Heating effect and die selection of energy saving blow molding machine supply equipment

The raw material of the thread is under great pressure, at the same time by the material cylinder heating effect of raw material, through raw material compression, shear, friction between the barrel thread and raw material, molecular and stirring action between friction, will produce a certain amount of heat. Therefore, when the temperature of the barrel increases gradually to its physical state, the raw material will gradually transform from the glass transition of the high elastic state to the viscous flow state, so as to realize the complete plasticization.

Because the screw has been steadily rotating, the plasticizing uniform molten material isoppressing, the same amount of extrusion from the molding mold mouth, become a certain shape of plastic products. After the cooling shape, that is, to complete the extrusion molding products work.

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What is the mold choice of blow molding machine?

Determine WHETHER THE “large column DISTANCE”, “DIE thickness”, “MINIMUM DIE SIZE” and “DIE PLATE size” of the machine are appropriate by the die size to confirm whether the die can be put down. For example, the width and height of the mold should be less than or at least on one side less than the large column spacing.

The width and height of the die should be within the size range of the die plate.

The thickness of the blow molding machine mold should be between the mold thickness of the injection hollow blow molding machine; The width and height of the mold should meet the recommended size of the injection hollow blow molding machine, too small. When THE MATERIAL IS injected into THE mold hole at HIGH pressure, a clamping force will be generated, SO THE clamping unit OF the injection hollow blow molding machine must provide enough “clamping force” so that the mold will not be stretched open. The calculation of the clamping force is as follows: the projected area of the finished product in the direction of the switching die is obtained from the appearance size of the finished product; Die supporting force = the projected area of the finished product in the direction of the switching die (cm2) × the number of die holes × the pressure in the die (kg/cm2).
The pressure in the mold varies with the raw material. The general raw material is 350-400kg/cm2. The clamping force of the machine should be greater than the clamping force, and for the sake of safety, the clamping force of the machine should be more than 1.17 times the clamping force of the mould.