CS239112B1 - Dosing device with supply package with veft yarn for multished weaving machines - Google Patents

Abstract

This is the dosing of the weft yarn on the spool in the creaser directly from the bulky cross wound cylindrical coils, for example directly from BD machine coils. Counter coil fitted with a circular frame with safety adjustable languages is simultaneously and formally arranged on a common yoke holder. A switchgear is provided in the caliper an oval-shaped eyelet whose horizontal the axis is the tangent of the master axis eyelids. Weft draw with oval hole the divorced eye continues perpendicularly from the axes of the master bobbin to the eyelet which is fixed in the dispenser holder equipment.

Description

A weave-brick device for dispensing weft feeders with the possibility of direct winding from a cylindrical cross-wound spool, in particular from a BD cross-spool in a working process on weaving machines with advancing shed, provided with weft supply carriers of dispensing units with units winding ·

The weft supply carrier of the known metering device consists of a tube mounted on the machine support · The tube is slightly longer than the bobbin inserted therein to prevent the yarn from breaking at the bobbin edge ₀ A significant disadvantage of said known bobbin holder is that winds around the overlapping spool around its part. This increases the wrapping angle of the yarn around the holder and consequently its tension so that it breaks. Another disadvantage is the difficulty of pulling the yarn through this spool holder, cross-wound cone coils ·

Another known device by means of a hollow holder extending beyond the retracted spool is provided with oblique openings connected at the bottom by means of a sleeve to a source of compressed air for the purpose of guiding the thread through a cavity. The disadvantage of this device is that it also uses a cross-wound cone with smaller circumferential rags and the yarn is waxed.

All these drawbacks of the metering devices used hitherto can be overcome by the solution according to the invention, which consists in that it contains a guide yoke with an opening for the weft unwinding from the master spool being oval and its center adjoining the central axis of the positioning spool. Further weft withdrawal from the oval opening of the guide loop to the guide loop provided in the second arm of the holder forms a right angle with the axis of the master coil · A circular frame is mounted around the periphery of the master coil

239 112 with retaining tongues for limiting the balloon being formed, which are adjustable relative to the periphery of the master spool.

The advantage of this dispensing device arrangement is that it is possible to use the above-mentioned dimensional cross-wound weighing coils, in particular directly from BD machines, for dispensing the weft into the plungers. The windings from the cylindrical bobbins do not slip, the wrapping angle is smaller and the yarn does not need to be waxed. This prevents the brakes from clogging and impairing their functions.

In order to further illustrate our solution according to the invention, the drawings are attached, in which Fig. 1 shows the weft flow from the master spool to the weft coil in the inserter in a side view, Fig. 2 shows a side view of the master spool in a round-frame dispensing device with locking Fig. 3 shows a detail of the caliper with an oval opening and Fig. 4 shows the coil pin data of the fuse holder with the fuse in cross-section.

Holders 2 are fastened to the carousel 21 of the dosing device. Each bracket 2 on the right arm 7 * comprises a pin 11 for the position coil 1 and a circular frame 8, part on the second arm 7 of the holder 2 is fastened with a yoke 2 and guide ring 2 «» The counter coil 1 together with the circular frame 8 on the pin 11 is secured against falling out by a spring-loaded fuse 17. The spring-loaded fuse 17 is housed in the opening 19 of the pin 11 and consists of two sliding means 20 and a spring 18. 1 has, on its inner circumference, regularly arranged flexible tongues 2t whose position is adjustable relative to the periphery of the master coil 1. The yoke guide eyelet J has an oval opening formed in the direction of the pulling weft yarn 2 from the master spool 1, the center of which extends from the central axis A of the master spool 1. The weft yarn 2 withdraws from the oval eyelet hole 4 into the guide eyelet 2 in B direction and further into the brake 12 up to the guide eyelet 16, forms an angle < C with the axis A of the master coil 1, which is close to a right angle of 90 °. The weft yarn 2 is further wound from the master spool 1 through the guide eyelet 2, the guide eyelet 2 ® of the brake 12 through the winding unit 10 and the guide eyelet 16 on the weft yarn 13 in the catchers 14, which follow a continuous endless path il.

Claims (3)

SUBJECT OF THE INVENTION 239 112 lo Dispensing device and weft yarn master spool in multi-shed weaving machines, where the weft is dosed to the advancing picker weft spools by an infinite path partly common to the winding unit path, characterized by comprising a yoke (3) with a guide loop (4) together with a counter coil (1) and a circular frame (8) mounted on a support (7), wherein the guide lug (4) of the yoke (3) is provided with an oval hole (6) / centered on the center axis (A) of the counter coil (1) ) for directing the weft yarn (2), wherein the further removal of the weft yarn (2) from the oval bore (6) of the guide loop (4) in the direction (B) to the guide loop (5) in the holder (7) grips with the axis (A) master coils (l) prauA? hel (0) · Dispensing device according to claim 1, characterized in that a circular frame (8) with locking tongues (9) is arranged on the holder (7) around the periphery of the master spool (1) to limit the balloon being formed <> Dispensing device according to Claims 1 and 2, characterized in that the locking tongues (9) are adjustable in the annular frame (8).