Welcome to Injection Molds China, your one-stop destination for custom-made tooling services in China. We specialize in designing and manufacturing high-quality injection molds, which are used in various industries, including automotive, medical, electronics, and consumer goods. Our team of experienced professionals is dedicated to providing our customers with the best possible solutions to meet their unique tooling needs. Whether you need a prototype mold or a large-scale production run, we are committed to delivering exceptional quality and value. Learn more about our custom-made tooling services and how we can help bring your project to life.
” It is a good idea to invest in an accurate planning at the start of the mold making process than to pay for costly rework or corrections “
We have divided the mold making process in 4 basic steps:
Triple-c’s mold making process is a collaboration between several departments: the mold design department, purchasing, project management and the tool shop itself, and last but not least in this stadium we involve the injection molding department.
The tooling process starts with the purchasing department, that is assigned to buy the manufacturing components needed for making the entire mold, comprising toolsteel, jigs, cutting equipment, copper electrodes, new machiney cnc, ejector pins and gate and runner systems.
Our company has their own mold making facility in the same building as the mold designers and close to the injection molding machines.
Quick and transparent communication between all these department are essential.
The next material to prepare is the mold base. A mold base encloses the core and cavity parts of the mold itself and helps absorb the pressure from the injection process. The mold base is often made of a softer steel than the core and cavity because it’s cheaper than the harder steel used for those inserts.
And while we’re on the subject of mold bases, let’s talk about the interchangeable sort. Mold bases are often made in standard sizes that can hold a number of different mold cores and cavities. If you have a mold base available that was used for other projects, then you don’t need to spend the time or labor to make a new one. Some minor adjustments to that existing base may be needed, but overall, using an interchangeable base saves you a lot of time.
In this step, it’s a good idea to spend a little extra to get core and cavity inserts that are already the exact sizes you need — it saves time that would otherwise be spent grinding it down to get the right fit. Those sorts of adjustments can take days you can’t afford when your development cycle is on a tight deadline.
Once the CNC programming is done, it’s time to order the copper material for any EDM (electrical discharge machining) required by the design. This copper will be used to make the electrodes for sinker EDM.
To finish off the mold materials list, the next step is to source all of the required standard (off-the-shelf ) components — like screws, nuts, and bolts — plus anything else that’s on the BOM and hasn’t been obtained yet. This is also the time to order the plastic material.
Once the material arrives, it’s time to start machining the mold. The core and cavity are machined from the prepared steel blocks, and the process starts with rough CNC machining using larger cutting tools to cut a rough outline.
Some manufacturers use less accurate (and therefore less expensive) machines to do this rough machining before moving the inserts to a high-precision machine. However, in recent years CNC machines have become more precise and less expensive, so the cost savings from using different machines to do rough and finishing cuts are now minimal.
We combine the rough and finish machining into one step and do both on the same machine, so they can make the cavity, core, and lifter/sliders in only a few days.
The copper blocks are also machined at the same time as the steel to ensure the EDM electrodes are available immediately to finish the mold making in the desired time.
When all of the components are completed, the next step is to fit, assemble and test the mold. Eventually, all of the tooling component parts must fit together precisely to obtain an aesthetic result on the product and for the mold to not wear out rapidly or break.
The mold must be fluid tight to contain the molten plastic. Yet, at the same time the mold must have venting features added to allow the air to escape.