1. Overview

 

EPE pearl cotton foaming machine is a special equipment used to produce EPE pearl cotton sheets. It melts the DPE resin and mixes it with other additives such as butane, talcum powder, anti-shrinking agent, etc., extrudes through an extrusion mechanism, and foams in the die head and die lip part, and finally passes through the wind ring and the shaping ring to cool and expand into Fixed-size pearl cotton sheet, the final product is taken up by a take-up roller.

 

Main components of EPE foaming machine

 

1. Feeding section: The two ends of the feeding section are respectively connected to the barrel and reduction box, and the raw materials are fed into the extruder from this part. Including hopper, screw, barrel, extruder main motor and other parts, the AC motor is connected with the main screw through the reduction box.

 

2. Plasticizing heating section: This part is equipped with a high-power heating ring, which will melt the DPE resin particles and push the melted resin forward through the screw.

 

3. Forming heating section: This part is equipped with heating mechanism and cooling device to gradually cool the plasticized raw material until the raw material is extruded through the screw. In addition, it also includes butane pump and anti-shrinking agent pump (glycerolipid part). The shrinking agent pump heats the anti-shrinking agent into the barrel at a pressure of 10-15Mpa (100-150mm/cm2). The feed parts of the butane pump and the anti-shrinking agent pump are equipped with a one-way valve to prevent the raw materials from flowing backward to ensure production safety.

 

4. Die head part: the melted raw material is extruded from this part. The raw material begins to foam as soon as it passes through the die lip. The thickness of EPE pearl cotton sheet depends on the die lip and the pulling speed.

 

5. Shaping drum: The width of EPE pearl cotton sheet is determined by this part, and cooling air is provided in this part through a fan.

 

6. Traction roller: The sheet stretched by the sizing drum enters this part for traction. At this time, the traction speed should be balanced to ensure the quality of the sheet. The traction roller is equipped with a variable-frequency motor to adjust the traction speed.

 

7. Indexable take-up roll: This part is equipped with a meter counter that can set the length of the sheet. When the length of the first roll reaches the set requirement, the second roll can be turned 180° to start to rewind the sheet.

2, EPE foaming machine workflow

 

After the machine is ready, the first step is to heat up, adjust the pulse width of the heating ring to the maximum power output, so that the barrel is heated to the set temperature, and at the same time, heat the glycerolipid pot to the set temperature; the second step, start feeding The material motor is set at a low speed, and at the same time, butane and glycerin are added according to the formula; the third step is to cool down, open the second-stage barrel cooling water electric regulating valve to cool the second-stage barrel to the set temperature; The fourth step is to adjust the die opening and the amount of glyceride; the fifth step, production, open the active traction device and the material receiving mechanism, and start foaming production; the sixth step, stop the heating system, the main motor, the butane pump and the glyceride Pump; The seventh step is to stop the traction system and the receiving system.

 

3. Features of Yidrive CV3100 series inverter

 

1. V/F control mode (one drive multiple) A. Advanced vector control algorithm, optimized SVPWM output, low output harmonics and small motor temperature rise. B. Realize optimal energy-saving operation through motor parameter detection.

 

2. Open-loop vector control (SVC) mode A. Using TI high-speed motor control dedicated DSP processor, it can complete complex vector calculations at high speed and accurately, and achieve complete decoupling of the motor. B. Using advanced motor model algorithm, 0.5Hz can output 150% rated torque, stable speed accuracy 0.5%, speed regulation range 1:100.

 

3. Simple PLC completes up to 16 speed control;

 

4. Built-in PID can easily form a closed-loop control system, which is suitable for process control systems such as pressure and flow.

 

5. The standard RS485 interface supports MODBUS communication protocol, and can communicate with the host computer such as touch screen, PLC, etc.

 

6. Complete protection measures can protect nearly 20 kinds of faults such as overvoltage, undervoltage, input phase loss, output phase loss, overload, overheating, overcurrent, external terminal failure, communication failure, current detection error, motor tuning failure, etc. , Higher reliability.

 

7. The CV3100 series inverter is small in size, and it is fully wall-mounted for machines below 280KW, which is convenient for the installation of GGD cabinets, looks beautiful and atmospheric, and is safe and reliable to use.

 

4. Use the easy-drive CV3100 series frequency converter to be used in the EPE pearl cotton foaming machine, which reduces the system energy consumption, saves operating costs, and saves energy and environmental protection.