SU1341287A1 - Versions of thread feed arrangement - Google Patents

Abstract

1. A device for feeding a yarn containing a drum mounted on the axis of rotation of thread podpigiss, a driving endless belt in contact with the working surface of the drum, and output and input thread guides, the last of which is mounted with reciprocating movement along the drum axis, characterized in that In order to reduce the input tension at a Z1 G WW a passive feed thread, the output guide thread is mounted for movement around the drum along an arc of a circle whose center is dix to the drum axis. 2. A device for feeding the thread, containing a rotating threading drum on the axis, a driving endless belt in contact with the working surface of the drum, and input and output thread guides, characterized in that, in order to reduce the input tension during passive feeding of the thread, the output thread guide is stationary relative to the drum, and the input thread guide is mounted for movement around the drum along an arc of a circle lying in a plane at an angle to the axis of the drum. 3. A device according to claim 2, characterized in that the inlet thread guide is attached to the rotating glass at an angle to the axis of the drum. and Vt (L with ip 33

Description

The invention relates to knitwear industry, in particular, devices for feeding the yarn when joining articles having areas with different stitch patterns or yarn lengths in the loop, namely when using knitwear or coupons for round machines.

The purpose of the invention is to reduce the input tension of the thread while in the position of the thread outside the belt by eliminating the contact between the thread and the rotating thread-supply drum and reducing the inflection points of the thread relative to the thread guide thread 35 installed on the axis 34 (total angle drum 35, rotatable

modifies with pin 26 fixedly connected to lever 17. The latter has a groove 27 through which the cable 28 passes with the tip 29. The jacket 30 of the cable 28 is fixedly fixed in the opening 31 of the housing 5. The cable 28 is connected to a knitting machine control mechanism (not shown). The housing 5 is fastened to the base 33 of the tricot car by means of a screw 32.

In the embodiment (Fig.2 and 3), the device contains;

thread guiding elements).

Figure 1 shows the proposed device, a General view; Figures 2 and 3 are constructive variants of the arrangement of the thread guides; figure 4 - diagram of the operation of the device in the first embodiment in the position of the thread under the belt; figure 6 - scheme of the device in the first embodiment in the position of the thread outside the belt; figure 6 - diagram of the device according to the second variant in the position of the thread under the belt; figure 7 - diagram of the operation of the device according to the second variant in the position of the thread outside the belt.

The device according to the first embodiment (Fig. 1) contains a thread-giving drum 1, which bends around an endless driving belt 2. The drum 1 is mounted on a bearing 3, which is placed on a hollow axis 4 fixedly mounted in the housing 5, and is held on it by means of a nut 6. Inside axis 4 has a rod 7 loaded with a spring 8, which is held on it by means of a bolt 9 connected to the thread-feeding drum 1 by a threaded connection 10. The rod 7 is equipped with a screw 11 interacting with the nut 12. Last, by means of the sleeve 13, holds 45 less 37 (fig.Z and 6). lives in the nest 14 of the axis 4. Sleeve Eye path of the eye

The coils 37 and 38 coincide (Fig. 7), and the feed thread 45 is in a position outside the belt. The axis of rotation of the input thread guide is located at angles to the axis 34 of the barrel 35 of the drum 35, which ensures that the guideline 37 is raised above re 36 when the thread 45 is pulled out from under repair 36 (Figures 2 and 7) and the thread 37 is lowered when the thread 45 is inserted under

13 with screws 15 fastened to housing 5. The rod 7 is provided with a pusher 16, which cooperates with a lever 17 mounted on an axis 18. A bracket 20 is attached to the rod 7 by means of a nut 19, which carries the output thread guide 21.

In the housing 5, a slider 22 is mounted for vertical movement, in which the inlet thread guide 23 is fixed. The slider 22 is loaded with a spring 24, and its movement is limited by an abutment 25. The slider 22 interacts with a pin 26 fixedly connected to the lever 17. The latter has a groove 27 through which the cable 28 passes with the tip 29. The shirt 30 of the cable 28 is fixedly fixed in the opening 31 of the housing 5. The cable 28 is connected to the knitting machine's control mechanism (thread guide drum 35 mounted on the axis 34 and driven into rotation

zan). The housing 5 is fastened to the base 33 of the tricot car by means of a screw 32.

