JP2818373B2 - Coil winding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil winding machine for winding a wire supplied from a nozzle onto a rotating bobbin, and more particularly to a structure for replacing a nozzle in such a winding machine.

[0002]

2. Description of the Related Art When replacing a winding wire in a coil winding machine that winds a wire supplied from a nozzle around a rotating bobbin, removing the wire from the nozzle and inserting a new wire requires time for replacement work. It takes. For this reason, a coil winding machine is known in which a nozzle in which various wires are inserted in advance is prepared, and when a different wire is required, the wire is replaced with the nozzle.

For example, in Japanese Utility Model Publication No. 2-49692, a plurality of nozzle bases having fixed nozzles are prepared, and these are selectively attached to an arm movable in three axial directions. Further, the same number of holders for moving the nozzle table as the number of nozzle tables are provided, and a holding mechanism for these holders is provided in a wire supply device for supplying a wire to the nozzle. At the time of nozzle replacement, the empty holder is moved from the wire supply device to the arm to transfer the nozzle table from the arm to the holder, and then moved to the wire supply device to store the nozzle table and the holder in the wire supply device. On the other hand, another holder moves the replacement nozzle table from the wire supply device to the arm, transfers the holder to the arm, and then removes the holder from the nozzle table and returns the holder to the wire supply device.

The holder is provided with a wire clamp driven by an air cylinder for holding the wire so that the wire does not come off the nozzle during storage or movement of the nozzle table, and further provided with a cutter for cutting the wire. Further, in a state where the nozzle unit is mounted on the arm, the end of the wire rod coming out of the nozzle is tied to a temporary tying pin provided in the winding machine so that the wire rod does not come off from the nozzle.

[0005]

In the case of this winding machine, the structure of the holder is complicated and large because each holder is provided with a wire clamp and an air cylinder for driving the cutter, and the coil is provided by providing a plurality of these holders. There was a problem that the manufacturing cost of the winding machine was increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a coil winding machine having a nozzle exchange mechanism having a simple configuration.

[0007]

According to the first aspect of the present invention, a plurality of nozzle units for supplying a wire from a nozzle under a predetermined tension, a spindle for mounting and rotating a bobbin, and a nozzle unit are provided. A coil for winding a wire supplied from the nozzle unit supported by the arm on a rotating bobbin, the arm including an arm supported via a detachable coupling means, a means for storing the nozzle unit, and a means for moving the nozzle unit In the winding machine, each nozzle unit is provided with a wire clamp urged by urging means to hold the wire, and a means for releasing the wire clamp against a spring in a state where the nozzle unit is coupled to the arm is provided by an arm. Is provided.

According to a second aspect of the present invention, there are provided a plurality of nozzle units for supplying a wire from a nozzle under a predetermined tension, a spindle for mounting and rotating a bobbin, and coupling means capable of separating the nozzle unit. An arm supporting the arm, a means for storing the nozzle unit, and a means for moving the nozzle unit, wherein the coil winding machine winds a wire supplied from the nozzle unit supported by the arm around a rotating bobbin, The coupling means has a fitting portion provided with a fitting shaft formed in the arm and the nozzle unit, a hole formed in the nozzle unit substantially at right angles to the fitting shaft, and projects into the hole by projecting from the arm. And a means for moving the pin between the protruding position and the retracted position.

According to a third aspect of the present invention, in the coil winding machine according to the first or second aspect, means for moving the arm is provided, and the arm for supporting and moving the nozzle unit is provided for moving the nozzle unit. Means.

According to a fourth aspect of the present invention, in the coil winding machine according to the first aspect, a chuck for gripping a wire supplied from a nozzle is provided.

According to a fifth aspect of the present invention, in the coil winding machine according to the fourth aspect, an arm different from the arm and a means for moving the arm are provided, and the chuck is supported by the arm. doing.

[0012]

According to the first aspect of the invention, since the release mechanism provided on the arm releases the wire clamp, there is no need to provide a release mechanism for each nozzle unit, and the configuration of the nozzle unit is simplified.

According to the second aspect of the present invention, the nozzle unit is connected to the arm at two places by the fitting portion having the fitting shaft and the pin projecting in a direction substantially perpendicular to the fitting shaft. Therefore, the mounting and release of the nozzle unit to and from the arm can be reliably performed by a simple operation. Further, since the pins are provided on the arm side, the configuration of the nozzle unit is simplified.

According to the third aspect of the present invention, the movement of the nozzle knit for replacing the nozzle unit can be performed by moving the arm without requiring an independent moving means.

According to the fourth aspect of the present invention, since the chuck grips the wire coming out of the nozzle unit, it is not necessary to tentatively bind the end of the wire necessary for cutting the wire.

According to the fifth aspect of the present invention, by supporting the chuck on another arm, the nozzle unit supported on one arm and the chuck supported on another arm can move independently. Work can be performed efficiently.

[0017]

1 to 7 show an embodiment of the present invention.

The winding machine shown in FIG. 1 is configured on a base 1 and includes two arms 6 and 7 and a spindle 4 for driving the bobbin 3 to rotate.

The spindle 4 is connected to a motor in a drive unit 5 provided on the base 1, and is rotated by the operation of the motor.
The arms 6 and 7 are arranged on both sides of the spindle 4.

The arm 6 arbitrarily moves in three axial directions according to the operation of the motors 8, 9 and 10, which are moving means. The arm 7 is arbitrarily moved in three axial directions by operation of a motor (not shown), which is a moving means having the same structure. Arm 7
A nozzle bar 11 for mounting the nozzle unit 12 is fixed to a tip of the nozzle with the tip facing in a right angle direction.

The nozzle unit 12 is a block-shaped member to which the nozzle 13 is fixed, as shown in FIG. A protrusion 14 is formed in the nozzle unit 12 in the horizontal direction, and a fitting hole 15 is formed in the nozzle bar 11 correspondingly. An annular groove 14A is formed at the tip of the projection 14, and a positioning detent 15A that engages with the annular groove 14A is supported in the fitting hole 15. The projection 14 and the fitting hole 15 form a fitting portion.

A hole 16 is formed in the nozzle unit 12 at a right angle to the projection 14.
The shot pin 17 that enters the hole 16 is accommodated in the hole. The shot pin 17 is displaced between a projecting position shown in FIG. 5 and a retracted position shown in FIG. 3 in response to driving of a shot pin driving cylinder 31 provided as a pin moving means provided on the nozzle bar 11. The above-mentioned protrusion 14, fitting hole 15, hole 1
6, shot pin 17 and shot pin drive cylinder 3
1 constitutes means for connecting the nozzle unit 12 and the arm 7.

The nozzle unit 12 is provided with a wire clamp 18 for holding a wire inserted through the nozzle 13.
The wire clamp 18 is fitted to the outer periphery of a shaft 19 provided in the nozzle unit 12 and is supported so as to be freely slidable in the axial direction, and is directed toward one wall surface 12A of the nozzle unit 12 by a spring 20 as an urging means. It is urged in the axial direction of the shaft 19 to clamp the wire between the shaft 19 and the wall surface 12A. In FIG. 2, the wire clamp 18 is drawn in the release position for convenience of explanation, but in this state where the wire clamp 18 is not actually connected to the nozzle bar 11, the wire clamp 18 is urged by the spring 20 and Abut.

The wire is supplied to the nozzle unit 12 from a wire reel (not shown) via a tensioner 21 shown in FIG. These wire reel and tensioner 2
1 is provided for each nozzle unit 12.

A rack 22 is provided on the drive unit 5 as storage means for the nozzle unit 12. As shown in FIG. 7, these racks 22 are provided with air chucks 23 that open and close in accordance with the supply of air, the number of which is equal to the number of nozzle units 12. The nozzle units 12 are located at predetermined storage positions of the rack 22. Are gripped from both sides by the air chuck 23. A claw that bends inward is provided at the tip of the air chuck 23, and a concave portion 32 that engages with the claw is formed on both side surfaces of the nozzle unit 12. The recess 32 is formed at a position where the nozzle unit 12 is mounted on the nozzle bar 11 and exposed to the outside so that the air chuck 23 can grip the nozzle unit 12 mounted on the nozzle bar 11.

In order to release the wire clamp 18, the nozzle bar 11 is provided with a release cylinder 24 to which a substantially L-shaped release member 25 is attached at the tip as shown in FIG. The release member 25 is bent toward the nozzle unit 12 having the distal end connected to the nozzle bar 11, and the distal end of the release member 25 separates the wire clamp 18 from the wall surface 12 </ b> A against the spring 20 in accordance with the contraction drive of the release cylinder 24. The wire held between the clamp 18 and the wall surface 12A is released. A cutter 33 for cutting a wire is attached to the nozzle bar 11. The release member 25 and the release cylinder 24 constitute release means of the wire clamp 18.

The arm 7 has a chuck 2 as shown in FIG.
6 are supported via a sub-arm 7A in the right angle direction. The chuck 26 opens and closes in response to the supply of air, and grips the end of the wire extending downward from the nozzle 13.

Reference numeral 27 denotes a delivery jig supported at the tip of the arm 6 via a rotary actuator 30. The delivery jig 27 transports the bobbin 3 between the spindle 4 and a transport jig (not shown) on a conveyor 29 laid on the base 1, and detaches and attaches the bobbin 3 to the spindle 4. Reference numeral 28 denotes a taping unit for winding a tape around the bobbin 3.

Next, the operation will be described.

In FIG. 1, the nozzle unit 12 is mounted on the nozzle bar 11, and the wire fed from the nozzle 13 is entangled with the bobbin 3 and the terminal. A case where the nozzle unit 12 is replaced with a nozzle unit 12B stored in the rack 22 will be described.

First, the release cylinder 24 on the nozzle bar 11
Is extended, and the wire is clamped between the wire clamp 18 urged by the spring 20 and the wall surface 12A. Then, the wire tied to the terminal of the bobbin 3 is cut by the cutter 33. As a result, the wire is held above the nozzle 3 by the wire clamp 1.
8, the end of the wire rod extending downward from the nozzle 3 is in an unrestricted free state. In this state, the arm 7 is moved, the nozzle unit 12 is moved to the empty air chuck 23 of the rack 22, and the nozzle unit 12 is gripped by the air chuck 23.

Then, as shown in FIG. 3, the shot pin drive cylinder 31 is contracted to pull out the shot pin 18 from the nozzle unit 12, and the arm 7 is moved away from the rack 22 so that the projection 14 15 and the nozzle unit 12 is
Disconnected from

Next, the arm 7 is moved and the nozzle bar 11 is moved.
Is moved to the front of the nozzle unit 12B, and the arm 7 is further moved so that the projection 14 of the nozzle unit 12B enters the fitting hole 15, so that the nozzle bar 11 approaches the nozzle unit 12B.

When the projection 14 enters the fitting hole 15 and the detent 15A fits in the annular groove 14A, the nozzle bar 11
The shot pin driving cylinder 31 is extended, so that the shot pin 17 enters the hole 16.

In this manner, the nozzle unit 12B is connected to the nozzle bar 11 at two places by the projection 14 and the shot pin 17 having the central axes perpendicular to each other, so that the nozzle unit 12B can be securely mounted to the nozzle bar 11 by a simple operation. it can.

Next, the air chuck 23 holding the nozzle unit 12B is released, and the arm 7 is moved to the winding position shown in FIG. At this time, since the wire clamp 18 on the nozzle unit 12B holds the wire, the wire is sent out from the tensioner 21 in accordance with the movement of the nozzle unit 12B.

After the nozzle unit 12B is moved to the winding position, the end of the wire rod coming out of the nozzle 13 is gripped by the chuck 26 by the movement of the arm 7. Then, the release cylinder 24 on the nozzle bar 11 is contracted and driven, and the wire clamp 18 is retracted via the release member 25 against the spring 20. The wire is now released from the wire clamp 18. In this state, the arm 7 is moved, and the bobbin 3 is moved.
The wire rod sent out from the nozzle 13 around the terminal is entangled with the terminal. Then, the wire from the chuck 26 to the terminal is cut by the cutter 33 near the terminal.

Thereafter, the bobbin 3 is wound, and after the winding is completed, the wire is wound around the terminals of the bobbin 3 again.
It is in the same state as.

