JPS635889B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wire supply device for a winding device, and is used for supplying winding wire to a minute hole in a video head having a minute hole, a magnetic head for a computer, etc. It is related to the device.

Conventional Structure and Problems Conventionally, a toroidal winding machine as shown in FIG. 1 has been used to wind wires in hollow holes. In a toroidal winding machine, wire is wound on a spool a in advance, and the spool a and shuttle b rotate a hollow hole in the wire to be wound c, thereby winding the wire. is the wound object c
Since it is necessary to rotate the wire through a hollow hole, there is a limit when the hollow hole becomes small, and it is impossible to wind the wire in a minute hole with a diameter of 1 mm or less. The winding for the video head is extremely thin, with a wire diameter of 0.03 mm to 0.05 mm, and the hole size is small, about 0.25 mm x 0.3 mm. Technically, it is difficult to automate the winding, and it must be done manually or with simple jigs and tools. They used it and relied on human hands. On the other hand, various winding methods have recently been proposed for difficult winding, but there are still many problems to be solved. For example, in the wire winding method described in Japanese Patent Application Laid-Open No. 56-148812, wire rods having a predetermined length are supplied, and full automation has not been achieved.

OBJECTS OF THE INVENTION In view of the above-mentioned drawbacks, the object of the present invention is to automate the wire supply in order to realize the automation of the winding of video heads and computer magnetic heads having minute holes.

Structure of the Invention The present invention provides a wire supply unit that draws out a wire from a winding bobbin and supplies the wire, in which at least two wire gripping elements and one or more wire cutting elements act on each other. having means, two gripping elements arranged at a predetermined interval in the wire feeding direction, one or more wire cutting elements arranged between them, and from one gripping element to the tip of the wire rod; It has a structure that allows the wire to be cut to a predetermined length, and the wire tip necessary for passing the wire through the microscopic hole is of the predetermined length and is free from bends, warpage, etc. at one end and the other end of the wire. It has the effect of being able to.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Figure 2 shows a video head according to this embodiment, in which a wire 2 is passed through a toroidal core 1 having a 0.25 x 0.3 mm microhole to the left and right, and 6
Wrap ~20 times.

Figure 3 is an external view showing the entire device, 3 is the main body,
4 is a board, which is fixed to the main body 3. Reference numeral 5 denotes a winding mechanism section, which is assembled on the substrate 4. 6 is a recognition TV camera, and 7 is a monitor TV, which are built into the upper part of the main body 3. Recognition TV camera 6
is located at the upper part of the winding mechanism section 5, and is used to recognize the position of the fine hole of the toroidal core 1 and the wire rod. 8
is an operation switch, which is built into the upper part of the main body 3. Reference numeral 9 denotes a workpiece supply section, and 10 denotes a line supply section, each of which is mounted on the substrate 4.

Next, the configuration of the wire supply section 10 will be explained with reference to FIGS. 4 to 7. 11 is a winding bobbin, 12 is a bobbin stand, 13 is a bobbin case, and 14 is an upper lid of the bobbin case.The bobbin stand 12 is attached to the board 4, has a support 15 in the center, and supports the winding bobbin 11. It is inserted into the support column 15 and placed in place.
The outer periphery of the winding bobbin 11 is cylindrical and covered with a bobbin case 13 made of transparent acrylic.
3, the bobbin case upper lid 14 is arranged. A nozzle 16 that serves as a guide for pulling out the wire from the winding bobbin 11 is bonded and fixed to the center of the bobbin case upper lid 14. 17 is a line guide bracket, 18 and 19 are line guides, and the line guide bracket 17 is attached to the bobbin case upper lid 14.
The line guides 18 and 19 are fixed to the line guide bracket 17. Further, reference numeral 20 denotes a felt gripping type tension means, which is fixed to the wire guide bracket 17.

21 is a bracket attached to the board 4;
2 is a line guide provided on the bracket 21;
23 and 24 are wire supply nozzles, 25 and 26 are nozzle holding fittings, 27 is a bearing, 28 is a tension arm rotatably supported by the bearing 27, and 2
9 is a tension roller provided at the free end of this tension arm 28, and 30 is a gripping and cutting device for wire supply. A wire guide 22, nozzle holding fittings 25 and 26, a bearing 27, and a wire supply gripping and cutting device 30 are attached to the side surface of the bracket 21. Nozzle 2
3 and 24 are glued and fixed to nozzle holding fittings 25 and 26, respectively. Line guide 22, nozzle 2
3 and 24 are arranged in a straight line in the horizontal direction, which is a wire supply path, and are supplied to the wire supply gripping and cutting device 30. Further, a tension roller 29 is disposed above the wire between the nozzle 23 and the nozzle 24 via a tension arm 28 that rotates under its own weight around a bearing 27 so as to absorb slack in the wire. . Next, regarding the wire supply gripping and cutting device 30,
This will be explained according to FIGS. 5 to 7.

