Each plastic product has a plastic t molding, the size and texture of the mold depends on the size and shape of the product. In this article, we take a closer look at manufacturing plastic injection molds.
Nowadays, the concept of plastic t molding has become quite familiar to people in the mold industry, or even to those who use the product, they understand that all plastic products are molded and pressed from plastic molds.
A plastic injection mold is a component assembly consisting of many parts assembled together, where liquid plastic is injected into it and then cooled, forming the shape of the product and being pushed out of the mold.
In the structure of a machine system to produce plastic products, the plastic injection mold is an extremely important device. For the plastic t molding to work effectively; create a plastic product of good quality. It must meet the standards for a standard technical structure.
The plastic injection mold design must be up to the details of the mold including the design of the mold shell, the mold core, the mold core details, the mold components. From these detailed designs, a complete design of the mold will be formed.
The requirements of the design must provide the viewer with full details of the projection angles, sections, dimensions, tolerances, and technical requirements of each item to be manufactured. Moreover, the product (plastic t molding) design must be very beautiful
The mold details include mold shell plates, mold cores, mold core details, mold components to form a set of molds. Therefore, the fabrication drawing must provide the viewer with full details of the projection angles, sections, dimensions, tolerances, and technical requirements of each item to be processed.
To manufacture and produce a precise plastic mold according to technical standards with an accuracy of 1/100 mm, the mold must be manufactured according to the required standards. First, it is necessary to pay attention to the material that makes up the mold.
The main material common to make the plastic t molding is different types of steel with high strength. Also has good bearing capacity when put into continuous pressing to mold plastic products. Technical experts will put steel blocks into milling, cutting into standard sized metal parts.
This milling and trimming stage is very important because it will process standard mold parts with high precision. Mold manufacturing always consists of 2 halves, one half has many parts and components, people punch holes at precise points on half of the steel mold.
So that, the upper bar fits exactly into the hole, keeping the 2 halves matched. together when pouring plastic. After the steel block is forming the mold, it will be put into roughening surface roughening to perform the processing step to turn the steel block into a plastic t molding.
Another type of machine controlled from a computer called CNC will slowly grind the steel block to shape each part. This CNC machine is also responsible for making copper electrodes shaped like the plastic part that we want to produce to make micro-parts with a slide tool.
After the copper electrode has been smoothed, the electrode will be brought down to contact the machine below for electrolysis. The bottom half is the other half of the mold that is shaped and punched as described in the first step. Electric current is passed in electrode and imprinted on the die
After the plastic t molding is finished processing, the surface of the print is still rough, it will have to do another step to polish the mold. The gloss of the mold will help to produce smooth plastic products. Currently, plastic products are often printed with labels right on the surface of the product,
So, the mold making process will take one more step, it is necessary to engrave inverted letters in the mold cavity. After the plastic product is molded, the inverted words in the mold will become real words and float on the surface of the product.
The process of creating a set of plastic t molding from design, assembly, inspection, and repair to entering the plastic injection cycle has many details. That are worked together. Attention should be paid to the selection of steel with appropriate quality.
So as not to adversely affect the performance of the plastic injection mold. Steel type and quality determine the degree of rust and wear during use and storage. Various steels can be common to make individual parts on one die such as SKD11 steel, SKD61 steel.
When choosing tool steel, it is necessary to base on the following points:
Accurate idea of
Plastic injection mold design is based on the material properties of the product: loss rate, forming temperature and many other factors. The design of the cooling system in the plastic t molding is extremely important. It is the basis for increasing the injection molding cycle of the mold.
Speeding up the cycle will increase the temperature in the mold. The cooling system effectively controls the mold temperature as the pressing cycle increases. It avoids deformation and damage of the mold and ensuring the quality of the finished product.
A mold manufacturing unit with good expertise and experience will well limit the negative impacts on the quality of plastic molds:
