JP2003134752A - Method and device for processing winding terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the complication of a mechanism for removing surplus lengths of wire rods extended from a holding mechanism, and to respond to the downsizing of a coil. SOLUTION: A device for processing a winding terminal comprises: a bobbin 1 wherein a plurality of lead pins 2 are arranged to which wind-start terminals and wind-end terminals of a plurality of wire rods X, Y that are wound by one turn are individually entangled; the holding mechanism 4 that holds the surplus lengths cut from the wind-start and wind-end terminals of the wire rods X, Y; and a transfer mechanism that relatively transfers the bobbin 1 and the holding mechanism 4. The holding mechanism 4 comprises a plurality of holding pieces 41, 42 that are detachable and individually sandwich the respective surplus lengths of the wire rods X, Y. The holding pieces 41, 42 of the holding mechanism 4 are phase-arranged relative to the alignment of the lead pins 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field relating to a winding terminal treatment of a wire rod when winding a coil incorporated in a stepping motor as a stator or the like.

[0002]

2. Description of the Related Art In a coil incorporated in a stepping motor as a stator or the like, a plurality of wire rods (usually two) are wound around the bobbin by one winding (winding in one direction at the same time). The winding start end and winding end end of each wire wound on the bobbin are individually entwined with a plurality of lead pins provided on the bobbin. Then, the excess length portion of each wire which is not entwined with the lead pin at the winding start end and the winding end end is subjected to a winding end treatment for cutting from the entanglement boundary end to the lead pin.

Conventionally, as a winding end treatment technique, for example, an extra length portion of each wire is held by being entwined with a holding mechanism composed of a single entwining pin, and the extra length is obtained by relative movement of the bobbin and the holding mechanism. It is known to apply a tensile force to a part to cut it.

In this conventional winding end treatment technique, the extra length of the winding start end of each wire rod held by being held by the holding mechanism is wired up to the lead pin, and the winding start end is cut every time it is entangled with the lead pin. The extra length portion of the winding end of each wire entwined with the lead pin is wired to the holding mechanism and entangled with the holding mechanism to be cut each time it is held. Wiring of the extra length portion of the wire rod is performed by relative movement of the nozzle to which the wire rod is supplied, the bobbin, and the holding mechanism.

[0005]

In the above-described conventional winding end treatment technology, the extra length of the wire rod held by being entangled with the holding mechanism is biased by the winding mechanism. Removing the portion is troublesome, and the extra length portion of the wire rod may jump when the extra length portion of the wire rod is removed from the holding mechanism. Therefore, there is a problem that the structure of the mechanism for removing the extra length portion of the wire from the holding mechanism becomes complicated.

Further, since the holding mechanism has a single entwining pin and has a common holding point for the extra length portion of the wire, when the lead pin arrangement interval becomes narrow, the wiring or the winding of the extra length portion of the wire rod is wound. When the start end and the winding end end are entwined, the extra length portions of the wire material interfere with each other, and there is a problem that the coil cannot be made smaller.

As a means for preventing the contact between the extra length portions of the above-mentioned wire rods, the nozzle for supplying the non-entangled wire rods is retracted in an appropriate direction to secure the interval between the extra length portions of the wire rods. It is possible. However, if the nozzle has a retracting structure, the structure around the nozzle becomes complicated,
As a result, the coil becomes larger and it becomes impossible to cope with the size reduction of the coil.

The present invention has been made in view of the above problems, and does not complicate the structure of the mechanism for removing the extra length of the wire from the holding mechanism, and corresponds to the miniaturization of the coil. An object of the present invention is to provide a winding terminal processing method that can be performed and a winding terminal processing apparatus suitable for implementing the winding terminal processing method.

[0009]

Means for Solving the Problems In order to solve the above-mentioned problems, the winding terminal processing method according to the present invention employs the following means.

That is, as described in claim 1, a plurality of wire rods are wound around the bobbin with one winding, and the winding start end and winding end end of each wire rod are attached to a plurality of lead pins provided on the bobbin. In the winding terminal treatment method, in which the extra lengths of the winding start end and the winding end end of each wire are individually entangled and held by the holding mechanism and cut by the relative movement of the bobbin and the holding mechanism The extra length of the winding start end of each wire that is sandwiched and held by is wired to the lead pin one by one, and the winding start end is cut each time it is entwined with the lead pin, and the winding end of each wire entangled with the lead pin is cut. The extra length of the terminal is wired up to the holding mechanism one by one, and the terminal is cut every time it is held by being sandwiched at different positions of the holding mechanism.

