FR2609052A1 - DEVICE FOR STRUCTURING, CREATING DRAWINGS AND MODIFYING THE MASS BY SURFACE UNIT OF A STREAM OF TEXTILE FIBERS OR YARNS - Google Patents

Abstract

DEVICE FOR STRUCTURING, CREATING DRAWINGS AND MODIFYING THE MASS BY SURFACE UNIT OF A STREAM OF FIBERS OR TEXTILE YARNS OF A FLAT FORM, COMPRISING A SUPPORT 1, CONVEYORS 2 AND A FIXING DEVICE 3, CHARACTERIZED IN THAT EXTENSION ELEMENT 4 ACTING ON THE FIBER OR THREAD CURRENT 5, CONNECTED TO AT LEAST ONE SHAPE MODIFYING MECHANISM 11 IS PROVIDED ABOVE OR BELOW OR INSIDE THE FIBER OR THREAD CURRENT 5 .

Description

1i 2609052 The invention relates to a device intended to structure,

  create designs and modify the mass per unit area of a stream of flat textile fibers or yarns. A device is known for modifying the mass per unit area (DD 150 229) in which card tapes or cables of primary filaments are widened or spread mechanically by

  guidance on several arcuate round bars.

  This device has the disadvantage that it does not allow to structure or create drawings on

  the stream of flat fibers or threads.

  There is also known a device intended to modify the mass per unit area (DE 2 403 333) in which the basic supply, card web, is separated into several strips which are subsequently joined together by means of rubbers and rollers special, to form a new width

of card veil.

  This device also has the disadvantage of not making it possible to structure or create drawings; moreover, it can only be used exclusively

for the manufacture of flock.

  The object of the invention is to produce a device making it possible to structure, create drawings and modify the mass per unit area of a current.

  flat fibers or yarns.

  This object is achieved according to the invention in that an elongation element acting on the current of fibers or threads, and connected to at least one mechanism for modifying the shape, is arranged above or below or at the bottom. inside the current

fibers or yarns.

2 2609052

  Various other features of the invention

  emerge from the detailed description which follows. A

  embodiment of the invention is shown by way of non-limiting example in the drawings in which: FIG. 1 is a schematic side view of the device arranged below, FIG. 2 is a schematic top view of the device arranged below , Figure 3 is a schematic view of the 10 directions of intervention of the mechanism for modifying the shape on the elongation element, this mechanism here being a folding mechanism, Figure 4 is a schematic view of the directions of intervention of the mechanism for modifying the shape on the elongation element, this mechanism here being a torsion mechanism, FIG. 5 is a schematic view of the direction of intervention of the elongation mechanism in combination with the torsion mechanism, 2O Figure 6 is a schematic side view of the device arranged above, Figure 7 is a schematic top view of the device arranged above, Figure 8 is a schematic view of the device arranged inside ur, FIG. 9 represents partial elongation elements comprising differently arranged driving elements, FIG. 10 represents partial elongation elements of different elasticity, FIGS. 11a to c represent partial elongation elements of different displacement in

direction, speed and course.

  Figures i and 2 show the device

  according to the invention schematically.

3 2609052

  The device comprises a support 1 for the transporters 2, for example transport rollers, a known fixing device 3 and therefore not described in more detail, as well as an elongation element 4. The elongation element 4 is arranged below the stream of fibers or threads. By fiber or yarn stream is meant card tapes, card webs, primary filament cables, sheets of primary filaments, sheets of thin sheet son

  as well as their segments and combinations.

  The elongation element 4 is made of an elastic material of flat shape or in a strip, for example of bands arranged side by side or of a mesh fabric or of single threads, the elongation element being able to elongate and return to its original position after stretching. By elongation element is also meant an element, for example a rubber block, which can be compressed and which relaxes again after the pressure has ceased

(negative elongation).

  The elongation element 4 is made of a material with a high coefficient of friction; it may for example be an adhesive strip; the elongating element 4 can also include driving elements 6 in the form of needles, loops, buttons, hooks, bristles, noose, teeth, etc. Figures 1 and 2 show elements, for example needles, arranged on the elongation element 4 and which pass through the stream of fibers or threads; these elements are variable in height according to the product to be treated, that is to say that they cross the current of son or fibers in

partially or totally.

4 2609052

  On at least one side, the elongation element 4

  is fixedly disposed on the device.

  A shape modification mechanism is arranged on the elongation element 4. When this mechanism is produced in the form of a folding mechanism 11, it is disposed on the elongation element 4 at any spatial angle , that is to say under

  an angle to the plane of the product to be treated.

  This arrangement is shown schematically in Figure 3. In this case, the elongation element 4 is fixed on both sides and provided with a folding mechanism acting upwards, the direction of action thereof being designated by a thick arrow. The other arrows indicate the directions

  possible action of the folding mechanism.

  Produced in the form of a torsion mechanism 12, the shape modification mechanism is arranged on the elongation element 4, at any angle situated in the plane of the product to be treated, relative to the transverse direction of the treatment. This arrangement is shown schematically in Figure 4. In this case, the elongation element 4 is fixed on one side and provided with a twisting mechanism acting on an angle of the elongation element. The direction of action of the torsion mechanism which is designated in., Dcssin by a thick arrow. The other arrow indicates the possible directions of action of the torsion mechanism. If necessary, an elongation mechanism 7 can be arranged on the elongation element 4, acting

  perpendicular to the processing direction.

  FIG. 5 ′ shows the combination of an elongation mechanism 7 arranged on the elongation element 4 and a torsion mechanism 12. The form modification mechanisms 5 2609052 can be used alone

  or in combination with an elongation mechanism.

  The elongation element 4 is either provided on both sides with an elongation mechanism 7 consisting of a known translation mechanism or a rotation mechanism both controlled at the working rate, or is fixedly arranged on one side and provided only on one side with an elongation mechanism 7, or fixed in the middle and provided on both sides with an elongation mechanism 7 which, in connection with the removal of the element elongation, allows a displacement thereof perpendicular to the direction of treatment. The translation mechanism can for example be a hydraulic cylinder, while the rotation mechanism can for example be a stepping motor which drives a roller disposed along the processing direction on which is

guided the extension element 4.

  The elongation element 4 with the elongation mechanism 7 is preferably arranged perpendicular to the direction of treatment. An arrangement of the elongation element 4 with the elongation mechanism 7 is possible at any angle relative to the direction of treatment,

as well as in this direction.

  The elongation element 4 also consists, if necessary, of at least two elongation elements

partial 4.1, 4.2.

  FIG. 9 shows an elongation element comprising two partial elongation elements 4.1; 4.2, each of the partial elongation elements comprising driving elements 6 of arrangement

different geometric.

  FIG. 10 shows an elongation element comprising two partial elongation elements 4.1;

6 2609052

  4.2, each of the partial elongation elements being made of a material of elastic modulus El; E2 different. The different elasticity can also be achieved by different geometric dimensions of the

partial extension elements.

  Figures 11a & llc show elongation elements 4 including the partial elongation elements 4.1; 4.2 have different displacements

  as for their direction, speed and course.

  Figure 11a shows elongation elements 4 including the partial elongation elements 4.1; 4.2 have different directions of movement, indicated by arrows, for example directions of

  opposite or similar displacement.

  FIG. 11b shows elongation elements 4 including the partial elongation elements 4.1; 4.2

  lengthen at speeds V1; V2 different.

  FIG. 11c shows elongation elements 4 including the partial elongation elements 4.1; 4.2

  have S1 paths; S2 different.

  It is possible to combine together the variants of the partial elongation elements shown in FIGS. 9 to 11. In addition, a lifting and lowering mechanism 8, for example a translation mechanism controlled at the working rate, is arranged. on the elongation element 4 and causes a displacement thereof perpendicular to the processing direction, that is to say an input and output movement of the elongation element relative to the current of

yarn and fiber 5.

  The extension element 4 is made in a

  material allowing air to pass through; below this

  here is a device for fixing the

7 2609052

  position containing a suction box 10 connected to

a source of suction air 9.

  In FIGS. 6 and 7, the elongation element 4 is arranged above the stream of fibers or threads 5, and the driving elements 6 used are buttons. The elongation element 4 is here also provided with an elongation mechanism 7 and a

  lifting and lowering mechanism 8.

  At the same time, the driving elements 6 are connected on one side, by group or together to a control device 13. The control device makes it possible to put into service certain driving elements or certain groups of them, o when the hook needles are used, to control the closing and opening operation and thus simultaneously obtain a needling effect. FIG. 8 represents a variant in which the elongation element 4 is placed inside the stream of fibers and threads 5. In this variant, the driving elements are arranged on one or on both sides of the element elongation. The mode of operation of the device according to the invention is described below in more detail: The stream of fibers or threads 5 guided by means of the conveyors 2 on the suppQrt 1, reaches

  in the area of action of the extension element 4.

  The elongation element 4 is brought into the working position by the lifting and lowering mechanism 8, that is to say in active connection with the stream of fibers or threads 5. The active connection is achieved by geometric assembly, by adhesion or by reaction between materials, depending on the configuration of

coaching elements.

8 2609052

  In the embodiment in which the elongation element 4 is fixed on both sides and provided with a folding mechanism 11, the initiation of a translational movement by means of the folding mechanism, disgorges the element d elongation 4 and therefore also the current of fibers or yarns, or groups of fibers or yarns have left the plane of the product to be treated by the driving elements 6, hence a structuring and creation

  of drawings or a modification of the mass per unit of -

surface of the product to be treated.

  In the embodiment in which the elongation element 4 is fixed on one side and provided with a torsion mechanism 12, the initiation of a translational movement by means of the torsion mechanism 12, deforms the elongation element 4 and consequently the current of fibers or threads, which makes it possible to obtain a structuring and the creation of a design or a modification of the mass per unit of

surface of the product to be treated.

