SU516653A1 - Device for controlling linear glass fiber prostheses - Google Patents

Description

(54) DEVICE FOR THE CONTROL OF LINEAR DENSITY OF GLASS

The block diagram contains a glass reel 1 with a glass fiber 2, an anti-balloon ring 3, a tensioning unit 4, an electromechanical converter 5, a reinforcement unit 6, a tension setting unit 7, a fixed thread conductor 8, a tension frequency converter 9, a frequency converter 10 of natural oscillations of the fiberglass , yarn handler 11, lever 12, kupachok 13, gearbox 14, drive engine 15, receiving drum 16, engine control unit 17, braking unit 18, permanent magnet 19, drum speed sensor 20, power-forming unit 21, electric Throne key 22, unit 23 specifying the length of the block 24 accounts length fixing unit 25 dispersal block 26 for calculating the linear density and the display unit 27.

The system consisting of an electromechanical converter 5 with a block 4, a gain block 6, a tension setting block 7 and a tension frequency converter 9, is used to automatically stabilize the tension of the glass yarn 2, unwind from the reel 1 through the anti-balancing ring 3.

Block 4 is designed to create tension of winding glass yarn 2 with the help of two thread guides (see figure 2). One of the thread guides is made in the form of a solid substrate 28, and the second thread guide, connected to the core of the electromechanical transducer 5, is formed in the form of a solid substrate 28 with an elastic gasket 29 of their microporous rubber. 2 surfaces of both thread guides, which are in contact with glass fiber, are covered with soft natural leather gasket 30. The use of natural leather allowed the niteconductors to contact with the glass fiber 2, moving at high speed, without breaking it.

The electromechanical transducer 5 serves to create the movement of one of the thread guides in block 4, thereby changing the clamping force between the flat thread guides and thus adjusting its tension. The converter 5 can be used, for example, a DC electromagnet.

A gain unit 6, consisting of a frequency to voltage converter, a preamplifier and a power amplifier, serves to control an electromechanical converter 5.

The tension setting unit 7 is designed to set the required tension of glass yarn. It consists of a comparison device and a setting resistor.

Fixed thread guide 8 changes the direction of winding glass fiber 2.

Frequency converter 9 and the voltage are used to change the current value of the tension of glass yarn 2. A system of three non-rotating with thread conductors is used for measuring. the middle of the noty with the help of a lever is connected with a string of a string transformer PS.

A system for automatically stabilizing the tension of winding off 1 glass fiber thread 2 operates as follows.

When thread 2 moves, frequency converter 9 measures the current tension value and sends a signal to block 6 of the gain:. This signal has occurred: IE.etzg: with the signal given by 7, and the idea .; ::; 1 is located and arrives at the input of the elact.: Oi; -1 ich converter 5. dizmesness ct-shy aagi yarn 2 between; -i ::; rsnpO: -; o; r wKa: vm block 4 about ;; -: aesthesl ets51 by 5 p. sche.l,: 1-ritsat8LY - :: o1 bgltnoy communication by: THoiiie i: ao k), p: e1-l-soBan1, Bystro.lz ;;: c l not ::;. tz: .ch Stoiipazacia tension 0.::p9,i6a iQTCH E OCl UZPoLL constant voltage; Electramahkchelkj prepapovatel 3 l prg isobhod, to:; ost ee can be improved: th ways, from-sys-tm.g / / and from the theory of automatic about gigjxr; an i ;.

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Balaban 18 Lrednazglkhlel dl L uncovered Stellonnitk 2; at a given length of which the intensity is due to the density. For convenience, the soo: -lmlaeani length of the winded-up steellacty 2 circumferential length along the perimeter of barsbekd 16 is, for example, 1 m. WITH AIMED to reduce me ;, inertia of the drum 16 ;; ze-AOWL; 1 hollow of material c:. a lot of l-otlostyu, naprik; p from GL1; l1kki.

Move-atel .; 15; "The burner is turned off with the full power of the block 17j otruzhit for drive 3 lvlslenie reduktora 14 to the drum 16, DLG this MESBNO DIRECT,

for example, an engine of type LOL-012/4.

