JP2002217053A - Coil winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil winder having a compact rotary coupler comprising electric connecting means, fluid connecting means and optical fiber connecting means. SOLUTION: The winder has a rotary coupler 100 comprising two signal transfer members 4, 5 having butted end faces 4a, 5a, electric connecting means 21 and fluid connecting means 23 provided on the end faces 4a, 5a, and optical fiber connecting means 20 provided at central portions of rotary shafts on the end faces 4a, 5a. The members 4, 5 are relatively rotatable by rotating at least one of them, and has a contact surface of the outer side 4b of one transfer member 4 and the inner side 5b of the other transfer member 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a coil winding device having a rotary coupler for transmitting information and the like between relatively rotating signal transmission members.

[0002]

2. Description of the Related Art In general, as a means for transmitting and transmitting an electric signal in a state of relative rotation, various kinds of connection means for rotational connection called a slip ring are provided. As a fluid transporting means for flowing a fluid for a pressure source, cooling, or the like in a state of relative rotation, a connecting means for rotary connection comprising a combination of a precision processed groove and a seal is known. In addition, transmission in the state of relative rotation,
For transmission means of optical fiber signals for measurement etc.,
A connection means for rotary connection called an optical slip ring is known.

However, as a conventional rotary coupler,
For example, only one provided with one of electrical connection means, fluid connection means, and optical fiber connection means is found.

[0004]

Problems to be Solved By the conventional rotary coupler described above, if a rotary connection of an electric wire, a rotary connection of a fluid, and a rotary connection of an optical fiber are to be configured, a total of three units must be provided. There is a problem that it is impossible to respond to transmission and control of highly accurate information in a coil winding device, other machine tools, processing machines, and the like with a compact configuration.

[0005] It should be noted that electric connection means, fluid connection means,
In order to simultaneously provide the optical fiber connecting means to the rotary coupler, it is necessary to prevent the optical fiber connecting means from causing axial misalignment (center misalignment, inclination, etc.) due to sliding of the electric connecting means and the fluid connecting means. Is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a coil winding device having a compact rotary coupler having electric connection means, fluid connection means, and optical fiber connection means. The task is to provide.

[0007]

Means for Solving the Problems In order to solve the above problems, a coil winding device according to the present invention employs the following means.

That is, in the first aspect, an end face at which two signal transmission members which rotate relative to each other by rotating at least one of them, an outer peripheral surface of one signal transmission member, and an inner peripheral surface of the other signal transmission member. A rotary coupler having a contact surface for contacting the optical fiber, a connection means for an optical fiber provided at the center of the rotation axis of the end face, and an electric connection means and a fluid connection means provided on the contact surface Having.

In this means, the two signal transmission members which rotate relative to each other are abutted on the end face and the peripheral surface, and the connection means for the optical fiber is provided at the center of the rotation axis of the end face of the signal transmission member. Is prevented, and electrical and fluid connections are made.

According to a second aspect of the present invention, in the coil winding device according to the first aspect, the connection means for the optical fiber has a rotary coupler formed of a ball lens facing in a space.

According to this means, the ball lens which is effective for the connection of the bidirectional communication of the optical fiber and absorbs the axis deviation is opposed to the ball lens while avoiding the abrasion due to the direct contact.

According to a third aspect of the present invention, in the coil winding device according to the second aspect, the space between the ball lenses facing each other is a rotary coupler sealed with a ball lens holder holding the ball lenses and a ring-shaped spacer. It is characterized by having.

In this means, the space between the two ball lenses is sealed by the ball lens holder and the spacer, and the influence from the outside is cut off.

According to a fourth aspect of the present invention, in the coil winding device according to any one of the first to third aspects, the electric connection means is filled with a conductive liquid between the electrode pieces fixed to each signal transmission member. Characterized in that the rotary coupler is provided.

According to this means, mechanical rubbing of the electric connection means can be avoided.

According to a fifth aspect of the present invention, in the coil winding device according to any one of the first to third aspects, at least one of the signal transmission members is an electrode piece of an electric connection means and an insulating material to which the electrode piece is fixed. Are integrally formed, and the integrally formed member has a rotary coupler laminated along the rotation axis.

In this means, the number of electric wiring systems is adjusted by the number of layers of the integrally formed members.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a coil winding device according to the present invention will be described with reference to the drawings.

The coil winding device according to this embodiment has a rotary coupler for rotatingly connecting one system of optical fiber, three systems of electric wires, and one system of fluid passage.

Coil winding device 2 in this embodiment
As shown in FIG. 8, reference numeral 00 denotes a bed 116 serving as a base of the winding device, two sets of dies 112, 113, and a set of dies 112.
And 113, which drive two motors 110 and 111,
Drive shaft 11 for connecting mold 112 and motor 110
4, a drive shaft 115 connecting the mold 113 and the motor 111, a flange 117 provided on the drive shaft 115 penetrating through the rear end of the motor 111, and a rotary coupler 100 connected to the flange 117. Have been.

As shown in FIGS. 1 and 2, the rotary coupler 100 has one fixed signal transmission member 4 and
And the other signal transmission member 5 that rotates on a single rotation axis L.

One of the signal transmission members 4 is formed in a cylindrical shape to be inserted into the other signal transmission member 5, and has a flat front end surface 4a on the distal end side of the signal transmission member 5 and an outer surface. Has an outer peripheral surface 4b centered on the rotation axis L, a hollow portion 4c inside, and a rear end surface 4d on the side opposite to the front end surface 4a.

The other signal transmission member 5 is formed in a cylindrical shape into which the one signal transmission member 4 is inserted, and has an inner end surface corresponding to the front end surface 4a and the outer peripheral surface 4b of the one signal transmission member 4. 5a, an inner peripheral surface 5b, and a hollow portion 5c into which one of the signal transmission members 4 is inserted is formed, and a rear end surface 5d is provided on a side opposite to the front end surface 5a.

The signal transmission members 4 and 5 are fitted with the signal transmission member 4 so that the front end surface 4a and the inner end surface 5a abut each other, and the outer peripheral surface 4b and the inner peripheral surface 5b are joined. In contact. Between the outer peripheral surface 4b of the signal transmission member 4 and the inner peripheral surface 5b of the signal transmission member 5, three bearings 6, 7, 8 are mounted. These bearings center the two signal transmission members 4 and 5 (align the center axes) and secure an appropriate gap between the outer peripheral surface 4b and the inner peripheral surface 5b. The one bearing 6 is mounted near the inner end face 5a of the front end face 4a. The other one of the bearings 7 is for centering the connecting portion 30 of the signal transmission member 5, and is provided with a screw 9 for preventing the connecting portion 30 from coming off at the outer peripheral portion thereof. One remaining bearing 8
Are the mounting bolts 1 on the rear end face 5d of the other signal transmission member 5.
The cover plate 11 is supported by a cover plate 11 fixed at 0. In addition, a thin cylindrical insulating material 12 is interposed in a part between the outer peripheral surface 4b and the inner peripheral surface 5b of the signal transmission members 4 and 5.

The optical fiber 1 is a cable in which a coating material 1b is laminated on a core wire 1a composed of a core and a clad, and is wired on a rotation axis L. The connection terminal of the core wire 1a is fixed to a fixing member 13 (generally called a ferrule) for centering and the like, and is located near the front end face 4a and the inner end face 5a of the signal transmission members 4 and 5. The ferrule 13 is urged rightward in FIGS. 2 and 4 by a coil spring 14 supported by a spring guide 15.

On one signal transmission member 4 side, a spring guide 15 is attached to a rear end face 4 d of the signal transmission member 4 by a bolt 16.
A screw is provided at the end of the cover plate 17, which is fixed by a nut 18. On the other signal transmission member 5 side, the spring guide 15 is fixed to the signal transmission member 5 with a set screw 19. Therefore, the connection terminal of the core wire 1a is connected to the signal transmission member 4,
5 are urged toward the front end face 4a and the inner end face 5a.

As shown in detail in FIGS. 3 and 4, the connection means 20 for the optical fiber 1 is a ball lens holder 2 fixed to the front end face 4a and the inner end face 5a of the signal transmission members 4, 5.
0a and the ball lens 20 supported by the ball lens holder 20a and pressed against the connection end of the optical fiber 1a of the optical fiber 1.
b, and a ring-shaped spacer 20c that is interposed between the ball lens holders 20a and that secures a small interval S between the ball lenses 20b (ball lens holder 20a). The spacer 20c seals the interval S together with the ball lens holder 20a to prevent the ball lens 20b from being soiled and unnecessary light from entering.

The electric wire 2 is formed by coating a copper wire with insulation, and is wired to the hollow portion 4c of one signal transmission member 4 and the outer peripheral portion of the other signal transmission member 5. The electric wire 2 wired in the hollow portion 4c of the one signal transmission member 4 is
7 is drawn out from a draw-out hole 24 opened in FIG.

As shown in detail in FIGS. 5 to 7, the electric connection means 21 is provided on the outer peripheral surface 4b of one of the signal transmitting members 4.
And a small chamber-shaped electrode tank 21b formed on the inner peripheral surface 5b of the other signal transmission member 5.
And an electrode tank 21b on the inner peripheral surface 5b of the other signal transmission member 5.
And a conductive liquid 21d filled in the electrode tank 21b.

As shown in FIG. 6, the U-shaped electrode piece 21a extends from the outer peripheral surface 4b of one of the signal transmitting members 4 to the hollow portion 4c.
Screw into conductive sleeve 21e embedded
It is fixed at 1f. On the other side of the sleeve 21e,
The electric wire 2 is connected by a screw 21g. The insulating material 21h is embedded around the sleeve 21e. As shown in FIG. 7, the cup-shaped electrode piece 21c is integrally formed with a cup-shaped insulating material 5e made of an insulating synthetic resin material by a resin molding technique or the like, and a part of the other signal transmission member 5 is formed. It is formed as.

Therefore, the cup-shaped electrode piece 21c forms an integrally formed member A integrated with a part of the other signal transmission member 5. The integrally formed member A allows the number of wiring systems of the electric wire 2 to be easily adjusted. Each integrally formed member A is connected by a through bolt 22. Each integrally formed member A is provided with a connection hole 21k into which the screw 21i and the bush 21j are fitted when the electric wire 2 is connected to the cup-shaped electrode piece 21c with the screw 21i.

The fluid passage 3 is disposed inside the two signal transmission members 4 and 5 in parallel with the rotation axis L. The fluid passage 3 is connected to a pipe 25 connected to the cover plate 17 on one signal transmission member 4 side, and connected to a pipe 25 connected to the signal transmission member 5 on the other signal transmission member 5 side. .
As shown in FIGS. 3 and 5, the fluid passage 3 is provided at two positions on each of the signal transmission members 4 and 5 at appropriate positions not interfering with the electric connection means 21 and the like.
And a rotating body (not shown) connected to the outside and a fluid can be exchanged between the outside and the piping 25.
Each location is provided (although only one location is shown in FIG. 1).

The connecting means 23 of the fluid passage 3
The connection path 23a whose direction is arranged at right angles to the outer peripheral surface 4b and the inner peripheral surface 5b of the signal transmission members 4 and 5 and the inner peripheral surface 5b of the other signal transmission member 5 are provided annularly. It is composed of a communication groove 23b and annular sealing members 23c provided on both sides of the communication groove 23b.

According to the rotary coupler 100 of this embodiment, the optical fiber 1 is wired on the rotation axis L, and the connection means 20 of the optical fiber 1 is connected to the signal transmission members 4 and 5 on the surface orthogonal to the rotation axis L. Since the signal transmission members 4 and 5 are provided on the front end surface 4a and the inner end surface 5a and are supported by the bearings 6, 7, and 8, the rotation of the other signal transmission member 5 causes the optical fiber 1 to have an axial displacement. The size is very small. Although this axis shift varies depending on the accuracy of the bearing used, even if a bearing with poor accuracy is used, such an axis shift is easily absorbed by the ball lens 20b of the connecting means 20 of the optical fiber 1. be able to.

The electric connection means 21 and the fluid passage 3
The connection means 23 also exhibit an effective rotary connection function. Therefore, it is possible to compactly cope with recent information transmission in high-precision machine tools and processing machines.

In particular, even if the electric connection means 21 and the connection means 23 of the fluid passage 3 rub against each other due to the rotation of the other signal transmission member 5, the connection means 20 of the optical fiber 1 moves in a direction perpendicular to the rotation axis. Since there is no deviation, the axis deviation of the optical fiber 1 is effectively prevented. The electric connection means 21
The use of the conductive liquid 21d to avoid mechanical rubbing also contributes to the prevention of the axial deviation of the optical fiber 1.

