Pattern cutter, its processing methods and moulds

Abstract

Disclosed here in the present invention is a pattern cutter, including a base and cutting blade. The cutting blade is located on the base. The blade forms the shape of pattern to be cut. The said base and cutting blade are of one-piece structure, which is machined to shape at one go through die-casting process. A method for processing such a pattern cutter, which directly utilizes mould to die cast the base and blade that are joined together. The said cutting blade forms the pattern shape that requires to be cut. A mould that is applied to the aforesaid processing method, inside the mould there is arranged a cavity for blade forming purpose. The said blade-forming cavity is of triangle or combination of triangle and rectangle or combination of triangle and trapezoid. The depth of blade-forming cavity is greater than or equal to 2.5 mm. The included angle at the sharp end of the blade-forming cavity is smaller than or equal to 60°. The present invention is characterized by simple and rational construction, easy to manufacture, low cost, high product accuracy and good consistency, with a wide range of adaptability and better market prospect.

Description

TECHNICAL FIELD [0001] The present invention relates to the pattern cutting technique and, more particularly, to a pattern cutter, its processing methods and moulds. BACKGROUND ART [0002] The traditional paper-cutting handicrafts are a kind of work of art gaining immense popular favor. With a large variety of designs or patterns and high value of artistic appreciation, the paper-cutting handicrafts are very suitable to the kindergarten education of children. Abroad, these kind of paper-cutting products are widely used for children education. In the United States, for example, the paper-cutting products are very popularized. The paper, plastic pieces, rubber pieces or similar materials are generally cut into letters, cartoon, animals or human-shaped patterns for cultivation of children's cognitive ability and discrimination. But, the production efficiency is relatively low by using traditional hand paper-cutting method to make paper-cutting patterns, with a poor consistency in design...

AI Technical Summary

Benefits of technology

[0018] In comparison to the prior art, the present invention has the following advantageous effects. (1) Simple and rational construction. This pattern cutter comprises a base and cutting blade of one-piece structure. The construction has been further simplified, whereas the existing pattern cutter that needs the base and cutting blade to be machined separately, then embedded and assembled. And as compared with the prior art, it is more rational and there will be no such accidents that the blade breaks loose from the base due to improper installation. So, it is safer in operation. (2) Easy to make and low in cost. The present invention utilizes die-casting process to produce pattern cutter, with a high production rate. Generally the output is 240 pieces per hour per unit. The use of the present invention can greatly increase work efficiency, reduce product cost and improve economy efficiency. (3) High product accuracy and good consistency. The present invention adopts a mould in production. So long as the machining accuracy of the mould and corresponding production conditions are guaranteed, the products that are turned out can have rather high processing quality, with less product errors and good consistency. (4) Good adaptability. According to the present invention, the pattern cutters for cutting the different shapes of patterns can be formed only by changing the shape of core seat in the mould, with a wide range of adaptability.

Problems solved by technology

But, the production efficiency is relatively low by using traditional hand paper-cutting method to make paper-cutting patterns, with a poor consistency in designs, hence it is not suitable for mass production.

The existing method to form such blades is generally to bend them by hand, leading to extremely low production efficiency and poor processing accuracy.

But, the technological process, through which the cutting blades are firstly machined and then assembled to a pattern cutter, will inevitably increase the processing and assembling steps, thereby the required materials and labor cost are still relatively high.

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