Cutting procedure for producing textile pieces in continuous production processes

Description

Object of the Invention.

[0001] This invention relates to a cutting procedure for producing textile pieces in continuous production processes.

State of the Art.

[0002] The need to use textile pieces for domestic and/or professional uses, such as in industrial or service sectors, to replace the costly existing textile products, has made it necessary to reduce the production cost of such textile pieces, and therefore it has become imperative to develop a process to produce this product at a competitive price and with the properties of the fabric for which it is used.

[0003] Textile pieces produced in continuous production processes and achieving lower manufacturing costs are known. The drawback of the textile pieces resulting from known processes is that they have to be discarded after several uses, since after the first few washes to prepare the textile piece for further use the edges show considerable fraying, deteriorating and having to be replaced, thus increasing the cost of the use of these products.

[0004] This fraying is due to the separation of the threads at the edge of the fabric, where the cut has been made, where the edge concerned has been pre-stamped, which is insufficient to prevent the product from fraying after numerous washes.

Summary of the Invention.

[0005] The purpose of the invention is a procedure for cutting fabric, in normal textile roll form, in a continuous product process, to produce textile pieces at low manufacturing cost and with high resistance to fraying, preferably over fifty washes.

[0006] To achieve this, within the manufacturing process of the textile piece covered by this invention, the fabric is prepared in various stages in order to subsequently use a suitable, higher precision, automated cutting system, thus reducing production costs and obtaining a product with high resistance to fraying.

[0007] The preparation of the fabric before cutting includes the marking of the fabric itself in a previous stage for the purposes of indication. This purpose of this mark is to provide an indication detectable by the elements installed in later stages of the procedure, making it possible to act on the cutting media and perform the aforementioned cutting of the pieces transversely to the specified length.

[0008] The cutting media are arranged on a rotating cylinder and preferably act by applying heat to the cutting point, following the path marked using a helical system. The action of these cutting media is determined by the order of the media regulating the movement of the rotating cylinder when the mark placed on the fabric is detected, obtaining the cut at the predetermined point-line.

[0009] To obtain the fray resistance feature, in a stage prior to the cutting action, either before or after the marking of the fabric, a cohesive product is applied to the area where the cut is to be made. The aim of this cohesive product is to create, at the time of cutting, a sort of weld between the cut threads of the fabric, preventing fraying after numerous uses and/or washes.

[0010] These stages prior to the cutting action, which is completed and automated by the aforementioned actions, are normally complemented by the alignment and centring of the piece of fabric as it passes through the rollers of the process, such mechanical adjustments possibly being automated.

[0011] Other details and features will be set out over the course of the description below, showing a practical manufacture of the invention as an illustration, without limiting it to that use.

Description of an embodiment of the invention.

[0012] In one of the preferred embodiments of the invention, the procedure for the cutting of textile pieces designed to be performed in a continuous production process consists of a stage prior to cutting in which the fabric is marked by stamping. Alternatively, this can be done by printing or other systems that allow such marking.

[0013] This mark is made on the fabric automatically, preferably by a stamping cylinder with a perimeter to match the cutting length, thus leaving a given distance between consecutive marks

[0014] Alternatively to the use of a stamping cylinder, which depends on its diameter, the marking of the fabric at a given distance can be performed by procedure control media which have been programmed to perform this fabric marking action at the required distance automatically by suitable means, according to production needs.

[0015] This mark is detected by the optical detection media, in this case photoelectric cells, which are installed in the path of the fabric and act by communicating to the procedure control system the moment at which the mark has been detected. The control media, knowing the speed of advance of the fabric, adjust the radial movement of the rotating cylinder so that the cutting media act at the right time, to produce a final product with the predetermined length.

[0016] In this embodiment, these cutting media consist of an ultrasound system that follows a helical path marked on the rotating cylinder, in order to make an accurate transverse cut, and applying heat to the fabric in this action.

[0017] The action of the ultrasonic cutting system is performed in an area of the fabric that has previously been impregnated by a strip of cohesive product in paste form, applied by stamping the fabric. This paste contains a polymer of such properties that it is capable of melting at the temperature produced by the cutting media, so that the edge of the final product is welded when these cutting media act.

[0018] In an alternative embodiment this cohesive product is applied to both sides of the fabric.

[0019] The cutting area is impregnated with the paste bearing in mind the predetermined size requirements, using a stamping system with a frequency adjusted to the required distance, and taking into account the mark made on the fabric, so that when the mark is identified the distance from the cutting area with the cohesive paste is known, and therefore the specific cutting point-line within this area.

[0020] The procedure includes systems for alignment and centring prior to cutting to place the fabric in the correct position before cutting. These actions are preferably performed mechanically by manual operation of the horizontal and vertical tilt of the rollers, correcting the deviations caused by the passage of the fabric through the various rollers of the process, guided by the mark on the fabric. Alternatively, this centring and alignment is performed automatically by the viewing of the marks by optical media that recognize them and act on the rollers to correct possible deviations automatically.

[0021] Alternatively to the usual continuous cutting, the ultrasound system can perform intermittent cutting to form a pre-cut to allow subsequent easy separation of the individual pieces.

[0022] Having sufficiently described this invention, it is easy to see that any sort of modification deemed necessary can be introduced as long as they do not change the essence of the invention, which is summarised in the following claims:

Claims

1. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES" in which an operation is performed in which a cohesive product is applied followed by a continuous transverse cutting operation, characterised in that prior to the transverse cutting a mark is made on the fabric for the purposes of indication, which is detected when passing by optical media, thus causing an adjustment in a rotating cylinder containing the cutting media, which perform the cut helically.

2. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 1, characterised in that in the operation for applying the cohesive product prior to the transverse cutting, a product containing a hot-melt polymer is used to form a strip or zone.

3. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 2, characterised in that the polymer is micronised.

4. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 1, characterised in that in a stage prior to the transverse cutting operation, the piece of fabric to be cut is aligned and centred, guided by the marks, using mechanical and/or automatic means.

5. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 4, characterised in that the mechanical and/or automatic means are complemented by optical recognition means.

6. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 1, characterised in that by adjusting the rotating cylinder, after the mark is detected by the optical means, the rotational speed of the cylinder and, therefore, its cutting media are controlled, causing them to coincide with the specific point-line in the cutting area.

7. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 1, characterised in that the cutting media consist of a cutting unit that applies heat to the fabric at the cutting point.

8. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 7, characterised in that the cutting media consist of an ultrasonic cutting unit that follows the path marked by the helical cutting system.

9. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 1, characterised in that the helical transverse cutting is performed intermittently to form a pre-cut.

10. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 1, characterised in that the optical recognition media consist of at least one photoelectric cell.

11. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 1, characterised in that in the phase of application of the cohesive product, the latter is applied to both sides of the fabric.

12. "CUTTING PROCEDURE FOR PRODUCING TEXTILE PIECES IN CONTINUOUS PRODUCTION PROCESSES according to the claim 1, characterised in that the indicating element consists of a mark stamped on the fabric.