JP2000277364A - Air-core coil forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items of an air-core coil, downsize the air-core coil, and improve its quality in an air-core coil forming apparatus for forming the air-core coil by spirally winding a wire. SOLUTION: An air-core coil forming apparatus comprises a sheath separating section 20 for partially separating the sheath of a sheathed wire 1, a wire supply section 30 for feeding the wire 1 by a predetermined length, a coil forming section 40 for forming an air-core coil by winding the wire 1 around a motor- rotated shaft 41, and a lead cutting section 50 for cutting the wire 1 to lengths which are required for air-core coil forming. In this case, the section 30 is constructed to be vertically movable with respect to the shaft 41 of the section 40, and a shared motor 60 provided on the section 40 is used both as a drive source for the shaft 41 and a drive source for making the section 30 move vertically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-core coil forming apparatus, and more particularly to an air-core coil forming apparatus for forming a core coil by spirally winding a wire.

[0002]

2. Description of the Related Art FIG. 11 shows a side surface of a whole coil of a room core coil in which a large number of air core coils are automatically formed from one continuous insulated wire. In the figure, 1 is a continuous coated wire as a wire, 2 is a coating stripping section for partially stripping the coating (eg, polyurethane) of the coated wire 1, 3 is a lead feeding section for feeding the coated wire 1 to a required length, Reference numeral 4 denotes a coil forming section that winds the covering wire 1 to form a room core coil, and reference numeral 5 denotes a lead cut section that cuts the covering wire 1 to a length required for forming an air core coil.

[0003] Fig. 12 (A) shows that the sheath 11 at the tip end of the sheathed wire 1 is peeled off by the sheath peeling part 2 and the core wire 12A.
Is exposed from the coating 11. The core wire 12B at the rear end is a portion exposed by stripping the coating 11 after the entire coating wire 1 is fed by a required length by the lead feeder 3. Core wire 12A, 1
The end of 2B is cut by the lead cut portion 5. FIG. 12B shows the completed air core coil 6 wound by the coil forming section 4.

By the way, in order to form the air-core coil 6 as shown in FIG. 12 (B), when the covering wire 1 is wound, the lead feeding portion 3 and the coil forming portion 4 are relatively illustrated. It is necessary to move in the directions of the middle arrows Z1 and Z2. Conventionally, the lead feeding section 3 is fixed, and the coil forming section 4
Was configured to move. Specifically, a motor 6A (having a shaft 4A around which the coated wire 1 is wound at the tip of the rotating shaft) constituting the coil forming section 4 is supported by a ball screw 8, and the lower end of the ball screw 8 A motor 6B for rotating the ball screw 8 is provided separately from the motor 6A. Then, when the motor 6B rotates forward or backward, the motor 6A moves in the direction indicated by the arrow Z.
1 and Z2 direction, and the motor 6A is connected to the shaft 4A.
Is rotated to form the air-core coil 6 as shown in FIG. 12 (B).

[0005]

However, in the air core coil forming apparatus having the above-mentioned conventional configuration, in addition to the motor 6A for rotating the shaft 4A, a separate motor 6B and a ball screw 8 for vertically moving the motor 6A are provided. This is necessary, and the number of components of the air-core coil forming apparatus increases.
For this reason, there has been a problem that the air core coil forming apparatus becomes large and the product cost increases.

In addition, the motor 6B must use a motor having a large output in order to move the relatively heavy motor 6A up and down, resulting in a problem that power consumption is increased and running cost is increased. Further, as described above, the motor 6B needs to move the relatively heavy motor 6A up and down, but it is difficult to accurately move the heavy motor 6A up and down. There was also a problem that product variation might occur in No. 6.

The present invention has been made in view of the above points, and an object of the present invention is to provide an air-core coil forming apparatus capable of reducing the number of parts and reducing the size and improving the quality of manufactured air-core coils. Aim.

[0008]

Means for Solving the Problems In order to solve the above problems, the present invention is characterized by taking the following means. The invention according to claim 1 is a coating stripping section for partially stripping the coating of a continuous coating wire as a wire, a lead feeding section for feeding the coating wire by a required length, and a shaft for rotating the coating wire by a motor. An air-core coil forming apparatus comprising: a coil forming section that forms an air-core coil by being wound into a coil; and a lead cut section that cuts the covered wire into a length required for air-core coil formation. It is configured to be able to move up and down with respect to the shaft of the coil forming unit, and to provide a feed unit driving mechanism that drives the lead sending unit up and down by using a motor provided in the coil forming unit as a drive source. It is assumed that.

According to a second aspect of the present invention, in the air core coil forming apparatus according to the first aspect, the feed unit driving mechanism is configured to branch the rotation of the motor and drive the lead feed unit. A gear mechanism for rotating a shaft and an eccentric cam connected to the feed unit drive shaft for vertically driving the lead feed unit with respect to the shaft are provided.

Each of the above-mentioned means operates as follows.
According to the first aspect of the present invention, the lead feeding section is configured to be vertically movable with respect to the shaft of the coil forming section, and the lead feeding section is driven up and down by using a motor provided in the coil forming section as a driving source. By providing the feed unit driving mechanism, it is possible to drive the shaft for winding the covered wire by one motor and to drive the lead feed unit up and down. Therefore, the number of parts can be reduced,
The configuration of the air core coil forming apparatus can be simplified, downsized, and reduced in cost.

According to the second aspect of the present invention, a gear mechanism for rotating a feed unit drive shaft for driving a lead feed unit by branching the rotation of a motor, and a lead connected to the feed unit drive shaft. Since the feed unit drive mechanism is configured by the eccentric cam that drives the feed unit up and down with respect to the shaft, the lead feed unit can be driven using the gear mechanism and the cam, which have a simple configuration. In addition, by appropriately setting the gear ratio of the gear mechanism and the shape of the cam, the drive control of the lead feeder can be easily performed, and the air core coil can be formed with high precision.

[0012]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram of an air core coil forming apparatus according to one embodiment of the present invention. As shown in FIG.
The coating stripping section 20, the lead feeding section 30, the coil forming section 40, the lead cutting section 50, and the like are disposed on the top, and the same covering wire as described with reference to FIG. A predetermined portion of the coating 11 (e.g., polyurethane) is peeled off and the air-core coil 6 shown in FIG.

The coating stripping section 20 is provided for covering the coating 1 of the coating wire 1.
1 has a function of partially exfoliating, the lead feeding section 30 has a function of feeding the covering wire 1 by a required length, the coil forming section 40 has a function of winding the covering wire 1 to form a room core coil, and The lead cut portion 50 has a function of cutting the covered wire 1 to a length necessary for forming the air-core coil.

Hereinafter, among the above-described configurations, the detailed configuration will be described focusing on the configuration of the coating stripping section 20 and the coil forming section 40, which are the main components of the air core coil forming apparatus. FIG. 2 and FIG. 3 are side views showing different operating states of the dressing peeling device 20. In each of the figures, reference numeral 21 denotes a cutting head having a blade 21A for peeling off the coating of the coating wire 1 passing through the center by centrifugal force during rotation. An electric motor 22 rotates the cutting head 21 to generate centrifugal force.

In this embodiment, the rotating shaft 2 of the motor 22
2A is directly connected to the cutting head 21. For this reason, the rotating shaft 22A is formed in a hollow cylindrical shape so that the coated wire 1 can be penetrated and supplied to the cutting head 21. Reference numeral 71 denotes a first electric solenoid that integrally moves the motor 22 and the cutting head 21 in the axial direction and feeds the covered wire 1 by a length necessary for peeling. The first electric solenoid 71 fixes the main body 71A to the fixing plate 24, and fixes the end of a shaft 71B that slides in the axial direction in the main body 71A to the flange 22 of the motor 22.
B. The fixing plate 24 has a through hole 24A that allows the motor 22 to move in the axial direction.

As shown in the side view of FIG. 4A, the cutting head 21 has a hollow shaft 21B at the center and the intermediate portion of the blade 21A at a position away from the body in the axial direction. An annular portion 21C for pivotal support and an annular portion 21D for raising and lowering the rear end of the blade 21A are fixed. As shown in the right end view of FIG. 4C, three blades 21A for coating stripping are arranged at a distance of 120 ° in the rotation direction. The annular portion 21D is formed with an arc-shaped groove 21F for guiding the rear end projections 21E of the three blades 21A, as shown in the left end view of FIG. 4B.

