The gate design of precision injection mold can make the flow velocity of molten plastic transported by sub channel produce acceleration, form ideal flow pattern and sequence, and quickly fill the mold cavity. At the same time, it also plays the role of closing the mold cavity to prevent the molten material backflow, and it is convenient to separate the gate from the plastic part after molding. Since the gate plays such an important role in the design of […]
Most people are particularly concerned about “how much is the cost of the injection mold?” In general, the cost accounting of injection mold is mostly traceable. But there are also some cases where the cost of the injection mold will be increased. One of them is repeated trial. The repeated trial mold not only increases the cost of injection mold, but also delays the time of product putting into the market, which is very disadvantageous for customers to seize […]
Short shot refers to the phenomenon that the cavity of plastic mold is not completely filled due to the insufficient fluidity of plastic, resulting in incomplete plastic products. The main reason is improper injection pressure and speed (including excessive pressure loss caused by resistance), which is mainly affected by the following aspects:
1、 Injection molding machine
(1) Insufficient injection molding capacity – this is caused by the high capacity of the injection molding machine, which may also be caused by insufficient […]
The characteristics of high precision injection molding are as follows:
The specification of injection molded parts has high precision and small dimensional tolerance.
To ensure the requirements of high precision injection molding, the necessary standards are as follows:
1. Good die material, enough stiffness, die specification accuracy, smoothness and precision positioning between the templates should be high.
2. High precision injection molding machine should be selected.
3. High precision injection molding process should be selected.
4. Plastic materials suitable for high precision injection molding process […]
The automobile industry has developed rapidly in the past ten years, and more and more new products have entered the market, such as new energy vehicles. A large number of automatic parts are made of plastic. As a new material of automobile parts, plastic parts can reduce the weight of automobile and save energy, so they are widely used in automobile industry. This means that a large number of plastic injection molds are needed to produce the required plastic […]
With the continuous shortening of product renewal cycle, the number of plastic parts produced in small batch is increasing. In addition, when testing products, small batch production of plastic parts is also needed. In order to meet the needs of small batch production, a variety of injection mold for small batch production came into being.
In order to meet the market demand, Shenzhen Mingyang Yutong, as a 15 year injection mold manufacturer, established the injection molding department at the beginning […]
Although in the plastic injection mold technology, to produce high gloss, high aesthetic requirements, not subject to the stress generated in the molding process, with high stability of parts, as well as reliable filling of thin-walled materials, are facing great challenges. However, hot / cold forming is being rapidly accepted in automotive interiors and many other consumer applications requiring high surface aesthetics. Let’s take a look at the production process plan of high-quality injection parts with high gloss;
Change of […]
The surface of the plastic part can be sprayed to ensure the brightness of the product. Because plastic is so hard to embody, plastic parts look darker, and even darker if they are covered in leather. Therefore, in the pursuit of a beautiful surface, Some customers requires to spray a layer of painting on the surface of plastic parts. This will ensure the brightness of the product.
Spraying the surface of plastic parts can reduce the scrap rate of parts. […]
The cavities in Plastic injection mold is not the more the better, also not all molds can be done with 4 cavities or 8 cavities. So what are the factors affecting the numbers? Let’s have a look below:
Relationship between the product size and equipment.
When the part belongs to large or medium size, generally speaking, single cavity is used. On the one hand, it is necessary to consider the fluidity of plastic material filling mold when injection molding, so as […]
(1) Standardized management of product and drawing data
Effective management can ensure the comprehensiveness and consistency of data, and make the data share and query effectively. To prevent problems caused by data inconsistency and drawing non-standard from being found and corrected in time, resulting in rework and maintenance of the mold, increasing the manufacturing cost of the mold, and affecting the delivery time
(2) Establish the company’s own quality inspection mold department, standardize various inspection methods. Get rid of fluke. Strengthen […]