JPS62283615A - Manufacture of coil - Google Patents

Abstract

PURPOSE:To prevent a winding from being disordered by so disposing a tape having a bonding surface at a bobbin as to pass the inner periphery of a coil, winding the tape from the inner periphery to the outer periphery of the coil, and then removing the coil from the bobbin fo rigidly secure the oil with the tape. CONSTITUTION:Recesses 54, 55 of length arriving at the outer periphery of a winding body 2 are formed at the opposed positions of the edges of flange plates 3, 4 of a bobbin 1. A bonding tape 50 is bridged over between the recesses 54 and 55. The bonding surface of the tape 60 is placed on the body 2 toward the outside. A winding is supplied while rotating the bobbin 1 to press the winding disposed at the lowermost layer of the coil to the tape 60 to be stably held without vibration of the winding due to the deformation of the tape 60, thereby winding the coil on the body 2. When arriving at predetermined number of turns, the rotation of the bobbin 1 is stopped, and the tape 60 is wound from the inner periphery to the outer periphery of the coil A. Since the roughly wound coil A thus removed is wound with the tape 60, the winding is not entangled nor disordered.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method of manufacturing a coil used in electromagnetic equipment and the like.

[Conventional technology]

When winding and forming a coil using a winding frame, there is no need to remove the coil from the winding frame if the winding frame and coil are integrated into a product, but when making a so-called plain-wound coil, the coil It is necessary to remove the coil from the winding frame after winding.

[Problem that the invention seeks to solve]

As mentioned above, when removing a coil from a winding frame, even if the coil is tightly wound, depending on how it is handled afterwards, the winding may be disturbed, such as part of the winding coming loose on the end face of the coil. may occur. In order to prevent such problems, it is sometimes done to fix the winding wire by wrapping tape or the like after taking the coil out of the winding frame, but with this method, when the coil is taken out from the winding frame, Alternatively, some of the windings may come loose before the tape is wound, resulting in the disadvantage that the tape cannot be wound firmly.

Another possible method is to harden the windings by applying a resin liquid or the like to the windings to bond them together when winding the coil.

However, in this case, not only will the equipment be left in the lurch, but
Handling of resin etc. is also troublesome.

[Means for solving problems]

A method for manufacturing a coil according to the present invention includes winding and forming a coil using a winding frame, and removing the coil from the winding frame after winding and forming the coil. Before removing the coil from the winding frame after winding or forming the coil, place a tape with an adhesive surface on the winding frame so as to pass along the inner circumference of the coil, and apply this adhesive tape to the inner circumference of the coil. The feature is that the coil is removed from the winding frame after being wound from the side to the outer circumference.

[Effect]

The winding frame used in the method of the present invention has recesses, for example, at mutually opposing edges of a pair of flange plates provided on the end face of the winding drum. When such a winding frame is used, the adhesive tape is passed between the recesses of the winding frame before winding of the coil, and then the coil is wound. After the coil is formed, the adhesive tape is wound from the inner circumference to the outer circumference of the coil, and then the coil is removed from the winding frame.

Alternatively, in the case where the winding drum of the winding frame is composed of a plurality of winding drum constituent pieces, the coil is wound and formed with these winding drum constituent pieces spread out, and then the coil is formed between the winding drum constituent pieces. Adhesive tape can be inserted into the gap. Therefore, in this case, it is also possible to insert a tongue tape into the gap, wrap the tape around the coil, and then remove the coil from the winding frame. By employing these means, the coil is firmly fixed with tape, and even if the coil is removed from the winding frame, such as an unwound coil, the winding can be prevented from unraveling.

〔Example〕

First, an example of a coil winding frame used in the method of the present invention will be described. The coil winding frame 1 shown in the drawing includes a winding drum 2 made of metal and both end surfaces 2a of the winding drum 2.

2b includes a pair of flange plates 3 and 4 attached to the flange plate 2b. The winding drum 2 has a substantially rectangular cross-sectional shape, and has four corners 5, 6, 7, and 8 in the circumferential direction on the surface around which the coil is wound, that is, on the outer peripheral surface of the winding drum 2.

Then, in each corner part 5 to 8, when winding the coil, so that the lowermost layer winding is correctly aligned and tightly wound,
A large number of parallel grooves 9 supporting the windings are formed at a predetermined pitch. The parallel grooves 9 are formed on both end surfaces 2a and 2 of the winding ll112.
b.

Further, a tape 10 is attached to each corner except for parts 5 to 8. This tape 10 is in contact with the lowermost winding of the coil, and the material of the tape 10 is a synthetic resin material or paper that can be plastically or elastically deformed to the extent that the contact part with the winding is pressed and depressed. Made of cloth, etc.

The winding drum 2 has a portion 5 at each corner. 15. Four block-shaped winding drum components 11, 12°13 including 7°8
．． It is divided into 14 and becomes 0. As shown in FIG. 3, one winding drum component piece 11, 12 and the other winding drum component piece 13, 14, which form a pair with each other, each have a tension coil spring 16.
, 17 in a direction toward each other.

16a and 17a are spring locking parts. This third figure is
Although the winding drum component pieces 11 to 14 are shown in a forcibly separated state, in a free state where no external force is applied, the spring □
16.17, the winding drum component 11.

12 and 13.14 are drawn together as shown in FIG. 2 or 4.

Moreover, a shaft insertion hole 19 is provided in the winding drum constituent pieces 11 to 14 at a position corresponding to the center of the winding drum 2. This shaft insertion hole 19 penetrates between both end surfaces 2a and 2b of the winding drum 2. Tapered recesses 21 and 22 are formed in the openings at both ends of the shaft insertion hole 19. This recess 2
1 and 22 are the end surfaces 2a of the winding drum, as shown in FIG.
, the inner diameter on the 2b side is widened.

On the other hand, the flange plates 3 and 4 include main bodies 25 and 26 made of lightweight metal such as aluminum alloy.

The mutually opposing surfaces of these body portions 25, 26 are each finished flat. Through holes 28 and 29 are formed in the center of the main body portions 25 and 26, respectively, and these through holes 2
8. The shaft 31 is inserted into the shaft insertion hole 19 at 29.

This shaft 31 includes a rod portion 33 having a male thread 32, a tapered depression prevention portion 34, a collar portion 35, etc.
This collar portion 35 is provided with a pair of protrusions 37. This protrusion 37 is connected to a pair of holes 38 formed in the flange plate 3.
to fit. A nut 39 is screwed into the male thread 32.

The tapered depression suppressing portion 34 fits into the tapered recess 21 described above. That is, when inserting the shaft 31 into the shaft insertion hole 19, by pushing the tapered depression suppressing portion 34 into the tapered recess 21 like a wedge, the winding drum constituent pieces 11 to 14 are subjected to the repulsive force of the springs 16 and 17. It can be pushed out to a predetermined width by resisting.

Each of the winding drum constituent pieces 11 to 14 is slidably attached to the flange plate 3 by screws 42, respectively. That is, the tips of the screws 42 are fixed to screw holes 43 provided in the winding drum components 1 to 14, and the flange plate 3 is provided with long holes 44 through which these screws 42 can move freely.

The screw 42 is adapted to move along the longitudinal direction of the elongated hole 44. Each long hole 44 is connected to the winding drum component 1.
The winding drum components 11 to 14 are formed generally in a diagonal direction so that they can move in a range from an expanded state shown in FIG. 1 to a contracted state shown in FIG. 2.

The surface of the other flange Vi, 4 on the winding drum 2 side is provided with convex portions 46 (see FIG. 5) at four locations, and the winding drum constituent pieces 11 to 14 are provided with convex portions 46 that fit into the convex portions 46. Matching recess 4
7 have been established. These convex portions 46 and concave portions 47 are provided at positions such that they fit into each other when the winding drum constituent pieces 11 to 14 are expanded to a predetermined width.

Further, a tapered presser member 50 is provided protruding from the surface of the flange plate 4 on the winding drum 2 side. This pressing member 50
A hole (not shown) is formed through which the shaft 31 passes. This presser member 50 fits into the tapered recess 22 described above, and by pushing the presser member 50 into the tapered recess 22, the winding drum constituent pieces 11 to 14 are held in place by the spring 16.
, 17 can be pushed out against the repulsive force.

Further, a wear-resistant member 52 is inserted into the surface of each flange plate 3, 4 on the winding drum 2 side at a portion where the end surfaces of corner portions 5 to 8 of the winding drum 2 come into sliding contact. The snake wear-resistant member 52 is made of a metal harder than the material (aluminum alloy) of the main body portion 25,26 of the flange plate.

Furthermore, recesses 54 and 55 are formed at positions facing each other on the edges of the flange plates 3 and 4, and have a length that reaches the outer circumferential surface of the winding drum 2 (the surface on which the coil is wound).

One of the recesses 54 has a recess 54 as shown in FIG.
A winding support groove 57 having a substantially V-shaped cross section is formed at a corner extending from a side wall surface 54a to a surface 54b on the winding drum 2 side. This winding support groove 57 prevents the coil from moving in the wire radial direction (upward in the figure) from the winding introduction part located at the lowest layer. Therefore, this winding support groove 57 is formed along the outer peripheral surface of the winding drum 2, that is, the surface around which the coil is wound.

Next, a process of winding and forming a coil using the winding frame 1 will be described.

The flange plates 3 and 4 are assembled to the body 2, and the sleeves 31 are inserted into the shaft insertion hole 19 and the through holes 28 and 29. At this time, the winding drum constituent pieces 11 to 14 are connected to the tapered presser portion 34 and the presser member 50.
The winding drum constituent pieces 11 to 14 are fixed by being pushed out to a predetermined width and the convex portion 46 fitting into the concave portion 47 .

In this state, by screwing the nut 39 onto the male screw 32 and tightening it, the flange plate 3 is tightened as shown in FIG.
．． 4 and the winding drum 2 are integrated.

