JPH04219911A - Winding machine - Google Patents

Abstract

PURPOSE:To obtain such a winding machine that a bobbin set on a spindle can rotate without chatterng and can make accurate winding work. CONSTITUTION:The spindle 1 of this winding machine has a rotating shaft 2 equipped with a receiving member 3 having wedge-like shape and keeping member 8. A bobbin 10 put through rotating shaft 2 is pressed against the receiving member 3 by means of the keeping member 8. Since the bobbin 10 is forced by means of the member 3, the bobbin 10 does not clatter and accurate winding work can be carried out.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding machine used for winding wire around the bobbin of a wire-wound transformer.

0002

[Prior art and problems] Conventionally, this type of winding machine
A device having a spindle 20 shown in FIGS. 7 and 8 was known. The spindle 20 consists of a cylindrical rotating shaft 21, a rectangular parallelepiped bobbin receiver 22 provided perpendicularly intersecting the rotating shaft 21, and a spherical bobbin holder 23 provided on the tip side of the rotating shaft 21.

On the other hand, the bobbin 25 of the wire-wound transformer has a cylindrical body 26 and an upper flange 27 provided at the end of the body 26.
and a lower collar portion 28. Rotating shaft 21 of spindle 20
is inserted into the cylindrical body portion 26 of the bobbin 25 to support the bobbin 25. The bobbin 25 is pressed against the bobbin receiver 22 by the bobbin presser 23 and positioned in the axial direction of the rotating shaft 21. The bobbin 25 set on the spindle 20 in this manner has a winding (not shown) wound around the body 26 of the bobbin 25 as the spindle 20 rotates. When the winding operation is completed, the terminal end of the winding wire is tied to a pin terminal 29 provided on the bottom surface of the lower collar portion 28.

By the way, when setting the diameter of the rotating shaft 21 of the spindle 20, it is taken into consideration that the smallest value within the tolerance range of the inner diameter of the body 26 of the bobbin 25 can be inserted. Similarly, when setting the width of the bobbin receiver 22, consideration is given so that the smallest upper collar portion 27 within the tolerance range can be inserted therethrough. Therefore, when the bobbin 25 is inserted into the spindle 20, the rotating shaft 21, the body 26, and the bobbin receiver 22
In some cases, a gap may occur between the upper collar portion 27 and the bobbin 25, causing the bobbin 25 to shake. If you wind the wire in a shaky state,
Problems have arisen, such as the windings wound around the body 26 becoming misaligned and the position at which the end of the winding is connected to the pin terminal 29 being misaligned.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a winding machine that allows a bobbin set on a spindle to rotate without wobbling and to perform accurate winding work.

[0006]

[Means and operations for solving the problems] In order to solve the above problems, the winding machine according to the present invention has a spindle (a
) a rotating shaft that is inserted into the cylindrical body of the bobbin to support the bobbin; (b) a substantially wedge-shaped receiving member that is provided on the rotating shaft and urges the bobbin that is inserted through the rotating shaft; (c) The present invention is characterized by comprising a pressing member provided on the tip side of the rotating shaft and pressing the bobbin against the receiving member.

In the above configuration, the bobbin inserted into the rotating shaft of the spindle is pressed against the substantially wedge-shaped receiving member by the holding member, and the rotating shaft is positioned in the axial direction. Along with this positioning, the receiving member urges the bobbin in the outward radial direction of the rotating shaft, and the bobbin (particularly on the receiving member side) is positioned in the radial direction of the rotating shaft. Therefore,
Even if the inner diameter of the body of the bobbin is larger than the diameter of the rotating shaft of the spindle, the bobbin does not shake.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a winding machine according to the present invention will be described below with reference to the accompanying drawings. 1 and 2 are views showing the spindle of the winding machine of this embodiment. spindle 1
consists of a cylindrical rotating shaft 2, a wedge-shaped receiving member 3 provided perpendicularly intersecting the rotating shaft 2, and a spherical holding member 8 provided on the tip side of the rotating shaft 2. The receiving member 3 includes a fixed part 4 having a substantially rectangular parallelepiped shape and a movable part 6 connected to the fixed part 4 via a spring 5. Grooves 4a parallel to the long sides are provided on both sides of the fixing part 4 in the longitudinal direction so as to face each other. As shown in FIG. 3, the bottom of the groove 4a is provided with a recess 4b for partially sinking the spring 5, and one end of the spring 5 is firmly fixed to the bottom of the recess 4b. The other end of the spring 5 is firmly fixed to the back side of the movable part 6. The movable part 6 has a tapered surface on the front side, and is movable in the radial direction of the rotating shaft 2 along the side wall of the groove 4a while being regulated by the spring 5. Normally, the movable part 6 is located away from the bottom surface of the groove 4a due to the spring force of the spring 5.

The spherical holding member 8 is provided at a position a predetermined distance away from the receiving member 3 toward the tip of the rotating shaft 2. The holding member 8 is a circular recess 2 provided in the rotating shaft 2.
A part of it is submerged in A, and is connected to the rotating shaft 2 via a spring 9. The holding member 8 is movable in the radial direction of the rotating shaft 2 along the side wall of the groove 2a while being regulated by a spring 9.

[0010] Note that a well-known body (not shown) of the winding machine is used, but the detailed structure and operation will be omitted. Next, the operation of the winding machine having the spindle having the above structure will be explained. As shown in FIGS. 4 and 5, the bobbin 10 of the wire-wound transformer has a cylindrical body 1.
1. Consists of an upper flange 12 and a lower flange 13 provided at the end of the body 11. A pin terminal 14 is provided on the bottom surface of the lower collar portion 13. A rotating shaft 2 of the spindle 1 is inserted into a cylindrical body 11 of a bobbin 10 to support the bobbin 10. When the bobbin 10 is inserted, the pressing member 8 on the inner wall surface of the body 11 is completely submerged in the circular recess 2a of the rotating shaft 2. Then, as shown in FIG. 6, when the body 11 of the bobbin 10 passes the position of the presser member 8 and the bobbin 10 is inserted to the position where the lower collar portion 13 is pushed up by the presser member 8, the bobbin 10 The upper flange portion 12 pushes the movable portion 6 of the receiving member 3. The movable part 6 moves in the inward radial direction of the rotating shaft 2,
A repulsive force of the spring 5 is generated. This repulsive force causes the movable portion 6 to urge the bobbin 10 in the outward radial direction of the rotating shaft 2, and the bobbin 10 (particularly on the side of the receiving member 3) is positioned in the radial direction of the rotating shaft 2. Therefore, the body 11 of the bobbin 10
Even if the inner diameter of the bobbin 10 is larger than the diameter of the rotating shaft 2 of the spindle 1, the bobbin 10 does not shake.

In this way, the bobbin 10 is set on the spindle 1, and as the spindle 1 rotates, a winding (not shown) is wound around the body 11 of the bobbin 10. When the winding operation is completed, the terminal end of the winding wire is tied to the pin terminal 14. After this, the bobbin 10 is removed from the spindle and transferred to the next process. Note that the winding machine according to the present invention is not limited to the above-mentioned embodiments, and can be modified in various ways within the scope of the gist.

[0012] If the wedge-shaped movable member has to bias the bobbin with a large force, compressed air may be used instead of a spring. Alternatively, the structure may be such that the spring is arranged parallel to the rotation axis of the spindle, and the wedge-shaped movable member moves in the axial direction of the rotation axis of the spindle to bias the bobbin.

[0013]

[Effects of the Invention] As is clear from the above description, according to the present invention, when the bobbin inserted through the rotating shaft is pressed against the approximately wedge-shaped receiving member by the presser member of the spindle, the receiving member urges the bobbin. Therefore, a winding machine that eliminates bobbin rattling and can perform accurate winding work is obtained. As a result, the defect rate of wire-wound coils is reduced.

[Brief explanation of the drawing]

1 to 6 show an embodiment of a winding machine according to the present invention.

FIG. 1 is a front view showing a spindle of a winding machine.

FIG. 2 is a right side view showing the spindle of the winding machine.

FIG. 3 is an enlarged view of part A in FIG. 2.

FIG. 4 is a front view showing a state where the transformer bobbin is set on the spindle.

FIG. 5 is a right side view showing the transformer bobbin set in the spindle.

FIG. 6 is a partial vertical sectional view for explaining the operation of the holding member. 7 and 8 show conventional examples.

FIG. 7 is a front view showing a conventional example.

FIG. 8 is a right side view showing a conventional example.

[Explanation of symbols]

1...Spindle 2...Rotation axis 3...Substantially wedge-shaped receiving member 8... Holding member

Claims (1)

[Claims] 1. A rotating shaft that is inserted into a cylindrical body of a bobbin to support the bobbin, a substantially wedge-shaped receiving member that is provided on the rotating shaft and urges the bobbin that is inserted through the rotating shaft, and a rotating shaft that supports the bobbin. A winding machine characterized by having a spindle including a pressing member provided on the tip side of a shaft and pressing the bobbin against the receiving member.