Interrupted tooth on edge of coin and souvenir badge and its printing method

A technology of commemorative medal and production method, which is applied in the field of half teeth on the edge of the medal, commemorative coins and coins to achieve the effect of ensuring production efficiency

Inactive Publication Date: 2009-07-22
CHINA BANKNOTE PRINTING & MINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Printing intermittent half teeth on the side of coins and medals is a difficult production technology. According to our inquiries and searches, there are no similar products in other countries and other mints in my country.

Method used

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  • Interrupted tooth on edge of coin and souvenir badge and its printing method
  • Interrupted tooth on edge of coin and souvenir badge and its printing method
  • Interrupted tooth on edge of coin and souvenir badge and its printing method

Examples

Experimental program
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Effect test

example 1

[0028] Example 1: The jig and equipment used in the above method of processing the half-tooth die sleeve are: the jig refers to a circular steel plate used to fix the die sleeve, see Figure 7 . There is a circular hole in the middle of the steel plate, the diameter of which is larger than the diameter of the wire teeth to be processed in the die sleeve. The other two small holes on the steel plate are used to pass through bolts to fix the die sleeve, and the positions of the holes are consistent with the positions of the bolt holes on the die sleeve blank. The equipment refers to the wire cutting machine tool. There are upper and lower sets of wire guide nozzles on the wire cutting machine. When processing straight wire teeth, the projections of the connection lines of the upper and lower guide wire sleeves on the horizontal plane are coincident. See Figure 8 . During the processing, the upper and lower guide wire nozzles cut and process the mold sleeve according to the p...

example 2

[0055] Example 2: There are basically two types of demoulding jig structures for oblique wire teeth printed on the side of coins: one is the B structure, and the mold sleeve 8 is fixed, and the lower ejector rod 2 is pushed up in a spiral motion. Push the product out when done. The feature of the fixture B structure is: spiral grooves are processed on the round lower mandrel 2, see Figure 14 , the direction of rotation of the spiral groove is the same as the direction of rotation of the upper thread teeth of the product. For example, the direction of rotation of the inclined wire teeth on the edge of the product is to the right, so the direction of rotation of the spiral groove on the lower ejector rod is also to the right. When the lower ejector rod 2 moves upward, because there is a limit rod 4 fixed on the equipment in the spiral groove, the lower ejector rod 2 can only rotate and rise along the chute; see Figure 15 . The other is the A structure, see Figure 16 . In ...

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Abstract

The half-interrupted teeth on the edge of coins and souvenir stamps and the printing method include the production of wire cutting wire teeth and embossing die sets, which are characterized in that the embossing die sets are processed in separate parts: the blanks of the embossing die sets are After being divided into upper and lower parts, the mold sleeve is kept still with a special fixture, and processed in two steps. After the processing is completed, the upper and lower parts of the mold cover are connected and fastened together by fasteners. This method provides six basic wire tooth shape mold sets for the side of the coin, which can be expanded to different tooth shapes (such as circular teeth, trapezoidal teeth, triangular teeth, etc.), and different tooth pitches (the distance between the wire teeth and the wire teeth) The various combinations of intermittent half-tooth mold sets are an important coin anti-counterfeiting technology for the public, which can meet the requirements of automatic coin checking of coin machines, and can be fully utilized in the production of ordinary circulation coins, circulation commemorative coins, and commemorative badges.

Description

technical field [0001] The invention relates to a coin, a commemorative coin, and a commemorative badge with half teeth on the edge, and a printing method thereof. Background technique [0002] With the progress of modern industrial technology, especially the progress of electric processing technology, the coinage technology of various countries in the world today has developed to a new stage on the basis of inheriting the traditional coinage technology. However, at present, the edges of coins and medals in various countries are still in the single mode of straight wire teeth or smooth wireless teeth. Printing intermittent half teeth on the edge of coins and medals can improve the manufacturing difficulty and technical content of coins and medals, enhance the public anti-counterfeiting performance of coins and medals, and improve the appreciation and collection of coins and medals. The significance of the progress of medal making technology. [0003] Printing intermittent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A44C21/00A44C3/00B23H7/02
Inventor 魏立营张吉刚应拓刘治旗张晓男
Owner CHINA BANKNOTE PRINTING & MINTING
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