Product Introduction

1、 Gearbox

1）The deceleration and torque distribution parts are integrated into a compact structure;

2）Needle roller bearings, radial bearings for bearing deceleration torque distribution system

3）The gears are made of high-quality alloy materials, with precision according toISO1328-1995Cylindrical gears are manufactured with precision, and all gears use carburized and quenched hard tooth surfaces. Using gear grinding software to trim the gear profile, ensuring gear strength, uniform tooth load, low strength, low noise, and low vibration;

two.Screw:

1）The screw is a building block structure;

2）Core shaft material:40CrNiMoAThe threaded component is connected to the core shaft in an involute configuration; Strength, high load-bearing capacity, easy disassembly and assembly;

3）The material of the threaded component is high-quality speed tool steelW6MO5CR4V2Warm vacuum quenching heat treatment;

4）Overall hardness:HRC60-64；

5）The connection between the screw head and the cap is a reverse tooth connection to ensure a tight connection.

three.barrel

1）Material:45#Steel as the matrix,∞The inner hole adopts high-quality double alloy lining;

2）One section of the cylinder is the feeding cylinder, the sixth section is the natural exhaust cylinder, and the ninth section is the vacuum pumping cylinder

The remaining cylinder bodies are closed cylinder bodies;

3）The cylinder adopts soft water cooling;

4）The cylinders are connected by internal hexagonal strength bolts.

5）Heating section: The feeding area is not heated, while other areas use high-quality cast aluminum heaters.

Four.Soft water cooling system

1）Cooling water pump power

2）The soft water pipe is separated from the machine body for easy cleaning and maintenance;

3）Automatic water control solenoid valve, needle valve control;

4）0.55m3Cooler:1The platform.

five. Vacuum pumping system:

1）Vacuum pump;

2）The vacuum water tank is made of stainless steel material;

3）Independent external type, easy to clean and maintain

six.Network switching system

1)Hydraulic blocking automatic screen changing: dual station; Equipped with two porous plates; Including screen changers, hydraulic stations, hydraulic cylinders, etc.

7、 Water bar auxiliary machine:

1）Sink: one, widened and deepened, with a stainless steel tank body;

2）Suction dryer: One unit, with stainless steel material in contact with the material.

3）Cantilever granulator: one, with slip speed regulation; The cutting edge of the pellet cutter is made of tungsten steel material

4）Extended vibrating screen: one unit,L=2.5mThe motor adopts:Vibration motor;The vibration level can be adjusted in size:Motor power rate:0.55KWtwo units;The vibrating screen mesh adopts a three-layer separation material;Large hole diameterφ8mm, small hole diameterφ2.5mmMade of stainless steel and cooled by air cooling;Cooling motor power:0.75kw；

5）Wind blown silo: one set,1m3One storage bin, made of stainless steel material; adoptφ130mmStainless steel pipe connection;3kwMaterial conveying fan.

6)One set of host control cabinet;One set of auxiliary control cabinet

Process setting

Segments and functions

Screw is generally divided into conveying section, melting section, mixing section, exhaust section, and homogenization section5A paragraph.

1Conveying section, conveying materials to prevent overflow.

2Melting section, which uses heat transfer and frictional shear to fully melt and homogenize the material.

3The mixing section further refines and homogenizes the size of material components, forming an ideal structure with distribution and dispersion mixing functions.

4The exhaust section discharges impurities such as water vapor and low molecular weight substances.

5In the homogenization (metering) stage, conveying and pressurization are carried out to establish a certain pressure, so that the material at the mold mouth has a certain density, and further mixing is carried out to achieve the goal of smooth extrusion granulation.

Functional differences

1Distribution mixing is used to divide and recombine the melt, resulting in uniform spatial distribution of each component. This is mainly achieved through displacement flow under stress such as separation, stretching (alternating compression and expansion), twisting, and reorientation of fluid activity.

2Disperse and mix components to break them into small particles or disperse incompatible two components to the required size range, mainly achieved by shear pressure and tensile stress.

Conveying components

1. Representation: such as“56/56”Conveyor block, previous one”56”Guide Cheng for56MM,the latter”56”Refers to a length of56MM.

2. Large lead refers to a pitch of1.5D~2D

3. Small lead refers to a pitch of0.4D左右。

4. Its usage pattern: As the lead increases, the screw extrusion amount increases, the material residence time decreases, and the mixing effect decreases.

5. In situations where large lead threads are used and conveying is the main focus, it is beneficial for lifting; Thermally sensitive polymers shorten residence time and reduce degradation; At the exhaust point, shallow grooves are also used to increase the surface area, which is conducive to exhaust and volatilization.

6In the selection of medium lead thread applications, where mixing is the main method, different combinations of gradually shrinking working sections are used for conveying and boosting.

7When selecting small lead threads, they are generally gradually reduced in combination and used for the conveying section and homogenization metering section to increase pressure and melt; Improve the degree of mixing and extrusion stability.

Scope of use of twin-screw extruder

PSPlastic(polystyrene)English name:Polystyrene

ABSPlastic(acrylonitrile-butadiene-styrene)

POMPlastic polyoxymethylene)English name:Polyoxymethylene(Polyformaldehyde)

PPPlastic(polypropylene)English name:Polypropylene

PEPlastic(polyethylene)English name:Polyethylene

polyvinyl chloridePVCEnglish name:Poly(Vinyl Chloride)

PAPlastic(nylon) (Polyamide)English name:Polyamide

PCPlastic(Polycarbonate)English name:Polycarbonate

PPOPlastic（MPPO）(Polyphenylene ether)English name:poly(phenylene oxide)

PSUPlastic(polysulfone)English name:Polysulfone

PTFEPlastic(F4) (Polytetrafluoroethylene)English name:Polytetrafluoro ethylene

PPSPlastic(Polyphenylene sulfide)English name:Phenylene sulfide

……….Waiting for plastic processing modification granulation

填充改性，如 PE、PP、ABS、PC、EVA 等填充 CaCO3、Talc、TiO2 等；

Process Flow

Twin screw plastic granulator process; Raw material weighing------ratio----Mixing machine----Spiral automatic feeding machine------Twin screw granulator-------Cooling water tank-------Hair dryer-------pelletizing