JPH0452061B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a wire winding device, and particularly to a coil winding device suitable for winding a non-circular coil using a superconducting material as a wire.

[Background of the invention]

FIGS. 1A to 1D show a conventional wire winding method in which a superconducting conductor, which is a wire rod, is wound into a pancake shape around an elliptical winding core to form a coil. First, as shown in FIG. 1A, a crescent-shaped mold 4 is placed on the outer periphery of the coil 3A wound around the winding core 2, and the winding core 2 is rotated as shown in FIG. 1B. The wire rod 3 is bent, and then the core 2 is rotated in the opposite direction as shown in FIG. 1C to remove the mold 4, and then the core 2 is rotated again as shown in FIG. 1D. The wire rod 3 was wound up, and a coil was formed by repeating this series of operations.

Further, a fixing fitting 6 equipped with a tightening bolt 5 is attached to the side plate 7, and by tightening the tightening bolt 5, the outer periphery of the coil is pressed to prevent the coil 3A wound around the winding core 2 from unwinding. .

Therefore, in order not to interfere with the winding of the wire 3, the fixing metal fitting 6 near the winding position of the wire 3 is
After removing A and 6B, install a new fixing metal fitting 6 to tighten the outer circumference of the newly wound coil.
It was necessary to install C and 6D.

In addition, the code 8 increases the frictional force and the coil 3.
A is a pad provided at the tip of the bolt 5 to prevent damage to the outer surface.

However, this conventional wire winding method requires a large number of molds 4 corresponding to the required curvature, and requires a large number of man-hours to replace these molds 4 and attach and remove the fixing fittings 6, resulting in poor work efficiency. There was a problem. Furthermore, in this conventional method, a gap often occurs between the previous coil that has already been wound and the coil layer wound above it at the point where the radius of curvature changes, but in order to correct this gap, it is necessary to This process had to rely on manual labor such as hammering, which is based on skill and intuition over many years, and there was also the problem that the effects of work errors and impacts from hammering on the superconducting conductor could not be ignored.

[Purpose of the invention]

An object of the present invention is to provide a coil winding device that can continuously wind a non-circular coil having partially different radii of curvature.

[Summary of the invention]

In order to achieve the above object, the coil winding device of the present invention protrudes and attaches a winding core that winds the wire unwound from the unwinding drum in multiple stages in the radial direction to form a coil, and forms the coil while rotating. a winding drum; two rolls that are pivoted to both ends of an arm provided along the outer periphery of the coil at the wire winding position of the winding core, each abutting the outer surface of the wire, and one of the two rolls; It is pivotally connected to the end of the arm on the roll side on the upstream side of the unwound wire rod,
A copying roll that contacts the coil, a moving roll that contacts the inner surface of the wire between the two rolls and is movable in the radial direction of the coil, a pressing cylinder that presses the arm in the direction of the coil, and a moving roll. It consists of a wire bending device that drives in the opposite direction to the coil and is installed adjacent to the winding drum; and a wire bending device that is placed between two rolls of the wire bending device and that drives the outer periphery of the wound coil. two other copying rolls that are in contact with the wire rod and are kept at a constant distance from each other, and the wire that is placed between the two copying rolls and in contact with the moving roll of the wire bending device is coiled. a curvature detection device comprising a detection roll that contacts the outer periphery of a coil that has already been wound at a position where it is wound and is displaceable in the radial direction with respect to two copying rolls; a detection roll of the curvature detection device; a bending control device that controls the drive device by converting the amount of displacement of the wire rod into the amount of movement of the moving roll of the wire bending device; a clamping device having a plurality of clamp cylinders provided so as to be able to enter and exit from the end surface of the winding drum through an opening formed in the end surface by the link mechanism; connected to each of the link mechanisms of the clamp cylinders of the clamp device; Each mechanism is synchronized with the opening and closing of a switch that operates according to the rotational position of a dog provided on the winding drum, and in the vicinity of the bending device, a clamp cylinder is retracted from the end face of the winding drum.
In areas other than the wire bending device, the device includes a control mechanism that controls an elevating cylinder that projects a clamp cylinder from a winding drum and clamps the outer periphery of the coil.

