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Device for punching plastic materials

A punching and plastic technology, applied in the field of devices for forming insert punching holes

Inactive Publication Date: 2006-05-03
GIESECKE & DEVRIENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing punching of insert rings has the disadvantage that ink cracks occur especially on the upper side of the edge being punched

Method used

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  • Device for punching plastic materials
  • Device for punching plastic materials
  • Device for punching plastic materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Figure 1 shows a smart card 1, which preferably has dimensions conforming to the form of an ID-1. Included in it is a small smart card 2, an insert in the form of ID-000. Through the punching hole 3 , the plug-in is mostly separated from the remaining card body of the smart card 1 . There is only a connection to the card body via the strip 5 . The insert 2 itself comprises an integrated circuit 4 with contact surfaces. In addition to, or instead of, the contact surfaces, coils or other antennas for contactless data transmission can of course also be provided in the insert 2 .

[0020] figure 2 A cross-section of a stamping punch for forming the hollow punch hole 3 of FIG. 1 is shown. In contrast to the prior art, the stamping punch according to the invention has a punching angle of less than 90°, preferably 45°. This forms cut points 6 and 7 which allow no ink seams or the formation of burrs on the sides of the punched hole. The cross section is V-shaped with corn...

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PUM

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Abstract

The invention relates to a device for punching holes in plastic materials, which is particularly capable of forming plug-in cuts for chip boards. The punch (10) cooperates with the die, and the plastic material (1) to be punched is located between the punch and the die. In order to avoid disadvantages related to the quality of the cut edge, according to the invention the die cutting surface is designed to have a punching angle of less than 90°.

Description

technical field [0001] The invention relates to a device for forming insert punch-outs in smart cards made of plastic. Background technique [0002] Punching devices for forming plug-in punching holes for smart cards have been around for some time. The known device has a stamping punch cooperating with a support or a die plate, whereby the plastic material to be punched, ie the smart card, is placed between the stamping punch and the die plate. The stamping punch is formed with existing means so that it has the profile of the required insert punching, often using a punching angle of 90° to punch the insert from the smart card. [0003] The known insert ring punching has the disadvantage that ink cracks occur especially on the upper side of the edge being punched. In addition, the formation of burrs can be seen under the edge of the insert that is punched, with porosity remaining underneath. With punching devices, due to the very high punching pressure, ink deposits appear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/077B26F1/14B26F1/44G06K21/06
CPCG06K19/077G06K19/07739Y10T83/8822Y10T83/9423
Inventor 乔格·德雷谢
Owner GIESECKE & DEVRIENT GMBH