SU1406231A1 - Device for trimming the thread in doffing of package from textile machine spindle - Google Patents

Abstract

The invention relates to the textile industry, to a device for cutting the thread when removing the package from the spindle of a textile machine, and allows to increase the reliability of cutting the thread and simplify the design. A square-shaped blade knife is mounted on a spindle in the upper part of the sleeve to locate the take-up. The sleeve is fixed on the spindle above its drive block. The length of each side of the knife exceeds the diameter of the sleeve. When the package is removed, the thread connecting thread with it is pressed against the cutting edge of the knife on one of its sides and, as you move along the edge along this side of the knife, the tension of the thread increases, as a result of which the thread is cut to the other side of the knife and creased. - no turns of the sleeves from the sleeve. 4 il. (L

Description

to

& 0

The invention relates to the textile industry and can be used on spinning and twisting machines for cutting threads when removing packages from spindles by means of devices for removing packages.

The aim of the invention is to increase the reliability of thread trimming and simplify the design.

Fig. 1 shows a spindle with a device in a longitudinal section in Fig. 2 - section A-A in Fig. 1; on fig.Z and 4 - section b-b on figure 2, options for installing a knife.

The fixture contains a square-shaped blade knife 1 mounted with a tension in the upper part of the sleeve 2 for locating the reel 3 connected to the body of the package 4 with a piece of thread 5. The knife can be mounted on the spindle 6 in the upper part of the sleeve 2 and rests on the end sleeve 2 (figure 4). The diagonal distance of the knife is less than the diameter of the ring 7 of the spinning machine, and the length of each side of the knife is greater than the diameter of the sleeve.

2, designed to form a tack.

The bottom plane of the square hole and the ends of its 8 sides are copied I to obtain a cutting edge 9 along the outer perimeter located horizontally. The corners of the knife are cut to avoid their interaction with the 1Q slider. As the spindle rotates, the sleeve and i rotate with it. i The fixture operates as follows x).

After the package has been in operation, the ring bar 11 of the machine is lowered to the lower position, as a result of which a reel is formed on the upper part of the sleeve 2.

3, associated with the body of the package; The thread that crosses the knife edge at any point on one of its sides. When you move the package up the spindle, in the process of unpacking the spindle, the tension increases in opposite directions along the thread from the contact zone with the cutting edge of the knife to package and coil windings. Under the action of the resultant of these efforts, the thread moves along the cutting edge of the knife. Since the movement of the thread is accompanied by the stretching of these sections of the thread, the resistance to displacement of the thread

on the edge of the knife increases and so

-

Q

five

0 5

Q

0

45 pr

five

This eliminates the possibility of free movement of the yarn along the edge of the knife and the need to use guard discs with slits. Moving the thread along the edge of the knife with increasing resistance to this movement causes its reliable cutting.

The use of a square-shaped knife increases the possibility of relative movement of the thread along its cutting edge, which is necessary for cutting the thread, while at the same time eliminating the transition of the thread during the removal of the package to the adjacent edge on the other side of the square knife and winding it from the spindle sleeve at the time of removal due to the fact that the length of the side of the knife is greater than the diameter of the sleeve, and the thread is constantly under tension during removal of the package, this end of the cut thread remaining on the sleeve is short and does not get stuck The main thread is drawn on the next machine start. Reliability thread trimming increases.

Eliminates the need for application-. NIN of the thread-guiding .disc disk and the glass with the rough outer 10 surface that serves to fasten the winding coils in order to avoid their displacement on the external surface of the glass when removing the package in the spindle, which can lead to tension on the thread under-runner-clamp of the exhausting pair of textile machine and its break. When there are a sufficient number of coil turns (for example, 3-4) on the sleeve, their displacement along its outer surface does not occur, since the tension of the thread when removing the package sufficient to cut the thread with a square-shaped knife is insignificant; therefore, the thread yarn on the section of the runner - clamping the exhaust fumes of a textile machine is excluded.

Claims (1)

Invention Formula A device for cutting the thread when removing the package from the spindle of a textile machine, containing a blade knife with a cutting edge located on its perimeter, mounted on the spindle of the machine in the upper part of the sleeve for positioning the winding mounted on the spindle of the machine above its drive block, distinguishing 1406231 so that, in order to increase the size, while the length of each side of the reliability of thread trimming and simplifying the knife exceeds the diameter of the sleeve for the structure, the knife is made in a square arrangement of the reel. J. THEIR eight FIG. 2 B C - Fig.Z 5 B Phi.