JPH11213783A - Apparatus for manufacturing enameled wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing an enameled wire capable of preventing disconnection of a wire due to foam particle formation in a running wire material and damage on a squeezing tool in a coating material applying process and baking process at the time of starting manufacture. SOLUTION: A coating material 3 is applied to a running wire material 1 by using a coating material applying tank 5 provided with a coating material applying part 2 and a squeezing tool 4 and the resultant wire material is dried and baked in a backing furnace 8 and wound on a winding bobbin 14 via a pulling capstan 9. In this case, a coating material successively applying means 7 capable of successively applying the coating material 3 to a running wire material 1 in the order of running wires or blocks of running wires is installed before the running wire material 1 introducing side of the coating material tank 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enamel wire manufacturing apparatus. More specifically, the present invention relates to an enameled wire manufacturing apparatus with improved paint application means.

[0002]

2. Description of the Related Art An ordinary enamel wire manufacturing apparatus which has been conventionally used includes a paint application section such as a paint application roller (hereinafter abbreviated as an application roller) rotating in paint and a drawing tool such as a felt or a die. After applying the paint to the running wire using a paint application tank equipped with a coating and drying and baking in a baking furnace, repeating the application and baking several times, it is wound around the take-up bobbin of the take-up machine via the take-off capstan. It is a device to take.

[0003] In the above-mentioned manufacturing apparatus, a paint coating tank (hereinafter, abbreviated as a coating tank) is used at the time of initial wire-laying when manufacturing an enameled wire, or at the time of wire breaking at the time of wire breakage during manufacturing. Apply a roller cover (processed tin plate, commonly called "boat") to the application roller to prevent paint from sticking to the wire, or use a 5 mmφ lot rod. The wire is lifted to prevent the paint from sticking, and the wire is passed through a drawing device. After rotating the roller, remove the roller cover etc. from the coating tank, apply the paint to the wire, squeeze out the excess paint with a squeeze tool, and repeat baking several times to obtain a normal enameled wire. For loss removal He had been transferred to a bobbin for the product from the bobbin.

[0004]

When the roller cover is used, there is a danger that the running wire will be cut when the roller cover is removed from the coating tank, and the paint will adhere to the back surface of the roller cover. Installation,
There is a problem that the neighborhood is soiled during removal and storage.

[0005] In the paint application process at the start of production, when the roller cover and the lot bar are removed and the paint is applied to all running wires (hereinafter, also referred to as “all running wires” and “all passes”) at once by using a squeeze tool. In particular, in the production of thick-film enameled wires equivalent to two or more types of JIS and heat-resistant enameled wires such as AIW, it is necessary to increase the amount of paint applied. There is a problem that foaming occurs in the process and foam particles are generated on the surface of the traveling wire. In addition, there is a problem that the running wire is broken or the felt and the die of the drawing tool are damaged due to the generation of foam particles. Further, when the wire is broken, the wire must be connected from the beginning, which requires a great deal of labor and is a problem.

In particular, when the above-mentioned thick film enameled wire or the like is manufactured by using a die as a drawing tool, the hole diameter of the die is gradually increased in accordance with the film thickness which increases with each number line. Is considerably larger than the diameter of the first die. Therefore, if the roller cover or the like is removed from the application tank and the paint is applied to all the passes at once, a considerably large amount of paint will be applied to the surface of the wire, especially in the dies near the final position. The generation of grains has increased. In that case, in the die squeezing application step and the grain detection dice adopting step, disconnection is often caused by foaming particles at the stage of applying the paint, which has been a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned various problems of the prior art. In a paint application step and a baking step at the start of production, foaming particles are generated in a traveling wire and the wire breaks. It is an object of the present invention to provide an enamel wire manufacturing apparatus that does not cause the drawing tool to be damaged.

[0008]

According to a first aspect of the present invention, a paint 3 is applied to a traveling wire 1 using a paint application tank 5 provided with a paint application section 2 and a squeezing tool 4, and a baking furnace is provided. 8
After drying and baking, the enameled wire manufacturing apparatus is wound around the winding bobbin 14 via the take-off capstan 9 in the enameled wire 1 in which the paint 3 is applied to the running wire 1 or in the running line block order (hereinafter referred to as the running line block order). , Abbreviated as running block order)
An enameled wire manufacturing apparatus is provided with a paint sequential applying means 7 capable of sequentially applying the paint, provided in front of the paint application tank 5 on the introduction side of the traveling wire 1.

[0009] The enameled wire manufacturing apparatus according to the first aspect includes:
By providing the paint sequential application means 7 in front of the paint application tank 5 on the introduction side of the traveling wire 1, it becomes possible to sequentially apply the paint 3 to the traveling wire 1 in the traveling line order or the traveling block order. For example, during the removal of loss at the time, no foaming particles are generated in all passes, the running wire 1 is not broken, and the drawing tool 4 is not damaged.

According to a second aspect of the present invention, the paint sequential applying means 7 includes a stepped portion 7a having a stepped main portion.
When necessary, the step-like portion 7a can be set at a position where the paint is not applied to all the traveling wires 1;
When necessary, every time the traveling wire 1 circulates the baking furnace 8 a required number of times, the stepped portion 7a is actuated stepwise downward so that the paint 3 is applied to the traveling wire 1 in the traveling line order or in the traveling line block. An enamel wire manufacturing apparatus according to the first aspect, which can apply the coating in order.

The enameled wire manufacturing apparatus according to the second aspect is
By using the stepwise portion 7a as the main part of the paint sequential application means 7, the paint 3 can be gradually applied to the traveling wire 1 in the traveling line order or the traveling block order. Therefore, since no foaming particles are generated in all the passes, the running wire 1 is not broken, and the drawing tool is not damaged. In addition, when necessary, all running wires 1
The step-like portion 7a can be set at a position where the paint is not applied to the surface, so that it is suitable at the time of wire-laying, breaking of wire, at the end of production, and the like.

According to a third aspect of the present invention, there is provided the enamel wire manufacturing apparatus according to the first or second aspect, wherein the means for sequentially applying the paint is automatically performed.

[0013] The enameled wire manufacturing apparatus according to the third aspect includes:
By automatically performing the paint sequential application unit, the paint 3 can be sequentially and accurately applied to the traveling wire 1 in the traveling line order or the traveling block order. As a method of automatically performing the operation, there is a method of using a timer and a motor to operate the stepped portion 7a stepwise at an arbitrary time interval, a method of using a cylinder instead of the motor, and the like. is not. It should be noted that the above-mentioned sequential coating means may be manually performed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The contents of the present invention will be described below in more detail with reference to an embodiment shown in the drawings. Note that the present invention is not limited by this. 1. First Embodiment A first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic view showing an embodiment of an enamel wire manufacturing apparatus according to the present invention. The enamel wire manufacturing apparatus of the present invention applies a paint 3 to a traveling wire 1 using a paint application tank 5 provided with a paint application unit 2 and a squeezing tool 4, and a baking furnace 8
After drying and baking, the enameled wire producing apparatus is wound around the winding bobbin 14 via the take-up capstan 9 in which the paint 3 is sequentially applied to the running wire 1 in the order of the running line or the block order of the running line. This is a manufacturing apparatus in which a paint sequential applying means 7 capable of applying the paint is provided in front of the paint application tank 5 on the introduction side of the traveling wire 1.

In the enamel wire manufacturing apparatus according to the first embodiment of the present invention, the means for sequentially applying paint 7 comprises the running wire 1
Is a paint applying means capable of sequentially applying paint 3 in the order of travel lines or in the order of blocks of travel lines. The traveling wire 1 is, for example, a thin copper wire. The coating unit 2 is, for example, a coating roller. The paint 3 is, for example, an insulating paint for an enameled wire. Further, felt or a die is used as the squeezing tool 4, for example, a die. The aperture 4 is normally held by an aperture holder 4a. The paint application tank 5 is, for example, a box-type paint application tank. The baking furnace 8 is, for example, a horizontal electric furnace. The take-up capstan 9, the sheave 12, the winding machine 13, and the winding bobbin 14 are general ones.

2. Second Embodiment An embodiment of the second invention will be described with reference to FIGS. FIG. 2 is an external view showing the sequential coating means provided in front of the running wire introduction side of the coating tank. The paint sequential applying means 7 applied to the enamel wire manufacturing apparatus of the first embodiment has a stepped portion 7a in which a main part is stepped, and when necessary, paints are applied to all the traveling wires 1. The step-shaped portion 7a can be set at a position where the coating is not applied, and when necessary, the step-shaped portion 7a is operated stepwise downward every time the traveling wire 1 goes around the baking furnace 8 a required number of times. Thus, the paint applying means can sequentially apply the paint 3 to the travel wire 1 in the order of the travel line or the block order of the travel line.

The stepped portion 7a is made of, for example, stainless steel, and has a circular portion in contact with the traveling wire 1, and has three steps. The traveling wire 1 is made of three blocks of two each. Note that the step-like portion 7a is 3
It is not limited to a step, and can be arbitrarily designed.

Although not shown, the sequential coating means 7 is automatically activated at an arbitrary time by using, for example, a timer and a stepping motor, and the stepped portion 7a can be lowered stepwise to a predetermined position. it can.

3. Third Embodiment An embodiment of the third invention, in particular, an operation state of the sequential coating means will be described with reference to FIGS. In addition, FIG.
See also 2. FIG. 3 is a schematic diagram viewed from behind the stepped portion and the application roller in order to explain the relationship between the operation position of the stepped portion of the paint sequential applying means and the position of the traveling wire rod, and FIG. In the state in which the paint is not applied to the traveling wire, FIG. 11B shows that the paint is applied to two of the traveling wires of the first block by descending from the upper surface of the application roller up to the lowest first step in the stepped portion. FIG. 4C shows a state in which the second step of the step-like portion is lowered below the upper surface of the application roller, and further, the paint is applied to two of the traveling wires of the second block. )
In the state where the highest step up to the third step in the step-like portion is lowered from the upper surface of the application roller, paint is further applied to two of the traveling wires of the third block, and the paint is applied to all traveling wires. is there. FIG. 4 is a schematic view of the stepped portion and the like as viewed from the side, for explaining the operating position of the stepped portion of the paint sequential applying means and the positional relationship between the running wire and the application roller.

An example in which a die is used as the squeezing tool 4 and the application and baking of drying and baking in a baking furnace 8 are repeated six times to produce an enameled wire will be described. In this case, as shown in FIGS. 2 and 3, the stepped portion 7a of the paint sequential applying means 7 has three steps, and the traveling wire 1 has three blocks of two.

First, at the start of production,
The step-like portion 7a of the paint sequential applying means 7 is set at the position shown in FIG. 3A (this state is also a state where the step-like portion is set to 7a 'in FIG. 4), and the entire wire is applied. Roller 2
The wire 1 is passed through the die 4 in a state in which the paint 3 is not applied without touching the upper surface 2u of the wire, and the wire is passed through a baking furnace six times. To run.

Next, the first step d1 of the stepped portion 7a is
A position below the upper surface 2u of the application roller 2, for example, FIG.
(B) is set as shown in FIG.
s is coated with paint 3 to obtain a paint-coated wire 1 ′, excess paint is squeezed out with a die 4, dried in a baking furnace 8,
Repeat baking twice.

Next, after the traveling wire 1 having been dried and baked twice has passed through the second step d2 of the stepped portion 7a, the second step d2 of the stepped portion 7a is moved to the upper surface of the coating roll 2. 2c, for example, as shown in FIG. 3 (c), the paint 3 is applied to two of the traveling wires 1t of the second block.
Is applied to form a paint-coated wire 1 ′, excess paint is squeezed out by a die 4, and drying and baking are repeated twice in a baking furnace 8.

Next, after the traveling wire 1 having been dried and baked a total of four times passes through the third step d3 of the stepped portion 7a, the traveling wire 1 is moved to the application roller 2 by the third step d3 of the stepped portion 7a.
The position is set below the upper surface 2u, for example, as shown in FIG. 3D (this state is also the state when the stepped portion is set to 7a in FIG. 4), and the traveling wire rod of the third block is set. 1
u is coated with paint 3 to make a paint-coated wire 1 ′, excess paint is squeezed out with a die 4, dried in a baking furnace 8,
A normal enameled wire is obtained by repeating baking twice. When the quality is stabilized, the bobbin 14
Switch to.

