Project Description

3 LAYER COEXTRUSION BLOW MOLDING MACHINE GRT70-5LII/1-3P
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3 LAYER COEXTRUSION BLOW MOLDING MACHINE, MULTI LAYER BLOW MOLDING MACHINE
Presentation of the basic configuration:
Extrusion system
Screw: specially designed based on material’s trait, High quality nitriding steel 38CrMoAlA,with nitriding surface HV≥800,brittleness≤2;
Barrel: High quality nitriding steel 38CrMoAlA,with nitriding surface HV≥900,brittleness≤2;
Drive mode: inverter + hard gear surface decelerator;

3 LAYER COEXTRUSION BLOW MOLDING MACHINE, MULTI LAYER BLOW MOLDING MACHINE
Presentation of the basic configuration:
Extrusion system
Screw: specially designed based on material’s trait, High quality nitriding steel 38CrMoAlA,with nitriding surface HV≥800,brittleness≤2;
Barrel: High quality nitriding steel 38CrMoAlA,with nitriding surface HV≥900,brittleness≤2;
Drive mode: inverter + hard gear surface decelerator;
Heating mode: porcelain heaters;
Temperature controlling: automatic temperature control model;
Mode of cooling: automatic fan cooler.

2. Die head system
Central incoming die head, totally eliminating the converging line of products, the surface is colorful and uniform; this die head is able to be used to match polyethylene, polypropylene and so on;
Heating mode: stainless steel heater
Temperature controlling: temperature controlling model;

3.Clamping system
Double bar horizontal motion structure in moving, opening and closing mold, making the clamping force equally distributed, so the cut is smoother.
Redesign in accordance with the molding requirement of the sample for efficient productivity.
Frame: it’s able to move up and down。

4.Hydraulic system
Adopted proportional pressure controlling, with hydraulic valve of Japan Yuken and pump of Taiwan Sensor, balanced and accurate action, prolonged useful life, sensitive response.

5.Electric controlling system
Program controlling with Japan Mitsubishi PLC; complete machine communication, parameter setting / modification and menu displaying with the Taiwan Hitech liquid crystal display and touch screen; every parameter could be set and modified directly with the complete obstacle self-diagnosing function, menu operated directly and conveniently。
Extrusion motor with the inverter controlling and alloy hard gear surface decelerator driving, saving power, lower noise, balanced and stable screw rotation。
Safety configuration: safety door, safety switch protection。

BASIC PARAMETERRaw materialPE.PP…
Max. product volumeOne die head:5L
Dry cycle700PC/HR(dry cycle)
Machine size3.2×2.1×2.3(M)
Machine weight8.5T
Installed capacity52KW
Average Consumption26KW/H
TypeNameParameter
PLASTICISING SYSTEMMain parametersEfficiency and low consumptionof plastics systems, frequency control
ReducerHardened, high-strength, low-noise, anti-wear reducer
Injection screw∮40mm,∮70mm,∮40mm,Length and Diameter ratio is L/D=25 ,38CrMoALAHigh-quality nitride steel, energy efficient gradient-type mixing screw. Barrel of the feeding with cooling function
Plasticizing capacity20 Kg/H +70Kg/H +20Kg/H
Heating zone7zonesCast aluminum heater,Auto heating
Heating power12KW/H
Coextrusion material motorOuter layer: 11KW, middle layer: 37KW, inner layer: 11KW
Cooling fan7 zone Power:85W,Auto cooling
EXTRUDER DIEDescriptionStainless steel die head,Centre input die head
Quantity of die headOne cavity die head with 3-layer
Center distance of double die150mm
Max. die diameter140mm
Heating zone4zones
Heating power5.2KW
CLAMPING PARDescriptionHigh strength, high stiffness,, linear low-friction linear guides clamping body
Clamping force120KN
Mold strokeMin-Max: 148~508mm
Mold thickness150-250mm
Max. mold sizeWXH: 320×400mm,
Max. mold platen sizeWXH: 320×400mm,
ELECTRIC SYSTEMDescriptionJapan MitsubishiPLC+ Colorful touch screen, making the operation easy. Automatic malfunction alarm with selfdiagnosis
Temperature controlCommunication
Action controlJapan ,MTSUBISHI PLC
Electrical protectionCurrent overload, short circuits, automatic protection
HYDRAULIC SYSTEMDescriptionEnergy-efficient multi-function hydraulic manifold block, proportional control
Electric motorGermany, SIEMENS(SSML),11KW
PumpDouble vane pump
ValveTaiwan,NORTHMAN / Japan,Yuken
Hydraulic pipeDouble high pressure wear-resistant tubing
System pressure100Kg/cm²
Cooling wayIndependent water circulation, oil cooler
PNEUMATIC SYSTEMDescriptionTaiwanAIRTAC combination of pneumatic components
Air pressure0.6Mpa
Airconsumption0.6M3/min
COOLING SYSTEMDescriptionMold, barrel, oil cooling water source three independent, non-interfering
Cooling mediumNatural water (chilled water better)
Water flow60L/min
Water pressure0.2-0.6MPa
WALL THICKNESS CONTROL SYSTEMMain functionAutomatic wall thickness controller system 100 points MOOG ,JAPAN brand,Set the wall thickness curve
System ConfigurationJapan 100points parison wall thickness control