JPH0522819A - Cable drawing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a cable drawing machine that draws the intermediate portions of a plurality of cables and extends the cables. [Structure] The cable drawing machine 10 includes support plates 24 and 26.
A moving table 38 that moves between them is attached. On the moving table 38, a pair of clamps 40 and 42 having a substantially U-shaped cross section are arranged such that their concave portions face each other and are combined to form a substantially circular cable holding portion of an arbitrary size. To be done. The clamp 40 is fixed at an arbitrary position in the contact / separation direction of the clamp 42 by the handle 50, and the clamp 42 is moved in the contact / separation direction with respect to the clamp 42 by the crank 64. On the support plate 26 side, the crank moves the clamp 42 to a position close to the clamp 40, and the cable is clamped between the clamp 42 and the clamp 40. When the clamp 42 is moved to the support plate 24 side in this state, the clamp 42 separates from the clamp 40 by the crank and the cable holding state with the clamp 40 is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable drawing machine used for cable laying work in electrical equipment construction, and more particularly to a cable drawing machine which is arranged in the middle of cable laying and which holds a middle part of the cable and draws it. Regarding line machines.

[0002]

2. Description of the Related Art Generally, a large number of electric wiring cables are laid in the premises of various plants and buildings. With the automation of facilities and centralized management of these cables, the number of flexible control cables with an outer diameter of up to about 20 mm, called fine cables, is overwhelmingly increasing. As a control cable for a small object, there is a 600V-CVV cable (control vinyl-insulated vinyl sheath cable) or the like having a core wire cross-sectional area of ² to 3.5 mm ^{2 and a} number of cores of 2 to 8 cores.

On the other hand, a cable laying path such as a rack, a duct or a trough is provided in the premises so that electric wirings such as the control cable can be accommodated in a lump. When extending a cable to these cable laying paths, the tip of the cable is pulled by an operator or a cable drawing machine, but if the extension distance is long, unnecessary tension is applied to the cable due to its own weight or friction. Does not damage the exterior of the cable, the core wire, etc., and the middle part of the cable is also drawn at a predetermined interval so that the cable can be extended with a light force.

For example, a cable drawing machine for pulling the middle portion of a cable has two tracks 10 shown in FIG. 11A.
There is a caterpillar type wire drawing machine 100 equipped with 2. In this caterpillar-type wire drawing machine 100, the cable 12 sandwiched between two caterpillars 102 is moved by a drive source to form an arrow G.
It is pulled by the caterpillar 102 rotated in the direction, conveyed in the direction of the arrow H, and extended.

Further, as shown in FIG. 11B, there is also a roller type wire drawing machine 106 in which two rollers 104 are provided instead of the track 102. This roller type wire drawing machine 10
6 is also a roller 1 which rotates in the direction of arrow I by the drive of the drive source
It is pinched and pulled by 04, conveyed in the direction of arrow H, and extended.

[0006]

However, in such a conventional cable drawing machine, the cables are drawn one by one, and it is not possible to hold several cables at a time and draw them. It is difficult, and in particular, it is impossible to reliably hold the whole of the plurality of small cables having different outer diameters. For this reason, the work of laying the small cables largely depends on the manual work of the worker and is inefficient.

The present invention has been made in consideration of the above facts, and an object of the present invention is to obtain a cable drawing machine capable of collectively drawing the intermediate portions of a plurality of cables and extending the cables.

[0008]

A cable drawing machine according to claim 1 of the present invention is a cable drawing machine that draws an intermediate portion of a cable and extends the cable, and the recesses of the cable drawing machine are arranged to face each other. A clamp for holding the cable by forming a holding portion for the cable in a substantially circular shape having an arbitrary size by changing the interval between the clamp and a clamp on the side opposite to the cable extending direction along the longitudinal direction of the cable. Drive means for reciprocating between a cable holding position and a cable holding release position on the cable extension direction side; first moving means for relatively moving the clamps in the cable holding position so as to approach each other; Second moving means for moving the clamps in a direction in which the clamps are separated from each other at the clamping release position.

A cable drawing machine according to a second aspect of the present invention is the cable drawing machine according to the first aspect, wherein a crank mechanism is provided as the first and second moving means, and the crank mechanism is used to provide the crank mechanism. It is characterized in that the clamps move relative to each other in the contact and separation directions.

A cable drawing machine according to a third aspect of the present invention is a cable drawing machine that draws an intermediate portion of a cable and extends the cable, and the recesses of the cable drawing machine are arranged so as to face each other. Two sets of clamps for holding the cable by forming a holding portion of the cable in a substantially circular shape, and two sets of the clamps on the opposite side of the cable extending direction along the longitudinal direction of the cable. Drive means for reciprocating between the cable holding position and the cable holding release position on the cable extension direction side, and the clamps provided corresponding to each of the two sets of clamps in the direction of approaching the clamps at the cable holding position. First moving means for relative movement, and second moving means provided corresponding to each of the two sets of clamps and moving in a direction in which the clamps are separated from each other at the cable pinching release position. Means for arranging the two sets of clamps adjacent to each other along the cable extension direction so that the cable clamping position and the cable clamping releasing position do not overlap each other. When one moves from the cable holding position to the cable holding release position, the other clamp moves from the cable holding position to the cable holding position.

[0011]

The cable drawing machine according to claim 1 of the present invention comprises:
A clamp which is approached by the first moving means clamps the cable at the cable clamping position at the end opposite to the cable extending direction. The clamp holding the cable is moved in the cable extending direction by the driving means. At the cable pinch release position at the end on the cable extension direction side, the second moving means separates the clamps to release the pinch of the cable. The clamp in which the clamp of the cable is released is further moved to the cable clamp position on the side opposite to the cable extending direction by the driving means. By repeating the movement of the clamp, the cable is extended at the intermediate portion.

In this clamp, the size of the sandwiching portions formed in a substantially circular shape can be changed by arranging the concave portions facing each other and changing the distance therebetween.
Even with many cables having different outer diameters, the entire bundle of cables can be pressed inward from the outer peripheral direction. This ensures that the cable is clamped by the clamp.

In the cable drawing machine according to the second aspect of the present invention, the clamp mechanism moves the clamps in the contact and separation directions with each other by the crank mechanism. The operation of the crank mechanism can be operated in accordance with the movement of the clamp by the driving means, and the cable can be clamped and released by the clamp of the cable drawing machine with a simple structure.

A cable drawing machine according to a third aspect of the present invention is characterized in that the cable drawing machines are connected along the drawing direction.
The two sets of clamps move in opposite directions along the cable extending direction. As a result, when one clamp pair releases the clamp of the cable and moves in the direction opposite to the cable extension direction, the other clamp moves while clamping the cable, and either clamp clamps the cable and the cable Move in the line direction.

That is, in this cable drawing machine, the cable can be continuously drawn and drawn, and the working time of the cable drawing can be shortened.

[0016]

(Embodiment 1) A cable drawing machine 10 to which the present invention is applied will be described in detail with reference to the drawings. The direction of the large arrow A shown in each drawing indicates the extending direction of the cable 12. The cable 12 is a control cable having an outer diameter of up to about 20 mm.

As shown in FIGS. 1 to 3, the cable drawing machine 10 has a long frame 14 assembled along the cable drawing direction. Mounting bases 16 are formed on the frame 14 so as to project at both ends in the longitudinal direction.
As shown in FIG. 8, the mounting base 16 has a through hole 1
6A is bored, and a bolt (not shown) is inserted and attached to the bracket 18. As shown in FIG. 8, the cable drawing machine 10 can be attached to the cable tray 20 by fixing the bracket 18 to the cable rack 20 which is one of the cable drawing lines.

As shown in FIGS. 1 to 3, in the frame 14 of the cable drawing machine 10, a support plate 24 is provided at a middle portion in the longitudinal direction so as to project at a right angle to the frame 14, and A support plate 26 is provided at the end opposite to the support plate 24 in parallel with the support plate 24 on the same side. This support plate 2
Between the points 4 and 26, a ball screw 28 is provided at the center of the bearing 30.
And is supported by a shaft and is supported by the support plate 24, and the tip end of the support plate 24 projects from the support plate 24 (shown in FIGS. 2 and 3).
In addition, between the support plates 24 and 26, a pair of parallel slide bars 32 are provided so as to sandwich the ball screw 28, and their axes are extended in parallel with the axis of the ball screw 28. The pair of slide bars 32 have a cylindrical shape, and bolts 32A penetrating the support plates 24 and 26 are screwed into both ends thereof.
As a result, each slide bar 32 is supported by the support plates 24, 26.
Is fixed to. Further, as shown in FIG. 5, the ball screw 28 is attached to the frame 14 by the pair of slide bars 32.
It is located on the side.

As shown in FIGS. 1 to 3, the support plate 2
On the side opposite to the ball screw 28 of No. 4, the cable drawing machine 10
A motor 22 serving as a driving means of is attached to the frame 14. A rotating shaft 22A of the motor 22 is connected to the ball screw 28 protruding from the support plate 24 via a coupling 34, and the ball screw 28 is rotated by driving the motor 22.

A frame 14 is provided between the support plates 24 and 26.
A moving portion 36 that moves along the longitudinal direction of is arranged. The moving portion 36 is composed of a moving table 38 that moves by the rotation of the ball screw 28, and cable holding clamps 40 and 42 attached to the moving table 38.

The moving table 38 has a long rectangular shape.
The width direction is arranged along the cable extending direction, and it is a substantially box body in which side plates 38A and 38B are formed toward the frame 14 side. As shown in FIG. 5, the movable table 38 is provided on the side plate 38A in the width direction of the movable table 38.
A ball nut 44 is attached to the frame 14 side corresponding to the ball screw 28, and a linear bearing 46 is attached to the surface of the moving table 38 on the frame 14 side corresponding to each of the pair of slide bars 32. Furthermore, FIG.
As also shown, through holes 44A, 46A are formed in these side plates 38A coaxially with the ball screw 44 and the linear bearing 46, respectively.

The moving table 38 has these through holes 44.
Ball screw 28 and a pair of slide bars 3 to A, 46A
2 is inserted, and the ball screw 28 is the ball nut 4
4, the pair of slide bars 32 are inserted into the linear bearings 46, and are mounted parallel to the surface formed by the frame 14. As a result, the moving table 3
8 is moved along the longitudinal direction of the ball screw 28, that is, the cable extending direction together with the ball nut 44 that moves according to the rotation of the ball screw 28. As shown in FIG. 5, since the ball screw 28 is arranged closer to the frame 14 than the slide bar 32, the moving table 38 is stably moved. This ball screw 28 and slide bar 32
The arrangement may be such that the ball screw 28 is separated from the frame 14 with respect to the slide bar 32.

As shown in FIGS. 2 and 5, the moving table 38 has a cable 1 on the surface opposite to the frame 14.
Clamps 40 and 42 that sandwich the intermediate portion of the two in the longitudinal direction are arranged in pairs. As shown in FIG. 5, the clamps 40 and 42 have a substantially U-shaped cross section along the longitudinal direction of the moving table 38, and the substantially U-shaped recesses face each other. Further, as shown in FIG. 1, the clamp 42 has a rectangular notch 42A at both ends of the U-shape.
And a notch 40 </ b> A is formed in the clamp 40 so as to be combined with the clamp 42. by this,
The clamp 40 and the clamp 42 are assembled so as to be engaged with each other, and the size of the substantially circular cross section formed by facing the recesses of each other can be arbitrarily changed.

By bringing these clamps 40 and 42 close to each other, the plurality of cables 12 are clamped between the respective recesses. A rubber member 43 is attached to the recesses of the clamps 40 and 42, respectively.
The cable 12 is reliably clamped by the frictional force generated between the cable 3 and the outer peripheral surface of the cable 12. The rubber member 43 may be attached over the entire surfaces of the recesses of the clamps 40 and 42.

As shown in FIGS. 1, 2 and 5, a shaft 48 is fixed to the convex portion of the clamp 40 at a substantially U-shaped intermediate portion. The shaft 48 is fitted into the shaft center of the handle 50, and is prevented from being pulled out by a nut 48A screwed to the tip protruding from the handle 50.

The handle 50 is coaxially mounted with a threaded portion 52 having a male screw threadedly engaged with a cylindrical outer peripheral portion. In this handle 50, a handle bracket 54 having a screw portion 56 in which a female screw is screwed on an inner surface of a cylinder is screwed into the screw portion 56 from the outer side to the inner side in the width direction of the frame 14. It is installed. The handle bracket 54 is provided at the end of the moving table 38 in the longitudinal direction to the side plate 38B in the direction opposite to the frame 14,
As shown in FIG. 5, it is attached by a bolt 54A. The handle 50 is rotated to change the amount of insertion of the screw portion 52 into the screw portion 56 so that the handle bracket 54 can be inserted into and removed from the handle bracket 54.

The screw portion 56 of the handle bracket 54
An enlarged diameter portion 56A is coaxially formed on the inner surface opposite to the handle 50. One end of a compression coil spring 58 inserted into the shaft 48 and interposed between the clamp 40 and the screw portion 56 is inserted into the expanded diameter portion 56A. The compression coil spring 58 is configured such that the tip of the screw portion 52 abuts and is pressed by inserting the handle 50 into the screw portion 56 by screwing the handle 50, whereby the clamp 40 is attached in the clamp 42 direction. Urging the cable 1 between the clamp 40 and the clamp 42 by this urging force.
2 is pinched.

As shown in FIG. 6B, the clamp 42 is joined to an end portion on the opposite side of the notch portion 42A to an intermediate portion in the longitudinal direction of a long and substantially rectangular flat plate guide plate 60. As shown in FIG. 6A, this guide plate 60
Are provided along the longitudinal direction of the moving table 38, and slide along the longitudinal direction of the moving table 38 by the pair of guide rollers 62 attached to both ends of the moving table 38 in the longitudinal direction. It is pinched as possible. As shown in FIG. 5, each roller of the pair of guide rollers 62 has a groove 62A formed in the outer peripheral portion, and the peripheral edge of the end of the guide plate 60 is inserted into the groove 62A. Also, this guide plate 60
At the middle portion in the longitudinal direction of the
Is formed, and the widened portion 60A is disposed between the two pairs of guide rollers 62, whereby the guide plate 60
Of the guide roller 62 from the guide roller pair 62 is prevented. In addition,
The handle bracket 54 is provided with a rectangular hole 54B through which the tip of the guide plate 60 can be inserted, and the guide plate 6
It is designed not to block the movement of 0. As a result, the clamp 40 can be moved within the range shown by the solid line and the chain double-dashed line in FIGS. 5 and 6A.

As shown in FIGS. 2, 3 and 5, the link 6 is provided on the convex side at the substantially U-shaped intermediate portion of the clamp 42.
One end of 4A is connected and pivotally supported. This link 64
The other end of A is pivotally supported by a link 64B having one end fixed to the tip of the shaft 66, whereby a crank 64 is formed. The shaft 66 is the moving table 3
Bearing 68 fixed to the outside of the side plate 38A in the longitudinal direction of FIG.
Is inserted and is pivotally supported. Crank 64 and clamp 4
The reference numeral 2 forms a slider crank mechanism in which the clamp 42 is moved in the contacting / separating direction with the clamp 40 by the rotation of the shaft 66. Link 64 of this crank 64
The rotation of B is limited by blocks 74, 76, 78 described later, and the clamp 42 is brought closer to the clamp 40 by being rotated in the direction of arrow B in the vicinity of the support plate 26 shown in FIG. In the vicinity of the support plate 24, the clamp 42 is separated from the clamp 40 by being rotated in the arrow C direction. As a result, in this embodiment, the position reaching the support plate 26 side is the cable holding position, and the position reaching the support plate 24 side is the cable holding release position.

The other end of the shaft 66 of the slider crank 64 is projected from the bearing 68 toward the frame 14, and one end of an arm 70 is fixed to the tip. A roller 72 is pivotally supported on the other end of the arm 70.

On the other hand, as shown in FIGS. 2 and 7A,
In the frame 14, a rectangular block 74 corresponding to the roller 72 of the arm 70 is provided near the support plate 26.
4 is attached to a bracket 74A that is laid along the width direction. Further, a long rectangular block 76 is attached to one end of the frame 14 in the width direction with its longitudinal direction aligned with the longitudinal direction of the frame 14. Figure 7
As shown in B, the distance between the block 74 and the block 76 is such that the roller 72 can be inserted therethrough.

As shown in FIG. 7A, the moving table 3
When 8 is moved to the support plate 26 side, the roller 72 separated from the block 76 contacts the outer periphery of the block 74,
Further, when the moving table 38 is moved, the roller 72 moves along the outer periphery of the block 74 and enters between the block 74 and the block 76. This roller 72
The arm 70 is rotated in the direction of arrow B in accordance with the movement of.
In this state, the slider crank 64 has the clamp 42
Is set to a position slightly returned from the state where the clamp 42 is maximally approached to the clamp 40, and even if the clamp 42 is pushed in the direction away from the clamp 40, the movement of the clamp is blocked because the roller 72 is in contact with the block 76. Has become.

In the vicinity of the support plate 24 of the frame 14, a block 78 having a triangular notch 78A formed on the opposite side of the support plate 24 is arranged adjacent to the block 76. When the moving table 38 is moved to the support plate 24 side, the roller 72, which is brought into contact with the block 76 and moved along with this movement, is moved by the block 78 in the direction away from the block 76. ,
Along with this, the arm 70 is rotated together with the shaft 66 in the arrow C direction.

On the other hand, as shown in FIGS. 2 and 3, a pair of shafts 82 pivotally supporting a large number of rollers 80 are provided at the ends of these support plates 24, 26 opposite to the frame 14.
Is projected. Further, as shown in FIGS. 3 and 4, a pair of brackets 84 project from the vicinity of the pair of shafts 82 toward the side opposite to the cable extending direction on the support plates 24, 26, and these pair of brackets 84 A shaft 88, which supports a large number of rollers 86, is hung between the brackets 84. In the cable drawing machine 10, a cable guide 89 is formed by these rollers 80 and 86, and the cable 12 guided by these cable guides 89 is slid by a light force, and the support plate 24 does not vary. , 26. The intermediate portion of the cable 12 hung over the two sets of cable guides 89 passes between the clamps 40 and 42 (not shown). In the cable drawing machine 10, the cable 12 is inserted between the pair of shafts 82 provided on the respective support plates 24, 26 to support the support plates 24,
The cable 12 is stretched over the cable 26, and the cable 12 can be smoothly moved in the cable extending direction by a large number of rollers 80 and 86. The motor 22 is covered with a cover 14A so as not to come into contact with the cable 12 moving along the extending direction.

As shown in FIG. 1, the cable drawing machine 1
0 is fixed by a bracket 18 to one end in the width direction of the cable tray 20 which serves as a cable laying path. Further, the cable drawing machine 10 is configured so that the rotation including the rotation direction is controlled by a control device (not shown). The control of the rotation of the motor 22 is
It may be performed by a limit switch or the like (not shown) provided on the frame 14. That is, the moving table 38 is connected to the end of the frame 14 on the cable extending direction side,
Detect the state of being located at the opposite end,
When either of them is detected, the motor 22 once stops rotating and rotates in the opposite direction to the previous one. The control device (not shown) controls driving and rotating directions of the motors 22 of the plurality of cable drawing machines 10. Further, this control device is rotated so that the moving table 38 moves in the cable extending direction when the driving of the motor 22 is started.

Next, the operation of this embodiment, that is, the drawing of the cable 12 using the cable drawing machine 10 will be described. As shown in FIG. 8, the cable drawing machine 10 is fixed by a bracket 18 attached to one end in the width direction of a cable tray 20 that serves as a cable laying path. Further, the cable drawing machines 10 are arranged in the cable tray 20 at regular intervals, and these cable drawing machines 10 are connected to the same control device and are connected to the respective cable drawing machines 10. Operations are synchronized.

