JPS6347232B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus which can be used not only for cable core line work but also for crimp terminal attachment work.

The applicant of the present application made a cut in a cable in which a plurality of covered electric wires were covered with a sheath, leaving the length of the covered electric wire exposed, and held the cable on the front side, and also clamped the vicinity of the cut in the rear side. By pulling the front sheath in the relative direction, the front sheath is separated from the cut, and at the same time the sheathing of each insulated wire in front of the cut is stretched all at once, and all that is left is to remove the separated sheath and separate the ends of each insulated wire. We have already developed a device for core wire alignment and have applied for a patent (Patent Application No. 105634-1987).
However, the device of this earlier application was dedicated to core wire work.

In addition, the applicant has compressed and retracted the sheathing at the end of the insulated wire with respect to the core wire to extrude the core wire from the sheathed end, and after attaching a crimp terminal to the protruding part of the core wire, from now on, the core wire should be reversed to the sheath. We have developed a device for attaching crimp terminals that allows the sheath to be placed over the protruding part of the core wire to which the crimp terminal is attached by retreating and restoring the sheath, but this device is also designed specifically for crimp terminal attachment work. It was hot. However, since both the core wire drawing device and the crimp terminal mounting device require a mechanism for moving the sheath and the core wire in relative directions, it is easy to share the structural members, and moreover, it is possible to easily share the structural members. Since crimp terminal attachment is often carried out at the same time, it would be even more convenient to use if the cable core drawing device could also be used for the crimp terminal attachment work.

This invention has been made in view of the above points, and embodiments of the invention will be described below with reference to the drawings.

Reference numeral 1 denotes a pair of outer casings each having a U-shaped cross section. Both ends of one side edge of each outer casing 1 are pivotally connected via hinges 2 so as to be freely openable and closable, and cable insertion holes 3 are provided in both end walls of each outer casing 1. will be established.

Reference numeral 4 denotes a pair of fixed dies for holding cables which are connected via a hinge 5 so as to be openable and closable, and have openings 4b in both end walls.
A holding member 4c having elasticity and having a groove adapted to accommodate the cable A is fitted into a frame 4a having a U-shaped cross section and having an opening. They are fitted facing one end (the left end in this case) of the inside. Reference numeral 6 denotes a pair of movable cable holding dies connected to the opening/closing member via a hinge 7, in which a holding member 6c is housed within a frame 6a having openings 6b in both end walls.
Each movable die 6 is fitted adjacent to the fixed die 4 so as to be slidable in the longitudinal direction inside the outer casing 1. Note that, although not particularly limited, the holding member 4c
By coating the surface of the groove portion provided in the holding member 4c or 6c with a high-friction material such as diamond sand, the cable can be more securely fixed by the holding member 4c or 6c.

8 and 9 are a pair of support rods for opening and closing the outer casing 1;
One end of one support rod 8 is fixed to the center of the front flange surface of the lower outer casing 1, and one end of the other support rod 9 is swung to the front corner of the web surface of the upper outer casing 1. Further, the lower end of a bolt 10 with a nut 10a provided at the upper end is pivotally mounted near the outer casing 1 of the lower support rod 8 so as to swing slightly back and forth, and the upper outer casing 1 An engaging portion 11 that engages with the nut 10a is provided protrudingly on the flange surface of both support rods 8,
9 adjacent to each other and closing the upper and lower outer casings 1, the nut 10a engages with the engaging portion 11 and is automatically locked, and by swinging the upper support rod 9 upward. The lower end edge of the support rod 9 pushes the nut 10a forward to release the engagement with the engagement portion 11.

Reference numeral 12 denotes an operating rod for slidingly operating the movable die 6, the tip of which is bent in a dogleg shape, and is bored in the web surface of the lower outer casing 1 in its longitudinal direction. The tip of the operating rod 12 is pivotally connected to the movable die 6 via a pivot 14 that passes through the insertion hole 13, and the bent portion of the operating rod 12 is pivotally connected to the lower support rod 8. The fixed die 4 is moved toward or away from the fixed die 4 by opening and closing the operating rod 12. Although the operating rod 12 is located on the right side of the support rod 8 in FIGS. 1 and 3, if the operating rod 12 is turned over and pivoted, it can be placed on the left side and the same operation can be performed.

The configuration up to this point is common to both crimp terminal attachment and core wire drawing operations, but the following is for core wire drawing operations. That is, in FIGS. 2 and 3, reference numeral 15 denotes a pair of cutters for making cuts around the sheath C of the cable A, and the cutters 15 are used to cut the fixed die 4 in the frame 6a of the movable die 6.
removably arranged oppositely at the near end,
Also, a pair of pressing pieces 16 forming a circular hole surface with a diameter slightly smaller than the diameter of the circular blade of the cutter 15 are removably attached to the end of the movable die 6 in the frame 4a of the fixed die 4, and are arranged oppositely. do. In addition, cutter 1
5 may be provided on the fixed die 4 side, and the pressing piece 16 may be provided on the movable die 6 side.

Reference numeral 17 denotes a cable holding piece having a U-shaped opening 17a with an open upper end, and is used to securely hold cable A in the center of fixed die 4 and movable die 6. The width of this opening 17a is equal to the width of cable A. The holding piece 17 is approximately equal to the outer diameter, and is detachably interposed between the fixed die 4 and the movable die 6 adjacent to the fixed die 4 . 18 urges the movable die 6 toward the fixed die 4 side and extends the sliding range of the movable die 6 from the fixed die 4.
This spring device 18 is limited to about 15 mm to prevent the cable A from bending when the movable die 6 is returned to the fixed die 4 side.
One end of a spring 18a is fixed to one end of each pipe 18b arranged in parallel, and the other end of the spring 18a protrudes outward from the other end of the pipe 18b. It is removably interposed between the movable die 6 and the movable die 6.

Next, the manner of use of the embodiment of the above configuration will be explained.

First, when attaching a crimp terminal to the end of a covered wire, the cutter 15, the pressing piece 16, the holding piece 1
7 and the spring device 18 are removed (see Fig. 1), cut _one end of the insulated wire A to align the insulated wire C end with the core wire B end, and support the operating rod 12, as shown in Fig. 4. With the rod 8 pulled toward the closed position and the movable die 6 separated from the fixed die 4, the end of the covered electric wire _A1 is made to protrude to the left from the left end of the lower outer casing 1, and the fixed die 4 and movable die 6 are connected.
Place the upper and lower support rods 8 and 9 together to close the opposing outer casing 1, and then tighten the nut 10a and the engaging portion 11.
The wire is locked by engagement, and the covered wire _A1 is pressed and clamped between the fixed die 4 and the movable die 6 facing each other.

Then, the operating rod 12 is pushed open with respect to the support rod 8, the movable die 6 approaches the fixed die 4, the coating C is compressed, and the core wire B protrudes from the end of the coating C. Here, the crimp terminal D is attached to the protrusion of the core wire B using another crimp tool (not shown). Then, the operating rod 12 is pulled toward the support rod 8 to separate the movable die 6 from the fixed die 4, and the core wire B protruding from the end of the sheath C to which the crimp terminal D is attached is pulled back into the sheath C. By restoring it, cover the attachment part of the crimp terminal D. In this way, the upper support rod 9 is swung upward to disengage the engagement portion 11 and the nut 10a, and the upper and lower outer casings 1 are opened, and the covered electric wire A ₁
Once removed, installation of the crimp terminal is completed.

Next, when core wires are drawn out for cable A in which a plurality of covered wires _A1 are covered with sheath C, the cutter 15, pressing piece 16, holding piece 17 and spring device 18 shown in FIG. When installed, as shown in Figure 3, with the outer casing 1 open, connect the cable A to its covered wire.
Protrude from the cutter 15 toward the fixed die 4 side by the exposed length of A ₁ and place it on the fixed die 4 and movable die 6, and close the outer casing 1 by aligning the upper and lower support rods 8 and 9 and tighten the nut 10a. It is locked by the engagement of the engaging portion 11, and the cable A is pressed and clamped between the fixed die 4 and the movable die 6 facing each other.

In this state, a cut is made in the cable A around the sheath C by the cutter 15, and the cable A on the front side of the cut is held by the fixed die 4 and the pressing piece 16, and the cable A on the rear side The cable A is held by the movable die 6 and the cutter 15.

When the operating rod 12 is pulled toward the support rod 8 and the movable die 6 is separated from the fixed die 4 against the spring device 18, the sheath C is cut away from the cut and at the same time the sheath of each covered wire _A1 is removed. _C1 is
It is pulled together with the cut sheath C over the core wire B ₁ and extended toward the front part of the cut where the stretching resistance on the core wire B ₁ is small, that is, toward the fixed die 4 side. Then, when you release your hand from the operating rod 12, the movable die 6 is returned to the fixed die 4 side by the spring device 18, so the upper support rod 9 is swung upward and engaged with the nut 10a and the engaging portion 11. , and remove the outer casing 1.
Open and take out cable A. Then, approximately the core wire B ₁ end position of the front end of the cable 4 is cut using another cutter (not shown), and the separated front sheath C is longitudinally incised and removed, and the covered wire A ₁ is removed. When stripped, the covering C ₁ of each covered wire A ₁ that has been stretched as described above restores and contracts, so that the ends of the core wires B ₁ protrude all at once from the ends of each covered wire A ₁ . In this way, the core line work for cable A is completed.

As explained above, according to the apparatus of the present invention, the core wire is removed from the end of the covered wire while stripping the covered wire from the end of the cable made of a plurality of covered wires covered with a sheath and taking out the core wire from the end of each covered wire. After extruding and attaching the crimp terminal, it can be used to cover the crimp terminal attachment part with a cover by simply removing a very small number of parts, which expands the scope of work and increases versatility. Since both of the above operations are often performed in parallel, it is more convenient to use, and most of the components are common to both operations, simplifying the structure, making the entire device compact and cost-effective. In addition to being cheaper, the work can be done in a shorter time than the conventional work of stripping the insulated wire from the cable using tools such as strippers and nippers, and then stripping the core wire from each insulated wire. This has the effect of making it possible to make the length of the core wires the same for each insulated wire without worrying about damaging the wires.In addition, when attaching a crimp terminal to the insulated wire, the core wire can be attached to the sheath of the insulated wire by operating the operating lever. Since it is relatively pushed out or pulled back, the operation is simple and can be done regardless of whether one is skilled or not, and can be done without causing any damage.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of the device during crimp terminal installation work, FIG. 2 is a perspective view of a component dedicated to cable core drawing work, and FIG. 3 is a cable core drawing process. A plan view of the device during operation, Figures 4a to 4e are cross-sectional views showing the process of attaching crimp terminals to covered wires, Figure 4f is a perspective view of the same, and Figures 5a to f are cable core drawing operations. A sectional view showing the process, and FIG. 5g is a perspective view of the same. 1...Outer casing, 2...Hinge, 3...Cable insertion port, 4
...fixed die, 4a...frame body, 4b...opening, 4c...holding member, 5...hinge, 6...movable die, 6a...frame body,
6b...Opening, 6c...Holding member, 7...Hinge, 8, 9
...Support rod, 10...Bolt, 10a...Nut, 11
...Engagement portion, 12...Operation rod, 13...Insertion hole, 14...
Pivot, 15... Cutter, 16... Pressing piece, 17...
Cable holding piece, 18... Spring device, 18a
...Spring, 18b...Pipe, A...Cable,
A ₁ ...covered wire, B...core wire, C...sheath (coating),
D...Crimp terminal.

Claims (1)

[Scope of Claims] 1. A pair of outer casings having a U-shaped cross section, which are pivotally connected at one side edge so as to be freely openable and closable, and have cable insertion ports at both ends; a pair of fixed dies for cable holding; a pair of movable dies for cable holding adjacent to and facing the fixed dies and slidably inserted in the longitudinal direction within each outer casing; and the movable dies. an operating rod for moving the dies toward or away from the fixed dies, and a pair of support rods extending from each of the outer casings for opening or closing the outer casings, each of the fixed dies and the movable dies At mutually adjacent ends of the dies, a pair of cable clamping press pieces are provided on one die side, and a pair of sheath cutting cutters are placed opposite each other on the other die side, so that they can be attached and detached. Characteristic cable core drawing device.