As one of the key equipment for manufacturing plastic products, the selection and operation of demolding methods for plastic molds not only affect product quality and efficiency, but also play a decisive role in the competitiveness of enterprises. So what are the specific demolding methods for plastic molds?
1. Mechanical demolding
Mechanical demolding is currently one of the most widely used demolding methods. It is a demolding method that separates the mold and plastic products from the mold cavity through the up and down movement of the top or bottom pins of the mold. In the operation of mechanical demolding, the diameter of the top and bottom pins should be equal to or slightly smaller than the diameter of the mold cavity to ensure that the mold can smoothly detach from the mold cavity. Mechanical demolding has the characteristics of simple operation, high efficiency, and high accuracy, and is suitable for manufacturing large plastic products or parts that require high precision.
2. Hydraulic demolding
Hydraulic demolding is a demolding method that achieves the detachment of the mold through the up and down movement of the hydraulic cylinder. Compared to mechanical demolding, hydraulic demolding has greater demolding force and higher accuracy, which can cope with more difficult plastic product manufacturing. Moreover, hydraulic demolding can also achieve multi-step variable displacement of the mold, making the demolding of plastic products more stable and less prone to deformation. However, the mechanical equipment and operation difficulty of hydraulic demolding are also higher, requiring special training to master.
3. Pneumatic demolding
Pneumatic demolding is a demolding method that achieves the detachment of the mold through the up and down movement of the pneumatic cylinder. Compared to mechanical demolding and hydraulic demolding, pneumatic demolding has faster speed and higher efficiency, especially suitable for the manufacturing of small plastic products. In addition, pneumatic demolding can also achieve demolding with different forces by controlling the air pressure, thereby better ensuring the integrity of plastic products. However, pneumatic demolding also has problems such as high noise and susceptibility to pollution, which require strengthened maintenance and daily maintenance.