Die stamping method and die stamping device
OwnerArmin Steuerinventor
Life of this patent
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Abstract
The invention relates to a die stamping method and to a device for performing the method. The problem of the invention is to reduce the production of waste during die stamping. This is brought about in that on supplying the foil web to the stamping station a sensor means monitors whether there is a defect therein. If a defect is detected, the foil web supply to the stamping station is controlled in such a way that the defect is conveyed through the stamping station between two stamping operations. Thus, the defect does not arrive in the stamping or printing area of the stamping station, so that no waste is produced.
Claims16
Die stamping method, in which a segment of a transfer area is stamped in a stamping station on a carrier material, the transfer area being supplied in the form of a continuous foil web to the stamping station, characterized in that:
- on supplying the foil web to the stamping station, by means of a sensor means, defects in the foil web are detected and said defect are conveyed through the stamping station between two stamping operations;
- the sensor means having several sensors, which are displaced at right angles to the conveying direction of the foil web whereby it can be concluded that a defect is present if on at least two sensors simultaneously a signal occurs corresponding to the presence of the defect.
Die stamping method, in which a segment of a transfer area is stamped in a stamping station on a carrier material, the transfer area being supplied in the form of a continuous foil web to the stamping station, characterized in that:
- on supplying the foil web to the stamping station, by means of a sensor means, defects in the foil web are detected and said defect are conveyed through the stamping station between two stamping operations;
- and
- the sensor means detects the electrical conductivity of the foil web.
Die stamping method, in which a segment of a transfer area is stamped in a stamping station on a carrier material, the transfer area being supplied in the form of a continuous foil web to the stamping station, characterized in that:
- on supplying the foil web to the stamping station, by means of a sensor means, defects in foil web are defected and said defects are conveyed through the stamping station between two stamping operations;
- at regular intervals (d) a segment of the transfer area having a predetermined length is stamped on the carrier material;
- and
- the transfer area has at regular intervals (s) defects, the maximum number of segments of predetermined length between two defects is determined and the supply of the foil web to the stamping station is carried out in such a way that the maximum number of segments between two defects on the foil web are uniformly mutually spaced.
Die stamping device with a supply device for supplying at least one foil web with a transfer area, having a control device for the conveying of the at least one foil web through the supply device, with a stamping station in which a transfer area segment is stamped on a carrier material, characterized in that:
- a sensor means, for monitoring the at least one foil web, comprising several sensors displaced at right angles to the foil web conveying direction, the sensors being located on the supply side of the stamping station, the sensor means for concluding that a defect is present if on at least two sensors simultaneously a signal occurs corresponding to the presence of the defect;
- and
- whereby the supply of the at least one foil web to the stamping station takes place by the control device as a function of the sensor means, such that said defects identified by said simultaneous signal from said at least two sensors are conveyed through the stamping station between two stamping operation.
Dependencies are inferred from the claim text.