In order to adapt to the needs of teaching, to make students
master the application of PLC in the industrial automatic production line, Dolang
developed many PLC-based teaching equipment of production Line. Our automation
production line integrates a variety of technical knowledge, such as pneumatic
control technology, mechanical technology, sensor application technology, PLC
control and networking, stepper motor control and inverter technology to
simulate a very close to the actual production control process. Now we
introduce the automatic production line teaching equipment structure, working
process and PLC control realization. With PLC to control the automation of
production lines such a more complex production equipment, is the ideal choice. (More PLC trainer information, please visit http://www.dolangeducation.com/plc-training-series/)
The structure of the automatic production line teaching equipment.
Automatic production line installed in the aluminum alloy rail training
platform, from the supply station, assembly station, processing station,
transmission station and sorting station composed of five workstations, the
composition of the structure such as Figure 1 shows. The workstation are set up
a Siemens S7-200 series PLC to assume its control tasks, the specific model of
the PLC marked on the map. In addition, the aluminum electrolytic capacitor
assembly automation production line equipment is a set of semi-open type of
equipment, the user to a certain extent, according to their own needs to select
the number of units composed of equipment, type, up to five workstations, Can
be self-contained as a separate control system.
The workstations in the equipment are placed on the training
platform to facilitate the demolition and installation of various mechanical
parts and pneumatic components, control wiring, pneumatic solenoid valves and
tracheal installation. Among them, the conveyor station uses the most flexible
disassembly module structure: the composition of the unit button / indicator
module, power module, PLC module, stepper motor driver modules are placed in
the drawer module placed on the shelf between 1 modules , The module and the
training platform between the terminal block connection using secure wire
connection, to meet the requirements of a comprehensive training to the
maximum.
Automatic production line training teaching equipment work flow:
feeding station for the material, the aluminum shell (by the black and white
two colors of plastic parts instead) automatically sent to the material table,
by the transport station of the robot will be caught aluminum shell To the
assembly station of the material table, the assembly station will be prime
(replaced by small cylindrical plastic parts) embedded aluminum shell after the
assembly, and then by the transmission station of the robot will be assembled
with a good workpiece to the processing station under the stamping mechanism to
complete a stamping After the machining operation (the closing of the colloidal
particles), and then the workpiece is picked up by the robot of the conveyor
station. The conveyor belt sent to the sorting station is sorted. The finished
product is sorted to make the finished black and white workpieces From
different troughs. The conveyor station is an automated production line that is
important and is also responsible for the work of the complex value of the
workstations, the robot is a can achieve four degrees of freedom movement (ie,
rise and fall, out of retraction. Clamping release and rotation) Which is
mounted on the slide plate of the stepper motor drive unit and is reciprocated
by the drive assembly to precisely locate the material table of the designated
workstation. The workpiece is transported to the designated location on the
material table. lay down. The stepper motor is driven by a stepper motor
driver. The pulse signal and the driving direction signal are controlled by the
PLC of the conveying station. In the sorting station, the asynchronous motor is
used to drag the conveyor belt to convey the material. The speed and direction
of the asynchronous motor are controlled by the integrator, and the start and
stop of the inverter is controlled by the sorting station PLC.
Automatic production line teaching equipment control system using
STEP Micro / WIN V4.0 programming software. This is a programming tool designed
specifically for the Siemens S7-200 series of small PLCs, providing a good
programming environment for users to develop, edit and monitor their own
applications. It is easy to learn, to solve the complex automation tasks, while
supporting STL, LAD, r, '8D three programming language officer, the user can
according to their own preferences at any time between the three switches, the
package provides no room to help Function, even if the beginner can easily get
started, including multi-language official package, you can easily switch
between the language version, with password protection, to protect the code
from others operation and destruction. The use of the software can be prepared
according to the requirements of the control system to complete the control
program with the PLC real-time communication, the program download and upload
and online monitoring.
PLC control system communication
S7-200 communication interface for the RS-485, the communication
protocol using the PLC comes with standard PP! Protocol for data communication.
In the use of PPI protocol for communication, only a PLC or other equipment as
a communication initiator, known as the master station, other PLC or equipment
can only passively pass the meal or receive data, called the slave. In the
aluminum electrolytic packed container assembly automation production line, 5
PLC control 5 workstations, so need to set up five PLC network, to achieve 5
PLC data transfer between the completion of automated production line automatic
control. In the network, specify the rotation station as the master station,
the remaining stations for the station. Each PLC through the RS-485 serial
communication to achieve interconnection, constitute a distributed control
system. More production line training system please visit http://www.dolangeducation.com/mps-training-series/
