JP2976757B2 - Taping wheel and tape winding device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taping wheel capable of reliably winding both ends of an insulating tape around a joint wire when the insulating tape is wound around a joint portion of a joint wire, and a tape winding device using the same.

[0002]

2. Description of the Related Art For example, a so-called joint electric wire is widely used in a wire harness of an automobile or a wire harness of an electric device. Here, as shown in FIG. 5 (a), for example, as shown in FIG. 5 (a), the intermediate wire is stripped of the covering of the portion to be connected of the scale-cut wire (main line) MW and should be connected there. One end of the electric wire (branch wire) BW is crimped at the joint terminal JT. As shown in FIG. 5B, the joint portion of the joint electric wire is generally subjected to a process of winding an insulating tape T around the joint portion. Further, in addition to the above-mentioned joint electric wires, there are also those in which, for example, the coatings of the middle portions of the two electric wires are peeled off to expose the core wires, and the exposed portions are connected by joint terminals.

Conventionally, when an insulating tape T is wound around a joint portion of a joint electric wire JW, for example,
A tape winding device as disclosed in, for example, Japanese Patent No. 18380 is used. Such a tape winding device is provided with a taping wheel 1 for winding an insulating tape T around a joint portion of a joint electric wire JW as shown in FIG.

Referring to FIG. 6, a conventional taping wheel 1 has a rotating body 11 which is rotated by a predetermined driving device.
And a pair of brushes 12 and 13 attached to the opposing surface of the notch 11a of the rotating body 11 at a predetermined interval (for example, 2 mm). A pair of guide plates 14 and 15 are provided in front and rear of the rotating body 11, and each of the guide plates 14 and 15 is provided with an insulating tape T and a joint electric wire JW between the brushes 12 and 13 (accommodation opening). Guide notches 14a and 15a for guiding to E are provided.

When winding the insulating tape T, the insulating tape T
Is cut into a predetermined size and fed out to the outer peripheral portion of the rotating body 11. The upper surface of the insulating tape T is an adhesive surface. With the joint of the joint wire JW lying on the adhesive surface of the insulating tape T, the joint wire JW is
It is pushed into the accommodation port E between the three. When the joint electric wire JW reaches near the deep ends of the guide notches 14a and 15a of the guide plates 14 and 15, a limit switch (not shown) is activated, and the rotating body 11 is turned around the rotation axis AA 'by an arrow R. Rotate several times in the direction and stop. At this time, since the insulating tape T is rubbed against the joint of the joint electric wire JW, the winding of the insulating tape T around the joint of the joint electric wire JW is achieved.

[0006]

In the conventional taping wheel 1, as shown in FIG.
The accommodation port E, which is the gap of No. 3, is provided with the rotation axis A-
It is parallel along A '. For example, when the insulating tape T is wound around the joint electric wire JW shown in FIG.
As shown in (a) to (d), the force (pressure) applied to the joint portion of the joint electric wire JW is the same regardless of the position where the taping wheel 1 rotates. Therefore, the tightening force for the portion where only one main wire MW is pulled out and the winding diameter is small is the tightening force for the portion where the two wires of the main wire MW and the branch wire BW are drawn out and the winding diameter is large. It becomes weaker than.

Therefore, as shown in FIG.
On the side B where the two electric wires of the branch line BW are drawn out and the winding diameter is large, the insulating tape T is wound tightly without any gap, but on the side M where the main line MW is pulled out and the winding diameter is small, The insulating tape T is not wound tightly, leaving a gap. That is, both ends of the insulating tape T are not securely wound around the joint electric wire JW, which causes a displacement of the insulating tape T.

The present invention has been made in view of the above technical problems, and has as its object to provide a taping wheel capable of securely winding both ends of an insulating tape around a joint wire and a tape winding device using the same.

[0009]

According to a first aspect of the present invention, there is provided a taping wheel used for winding an insulating tape around a joint portion of a joint electric wire having a joint portion to which a plurality of electric wires are electrically connected. , A pair of brushes arranged such that their tips are opposed to each other, an accommodating portion for accommodating at least a joint portion and an insulating tape of a joint electric wire, formed by an opposing gap between the pair of brushes, and an accommodating portion of the accommodating portion. It includes holding means for holding the pair of brushes so that both ends can rotate while being eccentric in opposite directions.

According to a second aspect of the present invention, there is provided a taping wheel which is rotatably provided in a taping wheel used when an insulating tape is wound around a joint portion of a joint electric wire having a joint portion to which a plurality of electric wires are electrically connected,
A rotating body having a substantially cylindrical shape, having a notch formed from a part of its outer periphery toward a rotation center, deeper than the rotation center, and penetrating in the axial direction, and opposing the notch of the rotation body in the notch A pair of brushes attached to the surface at a predetermined interval and forming at least a joint part of the joint electric wire and a housing part of the insulating tape, the housing part between the brushes is arranged with respect to the rotation axis of the rotating body. , And obliquely intersect so as to pass through substantially the center in the width direction of the rotating body.

According to a third aspect of the present invention, there is provided a first aspect of the present invention.
Or a tape winding device using the taping wheel according to 2, wherein the accommodation portion of the taping wheel includes:
Supply means for supplying a predetermined length of insulating tape, and
A driving means for rotating the taping wheel when the joint portion of the joint electric wire and the insulating tape are inserted into the accommodation portion of the taping wheel is included.

[0012]

According to the third aspect of the present invention, an insulating tape having a predetermined length is supplied onto the accommodating portion of the taping wheel by the supply means. Then, when the joint portion of the joint wire and the insulating tape are inserted into the accommodating portion of the taping wheel, the taping wheel is rotated by the driving means. Then, as a result of the brush rubbing the insulating tape against the joint portion of the joint electric wire, winding of the insulating tape around the joint portion of the joint electric wire is achieved.

At this time, according to the first aspect of the present invention, since both ends of the housing portion between the pair of brushes rotate while being eccentric in opposite directions, the housing portion of the joint electric wire depends on the rotating position of the taping wheel. The applied force (pressure) is different. Therefore, as a result, the insulating tape can be tightened and wound from both sides, so that both ends of the insulating tape can be securely wound around the joint electric wire.

[0014] According to another aspect of the present invention,
Since the accommodating portion between the brushes crosses the rotation axis of the rotating body obliquely so as to pass through substantially the center in the width direction of the rotating body, the force (pressure) applied to the joint portion of the joint wire is With the rotation of the rotating body, the rotating body is successively added by 360 degrees on a diagonal line intersecting substantially the center in the width direction of the rotating body with respect to the rotation axis of the rotating body. Therefore, as a result, the insulating tape can be tightened and wound from both sides, so that both ends of the insulating tape can be securely wound around the joint electric wire.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 2 is a diagram schematically illustrating a configuration of a tape winding device according to an embodiment of the present invention. Referring to the figure, a tape winding device D of the present embodiment includes an insulating tape T1 on a joint portion of a joint electric wire JW1 (see FIG. 3).
Is provided with a taping wheel 10 for winding.

FIG. 1 is a perspective view showing the structure of a taping wheel. Referring to FIG.
Reference numeral 0 denotes a rotating body 20 rotatably fitted in a recessed portion (not shown) of the apparatus main body, and is attached at a predetermined interval (for example, 2 mm) to an opposing surface in the notch 201 of the rotating body 20. And a pair of brushes 31 and 32 provided.

The rotating body 20 has a substantially cylindrical shape, and has a notch 201 formed from a part of the outer periphery toward the center of rotation, deeper than the center of rotation, and penetrating in the axial direction. The brushes 31 and 32 are for rubbing the insulating tape T1 around the joint portion of the joint electric wire JW1 and winding the same. Each of the brushes 31 and 32 includes a substrate 311, 321 fixed to the opposing surface of the notch 201,
1,321 are provided with a large number of hairs 312,322. In the gap between the bristle tips of the brushes 31, 32, a joint portion of the joint electric wire JW1 and a receiving opening E1 of the insulating tape T1 are formed. The accommodation opening E1 obliquely intersects the rotation axis A1-A1 'of the rotating body 20 so as to pass substantially through the center of the rotating body 20 in the width direction (see FIG. 3). That is, the bristles 31 of the brushes 31 and 32
2,322 are cut diagonally.

A rotary body 2 is provided in front of and behind the rotary body 20.
A pair of guide plates 41, 4 for preventing separation in the axial direction of zero.
2 are arranged. The guide plates 41 and 42 are fixed around the concave portion of the apparatus main body. Each guide plate 41,
Reference numeral 42 denotes a substantially disk-like shape slightly larger than the rotating body 20, and corresponds to the notch 201 of the rotating body 20, and a guide notch 411, which reaches the rotation center of the rotating body 20 from a part of the outer periphery thereof. 421 are formed. The guide notches 411 and 421 are for guiding the insulating tape T1 and the joint electric wire JW1 to the accommodating opening E1 between the brushes 31 and 32, and have a smaller width than the notch 201 of the rotating body 20.

Referring again to FIG. 2, the tape winding device D has a sending mechanism 5 for feeding the insulating tape T1 at a predetermined pitch onto the accommodation port E1 of the taping wheel 10.
0, and the taping wheel 10
A cutting mechanism 60 for cutting the insulating tape T1 sent out onto the accommodation opening E1 into a predetermined length, and a taping wheel 1
A drive mechanism 70 that rotates the taping wheel 10 when the joint portion of the joint electric wire JW1 and the insulating tape T1 are inserted into the accommodation port E1 of the “0”.

