A coating device for processing a capacitor film

By designing a coating device for capacitor film processing, and employing a double-sided coating roller and a heating mechanism, simultaneous coating of both sides of the capacitor film was achieved, solving the problems of low coating efficiency and poor quality in the existing technology, and improving coating efficiency and quality.

CN224400236UActive Publication Date: 2026-06-23WENLING HUAHANG ELECTRONICS TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENLING HUAHANG ELECTRONICS TECH CO LTD
Filing Date
2025-07-17
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing capacitor film coating equipment can only coat one side of the capacitor film, resulting in low coating efficiency and poor coating quality.

Method used

A coating apparatus for capacitor film processing was designed, comprising a main body and a heating mechanism. The main body includes a box, a tube, multiple rollers and an evaporation mechanism. The capacitor film is coated on both sides simultaneously through the first and second coating rollers, and preheated and baked under the action of the heating mechanism to improve stability and quality.

Benefits of technology

Simultaneous double-sided coating of capacitor film was achieved, improving coating efficiency. Preheating and baking were used to remove air bubbles in the coating, ensuring the dimensional and shape stability of the coating and improving coating quality.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a kind of film plating devices for capacitor film processing, include: main body mechanism and heating mechanism, main body mechanism includes box, fixed in the one side of box and with the tubular body of box inner cavity intercommunication, first guide roller is rotatably installed on the opposite inner wall of tubular body, first film plating roller is installed on the inner wall of box, second film plating roller is installed on the inner wall of box and located above first film plating roller, second guide roller and third guide roller are rotatably installed on the inner wall of box, and two evaporation mechanisms are installed on the inner wall of box and respectively located below first film plating roller and second film plating roller, box forms a closed environment, it is convenient to carry out film plating operation to capacitor film, tubular body is used to install first guide roller, first guide roller is used to introduce capacitor film to box inner cavity, this film plating device for capacitor film processing has the advantages of double-sided film plating and high film plating quality.
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Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, specifically a coating equipment for capacitor film processing. Background Technology

[0002] Capacitor film, also known as film capacitor, is a high-performance capacitor with the following main characteristics: non-polarity, high insulation resistance, excellent frequency characteristics (wide frequency response), low dielectric loss, small size and large capacitance. In the manufacturing process of capacitor film, a coating device is required for coating treatment.

[0003] The existing capacitor film coating equipment has the following drawbacks during use: it can only coat one side of the capacitor film at a time, resulting in low coating efficiency and poor coating quality. Therefore, there is room for improvement. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a coating device for capacitor film processing, comprising: a main body and a heating mechanism. The main body includes a box, a tube fixed to one side of the box and communicating with the inner cavity of the box, a first guide roller rotatably mounted on the inner wall of the tube, a first coating roller mounted on the inner wall of the box, a second coating roller mounted on the inner wall of the box and located above the first coating roller, a second guide roller and a third guide roller rotatably mounted on the inner wall of the box, and two evaporation mechanisms mounted on the inner wall of the box and located below the first coating roller and the second coating roller, respectively.

[0006] The heating mechanism includes a first heating element installed on the top wall of the tube body, a second heating element installed on the inner wall of the box body and located between the first coating roller and the second coating roller, and a third heating element installed on the top wall of the box body.

[0007] In a preferred embodiment, the present invention may be further configured such that the first coating roller includes a first rubber roller rotatably mounted on the inner wall of the housing and two first guide rollers mounted on the housing and symmetrically located on both sides of the first rubber roller.

[0008] In a preferred embodiment, the present invention may be further configured such that the second coating roller includes a second rubber roller rotatably mounted on the inner wall of the housing and two second guide rollers mounted on the housing and symmetrically located on both sides of the second rubber roller.

[0009] In a preferred embodiment, the present invention can be further configured such that: a placement rack is fixed on both sides of the box.

[0010] In a preferred embodiment, the present invention can be further configured such that: the capacitor film is fed into the tube from one side, passes in sequence around the first guide roller, the first guide roller to the right of the first rubber roller, the first rubber roller, the first guide roller to the left of the first rubber roller, the second guide roller to the left of the second rubber roller, the second rubber roller, the second guide roller to the right of the second rubber roller, the second guide roller and the third guide roller, and is discharged from the other side of the box.

[0011] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0012] 1. In this utility model, a first coating roller and a second coating roller are installed on the inner wall of the box, and an evaporation mechanism is provided below both the first coating roller and the second coating roller. The capacitor film passes around the first coating roller and then passes around the second coating roller. With the above arrangement, both sides of the capacitor film can be coated at the same time, which effectively improves the coating efficiency of the capacitor film and increases its practical performance.

[0013] 2. In this utility model, a tube is fixed on one side of the housing, and a first guide roller is installed on the inner wall of the tube to introduce the capacitor film into the first coating roller. At the same time, a first heating element is installed on the inner top wall of the tube to preheat the capacitor film before coating, thereby improving the stability of the capacitor film coating process. In addition, a second heating element and a third heating element are installed on the inner wall of the housing to bake the coating on the surface of the capacitor film after each coating is completed on both sides, removing air bubbles in the coating, eliminating internal stress in the coating, ensuring the stability of the size and shape of the coating, and ensuring the stability of the capacitor film coating quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0016] Figure 3 This is a cross-sectional view of the present invention.

[0017] Figure label:

[0018] 100. Main body; 110. Box; 111. Placement rack; 120. Tube; 130. First guide roller; 140. First coating roller; 141. First adhesive roller; 142. First guide roller; 150. Second coating roller; 151. Second adhesive roller; 152. Second guide roller; 160. Second guide roller; 170. Third guide roller; 180. Evaporation mechanism;

[0019] 200, Heating mechanism; 210, First heating element; 220, Second heating element; 230, Third heating element. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0021] Some embodiments of this utility model are described below with reference to the accompanying drawings. Example

[0022] Combination Figure 1-3 As shown, this embodiment provides a coating apparatus for capacitor film processing, including: a main body 100 and a heating mechanism.

[0023] The main structure 100 includes a housing 110, a tube 120 fixed to one side of the housing 110 and communicating with the inner cavity of the housing 110, a first guide roller 130 rotatably mounted on the inner wall of the tube 120, a first coating roller 140 mounted on the inner wall of the housing 110, a second coating roller 150 mounted on the inner wall of the housing 110 and located above the first coating roller 140, a second guide roller 152 and a third guide roller rotatably mounted on the inner wall of the housing 110, and two evaporation mechanisms 180 mounted on the inner wall of the housing 110 and located below the first coating roller 140 and the second coating roller 150, respectively.

[0024] The housing 110 forms a closed environment, which facilitates the coating operation of the capacitor film. The tube 120 is used to install the first guide roller 130, which is used to introduce the capacitor film into the inner cavity of the housing 110.

[0025] In addition, placement racks 111 are symmetrically fixed on both sides of the housing 110 for placing the winding rollers of the capacitor film.

[0026] The first coating roller 140 is used to coat one side of the capacitor film. It includes a first rubber roller 141 rotatably mounted on the inner wall of the housing 110 and two first guide rollers 142 mounted on the housing 110 and symmetrically located on both sides of the first rubber roller 141. The capacitor film is fed in from one side of the tube 120, passes around the first guide roller 130, and then passes around the first guide roller 142 on the right side of the first rubber roller 141, the first rubber roller 141, and the first guide roller 142 on the left side of the first rubber roller 141 in sequence, so that one side of the capacitor film is close to the evaporation device, which facilitates coating one side of the capacitor film.

[0027] The second coating roller 150 is used to coat the other side of the capacitor film. It includes a second rubber roller 151 rotatably mounted on the inner wall of the housing 110 and two second guide rollers 152 mounted on the housing 110 and symmetrically located on both sides of the second rubber roller 151. After the capacitor film is fed out by the first guide roller 142 on the left side of the first rubber roller 141, it passes by the second guide roller 152 on the left side of the second rubber roller 151, the second rubber roller 151, and the second guide roller 152 on the right side of the second rubber roller 151 in sequence, so that the other side of the capacitor film is close to the evaporation device, which facilitates coating the other side of the capacitor film.

[0028] The evaporation device consists of an evaporation boat and a cylinder, and is used for coating capacitor films.

[0029] The second guide roller 160 and the third guide roller 170 are both used to guide the capacitor film after coating out of the housing 110.

[0030] The heating mechanism 200 is used to preheat and bake the capacitor film, including a first heating element 210 installed on the inner top wall of the tube 120, a second heating element 220 installed on the inner wall of the box 110 and located between the first coating roller 140 and the second coating roller 150, and a third heating element 230 installed on the inner top wall of the box 110.

[0031] The first heating element 210 is located inside the tank and is set up with an array of electric heating tubes. It can preheat the capacitor film when the capacitor film enters the box 110 for coating, thereby improving the stability of the capacitor film coating process.

[0032] The second heating element 220 is vertically arranged between the first coating roller 140 and the second coating roller 150. It can bake the surface of the capacitor film after coating on one side of the capacitor film. The second heating element 220 is fixed on the inner top wall of the housing 110. It can bake the other side of the capacitor film after coating on the other side of the capacitor film. The combination of the two can remove air bubbles in the coating, eliminate internal stress in the coating, and ensure the stability of the size and shape of the coating.

[0033] The working principle and usage process of this utility model are as follows: In use, the capacitor film is inserted into the housing 110 from one side of the tube 120, along the first guide roller 130, and then sequentially passes around the first guide roller 142 to the right of the first rubber roller 141, the first rubber roller 141, the first guide roller 142 to the left of the first rubber roller 141, the second guide roller 152 to the left of the second rubber roller 151, the second rubber roller 151, the second guide roller 152 to the right of the second rubber roller 151, the second guide roller 160, and the third guide roller 170, and is then discharged from the other side of the housing 110. In the body 110, during the coating process, the evaporation mechanism 180 below the first rubber roller 141 coats one side of the capacitor film, and the evaporation mechanism 180 below the second rubber roller 151 coats the other side of the capacitor film, achieving simultaneous coating on both sides of the capacitor film. In addition, the first heating element 210 can preheat the capacitor film entering the housing 110 to improve the adhesion and stability of the coating. The second heating element 220 and the third heating element 230 can bake the coating on the surface of the capacitor film to remove air bubbles in the coating and eliminate internal stress in the coating.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A coating apparatus for capacitor film processing, comprising: The main body (100) and heating mechanism are characterized in that the main body (100) includes a box (110), a tube (120) fixed to one side of the box (110) and communicating with the inner cavity of the box (110), a first guide roller (130) rotatably installed on the inner wall of the tube (120), a first coating roller (140) installed on the inner wall of the box (110), a second coating roller (150) installed on the inner wall of the box (110) and located above the first coating roller (140), a second guide roller (152) and a third guide roller rotatably installed on the inner wall of the box (110), and two evaporation mechanisms (180) installed on the inner wall of the box (110) and located below the first coating roller (140) and the second coating roller (150), respectively. The heating mechanism (200) includes a first heating element (210) installed on the inner top wall of the tube (120), a second heating element (220) installed on the inner wall of the box (110) and located between the first coating roller (140) and the second coating roller (150), and a third heating element (230) installed on the inner top wall of the box (110).

2. The coating apparatus for capacitor film processing according to claim 1, characterized in that, The first coating roller (140) includes a first rubber roller (141) rotatably mounted on the inner wall of the housing (110) and two first guide rollers (142) mounted on the housing (110) and symmetrically located on both sides of the first rubber roller (141).

3. The coating apparatus for capacitor film processing according to claim 1, characterized in that, The second coating roller (150) includes a second rubber roller (151) rotatably mounted on the inner wall of the housing (110) and two second guide rollers (152) mounted on the housing (110) and symmetrically located on both sides of the second rubber roller (151).

4. The coating apparatus for capacitor film processing according to claim 1, characterized in that, The box (110) has a placement rack (111) fixed on both sides.

5. The coating apparatus for capacitor film processing according to claim 1, characterized in that, The capacitor film is fed into the tube (120) from one side, passes in sequence around the first guide roller (130), the first guide roller (142) to the right of the first rubber roller (141), the first rubber roller (141), the first guide roller (142) to the left of the first rubber roller (141), the second guide roller (152) to the left of the second rubber roller (151), the second rubber roller (151), the second guide roller (152) to the right of the second rubber roller (151), the second guide roller (160) and the third guide roller (170), and is sent out of the box (110) from the other side of the box (110).