A method for repairing leakage of CFRP industrial surface insulation mechanical fingers

Abstract

The present invention provides a method for repairing leakage of a surface-insulated mechanical finger for CFRP industrial use. The repair method comprises the following steps: cleaning the leakage portion of the surface-insulated mechanical finger for CFRP industrial use; preheating the portion after cleaning, applying a repair adhesive, and then performing a repair test; performing a corrosion resistance test after the portion meets the repair standard; performing a use environment simulation test after the portion meets the corrosion resistance standard, and completing the repair after the portion meets the use standard. The repair method uses the repair adhesive to repair the leakage portion, and after multiple rounds of standard tests, the scrapped surface-insulated mechanical finger for CFRP industrial use can be put back into use, thereby reducing the product scrap rate, saving costs, and being beneficial to industrial development.

Description

Technical Field

[0001] The invention belongs to the technical field of handling tools for liquid crystal panels and display screens, and particularly relates to a method for repairing leakage of surface-insulated mechanical fingers for CFRP industry. Background Art

[0002] Liquid crystal display panels for computers, mobile phones, etc. are made from a whole piece of liquid crystal glass panel through a series of processes such as polishing, cutting, etc.; usually, robotic arms are used for loading and unloading. With the continuous advancement of technology, the area of ​​​​LCD panels continues to increase, and the requirements for robotic arms are also getting higher and higher.

[0003] CFRP industrial robotic fingers are the preferred handling tools in the LCD panel and display manufacturing process due to their lightweight, high strength, fatigue resistance, and corrosion resistance, which significantly reduce overall weight. However, due to their high performance, high value, and advanced craftsmanship, they must be scrapped to the greatest extent possible to save costs and improve corporate competitiveness.

[0004] During the manufacturing process, CFRP industrial robotic fingers are typically coated with an insulating layer before undergoing molding, polishing, and other steps to form the final product. However, during molding, the upper and lower molds squeeze against each other, causing the insulating layer to bulge at the edges. This damages the insulating layer during subsequent production steps, leading to leakage and ultimately, the product being scrapped. To address this issue, a repair method for CFRP industrial robotic fingers is proposed, which has important implications for industrial production.

[0005] CN107887835A discloses an on-site repair method for a damaged composite insulator shed and a quick-repair adhesive. The method comprises: pre-treating the surface of a repair contact surface of a damaged portion of the composite insulator shed; preparing a composite insulator shed quick-repair adhesive that can be vulcanized at high temperature; pressing the composite insulator shed quick-repair adhesive into the approximate shape of the damaged or missing portion, and causing the quick-repair adhesive to contact the surface of the damaged portion; applying pressure to the damaged portion with the quick-repair adhesive using a tool to fill the damaged portion with the quick-repair adhesive and compact the composite insulator shed quick-repair adhesive, ensuring that the quick-repair adhesive contacting the damaged portion is in close contact with the surface of the damaged portion; and heating the damaged portion at high temperature while simultaneously heating the quick-repair adhesive filled in the damaged portion of the composite insulator shed to cause cross-linking between the material of the original damaged portion and the quick-repair adhesive, thereby activating the material of the original damaged portion and allowing it to participate in the vulcanization treatment of the quick-repair adhesive.

[0006] CN112769075A discloses a method for repairing the insulation protective layer of an overhead line, which includes: step 1) using insulating tape to cover the part to be repaired, wherein the part to be repaired is a cable core; step 2) using a single-component insulating putty to wrap the outer surface of the insulating tape; step 3) using a waterproof tape to wrap the outer side of the single-component insulating putty for protection.

[0007] In summary, how to learn from repair methods in other fields and provide a repair method for leakage of surface-insulated mechanical fingers for CFRP industry has become an urgent problem to be solved. Summary of the Invention

[0008] In response to the problems existing in the prior art, the purpose of the present invention is to provide a method for repairing leakage in CFRP industrial surface-insulated mechanical fingers. The repair method uses repair glue for repair, and after multiple rounds of standard testing, the scrapped CFRP industrial surface-insulated mechanical fingers can be put into use again, thereby reducing the product scrap rate, saving costs, and promoting industrial development.

[0009] To achieve this object, the present invention adopts the following technical solutions:

[0010] The present invention provides a method for repairing leakage of a surface-insulated mechanical finger for CFRP industry, the method comprising the following steps:

[0011] (1) Cleaning the leakage part of the surface insulation mechanical finger of CFRP industry;

[0012] (2) After cleaning, preheat and apply repair glue, and then perform repair inspection;

[0013] (3) Carry out corrosion resistance testing after the repair standards are met;

[0014] (4) After meeting the corrosion resistance standards, conduct a use environment simulation test and complete the repair after meeting the use standards.

[0015] In the present invention, the repair method has a simple process, uses repair glue for repair, and after multiple rounds of standard testing, the CFRP industrial surface insulation mechanical fingers can meet the factory standards and be put into use again. The service life of the repaired mechanical fingers is almost the same as that of the qualified products, which greatly saves resources and brings certain economic benefits.

[0016] The following are preferred technical solutions of the present invention, but are not intended to limit the technical solutions provided by the present invention. Through the following technical solutions, the technical objectives and beneficial effects of the present invention can be better achieved and realized.

[0017] As a preferred technical solution of the present invention, the cleaning in step (1) is performed using a first organic solvent;

[0018] Preferably, the first organic solvent comprises isopropyl alcohol and / or acetone.

[0019] As a preferred technical solution of the present invention, the preheating temperature in step (2) is 30-50°C, for example, 30°C, 32°C, 34°C, 36°C, 38°C, 40°C, 42°C, 44°C, 46°C, 48°C or 50°C, etc., but is not limited to the listed values, and other unlisted values ​​within this numerical range are also applicable.

[0020] In the present invention, a suitable preheating temperature can improve the permeability of the repair glue and enhance the bonding strength. However, the temperature should not be too high, otherwise the viscosity of the glue will be destroyed.

[0021] As a preferred technical solution of the present invention, the repair glue in step (2) includes AA super glue.

[0022] Exemplarily, the AA super glue includes but is not limited to #201AA super glue.

[0023] Preferably, the coating thickness of the repair glue does not exceed 0.2 mm, such as 0.02 mm, 0.04 mm, 0.06 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm or 0.2 mm, and the surface after repair is ensured to be smooth.

[0024] In the present invention, the coating of the repair glue needs to be controlled. If it is too thin, it will not meet the subsequent inspection standards; if it is too thick, it will not only affect the appearance of the product, but its protruding parts will often rub against foreign objects during use, which may easily cause it to fall off and even involve the surrounding insulation layer, resulting in an increase in the damaged area.

[0025] As a preferred technical solution of the present invention, in step (2), the repair test is performed after the applied repair glue solidifies.

[0026] Preferably, when the repair standard is not reached after step (2), the previous repair glue is removed, and then steps (1) and (2) are repeated until the repair standard is reached.

[0027] As a preferred technical solution of the present invention, the repair standard includes: measuring the resistance value of the repaired part, if the resistance value is ≥10 6 Ω, which means reaching the standard.

[0028] As a preferred technical solution of the present invention, the anti-corrosion testing step (3) includes: wiping with a second organic solvent for no less than 10 times, for example, 10 times, 11 times, 12 times, 13 times, 14 times, 15 times, 16 times, 17 times, 18 times, 19 times or 20 times, etc., but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0029] Preferably, the second organic solvent comprises isopropyl alcohol and / or acetone.

[0030] As a preferred technical solution of the present invention, the anti-corrosion standards include: no signs of peeling on the repaired surface, and the resistance value of the repaired part is ≥10 6 Ω, which means reaching the standard.

[0031] As a preferred technical solution of the present invention, the steps of the use environment simulation test include: baking and cooling in sequence, and then high-pressure water washing.

[0032] Preferably, the baking temperature is 70-90°C, for example, 70°C, 72°C, 74°C, 76°C, 78°C, 80°C, 82°C, 84°C, 86°C, 88°C or 90°C, etc., but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0033] Preferably, the baking time is 1-1.5 h, such as 1 h, 1.1 h, 1.2 h, 1.3 h, 1.4 h or 1.5 h, etc., but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0034] Preferably, the water pressure of the flushing is 10-15 MPa, such as 10 MPa, 11 MPa, 12 MPa, 13 MPa, 14 MPa or 15 MPa, etc., but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0035] Preferably, the flushing time is 2-3 minutes, such as 2 minutes, 2.2 minutes, 2.4 minutes, 2.6 minutes, 2.8 minutes or 3 minutes, etc., but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0036] As a preferred technical solution of the present invention, the usage standard includes: after the flushing, there is no sign of peeling and no cracks on the repaired surface, which means that the standard is met.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The repair method of the present invention has a simple process. Repair glue is used to repair the leakage part. After multiple rounds of standard testing, the CFRP industrial surface insulation mechanical fingers can meet the factory standards and be put into use again. The service life of the repaired mechanical fingers is almost the same as that of the qualified products, which greatly saves resources and is conducive to industrial production. DETAILED DESCRIPTION

