JPS6111933Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for cutting one single wire of a two-core parallel covered electric wire into short lengths.

When connecting a two-core covered electric wire to an electrical device, for example, as an electric wire cord, there are relatively many cases in which the positions of connection terminals are different in the longitudinal direction of the electric wire. In this case, as shown in Fig. 1, after splitting the electric wire 1 and separating it into two single wires 2a and 2b, one of the single wires 2a is cut short by the difference in height, and the tip of each wire is coated. The normal process is to peel off the wires 3a and 3b using a peeling device and twist the exposed core wires 4a and 4b by hand to form an uneven electric wire, and a large proportion of the work is done by hand. Therefore, manufacturing this uneven electric wire requires an extremely large number of man-hours and time compared to the normal case of aligning the wires to the same size and stripping them. For this reason, there has been a need for a device that can automatically trim the ends of a two-core coated wire to a predetermined size difference, strip the tip, and twist the core wire to expose the wire.

In response to this request, it is conceivable to automatically process uneven electric wires through the following process. (1) First, the second
As shown in figure a, wire 1 is connected to two single wires 2a and 2b.
torn apart. (2) As shown in FIG. 2b, make cuts 5a and 5b in the coating according to the required step size difference, and pull out the coatings 3a and 3b slightly from the core wires 4a and 4b. (3) Sandwich the coatings 3a and 3b and rotate them around the core wires 4a and 4b,
While applying twist to a and 4b, the coating 3a is further pulled out as shown in FIG. 3c, and the coating 3b is completely pulled out. (4) Only one single wire 2a is cut to the required dimensions along with the sheathing 3a as shown in FIG. 2d, and the rest of the sheathing 3a is removed by hand when connecting.

Of the above steps, steps (1) and (3) have already been carried out in normal wire stripping, and the present invention is particularly designed to shorten only one single wire of the wire in step (4). This realizes cutting.

An object of the present invention is to provide a device for cutting one single wire of a two-core electric wire by automatically cutting only one single wire of the two-core electric wire by the length of the uneven length in order to automatically process the electric wire with different steps. It is a device for cutting a predetermined one of the separated single wires of a two-core parallel covered electric wire, and includes a mechanism for spreading out both separated single wires and fixing them in parallel, and a mechanism for cutting one of the separated single wires in parallel. The upper blade has a cutting edge consisting of a sloped part to be excluded and a recessed part that grips the other single wire, a lower blade is vertically symmetrical to the upper blade, and the upper blade and the lower blade are slid relative to each other to perform double cutting. The present invention is characterized by comprising an operating mechanism that cuts the single wire gripped by the blade.

The present invention will be explained in detail based on the embodiment shown in FIG. 3 and below.

The mechanism shown in FIGS. 3 and 4 is a device that cuts one single wire of an electric wire by a related operation, and FIG.
Fig. 4 shows a cutting mechanism 30 that cuts short one of the single wires 2a and 2b which are expanded and fixed by the splitting mechanism. .

The splitting mechanism 10 shown in FIGS. 3a and 3b consists of an upper support member 11 and a lower support member 12 fixed to a frame (not shown). A pneumatic cylinder 13 is provided on the upper part of the upper support member 11, and its piston rod An elevating member 15 is fixed to the lower end of 14. The elevating member 15 is guided so as to be slidable up and down in a guide groove of the upper support member 11, and a guide member 16 and a splitting blade 17 are provided at its lower end.
The guide member 16 is provided with an inverted V-shaped surface 18 on the inside, as shown in FIG. The splitting blade 17 cuts the single wires 2a, 2 of the electric wire 1.
The single wires 2a and 2b are pushed into the space between the wires 2a and 2b at a predetermined angle. A presser plate 19 disposed on the elevating member 16 between the guide member 16 and the splitting blade 17 is supported so as to be slidable in the vertical direction, and a pin 20 protrudes from the upper part of the presser plate 19 and a pin 20 protrudes from the elevating member 15. The rest position shown in the figure is maintained by a tension spring 22 provided between the pin 21 and the pin 21. Further, a receiving plate 23 is fixed to the lower support member 12, and a groove 24 is cut into this receiving plate 23 so that the tip of the splitting blade 17 can enter therein. Furthermore, a gap 25 is provided between the lower support member 12 and the receiving plate 23, into which the guide member 16 is inserted.

The cutting mechanism 30 shown in FIGS. 4a and 4b is arranged at the rear of the splitting mechanism 10, and is fixed to a frame (not shown) via a support member 31. Support member 3
A lower blade 32 is attached to the lower end of the blade 1 facing upward, and a presser plate 33 is arranged to be able to slide vertically in contact with the lower blade 32, and a pin 34 and a support member 31 protrude from the lower part of the presser plate 33. A tension spring 36 is provided between the holding plate 33 and the pin 35 protruding from the holding plate 33, and the holding plate 33 is pushed up to the upper position shown in the figure. A pneumatic cylinder 37 is fixed above the support member 31, and a piston rod 38 of the cylinder 37 is movable up and down. An elevating table 39 is fixed to the lower end of the piston rod 38, and the elevating table 39, which is guided by the support member 31 and moves up and down, has an upper blade 40 facing downward.
and a guide member 41 are attached, and the relative position between the upper blade 40 and the guide member 41 can be adjusted using an adjustment bolt 42. Guide member 41
The inverted V-shaped surface 43 formed inside is for aligning and positioning both single wires 2a and 2b spread out by the splitting blade 17 of the splitting mechanism 10 in parallel. The upper blade 41 has a special shape as shown in Fig. 5, and the lower blade 32 has exactly the same shape as the upper blade 41, turned upside down, and is arranged so that their backs rub against each other. ing. That is, the single wire 2b on the right side is removed by the bladeless slope portions 44, 45, and the single wire 2a on the left side is cut by the cutting blades 46, 47. The cutting blades 46 and 47 are formed into V-shaped recesses with right-angled sides, and are designed to cut the single wire 2a from all sides with equal pressure, but other shapes such as semicircular recesses may be used. You can also do that. The slope portions 48, 50 on the left side of the cutting blades 46, 47 are guide surfaces without cutting blades, and prevent the single wire 2a to be cut from escaping.

As shown in Fig. 2c, coating 3 is applied in the previous step.
Single wires 2a and 2b with a and 3b peeled at different levels
A two-core covered electric wire 1 consisting of the following is supplied to the cutting device according to the present invention. That is, the tip of the electric wire 1 is connected to the lower blade 32 and the upper blade 4 of the cutting mechanism 30, as shown in FIG. 4b.
0, and the intermediate portion is placed on the lower support member 12 of the splitting mechanism 10, as shown in FIGS. 3a, b and 4b. However, in FIG. 4b, the splitting mechanism 10 fixes the electric wire 1 and the single wire 2a,
2b is shown in an expanded state. Crotch splitting mechanism 1
0, when air is supplied to the pneumatic cylinder 13 and the piston rod 14 is lowered, the elevating member 15 slides up and down the guide groove, and the guide member 16,
The presser plate 19 and the split blade 17 descend. The guide member 16 enters the gap 25 of the lower support member 12 and positions the electric wire 1 at a predetermined center using its inverted V-shaped surface 18. At the same time, the holding plate 19 comes into contact with the upper surface of the electric wire 1 and presses down the electric wire 1 from above by the acting force of the spring 22. The splitting blade 17 enters the branch part of both the single wires 2a, 2b of the electric wire 1, and separates both the single wires 2a, 2b.
2b will be expanded to a predetermined angle. As shown in FIG. 4b, when the electric wire 1 is fixed and expanded by the splitting mechanism 10, the pneumatic cylinder 37 moves the lifting platform 39 and the upper blade 4 through the piston rod 38.
0, the guide member 41 is lowered, first the guide member 41 is lowered to the left side of the holding plate 33, both the single wires 2a and 2b are put into the inverted V-shaped surface 43, and as the guide member 41 moves downward, both the single wires 2a are lowered. , 2b are arranged almost in parallel.
Next, the upper blade 40 contacts both the single wires 2 a and 2 b and holds both the single wires 2 a and 2 b between it and the presser plate 33 , and the left single wire 2 a is located within the recess of the cutting blade 47 . When the upper blade 40 further descends, the presser plate 33 lowers, and only the single wire 2a is sandwiched between the cutting blade 47 and the cutting blade 46 of the lower blade 32 and cut. During this time, single track 2b on the right
The slope portion 45 of the upper blade 40 and the slope portion 44 of the lower blade 32
and are excluded from amputation. In this way, only one single wire 2a of the two-core electric wire 1 has its end cut short by a predetermined length.

In addition, in this cutting process, since the cutting blades 46 and 47 are made into V-shaped recesses, the rectangular space formed by the cutting blades 46 and 47 is reduced while maintaining a similar shape. Always press 2a from all sides,
The core wire 4a is cut while maintaining its circular cross section. If the cutting edges 46 and 47 are semicircular recesses, the core wire 4a will be cut while being deformed into a flat shape. Although this cutting can be performed on a portion where the sheathing 3a is removed and the core wire 4a is exposed, it is preferable to cut with the sheathing 3a remaining so that the core wire 4a does not escape.

In the embodiment, cuts 5 are formed in the coatings 3a and 3b.
Although a case has been described in which a wire provided with wires a and 5b is cut, the device according to the present invention can of course be used to simply cut a two-core parallel covered wire at different levels. In addition, there is no problem in making appropriate changes to each member, etc. within the scope of the utility model registration claim.

As described above, the device for cutting one single wire of a two-core electric wire according to the present invention uses a specially shaped cutting blade,
By simply supplying separated two-core wires, only one of the single wires can be reliably cut short, and there is an advantage that it can be used as a one-step device for processing uneven wires.

[Brief explanation of the drawing]

Figure 1 is a plan view of the uneven electric wire, Figure 2 a, b,
c and d are process diagrams for creating an uneven electric wire, Figures 3 and below show a device for cutting one single wire of a two-core electric wire according to the present invention, and Figure 3 a is a rear view of the splitting mechanism; 4b is a side view thereof, FIG. 4a is a front view of the cutting mechanism, b is a side view thereof, and FIG. 5 is a front view of the upper blade. Code 1 is a two-core covered wire, 2a and 2b are single wires, 3
a, 3b are coatings, 4a, 4b are core wires, 5a, 5b
10 is a notch, 10 is a splitting mechanism, 11 is an upper support member, 12 is a lower support member, 13 is a pneumatic cylinder, 15 is a lifting member, 16 is a guide member, 17 is a splitting blade, 18 is an inverted V-shaped surface, 19 is a presser plate, 23
3 is a receiving plate, 30 is a cutting mechanism, 31 is a support member, 3
2 is a lower blade, 33 is a holding plate, 37 is a pneumatic cylinder, 39 is a lifting platform, 40 is an upper blade, 41 is a guide member, 43 is an inverted V-shaped surface, 44 and 45 are slope parts, 4
6 and 47 are cutting blades, and 48 and 49 are sloped portions.

Claims (1)

[Claims for Utility Model Registration] 1. A device for cutting a predetermined one of the separated single wires of a two-core parallel covered electric wire, comprising a mechanism for expanding both separated single wires and fixing them in parallel; The upper blade has a cutting edge consisting of a sloped part that excludes the single wire and a recessed part that grips the other single wire, a lower blade that is vertically symmetrical to the upper blade, and the upper and lower blades are slid relative to each other. 1. A device for cutting one single wire of a two-core covered electric wire, comprising an operating mechanism for cutting the single wire gripped by both cutting blades. 2 The concave portions of the upper and lower blades are formed by V consisting of right-angled sides.
A device for cutting one single wire of a two-core electric wire according to claim 1, which has a character-shaped cutting blade.