31 and 32 are wire gripping elements, and 33 and 34 are cutting elements, which rotate about a fulcrum shaft 35. Reference numeral 36 denotes a main body base that supports the fulcrum shaft 35 and also supports the receiving portions of the gripping elements 31 and 32 and the cutting elements 33 and 34.
The lower blades 37 and 38 are integrally formed. Also,
Wire guides 39 and 40 are arranged outside the gripping elements 31 and 32 to correctly guide the wire along the path to the wire supply section. The means for applying the wire gripping elements 31 and 32 is to fit and press-fit a cylinder 42 into a block 41 fastened to the main body base 36.
A piston 43 that can slide inside the piston 2 is installed, a return spring 44 for the piston 43 is placed on the rod side of the piston 43, and the piston 43 is fastened with a rod cover 45. 4
6 is an air inlet, 47 is a gripping means 31 and 32
It is a retaining spring. Note that the piston 43 faces downward and comes into contact with the points of action of the T-shaped gripping elements 31 and 32. Each of the gripping elements 31 and 32 has these. Further, the means for acting the wire cutting elements 33 and 34 is provided by fitting and press-fitting a cylinder 48 into a block 41 fastened to the main body base 36.
A slidable piston 49 is assembled in the piston 8, and a return spring 50 for the piston 49 is disposed on the rod side of the piston 49, and is fastened with a rod cover 51. 5
2 is an air inlet, and 53 is a cutting element return spring. Note that the piston 49 is oriented laterally and abuts on the points of action of the L-shaped cutting elements 33 and 34. These are included in each of the cutting elements 33 and 34.

The operation of the wire supply gripping and cutting device configured as described above will be described below. First, the winding method will be briefly explained with reference to FIG. 8. In order to wind the wire 2 around the toroidal core 1, one end of the wire held by the winding chuck 54 is inserted from one side of the toroidal core 1. The wire is pulled out from the toroidal core 1 by the chuck 55, the wire is re-grasped by the winding chuck 54, wound, tension is applied, and the tip of the wire is inserted into the toroidal core again. When winding is performed, when inserting one end into the wire, it is essential that the hole position of the toroidal core 1 and the position of the tip of the wire coincide. In this example,
When the wire is gripped by the winding chuck 54 and wound and inserted, the position of the tip of the wire is recognized by a recognition TV camera and the hole position is moved. However, the length of the tip of the wire is constant; In addition, since it is essential that the tip of the wire does not fold or bend, the tip of the wire is cut off after each turn when changing from the drawer chuck 55 to the winding chuck 54. Similar to the insertion of the wire during winding, when feeding the wire from the winding bobbin, it is essential that the length of the tip of the wire is constant and that there is little folding or bending at the tip. As shown in FIG. 4, the wire passes from the winding bobbin 11 to the felt-gripping tensioner 20, the wire guides 18, 19, and 22, and the nozzle 23, and then passes through the tension arm 2, which rotates under its own weight around a bearing 27.
The tension roller 29 swinging through the wire 8 absorbs the slack of the wire, passes through the nozzle 24, and reaches the wire supply gripping and cutting device 30. In the wire feeding gripping and cutting device 30, the wire is guided by wire guides 39 and 40 at both ends, and slack in the wire is absorbed by the tension roller 29, so that the wire is always kept straight in the wire feeding direction. gripping element 31 between line guides 39, 40;
A cutting element 33, a cutting element 34, and a gripping element 32 are arranged in this order. In this embodiment, the gripping elements 31 and 3
2. The cutting elements 34 and 35 are configured to operate independently. Gripping elements 31 and 32 are air ports 4
6, when air is supplied, the piston 43 descends along the cylinder 42, pushes down the points of action of the gripping elements 31 and 32, rotates around the fulcrum shaft 35,
Lower blade 3 integrally formed with main body frame 36
7 and 38 to grip the wire. Also, when air is exhausted from the air port 46, the piston 43
It is raised by the return spring 45, and the gripping element 31.
32 is rotated by a holding spring 47 to release the grip on the wire. Similarly, when the cutting elements 34 and 35 are supplied with air from the air port 52, the piston 49
advances along the cylinder 48 and cuts the cutting elements 33.
34 is moved forward, the wire rod is rotated about the fulcrum shaft 35, and is pressed against the lower blades 37 and 38 by the urging spring 56 to cross and cut the wire. Also, when air is exhausted from the air port 52, the piston 49
is retracted by the return spring 50, and the cutting element 33.
34 is rotated by the cutting element return spring 53 and separated from the lower blades 37 and 38.

Next, gripping elements 31 and 32 and cutting elements 33 and 34
The state will be explained with reference to FIGS. 9 to 11.
In FIG. 9, the gripping elements 31, 32 and the cutting elements 33, 34 are separated from the wire, and the wire is free to move along the lower blades 37, 38 of the cutting elements. In FIG. 10, after the gripping elements 31 and 32 grip the wire, the cutting element 34 acts to separate and cut the wire from the winding bobbin 11 and the wire on the supply side, and the winding is shown to the left. When the chuck 54 is moved and the cut wire is gripped, the tip of the wire from the winding chuck 54 can be kept straight with a predetermined length l. The length of the tip of this line l
is the same as the cutting length when re-clamping during winding, and the toroidal core 1 is in the same condition as during winding.
This allows the wire to be passed through.

