Our mold making room is fully equipped to manufacture custom plastic molds and machined steel parts in-house, averagely we can supply 15 sets of fully equipped mould making room of china injection mold factory molds per month, lead time is around 25-35 days depends on the complexity of mold structure.
Our mould making capacities and experiences include:
Food Package Industry
Industrial Package Field
Home Appliance Industry
House Hold Industry
Medical Industry
Automobile Industry
Livestock Industry
Cosmetics Industry
PVC pipe Fitting Industry
Mould steel we frequently used:
H13, 718, 2316, S136, 2738, P20 etc.
To lower down the cost and increase the efficiency for your companies, we pay special attention to injection mold making process control and manufacture correctness, as less as possible rework or mold trail out makes cost and lead-time as less as possible.
CNC machined parts of plastic mould
we also manufacture precision machined parts of plastic mold, 0.01-0.02mm proposed to leave for final fitting in customer's own mold factory, we are able to do this in a short notice to meet your company's time table for their whole mold project, normally the delivery time we offered is 10-18 days or even less depends on the ordered quantities. Harden treatment steel would need a little longer time.
Mold Making Process
A mold project includes design, steel preparation, rough machine, precision machine, fitting and mold trail.
1) CAD design
The design is started with a 2d layout, basic mold design information will be present, such as mold size, gating way, parting line, ejection way, cavities layout, mechanical design, accessories used, steel of each component used, etc. 3D design in details and NC programming will follow after the 2d design is approved by the customer. Depends on the complexity, a complete mold design would need 3-7 days. Some of the complex projects require mold flow analysis or frequent updates of custom design, it could take much more time.
2) Mold base, steel and accessories preparation
Mold base and steel can be ordered immediately after design get confirm, accessories especially hot runner system could take much longer time to get back, all of this procedure need to be track closely if you don't want to cause any delay on next step.
3) Rough machine
The steel need first to be sized, milling, drilling, lather are the main process way to get the rough shape or the cavity /core. Normally 0.15-0.3 mm steel left for precision machining later.
4) Heat treatment
After rough machining, internal stress would be created during machining, do heat treatment to get certain hardness and internal balance, such as 1.2343, 1.2344, it usually need to be harden to HRC40+, some of the steel don't need it, like P20, 1.2312 etc.
5) CNC precision machining
To get designed dimension, the CNC process of precision machining is much slower than rough machining, also the steel hardness is much higher.
6) Wire cut and EDM
Wire cut is a process specially for holes (ejector pin holes, lifters, inserts), EDM is particularly for some of the area that can't not be machined by normal way, either too small to allow the cutting tool work properly, or it's too narrow to get there. Injection mold trial running
7) Finish and fitting
After all the components are finished and prepared, mold maker collects them all and assemble them by following the design drawing, it's a job rely heavily on experiences and skills, some of the part might need to be polished to fit, or the core or cavity have specially requirement for surface finish, such as texture, polish, engraving.
