Blow molding device and blow molding method for plastic fuel tank
A blow molding device and fuel tank technology, applied in the blow molding field of blow molding devices and plastic fuel tanks, can solve the problem that the plasticizing amount of the extruder is not stable enough, the parison cutting is wrinkled, and it is easy to stick together again, etc. problems, to achieve the effect of saving time, reducing maintenance time, and improving appearance quality
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[0022] Such as figure 1 and figure 2 As shown, under the support platform 7 of the plastic fuel tank blow molding device of the present invention, there are a fuel tank left half mold 8, a fuel tank right half mold 8', a mold clamping mechanism 9 and a fuel tank built-in mechanism 10. The fuel tank left half mold or the fuel tank right There are 900 vacuum holes on each half mold; two sets of parison extrusion devices are symmetrically arranged on the supporting platform, each set of parison extrusion devices includes an extruder 1, a hopper 2, a melt metering pump 3, and a compound distribution 4 and servo flat die head 5; each set of parison extrusion device has six extruders, followed by inner layer high-density polyethylene extruder 1-1, inner layer adhesive extruder 1- 2. Barrier material extruder 1-3, outer bonding material extruder 1-4, reuse material extruder 1-5 and outer layer high-density polyethylene extruder 1-6, six The hopper 2 is installed at the entrance of t...
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