Tool clamp for coating epoxy powder on outer surface of ceramic capacitor

Abstract

The utility model discloses a tool clamp for coating the outer surface of a ceramic capacitor with epoxy powder, and belongs to the technical field of ceramic capacitors. The tool clamp comprises a storage groove and a brass cap. The two brass caps are used for clamping the ceramic capacitor, and the two brass caps are respectively connected with the brass screws at the two ends of the ceramic capacitor; during use, the side walls of the two brass caps are attached to the edges of the upper surfaces of the two sides of the storage groove respectively. And halogen-free epoxy powder is filled in the storage tank. According to the utility model, the epoxy powder can be ensured to be uniformly attached to the outer surface of the ceramic capacitor in the coating process, and the brass screw part needs to be shielded, so that the coating requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to ceramic capacitor technical field relates to a ceramic capacitor outer surface coating epoxy powder with frock clamp. BACKGROUND

[0002] Strontium titanate ceramic capacitor, with its outstanding small size advantage and excellent voltage resistance, occupies a pivotal position in high-voltage power grid system. This kind of capacitor can operate stably under extreme voltage conditions, providing a solid guarantee for the safe and efficient operation of power systems. However, given the extremely high requirements of strontium titanate ceramic material on insulation performance, in order to ensure its long-term reliability in complex and variable power grid environment, it is necessary to implement a layer of fine insulation treatment on its outer surface. In this context, halogen-free epoxy powder encapsulating material has become the first choice for coating materials due to its excellent insulation performance, environmental protection characteristics and good processing adaptability.

[0003] When coating the outer surface of the capacitor with epoxy powder, the quality control of the coating is extremely strict. The ideal coating should exhibit a smooth, smooth and clean appearance without any contamination marks, ensuring that the electrical performance of the capacitor is not affected. At the same time, the coating must be complete and intact, and any defects that may affect the overall quality and durability of the product such as material shortage, gel tumor, delamination, pits, scratches, damage, impurity mixing, peeling or cracking are strictly prohibited. In addition, the adhesion of the coating layer to the surface of the ceramic capacitor must be comprehensive and firm to ensure the continuity of the insulation effect. In particular, the thickness control of the coating layer is also crucial, which needs to ensure that it is not more than 1mm in height below the brass screw end face, so as to avoid unnecessary interference to the assembly and use of the capacitor. However, the existing clamp cannot meet the above requirements at the same time, resulting in poor coating effect.

[0004] Therefore, it is urgent to design a suitable coating clamp to ensure that the epoxy powder is evenly attached to the outer surface of the ceramic capacitor during the coating process, while effectively shielding the brass screw part, thereby meeting the coating requirements. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a frock clamp for coating epoxy powder on the outer surface of a ceramic capacitor to solve the technical problem that the existing clamp cannot meet the requirements of uniform coating on the outer surface of the ceramic capacitor and effectively shield the brass screw part.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a kind of tool fixture for coating epoxy powder on the outer surface of ceramic capacitor, including storage tank and brass cap;Two brass caps are provided for clamping ceramic capacitor, and the two brass caps are respectively connected with brass screw at both ends of ceramic capacitor;When using, the side wall of the two brass caps is respectively attached to the upper surface edge of both sides of storage tank;Halogen-free epoxy powder is contained in storage tank.

[0008] Further, the outer diameter of one end of the brass cap connected with the brass screw is smaller than the outer diameter of the other end, and the outer diameter of the brass cap changes in a stepped manner along its axial direction;When using, the side wall of the end of the brass cap with small outer diameter is attached to the upper surface edge of the storage tank.

[0009] Further, the axial length of the end of the brass cap with small outer diameter is 18mm-22mm.

[0010] Further, the axial length of the end of the brass cap with large outer diameter is 13mm-17mm.

[0011] Further, a threaded hole is formed in one end of the brass cap, and the threaded hole is used for connecting with the brass screw.

[0012] Further, a convex edge is arranged in one end of the brass cap in a circumferential direction, and the convex edge is located in the end of the brass cap with the threaded hole.

[0013] Further, the inner diameter of the convex edge is the sum of the maximum outer diameter of the brass screw and the fitting gap.

[0014] Further, the length of the convex edge is 1.9mm-2.1mm.

[0015] Further, the storage tank is a stainless steel storage tank.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model discloses a kind of tool fixture for coating epoxy powder on the outer surface of ceramic capacitor, when coating, halogen-free epoxy powder encapsulating material is laid in stainless steel tank, ceramic capacitor brass screw is connected with brass cap, then it is placed in the middle of stainless steel tank, and small outer diameter of brass cap is attached to the upper plane of stainless steel tank.Lightly push the large outer diameter of brass cap, so that brass cap and ceramic capacitor move at uniform speed, and a layer of epoxy powder is evenly adhered to the outer surface of capacitor and silver-plated surface, and brass screw part is shielded, that is, one coating is completed.The utility model can guarantee that epoxy powder is evenly adhered to the outer surface of ceramic capacitor during coating process, and brass cap is used to shield brass screw part, to meet the coating requirement. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 The whole structure schematic view of the utility model discloses a ceramic capacitor outer surface epoxy powder coating tool fixture;

[0020] Figure 2 The structure schematic view of the utility model brass cap;

[0021] Figure 3 The structure schematic view of the utility model ceramic capacitor.

[0022] Among them: 1-flat plate capacitor;2-brass cap;3-halogen-free epoxy powder;4-storages groove;5-brass screw;6-coating layer;7-convex edge. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0025] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0026] In the description of the embodiments of the utility model, it needs to be explained that, if the terms "upper", "lower", "horizontal", "inner" and the like indicate the position or location relationship based on the position or location relationship shown in the drawings, or the position or location relationship of the utility model product in common use, it is only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the indicated device or element must have a specific position, structure and operation, therefore it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second" and the like are only used for distinguishing the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the embodiments of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, if the terms "set", "install", "connect", "connect" appear, they should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0029] The utility model will be described in further detail below in combination with the drawings:

[0030] Referring to Figure 1 The utility model embodiment discloses a kind of tool fixtures for coating epoxy powder on the outer surface of ceramic capacitor, including storage tank 4 and brass cap 2;The brass cap 2 is provided with two, for clamping ceramic capacitor, two brass caps 2 are respectively connected with the brass screw 5 at both ends of ceramic capacitor;When using, the side wall of two brass caps 2 is respectively attached to the upper surface edge of both sides of storage tank 4;Storage tank 4 is equipped with halogen-free epoxy powder 3.

[0031] In the embodiment, the structure of the ceramic capacitor is as shown in Figure 3 When coating, halogen-free epoxy powder package material is laid in storage tank 4, brass screw 4 and brass cap 2 are connected, and then the product is placed in the middle of storage tank 4, and the brass cap 2 is gently pushed to drive the ceramic capacitor to move uniformly, so that the coating is completed.

[0032] In one feasible embodiment of the utility model, referring to Figure 2The outer diameter of the brass cap 2 at one end connected with the brass screw 5 is smaller than that at the other end, and the outer diameter of the brass cap 2 changes in steps along the axial direction; in use, the small-diameter end of the brass cap 2 is attached to the upper surface edge of the storage groove 4. The axial length of the small-diameter end of the brass cap 2 is 18mm-22mm, and the axial length of the large-diameter end of the brass cap 2 is 13mm-17mm. The brass cap 2 in the embodiment is composed of a small-diameter part and a large-diameter part; the small-diameter part is used for connecting the brass screw 5, and the large-diameter part is mainly used for a hand-held clamp, facilitating operation, and the large-diameter size is designed to be 30-35mm.

[0033] In a feasible embodiment of the utility model, referring to Figure 2 One end of the brass cap 2 is provided with an internal thread hole, and the internal thread hole is used for connecting with the brass screw 5. The end of the brass cap 2 provided with the internal thread hole is circumferentially provided with a convex edge 7, the inner diameter size of the convex edge 7 is the sum of the maximum outer diameter size of the brass screw 5 and the matching clearance. The length of the convex edge 7 is 1.9mm-2.1mm, facilitating the protection of the outer diameter of the brass screw within 1mm from the end face. The wall thickness of the convex edge 7 of the brass cap 2 is 1mm, that is, the small-diameter size of the brass cap 2 is designed to be the large-diameter size of the brass screw 5+0.4mm matching clearance+2mm thickness of the convex edge 7; the storage groove 4 is preferably a stainless steel storage groove. The stainless steel material has excellent stability, strong corrosion resistance, can resist high acid and alkali environment, and is not easy to rust. This makes the stainless steel storage groove still maintain a good use state in a humid and easily corroded environment, prolonging the service life.