In this way, the nozzle unit 12 or 12A is selectively mounted on the nozzle bar 11 and the bobbin 3
To the nozzle unit 12 (12A)
The mounting of the nozzle bar 11 and the operation of the wire clamp 18 are all performed by the cylinders 24 and 31 provided on the nozzle bar 11.
No actuator is required for the nozzle unit 12 (12A). For this reason, even if the number of nozzle units increases, the increase in the manufacturing cost of the winding machine is small. Further, since the nozzle unit 12 is replaced by the movement of the arm 7, there is no need to provide a special moving means for replacing the nozzle unit 12.

[0040]

As described above, according to the first aspect of the present invention, since the spring-type wire clamp provided in each nozzle unit is configured to be released by the release means provided in the arm, each of the individual nozzles is provided. There is no need to provide a release means in the unit, and the configuration of the nozzle unit is simplified.

According to the second aspect of the present invention, a fitting portion formed in the arm and the nozzle unit, a hole formed in the nozzle unit substantially perpendicular to the fitting shaft, Since the nozzle unit is provided with a pin that protrudes into the hole, the nozzle unit is locked to the arm at two places, and the connection and release of the nozzle unit and the arm can be reliably performed by a simple operation. Further, since the pins are provided on the arm side, there is no need to provide a driving means for the pins in the nozzle unit, and the configuration of the nozzle unit is simplified.

According to the third aspect of the present invention, since the moving means of the nozzle unit is an arm which supports and moves the nozzle unit, there is no need to provide an independent moving means for replacing the nozzle unit. The structure of the winding machine is simplified.

According to the fourth aspect of the present invention, provision of the chuck eliminates the need for temporary binding of the wire.

According to the fifth aspect of the present invention, since the chuck is supported by another arm, the nozzle unit and the chuck can be moved independently, and the work can be performed efficiently. Therefore, according to the present invention, a winding machine having a nozzle replacement function can be simply and inexpensively configured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a coil winding machine showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a nozzle bar and a nozzle unit.

FIG. 3 is a view taken in the direction of arrows AA in FIG. 2;

FIG. 4 is a perspective view in a state where a nozzle bar and a nozzle unit are combined.

5 is a view taken in the direction of arrows BB in FIG. 4;

FIG. 6 is a perspective view of a chuck and an arm supporting the chuck.

FIG. 7 is a perspective view of a rack.

[Explanation of symbols]

 3 Bobbin 4 Spindle 6, 7 Arm 12 Nozzle Unit 14 Projection 15 Fitting Hole 16 Hole 17 Shot Pin 18 Wire Clamp 20 Spring 22 Rack 24 Release Cylinder 25 Release Member 26 Chuck 31 Shot Pin Drive Cylinder

Claims (5)

(57) [Claims] 1. A plurality of nozzle units for supplying a wire from a nozzle under a predetermined tension, a spindle for mounting and rotating a bobbin, an arm for supporting the nozzle unit via a detachable coupling means, A biasing means for holding a wire in a coil winding machine including a means for storing a nozzle unit and a means for moving the nozzle unit, and winding a wire supplied from the nozzle unit supported by an arm around a rotating bobbin. A coil winding machine characterized in that a wire clamp biased to the arm is provided in each nozzle unit, and means for releasing the wire clamp against a spring in a state where the nozzle unit is connected to the arm is provided in the arm. 2. A plurality of nozzle units for supplying a wire from a nozzle under a predetermined tension, a spindle for mounting and rotating a bobbin, an arm for supporting the nozzle unit via a detachable coupling means, A coil winding machine for winding a wire supplied from a nozzle unit supported by an arm around a rotating bobbin, comprising a means for storing a nozzle unit and a means for moving the nozzle unit; And a hole formed in the nozzle unit at substantially right angles to the fitting shaft, a pin protruding from the arm and entering the hole, and a pin protruding position. And a means for moving between a retracted position and a retracted position. 3. The coil winding machine according to claim 1, further comprising means for moving an arm, wherein the arm supporting and moving the nozzle unit constitutes the moving means of the nozzle unit. 4. The coil winding machine according to claim 1, further comprising a chuck for gripping the wire supplied from the nozzle. 5. The coil winding machine according to claim 4, further comprising an arm different from the arm and a moving means for the arm, wherein the chuck is supported by the arm.