SU962168A1

SU962168A1 - Web tension control

Info

Publication number: SU962168A1
Application number: SU802918969A
Authority: SU
Inventors: Михаил Христофорович Лейбович; Евгений Григорьевич Энтин; Мила Марковна Таран
Priority date: 1980-05-05
Filing date: 1980-05-05
Publication date: 1982-09-30

Description

Изобретение относитс к регул торам нат жени , в частности к регул торам нат жени рулонных материалов при их перемотке. The invention relates to tension regulators, in particular to tension regulators of roll materials when they are rewound.

Известно устройство дл регулировани нат жени рулонных материалов , содержащий импульсные датчики частоты вращени рулона и направл ющего вала, подключенные к входу измерител радиуса рулона, и привод рулона fllНедостатком известного устройства вл етс наличие скачка нат жени при пуске, так как в начале намотки выходной сйгнсш измерител радиуса равен нулю.A device for regulating the tension of roll materials, containing pulse sensors for the rotation of the roll and the guide shaft connected to the input of the roll radius meter, and the roll drive fll are known. radius is zero.

(Цель изобретени - обеспечение стабилизации нат жени материала в пубковом режиме.(The purpose of the invention is to provide stabilization of the material tension in the pubic mode.

Поставленна цель достигаетс тем, что регул тор, содержащий импульсные датчики частоты вращени рулона и направл кидего вала, подключеные к входу измерител радиуса рулона, и привод рулона, снабжен элементом ИЛи и последовательно включенными пороговым элементом и делителем напр жени , при этом выход измерител радиуса рулона св зан с входом порогового элементаThe goal is achieved by the fact that the regulator, containing pulse sensors for the roll rotation frequency and shaft direction, connected to the input of the roll radius meter, and the roll drive, is equipped with an ILi element and a series-connected threshold element and voltage divider connected to the input of the threshold element

и с первым входом элемента ИЛИ, второй вход которого подключен к выходу делител напр жени , а.выход св зан с приводом рулона.and the first input of the OR element, the second input of which is connected to the output of the voltage divider, and the output connected to the roll drive.

На чертеже представлена блок-схема регул тора.The drawing shows a block diagram of the controller.

Регул тор содержит импульсный датчик 1 частоты вращени рулона и импульсный датчик 2 частоты вращени The controller contains a pulse sensor 1 frequency of rotation of the roll and a pulse sensor 2 frequency of rotation

10 направл ющего вала, подключенные к измерителю 3 радиуса рулона. Выход измерител 3 соединен с входом порогового элемента 4 и с первым входом элемента ИЛИ 5. Выход элемента 4 10 of the guide shaft connected to the meter 3 roll radius. The output of the meter 3 is connected to the input of the threshold element 4 and to the first input of the element OR 5. The output of the element 4

15 через делитель 6 напр жени подключен к второму входу элемента ИЛИ 5, выход которого через усилитель 7 . соединен с приводом 8 рулона.15 through the voltage divider 6 is connected to the second input of the element OR 5, the output of which is through the amplifier 7. 8 is connected to the drive roll.

Регул тор работает следующим об20 разом.The controller works as follows.

Claims

In the start-up mode, when there is no rotation of the roll and shafts, there are no output pulses at the output of sensors 1 and 2, and meter 3 has a left output signal. At the same time, at the output of the threshold element 4 there is an output level signal stabilized, a part of which from the divider 6 voltage through the element OR 5 is supplied to the input of the amplifier 7. The level of the signal removed from the voltage divider 6 is determined by the braking torque or in shcheni. The magnitude of the initial moment depends on the initial radius of the roll or roll coil and the required amount of tension. Thus, during the first roll turn in the start mode Hd of the first input of the element OR 5, the input signal is equal to zero, and on the second turn it is different from zero, its level is set before the start of the mechanism. After making at least one turn of the rotating roll at the output of the meter 3, an output signal appears corresponding to the measured roll radius. The threshold element 4 changes its state, the output signal is zero. Thus, at the first input of the element OR 5 after the first roll turn, the value of the input signal corresponds to the measured radius of the roll, and at the second input of the element. OR 5 signal is zero. With further roll rotation and web rewinding, the state of element 4 does not change. The presetting of the threshold element 4 and the voltage divider 6 provides an automatic, without voltage jumps, start-up and a switch to the program stabilization mode of the tension of the rewindable web material. The economic effect of using the proposed regulator is determined by the high accuracy of tension stabilization in start-up modes. Claims The tension regulator for roll materials, containing pulse sensors for rotational speed of the roll and guide shaft, connected to the input of the roll radius meter, and the roll drive, characterized in that, in order to stabilize the tension of the material in the starting mode, it has OR and a series-connected threshold element and voltage divider, wherein the output of the roll radius meter is connected to the input of the threshold element and to the first input of the OR element, the second input of which is connected to the output voltage divider, and an output coupled to the coil drive. Sources of information taken into account in the examination 1. UK patent number 1233057, cl. H 2 J, 1972.