JP2000286139A - Machine for producing longitudinally wound coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a longitudinally wound coil producing machine which can perform both the manufacturing of a longitudinally wound coil and bending of its terminal parts continuously in one time. SOLUTION: This machine has first and second bushes 1 and 5, one of which has a shaft part 4 to be used as a winding core, and the other has a hole 6 for receiving the shaft part 4. A wire support surface 3 of the first bush 1, against which a wire w abuts, has a groove 2 to be engaged with the wire and a spiral surface continuous to the groove 2. The first bush 1 can be rotated about the shaft part 4. A guide member 7 is provided between a wire supply part 8 and the first bush 1 for holding down the wire w, so that the wire w lies extended along the shaft part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a vertically wound coil in which a rectangular copper wire is vertically wound.

[0002]

2. Description of the Related Art Conventionally, a vertical winding coil has been used as a coil for a large transformer or the like, but in recent years, it has been increasingly used as an electric element for a small electronic device such as a personal computer.

[0003] Japanese Patent Laid-Open No.
As described in -75303, a wire such as a rectangular copper wire is guided to a bush having a shaft serving as a winding core, and the wire is locked by rotating means rotatable around the shaft. There is known a method of winding a wire around a shaft by rotating a rotating means while pressing the wire along a shaft with a roller.

When such a small coil is used as an electric element, it is desirable to directly attach it to a wiring board, like other elements such as a resistor and a capacitor. The portion is also spiral as a coil, and it is necessary to separately extend and bend both sides of the coil after manufacturing the coil in order to attach the coil to the substrate.

[0005] It is conceivable that the end of the wire is protruded from the bush in advance, and the coil is made while leaving the end in a straight line without being wound. In this case, the protruded end interferes with the roller. As a result, the rotation means cannot be rotated.

For this reason, it is necessary to manufacture the coil once, then extend the end portion and bend it into a predetermined shape, so that the production efficiency is low and the production cost is not preferable.

[0007]

Therefore, a device capable of manufacturing a vertically wound coil without winding an end portion, and furthermore, manufacturing of a vertically wound coil and bending of a terminal portion can be continuously performed at a time. There is a need for a vertical coil manufacturing apparatus.

[0008]

According to a first aspect of the present invention, there is provided an apparatus for manufacturing a vertically wound coil, comprising: a first bush (1);
A second bush (5) capable of sandwiching the wire (w) with the bush (1), and one of the bushes has a shaft portion (4) serving as a core of a coil, The other bush has a hole (6) into which the shaft (4) can be inserted, and the wire support surface (3) that contacts the wire (w) of the first bush (1) has a wire support surface. A groove (2) for locking the wire supplied on the surface, and the groove (2)
A first bush (1) having a helical surface portion leading to
Is rotatable about the shaft (4), and a wire (w) is provided between the wire feeder (8) and the first bush (1).
A guide member (7) for holding the wire (w) along the line (2).

According to this, the wire (w) sandwiched between the bushes (1) and (5) winds around the shaft (4) one after another as the bush (1) rotates. Since the wire supporting surface (3) has a spiral surface, the wire (w) is formed into a coil one after another.

Further, since the guide member (7) is arranged at a position away from the bush (1), the guide member (7) and the wire (w) are arranged together with the bush.
Even if the end (w1) of the wire rotates, the end (w1) of the wire rod and the guide member
(7) does not interfere.

According to a second aspect of the present invention, there is provided an apparatus for manufacturing a vertically wound coil according to the first aspect of the present invention, wherein the vertically wound coil is sandwiched between the first bush (1) and the second bush (5). And bending means (10) and (11) capable of bending the end portion (w1) of the vertical coil.

According to this, a vertically wound coil is manufactured by winding a wire, and the end portion (w1) can be continuously bent into a predetermined shape while the vertically wound coil is held by the bush. Therefore, production efficiency is improved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to preferred embodiments.

[Embodiment] FIG. 1 is a view showing a manufacturing process of a vertically wound coil using the apparatus of this embodiment, and FIG. 1 shows a state in which a rectangular wire is inserted. In the figure, (1) is a lower bush as a first bush, (3) is a wire supporting surface (upper surface of the lower bush (1)) for supporting a wire, and (2) is provided on a wire supporting surface (3). The grooved portion (4) is a shaft protruding upward from the center of the lower bush (1).

(5) is an upper bush as a second bush. (6) is a hole provided in the center of the upper bush, and the shaft (4) can be inserted therein.

(8) is a wire supply unit for supplying the wire (w), and (7) is a guide member for guiding the wire (w) supplied from the wire supply unit (8) between both bushes. . Although the wire (w) is a rectangular copper wire, any width and thickness can be used, for example, a foil-shaped thin wire can be used.

At the start of manufacturing, the upper bush (5) is moving upward, and a sufficient space is provided between the lower surface of the upper bush (5) and the wire supporting surface (3) of the lower bush (1). Have been.

The wire (w) supplied from the wire supply section (8) is
Guided by a rod-shaped guide member (7) provided between the wire supply section (8) and the lower bush (1), the wire tip (w1) is inserted above the wire support surface (3).

At this time, the lower bush (1) is on standby so that the groove (2) is located directly below the inserted wire (w), and the wire (w) is positioned along the groove (2). Will be posted. (2a) is a wire rod entrance of the groove (2).

The wire rod tip (w1) is connected to the wire support surface (3).
The supply of the wire (w) is temporarily stopped in a state where the wire (w) protrudes from the upper bush (5), and the wire (w) is moved between the upper bush (5) and the lower bush (1). Sandwich.

When the wire (w) is clamped, the lower bush (1) receives a force toward the upper bush (5) by a spring or the like. The shaft (4) provided on the lower bush (1) is inserted into a hole (6) provided on the lower surface of the center of the upper bush (5).

Next, the lower bush (1) is rotated in this state. The wire rod (w) is supplied from the wire rod supply unit (8) in accordance with the rotation speed of the lower bush (1). Since the wire (w) sandwiched between the upper and lower bushes is locked in the groove (2), when the lower bush (1) rotates, it tends to separate from the shaft (4), but the guide member ( 7) moves the wire (w) between the wire feeder (8) and the lower bush (1) from the lateral direction to the shaft (w).
Because the wire (w) is pushed along (4), the shaft (4)
And rotates with the lower bush (1) and winds around the shaft (4) along the wire support surface (3).

Since the wire support surface (3) is a spiral surface, the position of the wire (w) sandwiched by the wire (w) becomes relatively higher with respect to the wire tip (w1) as the wire is wound. To the wire rod separation surface (3a) located at the highest point of the wire rod support surface (3). Since the height of the step formed by the groove (2) and the wire separation surface (3a) is larger than the thickness of the wire (w), the wire passing through the wire separation surface (3a) collides with a wire located below. And it will be located above it.

In this manner, the wire (w) is successively wound around the shaft portion (4) to form a coil above the lower bush (1). As the number of turns of the coil increases, the vertical length of the coil increases, and the lower bush (1) is pushed by the coil from above. Therefore, the lower bush (1) is pushed downward against the spring.

FIG. 2 is a view showing a state of this winding, and FIG.
FIG. 4 is a side view showing a holding portion between upper and lower bushes, and FIG.

The tip end (w1) of the wire protruding from between the upper and lower bushes also rotates with the rotation of the lower bush (1), but the guide member (7) separates from the bushes (1) and (5). Because it is arranged at the position, it does not interfere with the wire rod tip (w1) during rotation.

After a coil having a predetermined number of turns is formed, the rotation of the lower bush (1) and the supply of the wire (w) from the wire supply section (8) are stopped.

FIG. 5 is a diagram showing a state at the end of winding. (9a), (9b) is a cutting device provided in the vicinity of the wire supply unit (8), the wire (w) so as to sandwich vertically
Disconnect. Thereby, the wire (w) of the material and the vertically wound coil are separated.

(10) and (11) are bending tools, and the tip of the wire rod
By moving to the position of (w1) and further moving up and down, the wire rod tip (w1) can be pressed to be staggered from both upper and lower sides to be bent into an arbitrary shape.

FIG. 6 is a view showing an example of a vertically wound coil manufactured in this manner. In the figure, (s) indicates a coil spiral portion, and (w2) indicates a wire end portion.

As described above, since the operation of winding the coil and bending the end can be performed in series, the production efficiency is improved.

The shape of the end portion is arbitrary, and can be bent to an appropriate shape as needed. For example, FIG.
Alternatively, the wire end portion (w2) may be bent. In addition, the one shown in FIG. 6 has both ends projecting in the direction of the broken line of the coil, while the one shown in FIG. 7 has both ends projecting in the radial direction of the coil. The coil may have an insulating film formed on the surface.

[0033]

As described above, according to the present invention, it is possible to provide a vertical coil manufacturing apparatus capable of continuously manufacturing a vertical coil and bending the terminal portion at one time.

[Brief description of the drawings]

FIG. 1 is a view showing a manufacturing process of a vertically wound coil using the present embodiment (when a rectangular conducting wire is inserted).

FIG. 2 is a view showing a manufacturing process of a vertically wound coil using the present embodiment (at the time of winding).

FIG. 3 is a side view showing a holding portion between upper and lower bushes.

FIG. 4 is a plan view of a main part showing a state during coil manufacture.

FIG. 5 is a diagram showing a manufacturing process of a vertically wound coil using the present embodiment (at the end of winding).

FIG. 6 is a diagram showing an example of a longitudinally wound coil that can be manufactured by the apparatus of the embodiment.

FIG. 7 is a diagram showing another example of a vertical coil that can be manufactured by the apparatus of the embodiment.

[Explanation of symbols]

 (1) Lower bush (2) Groove (2a) Wire entry (3) Wire support surface (upper surface of lower bush) (3a) Wire release surface (4) Shaft (5) Upper bush (6) Hole (7 ) Guide member (8) Wire feeder (9a), (9b) Cutting device (10) Bending tool (11) Bending tool (w) Wire (w1) Wire tip (w2) Wire end (s) Coil Spiral

Claims (2)

[Claims] A first bush; and a second bush capable of holding a wire between the first bush and one of the bushes having a shaft serving as a core of a coil. The other bush has a hole into which the shaft portion can be inserted, and the wire supporting surface that comes into contact with the wire of the first bush has a groove that locks the wire supplied on the wire supporting surface. A first bush is rotatable about the shaft portion, and a wire extends along the shaft portion between the wire supply portion and the first bush. And a guide member for holding the wire rod. 2. A bending means capable of bending an end of a vertically wound coil in a state in which the vertically wound coil is held between the first bush and the second bush. The vertical coil manufacturing apparatus according to claim 1, wherein: