JPS6155759B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a spiral coil manufacturing apparatus.

For example, an oscillation coil used in an electromagnetic cooking coil is constructed by spirally winding a wire in one plane.

The present invention provides a spiral coil manufacturing apparatus capable of manufacturing the above spiral coil with high efficiency.

The invention will be explained in detail below with reference to the drawings. 1st
In Figures 1 and 2, a motor 3 is provided on the lower surface of a board 2 that has legs 1 and is installed below the floor, and is connected to the output shaft of this motor or via a speed reducer (not shown). The output shaft 4 passes through the substrate 2 and is rotatably supported by the substrate 2 while being restrained in the axial direction, and a turntable 5 coated with Teflon (trade name) is fixed to the upper end of the output shaft 4.
A disk-shaped winding form 6 is concentrically projected from the upper surface of the turntable 5.

A plurality of air cylinders 7 are arranged on the substrate 2 on a concentric circle of the turntable 5, with their output shafts parallel to the output shaft 4 of the motor 3, and at the output shaft end of each air cylinder 7, Each inverted L-shaped presser roller support arm 8 is attached with one leg parallel to the output shaft.

In addition, the base end of a roller shaft 10, which has a presser roller 9 made of Teflon (trade name) loosely fitted at the tip and restrained in the axial direction, is elastically attached to the end of the other leg of each arm 8. It is being That is, a pin 11 parallel to the output shaft 4 is projected upward from the base end of the roller shaft 10, this pin passes through a leg piece of the arm 8, and a stopper 12 is provided at the end of the pin. A spring 13 is attached to the pin 11 between the lower surface of the leg of the arm 8 and the shaft 10.

In FIG. 1, five presser rollers 9 are installed, and the distance between one pair of adjacent rollers is larger than the distance between other pairs. A guide roller 14 consisting of a pair of free rollers having a rotating shaft parallel to the output shaft 4 is provided close to one of the pair of rollers with a large interval, and at an intermediate position between the pair of rollers, a guide roller 14 is provided. A wire guide 15 is provided which is capable of imparting uniform movement in the radial direction of the turntable 5 in synchronization with the rotation of the turntable 5 by a mechanism that does not rotate the turntable 5. The wire guide 15 is assumed to be moved radially outward by the diameter of the wire used per turntable rotation. Reference numeral 16 denotes a rod that supports the wire guide and connects the wire guide to the mechanism (not shown). An L-shaped notch 17 is provided on the bottom surface of the tip of the wire guide 15, the ceiling of which is spaced apart from the top surface of the turntable 5 by the diameter of the wire, and having a radial dimension of the turntable equal to the diameter of the wire.

In addition, a support 18 parallel to the output shaft 4 is installed on the board 2 at a position sufficiently far away from the center of the turntable.
For example, a tank 19 for supplying an adhesive such as a hot-melt thermosetting type is rotatably mounted, and an adhesive supply pipe 20 having a length that can reach at least the periphery of the winding form 6 is provided from the tank. A supply nozzle 21, which will be described later, is connected to the tip of the protruding supply pipe with its ejection direction parallel to the output shaft 4. The adhesive supply nozzle is assumed to be opened intermittently according to appropriate commands.

Further, the tank 19 is given an oscillating motion in synchronization with the rotation of the turntable 5 by a mechanism not shown.

The apparatus of the present invention having the above structure operates as follows. That is, the end of the wire 22 passed between the guide rollers 14 is fixed to one point on the periphery of the winding form 6, and the turntable 5 is rotated once. Then, the wire is wound around the winding form 6 once. Here, wire guide 1
The side wall of the notch 17 of 5 is brought into contact with the outer periphery of one turn of the wire rod, and the presser roller 9 that presses the wire rod is moved to the air cylinder 7.
The roller 9 is brought into contact with the upper surface of the first turn.

If the turntable 5 is rotated continuously here,
The wire 22 is regulated by the turntable 5, the presser roller 9, and the notch 17 of the wire guide 15, and is wound in a spiral shape within one plane.

During the above-mentioned winding, the supply nozzle 21 is intermittently opened according to an appropriate command, and the wound wire 22 is intermittently bonded.

Although illustrations and explanations are omitted, a detection mechanism is provided, and when this mechanism detects that the winding diameter of the wire 22 has reached a predetermined value, the turntable 5 is automatically stopped. , the presser roller 9 is raised. Note that the turntable may be stopped and the presser roller may be lifted manually by an operator by visually detecting the winding diameter.

Next, the wire is cut between the turntable 5 and the guide roller 14, and the wound body (spiral coil) of the wire is removed from the turntable 5. In addition,
Since the turntable is coated with Teflon (trade name), the aforementioned removal is easy.

As is clear from the above, according to the apparatus of the present invention, spiral coils can be manufactured with high efficiency.

Note that the present invention is not limited to the above embodiments. For example, adhesive supply tank 19, nozzle 21
may be provided integrally with the wire guide 15. Also,
The nozzle 21 may be always open while the turntable is rotating, and the spiral coil may be entirely bonded.

Furthermore, it is also possible to install a hot jet instead of the nozzle 21, use a wire having a self-bonding type insulation coating as the wire, and fix the windings using the hot jet.

FIG. 3 shows an example of a spiral coil manufactured according to the present invention. That is, in the innermost and outermost windings of the spiral coil 23 manufactured in this figure, the ends of the wire 22 are not stretched long to connect to lead wires, etc., but are directly connected to the vicinity of the coil 23. A terminal 24 is attached to the terminal. By doing so, it is possible to considerably reduce accidents in which bending occurs repeatedly in the vicinity of the coil and the wire breaks when the end of the wire is extended for a long time.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a sectional view showing an example of a spiral coil manufactured by the apparatus of the present invention. 2... Board, 4... Output shaft, 5... Turntable,
6... Winding form, 8... Presser roller support arm, 9... Presser roller, 14... Wire guide roller, 15... Wire guide, 19... Adhesive supply tank, 20... Supply pipe,
21... Supply nozzle.

Claims (1)

[Claims] 1. A spiral coil manufacturing device having the following structural requirements. a Turntable rotated around a vertical axis b A disc-shaped winding form c concentrically protruding from the top surface of the turntable C capable of moving toward and away from the top surface of the turntable and elastically supported in the vertical direction a plurality of presser rollers d having free rotation axes in the radial direction of the turntable; a pair of guide rollers e provided close to one of the presser rollers and having a free rotation axis in the vertical direction; a presser foot proximate to the guide rollers; It is provided between the roller and the roller adjacent to it, and is given constant velocity movement outward in the radial direction of the turntable in synchronization with the rotation of the turntable. Wire rod guide f having an L-shaped notch whose directional dimension is equal to the diameter of the wire rod used. Wire rod bonding means that moves outward in the radial direction as the turntable rotates.