JPS59195815A - Winding apparatus - Google Patents

Abstract

PURPOSE:To quickly and automatically realize the winding of coil by inserting a wire lead into a hole of core and into an absorbing pipe by the air flow caused by vacuum absorption, positioning the wire while the end point of lead wire is corrected to the straight wire and then guiding the end point thereof into the hole of core. CONSTITUTION:The rotation center of absorbing pipe 6 is set near the hole 2 of core 1, the absorbing pipe 6 moves rather upward after reverse rotation and the front end of lead wire 4 is extended into the inside only for about 5cm. Even during this transfer process, the vacuum absorption is carried out. Moreover, during this process, a blowing pipe 37 generates the wind in the forward from the blowing port 38. Thereby, a looped free lead wire 4 is caused to run in the peripheral space where there is no any mechanical parts and is located in the direction where the lead wire does not mingle with mechanical parts. In the next positioning process, a pair of holding pawls 7 moves to the lower end position of absorbing pipe 6. The end point of lead wire 4 is held in the positioning condition by the V-shaped holding surface 8 and simultaneously the end point of lead wire 4 is cut by the cutter 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically winding thin electrical wires around small holes in a toroidal core.

For example, the head of a video tape recorder is disk-shaped and has a plurality of cores on its outer periphery. A hole for winding a small electric wire is formed in the core, and a thin electric wire with a diameter of about 0.03 inch is wound around this hole.

This electric wire converts the magnetic recording signal of the magnetic tape into an electric signal when tracing the magnetic tape.

Conventionally, this wire winding work has been done manually while optically magnifying the hole in the core. This manual process is inefficient and difficult to mass produce, making the products extremely expensive. Under these circumstances, automation of this winding work is desired.

An object of the present invention is to organically combine a mechanical movable part and a pneumatic wire insertion means to speed up and automate the winding operation.

Based on the above object, the present invention passes an electric wire through a hole in a core and a suction pipe using an air flow generated by vacuum suction, then positions the electric wire while straightening the tip of the electric wire, and places the tip of the electric wire in the core. I'm trying to guide it to the hole. In particular, the present invention, when winding the wire around the hole in the core, sends an air flow to the wire in a free state at the middle portion, thereby bending the wire in the direction of a predetermined space, and encircling the wire during winding. Avoid getting caught in mechanical parts, etc.

Hereinafter, the present invention will be specifically explained based on embodiments 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 and has a thickness of about 0.4 nm, and is molded to a size of about 2 to 311 mm in length and width. A winding hole 2 of about 0.3 m or less is formed near the trace surface 3 of this core 1, and a flexible electric wire 4 of about 0.03 mm in diameter is inserted at both end edges corresponding to this hole 2.
is wrapped around it. The number of turns of this electric wire 4 varies depending on the product, but is usually about 5 to 15 turns on both the left and right sides. 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 winding method which is the premise of the winding device 11 of the present invention. This winding method consists of an insertion process A, a transfer process B, a positioning process C, and a guiding process. Figure 4 shows the insertion process A, Figure 5,
6 and 7 show the transfer step B, FIG. 8 shows the positioning step C, and the final FIG. 9 shows the guiding step.

First, in the insertion process A, the winding start end of the wire 4 of a predetermined length is guided from one side of the core 1 to near the hole 2, as shown in FIG. 4, and then the tip of the suction vibro is inserted into the core. 1 and approaches the center of the hole 2 from the other side and comes into close contact with 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. This air flow draws in the end of the electric wire 4, passes through the hole 2 with the electric wire 4, and reaches the interior of the suction vibro. During this suction, an air flow is formed on one side of the core 1 that enters the hole 2 from the surroundings, so the end of the wire 4 only needs to be located near the hole 2, and accurate positioning is difficult. , is not particularly required.In this way, one end of the wire 4 passes through the hole 2 of the core 1 due to the airflow caused by the vacuum suction.

In the subsequent transfer step B, the suction vibro moves back while frictionally holding the electric wire 4 by a pair of holders 30 such as rubber, as shown in FIG.
The electric wire 4 is moved in the direction in which the core 1 is wound. At this time, the pair of holders 30 apply a constant tension to the electric wire 4 and wind the electric wire 4 around the hole 2 of the core 1 while sliding frictionally, so that the electric wire 4 is straightened into a straight line. Thus, even the ridgeline portion of the core 1 is wound in an orderly manner along the surface. Note that the rotation center of the suction vibro at this time is set near the hole 2 of the core 1, but after the suction vibro is turned over, it moves slightly upward and inserts the tip of the electric wire 4 about 5 cm inside. It's drawing me in. Vacuum suction is also performed during this transfer process B. Further, during the process, the blower pipe 37 generates wind in the forward direction from its outlet 38. Therefore, the loop-shaped free electric wire 4 is flown into a space where there are no surrounding mechanical parts, and is positioned in a direction where it will not be entangled with mechanical parts.

In the next positioning process C, as shown in FIG.
Its V-shaped gripping surface 8 (Figures 13 and 14)
At the same time, the tip of the electric wire 4 is held in a positioned state, and at the same time, the tip of the electric wire 4 is cut off by a wall cutter 9. The pair of gripping claws 7 grip the electric wire 4 on the center line of the hole 2, and in this state, the tip of the electric wire 4 is accurately positioned while being straightened into a straight line. Also, when the tip of the electric wire 4 is drawn into the suction vibro,
There is a tendency for it to bend in a complicated manner due to vibrations during suction.

However, since the cutter 9 cuts off the tip of the wire 4,
The tip, or cut portion, is inside hole 2 Ib! Accurately positioned above the fountain. Note that the predetermined length of the electric wire 4 is
The length is set to be the length &f required for winding plus the length to be cut off.

In the final guiding step, as shown in FIG. 9, the pair of gripping claws 7 are turned upside down and moved downward.
The end portion of the cut side of the electric wire 4 is made to face the position of the hole 2. In this state, the suction vibro returns to the other side of the core I, that is, below, and starts vacuum suction again. In this way, the insertion process A is started again. Of course, at this time, the pair of gripping claws 7 release the tip portion of the electric wire 4 from being held. Further, a pair of feed rollers 1o is provided as required.

This pair of feed rollers 10 sends out the electric wire 4 in the direction of the hole 2. In this way, the electric wire 4 is wound around the core 1 through the hole 2 of the core 1.

The above series of steps are continuously repeated one after another a number of times corresponding to the number of turns of the electric wire 4.

The above winding method is advantageous in the following points for mechanizing the winding work. That is, in the insertion step A, since the airflow flowing into the hole 2 causes the end of the electric wire 4 to flow from one side of the core 1 to the other side, no particular positioning is required for the insertion end of the electric wire 4.

In addition, in the transfer step B, the airflow blows the middle part of the electric wire 4 toward the play space, so that the electric wire 4 is not tangled or caught, and the holder 30 slides the electric wire 4 and causes friction. Since the electric wire 4 is sandwiched between the wires, a predetermined tension is applied to the electric wire 4, and the curl of the electric wire 40 is corrected.Furthermore, in the positioning process C, the cutter 9 cuts off the bent part of the tip of the electric wire 4, so the cut end of the electric wire 4 is cut off. Since the end of the side, that is, the insertion end does not face in an arbitrary direction, and is located exactly on the center line of the hole 2, the insertion of the electric wire 4 into the hole 2 is standardized, and the pair of wires
Since the gripping claws 7 move back and forth to precisely position and grip the cut end portion of the electric wire 4, no particular means for positioning the tip portion of the electric wire 4 is required. Therefore, winding of the electric wire 4 can be performed mechanically and smoothly more quickly than manually.

Next, FIGS. 9 to 17i show a winding device 11 of the present invention based on the above winding method. This winding device 1
1 is equipped with a holder 12, a transfer device 13, and a guide device 14 in addition to the above-mentioned suction vibro, a pair of gripping claws 7, a pair of grippers 9, a pair of holders 30, and a blowing pipe 37.

The holder 12 is attached to the side surface of the guide device 14, supports the core 1 on its upper surface, and removably fixes the core 1 in a fixed position with an elastic presser plate 15.

Further, the transfer device 13, while reversing the suction vibro,
The electric wire 4 is wound in such a way that it is moved in the direction, and is mounted on a base 16, and the suction vibro is supported in the vertical direction by a rotating shaft 17 and an arm 18. The rotating shaft 17 is driven by a drive mechanism 19 to turn the suction vibro upside down by 180 degrees. The suction vibro is equipped with a tapered suction port 4o at the tip, and is slidably attached to the arm 18 by a slider 20, and the slider 2o is connected to a drive unit 21 attached to the tip of the arm 18. and is driven by the drive rod 22. Of course, this suction vibro is connected to a vacuum source 24 through a flexible tube 23 at its rear end.

Further, the blower pipe 37 has an inverted U-shape and is attached to the guide device 14 so as to straddle the reversing shaft 25 .

The guide device 14 supports the pair of gripping claws 7 by a reversing shaft 25. The reversing shaft 25 is driven by a drive mechanism 26, and is capable of rotating 180 degrees and moving vertically and longitudinally.

A head 27 is attached to the tip of the reversing shaft 25, and a pair of gripping claws 7 are supported on a guide shaft 28 of the head 27 so as to be movable forward and backward. Although not shown, the driving source for the pair of gripping claws 7 is, for example, an electromagnetic plunger. As shown in FIG. 12, the pair of gripping claws 7 have a comb-teeth shape, and their opposing surfaces form a V-shaped gripping surface 8.

Theoretically, the pair of gripping claws 7 may be provided in number of - as shown in FIGS. It is set in the direction. In addition, a pair of feed rollers 1 are provided above the gripping claws 7.
0 is rotatably mounted. This feed roller 10
can be driven in the direction of the arrow 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 the gripping claw 7 is turned over. In order to prevent the electric wire 4 from getting caught on the front and side surfaces of the head 27, a cover 39 with a smooth curved surface and split at the center is attached.

Furthermore, as shown in FIGS. 15 to 17, a leaf spring ring 35 is slidably provided on the small diameter portion of the upper end of the suction vibro. This leaf spring ring 35 is always urged toward the distal end of the suction vibro by a compression spring 36 and comes into contact with this guide collar stopper 32 . The pair of leaf springs 31 attached to the leaf spring ring 35 by the mounting screws 33 are inserted into the groove 32 of the guide collar stopper 32.
It is located inside 3 and moves under the guidance of it. A holder 30 is fixed to each of the surfaces of the leaf springs 31 that face the tips thereof. This holder 30 is made of a flexible material such as rubber, which has a large coefficient of friction. Note that the contact portion 35a of the leaf spring ring 35 corresponds to the stopper 34. This stopper 34 is fixed to the holder 12 or the like.

Next, a series of operations of the winding device 11 will be explained. 1 First, the electric wire 4 is fed to a 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 by a known length measuring and supplying means. The suction vibro is then located on the other side or below the core 1 and is moved towards the core 1 from there. In order to stop the movement of the leaf spring ring 35 by the stopper 34 hitting the abutment part 35a on the way, the pair of leaf springs 31
is in an open state along the curved surface of the tip of the suction vibro, as shown in FIG. After that, the suction vibro continues to rise, so the suction port 40 is brought into close contact with the hole 2 on the bottom surface of the core 1 with its upper end surface in a state where there is nothing there, and vacuum suction is performed using the air flow from the vacuum source 24. 4 through the hole 2 and drawn into the suction vibro (insertion step A).

Next, the suction vibrator 6 descends below the core 1.

At this time, since the contact portion 35a separates from the striker 7 bar 34, the leaf spring ring 35 rises under the elasticity of the compression spring 36, so the holder 30 pulls the electric wire 4, which has been attracted 2, to the leaf spring 31. Grip by elasticity. Subsequently, the drive mechanism 19 of the transfer device 13 moves the rotating shaft 17 to 18
While rotating the axis 0 degrees and reversing the suction vibro vertically,
Move the suction vibro above the core 1. When moving, the blower pipe 37 blows out air from its outlet 38,
The flow blows the electric wire 4 in a downward direction of about 45 degrees, thereby preventing the electric wire 4 from wrapping around surrounding mechanical parts.

During this movement process, the pair of holders 30 frictionally move the electric wire 4
The electric wire 4 is held and wound while applying a constant tension, and the electric wire 4 is straightened. During or after the rotation of the suction vibro, the drive unit 21 moves the slider 20 away from the rotating shaft 17, so the suction vibro holds the pair of holders while slightly sucking the tip of the electric wire 4 in the upper position. The body 30 is held (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 electric wire 4 toward the center on the slope, and lightly clamp and position the electric wire 4. At this time, the cutter 9 cuts off the tip of the electric wire 4 (positioning step C).

Thereafter, the reversing shaft 25 moves the feed roller 10, which was at the bottom of the 180-degree rotation, to the upper position, and while the cut end of the wire 4 is facing downward, the cut end of the wire 4, that is, the insertion end, is moved to the hole 2 position. Guide (guidance 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 as the suction vibro starts vacuum suction, the pair of gripping claws 7 move back slightly to release the restraint on the electric wire 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 4 enters the inside of the suction vibro again through the hole 2 of the core 1. In this way, one winding of the electric wire 4 is completed.

By repeating the above operations, the electric wire 4 is wound around the hole 2 of the core 1 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 sucks in only the electric wire 4 of the length required for 4 (approximately 5 cm).

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

Further, in the above embodiment, the blow pipe 37 has an inverted U-shape, but the blow pipe 37 may have an oval shape, for example.
It can also be configured by dividing into a plurality of parts.

In the present invention, since the loop-shaped electric wire is oriented by the air flow during transportation, the electric wire can be wrapped in a predetermined space and not caught on surrounding mechanical parts.
Furthermore, since there is no entanglement, m-core winding can be performed smoothly and at high speed.

[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, Fig. 3 is a process sequence diagram of the winding method, Figs. 4 to 9 are explanatory diagrams of the winding method, and Fig. 10 is a plan view of the core. The figure is a front view of the winding device of the present invention, FIG. 11 is a front view of the head portion, FIG. 12 is a front view of the head portion with the cover removed, and FIGS. 13 and 14 are the gripping claws. A plan view, FIGS. 15 and 16 are side views of the suction pipe, and FIG. 17 is a sectional view taken along the line B--B in FIG. 16. A... Insertion 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 1.12 ... holder,
13... Transfer device 14... Guide device, 17... Rotating shaft,
21... Drive unit, 24... Vacuum source, 25... Reversing axis, 3°... Gripping claw, 31... Leaf spring, 32... Guide collar stopper, 34... Stopper, 36... Compression spring, 37・・Blower pipe, 38・・Air outlet, 39・
·cover. 6 Figure 7 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 8 Figure Figure 9 Figure 10 Figure 16 Figure 11 Figure 12 Figure 13 Figure 8 Figure 15

Claims (2)

[Claims] (1) A holder that supports a toroidal core in a fixed position, a suction pipe that can be brought into contact with and separated from the core on the other side of the core and connected to a vacuum source, and a suction pipe that can be connected to one side from the other side of the core. A transfer device that moves the winding of the wire in the direction while flipping it to the side, a blower pipe installed on one side of the transfer device that blows the wire being transferred in the direction of a predetermined space, and one side of the core. A pair of gripping claws that grip the electric wire in a positioning state, a cassock provided on one side of the core that cuts off the tip of the wire, and a cassock that cuts off the tip of the wire while it is being held without reversing the gripping claws. A winding device comprising: a guide device that guides the wire from one side of the core to near the hole. (2) The winding device according to claim 1, characterized in that the blower pipe is provided around the holder in parallel to the movement locus plane of the suction pipe.