Design Automotive Tank Mold

Bluestar is specialized in manufacturing automotive plastic part molds. With over 20 years of manufacturing experience, Bluestar’s manufacturing team is skilled, experienced and can solve many problems in the manufacturing sector, particularly the company has built an R & D center for technology development under the direction of General Manager. With the efforts of all staff and management board, we have customers around the world, especially the major automobile manufacturers, that accepted and rated highly our mold quality, simultaneously established long-term relationships with us. One of the mold type that our partners appreciated and ordered quite frequently is Automotive Tank Mold.

• Problems in automotive tank mold manufacturing 

A product being produced which is unlike the original design will greatly influence the usage quality, and so it is the failure of production. In the manufacturing industry of automotive components, quality assurance requirements are very important, and always adhere strictly to the provisions and requirements. Production of automobile plastic parts is no exception, especially when the plastic parts account for a large number of products on an automobile.

For automotive tank, the key problem that the manufacturers should pay attention to is the smooth surface (flatness) of the tank, as well as the straightness of the edges. To get a perfect automotive tank, its mold has to be ensured with all the necessary criteria. Products that are deformed will directly affect their functions. The control of the flatness of the surface smooth tank is often the key problem in mold manufacturing. The mold manufacturers must calculate the design and manufacturing so that the finished tank must be flat, and not warped. This is the focus of the design and manufacturing!

• Ensure the flatness and the size of the tank

To ensure flatness as well as the size of automotive tank, we can follow the steps below:

Before designing, the manufacturer must analyze the mold-flow to find the optimum points of the product.

1. From the mold-flow analysis, we can know the positions that might be deformed and predict the quantities. 
2. Design pre-deformations, pre-change the amount of deformation properly (on 3D drawing). 
3. Usually, we will make 2 cavities tools and use valve gate hot nozzle. 
4. The inner side of product should be made a separated insert. At the same time, predict deformation according to mold flow, which makes it convenient to handle part side separately. The appropriate thickness of mold core (cavity & core) is 2 mm, which makes it convenient to rework on the deformed part line after mold trial. 
5. Design several groups of water lines according to mold flow in order to modulate the deformation by using different mold temperature during injection molding. 
6. Use injection molding machines with good performance to mold trial. 
7. Modify mold and predict the second pre-deformation according to T1 results (the wrapping degrees, the deformation of the width, tolerance of location dimension of assembly structure). 
8. Because the middle part of mold core is designed for a separated insert, it can easily modify the deformation of the part side by using wire cut. 
9. Start to modify the dimension of other structural locate pin, after modifying the wrapping deformation and meeting the requirement. Normally, we only need to modulate the height of slider, so sliders should be designed to modulate easily ones when designing.

Visit our website to see more our case about designing automotive tank mold: http://bluestar-mould.com/EN/Case-Tank-404.html