JPH08289431A - Guide roller for gripping cable - Google Patents

Abstract

PURPOSE: To facilitate the centering by fixing a pair of hourglass type guide rollers to supporting bases provided such that they can slide independently through linear guides mounted on a supporting plate and then sliding the guide rollers on a linear guide by turning a threaded rod thereby gripping a cable while retaining the central axis. CONSTITUTION: A guide roller supporting plate 2 is provided with two parallel linear guides 4 for permitting independent sliding of supporting bases 3A, 3B. The supporting bases 3A, 3B are fixed with a pair of hourglass type guide rollers 1A, 1B. A threaded rod 5 comprises a first half part threaded forward 5A and a second half part threaded reversely 5B being screwed into screw holes. When the threaded rod 5 is turned, the supporting bases 3A, 3B advance simultaneously toward a cable C and grip the cable C while retaining the central axis. With such structure, the centering is facilitated and the tapered part or the level difference part, as well as the linear part, of a cable can be guided while retaining the central axis.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable gripping guide roller used for cutting a cable insulator when assembling an intermediate connecting portion and a terminal connecting portion of a plastic power cable such as a CV cable.

[0002]

2. Description of the Related Art Cutting of a cable insulator in assembling an intermediate connecting portion or a terminating connecting portion of a CV cable or the like has hitherto been roughly carried out by a manual insulator cutting device and then manually operated by using a glass piece. I was finishing up. However, in such a conventional manual work, (1) individual differences are likely to occur. (2) Advanced skills are required. (3) Foreign substances such as glass fragments are easily mixed. There is a problem such as.

For this reason, attempts have been made to mechanize the CV cable insulator cutting work, but it is impossible to manufacture the cable cross section into a perfect circular shape, and it is necessary to completely straighten the cable before cutting the cable. It is necessary to grip the cable with a guide roller or the like at the cable cutting site because the surface roughness of the cutting surface is not deteriorated by cutting vibration.

FIG. 6 is a side view showing a partial cross section of an example of a cable insulator cutting device. As shown in the drawing,
The outer semiconductive layer C1 of the cable C is exposed. Then, near the exposed end of the outer semiconductive layer C1, the base frame 2
1 is grasped by a cable grasping metal fitting 24 supported by a supporting device 24a fixed to one end of the base frame 21, while the vicinity of the root of the outer semiconductive layer C1 is supported by a supporting device 23a fixed to the other end of the base frame 21. It is gripped by the metal fitting 23. An electric frame 25 is provided between the two cable grips 23, 24 so as to be movable on the guide portion 22 provided on the base frame 21 in the axial direction of the cable.
A rotatable cutting unit 2 with a cutting tool 27 attached to it
6 and a guide roller 29 for holding the axis of the cable are installed to rotate the cutting unit 26 and the electric table 2.
By the axial movement of 5, the cutting tool 27 is configured to cut the cable insulator C2 and the outer semiconductive layer C1.

7A and 7B are explanatory views of an example of a conventional cable gripping guide roller. FIG. 7A is a front view and FIG. 7B is a right side view of FIG. 7A. As shown in the drawing, the guide roller support plate 31 has a plurality of support portions 32 and a cable C.
Are provided at equal intervals on the circumference of the coaxial circle, and screw rods 33 are attached to these support portions 32. A guide roller 35 is attached to the end of the screw rod 33 and is housed in a holding metal fitting 34 having a screw hole. Then, the guide roller 35 is independently tightened by the screw rod 33 to grip the cable C.

[0006]

In the above-mentioned conventional cable gripping guide roller, since each guide roller is independently tightened by the screw rod to grip the cable, the external semiconductive layer and the cable are connected like a prefabricated joint. In the case of linear cutting of an insulator, it was sufficient to keep a constant outer diameter, so that it was applicable. However, even in this case, since each guide roller is independently adjusted, it takes time to align the central axes, and there is a problem in workability.

Further, in the extrusion mold type joint, since it is necessary to cut the end portion of the insulator into a taper shape, the guide roller simply tightened with the screw rod cannot hold the cable. Furthermore, when attempting to perform mechanical cutting again with a prefabricated joint, with a guide roller that is tightened with a screw rod, the guide roller cannot follow the step between the cutting surface and the outer semiconductive layer surface, and in practice, twice. However, there is a problem in that the flexibility of the connection work is impaired because the cutting is impossible.

[0008]

DISCLOSURE OF THE INVENTION The present invention solves the above problems and provides a guide roller for grasping a cable, in which center axis alignment is easy, and moreover, a tapered cutting and a guide roller can easily follow a step portion. The feature is that a pair of hourglass-shaped guide rollers are attached to a support stand that is independently slidable using a linear guide provided on a guide roller support plate as a guide, and a screw rod is rotated. Thus, the support table is configured to slide on the linear guide, hold the central axis, and hold the cable.

[0009]

In the cable gripping guide roller of the present invention, by using a pair of hourglass-shaped guide rollers as the guide rollers, it is possible to easily perform the tapered cutting at the end portion of the cable insulator, and to perform the double cutting. In this case, it is easy for the guide roller to follow the step. Further, since the center axis can be easily aligned by rotating one screw rod, the workability is remarkably improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a first embodiment of a cable gripping guide roller of the present invention. FIG.
(B) is a right side view of FIG. As shown in the drawing, two parallel linear guides 4 are provided on the guide roller support plate 2, and support bases 3A and 3B are provided so as to be independently slidable using the linear guides 4 as guides, A pair of hourglass-shaped guide rollers 1A and 1B are attached to these support bases 3A and 3B. The one support base 3A is provided with a forward screw hole, and the other support base 3B is provided with a reverse rotation screw hole. Further, one screw rod 5 is attached to the guide roller support plate 2,
Corresponding to the forward screw holes and the backward screw holes, the screw rod 5 has a forward screw 5A and a second screw screw in the opposite direction, which are screwed into the screw holes. There is. Then, by rotating the screw rod 5, the support base 3
A and 3B simultaneously advance with respect to the cable C, hold the central axis, and grip the cable C.

