FR2775989A1 - DYE COATING HEAD BY MOVING WIRE ON MOVING WIRES - Google Patents

Abstract

The present invention relates to a coating head for dyeing by depositing a bath on moving threads, in particular for a treatment of the "space dyeing" type, which essentially consists of a treatment chamber (1) provided, on at least one face side view in the direction of the running of the threads, of a means for guiding and / or supporting the individual threads of a layer of threads, and containing a means (3) for applying dye cooperating with a means (4) d 'cyclical interruption of the dye application. Coating head characterized in that the means (3) for applying the dye is at least doubled on the same axis in a direction perpendicular to that of running of the threads. The invention is more particularly applicable in the field of the textile industry, in particular the treatment of threads, in particular by dyeing of threads.

Description

DESCRIPTION

  The present invention relates to the field of textile industry, in particular the treatment of threads, in particular by dyeing threads and has for its object

  a dye coating head by bath deposition on moving threads.

  The textile threads generally undergo, before their use, in particular for weaving, washing and / or bleaching treatments as well

than dye.

  To this end, the dyeing is in particular carried out by wet means using machines with one or more coating heads, which are crossed by the threads of a sheet of threads to be dyed. At the entrance to the latter, the wires need to be perfectly maintained and guided, in order to avoid any entanglement which is detrimental to proper operation, by means of holding and guiding devices generally consisting of combs and, possibly, of fixed supports arranged upstream of each coating head, on the lateral face

  corresponding to said coating head.

  The coating heads are in the form of boxes containing a spraying device and wire supports, these boxes being provided with a lateral opening for access to said internal spraying device and wire supports, closed by means of '' a removable door, and an external means for guiding the wires and for supporting the latter, generally in the form of a comb fixedly mounted in front of a thread passage slot provided in the

removable door.

  The combs or other supports allow perfect guidance of the wires at the inlet and in the coating heads, by preventing any erratic displacement of the wires, such as vibrations causing jumps of wires which may have for

  consequence a harmful intermingling of said threads.

  In these known coating heads, the layers of yarns to be dyed are laid out by needles connected individually to each yarn and threaded successively into the external guide means, or comb, then into the enclosure through the slot of the removable door, the support and internal guide means and a second outlet slot provided on the face of the enclosure

opposite the removable door.

  To facilitate the threading of the threads of a layer of threads and simplify access to the interior of the coating head, it has been proposed, by FR-A2 748 756, a dye coating head by deposition bath on moving wires -2- in the form of a box in two elements hinged together and opening on the front and provided with means for guiding and / or supporting the individual wires of a sheet of wires, mounted on its upstream lateral face, seen in the direction of movement of the wires, with the possibility of transverse displacement relative to this direction. These known coating heads are generally provided with a spray head or other spraying means directing a dye bath jet on the threads running in the box, this coating head cooperating with a movable shutter in the form of disc provided with at least one calibrated dye passage slot for stain impregnation

  commonly called "space dyeing", by cyclic interruption of the dye jet.

  A coating machine thus equipped is known in particular from FR-A-2 719 058. The machines provided with these coating heads generally make it possible to satisfy all the quality requirements. However. their processing capacity is limited to a number of wires corresponding to the width of the sheet formed to the maximum length of the slot or slots provided on the obturator disc, ie substantially within the radius of said disc. As a result, an increase in the quantity of wires to be treated is only possible by increasing the internal volume of the coating head with a view to housing a larger shutter disc, therefore having more radial slots. long. However, such a solution cannot be envisaged, for obvious reasons of the size of the coating heads, which would cause

  corresponding oversizing of the whole machine.

  In addition, an increase in the coating yield by increasing the running speed is necessarily limited by the speed of

  penetration of the dye bath into the threads and fibers.

  The aim of the present invention is to overcome these drawbacks by proposing a head for coating dye by depositing a bath on moving yarns, allowing a substantial increase in the width of the ply of yarns to be treated and,

  thus, a corresponding improvement in yield.

  To this end, the dye coating head by bath deposition on moving son, in particular for a treatment of the "space dyeing" type, which is essentially constituted by a treatment enclosure provided, on at least one lateral face seen in direction of movement of the threads, of a means for guiding and / or supporting the individual threads of a layer of threads, and containing a dye application means cooperating with a means of cyclic interruption of the dye application, is characterized in that the dye application means is advantageously at least split on the same axis in the direction

  perpendicular to that of the scrolling wires.

  The invention will be better understood from the description below. who

  relates to a preferred embodiment, given by way of nonlimiting example, and explained with reference to the appended schematic drawings, in which: FIG. I is a view in side elevation and in section of a coating head of dye according to the invention, in the service position; FIG. 2 is a side elevation view of the head in the service position, and

  Figure 3 is a plan view of the head.

  Figures 1 to 3 of the accompanying drawings show a dye coating head by bath deposition on moving son, in particular for a treatment of the "space dyeing" type, which essentially consists of a treatment enclosure 1 provided, on at at least one lateral face seen in the direction of the movement of the threads, of a means 2 for guiding and / or supporting the individual threads of a layer of threads, and containing a means 3 for applying cooperating dye

  with a means 4 of cyclic interruption of the application of dye.

