DE202007000719U1 - Machine with automatic blank detection - Google Patents

Abstract

automatic Textile cutting machine, characterized in that a changed position of cut parts using a rapport mark on the textile notes and can be recognized.

Description

TECHNICAL AREA

The The present invention relates to a cutting machine used in the Cutting textiles by automatic rapport detection enables automated cutting of the textile.

STATE OF THE ART

At the automated cutting of textiles (eg carpets, garments, advertising prints), where a consistent pattern, which is printed on the fabric is cut out of a continuous textile roll recurring is to be, is moved so that after the schematized blank Textiles - which usually with a joystick manually aligned with the printed fabric - this in a further step in case of deviations need to be re-cut.

This The process has the disadvantage that the manual alignment the cutting time-consuming and not always exactly possible is; on the other hand, the further working step leads to the Correction of cutting inaccuracies also a high proportion at Materialverschnitt, there with Web or cutting errors, as well due to deviations in the printing of patterns entire sections unusable become.

Of the The present invention is therefore based on the problem of an automated To develop cutting machine, which no additional cutting correction operations requires and no or less textile waste has the consequence.

PRESENTATION OF THE INVENTION

The disadvantages mentioned are solved with the present invention by the following features:
When imprinting patterns to be cut later, a repeat mark is printed on the raw textile next to the pattern.

These Repeat mark becomes outside or within the print area, the later cut out and used, attached, and located starting from a specific position within the repeat area in an always constant distance and previously exactly determined Position (for example, outside the printing area on the edge of the fabric).

Based this repeat mark, which is recognized by a camera system, can then on the basis of the previously defined sectional image, which in A computer file is saved by a match that is exact Position of the subsequent section be determined automatically and immediately and thus accurately be tailored.

Therefore can both the shifting of the textile when printing in the machine, as well as printing and Web defects of the fabric already taken into account at the first trimming be and make a later exact cutting in another step for correction dispensable. The Raport brand must be designed so that it can be recognized by the camera system. Has proven itself insofar a repeat mark from a ring (outer diameter 15mm, inner diameter 9mm) and a crosshair. However, any other mark, such as a barcode, a grid, or a box, etc. find application. To achieve the greatest possible contrast the repeat mark should be in the darkest color when the fabric is light to be held under pressure.

at on the other hand, the repeat mark is inverted to dark fabric: it becomes a correspondingly larger rectangle (50 × 30mm) printed in a light color on the fabric, with the ring and the crosshairs remain free and thus in the basic color of the fabric represent.

A Control the print quality can be done visually and also marked with the repeat mark be, so that this can also be detected by the camera system taken into account when cutting to become.

there the repeat mark is then manually marked with a pen (e.g. wasserunlösbare Ink) by the inner circular area blackened will, without the outer contour significantly change the ring of the rapport brand.

10

crosshairs

20

print

30

material (without pressure)

Claims (4)

Automatic textile cutting machine, characterized in that a changed position of cut parts based on a repeat mark on the textile can be noted and recognized. Machine according to claim 1, characterized in that that weaving defects in the raw textile based on a repeat mark on the textile can be noted and recognized Machine according to claim 1, characterized gekenn records that printing errors on the raw textile are noted and recognized on the textile by means of a repeat mark. Machine according to claim 1, characterized in that that from the position of the repeat mark recognized by a camera system becomes, by means of a computer program the correct position of itself subsequent Section can be determined.