In FIG. 11, after the gripping elements 31 and 32 grip the wire, the cutting element 33 acts to further cut the wire that was cut in FIG. When the winding chuck 54 is moved and the cut wire is grasped, the winding chuck 54
Therefore, the tip of the wire can be kept straight with a predetermined length l.

The reason why two cutting elements are provided is that the wire is extremely thin and has extremely low rigidity.If the cutting blades were to cross each other, one cut end of the wire would be bent, so the middle part would be discarded as chips. Both the starting end and the terminal end of the wire are passed through the fine holes of the toroidal core 1 so that the wire can be wound. Further, the same effect can be obtained even if there is only one cutting element and cutting blades are provided on both sides of the cutting element, or if two cutting elements are used by one means. In the method of winding the wire by recognizing the wire, as time passes for wire cutting, the optical selection of the copper wire disappears and the recognition rate decreases. Therefore, in order to cut the wire immediately before recognition, two cutting elements are used, and two independent cutting elements are used. I am trying to make it work.

Next, a series of wire winding operations using the wire feeding device of the present invention will be briefly explained with reference to FIG.

In FIG. 12, an operator pulls out the wire from the winding bobbin 11 and guides it to the wire supply section.

...The wire is gripped by the gripping elements 31 and 32 and cut by the cutting element 34, and preparation for automatic operation is completed.

...The cutting element 33 cuts the wire, and the winding chuck 54 grips the right end.

...The gripping elements 31 and 32 are released, and the winding chuck 54 is moved to a position where the tip of the wire is recognized.

...The end of the line is recognized by the recognition TV camera 6.

...Reverse the winding chuck 54 and insert the wire tip into the toroidal core 1.

... Pull out the wire with the drawer chuck 55.

...Perform a series of winding operations to complete the winding on one side.

...The cutting element 34 cuts the wire, and the winding chuck 54 grips the left end.

...The winding chuck 54 holding the wire moves to a position where the tip of the wire is recognized.

...Reverse the winding chuck 54 and insert the wire tip into the toroidal core 1.

...The inserted wire is grasped by the pull-out chuck 55.

...make a series of winding movements to complete the winding on the opposite side.

As described above, according to the present invention, when winding a wire around a toroidal core having micro holes, a wire supply gripping and cutting device having two gripping elements and one or more cutting elements configured as described above is provided. By arranging the wire at the tip of the wire supply section, a series of wire windings can be automated.

In this embodiment, the gripping element and the cutting element are driven by an air cylinder, but a solenoid or a cam driven by rotation may be used. Furthermore, although two cutting elements are used, they may be integrated and have blades on both sides, or other cutting means other than the means in which the cutting blades intersect may be used.

Further, in this embodiment, the gripping and cutting device for wire supply is configured as one unit in order to make it compact, but it goes without saying that it may be separated into a plurality of parts.

Effects of the Invention As described above, the present invention has at least two gripping elements, one or more cutting elements, and a means for acting the elements, and in the feeding direction of the wire,
Two gripping elements are arranged at a predetermined distance apart, one or more cutting elements are arranged between them, and the wire is cut to a predetermined length from one and the other gripping element to the tip of the wire. When winding a toroidal core with micro holes, it is possible to automate the wire supply, and the winding, which conventionally relied on manual labor, can be automated, and its practical effects are great. .

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a toroidal winding machine intended for winding wire into a hollow hole, and FIG. 2 shows a toroidal core, in which a is a top view and b is a front view. FIG. 3 is an overall external perspective view of a winding device according to an embodiment of the present invention, and FIG. 4 is a side view of a wire supply section of the same winding device.
FIG. 5 is a side view of the wire supply gripping and cutting device of the same winding device, FIG. 6 is a front view of the wire feeding gripping and cutting device of the same winding device, and FIG. 7 is a side view of the wire feeding gripping and cutting device of the same winding device. FIG. 8 is a perspective view showing the winding operation of the winding device; FIGS. 9 to 11 are operation diagrams of the wire feeding grip and cut device of the winding device; 12th
The figure is a conceptual diagram continuously showing the winding operation of the winding device. 31, 32, 37, 38...grip element, 33,
34... Cutting element.

Claims (1)

[Claims] 1. In a winding device that grips a portion having a predetermined length from the tip of a wire rod and passes the wire through a hollow hole or similar shape, at least two wire gripping elements and one or more wire rod cutting elements are used. and a means for causing the gripping element and the cutting element to act, one gripping element and another gripping element are arranged at a predetermined interval in the wire feeding direction, and between them,
One or more cutting elements are disposed, and the wire rod gripped by the gripping element and the means for acting on it is cut in a predetermined direction from one gripping element and the other gripping element to the tip of the wire rod by the cutting element and the means for acting on it. A wire supply device for a winding device, characterized in that it is configured to cut into lengths.