Strand Pelletizer Machine
The strand pelletizer machine is always connected to plastic pelletizing line, like this double screw water drawing rod granulation production line which can produce 50-200kg/h. Of course the specific output depends on the proportion of raw materials, melt flow rate, formula, and production process.
Description
Introduction
The Strand Pelletizer Machine is a plastic granulating equipment, which is used to cut continuous plastic strips into uniform particles.
Feeding system
1. Feeding motor power: 0.75KW;
Speed regulation method: AC frequency converter control;
Screw form: Twin screw with stirring and propulsion type;
Transmission speed ratio: 17:1
2. Material of hopper: stainless steel;
The feeding screw, feeding hopper, etc. are all assembled and disassembled flexibly;
Equipment power system (motor and gearbox)
Drive motor: AC motor, power 37KW, Siemens Beide;
Speed regulation method: controlled by Aikte heavy-duty AC frequency converter
Screw speed: 0~500rpm;
Transmission speed ratio: i=3:1. B-type gearbox, high-speed and high torque.
Transmission gear: adopts a parallel three-axis design, integrating deceleration and torque distribution; The gears are made of high-quality alloy material 20CrNi2Mo; All gears are made of carburized and quenched hard tooth surfaces, with precision grinding processing accuracy of level 8, ensuring gear strength, uniform tooth load, high strength, low noise, and high transmission torque;
Transmission bearings: Radial bearings are all products of the Japanese NSK brand; Needle roller bearings are made of SKF.
Screw system
Screw diameter: ￠ 41.2mm
Length to diameter ratio: L/D 40:1
Screw structure: Based on the organic combination of threaded elements and meshing blocks with different lead lengths and lengths, various functions such as conveying plasticization, mixing and kneading, shear dispersion, homogenization, exhaust volatilization, and pressure building extrusion are achieved;
Rotation direction: Double screw meshing type rotates in the same direction;
Screw component material: Made of MOV12 high-speed wear-resistant tool steel, vacuum quenched, with a hardness of HRC58~62. After precision grinding and forming using a CNC thread grinder specifically designed for threaded components, the curve fitting and surface smoothness far exceed those of products processed using conventional methods;
Connection method with the core shaft: using involute spline connection, modular combination; The interlocking screws rotate in the same direction, clean each other, and have excellent self-cleaning and interchangeability;
Core shaft: Made of high-strength high-quality alloy steel 40CrNiMo, adjusted to HB300-350 to ensure the transmission requirements of screw torque;
Features
High pelletizing precision
The equipment adopts a high-precision hob structure and an adjustable pressure feed roller system to ensure that the strip material is evenly stressed during the pelletizing process.
Easy to operate
The Strand Pelletizer Machine is equipped with a PLC control system and a touch screen operation interface, supporting functions such as speed adjustment, particle counting, and operating status display.
Strong adaptability
Our products can flexibly work with single-screw and twin-screw extrusion systems and different forms of cooling water tanks, and are suitable for multiple or single-strip drawing methods.
FAQ
Q: What types of plastic materials can be processed with a strand pelletizer machine?
A: Strand pelletizers can handle a wide range of thermoplastics, including PP, PE, PET, PVC, PS, ABS, PA, PC, and filled or reinforced polymers. They are widely used in compounding, masterbatch, and recycled material pelletizing.
Q: How does a strand pelletizer achieve uniform pellet size?
A: It uses a rotating knife and stationary bed knife system to cut plastic strands into uniform pellets. Pellet size is controlled by adjusting knife speed and strand feed rate, typically achieving lengths of 3–5 mm with tight tolerance.
Q: What is the typical output capacity of a strand pelletizer?
A: Output varies by machine size and strand number. Standard models handle 50–1000 kg/h, while large industrial units can exceed 2000 kg/h, making them suitable for high-throughput production lines.
Q: What are the cooling requirements before pelletizing?
A: Strands must be fully cooled before entering the pelletizer to prevent deformation and ensure clean cutting. Cooling is typically achieved through water baths or air-cooling tunnels, depending on the material and line design.
Q: Can the strand pelletizer be integrated into a continuous production line?
A: Yes. Strand pelletizers are designed for online integration with extrusion and compounding lines. They can be linked with upstream extruders and downstream dryers, sieves, and packaging systems for fully automated operation.
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