SU596840A1 - Device for monitoring ballon thread - Google Patents

Description

This invention relates to the instrumentation technology of light weight and is intended to control a balloon thread. A device containing a base is known. In which a ball is located. Locking limiter, and strain gauges, through a dividing unit connected to the recorder. The sensors of the deformation of the cylinder-limiter are made in the form of piezssducers. and needles with spherical ends. The needles at one end interact with the piezoelectric transducers, and the other with the deformable part fl. The non-stat of the known device is the inability to determine the instantaneous forces of the normal pressure and the friction of the thread against the balloon limiter .. j. The proposed device is devoid of these disadvantages due to the fact that, in order to expand the functionality, the balloon is made in the form of a plate, and the strain gauges are installed on the front and side plates of the plate at the same height relative to the base. FIG. 1 depicts a debited device; in fig. 2 - control block diagram, top view. The device comprises a flat thread separator 1, an elastic round-shaped beam 2 and a cd1rometric screw 3 connected to the base of the device 4, and two piezoelectric sensors 5 and 6 with needles 7 and 8 located at the same height with respect to the vertical axis of the stitcher. Some ends of the needles rest in the perpendicular planes of the thread separator, and others in the piezo sensors. Amplifiers 9 and 10 are connected to piezo sensors, which, in turn, are connected to register 11. Divider 12 serves to extract the instantaneous friction coefficient, the signal from which is fed to a recording device. The device works as follows. The balloon of the thread (not shown in fig.) During rotation of the collision with plane A (see FIG. 2) the restrictor balloon. Due to the impact, the instantaneous force of the normal pressure K arising creates a pulse in the piezoelectric sensor. The impulse goes to the amplifier 9, and from the latter to the measuring device 11. During the collision of the thread with the balloon limiter, the instantaneous friction force i appears:

The OS threads of the limiting cylinder sends a pulse to the piezoelectric sensor 6 through the needle 7, the pulse is fed to the amplifier 10, and from there to the recording device 11. Simultaneously, in block 12 an operation is performed with signals received from amplifiers 9 and 10, according to

. -

mule:

T - instantaneous coefficient where friction.

From the division unit, the signal corresponding to the coefficient of instantaneous friction enters the recording device.

The optimal pop-up b allon-limiting plane relative to: the axis of the spindle is determined with the micrometer screw 3.

The proposed device can be used to study the movement of the filament in the balloon depending on

the parameters of the yarn separator, the thread and the twisting mechanism.

Claims (1)

1. USSR author's certificate 281878, cl. & 01 11. 5/10, 1968. BUT " And I ipui i