How to make perfect crate mould?

Plastic crates helps to complete generalization and integrated management of logistics containers, which is a must for modern logistics management of production and distribution enterprises.

Conventional plastic crates

Glue position is about 1.5~3mm

Use analysis: Mainly based on transportation, distribution, storage, distribution and processing of plastic boxes (boxes) in factory logistics. Reusable.

Product technical points: Thickness of rib is relatively close to thickness of rim, so shrinkage requirement on the surface of product is relatively high.

Crate mould features: Four-slide cylinder action + stripper plate is linked, and spring-loading mechanism must be used for core insertion.

Crate mould features: Most gates are edge gate, thicker exhaust and cooling system needs to be good.

Design points for Crate mould

High efficiency points for crate plastic molding :

A. In today’s mature market, facing cost transparency, there must be innovation in the production of mold technology to fill system, special hot runner system assisted molding, so cost of plastic crates will decrease in production efficiency, HDPE is recommended on selection of plastic materials. Material melt index is preferably around 6.

B. Crate mould must have a screw speed of more than 400 on selected injection molding machine. Mold and product release systems mean a return on benefits.

C. Circulating cooling system achieves optimum results, so injection speed may be as high as 800 mm/s (set speed) when injecting plastic crates. And given cooling properties of melt, a suitable cooling system must be available at the beginning of injection. Therefore, production of crate plastic molding must use more than 2 times of quenched and tempered steel materials, so that crate mould can stand test in high efficiency production.

D. Crate plastic molding must have high-precision mold clamping, parts adopt DME standard, insert and guide prevent deformation and misalignment, so choose reasonable guiding design to improve wear resistance, reasonable insert material to improve life of crate plastic molding in high efficiency process.

E. Ejection mode of crate plastic molding is preferably designed to automatically eject mechanical system, draft angle is increased as much as possible, so that when mold is opened, ejection is smoother and more efficient, automatic mold release is realized. Therefore, design of crate plastic molding is very important, ejection action at the time of mold opening determines efficiency, thereby reducing cost.

F. Bronze is inlaid on necessary part of mold. Best features of bronze help mold to cool quickly, which helps to increase efficiency of mold by more than 2 times.