A switch chassis face cover cut surface anti-baking paint jig and anti-baking paint method

Abstract

The application discloses a switch case surface cover cut surface anti-baking varnish jig and an anti-baking varnish method. The jig comprises a jig base, an anti-baking varnish adhesive sheet, a back surface jig and an anti-baking varnish adhesive tape. The method comprises the following steps: positioning the anti-baking varnish adhesive sheet and the switch case surface cover, placing the surface cover and pressing; taking out the switch case surface cover, placing the back surface jig on the inner side of the surface cover, and sticking the anti-baking adhesive tape on the inner side of the surface cover; spraying powder on the surface of the switch case surface cover, and fixing the sprayed powder on the surface of the surface cover through baking varnish; baking the anti-baking varnish adhesive sheet, and making the anti-baking varnish adhesive sheet swell and fall off by itself; and taking out the switch case surface cover after cooling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of baking paint, in particular to a switch case cover cut surface baking paint jig and baking paint method. BACKGROUND

[0002] Switches, as one of the core devices in the field of network communication, have been widely used. With the continuous progress of network communication technology, the performance, quality and reliability of the switch case are increasingly improved. As the external packaging of the switch case, the cover of the switch case needs to provide good physical protection, as well as aesthetic appearance and corrosion resistance, which makes the baking paint process the preferred method for external coating of the cover of the switch case. In the manufacturing process of the switch case, the cut surface of the case sometimes needs to have conductive properties to ensure the connection performance and electromagnetic shielding. However, the traditional baking paint process in the application of the cut surface is prone to cause the existence of the baking paint layer, which will hinder the conductive performance and reduce the use performance of the case. To solve this problem, the present patent technology adopts a switch case cover cut surface baking paint jig and baking paint method, which realizes the baking paint prevention of the switch case cover cut surface. The baking paint film can be self-fallen by thermal expansion during the baking process, solving the problems of burrs, flash and paint explosion in the cold falling mode, reducing the subsequent paint scraping process, shortening the production cycle, significantly improving the quality of the switch case cover cut surface, and further ensuring the use performance of the switch.

[0003] The existing baking paint prevention method is mainly manual disassembly, and there is little research on the self-falling of the baking paint film. There are different problems, such as Chinese patent 202223599573X, which is a detachable powder spraying type baking paint jig. After baking and cooling, the baking paint jig needs to be disassembled, which is easy to cause burrs and flash, and the subsequent paint scraping process needs to be added, which undoubtedly increases the processing cost and production cycle; Chinese patent 202223350198.5 designs a jig by pasting high-temperature adhesive tape on the spraying shielding area. This needs to manually disassemble a large number of adhesive tapes in the subsequent process of baking, which cannot be reused, which undoubtedly increases environmental pollution and labor cost. SUMMARY

[0004] To solve the above technical problems, the purpose of the present application is to provide a switch case cover cut surface baking paint jig and baking paint method.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A switch case cover cut surface baking paint jig, comprising:

[0007] A jig base, a baking paint film, a back jig and a baking paint tape.

[0008] Jig base for positioning the anti-baking varnish sheet and the switch cabinet cover;

[0009] Anti-baking varnish sheet for shielding the switch cabinet cover cut surface;

[0010] Back surface jig for receiving the anti-baking varnish sheet after thermal shedding;

[0011] Anti-baking varnish tape for fixing the back surface jig.

[0012] A switch cabinet cover cut surface anti-baking varnish method, comprising:

[0013] Step 10 positions the anti-baking varnish sheet and the switch cabinet cover, places the cover and presses;

[0014] Step 20 takes out the switch cabinet cover, places the back surface jig on the inside of the cover, and pastes the anti-baking varnish tape on the inside edge of the cover;

[0015] Step 30 sprays powder on the surface of the switch cabinet cover, and fixes the sprayed powder on the surface of the cover through baking;

[0016] Step 40 bakes the anti-baking varnish sheet, which is shed after swelling;

[0017] Step 50 takes out the switch cabinet cover after cooling.

[0018] Compared with the prior art, one or more embodiments of the present application can have the following advantages:

[0019] The switch cabinet cover cut surface anti-baking varnish is realized through a special jig, the subsequent production paint scraping process is reduced, and the production cycle is shortened.

[0020] The anti-baking varnish sheet can be automatically shed through thermal swelling during the baking process, solving the problems of burr, flash and paint explosion on the cut surface in the cold shedding mode, significantly improving the quality of the switch cabinet cover cut surface, and further ensuring the performance of the switch.

[0021] The anti-baking varnish sheet can be reused, improving the economy and practicality of the anti-baking varnish sheet, reducing environmental pollution and production cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is an exploded view of the switch cabinet cover cut surface anti-baking varnish jig;

[0023] Figure 2 is a structure diagram of the anti-baking varnish sheet;

[0024] Figure 3 is a cross-sectional view of the switch cabinet cover and the anti-baking varnish sheet assembly;

[0025] Figure 4Is the switch chassis face cover cut surface anti-baking paint method flow chart. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with examples and drawings.

[0027] As Figure 1 shown, is the switch chassis face cover cut surface anti-baking paint tool explosion map, including anti-baking adhesive tape 1, back tool 2, anti-baking paint film 3, switch chassis cover 4, tool base 5; The anti-baking paint film 3 is positioned and pressed into the square hole of the switch chassis face cover 4 by the tool base 5; The back tool 2 is placed inside the switch chassis face cover 4; The back tool 2 and the switch chassis face cover 4 are connected together by the anti-baking adhesive tape 1 from the inside; The anti-baking paint film 3 is self-detached by the back tool 2;

[0028] As Figure 2 and Figure 3 shown, the anti-baking paint film includes anti-baking paint bevel 31, anti-burrs cavity 32 and anti-powder accumulation groove 33; The anti-baking paint bevel is inside the anti-burrs cavity, and the slope is 30°; The anti-baking paint bevel is in interference fit with the switch chassis face cover cut surface, and the interference amount is 0.1mm; The anti-powder accumulation groove depth is 0.5mm, to ensure the sufficiency of powder accumulation; The anti-burrs cavity depth is 1-2mm.

