JPS6118495B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for winding a cable in which a plurality of insulated core wires are twisted together and a plastic sheath is provided around the outer periphery.

Various automatic cable alignment and winding devices have been proposed so far.

However, in cables such as communication cables that have a plastic sheath on the outer periphery of a cable core made by twisting multiple insulated core wires, undulations occur in the cable due to internal stress that tries to untwist it. When winding onto a drum, there are situations in which it runs over adjacent pre-wound cables, or the distance between the windings is too large, making automatic alignment winding impossible.

An object of the present invention is to provide a novel winding method that can eliminate the adverse effects of cable waviness during winding.

The present invention uses a rotating pulley having a diameter substantially equal to or larger than the diameter of the winding drum of the winding drum and a width smaller than the outer diameter of the cable as a means for guiding the cable to the winding position. , by rotating the take-up drum in the opposite direction to the rotating direction of the rotary pulley, the cable is wound around approximately half the circumference of the rotary pulley, giving the cable a bend in the opposite direction to the bending that is applied to the cable when it is wound around the take-up drum. The rotating pulley reciprocates between the flanges of the winding drum, and winds the cable while adjusting the distance between the rotating pulley and the winding drum depending on the thickness of the cable.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 is an explanatory plan view, FIG. 2 is an explanatory side view, and FIG. 3 is an explanatory front view of the rotary pulley.

1 is a cable, 2 is a winding drum, and the winding drum 2 consists of a winding drum 3 and a collar 4. 5 is a stand that supports the winding drum 2;
Further, the winding drum 2 is moved up and down while being supported by a hydraulic lifting device 11. 6 is a screw shaft, and 7 is a traverser body, and the traverser body 7 is adapted to move from side to side by rotation of the screw shaft 6. A cable guide roll 8, an arm 9, and a rotary pulley 10 are attached to the traverser body 7, and a traverser T is constituted by these and the screw shaft 6.

In this configuration, the winding drum 2 is raised to bring the winding drum 3 closer to the rotary pulley 10, and the cable 1
By winding up the cable 1 while rotating the winding drum 2 in a direction opposite to the direction of rotation of the rotary pulley 10, which rotates as the cable runs, it is possible to prevent the adverse effects of cable waviness.

In other words, the cable 1 is wound around the rotary pulley 10 over almost half its outer circumference, and the cable is bent in the opposite direction to the bending when the cable is wound around the winding drum. By being guided as close as possible by the rotary pulley 10, the winding can be accurately wound to a predetermined position on the winding drum 3, and it is possible to prevent the winding from running over or leaving too large an interval between windings.

If the winding drum 2 is rotated in the same direction as the rotation direction of the rotating pulley 10, the length of the cable 1 wound around the rotating pulley 10 will be shortened, and the undulations will not be sufficiently alleviated, and the cable 1 will rotate. The distance from leaving the pulley 10 to winding around the winding drum 3 increases, making it impossible to wind the winding at a predetermined position on the winding drum 3.

The diameter of the rotating pulley 10 is determined from the viewpoint of undulation mitigation effect and prevention of adverse effects on the cable 1.
It is preferable that the diameter be approximately equal to or slightly larger than the diameter of the winding drum 3.

The cable 1 is wound onto the winding drum 3 while rotating the screw shaft 6 so that the traverser main body 7 moves laterally by the outer diameter of the cable 1 with each rotation of the winding drum 2, and the cable 1 is wound onto the winding drum 3. When winding is completed, the screw shaft 6 is reversed, the traverser body 7 is moved in the opposite direction, and the second stage winding is started. At this time, at the same time as the first stage winding is completed, or slightly earlier, the hydraulic lifting device 11 is operated to lower the winding drum 2 by the outer diameter of the cable 1, thereby lowering the rotary pulley. 10
The distance between the cable layer and the cable layer wound in the first stage is
Rotating pulley 10 and winding drum 3 during winding of the stage
The cable 1 can be wound into a predetermined position.

Each time the winding of each stage is completed, the winding drum 2
is lowered by the outer diameter of the cable 1, and the required length of the cable 1 is wound up.

By the way, from the winding of each stage to the start of winding of the next stage, the rotating pulley 10 comes into contact with the collar 4, making it impossible to wind tightly.

In the present invention, the width W of the rotating pulley 10 is
This drawback is solved by making the outer diameter D smaller than the outer diameter D of the outer diameter D. That is, by setting W<D, even if the traverser body 7 is moved in the opposite direction after the cable 1 is wound until it contacts the collar 4, the rotary pulley 10 will not come into contact with the collar 4, and the winding will be prevented. This allows for complete tight winding up to the ends of the take-up drum 2.

Note that in the present invention, the winding drum may be moved laterally and the rotating pulley may be fixed, and instead of moving the winding drum up and down, the rotating pulley may be moved up and down. It is not limited to.

As explained above, according to the present invention, the undulation of the cable is alleviated by the rotating pulley, and since the distance between the rotating pulley and the winding drum can be freely adjusted, the cable can be guided close to the winding drum.
It becomes possible to wind the cable in a predetermined position,
Furthermore, by making the width of the rotating pulley smaller than the outer diameter of the cable, it is possible to prevent winding irregularities at the end of the winding drum, and it is possible to automatically wind the cable in an aligned manner, which was conventionally impossible. It becomes like this.

[Brief explanation of the drawing]

The attached drawings are explanatory views of one embodiment of the present invention, in which Fig. 1 is a plan explanatory view, Fig. 2 is a side explanatory view,
FIG. 3 is an explanatory front view of the rotary pulley. 1: cable, 2: winding drum, 3: winding drum,
4: Tsuba, 5: Stand, 6: Spiral shaft, 7: Traverser body, 8: Guide roll, 9: Arm, 10: Rotating pulley, 11: Hydraulic lifting device, T: Traverser.

Claims (1)

[Claims] 1. In a method of winding a cable with a plastic sheath on the outer periphery of a twisted plurality of insulated core wires on a winding drum, a wire approximately equal to the diameter of the winding drum of the winding drum is used as a means for guiding the cable to the winding position. By using a rotating pulley with a diameter larger than this and a width smaller than the outer diameter of the cable, and rotating the take-up drum in the opposite direction to the direction of rotation of the rotating pulley, the cable is The cable is wound around half its outer circumference and guided while giving the cable a bend in the opposite direction to the bending when it is wound around the winding drum, and the rotary pulley moves back and forth between both flanges of the winding drum and bends the cable as it becomes thicker. A cable winding method characterized by winding the cable while adjusting the distance between the rotating pulley and the winding drum accordingly.