SU440454A1 - The device for the preparation of staples of fibers with a smooth edge. - Google Patents

Description

one

This invention relates to the textile industry and can be used in fiber quality control.

The known devices for determining the length of the fiber contain a device for sorting fibers into groups of lengths with equal-edge staples, consisting of a carriage being moved in a horizontal plane, carrying a removable clip for staples, moving along the carriage and periodically feeding the ends of the fibers to a staple in a fixed clip.

The purpose of the invention is to obtain a diagram of fiber length distribution.

This is achieved by the fact that the proposed device is provided with a light source, an optical slot located in the plane, facing to the plane of the viewed fiber group, a light receiver and a fiber number recorder in each group.

FIG. 1 shows an instrument for determining fiber length; in fig. 2 is a section along A-A in FIG. one.

The proposed device consists of a carriage 1, mounted on a spring-loaded slider 2, moved along guide 3, shaft 4 with cam 5.

The carriage 1 has the shape of an open-top box with a smoothly polished bottom, on which a removable clip 6 with a staple is installed. The upper jaw 7 of the clamp b is pressed by the handle 8. The shaft 4 is driven from the electric motor (not shown) through a worm gear 9, gear 10 and a worm to And, kinematically connected with gear 12.

To the right of the carriage 1, periodically rotating clamping rollers 13 with an elastic coating 14 are installed, a corrugated spring-loaded drum 15 with a nap covering interacting with the roller 13, which is pressed against the roller 14 by springs 16 with a force exceeding the pressing force of the upper jaw

7 removable clip 6.

A pinion gear 17 is mounted on the roller shaft 14, interacting with the gear gear 18, mounted on the same axis as the worm gear 12, which has an incomplete toothed rim and is integrally formed with the face eccentric 19. During rotation, the gear 18 intermittently interlocks with gear 17, the face eccentric 19 pushes a spring-loaded brake lever 20 from gear 17, which is loosely mounted on axis 21.

As a result, the rollers 13 and 14 receive a periodic rotation. In front of the rollers 13 and 14 there is a table 22 with a transverse slit for passing the beam from the source 23 of the light to

photocell 24.

The feed mechanism of the removable clamp 6 to the rollers consists of the lead screw 25 with a step of 0.5 mm, a half-nut 26 fixed on the rod 27, a scale 28 indications of fiber length in staples in groups, pin 29, handle 30, springs 31, modulator 32, an electronic potentiometer with an electronic proportional controller 33, a block 34, a counting part of a photoelectric device, and an electromagnetic counter 35.

From cam shaft 4, gear 10 transmits rotation to screw spindle 25, having a 0.5 mm thread pitch and interacting with a half-nut 26 rigidly connected with a spring-loaded horizontal rod 27. When moving to the extreme right position, the rod opens contact 29, Turn off power to the photoelectric device.

The rod 27 is set to the initial position by the handle 30, at the turn of which the screw 26 is taken out of engagement with the semi-nut 26 and under the action of the spring 32 the rod 27 moves to the initial position. At the approach of the carriage 1 to the extreme left position, the rod 27 in the working position acts on the removable clamp b, moving the latter together with the staple by 0.5 mm towards the rollers 13 and 14, and the ends of the fibers of the staple protrude from the carriage body in the form of a barb. Thus, by feeding the detachable clamp 6 for each stroke of the carriage 1 by 0.5 mm, the small fiber barb extends from the carriage body.

The length of the fiber on the instrument is determined as follows. In the extreme right position of the carriage 1, the protruding staple approaches the rollers 13 and 14, which, by this time, stop rotating and clamp the beard. When the carriage I leaves to the left, a group of fibers of the same length is selected from the staples and laid out on the table 22.

The beam from the light source 23, the passage through the slit of the table 22 and the groups laid on it

fibers of the same length are fed to the photocell 24, the signal from which, proportional to the number of fibers on the table, is fed through the modulator 32 and the preamplifier to an electronic potentiometer with an electronic proportional regulator 33.

The potentiometer amplifies a signal that is recorded on a chart tape and directs it to a block 34 of the counting part of the photoelectric device. From the counting part, the signal is transmitted to an electromagnetic counter 35, integrating the incoming signals.

By knowing the fiber length that starts

Figure 5 shows the staple with a photoelectric device, and the spacing between fiber groups in length (10.5 mm), and a chart of the distribution of fibers in the staple into length groups is obtained on a recorder.

0 Summation of all signals from photocell 24 allows, by appropriate calibration of counter 35, to determine the percentage of fibers in each group of the total number of fibers in the staple.

Subject invention

A device for determining the length of the fiber containing a device for sorting

0 fibers for length groups of staples with a smooth edge, consisting of a carriage moved horizontally, carrying a removable clip for staples moving along the carriage and periodically transmitting ends

5 staple fibers in a fixed clamp, different from the fact that, in order to obtain a fiber length distribution chart, it is provided with a light source, an optical slit located in a plane perpendicular to the plane of the viewed fiber group, a light receiver and a recorder of the number of fibers in each group. f f /