With this means, the extra length of the wire is sandwiched and held by the holding mechanism to prevent the extra length of the wire from being urged. Then, by holding the extra length portion of each wire at different positions of the holding mechanism, contact interference between the extra length portions of each wire is prevented.

Further, in order to solve the above-mentioned problems, the winding terminal processing device according to the present invention employs the following means.

That is, as described in claim 2, a bobbin provided with a plurality of lead pins with which a winding start end and a winding end end of a plurality of wire rods wound by one winding are individually entangled. In a winding terminal processing device provided with a holding mechanism for holding a winding start end of each wire and an excess length portion to be cut of the winding end end, and a bobbin, a moving mechanism for relatively moving the holding mechanism,
The holding mechanism is provided with a plurality of holding pieces that can be inserted and removed by individually sandwiching the extra length portion of each wire, and each holding piece of the holding mechanism is arranged in phase with the arrangement of the lead pins. And

In this means, the extra length portion of the wire is sandwiched and held at different positions by the plurality of phased holding pieces of the holding mechanism.

Further, as described in claim 3, claim 2
In the winding terminal processing device, the lead pins are arranged on a line parallel to the tangent line of the bobbin, and the holding pieces of the holding mechanism are phased in the radial direction of the bobbin and are gathered on one side of the bobbin.

With this means, the holding mechanism is concentrated on one side of the bobbin.

[0017]

Embodiments of a winding terminal processing method and a winding terminal processing apparatus according to the present invention will be described below with reference to the drawings.

First, the configuration of an embodiment of a winding terminal processing device according to the present invention will be described.

This embodiment is composed of a bobbin 1, a lead pin 2, a nozzle 3, a holding mechanism 4, and a moving mechanism (not shown).

In the bobbin 1, ring-plate-shaped flanges 12 are provided on both end surfaces of a cylindrical body portion 11, and a square lead pin mounting surface 13 is formed on one of the flanges 12.
The bobbin 1 is connected to a horizontally arranged spindle 5 and rotated to wind main wires Xa and Ya of two wire materials X and Y having the same diameter supplied from above.

As shown in detail in FIG. 2, the lead pin 2 has four prisms each having two types of lengths a and b, which are arranged in a direction opposite to the body portion 11 from the lead pin mounting surface 13 of the bobbin 1. It is projected. The lead pins 2 are arranged in a staggered manner on the line parallel to the tangent line of the bobbin 1 at the same intervals c,
The winding start ends Xb and Yb of the wound wire rods X and Y and the winding end ends Xc and Yc of the wound wire rods X and Y are entwined.

In the nozzle 3, a pair of nozzle tubes 31 through which two wire rods X and Y are respectively supplied are connected by a connecting bar 32, and a guide roller for guiding the wire rods X and Y in the vicinity of the nozzle tube 31. 33 is provided. The distance d between the nozzle tubes 31 is set longer than the distance c between the lead pins 2. The nozzle 3 is connected to an undulating mechanism (not shown) so that the nozzle tube 31 can be changed between a position where the axis is orthogonal to the axis of the bobbin 1 and a position where the axis is parallel to the axis of the bobbin 1. . A tension mechanism (not shown) that prevents the wire rods X and Y from slackening is installed on the supply side of the wire rods X and Y with respect to the nozzle 3.

The holding mechanism 4 includes an extra length portion X of the wire rods X and Y.
It is provided with two clip-shaped holding pieces 41 and 42 that can be inserted and removed by sandwiching d and Yd in a linear state. In the holding pieces 41 and 42, the holding points of the extra length portions Xd and Yd of the wire rods X and Y are phased in the vertical direction which is the axial direction of the bobbin 1. The holding pieces 41, 42 have wire rods X, Y formed by opening and closing.
An attachment / detachment drive mechanism (not shown) for driving attachment / detachment of the extra length portions Xd, Yd of the above and an elevating mechanism (not shown) for vertically moving the holding pieces 41, 42 are connected.

The moving mechanism is composed of a plurality of drive systems by a servo motor and an air cylinder. At least 1
One drive system moves at least one of the lead pin 2 (bobbin 1), the nozzle 3 and the holding mechanism 4 three-dimensionally, and the extra length portion Xd of the wire rods X and Y is interposed between the lead pin 2 and the holding mechanism 4. , Yd are wired, and the lead pin 2 has a function of entwining the winding start terminals Xb, Yb and winding end terminals Xc, Yc of the wire rods X, Y. At least one other drive system moves at least one of the lead pin 2 (bobbin 1) and the holding mechanism 4, and the winding start end Xb of the wire rods X and Y wired between the lead pin 2 and the holding mechanism 4. , Yb is disconnected.

According to the configuration of this embodiment, the nozzle 3
Since both nozzle pipes 31 are integrated by the connecting bar 32 and the retracting structure as described above is not provided in the nozzle 3, the structure around the nozzle 3 is prevented from becoming complicated and large. Therefore, miniaturization of the coil can be dealt with.

Next, an embodiment of the winding terminal processing method according to the present invention will be described based on the operation and operation of the embodiment of the winding terminal processing device according to the present invention.

At the start of winding the wire rods X and Y, as shown in FIG. 3, the extra length portions Xd and Yd of the wire rods X and Y are individually sandwiched and held by the holding pieces 41 and 42 of the holding mechanism 4. There is.
The lead pin 2 is located on the upper side of the bobbin 1. Further, the nozzle 3 is tilted so that its axis is parallel to the axis of the bobbin 1.

First, the moving mechanism relatively moves the nozzle 3, the lead pin 2 (bobbin 1), and the holding mechanism 4,
The nozzle tube 31 on the left side in the drawing of the nozzle 3 faces the second short lower lead pin 2 from the left side in the drawing. At this time, the extra length portions Xd, Yd of the wire rods X, Y are pulled out from the both nozzle tubes 31 of the nozzle 3, respectively, but the holding pieces 41, 42 of the holding mechanism 4 for the extra length portions Xd, Yd are used. Since the holding points of are phased, both extra length portions Xd,
Yd does not cause contact interference. Therefore, the lead pin 2
Even in the case of a small coil with a short interval c, the extra length X
This can be dealt with by adjusting the phases of the holding points of d and Yd.

Subsequently, as shown in FIG. 3, the nozzle 3 and the lead pin 2 (bobbin 1) are relatively moved by the moving mechanism, and the winding start of the wire X passed and supplied from the nozzle tube 31 on the left side of the nozzle 3 in the drawing. The terminal Xb is entwined with the second short lead pin 2 on the lower side from the left side of the drawing. Also at this time,
The extra length portions Xd and Yd do not interfere with each other due to the phase of the holding point. Further, since the distance d between both nozzle tubes 31 of the nozzle 3 is longer than the distance c between the lead pins 2, the extra length portion Yd of the other wire material Y which is not entangled is not caught on the lead pins 2. .

Subsequently, as shown in FIG. 4, the relative movement of the nozzle 3 and the lead pin 2 (bobbin 1) by the moving mechanism is stopped, and the lead pin 2 (bobbin 1) is moved by the moving mechanism.
And the holding mechanism 4 are relatively moved, and a tensile force is applied to the extra length portion Xd of the wire X in which the winding start end Xb is entwined with the lead pin 2. As a result, the extra length portion Xd of the wire X is cut from the lead pin 2. At this time, the prismatic lead pin 2 functions as a cutting blade for the extra length portion Xd of the wire X.

After the extra length portion Xd of the wire X is cut from the lead pin 2, the holding piece 41 of the holding mechanism 4 is immediately driven to open by the attachment / detachment drive mechanism, and the extra length portion Xd of the wire X is released.
Is released and removed from the holding piece 41.

Next, as shown in FIGS. 5 and 6, the extra entanglement length portion Yd of the winding start terminal Yb is also cut on the other wire Y. The operation and operation of the other wire rod Y are almost the same as those of the above-mentioned one wire rod X, and after the extra length portion Yd of the wire rod Y is cut from the lead pin 2, the holding mechanism is immediately operated by the attachment / detachment drive mechanism. Holding piece 4
2 is driven to open, and the holding of the extra length portion Yd of the wire Y is released and removed from the holding piece 42. The lead pin 2 around which the winding start end Yb of the wire Y is entangled is the shortest lower end on the rightmost side of the drawing.

