A laser engraving device for vehicle VIN code

Abstract

The present invention discloses a laser engraving device for a vehicle VIN code, and belongs to the technical field of VIN code engraving. The laser engraving device includes a photolithography component and a positioning component. The photolithography component includes a laser and a galvanometer lens, and the laser emitted by the laser is emitted through the galvanometer lens. The positioning component includes a cylinder, a connecting plate, a transition ring and a positioning frame. The cylinder is located on the connecting plate, and the output shaft of the cylinder is connected to the transition ring by transmission to drive the transition ring to rise and fall. The positioning frame is inserted into the transition ring, and the positioning frame and the transition ring are rotatably matched. The galvanometer lens is located on the positioning frame, and the bottom of the positioning frame has two rollers for abutting against the workpiece, and the two rollers are arranged at intervals. A laser engraving device for a vehicle VIN code provided by an embodiment of the present invention can realize automatic positioning of the galvanometer lens, and can adapt to the morphological differences existing when the workpiece moves to the processing position, thereby ensuring the consistency of engraving of multiple workpieces.

Description

Technical Field

[0001] The present invention belongs to the technical field of VIN code engraving, and more specifically, relates to a laser engraving device for a vehicle VIN code. Background Art

[0002] The VIN code is the vehicle identification number, which consists of 17 digits and letters and is used to identify various information about the production and manufacturing of the car. The VIN code is usually engraved in a conspicuous position inside the vehicle, such as the lower part of the windshield or the left side of the dashboard. There are also very strict requirements for its engraving shape and depth.

[0003] In recent years, laser processing has gradually begun to be used in VIN code engraving, which has made up for the shortcomings of traditional mechanical engraving methods and has significant advantages such as long life, fast speed and high degree of automation.

[0004] However, the laser engraving devices currently on the market have the following problems: when the workpiece is moved to the processing position, the layout shape is different (for example: tilted or inconsistent with the engraving spacing), and it is difficult to adjust the positioning of the laser engraving device relative to the workpiece, resulting in the inability to ensure the consistency of engraving on multiple workpieces. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a laser engraving device for vehicle VIN codes, which aims to realize automatic positioning of the galvanometer lens and adapt to the morphological differences when the workpiece moves to the processing position, thereby ensuring the consistency of engraving on multiple workpieces.

[0006] The present invention provides a laser engraving device for a vehicle VIN code, the laser engraving device comprising a photoengraving component and a positioning component;

[0007] The photolithography assembly includes a laser and a galvanometer lens, and the laser light emitted by the laser is emitted through the galvanometer lens;

[0008] The positioning assembly includes a cylinder, a connecting plate, a transition ring and a positioning frame. The cylinder is located on the connecting plate. The output shaft of the cylinder is transmission-connected to the transition ring to drive the transition ring to rise and fall. The positioning frame is inserted into the transition ring, and the positioning frame and the transition ring are rotationally matched. The galvanometer lens is located on the positioning frame. The bottom of the positioning frame has two rollers for abutting against the workpiece, and the two rollers are arranged at intervals.

[0009] Optionally, the positioning assembly also includes a protective shell, which includes a protective ring and a base plate, the two ends of the protective ring are respectively connected to the connecting plate and the base plate to form a sealed cavity, the transition ring and the galvanometer lens are located in the sealed cavity, and the positioning frame passes through the base plate.

[0010] Optionally, a spring is provided on the bottom plate, and two ends of the spring are respectively connected to the transition ring and the bottom plate.

[0011] Optionally, a linear bearing is inserted on the transition ring, a guide rod is slidably inserted in the linear bearing, and two ends of the guide rod are respectively vertically connected to the connecting plate and the bottom plate.

[0012] Optionally, the laser engraving device further includes a dust removal component, wherein the dust removal component includes a first air knife, wherein the first air knife is located on the positioning frame, and the first air knife is arranged toward the roller.

[0013] Optionally, the dust removal assembly further includes an exhaust pipe and a second air knife, the second air knife and the exhaust pipe are both located on the positioning frame, the second air knife is located between the first air knife and the galvanometer lens, and the exhaust pipe is arranged opposite to the second air knife.

[0014] Optionally, the photolithography assembly further includes a collimating isolator, the collimating isolator is fixedly connected to the galvanometer lens, and the collimating isolator is connected to the laser via an optical fiber so as to inject the laser into the galvanometer lens.

[0015] Optionally, the bottom of the positioning frame is an annular frame, a mirror box is inserted into the top of the annular frame to seal the top of the annular frame, and the mirror box is located directly below the galvanometer lens, a drawer is movably inserted in the mirror box, a protective mirror is inserted in the drawer, and the two rollers are located at the bottom of the annular frame.

