System for automatically controlling the spreading of a textile sheet
AssigneeMessier-Bugatti
InventorsYvon Baudry, Robert Jean, Jean Pascal Pirodon
Life of this patent
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Abstract
Apparatus for automatically controlling the spreading of a textile sheet made up of a plurality of tows coming from a tow feed module and serving to feed a drive module, the apparatus comprises means for measuring the positions of the longitudinal edges of each tow, means for individually adjusting the width of each tow, means for individually adjusting the position of each tow in a direction perpendicular to a tow advance direction, and digital processor means responsive to said position measuring means to control the adjustment means in such a manner that the textile sheet presents determined width and position.
Claims14
Apparatus for automatically controlling the spreading of a textile sheet made up of a plurality of tows coming from a tow feed module for feeding to a drive module, the apparatus comprising means for measuring the positions of the longitudinal edges of each of the plurality of tows, means for individually adjusting the width of each tow, means for individually adjusting the position of each tow in a direction perpendicular to a tow advance direction, and digital processor means responsive to said position measuring means to control said adjustment means in such a manner that said textile sheet presents determined width and position.
A method of automatically controlling the spreading of a textile sheet made up of a plurality of tows, the method comprising:
- detecting the longitudinal edges of each tow;
- calculating tow widths Li for each tow;
- calculating overlap values Ri corresponding to overlaps between tows;
- calculating a total textile sheet width value Ni based on the detected position of each longitudinal edges of each tow;
- comparing the values of Li, Ri, and Ni with reference values Lc, Rc, Nc, respectively;
- and
- adjusting the width and the position of one or more tows so as to reduce the difference between the measured values of Li, Ri, and Ni and the reference values Lc, Rc, and Nc, respectively.
Apparatus for automatically controlling the spreading of a textile sheet made up of a plurality of tows coming from a tow feed module for feeding to a drive module, the apparatus comprising means for measuring the positions of the longitudinal edges of each of the plurality of tows, a second actuator acting on a bell crank and a connecting rod to move a slider supporting the tow, wherein the position of each tow are adjusted in a direction perpendicular to a tow advance direction, and digital processor means responsive to said position measuring means to control said adjustment means in such a manner that said textile sheet presents determined width and position.
An apparatus for automatically controlling the formation of a textile sheet made from a plurality of tows, comprising:
- a detector for locating a transverse position of respective edges of each of the plurality of tows;
- a computing device constructed and arranged to determine widths Li of each tow, an overlap Ri between adjacent tows, and a width Ni of the textile sheet, based on the detected transverse positions of the edges of each of the plurality of tows;
- a comparator constructed and arranged to compare determined values of Li, Ri, and Ni with respective reference values Lc, Rc, and Nc;
- an adjustment system controlled in accordance with comparison results from said comparator for adjusting widths and transverse positions of the respective tows so as to make the values of Li, Ri, and Ni approach the reference values Lc, Rc, and Nc.
Dependencies are inferred from the claim text.