A peripheral laser cutting trimming device for an automobile lampshade

Abstract

This invention belongs to the field of laser cutting technology for automotive lamp covers, specifically a laser cutting and trimming device for the outer periphery of an automotive lamp cover, including a laser trimming machine base; a first guide rail frame is fixedly connected to the laser trimming machine base; an electric slide is slidably connected to the first guide rail frame; the lamp cover is fixed by four limiting pressure plates pressing down synchronously. When the laser cutting head cuts the flash and sprue material along the outer periphery, if it is about to reach a certain locking point, the corresponding connecting component will first release the locking of the pressure plate at that point, and then the second electric slider will drive the central slide plate and pressure plate away, while the other pressure plates remain locked. After cutting the position, the locking is reset, and all locking positions are completed in sequence. This multi-point pressing and single-point clearance fixing method replaces the situation where the traditional locking structure blocks the cutting path, improving the cutting integrity and processing quality. At the same time, the connecting component can slide on the central slide plate, so that the limiting pressure plates can adapt to different lamp cover shapes, replacing the traditional single-specification locking structure.

Description

Technical Field

[0001] This invention belongs to the field of automotive lamp cover laser cutting technology, specifically a device for laser cutting and trimming the outer periphery of an automotive lamp cover. Background Technology

[0002] Automotive headlight covers are transparent protective components in the headlight assembly. They are usually made of engineering plastics such as polycarbonate or acrylic. They have optical transparency to ensure uniform light transmission for lighting and signaling functions, and also have excellent impact resistance, weather resistance and UV aging resistance, and can withstand impacts from gravel, drastic temperature changes and long-term exposure to sun and rain.

[0003] The manufacturing process of automotive headlight covers mainly includes three stages: injection molding, surface hardening, and laser cutting and finishing. First, molten plastic granules are injection molded into a blank with flash in a single step in the mold. Then, the blank needs to undergo a spraying or dip coating process to obtain a hardened coating to improve wear resistance and weather resistance. Finally, the key finishing stage is the peripheral laser cutting and finishing process, which uses a laser beam to cut off excess flash and sprue material along the contour line designed for the headlight cover, ensuring that the edges of the headlight cover are clean and perfectly match the headlight housing.

[0004] Traditional automotive lamp cover laser cutting and trimming devices mostly adopt a single-station gantry structure. During operation, the operator needs to manually place and lock the injection-molded lamp cover blank onto the corresponding model of the contour support seat. Then, the laser head is controlled to cut along the outer periphery of the automotive lamp cover through a pre-programmed path to remove excess flash and sprue material.

[0005] In the manufacturing process of automotive lighting, the shape of the outer periphery of the lamp cover needs to be trimmed by laser cutting. Traditional laser cutting trimming equipment usually fixes the lamp cover to a contour support. In this equipment, the lamp cover is fixed to the support by a uniform locking structure. This locking structure can ensure that the lamp cover remains stable during the cutting process. However, when fixing the lamp cover, this uniform locking method will fix the lamp cover in a specific position on the support, which can easily affect the laser cutting path. The locking structure will occupy some areas, making it difficult for the laser cutting equipment to cut the excess material in these areas smoothly, thus affecting the overall processing accuracy and quality of the lamp cover.

[0006] Therefore, the present invention provides a laser cutting and trimming device for the outer periphery of an automotive lamp cover. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: A laser cutting and trimming device for the outer periphery of an automotive lamp cover, comprising a laser trimming machine base; a first guide rail frame fixedly connected to the laser trimming machine base; an electric slide frame slidably connected to the first guide rail frame; a first electric cylinder fixedly connected to the electric slide frame; a laser cutting head fixedly connected to the output end of the first electric cylinder; a fixed base fixedly connected to the laser trimming machine base and below the laser cutting head; a limiting seat slidably connected to the fixed base via a first electric slider; a central sliding plate slidably connected to both sides of the center of the limiting seat via second electric sliders; a limiting pressure plate provided on the central sliding plate; and a connecting component provided on the central sliding plate, the connecting component being used to drive the limiting pressure plate to press against the automotive lamp cover.

[0009] Preferably, the connecting assembly includes a sliding seat, a second electric cylinder, a first fixed cylinder, a first sliding rod, and a rotating frame; multiple sliding seats are slidably connected to the central sliding plate via a third electric slider; the second electric cylinder is fixedly connected to the sliding seat; the first fixed cylinder is fixedly connected to the output end of the second electric cylinder; the first sliding rod is slidably connected to the first fixed cylinder via a first elastic element; the rotating frame is rotatably connected to the first sliding rod via a first torsion spring, and a limiting pressure plate is fixedly connected to one end of the rotating frame.

[0010] Preferably, both sides of the bottom end of the limiting pressure plate are rotatably connected to the transfer rollers via a second torsion spring; a fixed pressure plate is fixedly connected to the transfer roller, the cross-sectional shape of the fixed pressure plate is curved, and the two fixed pressure plates are set to face each other; both sides of the limiting seat and the central sliding plate are slidably connected to the side sliding plates via a second electric slider.

[0011] Preferably, the limiting seat is slidably connected to a plurality of inner support plates, and two inner support plates are configured as a group; the inner support plates are provided with a plurality of locking grooves; the limiting seat is slidably connected to a locking plate, and the shape of the locking plate corresponds to that of the locking groove; the limiting seat and the locking plate are threadedly connected to a fixing bolt.

[0012] Preferably, a top support plate is slidably connected to the inner support plate; a second elastic element is fixedly connected between the top inner wall of the inner support plate and one end of the top support plate; and an arc surface is provided at the top end of the top support plate.

[0013] Preferably, a rotating groove is provided at the center of the top support plate; a rotating rod is rotatably connected to the rotating groove of the top support plate through a No. 3 torsion spring; an anchor plate is fixedly connected to the rotating rod, and the anchor plate is shaped like an anchor; an elastic pad is fixedly connected to the anchor plate.

[0014] Preferably, a first collection box is fixedly connected to one side of the central sliding plate; a second collection box is fixedly connected to one side of the side sliding plate; and both the first and second collection boxes have an arc-shaped surface on the side near the limiting seat.

[0015] Preferably, a flow guide box is fixedly connected to one side of the laser cutting head; an electric multi-way valve is fixedly connected to one side of the laser cutting head and below the flow guide box, and a short pipe is fixedly connected between the flow guide box and the electric multi-way valve; two double-port air boxes are fixedly connected to the bottom end of the laser cutting head, and the two electric multi-way valves are configured to face each other; an air duct is fixedly connected between the electric multi-way valve and the double-port air box, and the double-port air box can be connected to the flow guide box through the air duct, the electric multi-way valve, and the short pipe.

[0016] Preferably, two windbreaks are fixedly connected to the double-outlet air box, and the windbreaks are located at the air inlets of the double-outlet air box, with the two windbreaks being arranged opposite each other; a second fixing cylinder is fixedly connected to the double-outlet air box; the bottom of the second fixing cylinder is slidably connected to a second sliding rod via a third elastic element.

[0017] Preferably, a fixed ball seat is fixedly connected to the bottom of the second sliding rod; a spherical receiving cavity is provided at the bottom of the fixed ball seat; a rotating ball is embedded in the spherical receiving cavity of the fixed ball seat, and the rotating ball and the fixed ball seat can form a universal rotational fit.

[0018] The beneficial effects of this invention are as follows: 1. The laser cutting and trimming device for the outer periphery of an automotive lamp cover as described in this invention is connected to the limiting pressure plate via a connecting component on the central sliding plate. After the robotic arm places the lamp cover on the limiting seat, the two central sliding plates are driven by the second electric slider to slide closer to the limiting seat. The four limiting pressure plates press down simultaneously to fix the lamp cover. When the laser cutting head cuts the flash and sprue material along the outer periphery, if it is about to reach a certain locking point, the corresponding connecting component will first release the locking of the pressure plate at that point. Then, the second electric slider will drive the central sliding plate and pressure plate away, while the other pressure plates remain locked. After cutting the position, the locking is reset. This process is repeated for all locking positions. This multi-point pressing and single-point clearance fixing method replaces the situation where the traditional locking structure blocks the cutting path, improving the cutting integrity and processing quality. At the same time, the connecting component can slide on the central sliding plate, allowing the limiting pressure plate to adapt to different lamp cover shapes, replacing the traditional single-specification locking structure, and improving adaptability and applicability.

[0019] This invention discloses a laser cutting and trimming device for the outer periphery of an automotive lamp cover. A limiting pressure plate is fixed to one end of a rotating frame. A sliding seat slides on a central sliding plate via a third electric slider. A second electric cylinder is fixed to the sliding seat and supports a first fixed cylinder. Inside the cylinder, a first elastic element connects to a first sliding rod. The rotating frame is mounted on the top of the sliding rod via a first torsion spring. When the two central sliding plates are in contact with the sides of the limiting seat, multiple second electric cylinders retract synchronously, pressing the limiting pressure plate against both sides of the lamp cover. As the cylinders continue to retract, the elastic element stretches, and the sliding rod partially slides out of the cylinder, resulting in a tighter press. For lamp covers of different specifications, the first torsion spring allows the rotating frame to adjust the pressing plate's contact angle, ensuring uniform and tight contact with the outer periphery, reducing cutting offset, and guaranteeing accuracy. Simultaneously, multiple sliding seats can be adjusted along the central sliding plate to adapt to different local thickness variations in lamp covers, improving the device's versatility and positioning capability. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the structure of the No. 1 electric cylinder in this invention; Figure 3 This is a schematic diagram of the limiting seat in this invention; Figure 4 This is a schematic diagram of the side sliding plate structure in this invention; Figure 5 This is a schematic diagram of the structure of the No. 1 collection box in this invention; Figure 6 This is a schematic diagram of the card slot plate in this invention; Figure 7 This is a schematic diagram of the structure of the electric multi-way valve in this invention; Figure 8 This is a schematic diagram of the structure of the double-mouth wind box in this invention.

