JPH071747B2 - Winding device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device used for producing a voice coil for a speaker and the like.

2. Description of the Related Art In recent years, as one means for improving the characteristics of a speaker, instead of the conventional voice coil made of round copper wire, a voice in which rectangular wires are aligned and closely wound for the purpose of improving the space factor of the voice coil. A coil was desired.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, as for the voice coil in which the rectangular wires are aligned and closely wound, the one-layer wound one has been realized, but the two-layer wound one has not been realized.

Means for Solving the Problem In order to solve this problem, a winding device according to the present invention is capable of sliding and rotating on a rotatable winding shaft provided with a mechanism for gripping an end of a wire rod. And a wire guide having a groove for guiding the wire, and a wire guide placed opposite to the wire guide and having a groove for sliding and opening / closing on the winding shaft and guiding the wire.

Operation As described above, the winding device of the present invention holds the wire rod (bobbin in the case of a bobbinless voice coil) when the winding wire of the first layer is wound by gripping the end of the wire rod by the rotatable winding shaft. When,
Between the wire guide, which is slidable and rotatable on the winding shaft and has a groove for guiding the wire, and when winding the second layer, the wire guide and the wire guide are placed opposite to each other. By inserting a rectangular wire between the wire rod and a wire guide that can slide and open and close on the winding shaft and that guides the wire rod, rotate the winding shaft with the wire rod standing, and perform winding. It is possible to obtain a voice coil in which two layers of rectangular wires are closely wound.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the winding shaft 1a and the winding shaft 1b are coaxial with each other, and the winding shaft 1b can move left and right in FIG. 2 while keeping the same coaxial with the winding shaft 1a. Further, the end portions of the winding shaft 1a and the winding shaft 1b have a structure in which they can rotate in synchronization by fitting the concave portions 3a and the convex portions 3b provided on the end surfaces of the respective winding shafts.

The wire guide 2a is rotatable and slidable on the winding shaft 1a by the ball bush 10, has a groove 14 for guiding the wire 12, and is pressed by the compression spring 4 to the right in FIG. Reference numeral 5 denotes a detent mechanism for the line guide 2a. By pushing the tip end portion of the lever 16 in the direction of arrow A in FIG. 2, the line guide 2a can be brought into a rotatable state from a non-rotating state.

6 is a wire chuck, which rotates together with the winding shaft 1b. Reference numeral 2b is a wire guide, which is composed of a pair of plates each having a semicircular cutout at its end, and one of which has a groove 15 for guiding the wire 12, which can be opened and closed and slides on the winding shaft 1b. It is movably attached. 8 is a line retainer.

9 is a traverse unit, which moves to the left and right in FIG.
It is possible to change the direction in which the wire 12 is supplied when winding. 11 is a bobbin for winding, 12 is a wire rod, and 13 is a coil in the winding.

The operation of the winding device configured as described above will be described below.

In FIG. 2, first, the bobbin 11 is fitted into the winding shaft 1a,
Move the unit on the reel 1b side to the left and
1b is connected by fitting the concave portion 3a and the convex portion 3b. This time,
The line guide 2a is in a state in which the detent 5 is working, and the line guide 2b is in an open state. Next, the wire chuck 6 on the winding shaft 1b is caused to grip the end of the wire 12 through the wire traverse unit 9.
Push the wire guide 2a to the left in Fig. 2 and rotate the winding shaft 1a and the winding shaft 1b 1/2 times with a gap between the wire guide 2a and the wire retainer 8. Press on the work clamp 8 and wire 12
Is inserted between the line retainer 8 and the line guide 2a. Next, the wire traverse unit 9 is moved leftward in FIG. 2 so that the wire rod 12 is supplied to the bobbin 11 through the guide groove 14 of the wire guide 2a. In this state, if the winding shaft 1a and the winding shaft 1b are rotated to perform winding, the wire rod 12 is guided between the wire guide 2a and the wire retainer 8 by the guide groove 14 of the wire guide 2a, and the first flat wire Aligned tight winding is performed. (See FIG. 3) Next, the line guide 2b is closed and pressed against the line guide 2a with a constant force. Further, the detent 5 of the wire guide 2a is removed so that the wire guide 2a can be rotated. Next, the line traverse unit 9
Move the wire rod 12 to the right in the figure so that the wire rod 12
So that it is fed to bobbin 11 through 15. If the winding shafts 1a and 1b are rotated in this state to perform winding, the second-layer rectangular wire aligned close-contact winding can be formed between the wire guides 2a and 2b as in the case of the first layer. (Refer to FIG. 4) If the wire retainer 8 is removed and the end face of the bobbin 11 is used as a substitute for the wire retainer, and the winding shaft 1a is directly wound, a bobbinless voice coil in which a rectangular wire is wound in two layers Can be wound. (See FIG. 5) Effect of the Invention As described above, according to the present invention, a rotatable winding shaft provided with a mechanism for gripping an end portion of a wire rod and a wire rod slidable and rotatable on the winding shaft are guided. By providing a wire guide having a groove, and a wire guide having a groove placed opposite to the wire guide and capable of sliding and opening / closing on the winding shaft and guiding the wire,
It is possible to realize an excellent winding device capable of performing double-layer winding by aligning and adhering rectangular wires.

[Brief description of drawings]

FIG. 1 is a perspective view of a winding device according to an embodiment of the present invention,
FIG. 2 is a sectional view of the same, FIGS. 3 and 4 show a state in which the first-layer rectangular wire aligned winding of the present invention is performed, and FIG.
Diagram showing the state of the second layer rectangular wire aligned winding,
FIG. 5 is a view showing a state in which a bobbinless voice coil is wound. 1a: reel, 1b: reel, 2a: wire guide, 2b: wire guide, 6: wire chuck, 8: wire holder.

Claims (2)

[Claims] 1. A rotatable winding shaft provided with a mechanism for gripping an end portion of a wire rod, a line guide having a groove for guiding the wire rod slidably and rotatably on the winding shaft, and the wire guide opposed to the wire guide. And a wire guide having a groove that is slidable and openable on the winding shaft and that guides the wire rod. 2. The winding device according to claim 1, wherein a wire retainer is provided on the winding shaft.