Auxiliary device for repairing etched surface of battery tank mold

Abstract

An auxiliary device for repairing the etched surface of a battery case mold includes a pressing block and a magnetic component for pressing the pressing block firmly onto the mold to be repaired by adsorption. The pressing block has a central hole forming an annular enclosure, the interior of which is a space for accommodating acid-resistant ink and acid. The bottom of the pressing block has a rubber gasket for sealing the gap between the base of the annular enclosure and the mold to be repaired, with a central hole corresponding to the central hole in the rubber gasket. The magnetic component includes a first magnetic base and a second magnetic base. Accommodating grooves are symmetrically arranged on both sides of the pressing block, and the first and second magnetic bases are detachably installed in the accommodating grooves. This invention uses a rubber gasket, pressing block, and magnetic bases to form an enclosure, allowing acid etching to be performed within the enclosure, saving acid consumption and reducing costs.

Description

Technical Field

[0001] This utility model belongs to the field of molds, and specifically relates to an auxiliary device for repairing battery slot molds. Background Technology

[0002] Surface treatments for plastic parts include glossy and textured finishes. For battery cases with textured surfaces, the surface has an uneven texture, providing a certain degree of anti-slip effect, a good feel, and enhancing the product's appearance. During injection molding, occasional scratches may occur on the injection mold surface due to unforeseen factors. For example, during mold setup, increased injection pressure may cause difficulties in demolding, scratching the mold surface; or during robotic arm unloading, the part may occasionally tip over, scratching the mold surface. Scratches on the injection mold surface result in marks on the outer surface of the molded battery cases, leading to poor appearance. This negative impact on the battery case's appearance reduces its mechanical strength. Once assembled into a battery, the case may crack under impact, causing acid leakage and posing a safety risk.

[0003] In this case, the injection mold must be repaired to fix the scratches on the mold surface.

[0004] The traditional repair process for injection molds is as follows: smooth the scratched area → clean the mold → apply protective film → spray acid-resistant ink → acid etching → sandblasting → remove protective film.

[0005] Specific steps are as follows Figure 2 , 3 First, remove the mold part 3 that needs repair from the injection mold and smooth out the scratches 4 with sandpaper; clean the mold part 3, wash away oil stains, debris, etc., and blow dry the mold part 3; apply protective film 16 to all areas of the mold part 3 that do not need etching; then spray acid-resistant ink on the areas 4 that need etching and wait for it to dry; pour acid onto the surface of the mold part 3 for acid etching; after acid etching is completed, clean and dry the mold part 3; sandblast the areas 4 of the mold part 3 that need etching; remove the protective film, and the mold repair is complete.

[0006] Traditional repair methods for scratches on injection mold surfaces require cleaning the mold parts, removing oil, debris, and other contaminants, and then drying them. This typically takes about two hours per mold part. A protective film needs to be applied to the entire mold part, except for the repaired area, adding another two hours to the repair process. Acid etching involves filling the entire mold surface with acid, resulting in significant acid waste. After sandblasting, the protective film needs to be removed, taking about 0.5 hours. These traditional repair methods are cumbersome, time-consuming, wasteful of acid, and inefficient. Summary of the Invention

[0007] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide an auxiliary device for repairing the etched surface of a battery compartment mold. It is convenient to use and quick to repair. The detachable sealed enclosure limits the acid etching range, saves acid consumption, and reduces costs.

[0008] The technical solution of this utility model is: an auxiliary device for repairing the textured surface of a battery slot mold, comprising a pressing block and a magnetic component for pressing the pressing block onto the mold to be repaired by adsorption. The pressing block has an open hole in the middle to form an annular wall, and the interior of the annular wall is a space for accommodating acid-resistant ink and acid. The bottom of the pressing block has a rubber gasket for sealing the gap between the base of the annular wall and the mold to be repaired, and the center of the rubber gasket is a central hole corresponding to the open hole. The magnetic component includes a magnetic base one and a magnetic base two. Accommodating grooves are symmetrically arranged on the left and right sides of the pressing block. Magnetic base one and magnetic base two are detachably installed in the accommodating grooves.

[0009] Both magnetic base one and magnetic base two have NO and OFF indicators and switches.

[0010] The mold to be repaired is covered with a plastic film, and there are gaps on the plastic film corresponding to the repair part of the mold to be repaired. A ring-shaped wall is arranged around the gaps.

[0011] The mold to be repaired is made of steel.

[0012] There are multiple pressure blocks, each with a different size through hole in the center. When using, select a pressure block that matches the size of the notch.

[0013] The receiving groove includes a base plate that fits into the mold to be repaired, upright plates on the front and rear sides of the base plate, and a side plate on the bottom left side, with the side plate fitting into the side of the pressure block.

[0014] The outer side of the upright plate is chamfered. This prevents workers from being scratched by the 90° sharp corner of the upright plate during operation, thus protecting work safety.

[0015] The receiving groove is fixed to both sides of the pressure block with rivets.

[0016] The material of the pressing block is PP plastic; the material of the receiving tank is 45# steel.

[0017] The magnetic base one and magnetic base two have the same magnetic poles.

[0018] This utility model proposes a new repair method and manufactures a new repair device. The process flow is as follows: smooth the scratch location → install the repair auxiliary device → spray acid-resistant ink → acid etching → sandblasting → remove the repair auxiliary device. The advantages of this utility model are:

[0019] 1. When mold parts are removed from the mold, they often accumulate oil, debris, and other contaminants. Without cleaning, the protective film cannot be applied. This invention uses a plastic film, vacuum-sealed to adhere tightly to the mold parts, replacing the need for a dedicated maintenance protective film. This saves time compared to existing methods of cleaning mold parts, applying the protective film, and cleaning the film itself, thus improving production efficiency.

[0020] 2. A wall is formed by rubber gaskets, pressure blocks, and magnetic bases, which allows acid etching to be performed inside the wall, saving acid consumption and reducing costs. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the battery compartment in an injection molded part;

[0022] Figure 2 It is a slider component in the battery compartment injection mold;

[0023] Figure 3 yes Figure 2 A schematic diagram of the structure for applying a protective film;

[0024] Figure 4 This is a schematic diagram illustrating the preparation for using this utility model;

[0025] Figure 5 This is a schematic diagram illustrating the use of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of this utility model;

[0027] Figure 7 This is a structural diagram of the movable fence. Detailed Implementation

[0028] Figure 4-7 This utility model includes a magnetic base 7, a magnetic base 8, a pressure block 9, and a rubber pad 10. The pressure block 9 has a through hole 11 in the center, and the edges on both sides of the pressure block 9 form receiving grooves 12. The magnetic bases 7 and 8 are characterized by an indicator 13 (NO), an indicator 14 (OFF), and a switch 15. The receiving grooves 12 are fixed to both sides of the pressure block 9 with rivets. The pressure block 9 is made of PP plastic; the receiving groove 12 is made of 45# steel. The receiving groove 12 includes a base plate that fits against the mold to be repaired, upright plates on the front and rear sides of the base plate, and a side plate on the bottom left side, the side plates fitting against the sides of the pressure block 9.

[0029] Magnetic base 1 (7) and magnetic base 2 (8) have the same magnetic poles.

[0030] Specific repair process: Scratches 4 on mold part 3 are smoothed with sandpaper. A plastic film 5 is placed over mold part 3, and a notch 6 is trimmed into the plastic film 5 for the corresponding area that needs to be re-etched.

[0031] Place the notch 6 firmly against the surface of the mold part, and then place the rubber gasket 10 and the pressure block 9 in sequence. Place the magnetic base 7 and magnetic base 8 in the receiving groove 12 of the pressure block 9, and rotate the switch 15 of the magnetic base 7 and magnetic base 8. The indicator of the switch 15 will rotate from OFF14 to ON13, and the magnetic base 7 and magnetic base 8 will be magnetized, pressing the pressure block 9 firmly onto the surface of the mold part 3.

[0032] The plastic film 5 is vacuum-sealed using a vacuum sealing machine, so that, except for the notch 6, the plastic film 5 adheres tightly to the surface of the mold part 3 to protect it. Acid-resistant ink is sprayed onto the area of ​​the notch 6, and acid is poured into the notch 6 to etch the mold part 3.

[0033] After acid etching, the mold part 3 is cleaned and dried, and sandblasting is performed at the notch 6. After sandblasting, the switch 15 of the magnetic base 1 7 and magnetic base 2 8 is turned. The indicator of the switch 15 is turned from ON13 to OFF14, and the magnetic base 1 7 and magnetic base 2 8 are demagnetized.

[0034] Remove magnetic base 1 (7) and magnetic base 2 (8), remove pressure block (9) and rubber pad (10), remove plastic film (5), mold repair is complete.

Claims

1. An auxiliary device for repairing a battery cell mold etched surface, characterized in that: The device includes a pressure block (9) and a magnetic component for pressing the pressure block (9) onto the mold to be repaired by adsorption. The pressure block (9) has an opening (11) in the middle to form an annular wall. The inside of the annular wall is a space for accommodating acid-resistant ink and acid. The bottom of the pressure block (9) has a rubber gasket (10) for sealing the gap between the root of the annular wall and the mold to be repaired. The center of the rubber gasket (10) is a central hole corresponding to the opening (11). The magnetic component includes a magnetic base one (7) and a magnetic base two (8). The pressure block (9) has symmetrically arranged receiving grooves (12) on the left and right sides. The magnetic base one (7) and the magnetic base two (8) can be detachably installed in the receiving grooves (12).

2. The auxiliary device for repairing the etched surface of a battery compartment mold according to claim 1, characterized in that: Both the first magnetic base (7) and the second magnetic base (8) have indicators NO (13), OFF (14), and switches (15).

3. The apparatus of claim 1, wherein: The mold to be repaired is covered with a plastic film (5), and there is a notch (6) on the plastic film (5) corresponding to the repair part of the mold to be repaired. A ring wall is arranged around the notch (6).

4. The apparatus of claim 1, wherein: The mold to be repaired is made of steel.

5. The apparatus of claim 1, wherein: There are multiple pressure blocks (9), and the through holes (11) in the middle of each pressure block (9) are of different sizes.

6. The apparatus of claim 1, wherein: The receiving groove includes a base plate that fits into the mold to be repaired, upright plates on the front and rear sides of the base plate, and a side plate on the left side of the bottom. The side plate fits into the side of the pressure block (9).

7. The apparatus of claim 6, wherein: The outer chamfer of the upright plate.

8. The apparatus of claim 1, wherein: The receiving groove (12) is fixed to both sides of the pressure block (9) with rivets.

9. The apparatus of claim 1, wherein: The material of the pressing block (9) is PP plastic; the material of the receiving groove (12) is 45# steel.

10. The apparatus of claim 1, wherein: The magnetic poles of magnetic base one (7) and magnetic base two (8) are the same.

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