SU1379214A1 - Pulling and rewinding device - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in various fields of the mechanical engineering industry, as well as in the electronics industry for drawing and rewinding lengthy materials during flaw detection control. The purpose of the invention is to improve the accuracy of controlling the speed and tension of a lengthy material. The device contains two adjustable electric motors 2 and 3, gearboxes 4 and 5, equipped with self-braking worm gears. Both electric motors work in motor cutting. The controlled material 8 is rewound from one coil 6 to another 7, which are mounted on the output shafts of the gearboxes. When the device operates, the tension is controlled by the electric motor in the direction of which the material 8 moves, and this force is fully perceived by the self-braking worm gear of the second motor gearbox. Repeated inspection of the defect of the reversal of the movement of the material is carried out without changing the rewinding parameters, only by switching the power of the electric motors. 1 il. (L

Description

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The invention relates to mechanical engineering and can be used in various fields of math construction, as well as in the electronics industry for drawing and rewinding lengthy materials (wires, tapes, flatting) under flaw detection control.

1, one of the inventions is to improve the accuracy of speed control and} 1 at long length material.

Fig. 1 is a drawing of the image of a drawing-rewinding device.

The device consists of a plate I, on which are placed two controlled electric motors 2 and 3 with gearboxes 4 II 5, respectively, equipped with self-brake worm gears, and two katugchek 6 and 7, articulated with output shafts of gearboxes 4 and 5, respectively.

The device works as follows.

The controlled material (wire, tape, ivy flat) 8 is rewound from one of the rolls to another. When material 8 is moving, for example, from left to right, tension is controlled by varying the torque of the electric motor 3 with a stabilized material moving speed by stabilizing the frequency of the motor 2, and both electric motors 2 and 3 operate in the motor mode.

When material 8 moves in the opposite direction, the tension is controlled with the electric motor 2 at a stabilized frequency of rotation of the electric motor.

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3. Thus, during operation of the device, the tension increase is controlled by the electric motor towards which the material moves and this force is completely perceived by the self-braking worm gear of the second motor reducer, the torque on the shaft of the second electric motor providing the speed of movement when changing the tension force of the material is equal to the moment of friction force in the gearbox.

To reverse the movement of the material without changing the parameters of pulling (rewinding), it is sufficient to change the polarity of the source of the electric motors.

To reduce the time required to fill the coils with a controlled material or to replace their self-braking transmissions, window couplings can be provided.

The technical and economic effect of the proposed device in comparison with the known one is to improve the accuracy of controlling the speed and tension of materials.

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Claims (1)

30 claims A rewinding device containing two controllable electric motors, one of which has a gearbox, and two katuiki, feeding and receiving, characterized in that, in order to improve the accuracy of controlling the speed and tension of a long material, the second controllable electric motor is equipped with a gearbox, and both gearboxes contain self-braking worm gears.