JPH0687621B2 - How to install the seal tube - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically provides a waterproof seal tube (also called a waterproof seal ring) for preventing water droplets such as water and rain from entering a covered electric wire (hereinafter simply referred to as an electric wire). The present invention relates to a method of mounting a seal tube to be mounted.

[0002]

2. Description of the Related Art Conventionally, this type of seal tube mounting means is
It is configured as shown in FIGS. 2 to 6 (Japanese Utility Model Publication No. 3-17533).

2 to 6, a disk-shaped index table 2 is axially mounted on the front of a machine frame 1 of an electric wire processing machine so as to rotate intermittently. Is provided so as to hold the electric wire W stripped by a plurality of (six) clamp jigs 3. Further, the machine frame 1 near the clamp jig 3 is provided with a centering mechanism 5 having a clamp claw 4, and the centering mechanism 5 is, for example,
By driving the cylinder device 5a by an air cylinder, the clamp claw 4 is opened and closed to operate the electric wire W.
Is held, and the electric wire W is held so as not to inadvertently move when the seal tube s is inserted. Further, in the machine frame 1 near the electric wire W, the flat base 6 is provided with the support 7
In the machine frame 1 in the upper middle position of the base 6, a slender cylindrical magazine 8 is installed in the seal tube s.
Are provided vertically with a gap 8a corresponding to the height of the (see FIG. 3). Furthermore, in this magazine 8, for example,
A large number of sealing pipes (also called waterproof sealing rings) s made of waterproof rubber are loaded so as to be taken out one by one, and a pusher 9 by an air cylinder pushes the sealing pipe s at one end 6a of the base 6. Is provided.

That is, a bracket 10 is attached to one end 6a of the base 6, and the bracket 10 is provided with a cylinder device 11 such as an air cylinder.
Is horizontally mounted, and each slide shaft 12 is connected to an output shaft 11a of the cylinder device 11. Each slide shaft 12 includes a pair of push holders 1.
It is held slidably at 3. A pusher portion 14 having a substantially U-shape is provided at the tip of each slide shaft 12 so as to horizontally push out the lowermost seal tube s of the magazine 8, and these pushers 9 form a pusher 9. is doing. Further, the other end 6b of the base 6 has a vacuum suction port 1
5 is provided by connecting to the vacuum hose 16,
The vacuum suction port 15 is adapted to temporarily vacuum-suck the seal tube s. Furthermore, this vacuum suction port 15
The holding member 17 immediately above the
Is horizontally provided so as to face the electric wire W, and a part of one fan gear 19 is connected to the end of the output shaft 18a of the direction changing cylinder device 18. Is mounted on the support shaft of the holding member 17 as an angle conversion mechanism. Furthermore, a fan-shaped gear 20 of the same shape and size is engaged with the fan-shaped gear 19 so as to rotate about 90 °, and the fan-shaped gear 20 is mounted on the support shaft of the holding member 17. ing. Further, an insertion head 21 is integrally provided on a part of the sector gear 20, and the seal tube s is provided at an opening 21a of the insertion head 21.
Is temporarily inserted and frictionally retained.

That is, the direction changing cylinder device 18 is
By interlocking the two fan-shaped gears 19 and 20 with each other so as to mesh with each other, the insertion head 21 is rotated from the vertical direction to the horizontal direction, that is, the angle conversion of θ = 90 ° is given. .

On the other hand, a supporting member 22 is provided on the machine frame 1 near the direction changing cylinder device 18.
An elevating cylinder device 23 is provided on the support member 22 so as to frictionally insert the seal tube s into the insertion head 21. A push holder 24 is provided on the output shaft of the elevating cylinder device 23 so as to be able to move up and down, and a pair of sliding rods 25 are slidably fitted to the push holder 24. Further, a stroke adjusting member 26 is attached to the tail ends of the two sliding rods 25 so as to abut the end surface 24a of the push holder 24. The adjusting screw rod 26a of the stroke adjusting member 26 is inserted later. The insertion stroke of the cylinder 27 is regulated. Furthermore, an insertion cylinder 27 is horizontally provided in parallel with the turning cylinder device 18 at the front end of the push holder 24, and an output shaft 27a of the insertion cylinder 27 is connected to the holding member 17. The holding member 17 reciprocates toward the electric wire W to insert the seal tube s.

As described above, the holding member 1 is attached to the machine frame 1.
7, turning cylinder device 18, fan gears 19, 20,
An index unit 28 is composed of the insertion head 21, the lifting cylinder device 23, the push holder 24, the two sliding rods 25, the insertion cylinder 27, and the like.

Therefore, the above-mentioned means for mounting the seal tube is
Index table 2 equipped with clamp jig 3 in advance
The electric wire W stripped by the centering mechanism 5 having the clamp claw 4 is horizontally held and stands by.

Next, the pusher portion 14 of the pusher 11 pushes the lowermost seal tube s of the magazine 8 forward to move it to the vacuum suction port 15, and the vacuum suction port 1
5 temporarily adsorbs the seal tube s. Then, the elevating cylinder device 23 lowers the insertion head 21 from above and inserts it into the opening 21a of the insertion head 21 through the seal tube s.
When frictionally inserted, the above-mentioned turning cylinder device 18
Rotate the insertion head 21 approximately 90 ° through the respective fan-shaped gears 19 and 20 that mesh with each other, and the insertion cylinder 27 moves forward in the horizontal direction so that the seal pipe s of the insertion head 21 is stripped of the wire W. Through the above wire W
After inserting the seal tube s on the outer periphery of the insert cylinder 27, the insert cylinder 27 is moved back. At this time, the frictional force of the seal pipe s inserted into the electric wire W is applied to the opening 21a.
Since the frictional force is much larger than the inserted frictional force, the seal tube s is inserted in the electric wire W.

[0010]

However, theoretically, the above-mentioned means for mounting the seal tube is to insert the seal tube s into the electric wire W by moving the insertion head 21 forward by the insertion cylinder 27 in the horizontal direction. After the insertion, the insertion cylinder 27 is moved back, but at this time, the frictional force of the seal tube s inserted into the electric wire W is the frictional force of inserting the seal tube s into the opening 21a of the insertion head 21. Since the seal tube s is much larger than the seal tube s, the seal tube s is inserted into the electric wire W. However, as shown in FIGS. 5A, 5B, and 5C, in reality, the seal tube s has a small diameter. After the portion s1 has greatly expanded, when the insertion cylinder 27 is returned, the return elasticity of the seal tube s causes the entire seal tube s to be pulled back from the reference mounting position O by the distance L, as shown in FIG. like, Serial wire W caulked to it is difficult to crimp the seal tube s in normal position the terminal T after inserted into impair the quality, there is a problem to reduce the waste increases the production cost.

In order to solve the above-mentioned problems, the present invention eliminates the stretch and withdrawal of the seal tube, prevents the entire seal tube from being pulled back from the reference mounting position, and inserts the seal tube into the electric wire. It is an object of the present invention to provide a method for mounting a seal tube, in which a terminal is crimped to a regular position after that, a quality is improved, a waste is eliminated, and a production cost is reduced.

[0012]

SUMMARY OF THE INVENTION According to the present invention, a machine frame is provided with an index table having a clamp jig for gripping an electric wire and a centering mechanism having a clamp claw, and a base is provided in the vicinity of the electric wire. Vertically install a magazine containing a seal tube, install a pusher at one end of the base to push the seal tube, and a vacuum suction port at the other end of the base to suck the seal tube. It is attached to the holding member just above the vacuum suction port so as to turn the insertion head and rotate about 90 ° through the cylinder device and the fan gears meshing with each other, and the seal tube is installed in the insertion head. The push cylinder of this lifting cylinder device is provided with an insertion cylinder, and the insertion head is pushed by this insertion cylinder to move the seal tube. It is intended to be inserted into the line.

[0013]

According to the present invention, the electric wire stripped beforehand by the index table having the clamp jig and the centering mechanism having the clamp claw is horizontally held and waited, and then the seal tube in the magazine is pushed by the pusher. It moves to the vacuum suction unit, temporarily sucks the seal tube by this vacuum suction unit, inserts the seal tube in the insertion head by the elevating cylinder device, changes the direction of the insertion head, and the cylinder device and This is a method in which the seal tube is rotated at about 90 ° through the mutually meshing fan-shaped gears, and when the seal tube is inserted into the electric wire, the insertion cylinder is reciprocated at least two times to mount the seal tube at a predetermined position of the electric wire.

[0014]

The present invention will now be described with reference to the illustrated embodiments.

The present invention will be described by giving the same reference numerals to the same constituent members as those of the above-described specific example.

