JPS59214209A - Manufacture of transformer - Google Patents

Abstract

PURPOSE:To eliminate the process of dipping in varnish and baking by introducing insulating varnish which is cured at the tempeature below 100 deg.C as the insulating varnish applied to a wire and a laminated core. CONSTITUTION:A wire is taken up on a bobbin from a wire supplier. Insulating varnish is applied to the supplied wire between the wire supplier and the bobbin. A coil bobbin wound with the wire is formed. Then laminated core composing members are coated with the insulation varnish and assembled with the coil bobbin. The composed laminated core is cured. The insulation varnish is composed of synthetic resin cured at the temperature below 100 deg.C. Polyurethane resin, epoxy resin, polyester resin, polyimide resin, phenol resin, xylene resin, polybutadiene resin and their regenerated substances are used for the insulating varnish.

Description

[Detailed description of the invention] The present invention is inspired by a drastic manufacturing method of a transformer.

Conventionally, the glue method for transformers involves winding the conductor from a conductor supply device onto a bobbin, trapping the fill bobbin around which the conductor has been wound, and attaching it to a laminated iron core made of, for example, E-type and 1-type life steel plates. After incorporating the forming members and forming a laminated iron core to form a transformer, this is immersed in insulating varnish, taken out to remove drippings, heated to harden (with a 1 mark), cooled, and inspected. The product is a transformer.

The varnish baking process in the transformer manufacturing method described above is used to prevent insulation defects due to the crazing phenomenon that occurs when VCRIi wire is wound around a bobbin during transformer manufacturing, and to prevent gaps that occur between the scrap iron and 6 forming members that form the laminated core. This is done in order to prevent poor heat dissipation and the occurrence of undulating phenomena caused by the varnishing process. It is necessary to prolong the pot life and replenish the loss of varnish due to varnish adhesion to the sea transformer, and to harden and bake the varnish at 100-130℃
◇This heat treatment not only increases the cost due to equipment costs, electricity consumption costs, etc., but also causes the mixture of organic substances and air that vaporizes due to heating to explode. There is a risk of causing

The 16 scholars achieved the present invention by researching an economical method of manufacturing a transformer that simplifies the process by omitting the varnish dipping and baking process that has the drawbacks mentioned above.

The present invention provides a method for manufacturing a transformer that uses a varnish (resin liquid) that has a short pot life and hardens at a temperature of %100°C or less to prevent insulation defects, undulation, and good heat dissipation. The purpose is to present the following information.

In the transformer manufacturing method, the present invention applies a resin liquid (insulating varnish) that hardens at a temperature of 100°C or less, preferably 20 to 40°C, to the conducting wire before winding the conducting wire from one supply source onto a bobbin. Coat C1 and wind it onto a bobbin (
Before forming a laminated core on a coil bobbin that has not been subjected to Di conversion treatment or has been subjected to hardening treatment, and then the electric wire is wound as an axis, the member for forming the laminated core (stratified core forming member) is subjected to the above-mentioned treatment. This method of manufacturing a transformer is characterized in that a resin liquid is deposited, and this is incorporated into a bobbin to form a laminated iron core, and then this is subjected to a hardening treatment.

The laminated core forming member in the present invention is a quiso steel plate.

Refers to a member made of silicon steel plate, etc., on which a laminated core of E-type, engineering-type, U-type, or other appropriate shape is formed in layers; Resin liquids (insulating varnish) that harden at humidity below 100°C include polyurethane horse chestnut resin, epoxy resin, and polyester resin.

Polyimide resin, phenolic resin, xylene resin.

It means a polybutadiene resin or a modified product of these resins, and when used, it can be used alone or in combination, and an organic solvent can also be used for reducing viscosity.

Roughly speaking, applying the resin liquid to the conductor means impregnating an open-celled or breathable member such as felt, nonwoven fabric, or trousers with a resin liquid of a desired viscosity, and then applying the resin liquid to the conductor.
The open t that is sent out from the L wire supplier and wound onto the bobbin
It means coating the 11 wire with resin liquid in contact with the I line, and in hill type resin liquid, two of the above members (IMM liquid, impregnated or being impregnated) are used. Ru. The resin liquid is applied to the electric wire by contacting the resin liquid application member impregnated with the resin liquid to the electric wire. i! into the wire insertion hole provided in the i! The resin liquid is applied to the electric wire by passing it through, by stacking two of the above members and bending the wire between the two members, or by applying the resin liquid with a brush supplied with the resin liquid. It is.

