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Brief Introduction of Double-Color Injection Molding

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  • Time of issue:2023-06-26 12:09
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(Summary description)The file made a brief introduction of the double-color injection molding including the advantages, principles, the process and the structure of the molds and the features.

Brief Introduction of Double-Color Injection Molding

(Summary description)The file made a brief introduction of the double-color injection molding including the advantages, principles, the process and the structure of the molds and the features.

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2023-06-26 12:09
  • Views:
Information

combinations. This convex mold can rotate. The injection molding machines equipped with are two barrels. The second tube is best designed to be vertically designed in the direction of the injection molding machine. You can inject two different plastics at the same time. When the two plastic settles are settled, the injection molding machine is turned on and automatically topped the complete products. After removing the product, the "Rotating Model" is 180 degrees. The injection molding machine is closed and the next cycle is performed.

 

  1. Because the first and second tube of the "convex model translation" mode are injecting, the first and second tube of the "convex model rotation" mode are injected at the same time. Therefore, the efficiency of the same product produced in the "convex model rotation" mode is doubled in the "convex model translation" mode.

 

  1. Double-color mold new technology

 

The double-color injection molding machine has two tube. The mold is a single cavity, and at the same time, it has the common empty cavity required for the first plastic ("hard plastic") and the second plastic ("soft plastic"). The concave and convex models required by this technology are single, which is fundamentally different from the first two production models. When the first type of plastic is injected, after the first plastic is partially solidified or solidified. The dynamic oil cylinder that controls the beginning drives the blade of isolation, and retreats to the flat surface of the convex mold. At this time, the second tube is injected with the second plastic. After the second plastic is completely solidified, the injection molding machine is opened and a complete product is taken out. Then the injection mechanism is closed and the next cycle is performed. The obvious advantage of this technology is simplifying the mold and reducing the demand for the working space of the injection molding machine (small double-color injection molding machines can be used to reduce investment and energy consumption). And it can increase yields than previously adopted, and fundamentally avoided the bad products produced by the shrinking and deforming "hard plastic" into the mold cavity.

 

Features of double -color molds:

  1. The two shapes of the front mold are different, and one product is formed respectively. The two shapes of the latter model are exactly the same. (Note: If there are different, do the front module to ensure the consistency of the rear mold)
  2. After the mold of the mold rotates 180 in the center, it must be consistent with the rear mold. Pay attention to this when designing.
  3. When designing, please carefully check the parameter data of the double-color injection molding machine, such as the maximum capacity of the capacity, the minimum capacity, the thickness of the top stick, and the distance of the top stick.
  4. The water mouth of the three -board mold is best designed to automatically remove the mold. In particular, pay attention to whether the desalination movement of the soft plastic mouth is reliable.
  5. When designing the second injection -shaped cavity, in order to avoid the first -time product plastic position that has been formed for the first time, it can be designed to avoid emptiness. However, we must carefully consider the intensity of each sealing position, that is, in the injection molding, will there be deformation of plastic under the pressure of large injection, resulting in the possibility of the second injection molding?
  6. When injection molding, the product size of the first injection molding can be slightly larger, so that it can press the other cavity tighter to the other type in the second formation to achieve the role of the seal.
  7. Note that when the second injection molding, will the flow of plastic impulse the first good product that has been formed for the first time to deform its plastic position? If this is possible, you must find a way to improve.
  8. The two-type cavity and core water transportation layout is as sufficient as possible, and balanced and the same.
  9. 99%is the hard plastic part of the injection molding product, and then the soft plastic part of the injection molding product. Because soft plastic is easy to deform.
  10. In order to make the two plastic "sticky" tighter, the "viscosity" between materials and the roughness of the mold surface should be considered. Double -color injection plastic has a special TPU; the smoother the surface of the mold, the tighter they are "sticky".
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