In FIG. 1, reference numeral 1 denotes a disk-shaped index table 2 axially mounted on the front of a machine frame 1 of an electric wire processing machine so as to rotate intermittently. , A plurality of (six) clamp jigs 3 are provided to hold the stripped electric wire W. Further, the machine frame 1 near the clamp jig 3 has a centering mechanism 5 provided with a clamp claw 4.
This centering mechanism 5 drives the cylinder device 5a by an air cylinder to open / close the clamp claw 4 to grip the electric wire W, and when the seal tube s is inserted, The electric wire W is held so as not to move inadvertently. Further, a flat base 6 is horizontally provided on a support frame 7 in the machine frame 1 near the electric wire W, and an elongated cylindrical magazine 8 is provided in the machine frame 1 in the middle upper position of the base 6. Are vertically installed with a gap 8a corresponding to the height of the seal pipe s (see FIG. 3). Further, in the magazine 8, for example, a large number of waterproof rubber seal tubes (also referred to as waterproof seal rings) s are loaded so as to be taken out one by one. A pusher 9 made of a cylinder is provided so as to push the lowest seal tubes s one by one.

That is, a bracket 10 is attached to one end portion 6a of the base 6, and the bracket 10 is provided with a cylinder device 11 such as an air cylinder.
Is horizontally mounted, and each slide shaft 12 is connected to an output shaft 11a of the cylinder device 11. Each slide shaft 12 includes a pair of push holders 1.
It is held slidably at 3. A pusher portion 14 having a substantially U-shape is provided at the tip of each slide shaft 12 so as to horizontally push out the lowermost seal tube s of the magazine 8. Further, the other end 6b of the base 6 is
A vacuum suction port 15 is provided so as to be connected to a vacuum hose 16, and the vacuum suction port 15 is adapted to temporarily vacuum-suck the seal tube s. Further, on the holding member 17 just above the vacuum suction port 15, a direction changing cylinder device 18 is horizontally provided so as to face the electric wire W, and an output shaft 18 of the direction changing cylinder device 18 is provided.
A part (bracket) of one fan-shaped gear 19 is connected to the end of a, and this fan-shaped gear 19 is axially mounted on the support shaft of the holding member 17 as an angle conversion mechanism. Furthermore, a fan-shaped gear 20 of the same shape and size is engaged with the fan-shaped gear 19 so as to rotate about 90 °, and the fan-shaped gear 20 is mounted on the support shaft of the holding member 17. ing. In addition, the insertion head 21 is provided in a part of the sector gear 20.
Is integrally provided, and the seal tube s is temporarily inserted into the opening 21a of the insertion head 21 and frictionally held.

That is, the direction changing cylinder device 18 is
By interlocking the two fan-shaped gears 19 and 20 with each other so as to mesh with each other, the insertion head 21 is rotated from the vertical direction to the horizontal direction, that is, the angle conversion of θ = 90 ° is given. .

On the other hand, a supporting member 22 is provided on the machine casing 1 near the turning cylinder device 18.
An elevating cylinder device 23 is provided on the support member 22 so as to frictionally insert a seal tube (seal ring) s into the opening 21 a of the insertion head 21. or,
A push holder 24 is provided on the output shaft of the lifting cylinder device 23 so as to be able to move up and down, and a pair of sliding rods 25 are slidably fitted to the push holder 24. Further, a stroke adjusting member 26 is provided at the tail end portion of both the sliding rods 25, and
4 is provided so as to be able to contact the end surface 24a of the No. 4 and the adjusting screw 26a of the stroke adjusting member 26 regulates the insertion stroke of the insertion cylinder 27 described later. Furthermore, at the front end portion of the push holder 24, the insertion cylinder 27 is provided with the turning cylinder device 1
8, the output shaft 27a of the insertion cylinder 27 is connected to the holding member 17, and the insertion head 21 of the holding member 17 reciprocates toward the electric wire W and seals. The tube s is inserted.
Further, the machine frame 1 includes an index formed by a holding member 17, a direction changing cylinder device 18, fan gears 19 and 20, an inserting head 21, a lifting cylinder device 23, a push holder 24, both sliding rods 25, an inserting cylinder 27, and the like. The unit 28 is configured. Further, an electromagnetic switching valve 29 is attached to the insertion cylinder 27, and the electromagnetic switching valve 29 controls the reciprocating operation of the insertion cylinder 27. Further, a control circuit 30 such as a central processing unit (CPU) is connected to the electromagnetic switching valve 29, and the control circuit 30 controls the insertion cylinder 27 via the electromagnetic switching valve 29. It is like this.

The operation of the present invention will be described below.

