JPS61179521A - Manufacturing jig for ring coil - Google Patents

Abstract

PURPOSE:To obtain a jig which enables to surely wind in one layer of definite diameter spiral shape by providing the second groove which reaches to the first ring groove provided to the central direction of a moving jig formed at the side surface of the first ring groove which coincides with the internal diameter of a required coil and by providing a hole for fitting in a fixed jig. CONSTITUTION:Solder is put on both the ends 5a, 5b of a cut coil material 5 and one end 5a is bent. Then, wound in a spiral shape with a jig 10. The end 5a which is bent in a L-shape is inserted in the second groove 11b and the other end 5b is held and wound in a spiral shape in a groove 11a manually. The width of the grooves 11a, 11b is made coincide with the diameter of the coil material 5. After required winding is carried out, the other end 5b of the coil is inserted in the second groove 11b and is bent in the L-shape. In this case, a solvent such as acetone, etc. can be permeated in the coil 5 and the end 5b and the both ends can be twisted. Since the surface of the coil 5 is coated with the solvent, the shape wherein the coil 5 is formed is fixed. Then, a moving jig 11 is drawn out to the direction shown with an arrow A and the completed coil 5 is removed from the moving jig 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a toroidal coil manufacturing jig suitable for application to, for example, a filter for a rotating transformer of a video tape recorder.

Conventionally, in the manufacture of this type of annular film, since mass production is required, mechanical winding is almost always carried out using automatic machines. However, manufacturing a specially shaped toroidal coil by hand may be more efficient than by machine winding. So-called VTR
As shown in FIG. 1, for example, a coil 1 for a rotating transformer is often formed into a spiral shape with several turns, with the coil end 2 bent inward and bent upward or downward. In this case, since the material of the film (2) is made of steel or metal, it itself has rigidity. As a result, it has the property of expanding outward more than a spiral fill. Therefore, when the coil 1 is subsequently fitted into the rotary transfer, since the outer diameter of the coil 1 has expanded, it is necessary to readjust the coil 1 at the time of assembly before fitting it into the rotary transfer, which has the disadvantage of being very difficult to work with.

Further, there is a risk that the coil 1 shown in FIG. 1 may be deformed when being transported to the pond process.

In view of this, the present invention solves the disadvantages that the wire material is multi-layered or does not have a predetermined diameter during coil manufacturing, and
The main objective is to propose a manufacturing jig with a structure that can reliably wind one layer into a spiral shape of a predetermined diameter.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIGS. 2 to 4 are explanatory diagrams of an example of a fill manufacturing process using the jig of the present invention. First, as shown in Figure 2,
The coil material 5 is arranged in a jig 6.7 for determining its dimensions. The jig 6 is a plate with bins 8 implanted at both ends, and the jig 7 is a plate in which a plurality of grooves 9 corresponding to the wire diameter of the coil material 5 are formed. Then, after placing the jig 7 on top of the jig 6 and hooking the coil material 5 on the bin 8, the fill material 5 is placed on the end surface of the jig 7.
cut. The length of the jig 7 is set in advance to match the required length of the completed coil. After that, solder is applied to both ends 5a and 5b of the cut fill material 5, as shown in FIG. In order to form a bent shape, one end 5a is bent. Incidentally, the surface of the coil material 5 is coated with a fusing agent that melts and sticks when impregnated with, for example, 7 cent liquid.

Next, it is spirally wound using a jig 10 shown in FIG. This manufacturing jig 10 is composed of a moving jig 11 in which a first annular groove 11a matching the desired fill inner diameter is formed, and a fixing jig 12 that fits into the moving jig 11. Further, a second groove 11 is formed in the radial direction to sandwich the coil terminal.
It has b. 11C is a fitting protrusion, and 12a is a fitting hole.

First, the end 5a bent into an L shape is inserted into the second groove 11b, and the other end 5b is held and manually wound into a spiral around the groove 11a. It goes without saying that the widths of the grooves 11a and llb are made to match the wire diameter of the fill material 5.

After completing the necessary windings, the other end 5b of the coil is inserted into the second groove 11b and bent into an L shape. The coil wound through the above steps has a shape as shown in FIG. 4, but at that time, a melting agent such as acetone can be penetrated into the coil 5c and the end portion 5d, and both ends can be twisted. can. Since the surface of the coil 5 is coated with the melting agent as described above, the molded shape of the fill 5 shown in FIG. 4 is fixed. After that, the moving jig 11 is pulled out in the direction of arrow A, and the completed coil 5 is pulled out from the moving jig 11.
to finish manufacturing.

FIGS. 5 and 6 are a sectional view and a front view showing an example of a pond according to the present invention. Reference numeral 20 indicates a fixing jig, and one end thereof is provided with a plurality of convex bodies 22 in the circumferential direction into which the moving jig 21 is fitted. Also, a moving jig 21 fitted to this moving jig 20
As shown in FIGS. 7 and 8, a concave groove 23 that fits into the convex body 22 is bored, and as shown in FIG.
A compression spring 24 is engaged between the moving jig 21 and the moving jig 21 . The moving jig 21 is always biased to the right in the figure by the compression spring 24. Reference numeral 25 indicates a stroke adjusting screw of the moving jig 21, and the rightward bias position of the moving jig 21 is regulated by the screwing dimension of the adjusting screw 25 into the moving jig 21. The moving jig 21 has a first annular groove 2 that matches the inner diameter of the coil.
6 is formed.