[0016] Optionally, the connecting plate is provided with an engraving detection module to detect the photolithography effect of the workpiece.

[0017] Optionally, the positioning assembly further includes a manipulator connecting arm for connecting the manipulator, and the manipulator connecting arm is fixedly connected to the connecting plate.

[0018] The technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0019] For a laser engraving device for a vehicle VIN code provided by an embodiment of the present invention, when engraving the VIN code on a workpiece, first, the workpiece is moved to the processing position, and the entire device is installed and fixed by a connecting plate (at this time, the workstation is located below the positioning frame). Then, the transition ring is driven down by the cylinder, and the transition ring drives the positioning frame to descend until the roller on one side of the positioning frame contacts the workpiece first. Next, the cylinder continues to drive the transition ring to descend. Due to the limitation of the roller on one side and the workpiece, and the rotation cooperation of the positioning frame and the transition ring, the positioning frame can be connected to the galvanometer lens and swing together until the roller on the other side contacts the workpiece, completing the fitting of the two rollers. In this process, the lifting and swinging of the positioning frame can drive the galvanometer lens to automatically position, and can adapt to and compensate for the morphological differences when the workpiece moves to the processing position (the galvanometer lens automatically keeps facing the processing surface of the workpiece after swinging, and the engraving spacing is always the spacing between the galvanometer lens and the roller), thereby ensuring the consistency of engraving on multiple workpieces. Finally, the laser is emitted by the laser, and the laser is adjusted by the galvanometer in the galvanometer lens, and the laser passes through the positioning frame and engraves the workpiece.

[0020] That is to say, a laser engraving device for a vehicle VIN code provided by an embodiment of the present invention can realize automatic positioning of the galvanometer lens, and can adapt to the morphological differences existing when the workpiece moves to the processing position, thereby ensuring the consistency of engraving on multiple workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is a schematic diagram of the structure of a laser engraving device for a vehicle VIN code provided by an embodiment of the present invention;

[0022] Figure 2 is a schematic structural diagram of a photolithography assembly provided by an embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of the structure of a positioning component provided by an embodiment of the present invention;

[0024] Figure 4 is a schematic structural diagram of a dust removal assembly provided by an embodiment of the present invention;

[0025] Figure 5 is a cross-sectional view of an annular frame provided by an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the assembly of the detection module provided by an embodiment of the present invention.

[0027] The symbols in the figure mean the following:

[0028] 1. Photolithography component; 11. Laser; 12. Galvanometer lens; 13. Collimation isolator; 14. Field lens; 15. Mounting plate; 16. Connecting ring; 2. Positioning component; 21. Cylinder; 22. Connecting plate; 221. Protective cover; 23. Transition ring; 231. Linear bearing; 232. Guide rod; 233. Connecting shaft; 24. Positioning frame; 241. Ring frame; 2411. Mirror box; 2412. Drawer; 2413. Protective mirror; 2414. Cover plate; 25. Roller; 26. Protective shell; 261. Protective ring; 262. Bottom plate; 2621. Spring; 27. Robot arm connecting arm; 28. Limit bolt; 3. Dust removal component; 31. First air knife; 32. Exhaust pipe; 33. Second air knife; 4. Engraving detection module; 100. Workpiece. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Figure 1 FIG. 1 is a schematic diagram of a laser engraving device for a vehicle VIN code provided by an embodiment of the present invention. Figure 1 As shown, the laser engraving device includes a photolithography component 1 and a positioning component 2.

[0031] Figure 2 is a schematic diagram of the structure of a photolithography assembly provided by an embodiment of the present invention, such as Figure 2 As shown, the photolithography assembly 1 includes a laser (not shown) and a galvanometer lens 12 , and the laser light emitted by the laser is emitted through the galvanometer lens 12 .

[0032] Figure 3 is a schematic diagram of the structure of the positioning component provided by an embodiment of the present invention, such as Figure 3 As shown, the positioning assembly 2 includes a cylinder 21, a connecting plate 22, a transition ring 23 and a positioning frame 24. The cylinder 21 is located on the connecting plate 22. The output shaft of the cylinder 21 is transmission-connected with the transition ring 23 to drive the transition ring 23 to rise and fall. The positioning frame 24 is inserted into the transition ring 23, and the positioning frame 24 and the transition ring 23 are rotationally matched. The galvanometer lens 12 is located on the positioning frame 24. The bottom of the positioning frame 24 has two rollers 25 for abutting against the workpiece 100, and the two rollers 25 are arranged at intervals.

