Messier-bugatti Inc.

Asselin

Asselin (societe Anonyme)

Other

Merlin Gerin

Asselin-thibeau

Robert Jean

Bernard Jourde

Renaud Duval

Bernard Chatelet

Thierry Marjollet

Jean-Christophe Laune

Yvon Baudry

Francois Louis

Jean Pascal Pirodon

Serge Laffont

Francedillaois Louis

Michel Prunier

Michel Pene

Pierre Caillet

Philippe Trichet

Jean-Pierre Bioul

Andre Le Boennec

Bernard Dalban

Jean-Claude Robin

The installation includes two needling apparatuses () which succeed each other on one side of the path () for the fleece to be needled. The needles () have an 'elliptical' movement, i.e. their reciprocating movement of penetration is combined with a reciprocating movement parallel to the direction of progression. The two mechanisms are actuated at the same speed but with a phase shift of 180&#xb0; between them. The installation is used for balancing horizontal vibrations.

Method and an installation for needling a fibre fleece using two needle bars

Apparatus for automatically presenting a generally pre-needled textile sheet coming from an upstream module and intended to feed a cross-layer module, the apparatus comprising means for measuring the positions of the longitudinal edges of the textile sheet, means for adjusting the width of said textile sheet, means for adjusting the position of said textile sheet, and processor means responsive to the position measuring means to control the adjustment means in real time in such a manner that the textile sheet presents determined width and position.

System for presenting a textile sheet automatically

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.

System for automatically controlling the spreading of a textile sheet

An installation includes a carding machine ( ), and a distributor-layer ( ) depositing the card ( ) web ( ) in a reciprocating motion on a delivery belt ( ) moving transversely. The resulting intermediate lap ( ) is conveyed to a needling loom ( ) to produce a consolidated lap ( ). A measuring station ( ) scans the consolidated lap ( ) profile and transmits it to a processing unit ( ) where the profile is compared to a set reference input by a terminal ( ). The variations in width cause a corresponding modification in the width deposited by the distributor-layer ( ) by a link ( ). The local surface weight variations cause a corresponding modification of the controls applied to the carding machine ( ) capable of longitudinally profiling the web ( ). The invention is useful for controlling an installation for obtaining a finished product.

Method for controlling the profile of a non-woven lap and related production installation

A machine for needling a textile structure made up of a plurality of superposed layers comprises a vertically movable needling table, a needling head having a determined number of barbed needles and disposed vertically above the needling table, and drive means for imparting vertical reciprocating motion to the needling head, defining a low point of maximum penetration of the needles. Measuring means are provided in the machine located in the needling head to measure the position of the top surface of the textile structure at the low point of maximum penetration of the needles. The measuring means are preferably disposed in a midplane of the needling head perpendicular to an advance direction of the textile structure.

Needling machine provided with a device for measuring penetration

In a circular needling machine for needling an annular preform and comprising both a vertically movable needling table serving as a horizontal support for said annular preform, and a needling head having a determined number of barbed needles disposed over the needling table in a needling zone and driven with vertical reciprocating motion, provision is made for the annular preform to be placed directly on the needling table and for it to be driven in rotation on the needling table by drive means while the needling table remains rotationally stationary during said rotation. The drive means comprise a set of conical friction rollers kept continuously in contact with the annular preform.

Smooth-table circular needling machine

A machine for needling a textile structure built up from a wound strip of material to be needled that is delivered by strip supply means comprising a storage drum containing said wound strip of textile material, an unwinding assembly for continuously extracting said strip from said storage drum, and a helical chute or &ldquo;twist&rdquo; for taking up said extracted strip unwound from said drum and for bringing it up to a needling table where there are friction drive means. The storage drum and the helical chute have the same axis C as the needling table.

Feeding a needling machine with a continuous spiral strip

A needled fiber structure is made by stacking fiber plies on a platen, by needling the plies as the stack of plies is built up by means of needles driven with reciprocating motion in a direction that extends transversely relative to the plies, and by varying the distance between the platen and an end-of-stroke position of the needles while building up the stack so as to obtain a desired distribution of needling characteristics through the thickness of the fiber structure. The instantaneous force exerted during needle penetration is measured (sensors) and a magnitude representative of needling force or penetration energy is evaluated on the basis of the instantaneous force, and the evaluated magnitude is verified for compliance with at least one predetermined condition to monitor proper operation of the process or to act on the way the distance between the platen and the end-of-stroke position of the needles is varied.

Method of monitoring the needling of fiber structures in real time, and needling apparatus for implementing the method

A machine for needling a textile structure built up from a helical strip delivered by strip supply means, said machine comprising a needling table, a needling head, cutting means for cutting the helical strip, and conical roller drive means for rotating said strip on the needling table, at least a fraction of said conical roller drive means being retractable so as to release an empty space on said needling table enabling ejector means to remove the textile structure from the needling table.

Circular needling machine provided with a device for automatically removing preforms

Method and devices for producing a textile fleece

The invention concerns a stretcher comprising a carriage (,) subjected to a back-and-forward motion (,) for depositing in successive segments (,) a web of fibres (,) on an outgoing conveyor (,) moving along a direction (,). In order to produce ranges of different plies in the transverse profile of the lap (,) formed on the outgoing conveyor (,) by the web deposited in mutually overlapping segments, the points of inversion of direction (,) in the backward and forward motion of the carriage are different. As a result the successive folds (,) of the same direction are differently positioned, and the number of web plies in the lap is not the same over the whole width of the lap. The invention is useful for streamlining the lap freely and accurately.

Methods and devices for producing a streamlined lap and a continuous textile product

Needling machine and associated feed control method

Needling machine with sliding rod

Brush conveyor and needling machine equipped with this conveyor

Two needling assemblies have needle boards and alternating motion mechanisms. A motor is provided for each needling assembly. The needling assemblies are mechanically independent of each other. The motors are connected by an angular position servo-mechanism. The needling machine is used to eliminate the mechanical resonance between needling assemblies and to diversify and facilitate the adjusting possibilities.

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Fouqueville, France

Robert Jean