3 Arm Biaxial Rotomoulding Machine
3 Arm Biaxial Rotomoulding Machine is most versatile rotational moulding machine and is very suitable for high volume production. Three arms bi-axial are three station machines with fixed turret and fixed oven. Production cost is very low for entire range. Large tanks can be mounted on left Arm and multiple smaller tanks can be mounted on straight arm. This flexibility is very useful for catering to unstable market demand. World over three arm machines are strength of rotational moulding industry.
Features
The 3 Arm Biaxial Rotomoulding Machine is fully equipped with significant features as follows
- Closed oven with optimized forced air circulation for uniform heating of mould.
- Automation of door opening, closing & turret indexing.
- Fuel efficient burner with auto ignition.
- Temperature, RPM and Cycle time controlled by advance control panel.
- Lowest cycle time, highest per shift production.
- Designed to produce double layer, triple layer and insulated tanks.
- Capable for producing tanks in less material because of even distribution of material.
- Heavy duty L Arm and Straight Arm.
- No process rejection.
- Low Fuel & electric energy cost.
- Clean working environment.
- Mild steel fabricated sturdy reliable design.
- Choice of three arm and four arm options.
- Choice of shuttle type machines.
- Choice of fix oven or moveable oven.
- Options of Straight-Arm, Offset Arm, four Mould Carrier Arms.
- Reverse/forward Mechanism for correct positioning of stations.
- Heating oven with provision of two side doors.
- Straight Arm with two spacious spiders to accommodate different size moulds for convenient working.
- Straight Arm with unique four mould carrier base plates to utilize the maximum oven space in order to accommodate four moulds for economical working with zero rejection.
- Offset arm with sufficient balancing weights for large size moulds and comfortable working design.
- Inspection windows to monitor the mould rotation and polymer melting condition without opening the oven doors.
- Provision for additional second and third layer charging manholes on the top of oven panel without opening the oven door.
- Energy efficient world-class environment friendly ITALIAN BURNERS for LPG/CNG/OIL & duel fuel.
- Efficient hot air circulating blower fans for fast heating of the moulds. Implementing state of the art technology and achieving unique insulation design with new generation energy saving insulation material for better working environment.
- Compact oven design and oven shape for optimum oven volume and economical working with less fuel consumption.
- Unique blower design for efficient air circulation.
- Optional cooling station with high efficient air circulating fan or with water mist and water spray.
Extruder
- The Extruders Base is fabricated out of mild steel plates, Channels, The Top
of the base is machined to mount hopper block and barrel support bracket.
- The AC induction motor and reduction gearbox are accommodated on the base.
- Barrel cooling blowers are all accommodated inside the base.
- The screw and barrel are made from special alloy steel. Barrel and screw are nitride hardened, fine polished and chrome plated. Screw is specially designed for LLDPE material. The function of the screw is to carry the material from hopper to die with homogeneous melt. For precise control of temperature the barrel is divided into 5 zones. Thermocouples fitted on the barrel and Pyrometers on control panel are for monitoring and controlling of the temperatures in each zone. Die zone is mounted on die head for precise control of temperature.
- Barrel blowers are provided to maintain barrel temperature accurately. Finned cast aluminum shells grip the cast heating element and effect quick cooling. Water-cooling jacket is provided in hopper block. Water circulation in the jacket is necessary, for the safety of thrust bearings.
- Thrust Housing is constructed robustly from cast iron to hold the barrel horizontal. Barrel is fitted with heavy flange with high-tension bolt. It is having three bearings. One additional bearing is to withstand thrust pressure during extrusion. Seals are provided for restricting the entry of raw material in the housing.
- Main drive is Ac motor with heavy-duty gearbox connected through V belt and sturdy coupling.
- Die head fixed with flange, Breaker-plate are duly hard chrome plated.
- Water cooling tray is fabricated in SS. Sufficiently long and leak proof. Tray is mounted on stand guide rollers are provided to guide the strands traveling from the tray. Outlets are given at the bottom to drain the water.
- Control Panel is constructed in ms crc sheet. Voltmeter with voltage selector switch for incoming voltage. Temperature controllers with thermocouple, ammeter for each zone.
Pulveriser
The Pulverisers are made as per the latest technology and under stringent quality control
at various stages to ensure that the product once delivered and commissioned gives long lasting trouble free performance with minimum maintenance.
Pulverisers are available in a capacity ranging between 40- 500 kg per hour and are supplied with accessories like hopper loader (spiral conveyor) for loading granules, electro magnetic feeder for feeding the pulverizes, pneumatic conveying system, cyclone separator, airlock valve, vibrating screen, conveyor for conveying powder etc.
The main body of the pulveriser is double jacketed with water cooling arrangement and is made of mild steel of suitable heavy thickness. Granules are fed coaxially in a center of the grinding disks where one disk is rotating against a stationery disks. The disk design is having adjustable gap between two disks and the complete assembly is such that the clogging of the chips or the ground powder is eliminated. This makes the complete system easy to clean, easy to maintain and easy to adjust to any requirement in addition to the production advantage of nearly 150 tones of powder from each set of grinding disks.
Pulverisers can handle granulated materials of low or high density plastic, PVC, PE, PC, LLDPE, and HDPE.
Rotational moulding needs resin in pulverized form. In rotational moulding particle size, shape and particle size distribution is measure of powder quality which plays a very important role. The resultant effects of the good quality powder are as follows:
- Optimization of the charge weight to meet rising competition.
- Improved finish and color of the product.
- Reduced fusion time.
- Multi layered and foamed tanks.
Features
- Ability and control to give uniform and consistent Powder Quality.
- Power required should be low.
- Cooling of grinding element must be sufficient and effective.
- High output.
- Minimum down time.
- Ability to run the machine unattended.
- All system protections so that down time is low.
- Easy to clean, user friendly operation.
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