KR101453816B1 - Manufacturing of Epoxy, Poly Concrete and other Rigid Polymer Composite Products with Deformed Inside - Google Patents

Abstract

The present invention relates to a manufacturing method for an inner shape of an insulating housing and other molded articles of an indoor / outdoor circuit-breaker / switchgear using a vacuum valve made of a hard polymer composite resin such as EPOXY, The present invention relates to an insulating housing and other molded articles for use in an external circuit breaker / switchgear. In the case of manufacturing an insulated housing used for an indoor / outdoor switchgear / circuit breaker made of a hard polymer composite material as a mold, , But it is difficult to control the quality because of low yield due to difficulty of process control and difficulty in process control.
The most economical and desirable method is to insulate the insulation between the circuit breaker and the switch anode by means of air insulation inside the insulation housing. In this case, in order to make the product small and light, It is necessary to increase the creepage distance by shape, uneven shape and various deformed shapes. For this purpose, silicone, EPDM, NBR, other rubber, etc. having irregularities or various deformed shapes on the outside of the core of the mold inserted into the insulating housing product during product molding After assembling the cover made of soft material, after injecting the resin and molding the product, after removing the core from the product first and removing the remaining cover inside the product, the inside of the product, Manufacture of insulating housings for jade / interior / exterior circuit breakers / switchgear in the form of curved or other deformed shapes It is possible to manufacture an insulated housing for a jade / indoor / outdoor circuit breaker / switchgear using a vacuum valve with high quality reliability and high economic reliability compared to existing products using the same and a breaker / switchgear using the same, It is also possible to manufacture a product having a shape of a mold inside.

Description

Polyesters and other hard polymer composite products having a mold shape inside thereof,

The present invention relates to an insulation housing made of an epoxy, a poly-concrete and a hard polymer composite resin used for jade / interior / exterior switches / breakers and the like, The present invention relates to a manufacturing method for necessary products and an insulating housing and other molded articles used for indoor / outdoor circuit breakers / switches manufactured using the same, and is made of a rubber having an inner shape and an opposite shape required when molding an insulating housing with a mold A manufacturing method in which a soft cover is put on the outside of a mold core to be inserted into a product, and after the molding of the product, the mold core is separated from the product and the soft cover remaining in the product is removed, Insulation housings and copper used for indoor / outdoor circuit breakers / switches with high quality reliability and economy The present invention relates to the manufacture of polymer composite products made of hard resin to be used in other industries that have a release shape therein with.

When manufacturing an insulated housing for an indoor / outdoor switchgear / circuit breaker using a solid insulation method in which a vacuum valve (VI) is inserted into an insulated housing made of a hard polymer composite resin such as epoxy or polyconcrete, The insulation of the inside of the vacuum valve 93 is maintained by the vacuum valve 93 due to the vacuum insulation property inside the valve or by the use of an adhesive (not shown) outside the vacuum valve 114 The insulating housing 111 using the adhesive method in which the vacuum valve and the housing are integrated in such a manner that the resin 112 is injected after applying the silicone or the like and the resin 112 is adhered to the surface of the vacuum valve 114 In some cases, the outside of the vacuum valve is molded with a soft rubber such as silicone or EPDM, and then forcedly assembled inside an insulating housing made of a hard polymer composite such as epoxy. It is used and a method of maintaining the insulation performance of the valve ends.

However, in the case of the adhesive type adhesive method, the defective rate is high because it is difficult to have reliable reliability for the quality due to the lack of the bonding technique and the difficulty in the manufacturing process control. In the case of the prefabricated type, the dimensions of the assembly portion of the housing made of insulating material, There is a disadvantage in that there is a difficulty in quality and yield control due to a problem of dimensional control of the product, and therefore the economical efficiency is low.

Therefore, it is the best method to manufacture the assembly method of air-gap insulation method that does not require the bonding process and simple process and dimension control. However, in case of air insulation, in order to increase the creepage distance to maintain the insulation performance, In order to increase the size of the vacuum valve and the external insulation performance of the vacuum valve, it is necessary to make the vacuum valve to be large. In the case of the switchgear or the circuit breaker using the insulating housing manufactured in this way, problems of installation due to high manufacturing cost and product size It is necessary to increase the internal creepage distance in order to provide a sufficient insulation performance inside the insulation housing in order to manufacture a small and lightweight insulation housing that compensates for the disadvantages associated with it In order to increase the insulation distance, When the curved portion 12 is provided inside the soft housing, the core can not be extracted from the product due to the curved shape of the inner portion of the product. Thus, the insulation housing 11 having the required creepage distance, There is a method of cutting the inside by machining after the molding of the product to form the inside of the housing, a method of screwing the core forming the shape of the inside of the housing, and a method of twisting the core to separate them. In the case of machining, It is difficult to apply the product because the shape of the product is not suitable for cutting and it is difficult to apply the product. When the inside is formed into a screw shape, it is difficult to separate the core from the product by rotating after molding. It must be designed only in the form of a circular thread.

