SU1210665A3 - Device for forced feed of thread for textile machine,mainly for multisystem circular knitters - Google Patents

Abstract

1. Thread delivery device for textile machines, especially for multi-system circular knitting machines, having at least one endless toothed belt (6) settable in rotation by a drive source, which belt loops partially around freely rotatably mounted rolls (3), each formed as a bar cage, allocated to the individual thread-using stations, with its teeth (11) penetrating between the cylindrical bars (4) of the rolls, to each of which there are allocated thread guides (8, 9) by which a thread (7), substantially in the longitudinal direction of the toothed belt, can be introduced at one side into the loop-around region between the toothed belt and the roll and can be conducted out again at the other side from the loop-around region, characterized in that the teeth (11) of the toothed belt (6) possess a substantially approximately semi-circularly rounded profile configuration and are formed at their root each with a rounded surface (4).

Description

one

The invention relates to the knitwear arbitrariness, namely, devices for the forced feeding of threads for textile matins, in particular for multi-circular machines.

The purpose of the invention is to reduce yarn damage.

FIG. 1 shows the device, REID from the side; in fig. 2 - a gear belt; in fig. 3 shows a section A-A on FIG. one.

The device contains drums 2 installed on holder 1, each of which is made in the form of a second wheel. The drum 2 has cylindrical rods 3 located on a pitch circle 4 at equal distances x. The drum 2 spans an endless toothed belt 5. The coverage area is 180. The toothed belt 5 has a tooth 6 which is engaged with the cylindrical rods 3. The tooth 6 presses the thread 7 to the circumference of the rods 3. The thread 7 is inserted under the belt 5 in the contact zone with the drum 2 through the thread guides 8 and removed from under

squirrel15

10665

in the direction of movement of the belt 5 by the thread guides 9 and 10.

In the area of girth (fig. 3), the tooth 6 by the sides 11 of its

The 5 profile contacts the adjacent 3 rods of the reel 2, while the thread 7 passes between them.

The teeth 6 of the belt 5 have a semicircle profile (Fig. 2) and their base in the region of the depressions 12 of the belt in the areas of contact with the rods 3 of the drum 2 have a rounded surface 13. The cavities 12 between the teeth 6 of the belt 5 may have: diameter corresponding to the diameter of the rods 3 of the drum 2 for the cavity 14 between the teeth (Fig. 3).

Between the rounded surfaces 20 of the base 13 of the adjacent teeth 6 there is a straight section 15, on which a narrow groove 16 runs across the belt, located symmetrically between the adjacent teeth 25 mb, the length of which is chosen such that in the coverage area (Fig. 3 ) they correspond to the length of the pitch circle 4 rods 3 baratan 2.

sixteen

13 / J

,

7

FIG. g

Aa

one

eleven

VNIIPI Order 545/61 Circulation 408 Subscription Branch 1ShP Patent, g.Uzhgoro71, Proektna St., 4

Claims (4)

' one . THREAD FORCED FEEDING DEVICE FOR TEXTILE MACHINES, IN PARTICULAR FOR MULTI-SYSTEM ROUND-KNITTING MACHINES, containing at least one drive endless toothed belt partially covering rotatably mounted drums, each of which is made in the form of a squirrel wheel, the cylindrical rods of which are engaged with gear teeth belt, and thread guides for introducing thread under the belt in the area of contact with the drum and output from under it in the direction of movement of the belt, characterized in that, in order to reduce resulting damage threads, the belt teeth have a semicircular profile and a base in the cavities of the belt area at the areas of contact with the drum rods have a rounded surface. 2. The device according to claim 1, wherein the depressions between the teeth of the belt are in the form of a semicircle with a diameter corresponding to the diameter of the drum rods. 3. The device according to claim 1, wherein a straight section is provided between the rounded · g grounded surfaces of the bases and adjacent teeth, on which at least one narrow groove extending across the belt is made. 4. The device according to p. 3, about l and - characterized in that the groove is located symmetrically between adjacent teeth.