Lens protection structure and laser marking device
By designing the lens protection structure, using components such as the barrier structure, dust bucket and wind knife, the problem of lens damage caused by sparks and dust splashing during laser marking is solved, and the effect of effectively protecting the lens is achieved.
Patent Information
- Application Number
- CN202421498256.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the laser marking process, sparks and dust splash quickly, directly splashing onto the marking lens, causing damage to the lens.
A lens protection structure is designed, including a protective body, a channel, a barrier structure, a dust bucket, a protective lens, a wind knife and a reference plate. The inner wall of the passage is equipped with a barrier structure to rebound and splash waste. The dust bucket is connected to the air extraction device to remove smoke and dust. The protection lens is used in conjunction with the air knife to further prevent the waste residue from splashing.
Effectively prevent splashing waste from sticking to the lens, protecting the lens from damage, and ensuring the cleanliness of the processing area through the cooperation of dust and air knife.
Smart Images
Figure CN222818185U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of laser processing technology, and more specifically, relates to a lens protection structure and a laser marking device. Background Art
[0002] When laser marking requires deep marking, the sparks and dust generated are particularly large and splash very quickly, causing the sparks and dust to splash directly onto the marking lens and damage the lens. Utility Model Content
[0003] The embodiment of the present application provides a lens protection structure, which can protect a marking lens during marking.
[0004] The technical solution adopted in the embodiment of the present application is: to provide a lens protection structure, including:
[0005] A protective body, wherein a through passage is provided in the protective body, wherein the two ends of the passage are respectively a first opening and a second opening, wherein the first opening faces the lens, and the second opening faces the processing object, and a blocking structure is provided on the inner wall of the passage, wherein the blocking structure has a plurality of stop surfaces, and wherein the stop surfaces form an angle with the through direction of the passage.
[0006] Furthermore, the blocking structure is a sawtooth structure, and the sawtooth structure includes a plurality of convex teeth arranged in sequence along the penetration direction, and a side of the convex teeth facing the processing object is the stop surface.
[0007] Furthermore, the protective body includes a first main board, a first side board, a second main board and a second side board which are connected end to end in sequence, and the blocking structure is provided on the inner wall of one or more of the first main board, the first side board, the second main board and the second side board.
[0008] Furthermore, it also includes a dust hopper, and a dust extraction port is also provided on one side of the protection body. One end of the dust hopper is connected to the dust extraction port, and the other end can be connected to the exhaust device.
[0009] Furthermore, a protective lens is also included. The protective lens is detachably disposed between the first opening and the lens, and there is a gap between the protective lens and the first opening.
[0010] Furthermore, it also includes a wind knife, which is arranged on the protection body and located in the channel.
[0011] Furthermore, the wind knife is located on a side of the channel opposite to the dust extraction port, and the blowing direction of the wind knife is toward the dust extraction port.
[0012] Furthermore, an air inlet is provided on a side of the protection body opposite to the dust extraction port.
[0013] Furthermore, it also includes a reference plate, which is arranged at the second opening, and the reference plate is provided with an opening that matches and docks with the second opening, and the end of the reference plate away from the second opening is also provided with a reference surface that can match and fit with the end face of the processing object.
[0014] An embodiment of the present application further provides a laser marking device, comprising a laser marking head, a lens, and a lens protection structure as described above, wherein the laser marking head, the lens, and the protection lens are arranged in sequence.
[0015] The beneficial effect of the lens protection structure provided in the embodiment of the present application is that: a protection body is provided in the lens protection structure in the embodiment of the present application, and the protection body is located between the lens and the processing object. A blocking structure is provided on the inner wall of the channel. When the laser passes through the channel to process the processing object at the second opening, the blocking structure can rebound the splashing waste residue to prevent the waste residue from passing through the first opening and adhering to the lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0017] Figure 1 A schematic diagram of the three-dimensional structure of the lens protection structure provided in an embodiment of the present application;
[0018] Figure 2 A schematic diagram of the three-dimensional structure of the lens protection structure provided by an embodiment of the present application from another angle;
[0019] Figure 3 A cross-sectional view of a lens protection structure provided in an embodiment of the present application;
[0020] Figure 4 An exploded view of a protection body provided by an embodiment of the present application;
[0021] Figure 5 A schematic diagram of a blocking structure for rebounding waste residue provided in an embodiment of the present application.
[0022] Among them, the reference numerals in the figure are:
[0023] 10. Protective body; 11. Passage; 111. First opening; 112. Second opening; 12. Dust extraction port; 13. Dust extraction hopper; 14. Blocking structure; 141. Protruding teeth; 142. Stop surface; 15. Wind knife; 161. First main board; 162. First side board; 163. Second main board; 164. Second side board; 17. Air inlet;
[0024] 20. Protective lens; 21. Gap;
[0025] 30. Reference plate; 31. Opening; 32. Reference surface;
[0026] 40. Laser marking head; 50. Lens; 60. Processing object. DETAILED DESCRIPTION
[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application 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 application and are not used to limit the present application.
[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0029] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0031] See also Figure 1 and Figure 2 The lens protection structure provided by the embodiment of the present application is now described. The lens protection structure provided by the embodiment of the present application includes a protection body 10.
[0032] The protection body 10 is generally in the shape of a rectangular parallelepiped, and is used to cover the processing part of the processing object 60 so that the marking laser beam passes through the protection body 10 to process the processing object 60 .
[0033] Reference Figure 3 A through channel 11 is provided in the protection body 10, and the two ends of the channel 11 are respectively a first opening 111 and a second opening 112, the first opening 111 faces the lens 50, and the second opening 112 faces the processing object 60, and a blocking structure 14 is provided on the inner wall of the channel 11, and the blocking structure 14 has a plurality of stop surfaces 142, and the stop surfaces 142 form an angle with the through direction of the channel 11.
[0034] The channel 11 is through, and the second opening 112 covers the processing part of the processing object 60. After passing through the lens 50, the laser of the laser marking head 40 passes through the first opening 111 and the second opening 112 of the channel 11 in sequence, and irradiates the processing object 60 for marking. The smoke and waste residue generated during the marking process will be confined in the channel 11. When the splashing waste residue hits the blocking structure 14, it will rebound to the processing object 60 due to the blocking of the blocking structure 14, so as to prevent the waste residue from continuing to move and escaping from the first opening 111 to damage the lens 50.
[0035] Reference Figure 3 , Figure 4 and Figure 5 The blocking structure 14 is a sawtooth structure, which includes a plurality of convex teeth 141 arranged in sequence along the through direction, and the side of the convex teeth 141 facing the processing object 60 is a stop surface 142. That is, the tooth surface of the convex teeth 141 is not parallel to the through direction of the channel 11, and when the waste slag splashes from the second opening 112 to the first opening 111, it will hit the tooth surface of the convex teeth 141, and then rebound and fall back to the second opening 112, thereby preventing the waste slag from continuing to splash out of the first opening 111.
[0036] Reference Figure 1 and Figure 4 The protection body 10 includes a first main board 161, a first side board 162, a second main board 163 and a second side board 164 which are connected end to end in sequence, and a blocking structure 14 is provided on the inner wall of one or more of the first main board 161, the first side board 162, the second main board 163 and the second side board 164. That is, the protection body 10 is surrounded by the first main board 161, the first side board 162, the second main board 163 and the second side board 164 to form a hollow rectangular parallelepiped structure, thereby forming a channel. Among these main boards and side boards, a blocking structure 14 can be provided on one or more side walls, so that the splashing waste residue can be rebounded in multiple directions.
[0037] Reference Figure 1 and Figure 2The lens protection structure of the embodiment of the present application also includes a dust hopper 13. The dust hopper 13 and the protection body 10 are also provided with a dust extraction port 12 on one side. One end of the dust hopper 13 is connected to the dust extraction port 12, and the other end can be connected to the exhaust device. Since the dust hopper 13 is also connected to the exhaust device, it can be exhausted to form an airflow from the first opening 111 to the dust extraction port 12. The smoke and dust in the channel 11 are sucked away with the airflow, and the fine slag mixed in the smoke and dust is also sucked away together to avoid adhering to the lens 50. Specifically, the exhaust device can be an air pump. Through the bucket-shaped structure design of the dust hopper 13, the airflow at the dust extraction port 12 can be increased, so that the exhaust effect is better.
[0038] Reference Figure 1 and Figure 2 The lens protection structure of the embodiment of the present application also includes a protective lens 20, which is detachably disposed between the first opening 111 and the lens 50, and there is a gap 21 between the protective lens 20 and the first opening 111. The protective lens 20 is located between the first opening 111 and the lens 50, and can block the waste residue passing through the first opening 111 to prevent it from adhering to the lens 50. The gap 21 set between the protective lens 20 and the first opening 111 ensures the air flow of the first opening 111 and the air extraction effect of the dust extraction port 12. It can be understood that the cost of the protective lens 20 is very low compared to the lens 50. After too much waste residue adheres to the protective lens 20, a new protective lens 20 can be replaced. Specifically, the protective lens 20 can be detachably fixed by means of screws or buckles.
