JPS63117610A - Cable covering stripper - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a cable sheath stripping device.

(Prior Art) A cable whose core body is covered with an outer sheath is connected by peeling off the outer sheath at one end or a part of the middle to expose the inner core body. When peeling off the outer skin, an operator often makes cuts in the outer skin in the circumferential direction and axial direction using a cutter or the like, and then performs the peeling manually using these cuts.

On the other hand, there are rotary cutters that mechanically hold the cable in place and make a single rotation around the outer circumference of the cable to form cuts in the same direction in the outer sheath, and rotary cutters that move in the axial direction of the cable to make axial cuts in the outer sheath. It is generally considered to be possible to automatically form cuts in the outer skin by combining a forming shaft-feed cutter.

(Problems to be Solved by the Invention) The conventional method of manually peeling off the outer skin has the problem that the peeling operation takes time and effort. In addition, with the method of mechanically forming cuts in the outer skin with a cutter, it is necessary to peel off the core after forming the cuts in the circumferential and axial directions, making it difficult to automate or improve the efficiency of the peeling process. When making cuts with a cutter, it is easy to damage the inner shield, such as thin film or paper, that wraps the wire inside the outer sheath. In addition, since the cutter is moved in the axial direction of the cable, the entire peeling device becomes large due to the guide and traveling device used to move it, and if the outer skin to be peeled is long, the cut must be made in multiple steps. Unfortunately, it is necessary to perform peeling work when installing, which makes the first work a hassle.

On the other hand, it is conceivable to hold the cable in a fixed position and move the cutter spirally around the outer circumference of the cable, thereby directly peeling off the outer skin continuously with the cutter without making any cuts. The problem of the cutter damaging the core and the problems mentioned above when the skin to be peeled off is long still remain.

(Means for Solving the Problems) The present invention provides a cable sheath stripping device that solves the above-mentioned problems. A rotary body that rotates around the circumference concentrically with the cable, and a cutter that is installed on the rotary body and cuts into the outer sheath of the cable in the axial direction of the cable while maintaining a clearance between it and the core body. I will provide a.

(Function) In the above cable sheath stripping device, the cutter provided on the 5-rotator cuts into the sheath while maintaining a clearance between it and the core of the cable. While lifting it from the core, it enters between this outer skin and the core, and this raised outer skin is cut off. Then, when the cutter rotates in a fixed position and the cable moves in its axial direction, the outer sheath is peeled off for a length corresponding to the distance of movement. in this case.

If the distance that the cable moves during one revolution of the cutter is set to be equal to or shorter than the cutting width of the cutter, all of the outer skin of the cable that passes through the cutter is peeled off. Furthermore, if the distance traveled by the cable is longer than the cutting width of the cutter, the outer sheath of the cable will be peeled off in a spiral manner, and therefore a spiral outer sheath will remain.

(Effects of the Invention) Therefore, according to the present invention, only the outer sheath can be reliably peeled off without damaging the core of the cable, and since the cable is moved by rotating the cutter in a fixed position, it can be used over a long range. Even when the outer skin is peeled over a long distance, the peeling device does not become large-sized, that is, there is no restriction on the length of the outer skin to be peeled.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In a cable 1, an example of which is shown in FIG. 1, 2 is a core body in which a plurality of core wires 3 are wrapped in an internal shield 4, and 5 is an outer sheath that covers the core body 2. The overall structure of this cable 1 sheath stripping device is shown in FIG. In this skin stripping device, 6 is a guide means for guiding the cable 1 fed out from a drum (not shown) onto a cable supply line;
8 is a length measuring means for measuring the feeding length of the cable 1 after passing through the guide means 6; 8 is a supply means for moving the cable 1 in the axial direction on the cable supply line; 9 is a length measuring means for measuring the feeding length of the cable 1 after passing through the guide means 6; Peeling means for peeling off the outer skin 5, 1
0 is a cutting means for cutting the cable 1 to an appropriate length; 11
is a winding drum that winds up the cable 1.

The guide means 6 is arranged on both sides (second side) of the cable supply line.
Only one side is shown in the figure. ) vertical roller 13 with its axis vertically arranged, and upper and lower horizontal rollers 14a arranged meticulously horizontally on the downstream side of the vertical roller 13.
, 14b.

The pair of vertical rollers 13 are provided so that the distance between them can be adjusted by a handle 15, and the upper horizontal roller 14a is provided so as to be movable up and down by a handle 16 with respect to the lower horizontal roller 14b which is in a fixed position.

The length measuring means 7 includes a flat belt 19 suspended around a pair of pulleys 17 and 18, upper and lower rollers 20a and 20b that press the cable 1 against the upper surface of the flat belt 19 on the carrier side of the flat belt 19, and A length measuring roller 21 is provided on the return side of the belt 19 to measure the traveling length of the flat belt 19. The upper roller 20a is supported by the lower end of a rod 24 fitted into the guide cylinder 23 of the elevating plate 22, and is moved to the lower roller 20b at a fixed position by a spring (not shown) provided between the guide cylinder 23 and the rod 24. The direction is biased. The length measuring roller 21 is supported by a length measuring machine 25, and the upwardly biased receiver holds the flat belt 19 together with the roller 26 and rotates as the flat belt 19 runs. The traveling length of the flat belt 19, that is, the feeding length of the cable 1, is measured from the rotational speed of the flat belt 19.

The supply means 8 is connected to the gear 2 by the operation of the drive motor 28.
A pair of lower drive rollers 31, 31 that are rotationally driven synchronously through 9.30, and upper presser rollers 33, 33 that move up and down relative to the lower drive rollers 31, 31 by driving of lifting motors 32, 32. Equipped with. In this case, the cable 1 is held between the lower drive rollers 31, 31 and the upper presser rollers 33, 33, and is fed in the axial direction by the rotation of the lower drive rollers 31, 31. A sensor 34 for checking the presence or absence of the cable 1 is provided in front of the feeding means 8.

The concrete structure of the peeling means 9 is shown in FIGS. 3 and 4.

First, this peeling means 9 includes an inner cylinder 35 through which the cable 1 passes in the axial direction, an outer cylinder 36 fixed to this inner cylinder 35, and a position in front of this outer cylinder 36 (on the downstream side of the cable supply line) where the cable 1 an annular rotating body 37 that rotates around the outer circumference of the cable, a cable holding device 38 supported by the rotating body 37, a peeling cutter 39 that peels off the outer sheath 5 of the cable 1, and a pair of cutters that cut the peeled outer sheath 5. and a cutting cutter 40.41.

The outer cylinder 36 is connected to a driven pulley 45 which is driven by a motor 42 via a drive pulley 43 and a toothed belt 44.
are connected by a key 46, and rotate together with the inner cylinder 35 when driven by a motor 42. A cam plate 47 is fixed to the front end of the outer cylinder 36, and a brake drum 48 to which the rotating body 37 is coupled is fitted onto the outer cylinder 36 via a bearing 49.

The brake belt 50 suspended around the brake drum 48 is
One end is connected to a bracket 53 fixed to a base 52 via a spring 51, and the other end is a shilling device! 2154
The piston rod 55 is connected to the piston rod 55 of the piston rod 55 . In this case, the brake drum 48 is allowed to rotate within a fixed angle range relative to the cam plate 47 by inserting a pin 57 into a circumferential long hole 56 (see FIG. 4) formed in the cam plate 47. ing.

The cable holding devices 38 are provided in three pieces at equal angular intervals as shown in FIG.
A set of two holding rollers 58, 58 that can come into contact with the peripheral surface of the roller is provided. That is, each cable holding device 38 is supported in a radial elongated hole 59 formed in the rotating body 37 so as to be able to move forward and backward toward the cable 1, and also supported by a holding roller 5.
8 is.

It is supported by a support plate 61 having a radial elongated hole 60, and this support plate 61 is attached to a substrate 62 in the elongated hole 60 so that its position can be adjusted in the radial direction.

The peeling cutter 39 includes a base 63 and a blade 65 having an arcuate cutting edge 64 as shown in FIGS. 5 to 7, and the base 63 is one of the three cable holding devices 38. The cutting edge 64 can cut into the outer skin 5 with a width in the axial direction of the cable.

Each cable holding device 38 supports a cam roller 66, and a cam surface on which the cam roller 66 rolls is formed on the outer periphery of the cam plate 47. The holding device 38 is biased in the centripetal direction by a spring 67 provided between the holding device 38 and the rotating body 37 so as to press the cam roller 66 against the cam surface. That is, this cam surface includes a peak portion 47a and a valley portion 47b formed by going in and out in the radial direction as shown in FIG.
When the cam roller 66 is at the ridge 47a, the holding roller 58 and peeling cutter 39 of each cable holding device 38 are separated from the cable 1, and the cam roller 66 is at the trough 4.7b.
, each holding roller 58 presses the cable 1 to hold the cable 1 concentrically with the rotating body 37, and the peeling cutter 39 inserts its cutting edge 64 between the outer skin 5 of the cable 1 and the core 2. The cut position is such that there is clearance between the two. The movement of the cam roller 66 between the peak portion 47a and the trough portion 47b is allowed by the elongated hole 56 of the cam plate 47 and the brake drum 48. In other words, this is achieved by relative rotation between the rotating body 37 and the cam roller 66 between the cam plate 47 and the brake drum 48.
A spring 68 is tensioned to urge relative rotation between the two members in the direction of riding on the member a.