According to the cutting head 21 having the above structure, when the annular portion 21D rotates, a centrifugal force is generated, and the protrusion 21E is guided by the groove 21F and moves outward in the radial direction of the annular portion 21D. Therefore, the tip of the blade 21A approaches the coated wire 1 and peels off the coating 11 of the coated wire 1. The rotation shaft 22A of the motor 22 is fixed to the shaft 21B of the cutting head 21 by screws or the like, and therefore, the motor 22 and the head 21 are directly connected. Therefore, when the motor 22 is rotated, the cutting head 21 is rotated.
Rotate, and the centrifugal force generated at this time causes the blade 21A to peel off the coating 11 of the coating wire 1.

In the configuration of the present embodiment, the direct connection between the motor 22 and the cutting head 21 does not hinder the continuous supply of the coated wire 1 because the rotating shaft 22A of the motor 22
Is a hollow structure, and the coated wire 1 is supplied to the cutting head 21 through the rotation shaft 22A. The feed of the covering wire 1 is controlled by the lead feed unit 30. The lead feeder 30 is driven by using the second electric solenoid 72 as a drive source.

On the other hand, the first electric solenoid 71 determines the peeling length of the coating of the coating wire 1 by the stroke of the shaft 71B. The state of the cutting head 21 in FIG. 2 is a state in which the shaft 71 </ b> B of the first electric solenoid 71 is in a protruding state, and thus is in the forward position together with the motor 22. On the other hand, the state of the cutting head 21 in FIG. 2 is in the retracted position together with the motor 22 because the shaft 71B of the first electric solenoid 71 is retracted. During this time, the motor 22 continues to rotate, and the covering 11 of the covering wire 1 is equivalent to the stroke of the first electric solenoid 71.
Is exfoliated by the blade 21A.

As a result, as shown in FIG. 12 (A), the coating 11 at the distal end is peeled off to expose the core wire 12A. As described above, the core wire 12B at the rear end shown in FIG.
Is stripped by stripping after the entire coated wire 1 has been fed by the required length by the lead feeder 30. By the way, as is clear from the above description, the coating 11 is peeled off at the coating peeling section 20, and this coating 1 is removed.
1 is generated as waste. Therefore, in order to efficiently collect the peeled coating 11, a coating recovery box 25 as shown in FIG.

As shown in FIG. 1, the coating collection box 25 is provided so as to surround the cutting head 21. The coating collection box 25 has a wire lead-out hole 25A for guiding the coated wire 1 that has passed through the cutting head 21, an air introduction unit 26 for introducing pressurized air A into the box 25, A collection pack 27 for collecting the coating waste by the pressurized air A is provided. The collection pack 27 is detachably attached to the coating collection box 25.

The air introduction section 26 is connected to a connection pipe 26.
A is connected to the electric blower fan 28 via A. The electric blower fan 28 is configured to generate pressurized air A by rotating the fan with an electric motor (not shown). By providing the coating collection box 25 in this manner, the coating waste separated from the coating wire 1 by the cutting head 21 does not separate from the sealed coating collection box 25. Moreover, pressurized air A is introduced into the coating collection box 25,
As a result, the coating waste is collected in the collection pack 27, and can be easily removed by exchanging the entire collection pack 27. For this reason, it is possible to prevent the surroundings of the coating stripping device 20 from being stained with coating dust.

Next, the coil forming section 40 will be described. The coil forming section 40 includes a shaft 41, a shaft holder 42, a stopper holder 44, and a common motor 6.
0, a gear box 80, a cam mechanism 90, and the like. 6 to 8 are cross-sectional views showing the vicinity of the shaft 41 of the air core coil forming section 40 in an enlarged manner. In each of the drawings, reference numeral 41 denotes a shaft having a stepped portion 41A around which the sheathed wire 1 is wound, a shaft holder 42 supporting the rear end side of the shaft 41 at the center of rotation, and 43 a stepped portion 41A of the shaft 41. A coil stopper 44 for pressing the distal end of the covering wire 1 against the coil holder 44 is a stopper holder that supports the coil stopper 43 and is movable in the radial direction of the shaft 41.