Further, the extra length X of the wire X from the holding piece 41
To remove d, after the extra length portion Yd of the wire Y is cut from the lead pin 2, the holding pieces 41 and 42 of the holding mechanism 4 are opened and driven by the attachment / detachment drive mechanism, and the extra length portion X of the wire X and Y is removed.
It is also possible to release the holding of d and Yd and remove them simultaneously from the holding pieces 41 and 42.

As means for removing the extra length portions Xd, Yd of the two wire rods X, Y from the holding pieces 41, 42, in addition to blowing and suction by air, the holding pieces 41, 42 of the holding mechanism 4 are used.
Is likely to fall downward. Both wires X, Y
Of the extra length portions Xd and Yd of
Since there is no winding bias unlike the above-mentioned conventional example, it can be easily performed without complicating the structure for removal. The holding pieces 41, 42 of the holding mechanism 4 are maintained in the open state until the time described later.

When the end treatment of entwining and cutting the winding start sides of both wire rods X and Y is completed, the nozzle 3 is erected by the undulating mechanism and the bobbin 1 is rotated by the spindle 5 as shown in FIG.
The main wires Xa and Ya of both wire rods X and Y are wound around the body portion 11 of the bobbin 1 in a single turn.

When the winding of both wire rods X and Y onto the bobbin 1 is completed, the nozzle 3 is tilted again by the undulating mechanism, and the nozzle 3 and the lead pin 2 (bobbin 1) are held by the moving mechanism, as shown in FIG. The mechanism 4 is relatively moved, and the nozzle tube 31 on the left side of the nozzle 3 in the drawing faces the longest lead pin 2 on the leftmost side in the drawing. At this time, the nozzle 3
From both nozzle tubes 31 of the extra length portions Xd, Yd of the wire rods X, Y
Although the (winding end terminals Xc, Yc) are pulled out, the extra length portions Xd, Yd (winding end terminals Xc, Yc) are respectively wound on the main lines Xa, Ya wound on the body portion 11 of the bobbin 1. Since the lead pin mounting surface 13 of the bobbin 1 is continuously crossed and the nozzle 3 of the nozzle 3 is widened at the interval d between the nozzle tubes 31, both extra length portions Xd, Yd (winding end terminals Xc, Yc) interfere with each other. There is no such thing.

Subsequently, the nozzle 3 and the lead pin 2 (bobbin 1) are moved relative to each other, and the winding end terminal Xc of the wire X, which is supplied from the nozzle tube 31 on the left side of the nozzle 3 in the drawing, is located at the leftmost long upper part of the drawing. It is entwined with the lead pin 2 on the side. Also at this time, both extra length portions Xd from the above-mentioned crossover and expansion,
Yd (winding end terminals Xc, Yc) does not cause contact interference. Further, since the distance d between both nozzle tubes 31 of the nozzle 3 is longer than the distance c between the lead pins 2, the extra length portion Yd of the other wire Y which is not entangled (winding end terminal Yc).
Does not get caught on the lead pin 2.

When the winding of the winding end end Xc of the wire X to the lead pin 2 is completed, as shown in FIG. 9, the relative movement between the nozzle 3 and the lead pin 2 (bobbin 1) by the moving mechanism is stopped, and the moving mechanism is moved. The nozzle 3, the lead pin 2 (bobbin 1), and the holding mechanism 4 are moved relative to each other, and the winding end terminal Xc
The extra length portion Xd of the wire X after the entanglement is wired to the holding piece 41 of the holding mechanism 4 near the bobbin 1 and passed. At this time, it is possible to avoid contact of the extra length portion Xd of the wire rod X with another lead pin 2 by making the end of the winding end Xc of the wire rod X entwined with the lead pin 2 the protruding tip of the lead pin 2. . Further, when the extra length portion Xd of the wire X passes through the holding piece 41 of the holding mechanism 4, the holding mechanism 4 is lowered by the elevating mechanism to avoid collision with the nozzle tube 31 of the nozzle 3. Then, the holding piece 41 of the holding mechanism 4 near the bobbin 1 is driven to be closed by the attachment / detachment drive mechanism, and the winding end terminal Xc.
The extra length portion Xd of the wire X after the entanglement is held by the holding piece 41 of the holding mechanism 4 near the bobbin 1.

