With With the advent of electric vehicles and driverless technologies and the era of new energy vehicles, lightweight design of automobiles will be an inevitable trend in automotive design, and plastics that can make lightweight design into reality will inevitably be plastic. Plastics are widely used in the automotive industry. It is bound to bring a new historical opportunity for the plastics industry and automotive injection mold industry.
Inside and outside
1. Automotive interior instrument panel assembly
Mainly includes the main instrument panel assembly, instrument panel tube beam assembly, sub instrument panel assembly.
2. Automotive side trim interior panel assembly
3. SUV model side trim interior panel assembly
4. Automobile interior door guard plate assembly
5. Car roof assembly
6. Front and rear bumper assembly
7. Car back door guard assembly
8. Automobile mudguard assembly
9. Automotive lighting assembly
Internal and external materials commonly used
The proportion of automotive injection molds on the interior and exterior
Behind the rapid development of the automotive industry is the development of the automotive mold industry. Especially in recent years, the development of the world's automotive mold industry is changing with each passing day. The demand for molds from automobiles is also growing. In a new car, automotive injection molds are needed. About 500. In the developed countries of the automotive industry, the market share of automotive products has exceeded 60%, and this trend continues to rise. It can be said that injection molds account for the largest proportion in the automotive mold, the importance of which goes without saying.
Advanced technology of interior and exterior decorative injection molds
There is no essential difference between automotive injection molds and other injection molds, but it also has many characteristics of its own. As the added value of automotive injection molds is generally high, many advanced technologies (such as sequential valve hot runner control technology, internal parting surface Technology, low-pressure injection molding technology, etc.) are given priority in the development and application of automotive injection molds.
1. Sequential valve hot runner control technology (SVG technology)
Sequential valve hot runner control technology (SVG technology) is a new type of controlled hot runner technology. It uses the sequential control of the cylinder to enter the rubber, which solves the problem of defects in the appearance of the traditional multi-point synchronous rubber products. It can effectively avoid cars. Internal and external trims have fused flaws, cavitation and other defects, reduced flow length, reduced molding pressure, and played an important role in the external appearance of automotive interior parts.
2. Low pressure double injection mold technology
The so-called low-pressure two-layer injection mold, also referred to as low-pressure injection mold, is a new type of injection mold technology. It will directly rely on the manual coating, negative mold positive vacuum adsorption parts directly injection molding in the mold to complete. Low pressure injection molding The main principles of the mold are: Lower injection pressure The plastic flows on the cloth. When the mold is opened, the cloth is hung on the front mold, then the mold is closed, the mold is injected, and finally the parts are taken. The products produced by this technique are Because the surface has a special layer of soft fabric, no matter if it is decorative, feel, or aesthetics, it is greatly improved. Therefore, low-pressure injection mold technology is widely used in high-end cars, generally used in car map bag skeleton, automotive ABC column and other parts .
The main principle of the low-pressure injection mold is that the injection pressure is lower on the cloth. When the mold is opened, the cloth is hung on the front mold, the mold is closed, the mold is injected, and then the parts are taken.
Number of holes: 1+1
Models: Great Wall
Product Name: Left/Right B-pillar guards
Production Machine: 1600T
Number of holes: 1+1
Models: Great Wall
Product Name: A pillar protection plate
Production Machine: 1600T
3. Automobile bumper internal injection mold technology
In automotive injection molds, for automotive bumper products, mold design often uses advanced internal parting technology. The advantage is that parting clips are hidden on the non-exterior face of the bumper. To the appearance of the clip, it will not affect the appearance of the product. However, this technology is more complex than the external sub-type bumper in terms of difficulty and structure, and the technical risk is also higher. The cost of the mould and the price of the mould will be higher than that of the external sub-type bumper. Many, but because of their beautiful appearance, they are widely used in high-end cars.
As shown in the figure below, the product is ejected at both ends using a straight top and inclined top mechanism.
The bottom of the product shown in the figure below adopts a structure designed with a straight top on a large slanted roof so that when the product is ejected, it prevents the product from going out with the inclined top.
This side undercut adopts the structure of inclined roof and inclined roof:
The deduction is performed by using the structure of the tunnel block on the straight top:
The ejection mechanism is ejected in three levels:
(1) The first stage ejector adopts 4 cylinders to push out and the top mold is synchronously moved out with 60MM, and 4 pull hooks are auxiliary mechanisms;
(2) The second stage ejection and then the cylinder continues to eject 70MM;
(3) The third stage of the top out with two small cylinders to do the top out of the second 30MM, easy to take pieces.
In order to ensure that the inclined top is synchronous with the front mold during mold opening, the product can be deformed and released. When the ejector mechanism is synchronously moved with the front mold 60MM, the front/rear mold part is separated, thus protecting the mold and ensuring that the product is not Will be dragged!