[0039] To better illustrate the present invention and facilitate understanding of the technical solution of the present invention, the present invention is further described in detail below. However, the following embodiments are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

[0040] The following are typical but non-limiting examples of the present invention:

[0041] Example 1:

[0042] This embodiment provides a method for repairing leakage of a surface-insulated mechanical finger for CFRP industry, the method comprising the following steps:

[0043] (1) Use isopropyl alcohol to clean the leakage part of the CFRP industrial surface insulation mechanical finger;

[0044] (2) After cleaning, preheat at 30°C, then apply #201AA super glue with a thickness of 0.1 mm, and ensure that the surface after repair is flat, and then perform repair inspection, which includes: using a resistance tester to test and measure the resistance value of the repaired part;

[0045] (3) The measured resistance value is 8×10 6 Ω, reach the repair standard, then wipe with a cloth dipped in acetone 15 times;

[0046] (4) The repaired surface showed no signs of peeling, and the resistance value was measured again to be 7.8×10 6 Ω, reaching the corrosion resistance standard, then baked at 80℃ for 1h, and after cooling, rinsed with 10MPa water pressure for 2min. Observe that there is no sign of falling off and no cracks on the repaired surface, reaching the use standard, and the repair is completed.

[0047] Example 2:

[0048] This embodiment provides a method for repairing leakage of a surface-insulated mechanical finger for CFRP industry, the method comprising the following steps:

[0049] (1) Use isopropyl alcohol to clean the leakage part of the CFRP industrial surface insulation mechanical finger;

[0050] (2) After cleaning, preheat at 50°C, then apply #201AA super glue with a thickness of 0.08 mm, and ensure that the surface after repair is flat, and then perform repair inspection, which includes: using a resistance tester to test and measure the resistance value of the repaired part;

[0051] (3) The measured resistance value is 7.5×10 6 Ω, reach the repair standard, then wipe it 10 times with a cloth dipped in acetone;

[0052] (4) The repaired surface showed no signs of peeling, and the resistance value was measured again to be 7.5×10 6 Ω, reaching the corrosion resistance standard, then baked at 70℃ for 1.2h, and after cooling, rinsed with 15MPa water pressure for 2.4min. Observe that there is no sign of falling off and no cracks on the repaired surface, reaching the use standard, and the repair is completed.

[0053] Example 3:

[0054] This embodiment provides a method for repairing leakage of a surface-insulated mechanical finger for CFRP industry, the method comprising the following steps:

[0055] (1) Use isopropyl alcohol to clean the leakage part of the CFRP industrial surface insulation mechanical finger;

[0056] (2) After cleaning, preheat at 40°C, and then apply #201AA super glue with a thickness of 0.16 mm, and ensure that the surface after repair is flat, and then perform repair inspection, which includes: using a resistance tester to test and measure the resistance value of the repaired part;

[0057] (3) The measured resistance value is 10 5 Ω, meet the repair standard, then wipe it 20 times with a cloth dipped in isopropyl alcohol;

[0058] (4) The repaired surface showed no signs of peeling, and the resistance value was measured again and was 9.6×10 6 Ω, reaching the corrosion resistance standard, then baked at 90℃ for 1.3h, cooled and then rinsed with 14MPa water pressure for 3min, and observed that there was no sign of falling off and no cracks on the repaired surface, meeting the use standard and completing the repair.

[0059] Example 4:

[0060] This embodiment provides a method for repairing leakage of a surface-insulated mechanical finger for CFRP industry, the method comprising the following steps:

[0061] (1) Use acetone to clean the leakage part of the CFRP industrial surface insulation mechanical finger;

[0062] (2) After cleaning, preheat at 35°C, and then apply #201AA super glue with a thickness of 0.12 mm, and ensure that the surface after repair is flat, and then perform repair inspection, which includes: using a resistance tester to test and measure the resistance value of the repaired part;

[0063] (3) The measured resistance value is 8.2×10 6 Ω, reach the repair standard, then wipe with a cloth dipped in acetone 18 times;

[0064] (4) The repaired surface showed no signs of peeling, and the resistance value was measured again to be 7.9×10 6 Ω, reaching the corrosion resistance standard, then baked at 70℃ for 1.5h, and after cooling, rinsed with 11MPa water pressure for 2.2min. It was observed that there was no sign of falling off and no cracks on the repaired surface, meeting the use standard and completing the repair.

