FR2650002A1 - PROCESS FOR MANUFACTURING COVERED TISSUE STRIP ADJUSTMENTS, TISSUE STRIPS OBTAINED ACCORDING TO THE PROCESS AND MACHINE FOR CARRYING OUT THIS PROCESS - Google Patents

Abstract

The method consists in unwinding a strip of fabric T from its spool or mandrel to be then rewound or for another operation, to detect during the transfer operation the damaged part or parts of fabric, to be cut in a plane the piece of fabric having the defects before rewinding or other operation, then presenting on a machine in superposition the free ends respectively of the unwound fabric strip and of the rewound or evacuated fabric strip towards another operation, then performing the transverse addition R of the two aforementioned ends by said machine M by carrying out a sewing operation revealing two projecting lips capable of being folded down, then carrying out a new unwinding cycle of the coil with a view to detecting new defects .

Description

- 1 - The subject of the invention is a process for manufacturing additions of

  wound fabric bands, the fabric bands obtained by the process and the machine carrying out the process. The invention relates to the technical sector of the manufacture of strips of large width fabric wound in particular for example to produce ribbons cut 'to

  from straight yarn fabrics or bias fabrics.

  After weaving, the large width fabrics are wound on spools or cores which are conveyed in

  function of the applications for the garment, for the realization

  tion of cut ribbons and various other well known uses. Fabrics often have defects from either weaving, dyeing or finishing. It is therefore necessary to cut the damaged tissue parts having the defects which cause loss of time since it is necessary to reenfiier the machines. Thus, it is very easy to detect on the rolls of fabric which are delivered as is, the cut or cuts resulting from different cuts made. Furthermore, the lengths of fabric strips can vary in very large proportions depending on the number of cuts identified. These interfere

considerably manufacturing.

  To date and to the knowledge of the Applicant, it is not

  There do not seem to be any solutions to the above drawbacks.

your.

  The aim sought and the problem posed, according to the invention

  tion, was therefore to design a process which obviates the disadvantages

  aforementioned elements and makes it possible to obtain strips of very wide fabric wound, without defect or intermediate cuts

  to work very long strips.

  Another object sought after according to the invention was to design a process which is particularly suitable both for bias fabrics and for straight yarn fabrics with a

  special application for making uncovered ribbons

  weight. Another aim sought after according to the invention was to design a machine capable of implementing the process under good economic conditions with a presentation of the

  particularly finished and neat products.

  These and other goals will emerge well from the

continuation of the description.

  According to a first characteristic of the invention, the method consists in unwinding a strip of fabric of great width from its spool or mandrel to then be rewound or for another operation, to be detected during the transfer operation the damaged fabric parts, to cut in a transverse plane the piece of fabric presenting the defects before rewinding or other operation, then to present

  on a superimposed machine, the free ends respec-

  of the unrolled fabric strip and the fabric strip

  rewound or evacuated to another operation, then to be performed

  kill the transverse addition of the two aforementioned ends by said machine by carrying out a sewing operation while revealing two protruding lips capable of being folded down, then proceeding to a new unwinding cycle

  of the coil for the detection of new faults.

  According to another characteristic, simultaneously or after the sewing operation, an operation is carried out to cut the edges or ends of the fabric in order to limit the width thereof.

and get a neat finished product.

  According to another characteristic, simultaneously or after the sewing and cutting operations, an ironing operation is carried out on the free ends of the strips of

  overlapping fabric that can be folded down.

  According to another characteristic, the products obtained -3- are characterized in the application of the process to the making

of straight wire fabric.

  The products obtained are characterized in the application

  cation of the process for making bias fabric.

  5. The products obtained are characterized in their ap-

  application to the production of cut ribbons.

  According to another characteristic, the machine for implementing the process for manufacturing additions of

  strips of coiled fabric is remarkable in that it com-

  takes a frame arranged between its ends with guide bars and a means authorizing the displacement in translation along the frame of a gantry support means carrying out the addition, said frame having a fixed horizontal support allowing positioning and support in superimposition of the ends of the strips of fabric to be combined, a pressure block articulated with respect to the frame and coming to bear on part of the width of the strips of fabric leaving it overflowing towards

  the front part of fabric to allow the addition.

  These and other features will emerge

well from the rest of the description.

  To fix the subject of the invention illustrated in a nonlimiting manner in the figures of the drawings o: - Figure 1 is a plan view of an addition made on strips of straight wire fabric, 25. - Figure 2 is a plan view of an addition made on strips of oblique fabric, - Figure 3 is a schematic view illustrating the principle of the machine and implementation of the method, - Figure 4 is a view of a schematic nature complementary to FIG. 3 showing the making of the addition, FIG. 5 is a side view of the machine for implementing the method of manufacturing the additions, FIG. 6 is a plan view of the machine according to FIG. 5, - FIG. 7 is a partial front view of the machine illustrating the means for forming the additive, - FIG. 8 is a partial rear view of the machine illustrating the means for forming the additive ,

  - Figure 9 is a partial plan view in charac-

  schematic diagram illustrating the making of the addition.

  - Figure 10 is a partial view showing the means ensuring the flap of the ends of the fabric strips of

the addition.

  - Figure 11 is a partial view showing the gap

  the ends of the strips of tissue,

  - Figure 12 is a perspective view of an article

  cloth key including an addition.

  In order to make the object of the invention more concrete, it is now described in a nonlimiting manner illustrated

to the figures of the drawings.

  According to the invention, the method consists in unrolling the strip of fabric of great width from its spool or mandrel, to then be rewound on another mandrel or for another operation, to be detected during the transfer operation

  the damaged fabric parts, to cut the piece of fabric-

  in the transverse plane presenting the defects before rewinding

  swim or other operation, then to present on a machine in superposition, the free ends respectively of the strip of unrolled fabric and of the strip of rewound or evacuated fabric towards another operation, then to carry out the transverse addition of two ends mentioned above by said machine by carrying out a sewing operation while revealing two projecting lips capable of being folded down, then

  the addition operation being completed, proceed to a new

  calf cycle until a new fault is detected.

  The method according to the invention is advantageous for the production of straight thread fabric and FIG. 1 is shown,

- 5 -

  the product obtained identified with the reference (1) and the

  transverse size (R), in the direction of travel, according to arrow Fl. The method according to the invention also finds an application for the design of bias fabrics and there is shown in Figure 2 the product obtained identified with the reference (2) , the bias line (3) and the patch (R), according to the direction of travel, according to arrow F2. In this implementation, the addition is in a plane perpendicular to

the bias line.

  The fabrics presenting the additions can be kept straight or transformed into bias fabrics by

  current technical operations, and then be discovered

  swords in strips of small width to constitute ribbons, or

all other applications.

  There is shown, in Figures 3 and 4, schematically, the implementation of the method of manufacturing additions. The fabric strip (T) is thus wound on a mandrel (4) disposed on a support structure not shown and then unwound with intermediate tension bars (6) to then be evacuated to another station identified in its concept by (7) which can either be a rewinding of the fabric strip after removal of the defects or with a view to making bias fabrics, or the formation of ribbons and the like. Return rollers (5) are arranged substantially at the height of the machine allowing the addition. The

  machine that allows additions (R) is identified

  bound in its entirety by (M) and is located near the scrolling of the fabric, being arranged transversely projecting on either side of the strips of fabric deployed and stretched. When a damaged tissue part has been detected by any appropriate means, the operator proceeds to remove it by cutting. According to FIG. 4, the operator actuates a means (32) associated with a pusher (33) which passes between the rollers (5) -6 and positions the parts of the strips on the machine while maintaining them by a pressing block. We then proceed to cut the part of the deteriorated strip which comes off, while

  the free ends of the tissue parts are retained.

  The machine referenced as a whole by (M) com-

  takes a frame (9) of great length arranged between its ends

  tees forming a support base (10) with spacer guide bars (11) and a means such as an endless screw (12) for example allowing movement in translation along the

  frame of a gantry (13) supporting the means carrying out the rejuvenation

ture (R).

  At the rear of the frame is disposed along its length a fixed horizontal support (14) on which the ends of the strips of fabric to be combined are supported and superimposed

  by an addition, as indicated above.

  The horizontal support is of a certain width so as to, on the one hand, facilitate the positioning of the ends of the strips of fabric and, on the other hand, allow them to be clamped in position by a presser block (15) articulated relative to the frame. The presser block thus comprises, in a nonlimiting implementation, an arm (16) of square section to constitute or be the support of a bearing and contact face on the strips of fabric, the ends of the profile being secured at

  profiles (17) articulated by jack (18) or other to the structure

  frame size. Advantageously, the elongated arm (16)

  extends forwards by a support plate (19) susceptible-

  ble to come into contact with the strips of fabric. The width of this plate (19) is however more reduced than the support (14) fixed so as to allow a portion of fabric from which the addition will thus be carried forward.

that it will be exposed later.

  In the illustrated implementation, the ends of the

  guide bars (11) are mounted on bearings or the like

  tables incorporated into the structure of the legs.

  The gantry (13) is arranged so as to surround the -7 frame and has in its lower part a plate (20) supporting a. motor (21) and transmission and connection means (22) capable of cooperating with said worm (12). The gantry receives in its upper part in a plane above the guide and displacement bars, a plate (23) receiving a sewing machine (24) arranged perpendicular to the direction of movement of the gantry, as well as to the rear of the gantry a profiled support (25) capable

  to receive an ironing means (26) of the iron type.

  The sewing machine is fixed by its sole to the

  tray (23) by any appropriate means. At the back of the mechanic

  sewing connection (27), the head of the sewing machine receives a

  cutting means (28) for cutting and trimming the ends

  free mites of the strips of fabric sewn together, reducing

  sant overhanging parts with respect to the seam line and ensuring a perfect cut and selvedge. Alternatively, the cutting device can be arranged on the sole of the sewing machine. The cutting operation can be carried out simultaneously or successively at the seam. To facilitate this operation, an additional support plate (29) is advantageously used directly secured to the presser foot of the sewing machine mechanism. This plate (29) has an L-shaped profile and comes into abutment or substantially against the edge of the support plate (19) associated with the presser block, coming behind the seam area pressing on the

  fabric so as to avoid the formation of bad folds.

  In addition, the sewing machine is started up.

  operation by means of transmission with the motor (21) and its operation is coupled with the displacement of the gantry (13) according to arrow F. A casing (30) ensures the

protection of said means.

  According to another advantageous arrangement, the support plate (25) of the iron is arranged with two indentations (25-1) (25-2) for receiving the iron. The first imprint - 8 -

  (25-1) corresponds to the profile of the heating soleplate of the appliance

  reil and has a thermally insulating support surface it is located behind the plate opposite the active part of the machine. The support (25) has a second impression (25-2) arranged obliquely capable of coming to bear and overlapping on the lips or projecting parts

  superimposed fabrics after sewing and cutting.

  According to another arrangement, there is provided a receptacle tray (31) of the cut fabric parts to allow their collection. This bin is attached to the gantry so that it

follows its movement.

  According to another provision of the invention, it is desired that the protruding parts of the tissues at the level of

  the addition are folded down before the ironing operation.

  For this purpose, means are arranged between the mechanism

  sewing and ironing means and are susceptible to

  to shape the portions of fabric forming protruding lips after or simultaneously with the operation of sewing and cutting and leveling in order to fold them against the faces

fabrics.

  For this purpose, there is provided from the sole of the sewing machine a piece forming a horizontal guide (34) capable of being adjusted in position. The guide firstly presents, on the side of the presser block and the tissue support plate, a separating finger (35) inserted between the two parts of the superimposed tissue. In addition, a metal wire (36) or similar stretched is fixed on an axis (37) at the rear of the guide (34) and passes under the finger (35) so as to be inserted between the two parts of the fabric. Furthermore, a plate (38) is fixed laterally on the guide, on the side of the ironing support with an adjustment capacity in position. This plate is arranged to receive a profiled part (39) constituting a stop for shaping the protruding parts of the fabrics. This piece

  is profiled on its upper and lower sides for obli-

  manage during the advancement of the gantry, to raise the said -9-

  protruding parts of the tissue. The wire or cable (36) is intro-

  duit in this part and its end is fixed to an anchor point (40). Behind this shaping piece (39) is arranged a tunnel (41) of section U into which are introduced the raised ends of the tissues, the latter then being definitively folded down at the exit of the tunnel. This tunnel is integral with the plate (38). Ironing is then carried out directly on the folded-down parts of the fabric. We have

illustrated this phase (figure 10).

  Thus the adding operation is carried out in the ma-

  next. After detection of damaged tissue areas

  The operator, roughly cut, with two transverse cuts, the part of the fabric to be spread. The operator positions the ends of the strips to be connected in the superimposed position on the horizontal fixed support (14), then lowers the presser block, allowing a sufficient width to overlap

  strips of fabric to carry out the operations of addition.

  The operator puts the machine into operation, which causes the gantry to move forward with an appropriate delay.

  along the frame and the operation of the sewing machine.

  The sewing operation is therefore carried out, while the support plate (29) allows the guiding of the sewing mechanism avoiding any appearance or formation of folds of the strips of

overlapping fabric.

  Simultaneously with the sewing operation, the cutting means associated with the head of the sewing machine carries out the sectioning at a slight external projection relative to the seam line, thus ensuring a clean and regular cutting of the edges. I1 then takes place the operation of folding the ends forming protruding lips of the tissues. Then,; as the gantry advances along the frame, the support plate (25) of the iron comes opposite the overhanging part of the fabric strips. The iron which is then positioned on the second imprint (25-2) therefore comes to heat and iron said edges thus contributing to

- 10 -

  obtaining a careful addition. Figure 9 illustrates the

  different operations mentioned above.

  When the addition has been made, the block presses

  seur is raised, the fabric strip removed and the gantry returns to the initial position for a new operation.

  The advantages are apparent from the description. We

first points out:

  - the possibility of obtaining coils of fabric

  very long without flaws, avoiding the existence of different cuts on the same reel, - the simplicity of the manufacturing process, - the speed of intervention and removal of the deteriorated area and the continuous setting of fabric strips,

  - the economic design of the machine.

- 11 -

Claims (6)

  - 1 - Method for manufacturing additions of wound fabric bands, characterized in that it consists in unwinding a fabric band (T) from its reel or mandrel to then be rewound or for another operation, to be detected during the transfer operation the damaged fabric part or parts, to cut in a transverse plane the piece of fabric having the defects before rewinding or other operation,   then to present the extremi-   tees free from the unrolled fabric strip and   the strip of fabric rewound or evacuated to another operation   tion, then perform the transverse addition (R) of the two aforementioned ends by said machine (M) by   sewing operation showing two overflowed lips   dantes likely to be folded down, then to carry out a   new reel unwinding cycle for detection tion of new faults.   - 2 - Method according to claim 1, characterized in that simultaneously or after the sewing operation is carried out an operation of cutting the edges or ends of fabric to   limit the width and obtain a neat finished product.   - 3 - A method according to claim 2, characterized in that simultaneously or after the sewing and cutting and folding operations is carried out an ironing operation   free ends of overlapping strips of fabric.   - 4 - Products obtained according to any one of the claims   1, 2 and 3, characterized in the application of the process to   making fabric with straight yarn.   - 5 - Products obtained according to any one of the claims - 12 -   1, 2 and 3, characterized in the application of the process to making bias fabric.   - 6 - Products obtained according to any one of the claims   tions 4 and 5, characterized in their application to the making of ribbons. - 7 - Machine for carrying out the manufacturing process   additions of strips of fabric wound according to the claims   tions 1, 2 and 3, characterized in that it comprises a frame (9) arranged between its ends with guide bars (11) and a means (12) allowing movement in translation along the frame of a gantry (13) support of the means carrying out the addition (R), said frame having a fixed horizontal support allowing the positioning and the support in superposition of the ends of the strips of fabric to be combined, a pressure block (15) articulated relative to the frame and coming to bear over part of the width of the strips of fabric leaving it overflowing   forward a part of fabric to allow the addition.   - 8 - Machine according to claim 7, characterized in that the gantry (13) is arranged to surround the frame and has in its lower part a support plate (20), motor and transmission members (21) (22) for cooperate with the means (12) authorizing the displacement of the gantry, and in that the gantry receives in its upper part a plate (23) receiving a sewing machine (24) oriented so that its   sewing mechanism performs the transverse seam of the ban-   of fabric when moving the gantry.   - 9 - Machine according to claim 8, characterized in that the sewing machine is associated by transmission means   with the engine and transmission components (21) (22) for moving gantry. - 13 -   - O10 - Machine according to claim 8, characterized in that the sewing machine (24) is arranged to receive a cutting means (28) disposed at the rear of the sewing mechanism (27) capable of cutting and leveling the ends free strips of fabric sewn together. - 11 Machine according to claim 10, characterized in that a support plate (29) is secured to the crowbar of the sewing mechanism of the sewing machine and has an L-profile coming into abutment or substantially against the block   presser, said plate (29) bearing on the fabric behind laugh the seam line.   - 12 - Machine according to claim 8, characterized in that the gantry (13) has in the extension of the support plate (23) of the sewing machine, a support plate (25) of an ironing means (26), said plate (25) being arranged in the two cavities (25-1) (25-2), one (25-1) being arranged and arranged to receive the ironing means when not in use, the other (25 -2) being arranged obliquely to position the ironing means in abutment and overlap on the lips or overflowing portions of fabric superimposed after sewing and cutting.   - 13 - Machine according to claim 8, characterized in that the gantry (13) receives a receptacle (31) for recovering cut fabric parts.   - 14 - Machine according to claims 8 and 12 together,   characterized in that it comprises means arranged between the sewing mechanism and the ironing means capable   to shape the portions of tissue forming the overflowed lips   dantes after the sewing and leveling operation in order to   fold them against the fabric faces. - 14 -   - 15 - Machine according to claim 14, characterized in that   that the means for folding the ends of the fabric comprise   a piece forming a guide (34) integral with the sole of the   sewing machine arranged with a finger for separating the   superimposed fabric ties, a wire or cable fixed to said guide and inserted between said fabric parts, said wire being   fixed to a shaping piece (39) for lifting the ends   fabric tees to introduce them into a tunnel (41) in extension   gement, said shaping part and said tunnel being   fixed from a support plate (38) adjustable in position.