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Thread processing system and adaptation method

A technology for handling systems, yarns, used in thin material handling, transportation and packaging, textiles and papermaking, which solves problems such as difficult to reliably avoid false signals

Inactive Publication Date: 2009-04-08
IROPA AG (CH)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the measuring yarn feeder controller does not know the actual adjusted diameter of the memory body, it is currently difficult to reliably avoid false signals after adjustment to a new diameter

Method used

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  • Thread processing system and adaptation method
  • Thread processing system and adaptation method
  • Thread processing system and adaptation method

Examples

Experimental program
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Embodiment Construction

[0015] figure 1 The yarn processing system shown schematically in , comprises an air-jet loom W and a weft measuring yarn feeding device F in a yarn channel. There may be multiple yarn channels. An inserting device E intermittently inserts a weft yarn Y of a predetermined picking length from a measuring yarn feeding device F into the shed 5 of the loom.

[0016] The insertion device E of the air-jet loom W comprises controlled air nozzles. The loom shed has a predetermined dimensioned textile width B shown in solid line. The weaving width B shown by B can vary. The controller panel 6 of the loom W is connected to the loom controller MC. The loom controller MC is connected to the yarn feeding device controller C, for example via a communication bus system BS (eg CAN bus system) and / or via at least one information transmission channel A.

[0017] In the housing of the measuring yarn feeding device F is arranged a drive motor M for the winding element 2 . The memory body 3 ...

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PUM

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Abstract

The invention relates to an air-jet loom (W) and a thread processing system comprising at least one weft-thread measuring delivery device (F), in which a loom controller (MC) and a measuring delivery device controller (C) are connected via an information transmission route (A) for at least the cloth width (B, B') and the storage body diameter (D) that is to be set can be defined using the transmitted cloth width information (iB). An optoelectronic thread sensor (S) generates signals from the presence or absence of the weft-thread (Y) in a scanning zone (Z) on the storage body (4). The thread sensor (S) is a reflection-operated sensor, which can be used to generate weft-thread presence and absence signal levels (Hi, Lo, Hi , Lo ). An automatic level threshold selection device (K) is connected to the information transmission route (A), said device having at least two different level thresholds (S1, S2) for signal level evaluation for different cloth widths. Each level threshold value (S1, S2) lies between the respective presence and absence signal levels for the diameter that is correlated with the current cloth width (B, B'). This allows the measuring delivery device to automatically adapt, with regard to the thread scanning operation, to the current cloth width or the defined diameter (D) of the storage body.

Description

technical field [0001] The invention relates to a yarn handling system according to the preamble of claim 1 and to a method according to the preamble of claim 6 . Background technique [0002] Since each weft yarn in the air-jet loom must be inserted into the shed of the loom by the air-jet loom, the picking length must be measured by the measuring yarn feeding device according to the actual weaving width of the air-jet loom adjusted separately. Therefore, a braking device comprising a braking element is provided on the measuring yarn feeding device. Depending on the weaving cycle, the braking element is moved into the storage body or retracted from the storage body. When combined, the braking element locks the weft yarn against further retraction. When retracting, the brake element allows retraction of a predetermined number of weft thread coils until the next engagement of the brake element occurs and until the respective pick length is reached. In order to adjust the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H51/22D03D47/36
CPCD03D47/367
Inventor 马尔科·科伟利
Owner IROPA AG (CH)