The present invention has been devised to overcome the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing an insulated housing, , 25) is covered with a soft cover (22) having an inner shape and an opposite shape that can be assembled and separated from the core, and after the product is molded, the core is removed from the product and the remaining cover is removed It is an object of the present invention to provide a molded product made of a hard polymer composite material made of an epoxy resin, an epoxy resin, or the like, as well as an insulating housing having an internal structure of various desired shapes as well as a curved shape.

The method of the present invention for solving the above-mentioned problems is characterized in that, as shown in FIG. 1, the insulating housing 11 of the indoor / outdoor circuit breaker / switch, which has a curved shape inside thereof, or other rigid polymer composite resin product (Fig. 12, Fig. 13, Fig. 14), it is possible to manufacture a cover 22 made of a soft material such as silicone, EPDM, After inserting the mold core 31 in which the cover is assembled into the mold 21, the resin in a liquid state is injected into the mold, and after a certain time has elapsed, the resin Once the cores 23, 25 have been molded and then separated from the mold 21, only the cores 23, 25 in this case are separated from the mold and the cover 22 remains inside the product, Characterized in that a product having a desired internal shape is obtained, When the insulating housing 11 manufactured by the method is applied to the design of a jaw / internal / external switchgear / circuit breaker using a vacuum valve, a sufficient insulation distance is ensured due to the bent or deformed shape inside the insulating housing in which the vacuum valve is assembled, If necessary, the outside of the vacuum valve 91 to be assembled inside is molded in a shape having an outer curved shape by using silicone, EPDM, NBR rubber or the like so as to increase the insulation distance. When assembled inside the insulation housing as shown in FIG. 10 , It is possible to design and manufacture a product having a sufficient insulation performance without a process of bonding a vacuum valve and a resin.

According to the method of the present invention, since it is possible to produce a product of a hard polymer composite resin having an internal bending and other deformed shapes, which has been difficult to manufacture by a conventional method, this technology can be applied to manufacture of an insulating housing for indoor / It is easy to fabricate insulated housing with unevenness, curvature and other shape inside, so it can be designed differently from existing ones, thus enhancing product performance and quality reliability, reducing product size, The manufacturing process is simplified and the manufacturing cost is lowered. In addition, it is possible to manufacture a product having a shape difficult to be manufactured by the conventional method when it is applied to other industrial fields.

1 is an exploded perspective view of an indoor circuit breaker manufactured by applying the method of the present invention and an insulating housing drawing
Fig. 2 is a view showing a state of a cover and a core before a core is put on a mold. In Fig. 2, the left side shows a case where the core is integral,
3 is a view showing a state in which a cover is put on a core before a core is inserted into a mold
4 is a view showing a state in which a core in which a cover before a resin injection is assembled is inserted into a metal mold
5 is a view showing a state in which a resin such as EPOXY or poly-concrete is injected into a mold
FIG. 6 shows a state in which the core is separated from the mold after the product is molded. When the core is integrated according to the core structure, the core may be separated from the mold while leaving only the cover inside the product as shown in the left side. In the case of the assembled type, the upper core with the cover assembled as shown on the right side can be left in the product and only the lower core can be separated from the mold
7 is a view showing a state in which a product is separated from a mold;
In the case of the left side view of Fig. 8, in the case of the detachable core, the core is firstly separated from the inside of the product. In the right side view, the core is separated,
9 is a view showing a state in which an outer surface of a vacuum valve is molded with silicone, EPDM, NBR, or other soft rubber in order to increase the creepage distance for improving the insulating ability outside the vacuum valve
Fig. 10 is a view showing an open-circuit breaker of an open-close type vacuum cleaner incorporating a vacuum valve molded with an outer surface inside an insulating housing manufactured by the method of the present invention
11 An integrated insulation housing made of a conventional vacuum valve and a polymer resin such as EPOXY or polyconcrete by an adhesive method
Example of molded products manufactured using the method of the present invention
Fig. 13 Example of a molded article manufactured by the method of the present invention
Fig. 14 Example of a molded article manufactured by the method of the present invention

Hereinafter, an application example to manufacture an insulating housing made of a hard polymer composite resin such as epoxy or poly-concrete having a bent or other deformed shape to be manufactured by the method of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a method of manufacturing a rigid polymer composite resin by molding a rigid polymer composite in a mold with a core formed in a shape opposite to a shape intended to be formed on a core inserted into the product, Is removed from the product first, and then the soft cover is removed from the inside of the product, thereby making it possible to manufacture the inside of the product as a curved shape opposite to the shape of the cover or other deformed shapes.

