Technical Characteristics Of Multi-Color Injection Molding
The vertical turntable (parallel shot) injection molding machine is the most widely used two-shot injection molding machine, capable of forming a large number of small and medium-sized products. Usually the tonnage is below 1500 tons, which has certain requirements on the size and shape of the mold, and cannot exceed the area where the plate is loaded.
2. In-mold rotation
After one injection is completed, the rotor is rotated by the motor to move the preform to the next position to complete the subsequent processing. In-mold rotation has outstanding advantages in the field of toothbrush manufacturing, which can increase production efficiency by more than 50%, and at the same time, can complete customized requirements such as multiple colors and simultaneous production packaging.
3. Horizontal turntable
The horizontal rotating (opposite) injection molding machine can form large two-color parts, such as TV frame, car sunroof, lampshade, etc. The maximum tonnage can reach 1900 tons. The biggest advantage of the horizontal turntable is that it can produce large tonnage products, which is unmatched by traditional rotary table equipment. It is widely used in the field of automobile manufacturing.
4. Monochrome injection molding machine produces two-color products
Monochrome injection molding machine is the earliest and most basic two-color injection molding application. The principle is very simple. First, the first semi-finished product will be produced. After the production is completed, the front semi-finished product will be coated on the second set of mold.
The advantage is that the production flexibility is large, the investment on the machine is reduced, and the disadvantage is that the semi-finished product inventory will be increased. It is easier for small injection molding plants that are just starting out to be put into production, but this process will gradually be eliminated in the context of increasing automation.
5. Linkage robot
The two injection molding machines are connected by a linkage robot. The first injection molding machine produces the first product, and the robot takes the product out and puts it into the second injection molding machine to produce the second. In principle, it is the same as the manual pick and place product, but the efficiency is much higher, the dimensional accuracy is more stable, and the inventory of semi-finished products is not required.
Linked robots have unique advantages in the sanitary industry, especially in the processing of showers. The manual input is reduced by about 60% compared with traditional manufacturing, but it requires two machines to match production, and the flexibility of production is not high.
6. Sandwich injection molding
Sandwich injection molding, also known as sandwich injection molding or surface-core processing, allows a material to be completely injected into the surface material. It can be used for refilling, hardness and toughness, and different requirements in the adjustment of the center of gravity of the product. It improves the performance requirements of the product and ensures the appearance of the surface.
An internationally renowned sanitary ware company introduced sandwich injection molding and optimized the addition of secondary materials, saving 35% of raw materials a year. At the same time, it can make rational use of the secondary materials that could not be added, which greatly enhances the competitiveness of the enterprise in terms of manufacturing costs.
7. Cube mold
The cube mold can fully utilize the time of mold opening for cooling, which greatly increases the production efficiency and increases the capacity of the equipment to the limit.
It has outstanding advantages in the production of thin-walled and high-volume products. The only drawback is the extremely high cost of the mold input, and the need for some custom modifications to the equipment.
In the current multi-color molding process, the advantages of the cube mold in terms of efficiency are unparalleled. This process fully utilizes the opening and closing mode, ejection time, etc. in the molding cycle, and has outstanding advantages in mass production.
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