JPS6259029B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winding frame end detection method for an alignment winding device.

For example, the material to be wound 2 (first
When aligning and overlapping the winding frame 1 (FIG. 1) with the winding frame 1 (FIG. 1), it is necessary to perform traverse while winding. When the winding frame is wound to the end, it is necessary to reverse the traverse direction and overlap it as shown by the arrow in FIG. For this reason, it is necessary to detect by some means that the turn of the material to be wound has reached the end of the reel frame.
It is necessary to send the signal to the traverse device to instruct it.

Conventionally, such detection methods include installing an end point detector that detects the end point of the traverse guide using an optical method, or, if this is not possible due to mechanical reasons, detecting the amount of change in the winding thickness of the winding drum using a waveform. Methods such as analysis and detection have been adopted.
However, all of these methods require complicated equipment, and in particular, the method of differentiating and detecting the waveform of the amount of change in winding thickness has the disadvantage that malfunctions due to ripples are likely to occur and reliability is low.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate such drawbacks and to provide a highly reliable method of detecting the end of the winding frame using a simple device.

FIG. 2 is a block connection diagram showing the configuration of the present invention, and FIG. 3 is a signal waveform diagram at various points in FIG.

In Fig. 2, reference numeral 11 indicates a winding diameter that is conventionally provided to detect the winding diameter of the winding drum, although constant tension control is generally performed in the alignment winding device. This is a detection device, and this is utilized in the present invention. 12 is a first-order delay element, and 13 is a comparator. That is, the detection signal a of the winding diameter from the winding diameter detection device 11 is input to the primary lag element 12, and the difference signal c between the output signal b of the primary lag element and the winding diameter signal a is sent to the comparator 13. By supplying the output signal d inputted and shaped into a pulse signal to the traverse device as the winding frame end detection signal d, it is detected that the turn of the material to be wound 2 has reached the winding frame end. FIG. 3A is a waveform diagram of the output signal a of the winding diameter detection device 11, FIG. 3B is a waveform diagram of the output signal b of the first-order delay element 12, and FIG. 2 is a waveform diagram of the output signal d of the comparator 13. FIG.

That is, the output signal a of the winding diameter detection device 11 is
When the turn of the material 2 to be wound reaches the end of the winding frame, only one layer is overlapped, so that the diameter of the winding gradually increases as shown in the figure. When this signal a is passed through the first-order delay element 12, the stepwise rising angle of the signal a disappears, and the signal b becomes as shown in FIG.
Here, when the signal a-signal b is calculated, the signal c is obtained, and when it is shaped by the comparator 13, the signal d is obtained. This signal d makes it possible to detect that the turn of the material to be wound 2 has reached the end of the winding frame, and the traverse direction can be changed to the opposite direction based on this signal. Therefore, it is possible to detect the end of the winding frame with high accuracy using a simple device without performing waveform differentiation operations.

In the above embodiment, the difference signal was obtained by subtracting the signal b from the signal a, but the difference signal may also be obtained by subtracting the signal a from the signal b, and the comparator 13 is used only when waveform shaping is necessary. It is easily understood that generally the comparator 13 may not be used and the signal c may be used as the winding frame end detection signal.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing how to wind the material to be wound around the reel frame, Fig. 2 is a block connection diagram showing the configuration of the present invention, and Fig. 3 is a signal waveform diagram at various points in Fig. 2. . a... Winder diameter signal, 12... First-order delay element, b
. . . Output signal of the first-order delay element, c . . . Difference signal between a and c, 2 . . . Material to be wound.

Claims (1)

[Claims] 1 Input the winding diameter signal of the winding drum to the primary lag element, and detect that the turn of the material to be wound has reached the winding end based on the difference signal between the output signal of the primary lag element and the above winding diameter signal. A method for detecting a winding frame end of an alignment winding device, characterized in that: