Yarn take-up device

Abstract

The present invention provides a yarn rolling device. A pulse generating device (29) generates a rotating speed signal which is formed by pulses with numbers that correspond with the rotating speed of a transverse drum (28) every time unit. Information related with rolling conditions such as kind of the transverse drum (28) and the kind of a rolling tube of a package (P) is stored in a rolling condition storage part (63). A signal conversion part (64) generates a movement speed signal which is formed by the pulses with the number which is obtained through multiplying a pulse ratio corresponding with the rolling condition and the number of pulses of the rotating speed signal, and outputs the movement speed signal to a determination part (65). The determination part (65) obtains movement speed of the yarn (Y) according to the movement speed signal, and calculates the length of yarn fault according to the obtained yarn movement speed and detection time by a yarn fault detection part (62) to the yarn fault. Furthermore, in a condition that the calculated yarn fault length is less than a preset length, an action signal is output to a cutting device (14a).

Description

technical field [0001] The present invention relates to a yarn winding device that winds a yarn supplied from a yarn supplying section as a package. Background technique [0002] In the automatic winder described in Japanese Patent Application Laid-Open No. 2011-20838, the yarn supplied from the bobbin is wound into a winding bobbin (core tube) to form a package. A rotation sensor is attached to the take-up drum (drive drum) that traverses the yarn and rotates the take-up bobbin. The rotation sensor outputs a number of rotation pulse signals corresponding to the rotation amount of the take-up drum. The forming pulse signal output from the rotation sensor is counted, and the length of the yarn unwound from the bobbin is calculated based on the counted value. [0003] Here, in the automatic winder described in Japanese Patent Laid-Open No. 2011-20838, a different configuration such as changing the winding drum into a traverse groove shape is considered to wind the yarn. In ...

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Problems solved by technology

[0004] On the other hand, in Japanese Patent Laid-Open No. 2011-20838, it is not described how to calculate the length of the yarn unwound from the bobbin based on the count value of the rotation pulse signal.

Regardless of the type of take-up drum or bobbin, the unwinding length of the yarn can be calculated using the same calculation using the count value of the rotation pulse, but depending on the type of take-up drum or bobbin The relationship between the rotation speed of the winding drum and the moving speed of the yarn is different due to the difference, so there is a concern that the unwinding length of the yarn cannot be accurately calculated

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