[0039] Reference Figure 3 and Figure 4 The lens protection structure of the embodiment of the present application further includes an air knife 15, which is disposed on the protection body 10 and located in the channel. The air knife 15 can produce airflow to form an air curtain to block the smoke and dust residues generated during the processing and prevent the smoke and dust residues from flying out of the first opening 111. Furthermore, the air knife 15 is located on the side opposite to the dust extraction port 12 in the channel, and the blowing direction of the air knife 15 is toward the dust extraction port 12, that is, by setting the blowing direction of the air knife 15 to be toward the dust extraction port 12, the airflow generated by the air knife 15 can directly blow the smoke and dust residues generated during the processing toward the dust extraction port 12, and cooperate with the exhaust of the exhaust device connected to the dust extraction port 12 to quickly extract these smoke and dust residues.
[0040] Reference Figure 1 and Figure 3 An air inlet 17 is also provided on the side of the protective body 10 opposite to the dust extraction port 12 to further increase the air intake volume and ensure the normal operation of the air extraction function.
[0041] Reference Figure 1 and Figure 3The lens protection structure of the embodiment of the present application further includes a reference plate 30, which is arranged at the second opening 112. The reference plate 30 is provided with an opening 31 that matches and docks with the second opening 112, and the end of the reference plate 30 that is away from the second opening 112 is also provided with a reference surface 32 that can match and fit with the end surface of the processing object 60. During processing, the reference surface 32 of the reference plate 30 can fit the end surface of the processing object 60 to avoid air leakage, and then the processing laser is hit on the processing object 60 through the lens 50, the protective lens 20, the first opening 111, the second opening 112 and the opening 31. Since the reference plate 30 fits the end surface of the workpiece, when exhausting air, only the first opening 111 and the air inlet 17 are inlet, and the generated smoke and waste residue will not leak from the reference plate 30.
[0042] The embodiment of the present application further provides a laser marking device, comprising a laser marking head 40, a lens 50 and a lens protection structure as described above, wherein the laser marking head 40, the lens 50 and the protective lens 20 are arranged in sequence.
[0043] Since the laser marking device of the embodiment of the present application includes the lens protection structure in any of the above embodiments, it has the beneficial effects brought by the lens protection structure in any of the above embodiments, which will not be described in detail here.
[0044] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A lens protection structure, characterized in that: include: A protective body, wherein a through passage is provided in the protective body, wherein the two ends of the passage are respectively a first opening and a second opening, wherein the first opening faces the lens, and the second opening faces the processing object, and a blocking structure is provided on the inner wall of the passage, wherein the blocking structure has a plurality of stop surfaces, and wherein the stop surfaces form an angle with the through direction of the passage.
2. The lens protection structure according to claim 1, characterized in that: The blocking structure is a sawtooth structure, and the sawtooth structure includes a plurality of convex teeth arranged in sequence along the penetration direction, and a side of the convex teeth facing the processing object is the stop surface.
3. The lens protection structure according to claim 1, characterized in that: The protective body includes a first main board, a first side board, a second main board and a second side board which are connected end to end in sequence, and the blocking structure is provided on the inner wall of one or more of the first main board, the first side board, the second main board and the second side board.
4. The lens protection structure according to claim 1, characterized in that: It also includes a dust hopper, and a dust extraction port is provided on one side of the protection body. One end of the dust hopper is connected to the dust extraction port, and the other end can be connected to the air extraction device.
5. The lens protection structure according to claim 4, characterized in that: A protective lens is also included. The protective lens is detachably disposed between the first opening and the lens, and a gap is provided between the protective lens and the first opening.
6. The lens protection structure according to claim 4, characterized in that: It also includes a wind knife, which is arranged on the protection body and located in the channel.
7. The lens protection structure according to claim 6, characterized in that: The wind knife is located at a side of the channel opposite to the dust extraction port, and the blowing direction of the wind knife is toward the dust extraction port.
8. The lens protection structure according to claim 4, characterized in that: An air inlet is also provided on a side of the protection body opposite to the dust extraction port.
9. The lens protection structure according to claim 1, characterized in that: It also includes a reference plate, which is arranged at the second opening. The reference plate is provided with an opening that matches and docks with the second opening. The end of the reference plate away from the second opening is also provided with a reference surface that can match and fit with the end surface of the processing object.
10. A laser marking device, characterized in that: It comprises a laser marking head, a lens and a lens protection structure as claimed in any one of claims 1 to 9, wherein the laser marking head, the lens and the protection lens are arranged in sequence.