The braking unit 18, consisting of an electromagnet and brake brake, is used to brake the drum 16. When the unit 18 is turned on with an electromagnet, the brake pad presses against the drum 16, decelerating its rotation. An MIS-12OO electromagnet can be used as an electromagnet. The permanent magnet 19 and the sensor 20, which is standing out of a coil mounted on an open magnetic pipe, are used to fix the revolutions of the rotary drum 16. As the drum 16 rotates, the magnet 19 closes the magnetic conductor of the sensor 20 and leads to emf. in its winding, the amplifier block 21, consisting of a preamplifier, three Schmitt heras and an emitter follower, amplifies the signals arriving from the sensor 20 and generates positive pulses following the frequency of rotation of the drum 1 Electronic key 22 starts counting pulses at the beginning winding the monitored section of glass yarn 2 and off after unwinding a given length. Controls key 22, block 24. When calibrating the device by turning on the toggle switch T, the control circuit of key 22 opens to unwind the specified length of glass strand 2 to a full stop; drum 16. Block 23 is designed to specify the lengths of unwound glass fiber; 2. It consists of a switch with 10 positions for setting. Block: 3 zl9, ktt diaches:;: l is associated with bl: 2 scores; -. , iii:,. O.g :: l block, consisting of an electronic detector, a decoder, as well as coincidence and control circuits, serves for reference ;; the indication of the length of unwound glass fiber specified in block 23 When co-owned from: - yutan length of glass fiber 2 with a length specified by block 2.3, with lomo head of electronic devices of block 24 include Cririxii 7 and 18, and linear calculation of block 26. In As an electronic counter of block 24, it is possible to use, for example, recalculated decades of type IZ-12. Block 25 captures the acceleration of the drum 16 i. the moment when the speed of otmayuany glass yarn 2 becomes constant, after which it turns on the unit 24 of the counting length and block 26 of the measurement. As block 25, a counting decade of type IZ-12 can be used. Block 26 is designed to calculate the average linear density of glass fiber 2 at a predetermined length. When calculating the linear density of block 26, the linear velocity of winding glass fiber 2, for example, 5 or 10 m / s, is considered constant. Block 26 may be, for example, an specialized computing device or computer. The block 27 serves to indicate the result of the calculation by the block 26 of the linear tightness of the glass thread k, and to give the result to the digital printing. A device for controlling the linear density of the fiberglass operates as follows. The glass fiber 2 from the reel 1 is successively passed through the ring 3, the thread conductors 4 and 8, the converters 9 and 10, the spreader 11 n are mounted on the drum 16. Using blocks 7 and 23, they respectively determine the required tension of the glass yarn and the number of meters to be measured. glass fiber linear density. When the zatatel 15 is turned on, the glass-fiber 2 begins to be wound on the drum 16. The engine 15 by means of the gearbox 14, the cam 13 and the lever 12 drives the nitrask, -1a.Tschik 11, which lays the glass-2 on the oasbane 16. Odnazpe: en; - : unwinding {unwinding glassglass 2 - automatic tension-stabilization system is working (blocks 4, 5. 6; 7; 8 ;, lo.tressing tension B zatsann ::: within, At; ea1; np:;: Berabac 16 and,; pulses of sensor 20; amplified :: -; bloo:.: 21, through an electronic key 2: 2, go to block 25, fixed;, ui, :::; h. ::: o: which is mouth at the speed of the rotary drum 16, after which block 25 issued a signal that swung the bills into block 24 and the beginning of block brighter into block 26. Block 24 began counting the number of meters of winding thread, and block 26 linear density st9l;: enct1-g, pospe ggl; et:, .. a stack of ponti 2 blocks 2 blocks 24 sends a signal to the end of the winding to blocks 17, 18, which turn off the engine 15 and brake the drum 16. The signal of the block 24 is electronic the key 22 is locked and from the moment of the start of the deceleration, the pulses in the block 24 will not arrive. At the same time, block 24 sends a signal to the end of the calculation to block 26. It outputs the calculated value of linear density to block 27, which displays the result and sends it to the digital print. After the expiration, HanpHNjep 5 m / s, the readings of the blocks 24, 25 and 26 are automatically reset, as well as the deceleration of the braking unit 18. Thus, all units of the device are returned to their original position and they are ready for the next measurement. When calibrating the device, which consists in comparing the results of calculation by block 26 with the results obtained by weighing the same glass yarn on scales, it is necessary to know the length of all glass yarn wound on the drum 16. Therefore, when calibrating the device, the toggle switch T opens and the electronic key 22 will not be locked therefore, the block 24 will receive the impulses of the sensor 20 after unwinding a predetermined number of glass fiber yarns until the drum 16 stops completely. To find the length of the entire glass yarn wound on the drum 16, it is necessary to sum up the numbers counted by blocks 24 and 25,

Claims (4)

1. Linear control device glass fiber density, containing tension frequency converters and natural oscillations of fiberglass installed in front of the take-up drum, engine control, deceleration, linear density calculation and indication units, characterized in that, to automate the control process and improve accuracy, the device is equipped with a length counting unit connected with a task block, a drum speed sensor connected via an amplifier block and electronic key with an acceleration fixation block whose outputs are connected with a linear density calculation unit and, through a length counting unit, with braking and motor control units. 2. The device according to claim 1, characterized in that it is provided with a system for automatically stabilizing the tension of glass yarn, comprising a series-connected tensioning unit, an electromechanical converter and a gain unit, the input of which is connected to the output of the frequency converter, tension. 3. The device according to claim 2, characterized in that the tension generating unit consists of two solid substrates, one of which is provided with an elastic gasket, the surfaces of the substrate and the elastic gasket contacting the glass fiber are covered with a soft material, such as leather. 4. The device according to claim 1, characterized by the fact that it is equipped with a toggle switch through which the length counting unit and the electronic key are connected. You) (one on digital print ig.1 b Fig- 2