Key Word: Taili Plastic Machinery; Taili Plastic Machinery-Capacity Improving Expert; Efficient; Stable; Unsmooth Surface
There are a lot of online adjustment tutorial and debugging method of injection molding machine. If you strictly follow the online tutorial step by step, injection molding product manufacturer will get completely confused. What can we do to make the product surface of no shrink shape and high surface precision?
Chongqing's Mr. Qian Mr. Qian is a manufacturer of automotive optical accessories. The material used for injection molding optical parts is PMMA, that is, acrylic. The refractive index is generally about 0.9, slightly lower than that of PC lens, but PMMA spectacle lens is more common applied in daily life.
The light guide strip of automobile is generally made of PMMA material (acrylic). Due to its usage for light display, the requirement of surface accuracy is particularly high. The surface accuracy here includes shrinkage, weld line, unevenness, unsmoothness and so on. Mr. Qian's confusion is that he has just entered the industry. His friends say that whether the industry can continue, how the products and the profits can be, all depend on whether the master he employs is good or not. If the technician is of great ability, it is inevitable to make money; if the master is not responsible, everything will end in nothing.

Mr. Qian is very distressed because the surface accuracy of the products can’t meet the appropriate requirements. According to the technician, he has been checking the problems of the injection molding machine and the mold, but no obvious effect is made.
The following 3 steps as followed can solve Mr. Qian’s problem easily.
1. Non-Mold Injection
After the injection molding machine storage is completed, you can use the non-mold Injection to check whether bubbles in PMMA raw materials. If yes, check the storage back pressure and the screw of injection molding machine to ensure that there are no bubbles in the raw materials during non-mold Injection.
2. Slow-Fast-Slow Injection Inspection Mold
Inspect the mold is in 3 sections of slow nozzle, fast filling and slow pressure maintaining to see whether the flow channel of the mold is uniform, whether the product can be further filled in during pressure holding, and whether the surface polishing of the mold meets the requirements.
3. Injection Response Speed
On the premise of completing the first two steps, if the surface precision of the product is still not ideal after full pressure holding, the reason can be concluded to be the injection response speed. In the process of filling PMMA lens, the faster the injection response speed is, the less cold material will enter the mold cavity, and the surface precision will be higher.
Mr. Qian's products after the above three-step investigation, the problem really lies in the injection molding machine. With the same mold, the same process, only by change to a new injection molding machine can the accuracy of the product surface be greatly improved.
Taili Plastic Machinery always keeps in mind that what a good injection molding machine factory should do is to help improving the capacity and boosting the profits, rather than offer the similar products the customers need. This is also what Taili Plastic Machinery keeps doing.
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