SU1686498A1 - Device for manufacture of electric insulating pipes - Google Patents

Description

one

(21) 4608693/07

(22) 11/24/88

(46) 10/23/1. Bul №39

(72) V.N. Khvatalov and O.A. Loginov

(53) 621.315 (088.8)

(56) USSR Author's Certificate N 1458245, cl. H 01 B 19/00, 1987.

(54) DEVICE FOR THE MANUFACTURE OF ELECTRICAL INSULATION PIPES

(57) The invention relates to electrical engineering, in particular, equipment for the production of electrical insulating tubes. The purpose of the invention is to improve the quality of the manufactured tubes. The device for the manufacture of electrically insulating tubes comprises a coil 45 with rolled material, a forming die 3 with a heat chamber, a drawing mechanism made in the form of a driving 12 and a driven 13 friction rollers with annular grooves. A disc with protrusions on the generator is mounted on one of the shafts. Under the stretching mechanism, there is a cutting mechanism with a knife kinematically connected with the driven roller 13. The device includes a mandrel located coaxially with the die 3 between the rollers 12.13 in their grooves and the flexible cable 30 passing through the die 3. The cable 30 bends around the block 32. One from the end sections of the cable attached to the mandrel. A counterweight 34 is attached to the other end portion of the cable 30. The mandrel is axially displaceable. 9 il.

The invention relates to electrical engineering, in particular, to equipment for the production of electrical insulating tubes.

The purpose of the invention is to improve the quality of the manufactured tubes.

Figure 1 shows the installation, General view; figure 2 - section aa in figure 6; on fig.Z - view of the calibrating mandrel; figure 4 - section bb in figure 1; figure 5 - section bb In figure 2: figure 6 is a section of the d-y figure 1; Fig.7-cutting mechanism, top view; Fig.8 is a section of the EE of Fig.7; Fig.9 is a view of W in Fig.7.

The device comprises a base 1, on the upper shelf 2 of which there are six tube-forming devices consisting of forming dies 3, a bushing sleeve 4 having coaxial calibration holes a in the center. The die is installed on thermal insulation torus 5. For removal

heat plates 4 are located on the sleeve 4. On the side surface of the die there is a thermocamera 7. Above the spinners there is a drive shaft 8 with an asterisk 9 connected by a chain 10 with an actuator 11. A tube drawing mechanism is located above each spinneret, consisting of stretching rollers 12 and 3 and the friction rings 14 and 15, installed on the shafts of the rollers, at 31 m the friction ring 14 is the driving drive and 15 is the driven one. An extension roller 12 and a driving friction ring 14 are mounted on the hubs 16 and 17 and are attached to the shaft by a key 18. The rolling roller 13 and the driven friction ring 15 are mounted on the hubs 19 and 20 and are connected by a sleeve 21. The hubs and sleeve are axis 22 and nuts 23 are fastened to the bracket 24 mounted on the shoulder of the spring-loaded lever 25. The spring-loaded lever is fixed on the axis 26 in the groove of the crown 00

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Ile 27 and preloaded by a spring 28. Between the extended roller 12 and the leading friction collar 14, a profiled disk 29 is installed with protrusions. The protrusions of the disk interact when rotating with the sleeve 21. The disk has depressions b in depth on the profile surface. whose length is equal to the length of the cut rough. When the tube is drawn in, the sleeve 21 does not interact with the profile surface of the disk.

The installation has a unit consisting of a mandrel 31 fixed on a flexible cable 30, having a socket k at the end, a flexible cable passes through a hole in the spinneret, is thrown over bpsk 32, and at the end has a water element 33 in the form of a counterweight. The counterweight has an abutment 34 which restricts the movement of the cable. The support 31 is in annular grooves with extension rollers 12 and 13. During drawing 28, the friction rings 14 and 15 are pressed, and the extension roller 13 is pressed towards roller 12 tube and mandrel 31

Under the dies and pulling mechanisms, there is a tube cutting mechanism consisting of body 35, in which rectangular grooves 36 are located. In the slot of the carriage, perpendicular to its movement, there is a spring-loaded knife 37 with a cutting edge d tilted to the top Knocking at angle A, and opposite to the cutting edge of the knife, is the anti-blade 38 with cutting edge f.

The lower arm of the lever 25 is connected pivotally through the tug 39 with the carriage 36 of the cut mechanism. A plate 40 with a guide hole q for the tube is mounted on the countercut 38, and the housing 35 also has a longitudinal slot I in the passage of the tube in the protrusion 41 of the housing. The knife is connected to the carriage axis 42 and podzh spring 43,

In the upper part of the base, roll material 45 (tape) is mounted on the brackets 44. An axle 47 is mounted on the side posts 46, on which the blocks 32 are fixed with a groove for moving the belt, and deeper with a run for the cable 30.

In order to collect the cut tubes, a container 48 is installed under each piece mechanism.

The device works as follows.

Manual mode.

The film from the roll 45 through the block 32 is fed to the die plate 3, where it is heated to a temperature below the degradation temperature and formed into a tube. The die is maintained at a constant temperature. Next, the tube enters the heat sink sleeve,

where its temperature drops to the limit at which the mechanical properties of the tube material are maintained. The resultant tube is put on the mandrel 31, filled in the annular grooves of the draw rollers. Then the automatic operation mode of the installation begins,

Shaft 8 rotates from drive 11. Rollers 12 and 13 are preloaded by spring 28,

begin to pull the tube, and the roller 13 receives rotation from the drive shaft through a pair of friction rings 14 and 15. Together with the tube, the mandrel begins to move, simultaneously moving the weight with the counterweight. The tube moves due to the force of the trench between the surface of the annular grooves of the extension rollers and the tube, and the material of the calibrating mandrel (steel) is chosen such that the friction force between

tube and mandrel more driving forces. After feeding a tube of a given length I (disk profile 29 at an angle of ac with a constant radius), the protrusion of the disk profile is located on the sleeve 21 mounted on the axis 22 together with a long roller 13 and a follower ring 15

The spring-loaded lever 25 rotates on axis 26, kinematically, the chain of friction rings 14 and 15 is broken, and

the extension roller 13 stops rotating and the mandrel 31 returns to its original position under the action of the counterweight 33. The protrusion 34 of the counterweight rests on the base. Tube stops trying since she

not pressed to the long roller. The cantilever end of the spring-loaded lever 25 moves the carriage 36 with the knife 37 through the hinged rod 39. The knife cuts off a tube of a given length, the cut tube through the hole n D of the housing 35 falls into the container 48.

Upon further rotation of the profiled disk, the sleeve 21 with the roller 13 and the ring 15 is returned by the action of the spring 28 to its original position. The kinematic chain of the pulling mechanism closes and the tube is fed to the specified length along with the mandrel. Then the cycle of operation is repeated. The use of the present invention improves reliability by eliminating tube slippage in stretching rollers, increasing the effort to tighten them and the strength of the tube to rub against the mandrel. This creates better conditions.

mandrels, increases the reliability of the installation when worn rollers

Claims (1)

The invention The device for the manufacture of electrical insulating tubes containing a coil with a roll material, a guide block, a forming die with a heat chamber, a stretching mechanism, made in the form of drive and driven friction rollers with ring manholes mounted on the shafts, and mounted on one of the shaft of a disk with protrusions on the generator, capable of interacting with another vals vi located under the mechanism of the cutting mechanism with a knife kinematically connected with the driven role which, in order to improve the quality of the tubes being manufactured, it comprises a mandrel located coaxially with a die between the rollers in their grooves, an envelope guide block and a flexible cable passing through the die with a counterweight at one of its end sections, the other end portion of the cable is attached to one of the end portions of the mandrel, and the latter is adapted for axial movement. Have but / 50 -51 t I Pt / g 2 FIG. Bb FIG. 9b 91 2Ј J j 61 g 861/9891 8 gpf 9Ј / c K and f Wi #F tt FIG. 9