[0029] As Figure 4 shown, is the switch chassis face cover cut surface anti-baking paint method flow chart, including the following steps:

[0030] Step 10 positions the anti-baking paint film and the switch chassis face cover, places the cover and presses;

[0031] Step 20 takes out the switch chassis face cover, places the back tool inside the cover, and pastes the anti-baking adhesive tape on the inside edge of the cover;

[0032] Step 30 sprays powder on the surface of the switch chassis face cover, and fixes the sprayed powder on the surface of the cover by baking;

[0033] Step 40 bakes the anti-baking paint film, which expands and falls off by itself;

[0034] Step 50, after cooling, takes out the switch chassis face cover.

[0035] In the above step 10, the anti-baking paint film and the switch chassis face cover are positioned by the tool base.

[0036] In step 20, the paint film is received by the back tool after heat shedding, and the back tool is fixed by the paint film tape with high temperature resistance.

[0037] In step 30, the paint temperature is 200℃, and the baking time is 30-40 minutes.

[0038] In step 40, the paint film has a special paint protection structure and specific expansion performance; the paint film structure includes a paint protection bevel, a paint protection burr cavity, and a paint protection powder accumulation groove; the paint protection bevel is located inside the paint protection burr cavity with a slope of 30°; the paint protection bevel on the paint film shields the switch cabinet cover cut surface to prevent the switch cabinet cover cut surface from being sprayed and painted; the depth of the paint protection burr cavity is 1-2mm; the depth of the paint protection powder accumulation groove is 0.5mm to ensure the sufficiency of powder accumulation receiving; the paint film material is silica gel (ZY-880) with a hardness of 80D, which can withstand 200℃ continuous baking and meets the EU RoHS standard; the paint film expands and falls off by itself after baking for 10-15 minutes; the film falling temperature is about 110℃.

[0039] Although the embodiments of the present application are disclosed as above, the content is only for the purpose of understanding the present application, and is not intended to limit the present application. Any person skilled in the art of the present application can make any modification and change in the form and details without departing from the spirit and scope of the present application, but the patent protection scope of the present application shall be subject to the scope defined by the appended claims.

Claims

1. A jig for preventing paint baking on the cut surface of a switch chassis cover, characterized in that, Includes jig base, paint-resistant film, back jig, and paint-resistant tape; Fixture base, used to position the anti-painting film and the switch chassis cover; Anti-painting film is used to cover the cut surfaces of the switch chassis cover; The back fixture is used to catch the heat-resistant paint film after it has peeled off. Anti-painting tape, used to secure the back fixture; The anti-baking paint film is positioned by the jig base and pressed into the square hole of the switch chassis cover with an interference fit; the back jig is placed inside the switch chassis cover; and the back jig and the switch chassis cover are connected together from the inside by anti-baking paint tape. The anti-painting film includes an anti-painting bevel, an anti-powder accumulation groove, and an anti-burr cavity; the anti-painting bevel is located inside the anti-burr cavity with a bevel angle of 30°; the anti-painting bevel is interference-fitted with the cut surface of the switch chassis cover with an interference amount of 0.1mm; the anti-powder accumulation groove has a depth of 0.5mm to ensure sufficient powder accumulation; the anti-burr cavity has a depth of 1-2mm. The baking temperature of the anti-baking paint film is 200℃, and the baking time is 30-40 minutes; the anti-baking paint film expands and falls off on its own after 10-15 minutes of baking; the film falls off at a temperature of 110℃.

2. The switch chassis cover cut surface anti-painting fixture according to claim 1, characterized in that, The anti-baking paint film is made of silicone with a hardness of 80D.

3. A method for preventing paint baking on the cut surface of a switch chassis cover, characterized in that, The method includes the following steps: Step 10: Position the anti-baking paint film and the switch chassis cover, place the cover and press it down; Step 20: Remove the front cover of the switch chassis, place the back jig inside the front cover, and attach anti-baking paint tape to the inside edge of the front cover. Step 30: Powder is sprayed onto the surface of the switch chassis cover, and the sprayed powder is fixed to the surface of the cover by baking paint. Step 40: Bake the anti-baking paint film; it will expand and then detach on its own. After cooling in step 50, remove the switch chassis cover; The anti-painting film includes an anti-painting slope, an anti-powder accumulation groove, and an anti-burr cavity; the anti-painting slope is located inside the anti-burr cavity, with a slope of 30°; the anti-painting slope is interference-fitted with the cut surface of the switch chassis cover; the depth of the anti-powder accumulation groove is 0.5mm; the depth of the anti-burr cavity is 1-2mm; In step 40, the baking temperature of the anti-baking paint film is 200℃, and the baking time is 30-40 minutes; the anti-baking paint film expands and falls off on its own after 10-15 minutes of baking; the film falls off at a temperature of 110℃.

4. The method for preventing paint baking on the cut surface of the switch chassis cover according to claim 3, characterized in that, In step 10, the fixture base is positioned and pressed into the square hole of the switch chassis cover by interference fit.

5. The method for preventing paint baking on the cut surface of the switch chassis cover as described in claim 3, characterized in that, The anti-baking paint film is made of silicone with a hardness of 80D.

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