JPS5948910A - Winding method and winding device - Google Patents

Abstract

PURPOSE:To automate winding work by vertically turning over a pipe sucking a thin electric wire and inserting the electric wire when the tip of the electric wire is inserted into a small hole formed to the toroidal core, while the core is turned, the tip of the electric wire is inserted into the small hole again and the process is repeated and the electric wire is wound. CONSTITUTION:The suction pipe 6 is adsorbed to the lower surface of the hole 2 formed to the toroidal core 1, the tip of the electric wire 4 faced to the upper surface of the hole 2 is drawn into the hole 2 through vacuum adsorption, and the pipe 6 is separated downward while being sucked. The pipe 6 is turned over under the state in which the tip of the electric wire 4 is drawn in and positioned at the upper surface of the core 1, and the electric wire 4 is gripped by the gripping surface 8 of a gripping pawl 7 under the state, and cut by a cutter 9 in anticipation of necessary length. The gripping pawl 7 is turned over and positioned at the lower surface of the core 1, the cut end of the electric wire 1 is faced to the hole 2, the electric wire is sucked by the pipe 6 again and passed in the hole 2, and the process is repeated and the electric wire is wound for desired times while turning the core 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for winding a hollow wire around a small hole in a toroidal core.

For example, the head of a video tape recorder is circular in shape and has a plurality of cores on its outer periphery. The core is provided with a hole for small wire windings.

A thin electric spear with a diameter of about 0.03 mm is inserted into this hole.
Power: Wrapped around. This wire converts magnetic signals into electrical signals when tracing magnetic tape.

Conventionally, winding of the electric wire was carried out manually while viewing the holes in the core under optical magnification. Due to this manual process, production efficiency is low and mass production is difficult, making the products extremely expensive. Under these circumstances, automation of this winding process is desired.

It is an object of the present invention to organically combine a mechanical external movable part and a pneumatic electric wire pushing means, and to automate the winding process.

Based on the above object, the present invention passes an electric wire through a hole in a core by air flow caused by vacuum suction, and then the tip of the electric wire ψ;
1 is positioned while straightening it, and its tip is guided into the hole of the core.

EMBODIMENT OF THE INVENTION Hereinafter, the winding method and winding device of the present invention will be specifically explained based on an embodiment shown in the drawings.

First, FIG. 1 shows a core 1 of this type.

This core 1 is a plate-shaped body made of ferrite with a thickness of about 0.4 m, and is molded to a size of about 2 to 3 tJrm in length and width. A hole 2 for a winding of about 0.3 tone or less is formed near the trace surface 3 of this core l, and a diameter of 0.3 mm is formed at the edge of the corresponding hole 2. A flexible electric wire 4 of about Q3 mm is wound around it. The number of turns of 40 wires varies depending on the product, but it is about 5 to 15 turns for each side. As shown in FIG. 2, this toroidal core 1 is attached to the tip of a core base 5 by adhesive or the like, and is attached to the outer peripheral edge of a head (not shown) by this core base 5.

Now, FIG. 3 shows the process order of the wire winding method of the present invention. This winding method consists of an insertion process A, a misfeeding process, a positioning process C, and a guiding process. Bye ij! , 'j determining step C1 and the eighth step C1 correspond to the guiding step.

In the insertion process A, the end of the lightning wire 4 of a predetermined length (
As shown in FIG. 4, the winding start end) is guided from one side of the core 1 to near the hole 2, and then the suction vibro approaches the center 111 of the hole 2 from the other side of the core 1, Closely adheres to its outer periphery. In this state, the suction vibro performs vacuum suction to create an air flow in the hole 2 in the direction in which the electric wire 4 is inserted. The end of one electric wire 4 is drawn into this air flow, and the electric wire 4
It also passes through hole 2 and reaches the internal FC of the suction vibro.

During this suction, an air flow entering the hole 2 from the periphery is formed on one side of the core 1, so the end of the electric conductor m4 and I only need to be located near the hole 2, and accurate positioning is difficult. , not particularly required. In this way, one end of the wire 4 becomes
The airflow caused by vacuum suction causes it to pass through the holes 2 in the core 1 .

At the transfer step B, the suction vibro retreats like a water droplet in FIG. The winding of core l causes it to be transferred in the direction. The center of rotation at this time is core 1
After the reversal, the suction vibro moves slightly upward and draws the tip of the electric wire 4 into the interior by about s cm. During the transfer process B, vacuum suction is also performed. In the next positioning process C, the pair of gripping claws 7 move to the lower end position of the suction vibrator, and the V-shaped gripping surface 8 ( (see FIGS. 11 and 12) to hold the tip of the electric wire 4 in position, and at the same time, use the cutter 9 to
A pair of gripping claws 7 for cutting off the tip of the electric wire 4 are
Since the electric wire 4 is held above the center of the hole 2, in this state the tip of the electric wire 4 is straightened and accurately positioned. Further, when the electric wire 4 is being drawn into the suction vibro, the tip portion of the electric wire 4 tends to be bent in a complicated manner due to vibrations during suction. However, since the cutter 9 cuts off its tip, the cut end of the g-line 4 is at a position ff? above the center line of the hole 2. 7'. In addition,
The predetermined length of the wire 4 is set to the length required for winding plus the length to be cut off.

In the final guiding step, the pair of gripping claws 7 are moved downward while being turned upside down and orange, so that the tip of the frost gland 4 on the cut side faces the position of the hole 2.

In this state, the suction vibro returns to the other side of the core 1, that is, below, and starts vacuum suction again.

In this way, the insertion process A can be started again. Of course, at this time, the pair of gripping claws 7 release the grip on the tip of the electric wire 4 (W). Also, if necessary, a pair of feed rollers 10 are provided to feed the electric wire 4 in the direction of the hole 2. The electric current l1li+4 is wound around the core 1 through the hole 2 in the core 1.

The above series of steps is repeated 11 times corresponding to the number of turns of the electric wire 4.

The above wire winding method has the following unique effects.

In the insertion process A, the airflow flowing into the hole 2 pushes the end of the wire 4 from one side of the core 1 to the other side, causing a thunderstorm! No particular positioning of the ends of 4 is required. 'Also, in the transfer process B, the suction tube 6 is an electric wire,
Since the electric wire 4 is sucked and moved from the other side of the core 1 to one side in a state where it can be pulled out, a special loose clamp device for gripping the electric wire 4 is not required. Moreover, in the positioning step C, the cutter 9 cuts off the bent part of the tip of the wire 4, so the cut end (insertion end) of the wire 4 does not face in an arbitrary direction and always stays in the hole 2 (E, +tJ). Since it is located at the top, the insertion of the electric wire 4 into the hole 2 is standardized.
%';/) Each pair of gripping claws 7 move forward and backward, so that the electric a
Grasp 4 while accurately positioning the Ql opening side tip of 4.
Since it is S-, no particular means for determining the position 11'l of the tip end portion of the electric wire 4 is required. Therefore, '1'! 4σ)
Winding is faster and smoother than by hand.

Next, FIG. 9 to FIG. 12 show a winding device 11 based on the above winding method. Q) The width S device 11 includes, in addition to a suction vibro, a pair of gripping claws 7, and a cutter 9, a holder 12, a transfer device 13, and a guide device [14f]. The holder 12 is attached to the 1 m surface of the guide device 14, supports the core 1 on its upper surface, and is detachably fixed at a fixed position from an elastic holding plate 15. The transfer device 1-13 moves the suction vibro in the vertical direction while reversing the suction vibro. I support it. The rotation 11 black 17 is fully driven by the drive mechanism 19, rotates 180 degrees, and turns the suction vibro upside down.The suction vibro is slidably attached to the arm 18 by a slider 20, and this slider 20 is arm 1
It is in a relationship that it is driven by a drive unit 21 and a drive iron 22 that are attached to the tip of the shaft 8. Of course, this suction) (the eve 6 is connected to a vacuum source 24 by a flexible tube 23, and the guide device '14 supports a pair of gripping claws 7 by a reversing shaft 25. This reversing shaft 25 is Driven by the drive mechanism 26+7r, 18
It rotates 0 degrees and is movable up and down and back and forth. A head 27 is attached to the tip of the reversing shaft 25, and a pair of gripping claws 7 are supported by a guide shaft 28 of the head 27 so as to be movable forward and backward. The driving source for the pair of gripping claws 7 is
Although not shown, this is carried out using, for example, an electromagnetic plunger. The gripping claws 7 have a comb-teeth shape, and have a V shape on the opposite surface.
A letter-shaped gripping surface 8 is formed. The pair of gripping claws 7 may theoretically be provided in a number of - as shown in FIGS. 7 and 8, but in order to lengthen the straightening length of the electric wire 4, a plurality of the gripping claws 7 are provided in the vertical direction. Further, a pair of feed rollers 10 are rotatably attached to the upper portion of the gripping claws 7. This feed roller 10 is configured to be driven by a built-in motor (not shown).

Note that the cutter 9 is fixed to the upper surface of one of the gripping claws 7 before it is reversed.

Next, a series of operations of the winding spool device 11 will be explained. Initially, the electric wire 4 is fed in only the required length, and its tip portion is exposed to the inside of the hole 2 from one side of the core 1. The electric wire 4 is fed out using a known length. Next, the suction vibro d is located at the other side of the core 1, that is, the lower direction 11'j, and in contact with the lower surface of the core 1, vacuum suction is performed by the air flow from the vacuum song 24, and the city, ifi! i! 4 through hole 2I/c and drawn into the inside (insertion step A). Subsequently, the drive mechanism 19 of the transfer device 13 rotates the rotating shaft 17 by 180 degrees, and moves the suction vibro above the core 1 while inverting it upside down. During this movement process or after rotation, the drive unit 2
1, in order to move the slider 20 in the direction away from the rotation 1q117, the suction vibro sucks and holds the tip of the electric wire 4 a little at the upper position (transfer step B). Subsequently, the reversing shaft 25 moves forward and stops at a fixed position, and then the pair of gripping claws 7 approach each other. At this time, the opposing gripping surfaces 8 guide the line 1B and the line 4 toward the center on an inclined surface, Clamp the electric wire 4 to determine its position. At this time, the cutter 9 uses the electric iK! Cut off the tip of 4 (1') (positioning step C). After that, the reversing shafts 25, 18
Rotate by 0 degrees, position the feed roller 10 that was at the bottom upward, and guide the cut end of the wire 4 to the position of the hole 2 while turning the cut end of the wire 4 downward (guiding step D)
. During this time, the suction vibro has returned to its original lower position and is ready for the next suction. At the same time that the suction vibro starts suctioning the wire, the pair of gripping claws 7 move back slightly and remove the electric wire! Release the constraint of 4. At the same time, the feed roller 10 feeds the electric wire 4 in the direction of the hole 2, so that the electric wire a4 enters the inside of the suction vibro again through the hole 2 of the core 1. In this way, wire 4
One winding of is completed.

By repeating the above operations, the electric wire 4 is wound around the hole 2 of the core 1 by a predetermined number of times. As the winding progresses, the length of the electric wire 4 becomes shorter, and accordingly, the drive unit 21 moves the slider 20 in the direction of the rotating shaft 17. For this reason, when the suction vibro is in the upper position, it always has a required length of about 5 cm)
Only the electric wire 4 will be inhaled.

Note that the above series of operations can be controlled by connecting the limit switch and the sequence circuit.

In the winding device 11, the suction vibrator and the pair of gripping claws 7 are easily rotated. 7K, and these controls can be performed by simple sequence control, and since no special means for controlling the positive mM fx position is required, the $F & construction of the device is simply an illusion, and it is also a waste of money. Line equipment can be provided.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the core, Fig. 2 is a plan view of the core base and core, Part 3 is a process sequence diagram of the winding method, Figs. 4 to 8 are explanatory diagrams of the winding method, Part 9 10 is a front view of the winding device, FIG. 10 is a surface view of the head in the reverse rotation state, and FIGS. 11 and 12 are plan views of a pair of gripping claws. A... Pushing process, B... Transfer process, C... Positioning process, D... Guide process, 1... Core,
2... Hole, 4... Electric wire, 6... Suction pipe, 7... Gripping claw, 8... Gripping surface, 9... Cutter, 11... Winding device, 12... ·holder,
13... Transfer device, 14... Guide device, 1
7... Rotating shaft, 21... Drive unit, 24...
・Vacuum source, 25... Inversion axis. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] The end of the electric wire is guided from one side of the toroidal core to the vicinity of the hole in the core, and vacuum suction is applied from the other side of the core using a suction pipe to insert the electric wire into the hole. There is an insertion process in which the wire is inserted into the hole by creating an air flow, and after this insertion process, the suction pipe is rotated from the other side of the core to one side to wrap the wire around the core. After this transfer step, the end of the wire is grasped in a positioning state, and at the same time, the tip of the wire is cut off. After this positioning step, the tip of the wire is cut on the i side. A winding method characterized by a guiding step and a winding leading close to the hole on one side of the core. A holder that supports a toroidal core in a fixed position, a suction pipe that can be attached to and separated from a hole in the core on the other side of the core and connected to a vacuum source, and a suction pipe that can be connected from the other side of the core to one side. a transfer device that moves the winding of the wire in one direction while reversing the winding direction; a pair of gripping claws that grip the wire while positioning it on one side of the core; The winding is characterized by comprising a cutter for cutting, a guide device for guiding the cutting end of the wire from one side of the core to near the hole. Line equipment Eg. 3. The winding device according to claim 2, wherein the opposing surfaces of the pair of gripping claws form a V-shaped gripping surface. 1. The @ wire device according to claim 2 or 3 of the scope of patent n'l'J, characterized in that a pair of gripping claws are movable back and forth, and a cutter is attached to one of the gripping claws.