The shaft 41 is connected to a gear box 80 described later.
And is connected to the rotating shaft 61 of the common motor 60 via the common motor 60, so that the common motor 60 is directly rotated. Reference numeral 45 denotes a compression coil spring that applies an elastic force to the coil stopper 43 via the stopper holder 44 in a direction approaching the shaft 41, and reference numeral 46 denotes a resistance against the elasticity of the spring 45 against the coil stopper 43 via the stopper holder 44. And a fourth electric cylinder that applies a force in a direction away from the shaft 41.

The stopper holder 44 has an elongated hole 44A so as not to hinder the movement of the shaft 41 in the radial direction. The spring 45 is housed in the elongated hole 44A, and is interposed between the wall surface of the elongated hole 44A and the convex portion 42A protruding from the shaft holder 42. In the center of the bottom surface of the shaft holder 42, a circular hole 42B for mounting the rotating shaft 61 of the common motor 60 (see FIGS. 1 and 9) is formed.

In the above configuration, the shaft 41 is connected to the rotating shaft 61 of the common motor 60 via a gear box 80 described later, and is configured to be directly rotated by the common motor 60. Next, the operation of the coil forming section 40 will be described. FIG.
7 is a state diagram of workpiece loading / chuck opening in which the electric cylinder 46 is turned on, its shaft 46A is protruded, and the stopper holder 44 is moved to the left inside the enclosure against the elasticity of the spring 45.

When the stopper holder 44 slides to the left, the coil stopper 43 moves away from the shaft 41,
Step 41A of small diameter of shaft 41 and coil stopper 43
A gap is formed between the two and allows the end of the wire 1 to be easily attached. However, there is no gap between the coil stopper 43 and the large-diameter main body side of the shaft 41, which is larger than the diameter of the covered wire 1. Therefore, the end of the covered wire 1 is securely held at the step, and the axial direction (The vertical direction in the figure) does not occur.

FIG. 7 is a diagram showing a state in which the fourth electric cylinder 46 is turned off in the state shown in FIG. 6, and the shaft 46A is pulled down to fix the work / close the chuck. In this state,
The stopper holder 44 slides rightward in the figure due to the elasticity of the spring 45. For this reason, the coil stopper 43
Approaches the step 41A of the shaft 41, and presses and holds the end of the coated wire 1 between the step 41A and the coil stopper 43.

FIG. 8 shows the state of the shaft holder 42 in the state of FIG.
Is a state diagram in which the air-core coil 6 is rotated counterclockwise to form a required number of turns spirally around a shaft 41A. This coil 6 is connected to a fourth electric cylinder 46
Is turned on again and the coil stopper 43 is retracted (the chuck is opened), whereby the shaft 41 can be detached from the step portion 41A. In the air-core coil forming apparatus according to the present embodiment, as shown in FIG.
Since 1A is set downward, if the chuck is opened, the coil 6 falls naturally by its own weight.

By the way, in order to wind the coil 6 around the shaft 41 as shown in FIG. 8, the lead feed portion 30 and the coil forming portion 40 are vertically moved (directions indicated by arrows Z1 and Z2 in FIG. 1). Need to be moved to In this embodiment,
Fix the coil forming section 40 and move the lead feed section 30
1 and Z2. Lead feed unit 3
Reference numeral 0 denotes a structure which is supported on the columns 33 and 34 erected on the base 100 so as to be vertically movable, and is always urged in the direction of arrow Z1 by the coil springs 31 and 32 inserted through the columns 33 and 34. It has been. A follower 92 is provided at the upper end of the lead feeder 30.
2 is configured to move in the direction of the arrow Z2 against the elastic force of the coil springs 31 and 32 by pressing the second spring. A cam plate 91 of a cam mechanism 90 described below is engaged with an upper portion of the follower 92. Therefore, the follower 92 is
1 and the arrow Z1 of the lead feeder 30
Movement in the direction is restricted.

Next, a description will be given of the gear box 80 and the cam mechanism 90 which function as a feeder driving mechanism for driving the above-described lead feeder 30. FIG. 9 is a diagram showing the internal structure of the gear box 80. As shown in the figure,
The gear box 80 includes a case 81, a cover 82, a worm 83, a worm wheel 84, a drive shaft 85, and the like. Inside the case 81 is a worm 8
3 and a worm wheel 84 are rotatably and orthogonally mounted. The worm 83 and the worm wheel 84 are combined so as to mesh with each other.

After the cover 82 is screwed to the case 81, the common motor 60 is screwed and fixed to the cover 82. At this time, the rotating shaft 61 of the common motor 60 is
It is configured to be inserted into the gear box 80 through an insertion hole 82A formed in the cover 82 and to be connected to a connection hole 83A formed in the worm 83. Therefore, the worm 83 is directly rotated by the rotation of the common motor 60.

The shaft 41 is joined to the lower part of the worm 83. Therefore, the shaft 41
Is connected to the rotating shaft 61 of the common motor 60 via the worm 83, and the shaft 41 is directly driven to rotate by the common motor 60 as described above. On the other hand, a drive shaft 85 is integrally joined to the worm wheel 84, and the drive shaft 85 is connected to a cam mechanism 90 described later.
Connected. As described above, the worm 83 meshed with the worm wheel 84 is driven by the common motor 60. For this reason, the common motor 6
0 is diverted to the drive shaft 85, and the drive shaft 8
The rotation of 5 serves as a drive source for driving the cam mechanism 90.

Next, the cam mechanism 90 will be described.
The cam mechanism 90 includes a cam plate 91 joined to the drive shaft 85.
And a follower 92 provided in the aforementioned lead feeder 30
It is composed of As shown in FIG. 10, the cam plate 91 is, for example, a circular cam, but the connection position with the drive shaft 85 is shifted from the center position of the cam plate 91 (that is, an eccentric cam structure). .

Therefore, when the drive shaft 85 rotates in the direction of arrow B from the state shown in FIG. 10A and comes to the state shown in FIG. 10B, the follower 92 is pressed by the cam plate 91.
Moves by the amount indicated by the arrow L in FIG. Since the follower 92 is provided in the lead feeder 30, the follower 9
2 is pressed and urged by the cam plate 91, the lead feed portion 30 moves in the direction indicated by the arrow Z against the elastic force of the coil springs 31 and 32.
Move (down) in two directions. Further, the rotation of the cam plate 91 further causes the lead feeder 30 to rotate the coil spring 3.
It moves (moves upward) in the direction of arrow Z1 by the elastic force of 1,32.

According to the above configuration, the lead feeding section 30 moves up and down with a constant stroke L with respect to the shaft 41 of the coil forming section 40, so that the coil 6 shown in FIG. it can. At this time, in the present embodiment, the lead feed unit 30 is connected to the shaft 4 of the coil forming unit 40.
1, and the lead feed unit 30 is driven up and down via a gear box 80 and a cam mechanism 90 using a common motor 60 provided in the coil forming unit 40 as a drive source. . The common motor 60 also functions as a drive source for the shaft 41.

In this embodiment, a gear mechanism including a worm 83 and a worm wheel 84 is used to branch the rotation of the common motor 60 in two directions. And a follower 92, a cam mechanism 90 is used. This gear mechanism and cam mechanism 90
Has a simple configuration and can ensure reliable operation. Therefore, the rotation drive of the shaft 41 and the vertical drive of the lead feeder 30 can be accurately driven by one common motor 60, and the number of components can be reduced. Simplification, downsizing, and cost reduction can be achieved.

In the structure of this embodiment, the drive control of the lead feeder 30 can be easily performed by appropriately setting the gear ratio of the gear box 80, the shape of the cam plate 91 of the cam mechanism 90, and the like. It is possible to form the air core coil 6 with high accuracy. Also,
Here, paying attention to the driving devices that respectively drive the coating stripping section 20, the lead feeding section 30, the coil forming section 40, and the lead cutting section 50 that constitute the above-mentioned air-core coil forming apparatus, the present embodiment will be described. Elements 20, 30, 40,
All 50 are configured to be driven by electricity.

