How to Make a Plastic Turnover Box Mold
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1、Types of Turnover Boxes

The turnover box is mainly used to transport various products, so it is also called the logistics box.

According to the different products transported, there are mainly the following types of crates: fruit crate, fish crate, industrial product crate, bottle crate, bread crate, etc.

For the design of turnover boxes for different purposes, we need to consider details such as shape design, superposition effect, load-bearing strength, and production cost.

The following are some of the turnover boxes we have made, which can be used as a reference.

Source: Immould

2、Turnover Box Mold Design Details

1)Design of Cooling Water Circuit
 

The cooling of the turnover box mold is very important. Reasonable cooling system can reduce the deformation of the product and shorten the injection molding cycle.

The size of the diameter of the waterway and the uniform distance of the arrangement need to be precise.

If the diameter of the water channel is too small and the cooling is not timely, the mold temperature will be so high that the product will be deformed, thereby increasing the production cycle and reducing the production efficiency.

Source: Immould
Source: Immould

2)Slide Core Pulling and Ejection System for Turnover Box Mould

 Slide Core Pulling

The structure of the turnover box mold is mostly fixed mold four-slide core pulling. This design can make the surrounding of the turnover box smoothly drawn without scratching the surface of the product, and can also control the size of the mold, thereby reducing the cost of the mold.

Source: Immould

 Ejection System

The turnover box mold is usually ejected by the top plate. According to the actual situation, the design of the ejection system should be as simple as possible to reduce the probability of failure.

Source: Immould

 Gate Design

For the gate design of the turnover box mold, we can choose either hot runner or cold runner.

Cold runners are recommended if return material will be added to the plastic material. The large gate is placed in the center of the bottom of the turnover box to avoid gate blockage.

If the turnover box is produced with new materials, it is recommended to choose multiple hot runners, which can not only reduce the excess runner waste, but also reduce the process of shearing the runner gate.

For the number of points of the hot runner, it is generally 2, 4, 6 or more points into the gate, which is finally selected according to the structural design and weight of the product.

Source: Immould

3、Selection of Mold Steel

The steel of the turnover box mold is generally P20, 718, and 2738, which are more cost-effective.

The steel used for different mold parts of the turnover box mold is also different, and the steel needs to be selected according to the cost budget of the mold.

Source: Immould

4、Requirements for Processing Equipment

The processing accuracy of the turnover box mold is not low, especially the processing of the core, the cavity, the four-slider and the stripper. Good equipment processing is required to make assembly easier and avoid flash and scratches.

Source: Immould

5、Production Experience of Turnover Box Mold

FOWMOULD has made hundreds of turnover box molds. FOWMOULD has ample experience in giving advice on product design, reviewing mold design, controlling mold processing, and comparing samples and designs.

Here are some crate molds made by us, FOWMOULD.

Source: Immould

6、Turnover Box Mould Price

The price of the turnover box mold depends on the size of the product, the choice of steel, and the brand of the hot runner.

Take the turnover box of 500x350x300mm as an example. The size of the mold is about 900x750x700mm, and the mould weight is about 3.5Ton. And the required injection molding machine model is 650-800T.

How to Estimate Injection Molding Cost? The Complete Guide

Get in touch

Please contact us using the form below or emailing (harry@fowmould.com)