Then, an adhesive tape 60 is applied between the recesses 54 and 55.
give. At least one surface of the adhesive tape 6G is an adhesive surface, and the adhesive tape 6G is placed on the winding drum 2 with the adhesive surface facing outward. The material of the adhesive tape 60 is, for example, synthetic resin (
Transparent or opaque) 9 Paper, cloth, etc. Note that it may be fixed to the winding drum 2 by using double-sided adhesive tape. The adhesive tape 60 is cut into an appropriate length in advance.

Then, after hooking the introduction part of the coil winding into the winding support groove 57 of the flange plate 4, the winding frame 1 is rotated about the shaft 31 and the winding is supplied to the end of the coil. The winding located in the lower layer is pressed against the adhesive tape 60 and the tape 10 affixed to the winding drum 2, and these tapes 10.6
The winding is wound around the winding drum 2 while being held stably without causing any deflection or the like of the winding due to the deformation of the winding. In this way, the windings in the second and subsequent layers are sequentially stacked on top of the windings in the lowest layer in a so-called stacked stack shape, with their positions alternately shifted, thereby forming the aligned winding coil A.

When a predetermined number of turns is reached, the rotation of the winding frame 1 is stopped, and the adhesive tape 60 is wound around the coil A from the inner circumference side to the outer circumference side. Since the winding of the tape 60 is carried out with the coil A held on the winding frame 1, even if the tape 60 is tightly wound, the aligned winding of the coil A will not be disrupted. The tape 60 can be tightly wound.

Thereafter, the nut 39 is removed to remove the flange plate 4 from the winding drum 2, and the shaft 31 is moved in the drawing direction. By doing this, the winding drum constituent pieces 11 to 14 are connected to the springs 16 and 1.
The coils are drawn together by the tensile force of 7, and the outer shape of the winding drum 2 is contracted, so that the coil after molding can be easily taken out.

As illustrated in FIG. 6, the unwound coil A thus taken out is wrapped with an adhesive tape 60, so that the winding will not unravel or come apart.

Therefore, the coil A can be formed in the same manner as described above.

In the above embodiment, before winding the coil A, the recess 5 is
I try to pass adhesive tape 60 between 4 and 55,
If the above-mentioned winding frame 1 is used, it is also possible to insert the adhesive tape 60 into the inner circumferential side of the coil A after the coil A is wound. That is, the winding drum 2 is composed of a plurality of divided winding drum constituent pieces 11 to 14, and when the coil A is wound and formed, each of the winding drum constituent pieces 11 to 14 is spread out, and the winding drum constituent pieces are A gap 61 is formed between 11 and 14 (see FIG. 1 or 3). Therefore, after the coil A is wound and formed, the narrow adhesive tape 60 is inserted into the gap 61, and then the adhesive tape 60 can be wound around the coil A.

〔Effect of the invention〕

According to the method of the present invention, by adding a simple process, it is possible to reliably prevent the wires of the coil taken out from the winding frame after winding from being disturbed, and the coil can be firmly fixed with tape. .

[Brief explanation of drawings]

1 to 5 show an example of a winding frame for carrying out the method of the present invention, FIG. 1 is a perspective view of the winding frame in an assembled state, and FIG. 2 is a perspective view with a part of the winding frame removed. , Figure 3 is a front view of the winding drum component piece unfolded, Figure 4 is a front view showing the flange plate and winding drum, and Figure 5 is a front view of the winding drum with the flange plate assembled. FIG. 2 is a sectional view taken along line V-v of FIG. FIG. 6 is a perspective view of the coil. l... Coil winding frame, 2... Winding drum, 3.4... Flange plate, 11, 12, 13.14... Winding drum constituent piece, 5
4゜55...Concavity, 60...Adhesive tape, 61...
・Gap, B...Coil.

Claims (3)

[Claims] (1) In a method for manufacturing a coil in which a coil is wound and formed using a winding frame and the coil is removed from the winding frame after the coil is wound, the coil formed by winding on the winding frame is Before removing the coil from the winding frame, place a tape with an adhesive surface on the winding frame so as to pass through the inner circumference of the coil, and after wrapping this adhesive tape from the inner circumference of the coil to the outer circumference of the coil, A method for manufacturing a coil, which comprises removing the coil from the winding frame. (2) The winding frame has a winding drum and a pair of flange plates provided on both end faces of the winding drum, and a recess is formed in each of the opposing edges of these flange plates, and before the coil is wound and formed, 2. The method of manufacturing a coil according to claim 1, wherein the adhesive tape is passed between the recesses and then the coil is wound. (3) The winding drum of the winding frame is composed of a plurality of divided winding drum constituent pieces, and after the winding drum constituent pieces are spread out and the coil is wound and formed, the gaps between the winding drum constituent pieces are 2. The method of manufacturing a coil according to claim 1, wherein the adhesive tape is passed through the coil and the adhesive tape is wound around the coil.