Next, as shown in FIG. 10, the lead pin 2 (bobbin 1) and the holding mechanism 4 are relatively moved by the moving mechanism, and the extra length portion of the wire X in which the winding end terminal Xc is entwined with the lead pin 2. A tensile force is applied to Xd. As a result,
The extra length portion Xd of the wire X is cut from the lead pin 2. At this time, the prismatic lead pin 2 functions as a cutting blade for the extra length portion Xd of the wire X.

Simultaneously with the extra length portion Xd of the wire X, as shown in FIGS.
As shown in FIG. 12, with respect to the other wire Y as well, the entanglement surplus portion Yd of the winding end terminal Yc is cut. The operation and operation of the other wire rod Y is the same as the above-mentioned one wire rod X.
It is almost the same as the case. The lead pin 2 around which the winding end Yb of the wire Y is entangled is the second uppermost side from the right in the drawing. In addition, the winding end terminal Yb of the wire Y has a holding piece 42 on the side opposite to the bobbin 1 of the holding mechanism 4.
Held in.

After this, the bobbin 1 not yet wound on the spindle 5
Are exchange-connected and the above-mentioned winding and winding end processing is continued.

As described above, in addition to the illustrated embodiment, it is also possible to adopt a multi-axis (multi-strip) structure in which a plurality of sets of the bobbin 1 (lead pin 2), the nozzle 3, and the holding mechanism 4 are arranged in parallel.

[0043]

As described above, in the winding terminal treatment method and the winding terminal treatment device according to the present invention, the extra length portion of the wire is wound by being held by the holding mechanism. Since the force is prevented, there is an effect that the structure of the mechanism for removing the extra length portion of the wire from the holding mechanism is not complicated.

Further, since the extra length portion of each wire is held at different positions of the holding mechanism to prevent contact interference between the extra length portions of each wire, there is an effect that it is possible to cope with miniaturization of the coil. .

[Brief description of drawings]

FIG. 1 is a front view of a device configuration showing an embodiment of a winding terminal processing method and a winding terminal processing apparatus according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of FIG.

FIG. 3 is a perspective view of a first step showing an embodiment of a winding end treatment method and a winding end treatment device according to the present invention.

FIG. 4 is a perspective view of a step following FIG.

FIG. 5 is a perspective view of a step following FIG.

FIG. 6 is a perspective view of a process following FIG.

7 is a perspective view of a process following FIG.

8 is a perspective view of a step following FIG. 7. FIG.

9 is a perspective view of a step following FIG. 8. FIG.

FIG. 10 is a perspective view of a step following FIG.

FIG. 11 is a perspective view of a step following FIG.

FIG. 12 is a perspective view of a step following FIG. 11.

[Explanation of symbols]

One bobbin 2 lead pin 3 nozzles 4 holding mechanism 41,42 holding piece X, Y wire Main line of Xa and Ya Xb, Yb winding start terminal Xc, Yc End terminal Xd, Yd Extra length part

Claims (3)

[Claims] 1. A bobbin is wound around a plurality of wire rods with one winding, and a winding start end and a winding end end of each wire rod are individually entwined with a plurality of lead pins provided on the bobbin, In the winding end treatment method in which the excess lengths of the winding start end and the winding end end are held by the holding mechanism and cut by relative movement of the bobbin and the holding mechanism, in the wire rods held by the holding mechanism at different positions. The extra length of the winding start end is wired one by one to the lead pin, and the winding start end is cut each time it is entangled with the lead pin, and the extra length of the winding end end of each wire entwined with the lead pin is set to 1
A winding terminal treatment method, characterized in that wires are wired up to the holding mechanism one by one, and the wires are cut each time the holding mechanism is sandwiched and held at different positions. 2. A bobbin provided with a plurality of lead pins for individually entwining a winding start end and a winding end end of a plurality of wire rods wound by one winding, and a winding start end, winding of each wire rod. In a winding terminal processing device including a holding mechanism for holding a surplus portion of the terminal end to be cut and a moving mechanism for relatively moving the bobbin and the holding mechanism, the holding mechanism individually separates the surplus portion of each wire rod. A winding terminal processing device comprising: a plurality of holding pieces that can be inserted and removed between the plurality of holding pieces, and each holding piece of the holding mechanism is arranged in phase with respect to the arrangement of the lead pins. 3. The winding terminal processing device according to claim 2,
The winding terminal processing device, wherein the lead pins are arranged on a line parallel to the tangent line of the bobbin, and the holding pieces of the holding mechanism are gathered on one side of the bobbin while being phased in the radial direction of the bobbin.