JPH0149002B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a winding method for winding a wire around a toroidal core of a video head, a magnetic head for a computer, etc., and a winding device thereof.

BACKGROUND ART Conventionally, a toroidal winding machine as shown in FIG. 10 has been used to wind wires in hollow holes. A toroidal winding machine winds wire by winding the wire onto a spool in advance, and the spool and shuttle rotate a hollow hole in the object to be wound. Since it is necessary to rotate through a hollow hole, there is a limit when the hollow hole becomes small, and it is impossible to wind the wire in a hollow 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, recently, various winding methods have been proposed for difficult winding.

As one example, a winding device has been proposed that has a fixed wire path in a winding cycle for winding a wire around a core and pulls out slack wire with a tensioner or the like.

Problems to be Solved by the Invention However, in the configuration using the above-mentioned tension, in addition to causing fatigue such as twisting and tying of the wire during the winding cycle, various guide functions are required to maintain the posture of the wire, which makes the device difficult to use. A complicated problem arose.

The purpose of this invention is to provide winding dimensions and a device that prevent fatigue of the wire without applying unnecessary external force to the wire during the winding cycle of winding the wire around the core, and that can be easily applied to other types of wire. do.

Means for Solving the Problems In order to achieve this object, the present invention includes the steps of: In order to wind a wire around a toroidal core having a hole shape, one end of the wire is inserted into the core hole from one side of the toroidal core; In a winding method that repeatedly draws out a wire protruding from the core hole, winds the drawn wire, applies tension, and inserts the tip of the wire into the piece hole of the toroidal core again, a gripping means is provided. grip the wire rod and insert the tip of the wire rod from one side of the core hole, and after insertion, grip the wire rod with a pull-out means and release the grip of the wire rod by the grip means, and then pull out the wire rod. The wire rod is moved linearly and pulled out a predetermined distance from the other side of the core hole, and then the wire rod is gripped again by the gripping means, and the wire rod is released from gripping by the pullout means, so that the wire rod is formed by a straight line and an arc. winding the tip of the wire through a path consisting of two mutually parallel straight lines and two circular arcs connecting both ends thereof;
Further, as the length of the wire decreases due to winding, the transfer distance of the straight portion of the route is sequentially decreased by a preset amount.

The winding device of the present invention also includes a gripping means for holding a toroidal core, a gripping means for gripping a wire, and inserting the tip of the wire into the core hole from one side of the toroidal core, and after inserting the wire, a gripping means for gripping the wire rod which has been pulled out a predetermined distance from the other side of the core hole; a pull-out means for linearly pulling the wire in a direction away from the other side of the wire rod, and after the wire is gripped again by the gripping means, the wire is released from gripping the wire; a transfer means for linearly moving the toroidal core from one side to the other side, the transfer means being formed of two mutually parallel straight lines and two circular arcs connecting the straight lines. It is configured so that it can be transported along a route, and the moving distance in the linear direction can be set arbitrarily.
The drawing means has a structure in which a moving distance in a linear direction can be arbitrarily set, and the transferring means and the drawing means are arranged so that the linear moving direction of the transferring means and the moving direction of the drawing means are parallel to each other. It is something.

The wire rod gripped by the gripping means faces the core hole at a constant distance in the vertical direction by the rotational movement of the gripping means, and is inserted by a linear movement in the direction of penetrating the core hole, The wire protruding from the core hole to the other side is pulled out a distance corresponding to the length of the wire by the linear movement of the drawing means in a direction penetrating the core hole. The gripping means is moved by the linear movement to a position a certain distance away from the drawing-out means, and grips the drawn-out wire. Next, after the wire held by the gripping means is cut by the cutting means at a position a predetermined distance away from the gripping means, the gripping means approaches the core by a predetermined distance by the linear movement, and further rotates the gripping means. The movement causes it to rise in a semicircular manner and is transported to a predetermined position. After being transferred to a predetermined position, the winding cycle of inserting the wire into the core hole is repeated again by the rotational movement of the gripping means. In the winding cycle, the wire is transported while being constantly gripped by either the gripping means or the pulling means, and the wire rod is moved in a direction penetrating the core hole of the transporting means of the gripping means and the transporting means of the pulling means. By changing the distance depending on the length of the wire to be drawn out, the wire can be wrapped around the core without causing fatigue due to twisting or knotting of the wire, and the simple device structure allows for easy adaptation to other types of wire. Become.

