SU1255853A1 - Device for measuring length of loop on warp-knitting machine - Google Patents

Abstract

The invention relates to a measurement technique, namely, devices for measuring the length of a loop on a hall machine. The aim of the invention is to improve the measurement accuracy by eliminating the slippage and deformation of the warp threads when determining the length of the loop. The device is equipped with a removable mark 3 with a magnetic plate, sensors 4 and 5 of the ki position, a limiting stop 8 and a tag return unit made in the form of a driving belt 9 with a permanent magnet 13 fixed to it. mark 3 passes by sensors 4 and 5, the signals from which, as well as signals from sensor 1 of the rotation speed of the main shaft of the machine during the passage of the distance mark L, are transmitted to the computing unit 6. When the magnet 13 passes over the mark 3, it attracts it and moves in reverse m direction until abutment 7. removable label 3 is made of lightweight corrugated material and is seated firmly at falling on the filament 2 bases ,, not deforming them and moving the camping without sliding. 2 Il. (L I ate JV 00 JV from% y. /

Description

one

The invention lends itself to measurement technology and specifically to loop measurement devices in hall machines.

The aim of the invention is to improve the measurement accuracy by eliminating the slippage and deformation of the threads, the basis for determining the loop length.

FIG. 1 shows a diagram of the device; Fig. 2 shows the arrangement of a removable tag on the warp threads.

A device for measuring the length of the loop on the base of the die machine contains a sensor 1 for the rotation speed of the main shaft of the machine, a mechanism for determining the flow rate of the threads 2 of the warp, consisting of a removable tag 3, a nepeMeniae movable movement 2, and sensors 4 and 5 3, and a computing unit 6 associated with sensors, 4 and 5.

In front of the sensor 5 there is an emphasis 7 for removing the mark 3, and behind the sensor 5 there is a limiting emphasis 8.

The device also contains a node for returning the tag 3, made in the form of an endless belt 9 placed above the threads 2, put on the pulleys 10 and P. The pulley 11 has a drive 12. A permanent magnet 13 is fixed on the belt 9.

The label 3 is made of a light non-magnetic material with a high coefficient of friction, for example, foam, its surface 14 is made of corrugated for better fixation of the label 3 on the threads x 2 of the base, and the magnetic plate 16 is fixed on the opposite surface 15.

The gap between the magnetic plate 16 on the label 3 and the surface of the magnet 13 is equal to no more than 3 mm.

The device works in the following way.

When the warp threads 2 move, on which the mark 3 lies, the latter passes alternately past the sensors 4 and 5, which send signals to the computing unit 6 that the track 3 passes a predetermined distance L, and from the sensor 1 to the computing unit 6 a signal about the number of turns the main shaft of the machine during the passage of mark 3 of a given distance L, and the computing unit 6 determines the length of the loop.

558532

The lower branch of the endless belt 9 with the permanent magnet 13 fixed to it is mixed against the threads of the base 2, and after passing through

5, mark 3 of sensor 5, it encounters a permanent magnet 13. With the passage of the magnet 13 over the mark 3, it attracts the mark, removes it from the warp 2 of the warp and moves it in the opposite direction. If mark 2 is not attracted by a magnet 13, then it will stop at restrictive abutment 8 and will be attracted during the subsequent passage of the constant magnet 13.

15 As the magnet 13 with the mark 3 approaches the stop 7, the mark 3 stop 7 is removed from the magnet 13 and falls on the warp threads 2.

Since label 3 is made of 20 lightweight materials with a high coefficient of friction, and its surface 14 is made corrugated, when dropped, label 3 sits tightly on the thread 2 of the base, does not deform them, and moves for 25 seconds without them.

A permanent magnet 13 mounted on the belt 9 can be moved continuously or periodically when the corresponding signals are supplied from the computing unit 6.

Claims (1)

Invention Formula five 0 five 0 55 A device for measuring the length of a loop on a warping machine, comprising a mechanism for determining the flow rate of the warp threads, a sensor for the rotation speed of the main shaft of the machine and a computing unit, characterized in that, in order to improve the measurement accuracy, it is provided with a removable label with a magnetic plate attached to it a stop and a tag return unit mounted above the moving warp threads and made in the form of a closed driving belt with a permanent magnet fixed to it, interacting with the mark, and an emphasis for removing the label from the permanent magnet, the mechanism for determining the consumption of the warp threads is made in the form of sensors with a computational unit of a given initial and end positions of the tag moved by the moving warp threads of the warp, the limit stop is located behind the sensor for the end position of the tag the magnet is located312558534 non-magnetic material in front of the sensor of the initial non-magnetic non-magnetic material, and the mark is made of friction coefficient. light non-magnetic matter friction coefficient. Editor B, Ivanova Compiled by, Syrovatsky Tehred L. Serdyukova Proofreader V. Sinitska Order 4809/40 Circulation 670 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Design,. FIG. 2