Therefore, in advance, the electric wire W stripped by the index table 2 having the clamp jig 3 and the centering mechanism 5 having the clamp claw 4 is horizontally held and stands by.

Next, the pusher portion 14 of the pusher 11 pushes and moves the seal tube s at the lowermost end of the magazine 8 to the vacuum suction port 15. Then, this vacuum suction port 1
5 temporarily adsorbs the seal pipe s, so that when the elevating cylinder device 23 descends the insertion head 21 from above and frictionally inserts the seal pipe s into the opening 21a of the insertion head 21, The changing cylinder device 18 turns the inserting head 21 approximately 90 degrees to make it horizontal through the respective fan-shaped gears 19 and 20 meshing with each other, and at the same time, the inserting cylinder 27 moves the inserting head s in the horizontal direction. After inserting the seal tube s into the electric wire W, the insertion cylinder 27 is moved back. At this time, the electric wire W
Since the frictional force of the seal tube s inserted into the above is much larger than the frictional force of inserting the seal tube s into the opening 21a, the seal tube s is inserted into the electric wire W over the strip. Become.

That is, as shown in FIGS. 5 (a), 5 (b) and 5 (c), after the small diameter portion s1 of the seal pipe s has once expanded greatly, when the insertion cylinder 27 returns, the seal pipe s Due to the return elasticity, the entire seal pipe s is in the standard mounting position O
However, in response to the operation signal from the control circuit 30, the insertion cylinder 27 is reciprocated at least two times via the electromagnetic switching valve 29 to move the seal tube s to the predetermined position of the electric wire. Since the seal pipe s is attached, the return due to the extension of the seal pipe s is eliminated, and the entire seal pipe s is attached to the reference attachment position.

Therefore, as shown in FIG. 6, after the seal tube s is inserted into the electric wire W, the terminal T can be crimped to the proper position.

[0025]

As described above, according to the present invention, the seal tube in the magazine is pushed by the pusher to move to the vacuum suction section, and the vacuum suction section temporarily sucks the seal tube. At the same time, the lifting cylinder device lowers the insertion head from above to insert the seal tube into the opening, and the insertion head is turned to rotate about 90 ° through the cylinder device and each sector gear meshing with each other. ,
When inserting the seal tube into the electric wire, the insertion cylinder is reciprocated at least two times to mount the seal tube at a predetermined position of the electric wire. Therefore, the return action due to the extension of the seal tube is eliminated, and the entire seal tube is mounted as a standard It will not be pulled back from the position, and not only can the terminal be crimped to the proper position after inserting the seal tube into the wire, but also improve quality, reduce waste and reduce production cost. It has excellent effects such as

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a method of mounting a seal tube according to the present invention.

FIG. 2 is a perspective view showing a configuration of a conventional seal tube mounting method.

FIG. 3 is a cross-sectional view of a main part of a configuration of a conventional method of mounting a seal tube.

FIG. 4 is a view for explaining a conventional method of mounting a seal tube.

FIG. 5 is a view for explaining the operation of a conventional method of mounting a seal tube.

FIG. 6 is a view for explaining an electric wire terminal mounted by a conventional sealing tube mounting method.

[Explanation of symbols]

 1 Machine frame 2 Index table 3 Clamp jig 4 Clamp claw 5 Centering mechanism 6 Base 8 Magazine 9 Pusher 15 Vacuum suction port 18 Direction changing cylinder device 19, 20 Fan gear 21 Insert head 23 Lifting cylinder device 27 Insert cylinder 29 Electromagnetic switching valve 30 Control circuit

Claims (1)

[Claims] 1. A centering mechanism provided with a clamp jig provided on a machine frame for holding an electric wire, and a centering mechanism having a clamp claw, a base provided in the vicinity of the electric wire, and a base vertically installed in the middle of the base. A magazine containing the sealed seal tube, a pusher provided at one end of the base to push the seal tube, and a vacuum suction port attached to the other end of the base to suck the seal tube. And, through the cylinder device and each fan-shaped gear that meshes with each other, it is turned to the holding member directly above the vacuum suction port, and approximately 90 °.
An insertion head provided so as to rotate, an elevating cylinder device provided so as to insert a seal tube into the insertion head, and a reciprocating movement of the insertion head toward a wire in a push holder of the elevating cylinder device. And an insertion cylinder provided so as to insert the sealing tube. When the sealing tube is inserted, the inserting cylinder is reciprocated at least two times to attach the sealing tube to a predetermined position of the electric wire. A method of installing a seal tube characterized by.