Example Examples will be described based on FIGS. 1 to 9.

FIG. 2 shows a video head according to an embodiment of the present invention, in which a wire 2 is passed through a toroidal core 1 having a microhole 100 of 0.25 mm x 0.3 mm.
Wrap 6 to 20 times on each side. Next, Figures 1 and 3
The schematic configuration of the device will be explained with reference to FIGS.

Configuration of the entire device: Figure 1 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 100 of the toroidal core 1 and the tip of the wire rod 2. Reference numeral 8 indicates a control device, and reference numeral 9 indicates an operation switch. The control device 8 is incorporated in the lower part of the main body 3, and the operation switch 9 is incorporated in the upper part of the main body 3.

Winding Mechanism Section: In FIG. 3, 5 is a winding mechanism section, 10 is a work holding section for fixing the toroidal core 1, and 11 is a rotation driving section of the work holding section 10, which reverses the toroidal core. 12 is an XY moving unit, and 13 is a pulse motor, one each attached to the X and Y axes of the XY moving unit 12, so that the work holding unit 10 can be moved to any position in the X direction or Y direction. It is fixed on the substrate 4. In addition, the work holding section 10
is fastened to the top surface of the XY moving section. 14 is a winding chuck for gripping the wire; 15 is a winding chuck rotating section; 16 is a pulse motor for rotating the winding chuck; and 17 is a fastening element for the winding chuck 14. The winding chuck 14 is an air chuck that is opened and closed by air, and is fastened to the rotating shaft of the winding chuck rotating section 15, but is positioned eccentrically by a certain amount. When the rotary shaft 15 is driven, the winding chuck 14 moves circularly with an eccentric radius. In addition, the rotation angle of the winding chuck can be freely set and operated using a pulse motor, and the structure allows for accurate stopping. 18 is a winding chuck vertical drive unit, 19 is a pulse motor for vertical drive, 20 is a moving block, 21 is a winding chuck front and rear drive unit, 22
23 is a moving block of the winding chuck front and rear drive section 21. A winding chuck rotating section 15 is fixed to the upper part of a moving block 20 of a winding chuck vertical drive section 18.
Further, the winding chuck vertical drive section 18 is driven by a pulse motor 19, so that it can be stopped at any vertical position with high accuracy. The winding chuck vertical drive section 18 is connected to the winding chuck horizontal drive section 21.
It is fixed to a moving block 23. The winding chuck horizontal drive section 21 is attached to the substrate 4 and is driven by a pulse motor 22, so that it can be stopped at any horizontal position with high accuracy. 24 is a wire threading chuck, 25 is a wire threading chuck vertical drive unit, 26 is a pulse motor, 27
is a moving block. The wire threading chuck 24 is an air chuck that is opened and closed by air, and is disposed coaxially with the center of the fine hole 100 of the toroidal core 1, and grips the wire passing through the fine hole 100. The moving block 27 of the wire threading chuck up and down drive section 25 moves up and down in the vertical direction parallel to the center of the fine hole 100 of the toroidal core 1, and the wire threading chuck 24 is fixed thereto. Further, the wire threading chuck vertical drive section 25 is attached to the board 4 and is driven by a pulse motor 26, so that it can be accurately stopped at any position in the vertical direction.

28 is a winding bobbin for supplying the wire rod 2;
Reference numeral 29 denotes a wire supply gripping/cutting device that grips the wire rod 2 and cuts it.