Further, one of the skin cutting cutters 40 is attached to a bracket 69 fixed to the rotating body 37, and the other cutting cutter 41 is attached to an arm 72 rotatably provided in a long hole 71 with respect to the support plate 70. The two cutting cutters 40 and 41 are configured to pass each other with a cutting clearance provided by the rotation of the rotating body 37. Also, an arm 71 to which the other cutting cutter 41 is attached
is vertically movable in the elongated hole 71 by means of an adjusting screw 73, that is, the clearance for cutting can be adjusted.

Further, the cutting means 10 for cutting the cable 1 includes a second
As shown in the figure, it includes an upper blade 75 that is moved up and down by a cylinder device 74, and a lower blade 76 that moves down and up in conjunction with the up and down movement of the upper blade 75.

These two blades 75 and 76 are configured to be able to pass each other in the insertion hole 77 through which the cable 1 is passed. That is, the upper blade 75 and the lower blade 76 are each provided with a vertical rack 78.
．． 79 is installed, and both racks 78.79
meshes with one pinion 80, so that the upper blade 75 and the lower blade 76 are interlocked.

The winding drum 11 is a cylindrical body with an open top,
A guide 81 that guides the cable 1 into the winding drum 11 in a direction substantially parallel to the tangent to the peripheral wall of the winding drum 11 extends from the cable outlet of the cutting means 10,
The cable 1 is wound up along the peripheral wall while rotating.

Next, the operation of the sheathing device for the cable 1 will be explained.

The cable 1 let out from the drum is horizontally positioned by the vertical rollers 13 of the guide means 6, vertically positioned by the horizontal rollers 14a and 14b, placed on the supply line, and then placed on the supply line by the lower drive roller of the supply means 8. 31,3
1 and the upper presser rollers 33, 33, and is fed on the supply line to the peeling means 9 in the axial direction. The peeling of the outer sheath 5 by the peeling means 9 is performed by a control means (not shown) into which the position and length of peeling of the outer sheath on the cable 1 have been previously input, receiving information regarding the cable feed length from the length measuring means 7. This is done by giving an operating command to the peeling means 9.

Now, in the peeling means 9, a cam plate 47 fixed to the outer cylinder 36 rotates around the outer periphery of the cable 1 by the operation of the motor 42, and a brake drum is connected to the cam plate 47 by a long hole 56 and a pin 57. 48, rotating body 3
7 and the cable holding device 3 supported on this rotating body 37
8. The peeling cutter 39 and the cutting cutter 40 rotate around the outer circumference of the cable 1.

In peeling off the outer skin 5, by applying a brake to the brake drum 48, the rotation of the rotating body 37 fixed to the brake drum 48 is delayed relative to the cam plate 37 using the elongated hole 56 of the cam plate 47. Due to this delay in rotation, each cable holding device 38 supported on the rotating body 37
The cam roller 66 moves from the peak 47a of the cam plate 47 to the valley 4.
7b and moves in the centripetal direction, the holding roller 58 comes into contact with the outer peripheral surface of the cable 1 and holds the cable 1 concentrically with the rotating body 37, while the peeling cutter 37 rotates as shown in FIG. The cable 1 is cut into the outer skin 5 with a clearance S between the cable 1 and the core 2.

After the cam roller 66 descends to the trough 47b of the cam plate 47, the brake applied to the brake drum 48 is released. Even if this release occurs, the cable holding device 38 is biased in the centripetal direction by the spring 67, and the cam plate 47 is rotationally driven, so that the cam roller 66 descends to the valley portion 47b. In other words, the holding roller 58 holds the cable 1, and the state in which the peeling cutter 39 cuts into the outer skin 5 is maintained.

Therefore, from the state shown in FIG. 8, the outer cover 5 of the cable 1
is caused by the rotation of the peeling cutter 39 by the rotating body 37,
The cutting edge 64 of the peeling cutter 39 is lifted up from the core body 2 by the force of being pulled away from the core body 2, and as shown in FIG. 5 is peeled off. The peeled outer skin 5 is sequentially cut each time the cutter 40 supported on the rotating body 37 passes the cutter 41 fixed to the arm 72, and is discharged in the form of chips.

To stop the skin peeling work, apply the brake once to reverse the rotating body 37 and move the cam roller 66 to the cam plate 4.
7, the cable holding device 38 is moved in the direction of centrifugal force, and then the brake is released. Even if this release occurs, the cable holding device 38 is biased in the centripetal direction by the spring 67, and the spring 68 remains between the brake drum 48 and the cam plate 47.
is stretched, so that the cam roller 66 is attached to the mountain portion 4.
The state of riding on 7a is maintained.

After passing through the peeling means 9, the cable 1 is cut into a suitable length by a cutting means 1o which operates in response to a command from a control means, and is wound onto a winding drum 11. This cutting means 1
Cutting by 0 is also performed upon receiving information regarding the cable feed length from the length measuring means 7.

Next, the relationship between the feed speed of the cable 1 and the rotation speed of the peeling cutter 39 will be explained.

When peeling off all of the outer sheath 5 of a predetermined length of the cable 1, first, with the feeding of the cable 1 stopped, the peeling cutter 39 is rotated once to remove the outer sheath 5 that matches the cut width of the peeling cutter 39. Peel off. First, when the cable 1 is fed at a feed rate set so that the distance the cable 1 moves during one rotation of the peeling cutter 39 is approximately equal to or shorter than the cutting width, the cable 1 is moved to the peeling cutter 39.
The entire portion of the outer skin 5 that has passed through is completely stripped off.

Therefore, if the feeding speed of the cable 1 is increased and the distance that the cable 1 moves during one rotation of the peeling cutter 39 is made longer than the above-mentioned cutting width, as shown in FIG.
is peeled off in a spiral while leaving a width corresponding to the increased length. Therefore, for example, cable 1
If a system is adopted in which the core wire 3 is protected by spirally wrapping a large number of strings as an interior shield, the interior shield may fall apart (unravel) due to the outer sheath 5 remaining in the spiral shape. ) can be prevented. When taking out the core wire 3, the remaining outer sheath 5 must be separately peeled off, but since only a portion of the outer sheath 5 remains, the peeling can be easily done manually.

In the above embodiment, the peeling cutter 39 is attached to the cable holding device 38, but it may be attached to the rotating body 37 separately.

Further, in the above embodiment, a cam is used to move the peeling cutter 39 in the radial direction, but other moving means such as a cylinder device may be used.

Further, in the above embodiment, a rotating cable holding device is used to hold the cable 1, but the cable may be held in a fixed position (not rotated).

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a sectional view of a cable, FIG. 2 is a side view showing the overall structure of a cable sheath stripping device, FIG. 3 is a longitudinal sectional view of a sheath stripping means, and FIG. The figure is a front view with some of the means omitted, FIG. 5 is a plan view of the peeling cutter, FIG. 6 is a side view of the same, FIG. 7 is a front view of the same, and
FIG. 9 is a sectional view showing how the peeling cutter cuts into the cable, and FIG. 9 is a sectional view showing how the outer skin of the cable is peeled off. FIG. 10 is a side view showing a state in which the outer skin is peeled off in a spiral manner. 1...Cable, 2...Core, 3...
... Core wire, 4 ... Interior shield, 5 ...
...Sheath, 8... Supply means, 9...
Peeling means, 37...Rotating body, 39...
Peeling cutter. Patent Applicant ShinMaywa Industries Co., Ltd. No. 5 Enko Figure 9 Figure 1o Procedures Amendment Book December 10, 1985 Patent Application No. 263136 of 1988 2.5a Ming Name Cable Peeling Device 3, Relationship with the person making the amendment Patent applicant address 1-5-25 Kozone-cho, Nishinomiya-shi, Hyogo Name (
235) ShinMaywa Industries Co., Ltd. Representative sound Shinji Tamagawa (
4. Agent Postal code 650 Address Asahi Seimei Sannomiya Building 6, 1-3-11 Sannomiya-cho, Chuo-ku, Kobe, Hyogo Prefecture Column 7 for detailed description of the invention in the specification subject to amendment Contents (1) In the 1st line of page 14 of the specification, ``to apply the brake to'' is corrected to ``and the inertia of the rotating body 37''. "Cam plate 37" is corrected to "cam plate 47."that's all

Claims (1)

[Claims] (1) A device for peeling off the outer sheath of a cable whose core body is covered with an outer sheath, comprising a supply means for supplying the cable in the axial direction, and the outer circumference of the cable is placed at a fixed position on the supply line of the cable. A rotating body that rotates concentrically with the cable is provided, and a cutter is provided on this rotating body so that it can cut into the outer sheath of the cable with a width in the cable axial direction and with a clearance between it and the core body. A cable sheath stripping device featuring: