SU904057A1 - Device for stipping insulation from electic wires - Google Patents

Description

(5) DEVICE TO REMOVE ISOLATION FROM ELECTRICAL

WIRES

one

The invention relates to process equipment for the preparation of electrical wires for installation and can be used in the electrical and radio industries.

A known hand-held tool for stripping insulation from the ends of electrical wires, comprising gripping jaws located on the housing and the movable lever, carriages with cutting elements for notching and tightening the insulation. The drive of the working parts in a known instrument is lever-mounted with handles, one of which is connected to the housing, and the other to the carriage and the LH lever.

However, the rigid fastening of knives in a known tool does not provide high-quality processing of the installation wires, since cutting the strands of the wire is not excluded.

Closest to the proposed technical essence and the achieved result is a tool for removing insulation and twisting the cores of wires, comprising a housing with a nozzle, in which is installed a mechanism for cutting the insulation, made in the form of a sleeve with petals, at the ends of which are cutting edges, bent inward, and the clamping jaws are formed by the inner surface of the petals, made

10 with a notch. The housing of this device is a sleeve with an internal conical surface, with which it interacts with the petals 21.

15

However, the known tool does not provide high-quality processing of the wiring, as rigid fixing of the cutting elements and the lack of centering of the wire on

20 eliminates the possibility of trimming the conductors of the wire ..

Claims (2)

The purpose of the invention is to improve the quality of processing installation wires by eliminating the trimming of the wires. The goal is achieved by the fact that the mechanism for cutting the insulation is made in the form of a sleeve with radial grooves, and the cutting elements are made in the form of cams, each of which has a cutting edge, a cylindrical groove located adjacent to the sleeve, is installed in the slot of the sleeve and contacts the tapered inner surface housing. FIG. 1 shows the device, a general view; in fig. 2 is a section A-A in FIG. The device contains a mechanism for notching the insulation, made in the form of sleeve 1 with radial grooves, in which cutting element 2 is installed. Cutting elements 2 are made in the form of cams with cutting edges and | Cylindrical groove located; coaxially to the sleeve. At the opposite end of the sleeve 1 on its inner surface there is a thread into which sleeve 3 is screwed. It has an internal cone. A plug C is located inside sleeve 1, which rests against the end of sleeve 3 through spring ring 5. Screw sleeve 6 is screwed into sleeve 3 to restrict cam stroke 2. The mechanism for cutting the insulation is replaceable as interchangeable cams 2 enter while each pair of cams is intended for a specific wire cross section. Inside the sleeve 1 are placed gi 7 and 8 with clamping jaws. The rods are located on the axis 9 and are in contact with the torsion spring 10, in addition, the axis 9 connects the rods 7 and 8 to the plug 11, which is the rod 12. The ribs 7 and 8 are made with shaped shanks covering the pins 13. Pins 13 are fastened to the rod 12, play the role of cams connecting the rod 12 with 7 and 8 taps. One of the ends of the rod 12 is made in the form of a dovetail. To limit the stroke of the rod 12, a stop is used, which contacts the spring 15 and allows the clamping force of the isolator to be adjusted. of The plugs 7 and 8 with the plug 11, which sit on the axis 9. The rod 12 with the pins 7 13, the stop 1 and the springs 10 and 15 form a mechanism for clamping and tightening the insulation. The housing 16 contains a movable part 17. T gi 18 and 19 are equipped with clamping jaws with profiled shanks. The rods 18 and 19 are seated on the axis 20 and are in contact with the torsion spring 21. In plug 22) a rod 23 is placed, connected by pins 2k with profile xROSTOVIKS tg 18 and 19. The described unit is a pulling mechanism, and the rod 12, rods 18 and 19, and rod 23 constitute the basis of the telescopic pull leading The mechanism of clamping and tightening the insulation from the wire. To securely guide the wire, a guide sleeve 25 is inserted into the opening of the sleeve 1. The drive 2b of the device is made in the form of two levers pivotally connected to each other, one of which is hinged to the housing 16 and the other to be rigidly connected with the rod 23, while the fork 22, in which the rod 23 is placed, is preloaded by a spring 28. The rod 12 is connected to the fork k by a pin 29, which provides for the connection of the clamping and insulation tightening mechanism with a pulling mechanism 18 and 19 tons of the mechanism are located s inside the movable sleeve 30, the end of which engages the spring 31. In the housing device is rigidly associated sleeve 32, which is located 1.Vtulka sleeve 32 is formed with an internal cone in contact with the cams 2. The device operates as follows. Through the sleeve 25, the end of the wire is inserted into the housing for a length of 20-25 mm. When the lever actuator 26 is pressed, the sleeve 27 moves to the right, and the stem 23 does not follow the rod 23, the spring 28 preventing the plug 22 from moving. Moving along the core planes of the tailings 18 and 19, the pins 2 cause the tangles to move to the center. The dovetail rod 12 is gripped with jaws 18 and 19. II When the actuator 2b is pressed further, the rod 12 begins to move with the rods 18 and 19 and drives through the pin 29 and the fork sleeve 1 with the cams 2. Butt end 11, connected by axis 9 with tgami 5 7 and 8, rests on the end of the spring-loaded sleeve 30, we accept the spring 31 compressed, impedes the movement of the plug 1 1 and the end of the wire is caught by the jaws of the t 7 and 8. When moving the sleeve 1 the cams 2 begin to converge toward the axis along the tapered surface of the sleeve 32. Then, as the lever the drive 26 contracts the spring ring 5 moving along the tapered surface of the sleeve 3, and the cams 2 cut and clamp the insulation. During the subsequent moving of the moving parts to the right, the glands 7 and 8 move the cut off end of the insulation with sponges by 3-5 mm. To prevent accidental damage to the cores of the wire, a threaded sleeve 6 is provided, the preliminary adjustment of which limits the radial stroke of the knives due to the fact that, when moving, the sleeve 6 rests against the end of the pulling mechanism. After removing the insulation, lever actuator 26 is released. Under the action of the springs, the mechanisms return to their original position. This device provides high quality processing of the installation wires, eliminates the rejection, since the pressure on the knives is transmitted through the springs, and the movement of the mechanisms is regulated. Replaceable knives provide 7 6 notch quality, since the diameter of their central drilling corresponds to the diameter of the wires of the wire being cleaned. Claims An apparatus for removing insulation from electrical wires, comprising a housing made in the form of a sleeve with a conical inner surface, in which a mechanism for cutting the insulation with cutting elements and clamping jaws is installed, which requires that, in order to improve the quality of processing wiring by eliminating the cutting of the conductor wire, the mechanism for cutting the insulation is made in the form of a sleeve with radial grooves, and the cutting elements are made in the form of cams, each of which has a cutting edge A cylindrical groove located coaxially with the sleeve is installed in the slot of the sleeve and contacts the conical inner surface of the housing. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 157386, cl. H 02 G 1/12, 19b2. 2. USSR author's certificate in application number 2315883/2 4-07, cl. H 02 G 1/12, 1976. f ff ff j / ff 95 f g . / r AT "l yOigMJt L