SU1684847A1 - Device for stripping of insulation from wires - Google Patents

Abstract

This invention relates to instrumentation technology and can be used to remove insulation from microwires. The aim of the invention is to improve the reliability and quality of the insulation removal. A device for removing insulation from wires contains a laser 1, generating radiation with a wavelength of 1.06 µm, a matching lens 2 for introducing radiation into a single-core optical fiber, an overpressure source 5. connected through an introductory gas chamber 6 with a flexible pipe 7 in which the optical fiber, the output end of which is eccentrically fixed on the rotating impeller, which makes it possible to scan the laser radiation over the wire. The radiation is focused on the wire using an annular parabolic mirror 17. The device has a simple structure, is small, and has a low weight. convenient and practical in work. 3 il.

Description

Fig /

The invention relates to the field of instrumentation technology, in particular to devices for pre-production, and can be used to remove the insulation type of IMED from microwires.

The aim of the invention is to increase the reliability of work and the quality of stripping insulation by eliminating core damage.

Fig. 1 shows a schematic diagram of the device; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1.

The device comprises a laser 1, generating radiation with a wavelength of 1.06 µm, a matching lens 2 for introducing radiation into a single-core optical fiber, including a light guide core 3 in the sheath 4, a source 5 of excess gas pressure, connected through an inlet gas chamber 6 to a flexible pipe 7. The laser radiation 1 is introduced into the input end 8 of the fiber, one end 9 of which is fixed at a certain length relative to the housing 10, in which in the guide 11 for rotational movement (in the bearing) an impeller is mounted with Lem of wire 12, with blades 13 and additional guide for rotational movement (with rolling bearing) In additional guide 14 (in the inner bearing hole), an output end 15 of optical fiber B of guide 16 is installed for rotational movement (in a rotation bearing) a parabolic mirror 17 is placed, and the blades 18 of the additional impeller are also installed. A guide 19, for example, a bushing, of the wire 20 is fastened to the body 10. The end 9 of the optical fiber is fixed in the body 10 with the help of the bushing 21 with holes 22 for the passage of gas flow from the source 5 of the excess gas pressure.

A balancing element 23 is mounted symmetrically to the impeller relative to the placement of the output end 15 of the optical fiber, and at the end of the holder 12 of the wire 20 is a reflector 24 of the gas flow.

The device works as follows.

The laser radiation 1 is focused by a matching lens 2 at the entrance end 8 of the light fiber (light guide core 3). The light guide core is made of a single quartz fiber having a diameter of 0.1-0.15 mm and a length of 1.5-2.0 m, which allows With minimal losses, it is possible to transmit pulsed laser radiation with a wavelength of 1.06 µm, an energy per pulse of the order of 0.02–0 1 J, and a pulse duration of 5–10 ns. From the source of excess gas pressure, a gaseous medium, such as air or nitrogen, is introduced into the flexible pipe 7 through the inlet gas chamber 6.

The flexible pipe 7 is fixedly fixed in the housing 10 by the output end, and the end of the optical fiber is fixed inside the pipeline by means of a sleeve 21 with openings 22 (figure 2).

0The end of the wire 20, which is removed from

the insulation is introduced into the wire guide 19 and through the hole in the parabolic mirror 17 is inserted into the wire holder 12 in the form of a tube of the required length,

5, the inner diameter of which is slightly larger than the diameter of the wire 20. Directioning 10 and 19 and the holder 12 of the wire 20 allows positioning the wire relative to the laser radiation, which is output from the output end 15 of the optical fiber and focused on the wire 20 by a parabolic mirror 17.

The output end 15 of the optical fiber is installed in the additional guide 14

5 for rotational movement (in the inner bore of the bearing), which in turn is eccentrically mounted on the impeller with blades 13, which cause the impeller to rotate (when it is blown

0 gas medium from the source of excess gas pressure 5), and, consequently, the output end 15 of the fiber. This design allows scanning the laser radiation around the wire 20 without twisting the fiber when scanning for placing the output end of the fiber in the inner bore of the bearing. To rotate the impeller, the latter is mounted in the housing 10 in the guide

0 11 for rotational motion (in the inner bore of the bearing).

The gas jet that passes through the blades 13 spins onto the blades 18 of the additional impeller and causes it to rotate together with a parabolic mirror 17. The rotation of the mirror allows additional radiation to be scanned over the wire 20, which reduces the requirements for radiation positioning accuracy and accuracy of positioning

0 tangling the wire 20 with the holder 12 and the guide 19.

At the end of the holder 12 of the wire 20, a gas flow reflector is emitted, for example, in the form of a conical thickening of the tube

5 of the holder 12. The reflector 24 is designed in such a way that the gas source reflected by it is directed onto the surface of the parabolic mirror 17 to blow off particles of the destroyed insulation of the wire 20 from its surface.

For balancing the rotating mass of the impeller with the output end 15 of the light guide on the impeller, a balancing element is provided

To reduce the reactive torque of the impeller with blades 13, its blades are turned in the direction opposite to the rotation of the blades 18 of the additional impeller, which provides a different direction of rotation of the impellers.

To remove the insulation, the wire to the required length is introduced into the device (more precisely, the device is pushed onto the wire), laser 1 is turned on, gas flow is fed into the device, and the device is manually moved relative to wire 20 with the desired, experimentally selected speed, due to which laser radiation scans wire over the entire specified length of isolation isolation

The proposed device is small-sized, easy, simple to use. The use of optical fiber for transmitting laser radiation allows the operator to bring the device to the desired workplace, the distance to which from the laser is determined by the length

used fiber optic The device works in any position of the pores ticked, inclined horizontal

Claims (1)

Claims An apparatus for removing insulation from wires, comprising a light guide one end of which is optically coupled to a laser and the other to a focusing system of an optical scanning unit, parts of which are installed in a housing with a guide element for placing the wire and have the possibility of rotation around its axis from privada, different to that. that, in order to increase the reliability and quality of insulation removal by eliminating core damage, the scanner unit contains an impeller with a rotation support to accommodate the end of the optical fiber optically associated with a focusing system made in the form of an annular concave parabolic mirror, while the impeller and the mirror mounted coaxially and rotatably in opposite directions, and the actuator is pneumatic. A-l ,ten FIG I 23