SU1472982A1 - Installation for cutting and stripping-off insulation from twisted pair of wires - Google Patents

Abstract

The invention relates to electrical engineering and can be used in the processing and manufacture of twisted pairs of wires used in electrical work. The aim of the invention is to increase reliability by eliminating jamming of wires and simplifying the construction. In the proposed installation for cutting and stripping off a twisted pair of wires, comprising a frame on which a wire feed mechanism for a given length is installed, a wire clamping mechanism, an unwinding clamping device and an insulation notching mechanism installed in movable housings 15, 16 knives 17, 18 and means for laying the wires in the cutting plane, each of the latter made in the form of a rotary cam 13, spring-loaded relative to the body, with a curvilinear working surface and a figured groove and pin 23, fixed It is located in one of the movable cases and placed in the shaped groove. 1 hp f-ly, 5 ill.

Description

an ellipse, most of which is equally movable relative to pivotal

by 2 dMS moms, and the small axis is equal because of the width of the groove A (Fig.4.5), A 2 De + dt, where Le is the length of the part of the perimeter of the ellipse, passed by the point at for d§ full wiring) d i zhike - the maximum diameter of the conductor insulation; d is the diameter of the pin.

Coefficient 2 is introduced based on the possibility of twisting the twisted pair wires in one direction or another.

Substituting the values of the axes into the approximate formula of the perimeter of the ellipse, we get

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The cams pin 23 is located in the area of the rhomboid section of the shaped groove. not recorded direction of movement. At the same time, the twisted pair wires without twisting are shifted, the conditions of twisted pair wires laying in cams 13 worsen, as the useful path l of the rotary cam 14 decreases, which can lead to a violation of the twisted pair wires. The forces of the two springs 21 and 26 (P., and P) in the latter case should be the same, but due to the difference in diameters and length (due to the maximum deviations, it is almost difficult to make springs. Therefore, it is necessary to select springs (with the same but minal sizes, with the same

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and. ma "l

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Cams pin 23 is located in the area of the diamond-shaped portion of the shaped groove, i.e. not recorded direction of movement. In this case, the twisted pair wires move without laying, the twisting pair wires laying conditions in cams 13,14 worsen as the useful path l of the swivel cam 14 decreases, which can lead to a violation of the twisted pair wires. The forces of the two springs 21 and 26 (P., and P) should be the same at best, but due to the difference in diameters and length (due to the maximum deviations, it is practically difficult to manufacture such springs. Therefore, it is necessary to select springs (with their identical nominal sizes, with the same

materials, heat treatment conditions, etc.) by compressive force.

Then, the twisted pair wires are centered in the centering elements 15, 16 (Fig. 2, 3) with respect to the cutting elements of the notched knives 17, 18. The movable housings 15, 16 in this case are elements in which all the parts are mounted.

knives 17.18. Other options are possible.

Subsequently, the pair of nocks 17,18 is closed and the insulation is cut by them. A pair of knives 17,18 is displaced to a stop pin 27, which makes it possible to cut the insulation of the wire with a tolerable deviation from the common axis of the channel. After cutting, cutting and cutting off the insulation from the ends of the wires of the pair of nadireh knives 17.18, they return to the initial position, and the rotary cams 53.1 A disperse from the initial position under the action of the elastic force of the springs 21.26,

In the proposed installation, due to the implementation of the laying of the wires described above (FIG. 4), the jamming of the wires and unacceptable deformations in the wires constituting the twisted pair are eliminated, which improves the quality of the wires to be made.

At the same time, the construction of the insulation incision mechanism is greatly simplified, therefore, reliability is increased due to the use of only one pair of cam cams and one pair of springs, and in general, in the proposed installation, the twisted pair wires are laid in the working plane by four cam cams and four springs.

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Thus, the proposed installation has increased reliability and has a simplified design.

Claims (1)

1. An installation for cutting and stripping off a twisted pair of wires, comprising a frame on which a wire feed mechanism is installed for a predetermined length, a mechanism for clamping wires, an unwinding device with clips and a mechanism for notching an insulation with installed in movable housings knives and tools for laying the wires in the cutting plane, characterized in that, in order to increase reliability by eliminating jamming of the wires and simplifying the design, each means for laying the wires in the cutting plane is made into spring-loaded relative to the housing the rotating cam with a curved working surface and a shaped recess and a pin fixed in the housing and disposed in the groove figure. 2, Installation according to claim 1, such that the shaped grooves of the rotary cams each have two sections, the first of which is diamond-shaped, and the second - in the form of a straight channel, the second section of the shaped groove on one of the rotary cams is located on the continuation of the diagonal of the first section by the pain, and on the other - at an angle to it, with the indicated large diagonal and the axis of rotation of each cam located in the same plane. fig1 fiyo.5