[0022] In the diagram: 1. Laser trimming machine base; 11. Guide rail frame 1; 12. Electric slide; 13. Electric cylinder 1; 14. Laser cutting head; 15. Fixed base; 16. Limiting seat; 17. Center slide plate; 18. Limiting pressure plate; 2. Sliding seat; 21. Electric cylinder 2; 22. Fixed cylinder 1; 23. Sliding rod 1; 24. Rotating frame; 3. Fixed pressure plate; 31. Side slide plate; 4. Inner support plate; 41. Slot; 42. Slot plate; 43. Fixing bolt; 5. Top support plate; 6. Rotating rod; 61. Anchor plate; 62. Elastic pad; 7. No. 1 collection box; 71. No. 2 collection box; 8. Flow guide box; 81. Electric multi-way valve; 82. Double-outlet air box; 83. Air duct; 9. Windproof partition; 91. No. 2 fixed cylinder; 92. No. 2 sliding rod; 93. Fixed ball seat; 94. Rotating ball. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 5 , Figure 8As shown in the embodiment of the present invention, a laser cutting and trimming device for the outer periphery of an automotive lamp cover includes a laser trimming base 1; a first guide rail frame 11 is fixedly connected to the laser trimming base 1; an electric slide frame 12 is slidably connected to the first guide rail frame 11; a first electric cylinder 13 is fixedly connected to the electric slide frame 12; a laser cutting head 14 is fixedly connected to the output end of the first electric cylinder 13; a fixed base 15 is fixedly connected to the laser trimming base 1 and located below the laser cutting head 14; a limiting seat 16 is slidably connected to the fixed base 15 via a first electric slider; a central sliding plate 17 is slidably connected to both sides of the center of the limiting seat 16 via second electric sliders; a limiting pressure plate 18 is provided on the central sliding plate 17; the central... A connecting component is provided on the central sliding plate 17, which is used to drive the limiting pressure plate 18 to press against the car headlight cover. During the laser cutting and trimming of the outer periphery of the car headlight cover, the laser trimming machine base 1 serves as the main body of the laser cutting and trimming device. The first guide rail frame 11 is fixed on the laser trimming machine base 1 and supports the sliding of the electric slide frame 12. The electric slide frame 12 can drive the first electric cylinder 13 to adjust the laser cutting head 14 to the left and right. The fixed base 15 is fixed to the bottom of the laser trimming machine base 1 and supports the limiting seat 16. The limiting seat 16 can slide back and forth on the fixed base 15 through the first electric slider. It is connected to the limiting pressure plate 18 through the connecting component on the central sliding plate 17. The robot arm picks up the car headlight cover and places it on the limiting seat 16. Then, the two center sliding plates 17 located on both sides of the center of the limiting seat 16 slide close to the limiting seat 16 via the second electric slider. The two sets of connecting components simultaneously drive the four limiting pressure plates 18 to press down on the car lamp cover, which can press and fix the car lamp cover onto the limiting seat 16. Then, the laser cutting head 14 can laser cut the flash and sprue material along the outer periphery of the car lamp cover, which plays a role in locking the laser cutting of the car lamp cover. And during the laser cutting process along the outer periphery of the car by the output end of the laser cutting head 14, when the output end of the laser cutting head 14 is about to reach the pressing and locking point of the limiting pressure plate 18, the connecting components on the center sliding plate 17 can contact the limiting pressure plate 18 at this point to lock the car lamp cover. Then, the second electric slider drives the center sliding plate 17 to press down on the car lamp cover. The sliding plate 17 and the limiting pressure plate 18 on the connecting component are moved away from the car lamp cover. The remaining limiting pressure plate 18 can still lock the car lamp cover. The output end of the laser cutting head 14 laser cuts along the outer periphery of the locking position of the car lamp cover. After the cutting is completed, the second electric slider drives the connecting component and the limiting pressure plate 18 to reset and lock the car lamp cover again. The subsequent locking positions are operated in the same way to achieve adaptive cutting of single-point locking positions. Compared with the traditional unified locking and fixing method, this fixing method of pressing on multiple points from both sides of the car lamp cover reduces the occupation of the area that needs to be cut on the outer periphery of the lamp cover, makes room for the laser cutting to complete the processing path, reduces the probability of incomplete cutting due to the locking structure blocking the edge material, and ensures the processing quality of the car lamp cover. Meanwhile, the connecting components on the central slide plate 17 can lock different models of automotive lamp covers. The limiting pressure plate 18 on the connecting components can adapt to the shape of the automotive lamp cover. The connecting components slide on the central slide plate 17 according to the shape of different models of automotive lamp covers, so that the limiting pressure plate 18 can adaptively press and lock the automotive lamp cover. This replaces the traditional locking structure with fixed specifications and the locking structure that adapts to a single model of lamp cover, improving the adaptability of the device to different processing requirements and broadening the scope of application of the device.

[0025] like Figures 1 to 5 As shown, the connecting assembly includes a sliding seat 2, a second electric cylinder 21, a first fixed cylinder 22, a first sliding rod 23, and a rotating frame 24; multiple sliding seats 2 are slidably connected to the central sliding plate 17 via a third electric slider; the second electric cylinder 21 is fixedly connected to the sliding seat 2; the first fixed cylinder 22 is fixedly connected to the output end of the second electric cylinder 21; the first sliding rod 23 is slidably connected to the first fixed cylinder 22 via a first elastic element; the rotating frame 24 is rotatably connected to the first sliding rod 23 via a first torsion spring, and is limited by pressure. Plate 18 is fixed to one end of rotating frame 24; when limiting pressure plate 18 presses against the car headlight cover, limiting pressure plate 18 is fixed to one end of rotating frame 24, sliding seat 2 slides on central sliding plate 17 via third electric slider, second electric cylinder 21 is fixed on sliding seat 2 supporting first fixed cylinder 22, first fixed cylinder 22 is connected to first sliding rod 23 via first elastic element, and rotating frame 24 is installed on top of first sliding rod 23 via first torsion spring. As the two central sliding plates 17 slide and fit against the two sides of limiting seat 16, the car headlight... The lamp cover has been placed at the center of the limiting seat 16. Subsequently, the output ends of multiple second electric cylinders 21 retract synchronously, causing multiple limiting pressure plates 18 to press against both sides of the car lamp cover. As the output ends of the second electric cylinders 21 continue to retract, the first elastic element connected to the first sliding rod 23 is stretched and stressed. The first sliding rod 23 partially slides out of the interior of the first fixing cylinder 22, making the limiting pressure plate 18 press more tightly against the car lamp cover, thus providing a tight pressing effect on the car lamp cover. At the same time, when pressing and locking lamp covers of different specifications, the first... With the help of the torsion spring, the rotating frame 24 can rotate to adjust the contact angle of the limiting pressure plate 18, so that the limiting pressure plate 18 is evenly pressed against the outer periphery of different specifications of automotive lamp covers, thereby completing the positioning and fixing of different specifications of automotive lamp covers, reducing the displacement and shaking of the lamp cover during subsequent cutting and trimming, ensuring cutting accuracy, and can adaptively adjust the position of multiple sliding seats 2 on the central slide plate 17 according to the different local thicknesses of different specifications of lamp covers, thereby adapting to the positioning operation of more specifications of automotive lamp covers, improving the adaptability and versatility of the device.

