JPH01199406A - Coil - Google Patents

Abstract

PURPOSE:To obtain the coil which can be simply manufactured in a short time by a method wherein a heater, to be used to dry an insulating bonding material by heating, is provided on a spool. CONSTITUTION:A coil 11, constituted by winding a conducting wire 3 which is covered by the insulating material on which a thermosetting insulating bonding agent is coated and impregnated, is provided on a spool 7, and a heater 10, with which said insulating bonding agent will be dried by heating, is provided. For example, a heater 10 is buried in the spool part 8 and the flange part 9 of the spool 7. When the superconducting coil 11 is manufactured, the spool 7 is attached to a winding machine 6, and it is rotated, and at the same time, a current is applied to the heater 10, and heat is generated at the prescribed temperature. Then, the superconducting wire 3 is wound around the spool 7 while an insulating material is being wound on the superconducting wire 3. At that time, the superconducting wire 3 is heated up successively by the heater 10 from the part wound on the spool 7, and the varnish in a semihardened state on the insulating material of the heated part is dried up by heat and hardened successively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a coil in which conducting wires are insulated by an insulator impregnated or coated with an insulating adhesive.

[Prior Art] Fig. 2 is a perspective view showing a state in which a superconducting coil is being heated and dried as an example of a conventional coil. Placed reel frame, (3
) is a superconducting wire that is a conducting wire wound around a winding frame (2), (4
) is a superconducting coil in the process of being manufactured, which has a winding frame (2) and a superconducting wire (3).

FIG. 3 is a perspective view showing the superconducting wire (3) in FIG.
In the figure, (5) is an insulator wrapped around the superconducting wire (3) to insulate the superconducting wire (3).
5) is impregnated with a semi-cured face (not shown) as a thermosetting insulating adhesive.

When manufacturing the conventional superconducting coil (4) configured as described above, the winding frame (2) is first attached to a winding machine (not shown) and rotated. Next, the insulator (
5) around the superconducting wire (3), wrap the insulated superconducting wire (3) around the winding frame (2). Once the superconducting wire (3) has been wrapped around the winding frame (2) to a certain extent, the winding frame (2) is removed from the winding machine and placed in the drying oven (1),
Heat and dry the face of the insulator (5) at a predetermined temperature (
For example, see Sangyo Tosho Publishing First Edition R Electrical Insulating Paint, p. 1193). Once the face has hardened, attach the winding frame (2) to the winding machine again and wrap the superconducting wire (3) around the winding frame (2). . In this way, the superconducting coil (4) is manufactured by alternately performing winding and heating drying.

[Problem to be solved by the invention] In the conventional superconducting coil (4) configured as described above, a drying oven (1) is used to heat and dry the face of the insulator (5) to harden it. Therefore, the superconducting coil (4) that is in the middle of being manufactured has to be reset in the drying oven (1) and the winding am many times, which poses a problem in that manufacturing takes time and effort.

This invention was made to solve the above-mentioned problems, and aims to obtain a coil that can be easily manufactured in a short period of time.

[Means for Solving the Problems] A coil according to the present invention has a winding frame provided with a heater for heating and drying an insulating adhesive.

[Function] In the present invention, when the conductive wire is wound around the winding frame, the insulating adhesive material of the insulator is successively heated and dried by the heater.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a superconducting coil in the process of being manufactured, showing an embodiment of the present invention, and the same or corresponding parts as in FIGS. 2 and 3 are given the same reference numerals, and the explanation thereof will be omitted.

In the figure, (6) is a winding machine, (7) is a winding frame attached to the winding machine (6), and this winding frame (7) has a cylindrical winding shaft (8) and this winding shaft. It consists of a flange part (9) formed at both ends of a part (8). (10) is a heater embedded in each of the winding shaft part (8) and flange part (9), and (11) is a superconducting coil in the process of being manufactured, which has a winding frame (7) and a superconducting wire (3). 6 When manufacturing the superconducting coil (1) configured as described above, first the winding frame (7) is placed on the winding machine (6).
) is attached and rotated, and the heater (10) is energized to generate heat at a predetermined temperature.

Next, as in the conventional example, an insulator (5) is placed on the superconducting wire (3).
While winding the superconducting wire (3), the superconducting wire (3) is wound around the winding frame (7). At this time, the superconducting wire (3) is sequentially heated to a predetermined temperature by the heater (10) starting from the portion wound around the winding frame (7). As a result, the semi-hardened face of the insulator (5) in the heated portion is successively heated and dried and hardened, and the superconducting coil (11) is manufactured.

In the above embodiment, a tape-shaped insulator (5) is shown, but a sheet-shaped insulator inserted between each turn (layer) may also be used.

In addition, in the above embodiment, a superconducting coil (11
), but a normally conducting coil may also be used and the same effects as in the above embodiments can be achieved.

[Effects of the Invention] As explained above, in the coil of the present invention, since the heater is provided in the winding frame, when the conducting wire is wound around the winding frame, the face of the insulator is sequentially heated and dried by the heater. is,
This eliminates the need for the conventional drying oven, eliminates the need to transport the coil in the middle of production back and forth between the drying oven and the winding machine several times, and has the effect of simplifying production in just a few hours.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a superconducting coil in the process of manufacturing, showing an embodiment of the present invention. FIG. 2 is a configuration diagram showing a state of a superconducting coil being heated and dried as an example of a conventional coil. FIG. 2 is a perspective view showing the superconducting wire shown in the figure. In the figure, (3) is a superconducting wire, (5) is an insulator, and (7) is a superconducting wire.
) is a winding frame, (10) is a heater, and (11) is a superconducting coil. In each figure, the same reference numerals indicate the same or corresponding parts. 11: Running β electric coil

Claims (1)

[Claims] A coil in which a conductor wire covered with an insulator impregnated and coated with a heat-curable insulating adhesive is wound around a winding frame.
A coil characterized in that the coil is provided with a heater that is provided on the winding frame and heats and dries the insulating adhesive material.