  According to the invention, and as shown more particularly, by way of example, Figures 1 and 3 of the accompanying drawings, the means 3 for applying dye is advantageously at least split on the same axis in a direction perpendicular to that scrolling wires. Thus, for the same size of the head of the treatment enclosure 1, it is possible to simultaneously impregnate two plies of parallel wires, without

  modification of the means 4 for cyclic interruption of the application of dye.

  Preferably, the treatment enclosure 1 is in the form of a box in two elements hinged together around a horizontal axis 1 ′ parallel to the axis of travel of the son in layers and opening on the front. the lower element being advantageously pivotable relative to the upper element 1, and the dye application means 3 is advantageously formed by at least two nozzles 3 ′, turbines or rotary plates for spraying a dye jet, the means 4 for cyclic interruption of the dye application being a rotary means constituted by a disc extending in a plane parallel to that of the plies of threads

  and provided with at least two diametrically opposite radial slots.

  According to an alternative embodiment of the invention, the means 4 for cyclic interruption of the dye application can also be in the form of a linear means for cutting or deflecting the dye bath, such as a

  pallet or the like moved back and forth in front of said jet.

  Another alternative embodiment of the means 4 for cyclic interruption of the application of dye may consist of a means of cyclic cutoff of the distribution of the dye bath. Such a way can. for example, be a device integrated into the dye bath supply circuit and more particularly to

nozzles or the like.

  In order to achieve perfect guidance of the plies of wires entering the treatment enclosure 1, the means 2 for guiding and / or supporting the individual wires is advantageously subdivided into a number of subassemblies 2 'equal to the number of nozzles 3', turbines or rotary plates for spraying a dye jet and each allowing the guidance of a sheet of width equal to that of the jet from the nozzle 3 'turbine or corresponding rotary plate. Thus, each ply of wires assigned to a nozzle 3 ′ is guided individually with respect to this

last.

  Preferably, the nozzles 3 ′, turbines, or rotary plates are arranged symmetrically to a vertical axis 4 ′ of support and driving in rotation of the disc forming the rotary means 4 for cyclic interruption of the application of dye. This arrangement of the nozzles 3 ′ has the advantage of taking advantage of the bulk of the disc forming the means 4. in the direction perpendicular to that of movement of the wires during treatment, without

  require any oversizing of enclosure 1 (Figures I and 3).

  According to another characteristic of the invention, the means 2 for guiding and / or supporting the individual wires, subdivided into a number of subassemblies 2 'equal to the number of nozzles 3', turbines or rotary plates is advantageously mounted on the lateral face corresponding to the enclosure 1 with the possibility of transverse displacement relative to the direction of travel of the wires. These

  sub-assemblies 2 ′ can be rigidly connected to each other or be independent.

  This method of mounting the means 2 for guiding and / or supporting the individual wires on the coating head and more particularly on the upper element constituting the enclosure 1, allows, after opening by pivoting downwards of the lower element, to easily release the layers of thread guided in the sub-assemblies 2 ′ outside the enclosure I and of the guides and support of the threads, for example for an intervention such as knotting a broken thread or else rapidly carrying out a ply of threads out of said enclosure, the envied ply then being inserted into enclosure 1 and, in particular, into the guides and support

of sons.

  -5- The subassemblies 2 'forming the means 2 for guiding and / or supporting the individual wires are advantageously mounted on a transverse guide device 5 fixed to the enclosure 1 constituting the coating head, and is

  in the form of combs or the like.

  With a view to blocking in the service position and possibly in the position for emptying, or other intervention, of the means 2 for guiding and / or supporting a layer of wires, the latter is advantageously provided with a stop means in position such as a cam or the like acting on the transverse guide device 5 under the action of a spring (not shown) and the

  unlocking is carried out by means of an operating lever 6.

  The subassemblies 2 ′ forming the means 2 for guiding and / or supporting the individual wires of a layer of wires can also be produced in the form of rotary combs constituted by stacks of discs separated by spacers, the assemblies being tightened on shafts supported by a nut and washers. Thus, depending on the title or metric number of the wires to be guided, the spacing between the discs and their thickness can be modified, respectively by replacing the spacers with thicker or thinner spacers and by replacing the discs with more discs.

thick or thinner.

  Such a rotary comb assembly allows the running wire to always remove previous deposits during its passage over said comb, so that the latter becomes self-cleaning, which is particularly advantageous for working with wet wire, as it is the case during dyeing, making it possible to avoid agglomeration of wet flock. As a result, risks of wire breakage following periodic detachment of flocks

  agglomerates can be largely avoided.

  The constitution of the treatment enclosure 1 is preferably in accordance with the embodiment described in FR-A-2 748 756, with a joint plane of the lateral faces of the two elements hinged together constituting it situated at the level of the passage of the ply of wires and delimiting, on each lateral face, a slot for the passage of said ply of wires. This passage slot is produced by means of flat guides provided respectively on the upper element and

  the lower element and placed slightly behind the joint plane.

  This constitution of the coating head into two separable elements by pivoting of one with respect to the other and opening at the level of the passage of the ply of wires allows rapid and easy insertion of said ply of wires into said head. coating and in particular in the guides and support of wires provided inside this box and intended, in particular, to maintain said wires for

  coating them with dye using 3 'spray nozzles or the like.

  According to an alternative embodiment of the invention, not shown in the accompanying drawings, the enclosure 1 can advantageously be subdivided along at least one vertical plane extending parallel to the direction of travel of the plies of son by means of at minus a vertical wall extending between the nozzles 3 ', turbines or rotary plates for spraying a dye jet, in the upper part of the enclosure 1 as close as possible to the means 4 for cyclic interruption of the application of dye, the lower part of enclosure 1 having under each compartment thus delimited an individual dye receiving tank. Such an embodiment allows the application in the same enclosure 1 of several dye baths on sheets of different threads,

but perfectly separated.

  Thanks to the invention, it is possible to produce a dye coating head by depositing a bath on moving yarns permitting impregnation of a maximum number of yarns in sheets in an enclosure of relatively small dimensions and with the use of a rotary means 4 for cyclic interruption of the existing dye application, so that the performance of such a head relative to current heads of this type can be significantly improved, namely

doubled, with equal dimensions.

  Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of

protection of the invention.

-7-

Claims (11)

  1. Head for coating dye by depositing a bath on moving threads, in particular for a “space dyeing” type treatment, essentially constituted by a treatment enclosure (1) provided, on at least one lateral face viewed in the direction of the threading of the threads, of a means (2) for guiding and / or supporting the individual threads of a sheet of threads, and containing a means (3) for applying dye cooperating with a means (4) for interrupting cyclic application of dye, characterized in that the dye application means (3) is at least split on the same axis in the direction   perpendicular to that of the scrolling wires.   2. Coating head according to claim 1, characterized in that the dye application means (3) is formed by at least two nozzles (3 '), turbines or rotary plates for spraying a dye jet 3. coating head according to claim 1, characterized in that the means (4) for cyclic interruption of the application of dye is a rotary means constituted by a disc extending in a plane parallel to that of the plies   of wires and provided with at least two diametrically opposite radial slots.   4. Coating head according to claim 1, characterized in that the means (4) for cyclic interruption of the application of dye is a means   linear cutting or deflection of the dye bath.   5. Coating head according to claim 1. characterized in that the means (4) for cyclic interruption of the application of dye is a means of   cyclic interruption of the distribution of the dye bath.   6. Coating head according to any one of claims 1 and   2, characterized in that the means (2) for guiding and / or supporting the individual wires is subdivided into a number of sub-assemblies (2 ') equal to the number of nozzles (3'), turbines or rotary projection plates of a dye jet and each allowing the guidance of a sheet of width equal to that of the nozzle jet   (3 '), turbine or corresponding rotary plate.   7. Coating head according to any one of claims 2 and   3, characterized in that the nozzles (3 '), turbines, or rotary plates are arranged symmetrically to a vertical axis (4') for supporting and driving in rotation the disc forming the rotary means (4) for cyclic interruption of the application of tincture.   - X- 8. Coating head, claim 1, characterized in that the means (2) for guiding and / or supporting the individual wires is mounted on the corresponding lateral face of the enclosure (1) with the possibility of displacement   transverse relative to the direction of travel of the wires.   9. Coating head, claim 6, characterized in that the   sub-assemblies (2 ') are rigidly connected to each other.   10. coating head, claim 6, characterized in that the   subsets (2 ') are independent.   11 1. Coating head, any one of claims 6 and 8 to 10,   characterized in that the sub-assemblies (2 ') forming the means (2) for guiding and / or supporting the individual wires are mounted on a transverse guide device (5) fixed to the enclosure (1) constituting the coating head, and   in the form of combs or the like.   12. coating head, any one of claims 1 and 6,   characterized in that the means (2) for guiding and / or supporting a sheet of wires is provided with a stop means in position such as a cam or the like acting on the transverse guide device (5) under the action of a spring and whose   unlocking is carried out by means of an operating lever (6).   13. coating head, any one of claims 1, 6 and 8 to   11, characterized in that the subassemblies (2 ') forming the means (2) for guiding and / or supporting the individual wires of a layer of wires are produced in the form of rotary combs constituted by stacks of separate discs by spacers, the assemblies being clamped on shafts supported by the a nut and washers.   14. coating head, any one of claims 1 to 5,   characterized in that the enclosure (1) is subdivided along at least one vertical plane extending parallel to the direction of travel of the plies of wires by means of at least one vertical wall extending between the nozzles (3 '), turbines or rotary plates for spraying a dye jet, in the upper part of the enclosure (1) as close as possible to the means (4) of cyclic interruption of the application of dye, the part bottom of the enclosure (1) having under each compartment thus delimited an individual tray of dye reception.