JPH0956029A - Electrical cable feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed a cable while dealing with the outer diameter thereof quickly by varying the interval of a pair of feed rollers turning while clamping the cable. SOLUTION: A base 1 is secured firmly by means of a rope coupled with a post driven into the ground and then a motor M is conducted. Consequently, chain gears G, G are turned by means of a chain 4 thus turning the shafts 3A, 3B and a pair of feed rollers 7, 7 with predetermined torque in reverse directions at a low speed of 10-20r.p.m. When the starting end of a cable is fed between the rollers 7, 7 from the biting rotation side, the rollers 7, 7 are fitted well to the cable through resiliency thereof and bent while resisting against the inner pressure thus feeding the cable Ca in the direction connecting the cable guide members 10, 10. Consequently, the cable Ca can be fed stable without deviating from between the rollers 7, 7 unnecessarily while dealing with the outer diameter thereof quickly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cable feeding device for continuously feeding various electric cables when laying signal cables for various communications, optical fiber cables, and high-power high-voltage cables. This is an improvement that allows the spacing between the two delivery rollers to be changed according to the diameter.

[0002]

2. Description of the Related Art As a cable feeding device of this type, there has been conventionally proposed, for example, Japanese Patent Application Laid-Open No. 6-1.
There is one disclosed in Japanese Patent No. 53355. According to this conventional technique, in a cable feeding device for feeding a cable between a pair of elastic rollers in a line length direction by the rotational force of the elastic rollers, a pair of pivot shafts pivotally supported by a bearing on a base. Helical gears of different tooth flank directions are respectively fitted to the lower part of the rotary gear, and other helical gears individually meshing with the respective helical gears are fitted to the rotary shaft laterally pivoted on the base and provided on the rotary shaft. Is capable of being rotated by a rotational force of a motor by a slip clutch, and a delivery roller made of a hollow elastic material having a substantially spherical surface is attached to an attachment cylinder fitted on the upper part of the pair of pivots. An electric cable feeding device which is attached by means of fasteners and in which cable guide members are pivotally provided horizontally on the front and rear upper surfaces of the base on both sides of each of these feeding rollers. That.

[0003]

The above-mentioned conventional technique is an electric cable feeding device capable of feeding the cable smoothly regardless of the type of the electric cable and without causing the cable to be bent or scratched. However, since the distance between the two feed rollers that rotate while sandwiching the cable is invariable with this product, it is necessary to prepare a large number of types according to the outer diameter of the cable. There is a problem that it is difficult to take out the paper from between the rollers.

Further, as a conventional example in which the slack of the chain is absorbed by a tension member formed by a spring, there is, for example, one described in Japanese Patent Application Laid-Open No. 4-317916. In this conventional example, when a large tension is applied to the chain, the spring is activated. Since it stretches and can not drive a large load, it is necessary to separately adopt a chain talmi absorption device with a variable screw wheel, there is a problem that the tension correction operation of the chain is troublesome and the structure is complicated and expensive. It was.

According to the present invention, in order to eliminate the above-mentioned problems, the distance between the pair of feed rollers that rotate while sandwiching the cable is changed, so that the cable feed can be realized in accordance with the outer diameter of the cable and the middle of the cable can be realized. It is also possible to easily remove the work, and by devising so that the movable pivot of the roller can be moved without changing the tension of the chain,
It is an object of the present invention to obtain a cable feeder which can easily and reliably change the roller interval at low cost.

[0006]

The above-mentioned object of the present invention constitutes a cable feeding device for feeding a cable between a pair of elastic rollers in the wire length direction by the rotational force of the elastic rollers while sandwiching the cable. At the same time, a movable pivot that comes in contact with and separates from a fixed pivot that is pivotally supported on the bearing of the base is pivotally supported on the movable frame by the bearing, and this movable frame is provided with a screw shaft and a guide shaft with respect to the base. And a chain gear is attached to the lower portion of each of the pivots, and a chain for rotating these gears in opposite directions is hung on each of the gears to drive the chain. And a predetermined range portion of the chain within the movement range of the chain gear attached to the movable pivot is held in parallel with the movement trajectory of the movable frame. A guide gear for supporting the movable frame is pivotally supported on the movable frame, and a feeding roller made of a hollow elastic material having a substantially spherical surface is attached to a mounting cylinder fitted on the upper part of each of the pivots, and is attached by a holding device such as a holding fixture. In addition, a cable guide member was provided laterally on the base to achieve this.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described with reference to the drawings. First, the basic configuration of the present invention is as shown in FIGS.
As shown in FIGS. 1 and 2, in constructing a cable feeding device for feeding an electric cable between a pair of elastic rollers in the wire length direction by the rotating force of the elastic roller as shown in FIG. A movable pivot shaft 3B that comes in contact with and separates from a fixed pivot shaft 3A pivotally supported on a left bearing 2 of a base 1 that holds a tough plate such as a rectangular metal plate in parallel in a flat box shape Established pivotally through the hole 1A.

Then, the movable frame 11 is provided with a screw shaft 12 and a guide shaft 13 parallel to the base 1.
And displaceably arranged as shown in FIG. 2, FIG. 3, and FIG.
A chain gear G is attached to the lower part of each of the pivots 3A and 3B as shown in FIGS. 1, 2 and 3, and a chain 4 for rotating these gears in opposite directions to each other. Is provided on the chain 4, and a driving gear 5 which is rotated by a known motor M with a reduction gear is meshed with the chain 4 as shown in FIG.

Further, in order to hold a predetermined range portion of the chain 4 within the movement range of the chain gear G attached to the movable pivot 3B in parallel with the movement locus of the movable frame 11 as shown in FIGS. The guide gear g is pivotally supported on the movable frame 11 as shown in FIGS.

That is, the guide gear g is pivotally supported on the lower portion of the lower plate 11B of the cylindrical body 11A which is hung vertically on the female screw base 11a of the movable frame 11 in FIG. 4, and the guide gear g is attached to the lower collar. After being loosely inserted in the cylindrical spacer S, the spacer S is firmly fixed to the lower plate 11B by a set screw n such as a bolt B or a nut with a washer W interposed, and the guide gear g is the same as the chain gear G. It is rotatably mounted at a height.

Then, a hollow elastic material such as a rubber ball having a substantially spherical surface is attached to the mounting cylinders 6 and 6 which are firmly fitted to the upper portions of the respective pivots 3A and 3B by adhesion or screwing as shown in FIG. The produced delivery rollers 7, 7 are attached with holding screws 8 and 9 by means of setscrews n as shown in FIGS. 1 and 2, and each of the delivery rollers 7, 7 is previously provided with the respective pivot shaft 3A, Air is filled from a well-known self-closing valve V provided at the upper part of 3B through the ventilation holes 3a at a pressure of about 1.2 atm, and cable guide members 10, 10 such as elongated rollers and sliding members are provided on the upper surface of the base 1 on both sides thereof. As shown in FIG. 2, FIG. 5 and FIG. 6, it is installed laterally via a pivot 10a or the like.

Next, a specific example in which the movable pivot 3B is moved laterally with respect to the base 1 will be described. As shown in FIGS. 1 and 3, a movable frame 11 in which the movable pivot 3B is pivotally mounted by a bearing 2 is composed of an upper female screw base 11a and a lower base plate 11b firmly fixed to both side surfaces thereof. . The lower portion and the middle portion of the pivot 3B are pivotally supported by the ball bearing type bearing 2 on the lower base plate 11b and the female screw base 11a, respectively, as shown in FIGS.

Further, as shown in FIGS. 2 and 3, a single screw shaft 12 provided horizontally on the upper surface of the base 1 is screwed into each of the screw holes of the female screw base 11a. As shown in FIGS. 1 and 2, the base 1 is firmly pivoted to the bearing seats 1a, 1a, and is rotatably disposed by the rotary operation handle 12a so as not to unintentionally move in the axial direction.

A guide shaft 13 for linearly guiding the female screw base 11 is slidably penetrated as shown in FIGS. 2 and 3, and the shaft 13 is provided with the screw shaft 12. In parallel with the above, the base 1 is firmly and laterally installed as shown in FIGS.

In each of the above figures, reference numeral a indicates a ball or roller in the bearing, reference numeral n indicates a set screw, K indicates a key pin,
All the items indicated by the symbol W are washers for preventing movement in the thrust direction.

The configuration of the present invention is as described above, and its operation will be described below. First, fix the base 1 firmly with a rope or the like connected to a pile driven into the ground,
When the left and right feed rollers are brought close to each other by the handle 12a as shown in FIGS. 1, 5 and 6, and the motor M is energized, the driving force of the motor M causes the driving gear 5 to rotate in the direction of the arrow in FIG. 4, the chain gears G and G are rotated to rotate the pivot shafts 3A and 3B and the pair of feed rollers 7 and 7 at predetermined torques at low speeds of about 10 to 20 RPM and in opposite directions to each other as shown in FIGS. Can be rotated.

When the cable starting end is pushed between the rollers 7 and 7 from the self-feeding rotation side, the feeding rollers 7 and 7 can also be delivered to the outer surface of a thick stranded cable having a large or small cable diameter or a diameter variation such as a twisted cable. 6 is well adapted to its elasticity and is concaved against the internal pressure as shown in FIGS. 6 and 7, and the cable Ca is slightly changed in diameter by rolling frictional force of the concaves 7a, 7a against the cable Ca. Regardless, the cable guide members 10 and 10 can be sent out in the connecting direction as shown in FIGS.

Further, even if the cable Ca sways in the vertical and horizontal directions during the feeding, the downward movement of the cable can be restricted by the cable guide members 10 and 10 as shown in FIG. The movement is caused by the cable feeding concave surface 7 of the feeding rollers 7, 7 as shown in FIG.
a, 7a, or the cable Ca is being fed out due to the cable disengagement prevention action or the cable lowering movement limiting action of the cable guide member 10 (see FIG. 2) accompanying the settlement of the cable Ca due to self-gravity. It is possible to send it out in a stable manner, without escaping delusionally from the space.

Next, in order to cause the cable Ca to escape from between the left and right delivery rollers 7 as at the end of the delivery of the cable Ca, if the cable Ca has been delivered to its end, it can be released as it is. Good. In addition, for removal in the middle of the cable, the movable shaft 3 is rotated by rotating the screw shaft 12 with its handle 12a and moving the movable shaft 3B erected and supported by the movable frame 11 in a direction away from the fixed shaft 3A. Chain gear G
3 can be easily moved to the right in the linear range of the left and right chains 4 by the guide gear g, and the distance between the pair of feed rollers 7 can be widened. While the rollers 7, 7 are rotating or stopped, the intermediate portion of the cable Ca can be pulled up from between the rollers to escape.

Further, even when a cable which is considerably thicker than the above-mentioned cable is fed, by using the gap between the feeding rollers 7, 7 as shown in FIG.
You can perform wire drawing work that adapts to changes in the outer diameter of the cable.

The present invention can of course be used as a feeding device for ropes of ropeways and cables.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The location of the driving gear 5 in the present invention is as follows.
Instead of installing the base 1 on the right side in the previous example, as shown in FIG. 10, it may be installed on the left side of the base 1 together with the motor M with a reducer, but in this case, the driving gear 5 and the movable pivot 3B. As shown in FIG. 10, the idler gear IG on the right side of the base is interposed between the chain gear G and the chain gear G, and the chain 4 is passed through the guide gear g, and the chain 4 is further hooked to the chain gear G of the fixed pivot 3A. As shown in FIG.

In the case of such a construction, although the cable feeding direction is opposite, the chain gear G of the fixed pivot 3A can be directly pulled and rotated through the chain 4 by the driving gear 5 at its close range, The delivery roller 7 can be rotated in the direction of the arrow in FIG. 10 with a more stable required torque, and the delivery of a high-power high-voltage electric cable or the like can be stabilized.

[0024]

Since the present invention is configured as described above, it has the following effects. A pair of left and right cable feed rollers 7, 7 are pivotally erected on bearings 2, 2 via a fixed pivot 3A and a movable pivot 3B, and a movable base 11 to which the movable pivot 3B is attached is attached to the base 1. Since the screw shaft 12 and the guide shaft 13 are arranged so as to be displaceable, the screw shaft 12 is rotated by its handle 12a or the like so that the distance between the pair of cable feed rollers 7 and 7 that rotates while sandwiching the cable is increased. The first effect is that it can be changed easily, and therefore, the cable feeding can be realized in accordance with the outer diameter of the cable, and the disconnecting work in the middle of the cable is easy.

Further, a guide gear g for holding a predetermined range portion of the chain 4 in the moving range of the chain gear G attached to the movable pivot shaft 3B in parallel with the moving path of the movable frame 11 is provided with the movable frame 11. I was pivoted to
Since the distance between the pair of feed rollers 7 and 7 can be changed without changing the tension of the chain 4, there is a second effect that it is advantageous in terms of space and cost.

According to the second aspect, by directly pulling and rotating the chain gear G of the fixed pivot 3A through the chain 4 by the driving gear 5 at its closest distance, it is possible to reduce the load applied to the movable pivot 3B, and thus to send it out. It was possible to add the effect that the rollers 7, 7 could be rotated with a more stable required torque, and the delivery of the electric cables could be stabilized regardless of the size of the electric cable.

[Brief description of drawings]

FIG. 1 is a cutaway elevation view showing an example of an embodiment of an electric cable feeding device according to the present invention.

FIG. 2 is a cut side view showing an example of an embodiment of an electric cable feeding device according to the present invention.

FIG. 3 is a plan view of a main part of the device of the present invention.

FIG. 4 is a cross-sectional view of essential parts showing an example of pivotal support of a guide gear used in this device.

FIG. 5 is a perspective view showing an example of this apparatus.

FIG. 6 is a plan view showing an example of this device.

FIG. 7 is a cutaway elevation view showing an example of use of this device.

FIG. 8 is a cut elevation view in a state different from that of FIG.

FIG. 9 is a cutaway plan view showing a state different from that of FIG.

FIG. 10 is a plan view showing another example of the present invention.

[Explanation of symbols]

 1 Base 2 Bearing 3A Fixed Axis 3B Movable Axis 4 Chain 5 Driving Gear 6 Mounting Cylindrical Body 7 Feeding Roller 8, 9 Holding Tool 10 Cable Guide Member 11 Movable Frame 11a Female Screw Platform 11b Lower Base Plate 12 Screw Shaft 12a Handle 13 Guide Shaft G Chain gear g Guide gear M Motor n Set screw

Claims (2)

[Claims] 1. A cable feeding device for feeding a cable between a pair of elastic rollers by a rotational force of the elastic roller while sandwiching the cable, and a fixed pivot shaft pivotally erected on a bearing 2 of a base 1. A movable pivot 3B that moves toward and away from 3A is pivotally supported by the bearing 2 on the movable frame 11, and
The movable frame 11 is disposed so as to be displaceable with respect to the base 1 by a screw shaft 12 and a guide shaft 13,
A chain gear G is attached to the lower part of each of the pivots 3A and 3B, and a chain 4 for rotating these gears in opposite directions is hung on each of these gears, and a driving gear 5 is attached to the chain 4. The movable frame 11 includes a predetermined range portion of the chain 4 which is provided in mesh with each other and within a moving range of the chain gear G attached to the movable pivot shaft 3B.
A hollow elastic material having a substantially spherical surface on the mounting cylinders 6 and 6 fitted to the upper portions of the pivots 3A and 3B, and having guide gears g that are held parallel to the movement locus of Hold the feeding rollers 7,7 made of
An electric cable feeding device in which a cable guide member 10 is horizontally provided on the base 1 while being attached by a fastener such as. 2. The electric cable feeding device according to claim 1, wherein the chain gear G of the fixed pivot 3A is directly pulled and rotated by the rotational force of the driving gear 5 via the chain 4.