Laser cutting machining jig special for thin net

By designing a special laser cutting fixture for thin mesh, and utilizing components such as a strong magnetic base and titanium connecting plate, the thin mesh can be precisely positioned and clamped. This solves the problems of coating scratches and element contamination during the laser cutting process, and improves the processing accuracy and flatness.

CN223762423UActive Publication Date: 2026-01-06SHANGHAI HESHENG CHUANGHE ENERGY TECH CO LTD
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Patent Information

Application Number
CN202423114587.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2026-01-06
Estimated Expiration
2034-12-17

AI Technical Summary

Technical Problem

In existing technologies, thin mesh processing suffers from problems such as coating clamping shadows, inaccurate positioning, poor adaptability to dimensional changes, low processing accuracy, and element contamination. In particular, it is prone to warping and cutting edge jitter during laser cutting.

Method used

A laser cutting fixture for thin mesh was designed, including an inner cover frame, an outer cover frame, inner and outer bottom frames, a strong magnetic base, positioning pins, and a titanium connecting plate. The combination of hand-tightened screws, positioning holes, and magnetic bases enables precise positioning and clamping of the thin mesh, preventing metal element sputtering. Gaps are provided for heat dissipation and debris discharge during cutting, and a PTFE film is used to prevent scratches on the coating.

Benefits of technology

It achieves high-precision cutting of thin mesh, avoids coating scratches and metal element contamination, improves the flatness and cutting accuracy of the process, and reduces costs and processing difficulty.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of electrolytic baths, and discloses a special laser cutting processing jig for a thin net, which comprises a cover plate inner frame, the top end of the cover plate inner frame is provided with a magnetic base placing groove and a first positioning hole, and the outer side of the cover plate inner frame is provided with a cover plate outer frame. According to the laser cutting machining jig special for the thin net, the strong magnetic base can tightly press and flatten the middle portion of the thin net, through the design of the outer frame boss baffle, the outer frame positioning groove, the inner frame boss baffle and the inner frame positioning groove, it can be ensured that the cover plate outer frame and the bottom outer frame are positioned and installed, meanwhile, the outer frame boss baffle and the inner frame boss baffle can play a role in positioning and placing the thin net, and the machining efficiency is improved. Meanwhile, when laser cutting passes through the titanium connecting plate connecting position, metal elements such as Fe and Al cannot be sputtered to pollute the thin net, through gaps are reserved to facilitate heat dissipation and discharging of cutting chippings during laser cutting, it is guaranteed that a coating on the surface of a product cannot be scratched or fall off due to accidental collision through pasting of a PTFE film, the design is reasonable, and the practicability is high. And the flatness and the machining precision of the product are ensured.
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Description

Technical Field

[0001] This utility model relates to the field of electrolytic cell technology, specifically to a laser cutting fixture for thin mesh. Background Technology

[0002] The anode diffusion layer of a PEM (proton exchange membrane) electrolyzer is an important component of the PEM electrolyzer. Structurally, it is located on the anode side, closely adjacent to the anode catalyst layer. This layer mainly plays the role of gas diffusion and electron conduction. During electrolysis, water needs to be transported to the anode catalyst layer to undergo oxidation reactions to produce oxygen and protons. The diffusion layer allows water, a reactant, to diffuse smoothly into it. Its porous structure is like countless tiny channels, ensuring efficient transport of substances.

[0003] Typically, the anode diffusion layer of a PEM electrolytic cell is composed of stacked thin meshes. The general processing steps for these thin meshes are plating followed by cutting. However, the plating process can leave a black shadow, and inaccurate positioning of the thin mesh can easily leave defects from the previous process, thus affecting the performance of the electrolytic cell. When processing the shape of the thin mesh, cutting with a cutting tool can easily cause element contamination. Moreover, it has poor adaptability to changes in size and is costly. The thin mesh is very soft and easily warped. Without a large cover plate to press it down during placement, the positional deviation will be large. When using non-contact laser cutting, if the thin mesh cannot be completely fixed, the cooling air nozzle of the processing head will blow air, causing the cutting edge to vibrate or shift, and the processing accuracy cannot be guaranteed. Therefore, we propose a special laser cutting jig for thin meshes. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a special laser cutting fixture for thin mesh, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is as follows: a laser cutting fixture for thin mesh includes a cover plate inner frame, a magnetic seat placement groove and a first positioning hole at the top of the cover plate inner frame, a cover plate outer frame on the outside of the cover plate inner frame, a second positioning hole at the top of the cover plate outer frame, a positioning plate between the cover plate outer frame and the cover plate inner frame, a positioning pin on the lower side of the positioning plate, a bottom outer frame on the lower side of the cover plate outer frame, a bottom inner frame on the lower side of the cover plate inner frame, an outer frame boss baffle and an inner frame boss baffle fixedly installed at the top of the bottom inner frame, an outer frame positioning groove and an inner frame positioning groove on the lower side of the cover plate outer frame, a hand-tightening screw between the cover plate outer frame and the bottom outer frame, a steel plate at the lower opening of the bottom inner frame, a titanium connecting plate between the bottom outer frame and the bottom inner frame, a strong magnetic seat placed inside the magnetic seat placement groove, and a calibration line at the top of the cover plate outer frame.

[0006] Preferably, the number of positioning pins is twice that of the positioning plate, the positioning pins are plug-in connected to the first positioning hole and the second positioning hole, the hand-tightening screw passes through the outer frame of the cover plate and extends into the interior of the bottom outer frame, and the hand-tightening screw is threadedly connected to the bottom outer frame.

[0007] Through the above technical solution, the design of hand-tightening screws, positioning pins, positioning plates, first positioning holes and second positioning holes allows the positioning pins at the bottom of the positioning plate to position the inner frame of the cover plate on the inner side of the outer frame of the cover plate. The design of hand-tightening screws makes it easy to install the outer frame of the cover plate on the top of the bottom outer frame.

[0008] Preferably, there are three identical magnetic seat placement slots, which are evenly distributed on the upper side of the inner frame of the cover plate.

[0009] Through the above technical solution, the equally spaced strong magnetic seats can press and flatten the middle part of the thin mesh.

[0010] Preferably, the outer frame boss baffle and the outer frame positioning groove are provided in two identical forms, and the outer frame boss baffle and the outer frame positioning groove are connected by insertion. The inner frame boss baffle and the inner frame positioning groove are provided in two identical forms, and the inner frame boss baffle and the inner frame positioning groove are connected by insertion.

[0011] The above technical solution, through the design of the outer frame boss baffle, outer frame positioning groove, inner frame boss baffle and inner frame positioning groove, can ensure the positioning and installation of the cover plate outer frame and the bottom outer frame. At the same time, the outer frame boss baffle and inner frame boss baffle can play the role of positioning and placing the thin mesh.

[0012] Preferably, four identical titanium connecting plates are provided, and the four titanium connecting plates are symmetrically distributed in two groups on both sides of the bottom inner frame.

[0013] Through the above technical solution, the titanium connecting plate can ensure the connection strength of the bottom inner and outer frames, and at the same time, when the laser cuts through the connection of the titanium connecting plate, it will not cause the sputtering of metal elements such as Fe and Al to contaminate the thin mesh.

[0014] Preferably, a through gap is reserved between the outer frame and the inner frame of the cover plate, a through gap is reserved between the outer frame and the inner frame of the bottom, and a PTFE film is pasted and installed on the lower side of the inner frame of the cover plate.

[0015] The above technical solution ensures that accidental collisions will not cause scratches or peeling of the product surface coating, while the gap facilitates heat dissipation during laser cutting and the removal of cutting debris.

[0016] Compared with the prior art, this utility model provides a special laser cutting fixture for thin mesh, which has the following advantages: The special laser cutting fixture for thin mesh is provided with a cover plate outer frame, a cover plate inner frame, a bottom outer frame, a bottom inner frame, and a strong magnetic base. The strong magnetic base can press and flatten the middle part of the thin mesh between the cover plate inner frame and the bottom inner frame. Through the design of the outer frame boss baffle, outer frame positioning groove, inner frame boss baffle, and inner frame positioning groove, the positioning and installation of the cover plate outer frame and the bottom outer frame can be ensured. Simultaneously, the outer frame boss baffle and the inner frame boss... The baffle serves to position the thin mesh, while the titanium connecting plate ensures the connection strength between the inner and outer frames at the bottom. Furthermore, when laser cutting passes through the connection point of the titanium connecting plate, it prevents the sputtering of metal elements such as Fe and Al, which could contaminate the thin mesh. A through gap is reserved between the outer and inner frames at the bottom to facilitate heat dissipation and the removal of cutting debris during laser cutting. The adhered PTFE film ensures that accidental collisions will not cause scratches or peeling of the coating on the product surface. The overall design is reasonable, positioning is convenient, and it effectively guarantees the flatness and processing accuracy of the product. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation structure of the strong magnetic base of this utility model;

[0020] Figure 4 This is a schematic diagram of the steel plate installation structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the outer frame boss baffle of this utility model.

