SU1388293A2 - Apparatus for feeding rubber mix to worm-screw machines - Google Patents

Abstract

The invention relates to the production of rubber processing. The goal is to ensure a uniform supply of rubber to the worm machines when the diet is changed. For this, the knife drum is made in the form of clips (ON) mounted on the shaft and spring-loaded relative to each other. Each OB is formed by interconnected rings. On the end surface of one of the outer rings of each OB, screw bevels are made from the inside. Supporting bushings with screw bevels made on their surface, corresponding to bevels of the outer rings, are mounted on the shaft for rotation. Each knife is mounted on the OB. When changing the feeding mode, the width of the rubber band is changed. The bearing sleeves are rotated, and the blades with knives are displaced relative to each other along the shaft axis. This will allow to change the cutting depth and to obtain jumpers along the edges of the strip along the width corresponding to the width of the resulting tape. 8 il. (L

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The invention relates to the production of processing rubber mixtures and is an improvement of the known device described in ed. St. No. 1323400.

The aim of the invention is to provide a uniform supply of the rubber mixture to the screw machines when the feeding mode changes.

FIG. 1 schematically shows the device; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. 2; in fig. 4 shows a section B-B in FIG. 2; in fig. 5 - holder; in fig. 6 is a cross-section of the FIG. five; in fig. 7 and 8.. Configuration of the tape being cut with the minimum and maximum cutting widths.

The device for feeding the rubber mixture to the screw machines contains a frame 1 on which the noduay conveyor 3 and the clamping conveyor 4 are mounted, between which the cut rubber strip 5 moves. On the output strip 5 of the conveyor 3 and 4 there is a mechanism for cutting the rubber strip on the tape, consisting of a supporting knife 6 and a knife drum 8 fixed to the shaft 7 with knives 9 and 10, the cutting edge of which is angled to the axis of the shaft. The shaft 7 rotates from the drive 11. On the shaft 7, there are cuffs 12 which interact with the rollers.

13 fixed on double shoulders

14, located on the lateral ends of the knife-holder 15, on which the supporting knife 6 is mounted. The knife-holder 15 with levers 14 is fixed to the frame 1 by means of an axis 16. A scraper 17, hinged to the frame 1 by means of an axis 18 and pushed against the upper surface of the supporting knife 6, is supported. to the knife 6 by a spring 19. Under the feed conveyor 3, a pallet 20 is installed with a strip being cut 5. The knife drum 8 is made in the form of two clips 21 mounted on the shaft 7, moving relative to each other. Each of the clips 21 is a plurality of rings 22 interconnected by a strap 23 on which knife 9 or 10 is attached. The clips 21 are freely attached to the shaft 7 and fastened with a key 24 from the turn. On the end surface of one of the outer rings 22 Each casing 21 has screw bevels 25 on the inner side, interacting with similar bevels of support sleeves 26 mounted on shaft 7 with the possibility of only rotation relative to the shaft. The clips 21 on the shaft 7 on each side of the knife drum are held

by their bevels 25, they are pressed against the bevels of the support sleeves 26 by springs 27 mounted on the shaft 7 between the cams 12 and the outer rings 22 of the clips 21. Additional clamping of the clips 21 against each other is also possible with the aid of tension springs 28.

The device works as follows. The resilient strip of material 5 is filled between conveyors 3 and 4, including the drive 2, is fed into the cutting zone along the scraper 17. At the same time, the drive 11 of the shaft 7 is started, which begins to rotate the blade drum 8 with the cams 12. The cams 12 interact with the rollers 13 of the two shoulders levers 14, rotate the knife-holder 15 and bring the supporting knife 6 alternately to the knife 9 and 10, as a result of which the strip is cut into a zigzag tape 29.

In order to supply the worm gear with a modified mode of operation, it is necessary to change the width of the zigzag tape 29 resulting from cutting the strip 5. To do this, turn the support sleeves 28 on the shaft 7 and, accordingly, change the speed of rotation of the drive shaft 2 due to the interaction of screw bevels on the support sleeves 26 and on the outer rings 22 of the casing 21 with knives 9 and 10 of the mixer relative to each other along the axis of the shaft 7 ..

0 This allows you to change the cutting depth of the strip 5 and to obtain jumpers along the edges of the strip along the width corresponding to the width of the zigzag tape 29 obtained, thereby ensuring uniformity of supply of the rubber mixture to the worm machine.

Claims (1)

Invention Formula Device for feeding the rubber mixture to the worm mashins according to the ed. St. No. 1323400, characterized in that, in order to ensure uniform supply of the rubber mixture to the worm gears when changing the feeding mode, the knife drum is designed as spring-mounted and spring-loaded one relative to another clip, each interconnected by rings connected to each other. On the inner side of the outer surface of one of the outer rings of each cage there are screw bevels, and supporting sleeves mounted on their surface are mounted for rotation on the shaft 0 helical bevels corresponding to the bevels of the outer rings, with each knife mounted on the holder. 0 (pus.i Suff / i 12, / J 12 b / /  / / / Buff b fig 2 21 GB 21 lU / 5  12 / " f4 G2 7 LI H 22 25 26 / f / 22 -n 29 Have sriye.7 22 23 eri a 6 .29 FIG. eight