JPH0570292B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic device configured to bend an insulated wire at right angles when an automatic winding machine starts winding a coil.

[Conventional technology]

FIG. 6A is an explanatory diagram schematically depicting an example of a state in which the coil 2 is wound around the bobbin 1.

The wire is tied to pin 3 and passed through groove 4 to point a
along the bobbin 1 parallel to the axis until this point a
It is bent at right angles and wound in the circumferential direction. This operation is called squaring the starting line.

After winding the coil 2, it is bent at a right angle at point b, passed through the groove 4, and attached to the pin 3. This operation is called squaring the finish line.

When winding the coil 2 manually while attaching the bobbin 1 to the main shaft (not shown) and rotating it,
The start line and finish line are squared up depending on the skill and effort of the workers.

However, when winding a coil using an automatic winding device, it is very difficult to automatically set the start line and finish line at right angles.

It has also been proposed to provide a protrusion or groove (not shown) near point a on the surface of the bobbin 1 in order to facilitate the work of straightening the starting line. However, there is a risk of the electric wire coming off the protrusion or groove, so there is a problem with reliability.

Moreover, since the second and subsequent layers of the multilayer coil are wound without contacting the bobbin, providing protrusions or grooves on the bobbin has no effect.

If the shape and dimensions of the coil are not strictly specified, omit the starting line at right angles as shown in Fig. 6B, and use the starting line 5, which is tied to the pin 3 and passed through the groove 4, in a spiral shape. , the coil 2 is wound after being wound around the bobbin 1 with a coarse pitch.

In addition, when the shape and dimensions of the coil are not strictly specified, the finishing wire 6 may be omitted at right angles, and as shown in FIG. 4 and is connected to pin 3.

[Problem to be solved by the invention]

With the development and progress of electronic technology, the electrical performance requirements for coils have become significantly more sophisticated.For example, in coils for switching transformers, it is strictly required that the start line and finish line be at right angles.

For this reason, there is a demand for the development of a device that can square the start line and finish line in an automatic winding machine.

If we consider an automatic winding machine in which the object to be wound (for example, a bobbin) is attached to the main shaft and rotated at high speed, it is relatively easy to automatically square the finish wire, but it is very difficult to automatically square the start wire. However, it has not been developed yet. The reason is as follows.

The finishing wire straightening operation is the processing of the finishing wire after the winding of the coil has been completed.
Therefore, the work can be carried out by stopping the rotation of the object to be wound, and if known robotic technology is applied, the operation of bending the finishing wire at right angles is not particularly difficult.

However, since the operation of straightening the start wire is performed when starting coil winding, the work must be performed while rotating the object to be wound. For this reason, it is difficult to automatically square the starting line by applying known techniques.

The present invention was made in view of the above circumstances, and
An object of the present invention is to provide a device that can automatically straighten a start wire in a winding machine that winds a coil by rotating a member to be wound.

[Means to solve the problem]

The basic principle of the present invention created to achieve the above object will be explained with reference to FIG. 2B, FIG. 3B, and FIG. I will explain next.

1 shown in FIG. 2B is a bobbin, which is rotated around the axis X--X.

Before starting the rotation of the bobbin 1, the nozzle 1
Move 4 as shown by arrow e to move start line 17a to
Pull out parallel to the axis. As shown in FIG. 3B, a presser 12 is provided to press the start line 17a. This holding tool 12 has a structure that allows it to press down on the start line, release it, and retreat.

As shown in FIG. 4B, when the bobbin 1 is rotated in the direction of the arrow g, the electric wire pulled out from the nozzle 14 is wound around the circumferential direction of the bobbin 1. It must have the ability to rotate together with the bobbin 1 as shown by arrow g' while being held down.