[0026] The bottom ends of the limiting pressure plate 18 are rotatably connected to transfer rollers via torsion springs of the second type. Fixed pressure plates 3 are fixed to the transfer rollers. The cross-sectional shape of the fixed pressure plates 3 is curved, and the two fixed pressure plates 3 are positioned opposite each other. Side sliding plates 31 are slidably connected to the limiting seat 16 on both sides of the central sliding plate 17 via electric sliders of the second type. When locking different sizes of automotive lamp covers, two side sliding plates 31 are provided on both sides of the central sliding plate 17. The side sliding plates 31 can also be mounted on the limiting seat 16 via electric sliders of the second type. At this time, there is one central sliding plate 17 and two side sliding plates 31 on each side of the limiting seat 16, and the central sliding plate 17 and the side sliding plates 31 are connected... Each side plate 31 is equipped with a connecting component and a limiting pressure plate 18. The bottom of the limiting pressure plate 18 is connected to the transfer roller via a second torsion spring. Two opposing, curved pressure plates 3 on the transfer roller are installed at the bottom of the limiting pressure plate 18. As the output end of the second electric cylinder 21 on the multiple connecting components retracts, it can drive the two pressure plates 3 at the bottom of the limiting pressure plate 18 to adhere to the different specifications of the car lamp cover until they are locked. The curved pressure plates 3 can adapt to the curvature of the lamp cover under the action of the second torsion spring, ensuring that the two curved pressure plates 3 adhere to the lamp cover. Compared with the single limiting pressure plate 18 pressing, the pressing force is more uniform, ensuring the stability of the pressing positioning.

[0027] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, multiple inner support plates 4 are slidably connected to the limiting seat 16, and two inner support plates 4 are configured as a group; multiple locking slots 41 are provided on the inner support plates 4; locking plates 42 are slidably connected to the limiting seat 16, and the shapes of the locking plates 42 correspond to those of the locking slots 41; fixing bolts 43 are threadedly connected to the limiting seat 16 and the locking plates 42; when the car lamp cover is placed on the limiting seat 16 and locked, the height of the multiple inner support plates 4 on the limiting seat 16 is first adjusted according to the model of the car lamp cover, and then the locking plates 42 are slidably inserted into the corresponding two inner support plates 41. The support plate 4 is limited at the slot 41, and then fixed by the fixing bolt 43 threaded connection to the slot plate 42 and the limiting seat 16. At this time, the height of a set of inner support plates 4 is fixed. Usually, the car lamp cover adopts the bottom support method with the center high and the two ends low. Therefore, the height of the multiple sets of inner support plates 4 in the center is increased, and the height of the inner support plates 4 at both ends is decreased. This adapts to the bottom of the car lamp cover with different curvature specifications, so that the bottom of the lamp cover can be fully supported, reducing the situation of the lamp cover shaking during the cutting and trimming process due to insufficient support, and ensuring the stability and cutting accuracy of the laser cutting and trimming process.

[0028] A top support plate 5 is slidably connected to the inner support plate 4; a second elastic element is fixed between the top inner wall of the inner support plate 4 and one end of the top support plate 5; the top of the top support plate 5 is provided with an arc surface; when multiple inner support plates 4 support the bottom of the car lamp cover, the top support plate 5 is slidably connected to the inside of the inner support plate 4 through the second elastic element. When the car lamp cover is pressed on the top of multiple top support plates 5 and when multiple limiting pressure plates 18 press against the car lamp cover, each top support plate 5 will adapt to shrink and adjust its height according to the curvature of the bottom of the lamp cover. The second elastic element is pressed down and shrinks under force. Finally, the top of the arc surface of all the top support plates 5 can fit against the bottom surface of the lamp cover, dispersing the support force of the lamp cover, making the support fit higher, and improving the stability of the lamp cover after placement.

[0029] A rotating groove is provided at the center of the top support plate 5; a rotating rod 6 is rotatably connected to the rotating groove of the top support plate 5 via a torsion spring No. 3; an anchor plate 61 is fixedly connected to the rotating rod 6, and the anchor plate 61 is shaped like an anchor; an elastic pad 62 is fixedly connected to the anchor plate 61; when supporting the bottom of the car headlight cover, the anchor plate 61 is rotatably connected to the rotating groove in the center of the top support plate 5 via the rotating rod 6 and the torsion spring No. 3, and the maximum rotation angle is set to 45 degrees to facilitate fixed support for the bottom of the car, and the rubber elastic pad 62 is fixed. The anchor plate 61 is used to deform and fit the bottom of the car lamp cover. When the car lamp cover is pressed down by an external force, the bottom of the lamp cover will push the elastic pad 62 to drive the anchor plate 61 and the rotating rod 6 to rotate, so that the anchor plate 61 rotates to fit the bottom contour of the lamp cover. Under the torsion of the No. 3 torsion spring, it maintains the fit. Compared with the fixed support surface, the rotatable anchor plate 61 and elastic pad 62 can adapt to the concave and convex contours of different curvatures of the bottom of the lamp cover, reduce the uneven force caused by local support gaps, improve the support fit, and ensure the stability of the cutting and trimming process.