Cutter Device: In FIG. 3, 30 is a cutter device that cuts the wire 2 held by the wire threading chuck 24, and is fastened to the front of the front and rear portions 31 of the cutter. The cutter front and rear portions 31 are disposed above the wire threading chuck 24 and
It moves forward and backward in a direction perpendicular to the center of 00, and when it moves forward, it is in a positional relationship that can cut the wire 2 held by the wire threading chuck 24, and is fixed to the wire threading chuck vertical drive part 27. FIG. 4 shows the structure of the cutter device 30, in which a cylinder 33 is press-fitted into a main body 32, a piston 34 into which the cylinder 33 is slidably fitted, a piston return spring 35 are assembled, and an air inflow hole is installed. A cylinder end 36 having a diameter is screwed to the cylinder end 36. In addition, in the front of the main body 32, a pair of cutters 38 and a cutter stopper 39 are provided which rotate and intersect with the fulcrum pin 37 as a fulcrum.
are arranged. The tip of the piston 34 is tapered, and as the piston 34 moves forward, the cutter 3
8, the pair of cutters 38 rotate,
Cross, that is, cut the wire 2. Further, as the piston 34 retreats, the pair of cutters 38 are rotated and returned by the cutter return spring 40.

Tension Device: FIG. 5 shows a tension device, in which 41 is a tension roller, 42 is a tension arm, 43 is a motor, and 44 is an arm stopper. One end of the tension arm 42 is bent in a direction perpendicular to the wire 2 so that the tension roller 41 rotates, and the other end of the tension arm 42 is bent in a direction perpendicular to the wire 2.
It is fastened to the rotating shaft of the The rotation of the motor 43 is
Via the tension arm 42, the tension roller 41 swings so that the lower part of the toroidal core 1 does not come into contact with the toroidal core 1 and crosses the center of the hole in the toroidal core 1.
The tension arm 42 is stopped by the arm stopper 44 after absorbing the slack and transferring the wire 2 in the winding direction of the toroidal core 1 to form a winding curl. The tension force of this tension device can be adjusted by electrically controlling the torque of the motor 43.

Line supply device: Figure 6 shows the line supply device, as shown in Figure 3,
The wire rod 2 is supplied from the winding bobbin 28. The winding bobbin 28 is placed on a bobbin guide 45 fastened to the substrate 4, and is cylindrical and covered with an acrylic bobbin case 46. The wire 2 of the winding bobbin 28 passes through a nozzle 48 and a wire guide 49 attached to the center of the bobbin case upper lid 47, and then passes through a tension nozzle 51 attached to a wire supply bracket 50 and a wire supply tension arm 52. Then, wire supply gripping/cutting device 2
Reach 9. The wire supply gripping/cutting device 29 is
It has a gripping function and a cutting function for the wire rod 2, grips the wire rod 2 during winding, and cuts the wire rod 2 after winding is completed.

In the above configuration, first, a rough sequence of operations of this embodiment will be described.

(1) Supply and attach the toroidal core 1 to the workpiece holder 10.

(2) XY moving section 12 equipped with work holding section 10
, move it to the recognition position, recognize the hole position of the toroidal core 1 with the recognition TV camera 6,
Read and correct positional deviation.

(3) Move the winding chuck horizontal movement section 21 to the wire feeding gripping/cutting device 29, and grip and feed the wire 2 with the winding chuck 14.

(4) Wire rod 2 is placed at one winding position of toroidal core 1.
Wind the wire according to the required number of turns.

(5) The toroidal core 1 is reversed by the rotary drive unit 11 of the workpiece holding unit 10, and the required number of turns of the wire 2 is wound at the other winding position.

(6) Take out toroidal core 1.

