SU1320276A1 - Device for severing yarn delivered by spindle of spinning/twisting machine - Google Patents

Abstract

The invention relates to the textile industry. The purpose of the invention is to increase the reliability of work. The pivot lever of the tool is located in the holder 6. The lever arm 1 rests on the sliver 3, and the arm 5 is located in the supports of the holder 6 with the possibility of axial movement. On the shoulder 5, a counterweight 8 is fixed, the shoulder 5 is equal in mass. The distance from the center of gravity of the counterweight 8 to the axis of rotation of the lever is less than the distance from the center of gravity of the shoulder of 1 to this axis. In the event of a break 3, shoulder 1 first slowly, and then with acceleration, turns toward the spindle 9 and closes the thread 4. 2 Cp. f-ly, 2 ill. S (L ISD o Y m O5

Description

The invention relates to textile industry, specifically to spinning and twisting machines during the development of a combined twisted yarn on them, when a complex yarn is twisted around the spindle from a package located on the floor spindle.

FIG. 1 shows the proposed adaptation; FIG. 2 is a view A of FIG. one.

The attachment contains a curved lever, one shoulder 1 of which has a support on the sliver 3 coming out of the exhaust device 2 and thread break 4 when the tape 3 is broken, and the second shoulder 5 of the curved lever is freely seated in the slide supports of the holder 6 mounted on the rod 7 located along the machine and carrying thread separators (not shown). On the shoulder 5, which is the axis of the lever lever, a counterweight of 8 "is rigidly seated

The holder 6 is positioned between the spindle 9 and the exhaust pair of cylinders of the exhaust device 2 so that the axis of its supports supporting the arm 5 is perpendicular to the path of movement of the stick 3 directed from the exhaust device to the spindle channel 9.

The bend angle of the lever is at an equal distance from the point of contact of the arm 1 of the lever with the bow 3 coming out of the exhaust device, and from the points of contact of the lever with the upper spindle spindle 9 on which it falls down in the event of a broken arm (shown dotted line).

Being in the working position, the lever arm 1 occupies a position close to vertical, with a slight (2-3 °) inclination in the direction of the sliver 3. This position is adjusted by the stop screw 10, which is fixed on the tide 11 of the holder 6 and rests on the lever on some distance from its axis of rotation.

In the working position, the counterweight 8 through the washer rests on the left support of the holder 6, and the lever rests on the screw 10.

With equal masses of the arm 1 lever and; the counterweight 8, the moment of rotation of the arm 1 towards the sliver can be determined by the difference in the torques created by the lever and the counterweight.

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five

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The device works as follows. .

With equal masses of the lever and the counterweight on the larger lever arm, the moment of rotation of it will also be greater than the opposite moment of rotation of the counterweight.

But in the working position, when the lever with the aid of the stop is retracted at a slight (2-3 °) angle from the vertical, its shoulder, like the shoulder of the counterweight, will be equal to the distance of its center of gravity to the axis of rotation multiplied by the tangent of this angle. At small angles, the tangent represents an insignificant value, therefore (there is no significant difference in the arms of the lever and the counterweight) the absolute effect of the lever on the sliver is insignificant. This is of great importance for the reliability of the device, since occasional loosening of the tension of the sliver does not cause the lever to turn and arbitrarily break. At the same time, if the hook is broken or stops coming out of the exhaust device, arm 1 will first turn slowly, and then as the angle increases and, accordingly, the absolute difference in the moments of rotation of the lever and the counterweight increases, its rotation will increase. Without resistance, the shoulder 1 is lowered onto the upper end of the spindle 9, while falling into the container of the diluted thread 4. As a result of the intersection of the balloon of the thread 4 by the shoulder 1, it will immediately tear off.

When a breakage is eliminated, shoulder 1 is turned in the opposite direction, while simultaneously moving it along — the supports of the holder up to the stop of the counterweight 8 in the right support of the holder. In this case, the lever extends beyond the pivot point created by the screw 9 (shown by dotted lines) and turns right up to the stop against the tide of the holder 6, so as not to interfere with the tapering of the thread during the breakage elimination. After folding the thread and restoring the sliver, the lever is turned all the way with a sliver 8, while the counterweight 8 under the force of gravity is lowered to the left support of the holder, and the lever comes into contact with the screw 10, which prevents it from tilting away from the sliver under the influence of vibrations.

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Claims (2)

1. A device for breaking the thread of the descent (with the spindle of the spinning machine with the spindle, containing a lever located between the spindle with the exhaust device, one arm of which serves to rely on the sliver emerging from the exhaust device and a sliver is broken, and another for mounting a lever in the holder can be rotated around an axis intersecting the movement path of the sliver from the exhaust device to the spindle, and a lever position lock, characterized in that, in order to increase the reliability of operation, the lever has a counterweight positioned on his shoulder serving to set the lever 1320276 in the holder, and equal in weight to the support arm of the lever, the distance from the center of gravity of the counterweight to the axis of rotation of the lever is less than the center of the body of the supporting arm of the lever to this axis, and the other arm of the lever is placed in the holder with the possibility of axial movement. 2. The fixture according to claim 1, about t - l-looking so that the axis of rotation of the lever is perpendicular to the trajectory of movement of the sliver from the exhaust device to the spindle. 3 A device according to Claim 1, characterized in that the lever position latch is made in the form of a screw mounted in a holder. Yu Editor M.Kelemes Compiled by G. Kvashenko Tehred I. Popovich Order 2617/25 Circulation 427 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 fi8.2 Proofreader L. Patay