JPS61100914A - Automatic small-hole winder - Google Patents

Abstract

PURPOSE:To enable efficient automatic winding and easy line-up winding by a simple construction wherein a magnetic pin member is attracted and passed through the small hole of a body on which winding is made, and then wound thereon by the cooperative actions of a movable magnet and a magnetic pin member chucking arm. CONSTITUTION:While a movable electromagnet 7 is turned ON, a chucking arm 5 is opened to release a magnetic pin member 4, and a wire material holding roller 10 is moved downward to bend a wire material 3. The wire material 3 is then attracted onto an attracting portion at the end of the movable electromagnet 7, passed through a small hole and extended by a prescribed length. Thereafter the movable electromagnet 7 is turned OFF, the wire material holding roller 10 is removed laterally to undo the suspension of the wire material, while the chucking arm 5 is rotated to a position under the small hole so that it may chuck the magnetic pin member 4. After the chucking arm 5 is lowered to pull the wire material 3 downward by a required length, it is rotated from the outside of a body 1 on which winding is made, to a position above it, so as to wind the wire material 3 by one turn round on the body 1, and thus the chucking arm 3 is brought to the initial position above the small hole while putting the wire material 3 round on the wire material holding roller 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small-hole automatic winding machine for winding a wire with a small diameter through a ring core, a magnetic head core, etc., which have small holes or small grooves, through the small holes.

- Cores with square windows with side lengths of 0.5 mm or 0.6 mm, or cores with holes with extremely small inner diameters.

When automatically winding a thin wire through the holes and hollow parts of the core of a thin and small magnetic head, conventional equipment has a suction nozzle on one side of the small diameter hole in the core, and then the wire to be wound on the other side. Pass the end of this wire through the hole in the core using vacuum suction, keeping the end of the wire close.

The method is to return it from the outside of the core and pass it through the hole again by vacuum suction. Such vacuum winding machines require large-scale equipment to generate vacuum, and the wire may become twisted due to vacuum suction, and furthermore, if the number of windings is large, it may be difficult to wind the wire midway. However, the disadvantage is that it is difficult to insert the wire into the small hole because of the turbulence of the air flow, which causes the wire to dance.

The present invention eliminates the difficulty in automatically winding a ring core or the like having micro holes as described above, and enables efficient automatic winding with a simple configuration, as well as small hole winding that can be easily aligned. The purpose is to provide a machine.

The small hole winding machine according to the present invention attaches the end of a magnetic pin member capable of magnetic attraction to the end of the wire rod, and arranges a movable electromagnet at a position aligned with the small hole of a body to be wound such as a core or a boppin. ,
The movable electromagnet and the magnetic pin member gripping arm work together to attract the magnetic pin member and wind it through the small hole of the wound body.

Hereinafter, the present invention will be described by way of example with reference to drawing f.

FIG. 1 is a diagram schematically showing the principle of a conventional winding machine using a vacuum suction method. A VC vacuum suction nozzle 2 is provided below the small hole 1a of the ring core 1, and the tip 3af of the wire 3 is brought to a position near the upper side of the small hole 1a! :, the small hole 1a7 of the core l is attracted by the air suction force of the nozzle 2.
c Insertion (-1) This operation is repeated to wind the wire multiple times. In this method, as mentioned above, the fine wire twists and dances due to turbulence in the air flow, etc., and a good winding condition cannot be obtained. do not have.

FIG. 2 is a perspective view of the magnetic pin member 4 and movable electromagnet 7 according to the embodiment of the invention, and FIG. 3 is a perspective view of the magnetic pin member gripping arm 5 according to the embodiment of the invention. Moreover, FIGS. 4(a) to 4(i) are schematic side views showing an automatic winding machine according to an embodiment of the present invention according to the winding operation order. The magnetic pin member 4 is formed of an iron nail, a steel pin, etc., and is attached to the tip of the wire 3 to be wound, for example, with a wire diameter of 30 to 50 μm, with the axes of the two aligned as much as possible, and then glued or glued instantly. It is fixed by adhesive etc. As will be described later, the magnetic pin gripping arm 5 is attached to a suitable drive mechanism (not shown) so that it can move in the axial direction of the small hole in the body to be wound and rotate around the body to be wound.

The movable electromagnet 7 has a coil 8 attached to a straight rod-shaped ferromagnetic material, and has a slightly large-diameter attraction portion 7a at the tip of the rod-shaped magnetic material.
is formed. This movable electromagnet 7 is connected from the end 4at of the magnetic pin member 4 to the adsorption part 7a from the axial direction of the magnetic pin member 4.
Adsorb it with the tip of the.

Vertical direction (electromagnet axis direction) by a drive mechanism (not shown)
Travel back and forth. As will be described later, both the magnetic pin member gripping arm 5 and the movable electromagnet 7 operate in conjunction with each other.

Next, the overall schematic structure and operation of the small-hole automatic winding machine using the above-mentioned magnetic pin member, its gripping arm, and movable electromagnet will be described with reference to FIGS. 4(a) to (i). In FIG. 4(a), the movable wire holding roller 10 and the magnetic pin member gripping arm 5 are arranged above the winding body 1 having the small hole 1a, and the movable wire holding roller 10 and the magnetic pin member gripping arm 5 are arranged below the winding body 1 and at the small hole 1at. A movable electromagnet 7 is arranged at a position corresponding to 'c. In the same figure (a), first, the wire 3 with the magnetic pin member 40 attached to the tip is transferred from the wire supply section 11 to the movable wire holding port -ra 1.
0 to a position near the upper side of the small hole 1a of the wire-wound body 1 and gripped by the gripping arm 5, and by lowering the gripping arm 5, the pin member 41 is placed near the small hole 1a or the small hole Move inside. Then, the movable electromagnet 7 is raised so that the magnetic pin member 4 and the movable electromagnet 7 are in contact with each other or closely face each other. Next, as shown in FIG. 4(b), the movable electromagnet 7t is turned on and the gripping arm 5t is opened to open the magnetic pin member 4.
is released, the wire holding roller 10 is moved downward to bend the wire 3, and the tip of the magnetic pin member 4 is attracted to the tip attraction portion 7a of the movable electromagnet 7. In this case, the opening (release) timing of the gripping arm 5 is determined by the magnetic pin member 4.
It is preferable to do this after the movable electromagnet 7'/C is attracted. In this state, as shown in FIG. 4(0), the wire holding roller 10 is lowered to loosen the tension on the wire 3, and the movable electromagnet 7
When the pin member 4'/c is lowered, the wire 3 led by the pin member 4'/c is inserted through the small hole 1a'/c. After the wire 3 has been stretched to a specified length, the movable electromagnet 7 is turned off and the VC is turned off as shown in FIG. 4(d).
), Next'/c At the stage of FIG. 4(e), remove the wire holding roller 10 to the side and unhook the wire,
The magnetic pin and member gripping arm 5, which was located above the small hole, is rotated to a position below the small hole, and the arm 5 grips the magnetic pin member 4. The movable electromagnet 7 continues to move further downward while remaining in the OFF state, and after lowering the gripping arm 5 and pulling the wire 3 downward for the required length, as shown in FIG. 4(f),
The gripping arm 5 is rotated from the outside of the wire-wound body 1 to a position above it (FIG. 4(g)). Here, the magnetic pin member 4 of the gripping arm 5 is passed to the other arm 5' as shown in FIG. 4(g), or the gripping arm 5 is rotated as it is as shown in FIG. 4(h). While winding the wire 11C@material 3 for one turn and winding the wire 3 around the wire holding roller IO'lc, move the gripping arm 5 to the position above the first small hole (FIGS. 4(a) and (i)). bring to. Possible at this time
#h The electromagnet 7 is located directly below the small hole of the wire-wound body 1 in the on state.

That is, it rises to the initial position shown in FIG. 4(a) and is ready for the next suction operation. After this, the operations shown in FIGS. 4(a) to 4(i) are repeated the required number of times, that is, the number of times the wire is wound.

Note that the wire holding roller 10 described above may be omitted depending on the form of the winding. Such interlocking operation f of energizing, deenergizing, raising, and lowering one magnet 7 and opening/closing and rotating the gripping arm 5: While repeating the operation, a thin wire is passed from the small hole 1a of the wound body 1 to the outer periphery 1flS. The wire is wound several times, for example, about 20 tans.

In the present invention, unlike the conventional large air suction method, an air flow is created around the small hole in the core to be sucked into the nozzle, and instead of passing the wire through the small hole in the core using this air flow trap, the magnetic pin member is used as a magnet. Since the wire is attracted and pulled, there is no air flow or air turbulence around the wire, and even small holes can be inserted reliably by simply aligning the position of the pin and one magnet with the position of the small hole. This eliminates the possibility of the wires getting tangled. In addition, the tension of the wire becomes linear, making it easy to wind in alignment. Since there is no air flow, there is no dust or flakes, and you can work even in environments that dislike dust.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of a conventional vacuum suction type automatic winding machine, Figure 2
The figure is a perspective view of a movable electromagnet and a magnetic pin member applied to the present invention, FIG. 3 is a perspective view of a magnetic pin member gripping arm applied to the present invention, and FIGS. A small hole automatic winding machine according to an embodiment of the present invention. FIG. 3 is a schematic side view showing the winding operation order. 1...Wound body, 1a...Small hole, 300
．． Wire rod, 4...Magnetic pin member, 5.5
′... Magnetic pin member gripping arm, 7... Movable electromagnet, 8... Coil, 10... Movable wire holding roller, 11... Wire rod supply section.

Claims (1)

[Claims] A magnetic pin member is fixed to the end of the wire so that its axis coincides with the wire, and a magnetic pin member is arranged below the small hole of the wire to be wound and can be moved up and down to approach and move away from the small hole. and a gripping arm that grips the magnetic pin member and rotates from the bottom to the top of the wound body, and the movable electromagnet holds the tip of the magnetic pin member through the small hole. A small hole automatic winding machine characterized in that the magnetic pin member is attracted and released at a lowered position, and the holding arm grips the released magnetic pin member at a position below the small hole and rotates toward the upper side of the small hole.