In this case, as shown in FIG. 8, the convex body 22 and the concave body 2
By setting the inner diameter dimension a of No. 3 to be smaller than the diameter 11 of the annular groove 26, by biasing the moving jig 21 to the left in FIG. The film wound along the annular groove 26 is released from the annular groove 26 by a uniform pressing force. The opposite end of the moving jig 21 has an engaging protrusion 27 with which the coil set disk 31 is engaged. As shown in FIG. 6, a sliding plate 35 is provided with a circular hole 32 larger than the engaging protrusion 27 in its center and a circular hole 34 larger than the head 27a of the engaging protrusion 27 in its center. It is attached so that it can slide while being regulated by the bin 36. The circular hole 34 of the sliding plate 35 is continuously bored with a small circular hole 34a equal to the diameter of the neck 27b of the engaging protrusion 27, and the circular hole 34 of the coil set disk 31 is initially bored.
4 and the circular hole 32 of the sliding plate 35, the engagement protrusion 27
is inserted, and the small circular hole 34a and the neck portion 27b of the engaging protrusion 27 are engaged with each other by sliding the sliding plate 35 to the left in FIG. 21, the 6-coil set round 31 has a second hole drilled in the radial direction that holds the fill terminal.
A groove 38 is formed.

Next, a method for manufacturing a coil using this manufacturing jig will be described. First, by ensuring close contact between the moving jig 21 and the coil setting disk 31, a gap equal to the annular groove 26 is created between the moving jig 21 and the fill setting disk 31, so that the coil setting disk 31 is L-shaped. The bent coil end 5a is inserted into the groove 38, and the other end 5b is held and manually wound into the groove 26 in a spiral shape.

Of course, the width of the grooves 26 and 38 is matched to the wire diameter of the coil material 5. After completing the necessary winding, the other end 5b of the coil is inserted into the groove 38 and bent into an L shape.

The coil wound through the above steps has a shape as shown in Fig. 4. At that time, a melting agent such as acetone is applied to the coil 5c.
It can also be allowed to penetrate into the terminal portion 5d. Since the surface of the coil 5 is coated with the melting agent as described above, the molded shape of the coil 5 shown in FIG. 4 is fixed.

After that, the engagement between the moving jig 21 and the fill-setting disk 31 is released, the fill-setting disk 31 is taken out, and the moving jig 11 is moved leftward in FIG. 5 against the spring 24. By pushing out, the protrusion of the convex body 23 of the fixing jig 20 causes
The annular fill 5 is removed from the moving jig 11 to complete the manufacturing process.

As described above, according to the present invention, there is provided a moving jig in which a first annular groove corresponding to a desired coil inner diameter is formed on the side surface, and a fixing jig that fits into a fitting protrusion of the moving jig. The moving jig is provided with a second groove drilled toward the center and reaching the first annular groove in order to hold the fill end, and the fixing jig is provided with a second groove into which the moving jig is fitted. Since fitting holes are provided for fitting into the fitting protrusions, one end of the coil wire rod can be hooked into the second groove and wound around the first annular groove to form an annular filter having a predetermined inner diameter. is formed, and by simply hooking the other end of the coil wire into the second groove and biasing the moving jig or fixing jig, the coil whose end portion is bent at right angles can be kept in its shape. can be easily manufactured. Therefore, in use, by simply setting a large number of the first and second grooves, ring coils of various diameters can be easily obtained, and furthermore, there is no need for skill when manufacturing the ring coils. have

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an example of a coil for a rotating transformer;
The figure is a perspective view showing an example of a jig for cutting coil material, FIG. 3 is a partially cross-sectional perspective view showing an embodiment of the jig of the present invention, FIG. 4 is a diagram for explaining the spiral fill, and FIG. 6 is a sectional view and a front view showing an example of a pond according to the present invention, and FIGS. 7 and 8 are
The figures are a sectional view and a front view of the moving jig. 10... Manufacturing jig, 11... Moving jig, lla...
・First ring groove, 12...fixing jig, llb...second
groove, 11c...fitting protrusion, 12a...fitting hole, 20...fixing jig, 21...moving jig, 22...
- Convex body, 23... concave groove, 26... first annular groove,
31... Disk for coil set, 38... Second groove. Applicant's agent Patent attorney Takashi Akiyama Figure 1

Claims (1)

[Claims] The moving jig is composed of a moving jig having a first annular groove formed on its side surface that corresponds to the desired inner diameter of the coil, and a fixing jig that fits into a fitting protrusion of the moving jig. In order to hold the terminal, a second groove is provided which is drilled toward the center and reaches the first annular groove, and the fixing jig is provided with a fitting groove that is fitted into the fitting protrusion of the moving jig. A manufacturing jig for an annular coil, characterized in that holes are provided in each.