Mold, various molds and tools needed for industrial production. Generally speaking, it is a tool used to make molded articles. This kind of tool is composed of various parts. Under the action of external force, the blank becomes a tool for making parts with specific shape and size. Different molds are made up of different parts. It is mainly through the change of the physical state of the material to achieve the shape of the object processing. It is known as the "mother of industry". Any commodity is made by mould, it can be said that there is no production without mould, which is widely used in the forming process of products in various industries
For example, our common products such as TV sets and other household appliances, mobile phones, telephone shell and other communication equipment are produced by injecting plastic heating software into the mold for cooling and forming, and the electric rice cooker is also pressed into this shape by a metal plate with a mold. The die has a specific contour or cavity shape. The mold is a precision tool with complex shape and bears the expansion force of the blank. It has higher requirements for structural strength, stiffness, surface hardness, surface roughness and machining accuracy. The development level of mold production is one of the important signs of mechanical manufacturing level.
The cost of solid mold manufacturing is generally very high, a large set of mold are more than 100 million or even several million, especially in the medical industry, millions of molds are very common. If there are unreasonable structure or other problems in the process of installing the mold, the loss will be great. Therefore, generally, the appearance, structure and function should be confirmed with the hand board first, and then the mold can be opened for mass production after confirming that there is no problem.
In some places, it is also called "first board", that is, the first model of a product. In Japan, it is also called "handmade". The English translation is "rapid prototype". Prototype is the first step to verify the feasibility of the product. It is the most direct and effective way to find out the defects, deficiencies and defects of the designed products, so as to improve the defects pertinently. Until the deficiencies can not be found from the individual prototype model, it is usually necessary to carry out small batch trial production and find out the deficiencies in the batch to improve.
Usually, a product that has just been developed or designed needs to be made into a prototype. The finished product can't be perfect or even can't be used. Once there is a defect in direct production, it will be scrapped, which greatly wastes human and material resources and time. However, there are a few samples in general. The production cycle is short, and the loss of manpower and material resources is small. We can quickly find out the shortcomings of product design and improve it, so as to provide sufficient basis for product finalization and mass production.