Apr 27, 2013
A. Double color mould: injection two kinds of plastic materials in the same injection machine, two molding products, but only die once. This is also called double injection molding process, usually by a set of mould, and the need of two-color injection molding machine specialized. Wilson two-color die
B. package of plastic mold (two molding): two kinds of plastic material is not necessarily in the same injection machine molding, molding die two times; product is taken out from a mold, and then into another set of second injection molding mold. Therefore, the completion of the general of the molding process usually consists of 2 sets of molds, without the need for two-color injection molding machine specialized. Bao Jiaomo
Two-color molds and rubber mold overview: rubber mold in the design should pay attention to location of hard plastic, it needs reliable sealing glue and glue pieces have inverse gradient pore, prevent pull plastic deformation. Double color mould are increasingly popular on the market, in this process can make the product more beautiful easy to change color, but can not spray, but expensive, high technical requirements.
The two form of 1.Cavity is different, respectively, forming 1 kinds of products. While the two form Core exactly the same. Before, after the mold 2 mold with the center of rotation of the 180o, must be identical. Design must do the test action. 3 note top pinhole location, the minimum distance of 210mm. The mould shall be appropriately increase the number of ejector rod hole. And, because of the injection molding machine itself comes with a thimble is not long enough, so we must design mold lengthened thimble, thimble grow mold bottom about 150mm. After the board must design the 2 positioning rings. The total thickness of 4 front panel cannot be less than 170mm and A board. Other reference data, please carefully check the type of injection molding machine for example, maximum mold thickness, the minimum allowable mold thickness, top stick hole distance. Nozzle 5 three-plate mold can best designed to automatically release action. Special attention should be paid to release action soft nozzle is *. The depth of 6 SPRUE more than 65mm not front. The upper (gate) the top of the SPRUE to the mold center distance of not less than 150mm. 7 in the design of the second injection of CAVITY, in order to avoid CAVITY insert (or brush) injury first has good forming product glue, can design a part to avoid empty. It must be carefully considered every bit of strength sealing glue, namely: in injection, whether there will be under great pressure in injection molding, plastic deformation, leading to the second injection may have a number of front possible? 8 injection, the first injection molding product size can be slightly larger, so that it can communicate with another CAVITY pressed more tightly in the second molding, in order to achieve the effect of sealing glue. 9 note in the second injection molding, plastic flow impulse whether first has good molding products, so that the plastic deformation? If that is possible, we must think of a way to improve the. In A 10, B plate mold, should pay attention to whether the former mode Slider or Lifter will be reset and the crushed products? So, must think of a way to make the A, B plate mold, after the first mode SLIDER or LIFET to reset. Water transport arrangement of 11 two CAVITY and CORE try to make full, balanced, and as. The 12.99% situation is hard plastic part injection molding products and injection molding products, the soft part. Because plastic deformation.
Now the hardware mold has strong competitiveness, and the biggest advantages and strengths is that private enterprises, but also in the traditional industry, to enter the high-end market is inseparable from the high-tech. With the development of hardware mould industry in our country, from the increasingly fierce competition, the hardware mold industry disorderly competition began to appear, low cost, hardware structure of product quality and technical content is not high defects are also increasingly exposed.
The metal mold industry nineteen sixties began to rise in Dongguan, in the late 80 peak. The metal mold industry doorsill is low at that time, also do not need what technology, 30000 yuan buy some old equipment can open a family workshop-style hardware mold factory. After 40 years of development, all kinds of hardware, mold processing enterprises have over 10000, the vast majority are labor intensive enterprises.
At present, domestic private enterprises mold generally has advanced equipment, technology is advanced, the new technology can be widely used in the industry, rapid, related to the material, heat treatment production from design and manufacture, the formation of the industrial chain, integration advantages. The current hardware mold enterprises due to lack of funds and lack of its own brand, hardware mold enterprises to strengthen management and technical transformation investment, expand the proportion of high-end products, and the establishment of the domestic sector, actively expand the domestic market.
In the international market competition is becoming increasingly fierce die-casting die situation, the Japanese die industry in an effort to reduce the production cost. In the size of the market, regardless of production or domestic demand to economic recession in Japan is the most obvious. The Japanese mold manufacturers pay more attention to polishing and grinding process in the technology, the German die manufacturers to improve accuracy and efficiency of machining and electrical discharge machining, in order to reduce the manual processing time. Now the Japanese die industry is gradually will die technology content is not high to the human in areas of low cost production, only in the domestic production of high technology content of products, the Japanese speed up the transfer abroad of the trend, the Japanese domestic die-casting mold use reduction.
Experts believe that the United States, Germany, Japan, the global production strong domestic demand gradually decline and increased costs, these countries are making mold manufacturers began to shift production, and gradually open up the Chinese market. Hopes that China's cheap labor and materials procurement costs to increase profits.
But the mould production company of these countries once East, then it will make the design and manufacturing technology of mold of the national intangible outflow. It must again be substantial investment in R & D costs to strengthen its mold the competitiveness of their products, which opened its differences with the Chinese mold products.