The sending mechanism 50 includes an encoder roller 501 for measuring the feeding length of the insulating tape T1 into which the tape roll TR is fitted, a driven pulley 502 coaxially rotating with the encoder roller 501, and an encoder roller 501.
Drive motor 503 for rotating the
A drive pulley 504 that rotates coaxially with the output shaft of No. 3, an endless pulley belt 505 that is wound around the drive pulley 504 and the driven pulley 502, and transmits the rotational force of the drive motor 503; A pair of pinch rollers 506 are provided on the downstream side and feed the insulating tape T1 onto the accommodation port E1 of the taping wheel 10.

The cutting mechanism 60 includes a fixed blade 601 disposed below the insulating tape T1 sent from the pinch roller 506 and a movable blade 6 disposed above the insulating tape T1.
02 and an actuator 603 for driving the movable blade 602. The drive mechanism 70 includes a limit switch 701 that is fixed to the vicinity of the back end of the guide notch 411 of the one-side guide plate 41 and detects that the joint wire JW1 is pushed into the back end of the guide notch 411. Further, the driving mechanism 70 includes a gear 702 fixed to one side surface of the rotating body 20, a pair of small-diameter gears 703 a and 703 b meshing with the gear 702, and each small-diameter gear 7.
03a, 703b, a large diameter gear 704, a driven pulley 705 that rotates coaxially with the large diameter gear 704, a drive motor 706 that rotates the rotating body 20, and a drive pulley that rotates coaxially with the output shaft of the drive motor 706. 707,
An endless pulley belt 708 that is wound between the drive pulley 707 and the driven pulley 705 and transmits the rotational force of the drive motor 706 is provided. The rotating body 2
The zero gear 702 has a slightly smaller diameter than the outer circumference of the rotating body 20.
A notch corresponding to 1 is provided.

In FIG. 2, reference numeral 80 denotes a microcomputer which includes a CPU, a data RAM, a program ROM, and the like, and performs control according to a program stored in the ROM in advance. Specifically, the microcomputer 80 is supplied with the encoder output of the encoder roller 501, and controls the driving of the drive motor 503 of the sending mechanism 50 and the actuator 603 of the movable blade 602 based on the encoder output. I do. The microcomputer 80 is provided with the detection output of the limit switch 701, and based on the detection output, the drive mechanism 7
The drive of the 0 side drive motor 706 is controlled.

In the above configuration, when an operation switch (not shown) is pressed, the insulating tape T1 of a predetermined length is made to stand by on the outer peripheral portion of the taping wheel 10. That is,
An operation signal is output from the microcomputer 80, and the drive motor 503 on the sending mechanism 50 rotates. The torque of the drive motor 503 is transmitted to the encoder roller 501 via the drive pulley 504, the pulley belt 505, and the driven pulley 502. As a result of the rotation of the encoder roller 501, the insulating tape T1 is sent to the accommodation port E1 (see FIG. 1) of the taping wheel 10 via the feed roller 506. When the encoder roller 501 detects that the insulating tape T1 has been fed by a predetermined length, the microcomputer 80 stops the drive of the drive motor 503 based on the encoder output, and
The second actuator 603 is driven. Thereby, the shearing surfaces of the movable blade 602 and the fixed blade 601 overlap, and the insulating tape T1 is cut to a predetermined length.

Next, the joint wire JW1 is turned sideways to bring the joint into contact with the adhesive surface of the insulating tape T1,
It is pushed into the accommodation port E1 between the brushes 31 and 32 as it is.
At this time, since the insulating tape T1 has already been cut,
The joint wire JW1 is accommodated in the accommodation port E together with the insulating tape T1.
1, the limit switch 701 is actuated when it reaches near the deep ends of the guide notches 411, 412 of the guide plates 41, 42.

When the limit switch 701 is operated,
The taping wheel 10 rotates several times and stops at the original position. That is, when there is a detection output from the limit switch 701, the microcomputer 80 drives the drive motor 706 to the drive mechanism 70 side. The torque of the drive motor 706 is transmitted to the large-diameter gear 704 via the drive pulley 707, the pulley belt 708, and the driven pulley 705,
Further, from the large-diameter gear 704 to the small-diameter gears 703a, 703b
Is transmitted to the gear 702 via the As a result, the rotating body 20 rotates in the direction of the arrow R1 (see FIG. 1) about the rotation axis A1-A1 ', so that the insulating tape T1 is rubbed against the joint portion of the joint electric wire JW1. The winding of the JW1 around the joint is achieved.

At this time, the housing E between the brushes 31 and 32
1 is a rotation axis A1- of the rotating body 20 as shown in FIG.
A1 ′ obliquely crosses the center of the rotating body 20 in the width direction, so that the joint electric wire J
With the W1 joint inserted, the one-side brush 3
It contacts the long left portion of one bristle and the long right portion of the bristle of the other brush 32. That is, the joint wire JW1
Is applied on a diagonal line B1-B1 'passing substantially through the center of the rotating body 20 in the width direction with respect to the rotation axis A1-A1' of the rotating body 20. Along with the rotation of 20, the force (pressure) applied to the joint portion changes from a diagonal line B1-B1 'to a rotation axis A1-A1' of the rotating body 20, a diagonal line C1 passing substantially the center in the width direction of the rotating body 20. −C1 ′, and further from the diagonal line C1-C1 ′ to the diagonal line B1-B1 ′. That is, the force (pressure) applied to the joint portion of the joint electric wire JW1 is sequentially increased by 36 as the rotating body 20 rotates.
0 degree, a diagonal line B1-B that intersects the rotation axis A1-A1 'of the rotating body 20 and substantially the center in the width direction of the rotating body 20.
1 'and C1-C1', it is possible to tighten and wind the insulating tape T1 from both sides. Therefore, both ends of the insulating tape T1 can be securely wound around the joint electric wire JW1, and the insulating tape T1 does not shift.

Further, even when the joint portion is thickened due to waterproof treatment or the like, the force (pressure) does not concentrate on the center (joint terminal) of the joint portion, and the pressure line B1
-The insulating tape T1 can be securely wound without being affected by the 360-degree rotation of -B1 'and C1-C1'. It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made within the scope of the present invention.

For example, as shown in FIG. 4A, the brush substrate
The storage port E1 between the first and second slots 32 may be obliquely crossed with respect to the rotation axis of the rotating body 20 so as to pass substantially the center of the rotating body 20 in the width direction. Further, as shown in FIG. 4B, the cutout surfaces 201 a and 202 b of the rotating body 20 are inclined, and the housing opening E1 between the brushes 31 and 32 is moved relative to the rotating axis of the rotating body 20. May be obliquely crossed so as to pass through substantially the center in the width direction. In this case,
A conventional brush can be used as it is.

Further, the configuration of the tape winding device may be the configuration shown in, for example, Japanese Utility Model Publication No. 57-18380.

[0030]

As is apparent from the above description, according to the present invention, since both ends of the insulating tape can be securely wound around the joint wires, there is an excellent effect that the insulating tape does not shift.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration of a taping wheel according to an embodiment of the present invention.

FIG. 2 is a diagram schematically illustrating a configuration of a tape winding device.

FIG. 3 is an enlarged plan view of a main part of the taping wheel.

FIG. 4 is an enlarged plan view of a main part of a taping wheel according to another embodiment.

FIG. 5 is a diagram illustrating an example of a joint process.

FIG. 6 is a perspective view showing a configuration of a conventional taping wheel.

FIG. 7 is an enlarged plan view of a main part of the taping wheel.

FIG. 8 is a diagram illustrating a relationship between a rotational position of a taping wheel and a force applied to a joint portion of a joint electric wire.

FIG. 9 is a perspective view showing an example in which both ends of the insulating tape cannot be securely wound around the joint electric wire.

[Explanation of symbols]

 D Tape winding device 10 Taping wheel 20 Rotating body 201 Notch 31, 32 Brush E1 Storage port 50 Sending mechanism 60 Cutting mechanism 70 Drive mechanism 80 Microcomputer JW1 Joint wire

Claims (3)

(57) [Claims] 1. A taping wheel used when an insulating tape is wound around a joint portion of a joint electric wire having a joint portion to which a plurality of electric wires are electrically connected, wherein a pair of brushes are arranged such that their tips are opposed to each other. Formed by the opposed gap between the pair of brushes, a housing portion for housing at least the joint portion and the insulating tape of the joint wire, and so that both ends of the housing portion can rotate while being eccentric in opposite directions to each other, A taping wheel comprising a holding means for holding the pair of brushes. 2. A taping wheel used for winding an insulating tape around a joint portion of a joint electric wire having a joint portion to which a plurality of electric wires are electrically connected, the taping wheel being rotatably provided and having a substantially cylindrical shape. A rotating body having a notch formed deeper than the center of rotation and penetrating in the axial direction from a part of the outer periphery toward the center of rotation, and a predetermined interval between the rotating body and the opposing surface in the notch. Includes a pair of brushes forming at least a joint portion of the joint wire and a housing portion of the insulating tape, the housing portion between the brushes, with respect to the rotation axis of the rotating body,
A taping wheel, which crosses obliquely so as to pass through substantially the center in the width direction of the rotating body. 3. A tape winding device using a taping wheel according to claim 1 or 2, wherein supply means for supplying a predetermined length of insulating tape onto a housing portion of the taping wheel, and the taping. A tape winding device comprising a driving means for rotating a taping wheel when a joint portion of a joint electric wire and an insulating tape are inserted into a housing portion of a wheel.