[0030] like Figure 1 , Figures 3 to 5 As shown, a first collection box 7 is fixedly connected to one side of the central sliding plate 17; a second collection box 71 is fixedly connected to one side of the side sliding plate 31; both the first collection box 7 and the second collection box 71 have arc-shaped surfaces on the side near the limiting seat 16; during the laser cutting of the outer periphery of the car headlight cover, some waste material is easily generated during the cutting process. During each laser cutting process at a locking position, the locking position is released by sliding the central sliding plate 17 and the side sliding plate 31 in opposite directions, which can pull out the first collection box 7 and the second collection box 71 in the limiting seat 16 respectively. With the arc-shaped surfaces of the first collection box 7 and the second collection box 71, the first collection box 7 and the second collection box 71 can guide and collect the falling waste material, which plays the role of releasing the locking position and simultaneously collecting the laser cutting waste material.

[0031] like Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, a flow guide box 8 is fixedly connected to one side of the laser cutting head 14; an electric multi-way valve 81 is fixedly connected to one side of the laser cutting head 14 and below the flow guide box 8, and a short pipe is fixedly connected between the flow guide box 8 and the electric multi-way valve 81; two double-port air boxes 82 are fixedly connected to the bottom end of the laser cutting head 14, and the two electric multi-way valves 81 are positioned opposite each other; an air duct 83 is fixedly connected between the electric multi-way valve 81 and the double-port air box 82, and the double-port air box 82 can be connected to the flow guide box 8 through the air duct 83, the electric multi-way valve 81, and the short pipe; when laser cutting the outer periphery of an automotive lamp cover, the flow guide box 8 is fixed on the laser cutting head 14 and connected to an external fan through an external long pipe. The external fan blows air into the flow guide box 8 through the long pipe, and then through the short pipe to the electric multi-way valve 81. At one point, based on the current direction of cutting the outer periphery of the car headlight cover, the output end of the electric multi-way valve 81 is opened, allowing air to pass through the electric multi-way valve 81 and an air duct 83 to reach a double-outlet air box 82 and blow out. The two air outlets of the double-outlet air box 82 are respectively aimed at the cutting trajectory of the outer periphery of the car headlight cover. One air outlet is located at the front end of the output end of the laser cutting head 14, which can blow away impurities on the outer periphery surface of the car headlight cover. The other air outlet is located at the rear end of the output end of the laser cutting head 14, which can blow air to cool the cut position of the outer periphery of the car headlight cover. This reduces the situation where impurities block the laser cutting path and cause unevenness of the cut surface. At the same time, it reduces the situation where the temperature at the cutting position is too high and causes deformation of the plastic material of the headlight cover. This ensures the accuracy of laser cutting and finishing and the qualified rate of finished products.

[0032] Two windbreaks 9 are fixedly connected to the dual-outlet air box 82, and the windbreaks 9 are located at the air inlets of the dual-outlet air box 82, with the two windbreaks 9 being arranged opposite each other; a second fixed cylinder 91 is fixedly connected to the dual-outlet air box 82; the bottom of the second fixed cylinder 91 is slidably connected to a second sliding rod 92 via a third elastic element; when the dual-outlet air box 82 blows air onto the outer periphery of the car headlight cover, the second sliding rod 92 is slidably connected to the second fixed cylinder 91 via the third elastic element, so that multiple second sliding rods 92 can be pressed together. Above the car headlight cover, the stability of the locking mechanism is ensured by releasing the locking position. When the cutting position moves around the car headlight cover, the second sliding rod 92 can adapt to the surface of the car headlight cover according to the cutting position, reducing the obstruction of the cutting trajectory. In addition, the two wind deflectors 9 are fixed at the two air vents of the double-outlet air box 82. The two wind deflectors 9 can block the output end of the laser cutting head 14, reducing the impact of the air blown out of the double-outlet air box 82 on the cutting effect of the output end of the laser cutting head 14 on the outer periphery of the car headlight cover.

[0033] The bottom of the second sliding rod 92 is fixedly connected to a fixed ball seat 93; the bottom of the fixed ball seat 93 is provided with a spherical receiving cavity; a rotating ball 94 is embedded in the spherical receiving cavity of the fixed ball seat 93, and the rotating ball 94 and the fixed ball seat 93 can form a universal rotational fit; when the second sliding rod 92 presses against the area of ​​the outer periphery of the car lamp cover that has been released from the locking position, the fixed ball seat 93 is fixed to the bottom of the second sliding rod 92, and the rotating ball 94 is set in the spherical receiving cavity of the fixed ball seat 93. Through the universal rotational fit between the rotating ball 94 and the fixed ball seat 93, the rotating ball 94 can adapt to and adjust the fitting angle according to the curvature of the car lamp cover surface, maintain a stable fitting and pressing with the lamp cover surface, reduce the possibility of the second sliding rod 92 scratching the lamp cover surface, improve the stability of the pressing limit, reduce the probability of the lamp cover loosening and shifting during the cutting process, and ensure the accuracy of cutting and trimming.

