JPH03276607A - Wire winding equipment for toroidal core - Google Patents

Abstract

PURPOSE:To deal with a part where interference is generated in one swirl part by using the other swirl part, ensure the swirl of a clamper, surely prevent interference, and increase design freedom, by installing two or more swirl parts and a switching mechanism to change over the driving of each swirl part in accordance with the rotary position of a toroidal core. CONSTITUTION:When almost half-round winding of a wire W is finished (stand position F of two-dot chain line), the connection of a driving motor 18 is changed over from a cam mechanism 67 of a first swirl part 50 to a cam mechanism 68 of a second swirl part 51, by a switching mechanism 69. After that, the second swirl part 51 is operated. In this case a stand 11 moves toward the first swirl part 50, but said part 50 is not operated at a retreat position, thereby preventing interference with the stand 11.

Description

[Detailed Description of the Invention] [Industrial Application Fields] The present invention provides a method of winding a wire around a toroidal core in a helical manner.
The present invention relates to a toroidal core winding device for manufacturing toroidal coils used as electronic components such as noise filters in switching power supplies, for example.

[Prior Art] Conventionally, as this type of winding device, for example, the winding device shown in Fig. 16 (
1 held rotatably in the circumferential direction as shown in a)
- One side of the Loytal core C supplies the wire W to the wire W, and uses the thin crochet needle 1 that moves forward and backward along the axis of the core hole 2 of the Toroidal core C, as shown in FIG. Hook the wire W on one side of the core hole 2,
At the time of exit, the wire W is inserted into the core hole 2, and the inserted wire W is gripped by the clamper 3 so as to be approximately parallel to the axis of the toroidal core C, as shown in FIGS. 16(c) and 16(d). There is one in which the toroidal core C is wound around the winding part 4 of the toroidal core C by turning it within a plane. Then, this insertion and turning are repeated while rotating the toroidal core C, and the wire W is wound helically around the toroidal core C (for example, as disclosed in Japanese Patent Application Laid-Open No. 63-161606).
(Published in the issue).

[Invention or problem to be solved H] By the way, in this conventional toroidal core winding device, the clamper 3 is rotated, and moreover, it moves relative to the toroidal core C in the circumferential direction. There was a problem in that it was easy to interfere with other equipment, and the degree of freedom in design was limited. In particular, when the wire W is wound more than half a turn, it tends to interfere with the device that holds the toroidal core C, and if it is turned to avoid interference, the turning trajectory may not follow the normal trajectory, and the winding If this is not done in an orderly manner, the quality of the roll may deteriorate.

Therefore, an object of the present invention is to eliminate interference while maintaining a normal turning trajectory.

[Means for Solving the Problems] The technical means of the present invention for solving these problems includes a core holding section that holds a toroidal core and rotates the toroidal core in the circumferential direction; An insertion means for inserting a wire into the core hole, and a turning section for clamping the midway part of the wire inserted by the insertion means with a clamper and turning the clamper in a plane parallel to the axis of the toroidal core, In a toroidal core winding device, the wire is wound spirally around the winding portion by repeatedly inserting and turning the wire while rotating the toroidal core. It is equipped with a switching mechanism that switches the drive of each rotating part according to the rotational position of the rotating part.

Further, in this means, the clamper of the rotating part is configured to include a disk-shaped gripping plate fixed to the tip of the movable shaft, and a kite tube that holds the movable shaft so as to be movable back and forth in the axial direction. It is effective to clamp the wire between the gripping plate and the distal end surface of the kite tube when the shaft moves backward.

Furthermore, in these means, the rotating part is provided at a position offset by a predetermined distance with respect to the clamper, and includes a rotating shaft for rotating the clamper while keeping the part facing the toroidal core of the clamper constant. or is valid.

[Operation] According to this means, the wire inserted into the core hole of the toroidal core is clamped by a clamper, and the clamper is rotated in a plane parallel to the axis of the toroidal core. In this case, since driving cannot be switched depending on the rotational position of the rotating parts on the two sides or the toroidal core, the wire is wound around the winding part of the toroidal core by the rotation of the clamper of each rotating part.

[Embodiment 2] A toroidal core winding device according to an embodiment of the present invention will be described in detail below based on the accompanying drawings.

In the winding device according to the embodiment shown in FIG. 1, the toroidal core C around which the wire W is wound has a core hole 2 and a winding part 4 (FIG. 7), and has an extremely small inner diameter of, for example, 3 mm or less. It is toroidal core C.

As shown in FIGS. 1 to 4, the configuration of the winding device according to the embodiment includes 1 to a core holding portion 1 that holds a loidal core C.
0, a wire supply section 20 that supplies wire W to one side of the held toroidal core C, and the supplied wire W.
A wire holding part 3o that cuts and holds the wire to a predetermined length, and a wire W that is moved forward and backward along the axis of the toroidal core C, and hooks the middle part of the wire W on one side of the core hole 2 when advancing,
It has a crochet hook 40 as an insertion means for inserting the wire W into the core hole 2 at the time of withdrawal, and a clamper 54 for clamping the midway part of the inserted wire W. It is provided with a second turning part 50 and a second turning part 50,51 for winding the wire W which is turned and clamped inside the winding part 4.

As shown in FIG.
It is equipped with a fixed finger 12 fixed to the stand 11 and a movable finger 13 that is pivoted to the stand 11 and opened and closed, and when the movable finger is closed, the ends of both fingers 12 and 13 hold a part of the wrapped portion 4 of the toroidal core C. It is something to do. The stand 11 is also provided with an eccentric cam 15 that opens and closes the movable finger 13 by swinging the rear end 14 of the movable finger 13.

The stand 11 is located on the outer periphery of the disk 15, and the axis of the sandwiched toroidal core C and the circle! It is erected so that it coincides with the axis of No. 15. This disk 15 is rotatably mounted on a machine base 16, and is rotated by a drive motor 18 via a twin gear mechanism 17 inside the machine base 16, as shown in FIG. Incidentally, reference numeral 19 is a motor that rotates the disc 15 via the worm gear device 17 in order to bring the starter 11 to the reference position.

As shown in FIGS. 1 and 3, the wire supply section 20 includes:
It is provided on the machine base 16 so as to be able to advance and retreat with respect to the disk 15 and move in the circumferential direction of the disk 15, and the wire supply source (
The device is equipped with a roller device [21] that feeds a predetermined length of wire W from the toroidal core C on the core holding portion 10 (not shown). Further, the wire supply section 20 is provided with an arm 22 protruding from the wire W that extends along the fed wire W.
At the tip of 2, the cylinder device 23 rotates as the cylinder device 23 advances.
A pushing member 24 that pushes the wire W in a direction perpendicular to the axis of the toroidal core C is also pivotally supported.

As shown in FIGS. 5 and 6, the wire holding section 30 is
The stand 11 is provided with a fixed body 31 and a movable body 32. The fixed body 31 is fixed to one side of the stand 11, and has four portions 33 recessed in a substantially semicircular shape. The movable body 32 includes a cylindrical portion 34 whose outer periphery faces the inner periphery of the recessed portion 33, and a rotating shaft 35 extending in the axial direction from the cylindrical portion 34. Rotatably supported. A slot 36 is formed in the outer diametrical direction of the cylindrical portion 34 of the movable body 320, into which the wire W is inserted as the wire supply section 20 moves in the circumferential direction. The open edge of this slotted portion 36 is formed into an inclined surface 36a extending from the outside to the inside. In addition, the stand 11 is provided with an opening value 1fA (8th
8(a)), and a closing position B (FIG. 8(b)) in which the wire W is tilted at a predetermined angle with respect to the axis of the supplied wire W and is closed with one end of the slot 36 facing the inner surface of the recess 33. ) The rotating parts 37 that are positioned in two positions are numbered. Furthermore, one end side of the slotted part 36 of the columnar part 34 forms a notched flat part 38, and the wire W is held between the flat part 38 and the inner surface of the recessed part 33 at the closed position B. This allows a gap G (FIG. 8(b)) to be formed. An outer edge 38a that intersects the flat surface 38 of the cylindrical portion 34 and the outer peripheral surface of the cylindrical portion 34, and the recess 33 of the fixed body 31.
The outer edge 33a constitutes a cutting blade 39 that cuts the wire W in the slot 36 during the rotation process to the closed position B.

The hook 40 is attached to the tip of the reciprocating rod 41 so that its axis liP coincides with the axis Q of the toroidal core C, as shown in FIGS. 2 and 7(a) and 7(b). As shown in FIG. 7(b), the diameter M of the crochet hook 40 is the diameter that allows the wire W to be inserted when it is wound around the toroidal core C, for example, the inner diameter of the toroidal core C. If N, then M = D −
2N-2e. Here e is the clearance between the wound wire W and the crochet hook 40,
For example, the direct line of wire W? The dimensions are set at approximately XN. Furthermore, this crochet hook 40 has a hooking recess 42 on which the wire W is hooked. This hook recess 42 is formed in a size that accommodates the wire W. In addition, this crochet hook 40 has a cutout portion 45 by cutting out one side 43 of the side portions 43° 44 of the crochet hook 40 facing the wire W which is bent left and right with the hook recess 42 as a boundary when exiting.
It is formed.

Further, the reciprocating rod 41 slidably passes through the center of the disk 15, and as shown in FIG. 4, the crochet hook 40
The toroidal core C is moved in and out along its axis, and the wire W is hooked on one side of the core hole 2 when advancing, and the wire W is inserted into the core hole 2 when exiting. It is driven by a cam mechanism 46 whose driving source is the drive motor 18 so as to synchronize with the rotation of the disk 15 in a predetermined relationship.

As shown in FIG. 2, the first and second rotating parts 50.51 are provided on the machine platform 16 with the disc 15 in between, and each rotating part 50.51 is installed upright on the machine platform 16. A support body 52 in the shape of a J8x is provided.

The support body 52 has a rotating shaft 53 whose axis is directed toward the toroidal core C, or a clamper 54 at the front end of the zero-rotating shaft 53 which is rotatably and slidably supported in the axial direction. It is provided. This clamper 54 includes a movable shaft 56 having a disk-shaped gripping plate 55 at its tip and parallel to the rotating shaft 53, and a cylindrical guide tube 57 that holds the movable shaft 56 so as to be movable back and forth in the axial direction. It's getting better,
When the movable shaft 56 moves backward, the wire W is clamped by the gripping plate 55 and the distal end surface 57a of the guide tube 57. The guide tube 57 is connected to a fixed plate 58 fixed to the front end of the rotating shaft 53 at a predetermined pressure @
L It is installed in an eccentric position. Further, a movable plate 59 that slides on the rotating shaft 53 is provided on the rear side of the fixed plate 58, and the rear end of the movable shaft 56 is fixed to this movable plate 59. Support body 52
is provided with a link mechanism 60 that moves the five movable plates back and forth to move the movable shaft 56 back and forth.

Furthermore, inside the support body 52, the rotary shaft 53 is connected to a spline 63 or a binion gear 62 that engages with a rack 61 that moves up and down, and as the rack 61 moves up and down, the rotary shaft 53 is rotated. , the clamper 54 is rotated in a plane parallel to the axis of the toroidal core C while keeping the point x (FIG. 11(a)) facing the toroidal core C constant, and clamped. The wire W thus obtained is wound around the winding portion 4.

Furthermore, a sick device 64 for moving the rotating shaft 53 back and forth is provided at the rear of the rotating shaft 53. This chic device 64
is equipped with a link mechanism 66 that pushes and pulls a fixed part 65 fixed to the rotating shaft 53.

In the first and second rotating parts 50.51, the link mechanism 60 of the clamper 54, the rack 61 and the shifter device 6
For example, as shown in FIG. 4, the link IfA structure 66 of 4 is connected to the cam I! Driven by lateral 67.68. Furthermore,
Cam mechanism 67.68 of the first and second pivot parts 50.51
The clutch 67a is connected to the drive shaft 18a rotated by the drive motor 18, using the drive motor 18 as a drive source so as to be operated in synchronization with the disk 15.

68a. Also, cam mechanism 67.68
When the position of the stand 11 is on the side of the second rotating part 51 due to the rotation of the disc 15, the first rotating part 50 is operated, and the position of the stand 11 is changed to the first position by the rotation of the disc 15. When it is on the side of the rotating part 50, the first and second rotating parts 50° 5
A switching mechanism 69 for switching the connection between the one cam mechanism 67, 68 and the drive motor 18 is also provided. The switching mechanism 69 detects the angular position of the disc, for example,
Based on the signal from the encoder 15a, the drive shaft 1
8a in the axial direction to switch the connection of clutches 67a and 68a provided on the shaft of each cam mechanism.

Next, the operation of winding the wire W around the toroidal core C using the winding machine according to this embodiment will be explained.

First, the stash 11 is positioned at a reference position H on the side of the second turning section 51, as shown in FIG. In this state, the toroidal core C sent from a parts tweeter or the like (not shown) is held by the fixed fingers 12 and movable fingers 13 of the core holding section 10.

Next, in this state, a predetermined length of wire W is supplied from the wire supply section 2o (FIGS. 9(a) and 9(b)). After that, Kakikugi 4o was forced to advance. Then, the pushing member 24 of the wire supply section 20 rotates to push the wire W toward the hooking recess 42 of the advanced crochet hook 4o.
The wire W reliably engages with the hook recess 42.

After that, as shown in Fig. 1O (a) and (b), crochet hook 4
0 or t&, and wire supply section 20 or disk 15
move in the circumferential direction. Thereby, the wire W is set to the open value rLA and inserted into the slot 36 of the cylindrical part 34 formed in the movable body 32 of the wire holding part 30, as shown in FIG. 8(a). In this case, the open edge of the slot 36 is.

Since it is an inclined surface 36a going from the outside to the inside,
The wire W is guided by this inclined surface 36a and passes through the slotted portion 36.
be led to.

From this state, the rotation shaft 3 of the movable body 32 is rotated by the rotation unit 37.
5, and the slotted portion 36 is positioned from the open position A to the closed position B, as shown in FIG. 8(b).

In this case, during the rotation process to the r':A closed position B, the wire W is cut by the cutting blade 39, and since the slotted portion 36 is at the closed value fiB at the time of cutting, the wire W is inserted into the cylindrical portion 34. The flat portion 38 of the fixed body 31 is held between the inner surface of the recess 33 of the fixed body 31.

When the wire W is cut and held as described above, the wire supply section 20 returns to the original value 1. In this state, the first
As shown in FIGS. 1(a) and 1(b), the wire W is attached to a hook 4.
0 is inserted into the toroidal core C. During this insertion process, there is a gap larger than the diameter of the wire W between the paddle 8140 and the toroidal core C, and a clearance e is ensured, so even if you try to push the wire W or the toroidal core C, As the wire W is moved toward the parting nail 40 side of the clearance, this pressing force is reduced,
Therefore, a situation in which the toroidal core C is damaged is prevented.

Next, the wire W that has been pulled through is shown in FIGS.
As shown in FIG. 2 , the clamper 54 of the first rotating section 50 clamps. In this case, the clamper 54
5 and the distal end surface 57a of the guide tube 57. However, since the first gripping plate 55 and the distal end surface 57a are located around the movable shaft 56, the gripping range is wide. Even if the wire W hits the movable shaft 56 and is bent and tries to escape, the wire W can be reliably gripped.

When the wire W is clamped, the rotating shaft 53 is rotated by the vertical movement of the rack 61, and as a result, as shown in FIGS. 11(a) and 12(a), the clamper 54 or the toroidal core W is rotated in a plane parallel to the axis of C and the clamped wire W is wound around the winding part 4. In this case, the clamper 54 always keeps the point X facing the toroidal core C facing the toroidal core C. Even if the wire W is rotated while being rotated, the wire W will not be damaged, thereby preventing the 1:J situation in which the wire W is damaged or cut.

By the time the clamper 54 finishes wrapping, the nail 40 advances again and penetrates the core hole 2, and the clamper 54 hooks the wire W into the hooking recess 42 by moving forward, and then stops gripping the wire W. Open up and treat me.

Then, the insertion operation of the wire W using the hook 40 is performed again.

This insertion and the above-mentioned turning are performed while rotating the toroidal core C in the circumferential direction by the circular ring 15. That is, each time the wire W is wound by the turning part, the toroidal core C is rotated in a circular direction. The wire W is rotated in the circumferential direction, and as shown in FIG.
In this case, the rotation of the disk 15 causes the stand 11 to move near the second rotating part 51, or the second rotating part 51 is in the retracted position and is in operation. Otherwise, interference with the stand 11 can be avoided.

Furthermore, since interference is avoided, the turning of the clamper is ensured, so that the turning trajectory becomes regular, and therefore the winding is performed in an orderly manner.

As shown in FIG. 13, when this winding is performed approximately half a turn (stand position F indicated by the 31st chain double-dashed line), the switching mechanism 69 switches the cam mechanism 67 of the first rotating section 50 to the second rotating section. The connection of the drive motor 18 is switched to the cam mechanism 68 of 51, and as shown in FIG. 14, from then on, only the second rotating portion 51 operates. In this case, the stand 11 moves toward the first rotating section 50, or the first rotating section 50 is in the retreated position and does not operate, so that interference with the stand 11 is avoided.

Also, in the subsequent half-circle winding, the advanced crochet hook 40 or the wire ■' is hooked &t'-r and inserted into the toroidal core C at the time of withdrawal, in the same manner as described above. This insertion process is
15(a)(b) 4 As shown, the wire W being inserted comes into contact with the previously wound wire W', and attempts to push the toroidal core C through the previously wound wire W'. However, this force is applied to the crochet hook 40 (the wire ~' which is bent left and right with the hooking recess 42 as a boundary), which is placed on one side of the crochet hook 40 and is attached to the previously wound wire W. Since the opposing side ζ notches 45 are formed, the wire ~'
Even if an attempt is made to press the toroidal core C, the wire W is drawn to the notch 45 and a part or all of the force C enters, so this pressing force is reduced by that amount,
Therefore, the situation of damaging the toroidal core C is prevented.

Moreover, the thickness of the crochet needle 40 in the negative direction becomes smaller due to the provision of this notch 45, and the thickness in the width direction perpendicular to this ζ does not change much. figure(
As shown in a), the width for hanging the wire 1' can be secured to 1 minute, and the strength is also ensured compared to simply making the whole wire thinner.

Further, since the notch 45 is provided only on one side facing the previously wound half-circle of the wire W, the entire wire does not become thinner, and the strength is ensured.

In this way, when wrapping the entire circumference is completed, the core holder 10 releases its grip on the toroidal core C, and the motor 19 positions it at the reference position rLH again, in order to wrap the next toroidal core C. You will have to wait.

In the above embodiment, two sets of rotating parts are provided, but the invention is not limited to this, and three or more may be provided.

[Effects of the Invention] As explained above, according to the toroidal core winding device of the present invention, the driving of each rotating part can be switched according to the rotational position of the toroidal core. In this case, other rotating parts are used to deal with areas where interference occurs.
Therefore, rotation of the clamper can be ensured, interference can be reliably prevented, and the degree of freedom in design can be increased.

In addition, since the clamper can be rotated, the rotation locus becomes regular, so that the winding can be performed in an orderly manner and the winding quality can be maintained at a good level.

Furthermore, if the clamper is configured to hold the wire with a disc-shaped gripping plate and the tip end surface of the guide tube, the gripping range between the gripping plate and the tip end surface will be extended over the entire circumference. Therefore, it is possible to grip the wire securely.

Furthermore, if the clamper is rotated by an eccentric rotating shaft, the clamper will rotate while facing the fixed point or the toroidal core, and the wire will not be damaged.
Therefore, it is possible to prevent the wire from being damaged or cut.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a toroidal core winding device according to an embodiment of the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a toroidal core winding device according to an embodiment of the present invention. FIGS. 5 and 6 are rear views and perspective views showing the wire holder according to the embodiment. FIGS. A front view and a side view showing the crochet hook according to the example, FIGS. 8(a) and 8(b) are front views showing the action of the wire holding part according to the example, and FIG. 9(a)
(b) and FIGS. 10(a) and 10(b) are side sectional views and plan views showing the process of winding the wire around the toroidal core by the winding device according to the embodiment, and FIGS. 11(a), (b), and (c). )
12(a) and 12(b) are a side sectional view, a top view and a perspective view showing the process of winding the wire around the toroidal core, and FIG. The figure is a plan view showing the process of winding the wire around the toroidal core, Figure 14 is a side sectional view showing the process of winding the wire around the toroidal core, and Figure 15 (a)
b) is a side sectional view and a plan view showing the process of winding the wire around the toroidal core, and FIGS. 16(a) to 16(d) are diagrams showing an example of a conventional wire winding method. C... Toroidal core W... Wire 10... Core holding part 20... Wire supply part 30... Wire holding part 40... Scratching needle 42... Hook Recessed portion 45... Notch portion 50... First rotating portion 51... Second rotating portion 53... Rotating shaft 54... Clamper 55... Gripping plate 56 ...Movable shaft 57...Guide tube 67.68...Cam mechanism 69...Switching mechanism

Claims (3)

[Claims] (1) A core holding part that holds the toroidal core and rotates the toroidal core in the circumferential direction, an insertion means for inserting a wire into the core hole of the toroidal core, and a midway part of the wire inserted by the insertion means. The wire is clamped by a clamper and has a turning part that turns the clamper in a plane parallel to the axis of the toroidal core, and the wire is repeatedly inserted and turned while rotating the toroidal core, and the wire is attached to the winding part. A toroidal core winding device for spirally winding a toroidal core, characterized in that two or more of the above-mentioned turning parts are provided, and a switching mechanism is provided to switch the drive of each turning part according to the rotational position of the toroidal core. winding device. (2) The clamper of the swing section is configured with a disk-shaped grip plate fixed to the tip of the movable shaft, and a guide tube that holds the movable shaft so that it can move back and forth in the axial direction. 2. The toroidal core winding device according to claim 1, wherein the wire is sometimes clamped by the gripping plate and the distal end surface of the guide tube. (3) The rotating part is provided at a position eccentric to the clamper by a predetermined distance, and includes a rotating shaft for rotating the clamper while keeping the part facing the toroidal core of the clamper constant. The toroidal core winding device according to claim 1 or 2.