The series of operations is completed, and the winding method in this embodiment will be explained in detail based on FIGS. 3 to 9. FIG. 7 shows the operation of the winding chuck 14 continuously. Regarding the main states of the winding chuck 14, A is the recognition position, B is the wire threading preparation position, C is the wire threading position, Regrasp B and set it as the cutting position. The winding chuck 14 passes through states A, B, C, and D and completes one winding. At the recognition position A, the tip of the wire 2 held by the winding chuck 14 is read by a recognition TV camera, the amount of positional deviation is corrected by operating the XY moving part 12 equipped with the work holding part 10, and then the winding chuck is 14 by 180 degrees using the winding chuck rotating section 15, and move it to the wire threading preparation position B.
reach. A pulse motor 16 for rotating the winding chuck is used to ensure that the rotational movement stops at the correct position every time.
Drive with. When rotated 180°, the winding chuck 14
The tip of the wire rod 2 held by the wire rod 2 is directed downward in the vertical direction, and coincides with the center of the microhole 100 of the toroidal core 1 or the vertical line at the target position through which the wire rod 2 is passed. Next, the winding chuck vertical drive section 1 moves the winding chuck rotating section 15 in the vertical direction.
At step 8, the winding chuck 14 is lowered to pass the tip of the wire 2 through the minute hole 100, and the winding chuck 14 reaches the wire passing position C. At the wire threading position C, as shown in FIG. 8, the tip of the wire 2 passes through the fine hole 100 of the toroidal core 1 and protrudes below the toroidal core 1 by a length that can be grasped by the wire threading chuck 24, and the wire The threading chuck 24 grips the tip of the wire rod 2, and the winding chuck 14 is opened to release the wire rod 2.
release. Next, the wire threading chuck 24 grips the wire 2 and is vertically lowered by a preset amount by the wire threading chuck up and down drive section 25. The wire threading chuck vertical drive section 25 is driven by a pulse motor 26 in order to freely set the amount of movement and to move it accurately. When the wire threading chuck vertical drive unit 25 is lowered, the wire 2 held by the wire threading chuck 24 is in a state with almost no slack in the vertical direction relative to the fine hole 100 of the toroidal core 1. Next, the winding chuck 14, which is not holding the wire 2 and is in an open state, is moved back to a position where it does not interfere with the wire 2 and the toroidal core 1 by the winding chuck front and rear drive unit 53, and the winding chuck 14 is moved up and down. After the winding chuck 14 is lowered in the vertical direction by a preset amount by the drive unit 18 and the winding chuck 14 is advanced to a position where the wire rod 2 can be gripped by the winding chuck front and rear drive unit 53, the winding chuck 14 is lowered by a predetermined amount. is closed, the wire rod 2 is gripped, and the gripping/cutting position D is reached. Re-understand/
At the cutting position D, as shown in FIG. 7, the winding chuck 14 grips the upper portion of the threading chuck 24 for a certain length. Next, cutter front and rear 31
Then, the cutter device 30 is advanced to cut the wire rod 2. As shown in FIG. 9, the cutter device 30 cuts the wire between the winding chuck 14 and the wire threading chuck.
The wire rod is cut to the minimum length necessary for passing the wire rod 2 through the toroidal core 1, and moreover, it is always cut so that the length from the winding chuck 14 is constant.
One of the cut wire rods 2 is held by the winding chuck 14, and the other is held by the wire threading chuck 24. The wire rod 2 held by the wire threading chuck 24 is discarded as chips.

Next, as described above at the regrasping/cutting position D,
The winding chuck 14, which has a constant length from the winding chuck 14 to the tip of the wire rod 2 and grips the unbent wire 2, is rotated vertically by the winding chuck vertical drive section 18 and the winding chuck rotation drive section 15. The robot rotates while ascending in the direction toward the recognition position A. When the winding chuck rises and rotates from the regripping/cutting position D to the recognition position A, the tension device shown in FIG.
Moreover, the wire rod 2 can be wound without being damaged. When the winding chuck 14 rises and rotates from the regrasping/cutting position D to the recognition position A,
The first fixed amount is simply raised in the vertical direction without rotation, and then the raising and rotation are performed at the same time. Due to the initial rise of a certain amount, the wire rod 2 becomes slack, but
The slack is absorbed by the rotation of the tension roller 41, and the tension is applied.

