Sliding blocks are elastically slidably fitted front and rear inside the carrier box. A rotating plate is rotatably fitted onto each sliding block via an elastic element. A limiting block restricts the rotating plate's rearward rotation on each sliding block. The lowest positioning block is located on the rotating plate's movement path. A drive shaft rotates on the side of the carrier box. A sheave slides axially on the drive shaft. An insert block engages with the sheave on the drive shaft. A first pull line connects to the sliding block on the sheave. A pusher frame connected to the sheave is elastically damped and slidably fitted on the carrier box. The front side of each top block is an inclined surface, gradually sloping upwards from front to back. A receiving groove is also provided on each top block. The lifting unit includes a support frame located at the lower end of the mounting frame, a jacking component that slides vertically on the support frame, and a second pull line connected to the jacking component on the sliding block. When the support frame moves forward, it can pull the jacking component to rise.

2. The laser cutting device for processing vehicle roofs according to claim 1, characterized in that, The carrier box has a vertically arranged partition that divides the interior of the carrier box into a driving cavity and a carrier cavity. The partition has a positioning hole that runs through the left and right sides and extends vertically. The side wall of the driving cavity also has an avoidance elongated hole that communicates with the positioning hole.

3. The laser cutting device for processing vehicle roofs according to claim 1, characterized in that, The rotating plate is rotatably coupled to the sliding block via a rotating shaft, and the elastic element is a torsion spring set on the rotating shaft, with one end of the torsion spring connected to the rotating plate and the other end connected to the sliding block.

4. The laser cutting device for processing vehicle roofs according to claim 1, characterized in that, A mounting plate is fixed to the side of the carrier box, and a drive motor is mounted on the mounting plate. The drive shaft rotates on the mounting plate and is connected to the output end of the drive motor. A slot is provided inside the reel, and the slot is adapted to the insert block.

5. A laser cutting device for processing vehicle roofs according to any one of claims 1-4, characterized in that, The pusher frame has a pusher section, which has a U-shaped structure, and the side plate on the spool extends into the inner groove of the pusher section.

6. The laser cutting device for processing vehicle roofs according to claim 5, characterized in that, The jacking component includes a lifting frame that is vertically slidably fitted on the support frame, with rollers rotatably fitted on the lifting frame, and a second pull line connected to the lifting frame.

7. The laser cutting device for processing vehicle roofs according to claim 6, characterized in that, The mounting bracket is rotatably fitted onto the fixed base.

8. The laser cutting device for processing vehicle roofs according to claim 7, characterized in that, The lower end of the mounting bracket is fixedly connected to a connector, which is a columnar or sheet-like structure.

9. A laser cutting device for processing vehicle roofs according to claim 6, characterized in that, A third guide post is fixedly installed on the carrier box, and a second guide post is fixedly installed on the mounting frame. After the second pull wire passes through the third guide post, it goes around the second guide post again and is fixedly connected to the lifting frame.

Images