Fabric cutting system

Abstract

 The cutting system comprises cutting means (4) transversal and longitudinally movable, and it is characterised in that said cutting means (4) are ultrasound cutting means.
Said cutting system comprises transversal and longitudinal holding means (3,6) for the fabric vertically movable.
It permits to cut transversal and longitudinally fabrics without the necessity to change the position of the fabric to be cut.

Description

[0001] The present invention refers to a fabric cutting system, which permits to cut a fabric longitudinal and transversely by ultrasounds without the necessity of moving it.

BACKGROUND OF THE INVENTION

[0002] The fabric cutting machines presently known comprise a table on which the fabric to be cut is extended and a cutting head movable transversely with respect to the table.

[0003] This cutting head is mounted movably on a transverse guide fixed to the table, so that when the fabric to be cut is unwind, the head cuts transversely the fabric.

[0004] A drawback of the cutting machines presently known is that they only cut the fabric transversely, and the position of the fabric must be changed to cut longitudinally the fabric.

[0005] Another drawback of this type of machines is that the fabric is cut when the fabric is unwind from the reel where it is wound.

[0006] To solve this drawbacks, it was devised the guiding device of the cutting head disclosed in the Spanish Utility Model U200201392, of the same applicant as the present application. In this Utility Model, el cutting head is movable transversal and longitudinally along the table where the fabric to the cut is placed. However, the cutting head disclosed in this document is conventional, i.e. it is a blade, which presents the drawback that does not avoid that the fabric can fray in the cut zone.

DESCRIPTION OF THE INVENTION

[0007] The cutting system of the invention permits to solved said drawbacks, and it presents another advantages that will be described.

[0008] The fabric cutting system of the present invention comprises cutting means transversal and longitudinally movable, and it is characterised in that said cutting means are ultrasound cutting means.

[0009] Advantageously, the cutting system comprises transversal and longitudinal holding means for the fabric.

[0010] According to a preferred embodiment, said transversal holding means for the fabric comprises a transversal plate vertically movable and said longitudinal holding means comprises a pair of rotatable strips, placed at both sides of the cutting means.

[0011] Advantageously, said strips are vertically movable.

[0012] Preferably, said strips comprise a plurality of pressure rollers.

[0013] Also advantageously, said cutting means comprises an ultrasound head.

[0014] Thanks to the system of the present invention, the cut can be made by ultrasounds without the necessity of moving the fabric.

[0015] The ultrasound cut permits to weld the cutting zone, avoiding the possible subsequent fray of it.

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For a better understanding of what have been described, some drawings are attached in which, only diagrammatically and as a non-limitative example, it is shown a practical case of embodiment.

Fig. 1 is a perspective view of a cutting machine according to the system of the present invention in a position previous to the cutting of the fabric;

Fig. 2 is a perspective view of a cutting machine according to the system of the present invention, cutting the fabric transversally; and

Fig. 3 is a perspective view of a cutting machine according to the system of the present invention, cutting the fabric longitudinally.

DESCRIPTION OF A PREFERRED EMBODIMENT

[0017] As can be seen in the drawings, the machine of the system of the present invention comprises a table 1 on which the fabric 10 to be cut is placed.

[0018] At both sides of the table 1 there are placed longitudinal guides 2, along which a transversal guide 5 moves, which comprises a ultrasound cutting head 4.

[0019] Said transversal guide 5 also comprises a holding transversal plate 3, vertically movable, and holding strips 6 also vertically movable.

[0020] Said holding plate 3 is used to hold the fabric 10 when it is cut transversally, as can be seen in fig. 2.

[0021] The holding strips 6 are used to hold the fabric 10 when it is cut longitudinally, as can be seen in fig. 3.

[0022] Said holding strips 6 are two, one placed at each side of the head 4, and rotate when the head 4 moves. Said strips 6 comprise a plurality of pressure rollers 7.

[0023] As can be seen in fig. 2 and 3, when the transversal cut is done, the holding plate 3 is in its lower position and the strips 6 are in their upper position, and when the longitudinal cut is done, the position of the plate and the strips is the reverse position.

[0024] Even though reference is made to a specific embodiment of the invention, it is evident for a person skilled in the art that in the cutting system described can be made numerous variations and modifications, and that all cited details can be substituted by other technically equivalent ones, without departing from the scope of protection defined by the enclosed claims.

Claims

1. Fabric cutting system, which comprises cutting means (4) transversal and longitudinally movable, characterised in that said cutting means (4) are ultrasound cutting means.

2. Cutting system according to claim 1, characterised in that it comprises transversal holding means (3) for the fabric.

3. Cutting system according to claim 1 or 2, characterised in that it comprises longitudinal holding means (6) for the fabric.

4. Cutting system according to claim 2, characterised in that said transversal holding means for the fabric comprises a transversal plate (3) vertically movable.

5. Cutting system according to claim 3, characterised in that said longitudinal holding means comprises a pair of rotatable strips (6), placed at both sides of the cutting means (4).

6. Cutting system according to claim 5, characterised in that said strips (6) are vertically movable.

7. Cutting system according to claim 5 or 6, characterised in that said strips (6) comprise a plurality of pressure rollers (7).

8. Cutting system according to anyone of the previous claims, characterised in that said cutting means comprises an ultrasound head (4).

Drawing