JPH0590016A - Automatic resistance-wire winding method using automatic resistance-wire winding machine - Google Patents

Abstract

PURPOSE:To automate the winding operation of a resistance wire on a body and to eliminate a problem that a welded part is stripped off due to the rigidity of the resistance wire even when a low-resistance wire-wound resistor is manufactured. CONSTITUTION:An automatic resistance-wire winding machine which is provided with the following, is used: a body holding part 2; a motor 3 for body rotation use as a body rotation means; a resistance-wire feed part 4 which feeds a resistance wire 13 to a body 10; a spiral winding means 5 which winds the resistance wire on the body 10; and a welding means 6 which welds the resistance wire 13 to terminal caps 11a, 11b. A spiral winding process is performed several times by sandwiching a reset process which adjusts the welding position of the resistance wire. From the viewpoint of a circuit, the resistance wire is connected in parallel between the terminal caps 11a, 11b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to winding of a resistance wire when manufacturing a winding resistor, and more particularly to a winding method using an automatic resistance wire winding machine for automatically winding. It is a thing.

[0002]

2. Description of the Related Art Generally, many so-called wound resistors are used in various electronic devices and electronic circuits built in VTRs. FIG. 9 is a schematic perspective view of a wound resistor. As shown in FIG. 9, such a wound resistor 1
Is a small-sized ceramic body 1 formed in a cylindrical shape.
0 and terminal caps 1 attached to both ends of the element body 10
1a, 11b, lead wires 12a, 12b projecting from the terminal caps 11a, 11b to the side ends of the terminal caps 11a, 11b along the axis of rotation of the element body, and both ends welded to the terminal caps 12a, 12b. In this state, the resistance wire 13 is spirally wound on the peripheral surface of the element body 10.

Conventionally, when the resistance wire 13 is wound around such a winding resistor 1, the element body 10 forming the winding resistor 1 is fixed to a device having an appropriate chuck mechanism. While rotating the chuck mechanism to which the body 10 is fixed, the resistance wire 13 is wound around and fixed to the peripheral surface of the body 10 by manpower while moving the body 10 along the length direction. ..

[0004]

By the way, in the case of winding the resistance wire around the element body in this way, the tip of the resistance wire is welded to one of the terminal caps mounted on both ends of the element body. Start winding and then cut the rear end of the resistance wire while welding it to the other terminal cap, so the work of winding and fixing the resistance wire around the element body is extremely complicated, and the manufacturing efficiency of the winding resistor is extremely high. It was very low.

On the other hand, when the resistance values of the finished winding resistors are made different, the material of the resistance wire, the wire diameter, the winding length, etc. are changed. When manufacturing a resistor with a lower resistance value, either use a material with a low resistivity, shorten the winding length of the resistance wire, or use a resistance wire with a larger diameter. It is. However,
It is troublesome to prepare various resistance wires with different materials and diameters, and especially when a resistance wire with a large diameter or a resistance wire with a large rigidity must be used, the welded part to the terminal cap will have a rigidity of the resistance wire. There was also a problem that it could not withstand and peeled off. In addition, changing the winding length of the resistance wire has a drawback that variations are likely to occur in the conventional winding method by hand.

Therefore, the technical problem of the invention of the present application is, in the case of manufacturing a winding resistor, to automate the work of winding the resistance wire around the element body and to manufacture a winding resistor of low resistance. Another object of the present invention is to provide a winding method that does not cause the problem of peeling of the welded portion due to the rigidity of the resistance wire.

[0007]

In order to solve such a technical problem, the resistance wire automatic winding method according to claim 1 of the present application is a columnar structure having a pair of terminal caps attached to both ends thereof. Body holding part for holding the body made of the insulating material, a body rotating means for rotating the body around the center line of the body, and a resistance wire for winding the resistance wire around the rotating body. For supplying a resistance wire to the element body, and for moving one of the element body or the resistance wire supply portion in the length direction of the element body to form a spiral winding of the resistance wire around the element body. Automatic resistance wire winding comprising spiral winding means and welding means for welding the front end of the resistance wire supplied by the resistance wire supply unit and the rear end of the wound resistance wire to each of the pair of terminal caps. Automatic resistance wire winding that automatically winds a resistance wire around the body using a mounting machine A first operation of welding the tip of the resistance wire to one of the terminal caps by the welding means, and, after the first operation, rotating the element body by the element body rotating means and by the spiral winding means. A second operation of spirally winding the resistance wire around the peripheral surface of the element body by relatively linearly moving the element body or the resistance wire supply unit, and positioning the resistance wire on the other terminal cap after the second operation. And the welding by the above-mentioned welding means and a third spiral winding step consisting of a third operation of separating the residual resistance wire from this welding point, and after the first spiral winding step, the tip of the residual resistance wire or the element body is removed. By moving in the length direction of the element body, the tip of the remaining resistance wire is positioned on the peripheral surface of the one terminal cap at a predetermined position different from the welding position in the first spiral winding step. Reset process After the reset procedure, it is intended to include a second helical winding step of repeating the steps until the first operation and the third operation again.

In order to achieve the same object, in the method for automatically winding a resistance wire according to claim 2 of the present application, the element body made of a cylindrical insulator having a pair of terminal caps attached to both ends is held. An element body holder, an element body rotating means for rotating the element body around the center line of the element body, and a resistance wire supply for supplying the resistance wire to the element body so that the resistance wire is wound around the rotating element body. And a spiral winding means for relatively moving one of the element body and the resistance wire supply portion in the length direction of the element body to spirally wind the resistance wire around the element body, and the resistance. Using a resistance wire automatic winding machine equipped with welding means for welding the front end of the resistance wire supplied by the wire supply unit and the rear end of the wound resistance wire to each of the pair of terminal caps, A resistance wire automatic winding method for automatically winding a resistance wire around an element body, comprising: First operation of welding the tip of the resistance wire to one of the terminal caps by means of the means, and after this first operation, the element body is rotated by the element body rotation means and the element body or the resistance wire supply part is rotated by the spiral winding means. A second operation in which the resistance wire is spirally wound around the peripheral surface of the element body by linear movement, and after this second operation, the resistance wire is positioned on the other terminal cap and welded by welding means, and the remaining resistance A first spiral winding step consisting of a third action of pulling the wire away from this weld, and after this first spiral winding step,
A reset step of positioning the tip of the remaining resistance wire at a predetermined position on the peripheral surface of the other terminal cap that is different from the welding location in the third operation, and after the reset step, the welding means is used. A fourth operation of welding the tip of the resistance wire to the above-mentioned position, and after this fourth operation, the element body is rotated by the element body rotation means and the element body or the resistance wire supply unit is operated by the spiral winding means as the second operation. A fifth operation of linearly moving the resistance wire around the peripheral surface of the element body in a direction opposite to that of the first operation, and, after the fifth operation, on the peripheral surface of the one terminal cap, A second spiral winding step comprising a sixth operation of positioning the tip of the resistance wire at a predetermined position different from the welding position in the operation and performing welding by the welding means.

[0009]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. First, an automatic resistance wire winding machine used for carrying out the resistance wire automatic winding method of the present embodiment will be described. FIG. 1 is a schematic perspective view of an automatic resistance wire winding machine used for carrying out the resistance wire automatic winding method of the present embodiment.

The resistance wire automatic winding machine schematically shown in FIG. 1 mainly rotates the element body holding portion 2 for holding the element body 10 and the element body 10 about the center line of the element body 10. Element body rotating means 3, a resistance wire supply unit 4 that supplies the resistance wire 13 to the element body 10 so that the resistance wire 13 is wound around the rotating element body 10, the element body 10 or the resistance wire supply unit 4 One of them is moved in the direction of the center line of the element body, and the resistance line 1 to the element body 10
A spiral winding means 5 for spiraling the winding of 3;
Welding means 6 for welding the front end of the resistance wire 13 supplied by the resistance wire supply unit 4 and the rear end of the wound resistance wire 13 to each of the pair of terminal caps at both ends of the element body 10.
It consists of and.

First, the structure of a main frame for supporting the automatic resistance wire winding machine as a whole will be described with reference to FIG.
This automatic resistance wire winding machine is placed on a frame (not shown). The entire machine is provided with a main frame bottom plate 91 placed horizontally on the frame, and two main frame side plates 9 that are vertically fixed to both ends of the main frame bottom plate 91.
It is supported by a main frame composed of 2, 92.

The two facing main frame side plates 92,
On the inner side of 92, two moving frame guide rods 51 are vertically installed. The element body 10 wound by this resistance wire automatic winding machine is almost the same as the conventional one shown in FIG. That is, as shown in FIG. 9, the element body 10 is a columnar body formed of an insulating material such as ceramics, and a pair of terminal caps 11a and 11b are capped at both ends thereof.

The pair of terminal caps 11a and 11b are cylindrical caps made of a conductive material such as aluminum. Each terminal cap has a lead wire 12
a and 12b are fixed by welding or the like, and the lead wires 12a and 12b extend from the terminal caps 11a and 11b to the outside in the length direction of the element body. The cylindrical element body 10 is arranged in a posture in which the length direction thereof is oriented in the horizontal direction. Then, the resistance wire 13 is wound while rotating around the center line of the element body by the element body rotating means 3 described later. Needless to say, the direction of the center line of the element body 10 is equal to the length direction of the element body 10, and in the following description,
The direction of the center line of the element body 10, which is the rotation axis, is called the element body rotation axis direction.

Further, the element body 10 is transported in the horizontal direction perpendicular to the direction of the axis of rotation of the element body while being supported by an element body supply arm described later, and is supplied to the winding position. Therefore, the side on which the element is transferred and supplied is referred to as the "front side". Further, the resistance wire is supplied to the element body 10 from the side opposite to the front side with the winding position sandwiched, in a direction perpendicular to the element body rotation axis direction. Therefore, the supply side of this resistance wire is called the "rear side". Further, in the following description, “left side” means the left side when the winding position is viewed from the front side, and “right side” means
Similarly, it means the right side when the winding position is seen from the front side.

Next, the element supply mechanism for supplying the element 10 to the winding position of the resistance wire will be described with reference to FIG.
An element body supply arm holding plate 71 is fixed to the front ends of the two main frame side plates 92, 92. The element body supply arm holding plate 71 includes main frame side plates 92, 9
2, two main frame side plates 92, which project to the front side,
It has a horizontal arch-like shape that is laterally bridged at 92.

A guide rail portion (not shown) is provided on the lower surface of the central portion of the element body supply arm holding plate 71, and the element body supply arm 72 is arranged slidably held by the guide rail portion. Has been done. An element supply air cylinder 73 that drives the element supply arm 72 is arranged on the upper surface of the element supply arm holding plate 71.
The element body supply air cylinder 73 moves the element body supply arm 72 supporting the element body 10 so as to approach or separate from the winding position.

The element body supply arm 72 is an element body supply arm 7.
A plate-shaped arm main body 721 slidably held by two guide rails, and two arm tip portions 7 provided at the tips of the arm main bodies 721 and 21 via two swing shaft rods 722.
23 and two element body supply rods 72 fixed to the tip of the arm tip 723 in a state of protruding in parallel toward the winding position.
4 and.

Then, the arm swinging drive source 725 built in the arm body 721 causes the arm tip 723 to move.
Oscillates vertically with the oscillating shaft rod 722 as an axis, so that the element body supply rod 724 also oscillates vertically. The element body supply rod 724 protruding in the horizontal direction has a step portion provided on the way and has a shape that is lowered one step from the way. The front half of the step portion extends obliquely upward. Therefore, as shown in FIG. 1, the element body 10 is locked at the corners below the step portion.

The operation of the element body supply arm 72 will be described. The unwound element bodies 10 are sequentially sent to the element body supply arm 72 one by one from an element body pool (not shown) in which a large number of element bodies 10 are pooled by an element body feeder (not shown). The element body supply arm 72 that has received the element body 10 is retracted to a predetermined retracted position away from the winding position.

Then, the body supply air cylinder 73 is driven to support the body 10 and the body supply arm 72.
Is moved toward the winding position. And body 1
When 0 reaches the winding position, the movement is stopped. That is, the stroke of the piston of the element body supply air cylinder 73 is set so that the element body 10 just stops at the winding position.

In this way, when the element body 10 is supplied to the winding position, the element body holding portion 2 to be described later operates and the element body 10 is moved.
Hold and move to the winding operation.

Next, the structure of the element body holder 2 in this automatic resistance wire winding machine will be described with reference to FIGS. 1, 2 and 3. FIG. 2 is a partial cross-sectional view for explaining a holding structure of the element body 10 by the element body holding portion 2 of the resistance wire automatic winding machine of FIG. 1. FIG. 3 is a plan sectional view for explaining the overall configuration of the element holding unit of the automatic resistance wire winding machine of FIG.

The holding structure of the element body 10 is schematically shown in FIG. That is, the element body holding part 2 in this automatic resistance wire winding machine is provided with a pair of hollow element-holding tubes 21 and 21 such as straws, and each of the element body holding tubes 2 is provided.
1 and 21 are arranged so that their open ends face each other.
The element body 10 is held by inserting the 0 lead wires 12a and 12b into the inside from the open ends. Therefore, the element body holding cylinders 21 and 21 are connected to the lead wires 12a and 12b.
It will be in a state where it is enclosed inside.

The straw-shaped element body holding cylinder 21,
The inner diameter of 21 gradually increases toward the open end into which the lead wires 12a and 12b enter. Therefore,
As will be described later, when the element holding cylinders 21 and 21 approach each other and clamp both ends of the element body 10, the lead wires 12a and 12
b can smoothly enter the inside from the opening end.

Next, the overall structure of the element body holding portion 2 will be described with reference to FIGS. 1 and 3. Element body holding portions 2 to be described below are entirely fixed to the above-described main frame side plates 92, 92 which are provided upright at both ends of the main frame bottom plate 91 shown in FIG. Since the structure of the element holding unit 2 is bilaterally symmetrical with respect to the winding position, the following description focuses on the structure on one side.

First, a circular hole is provided in the main frame side plate 92, which is erected on the side edge of the main frame bottom plate 91, and a cylindrical casing 24 is fitted and fixed in this hole. A cylindrical spindle 22 is loosely fitted inside the casing 24, and a bearing member 25 that allows rotation and linear movement of the spindle 22 is interposed in a gap between the spindle 22 and the casing 24. There is.

Then, as shown in FIG. 3, the element holding cylinder 21 is fixed to the tip end surface of the spindle 22 and horizontally protrudes toward the winding position, and the other element holding cylinder 21. It is facing the open end of.
An output shaft of a body rotating motor 3 as a body rotating means is connected to the rear end surface of the spindle 22. As a result, the spindle 2 is rotated in the casing 24 by driving the body rotating motor 3 as the body rotating means.
2 rotates, whereby the element body 10 held by the element body holding cylinder 21 rotates.

When holding the element body, the element body holding cylinder 21 is in a state in which the element body 10 is sandwiched between the terminal caps 11a and 11b at both ends together with the other element body holding cylinder 21. Since the mechanism for rotating the element body described above is also provided on the side of the other element body holding cylinder 21, the element body 10 held by the pair of element body holding cylinders 21 and 21 is Two
According to the rotations of 1 and 21, they are simultaneously rotated by the frictional force.

The body rotating motor 3 as the body rotating means for causing the above-mentioned rotation is attached while being held by the rotating means holding plate 31 in a vertical posture. The rotating means holding plate 31 is provided with four guide holes at diagonally opposite positions of the square. On the other hand, the main frame side plate 9
One end of four support / guide rods 25 is fixed to 2 and extends horizontally outward. The four support / guide rods 25 are loosely fitted in the guide holes of the rotating means holding plate 31, so that the rotating means holding plate 31 is placed in a state of being suspended by the support / guide rods 25. ing. That is,
The body rotating motor 3 as the body rotating means is supported by the frame side plate 92 via the rotating means holding plate 31 and the four support / guide rods 25.

The other ends of the four support / guide rods 25, one end of which is fixed to the frame side plate 92, are of the advancing / retreating means holding plate 26 arranged to face the vertical rotating means holding plate 31. It is fixed to the front. An air cylinder holder 23 for advancing / retracting the element holding cylinder for advancing / retracting the element holding cylinder 21 is fixed to the back surface of the advancing / retreating means holding plate 26. The piston is configured to be able to project.

The piston of the air cylinder holder 23 for advancing / retracting the body holding cylinder is fixed to the back surface of the rotating means holding plate 31 suspended by the supporting / guide rod 25 as described above. Therefore, the air cylinder linda 2 for advancing and retracting the body holding cylinder
When 3 is driven, the piston pushes out the rotation means holding plate 31, whereby the rotation means holding plate 31 and the element body rotation means 3 advance integrally while being guided by the support and guide rod 25. As a result, the spindle 22 directly connected to the output shaft of the body rotating means 3 moves forward, and the body holding cylinder 21 also moves forward accordingly.

That is, the above-mentioned four support / guide rods 25
Has a role of suspending and holding the rotating means holding plate 31 and guiding a linear movement by the air cylinder 23 for advancing and retreating the body holding cylinder arranged at the rear. The advancing / retreating mechanism as described above is also provided in the other element body holding cylinder 21 arranged to face each other. Due to the function of this advancing / retreating mechanism, the pair of element body holding cylinders 21 and 21 approach or separate from each other. To do.

Next, the operation of the element body supply arm 72 and the resistance wire element body holding portion 2 will be described. When the element body supply arm 72 supplies the element body 10 to the winding position as described above, the advance / retreat mechanism of the element body holding cylinders 21 and 21 described above operates and the pair of element body holding cylinders 21 and 21 moves forward. approach. Then, as described above, the lead wires 12a extending from both ends of the element body 10,
12b enters the inside from the open ends of the tip ends of the body holding cylinders 21 and 21. Furthermore, the pair of element holding cylinders 2
When the elements 1 and 21 come close to each other, the element body holding cylinders 21 and 21 collide with the terminal caps 11a and 11b, and the terminal caps 11a and 11b
The element body 10 is sandwiched between the portions 11b.

In this state, the two element holding cylinders 2
The approach of 1 and 21 stops. And the body supply arm 7
The second arm tip portion 723 swings downward by the swing mechanism described above. As a result, the element body supply rod 724 is separated from the element body 10 downward. In this state, the element supply air cylinder 73 is driven in the opposite direction, whereby the element supply arm 72 starts moving in a direction away from the winding position,
Reach a predetermined retracted position. Then, the body supply arm 72
The arm tip portion 723 swings upward to assume the initial posture, and enters a standby state for supply of the next element body 10 by the element feeder.

On the other hand, the element body 10 held by the element body holding cylinders 21 and 21 is wound by supplying a resistance wire as described later. Next, the welding means 6, the resistance wire supply part 4, and the spiral winding means 5 in this automatic resistance wire winding machine will be described. First, the welding means 6 will be described with reference to FIGS. 1, 4 and 5.

FIG. 4 is a vertical sectional view of the welding means 6 of FIG. Note that, in FIG. 4, the illustration of the element supply mechanism, the element holding portion, and the like described above is omitted. The welding means 6 in the automatic resistance wire winding used in this embodiment performs so-called spot welding by energization. That is, the material is melted and welded by applying a large current. Therefore, the welding means 6 is composed of the cathode rod 61 and the anode rod 62. The cathode rod 61 and the anode rod 62
As shown in FIG. 4, they are arranged so as to face each other on a vertical straight line, and the upper side is a cathode rod 61 and the lower side is an anode rod 62.

The cathode rod 61 and the anode rod 62 as described above are
A cathode mounting cylinder 611 and an anode mounting cylinder 6 arranged above and below a movable frame 52 that is movable in the direction of the body rotation axis.
It is fixed via 21 respectively. Detailed structures of the cathode mounting cylinder 611 and the anode mounting cylinder 621 will be described later, and the moving frame 52 for holding the welding means 6 is described.
The moving mechanism will be described.

FIG. 5 is a view for explaining the moving mechanism of the moving frame, and is a schematic perspective view of the resistance wire winding machine of FIG. 1 seen from the rear side. However, illustration of the resistance wire supply unit 4 and the like in FIG. 1 is omitted. As shown in FIG. 5, the main frame bottom plate 9
The main frame side plates 92, 9 which are erected on both side ends of the main frame 1.
Two circular rod-shaped guide rods 51 are horizontally provided on the upper and lower sides of the unit 2.

On the other hand, the moving frame 52 is a rectangular plate having a large square hole in the center, and is arranged with its long side oriented in the height direction. At both ends of the moving frame 52, a small square erection end plate 53 is fixed so as to project rearward from the end. This erection end plate 53 is provided with the upper and lower two guide rods 5 at each end of the moving frame 52.
A total of four pieces of two pieces are provided at the same height as the height of 1, and a circular guide hole is provided. still,
A bearing (not shown) is provided on the inner peripheral surface of the guide hole.

The guide rod 51 is fitted in the guide hole of the erection end plate 53, whereby the movable frame 52 is guided by the guide rod 51 and is slidable. Held in. Further, at a position slightly lower than the upper guide rod 51, a precision screw rod 54 for converting rotational movement into linear movement is arranged. The moving frame motor 55 is fixed to the outer surface of the upper back portion of the one main frame side plate 92. A hole for an output shaft is formed in the main frame side plates 92, 92 at a position where the moving frame motor 55 is fixed, and the output shaft of the moving frame motor 55 is internally provided through the output shaft hole. It is in a protruding state. The protruding tip of the output shaft is connected to the precision screw rod 54. As the moving frame motor 55, a motor capable of rotating in the forward and reverse directions is used.

Further, at the height position of the precision screw rod 54 on the back surface of the moving frame 52, a square screw unit holding plate 56 is fixed so as to project rearward. The screw unit holding plate 56 is provided with a circular hole, and the cylindrical screw unit 57 is arranged in a state of being fitted and fixed in the hole. In this screwing unit 57, the screw formed on the inner surface of the cylinder is screwed into the precision screw rod 54, and thereby the rotation of the precision screw rod 54 is converted into the linear movement of the moving frame 52. ..

Therefore, when the moving frame motor 55 is driven, the precision screw rod 54 connected to the output shaft of the motor 55 rotates. By this rotation, the screwing unit 57 screwed into the precision screw rod 54 linearly moves to the left or right according to the direction of rotation. As a result, the moving frame 52 moves to the left or right as a whole. This moving frame 5
By the movement of 2, the welding cathode rod 61, the anode rod 62, and the resistance wire supply unit 4 to be described later are moved leftward or rightward, that is, in the direction of the axis of rotation of the element body.

Returning to FIG. 4, the structure of the welding means 6 will be further described. First, as described above, on the front surface of the moving frame 52, two rectangular tubular electrode attachment cylinders 611 and 621 are fixed vertically. The upper side is a cathode mounting cylinder 611, and the lower side is an anode mounting cylinder 621. First, the upper cathode side will be described. Inside the cathode mounting cylinder 611 fixed to the moving frame 52, a cathode elevating air cylinder 612 is arranged and fixed. The cathode raising / lowering air cylinder 612 is fixed to the lower surface of the upper lid portion of the cathode mounting cylinder 611, and is arranged with its piston facing downward.

Inside the cathode mounting cylinder 611, below the cathode lifting air cylinder 612,
The cathode mounting upper plate 613 is arranged in a horizontal posture. The cathode mounting cylinder 611 is fixed to the tip of the piston of the cathode lifting air cylinder 612 described above. Therefore, when the piston of the cathode lifting air cylinder 612 is driven to descend, the cathode mounting upper plate 613 moves down, and when the piston of the cathode lifting air cylinder 612 is driven to move upward, the cathode mounting upper plate 613. Is rising.

Similarly, in the inside of the cathode mounting cylinder 611, a cathode mounting lower plate 615 is similarly arranged in a horizontal posture at a position slightly below the cathode mounting upper plate. Four cathode mounting plate fixing columns 616 are vertically suspended between the cathode mounting upper plate 513 and the cathode mounting lower plate 615. The cathode rod 61 is fixed to the lower surface of the cathode mounting lower plate 615 so as to project vertically downward. The bottom plate portion of the cathode mounting cylinder 611 is provided with a hole for passing a cathode rod, and the tip of the cathode rod 61 fixed to the cathode mounting lower plate 615 passes through this hole for passing a cathode to the lower side of the cylinder. Overhangs.

An annular cathode side spacer 617 is arranged on the lower surface of the bottom plate portion of the cathode mounting cylinder 611, and the cathode side substrate 618 is fixed to the lower side of the cathode side spacer 617. There is. That is, the cathode mounting cylinder 611 fixed to the moving frame 52 has a structure in which the cathode side substrate 618 is held on the lower surface via the cathode side spacer 617. The cathode side substrate 618 is provided with a hole for passing a cathode similarly to the bottom plate portion of the cathode mounting cylinder 611, and the cathode rod 61 penetrates the bottom plate portion, the cathode side spacer 617 and the cathode side substrate 618. It projects downward.

Although the cathode side spacer 627 is fixed to the cathode mounting cylinder 621, the cathode mounting cylinder 6 is fixed.
It is arranged rotatably about a vertical axis while sliding on the lower surface of 21. Then, when the cathode elevating air cylinder 612 is driven as described above, the cathode rod 61 moves downward while penetrating the hole of the bottom plate portion of the cathode mounting cylinder 611, the spacer 617, and the hole of the cathode side substrate 618. Moving. Further, when the piston of the air cylinder 612 for raising and lowering the cathode is driven to rise, the cathode mounting upper plate 613, the cathode mounting plate supporting column 616 and the cathode mounting lower plate 615 integrally rise, whereby the cathode rod 61 itself. Is also rising.

Next, the structure on the lower anode side will be described. First, similarly to the cathode side, on the anode side as well, a square tubular anode mounting cylinder 621 is fixed to the lower side of the front surface of the moving frame 52. Then, this anode mounting cylinder 621
An anode elevating air cylinder 622 is mounted and fixed on the upper surface of the bottom lid part of the. This air cylinder 62 for raising and lowering the anode
2 is arranged with its piston facing upward.

Inside the anode mounting cylinder 621, the anode mounting lower plate 623 is arranged in a horizontal posture above the piston of the anode lifting air cylinder 622. The anode mounting lower plate 623 is fixed to the tip of the anode lifting air cylinder 622. Therefore, when the piston of the anode raising / lowering air cylinder 622 is driven to rise, the anode mounting lower plate 623 rises, and when the piston of the anode raising / lowering air cylinder 622 is driven to descend,
The anode mounting lower plate 623 is adapted to descend.

On the lower plate 623 for mounting the anode, four anode mounting plate supporting columns 626 are provided upright diagonally, and the anode mounting upper plate 625 is horizontally placed on the anode mounting plate supporting columns 626. It is fixed in a proper posture. The anode rod 62 is fixed to the upper surface of the above-mentioned anode mounting upper plate 625, and is arranged with its tip protruding upward.

Further, on the upper surface of the anode mounting cylinder 621,
A drive source mounting arm plate 82 for riding on the resistance wire is fixed. A ring-shaped anode side spacer 627 is arranged on the resistance wire riding drive source mounting arm plate 82. The anode side spacer 627 is provided on the anode mounting cylinder 62 through the resistance wire riding drive source mounting arm plate 82.
Although fixed to No. 1, it is rotatably arranged around a vertical axis while sliding on the upper surface of the resistance-wire-riding drive source mounting arm plate 82. Then, on the anode side spacer 627, the resistance gear riding first gear 81
Is fixed, and this resistance wire riding first gear 81
An anode-side substrate 628 is fixed on the above.

Drive source mounting arm plate 8 for riding the resistance wire
2, first gear 81 for riding the resistance wire and the substrate 62 on the anode side
8 is provided with a hole for the anode rod 62 to project upward. The anode rod 62 is arranged so as to project above the anode-side substrate 628 through these holes. As is clear from the above description, the air cylinder 622 for lifting and lowering the anode is provided.
When driven, the anode mounting lower plate 623, the anode mounting plate supporting column 626 and the anode mounting upper plate 625 are integrally lifted, whereby the anode rod 62 itself moves the resistance wire riding first gear 8.
1, the resistance wire riding drive source mounting arm plate 82 and the anode side substrate 628 are penetrated and moved upward.

When the piston of the air cylinder for raising and lowering the anode 622 is driven so as to retract, the anode mounting lower plate 623, the anode mounting plate supporting pillar 626, and the anode mounting upper plate 62.
5 moves down integrally, and as a result, the anode rod 62 itself moves downward. Also, the upper cathode side substrate 618
An upper support arm 43, which is long in the horizontal direction, is fixed to the lower surface of the support arm 43, and a supply nozzle unit support pillar 44 is vertically provided at the rear end of the support arm 43. The lower end of the supply nozzle unit support pillar 44 is fixed to the anode side substrate 628.

That is, the cathode side substrate 618 and the anode side substrate 628 are vertically arranged horizontally by suspending the supply nozzle unit support pillar 44, and the resistance wire supply nozzle unit 41 is disposed on the anode side substrate 628. It is fixed. And
The cathode-side substrate 618 and the anode-side substrate 628 can be integrally swung about a vertical swing shaft by the mechanism for riding the resistance wire as described below.

In other words, the resistance wire riding drive source mounting arm 82 fixed so as to be sandwiched between the anode side substrate 628 and the resistance wire riding first gear 81 has the front side, that is, the above-mentioned element body support. It extends horizontally on the side where the arm 72 is arranged. This resistance wire driving source mounting arm 82
An upper surface of a resistance wire riding drive source 83 composed of a motor, a rotary solenoid, or the like is fixed to the tip of the. That is, the resistance wire riding drive source 83 is fixed to the anode mounting cylinder 621 while being held by the resistance wire riding drive source mounting arm 82.

The output shaft of the resistance wire riding drive source 83 is directed upward, and the resistance wire riding second gear 84 is fixed to the tip of the output shaft. A transmission means 85 such as a timing belt is stretched between the second resistance wire riding gear 84 and the first resistance wire riding gear 81. Therefore, when the resistance wire riding drive source 83 is driven, the driving force is transmitted to the resistance wire riding first gear 81 via the resistance wire riding second gear 84 and the transmission means 85 to drive the resistance wire riding up. The first gear 81 rotates or swings by a predetermined angle.

As a result, the anode side substrate 628 swings.
The axis of this swing is in the vertical direction, and is set at a position slightly ahead of the vertical line along the two cathode rods 61 and anode rods 62 facing each other. In addition, the cathode side substrate 618
Is fixed to the anode side substrate 628 via the supply nozzle unit support pillar 44 as described above, and therefore the oscillation of the anode side substrate 628 also causes the cathode side substrate 618 to swing. That is, the supply nozzle unit support pillar 44, the cathode side substrate 618, and the resistance wire supply section 4 that are integrally fixed to the anode side substrate 628 swing together. The resistance wire riding drive source 83 is for rotatively driving a motor or a rotary solenoid. The riding operation of the resistance wire due to this rotation will be described later.

Next, the resistance wire supply unit 4 in this automatic resistance wire winding machine will be described with reference to FIGS. 1 and 6. FIG. 6 is a perspective view of the resistance wire supply unit 4 shown in FIG. 1 viewed from the rear side. In the resistance wire supply section 4 of this automatic resistance wire winding machine, after the tip end of the resistance wire 13 is welded to, for example, one terminal cap 11a by the above-mentioned welding means 6, the element body rotating means 3 rotates the element body 10. Thus, the resistance wire 13 is wound around the peripheral surface of the element body 10.

As shown in FIG. 1, the unwound resistance wire 13
Is wound around the drum-shaped resistance wire bobbin 400 in a large amount, and the resistance wire bobbin 400 is rotated only by the torque of the element body 10 which is rotated by the mechanism described above, whereby the resistance wire 13 is unwound, It is wrapped around the body 10. The component in the supply path of the resistance wire 13 is
The description will be given from the order closer to the winding position. First, on the rear side of the winding position, a resistance wire supply nozzle unit 41 for supplying the resistance wire 13 at a right angle and a horizontal direction with respect to the element body rotation axis direction is arranged.

The resistance wire supply nozzle unit 4
In the rear of 1, there is arranged a third guide pulley 42 which is rotatably supported by a rotary shaft in the direction of the body rotary shaft. As is apparent from FIG. 6, the third guide pulley 42 includes the nozzle unit mounting plate 4 that constitutes the resistance wire supply nozzle unit 41.
It is supported by a third pulley support rod 422 fixed to the rear end surface of the shaft 11.

A second guide pulley 402, which is rotatably supported by a rotary shaft that is perpendicular to the rotary axis of the element body and is horizontal, is arranged vertically above the third guide pulley 42. Similarly, a first guide pulley 401, which is rotatably supported by a rotary shaft in a horizontal direction at a right angle to the rotary shaft direction of the element body, is disposed diagonally below and to the left of the second guide pulley 402.

A resistance wire bobbin 400, which is rotatably supported by a rotary shaft in a horizontal direction at a right angle to the rotary shaft direction of the element body, is arranged diagonally to the lower right of the first guide pulley 401. The resistance wire bobbin 400 is rotatably arranged by a bobbin holder (not shown). As is clear from the above description, the resistance wire bobbin 400, the first guide pulley 401, and the second guide pulley 402 are all arranged on the same plane parallel to the element body rotation axis direction, and The axis of rotation is set in a direction perpendicular to the direction. As described above, the resistance wire 13 delivered from the resistance wire bobbin 400 is stretched so as to reach the resistance wire supply nozzle unit 41 via the first guide pulley 401, the second guide pulley 402, and the third guide pulley 42. Has been done.

The supply path of the resistance wire 13 is constructed as described above, but in the present embodiment, the resistance wire supply section 4 is composed of the resistance wire supply nozzle unit 41 and the third guide pulley 42. explain. This is because the resistance wire supply nozzle unit 41 and the third guide pulley 42 move integrally in the element body rotation axis direction by the movement of the moving frame 52.

The structure of the resistance wire supply unit 4 composed of the resistance wire supply nozzle unit 41 and the third guide reel 42 will be described in more detail. Resistance wire supply nozzle unit 4
The role of 1 is to separate the resistance wire 13 from the element body 10 while pressing the resistance wire 13 in the middle thereof in order to separate the resistance wire 13 during welding after winding, which will be described later. Then, at the time of winding the next element body 10, the tip end of the separated resistance wire 13 is advanced to move the terminal cap 11a or 11b.
It is to be placed on top.

The structure of the resistance wire supply nozzle unit 41 will be described in more detail. Resistance wire supply nozzle unit 41
Is entirely fixed on the above-mentioned anode side substrate 628. That is, as shown in FIG. 1, the anode-side substrate 628 has a shape that extends long behind the anode rod 62 that protrudes vertically upward, and the resistance wire supply nozzle unit 41 is disposed on this.
Is placed and fixed.

As shown in FIG. 6, on the anode side substrate 628, a nozzle unit mounting plate having an inverted L-shaped cross-section, which is composed of a vertical portion 411a and a horizontal portion 411b extending rightward from the vertical portion 411a. 411 is vertically fixed along the length direction of the nozzle.

The vertical portion 41 of the nozzle unit mounting plate 411
A long rectangular rod-shaped nozzle base 412 is fixedly attached to the right side surface of the la 1a. In the space between the nozzle base 412 and the horizontal portion 411b of the nozzle unit mounting plate 411, a rectangular rod-shaped resistance wire clamper 413 that is long in the nozzle length direction is arranged. This resistance wire clamper 413
Is fixed to the horizontal portion 411b via a spring (not shown).

On the horizontal portion 411b of the nozzle unit mounting plate 411, the resistance wire clamper 413 can be pressed against the nozzle base 412 through the piston hole provided in the horizontal portion 411b. 415 is fixed. Furthermore, the nozzle base 41
A needle hole body 416 for guiding the resistance wire 13 toward the element body 10 is fixed to the tip of the nozzle base 412.

On the left side surface of the nozzle unit mounting plate 411, a rectangular parallelepiped moving body 417 having two guide through holes that are long in the lengthwise direction of the nozzle is fixed alongside. Two guide rods 418 for a moving body are loosely fitted in the guide through holes of the moving body 417. The two guide rods 418 for the moving body are provided on the anode side substrate 628.
Is erected on the top of the above, and is horizontally mounted on two guide rod installation plates 419 arranged in front of and behind the nozzle in the longitudinal direction.

A moving body return spring 42 is provided between the moving body 417 and the guide rod installation plate 419 on the side close to the winding position.
1 is installed, and the force of the moving body return spring 421 applies a force to the moving body 417 in a direction approaching the winding position. Further, a small protrusion 419 is provided on the left side surface of the moving body 417. And this protrusion 4
Nozzle moving air cylinder 420 having a piston capable of pressing 19 to move moving body 417 in a direction away from the winding position contacts a back surface of guide rod erection plate 419 on the side closer to the winding position. It is fixed by touching it.

In the configuration of the resistance wire supply nozzle unit 41, the resistance wire 13 moves while rubbing on the nozzle base 412, passes through the small hole provided in the needle hole body 416, and rotates. It is supplied to the body 10 and wound. Then, when the winding is completed and the terminal cap 11a or 11b is welded by the above-mentioned welding means 6, the remaining resistance wire 13 is cut off by the following operation.

That is, first, the clamper air cylinder 41
5 operates and the piston pushes down the lower resistance wire clamper 413 against the force of the return spring for the clamper. As a result, the resistance wire clamper 413 connects the resistance wire 13 to the nozzle base 4
It is pressed against 12, and the resistance wire 13 becomes temporarily incapable of rubbing. In this state, next, the nozzle moving air cylinder 420 is operated so that the piston pushes the projection 419 on the side surface of the moving body 417 and moves away from the element body 10 against the force of the moving body return spring 421. The moving body 417 is moved to. As a result, the nozzle unit mounting plate 411 fixed to the moving body 417 moves in a direction away from the element body 10, and the nozzle base 412 and the resistance wire clamper 413 fixed to the nozzle unit mounting plate 411 are also integrally formed. Move away from 10. That is, while the resistance wire clamper 413 presses the resistance wire 13 against the nozzle base 412, these members retreat together.

By such an operation, the remaining resistance wire 13 on the rear side of the welded portion is separated. And
A standby state is maintained behind the element body 10 while maintaining a predetermined retreat distance determined by the stroke of the nozzle moving air cylinder 420. After that, in the next winding of the element body 10 or the second spiral winding, first, the piston of the nozzle moving air cylinder 420 is driven to retract. As a result, the moving body 417 is pulled by the force of the moving body return spring 421, and as a result, the moving body 417 moves or advances in a direction approaching the winding position. As the moving body 417 advances, the resistance wire clamper 413 moves the resistance wire 13 to the nozzle base 4
It moves forward integrally while being pressed against 12.

Then, the projection 419 comes into contact with the piston of the nozzle moving air cylinder 420 that has returned to the original position, and the moving body 417 stops moving forward. This position is set such that the tip of the pressed resistance wire 13 is located on the terminal cap 11a or 11b of the element body 10 to be wound. In this state, the welding means 6 described later operates to weld the tip to the terminal cap 11a or 11b. When welding is completed, the clamper air cylinder 4
The drive of 15 is released, the piston retracts, and the resistance wire clamper 413 rises by the force of the clamper return spring.
As a result, the resistance wire 13 is released from being pressed against the nozzle base 412, and the resistance wire 13 can be rubbed on the nozzle base 412.

Then, in this state, the element body 1 as described above is
The rotation operation of 0 is started, and the winding of the resistance wire 13 around the element body 10 is started. Next, the spiral winding means 5 in this automatic resistance wire winding machine will be described. As described above, the spiral winding means in the invention of the present application, the element body 10 or the resistance wire supply part 4 when the element body 10 is rotated by the element body rotating means 3.
By moving either one of them in the direction of the axis of rotation of the element body, the winding of the resistance wire 13 is made spiral.

The spiral winding means 5 in the automatic winding machine used in the winding method of this embodiment linearly moves not the element body 10 but the resistance wire supply portion 4 in the direction of the element rotation axis. .. That is, in this automatic resistance wire winding machine, the mechanism for moving the moving frame 52 holding the resistance wire supply nozzle unit 41 corresponds to the spiral winding means 5. That is,
A moving frame 52 holding the resistance wire supply unit 4 and an upper and lower 2 for moving the moving frame 52 in the direction of the axis of rotation of the body.
Book guide rod 51, precision screw rod 54, screwing unit 57
It can be said that a mechanism such as the moving frame motor 55 constitutes the spiral winding means 5. That is, after the welding means 6 welds the tip of the resistance wire 13 to the terminal cap 11a or 11b, the moving frame motor 55 drives and moves when the body rotating means 3 rotates the body 10. The frame 52 moves in the direction of the axis of rotation of the element body, whereby the winding of the resistance wire 13 becomes spiral.

Finally, the control system of this automatic resistance wire winding machine will be described. FIG. 7 is a schematic explanatory diagram of a control system of the resistance wire automatic winding machine. The control of the resistance wire automatic winding machine is basically a sequence control, and the controller 100 is provided for performing this sequence control. As shown in FIG. 7, the control target to which the controller 100 sends a control signal is
It is divided into three main parts.

First, there is an air drive system consisting of seven air cylinders. That is, the air cylinder 73 for supplying the element body, the air cylinders 23, 23 for advancing and retreating the two element holding cylinders, the air cylinder 612 for raising and lowering the cathode, and the air cylinder 62 for raising and lowering the anode
2. Control signals are sent to the six air cylinders of the nozzle moving air cylinder 420 and the clamper air cylinder 415 to control the advance / retreat of each piston.

Secondly, the controller 100 sends control signals to five motors or solenoids as an electric system. That is, the arm swinging drive source 725, the element body rotating motors 3 and 3 as the two element body rotating means, the moving frame motor 55, and the resistance wire riding drive source 8
It is 3. Thirdly, a power supply circuit 63 for energizing between the cathode rod and the anode rod to weld the resistance wire to the terminal cap.
The power supply circuit 63 is provided with a switch 6 that is opened / closed by a control signal from the controller 100.
4 is attached.

Although not shown in FIG. 7, the controller 100 has an external input for inputting the resistivity value of the wound resistance wire and the magnitude of the finished resistance value of the resistor to be manufactured. The display unit includes an input panel and a liquid crystal display panel for displaying input data and a calculation result of a later-described built-in computer for confirmation. The control of the controller 100 shown in FIG. 7 will be clarified in the following description of each embodiment.

Next, an embodiment of the resistance wire automatic winding method of the present application using the resistance wire automatic winding machine will be described. The first and second embodiments will be described. The characteristic point of these embodiments is that the spiral winding operation of the resistance wire 13 by the spiral winding means 5 is performed a plurality of times. First, the first embodiment will be described.

First, the resistance wire bobbin 400 wound with a large amount of the resistance wire 13 wound around the element body 10 is set in a bobbin holder (not shown), the resistance wire 13 is pulled out, and the third guide reel 401, second The guide reel 402 and the first guide reel 42 are stretched in this order as shown in FIG. Then, as shown in FIG. 1, the resistance wire supply nozzle unit 41
Set to.

The respective parts of the automatic resistance wire winding machine described above are located at the following primitive positions. That is, the element body supply arm 72 is positioned at a predetermined retracted position away from the winding position while supporting the element body 10. Further, the pair of element body holding cylinders 21 and 21 are located at positions separated from each other. The cathode rod 61 is in the upper retracted position, and the anode rod 62 is in the lower retracted position. Further, the resistance wire supply nozzle unit 41 is located at a predetermined retracted position away from the winding position in a state where the resistance wire clamper temporarily presses the resistance wire 13 against the nozzle base 412. The resistance wire supply nozzle unit 41 is in a posture along a direction perpendicular to the element body rotation axis.

Then, the resistivity of the resistance wire 13 set and the resistance value of the resistor to be manufactured are manually input from the input panel. In the computer built in the controller 100, based on the input data, the resistance wire 1
The winding length of 3 and the number of spiral windings are calculated. Then, when the operation button on the input panel is pressed, an operation start signal is sent to the controller 100.

The controller 100 first sends a piston advance signal to the air cylinder 73 for supplying the body. As a result, the element supply air cylinder 73 is driven and the piston projects forward, and the element supply arm 72 shown in FIG. 1 advances to the winding position and stops. The position of the element body on the stopped element body supply arm 72 is determined by the pair of opposing element body holding cylinders 2.
The stroke length of the piston of the element supply air cylinder 73 is set so as to be aligned with 1 and 21.

Next, the controller 100 sends a piston advance signal to the air cylinders 23, 23 for advancing and retreating the body holding cylinders attached to the pair of body holding cylinders 21, 21. As a result, the air cylinders 23, 23 for advancing / retracting the element body holding cylinders are operated and the piston pushes out the rotation means holding plates 31, 31, and as a result, the pair of element body holding cylinders 21, 21 approach each other. Then, as shown in FIG. 2, the lead wires extending from both ends of the element body 10 enter the inside from the open ends of the tip ends of the element body holding cylinders 21 and 21, and the element body holding cylinders 21 and 21 are connected to the terminal caps 11a and 11b, the terminal caps 11a, 11
The element body 10 is sandwiched between the portions b.

At this position, the air cylinders 23 for advancing and retracting the element holding cylinders 21 and 21 are stopped so that the approaching of the element holding cylinders 21 and 21 is stopped.
The stroke of 23 pistons is set. Therefore, the element holding cylinders 21 and 21 are connected to the terminal caps 11a and 11
While pressing b lightly, two element holding cylinders 21, 21
Approaching stops. After the driving time of the air cylinders 23, 23 for advancing and retracting the body holding cylinder, the controller 100
Sends a drive signal to an arm swinging drive source 725 built in the body supply arm 72, and as a result, the body supply rod 72
The reference numeral 4 separates downward from the element body 10. Then, the controller 100 sends a piston retreat signal to the element supply air cylinder 73, the element supply arm 72 starts moving in a direction away from the winding position, and reaches the aforementioned original position and stops.

When the backward drive time of the piston of the body supply air cylinder 73 has elapsed, the controller 100 sends a piston backward signal to the nozzle moving air cylinder 420. As a result, the resistance wire clamper 413 and the nozzle base 4
12 and 12 move integrally toward the element body 10. The stroke of the piston of the nozzle moving air cylinder 420 is set so that the tip of the resistance wire 13 pressed against the nozzle base 412 by the resistance wire clamper 413 is positioned above the left terminal cap 11a. There is.

When the backward drive time of the piston of the nozzle moving air cylinder 420 elapses, the controller 100
Sends a simultaneous piston advance signal to the cathode lift air cylinder 612 and the anode lift air cylinder 622. As a result, the cathode rod 61 descends and the anode rod 62 rises. As a result, the cathode rod 61 and the anode rod 62 are in a state of vertically sandwiching the left terminal cap 11a on which the tip of the resistance wire 13 is positioned. That is, the cathode lifting air cylinder 61
The stroke length of the piston of No. 2 is such that the tip of the cathode rod 61 is in a position where the tip of the cathode rod 61 abuts lightly on the upper surface of the terminal cap 11a. The length is set to a position where the cap 11a is brought into light contact with the lower surface.

When the driving time of the cathode raising / lowering air cylinder 612 and the anode raising / lowering air cylinder 622 elapses, the controller 100 sends a closing signal to the switch 64 attached to the welding power source circuit 63, and the cathode rod 61 and the anode rod 61. And 62 are energized. As a result, the tip of the resistance wire 13 melts. After a short energization time of about 1 second, an open signal is sent from the controller 100 to the switch 64, and the energization is stopped.

Thereafter, the controller 100 causes the cathode lift air cylinder 612 and the anode lift air cylinder 62 to move.
A piston retreat signal is sent to 2, the cathode rod 61 rises and the anode rod 62 descends to return to the original position. The above is the first operation in the claims. Then, after the operation time of the piston retreating of the cathode elevating air cylinder 612 and the anode elevating air cylinder 622 elapses, the controller 100 causes the element rotating motors 3 and 3 as the element rotating means and the moving frame motor 55. Send a drive signal to the same time. As a result, the element body 10 starts to rotate by the rotation of the element body holding cylinders 21 and 21, and at the same time, the resistance wire supply unit 4 starts to move rightward in the element body rotation axis direction by the movement of the moving frame 52.

The drive time of the body rotating motors 3 and 3 and the drive time of the movable frame 52 as the body rotating means are automatically set according to the winding length calculated by the computer incorporated in the controller 100 as described above. Calculated. Here, in the present embodiment, the rotational speeds of the element body rotating motors 3, 3 as the element body rotating means are kept constant regardless of the winding length. Therefore, the moving frame motor 55
The rotating speed of the moving frame 52 is adjusted to change the moving speed of the moving frame 52, thereby adjusting the winding length.

For example, the rotational speed (rps) of the element rotating motors 3 as the element rotating means is v _1, and the moving speed of the moving frame 52 by the moving frame motor 55 is v ₂ (m / s). And Then, the body rotating motors 3 and 3 as the body rotating means and the moving frame motor 55.
Means that the driving is started at the same time and the driving is stopped at the same time, so that the driving time is t. Further, if the outer diameter 2r of the element body, MakiSocho of L _k is calculated by ^{_{L k = {r 2 × (}} 2πv 1) 2 + v 2 2} 1/2 × t ...... formula (1) ..

In equation (1), r and v ₁ are constant, and L _k is input from the input panel, and both are known. Since the length of the element body 10 around which the resistance wire 13 is wound is always constant, letting this be L _s , v ₂ and t
Is defined by the relationship of L _s = v ₂ × t (Equation 2). Therefore, v ₂ and t that can achieve L _k are calculated from the equations (2) and (1).

Then, a drive time command t is sent to the body rotating motors 3, 3 as the body rotating means, and at the same time v
A command for the rotational speed and the driving time of t that gives a moving speed of ₂ is sent to the moving frame motor 55. As a result, the resistance wire 13 is spirally wound around the peripheral surface of the element body 10 with a length of L _k .

The above is the second operation in the claims.

In the third operation, when the rear end of the resistance wire 13 is welded, the resistance wire 13 is mounted on the terminal cap as follows. FIG. 8 is a perspective view illustrating a riding operation of the resistance wire. As shown in FIG. 8, the outer diameters of the terminal caps 11 a and 11 b attached to both ends of the element body 10 are slightly larger than the outer diameter of the element body 10. Therefore, the end surfaces of the pressure-applied portions of the capped terminal caps 11 a and 11 b form a step with respect to the peripheral surface of the element body 10.

If the height of the step is higher than the thickness of the resistance wire 13 to be wound, only the linear movement operation of the resistance wire supply unit 4 while rotating the element body 10 will be described later. Then, the resistance wire 13 may not be able to get over this step. Therefore, the resistance wire supply unit 4 is integrally swung together with the anode side substrate 628 around the vertical swing axis as described above,
As shown in FIG. 8, the rear end of the wound resistance wire 13 is mounted on the terminal caps 11a and 11b. The swing axis is set slightly forward of the vertical line where the cathode rod 61 and the anode rod 62 face each other. Therefore, the above-mentioned swing slightly swings the facing positions of the cathode rod 61 and the anode rod 62, and the terminal caps 11a and 11b.
Will be located above.

In such a resistance wire riding operation, the controller 100 drives the resistance wire riding drive source 8 as described above.
3 by sending a drive signal of a predetermined angle. After the resistance wire 13 is spirally wound around the peripheral surface of the element body 10 in this manner, the controller 100 sends a drive signal to the resistance wire riding drive source 83 to cause the resistance wire 13 to travel.
The ride operation is performed. The swinging direction at this time is rightward because the user rides on the right terminal cap 11b.

After the drive time for riding the resistance wire 13 elapses, the controller 100 sends a simultaneous piston advance signal to the cathode elevating air cylinder 612 and the anode elevating air cylinder 622 to lower the cathode rod 61. The anode rod 62 is raised. Then, the left terminal cap 11
As in the case of a, the controller 100 has the switch 6 attached to the welding power supply circuit 63 with the cathode rod 61 and the anode rod 62 sandwiching the right terminal cap 11b vertically.
4, a closing signal is sent to energize the cathode rod 61 and the anode rod 62 to weld the rear end of the wound resistance wire 13.

At this time, in a state where the resistance wire 13 is melted by energization, the controller 100 sends a piston advance signal to the clamper air cylinder 415 to press the resistance wire 13 against the nozzle base 412 in the same manner as described above and temporarily. Fixed to. Then, the controller 100 sends a piston advance signal to the nozzle moving air cylinder 420 to retract the resistance wire supply nozzle unit 41 by a predetermined distance. As a result, the resistance wire 13 is separated from the melted portion.

Next, the controller 100 sends an open signal to the switch 64 attached to the welding power supply circuit 63 to stop the energization, and simultaneously sends a piston retreat signal to the cathode elevating air cylinder 612 and the anode elevating air cylinder 622. To raise the cathode rod 61 and lower the anode rod 62. After the driving time of the cathode lift air cylinder 612 and the anode lift air cylinder 622 elapses, the controller 100
A return signal is sent to the resistance wire riding drive source 83, and the resistance wire supply unit 4 together with the anode side substrate 628 is swung in the opposite direction to return to the initial position. That is, the resistance wire supply nozzle unit 41 is in a posture along the direction perpendicular to the axis of rotation of the element body as at the beginning.

With the above, the third operation is completed, whereby the first spiral winding step is completed. Next, the following reset process is performed. First, the controller 100 sends a backward movement signal to the moving frame motor 55. As a result, the moving frame motor 55 starts rotating in the reverse direction, and the moving frame 52 starts moving in the reverse immediate left direction. Then, it moves to the position of the left terminal cap 11a and stops.

When the driving time in the reverse direction of the moving frame motor 55 has elapsed, the controller 100 sends a welding position adjusting rotation signal to the element rotating motors 3, 3 as the element rotating means. The welding position adjusting rotation signal is for preventing the welding position of the left terminal cap 11a in the first spiral winding step from overlapping with the welding position of the left terminal cap 11a in the second spiral winding configuration. .. That is, the total rotation angle of the element body 10 in the first spiral winding step can be known from the above-mentioned v ₁ and t. Therefore, if it is a value close to 2π, the welding positions may overlap as it is. Therefore, a signal for rotating the element body 10 by a predetermined angle is sent from the controller 100 to the element body rotation motors 3, 3 as the element body rotation means, and the terminal cap 1
1a is rotated by a predetermined angle so that the welding positions do not overlap.

The above-described operation is performed in the reset step. Then, the second spiral winding step is performed next. In the second spiral winding step, the first to third operations in the first spiral winding step are repeated, which will be briefly described below. First, the controller 100 sends a piston advancing signal to the cathode elevating air cylinder 612 and the anode elevating air cylinder 622, and at the same time sends a closing signal to the switch 64 of the welding power supply circuit 63 to remove the tip of the remaining resistance wire 13. Weld to the left terminal cap 11a.

Then, similarly to the first spiral winding step, the moving frame motor 55 is driven while operating the body rotating motors 3 and 3 as the body rotating means to rotate the body 10. Then, the resistance wire supply unit 4 held by the moving frame 52 is linearly moved to the right, and the resistance wire 13 is spirally wound around the peripheral surface of the element body 10. The winding length of the resistance wire 13 at this time is the same as that in the first spiral winding step, and therefore v ₁ , v ₂ , and t are also the same. For this reason,
The resistance wire 13 wound in the second spiral winding step does not intersect with the resistance wire 13 wound in the first spiral winding step, and similar spirals are drawn at equal intervals.

Then, the same operation as the third operation in the first spiral winding step is performed to weld the rear end of the resistance wire 13 to the right terminal cap 11b. This completes the second spiral winding step. In this embodiment, the resistance wire 13 wound in the second spiral winding step does not intersect with the resistance wire 13 wound in the first spiral winding step as described above. Are not always necessary and may be crossed separately. Therefore, it is also possible to make the winding length in the first spiral winding step different from the winding length in the second spiral winding step. However, if the resistance wire 13 is wound so as not to cross it, the degree of unevenness on the peripheral surface of the element body 10 after winding is small, so that there is an effect that the resin coating in the subsequent step is easy.

A second embodiment of the resistance wire automatic winding method of the present application using the above resistance wire automatic winding machine will be described below. The first spiral winding step of the second embodiment is the same as the case of the first embodiment described above, so description thereof will be omitted.
The reset process will be described. In the state where the third operation in the first spiral winding step described above is completed, the resistance wire supply unit 4
Is located behind the right terminal cap 11b. In this state, the controller 100 sends a welding position adjusting rotation signal similar to that in the reset step of the first embodiment to the element body rotating motors 3, 3 as the element body rotating means. still,
In the first embodiment described above, adjustment of the welding position is not necessary unless the total rotation angle of the element pair 10 in the first spiral winding step is a positive multiple of 2π, but in the second embodiment, The resistance wire 1 is attached to the right terminal cap 11b in the third operation.
Since the remaining resistance wire 13 is welded to the right terminal cap 11b after welding 3, the adjustment of the welding position is an essential operation.

When the drive time of the body rotating motors 3 as the body rotating means by the welding position adjusting rotation signal has elapsed, the controller 100 sends a piston retreat signal to the nozzle moving air cylinder 420. As a result, the piston of the nozzle moving air cylinder 420 moves backward, and the moving body 417 moves in the direction approaching the winding position by the force of the moving body return spring 421, and the resistance wire supply nozzle unit 4
1 generally advances toward the element body 10. Then, the tip of the remaining resistance wire 13 temporarily fixed by the resistance wire clamper 413 is positioned above the right terminal cap 11b. The tip of the remaining resistance wire 13 is in an appropriate position so as not to overlap with the welding position of the rear end of the resistance wire 13 wound in the first spiral winding step by the rotating operation for adjusting the welding position. -ing

The above is the reset process in the second embodiment. Next, a second spiral winding step having the following fourth operation, fifth operation, and sixth operation is performed. First, after the operation time of the forward movement operation of the resistance wire supply nozzle unit 41 has elapsed, the controller 100 sends a piston forward movement signal to the cathode elevating air cylinder 612 and the anode elevating air cylinder 622 to perform the first spiral winding step. As in the first operation, a closing signal is sent to the switch 64 of the welding power supply circuit 63 so that the tip of the remaining resistance wire 13 is connected to the right terminal cap 1
Weld to 1b. Then, the cathode lift air cylinder 61
2 and a piston retreat signal are sent to the air cylinder 622 for raising and lowering the anode to return the cathode rod 61 and the anode rod 62 to their original positions.

