The injection mold is also called a self-pressure injection mold or a die-cast mold.
The injection mold can be divided into two types according to the structure, one is a separate structure (combined injection mold), and the other is a one-piece structure (integral injection mold).
The separate injection molding die is also called a combined injection molding die. When using such a mold, the mold should be clamped first (if the product part contains a skeleton, the skeleton is first installed or fixed in the mold cavity), and then the injection device equipped with the quantitative compound (ie, the hopper and the plunger) Place it in the center of the plane on the mold or in the proper position, then start the vulcanizer pressure system. At this point, the rubber will pass through the plunger to take the pressure from the hot plate of the vulcanizer, and plastically deform and flow. Through the flow channel system of the mold, it is forcibly squeezed into the cavity of the mold. After the rubber is filled into the cavity, the hot plate of the vulcanizer is returned, the injector is taken out, and the mold is repressurized and heated. After the vulcanization time specified by the process is reached, the mold can be taken.
Integral injection molding, the structural feature of this type of injection mold is that the mold itself is compatible with the structural elements of the injector (hopper and plunger). The mold has a special feeding chamber and a flow passage leading to the cavity, and the rubber in the feeding chamber is pressed into the cavity through the flow passage under the pressure of the plunger. These molds are strong in overall structure, compact in structure, easy to use, and have high production efficiency.
The characteristic of the injection mold is that the cavity is closed first and then injected into the rubber compound, so the rubber edge is less, and the rubber material is injected through the flow passage under a higher pressure, so that the gas is sequentially discharged according to the advancement of the rubber material, and the rubber material flows through the flow. After the road becomes more uniform, the temperature of the rubber compound is increased, so the quality of the product is high, especially the large-sized rubber-inlaid metal insert products with complicated shapes, which are suitable for injection molding, and can inject thin wall which cannot be manufactured by ordinary compression molding. , super long and super thick products. Sometimes the injection mold has an ejection device to facilitate the removal of the product while also improving the efficiency and the life of the mold.
Injection molding is generally used in the manufacture of parts with complex shapes or rubber parts containing skeletons. The structure of the mold is complicated and the manufacturing cycle is long. However, with the popularization and application of digital controlled boring machines, machining centers and CNC engraving machines, the processing becomes more and more simple.
What are the characteristics of the injection mold?
2019年3月3日
Rubber Molds FAQs
Comments Off on What are the characteristics of the injection mold?
Editor
The injection mold is also called a self-pressure injection mold or a die-cast mold.
The injection mold can be divided into two types according to the structure, one is a separate structure (combined injection mold), and the other is a one-piece structure (integral injection mold).
The separate injection molding die is also called a combined injection molding die. When using such a mold, the mold should be clamped first (if the product part contains a skeleton, the skeleton is first installed or fixed in the mold cavity), and then the injection device equipped with the quantitative compound (ie, the hopper and the plunger) Place it in the center of the plane on the mold or in the proper position, then start the vulcanizer pressure system. At this point, the rubber will pass through the plunger to take the pressure from the hot plate of the vulcanizer, and plastically deform and flow. Through the flow channel system of the mold, it is forcibly squeezed into the cavity of the mold. After the rubber is filled into the cavity, the hot plate of the vulcanizer is returned, the injector is taken out, and the mold is repressurized and heated. After the vulcanization time specified by the process is reached, the mold can be taken.
Integral injection molding, the structural feature of this type of injection mold is that the mold itself is compatible with the structural elements of the injector (hopper and plunger). The mold has a special feeding chamber and a flow passage leading to the cavity, and the rubber in the feeding chamber is pressed into the cavity through the flow passage under the pressure of the plunger. These molds are strong in overall structure, compact in structure, easy to use, and have high production efficiency.
The characteristic of the injection mold is that the cavity is closed first and then injected into the rubber compound, so the rubber edge is less, and the rubber material is injected through the flow passage under a higher pressure, so that the gas is sequentially discharged according to the advancement of the rubber material, and the rubber material flows through the flow. After the road becomes more uniform, the temperature of the rubber compound is increased, so the quality of the product is high, especially the large-sized rubber-inlaid metal insert products with complicated shapes, which are suitable for injection molding, and can inject thin wall which cannot be manufactured by ordinary compression molding. , super long and super thick products. Sometimes the injection mold has an ejection device to facilitate the removal of the product while also improving the efficiency and the life of the mold.
Injection molding is generally used in the manufacture of parts with complex shapes or rubber parts containing skeletons. The structure of the mold is complicated and the manufacturing cycle is long. However, with the popularization and application of digital controlled boring machines, machining centers and CNC engraving machines, the processing becomes more and more simple.