[0033] For a laser engraving device for a vehicle VIN code provided in an embodiment of the present invention, when engraving a VIN code on a workpiece 100, first, move the workpiece 100 to the processing position, and install and fix the entire device through the connecting plate 22 (at this time, the workstation is located below the positioning frame 24). Then, the transition ring 23 is driven to descend by the cylinder 21, and the transition ring 23 will drive the positioning frame 24 to descend until the roller 25 on one side of the positioning frame 24 contacts the workpiece 100 first. Next, the cylinder 21 continues to drive the transition ring 23 to descend. Due to the restriction of the roller 25 on one side and the workpiece 100, and the rotational cooperation of the positioning frame 24 and the transition ring 23, the positioning frame 24 can be connected to the galvanometer lens 12 to swing together until the roller 25 on the other side contacts the workpiece 100, completing the bonding of the two rollers 25. In this process, the lifting and swinging of the positioning frame 24 can drive the galvanometer lens 12 to automatically position, and can adapt to and compensate for the morphological differences when the workpiece 100 moves to the processing position (the galvanometer lens 12 automatically maintains a direct relationship with the processing surface of the workpiece 100 after swinging, and the engraving spacing is always the spacing between the galvanometer lens 12 and the roller 25), thereby ensuring the consistency of engraving on multiple workpieces 100. Finally, the laser 11 is emitted by the laser, and after the laser 11 is adjusted by the galvanometer in the galvanometer lens 12, the laser 11 passes through the positioning frame 24 and engraves the workpiece 100.

[0034] That is to say, the laser engraving device for vehicle VIN codes provided in the embodiment of the present invention can realize automatic positioning of the galvanometer lens 12, and can adapt to the morphological differences existing when the workpiece 100 moves to the processing position, thereby ensuring the consistency of engraving on multiple workpieces 100.

[0035] Exemplarily, a protective cover 221 is provided on the top surface of the connecting plate 22 , which is used to cover and protect the cylinder 21 .

[0036] Exemplarily, a connecting shaft 233 is inserted on the transition ring 23, a bearing is inserted in the positioning frame 24, and the connecting shaft 233 is inserted in the bearing, so that the positioning frame 24 can be freely swung. In addition, the bottom of the positioning frame 24 is an annular structure, which plays a role in protecting the laser.

[0037] Continue to see Figure 1 The positioning assembly 2 also includes a protective shell 26, which includes a protective ring 261 and a bottom plate 262. The two ends of the protective ring 261 are respectively connected to the connecting plate 22 and the bottom plate 262 to form a sealed cavity. The transition ring 23 and the galvanometer lens 12 are located in the sealed cavity, and the positioning frame 24 passes through the bottom plate 262.

[0038] In the above embodiment, the protective shell 26 can cover and protect the transition ring 23 and the galvanometer lens 12, thereby extending their service life.

[0039] Exemplarily, a spring 2621 is provided on the bottom plate 262 , and two ends of the spring 2621 are respectively connected to the transition ring 23 and the bottom plate 262 .

[0040] In the above embodiment, the spring 2621 can play a buffering role for the transition ring 23 during the process of the cylinder 21 raising and lowering the transition ring 23, thereby preventing the transition ring 23 from being raised and lowered too quickly, thereby preventing the positioning frame 24 from being raised and lowered too quickly and causing the roller 25 to hit and crush the workpiece 100.

[0041] Continue to see Figure 3 A linear bearing 231 is inserted on the transition ring 23, and a guide rod 232 is slidably inserted in the linear bearing 231. The two ends of the guide rod 232 are respectively vertically connected to the connecting plate 22 and the bottom plate 262.

[0042] In the above embodiment, the cooperation between the linear bearing 231 and the guide rod 232 can guide the lifting and lowering of the transition ring 23, thereby realizing high-precision linear motion of the transition ring 23 and the positioning frame 24 (when the roller 25 does not contact the workpiece 100).

[0043] Exemplarily, the bottom surface of the connecting plate 22 and the top surface of the bottom plate 262 are both provided with limiting bolts 28, so as to limit the transition ring 23 up and down during the lifting process of the transition ring 23. In addition, the spring 2621 is coaxially sleeved on the guide rod 232.

[0044] Figure 4 is a schematic diagram of the structure of the dust removal assembly provided by an embodiment of the present invention, such as Figure 4 As shown, the laser engraving device further includes a dust removal component 3 , and the dust removal component 3 includes a first air knife 31 . The first air knife 31 is located on the positioning frame 24 , and the first air knife 31 is arranged toward the roller 25 .