In the third embodiment, the stepped portion 7a has three steps and the traveling wire 1 has two blocks each of three blocks. However, the stepped portion 7a has six steps and the traveling wire 1 has 1
Of course, it is good also as a book. In some cases, the stair-like portion 7a may be formed in two steps, and the traveling wire 1 may be formed as two blocks each of three, and there is no particular limitation.

[0026]

By using the manufacturing apparatus of the present invention,
There is no need to use a roller cover or the like, so that contamination in the vicinity can be prevented. In addition, since no foam particles are generated during the production, the workability in producing a thick-film enameled wire or a heat-resistant enameled wire is improved, and the quality is stabilized and the productivity is improved. Further, when the means for sequentially applying the paints is automated, the rationalization, labor saving and further improvement in productivity can be obtained. Further, damage to the squeezing tool such as a die and a felt can be reduced, which contributes to cost reduction.
Therefore, the present invention has an extremely large effect of contributing to industry.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of an enamel wire manufacturing apparatus according to the present invention.

FIG. 2 is an external view showing a paint sequential applying means provided in front of a traveling wire introduction side of a paint application tank.

FIG. 3 is a schematic view seen from behind the step-like portion and the application roller in order to explain the relationship between the operation position of the step-like portion of the paint sequential applying means and the position of the traveling wire. FIG.
The paint is not applied to all running wires. FIG. 4B shows a state in which the paint is applied to two of the traveling wires of the first block down to the lowest first step in the step-like portion from the upper surface of the application roller. FIG. 3C shows a state in which the second step of the step-like portion is lowered below the upper surface of the application roller, and the paint is applied to two of the traveling wires of the second block.
FIG. 4D shows that the third highest step in the stepped portion descends from the upper surface of the application roller, and the paint is further applied to two of the traveling wires in the third block, and the paint is applied to all the traveling wires. It is in a state of being applied.

FIG. 4 is a diagram for explaining a positional relationship between a stepped portion of a paint sequential applying unit and a traveling wire, an application roller, and the like;
It is the schematic which looked at the step-like part etc. from the side surface.

[Explanation of symbols]

Reference Signs List 1 running wire (wire) 1 'paint-coated wire (running wire) 1s 1st block unpainted wire (running wire) 1t 2nd block unpainted wire (running wire) 1u 3rd block unpainted wire (Running wire) 2 Application roller 2u Upper surface 3 Paint 4 Squeeze tool (Dice) 4a Squeeze holder (Dice holder) 5 Paint application tank 7 Sequential paint application means 7a Stepped portion 7a 'Position where paint is not adhered to all traveling wires 8 Step of baking 8 Baking furnace 9 Take-up capstan 12 Sheave 13 Winding machine 14 Winding bobbin d1 First step of step d2 Second step of step d3 Third step of step

Claims (3)

[Claims] 1. A coating material (3) is applied to a traveling wire (1) using a coating material tank (5) provided with a coating material part (2) and a squeezing tool (4), dried and baked in a baking furnace (8).
In a device for manufacturing an enameled wire wound on a winding bobbin 14 via a winding line, paint 3 can be sequentially applied to the running wire 1 in the running line order or the running line block order. 7 is the traveling wire 1 of the paint application tank 5
An enameled wire manufacturing apparatus, which is provided in front of an introduction side of a wire. 2. The paint sequential applying means 7 has a stepped portion 7a whose main part is stepped. When necessary, the stepped portion 7a is located at a position where the paint is not applied to all the running wires 1. When necessary, each time the traveling wire 1 circulates the baking furnace 8 a required number of times, the stepped portion 7
a is operated stepwise downward so that the traveling wire 1
2. The enameled wire manufacturing apparatus according to claim 1, wherein the paint 3 can be sequentially applied in a running line order or a running line block order. 3. The enameled wire manufacturing apparatus according to claim 1, wherein the coating means is sequentially performed automatically.