Protective cover for laser lens
By designing a laser lens protective cover with magnetic blocks and breathable filters, the problem of contamination and damage of protective lenses in 3D printing equipment is solved, and more efficient lens protection and air pressure balance is achieved, which simplifies operation and Reduced costs.
Patent Information
- Application Number
- CN202420790462.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2034-04-16
AI Technical Summary
In laser selection melted metal 3D printing equipment, protective lenses are susceptible to metal powder contamination and damage caused by manual operation, and the prior art cannot effectively protect the lenses, affecting their penetration.
A laser lens protective cover that is easy to disassemble is designed, and a magnetic suction block is fixed to the outside of the protective lens, and a ventilation hole and a breathable filter are installed in the cover body to ensure air pressure balance and prevent powder contamination.
Effectively prevent contamination and damage of protective lenses, improve the protective effect of lenses, simplify the disassembly and assembly process, reduce costs, and achieve automatic air pressure balance to avoid powder entry.
Smart Images
Figure CN222113532U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a laser lens protective cover. Background Art
[0002] In the laser selective melting metal 3D printing equipment, the laser body generates laser, which is output through the laser head. The laser acts on the metal powder to melt it and then forms it after cooling. To avoid damage to the laser head, a protective lens is provided under the laser head as a lens. In actual operation, the workpiece is located on the substrate. After printing, the workpiece is taken out of the printing chamber together with the substrate. Before printing the next workpiece, the metal powder remaining in the printing chamber needs to be cleaned. The problem is that the metal powder will drift onto the protective lens, contaminating the lens, and it needs to be wiped manually. The wiping process may cause scratches on the lens, affecting the penetration of the laser. On the other hand, when manually picking up the workpiece, it is also possible to bump against the protective lens, causing damage to the lens; the lens has poor protection and is easily damaged when taking and placing the workpiece or substrate. Summary of the invention
[0003] In order to overcome the shortcomings of the background technology, the utility model provides a laser lens protection cover, the purpose of which is to improve the protection effect of the protective lens located at the top of the printing room, and to design a protective cover that is easy to disassemble so that when manual operation is performed in the printing room, the protective lens can be protected to avoid damage or contamination by metal powder. Another purpose is that in order to protect the lens in time, the temperature of the lens that has just completed printing is high, which can heat the air in the protective cover and expand it, thereby making the cover body easy to fall off, so the cover body also needs to be breathable.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A laser lens protective cover comprises a cover body that can be buckled on the outside of the protective lens of the laser; a plurality of magnetic blocks arranged at intervals are fixedly provided at the edge of the cover body, which are used to adsorb and fix the cover body on the outside of the protective lens through magnetic attraction; a ventilation hole is provided on the cover body, and a breathable filter is embedded in the ventilation hole.
[0006] As a further optimization, the cover body is flat, and its edge is set as a thick part, and the magnetic block is embedded in the thick part.
[0007] As a further optimization, the filter material is filter cotton.
[0008] As a further optimization, the main body of the cover is made of hard transparent plastic material.
[0009] As a further optimization, a protrusion is fixedly provided at the center of the cover body to serve as a gripping portion.
[0010] As a further optimization, the through hole is located at the center of the gripping portion.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] (1) The cover is connected by magnetic attraction, which is easy to disassemble and assemble, reusable and efficient.
[0013] (2) It can not only reduce the bumps on the protective lens, but also prevent the lens from being contaminated by powder.
[0014] (3) It can automatically balance the air pressure inside and outside the cover and prevent metal powder from entering the cover.
[0015] (4) The device has a simple structure, is easy to manufacture and has low cost.
[0016] In short, the device can provide protection for the protective lens located on the top of the printing chamber, reduce the pollution of the protective lens by powder, automatically balance the air pressure, and is easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic cross-sectional structure diagram of Example 1 of the utility model;
[0018] Figure 2 It is a top view of embodiment 1 of the utility model;
[0019] Figure 3 It is a schematic cross-sectional structure diagram of Example 2 of the present utility model.
[0020] The correspondence between the technical features and the reference numerals in the figure is: laser 1; protective lens 11; steel plate frame 12; printing chamber 13; cover body 2; magnetic block 21; vent hole 22; filter 23; thick portion 24; gripping portion 25. DETAILED DESCRIPTION
[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the preferred embodiments of the present invention, rather than all the embodiments. It should be understood by those skilled in the art that these implementation methods are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0022] Example 1: Please refer to Figure 1-2 ;
[0023] The utility model provides the following technical solution: a laser lens protective cover, comprising a cover body 2 that can be buckled on the outside of the protective lens 11 of the laser 1; a plurality of magnetic blocks 21 arranged at intervals are fixedly arranged at the edge of the cover body 2, which are used to adsorb and fix the cover body 2 on the outside of the protective lens 11 through magnetic attraction; a vent hole 22 is provided on the cover body 2, and a breathable filter 23 is embedded in the vent hole 22.
[0024] The working principle includes that the magnetic block 21 is adsorbed on the steel plate frame 12 at the edge of the protective lens 11, fixed by magnetic attraction, and convenient for disassembly. The cover body 2 is connected to the steel plate frame 12 at the edge of the cover body 2 so that the inner side of the cover body 2 does not contact the protective lens 11 to avoid bumps and contamination. If the temperature of the protective lens 11 is high, when the air in the cover body 2 is heated and expanded, the air is exhausted through the vent 22 to reduce the pressure. If the temperature of the protective lens 11 drops, the air is replenished into the cover body 2 through the vent 22 to balance the pressure. During the air replenishment process, the filter 23 is used to block the metal powder from entering the cover body 2 to avoid the contamination of the metal powder and the contamination of the protective lens 11, thereby protecting the protective lens 11. Among them, the shape of the cover body 2 can be set as needed. In this embodiment, a rectangular cover body 2 is selected; the size and number of the vents 22 are also optional. In this embodiment, three vents 22 are selected.
[0025] Exemplarily, the vent hole 22 is opened on the side wall of the cover body 2 .
[0026] In order to save the height space in the printing room 13 and reduce the bumping of the cover body 2 during operation, the cover body 2 is flat, and its edge is set as a thick part 24, and the magnetic attraction block 21 is embedded in the thick part 24.
[0027] Exemplarily, the filter 23 is filter cotton, sponge or gauze.
[0028] In order to facilitate observation of the internal situation of the cover body 2, the main body of the cover body 2 is made of hard transparent plastic material. The hard transparent plastic includes PMMA, PC, PET and other materials. Among them, the magnetic block 21 can be embedded in the plastic after hot melting the plastic.
[0029] In order to facilitate gripping of the cover body 2 , a protrusion is fixedly provided at the center of the cover body 2 to serve as a gripping portion 25 .
[0030] An exemplary method of use is to first grasp the cover 2, preferably the grasping portion 25, align the cover 2 with the protective lens 11, and then lift it up to fix the cover 2 on the steel plate frame 12 through the magnetic block 21. After the manual operation of the printing room 13 is completed, the cover 2 is removed to prepare for the next printing.
[0031] The advantages of this embodiment are:
[0032] (1) The cover body 2 is connected by magnetic attraction, which is convenient for assembly and disassembly, reusable and efficient.
[0033] (2) It can not only reduce the collision of the protective lens 11, but also prevent the lens from being contaminated by powder.
[0034] (3) The air pressure inside and outside the cover body 2 can be automatically balanced, and metal powder can be prevented from entering the cover body 2.
[0035] (4) The device has a simple structure, is easy to manufacture and has low cost.
[0036] In summary, the device can provide protection for the protective lens 11 located at the top of the printing chamber 13, reduce the pollution of the protective lens 11 by powder, automatically balance the air pressure, and is easy to disassemble and assemble.
[0037] Example 2: Please refer to Figure 1-3
[0038] The difference between this embodiment and the first embodiment is that the through hole is located at the center of the gripping portion 25. There is a filter 23 in the through hole. It can be seen that the vent 22 is only used to balance the pressure inside and outside the cover body 2, and the number of the vent 22 is at least one. The gripping portion 25 is thicker and larger, so there is enough space to set the vent 22, and the vent 22 is vertical at this time, so that the metal powder attached to the filter 23 can fall naturally, reducing the possibility of the vent 22 being blocked.
[0039] The parts not described in detail in this utility model are prior art; for ordinary technicians in this field, the technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The scope of this utility model is defined by the attached claims and their equivalents.
Claims
1. A laser lens protective cover, comprising a cover body (2) that can be buckled on the outside of a protective lens (11) of the laser (1); characterized in that: A plurality of magnetic blocks (21) arranged at intervals are fixedly provided at the edge of the cover body (2) for adsorbing and fixing the cover body (2) to the outer side of the protective lens (11) by magnetic attraction; a vent hole (22) is provided on the cover body (2), and a permeable filter (23) is embedded in the vent hole (22).
2. The laser lens protective cover according to claim 1, characterized in that: The cover body (2) is flat, and its edge is provided as a thick portion (24), and the magnetic attraction block (21) is embedded in the thick portion (24).
3. The laser lens protective cover according to claim 1, characterized in that: The filter (23) is filter cotton.
4. The laser lens protective cover according to claim 1, characterized in that: The main body of the cover (2) is made of hard transparent plastic material.
5. The laser lens protective cover according to claim 1, characterized in that: A protrusion is fixedly provided at the center of the cover body (2) and is used as a gripping portion (25).
6. The laser lens protective cover according to claim 5, characterized in that: The vent hole (22) is located at the center of the gripping portion (25).