As a specific configuration for achieving the above-mentioned object (automatic right-angle insertion) based on the above-mentioned principle, the device of the present invention has a rotating main shaft on which a member to be wound is mounted;
A winding machine having a nozzle for supplying an insulated wire to the above-mentioned member to be wound, a synchronous rotating shaft arranged concentrically with the main shaft, and a synchronous rotating shaft synchronized with the main shaft. and a drive unit that rotates the synchronous rotating shaft, and the synchronous rotating shaft is equipped with a holding device having a structure that can be moved into contact with and separating from the member to be wound, and the synchronous rotating shaft The synchronous drive section that rotates the main shaft in synchronization with the main shaft has a drive state that causes the synchronous rotation,
It is characterized by a structure that allows switching between a state in which the drive is stopped and a state in which the drive is stopped.

However, the above-mentioned synchronous drive section may have a structure in which the rotational force is mechanically transmitted from the main shaft, or may have a structure in which rotational force is generated by receiving an electric signal.

Therefore, the drive state switching means may be a mechanical component such as a clutch, or an electrical component such as a switch.

In addition to the above configuration, a pressure roller that is driven toward and away from the wire-wound member mounted on the main shaft, and an adhesive tape inserted between the pressure roller and the wire-wound member. It is recommended that the main shaft be configured so that it can be controlled in reverse.

[Effect]

According to the above configuration, when the part to be bent perpendicularly to the start line is pressed with the presser and the main shaft is rotated while the presser is kept pressed to rotate the wire-wound member,
The starting line is bent at right angles where it is pressed.

At this time, since the above-mentioned presser can rotate in synchronization with the member to be wound (that is, at the same time as the member to be wound, in the same direction, at the same speed, and by the same angle), the rotation of the member to be wound is possible. do not interfere with Therefore, coil winding is started smoothly.

When performing the above-mentioned right-angle bending action, if the diameter of the wire is small, the starting wire 17 is
The electric wire fed out from the nozzle 14 while holding down the wire a can be routed as shown in the winding wire 17b shown in FIG. 4B. Moreover, if the diameter of the electric wire is large and the force required to bend it is large, the nozzle 14 may be routed so as to hook the start line on a presser and bend it.

Further, as described in the section of the means above, a means for supplying the adhesive tape and a roller for pressing the adhesive tape toward the member to be wound are provided, and the member to be wound is mounted. If the main shaft is reversible and the reverse rotation can be controlled, it is possible to fix the perpendicular state by pasting adhesive tape on the part where the wire is bent at a right angle as described above. , subsequent operation is easy.

〔Example〕

FIG. 1 shows a winding machine equipped with an embodiment of an automatic straightening device for a start line according to the present invention, and is an explanatory diagram schematically depicting the main parts thereof.

A bobbin 1, which is a member to be wound, is mounted concentrically on the main shaft 7, and is rotated at high speed (15,000 rpm) by a main shaft drive section 8. This main shaft drive unit 8 has the function of rotating the bobbin 1 at high speed as described above as a winding operation, and the function of rotating the bobbin 1 accurately at a low speed within a range of several tens of degrees to a hundred and several tens of degrees, as will be described later with reference to FIG. It also has a reverse function.

The illustrated axis X-X indicates the rotation center axis of the main shaft 7.

The synchronous rotating shaft 9 is rotated by the synchronous drive section 10 in the same direction as the main shaft 7, at the same speed, and through the same angle.

Reference numeral 11 denotes a movable base, which rotatably supports the above-mentioned synchronous rotating shaft concentrically with the axis is reciprocated in the X-axis direction as shown by arrow c.

The synchronous drive unit 10 of this embodiment is driven by a main shaft drive unit 8 via a synchronous transmission system 15 consisting of a rotating shaft, a pulley, and a timing belt (all not shown), and drives a synchronous rotating shaft 9. It has a function of rotating in synchronization with the main shaft 1.

The synchronous transmission system 15 is provided with a clutch 16, and the synchronous rotation of the synchronous rotating shaft 9 can be driven or stopped by engaging and disconnecting the clutch 16.

