DE7233913U - Device for stripping electrical cables - Google Patents

Description

of Pirmn Dornhö'fer GmbH, Mainz

Device for stripping electrical cables

The invention relates to a device for stripping electrical cables.

On large construction sites, for example during production of an airport or a factory, the 2nds of cables often have to be exposed in large numbers so that the Cable ends can be freed from their insulating compound and connected to one another or built into switches can be. The relevant proposals that have become known so far are to be stripped for large quantities required Cables are unsuitable and have major disadvantages. For example, in Auslegeschrift 1 118 293 and in laid-open specification 1 64O 371 simple with a Hand-held cable knife described, but their use after a short time to severe fatigue in the relevant Hand leads, especially when thicker cables have to be stripped. The device according to patent application 1 006 919 however, has the disadvantage that the cross bores in the screwdriver handle with the help of which the stripping is effected, is only intended and suitable for emergencies, whereby likewise only thinly sheathed cables are possible.

The one described in German Patent 920,918 On the other hand, a device for removing the insulation from insulated wires or strands has the disadvantage that that it works thermally, that is, an electrical or other heat source, which of the natural Advantages of a purely mechanical device and the provision of a heat source makes necessary.

The invention is based on the problem of the above-mentioned disadvantages of those that have become known on the same goblet Avoid suggestions and suggest a device which, in particular, in terms of its performance and also is superior to the previously known devices in terms of its handling

This object is achieved according to the invention in a device for stripping insulation from electrical cables by a A pair of rotatably mounted pairs, fastened on a mounting rail with the grooves, is pressed against one another by spring force Grooved discs, one of which can be driven by hand via its axis of rotation and by one also on the same mounting rail rotatably mounted and manually driven knife holder with an axially extending Hole with a knife protruding into its clearance

The support rail expediently has an axially extending elongated hole with a slidable and clampable hole therein Cable stop block on.

There is an advantage between the rotatably mounted knife holder and a handwheel acting on it Gear drive switched on · The knife holder should be easily exchangeable by means of a tongue and groove guide be stored in a bearing block attached to the mounting rail.

The knife is expediently embedded in a screw bolt that is adjustable in height in the knife holder «

In the following, an embodiment of the invention is explained and described in more detail with reference to the drawing.

Show J

Figure 1 t is a side view in cross section, FIG. 2 t a part of a side view in cross section,

FIG. 3 2 shows a cross-sectional view along the cutting line III-III in Figure 1,

Figure k t is a cross-sectional view along section line IV-IV in Figure 2,

C. Figure 5t is a cross-sectional view along the cutting line

V-V in Figure 1,

Figure 6t shows a cross section along section line VT-VI in Figure 1,

FIG. 7: a cross section along section line V] DI-VII in FIG. 3

and

Figure 8 ι an enlargement of the representation of the Circle VIII encompassed part 4 in Figure 1.

On an arbitrarily designed support rail 1, two are parallel to one another by means of the fastening screws 3 fixed bearing cheeks 2, which at their upper ends by a connecting strap 12 are connected to each other

The grooved washer is between the two bearing cheeks 2, 2 6 with the groove 6 »and the follower groove washer 11 with of the groove 11 * rotatably mounted, both grooved disks') are pressed against each other with their grooves, since the Upper follower grooved disk 11 can be adjusted in height in an elongated hole 10 is mounted and is pressed against the lower grooved washer 6 by two screw tension springs 8, 8. With the reference number 7 is the grooved washer fastening screw Mistake·

A handwheel 5, which can be coupled to a crank handle, engages on the axis of rotation k of the lower grooved disk 6. The handwheel 5 is fastened to the axis of rotation 4 by means of the fastening screw 15

The end of a cable provided with insulating compound is in the direction of arrow 20 through the hole 19 of a plug-in ring 18, which is attached to a bearing cheek cover plate 17. The plug-in ring 18 can be designed to be exchangeable and thus plug-in holes of different diameters.

The cable end inserted through this insertion hole 19 in the direction of arrow 20 is then passed through the two Grooved washers 6 and 11 in the area of grooves 6 * and 11 * detected and as a result of the active rotation of the grooved disc

6 and. the passive rotation of the follower Nutscheibo 11 promoted.

The cable then runs through an axially running bore 28 of a rotatably mounted knife carrier 2k, which is also fastened to the support rail 1. At the end of this bore 28, the cable meets a knife 3 ^ i which protrudes into the clear width of the bore 28 and sheaths the cable in the longitudinal direction

w cuts through. The rotatable knife rotor 24 does not need to describe any rotational movement. This is only necessary and is effected by means of a second handwheel 5 when the cable, which always runs through in the direction of arrow 20, is slit longitudinally and abuts a cable stop plate 36 , which is also attached to the mounting rail 1. The knife holder 2k is then allowed to circle around once by means of the handwheel 5, so that the cable in its sheathing receives an annular cut mn ±. The insulating part separated by means of a longitudinal and ring cut then falls down and the cable can be inserted in the opposite one

^ Pull out again in the direction of arrow 20.

The knife holder 2k carries the actual knife 3 ^, which is connected to the knife carrier 33, which is embedded in a screw bolt 31, which can be locked in the desired height position by means of a screw nut 32. This means that the knife Jk can be given any desired penetration depth.

The knife holder Zk is rotatably mounted in the knife holder bearing block 29 by means not shown in detail. However, it is essential that the knife holder Zk is easily exchangeable. For this purpose there is a tongue and groove connection (see parts 25 and 26) with the bearing block 29 or of the support rail 1 · The spring body Z6 is expediently pressed into the groove 25 by the compression spring ZJ.

The fact that the rotary movement is reduced from the handwheel 5 to the knife holder Zk , which is brought about by the differently sized gearwheels 21 and 23, is also useful. The large gear wheel 21 is fastened to the axis of rotation lk with the fastening screw 22. This in turn is supported by known means not shown in a bearing block 13, which is connected to the connecting plate 12 of the bearing cheeks 2, 2 by means of the two fastening screws 16.

The device described has the advantage that you can work with him for hours without getting tired and that it is very can easily be converted to different cable diameters can. It thus fulfills all the requirements for such Device, especially in terms of practically unlimited performance.

Claims (4)

September 13, 1972 serial no. 72 338 Sohutz claims Device for stripping electrical cables, characterized by a pair of rotatably mounted grooved disks (6, 11) fastened to a support rail (1) with the grooves (6 ', 11') pressed against each other by spring force (8, 8), one of which (6) via its axis of rotation (4 ) can be driven by hand, and by a knife holder (24) which is also rotatably mounted on the same mounting rail (i) and which can be driven by hand and has an axially extending bore (28) into the clearance of which a knife (34) protrudes. 2. Device according to claim 1, characterized in that the support rail (1) has an axially extending elongated hole (35) with a cable stop block (36-kO) which can be displaced and clamped in it. 3. Device according to claim 1, , » _R characterized in that between the rotatable "** stored knife holder (24) and one on it kenden handwheel (5) a gear drive (21,23) is switched on. 4. Apparatus according to claim 1, characterized in that the knife holder (24) is easily exchangeable by means of a tongue and groove guide (25, 26) rotatable in a mounted on the mounting rail (1) Bearing block (29) is supported 5 device according to claim 4, characterized in that the knife (34) is in a screw bolt which is adjustable in height in the knife holder (24) (31) is embedded.