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Device for forming a jacquard type shed, a loom fitted with such a device, and a method of forming the shed on such a loom

A shed and pattern technology, applied to jacquard machines, looms, and other shedding mechanisms, can solve the problems of long adjustment time and high precision requirements

Active Publication Date: 2007-12-19
STAUBLI FAVERGES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is suitable to modify the shed parameters, the knitter needs to make very many adjustments to these parameters. Such adjustments take a long time and require high precision, so they also become a source of error.

Method used

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  • Device for forming a jacquard type shed, a loom fitted with such a device, and a method of forming the shed on such a loom
  • Device for forming a jacquard type shed, a loom fitted with such a device, and a method of forming the shed on such a loom
  • Device for forming a jacquard type shed, a loom fitted with such a device, and a method of forming the shed on such a loom

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Experimental program
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Embodiment Construction

[0028] The loom M shown schematically in Fig. 1 is equipped with warp threads 1, each of which passes through the 1 Indicates) the eyelet 2 of the driven heddle 3, the reciprocating movement is generally perpendicular to the direction in which the weft yarn is engaged in the shed (the direction indicated by the double arrow F 2 express). Each heald is connected by a harness 4 to a pulley 5 driven in rotation by an electric servomotor 6 forming the actuator of the pulley 5 . At the bottom of the healds, each heald 3 is connected by a rod 7 to a return spring 8 fixed to a structure 9 of the loom M.

[0029] In practice, the number of actuators 6 in the loom M may be 12,000 or more.

[0030] To control all or some of the actuators 6 a central computer C is used 1 and multiple remote computers C 21 , C 22 , C 23 ,...,C 2i , where the value of i is adapted to the number of actuators 6 . each computer C 21 Or an equivalent computer is arranged in the vicinity of the servo m...

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Abstract

This device for forming a Jacquard type shed comprises a plurality of electric actuators (61) and control means (C1, C21) for controlling each actuator (61) suitable for generating a signal (S211) representative of the value of at least one parameter (A). The control means comprise an analyzer (C'21) suitable for analyzing, for at least one pick (dn), the design that corresponds to one or more picks. The control means also comprise a unit (C''21) for determining a modification factor on the basis of the result of the analysis carried out by the analyzer (C'21), in order to modify the value of the parameter (A) as determined by the computer.

Description

technical field [0001] The present invention relates to a device for forming a jacquard-type shed of a loom and a loom equipped with such a device. The invention also relates to a method of forming said shed on such a loom. Background technique [0002] In the technical field of shedding, International patent application WO-A-90 / 01081 discloses the electric control of electric actuators in looms of the Jacquard type. European patent application EP-A-1559816 discloses an electric actuator for moving the harness of a jacquard machine using computer control, which controls the displacement of the harness between a high position and a low position so that each pick will form a shed. Jacquard harnesses can have more than 12,000 individually controlled threads in order to create designs containing more than 20,000 picks. [0003] The shed is defined as the channel through which the heddle changes with time, so the shed parameter can be the magnitude of the movement, its shape, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D49/24D03D51/00D03C13/00D03C3/20
CPCD03C3/20D03C3/205D03C3/24D03C3/00
Inventor 西尔万·皮热拉裴尔·珀热沃尔特·马尔舒拉
Owner STAUBLI FAVERGES SA
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