JP2008022656A - Tool for handling self-supporting cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for handling a self-supporting cable, wherein a support wire is safely separated from a cable with high efficiency and high quality in self-supporting cable handling. <P>SOLUTION: A joint cutoff section 100 and a cutting portion 200 are provided at the tool 300 for handling the self-supporting cable, to cut a joint 30 which connects the support wire 20 to the cable 10, and cut a remaining projection 31. The cutting portion 200 has a plane-like shape including contact guides 220, 230 and a cutting edge 242, is arranged over jaws 111 and 121, and is arranged along the jaw 111 when not used. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a self-supporting cable processing tool, and in particular, the support wire part and the cable part are continuously left in the length direction and are left in the cable part after cutting the joint part of the self-supporting cable. The present invention relates to a self-supporting cable processing tool capable of cutting a protruding remaining portion of a joint portion.

  As a typical self-supporting optical cable, there is a so-called dharma self-supporting cable (SS cable). As shown in FIG. 9, the self-supporting cable 40 is formed by joining a cable portion 10 (optical cable portion) and a support wire portion 20 (messenger portion) at a joining portion 30 along the longitudinal direction thereof. . In such a self-supporting cable 40, the cable unit 10 includes an optical unit 12 made of an optical fiber or the like, and the support wire unit 20 includes a steel stranded wire 22 as a hanging wire, which is made of a synthetic resin sheath. It is formed by covering with. The sheath forms a garment 11 in the cable portion 10, and a garment 21 in the support wire portion 20, and also forms a joint portion 30 that connects the cable portion 10 and the support wire portion 20.

  In such a self-supporting cable 40, when the cable part 10 is disconnected from the support line part 20 and connected to the terminal box by pulling it in, the cable part 10 and the support line part 20 are separated.

  As shown in FIG. 10, such a process is performed by dividing into a separation process for cutting the cable part 10 and the support wire part 20 and a grinding process around the cable part. Here, the cutting / separating process is a process of cutting the joint portion 30 (FIGS. 10A and 10B), and the cutting process is performed by removing the protrusion remaining portion 31 of the joint portion 30 remaining in the cable portion 10 after the cutting / separating process is performed. It cuts and cuts so that the outline of cable part 10 may become a smooth circle (Drawing 10 (b) and (c)).

  These two processes can be performed using a knife such as a knife. However, the cutting / separating process generally uses a dedicated tool in view of safety, process reliability, and process speed.

  Such a dedicated tool is shown in FIG. When the handle 1 crossed and connected by the shaft 9 is squeezed, the dedicated tool is provided on each of the two shafts 4 and 5 projecting sideward from the front and rear ends of the upper jaw 2 and the lower jaw 3 facing each other in parallel. The rollers 6 and 7 are rotatably attached to each side of the lower jaw by a predetermined length, and blades 8 extending downward toward the joints are provided at positions located in the middle of the rollers 6 and 7. 7 is located on the same line.

  According to this dedicated tool, as shown in FIG. 8, the joint portion 30 is cut between the support wire portion 20 and the cable portion 10, and the support wire portion and the cable portion can be separated. In this state, the cable portion is cut as necessary, and then the sheath is peeled off to expose the optical cable and a predetermined connection process is performed. A tool similar to the dedicated tool is described in Patent Document 1.

Noto 3016657 gazette

  By the way, the protruding portion 31 (burr) that could not be removed by the excision process often remains in the cable portion 10 from which the joint portion has been excised as described above. When there is such a protruding remaining portion, when the cable portion is taken into the terminal box, waterproofing of the cable inlet of the terminal box may be incomplete. That is, the waterproof sealing material provided at the intake of the terminal box does not adhere to the protruding remaining portion and a gap is generated, and rainwater or the like enters from this gap. For this reason, it is necessary to remove the remnant portion of the cable portion and make the periphery of the cable portion a smooth cylindrical surface.

  Conventionally, in such a cutting process, an operator cuts the protruding remaining portion with a knife or the like so as to adjust the periphery of the cable portion. However, in such a manual operation using a knife or the like, the finished state does not become constant, the work efficiency is not good, the knife may slip on the surface of the cable part, and the operator's hand may be damaged, There is a risk of damaging the part and damaging the internal optical fiber.

  Therefore, the present invention makes it possible to cut and remove the projecting remaining portion of the cable portion with good and high efficiency. As a result, the self-supporting cable processing is safe, high-quality and high-efficiency separation processing between the support wire portion and the cable portion. It aims at providing the self-supporting type cable processing tool which can be performed by this.

  In the present invention, the means for solving the above-mentioned problems is left in the cable portion after cutting the joint portion of the self-supporting cable in which the support wire portion and the cable portion are connected by the joint portion in the length direction. A self-supporting cable processing tool for cutting a protruding remaining portion of a joint, wherein the cable joint is positioned so as to be movable in the longitudinal direction, and the joint is moved along with the movement of the cable while the joint is positioned. A cutting blade that is attached to the joining portion cutting portion, moves the cable portion in the longitudinal direction, and cuts a protruding remaining portion of the joining portion remaining in the cable portion. And a cutting part having a self-supporting cable processing tool.

  According to the present invention, the joint part of the self-supporting cable can be cut at the joint part cutting part of the self-supporting cable processing tool, and the cable part can be moved in the longitudinal direction at the cutting part to The remaining protrusion can be easily cut with a cutting blade. For this reason, the self-supporting cable processing can be performed in a safe, high-quality, and highly efficient manner.

  Embodiments of the self-supporting cable processing tool according to the present invention will be described below.

  FIG. 1 is a plan view of the self-supporting cable processing tool according to the embodiment when the cutting part is used, and FIG. 2 is a perspective view of the self-supporting cable processing tool shown in FIG.

  A self-supporting cable processing tool 300 according to this example includes a joint cutting unit 100 and a cutting unit 200. The joint cutting unit 100 is configured by joining a heel member 110 including a jaw portion 111 and a handle portion 112 and a heel member 120 including a jaw portion 121 and a handle portion 122 so as to intersect with each other rotatably on a shaft 101. Yes.

  In this example, the heel member 110 is provided with a bent portion between the jaw portion 111 and the handle portion 122 so that the jaw portion 111 and the handle portion 112 are not arranged on the same straight line. Similarly, the heel member 120 is also bent so that the jaw portion 121 and the handle portion 122 are not arranged on the same straight line. This is because when the cable portion 10 of the self-supporting cable 40 is pressed against the cutting portion 200 described later, the cable portion 10 is stably held by the cable support member 250 described later.

  A roller 113 and a roller 114 are rotatably supported on the jaw 111, and a roller 123 and a roller 124 are rotatably supported on the jaw 121. In this example, when the handle portions 112 and 122 are gripped and the jaw portions 111 and 121 are brought close to each other, the joint portion 30 of the self-supporting cable 40 is sandwiched between the rollers 113 and 114 and the rollers 123 and 124. Thus, the self-supporting cable 40 can be moved in the longitudinal direction in a state where the joint portion 30 is sandwiched between the rollers 113 and 114 and the rollers 123 and 124.

  The jaw 111 is provided with a cutting blade 102 between the rollers 113 and 114, and the cutting edge of the cutting blade 102 is joined with the joints 30 between the rollers 113 and 114 and the rollers 123 and 124. The joint portion 30 is cut in the longitudinal direction so that the cable portion 10 and the support wire portion 20 can be separated by moving the self-supporting cable 40 in the longitudinal direction.

  In a state where the self-supporting cable 40 is separated by the joint cutting part 100, the protruding remaining part 31 remains in the cable part 10 as shown in FIG.

  Next, the cutting part 200 which cuts this protrusion remaining part 31 is demonstrated. In this example, the cutting part 200 is attached to the jaw part 111 of the joint part cutting part 100.

  3 is a cross-sectional view corresponding to the line AA in FIG. 1 of the self-supporting cable processing tool shown in FIG. In this example, the cutting part 200 is formed by attaching two contact guide parts 220 and 230 and a bowl-shaped fixed blade part 240 to a metal box member 210 which is a base part. The box member 210 includes a rectangular bottom plate 211, two side plates 212 and 213 erected on the short side of the bottom plate 211, an erected plate 215 erected on the long side of the bottom plate 211, And a support plate 216 attached to the side plates 212 and 213 with a gap therebetween.

  In this example, the fixed blade portion 240 and the contact guide portions 220 and 230 are arranged on the support plate 216. The contact guide 220 is arranged by urging a contact piece 221 having a contact surface 222 against the support plate 216 by a coil spring 223. Similarly, the contact guide 230 is arranged by urging a contact piece 231 having a contact surface 232 against the support plate 216 by a coil spring 233. In this example, the contact surface 222 and the contact surface 232 are formed so as to expand toward each other in the width direction in FIG. 3 on both sides of the fixed blade portion 240. Thereby, the circular cable portion 10 can be reliably held.

  FIG. 4 is a perspective view showing a cutting portion of the self-supporting cable processing tool shown in FIG. In this example, the fixed blade portion 240 is a bowl-shaped member in which a cutting blade 242 is attached to a blade mounting member 241 having a U-shaped cross section. In this example, the cutting blade 242 is a single blade whose inclined blade surface faces downward, and the cutting edge 243 is arranged so as to face the handle portion 112. Further, the extending direction of the blade edge 243 is formed so as to be inclined with respect to the extending direction of the cable portion 10 in order to improve the biting of the blade edge 243 into the remaining protrusion 31.

  The blade attachment member 241 is attached to the support plate 216 with an adjustment screw 244 so that the attachment position is variable. Thereby, the cutting amount of the protrusion remaining part 31 can be adjusted. The adjusting screw 244 is rotatably supported by the blade mounting member 241 with a receiving portion 245.

  Further, in this example, the cutting part 200 is formed in the longitudinal direction along the direction orthogonal to the moving direction of the cable part 10 at the time of cutting, and the dimension w in the direction orthogonal to the moving direction is set to two jaw parts. The dimension d is sufficient to straddle 111 and 121, and the dimension d in the direction along the moving direction is smaller than the width dimension D of the jaw 111 (see FIG. 2). Further, in this example, one end portion of the box member 210 of the cutting portion 200 is attached to the jaw portion 111 so as to be rotatable by an attachment screw 217.

  Thereby, when the cutting part 200 is not used, that is, when the self-supporting cable processing tool 300 is not used and when the joint cutting part 100 is used, the longitudinal direction of the cutting part 200 is made to coincide with the extending direction of the jaw part 111. It can be placed into a storage state (see FIGS. 5 and 6).

  And when cutting the protrusion remaining part 31 with the cutting part 200, the latching member 218 is standingly arranged by the other jaw part 121 so that the cutting part 200 can be arrange | positioned across two jaw parts. Further, a locking groove 219 (see FIGS. 1 and 2) formed in the box member 210 is provided, and the box member 210 is locked to the locking member 218 when the cable portion 10 is moved in the cutting direction of the protruding remaining portion 31. It is fixed.

  Further, since the contact guide portion 220 and the contact guide portion 230 are supported by the coil spring 223 and the coil spring 233, they can move downward in the figure while resisting the pressing force of the cable portion 10.

  When the abutment guide portions 220 and 230 are pushed by the cable portion 10 and moved downward, the protruding remaining portion 31 of the cable portion 10 comes into contact with the cutting blade 242, and the cutting edge 243 bites into the protruding remaining portion 31. Is ready for cutting.

  Further, in this example, the handle portion 112 contacts the extension portion of the cable portion 10 disposed in the cutting portion 200 in order to perform a cutting process when the cutting portion 200 is used, and the cable portion 10 is brought into contact with the contact guide portion 220. , 230 and a cable support member 250 are provided. In this example, the cable support member 250 is formed by forming a concave portion 252 for guiding the cable portion 10 in a flat support portion main body 251.

  The cable support member 250 is pivotally supported at one end portion of the support portion main body 251 on one handle portion 122 by a mounting screw 253 so that the cable support member 250 is retracted along the shaft support portion 122 (see FIGS. 5 and 6). ) And a use position (see FIGS. 1 and 2) that straddles the two handle portions 112 and 122. That is, the locking member 254 is erected and formed on the cable support member 250 so that the cable support member 250 can be placed across the two handle portions 112 and 122 when the cutting portion 200 is used. The locking groove 255 can be locked from the retracted state.

  Here, in the present example, as described above, the collar members 110 and 120 are bent so that the handle portions 112 and 122 and the jaw portions 111 and 121 are not arranged on the same line. When the cable portion 10 is disposed, the contact guide portions 220 and 230 of the cutting portion 200 and the concave portion 252 of the cable support member 250 are positioned on a substantially straight line, and the cable portion 10 can be held in a straight line to be guided. . For this reason, it is necessary to appropriately determine the degree of bending of the flange members 110 and 120 according to the thickness dimensions of the cutting part 200 and the cable support member 250.