Then, apply resin liquid (insulating varnish) to the conductor wire.
t is a device for winding the electric wire onto a bobbin, which is used in the transformer k, and a continuum provided at the opening with the MA. Contains a resin liquid having a desired viscosity and a desired amount of λt supplied from a storage tank at regular intervals or intermittently! A device comprising one (first) or two (second) ITD liquid storage compartment members is used. The resin liquid coating member is made by stacking and holding two open-cell sponges or members made of the same effective material, or by providing a small through hole in the center of the member to allow the transformer wire to pass through while contacting it. It consists of holding what is given to you,
To the device that planes the electric wire to the bobbin? I! The wire glue supplied from the wire supply device is inserted into the two pieces of the above-mentioned two-piece assembly El'lS or the above-mentioned small through hole, so that the wire is coated with Ja liquid. It is formed 'C.

In addition, the above-mentioned resin solution application member or brush may be formed.1 Also, as a means for curing the resin solution applied to the Kamene IK and the resin solution applied to the laminated iron core forming member. is S tree 11
=After the bobbin, which is made by winding up the resin coated with the liquid, is left as is or heated to harden the resin liquid,
After incorporating the forming J・d core forming member coated with resin liquid and forming the forming core, it was formed by several companies or by means of curing by heating, or by coating with resin liquid. A laminated iron core is formed in which a bobbin made by winding an L wire is coated with a layer of wood without hardening. There are means to simultaneously harden the electric wire and the laminated iron core by exposing the wire to Qi or by heating.

Note that the above-mentioned curing treatment by heating is not the conventional high-temperature heating.

Next, we will explain the application aspect of the present invention.
4. Before being rolled up (=5), a horiol component resin liquid (tooGPs) is applied to the electric sign, and then isocyanate component 4:flIJMWl, (1000
After forming a thin film of the resin solution made of the above Z solution on the electric wire at 6°C, collect it onto a bobbin,
When forming a laminated core by combining E::4Q and I-type laminated core forming members with the bobbin as an axis, first add a polyol component tree F to each of the above-mentioned hollow core type materials.
Coat each member with a layer of IUCPs and attach it to the 151J scrap metal core, and apply the polyol component resin solution to each member (1 piece per 1 piece). By dropping the incyanate component liquid (100 OPs) and then combining the paulownia,
The image component solution was spread into a thin film between each of the φ6I and 1-piece paulownia cores, and then left at room temperature (about 20° C.) overnight.

The obtained product was a bonito transformer in which the polyurethane resin was sufficiently cured, there was no possibility of poor pongee binding due to crazing phenomenon, there was no undulation phenomenon, and there was also good heat dissipation. In the example, the resin liquid deposited on the 11-ξ wire and the resin fluid deposited on the laminated core forming member are nitrified at the same time, but the hardening of the $11 liquid deposited on the lf wire, i.e. It is also possible to separately perform the hardening of the electric current λM wound on the bobbin and the purification of the cat fat liquid established in the layered core forming member incorporated into the hardened coil bobbin.

According to Misfire ψJ, a resin liquid that can be cured at 100°C or lower, preferably at room temperature, is used for the lid coating treatment and the adhesion treatment of the laminated core forming members, so it is not possible to use high-cost conventional varnish fl ( It was possible to efficiently manufacture an excellent transformer in a continuous manner without performing qi\ and baking processes.

Agent: Patent attorney, Shun Toyama

Claims (1)

[Claims] In the manufacture of transformers, between a wire supply device and a device that winds up the wire supplied from the wire supply source onto the bobbin, a resin liquid is temporarily attached to the wire and the wire is wound onto the bobbin K.
After cutting off, a coil bobbin with a rod 4 is obtained, with or without hardening treatment, and then incorporated into the bobbin to form a blowing core. The JR iron core is formed by adhering it to the coil bobbin, and then hardening it.
A method for manufacturing a transformer, characterized in that the electric wire, the V2 core forming F4F, and the resin liquid temporarily attached to the ladle are made of a synthetic resin H-bond that hardens at a temperature below 100°C.