A laser cutting device for automobile headlight lens

Abstract

The present invention relates to the technical field of laser cutting of automotive lamps, and in particular to a laser cutting device for automotive lamp lenses, comprising a main body plate, wherein a sealed cutting mechanism for polygonally cutting the side surface of a light guide plate is arranged at the upper end of the main body plate, wherein second limiting bodies are slidingly arranged in the two second limiting grooves respectively, a connector is fixedly connected to the side surface of a fixed body at a position below the second fixed body, a third fixed body is fixedly connected to the end of the connector, and a movable clamping mechanism for clamping connecting plates for fixing a plurality of light guide plates is arranged at the upper end of the main body plate; an air cushion is inflated so as to make the air cushion in close contact with the side surface of the light guide plate, an air inlet end of a second air pump is connected to a protective gas, thereby filling the empty groove with the protective gas to prevent bubbles from being generated by the impurity gas during the laser cutting process.

Description

Technical Field

[0001] The invention relates to the technical field of automobile lamp laser cutting, and in particular to a laser cutting device for automobile lamp lenses. Background Art

[0002] The front and rear of the car are equipped with headlight lenses that can be used for lighting at night. The headlight lenses are composed of a variety of mechanisms. Among them, the light guide plate is an important component in the car headlight lens system. It is used to guide and diffuse light to achieve uniform lighting effects. It plays an important role in improving the light transmittance of the headlights. The light guide plate is an optical element, usually made of transparent materials (such as acrylic, polycarbonate, etc.), used to evenly disperse the light emitted by the light source to the entire surface. The light guide plate is generally a rectangular structure, one side of which is cut into a polygonal arc surface according to factors such as the intensity of the vehicle lighting, thereby improving the ability to disperse light.

[0003] In the prior art, when cutting a transparent light guide plate, generally a plurality of light guide plate originals are first manufactured through a mold, and the light guide plate originals are fixed by connecting sheets, and then the sides of the light guide plates are cut by laser cutting, and protective gas is sprayed on the surface of the light guide plates during cutting. When the prior art device performs laser cutting on the light guide plates, it cannot ensure that the cutting surface is filled with protective gas, and the heat generated during cutting cannot be removed in time, resulting in bubbles easily appearing on the cutting surface of the light guide plates, thereby reducing the performance of the light guide plates in uniformly transmitting light. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a laser cutting device for automobile headlight lenses.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: a laser cutting device for automobile headlight lenses, comprising a main body plate, the upper end of the main body plate is provided with a sealed cutting mechanism for polygonal cutting of the side of the light guide plate, the sealed cutting mechanism comprises two symmetrically arranged second limiting grooves, the two second limiting grooves are provided on the upper end surface of the main body plate, the second limiting bodies are respectively slidably provided in the two second limiting grooves, the upper end surfaces of the two second limiting bodies are respectively fixedly connected with third electric telescopic rods, the telescopic ends of the two third electric telescopic rods are fixedly connected with second fixed bodies, and the lower end of the second fixed body is provided with a guide groove A fifth fixed body is slidably arranged in the guide groove, a connecting body is fixedly connected to the side surface of the fifth fixed body at a position below the second fixed body, a third fixed body is fixedly connected to the end of the connecting body, a mobile clamping mechanism for clamping connecting plates for fixing a plurality of light guide plates is arranged at the upper end of the main body plate, an empty groove is opened on the side of the third fixed body close to the mobile clamping mechanism, a fifth motor is fixedly connected to the side surface of the third fixed body, a third threaded rod is fixedly connected to the transmission shaft end of the fifth motor, a third limiting body is cooperatively arranged on the side surface of the third threaded rod, and the upper and lower end surfaces of the third limiting body are in contact with the third fixed body.

[0006] Preferably, a mounting groove is provided on the side of the third limiting body, a fifth electric telescopic rod is fixedly connected to the upper end of the mounting groove, a telescopic end of the fifth electric telescopic rod is fixedly connected to a fourth fixed body that slides with the mounting groove, and a laser transmitting head is provided on the side of the fourth fixed body.

[0007] Preferably, the third fixed body is fixedly connected with a protective plate opposite to the third limiting body in the empty groove, a fourth limiting groove is opened in the third fixed body, an air cushion is fixedly connected in the fourth limiting groove, a one-way air outlet is opened on the upper end surface of the third fixed body, and the upper end of the one-way air outlet is fixedly connected with a second air pump communicated with the empty groove.

[0008] Preferably, a fourth motor is fixedly connected to the side of the second fixed body, a fourth threaded rod is fixedly connected to the transmission shaft end of the fourth motor, the side of the fourth threaded rod is threadedly matched with the fifth fixed body, and two third motors corresponding to the positions of the second limiting grooves are fixedly connected to the side of the main plate, the transmission shaft ends of the two third motors are respectively fixedly connected to the second threaded rods in the second limiting grooves, and the two second threaded rods are respectively threadedly matched with the second limiting body.

[0009] Preferably, the mobile clamping mechanism includes a first limiting groove opened at the upper end of the main body plate, a first motor is fixedly connected to the side surface of the main body plate, a transmission shaft end of the first motor is fixedly connected to a first threaded rod in the first limiting groove, a first limiting body which is slidably matched with the first limiting groove is provided on the side surface of the first threaded rod through threaded cooperation, a first electric telescopic rod is fixedly connected to the upper end of the first limiting body, and a second electric telescopic rod is fixedly connected to the telescopic end of the first electric telescopic rod.

[0010] Preferably, the telescopic end of the second electric telescopic rod is fixedly connected to the second motor, the transmission shaft end of the second motor is fixedly connected to the first fixed body, one side of the first fixed body is a groove structure, the end face of the first fixed body is provided with a plurality of circumferentially arranged air holes, the inner side face of the first fixed body is fixedly connected to a plurality of first connecting plates arranged at equal angles, the inner sides of the plurality of first connecting plates are fixedly connected to the first air pump, the end face of the first air pump is fixedly connected to three linearly arranged infrared detectors, and the air outlet end of the first air pump is connected to the plurality of air holes through an air pipe.

[0011] Preferably, an annular placement groove is provided on the end surface of the first fixed body, and a plurality of circumferentially arranged springs are fixedly connected in the placement groove, and the ends of the plurality of springs are respectively fixedly connected with pressure sensors, and the ends of the plurality of pressure sensors are fixedly connected with limit rings that slide in cooperation with the placement groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The first air pump discharges the air in the first fixed body through the air hole, so that the connecting piece is tightly connected to the first fixed body through air pressure. At the same time, by observing the values ​​of several pressure sensors, the distance between each position of the limit ring and the connecting piece can be detected. When the value of a certain pressure sensor becomes smaller, it is necessary to promptly check the air tightness of the device to ensure that the connecting piece can be firmly fixed on the side of the limit ring, and then start the first electric telescopic rod and the second electric telescopic rod. The first fixed body is aligned with the second fixed body through the extension and contraction of the first electric telescopic rod and the second electric telescopic rod. At the same time, start The second motor is started, and the second motor drives the first fixed body to rotate until the three infrared detectors are parallel to the empty slot on the side of the third fixed body. Then the third motor is started, and the two third motors drive the second threaded rods to rotate. The two second threaded rods cooperate to drive the second limiter to move, so that the light guide plate moves into the empty slot on the side of the third fixed body. Then the air cushion is inflated, so that the air cushion is in close contact with the side of the light guide plate. The air inlet end of the second air pump is connected to the protective gas, so that the empty slot is filled with the protective gas, so as to prevent bubbles from being generated due to impurity gas during the laser cutting process, and improve the light transmittance of the surface of the light guide plate after cutting;

[0014] 2. The fifth motor drives the third threaded rod to rotate, and the third threaded rod cooperates to drive the third limiter to move, so that the surface of the light guide plate can be cut left and right. While moving left and right, the fifth electric telescopic rod is a multi-stage telescopic rod, which can move the fourth fixed body up and down, so that any polygonal structure can be cut on the side of the light guide plate, thereby improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 The overall structure of the present invention is cut away Figure 1 ;

[0017] Figure 3 The overall structure of the present invention is cut away Figure 2 ;

[0018] Figure 4 It is a schematic diagram of the partial structure of the present invention Figure 1 ;

[0019] Figure 5 It is a schematic diagram of the partial structure of the present invention Figure 2 ;

[0020] Figure 6 For the present invention Figure 2 A magnified image of point A;

[0021] Figure 7 For the present invention Figure 2 Enlarged view of point B.

[0022] 1. Main body plate; 2. Mobile clamping mechanism; 3. Sealed cutting mechanism; 21. First motor; 22. First limiting groove; 23. First limiting body; 24. First threaded rod; 25. First electric telescopic rod; 26. Second electric telescopic rod; 27. Second motor; 28. First fixed body; 29. ​​Placement groove; 210. Spring; 211. Pressure sensor; 212. Limiting ring; 213. Air hole; 214. First connecting plate; 215. First air pump; 216. Infrared detector; 31. Third motor; 32. Second limiting groove; 33. Second limiting body; 34. Three electric telescopic rods; 35, second threaded rod; 36, second fixed body; 37, third fixed body; 38, fourth motor; 39, empty slot; 310, second air pump; 311, protective plate; 312, air cushion; 313, fifth motor; 314, third threaded rod; 315, third limiting body; 316, mounting slot; 317, fourth limiting slot; 318, fifth electric telescopic rod; 319, fourth fixed body; 320, laser transmitter; 321, fifth fixed body; 322, fourth threaded rod; 323, connector; 324, one-way air outlet; 325, guide slot. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] See also Figure 1-Figure 7 A laser cutting device for automobile headlight lens comprises a main body plate 1, and a sealed cutting mechanism 3 for performing polygonal cutting on the side of a light guide plate is arranged at the upper end of the main body plate 1.

[0025] In this embodiment, the sealed cutting mechanism 3 includes two symmetrically arranged second limit grooves 32, and the two second limit grooves 32 are opened on the upper end surface of the main body plate 1. The second limit bodies 33 are respectively slidably arranged in the two second limit grooves 32, and the upper end surfaces of the two second limit bodies 33 are respectively fixedly connected with the third electric telescopic rods 34, and the telescopic ends of the two third electric telescopic rods 34 are fixedly connected with the second fixed body 36. The lower end of the second fixed body 36 is opened with a guide groove 325, and the fifth fixed body 321 is slidably arranged in the guide groove 325. The side of the fifth fixed body 321 is fixedly connected with a connecting body 323 at a position below the second fixed body 36, and the end of the connecting body 323 is fixedly connected with the third fixed body 37.

[0026] The third fixed body 37 is provided with an empty groove 39 on the side close to the movable clamping mechanism 2, and the side of the third fixed body 37 is fixedly connected to the fifth motor 313, and the transmission shaft end of the fifth motor 313 is fixedly connected to the third threaded rod 314, and the side of the third threaded rod 314 is cooperated with the third limiting body 315, and the upper and lower end surfaces of the third limiting body 315 are in contact with the third fixed body 37.

[0027] A mounting groove 316 is provided on the side of the third limiting body 315, and a fifth electric telescopic rod 318 is fixedly connected to the upper end of the mounting groove 316. The telescopic end of the fifth electric telescopic rod 318 is fixedly connected to a fourth fixed body 319 that slidably cooperates with the mounting groove 316, and a laser transmitting head 320 is provided on the side of the fourth fixed body 319.

[0028] The third fixed body 37 is fixedly connected with a protective plate 311 opposite to the third limiting body 315 in the empty groove 39, and a fourth limiting groove 317 is opened in the third fixed body 37, and an air cushion 312 is fixedly connected in the fourth limiting groove 317. A one-way air outlet 324 is opened on the upper end surface of the third fixed body 37, and the upper end of the one-way air outlet 324 is fixedly connected with a second air pump 310 communicated with the empty groove 39.

[0029] A fourth motor 38 is fixedly connected to the side of the second fixed body 36, a fourth threaded rod 322 is fixedly connected to the transmission shaft end of the fourth motor 38, a side of the fourth threaded rod 322 is threadedly matched with the fifth fixed body 321, two third motors 31 corresponding to the positions of the second limiting grooves 32 are fixedly connected to the side of the main body plate 1, the transmission shaft ends of the two third motors 31 are respectively fixedly connected to the second threaded rods 35 in the second limiting grooves 32, and the two second threaded rods 35 are respectively threadedly matched with the second limiting body 33.

[0030] Specifically, the two second threaded rods 35 cooperate to drive the second limiting body 33 to move, so that the light guide plate moves to the empty groove 39 on the side of the third fixed body 37. Then the air cushion 312 is inflated so that the air cushion 312 is in close contact with the side of the light guide plate. The air inlet end of the second air pump 310 is connected to the protective gas, so that the empty groove 39 is filled with protective gas, which prevents the generation of bubbles due to impurity gas during the laser cutting process and improves the light transmittance of the surface of the light guide plate after cutting.

[0031] In this embodiment, a movable clamping mechanism 2 for clamping connecting pieces that fix a plurality of light guide plates is disposed at the upper end of the main body plate 1 .

[0032] The mobile clamping mechanism 2 includes a first limiting groove 22 opened at the upper end of the main body plate 1, and a first motor 21 is fixedly connected to the side of the main body plate 1. The transmission shaft end of the first motor 21 is fixedly connected to the first threaded rod 24 in the first limiting groove 22, and the side of the first threaded rod 24 is provided with a first limiting body 23 that slides with the first limiting groove 22 through threaded cooperation, and the upper end of the first limiting body 23 is fixedly connected to the first electric telescopic rod 25, and the telescopic end of the first electric telescopic rod 25 is fixedly connected to the second electric telescopic rod 26.

[0033] The telescopic end of the second electric telescopic rod 26 is fixedly connected to the second motor 27, the transmission shaft end of the second motor 27 is fixedly connected to the first fixed body 28, one side of the first fixed body 28 is a groove structure, the end face of the first fixed body 28 is provided with a plurality of circumferentially arranged air holes 213, the inner side face of the first fixed body 28 is fixedly connected to a plurality of first connecting plates 214 arranged at equal angles, the inner sides of the plurality of first connecting plates 214 are fixedly connected to a first air pump 215, the end face of the first air pump 215 is fixedly connected to three linearly arranged infrared detectors 216, and the air outlet end of the first air pump 215 is connected to the plurality of air holes 213 through an air pipe.

[0034] An annular placement groove 29 is provided on the end face of the first fixed body 28, and a plurality of circumferentially arranged springs 210 are fixedly connected in the placement groove 29, and the ends of the plurality of springs 210 are respectively fixedly connected with pressure sensors 211, and the ends of the plurality of pressure sensors 211 are fixedly connected with limit rings 212 that slidably cooperate with the placement groove 29.

[0035] Specifically, the first air pump 215 discharges the air in the first fixed body 28 through the air hole 213, so that the connecting piece is tightly connected to the first fixed body 28 through air pressure. At the same time, by observing the values ​​of several pressure sensors 211, the distance between each position of the limit ring 212 and the connecting piece can be detected. When the value of a certain pressure sensor 211 becomes smaller, it is necessary to promptly check the air tightness of the device to ensure that the connecting piece is firmly fixed on the side of the limit ring 212.

[0036] When in use, first place the main body plate 1 on a horizontal plane, then make the connecting piece connecting several light guide plates contact with the limiting ring 212 on the side of the first fixed body 28, then start the first air pump 215, the first air pump 215 discharges the air in the first fixed body 28 through the air hole 213, so that the connecting piece is tightly connected to the first fixed body 28 through air pressure, and at the same time, by observing the values ​​of several pressure sensors 211, the distance between each position of the limiting ring 212 and the connecting piece can be detected. When the value of a certain pressure sensor 211 becomes smaller, it is necessary to promptly check the air tightness of the device to ensure that the connecting piece can be firmly fixed on the side of the limiting ring 212, and then start the first electric telescopic rod 25 and the second electric telescopic rod 26. The extension and retraction of the telescopic rod 26 aligns the first fixed body 28 with the second fixed body 36, and at the same time, the second motor 27 is started, and the second motor 27 drives the first fixed body 28 to rotate until the three infrared detectors 216 are parallel to the empty slot 39 on the side of the third fixed body 37, and then the third motor 31 is started, and the two third motors 31 drive the second threaded rod 35 to rotate, and the two second threaded rods 35 cooperate to drive the second limiting body 33 to move, so that the light guide plate moves to the empty slot 39 on the side of the third fixed body 37, and then the air cushion 312 is inflated so that the air cushion 312 is in close contact with the side of the light guide plate, and the air inlet end of the second air pump 310 is connected to the protective gas, so that the empty slot 39 is filled with protective gas to prevent bubbles from being generated due to impurity gases during laser cutting, thereby improving the light transmittance of the surface of the light guide plate after cutting.

[0037] Then, the laser emitting head 320 is started. During the cutting process of the laser emitting head 320, the fifth motor 313 drives the third threaded rod 314 to rotate, and the third threaded rod 314 cooperates to drive the third limiting body 315 to move, so that the surface of the light guide plate can be cut left and right. While moving left and right, the fifth electric telescopic rod 318 is a multi-stage telescopic rod, which can move the fourth fixed body 319 up and down, so that any polygonal structure can be cut on the side of the light guide plate, thereby improving the reliability of the device.

[0038] The above shows and describes 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 above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser cutting device for automobile headlight lenses, comprising a main body plate (1), characterized in that: The upper end of the main body plate (1) is provided with a sealed cutting mechanism (3) for performing polygonal cutting on the side surface of the light guide plate. The sealed cutting mechanism (3) comprises two symmetrically arranged second limiting grooves (32). The two second limiting grooves (32) are provided on the upper end surface of the main body plate (1). Second limiting bodies (33) are slidably provided in the two second limiting grooves (32). The upper end surfaces of the two second limiting bodies (33) are respectively fixedly connected with third electric telescopic rods (34). The telescopic ends of the two third electric telescopic rods (34) are fixedly connected with second fixing bodies (36). The lower end of the second fixing body (36) is provided with a guide groove (325). The guide groove ( A fifth fixed body (321) is slidably arranged in the inner portion of the main body (325); a connecting body (323) is fixedly connected to the side surface of the fifth fixed body (321) at a position below the second fixed body (36); a third fixed body (37) is fixedly connected to the end of the connecting body (323); a movable clamping mechanism (2) for clamping connecting sheets for fixing a plurality of light guide plates is arranged at the upper end of the main body plate (1); a hollow groove (39) is provided on the side surface of the third fixed body (37) close to the movable clamping mechanism (2); a fifth motor (313) is fixedly connected to the side surface of the third fixed body (37); a third threaded rod (314) is fixedly connected to the transmission shaft end of the fifth motor (313); A third limiting body (315) is provided on the side of the third threaded rod (314); the upper and lower end surfaces of the third limiting body (315) are in contact with the third fixed body (37); a mounting groove (316) is provided on the side of the third limiting body (315); a fifth electric telescopic rod (318) is fixedly connected to the upper end of the mounting groove (316); a telescopic end of the fifth electric telescopic rod (318) is fixedly connected to a fourth fixed body (319) slidably matched with the mounting groove (316); a laser emitting head (320) is provided on the side of the fourth fixed body (319); and a laser emitting head (320) is fixedly connected to the third limiting body (315) in the empty groove (39). The protective plate (311) is provided with a fourth limiting groove (317) in the third fixed body (37), an air cushion (312) is fixedly connected in the fourth limiting groove (317), a one-way air outlet (324) is provided on the upper end surface of the third fixed body (37), and a second air pump (310) in communication with the empty groove (39) is fixedly connected to the upper end of the one-way air outlet (324); when in use, the light guide plate is moved into the empty groove (39) on the side of the third fixed body (37), and then the air cushion (312) is inflated so that the air cushion (312) is in close contact with the side of the light guide plate, and the air inlet end of the second air pump (310) is connected to the protective gas, so that the empty groove (39) is filled with the protective gas.

2. The laser cutting device for automobile headlight lens according to claim 1, characterized in that: A fourth motor (38) is fixedly connected to the side of the second fixed body (36), a fourth threaded rod (322) is fixedly connected to the transmission shaft end of the fourth motor (38), a side of the fourth threaded rod (322) is threadedly matched with a fifth fixed body (321), two third motors (31) corresponding to the positions of the second limiting grooves (32) are fixedly connected to the side of the main body plate (1), the transmission shaft ends of the two third motors (31) are respectively fixedly connected to second threaded rods (35) in the second limiting grooves (32), and the two second threaded rods (35) are respectively threadedly matched with the second limiting body (33).

3. The laser cutting device for automobile headlight lens according to claim 1, characterized in that: The mobile clamping mechanism (2) comprises a first limiting groove (22) provided at the upper end of the main body plate (1); a first motor (21) is fixedly connected to the side of the main body plate (1); a transmission shaft end of the first motor (21) is fixedly connected to a first threaded rod (24) in the first limiting groove (22); a first limiting body (23) which is slidably matched with the first limiting groove (22) is provided on the side of the first threaded rod (24) through threaded matching; a first electric telescopic rod (25) is fixedly connected to the upper end of the first limiting body (23); and a second electric telescopic rod (26) is fixedly connected to the telescopic end of the first electric telescopic rod (25).

4. The laser cutting device for automobile headlight lens according to claim 3 is characterized in that: The telescopic end of the second electric telescopic rod (26) is fixedly connected to a second motor (27), the transmission shaft end of the second motor (27) is fixedly connected to a first fixed body (28), one side of the first fixed body (28) is a groove structure, the end surface of the first fixed body (28) is provided with a plurality of circumferentially arranged air holes (213), the inner side surface of the first fixed body (28) is fixedly connected to a plurality of first connecting plates (214) arranged at equal angles, the inner sides of the plurality of first connecting plates (214) are fixedly connected to a first air pump (215), the end surface of the first air pump (215) is fixedly connected to three linearly arranged infrared detectors (216), and the air outlet end of the first air pump (215) is connected to the plurality of air holes (213) via an air delivery pipe.

5. The laser cutting device for automobile headlight lens according to claim 4 is characterized in that: An annular placement groove (29) is formed on the end surface of the first fixed body (28), a plurality of circumferentially arranged springs (210) are fixedly connected in the placement groove (29), the ends of the plurality of springs (210) are respectively fixedly connected to pressure sensors (211), and the ends of the plurality of pressure sensors (211) are fixedly connected to limit rings (212) that slidably cooperate with the placement groove (29).

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