The synchronous drive unit 10 of this example is the synchronous transmission system 1 described above.
Separately from 5, the reverse drive unit 2 is connected via a clutch 22.
It is also connected to 3. As a result, clutch 1
6 as "disconnected" and clutch 22 as "connected",
It is constructed so that the synchronous rotation shaft 9 can be reversed. The above-mentioned reversal is controlled at a relatively low speed so that the rotation is accurately performed in the reverse direction within a range of several tens of degrees to a hundred and several tens of degrees.

The above-mentioned reverse rotation means rotation in the opposite direction to the rotation (normal rotation) in the operation of winding the coil.

The synchronous drive unit 10 of this embodiment is configured to rotate the synchronous rotating shaft 9 in the forward and reverse directions using the mechanical transmission means and the mechanical clutch as described above, but when carrying out the present invention, Instead of mechanical transmission means and mechanical clutches, electrical control means can also be used.

In short, the configuration may be such that the synchronous rotating shaft 9 can be rotationally driven in synchronization with the main shaft 1, and the above-mentioned rotational drive can be controlled to start and stop.

It is recommended that the synchronous rotating shaft 9 be constructed so that it can be reversed in an angle-controllable manner.

Reference numeral 12 denotes a presser that is configured to press the electric wire 17 by bringing its tip close to the bobbin 1. The base end of the presser is attached to the synchronous rotating shaft 9 via the presser driving means 13, and the reciprocating arrow d
It is driven reciprocatingly in the direction perpendicular to the X-axis.

20 is an adhesive tape, and 18 is a roller that presses the adhesive tape 20 toward the bobbin 1.
These members will be described in detail later with reference to FIG.

Reference numeral 14 denotes a nozzle that feeds and feeds the electrical wire 17 coated with insulation while applying a certain tension.

FIGS. 2 to 4 are explanatory diagrams of the operation for straightening the start line in the above embodiment, and in each figure, figure A is a schematic view as seen in the axial direction of the bobbin 1, and figure B is a schematic perspective view. It is a diagram.

As shown in FIG. 2B, the nozzle 14 moves parallel to the X-axis as shown by arrow e while feeding out the insulated wire 17, and stretches the start line 17a along the bobbin 1 in the X-axis direction. In FIG. 2A, the cross section of the start line (X-axis direction) 17a is shown as a small circle.

As shown in FIGS. 3A and 3B, the start line 17a is pressed toward the bobbin 1 by the presser 12.

While holding down the start line 17a with the presser 12, the bobbin 1 is rotated in the forward rotation direction as indicated by the arrow g, as shown in FIGS. 4A and 4B.

The normal rotation of the bobbin 1 described above is performed by rotationally driving the main shaft 7 shown in FIG. 12 is rotated as shown by arrow g'. This operation is performed by the synchronous rotation (synchronous rotation with the main shaft 7) of the synchronous rotating shaft 9 that supports the presser 12 as shown in FIG.

Therefore, between the state shown in FIG. 3 and the state shown in FIG. 4, the bobbin 1, start line 17a, and presser
The relative position with respect to that does not change.

The imaginary line 14 in FIG. 4B indicates the position of the nozzle 14 in FIG. 3B. In the state shown in FIG. 4B, the above nozzle is connected to the winding wire 17b.
It is moving to the 14' position drawn by the solid line while letting out the . In FIG. 4A, the nozzle at position 14 and the nozzle at position 14' overlap.

As described above, the bobbin 1 rotates as indicated by the arrow g, and the presser 12 rotates as indicated by the arrow g', and
By moving the nozzle at the 14th position to the 14' position, the boundary between the start line 17a and the winding line 17b is bent at a right angle while being pressed by the presser 12, and a right-angle operation is performed.

In this example, after the start line is squared as shown in FIG.
As shown in Figures A to D, an adhesive tape is attached near the right-angled portion to fix the right-angled state.

FIG. 5A shows a state in which the bobbin 1 is further rotated in the direction of arrow g from the state shown in FIG. 4A. The winding wire 17b is wound about half the circumference of the bobbin 1, and the start wire 17a is held down by the presser 12.

A pressure roller 18 is located a little apart from the bobbin 1. This pressing roller 18 is driven in the direction toward and away from the bobbin 1 by a driving means (not shown).

On the other hand, the tape feed roller 19
is fed out, and its tip is inserted between the pressing roller 18 and the bobbin 1 (more specifically, between the electric wire 17b wound around the bobbin 1). 21 is a tape cutter.

As shown in FIG. 5B, when the pressure roller 18 is pressed toward the bobbin 1 as indicated by the arrow j, the adhesive tape 20 is brought into contact with the winding wire 17b and the bobbin 1.

Next, as shown in FIG. 5C, move the bobbin 1 in the direction of arrow h.
When the direction is reversed, the pressure roller 18 adheres the adhesive tape 20 to the bobbin 1 and the winding wire 17b.

At this time, the presser 12 releases the pressure on the start line 17a and retreats.

The above-mentioned press release/retreat operations are performed by moving the presser drive means 13 in the reciprocating direction of arrow d and moving the movable base 11 in the reciprocating direction of arrow c shown in FIG.

The reversal in the direction of the arrow h shown in FIG. 5C means that the adhesive tape 20 is
7a, the adhesive tape 21 is cut with the cutter 21, and the cut end is placed on the pressure roller 1.
When it is attached to the bobbin 1 by 8, the reverse rotation in the direction of arrow h is stopped and high speed rotation in the direction of arrow i is started, and the winding operation is started.

In the above-mentioned operation, changing the rotation direction of the bobbin 1 as shown by arrow g, arrow h, and arrow i is as follows:
Clutches 16 and 22 shown in FIG.
This is done by automatic operation of “off” operation.

〔Effect of the invention〕

As explained above, when the automatic start line straightening device of the present invention is applied to a winding machine that winds a wire by rotating a member to be wound, it is possible to automatically square the start line. It has an excellent practical effect in that it allows the starting line to be squared, and it greatly contributes to the full automation of high-precision coil winding work that requires the starting line to be squared.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram showing a winding machine equipped with an embodiment of an automatic starting line straightening device according to the present invention. Figures 2 A, B, and 3
FIGS. A and B and FIGS. 4A and 4B are explanatory diagrams of the operation to square the start line in the above embodiment.
FIGS. 5A, B, C, and D are explanatory diagrams of the fixing operation of the right-angle portion in the embodiment. Figure 6A,
B and C are explanatory diagrams of the work of aligning the start line and finish line at right angles in the coil winding work. 1...Bobbin, 2...Coil, 3...Pin, 4
... Groove, 7 ... Main shaft, 8 ... Main shaft drive section, 9 ...
Synchronous rotating shaft, 10... Synchronous drive section, 11... Moving base, 12... Holder, 13... Holder driving means, 14, 14'... Nozzle, 15... Synchronous transmission system, 16... Clutch , 17...Insulated electric wire, 17a...Start wire, 17b...Wound wire, 18...Press roller, 19...Tape feed roller, 20...Adhesive tape, 21...Cut, 2
2...Clutch, 23...Reverse drive unit.

Claims (1)

[Scope of Claims] 1. A winding machine having a main shaft that rotates with a member to be wound attached thereto, and a nozzle for supplying an insulated wire to the member to be wound, the winding machine being concentric with the main shaft. a synchronous rotating shaft disposed in the main shaft; and a drive unit configured to rotate the synchronous rotating shaft in synchronization with the main shaft, and the synchronous rotating shaft has a structure in which the synchronous rotating shaft is in contact with a member to be wound. - A wire winding characterized in that a presser with a structure that allows separation operation is attached, and the drive unit that rotates the synchronous rotating shaft is capable of driving and stopping the synchronous rotating shaft. Machine start line automatic straightening device. 2. A pressing roller disposed opposite to the wire-wound member attached to the main shaft, and a pressing roller that approaches the wire-wound member toward the wire-wound member.
It is characterized by comprising means for driving reciprocatingly in the direction of separating them, and tape supply means for inserting an adhesive tape between the pressing roller and the member to be wound, and the main shaft can be controlled in reverse. An automatic start line straightening device for a winding machine according to claim 1.