[0022] The components include: 1. Strong magnetic base; 2. Hand-tightening screw; 3. Positioning plate; 4. Outer frame of cover plate; 5. Inner frame of cover plate; 6. Bottom outer frame; 7. Bottom inner frame; 8. Steel plate; 9. Titanium connecting plate; 10. Magnetic base placement slot; 11. Outer frame boss baffle; 12. Outer frame positioning slot; 13. Inner frame boss baffle; 14. Inner frame positioning slot; 15. Positioning pin; 16. First positioning hole; 17. Second positioning hole; 18. Calibration line. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: As Figure 1-5 As shown, this utility model provides a laser cutting fixture for thin mesh, including an inner cover frame 5. The top of the inner cover frame 5 has a magnetic seat placement groove 10 and a first positioning hole 16. An outer cover frame 4 is provided on the outer side of the inner cover frame 5. The top of the outer cover frame 4 has a second positioning hole 17. A positioning plate 3 is provided between the outer cover frame 4 and the inner cover frame 5. A positioning pin 15 is provided on the lower side of the positioning plate 3. A bottom outer frame 6 is provided on the lower side of the outer cover frame 4, and a bottom... The inner frame 7 and the bottom inner frame 7 are fixedly installed with an outer frame boss baffle 11 and an inner frame boss baffle 13. The lower side of the cover plate outer frame 4 is provided with an outer frame positioning groove 12 and an inner frame positioning groove 14. A hand-tightening screw 2 is provided between the cover plate outer frame 4 and the bottom outer frame 6. A steel plate 8 is provided at the lower opening of the bottom inner frame 7. A titanium connecting plate 9 is provided between the bottom outer frame 6 and the bottom inner frame 7. A strong magnetic seat 1 is placed inside the magnetic seat placement groove 10. A calibration line 18 is provided at the top of the cover plate outer frame 4.

[0025] Specifically, the number of positioning pins 15 is twice that of positioning plate 3. Positioning pins 15 are plug-in connected to the first positioning hole 16 and the second positioning hole 17. Hand-tightening screws 2 pass through the outer frame 4 of the cover plate and extend into the interior of the bottom outer frame 6. Hand-tightening screws 2 are threadedly connected to the bottom outer frame 6. The advantages are that, through the design of hand-tightening screws 2, positioning pins 15, positioning plate 3, first positioning hole 16, and second positioning hole 17, the positioning pins 15 at the bottom of positioning plate 3 can position the inner frame 5 of the cover plate on the inner side of the outer frame 4 of the cover plate. The design of hand-tightening screws 2 facilitates the installation of the outer frame 4 of the cover plate on the top of the bottom outer frame 6.

[0026] Specifically, the magnetic seat placement slots 10 are provided in three identical locations, and the three magnetic seat placement slots 10 are evenly distributed on the upper side of the inner frame 5 of the cover plate. The advantage is that the evenly spaced strong magnetic seats 1 can press and flatten the middle part of the thin mesh.

[0027] Example 2: Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0028] Specifically, the outer frame boss baffle 11 and the outer frame positioning groove 12 are provided in two identical pairs, and the outer frame boss baffle 11 and the outer frame positioning groove 12 are connected by an insertion joint. Similarly, the inner frame boss baffle 13 and the inner frame positioning groove 14 are provided in two identical pairs, and the inner frame boss baffle 13 and the inner frame positioning groove 14 are connected by an insertion joint. The advantage is that the design of the outer frame boss baffle 11, the outer frame positioning groove 12, the inner frame boss baffle 13, and the inner frame positioning groove 14 can ensure the positioning and installation of the cover plate outer frame 4 and the bottom outer frame 6. At the same time, the outer frame boss baffle 11 and the inner frame boss baffle 13 can also serve to position and place the thin mesh.

[0029] Specifically, four identical titanium connecting plates 9 are provided, arranged symmetrically in two groups on both sides of the bottom inner frame 7. The advantage is that the titanium connecting plates 9 ensure the connection strength between the bottom inner and outer frames, and prevent the sputtering of metal elements such as Fe and Al that could contaminate the thin mesh when laser cutting passes through the connection points of the titanium connecting plates.

