A Brief Description on How to Custom Mould Efficiently and Successfully

If you want to get a good custom mold, many inexperienced customers normally like to find some professional mould manufacturers. But even if you find a good mould maker, you can’t express your needs well or you can’t have a good communication with the company, that’s also can cause bad results. So custom mould is also need some skills.

How to custom mold successfully? What’s problems will appear when custom mould? In custom mould process, which content must be discussed clearly? 

We will offer you a chair mould case to explain how to custom a good chair molds successfully, and what’s problems we can avoid on custom mold project.

Product:

If you want to custom a good mould, firstly, we need to know the product clearly. Such like whether the mould design is reasonable, whether the product on market can bring the profits, etc. How to save cost on the same product, for example, we can make the mould size smaller, use a smaller machine to manufacturing or the mould can use hot runner system to reduce the material cost and shorten the cycle time, etc. For plastic chair, the most important except the style, we also need to consider the chair strength, stacking condition, flash and the design is reasonable or not.

Mould design

Mold design rationality, will bring us great return benefit. Many times, we are wasting money on the mould because of the lack experience. 

The below information is the key point that we need to treat very seriously:

1.      Mould structure the simple the better

Because, for the simple mould, there will be less rub during the mould operation, then the mould life will be longer. When take chair mold as an example, some customers think the more interchangeable back inserts the better, and it will be excellent if all the chair back inserts and sit inserts can be interchangeable. However, that will make mould testing very complicated, and you will have a lot of trouble in your future mass production.

2.      High requirements for cooling system

High quality cooling system design can help you a lot on shorten the cycle time that obviously brings directly benefit and effective to the customer. Simpler and better than you hire a wise operating engineer.

3. The injection gate chooses!

Sometimes it will cause many problems from ignoring the injection forming on design, it is not good if only considered about the surface while not the mould. As we know if the mould with hot runner system, it without the waste material and improve the injection cycle time, but in order to reduce the cost that we will use the recycle material, while it with much impurity is not good for the hot runner. For chair mould, if adopt the famous brand such as YUDO, it’s a waste of the cost. If adopt the common hot runner system, they may not solve the problem, so even if they used the filter, also can not ensure the quality is 100%. In this way, we can choose the cold runner system, if design well for the injection gate location, it is easy to break off the tail and not leave the marks.

Machine selection

To custom mold is not only related to injection molds, actually injection molding machine selection is also a key point of a customized mould.

If you have enough budgets, please consider to choose a greater tonnage machine. A great tonnage machine will have stronger clamping force, it is very easy to solve the flash problem. If you are not able to choose a big machine, definitely you may face a lot of problem during long term manufacturing.

In order to avoid such problems happen, customer have to provide the mould making company detailed machine parameters.

This is our decades experience for clients’ customize mould, if you have more experience and better suggestion please contact us for exchange ideas and mutual-improvement. Sino Mould Co., Ltd one of the biggest mould company and a professional mold custom factory.

How to custom molds and establish plastic molding production line

When you want to built a new factory for plastic molding production , or you want to join the plastic product manufacture ,the potential investment ,you should considered the following two points.

1.      The product we focused on has the good market and you have already got the client resources? 

2.      How to reduce the risk when you just start the investment and you don’t know the money you put will back or not.

For the first point, it is easy for you to get the answer .You only need to do the market investigate and do some promotion.

For the second one, you should prepare many things .Such as,

Design plastic product, find out the good supplier for the molds to design the mould and make the mould, find the suitable equipments you need for the plastic molding production line, get the factory, find the engineer who can help you to built the factory and function the equipments with good conditions ….

Maybe the biggest problem you will meet is H0W TO CUSTOM MOLDS and HOW TO ESTABLISH THE PLASTIC MOLDING PRODUCTION LINE by yourself.

To CUSTOM MOLDS,

You should be professional in molds, injection, design … it is not easy.

However, you can find a good CUSTOM MOLDS company or CUSTOM MOLDS manufacture to help you to solve this headache problem.

You can show them the sample and they will finish the following steps for you:

Quote the cost, design the product, do the mould design, make the molds, test the molds, send you the testing sample, ship it to you the molds.

What’s more, you should start to find the equipments for the production line before the mould shipped to you.

All the professional CUSTOM MOLDS Company will need the equipments information; so that they can design the molds according to the equipments you have and help you to reduce the cost in production.

Then, you should prepare the equipments for the plastic molding production line in your factory.

Many types of equipment you should buy for a molding production line:

1.      injection machine

2.      Auxiliary equipments for plastic molding ,such as autoloader ,chiller ,mold temperature controller ,crusher ,cooling tower ,dryer …

3.      Robot, maybe you want a fully automatic production line, the robot is necessary.

4.      Factory devices, for example, drive, water system, electricity system, the store, the drainage system and so on.

If you don't have any experience in this field and you need the TURN KEY PROJECT SERVICE, maybe you can find a professional plastic molding company in China.

We can recommend you a company who can offer MOLDS CUSTOM, PRODUCTION LINE TUREN KEY SERVICE manufacture in China, named SINO HOLDINGS GROUP.

