JPS5927057Y2 - Tension control device for capacitor element winding machine - Google Patents

Description

[Detailed explanation of the invention] Capacitor paper winding machines produce capacitor elements by layering materials such as metal foil and paper in multiple layers and winding them around a core, but unless the tension of each material is adjusted appropriately, It will fail to wind up, and even if it does wind up, the electrical characteristics will be poor and the product will be defective.

Therefore, a dancer roll is installed in the middle of sending the material from the material roll to the paper winding machine, the material is applied to this dancer roll, and the tension of the material when it is wound by the paper winding machine is converted into the amount of displacement of the dancer roll. Then, this amount of displacement is converted into, for example, an electric signal and an appropriate control force is transmitted to the brake device engaged with the corresponding material roll shaft, so that the material is supplied with a constant tension of each material. There is.

In the tension adjustment device using dancer rolls as described above, it is possible to accurately detect changes in the diameter of the material roll, and also to accurately detect changes in the tension of the material being applied in response to the winding state of the paper winding machine. By feeding back this information, accurate tension adjustment is possible, but on the one hand, it has the disadvantage that it cannot respond to rapid changes, and when changing material rolls during winding work, it is necessary to pass the material through this dancer roll each time. In addition, the provision of dancer rolls complicates the design and increases the spatial extent accordingly.

The present invention improves the above-mentioned drawbacks and provides a novel tension adjustment device that adjusts tension and improves workability using a mechanically simple device, and will be described below based on examples. .

FIG. 1 shows one embodiment of the present invention.

The paper winding machine is not shown but is in the direction of the arrow.

A touch roller 3 is arranged so as to be in contact with the surface of the material roll 2 on the upper left side surface of the material roll shaft 1, and the touch roller 3 is fixed to the rotating shaft 5 by an arm 4.

When the material of the material roll 2 is sent to the paper winding machine in the direction of the arrow, its diameter is reduced, and accordingly the arm 4 also double rotates in the direction of the arrow, and the touch roller always maintains contact with the surface of the roll 2. .

An electric converter, such as a potentiometer 6, for converting the rotation angle of the arm 4 into an electrical quantity is provided facing the rotation shaft 5 and fixed to, for example, a frame 7 supporting the roll shaft 5, and detects the rotation angle and converts the rotation angle into an electrical quantity. The signal output from the electrical converter 6 enters a signal comparator C having a reference value setting device S, and an amplifier A.
A control circuit is constructed by inputting the signal to an electromagnetic braking force generating device 9 of a brake 8 which is mechanically coupled to the roll shaft 1 via the control circuit.

As an electromagnetic braking force generating device, a powder type brake combined with a disc is most suitable.

The ability of the apparatus of this embodiment to keep the tension of the material constant will be explained with reference to FIG. 2.

In Fig. 2, if T is the tension, r is the material radius, and To is the brake torque, in order to wind the material at the radius r with the tension T, ignoring the winding acceleration and the inertia of the material. , T=10 holds true.

Therefore, if the constant tension T is a constant, the brake torque is expressed as To-Tr. Therefore, the displacement amount of r is measured with the touch roller 3, and the brake torque is calculated based on the displacement amount. If you change it, you can get a constant tension.

In this device, the tension is controlled as T-chi.
In reality, the tension during winding is not constant due to differences in material size, changes in winding speed, etc., but since tension fluctuations can be predicted in advance, they do not impair the electrical characteristics of the wound element. Therefore, the purpose of controlling the tension of the condenser element winding machine can be sufficiently achieved.

As described above, according to the present invention, a container paper winding device having a simple structure and good workability can be obtained.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the present invention, and Fig. 2 is an explanatory diagram of tension control of the present invention, where 1: roll axis, 2: roll, 3
: touch roller, 4: arm, 5: rotating shaft, 6: electrical signal converter, 7: frame, 8 brake, 9: electromagnetic braking force generator.

Claims (1)

[Scope of utility model registration request] An electric converter converts the rotation angle of a rotating shaft having a touch roller that constantly contacts the material roll into an electrical quantity, and the signal from the converter is manually transmitted to an electromagnetic braking force generator via a signal comparator and an amplifier. Tension control device for capacitor element winding machine.