Further, since the spacing S is ensured between the ball lenses 20b facing the connecting means 20 of the optical fiber 1, wear of the ball lenses 20b is prevented. Therefore,
Sufficient durability is obtained for the connecting means 20 of the optical fiber 1.

With the coil winding device 200 having the rotary coupler 100, the electric signal has three channels (which can be added if necessary), the optical fiber signal has one channel, and the fluid of air, water, oil, gas or the like. A passage for exchange (cooling and heating of the rotating coil winding device, moving the cylinder, etc.) is secured, and based on the acquired data, the energization control of the coil winding device is performed and the operation state is analyzed. It can be used effectively for such purposes.

The rotary coupler 100 is not limited to a coil winding device, and may be used for a rotating machine (for example, a wind generator, a turntable such as a ferris wheel, a radar such as a ship, an ITV camera, etc.). It can be easily applied in the same manner as the wire device.

[0040]

As described above, in the coil winding device according to the present invention, the end face where the two relatively rotating signal transmission members abut, the outer peripheral surface of one signal transmission member and the other signal transmission member are separated. An optical fiber connection means having a contact surface with which the inner peripheral surface is in contact, and provided at the center of the rotation axis of the end surface,
Since it has the rotary coupler provided with the electric connection means and the fluid connection means provided on the contact surface, the misalignment of the optical fiber connection means is prevented, and the electric connection means is easily multilayered, Fluid can be exchanged by means of the fluid connection means, so that it is possible to control the energization of the coil winding device and to effectively use it for analyzing the operation state.

[0041] This effect enables a compact configuration to transmit and control information not only for the coil winding device but also for recent high-precision machine tools, processing machines, and many other machines. The effect that it can do is produced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a rotary coupler used in an embodiment of a coil winding device according to the present invention.

FIG. 2 is a central sectional view of FIG.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is an enlarged view of a main part of FIG. 2;

FIG. 5 is a sectional view taken along line YY of FIG. 2;

FIG. 6 is an enlarged view of another main part of FIG. 2;

FIG. 7 is an enlarged view of still another main part of FIG. 2;

FIG. 8 is a configuration diagram showing an embodiment of a coil winding device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical fiber 2 Electric wire 3 Fluid passage 4 Signal transmission member (one) 4a Front end surface (end surface) 4b Outer peripheral surface (peripheral surface) 5 Signal transmission member (the other surface) 5a Inner end surface (end surface) 5b Inner peripheral surface (peripheral surface) 5e Insulating material 20 Connecting means (of optical fiber) 20a Ball lens holder 20b Ball lens 20c Spacer 21 Connecting means (electric) 21a, 21c Electrode piece 21d Conductive liquid 23 Connecting means (of fluid passage) 100 Rotary coupler 200 Coil winding device A Integrally formed member

Continuation of the front page (72) Inventor Ikuhisa Akai 1-8-8 Sato, Hamamatsu-shi, Shizuoka Daiwa Electronics Co., Ltd. (72) Inventor Hiroshi Togoku 1-8-8 Sato, Hamamatsu-shi, Shizuoka Daiwa Electronics Co., Ltd. Company F-term (reference) 5E002 AA05

Claims (5)

[Claims] 1. An end face at which two signal transmission members that rotate relative to each other by rotating at least one of them, and an outer peripheral surface of one of the signal transmission members and an inner peripheral surface of the other signal transmission member contact each other. Coil winding having a surface, a rotary coupler having an optical fiber connection means provided at the center of the rotation axis of the end face, and an electric connection means and a fluid connection means provided on the contact surface apparatus. 2. The coil winding device according to claim 1, wherein the optical fiber connecting means has a rotary coupler composed of a ball lens facing in a space. 3. The coil winding device according to claim 2, wherein the space between the ball lenses facing each other has a ball lens holding body for holding the ball lenses and a rotary coupler sealed with a ring-shaped spacer. Coil winding device. 4. The coil winding device according to claim 1, wherein the electric connection means includes a rotary coupler filled with a conductive liquid between electrode pieces fixed to each signal transmission member. A coil winding device comprising: a coil winding device; 5. The coil winding device according to claim 1, wherein at least one of the signal transmission members is formed integrally with an electrode piece of an electric connection means and an insulating material to which the electrode piece is fixed. A coil winding device comprising a rotary coupler in which the integrally formed member is laminated along a rotation axis.