SU110544A1 - Single Strand Exhaust Extraction Device - Google Patents

Description

A single-strand high-draw exhaust device is known with a long or short lower strap and a curved draw field.

The proposed device of the same designation, in comparison with the known, provides a constant force of pressing the sliver to the middle pressure roller, regardless of the thickness of the product being drawn.

For this purpose, the device is provided with a strap guide mounted on a freely swiveling frame, which is also the tensioning support for the roller movement.

According to the second version of the device, the displacement guide is fixed on a pivoting frame equipped with a counterweight, which ensures that the sliver is pressed against the tensioning roller.

According to the third variant of the device, the clamping of the sliver and the tension of the displacement are carried out separately, for which the device uses two located one inside the other and freely mounted on the common axis of the frame, one of which is intended to hold the sliver against the middle pressure roller and the other for tension displacement.

Pa figs. 1 shows a diagram of a high-displacement single-displacement exhaust device; in fig. 2 - diagram of the device according to the second option; in fig. 3 - diagram of the device according to the third option.

The single-mesh exhaust device (Fig. 1) has three exhaust pairs. Cylinders of the first and third lines - corrugated, and the middle line - with knurled. The middle pressure roller 1 is inclined at an angle to the front pressure roller. The largest stretch is between the first and middle stretch pairs. The fibers at the exit of the clip of the middle exhaust pair are controlled in a curved draw field between the surface of the middle roller and the surface of the displacement 2 and experience, as it moves towards the front pair, the pressure decreases. The middle stretch pair drives the slides, which are tensioned by the tension roller 5. Rem. No. 110544

shock goes around the bottom of the arc of the pressure roller / and then covers the strap guide 4, fixed in frame 5, self-aligning on axis 6 and ring 7. The tension roller 3 reports the required tension on the strap 2 and provides the corresponding clip of the passing sliver with a pressure roller and displacement; at the same time, the roller 3 by means of the frame 5 and the guide 4 the displacement creates the necessary pressure on the sliver fibers emerging from the clip of the middle exhausting pair.

The pressure from the tension of the strap is extinguished on axis 6 and does not affect the pressing force of the guide.

The clamping force of the pad is determined by the design parameters of the drawing device and is set depending on the set mode of operation of the device — the amount of fiber drawing, the number of yarn produced, the wiring, etc.

The distance between the clips of the front and middle exhaust pairs, as well as the arc of fiber coverage between the strap and the middle pressure roller, varies depending on the fiber length as the diameter of the pressure middle rollers and wiring changes.

According to the second variant of the device (Fig. 2), the strap guide 4 is fixed in frame 8, which is rotated about axis 10 by means of a balancing cable 9 and, creating the necessary constant pressure on the sliver when the fibers exit the middle exhaust pair, ensures their reliable control.

The tension from the tensioning device of the strap is canceled on the axis 10 and does not affect the pressing force of the guide 4. The slipping force of the sliver is determined by the position of the guide 4, axis 10 and the weight 9 in frame 8, as well as the weight of the weight 9, and is set depending on the set mode of operation of the device.

In the third variant of the device (Fig. 3), a shortened strap 11 was used instead of a long strap, and to eliminate the possible slack of the strap due to its stretching or different lengths, an axis 13 is installed on the axis 13 with a belt tensioner 14 and a weight 15 located on the outside framework 16.

Constant pressure on the sliver and reliable control of the fibers as they exit from the middle exhausting pair is provided by the force of the strap guide 4 against the middle pressure roller, regardless of the tension of the strap.

Subject invention

Claims (3)

1. A single-strand high-draw exhaust device with a long or short lower displacement and a curved exhaust field, characterized in that, in order to provide a constant pressure on the slipper to the middle pressure roller, regardless of the thickness of the extracted product, it is provided with a strap guide, mounted on a freely pivoting frame, which is at the same time the support for the tension of the roller strap. 2. Video change of the device according to claim 1, characterized in that, in order to independently clamp the sliver from the tensioning roller, the strap guide is mounted on a rotating frame equipped with a counterweight. 3. A device change according to claim 1, characterized in that, in order to realize separate clamping of the sliver and tension of the strap, two are placed one inside the other and freely mounted on a common axis of the frame, one of which is intended to clamp the sliver to the middle pressure roller and the other - for tensioning the strap.