In the coil winding device configured as above,
The bending control device controls the drive device to move the moving roll of the wire bending device according to the amount of displacement of the detection roll of the curvature detection device, and the wire bending device controls the wire rod being pressed by the pressing cylinder. The detection roll is brought into contact by two rolls that are in contact with the outer surface of the wire, and a moving roll that is located between them and is in contact with the inner surface of the wire and is moved by a drive device according to the amount of displacement of the detection roll. The winding drum bends the wire with a curvature that matches the outer circumference of the already wound coil at the position where it is being wound.Meanwhile, the winding drum rotates and bends each part of the wire into a predetermined position on the wound coil. Because it is wound, each stage coil has a shape that matches each other, and furthermore,
The coil wound around the winding core is pressed and clamped by the clamp cylinder of the coil clamp device operated by the control mechanism, which prevents the coil from unwinding.The winding drum rotates and the clamp cylinder clamps the wire rod. When approaching the bending device, the control mechanism operates the lifting cylinder in synchronization with the opening and closing of a switch that operates according to the rotational position of the dog provided on the winding drum, and the link mechanism moves the clamp cylinder to the winding drum. Since the winding drum is drawn through the opening from the end face to avoid interference with the wire bending device, the winding drum can wind up the coil continuously.

[Embodiments of the invention]

Preferred embodiments of the coil winding device according to the present invention will be described below with reference to the drawings.

FIG. 2 is a plan view of an embodiment of the coil winding device according to the present invention, in which the coil wire device 10 is arranged with its axis of rotation perpendicular, and has a feeding drum that feeds out the wire 3 while applying a constant tension to the wire 3. (not shown)
and a winding drum 12 which is arranged with its rotating shaft vertically like this feeding drum and winds up the wire rod 3 that is fed out from the feeding drum, and a winding drum 1.
A bending device 20 that is provided near the wire winding position of No. 2 and bends the wire rod 3 before the wire rod 3 is wound onto the winding drum 12;
and a coil clamp device 100 that presses the coil 3A wound up into two.

An elliptical winding core 16 is protruded from the center of the end surface 12a of the winding drum 12 through a side plate 14 that functions as a coil winding guide, and the winding drum 12 and the winding core 16 are integrally formed. The wire rod 3 is rotated to be wound around the winding core 16 as a coil 3A.

The bending device 20 is arranged on a base 22 formed near a position where the wire rod 3 is wound around the winding core 16 . Two rails 24 extending toward the wire winding position are extended on the base 22, and a table 26 is placed on these rails 24, and this table 26 is connected to a drive motor 28 installed on the base 22 and a ball screw. 30, it is movable on the rail 24 in the direction of approaching and separating from the outer periphery of the coil 3A as shown by arrow A, and the coil 3
A and the drum 12 can be easily removed.

On the other hand, two rails 31 extending perpendicularly to the rails 24 are provided on the table 26, and a U-shaped outer peripheral frame 32 that opens toward the wire winding position is placed on the rails 31. The outer peripheral frame 32 is movable on the rails 31.

A rail 34 is provided on the opposing inner side of the outer frame 32, a moving frame 36 is attached to the rail 34 so as to be movable along the rail 34, and the moving frame 36 is provided between the outer frame 32 and the moving frame 36. The installed linear cylinder 38 is biased with a predetermined pressure in the wire winding direction (direction of arrow B).

As shown in FIG. 3, the moving frame 36 is also formed in a substantially U-shape like the outer peripheral frame 32, and a coil is attached to the tip of one arm 36A of the two arms extending toward the wire winding part. A linear copying roll 40 that comes into contact with the outer peripheral surface is pivotally mounted. Further, a pivot arm 44 is provided on the pivot shaft 42 of the linear copying roll 40.
The swing arm 4 is rotated around the pivot shaft 42 by a swing cylinder 46 installed between the moving frame 36 and the swing arm 4 .
4 can be swung in the direction of arrow C.

Rails 48 are provided on both the front and rear sides of the swing arm 44.
50, and a rotating copying roll 54 and a fixed bending roll 56 are each pivotally attached to the distal end of the rotating arm 44 via a bracket 52 that is movable along a rail 48. The rotating arm 44 is urged in the direction of the coil by the rotating cylinder 46, and the rotating copying roll 54 contacts the outer surface of the coil with a predetermined pressing force and moves to follow the outer surface of the coil. . Note that the fixed bending roll 56 presses the outer surface of the wire rod 3 wound up by the winding core 16, and works together with a moving bending roll 58, which will be described later, to apply a bending moment to the wire rod 3 to perform the bending process. ing.

Further, a curvature detecting section 60, which will be described later, is installed approximately at the center of the swing arm 44, while the curvature detecting section 6
A frame 57 is attached to the side of the arm 44 opposite to the side on which the wire 3 is attached, and a moving bending roll that comes into contact with the inner peripheral surface of the wire 3 and presses the wire 3 outward is attached to the frame 57. 58 are provided. This moving bending roll 58 is driven by a drive motor 58A.
The rail 5 is driven by a ball screw 59 driven by
It is movable in the direction of arrow D along 9A.

FIG. 4 is a diagram showing the curvature detection section 60 installed on the swing arm 44 described in FIG. 3.

A movable table 64 is attached to the L-shaped frame 62 so as to be movable back and forth in the direction of arrow E. At the tip of the movable table 64, a rotating arm 70 is provided with a copying roll 68 at both ends via a shaft 66. The pivot arm 70 is pivoted by a pivot shaft 71, and the pivot arm 70 is swingable in the direction of arrow F.

An arm 72 is attached to the rotating arm 70 so as to be movable in a direction perpendicular to a straight line connecting both copying rolls 68, and a detection roll 76 is provided at the tip of the arm 72 via a shaft 74. The detection roll 76 is located between both copying rolls 68, and the arm 72 is urged by a spring member 78 in the direction of the coil 3A. A linear sensor 79 is installed on the lower surface of the swing arm 70, and the relative position of the arm 72 and the linear sensor 79 is initially held at a constant position by a spring member 78.
The detection roll 76 is pushed by the outer circumferential surface of the coil and the arrow G
direction, and the amount of this movement can be detected by a linear sensor 79.

The frame 62 is assembled to a rail 48 provided on a swing arm 44 so as to be movable in the rail longitudinal direction, a column 80 is provided protruding from the moving table 64, and pulleys 82A, 82B,
82C is installed, and a wire 84 from the column 80 is connected to a balance weight 86 via pulleys 82A, 82B, and 82C. Therefore, the moving table 64 is always biased in the direction of arrow E, and both copying rolls 68 and detection roll 7
6 is in contact with the outer periphery of the coil, and a linear sensor 79 detects the relative displacement of the detection roll 76 with respect to the copying roll 68.
The bending roll position control device 90, which will be described later, is configured to detect the bending roll position and input it to a bending roll position control device 90, which will be described later.

FIG. 5 is a block diagram of a bending roll position control device 90.

In FIG. 5, a bending roll position control device 90 uses a minicomputer 92 into which position data of the movable bending roll 58 with respect to various curvature values is input in advance, and a bending roll position data according to detected values by a linear sensor 79. A microcomputer 94 selects data from among the data input to the minicomputer 92, and a signal from the microcomputer 94 drives the drive motor 58A.
and a drive control section 96 that drives the movable bending roll 58 to a predetermined position.

The curvature of the coil surface changes moment by moment as the winding of the wire 3 progresses, but the position of the movable bending roll 58 is also changed by the bending roll control device 90, so that the wire 3 is always adjusted to match the outer circumferential curvature of the preceding coil.
It is now possible to perform bending work on.

Note that the reference numeral 98 indicates the bending roll position control device 90.
This is the operation panel that controls the driving and stopping of the motor.

FIGS. 2 and 6 (a cross-sectional view of FIG. 2) are views showing the coil clamp device 100.

In these figures, the clamp cylinders 102 (102A, 102B, 102C, . . . 102 shown in FIG.
H) is arranged to protrude upward from an opening 103 formed in the end surface 12a of the winding drum 12, and a cylinder rod 10 is provided with a pad 104 at its tip.
6 presses against the outer surface of the coil.

Frame 1 that fixes the clamp cylinder 102
07 is a base 10 fixed to the bottom plate of the winding drum.
The connecting shaft 114 of the links 113A and 113B that are connected to the base 1 through the links 110 and 112 and connects the link 112 and the winding drum outer plate.
Lifting cylinders 115, 115A, 115B, 115C, . . . 1 that are swingably arranged between the
15H allows the clamp cylinder 102 to move up and down.

FIG. 7 shows a clamp cylinder operation control mechanism 100A of the coil clamp device 100.

This control mechanism 100A includes a dock 118 that is pivotally attached to a winding shaft 116 that extends downward from the winding core 16.
And eight limit switches 120, 120A, 120B, placed around the outside of this dock 118.
It is composed of 120C,...120H,
Limit switch 120A is clamp cylinder 1
02A and the lifting cylinder 115A, the limit switch 120B operates the clamp cylinder 102B and the lifting cylinder 115B, and the limit switch 120H is connected via a slip ring 122 to operate the clamp cylinder 102H and the lifting cylinder 115H, respectively.

A slider 124 protrudes from the limit switch 120 toward the dock, and a roller 126 is pivotally attached to the tip of the slider 124.
It is in a state of being in contact with the outer peripheral surface of 18. A convex portion 118A and a concave portion 118B are formed in the dot 118. The dot 118 rotates together with the winding drum 12, and the roller 126 moves along the outer circumferential surface of the dot 118 to prevent the slider 124 from sliding. The limit switch 120 is turned on and off depending on the movement.

For example, from the state shown in FIG.
When the dock 118 rotates 45 degrees (at this time, the dock 118 also rotates 45 degrees), the limit switch 120H turns on and operates the lifting cylinder 115H and the clamp cylinder 102H.
H is made to protrude upward from the side surface of the winding drum 12, and the outer periphery of the coil 3A is clamped. At the same time, the limit switch 120D is turned off to reversely operate the lifting cylinder 115D and the clamp cylinder 102D, retracting the cylinder rod of the clamp cylinder 102D, and lowering the clamp cylinder 102D into the take-up drum 12.

As the dock 118 rotates in this manner, the slider 124 of the limit switch 120 moves from the dock 118.
The clamp cylinder 102 moves to follow the shape of the outer periphery, and when it comes to a position near the winding part of the wire 3 (in other words, the location where the bending device 20 is placed), it releases the clamp on the outer periphery of the coil 3A. , are adapted to descend into the winding drum 12. Therefore, the clamp device 100 does not get in the way of winding up the wire.

Next, the operation of this embodiment will be explained.

First, the tip of the wire 3 is fixed to the winding core 16.

Next, depending on the size of the coil, the bending device 20
into position. That is, the drive motor 28
The table 26 is positioned, and then the outer peripheral frame 32 is attached to a predetermined position on the rail 31, and the positions of the linear copying roll 40, bracket 52, curvature detection section 60, and movable bending roll 58 are determined. (See FIG. 2) Then, the winding drum 12 is driven to start winding the wire 3.

Then, as shown in FIG. 5, the wire 3 is bent by being given a bending moment between the fixed bending roll 56 and the movable bending roll 58. and,
The wire 3 is bent back between the movable bending roll 58 and the copying roll 40 within an allowable springback range, and then wound onto the winding core 16.

At this time, the position of the movable bending roll 58 is controlled as follows.

That is, as shown in FIG.
The linear sensor 79 detects the amount of movement of the detection roll 76, and this detected value is sent to the bending roll position control device 9.
0 (see FIG. 5), the optimum movable bending roll position is determined, and the drive control section 96 drives the drive motor 58A to move the movable bending roll 58 to the optimum position.

As shown in FIG. 3, the movable frame 36 of this bending device 20 is always biased by a cylinder 38 and the swing arm 44 by a cylinder 46 in the direction of the coil 3A with a constant biasing force. Due to the rotation of the winding core 16, the linear copying roll 40, the rotating copying roll 54, and the copying roll 68 (see Fig. 4) of the curvature detection unit 60 move to follow the outer circumference of the coil, and as the wire winding progresses, The changing outer circumferential curvature of the coil is detected by the curvature detection section 6.
0, and the position of the movable bending roll 58 is controlled by a bending roll position control device 90 shown in FIG. A bending process will be applied to the curvature.

The coil 3A wound around the winding core 16 is automatically and sequentially clamped in the radial direction by the clamp cylinder 102 of the coil clamp device 100.

Therefore, the coil 3 wound around the winding core 16
There is no gap between the layers of A, and the winding of the coil 3A is reliably prevented.

As described above, according to this embodiment, non-circular coils having various curvatures can be formed in a short time without creating gaps between coil layers.

Further, since no gap occurs between the coil layers, hammering is not necessary, and there is no possibility of adversely affecting the performance of the coil.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, winding coils having various curvatures, whether circular or non-circular, can be formed in a short time without creating gaps between coil layers.

[Brief explanation of drawings]

1A to 1D are state diagrams of coil winding by a conventional coil winding device, FIG. 2 is a plan view of essential parts of an embodiment of the coil winding device according to the present invention, and FIG. 3 is a bending diagram of the coil winding device. An enlarged plan view of the processing device, FIG. 4 is a perspective view of its curvature detection unit, FIG. 5 is a block diagram showing the control system of the bending roll position control device in the bending device, and FIG. 6 is the coil clamp device. FIG. 7 is a schematic diagram showing the operating system of the coil clamp device. 3... Wire rod, 3A... Coil, 12... Winding drum, 12a... End face, 16... Winding core, 20...
Bending device, 22...Base, 32...Outer frame, 36...Moving frame, 40...Linear copying roll, 44...Swivel arm, 54...Fixed copying roll, 56...Fixed bending roll, 58... ...Moving bending roll, 60...Curvature detection unit, 62...Frame, 64...Moving table, 68...Copying roll, 70...Swivel arm, 76...Detection roll, 79...Linear sensor, 90... Bending roll position control device, 92...Mini computer, 94
... Microcomputer, 96 ... Drive control section, 100 ... Coil clamp device, 102 ...
Clamp cylinder, 107...Cylinder rod,
115... Lifting cylinder, 116... Winding shaft, 1
18...Dock, 120...Limit switch,
122...Slip spring.

Claims (1)

[Scope of Claims] 1. A winding drum for forming a coil by protrudingly attaching a winding core for winding the wire unwound from the unwinding drum in multiple stages in the radial direction to form a coil, and for forming the coil while rotating; two rolls that are pivotally connected to both ends of an arm provided along the outer periphery of the coil at the wire winding position, each abutting the outer surface of the wire; a copying roll that is pivotally attached to the end of the arm on a certain roll side and comes into contact with the coil; a moving roll that comes into contact with the inner surface of the wire between the two rolls and is movable in the radial direction of the coil; a wire bending device that is installed adjacent to the winding drum and that includes a pressing cylinder that presses the arm in the direction of the coil; and a drive device that drives the moving roll in the opposite direction to the coil; two other copying rolls arranged between the two rolls of the device, in contact with the outer periphery of the wound coil, and having a constant interval therebetween; , the wire at the position in contact with the moving roll of the wire bending device contacts the outer periphery of the already wound coil at the position where it is wound into a coil, and the wire rod at the position where it is in contact with the moving roll of the wire bending device contacts the outer periphery of the already wound coil, a curvature detection device comprising a detection roll that can be displaced in a direction; and a bending control device that converts a displacement amount of the detection roll of the curvature detection device into a movement amount of a moving roll of the wire bending device to control the drive device. and a plurality of winding drums that surround the winding core of the winding drum and are provided on the winding drum via a link mechanism, and that can be moved in and out from an end surface of the winding drum through an opening formed in the end surface by the link mechanism. a clamping device having a clamp cylinder; and a clamping device connected to each of the link mechanisms of the clamp cylinders of the clamping device, each of which is synchronized with the opening and closing of a switch that operates according to the rotational position of a dog provided on the winding drum. and a control mechanism for controlling an elevating cylinder that retracts a clamp cylinder from the end face of the winding drum in the vicinity of the bending device, and protrudes from the winding drum to clamp the outer periphery of the coil in an area other than the wire bending device. A coil winding device consisting of.