The tension roller 41 does not rotate beyond the rotation angle set by the arm stopper 44, and when the winding chuck 14 is raised and rotated at the same time, it does not absorb the slack of the wire 2, and therefore Although the tension no longer works, the wire 2 once wound around the toroidal core 1 does not slacken. In this way, wire rod 2 is attached to toroidal core 1.
The operation of winding one turn is completed. This can be achieved by repeating the above operation according to the required number, but as the winding progresses, the wire 2 is wound around the toroidal core 1, and the tip of the wire 2 is cut and a certain length is discarded. The length of the wire rod 2 is becoming shorter. Therefore, the length of the wire 2, which becomes shorter each time one turn of winding progresses, is calculated, and the amount of upward and downward movement of the winding chuck vertical drive unit 18 and wire threading chuck drive unit 25 is set according to the number of turns. are doing.

Effects of the Invention The wire winding method and device of the present invention are such that the wire is constantly gripped by either the gripping means or the drawing means, while the wire is always gripped by the path formed by two mutually parallel straight lines and two circular arcs connecting both ends thereof. Since the wire is transported in the same state, winding can be done in a natural state without causing excessive fatigue to the wire such as twisting of the wire, and since the wire is inserted using a gripping means, a high insertion success rate can be obtained and it is easy to do. The structure has the advantage of being easily adaptable to other types.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a winding device according to an embodiment of the present invention, FIG. 2 a is a plan view of a toroidal core to be wound, FIG. 2 b is a side view of the same, and FIG. FIG. 4 is a sectional view of the cutter device of the winding device, FIG. 5 is a perspective view of the tension device of the winding device, and FIG. 6 is a perspective view of the winding device of the same winding device. A front view of the wire supply device, FIG. 7 is an explanatory diagram showing the operation of the winding chuck of the same winding device, FIG. 8 is a perspective view showing the winding operation of the same winding device, and FIG. 9 is an explanatory diagram showing the operation of the winding chuck of the same winding device. FIG. 10 is a perspective view of a toroidal winding machine intended for winding wire into a hollow hole. 1... Toroidal core, 2... Wire rod, 10...
holding means, 14...gripping means, 20, 21,
22, 23...Moving means, 24...Drawing means,
30...Cutting means.

Claims (1)

[Claims] 1. In order to wind a wire around a toroidal core having a hole shape, one end of the wire is inserted into the core hole from one side of the toroidal core, and the wire protruding from the core hole is pulled out. In a winding method in which the drawn wire is wound, tension is applied, and the tip of the wire is repeatedly inserted into the core hole of the toroidal core, the tip of the wire is held by a gripping means. is inserted into the core hole from one side, and after insertion, the wire is gripped by a pull-out means, and the grip of the wire is released from the grip means, and the pull-out means is linearly moved to pull the wire into the core hole. by pulling out a predetermined distance from the other side of the wire, and then gripping the wire again by the gripping means, releasing the grip of the wire by the pulling-out means, and returning the wire to the original position through a path formed by a straight line and an arc. , the tip of the wire is wound through a path consisting of two mutually parallel straight lines and two circular arcs connecting both ends thereof, and as the length of the wire decreases due to winding, the straight portion of the path is A winding method characterized in that the transfer distance of the wire is sequentially reduced by a preset amount. 2. The wire winding method according to claim 1, wherein the wire pulled out by the pulling means is gripped by the gripping means again, and then the wire is cut at a position a predetermined distance away from the gripping means. 3. A holding means for holding the toroidal core, holding a wire, and inserting the tip of the wire into the core hole from one side of the toroidal core,
After insertion, a gripping means releases the grip on the wire and further grips the wire pulled out a predetermined distance from the other side of the core hole, and a grip means grips the wire inserted into the core hole and releases the grip of the gripping means. After that, the wire is pulled out linearly in a direction away from the other side of the core hole, and after the wire is gripped again by the gripping means, a pulling means releases the grip on the wire, and the gripping means is moved at a predetermined rotation radius. a transfer means for rotating and linearly moving the toroidal core from one side to the other; The drawing device is configured such that the moving distance in the linear direction can be set arbitrarily, and the moving distance in the linear direction can be set arbitrarily, and A winding device characterized in that the transfer means and the draw-out means are arranged so that the linear transfer direction of the means and the transfer direction of the draw-out means are parallel to each other.