[0045] In the above embodiment, the first air knife 31 can blow away the slag generated on the surface of the workpiece 100 due to engraving, thereby preventing the workpiece 100 from being affected by environmental factors during the processing and ensuring the stability of the engraving quality.

[0046] In addition, the dust removal assembly 3 also includes an exhaust pipe 32 and a second air knife 33. The second air knife 33 and the exhaust pipe 32 are both located on the positioning frame 24. The second air knife 33 is located between the first air knife 31 and the galvanometer lens 12, and the exhaust pipe 32 is arranged opposite to the second air knife 33. The second air knife 33 can also blow away the slag to prevent it from contaminating the optical devices such as the galvanometer lens 12, and the gas and slag can be discharged through the exhaust pipe 32.

[0047] Exemplarily, the first air knife 31 and the second air knife 33 are both mounted on the positioning frame 24 through a mounting bracket. The first air knife 31 is arranged obliquely downward to better blow away the slag, while the second air knife 33 is parallel to the galvanometer lens 12 to prevent the slag from contaminating the optical devices such as the galvanometer lens 12.

[0048] It should be noted that the second air knife 33 may also be arranged downward or upward, and the present invention does not limit this.

[0049] Figure 5 is a cross-sectional view of an annular frame provided by an embodiment of the present invention, such as Figure 5 As shown, the bottom of the positioning frame 24 is an annular frame 241, and a mirror box 2411 is inserted on the top of the annular frame 241 to seal the top of the annular frame 241, and the mirror box 2411 is located directly below the galvanometer lens 12, and a drawer 2412 is movably inserted in the mirror box 2411, and a protective mirror 2413 is inserted in the drawer 2412, and two rollers 25 are located at the bottom of the annular frame 241. In addition, an annular cover plate 2414 is placed on the protective mirror 2413 to press the protective mirror 2413. The laser emitted by the galvanometer lens 12 can be emitted through the protective mirror 2413. In other words, the protective mirror 2413 can also prevent the slag generated during the engraving process from damaging the optical devices such as the galvanometer lens 12. When the protective mirror 2413 needs to be replaced, the drawer 2412 is pulled out, the cover plate 2414 is removed, and the protective mirror 2413 is replaced.

[0050] Exemplarily, the first air knife 31 , the exhaust pipe 32 , and the second air knife 33 are all located on the annular frame 241 .

[0051] See again Figure 2 The photolithography assembly 1 further includes a collimating isolator 13 , which is fixedly connected to the galvanometer lens 12 , and the collimating isolator 13 is connected to the laser through an optical fiber to inject the laser into the galvanometer lens 12 .

[0052] In the above embodiment, the collimating isolator 13 can ensure the unidirectional transmission of the laser and prevent the backward transmission light from affecting the normal operation of the laser.

[0053] Exemplarily, the galvanometer lens 12 and the collimating isolator 13 are connected via a mounting plate 15 .

[0054] In addition, the photolithography assembly 1 further includes a field lens 14 , which is fixedly connected to the galvanometer lens 12 to focus the laser light emitted by the galvanometer lens 12 .

[0055] Exemplarily, the galvanometer lens 12 and the field lens 14 are connected via a connecting ring 16 .

[0056] Exemplarily, the field lens 14 is also located in the sealed cavity.

[0057] Figure 6 is a schematic diagram of the assembly of the detection module provided by the embodiment of the present invention, such as Figure 6 As shown, the connecting plate 22 is provided with a marking detection module 4 to detect the photolithography effect of the workpiece 100 .

[0058] Exemplarily, the engraving detection module 4 is installed on the side of the equipment protection ring 261. Specifically, the CCD camera in the detection module is used to take pictures of the engraving area for detection. It can not only detect whether there are quality problems in the engraving results after engraving, but also check whether there is contamination on the surface of the workpiece 100 before engraving.

[0059] In this embodiment, the positioning assembly 2 also includes a manipulator connecting arm 27 for connecting the manipulator. The manipulator connecting arm 27 and the connecting plate 22 are fixedly connected. The manipulator and the connecting plate 22 can be connected through the manipulator connecting arm 27, thereby realizing multi-degree-of-freedom transfer of the device, which is convenient for adapting to various working conditions.

[0060] The laser engraving device provided by the present invention has the following advantages:

[0061] (1) The positioning assembly 2 can not only ensure the accuracy of the laser engraving position, but also automatically adjust the distance and angle difference between the galvanometer lens 12 and the workpiece 100 to meet the positioning consistency problem when batch processing the workpieces 100.

