2. Mold Design Key points:

The basic structure of plastic parts is rectangular irregular narrow frame plastic parts. Plastic parts have no slider and inclined top, mold structure is relatively simple. Due to the irregular shape of the plastic parts, its dimensional tolerance is strict, as shown in Figure 2. In Figure 2, some important assembly dimensions and center distance dimensions are marked with tolerances. SC in the box behind the dimensions represents special characteristics, which can also be understood as important dimensions.

Mold design, the first need to analyze the plastic parts, for the mold structure has a preliminary reasonable judgment. This set of mold has no complex structure, the main difficulty is the analysis of the opening direction, further is the parting surface design of plastic parts. There are 6 U-shaped posts on the edge of the plastic parts, which are oriented towards the front die and the back die of the mould respectively, resulting in the complexity of the parting surface. There are two flat cylindrical columns on one side of the plastic parts, which are easy to stick. 

The gating system of the mold adopts the latent gate, as shown in Figure 7. In order to adapt to the mold structure that the front die is pumped first, A distance is separated between the mold panel and plate A, and the front die is pumped first to reduce the sealing force of the insert on the flat cylinder. Therefore gate set of end face with A board formation of separatist movement, so need grinding out 2  taper in the circumference of A circle. The spring between the panel and A plate is designed to separate the driving force, and the plug screw is used as the limit. A plate and B plate are designed to be tensioned by nylon buckle, so that the panel and A plate are separated first, and the front mold is pumped first;


Note: Our factory Dongguan Cents Industrial Co.,Ltd is very professional in making all kinds of plastic injection molds. We provide detailed design constructure and not ignore any small thing. This is why so many customers like to work with our factory. Till now, we make around 100sets molds for customers from Europe, USA, Japan, Iran, Brazil...

  Our factory has been certified by ISO association adn NAQ16949 for Auto parts
  

Cents is a factory with 20 years of experience in mold making and injection molding. Currently, the company and its factory covers an area of 13,000 square meters and has around 200 workers. Among them, 26 are design engineers and structural engineers. We have a complete mold production workshop, injection workshop, dust-free injection workshop, inspection room, warehouse, and assembly workshop. We have advanced EDM and WEDM mold production equipment imported from Japan. We have 46 injection molding machines, 19 of which are Japanese Sodick brand, in order to produce high-precision plastic products. Our products are widely used in the new energy automobile industry, medical industry, mechanical and machinery industry, home appliance industry and beauty industry. Among them, we are very professional and have rich experience in the production of negative pressure cups, tapping thread products and transparent acrylic products.
In 2019, we started to carry out the IMD/IML process and established an IMD/IML product production workshop, specifically for some customers who have very high requirements for product appearance and process.
Our factory has always adopted ISO 9001 as its operating principle. In terms of auto parts products, we have been certified by the 16949 organization and issued a 16949 certificate.
Our company only focuses on ODM/OEM design and production. Therefore, to provide customers with the best quality design, production and service is our company's core value requirements;

  ***More than 40 sets injection machines;
  ***More than 20 engineers and 200 workers;
  ***One-stop service in making mold and molding;
  ***Anti-dust workshop for IMD/IML molded parts;
  ***Assembly line available for some finished parts;
  ***Most advanced equipment for EDM & WEDM, Sodick brand injection machine
  Our mold process machine list and injection machine list is attached below: