JPH0256379A - Supply device for fine round super conductive wire - Google Patents

Abstract

PURPOSE:To facilitate the production of an aligned coil by detecting the dip quantity of the fine round super conductive wire supplied through a guide roller and movable guide roller and performing on-off control of a motor with brake. CONSTITUTION:The dip quantity of a super conductive wire 12 is absorbed by the vertical movement of a movable guide roller 15, and the tension thereof is kept constant, and a wire drum 11 is rotatively driven in the direction in which an aligned coiled super conductive wire is unwound, and as a result, the super conductive wire 12 can be supplied without receiving torsional stress. For this reason, a super conductive coil can be aligningly coiled without exerting a harmful effect on the fine super conductive wire binding state of the core wire of the super conductive wire 12. If the take-up speed of the wire compares considerably reductively with the supply speed, the position of the movable guide roller 15 is lowered to actuate a limit switch 17, which stops a motor 16 with brake. The dip of the super conductive wire 12 and a tangle along with the dip can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for feeding out magnet wire such as a thin round superconducting wire used for winding a superconducting coil.

[Conventional technology]

Figure 2 is a side view showing a conventional device. It is a thin round shape made by baking an insulating film such as a vinyl formal film or a polyester film onto a copper wire (or aluminum wire) with a diameter of 1 or less, such as formal copper wire or polyester copper wire. This is shown as an example of a feeding device '1 used for winding work of magnet wire. In the figure, an electric wire drum 1 on which thin round magnet wires 2 are wound in an aligned manner is fixed on a base 9 with one brim lAt- below, and a fulcrum 6 is placed at the center of the electric wire drum 1.
The unwinding device 6 is composed of a rotatable arm 4 having a rotatable arm 4 and a guide roller 5 attached to the tip of the arm 4 and guiding the thin round magnet wire 2 toward a winding device (not shown) having a tension adjuster. be done.

In the conventional unwinding device 3 configured as described above, the thin round magnet wire 2 pulled out above the wire drum 1 via the guide row 25 is wound into the magnet wire 2 when being wound into the winding device. The arm 4 rotates in the opposite direction to the winding direction of the magnet wire 2 around the electric wire drum 1 due to the applied tension, and sequentially unwinds the magnet wire 2 that has been wound in alignment around the electric wire drum 1 one turn at a time.
The magnet wire 2 can be fed out while being fixed on the electric wire drum 1t-base 1.

[Problem to be solved by the invention]

In the conventional device, the wire drum 1 fixed to the base 9
1 by the arm 4 rotating the magnet wire 2 wound around the ! The loop expands into a loop with a diameter larger than the radius of the flange 1A of the wire drum and is pulled out in the shape of a cell. When tension is applied to the magnet wire 2 by the tension adjustment machine of the winding device, the magnet wire drawn out in the shape of a cell becomes a straight line. When the magnet wire is stretched, screw stress acts on the magnet wire.

If the screw deformation of the magnet wire due to this torsional stress remains as an elastic force, when the magnet wire is wound in alignment around the winding frame of the winding device, gaps will remain between each turn or layer of adjacent magnet wire. A problem occurs in that it is difficult to obtain a coil wound in an aligned manner, and the mechanical strength and cooling performance of the obtained coil deteriorate. In addition, if a large tension is applied with a tension v4 straightening machine to eliminate elastic strain caused by screw tension, excessive elongation may occur in the conductor or insulating film, which may adversely affect current carrying performance and the insulation performance of the insulating film. There is sex.

On the other hand, when the magnet wire wound around the electric wire drum 1 is a thin round superconducting wire (hereinafter referred to as superconducting wire) with a diameter of 1 ms or less, the structure is such that a large number of thin superconducting wires are arranged at a loose pitch. A bundled core wire, a stabilizing material layer such as copper or aluminum covering the core wire,
This stabilizer layer is composed of an insulating film baked on a different surface, so when the civilian superconducting wire is twisted, the binding state of the superconducting thin wire changes, and sometimes unexpected stress is applied to the superconducting thin wire, causing it to partially break. Unforeseen situations such as this occur.

An object of the present invention is to facilitate the production of aligned winding coils without applying unnecessary stress such as kinking to the superconducting wire.

[Means to solve the problem]

In order to solve all of the above problems, according to the present invention, in an apparatus for feeding out thin round superconducting wires wound on an IT electric wire drum toward a winding device having a tension adjuster, the wire drum is rotatably supported on a pedestal. a motor with a brake that rotationally drives the electric wire drum, a guide roller supported by the upper end of a column whose lower end is fixed to the pedestal, and a movable guide roller guided by the column in a vertically movable manner; a limit switch that controls on/off the motor with a brake by detecting the amount of slack in the thin round superconducting wire that is fed out toward the winding device via the guide roller and the movable guide roller, based on the position of the movable guide roller; It shall be equipped with the following.

[Effect]

In the above means, the X@drum on which the superconducting wire is wound in an aligned manner is driven to rotate by a motor with a brake, and the superconducting wire is directed to the winding device via a guide roller fixed to a support and a movable guide roller guided by the support. By configuring the structure so that the superconducting wire is fed out at a predetermined speed, the superconducting wire is fed out toward the winding device without being twisted, and the winding speed on the winding device side and tlf! The difference between the feeding speed on the A drum side is absorbed by the vertical movement of the movable guide roller and eliminates slack and excessive tension in the superconducting wire, so the superconducting coil can be moved without giving unnecessary mechanical stress to the superconducting fine wire. '
It becomes possible to wind the lines in an aligned manner. Additionally, the lower limit position of the movable guide roller is detected and the motor with brake is turned on.
It is equipped with a limit switch to control off, and it is possible to pay out an amount of superconducting wire according to the amount of superconducting wire wound on the winding device side, and the tension is stabilized by the vertical movement of the movable guide roller. It is possible to perform winding work while maintaining stable tension as well as oxidation.

〔Example〕

The present invention will be explained below based on examples.

FIG. 1 is a side view showing an embodiment of the present invention. In the figure, the thin round superconductor W! tS when AI2 is wound in alignment
The drum 11 is rotatably supported by a pedestal 19, and is driven to rotate at a desired rotational speed by a playback motor 19. A guide roller 16 is attached to the upper end of the column 14 on the pedestal 19, and a movable guide row 215 is attached so as to be movable up and down along the column, and the superconducting wire 12 is connected to the fixed side guide roller 213. The wire is fed out through the movable guide row 215 toward a winding device (not shown). In addition, 17 is the frame 1
When the movable guide roller 15 is lowered to the lower limit position, the limit switch fixed on the 9 side detects this and turns the contact 17A on and off, and the power is supplied from the power supply 20 to the motor 16 with a brake. At the same time, the rotation of the motor with a brake stops and the feeding of the superconducting wire is stopped.

In the embodiment apparatus configured as described above, the tension applied to the superconducting wire 12 being unwound is determined by the weight of the movable guide row 215 slidably guided by the support column 14, and is determined by the winding speed of the winding device. The slack in the superconducting wire 12 due to the difference in the payout speed on the wire drum side is absorbed by the vertical movement of the movable guide row 215, and the tension is kept constant, and the 11-wire drum 11 winds the superconducting wire 12 wound in an aligned manner. Since the superconducting wire 12 can be unwound without applying any screw stress to the superconducting wire 12 by being rotationally driven in the return direction, the superconducting coil can be unwound without adversely affecting the binding state of the superconducting fine wire, which is the core wire of the superconducting wire. Can be wound in line.

Furthermore, when the winding speed becomes slower than the unwinding speed, the position of the movable guide roller 15 is lowered and the limit switch 17 is operated, so that the motor 16 with a brake immediately stops rotating. Stop. Therefore, sagging of the superconducting wire and accompanying entanglement of the superconducting wire can be avoided. Furthermore, when winding starts in this state, the position of the movable guide roller 15 rises, and the limit switch 17
When the superconducting wire 12 is turned on, the feeding of the superconducting wire 12 is immediately resumed.

In addition, if a limit switch is also provided on the upper limit position side of the movable guide roller to control on/off of the winding device, excessive damage to the superconducting wire may occur due to the winding speed being faster than the unwinding speed. It is also possible to prevent tension from being applied.

〔Effect of the invention〕

As described above, this invention rotates a wire drum using a motor with a brake, and winds the unwound magnet wire such as superconducting wire through a movable guide roller that is vertically movably guided by guide rollers and supports. In addition to supplying it to the device, the motor with a brake is controlled on/off by a limit switch that detects the position of the movable guide roller. As a result, twisting of the wires is avoided by rotating the wire drum, making it easier to wind the coils in alignment, and also eliminating any negative effects on the binding state of the superconducting thin wires. In addition, the difference between the wire unwinding speed and the winding speed of the winding device is absorbed by the vertical movement of the movable guide roller, and if there is an excessive speed difference, a limit switch is used to control the motor with a brake on and off. This makes it possible to perform winding work while always maintaining a stable tension determined mainly by the weight of the movable guide roller. Therefore, it is possible to provide an apparatus for feeding out a thin round superconducting wire, which can easily obtain a superconducting coil or the like wound in an aligned manner without deterioration of current carrying performance and insulation performance caused by the application of unnecessary stress.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a side view showing a conventional device. 1.11... Electric wire drum, 2... Magnet wire, 12... Thin round superconducting wire, 6... Feeding device (conventional method), 16... Guide roller, 14... Support, 1
5... Movable guide roller, 16... Motor with brake, 17... Limit switch, 19... Frame, 20
···power supply.

Claims (1)

[Claims] 1) In a device that unwinds thin round superconducting wires that are aligned and wound around a wire drum toward a winding device that has a tension adjuster,
A motor with a brake that rotationally drives the electric wire drum rotatably supported on a pedestal, a guide roller supported on an upper end of a column whose lower end is fixed to the pedestal, and a guide roller movably up and down on the column. The movable guide roller and the amount of slack in the thin round superconducting wire that is fed out toward the winding device via the guide roller and the movable guide roller are detected based on the position of the movable guide roller, and the brake motor is activated. A feeding device for thin round superconducting wire, characterized in that it is equipped with a limit switch for controlling on/off.