[0034] Working process: During the laser cutting and trimming of the outer periphery of the automotive headlight cover, the laser trimming machine base 1 serves as the main body of the laser cutting and trimming device. The first guide rail 11 is fixed to the laser trimming machine base 1, supporting the sliding of the electric slide 12. The electric slide 12 can drive the first electric cylinder 13 to adjust the position of the laser cutting head 14 for laser cutting. The fixed base 15 is fixed to the bottom of the laser trimming machine base 1, supporting the limiting seat 16. The limiting seat 16 can slide back and forth on the fixed base 15 via the first electric slider. It is connected to the limiting pressure plate 18 via the connecting component on the central sliding plate 17. A robotic arm picks up the automotive headlight cover and places it on the limiting seat 16. Then... Two central sliding plates 17 located on either side of the center of the limiting seat 16 slide close to the limiting seat 16 via a second electric slider. The two sets of connecting components simultaneously drive four limiting pressure plates 18 to press down on the automotive lamp cover, thus pressing and fixing the automotive lamp cover onto the limiting seat 16. Subsequently, the laser cutting head 14 laser-cuts the flash and sprue material along the outer periphery of the automotive lamp cover, effectively locking the laser-cut automotive lamp cover. Furthermore, during the laser cutting process along the outer periphery of the automotive lamp cover, when the output end of the laser cutting head 14 is about to reach the locking point of the limiting pressure plate 18, the connecting components near the central sliding plate 17 can contact this limiting point. The pressure plate 18 locks the car headlight cover. Then, the second electric slider moves the central sliding plate 17 and the limiting pressure plate 18 on the connecting assembly away from the car headlight cover. The remaining limiting pressure plate 18 can still lock the car headlight cover. The output end of the laser cutting head 14 laser-cuts along the outer periphery of the locking position of the car headlight cover. After cutting, the second electric slider moves the connecting assembly and the limiting pressure plate 18 back to their original positions to lock the car headlight cover again. Subsequent locking positions are operated in the same way, achieving adaptive cutting for single-point locking positions. Compared to the traditional uniform locking method, this multi-point pressing method from both sides of the car headlight cover reduces the area occupied by cutting on the outer periphery of the cover. This design provides a complete processing path for laser cutting, reducing the probability of incomplete cutting due to the locking structure obstructing the edge material, and ensuring the processing quality of the automotive lamp cover. At the same time, the connecting components on the central slide plate 17 can lock different models of automotive lamp covers. The limiting pressure plate 18 on the connecting components can adapt to the shape of the automotive lamp cover. The connecting components slide on the central slide plate 17 according to the shape of different models of automotive lamp covers, so that the limiting pressure plate 18 can adaptively press and lock the automotive lamp cover. This replaces the traditional locking structure with fixed specifications and a locking structure that adapts to a single model of lamp cover, improving the adaptability of the device to different processing needs and broadening the application range of the device.When the limiting pressure plate 18 presses against the car headlight cover, the limiting pressure plate 18 is fixed to one end of the rotating frame 24. The sliding seat 2 slides on the central sliding plate 17 via the third electric slider. The second electric cylinder 21 is fixed on the sliding seat 2, supporting the first fixed cylinder 22. The first fixed cylinder 22 is connected to the first sliding rod 23 via the first elastic element. The rotating frame 24 is mounted on the top of the first sliding rod 23 via the first torsion spring. As the two central sliding plates 17 slide and fit against the two sides of the limiting seat 16, the car headlight cover is now placed at the center of the limiting seat 16. Subsequently, the output ends of multiple second electric cylinders 21 retract synchronously, driving multiple limiting pressure plates 1... 8. Pressed onto both sides of the car headlight cover, as the output end of the second electric cylinder 21 continues to retract, the first elastic element connected to the first sliding rod 23 is stretched and stressed. The first sliding rod 23 partially slides out of the interior of the first fixing cylinder 22, making the limiting pressure plate 18 press more tightly onto the car headlight cover, thus providing a tight pressing effect. At the same time, when pressing and locking some headlight covers of different specifications, with the cooperation of the first torsion spring, the rotating frame 24 can rotate to adjust the contact angle of the limiting pressure plate 18, so that the limiting pressure plate 18 is evenly pressed against the outer periphery of the car headlight covers of different specifications, completing the positioning and fixing of car headlight covers of different specifications, reducing subsequent cutting and repair. During the entire process, the lampshade may shift or wobble, ensuring cutting accuracy. Furthermore, the position of multiple sliding seats 2 on the central slide plate 17 can be adaptively adjusted according to the varying local thicknesses of different lampshade specifications, thus adapting to positioning operations for more automotive lampshade specifications and improving the device's adaptability and versatility. When locking automotive lampshades of different specifications, two side slide plates 31 are provided on both sides of the central slide plate 17. The side slide plates 31 can also be mounted on the limiting seat 16 using a second electric slider. At this time, the limiting seat 16 has one central slide plate 17 and two side slide plates 31 on each side, and the central slide plate 17 and side slide plates 31... Each component is equipped with a connecting assembly and a limiting pressure plate 18. The bottom of the limiting pressure plate 18 is connected to the transfer roller via a second torsion spring. Two opposing and curved fixed pressure plates 3 on the transfer roller are installed at the bottom of the limiting pressure plate 18. As the output end of the second electric cylinder 21 on the multiple connecting assemblies retracts, it can drive the two fixed pressure plates 3 at the bottom of the limiting pressure plate 18 to adhere to the different specifications of the car lamp cover until they are locked. The curved fixed pressure plates 3 can adapt to the curvature of the lamp cover under the action of the second torsion spring, ensuring that the two curved fixed pressure plates 3 adhere to the lamp cover. Compared with the single limiting pressure plate 18 pressing, the pressing force is more uniform, ensuring the stability of the pressing positioning. When the car headlight cover is placed on the limiting seat 16 and locked, first adjust the height of multiple inner support plates 4 on the limiting seat 16 according to the model of the car headlight cover. Then, slide the locking plate 42 into the corresponding locking slots 41 of the two inner support plates 4 for limiting. Next, use fixing bolts 43 to thread them onto the locking plate 42 and the limiting seat 16 for fixation. At this time, the height of one set of inner support plates 4 is fixed. Usually, car headlight covers adopt a bottom support method with a high center and low ends. Therefore, the height of the multiple sets of inner support plates 4 in the center is adjusted to be higher, and the height of the inner support plates 4 at both ends is adjusted to be lower. Simply adjust the height to accommodate the bottom of car headlight covers with different curvatures, ensuring sufficient support and reducing wobbling during cutting and trimming due to insufficient support. This guarantees the stability and precision of the laser cutting process. When multiple inner support plates 4 support the bottom of the car headlight cover, the top support plate 5 is slidably connected to the inside of the inner support plate 4 via the second elastic element. When the car headlight cover presses against the tops of the multiple top support plates 5 and is covered by multiple limiting pressure plates 18, each top support plate 5 will adjust according to the curvature of the bottom of the headlight cover. The height is adjusted by shrinking, and the second elastic element is pressed down and compressed, so that the top of the arc surface of all the top support plates 5 can fit against the bottom surface of the lamp cover, dispersing the support force of the lamp cover, making the support fit better, and improving the stability of the lamp cover after placement; when supporting the bottom of the car lamp cover, the anchor-shaped anchor plate 61 is rotatably connected to the rotating groove in the center of the top support plate 5 through the rotating rod 6 and the third torsion spring, and the maximum rotation angle is set to 45 degrees, which facilitates the fixed support of the bottom of the car. The rubber elastic pad 62 is fixed to the anchor plate 61. The upper part is used to deform and fit the bottom of the car lamp cover. When the car lamp cover is pressed down by an external force, the bottom of the lamp cover will push the elastic pad 62 to drive the anchor plate 61 and the rotating rod 6 to rotate, so that the anchor plate 61 rotates to fit the bottom contour of the lamp cover. Under the torsion of the No. 3 torsion spring, it maintains the fit. Compared with the fixed support surface, the rotatable anchor plate 61 and elastic pad 62 can adapt to the concave and convex contours of different curvatures of the bottom of the lamp cover, reduce the uneven force caused by local support gaps, improve the support fit, and ensure the stability of the cutting and trimming process. During the laser cutting process of the outer periphery of the car headlight cover, some waste material is easily generated during the cutting. During each laser cutting process at a locking position, the locking position is released by the reverse sliding of the central slide plate 17 and the side slide plate 31. This can pull out the first collection box 7 and the second collection box 71 in the limiting seat 16 respectively. With the arc-shaped surfaces of the first collection box 7 and the second collection box 71, the first collection box 7 and the second collection box 71 can guide and collect the falling waste material, which plays the role of releasing the locking position and collecting the laser cutting waste at the same time. When laser cutting the outer periphery of an automotive headlight cover, the airflow guide box 8 is fixed to the laser cutting head 14 and connected to an external fan via a long external pipe. The external fan blows air through the long pipe into the airflow guide box 8, then through a short pipe to the electric multi-way valve 81 for splitting. Based on the current cutting direction of the automotive headlight cover's outer periphery, the corresponding output end of the electric multi-way valve 81 is opened, allowing air to pass through the electric multi-way valve 81 and an air duct 83 to reach a dual-outlet air box 82 and be blown out. The two air outlets of the dual-outlet air box 82 are respectively aligned with the cutting trajectory of the automotive headlight cover's outer periphery, with one outlet located at the output end of the laser cutting head 14. The front-end air vent removes impurities from the outer surface of the automotive headlight cover. The other vent, located at the rear of the laser cutting head 14's output, cools the cut area of ​​the headlight cover, reducing the likelihood of impurities obstructing the laser cutting path and causing unevenness. It also reduces the risk of overheating at the cutting point, which could lead to deformation of the plastic material and ensure the precision of the laser cutting process and the high yield rate of the finished product. When the dual-vent air box 82 blows air onto the outer periphery of the headlight cover, the second sliding rod 92 is slidably connected to the second fixed cylinder 91 via the third elastic element, allowing multiple second sliding rods to... The movable rod 92 can press against the car headlight cover that has been released from its locking position, ensuring the stability of the car headlight cover's locking. When the cutting position moves around the outer periphery of the car headlight cover, the second sliding rod 92 can adapt to the cutting position and conform to the surface of the car headlight cover, reducing the obstruction of the cutting trajectory. Furthermore, the two wind deflectors 9 are fixed to the two air vents of the dual-vent box 82, respectively. The two wind deflectors 9 can shield the output end of the laser cutting head 14, reducing the impact of the air blown out of the dual-vent box 82 on the cutting effect of the laser cutting head 14 on the outer periphery of the car headlight cover. When the second sliding rod 92 moves towards the car headlight cover... When pressing the area around the outer periphery of the lamp cover that has been released from the locking position, the fixed ball seat 93 is fixed to the bottom of the second sliding rod 92. The rotating ball 94 is set in the spherical receiving cavity of the fixed ball seat 93. By rotating the ball 94 and the fixed ball seat 93, a universal rotation fit can be formed, so that the rotating ball 94 can adapt to the curvature of the automotive lamp cover surface and adjust the fitting angle accordingly, maintaining a stable fit and pressing with the lamp cover surface, reducing the possibility of the second sliding rod 92 scratching the lamp cover surface, improving the stability of the pressing limit, reducing the probability of the lamp cover loosening and shifting during the cutting process, and ensuring the accuracy of cutting and trimming.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A peripheral laser cutting trimming device for an automobile lamp shade, characterized by: The device includes a laser trimming machine base; a first guide rail frame is fixedly mounted on the laser trimming machine base; an electric slide is slidably connected to the first guide rail frame; a first electric cylinder is fixedly mounted on the electric slide; a laser cutting head is fixedly connected to the output end of the first electric cylinder; a fixed base is fixedly mounted on the laser trimming machine base and below the laser cutting head; a limit seat is slidably connected to the fixed base via a first electric slider; a central sliding plate is slidably connected to both sides of the center of the limit seat via second electric sliders; a limit pressure plate is provided on the central sliding plate; and a connecting component is provided on the central sliding plate, the connecting component being used to drive the limit pressure plate to press against the automotive lamp cover.

2. The peripheral laser cutting trimming device for automobile lampshade according to claim 1, characterized in that: The connecting assembly includes a sliding seat, a second electric cylinder, a first fixed cylinder, a first sliding rod, and a rotating frame; multiple sliding seats are slidably connected to the central sliding plate via a third electric slider; the second electric cylinder is fixedly connected to the sliding seat; the first fixed cylinder is fixedly connected to the output end of the second electric cylinder; the first sliding rod is slidably connected to the first fixed cylinder via a first elastic element; the rotating frame is rotatably connected to the first sliding rod via a first torsion spring, and a limiting pressure plate is fixedly connected to one end of the rotating frame.

3. The peripheral laser cutting trimming device for automobile lampshade according to claim 2, characterized in that: Both sides of the bottom end of the limiting pressure plate are rotatably connected to the transfer rollers via a second torsion spring; a fixed pressure plate is fixedly connected to the transfer roller, the cross-sectional shape of the fixed pressure plate is curved, and the two fixed pressure plates are set to face each other; both sides of the limiting seat and the central sliding plate are slidably connected to the side sliding plates via a second electric slider.

4. The peripheral laser cutting trimming device for automobile lampshade according to claim 1, characterized in that: Multiple inner support plates are slidably connected to the limiting seat, and two inner support plates are set as a group; multiple locking slots are opened on the inner support plates; a locking plate is slidably connected to the limiting seat, and the shape of the locking plate corresponds to the locking slot; the limiting seat and the locking plate are threadedly connected with fixing bolts.

5. The laser cutting and trimming device for the outer periphery of an automotive lamp cover according to claim 4, characterized in that: A top support plate is slidably connected to the inner support plate; a second elastic element is fixedly connected between the top inner wall of the inner support plate and one end of the top support plate; and an arc surface is provided at the top end of the top support plate.

6. The laser cutting and trimming device for the outer periphery of an automotive lamp cover according to claim 5, characterized in that: A rotating groove is provided at the center of the top support plate; a rotating rod is rotatably connected to the rotating groove of the top support plate through a torsion spring No. 3; an anchor plate is fixedly connected to the rotating rod, and the anchor plate is shaped like an anchor; an elastic pad is fixedly connected to the anchor plate.

7. The laser cutting and trimming device for the outer periphery of an automotive lamp cover according to claim 3, characterized in that: A first collection box is fixedly connected to one side of the central sliding plate; a second collection box is fixedly connected to one side of the side sliding plate; both the first and second collection boxes have an arc-shaped surface on the side near the limiting seat.

8. The laser cutting and trimming device for the outer periphery of an automotive lamp cover according to claim 1, characterized in that: A flow guide box is fixedly connected to one side of the laser cutting head; an electric multi-way valve is fixedly connected to one side of the laser cutting head and below the flow guide box, and a short pipe is fixedly connected between the flow guide box and the electric multi-way valve; two double-port air boxes are fixedly connected to the bottom of the laser cutting head, and the two electric multi-way valves are set opposite each other; an air duct is fixedly connected between the electric multi-way valve and the double-port air box, and the double-port air box can be connected to the flow guide box through the air duct, the electric multi-way valve, and the short pipe.

9. The laser cutting and trimming device for the outer periphery of an automotive lamp cover according to claim 8, characterized in that: Two windbreaks are fixedly connected to the double-outlet air box, and the windbreaks are located at the air inlets of the double-outlet air box, with the two windbreaks being arranged opposite each other; a second fixing cylinder is fixedly connected to the double-outlet air box; the bottom of the second fixing cylinder is slidably connected to a second sliding rod through a third elastic element.

10. The laser cutting and trimming device for the outer periphery of an automotive lamp cover according to claim 9, characterized in that: The bottom of the second sliding rod is fixedly connected to a fixed ball seat; the bottom of the fixed ball seat is provided with a spherical receiving cavity; a rotating ball is embedded in the spherical receiving cavity of the fixed ball seat, and the rotating ball and the fixed ball seat can form a universal rotational fit.

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