The cable 12 is stretched between the guides 89 of the cable drawing machine 10 and the pair of clamps 40,
Insert between 42. Then, the clamp 42 is moved to the clamp 40 side. At this time, as shown in FIG. 2, the crank 64 is rotated in the arrow B direction so that the roller 72 contacts the block 76. As a result, the crank 42 changes from the state shown by the chain double-dashed line in FIG. 5 to the state shown by the solid line, and movement in the direction away from the crank 40 is blocked. Further, the handle 50 is rotated to bring the clamp 40 close to the clamp 42,
The cable 12 is clamped between 42. By rotating the handle 50, the compression coil spring 58 provided between the screw portion 52 of the handle 50 and the clamp 40 is contracted, and the clamp 40 is biased toward the clamp 42 (two-dot chain line in FIG. 5). From the state shown in to the state shown by the solid line). The clamps 40 and 42 clamp the cable 12 by the biasing force of the compression coil spring 58.

As shown in FIG. 5, a pair of clamps 4
The clamp of the cable 12 by the clamps 0, 42
The cross section of 42 is formed in a substantially U shape, and the substantially circular sandwiching portion is formed at an arbitrary interval. Therefore, by changing this interval, even if a bundle of a plurality of cables 12 having different outer dimensions, the entire bundle is formed. Since it is pressed inward from the outer peripheral direction, it can be reliably sandwiched.

In FIG. 8, the motor 22 is driven in the cable extending direction by a control device (not shown) while the cable 12 is clamped. The driving of the motor 22 rotates the ball screw 28, whereby the moving table 38 moves in the cable extending direction, and the cable 12 clamped by the pair of clamps 40 and 42 is pulled. Further, the cable 12 is smoothly drawn by the cable guide 89 provided in the cable drawing machine 10.

When the moving table 38 is moved to the vicinity of the support plate 24, the roller 72 moved along the block 76 moves while contacting the notch 78A of the block 78 as shown by the chain double-dashed line in FIG. 7A. Then, the arm 70 has an arrow C.
Is rotated in the direction. By the rotation of the arm 70, the crank 64 is rotated as shown in FIG. 2 and the clamp 42 is moved in the direction away from the clamp 40 as shown by the chain double-dashed line, and the distance between the pair of clamps 40, 42 is increased. The pinching of the perforated cable 12 is released.

When the moving table 38 moves to the support plate 24 side, a limit switch (not shown) detects it, and the controller once stops the rotation of the motor 22 and then reversely rotates the motor 22. As a result, the movable table 38 is released in a state where the clamp of the cable 12 by the clamps 40 and 42 is released.
Moves in the direction opposite to the cable extending direction, that is, to the support plate 26 side.

As shown in FIG. 5, the moving table 38
Is moved to the vicinity of the support plate 26, the roller 72 separated from the block 76 contacts the block 74,
Further, by moving the moving table 38, the block 7
4 slides along the outer circumference of the block 4 and enters between the block 74 and the block 76, and the arm 70 is rotated in the direction of arrow B accordingly. As shown in FIG. 2, this arm 70
The rotation of the crank 64 rotates the crank 64, and the slider crank structure moves the clamp 42 to the clamp 40 side so that the cable 12 is held between the clamps 40 and 42.

Along with the movement of the clamp 42, the moving table 38 reaches the end portion on the side of the support plate 26, and a limit switch (not shown) detects it and the motor 22 can change its rotating direction. As a result, the moving table 38 is clamped by the clamp 40,
The cable 12 is moved in the cable extending direction while the cable 12 is clamped by 42, and the cable 12 is pulled.

The cable drawing machine 10 includes a moving table 38.
By repeating the reciprocating movement along the cable extending direction and the clamping of the cable by the clamps 40 and 42 is repeated, the intermediate portion of the cable 12 is pulled and the cable 12 is extended. Cable 12 produced by this cable drawing machine 10
When the predetermined amount of movement of is finished, the motor 22 is stopped,
Rotate the handle 50 to clamp the clamp 40
From the clamps 40 and 42 to separate these cables 12 from the cable tray 2
The cable 12 is housed in 0 and the laying of the cable 12 is completed.

As described above, the cable drawing machine 10 according to the present embodiment can reliably sandwich and extend a plurality of cables 12 having different outer dimensions. Further, the mechanism for holding the cable 12 of the cable drawing machine 10 includes the clamps 40, 4
2. The structure is simple using the crank 64 and the blocks 74, 76, 78, and can be made lightweight. Further, the cable 12 can be held regardless of the position of the moving table 38 between the support plates 24 and 26.
Further, since the cable 12 is clamped and pulled in the cable extending direction at the start of operation, even if a plurality of cable drawing machines 10 are used, synchronization can be easily achieved, resulting in malfunction. Easy to use without

The block 74 is provided on the support plate 24 side,
By providing the block 78 on the support plate 26 side, the cable drawing direction of the cable drawing machine 10 can be changed.

Further, as shown in FIG. 5, in this embodiment, the handle bracket 54 is attached by the bolt 54A.
Although fixed to the side plate 38B of the moving table 38, the bolt 5
Handle bracket 5 using thumbscrews, etc. instead of 4A
4 may be detachable from the moving table 38. As a result, the cable 12 can be easily attached to or pulled out from the pair of clamps 40, 42.

Further, the clamp 42 is attached to the guide roller pair 6
Although the vehicle is guided and moved in step 2, the present invention is not limited to this and other guidance methods may be used. For example, a groove may be formed in the moving table 38 along the longitudinal direction, and the clamp 42 may be moved along the groove.

(Second Embodiment) FIG. 9 shows a second embodiment of the present invention.
A cable drawing machine 90 according to the above is shown. In the second embodiment, the parts according to the first embodiment are basically used,
The same parts are given the same reference numerals and the description thereof is omitted.

In the cable drawing machine 90, the motor 22 is attached to the intermediate portion of the side plates 24 and 26.
A bevel gear 92 is attached to the rotating shaft 22A. The bevel gear 92 meshes with a bevel gear 94 attached to each of the two ball screws 28, so that the driving force of the motor 22 is applied to each ball screw 28.
Are designed to rotate in opposite directions. A moving table 38 is connected to and supported by each of the ball screws 28.

That is, the cable drawing machine 90 is configured such that two sets of the moving parts 36 of the cable drawing machine 10 are arranged along the cable drawing direction, and these moving parts 36 are driven by the motor 22. Ball screw 28 rotating in opposite directions
Are moved in opposite directions by. Alternatively, the moving portions 36 may be moved in opposite directions by changing the directions of the screw threads of the two ball screws 28 and rotating them in the same direction.

The huddle bracket 54 is attached to the moving table 38 with thumbscrews 96. In addition, the crank 6 that moves the clamp 42
4 is adapted to move the clamp 42 by the rotation of the lever 98. The lever 98 is provided with a stopper (not shown) at a position where the moving table 38 is moved to the end on the cable extension direction side and a position where the moving table 38 is moved to the end on the opposite side so that the lever 98 can be swung. Has become. Further, the moving table 38 is provided with a restricting means for restricting the movement of the lever 98.

Further, in the cable drawing machine 90, at least one of the moving tables 38 is provided with a limit switch (not shown), and the moving table 38 is connected to the end portion on the cable extending direction side and the cable extending direction. The arrival at the opposite end is detected.

As shown in FIGS. 10A-10D,
This cable drawing machine 90 is provided with one clamp 40, 42.
When the cable clamps the cable 12 and moves in the extension direction from the cable clamp position, the other clamps 40 and 42 move in the direction opposite to the cable extension direction with the cable clamp released from the cable clamp release position (Fig. 10A and FIG.
0B). Each of the moving parts 36 further moves to clamp the cable 12 and reach the cable clamp release position, and the clamps 40 and 42 release the clamp of the cable and move the cable 12 in the non-clamped state to the cable clamp position. The reached clamps 40 and 42 clamp the cable 12 by the crank 64 (shown in FIG. 10C).

After this, the clamps 40 and 42 holding the cable 12 move in the cable extending direction,
The clamps 40 and 42 in the non-clamping state move in the opposite direction to the cable extending direction (shown in FIG. 10D).

By repeating this movement by the two sets of moving portions 36, the point P at the intermediate portion of the cable 12 continuously moves along the cable extending direction, and the cable 12 is continuously extended. That is, when the cable 12 is sandwiched and extended by a pair of moving parts 36, the moving part 36 moves the cable 1.
It takes time to return from the cable pinching release position to the cable pinching position in the state where the pinching of No. 2 is released, but in this cable drawing machine 90, two sets of moving parts 36 are provided, and one moving part 36 returns. While moving, the other moving unit 36 can move the cable 12 while sandwiching it.
It is possible to shorten the wire drawing work.

[0057]

As described above, in the cable drawing machine according to the present invention, the cable is clamped and pulled in a substantially circular shape by a pair of clamps formed in an arc shape.
This allows a plurality of cables having different outer dimensions to be clamped together.

As a result, a large number of cables can be extended all at once, and the excellent effect of efficiently laying the cables can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cable drawing machine according to the present embodiment.

FIG. 2 is a plan view showing a cable drawing machine according to the present embodiment.

FIG. 3 is a side view of the cable drawing machine according to the present embodiment.

FIG. 4 is a side view of an essential part of the cable drawing machine according to the present embodiment as viewed from the side opposite to the drawing direction.

FIG. 5 is a cross-sectional view of essential parts along a direction orthogonal to the extending direction.

FIG. 6A is a plan view of relevant parts showing a clamp, and FIG. 6B is a side view showing one clamp.

FIG. 7A is a plan view of a main part of the cable drawing machine, and FIG.
FIG. 7B is a cross-sectional view of essential parts taken along the line 7B-7B in FIG. 7A.

FIG. 8 is a perspective view showing the attachment of the cable drawing machine.

FIG. 9 is a plan view showing a cable drawing machine according to a second embodiment.

10 (A), (B), (C), and (D) are schematic plan views showing the operation of the cable drawing machine according to the second embodiment.

11A and 11B are schematic plan views showing a conventional example of a cable drawing machine.

[Explanation of symbols]

10, 90 Cable drawing machine 22 Motor (driving means) 38 Moving table 40, 42 clamp 64 cranks (first and second moving means) 74 blocks (first means of transportation) 78 blocks (second means of transportation)

Claims (3)

[Claims] 1. A cable drawing machine for pulling an intermediate portion of a cable and extending the cable, wherein the recesses of the cable are arranged to face each other and the distance between the recesses is changed to form a substantially circular shape of the cable. A clamp that forms a holding portion and holds the cable is provided between the clamp and a cable holding position on the side opposite to the cable extending direction along the longitudinal direction of the cable and a cable holding release position on the cable extending direction side. Driving means for reciprocating movement, first moving means for relatively moving the clamps in a direction of approaching each other at the cable holding position, and second movement for moving the clamps in a direction of moving away from each other at the cable holding release position. And a cable drawing machine. 2. The cable drawing machine according to claim 1, wherein a crank mechanism is provided as the first and second moving means, and the crank mechanism relatively moves the clamps in the contact and separation directions. A cable drawing machine characterized by. 3. A cable drawing machine that draws an intermediate portion of a cable and extends the cable, wherein the recesses of the cable are arranged so as to face each other, and the interval is changed so that the cable is clamped into a substantially circular shape having an arbitrary size. Sets of clamps that form a cable and clamp the cable, and a cable clamping position on the opposite side of the cable extending direction along the longitudinal direction of the cable and a cable clamping direction on the cable extending direction side of each of the two clamps. Drive means for reciprocating between the release position and first moving means provided corresponding to each of the two sets of clamps for relatively moving the clamps toward each other at the cable clamping position; Second moving means provided corresponding to each of the pair of clamps and moving in the direction in which the clamps are separated from each other at the cable pinching release position, and the two sets of clamps are connected to each other. The cable clamp position and the cable clamp release position are adjacently arranged along the cable extension direction so that the cable clamp position and the cable clamp release position do not overlap, and one of the clamps moves from the cable clamp position to the cable clamp release position. The cable drawing machine, wherein the other clamp moves from the cable gripping release position to the cable gripping position when moving to.