Blow molding machine maintenance

Blow molding machine is a kind of equipment that makes plastic particles into hollow containers through blow molding process. At present, the more common models include one-time hollow extrusion blow molding machines that use PP and PE, and use PET, PC or PP to mold twice. The injection stretch blow molding machine, as well as the newly developed multi-layer hollow extrusion blow and stretch blow molding. At present, most of the blow molding machines are still two-step blow molding machines, that is, plastic raw materials must be made into preforms before blowing. Nowadays, the environmentally friendly plastic made of PET is generally used. Blow molding machine: After the liquid plastic is sprayed out, the wind blown by the machine is used to blow the plastic body to a certain shape of the mold cavity to make a product. This kind of machine is called a blow molding machine. It is also a kind of blow molding machine, namely hydraulic blow molding machine. The tubular plastic parison obtained by extrusion or injection molding of the thermoplastic resin is placed in a split mold while it is hot (or heated to a softened state). After the mold is closed, compressed air is injected into the parison to blow the plastic parison It expands and sticks to the inner wall of the mold, and after cooling and demolding, various hollow products are obtained. Maintenance 1 No feeding at the feeding level: Check several situations: Whether the hopper is out of material, if yes: Need to fill up as soon as possible No: Please check whether the control contactor of the hoist is in the energized state, if it is in the energized state, Hurry up and check whether the motor is energized and loaded, because in this case it is likely that the lifting belt is stuck by the preform (preform). At this time, the easiest way is to help lift it manually. If you check that the control contactor of the hoist is not energized, please check whether the preform detection electric eye and the reflector are not in the same straight line. 2 Feeding old card feeding tray: This situation is a headache. From experience, if the length of the preform (preform) is longer and the weight is larger, then this phenomenon is relatively rare. 3 After the bottle is blown, it cannot be taken out of the mold. First of all, you should open the mold, open and close the mold manually, if it is normal, run it in the dry running state, if it is also normal. Please check your exhaust time setting. If the exhaust setting is normal and it fails every time you blow the bottle, then it can be judged that the exhaust valve is the problem. Please open the exhaust valve to check the condition of its spring and seal Another phenomenon of this failure is that the exhaust sound is relatively loud or there is a sound of dirty exhaust). If you encounter a situation where many molds are normally produced and accidentally cannot open the mold, please check whether the clamping pin has a segmented screw in it. In addition, please check whether the clamping force is too large. If it is too large, you should follow Standard readjustment. 4 Whether the position where the bottle is always pinching the manipulator is misplaced. 5 If two manipulators collide, you need to manually reset the manipulator again, which is caused by misalignment.
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