HOW CAN I SELECT A SUITABLE INJECTION MOLDING MACHINE?
Generally, customers in injection molding industries for years are equipped to judge and select by themselves suitable injection molding machines that fits them. But under certain circumstances, customers may need the assistance of the manufacturer to decide which specifications will meet their needs. Sometimes, they may ask if the machines of the manufacturer could produce the products they have in mind, which they merely have a concept or sample, or they would ask which model is suitable. Also, some of the products may need special devices, such as accumulator, close loop, injection compression to match with the selected unit to manufacture their products efficiently. Hence, it is of vital importance in determining what type / model of machine will serve their needs best. The following are information for your reference in making a decision.
Generally, the main factors that affects the selection of injection molding machine include: molds, products, plastic material, molding requirement , etc. Therefore, before proceeding with the selection, the following information must be collected first:
Mold size ( width, height, thickness ), weight and special design.
Type and quantity of plastic material to be used ( single or multiple materials ).
The outer dimensions of the product ( length, width, height, and thickness ) and their weight.
Molding requirements, such as quality, manufacturing speed, etc.
After obtaining the above information, follow the following steps to selected a suitable injection molding machine:
Select the right model: Decide the type and series of machine base on the products and the plastic materials.
Accommodate:Based on the dimensions of mold, determine whether the distance between tie bar, mold thickness, min, mold dimension, and mold plate dimensions are suitable or not, to confirm that the machine can accommodate the mold.
Retrievable:Based on the mold and product, determine whether the mold opening stroke and ejecting stroke allow the product to be retrieved.
Lockable:Determine the mold locking force based on the product and plastic material.
Sufficient Injection:Determine the volume of injection from the weight of products, and number of mold caves, and select suitable screw diameter.
Good Injection:Determine the "Screw compression ratio" and "Injection pressure" from the plastic materials.
Fast Injection:Checking the injection rate and injection speed.