Silk tooth at edge part of coin and manufacturing method thereof

Abstract

The invention relates to a silk tooth at the edge part of a coin. The silk tooth at the edge part of the coin comprises a silk tooth of a single structure and a silk tooth of a composite structure, wherein the silk tooth of the single structure is a spot-shaped silk tooth, a linear silk tooth or a curve silk tube; the silk tooth of the composite structure is a free combination formed by two or more than two materials from the spot-shaped silk tooth, the linear silk tooth or the curve silk tooth; after the arrangement of the adjacent silk teeth, at least one group of silk teeth pattern is formed at the edge part of the coin. The silk tooth of the composite structure concretely comprises a curve multidirectional silk tooth, a spot and line separated silk tooth, an embedded silk tooth and a miniature symbol form silk tooth form. The silk tooth form range is expanded through the silk tooth patterns; the appearance is novel and attractive; the changeful and colorful effects are achieved; the anti-counterfeiting and identification performance is realized. The manufacturing method comprises a sandwich plate splicing type silk tooth module opposite twisting manufacturing method and a silktooth split module sleeve manufacturing method.

Description

technical field [0001] The invention relates to the technical field of edge structure of coin stamps, in particular to a thread set on the edge of coin stamps and a manufacturing method thereof. Background technique [0002] At present, for gold, silver, platinum and other precious metal commemorative coins, circulating coins and common alloy commemorative coins and stamps, in order to prevent counterfeiting, beautify and enhance the sense of touch during use, it is a tradition to make wire teeth on their edges to this day. [0003] Although the edge wire technology has gone through several years, it is technically composed of continuous and single-direction straight lines without fundamental changes. Full tooth spaced half tooth 3 or straight full tooth spaced half tooth. For example: British circulation coins use straight wire teeth on the side, Hong Kong circulation coins use straight wire teeth with side grooves, Japanese circulation coins use oblique wire teeth on the ...

AI Technical Summary

Problems solved by technology

[0005] There are some serious limitations and constraints in the existing wire tooth forms and product manufacturing methods: for example, (1) There can only be one and the same angle on a coin, otherwise it cannot be demolded

(2) The wire tooth must penetrate the surface of the coin, otherwise it cannot be demolded

(3) Helical wire teeth, or helical full teeth spaced helical half teeth and helical half teeth, because they must be demolded in one direction with a spiral, they can only be used on the edge of round coins

[0006] In addition, the existing wire tooth form is fixed for a long time, and its expression form is monotonous, lacks novelty, and lacks artistic aesthetics, which is easy to cause visual fatigue. At the edge of special-shaped coins, it is not conducive to the anti-counterfeiting of special-shaped coins

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