How to make plastic bucket mould

1. Material of the plastic bucket.
   PP PE
2. The material of the bucket mould.
   Choose 718 steel is most popular for bucket mould, long mould life and god prefermance, high-grade forged tool steel relatively free fo defacts; it is available in a prehardened steel. It can be textured or polished to almost any desired finish and it is a tough material. Also P20 Iis another wide used bucket mould steel,300000-500000 shots mold life avaliable,  And of course if you made bucket mould before, you will know that, bucket mould often inserted with Becu(beryllium copper) for reduce cooling time, is used to meed specific requirements to meet tool life and cost. Where for higher degree of the mould ,you can choose 2344 with becu insert, and S136,very good choice, but expensive.
3. Bucket mould runner system.
   Plastic bucket mould usd hot runner is mainly point gate and direct gate, for the handle hot runner is better to do more cavities. 
4. Bucket mould ejection system.
   Usually ejection by stripper plate and air.

How to make design of plastic bucket mould

In order to produce high quality barrel mould, attention should be paid to the details of many links, and the most important of these is the following three points:

A high-quality mold structure is a premise for a qualified plastic bucket mold. We attach great importance to analyze mold structure, including demolding draft angle, the epitome of product surface, gating system design, exhaust design, cooling system design, etc.The main problems that may easily occur will through trial and error during the mold structure design.

In order to improve the mold life and product quality, we increase the mold steel hardness through heat treatment. The steels we commonly use are H13(48-52HRC), 2316(45-50HRC) etc.to prevent mold eccentric, we use whole piece of steel to make the bucket. The cooling system is very important. We adopt single loop cooling way and setup even distribution water channels as much as possible. All small sliders will be nitrided to increase the hardenss.

It is important to keep maintenance for the bucket moulds. We should check and make sure the the water channels and air circuit unlocked.

Cooling system design is a relatively cumbersome work, namely to consider the uniformity of the cooling and the cooling effect, also the impact brings to the overall mold structure, determining the exact location and size of the cooling system; and cooling for key positions such as moving plate or the inserts, side sliders as well as side cores;standard cooling element design and the selection of the cooling standard components. 

 

Bucket mould making