  Next, a method of using the self-supporting cable processing tool 300 according to this example will be described.

  First, in a state where the self-supporting cable processing tool 300 is not used, if the cable support member 250 is hung on both handle portions 112 and 122, the both-side members 110 and 120 of the self-supporting cable processing tool 300 are used. Is kept closed, and the self-supporting cable processing tool 300 can be prevented from being opened unnecessarily.

  Then, the joint part 30 of the self-supporting cable 40 is cut using the joint part cutting part 100 of the self-supporting cable processing tool 300 to separate the cable part 10 and the support wire part 20. At this time, the cutting unit 200 and the cable support member 250 are in the retracted state. That is, as shown in FIGS. 5 and 6, the cutting portion 200 is disposed within the contour of the jaw portion 111, and the cable support member 250 is disposed within the contour of the handle portion 122. In this state, the self-supporting cable 40 is moved while the joining portion 30 is sandwiched between the rollers 113 and 114 and the rollers 123 and 124 and the joining portion 30 is cut by the cutting blade 102. Thereby, the junction part 30 of a predetermined location is cut | disconnected (FIG.10 (b)).

  Next, the protruding remaining portion 31 remaining in the cable portion 10 is cut. At this time, as shown in FIG.1 and FIG.2, the cutting part 200 and the cable support member 250 are made into a use condition. That is, the cutting part 200 is rotated around the attachment screw 217 and is passed over the jaw part 111 and the jaw part 121, and the engaging groove 219 is engaged with the engaging member 218. Further, the cable support member 250 is rotated around the attachment screw 253 and is passed over the handle portion 112 and the handle portion 122, and the locking groove 255 is engaged with the locking member 254.

  In this state, the cable portion 10 is brought into contact with the concave portion 252 of the cable support member 250, and the protruding remaining portion 31 of the cable portion 10 is pressed against the cutting portion 200 so as to contact the cutting blade 242 of the fixed blade portion 240. At this time, since the cable portion 10 is guided by the recess 252, the cable portion 10 can be brought into contact with the cutting portion 200 without being bent and without being inclined.

  When the cable portion 10 is pressed against the contact guide portions 220 and 230 of the cutting portion 200, the cable portion 10 approaches the fixed blade portion 240 while being stably held by the two inclined contact guide portions 220 and 230. Go. If the cable part 10 is pulled to the cutting part 200 side while pressing the cable part 10 against the fixed blade part 240 as it is, the cutting edge 243 of the cutting blade 242 of the fixed blade part 240 bites into the protruding remaining part 31, and cutting starts. If the cable portion 10 is continuously pulled in this state, the protruding remaining portion 31 is cut by the cutting blade 242. When the pressing of the cable portion 10 on the contact guide portions 220 and 230 is loosened, the cable portion 10 is pushed out by the contact guide portions 220 and 230, and the cutting blade 242 is detached from the protruding remaining portion 31.

  Such grinding is performed as needed until the remaining protrusion 31 disappears and the surface of the cable portion 10 becomes smooth, and the cutting is finished.

  In the above example, the cutting blade has a straight edge, but can be a curved blade having substantially the same shape as the arc formed by the outline of the cable portion.

  In the above example, the contact guide portion is formed to be movable. However, the contact guide portion may be fixed and the member including the cutting blade may be configured to be movable.

It is a top view at the time of use of the cutting part of the self-supporting type cable processing tool according to the embodiment. FIG. 2 is a perspective view of the self-supporting cable processing tool shown in FIG. 1. It is sectional drawing equivalent to the AA line in FIG. 1 of the self-supporting type cable processing tool shown in FIG. It is a perspective view which shows the cutting part of the self-supporting type cable processing tool shown in FIG. It is a top view at the time of storing the cutting part of the self-supporting type cable processing tool shown in FIG. It is a front view at the time of storing at the time of cutting of the self-supporting type cable processing tool shown in FIG. It is a top view which shows the junction part cutting tool of the conventional self-supporting type | mold cable. It is sectional drawing equivalent to the BB line which shows the use condition of the junction part cutting tool of the self-supporting type cable shown in FIG. It is a perspective view which shows a self-supporting type cable. It is a figure which shows the processing state of a self-supporting type | mold cable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cable part 20 Support line part 30 Junction part 31 Projection remaining part 40 Self-supporting type cable 100 Joint part cutting part 111 Jaw part 112 Handle part 113,114 Roller 121 Jaw part 122 Handle part 123,124 Roller 200 Cutting part 210 Box member ( Base part)
220, 230 Contact guide portion 221 Contact piece 222 Contact surface 223 Coil spring (biasing member)
230 Contact guide portion 231 Contact piece 232 Contact surface 233 Coil spring (biasing member)
240 Fixed blade portion 241 Blade mounting member 242 Cutting blade 250 Cable support member 251 Support portion main body 300 Self-supporting cable processing tool

Claims (11)

A self-supporting cable processing tool that cuts the protruding remaining part of the joint part left in the cable part after cutting the joint part of the self-supporting cable in which the support line part and the cable part are connected at the joint part in the length direction. There,
Means for positioning the joint portion of the cable so as to be movable in the longitudinal direction, and a joint portion cutting portion having means for cutting the joint portion with movement of the cable in a state in which the joint portion is positioned;
A contact part that is attached to the joint part cutting part and positions the cable part so as to be movable in the longitudinal direction, and a cutting part that has a cutting blade that cuts the protruding remaining part of the joint part remaining in the cable part,
A self-supporting cable processing tool. The joint cutting part extends from two handle parts that are rotatably joined and can be opened and closed by a shaft, and is arranged on two jaw parts that can be opened and closed and arranged substantially parallel to each other at a predetermined interval. At least one pair of roller members sandwiching the joint portion of the support cable is rotatably arranged, and at least one of the two jaw portions is provided with a cutting blade for cutting the joint portion sandwiched between the roller members And
The self-supporting cable processing tool according to claim 1, wherein the cutting portion is attached to at least one of the two jaw portions.   The self-supporting cable processing tool according to claim 1 or 2, wherein the cutting portion is configured such that the contact guide portion and the cutting blade are disposed on a base portion.   The abutment guide part and the cutting blade are disposed so as to be relatively movable from a separated position where the cutting edge of the cutting blade does not contact the protruding remaining portion to a cutting position where the cutting edge of the cutting blade cuts into the protruding remaining portion. The self-supporting device according to claim 3, wherein a biasing member that biases the contact member and the cutting blade so as to be in a separated state is disposed between the contact member and the cutting blade. Cable processing tool.   The contact guide portion includes two contact pieces sandwiching the cutting blade, and each contact piece includes an inclined contact surface formed in a direction of expanding from the contact position side toward the separated position side, 5. The self-supporting cable processing tool according to claim 4, further comprising biasing means for biasing the contact piece toward the separated position.   The self-supporting type cable processing tool according to any one of claims 2 to 5, wherein the cutting blade includes a blade height adjusting device for changing a mounting height dimension to the base portion. The cutting part is formed in a longitudinal direction along a direction orthogonal to the moving direction of the cable part, and a dimension in a direction orthogonal to the moving direction is set to a dimension straddling the two jaw parts, and is along the moving direction. The dimension in the direction is smaller than the width dimension of the jaw,
One end part of the base part of the cutting part is rotatably attached to the jaw part, and when the cutting part is not used, the longitudinal direction of the cutting part is aligned with the extending direction of the jaw part, and the cutting part is used. 7. A self-supporting cable processing tool according to any one of claims 2 to 6, characterized in that the cutting part is sometimes placed across the two jaws.   The self-supporting cable processing tool according to claim 2, wherein the cutting portion can be fixed to both jaw portions during the use.   9. The cable support member according to claim 2, further comprising a cable support member that contacts the cable portion when the cutting portion is used and supports the cable portion together with the contact guide portion. Self-supporting cable handling tool.   The cable support member is pivotally supported by one handle portion at its end so as to be rotatable, and is disposed at two positions: a position along the pivoted handle portion and a position straddling the two handle portions. A self-supporting cable handling tool according to claim 8. The self-supporting cable processing tool according to any one of claims 1 to 10, wherein the cutting blade of the cutting portion is a curved blade along the contour of the cable portion.

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