Application Introduction

 

The Coating Machine is suitable for the production of PVC, Decorative Paint Paper and Solid Wood Veneer on the surface of various boards such as Wood, Aluminum-Plastic Profiles, and Foam Materials. Instead of the traditional paint process, it is used for the surface mount production such as Door Cover Line, Skirting Line, Gussets, Curtain Rods, Window Sills, Aluminum Alloy Doors & Windows, and Photo Frames. Using various forming pressure rollers to simulate the action of manual veneer, attach the surface decoration material to the surface of the base material. Generally, the center line or the highest point or the lowest point of the profile is selected as the starting point, and fix the position of the pressure roller along the profile surface contour point by point and in sequence to form the envelope of the profile.

 

This type of Coating Machine is a hot glue Coating Machine, uses solid glue，which is used after heating and melting in the hot glue box of the Coating Machine. Generally, the heating temperature of the coating glue is about 220 °C. Suit for sticking to Solid Wood Veneer and Decorative Paint Paper.

Equipment Structure and Operation Principle

 

The equipment is mainly composed of three parts, melting glue, gluing, conveying, which corresponds to three Frequency Inverters. The conveying part adopts a 1.5KW Inverter to drive two 0.75KW Motors. The temperature acquisition uses 7 PCS PT100 thermal resistances, the control and display part adopts Delixi CDC1-S32T-A economical PLC and CDH-B070E HMI. The expansion selects a 16-point relay output module CDC1-SE16DR and two CDC1-SE4PT multi-function temperature acquisition modules. 

 

Equipment Lists

Name	Model	Qty	Description
PLC	CDC1-S32T-A	1	Logic processing of the running process.
HMI	CDH-B070E	1	Users can set parameters and monitor status data through the touch screen.
Output Module	CDC1-SE16DR	1	Output point expansion for hosts with insufficient output points
Temperature Acquisition Modules	CDC1-SE4PT	2	Perform temperature measurement, support a variety of temperature measurement sensors
Frequency Inverter	EM61	3	Control the three-part motor of conveying, melting glue and gluing.

                                                                   

Operation Principle

 

The operation principle of the equipment is relatively simple. The main process requirements are that the linear speed of the conveyor belt and the rubber coating roller should be consistent, and the temperature change should not exceed ±0.5°C. For the former, the frequency can be calculated from the inherent mechanical parameters (wheel diameter, reduction ratio) through PLC and the HMI given speed, then written to the Inverter through real-time communication; the latter controls the heater through the PID command of the PLC, and the temperature control accuracy can reach ±0.1°C.

When starting up, the Frequency Inverter of the melting glue is limited by the temperature. If any one of the seven temperatures collected is less than the minimum temperature, the Frequency Inverter of the melting glue cannot be started.

 

Parameter wiring and debugging

 

   Parameter debugging

 

   For EM61 series inverter, the factory parameters can be suitable for most applications, so only five groups of parameters need to be set in this application.

 

Servo wiring parameters

Function code	Function name	Factory set value	Description
P0003	control method	1	Select terminal control
P0004	Method of Frequency Setting	0	Keyboard reference (communication input)
P0011	acceleration time	5.0	Control the acceleration and deceleration time of the motor
P0012	deceleration time	5.0	Control the acceleration and deceleration time of the motor
P4.1.02	Slave station address	According to the function	Melting frequency is 1 Gluing frequency is 2 Transmission frequency is 3

 

 

  For temperature control, If the application situation changes greatly, the factory PID parameters are not applicable and need to be self-tuning again.

 

  Device Wiring

 

 

 

 

 Solution advantage

 

The EM60 series cost-effective inverter is matched with DELIXI economical PLC and HMI to reduce costs for users and increase product competitiveness.

The PID self-tuning algorithm of PLC is mature and stable, and one-key self-tuning can get all the gain parameters of the PID, which greatly saves the debugging time.

A large amount of upgrade space is reserved for users to upgrade and transform in the future.