When a hard housing 11 for a breaker or a switch made of a hard polymer composite resin such as an epoxy or a poly-concrete having a bend in the interior of Fig. 1 is manufactured, the whole body inserted into the mold 21 of Fig. A soft cover 22 of an uneven or irregular shape is formed on the fabricated core 23 or cores 24 and 25 of which a part of the core is separated, made of silicone, EPDM, NBR or other rubber .

The core 31 in which the cover of Fig. 3 is assembled is inserted into the mold 21.

4, when resin is injected into the mold 21 through the resin injection port 41 as shown in FIG. 4, the resin is cured while the resin is injected into the mold as shown in FIG. 5, Is formed.

6, the cores 23 and 24 are separated from each other as shown in the left side of FIG. 6, and the cores 24 and 25, which are manufactured in a separated form, 25 are left inside the product, and the core lower portion 24 is separated from the mold 21.

The separable cores 24, 25 may also separate the upper portion 25 of the separable core and the lower portion of the separable core 24 from the mold, as in the case of an integral core, depending on the core and mold structure.

The product 11 is separated from the mold 21 as shown in Fig.

In the case of the separable core, the core upper portion 25 is first separated from the product as shown on the left side of FIG. 8, then the soft cover 22 remaining on the product is separated from the inside of the product as shown on the right side, When the flexible cover 22 is separated from the product as shown in the right drawing, the manufacture of the insulating housing 11 for the breaker and the breaker having the bending 12 in the interior of Fig.

In addition, when the present method is used, it is possible to manufacture a product made of a hard polymer composite resin having an internal bending or other deformed shape as shown in FIGS. 12, 13, and 14 in addition to the above-described insulating housing.

Also, if you want to design and manufacture the disconnecting part of the breaker / switch for indoor / outdoor use by using the insulation housing manufactured by the above process.

As shown in FIG. 10, the vacuum valve having an outer shape, such as the vacuum valve 91 shown in FIG. 9, is disposed inside the insulating housing 11 manufactured by the method of the present invention to increase the creepage distance for improving the insulation performance outside the vacuum valve, The vacuum valve 114 and the resin 112 manufactured by the conventional method as shown in FIG. 11 are simpler in process than the insulating housing formed integrally by the adhesive 113, It is easy to design and manufacture the disconnecting part of the jade / indoor / outdoor switchgear / breaker which is easy and economical.

11: Insulated housing for switchgear, circuit breaker with internal bending
12: curved surface inside the insulating housing
13: upper conductor
14: Lower conductor
15: Voltage sensor
16: Voltage and current sensors
21: Mold
22: A soft cover having a bent or deformed shape on the outside
23: Integrated core
24: separable core bottom
25: separable core top
31: Mold with soft cover
41: Resin inlet
51: Resin
91: Molded vacuum valve
92: Molding outside the vacuum valve
93: Vacuum valve
94: Fixed side of vacuum valve
95: Fixed contact of vacuum valve
96: Vacuum valve movable contact
97: Moving side of vacuum valve
101: Sliding contact
102: an insulating rod for connecting the movable side of the vacuum valve to the mechanical driving part
103: movable side conductor
111: Insulated housing made integral with vacuum valve
112: Polymer composite resin
113: Adhesive
114: Vacuum valve

Claims (5)

In the case of molding a product made of epoxy, poly-concrete or other hard polymer composite resin having a bent or deformed shape inside, it is difficult to separate the core from the product due to the internal shape, After assembling a soft cover 22 that can be assembled and separated with the core outside the cores 23 and 25, the liquid 23 is injected into the mold and the cores 23, 24 and 25 are first separated from the product And the cover 22 for molding an internal shape is then separated into separate parts by a method of manufacturing an epoxy, poly-concrete and other hard polymer composite resin product delete Wherein the insulation housing (11) is formed by the method of claim 1 having a curved surface (12) inside the insulation housing (11) delete (Fig. 12) in which the both sides are penetrated and the inside has a curved shape (Fig. 12), one side is closed and one side is an open shape, (Fig. 14), a molded article made of a hard polymer composite resin manufactured by the method of claim 1

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