The above is the fourth operation. Next, as a fifth operation, the controller 100 sends a rotation signal to the body rotating motors 3, 3 as a body rotating means and at the same time sends a reverse rotation signal to the moving frame motor 55 to reverse the direction. Perform a spiral winding operation. At this time, the rotational speed v ₁ of the body rotation motor 3,3 as body rotating means, the moving speed v ₁ and the drive time t of the movable frame 52 by rotation of the moving frame motor 55 are both the first operation Is the same as the above case, and therefore the winding length L _k is also the same.

Since the direction of movement of the moving frame 52 is opposite to that in the first spiral winding step, and the direction of rotation of the element body rotation motor is the same as that in the first spiral winding step. The wound resistance wire 13 wound by means of intersects with the resistance wire 13 wound in the first spiral winding step. Even if the resistance wires 13 are crossed, if the winding length is the same, the circuit is equivalent to the case where they are not crossed as in the first embodiment, and this difference is not essential. Absent. Further, the same v ₁ and v ₂ are used so that the winding length is the same, but this is not essential and different v ₁ and v ₂ may be used.

In this way, the fifth operation, which is the spiral winding operation in the reverse direction, is performed while moving the resistance wire supply nozzle unit 41 in the reverse direction. Then, as the sixth operation, the same operation as the third operation of the second spiral winding step in the first embodiment is performed. That is, the controller 100 sends a drive signal to the resistance wire riding drive source 83, and the anode side substrate 62.
The resistance wire supply unit 4 together with 8 is swung to the left, and the resistance wire 13
Is mounted on the left terminal cap 11a. In this state, a piston advance signal is sent to the cathode elevating air cylinder 612 and the anode elevating air cylinder 622, and then a closing signal is sent to the switch 64 of the welding power supply circuit 63 to weld the resistance wire 13.

After that, when the same operation for separating the resistance wire 13 as described above is performed, the sixth operation is completed and the second spiral winding step is completed. In the second embodiment, since the element body 10 is also wound during the returning operation of the moving frame 52, that is, the backward moving operation, the entire working time can be shortened as compared with the first embodiment. There is an advantage that.

In the two embodiments described above, after the first and second spiral winding steps, the third, fourth or more spiral winding steps in which the same operation is repeated may be further performed. Of course. As described above, when the spiral winding process is performed a plurality of times, in terms of a circuit, a plurality of resistance wires 13 are connected in parallel between the two terminal caps 11a and 11b. Therefore, the overall resistance value of the finished resistor is reduced as compared with the case of spiral winding only once. Therefore, without using a thick resistance wire,
A resistor having a low resistance value can be freely manufactured. Therefore, the problem of peeling of welding due to the rigidity of the resistance wire can be solved.

In addition, since the winding method of each embodiment uses the above-described resistance wire automatic winding machine, the manufacturing efficiency is improved as compared with the conventional manual method, and variations in finished products are reduced. is there.

[0117]

As explained above, according to the resistance wire automatic winding method of the present invention, the manufacturing efficiency of the resistor can be improved and the problem of the peeling of welding due to the rigidity of the resistance wire can be solved. it can.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an automatic resistance wire winding machine used for carrying out the resistance wire automatic winding method of the present embodiment.

FIG. 2 is a partial cross-sectional view for explaining an element body holding structure by an element body holding portion of the resistance wire automatic winding machine of FIG.

FIG. 3 is a plan sectional view for explaining a configuration of an entire body holding unit of the automatic resistance wire winding machine of FIG.

FIG. 4 is a vertical sectional view of the welding means shown in FIG.

5 is a view for explaining the moving mechanism of the moving frame, and is a schematic perspective view of the resistance wire winding machine of FIG. 1 seen from the rear side.

FIG. 6 is a perspective view of the resistance wire supply unit shown in FIG. 1 viewed from the rear side.

FIG. 7 is a schematic explanatory diagram of a control system of the automatic resistance wire winding machine of FIG. 1.

FIG. 8 is a perspective view illustrating a riding operation of a resistance wire.

FIG. 9 is a perspective schematic view of a wound resistor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 resistor 10 element body 11a terminal cap 11b terminal cap 13 resistance wire 2 element body holding part 3 element body rotating means 4 resistance wire supply section 5 spiral winding means 6 welding means

Claims (2)

[Claims] 1. An element body holding part for holding an element body made of a columnar insulating material having a pair of terminal caps attached to both ends thereof,
Element body rotating means for rotating the element body around the center line of the element body, a resistance wire supply unit for supplying the resistance wire to the element body so that the resistance wire is wound around the rotating element body, and the element body Alternatively, a spiral winding means for moving one of the resistance wire supply units in the length direction of the element body to spirally wind the resistance wire around the element body, and the resistance wire supplied by the resistance wire supply unit. Using a resistance wire automatic winding machine equipped with welding means for welding the front end of the wire and the rear end of the wound resistance wire to each of the pair of terminal caps, the resistance wire is automatically attached to the element body. A method for automatically winding a resistance wire for winding, comprising: a first operation of welding the end of the resistance wire to one terminal cap by the welding means; and, after the first operation, an element body by the element body rotation means. While rotating, the element body or the resistance wire supply part is made to phase by the spiral winding means. Second movement in which the resistance wire is spirally wound around the peripheral surface of the element body by a linear movement, and after this second operation, the resistance wire is positioned on the other terminal cap and welded by the above-mentioned welding means. After the first spiral winding step, which comprises a third operation of separating the resistance wire of the above from the welding point, and after the first spiral winding step, the tip of the remaining resistance wire or the element body is moved in the length direction of the element body. Thus, the reset step of positioning the tip of the remaining resistance wire at a predetermined position on the peripheral surface of the one terminal cap different from the welding position in the first spiral winding step, and the reset step. And a second spiral winding step in which the steps up to the first operation and the third operation are repeated again. 2. An element body holding portion for holding an element body made of a columnar insulator having a pair of terminal caps attached to both ends thereof,
Element body rotating means for rotating about the center line of the element body, a resistance wire supply unit for supplying a resistance wire to the element body so that the resistance wire is wound around the rotating element body, the element body or the resistor A spiral winding means for moving one of the wire supplying portions relatively in the length direction of the element body to spirally wind the resistance wire around the element body, and the resistance wire supplied by the resistance wire supplying portion. Using a resistance wire automatic winding machine equipped with welding means for welding the front end of the wire and the rear end of the wound resistance wire to each of the pair of terminal caps, the resistance wire is automatically attached to the element body. A method for automatically winding a resistance wire for winding, wherein the tip of the resistance wire is welded to one terminal cap by the welding means.
After the operation and the first operation, the element body rotating means rotates the element body, and the spiral winding means linearly moves the element body or the resistance wire supply portion to spirally form the resistance wire on the peripheral surface of the element body. A first spiral consisting of a second operation of winding and a third operation of locating the resistance wire on the other terminal cap and welding it by welding means after the second operation, and separating the remaining resistance wire from the welding location. After the winding step and the first spiral winding step, a reset for positioning the tip of the remaining resistance wire on a peripheral surface of the other terminal cap at a predetermined position different from the welding position in the third operation. Step and, after the reset step, a fourth operation of welding the tip of the resistance wire to the position by the welding means, and, after the fourth operation, rotating the element body by the element body rotating means and screwing the element body. A fifth operation in which the element body or the resistance wire supply unit is linearly moved in a direction opposite to the second operation by the winding means to spirally wind the resistance wire around the peripheral surface of the element body, and after the fifth operation, A second spiral winding consisting of a sixth operation in which the tip of the resistance wire is positioned on a peripheral surface of the one terminal cap at a predetermined position different from the welding position in the first operation and the welding is performed by the welding means. A method for automatically winding a resistance wire, comprising: