Control device of air jet loom
A control device and air-jet loom technology, which is applied in looms, textiles, textiles and papermaking, etc., and can solve problems such as the increase in the initial action characteristics of the jet pressure, the slow initial action waveform, and the individual difference of the main valve.
Active Publication Date: 2021-05-11
TOYOTA IND CORP
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Problems solved by technology
[0006] On the other hand, if the overexcitation voltage is adjusted so that the initial operation waveform becomes slow, there may be cases where the initial operation characteristics of the injection pressure of the main nozzle vary widely due to individual differences in the main valve.
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Embodiment approach 1
[0032] First, refer to figure 1 The configuration of the weft insertion device 100 including the control device for the air jet loom according to Embodiment 1 of the present invention will be described. figure 1 It is a block diagram showing the structure of the weft insertion device 100 of the air-jet loom according to Embodiment 1 of the present invention. In addition, in this specification, with respect to the weft insertion direction in which the weft yarn is inserted into the warp opening and the weft yarn is conveyed, the side opposite to the weft insertion direction is referred to as upstream, and the side in the weft insertion direction is referred to as downstream. In addition, with respect to the flow direction of the compressed air, the source flow side is defined as upstream, and the side opposite to the source flow is defined as downstream.
[0033] [Structure of the weft insertion device 100]
[0034] figure 1 The illustrated weft insertion device 100 includes...
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An electromagnetic valve is driven by an over-excitation voltage, and the injection pressure initial operation characteristics of a nozzle are appropriately adjusted. The present invention is provided with: a control unit (110) that supplies to a solenoid valve (146) an over-excitation voltage that determines an initial operation characteristic of an injection pressure of a nozzle when the injection pressure of the nozzle is initially operated in an open state of the solenoid valve (146), and that supplies to the solenoid valve (146) a holding voltage that holds the open state of the solenoid valve (146) after the initial operation of the injection pressure of the nozzle; and a pressure detector (148) that detects the pressure of the compressed air that has passed through the solenoid valve (146), and the control unit (110) adjusts the over-excitation voltage on the basis of the detection result of the pressure detector (148) so that the initial operating characteristics are in a desired state.
Description
technical field [0001] The invention relates to a control device for an air-jet loom. Background technique [0002] The air-jet loom mechanism is such that the weft yarn in the yarn feeding part is stored in the weft yarn length measuring and storage part, the stored weft yarn is unwound through the main nozzle to start weft insertion, and the weft yarn with the weft inserted is drawn at the weaving width through the sub-nozzle. Inner conveying, ending weft insertion. This air-jet loom injects compressed air from the main nozzle and the sub-nozzle to control the yarn movement of the weft yarn, so proper air injection is important. Therefore, it is necessary to properly drive the main valve that supplies compressed air to the main nozzle. [0003] In order to properly control the initial action characteristics of the injection pressure of the main nozzle for weft insertion, when the injection pressure of the main nozzle is initially activated, the main valve is driven by an...
Claims
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IPC IPC(8): D03D47/30
CPCD03D47/3033
Inventor 牧野洋一
Owner TOYOTA IND CORP