JPH0456442B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a wire-wound coil, and particularly to a method for bonding and fixing self-bonding wires.

[Background technology and its problems]

Conventionally, when manufacturing wire-wound coils, the following methods have been used for bonding and fixing self-bonding wires (hereinafter simply referred to as wires) having a fusion coating on their outer peripheries to each other.

Constant temperature oven bonding method This method uses wire-wound coils.
In this method, the wires are placed in a constant temperature bath at 110°C to 150°C to melt the adhesive film and bond and fix the wires.

This method has problems such as its range of application is limited by the degree of permanent deformation of the wound coil, and it takes time, increases man-hours, and costs.

Hot air bonding method This method involves winding the wire while blowing hot air at 150°C to 220°C onto the winding frame and the wire, melting the adhesive film and bonding and fixing the wires together. With this method, it is difficult to maintain the hot air at an appropriate temperature.
The problem is that the working environment is poor.

Electrical Adhesion Method This method is a method in which a suitable current is applied to the wire after winding, and the self-heating of the wire melts the adhesive film to bond and fix the wires together.

This method is not suitable for wires with a small diameter, and has problems such as increased man-hours and costs.

Solvent bonding method This method involves applying a solvent (alcohol, ethyl acetate, etc.) to the wire while winding the wire, melting the adhesive film and bonding between the wires.
This method involves drying in a constant temperature layer at ℃.

In this method, a solvent is applied to the wire before it is wound around the winding shaft, so when the wire is wound around the winding shaft, the slipperiness of the wire deteriorates due to the melted adhesive coating, and the adhesive coating peels off. There are also problems such as the inability to perform aligned winding.

As mentioned above, each of the conventional methods has its own problems.

[Purpose of the invention]

The present invention has been made in view of the above points, and provides a simple and inexpensive method for manufacturing a wire-wound coil in which the fusion film does not peel off.

[Summary of the invention]

In order to achieve the above object, the present invention manufactures a wire-wound coil by spraying a solvent that melts a fusion film on the part where the wire is wound around the winding shaft of a winding frame and adheres the wires to each other. The film does not peel off and can be manufactured easily and inexpensively.

〔Example〕

Figures 1 a and b are a partially cutaway front view and a partially cutaway side view showing an overview of the coil winding device of the present invention, and Figures 2 a, b, and c are flowcharts of each part of Figure 1. It's a chat.

In FIG. 1, 1 is a wire provided with a fusion film on the outer periphery, 2 is a wire guide that guides the wire 1, 3 is a spindle shaft connected to the shaft of a motor (not shown), and 4 is a wire fixed to the spindle shaft 3. A guide rotor, 5 is a locking pin that holds the wire 1 attached to the guide rotor 4, 6 is a compression spring that urges the tip of the locking pin 5 to come into contact with the guide rotor 4, and 7 is the spindle shaft. The winding frame attached to the tip of the winding shaft 8, the side plate 9 and the winding shaft 8
Side plate 1 that can be engaged and detached using a ball plunger etc.
Consists of 0.

11 is a cutter for cutting the wire 1, and 14 is a nozzle of the spray mechanism 12.

Next, the operation and operation of manufacturing a winding coil using the coil winding device will be explained.

First, one end of the wire 1 is held between the guide rotor 4 and the locking pin 5 by the biasing force of the compression spring 6, and when the motor (not shown) is started, the spindle shaft 3 is moved to the first
As the wire 1 begins to rotate clockwise in FIG. 2A as shown in FIG. At the same time, compressed air and solvent are supplied to the spray mechanism 12 as shown in Fig. 2b.
Since the solvent is supplied as shown in c, the solvent mixture is sprayed from the nozzle 14 onto the portion of the winding shaft 8 around which the wire 1 is wound. Therefore, the wires can be wound in alignment without deteriorating the slippage of the wire 1 or peeling off the fusion film.

Then, when winding is performed a predetermined number of times in time T ₁ while spraying the solvent mixture from the nozzle 14 onto the winding shaft 8 and the wire 1, the motor is stopped and the supply of solvent to the spraying mechanism 12 is stopped, and the nozzle 1
Compressed air is blown for a time T ₂ to dry or semi-dry the manufactured wire coil from 4 to the winding shaft 8 . Thereafter, the supply of compressed air to the blowing mechanism 12 is also stopped, and during time T ₃ the wire 1 is saved with electricity by the cutter 11 and the side plate 10 is removed from the winding shaft 8, and the wire 1 of the winding coil is removed from the locking pin 5. At the same time as removing the wire, hold the wire 1 with the locking pin 5 and attach it to the winding shaft 8.
Remove the winding coil from. Then, side plate 1 again
0 to the winding shaft 8.

This completes one cycle of winding coil manufacturing.
Thereafter, winding coils can be manufactured in the same manner.

FIGS. 3a and 3b are a partially cutaway front view and a partial plan view showing the spraying mechanism, in which the spraying mechanism 12 includes a cup 13 for storing a solvent (alcohol, ethyl acetate, etc.)
a needle 15 that adjusts the amount of solvent supplied from the cup 13 to the nozzle 14; a jig cylinder 16 that operates the needle 15 to supply and stop the solvent;
It consists of a piston rod 17, a guide rod 18, and an air piece 20 that supplies compressed air from a hose 19 to the nozzle 14. The supply and stopping of compressed air to the hose 20 is performed outside the spray mechanism 12, and the timing of each operation can be controlled by a timer or the like, and the effective stroke of the jig cylinder 16 depends on the fixed position of the guide rod 18. This can be done by adjusting.

When the jig cylinder 16 operates, the piston rod 17 and guide rod 18 are pushed up, pushing up the needle 15 and supplying the solvent from the cup 13 to the nozzle 14.

An example of manufacturing a wire-wound coil according to the present invention is to use wire 1 with a finished outer diameter of 0.06 mm to create a wire-wound coil with an inner diameter of 10.35 mm, an outer diameter of 10.60 mm, a width of 1.8 mm, and 54 turns. If the diameter of the nozzle 14 is 0.6 mm, the blowing air pressure is 1.0 Kg/cm ² , and the blowing distance (from the nozzle 14 to the wire 1) is 50 mm, the amount of alcohol used is 0.6 cc per piece, which is as cheap as 50 yen. in,
The adhesive strength obtained was the same as that obtained using the hot air adhesive method.

〔Effect of the invention〕

As explained above, in the method of manufacturing a wire-wound coil according to the present invention, the wires are bonded to each other by spraying a solvent on the part where the wires are wound around the winding shaft. A wire-wound coil can be manufactured without worsening wire slippage. Further, the adhesive strength of the wire is sufficient, the number of man-hours is small, and the cost is low.

[Brief explanation of the drawing]

Figures 1 a and b are a partially cutaway front view and a partially cutaway side view schematically showing a coil winding device for the present invention, and Figures 2 a, b, and c are flowcharts of each part of Figure 1. Figures 3a and 3b are a partially cutaway front view and a partial plan view showing the spray mechanism. In the figure, 1 is a wire, 3 is a spindle shaft, 4 is a guide rotor, 5 is a locking pin, 6 is a compression spring, 7 is a winding frame, 8 is a winding shaft, 12 is a spray mechanism, and 14 is a nozzle.

Claims (1)

[Claims] 1. A solvent is sprayed onto the portion of the winding frame where the self-fusible wire having the fusible film on its outer periphery is wound around the winding shaft of the winding frame to melt the fusing film and bond the self-fusible wires to each other. A method for manufacturing a wire-wound coil.