Textiles: manufacturing – Warp preparing or handling – With means responsive to sensed condition
Reexamination Certificate
2000-01-14
2001-09-25
Falik, Andy (Department: 3765)
Textiles: manufacturing
Warp preparing or handling
With means responsive to sensed condition
C028S185000
Reexamination Certificate
active
06292989
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a warp repair assisting apparatus in a warper. The apparatus can easily repair an abnormality of warps when of such an abnormality occur.
DISCUSSION OF THE RELATED ART
A warper has been used to pull and planarly align as many as several thousands of warps, so that the planarly aligned warps can be taken up on a take-up beam to prepare a warp beam for weaving.
It is essential for a warper to immediately make an automatic stop upon an occurrence of an abnormality such as fluffing, end breakage or adhesion of lint and to repair an abnormal portion of warps. This is because the warps, including the abnormal portion, may hinder smooth weaving in a weaving process or degrade the quality of a fabric. In the warper, the warps run by inertia due to an inertia force of a mechanical system including the take-up beam until the warper stops after detect of the abnormal portion. A running distance of the warps by inertia varies depending on parameters such as an outermost diameter (diameter of the warps on the outermost layer on the take-up beam) of the take-up beam and a running speed of the warper. Hereinafter, a movement of a machine or parts caused by an inertia thereof is referred to as “inertia driven running” or “inertia driven run”. Accordingly, an operator has to search for the abnormal portion along the running path of the warps after the warper stops. Finding the abnormal portion to repair is not necessarily easy.
In view of the above problem, there has been proposed a repair assisting apparatus capable of easily searching for an abnormal portion of warps (Japanese Unexamined Patent Publication No. 5-321068).
This apparatus measures a running distance of the warps by inertia until a warper stops after the detection of the abnormal portion of the warps, and displays a stop position of the abnormal portion on a display device, has make a search for the abnormal portion easier and simplifies the repair by the operator.
With the above prior art apparatus, the operator needs to search the abnormal portion along the running path of the warps according to the display content of the display device. Depending upon the stop position of the abnormal portion, the operator may have to go below or behind the take-up beam, making the repair extremely difficult. Further, in order to, for example, move the abnormal portion to an operation position set at a front part of the take-up beam, the operator has to calculate a distance from the stop position of the abnormal portion to the operation position on the take-up beam. Such a calculation is cumbersome.
SUMMARY OF THE INVENTION
In view of the problem residing in the prior art, an object of the present invention is to provide a warp repair assisting apparatus in a warper, where the apparatus is provided with an outermost diameter calculation unit and a correction amount calculation unit to easily repair an abnormal portion of warps by simply positioning the abnormal portion to an operation position on a take-up beam.
In order to accomplish the above object, this invention is directed to a warp repair assisting apparatus in a warper, comprising an outermost diameter calculation unit for calculating an outermost diameter of a take-up beam, and a correction amount calculation unit to be combined with the outermost diameter calculation unit, wherein the correction amount calculation unit calculates a corrected rotation amount in the forward direction of the take-up beam, which is necessary to position an abnormal portion of warps at an operation position on the take-up beam, based on the outermost diameter fed from the outermost diameter calculation unit.
With this construction, since the correction amount calculation unit calculates the corrected rotation amount in the forward direction of the take-up beam based on the outermost diameter fed from the outermost diameter calculation unit, an operator can position the abnormal portion at the operation position on the take-up beam by rotating the take-up beam in the forward direction by the amount corresponding to the corrected rotation amount, and can quickly repair the abnormal portion at the operation position. The operation position is set beforehand in a position, for example, at an upper front portion of the take-up beam where the repair can be easily made.
These and other objects, features and advantages of the present invention will become more apparent upon a reading of the following detailed description and accompanying drawings.
REFERENCES:
patent: 5052088 (1991-10-01), Hagewood et al.
patent: 5295287 (1994-03-01), Chateau
patent: 5437082 (1995-08-01), Maenaka
patent: 5446951 (1995-09-01), Takeuchi et al.
Falik Andy
Smith Patent Office
Tsudakoma Kogyo Kabushiki Kaisha
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