In the embodiment (Fig.2 and 3), the device contains;

endless belt 36 in contact with the working surface of the drum 35, a movable input thread guide

37 and a fixed output filament 38 with ceramic eyes, a housing 39 carrying a means for transmitting movement to a movable input guide 37, which, in the proposed embodiment, is designed in the form of a flexible cable 40 and an elastic low stretch thread 41 wound on a cup 42. thread guide 37 rigidly with: one with glass 42 worn on ii, .j

a thrust bearing (not shown) that sits on axis 43. On axis 43 also is located a spring 44 returning the thread guide 37 to its original position, in which the longitudinal axis of the eye

35

40 45 less 37 (fig.Z and 6). Eye path

The coils of the guides 37 and 38 coincide (Fig. 7), and the feeding thread 45 is in a position outside the belt. The axis 43 of rotation of the input thread guide 37 is located at angles to the axis 34 of rotation of the drum 35, which ensures the lifting of the thread guide 37 above the belt 36 when the thread 45 is pulled out from under the belt 36 (FIGS. 2 and 7) and the thread guide 37 is lowered when the thread 45 is inserted under the re0

five

The input thread guide 37 is an arc of a circle lying in a plane intersecting the thread guide drum 35 at an angle to its rotation axis 34.

The device in the first embodiment works as follows.

Pressing the lever 27 brings it to the lower position (in Fig. 1, shown as a dashed line) and thread the thread into the thread guides 23 and 21. Then release the lever 27 and under the action of 8 and 24 it returns

one

to the starting position. At the same time kronsch- - -.J-. , f i i ..L1

Theine 20, when the screw 11 interacts with the gank 12, rotates about the axis 4 of the thread guide drum 1.

When starting the machine to work and the movement of the belt 2 thread And goes into position under the belt (figure 4), which ensures its supply with a given speed in accordance with a given length of nits in the loop. This feeding mode is carried out in the presence of the main section of the product, for example, pagolanka of a stocking.

When moving to the remaining sections (heels, tracks, toes, dividing rows) from the knitting machine control mechanism, the cable 28 is moved. At the same time, its tip 29 moves the lever 17 to the lower position (shown in Fig. 1 by the dotted line). When the lever 17 interacts with the pusher 16, the rod 7 moves with simultaneous rotation of the screw 11 relative to the nut 12. In this case, the lever 20 with the output thread guide 21 rotates relative to the drum 1 and takes the position shown in Fig. 1 by the dashed line.

At the same time, when the pin 26 interacts with the slider 22, the input thread guide 23 moves downward (shown in Fig. 1 by a dashed line). As a result of these movements, the thread H comes out from under the belt 2, and out of contact with the drum 1 and without additional bends with respect to the thread guides 23 and 21, as well as the drum 1, is sent to the zone in the undercut (Fig. 5).

The device according to the second variant operates as follows.

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In the initial position (Fig. 7), in which the eyes of the thread guides 37 and 38 are located one above the other, the thread 45 is threaded through them and sent to the loop-forming system in the engaged machine,

In this position, outside the belt, in that part of the knitted product, in which the speed of movement of the thread 45 will be less or more than the linear speed of movement of the belt 36.

When switching to the dosed (forced) feed mode 45, the last 15 is transferred to the position under the belt, turning the cup 42 with the help of a flexible cable 40 and a weakening thread 41. Rotating the cup 42 ensures that the input thread guide 20 37 rotates approximately at an angle of 200 240 ° from the initial position and insertion of the thread 45 under the belt 36.

To switch from the dosed feed mode of the thread 45 to the passive mode of supplying 25, the tension of the cable 40 is reduced and the spring 44 rotates the cup 42 and the input thread guide 37 back to its original position, which eliminates the interaction of the thread 45 with the 30 rotating drum 35 and reduces the number of points the twist of the thread is the total angle of thread coverage of the thread-conducting elements (Fig. 7).

The economic effect of using the proposed device on one circular-blender machine while in stockings and tights made of cotton and cotton yarn is approximately 0.2–0.3 thousand. 0 rub. in year.

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FIG.

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Editor A.Lezhnina

Compiled by O. Lunkina Tehred I. Popovich

Order 4409/35 Circulation 400 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG. 7

Proofreader A. Obruchar

Claims (3)

1. A device for feeding a thread, comprising a thread feeding drum mounted on an axis of rotation, an endless drive belt in contact with a drum working surface, and an output and input thread guides, the last of which is mounted with the possibility of reciprocating movement along the drum axis, characterized in that, in order to reduce the input tension with passive filing, the output thread guide is installed with the possibility of moving around the drum along an arc of a circle, the center of which is located on the axis of the drum on. 2. A device for feeding a thread, comprising a thread feeding drum mounted on an axis of rotation: an endless drive belt in contact with the working surface of the drum, and input and output thread guides, characterized in that, in order to reduce the input tension with passive filing, the output the thread guide is fixed relative to the drum, and the input thread guide is mounted to move around the drum in an arc of a circle lying in a plane at an angle to the axis of the drum. 3. The device pop.2, characterized in that the input thread guide is mounted on a rotating glass at an angle to the axis of the drum.