Finally, hope all of you will have a bright business in the year 2013.

How to Choose Best Quality Plastic Injection Mould

There are plenty of injection Mold Company in China, especially gathered in Guangdong province and Zhejiang province. Then how to customize good quality plastic injection mold? How to choose most suitable mold company?

Mold flow analysis

Before detail mold design, should have mold flow analysis of plastic part. By analyzing material flow direction and path route, check whether injection gate reasonable or not, or there is any flowing imbalance or other problems.

  

Professional mold design

Mold design is the basic, also it is the first important item for mold manufacturing. It must be reasonable, based on exact plastic part’s requirement, then to have the most appropriate design. For example, PVC injection molding, if plastic part small, better to use valve gate system or submarine gate. For large PVC part with thick wall, then better to use fan-shaped gate type.

Mold tooling

Good quality injection mold related to precision mold tooling. For example, medical syringe barrel mold, it has strictly requirement of mold core part’s verticality, almost there is no demolding angle, as require sealing the best between barrel and gasket. Here best to use Japanese brand Sodick precision wire cutting machine, mold dimension can be controlled within 0.005mm. Additional, Fidia three axis high speed CNC machine from Italy, Agie Charmilles EDM machine from Switzerland, are most suitable for tooling high precision injection mold for medical parts, packaging parts and automotive parts. When you hesitate to choose which mold company, to check their tooling equipments first.

Mold installation

After all above items smooth finished, then comes to labor works. Mold assembling and installation should be done carefully, workers should pay attention to this part, make sure every spare part has been assembled and in most suited location without any damage. Also make sure under safety condition.

Mold adjusting and testing

If injection mold have any problem, then it can be directly reflected on plastic parts. Mold testing is important, as custom mold company and client will have fully understand, then know how to fix the mold or next. So at first, all related auxiliary equipments should be well installed, like air blow system, water cooling system, etc. Check its reliability, then add plastic material to test the mold. At the same time, injection molding condition should be suitable.

Mold maintenance

Suitable maintenance of injection mold is important. This will prolong mold life time, also you may have the idea of this injection molds company, how their attitude of the mold manufacturing.

Sino Mould is the world’s leading plastic molds manufacturer in China

Plastic molds type

Plastic molds includes die-casting molds, stamping die moulds, extrusion blowing moulds, blowing molds, thermal forming molds, thermoset molds, hollow moulds , and injection molds, etc.

Sino Mould is the world’s leading plastic molds manufacturer in China. We are specialized in making various kinds of plastic injection molds with 20 years injection molding experience, and already gains good reputation from the world-wide customers.

Plastic Injection molds mainly include two plate mold and three plate mold. When classification by the product function, plastic molds can be classified to commodity molds, packaging molds, auto part molds industry use plastic molds, home appliance part molds, medical use molds, bi injection mould, gas assisted moulds, stacking moulds, baby use mould, etc. In details, it consist of IML moulds, thin wall moulds, bucket molds, crate moulds, basket molds, food container molds, cleaning tool moulds, perform moulds, syringe mould, chair moulds, pallet mould, bin mould, bumper mould , etc.

Plastic molds basic structure

Plastic molds structure main consist of molding injection system, cooling system, ejector system, return system, hydraulic system, heating system, hot runner system, etc. In other words, plastic main parts are mould base, mould core, mould cavity, ejector parts and some spare parts. Such as, fixed clamp plate, moving clamp plate, support plate, ejector pin, stripper , location ring , nozzle, spare block , ejector plate, sprue bush , stop pin , etc.

Plastic molds production progress

When customer places their order in our company, we will have more than 15 employees working on this project. Sales engineer and project manager in charge of the project arrangement and checking the progress.

The first step is product drawing. The sample from customer will measured in our inspection center by three coordinate machines. Product designer design the drawing according to the sample and customer’s special requirement.

As soon as the product drawing confirmed by customer, we start the second step-- mould design. Mould designer will analysis the mold structure, such like point the position of most reasonable parting line, the location and configuration of water channel, etc.

When they finish the mould design, we will have a new mould meeting, and all the related engineers will attend the meeting. Sales engineer convey customer’s requirement on the mould to all of them, then we discuss the important point of this project. After the mould design checked by our chief engineers, and confirmed by the customer, we start the third step.

We buy the mould steel from the company who supply local steel and import steel. The mainly steel used for mould cavity and mould core is S136, DIN1.2311, DIN1.2738, 718H, DIN1.2344, H13, P20, etc. Different steel is used to different mould part. After received the steel, is CNC milling rough machining, heating treatment, EDM, wire cutting, turning-lathe, grinding, deep hole drilling, carving, fly-cutter, polishing, mould testing, texture, and mould assembling.

The last step is mould precision inspection. We have own inspection center in our company to make sure every part of the mould is qualified.

What is a qualified plastic molds?

As far as I know, a qualified plastic mold should be high precision, qualified mould should have long mould life under your correct maintain and operation. Simple mould structure is always better to the mould life. A good plastic is that can be working in long term period and do not need any big modification.

Sino Mould is a responsible plastic molds manufacturer; you can custom the best plastic molds from SINO.