  In the embodiment in which the elongation element 4 is provided with an elongation mechanism 7 acting perpendicular to the direction of treatment, the activation of the elongation mechanism 7 makes it possible to obtain a modification of the mass per unit area or in conjunction with partial elongation elements 4.1;

  4.2; structuring and creating drawings.

  The torsion mechanism 12 and / or the folding mechanism 11 and the extension mechanism 7 is put into service and the extension element 4 is deformed, that is to say that the working phases of the device

  are identical to the deformation phase of the element -

  elongation. We thus obtain a design and a structure as well as a reduction in mass by

9 2609052

  unit area of the fiber or yarn stream.

  According to a second variant, the torsion mechanism 12 and / or the folding mechanism 11 and the elongation mechanism 7 is put out of service, which causes the elongation element to retract (return to its non-elongated position), c that is to say that the phases of non-operation of the device are identical to the phase of withdrawal of the elongation element. We thus obtain the creation of a design and the structuring as well as an increase in the mass

  per unit area of the fiber or yarn stream.

  As a result of the subdivision of the extension element 4 into partial extension elements 4.1; 4.2, a partial modification of the current of fibers or threads makes it possible to obtain a structuring and the formation of a pattern thereon which appears alone or in combination with the total modification of

mass per unit area.

  The next working step is a disengagement of the elongation element 4 by the lifting and lowering mechanism 8. The position of the stream of fibers or threads, modified by the elongation element, is fixed for example by means of the suction box 10 - suction of the current of fibers or threads against a support -, other means of

fixing that can be used.

  The stream of fibers or threads is then transported by means of the conveyors 2, and the fixing device 3 fixes the stream of fibers or

  of wires in a known manner, in the new position.

  The next work step is then started from the

described way.

1o 2609052

Claims (20)

  1. Device for structuring, creating designs and modifying the mass per unit area of a stream of iber or flat-shaped textile yarn, comprising a support (1), conveyors (2) and a fixing device ( 3), characterized in that an elongation element (4) acting on the stream of fibers or threads (5), connected to at least one shape modification mechanism (11; 12) is arranged above or below or inside the fiber or yarn stream (5).   2. Device according to claim 1, characterized in that the shape modification mechanism is a folding mechanism (11) acting at any angle relative to the plane of the product to be treated, arranged on the element elongation (4).   3. Device according to claim 1, characterized in that the shape modification mechanism is a torsion mechanism (12) acting in the plane of the product to be treated, at any angle relative to the transverse direction of   treatment, arranged on the elongation element (4).   4. Device according to claim 1, characterized in that the point of arrangement of the shape modification mechanism (11; 12) on the elongation element (4), is identical to all   points of the elongation element.   5. Device according to claim 1, characterized in that the elongation element (4) is   an elastic element of flat or strip form.   6. Device according to claim 1, characterized in that driving elements (6)   are arranged on the elongation element (4).   h 11 2609052 7. Device according to claim 6, characterized in that the entraining elements (6) are elements which partially or totally pass through the stream of fibers or wires (5) of flat shape! arranged at any angle by   ratio & elongation element.   8. Device according to claim 1, characterized in that an elongation mechanism (7)   at least is arranged on the elongation element (4).   9. Device according to claim 1, characterized in that the elongation element (4) consists of at least two elongation elements partial (4.1; 4.2).   10. Device according to claim 1, characterized in that the materials of the partial elongation elements (4.1; 4.2) have   different elastic moduli (E1; E2).   11. Device according to claim 1, characterized in that the driving elements of different geometrical arrangement, are arranged on   the partial elongation elements (4.1; 4.2).   12. Device according to claim 1, characterized in that extension mechanisms carrying out different displacements as to their direction, speed and course, are associated with   partial extension elements (4.1; 4.2).   13. Device according to claim 1, characterized in that the elongation mechanism (7) is arranged on one or both sides of the element elongation (4).   14. Device according to claim 1, characterized in that the extension mechanism (7) is arranged on both sides of the extension element (4) fixed in the middle. 12 2609052   15. Device according to claim 1, characterized in that the elongation element (4) is assembled with a lifting and lowering mechanism (8). 16. Device according to claim 1, characterized in that the elongation phase of the elongation element (4), produced by the operating phase of the elongation mechanism (7) and / or of the modification mechanism of the shape is   identical to the working phase of the device.   17. Device according to claim 1, characterized in that the phase of withdrawal of the elongation element (4) produced by the phase of non-operation of the elongation mechanism (7) and / or of the mechanism for modifying the shape is   identical to the working phase of the device.   18. Device according to claim 1, characterized in that the elongation element (4) is made of a material allowing air to pass through and in that a suction box (10) connected to an air source d suction (9) is arranged below the elongation element.   19. Device according to claim 1, characterized in that the elongation element (4) is arranged on at least one side, fixedly on the device. 20. Device according to claim 6, characterized in that a control device (13)   at least is associated with the driving elements (6).