[0062] (2) The dust removal component 3 is used to efficiently blow away the slag and splashes in the designated area, keep the engraving area clean, prevent the equipment from being affected by environmental factors during the processing, and ensure the stability of the engraving quality.

[0063] (3) The fully enclosed structure of the protective shell 26 and the protective cover 221 protects the device while also protecting the laser.

[0064] (4) The manipulator connecting arm 27 can be connected to the end of the robot to ensure that it can reach into the interior of the car from various angles for engraving, which is more flexible and efficient.

[0065] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser engraving device for a vehicle VIN code, characterized in that: The laser engraving device comprises a photoengraving component (1) and a positioning component (2); The photolithography component (1) comprises a laser and a galvanometer lens (12), and the laser light emitted by the laser is emitted through the galvanometer lens (12); The positioning assembly (2) comprises a cylinder (21), a connecting plate (22), a transition ring (23) and a positioning frame (24); the cylinder (21) is located on the connecting plate (22); the output shaft of the cylinder (21) is transmission-connected to the transition ring (23) to drive the transition ring (23) to rise and fall; the positioning frame (24) is inserted into the transition ring (23), and the positioning frame (24) and the transition ring (23) are rotationally matched; the galvanometer lens (12) is located on the positioning frame (24), so that the galvanometer lens (12) automatically keeps facing the processing surface of the workpiece (100) after swinging; the bottom of the positioning frame (24) has two rollers (25) for abutting against the workpiece, and the two rollers (25) are arranged at intervals.

2. A laser engraving device for a vehicle VIN code according to claim 1, characterized in that: The positioning assembly (2) also includes a protective shell (26), the protective shell (26) including a protective ring (261) and a bottom plate (262), the two ends of the protective ring (261) are respectively connected to the connecting plate (22) and the bottom plate (262) to form a sealed cavity, the transition ring (23) and the galvanometer lens (12) are located in the sealed cavity, and the positioning frame (24) passes through the bottom plate (262).

3. A laser engraving device for a vehicle VIN code according to claim 2, characterized in that: The bottom plate (262) is provided with a spring (2621), and two ends of the spring (2621) are respectively connected to the transition ring (23) and the bottom plate (262).

4. The laser engraving device for a vehicle VIN code according to claim 2, characterized in that: A linear bearing (231) is inserted on the transition ring (23), a guide rod (232) is slidably inserted in the linear bearing (231), and two ends of the guide rod (232) are respectively vertically connected to the connecting plate (22) and the bottom plate (262).

5. The laser engraving device for a vehicle VIN code according to claim 1, characterized in that: The laser engraving device further comprises a dust removal component (3), wherein the dust removal component (3) comprises a first air knife (31), wherein the first air knife (31) is located on the positioning frame (24), and the first air knife (31) is arranged toward the roller (25).

6. The laser engraving device for a vehicle VIN code according to claim 5, characterized in that: The dust removal component (3) further comprises an exhaust pipe (32) and a second air knife (33); the second air knife (33) and the exhaust pipe (32) are both located on the positioning frame (24); the second air knife (33) is located between the first air knife (31) and the galvanometer lens (12); and the exhaust pipe (32) and the second air knife (33) are arranged opposite to each other.

7. A laser engraving device for a vehicle VIN code according to any one of claims 1 to 6, characterized in that: The photolithography component (1) further comprises a collimating isolator (13), wherein the collimating isolator (13) is fixedly connected to the galvanometer lens (12), and the collimating isolator (13) is connected to the laser via an optical fiber so as to inject the laser into the galvanometer lens (12).

8. A laser engraving device for a vehicle VIN code according to any one of claims 1 to 6, characterized in that: The bottom of the positioning frame (24) is an annular frame (241), a mirror box (2411) is inserted at the top of the annular frame (241) to seal the top of the annular frame (241), and the mirror box (2411) is located directly below the galvanometer lens (12), a drawer (2412) is movably inserted in the mirror box (2411), a protective mirror (2413) is inserted in the drawer (2412), and the two rollers (25) are located at the bottom of the annular frame (241).

9. A laser engraving device for a vehicle VIN code according to any one of claims 1 to 6, characterized in that: The connecting plate (22) is provided with an engraving detection module (4) for detecting the photolithography effect of the workpiece.

10. A laser engraving device for a vehicle VIN code according to any one of claims 1 to 6, characterized in that: The positioning assembly (2) further comprises a manipulator connecting arm (27) for connecting the manipulator, and the manipulator connecting arm (27) and the connecting plate (22) are fixedly connected.

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