[0030] Specifically, a through gap is reserved between the outer frame 4 and the inner frame 5 of the cover plate, and a through gap is reserved between the bottom outer frame 6 and the bottom inner frame 7. A PTFE film is attached to the lower side of the inner frame 5 of the cover plate. The advantage is that it ensures that accidental collisions will not cause scratches or peeling of the coating on the product surface, while the gaps facilitate heat dissipation and the discharge of cutting debris during laser cutting.

[0031] Working principle: In use, the operator first removes the hand-tightening screws 2 on the outer frame 4 of the cover plate, then removes the multiple positioning plates 3 and the positioning pins 15 at the bottom of the positioning plates 3, removes the outer frame 4 and the inner frame 5 of the cover plate from the bottom outer frame 6 and the bottom inner frame 7, places the thin mesh between the outer frame boss baffle 11 and the inner frame boss baffle 13, then reinstalls the outer frame 4 and the inner frame 5 of the cover plate at the top of the bottom outer frame 6 and the bottom inner frame 7, then places the strong magnetic base 1 in the magnetic base placement slot 10 and opens the strong magnetic base 1, removes the positioning plates 3 and the positioning pins 15 at the bottom of the positioning plates 3, moves the fixture to the laser cutting equipment, and the laser cutting equipment cuts the thin mesh. After cutting, the above operation is repeated to remove the strong magnetic base 1, remove the inner frame 5 and the outer frame 4 of the cover plate, and then remove the thin mesh.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting jig for thin mesh, comprising a cover plate inner frame (5), characterized in that: The top end of the cover plate inner frame (5) is provided with a magnetic seat placing groove (10) and a first positioning hole (16), the outer side of the cover plate inner frame (5) is provided with a cover plate outer frame (4), the top end of the cover plate outer frame (4) is provided with a second positioning hole (17), a positioning plate (3) is arranged between the cover plate outer frame (4) and the cover plate inner frame (5), the lower side of the positioning plate (3) is provided with a positioning pin (15), the lower side of the cover plate outer frame (4) is provided with a bottom outer frame (6), the lower side of the cover plate inner frame (5) is provided with a bottom inner frame (7), the top end of the bottom inner frame (7) is fixedly installed with an outer frame boss baffle (11) and an inner frame boss baffle (13), the lower side of the cover plate outer frame (4) is provided with an outer frame positioning groove (12) and an inner frame positioning groove (14), a hand screw (2) is arranged between the cover plate outer frame (4) and the bottom outer frame (6), a steel plate (8) is arranged at the opening of the lower part of the bottom inner frame (7), a titanium connecting plate (9) is arranged between the bottom outer frame (6) and the bottom inner frame (7), a strong magnetic magnetic seat (1) is placed in the magnetic seat placing groove (10), and the top end of the cover plate outer frame (4) is provided with a calibration line (18).

2. The laser cutting jig for thin mesh according to claim 1, wherein: The number of the positioning pin (15) is twice that of the positioning plate (3), the positioning pin (15) is in plug-in connection with the first positioning hole (16) and the second positioning hole (17), the hand screw (2) penetrates the cover plate outer frame (4) and extends to the inside of the bottom outer frame (6), and the hand screw (2) is in threaded connection with the bottom outer frame (6).

3. The laser cutting jig for thin mesh according to claim 1, wherein: The magnetic seat placing grooves (10) are all three, and the three magnetic seat placing grooves (10) are distributed at equal intervals on the upper side of the cover plate inner frame (5).

4. The laser cutting jig for thin mesh according to claim 1, wherein: The outer frame boss baffle (11) and the outer frame positioning groove (12) are provided with two in common, the outer frame boss baffle (11) is in plug-in connection with the outer frame positioning groove (12), the inner frame boss baffle (13) and the inner frame positioning groove (14) are provided with two in common, and the inner frame boss baffle (13) is in plug-in connection with the inner frame positioning groove (14).

5. The laser cutting jig for thin mesh according to claim 1, wherein: The titanium connecting plate (9) is provided with four in common, and the four titanium connecting plates (9) are symmetrically distributed in two groups on the two sides of the bottom inner frame (7).

6. The laser cutting jig for thin mesh according to claim 1, wherein: Through gaps are reserved between the cover plate outer frame (4) and the cover plate inner frame (5), through gaps are reserved between the bottom outer frame (6) and the bottom inner frame (7), and a PTFE film is attached and installed on the lower side of the cover plate inner frame (5).