[0065] Example 5:

[0066] This comparative example provides a method for repairing leakage of surface-insulated mechanical fingers for CFRP industry. The repair method refers to the repair method in Example 2, with the only difference being that the preheating temperature in step (2) is 70°C.

[0067] In this embodiment, the preheating temperature is too high, which causes the viscosity of the glue to be destroyed, and the glue falls off during the inspection.

[0068] Example 6:

[0069] This comparative example provides a method for repairing leakage of a surface-insulated mechanical finger for CFRP industry. The repair method refers to the repair method in Example 1, with the only difference being that the repair glue used in step (2) is 502 glue.

[0070] In this embodiment, when conventional 502 glue is used for repair, the glue solidifies too quickly, resulting in uneven application and poor flexibility, which leads to repair failure and failure to meet the standard for reuse.

[0071] From the above embodiments, it can be seen that the repair method of the present invention has a simple process. Repair glue is used to repair the leakage part. After multiple rounds of standard testing, the CFRP industrial surface insulation mechanical finger can meet the factory standards and be put into use again. The service life of the repaired mechanical finger is almost the same as that of the qualified product, which greatly saves resources and is conducive to industrial production.

[0072] While the present invention is described through the above embodiments to illustrate the detailed methods of the present invention, the present invention is not limited to the above detailed methods, and does not necessarily rely on the above detailed methods to be implemented. Those skilled in the art will appreciate that any improvements to the present invention, equivalent replacements for the operations of the present invention, additions of auxiliary operations, and selections of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

Claims

1. A method for repairing leakage of surface insulation mechanical fingers for CFRP industry, characterized in that: The repair method comprises the following steps: (1) Cleaning the leakage part of the surface insulation mechanical finger of CFRP industry; (2) After cleaning, preheat and apply repair glue, and then perform repair inspection; (3) Carry out corrosion resistance testing after the repair standards are met; (4) After reaching the anti-corrosion standard, conduct a use environment simulation test and complete the repair after reaching the use standard; The repair glue in step (2) includes AA super glue; The coating thickness of the repair glue does not exceed 0.2mm, and the surface after repair is guaranteed to be smooth; The repair standard includes: measuring the resistance value of the repaired part, if the resistance value is ≥10 6 Ω, which means reaching the standard; The anti-corrosion standards include: no signs of peeling on the repaired surface, and the resistance value of the repaired part is ≥10 6 Ω, which means reaching the standard.

2. The repair method according to claim 1, characterized in that: The cleaning in step (1) is performed using a first organic solvent.

3. The repair method according to claim 2, characterized in that: The first organic solvent includes isopropyl alcohol and / or acetone.

4. The repair method according to claim 1, characterized in that: The preheating temperature in step (2) is 30-50°C.

5. The repair method according to claim 1, characterized in that: Step (2) After the applied repair glue solidifies, repair inspection is performed.

6. The repair method according to claim 1, characterized in that: If the repair standard is not reached after step (2), the previous repair glue is removed and the operations of steps (1) and (2) are repeated until the repair standard is reached.

7. The repair method according to claim 1, characterized in that: The anti-corrosion testing step in step (3) includes: wiping with a second organic solvent for no less than 10 times.

8. The repair method according to claim 7, characterized in that: The second organic solvent includes isopropyl alcohol and / or acetone.

9. The repair method according to claim 1, characterized in that: The steps of the use environment simulation test include: baking and cooling in sequence, and then rinsing.

10. The repair method according to claim 9, characterized in that: The baking temperature is 70-90°C.

11. The repair method according to claim 9, characterized in that: The baking time is 1-1.5 hours.

12. The repair method according to claim 9, characterized in that: The water pressure of the flushing is 10-15 MPa.

13. The repair method according to claim 9, characterized in that: The flushing time is 2-3 minutes.

14. The repair method according to claim 9, characterized in that: The usage standards include: after the flushing, if there is no sign of peeling and no cracks on the repaired surface, the standards are met.