SU1224302A1 - Device for automatic piecing of thread on ring frames - Google Patents

Abstract

For the automatic elimination of a thread break on a spinning station of a ring spinning machine, in which a maintenance appliance movable along the ring spinning machine draws off the broken thread (29) from the bobbin and, for joining to the roving (3) coming from the pair of withdrawal rollers (1, 2) of the drafting unit, presents it to the latter, the drawn-off thread (29) is first presented to the roving (3) laterally and is thereupon moved towards this. The thread guide (8) is arranged on a lever (17), the pivoting movement of which commences when the piecing roller (7) is pressed against the lower roller (1) of the pair of withdrawal rollers (1, 2). <IMAGE>

Description

This invention relates to the textile industry and relates to devices for automatic HHTeii priming on ring spinning machines.

From Japan patent No. 52-50285 (3-series, cl. 43 V, collection No. 48, 1977), a device is known for automatically grabbing threads on ring spinning machines, which has a picker installed on the lower cylinder of the exhaust device of the machine. roller and yarn guide.

The tapering roller has a thread-guiding screw groove on the cylindrical surface. When the pickup roller comes into contact with the lower cylinder of the outlet pair, it is rotated and the thread in the groove moves along two or more ends of the lower cylinder and is connected to the end of the sliver hanging from the outlet pair.

The disadvantage of this device is the unreliability of the thread and the sliver due to the difficulty of making the screw groove in accordance with the dimensions of the thread section. If the groove has too much depth, then the thread may not touch the end of the mychko. In the case of a small depth of the thread, the thread may come out of it when the spindle starts. .

The purpose of the invention is to increase the reliability of thread knitting.

The set goal in the device for automatic threading of threads on ring spinning and twisting machines, containing a tamping roller and a yarn feeder installed with the possibility of pressing the lower cylinder of the exhaust pair of the machine’s pull-out device, is installed by means of a lever mounted with the possibility of turning tamper roller while pressing it to the bottom cylinder

FIG. 1 shows the device in the initial position, top view; in fig. 2 shows section A-A in FIG. one; in fig. 3 - the device in the working position, top view, in FIG. 4 shows a section BB in FIG. 3

Under the lower cylinder 1 with the pressure valve 2 of the exhaust pair of the exhaust device (not shown) of the ring spinning machine, a suction tube 3 of the mop-catcher is installed, having an inlet 4 for trapping the end 5 of the small 6.

On the machine, a two-sided automatic sampling device, having a housing 7, on which the pick-up roller 8 is mounted, is mounted for movement,

yarn feeder 9 and knife 10, covered with a casing (not shown). The tapering roller 8 is freely mounted in the plug 1 1 with the possibility of pressing against the lower cylinder 1. The plug 11 is mounted on two guide rods 12 and 13, which are placed in the openings of the housing 7 and on which the stop 14 is fixed.

Between the fork and the wall of the case on

The rods are fitted with springs 15 and 16. A suction nozzle 17 is installed under the rollover roller 8.

The guide 9 is made of two curved plates 18 and installed

on the lever 19 mounted on the housing by means of the axis 20, which can be rotated relative to the pickup roller 8. In the slot 21 of the lever 19, a guide pin 22 is mounted on the stop 14.

The safety ring 23 is fastened on the lever 19 and seated on opposite sides of the yarn feeder 9. 24 and 25 pressed to the ring by 23 nuts 26, screwed on the threaded part 27 of the lever 19.

The knife 10 is mounted in the housing 7 with the possibility of movement by means of a lever 28, which at one end enters the recess 29 of the coke and extends the guide pin 22 of the support 14 with its bent end 30, the lever 28 is rotatably mounted on the axis 31.

The device works as follows.

When the thread breaks in the area between the spindle and the spraying device of the spindle oil, the end 5 of the sliver 6 coming out of the outset pair is sucked in by the suction of air through the opening 4 into the tube 3. On the incoming signal the device for automatic stopping of the stop It is located at the appropriate machine station. After finding on the package on the spindle of the end of the thread 32. And winding it of a certain length

From the package, the thread is inserted into the slider, fed to the tamping roller 8, superimposed on it, held between the plates 18 and the yarn guide 19 and near the knife 10. The yarn driver 9 is positioned so that the thread is located at a distance from tutorial roller.

The device is then brought to the exhaust pair of the exhaust device and the tamping roller 8 comes into contact with the lower cylinder 1 of the exhaust pair. Further movement of the device in the direction of the exhaust pair causes the lever 19 to rotate and the yarn feeder 9 moves along the roller 8 to its middle part along the length. Wherein

the plates 18 move the thread along the roller 8 and bring it to the end 5 of the sliver 6. Simultaneously, the knife 10 is moved, which cuts the end of the thread to a certain length. When the thread is connected to the sliver, it is curled, which is promoted by the suction nozzle 17 placed under the roller 8, which ensures that the tip of the sliver comes out of the opening of the tube 3 and is pressed against the thread (Fig. 4). When the roller 8 departs from the lower cylinder 1, the lever 19 returns to its original position.

This device provides reliable currying of threads, regardless of the size of the cross section.

FIG. 3 B-b.

Editor L.Avramenko

(rieAlcomponent A.Tursin

Tehred I.Popovich. IoErday Corrector

1889/23 Circulation 432. Subscription

VNIIPI USSR State Committee

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

Branch PPP Patent, Uzhgorod, Proektna St., 4

Claims (1)

DEVICE FOR AUTOMATIC ATTACHING OF THREADS ON RING SPINNING MACHINES, comprising a take-up roller and a thread guide installed with the possibility of pressing against the lower cylinder of the exhaust pair of the machine’s exhaust device, characterized in that the thread guide is mounted by means of a lever mounted while turning the roller against the lower . fi.1