JPH0537980Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device that can automatically fix the starting end of a cable winding to a cable drum.

[Conventional technology]

The sheath extrusion molding operation in cable manufacturing is performed by guiding the cable a from a sheath extrusion molding machine (not shown) to a take-off machine 21, as shown in FIG.
The material is wound up from this take-up machine 21 to a wind-up machine 23 via a traverser 22. This winding machine 23 is equipped with a plurality of cable drums 1, and when one cable drum 1 is fully wound, an operator cuts the cable a at the exit of the winding machine 21 and leaves the end a' of the cable in the air. As shown in FIG. 5, the cable is guided to the cable drum 1 from the outlet 2 of the cable drum collar 1a and fixed to the outer fixing device A, and the winding drum is switched.
By rotating the cable drum 1, the cable a is continuously wound.

Since the cable a is continuously wound in this way, the end of the cable winding on the cable drum 1
It is necessary to fix a′ smoothly. For this reason, the applicant of the present application proposed a cable winding start end fixing device A shown in FIGS. 6 to 8 in Japanese Utility Model Application No. 63-56163.

As shown in the figure, this device A has a winding start end outlet 2 formed on the side surface of a cable drum flange 1a through which a cable winding start end a' is led out from the inside to the outside. A cylindrical body 3 is provided in the lead-out direction of the cable winding start end a', a notch hole 4 is formed in the circumferential direction of the cylindrical body 3, and a claw 5 that protrudes and retracts into the cylindrical body 3 through this notch hole 4 is provided. Swingable cylinder 3
It is installed on. A piston plate 7 is provided inside the cylinder 3 via a bearing 6 so as to be movable in the cylinder axis direction.
A locking rod 9 is led out from the piston plate 7 to the outside of the cylinder 3 through a long hole 8 in the cylinder axis direction, and the locking rod 9 is bent toward the notch hole 4 when it exits the long hole 8. It has been done.

Therefore, when the cable winding start end a' is inserted into the cylindrical body 3 as shown in FIGS. 8
As shown in Figure b, the piston plate 7 is pushed, the locking rod 9 is disengaged from the claw 5, and the spring 10 causes the claw 5 to enter the cylinder body 3 through the notch hole 4 and end the cable winding.
The sharp protrusion 5a bites into a' and chucks.

[Problem that this idea attempts to solve]

In the above conventional technology, the claw 5 is directly rod-shaped, and the coil spring 10 that biases the claw 5 is
Since it is provided in the space between the spring 10 and the mounting flange of the cylindrical body 3, the spring 10 is bulky and foreign objects can easily enter the spring 10, resulting in unstable operation.

Further, since there is no automatic return means for the piston plate 7, the piston plate 7 must be manually moved after the cable winding start end a' is pulled out, which is troublesome.

The present invention takes the above points into consideration, and aims to achieve compactness, reliable operation, and automatic return of the piston plate.

[Means to solve the problem]

In order to solve the above problems, in the present invention, in the above conventional technology, the pawl is formed into an arc shape along the notch hole, and a torsion spring that biases the pawl is inserted into the swing axis of the pawl. , and the piston plate is urged by a spring toward the cable winding start end outlet, and the locking rod is positioned at the end of the elongated hole of the cylindrical body on the outlet side, as in the conventional case. When the nail reaches the notch hole and comes into contact with the inner surface of the claw, and is located at the end opposite to the outlet side end of the elongated hole, the tip thereof retreats from the notch hole.

[Effect]

With this device constructed in this manner, when the cable winding start end is inserted into the cylinder, the piston plate is pushed by the end surface,
The locking rod is removed from the claw, and the spring causes the claw to enter the cylindrical body through the cutout hole, and its sharp protrusion bites into the beginning end of the cable winding, causing chucking. In this state,
Turn the cable drum to wind the cable.

The starting end of the cable winding is pulled out by swinging the claw against the spring to release the biting of the sharp protrusion. When the piston plate is pulled out, the piston plate is returned to its original position by the spring, and the tip of the locking rod faces the notch hole, thereby preventing the pawl from sinking into the notch hole.

〔Example〕

An embodiment is shown in FIGS. 1 to 3, and since the same reference numerals as above indicate the same parts, detailed explanation thereof will be omitted.

The cylindrical body 3 into which the cable winding start end a' is introduced is welded to a mounting plate 11 as shown in FIGS. 1a, the cylinder body 3 is attached to the cable drum 1.

The pawl 13 facing the notch hole 4 is arc-shaped so as to be as bulky as possible along the cylinder 3, and one end thereof is fixed to the swing shaft 14. The swing shaft 14 is supported by a bearing 15 fixed to the cylinder 3 and is prevented from moving in the axial direction.
3 swings in the direction of coming in and out of the notch hole 4 without swinging laterally. Further, a torsion spring 16 is fitted into the swing shaft 14, and both ends of the spring 16 are fixed to the bearing 15 and the pawl 13. The spring 16 causes the pawl 13 to move in and out of the notch hole 4. energized.

The piston plate 7 and the locking rod 9 have the same structure as described above, but are urged in the opening direction of the cylinder 3 (in the direction of the outlet port 2) by the spring 17, and are shown in solid lines in FIGS. 1 and 2. As shown, the cable winding start end a' is not pushing the piston plate 7 (the cable winding start end a' is not pushing the piston plate 7).
a' is not inserted into the cylinder 3), the locking rod 9 comes into contact with the outlet side end 8a of the elongated hole 8, and its tip 9a reaches the notch hole 4 and locks with the claw 13. ,
The claw 13 is prevented from sinking into the notch hole 4.

From this state, when the cable winding start end a' is inserted into the cylinder 3 and pushes the piston plate 7, the locking rod 9 is moved to the opposite side of the elongated hole 8 from the outlet side end, as shown by the chain line in the figure. It moves to the end 8b, its tip 9a comes off from the claw 13, the claw 13 enters the cylinder 3 through the notch hole 4, and its sharp protrusion 13a bites into the cable winding start end a' and is chucked.

Conversely, pull up the claw 13 and remove the beginning end of the cable winding.
When the biting into a' is released and the end a' is pulled out from the cylinder 3, the piston plate 7 is returned by the spring 17, the tip of the locking rod 9 faces the notch hole 4, and the notch hole 4 of the pawl 13 Inner immersion is prevented.

[Effect of idea]

The present invention is constructed as described above, and the torsion spring is inserted into the pawl swing shaft, so that the presence of the shaft prevents dirt from entering the spring and reduces the risk of malfunction. Furthermore, since the claws are shaped like an arc along the notched holes, they are not bulky and can be made more compact. Furthermore, since the piston plate is automatically returned to its original position, work efficiency is improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of an embodiment of the cable winding start end fixing device according to the present invention attached to a cable drum, Fig. 2 is a cutaway front view of Fig. 1, and Fig. 3 is the same cutaway. Right side view, Figure 4 is a schematic diagram of the cable jacket extrusion molding process, Figure 5 is an enlarged view of the main parts,
FIG. 6 is a perspective view of a main part of a conventional example, and FIGS. 7 and 8 a and b are a cutaway front view and a cutaway side view, respectively, for explaining the same operation. a...Cable, a'...Cable winding start end, 1
... Cable drum, 1a ... Cable drum flange, 2 ... Cable winding start end outlet, 3 ... Cylindrical body, 4 ... Notch hole, 5, 13 ... Claw, 5a, 13
a... Sharp projection, 6... Bearing, 7... Piston plate, 8... Long hole, 9... Locking rod, 10, 17...
Spring, 11... Mounting plate, 12... Metal fitting, 14...
Swing shaft, 15... bearing, 16... torsion spring, 21... pulling machine, 22... traverser,
23... Winding machine.

Claims (1)

[Scope of utility model registration request] A winding start end outlet 2 through which the cable winding start end a' is led out from the inside to the outside is formed on the side surface of the cable drum collar 1a, and a tube in the direction in which the cable winding start end a' is led out from the outlet 2 is formed. A body 3 is provided, a notch hole 4 is formed in the circumferential direction of the cylindrical body 3, and an arcuate pawl 13 that can be penetrated along the notch hole 4 is swingable in the direction of coming in and out of the notch hole 4. A torsion spring 16 is attached to the cylindrical body 3 and attached to its swing shaft 14 to bias the claw 13 in the retracting direction.
A sharp protrusion 13a that can bite into a' is provided, and
Inside the cylinder 3, a piston plate 7 is provided which is biased in the direction of the outlet port 2 by a spring 17 and is movable in the cylinder axis direction. A locking rod 9 is led out through the long hole 8, and this locking rod 9 is bent toward the notch hole 4 at the point where it exits the long hole 8. When located at the outlet side end 8a of the elongated hole 8, its tip 9a reaches the notch hole 4 and comes into contact with the inner surface of the pawl 13, and is located at the opposite end 8b of the elongated hole 8 from the outlet side end 8a. A cable winding start end fixing device characterized in that the tip end 9a of the cable winding start end fixing device is such that the tip end 9a retreats from the notch hole 4 when the cable is wound.