[0034] Embodiment:

[0035] The tool clamp for coating the outer surface of the ceramic capacitor with epoxy powder comprises a stainless steel groove and a brass cap 2, the effective width of the stainless steel groove is designed as the height of the product of the flat plate capacitor 1 + 20 mm, the product is placed in the stainless steel groove, the distance between the flat plate capacitor and the two sides of the stainless steel groove is about 10 mm, which prevents scratching the surface of the coating layer during coating, and the length of the stainless steel groove is about 300 mm; the brass cap 2 is designed according to the size of the brass screw 5; the brass cap 2 is designed with an internal threaded hole for connecting with the brass screw 5; the brass cap 2 is designed with a 2 mm high flange 7 for protecting the outer diameter of the brass screw 5 within 1 mm from the end face; the inner diameter of the flange 7 of the brass cap 2 is the large outer diameter of the brass screw 5 + 0.4 mm clearance; the wall thickness of the flange 7 of the brass cap 2 is 1 mm, that is, the small outer diameter of the brass cap 2 is designed as the large outer diameter of the brass screw 5 + 0.4 mm clearance + 2 mm flange thickness; the height of the small outer diameter part of the brass cap 2 is about 20 mm; the large outer diameter of the brass cap 2 is mainly used for holding the clamp by hand, which is convenient for operation, and the large outer diameter is designed as 30-35 mm; during coating, the halogen-free epoxy powder encapsulating material is laid flat in the stainless steel groove, the brass screw 5 at both ends of the capacitor product is connected with the brass cap 2, then the product is placed in the middle of the stainless steel groove, the small outer diameter of the brass cap 2 is attached to the upper plane of the stainless steel groove, after the assembled product is placed stably in the stainless steel groove, the large outer diameter of the brass cap 2 is gently pushed, so that the brass cap 2 moves forward at a uniform speed with the flat plate capacitor 1, the outer surface of the capacitor and the silver-plated surface are uniformly coated with a layer of epoxy powder, and the brass screw 5 part is shielded, that is, one coating is completed.

[0036] The preferred embodiments of the utility model are only used for limiting the utility model, and the utility model can be changed and varied for the person skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A tooling fixture for coating the outer surface of a ceramic capacitor with epoxy powder, characterized in that, Including storage tank (4) and brass cap (2); The brass cap (2) is provided with two, is used to hold ceramic capacitor, and two brass caps (2) are connected with brass screw (5) at the both ends of ceramic capacitor respectively;When using, the side wall of two brass caps (2) is respectively adhered to the upper surface edge of the two sides of storage tank (4);Storage tank (4) is loaded with halogen-free epoxy powder (3).

2. The jig for coating the outer surface of a ceramic capacitor with an epoxy powder according to claim 1, wherein The outer diameter of the one end of the brass cap (2) connected with the brass screw (5) is less than the outer diameter of the other end, and the outer diameter of the brass cap (2) changes in a stepped manner along the axial direction thereof;When using, the side wall of the one end of the brass cap (2) with small outer diameter is adhered to the upper surface edge of the storage tank (4).

3. The jig for coating the outer surface of a ceramic capacitor with an epoxy powder according to claim 2, wherein The axial length of the one end of the brass cap (2) with small outer diameter is 18mm-22mm.

4. The jig clamp for coating the outer surface of a ceramic capacitor with an epoxy powder according to claim 2, wherein The axial length of the one end of the brass cap (2) with large outer diameter is 13mm-17mm.

5. The jig clamp for coating the outer surface of a ceramic capacitor with an epoxy powder according to claim 1, wherein The one end of the brass cap (2) is provided with an internally threaded hole, and the internally threaded hole is used to be connected with the brass screw (5).

6. The jig clamp for coating the outer surface of a ceramic capacitor with an epoxy powder according to claim 5, wherein The one end of the brass cap (2) is circumferentially provided with a convex edge (7), and the convex edge (7) is located at the one end of the brass cap (2) provided with the internally threaded hole.

7. The jig clamp for coating the outer surface of a ceramic capacitor with an epoxy powder according to claim 6, wherein The inner diameter size of the convex edge (7) is the sum of the maximum outer diameter size of the brass screw (5) and the fitting gap.

8. The jig clamp for coating the outer surface of a ceramic capacitor with an epoxy powder according to claim 6, wherein The length of the convex edge (7) is 1.9mm-2.1mm.

9. The jig clamp for coating the outer surface of a ceramic capacitor with an epoxy powder according to claim 1, wherein The storage tank (4) is a stainless steel storage tank.

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