In-mold heating technology - as an advanced injection molding process, it has long been used by other countries. Because the mold has many advantages, such as the automatic separation of the mold gate reduces the dependence on people, the mechanical operation reduces the influence of the human quality of the product, the automatic production of the product reduces the molding cycle and improves the production stability, so the development of foreign countries is relatively fast, especially in Europe and the United States and other countries with high labor costs. How to choose in-mold heat in mold design?

Although the nozzle material is a part of the molding material, it does not belong to the product, so we should understand that when designing the mold, for how to choose the mold heat, can not simply consider the buyer to buy a set of mold heat system installed on the mold success, we first consider the appearance of the gate separation when designing the mold, It is also necessary to consider the stability of product production, and the consistency of multiple products should be considered after the hot gate. Ideally, this is the case, but in practice it is difficult to achieve this effect. In the mold making process to the final use of the mold and mold maintenance and after-sales service, there is a close relationship. Below, a simple description of how to choose the in-mold heating system in mold design:

· Pay attention to the arrangement of cavity number and layout on the mold. Because the number of mold cavities and the arrangement of the layout have a great impact on the balance of the ultra-high pressure micro cylinder in the mold. It is best to choose an even number of cavities and arrange them symmetrically.

· Pay attention to the thickness of the mold kernel and the mold kernel plate, because the cutter assembly in the mold is placed in the mold kernel, and the micro ultra-high pressure oil cylinder is placed in the mold kernel plate, the mold kernel and the mold kernel plate are too thin and too thick, and the cylinder and cutter assembly cannot be placed too thin, and the thickness will increase the weight of the mold. Therefore, it is necessary to communicate with the mold heating manufacturer before introducing the in-mold heating system. It is easy to determine the thickness of the die kernel and the die kernel plate.

· Limit the minimum number of cavities. Due to the limitation of the minimum cavity distance of the hot parts in the mold, it is necessary to check the cutting tool assembly distance when designing the mold with a very close cavity distance.

· Interference of the thimble/insert/waterway on the mold. The installation of the hot parts in the mold requires a hole in the mold, so it is necessary to take into account the absence of thimble/insert/water interference around the hot parts in the mold.

· The maturity of in-mold heat products. A new in-mold heat product takes a longer time to perfect, so choose a brand with good maturity, relatively popular and a long history of application.

· Mold heating system gate appearance control, an ideal mold heating system should choose a cylinder of all knives separate control to ensure the heating effect of the gate.

· Consider technical support and after-sales service. In addition to first choosing a reliable in-mold heating system, users should also consider whether they can get timely and effective technical support and after-sales service in case of any problems with in-mold heating.