2A and 2B are explanatory views of a second embodiment of the cable gripping guide roller of the present invention. FIG. 2A is a front view, FIG. 2B is a right side view of FIG. FIG. 2C is an explanatory diagram of the rack mechanism. As shown in the drawing, two linear guides 4 are provided on the guide roller support plate 2, and support bases 3A and 3B are independently slidable using the linear guides 4 as guides. A pair of hourglass-shaped guide rollers 1A and 1B are attached to the supports 3A and 3B. Racks 6A and 6B are attached to the support bases 3A and 3B, respectively, and the diameters of the racks 6A and 6B can be changed with one pinion gear 7 fixed to the base while maintaining the central axis. ing. Further, a screw hole is cut in one of the support bases 6B, and the screw rod 8 is arranged between the guide rod support plate 2 and the screw rod fixing plate 9. Then, by rotating the screw rod 8, the support bases 3A and 3B move forward through the rack 6 and the pinion gear, hold the central shaft, and hold the cable C.

3A and 3B are explanatory views of a third embodiment of the cable gripping guide roller of the present invention. FIG. 3A is a front view and FIG. 3B is a right side view of FIG. 3A. is there. In this embodiment, the screw rod 8 of the embodiment of FIG. 2 is omitted, and a spring 10 for generating a force in the direction of gripping the cable C is mounted between the support bases 3A and 3B. As a result, even if the outer shape of the cable insulator changes, the cable guide can be performed while holding the central axis. This spring 10
Must have a spring constant and a stroke that will generate sufficient force at the required diameter difference.

FIGS. 4 and 5 are explanatory views of the fourth and fifth embodiments of the cable gripping guide roller of the present invention. FIG. 4A is a front view and FIG. ) Is a right side view. This embodiment is a combination of the embodiment shown in FIG. 2 and the embodiment shown in FIG. 3, and a screw rod fixing plate 9 for fixing the screw rod 8 can be attached and detached with screws 11.
Therefore, when the straight portion of the cable is to be strongly gripped, it can be gripped by the screw rod 8 as shown in FIG. 4, and when the tapered portion is to be gripped, the screw 11 is removed to fix the screw rod as shown in FIG. By making the plate 9 free, a taper guide is possible by the force of the spring 10.

[0014]

As described above, according to the cable gripping guide roller of the present invention, the center axis can be easily aligned,
It is possible to guide not only the straight line portion of the cable but also the tapered portion or the stepped portion while maintaining the central axis. This allows
It is possible to taper the extruded mold joint of the CV cable and re-cut the prefabricated joint. Therefore C
It is effective when used for forming an intermediate connection portion or a termination connection portion of a V cable.

[Brief description of drawings]

FIG. 1 is an explanatory view of a first embodiment of a cable gripping guide roller of the present invention, FIG. 1 (a) is a front view, and FIG. 1 (b) is a right side view of FIG. 1 (a).

2A and 2B are explanatory views of a second embodiment of the cable gripping guide roller of the present invention. FIG. 2A is a front view, FIG. 2B is a right side view of FIG. 2A, and FIG. (C) is an explanatory view of a rack mechanism.

3A and 3B are explanatory views of a cable gripping guide roller according to a third embodiment of the present invention. FIG. 3A is a front view and FIG. 3B is a right side view of FIG. 3A.

FIG. 4 is an explanatory view of a fourth embodiment of a cable gripping guide roller of the present invention, FIG. 4 (a) is a front view, and FIG. 4 (b) is a right side view of FIG. 4 (a).

5A and 5B are explanatory views of a cable gripping guide roller according to a fifth embodiment of the present invention. FIG. 5A is a front view and FIG. 5B is a right side view of FIG. 5A.

FIG. 6 is a side view showing a partial cross section of an example of an insulator cutting device for a plastic power cable.

FIG. 7 is an explanatory view of a conventional cable gripping guide roller, FIG. 7 (a) is a front view, and FIG. 7 (b) is a right side view of FIG. 7 (a).

[Explanation of symbols]

 C cable 1A, 1B 1 pair of drum-shaped guide rollers 2 Guide roller support plate 3A, 3B support base 4 Linear guide 5 Screw rod 6 Rack 7 Pinion gear 8 Screw rod 9 Screw rod fixing plate 10 Spring 11 Screw

Claims (3)

[Claims] 1. A pair of hourglass-shaped guide rollers is attached to a support base slidably provided independently by using a linear guide provided on a guide roller support plate as a guide, and the support base is rotated by rotating a screw rod. Is configured to slide on a linear guide and hold a central axis to hold a cable, and a cable holding guide roller. 2. The forward support screw hole according to claim 1, wherein one of the support bases is provided with a forward screw hole, and the other support base is provided with a reverse screw hole to correspond to the forward and reverse screw holes. A cable-holding guide roller, characterized in that a screw rod having a screw in the forward direction and a screw in the reverse direction in the other half is screwed into the screw hole and the screw rod is rotated. 3. A rack according to claim 1, wherein a rack is attached to each of said support bases, a screw rod is arranged between one of said support bases and a guide roller support plate, and said screw rod is rotated to rotate said screw rod and said space between them. A guide roller for grasping a cable, characterized in that a support base slides on a linear guide through the movement of a pinion gear arranged on the guide roller.