Rotary die-cutting die roller directly formed by laser cladding

Abstract

The invention relates a rotary die-cutting die roller directly formed by laser cladding, and provides a die roller of a rotary die-cutting device. The die roller comprises a roller body on which a blade is arranged; a cladding layer, a transition layer and a layered structure of a base body are formed on the roller body from inside to outside in a sequence by the laser cladding process, wherein the cladding layer is used for forming the blade; the transition layer is connected with the blade and the base body; the roller body is of a hollow structure. According to the die roller formed by the laser cladding process, different materials can be subjected to metallurgical combination; the dilution rate is small; the hardness and wear resistance of the blade body material are maintained; the flexibility of the base body material is remained; the blade body material and the base body material can be combined well; the section of a blade body is of a near net shape, so that the later precision processing workload can be reduced; the cladding track can be digitally controlled; any complex blade curved line can be pre-designed; the roller body is of the hollow structure so that the heat dispersing performance of the base body is improved, and the mechanical property of the blade can be improved; in addition, the weight of the die roller is reduced, and thus the rotary inertia of the die roller can be increased.

Description

【Technical field】 [0001] The invention relates to the technical field of die-cutting processing, in particular to a molding method of a die roller of a rotary die-cutting device and a blade thereof. 【Background technique】 [0002] As a traditional and classic manufacturing technology, die-cutting technology has been widely used in more than a dozen industries such as printing, packaging, mobile phone digital accessories, health and medical supplies, and electronic labels. Due to a series of problems such as poor safety, low automation procedures, and high energy consumption, traditional flat die-cutting equipment is being eliminated by the market, so the market for rotary die-cutting equipment is expanding rapidly. [0003] The core component of the rotary die-cutting equipment is the die-cutting tool holder, which is composed of a die roller, a round roller and a die frame. Wherein the die roller body is manufactured with a knife edge according to the shape of the processe...

AI Technical Summary

Problems solved by technology

There are two major problems in the milling forming process for the manufacture of tools with relatively large diameters: 1. During the overall heat treatment, due to the complex structure of the roller body model, the wall thickness of the model is very different from the thickness of the substrate, and the material of powder metallurgy high-speed steel or cemented carbide is large. Diameter rolls are prone to severe deformation, coarse grains in the internal structure, cracks and other problems during heat treatment and quenching; 2. The overall milling process has large cutting volume, low processing efficiency, and serious waste of materials

The main problems in the insert molding process are: 1. It is difficult to realize the gapless insert assembly technology, and it is difficult to maintain the accuracy under long-term high-speed working conditions; 2. The size adaptation range is narrow, because only large-size mold rolls have It is possible to divide the edge curve into several inserts and use insert molding

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