Specifically, the coating stripping section 20 is
And is driven by a first electric solenoid 71. Also,
Even when the coating collection box 25 shown in FIG. 5 is used, the electric blower fan 28 is used to generate the pressurized air A. In addition, the second electric solenoid 72 is used to feed the coating wire 1 in the lead feeding section 30. In the coil forming section 40, a stepping motor is used as the shared motor 60, and the fourth electric cylinder 46 is used to move the stopper holder 44. Further, in the lead cut section 50, the third electric solenoid 73 is used as a drive source.

As described above, since the components 20, 30, 40, and 50 constituting the air core coil forming apparatus are all driven by electricity, it is necessary to use air as a driving source as in the related art. This eliminates the need for equipment such as a compressor, thereby reducing equipment costs. Also, unlike a compressed air supply facility such as a compressor, since there are many power supply installation positions in a factory where the air core coil forming device is installed, the air core coil forming device can be easily moved.

[0041]

According to the present invention as described above, the following various effects can be realized. According to the first aspect of the present invention, it is possible to perform the rotation driving of the shaft for winding the coated wire and the vertical driving of the lead feeder by one motor, thereby reducing the number of parts.
The configuration of the air core coil forming apparatus can be simplified, downsized, and reduced in cost.

According to the second aspect of the present invention, the lead feeder can be driven using a gear mechanism and a cam having a simple structure, and the gear ratio of the gear mechanism and the shape of the cam are appropriately set. By doing so, it is possible to easily control the drive of the lead feeder, and it is possible to accurately form the air-core coil.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an air core coil forming apparatus according to an embodiment of the present invention.

FIG. 2 is a view for explaining the configuration and operation of a coating stripping section (part 1).

FIG. 3 is a view for explaining the configuration and operation of a coating stripping section (part 2).

FIG. 4 is a view for explaining the configuration and operation of a coating stripping section (part 3).

FIG. 5 is a diagram for explaining a coating collection box.

FIG. 6 is a view for explaining the configuration and operation of a coil forming unit (part 1).

FIG. 7 is a view for explaining the configuration and operation of a coil forming unit (part 2).

FIG. 8 is a view for explaining the configuration and operation of a coil forming section (part 3).

FIG. 9 is a diagram for explaining a configuration of a gear box.

FIG. 10 is a view for explaining a cam mechanism.

FIG. 11 is an overall configuration diagram showing an example of a conventional air core coil forming apparatus.

FIG. 12 is a configuration diagram of an air-core coil.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated wire 20 Insulated stripping part 21 Cutting head 22 Motor 24 Fixing plate 25 Insulated collection box 26 Air introduction part 27 Collection pack 28 Electric blower fan 30 Lead sending part 40 Coil forming part 41 Shaft 42 Shaft holder 43 Coil stopper 44 Stopper holder 45 Compression coil spring 46 Cylinder 50 Lead cut section 60 Shared motor 61 Rotary shaft 71 First electric solenoid 72 Second electric solenoid 73 Third electric solenoid 80 Gear box 83 Worm 84 Worm wheel 85 Drive shaft 90 Cam mechanism 91 Cam plate 92 Follower

Claims (2)

[Claims] 1. A coating stripping section for partially stripping a coating of a continuous coating wire as a wire, a lead feeding section for feeding the coating wire by a required length, and winding the coating wire around a shaft rotated by a motor. An air-core coil forming apparatus comprising: a coil forming unit that forms an air-core coil by using a lead cutting unit that cuts the covered wire into a length necessary for forming the air-core coil; And a feed unit driving mechanism that drives the lead feed unit up and down by using a motor provided in the coil forming unit as a drive source and a vertically movable unit with respect to the shaft of the unit. Core coil forming equipment. 2. The air core coil forming apparatus according to claim 1, wherein the feed unit driving mechanism includes a gear mechanism that branches a rotation of the motor and rotates a feed unit drive shaft that drives the lead feed unit. An air-core coil forming apparatus, comprising: an eccentric cam connected to the feed unit drive shaft and driving the lead feed unit to move up and down with respect to a shaft.