Applied to 100 t hydraulic clamping machine PLC system configuration and process is introduced

a hydraulic machinery manufacturing company development of 100 t hydraulic clamping machine is to moulding equipment of various materials, widely used in rubber and plastic molding industry. The measurement and control system with KINCO - K3 series PLC controller ( CPU306) And touch screen as the core, which can realize hydraulic clamping machine automatic cycle of each action, manual adjustment and hydraulic system pressure and flow rate ( Speed) The automatic adjustment. Introduction of PLC

since the 1960 s the United States to launch a programmable logic controller ( 可编程序逻辑控制器,PLC) Since the device instead of traditional relay control, PLC got rapid development, has been widely used all over the world. At the same time, the function of PLC are continually improved. Along with the computer technology, signal processing technology, control technology, the development of network technology and the continuous improvement of user requirements, the PLC controller on the basis of switch process and increased the analog processing and motion control, and other functions. Today is no longer limited to the logic control of PLC, motion control, process control and other fields also plays a very important role.

a, system configuration,

5. 7 'monochrome touch screen as human-computer interface, equipment start-stop operation on the touch screen, for setting, pressure and flow data at the same time. Pressure sensor, the transmitter into 4 ~ 20 ma signal is connected to the PLC, electric valve adjusting the pressure and flow.

system configuration module:

switch quantity: KINCO - K306- Ar (1), 24 KINCO - K321 - 1 a, dt KINCO - K322- 16 xr 1.

moulding: KINCO - K331- 04 iv 1, collect pressure value.

mode: KINCO - K332- 02 iv 1, control of electric control valve.

PLC controller switch input:

the left cylinder return I0. 1 /钱数。 2 caps a I0. 3, the lower limit of a

flip open limit I0. 6 /钱数。 7 flip closed limit

flip lock back I2. 1 / I2。 2 under the workbench to launch in place

workbench ( Mobile oil cylinder) Back to limit I2. 4 positioning I2. 5 / I2。 6 ejection limit I2. 7.

PLC switch output:

the main oil cylinder fast rising Q0. 0 / Q0处。 1 / Q0处。 4 / Q0处。 6 pressure

the main oil cylinder slow down Q0. 0 / Q0处。 2 /。 3 q0处。 7, the main oil cylinder fast drop

flip open Q2. 0 flip closed

flip lock back to Q2. 2 fall prevention oil cylinder

workbench ( Mobile oil cylinder) Q2. 4, workbench ( Mobile oil cylinder) Back to the

positioning cylinder out of Q2. 6 hydraulic pump star Angle start

2, process

the oil pump start-up pressure after normal execution:

1, the automatic start to return oil cylinder to loosen, workbench ( Mobile oil cylinder) Out to lock the back flip, flip open to prevent falling oil cylinder back to the main oil cylinder slow down, clamping began to turn to the main oil cylinder fast rise, closed - flip lock out - workbench ( Mobile oil cylinder) Back to positioning cylinder out, prevent fall back to a pressure and time delay, the main oil cylinder fast rise to secondary pressure and time delay, the main oil cylinder fast rise to prevent falling oil cylinder Q2. 3 - end cut off.

2, 30 seconds if no action is the pump stop, to save electric energy.

3, each can be individually adjust the touch screen.

4, each movement speed can be set on the touch screen automatic speed control, a pressurized secondary compression pressure can be set on the touch screen, automatic voltage regulator.

3, system summary

this hydraulic equipment adopts PLC and touch screen system, can automatically adjust the pressure, the movement to flow ( Speed) Display can be adjusted respectively, intuitive and easy to operate, application characters suggest LCD touch screen to improve the grade of the equipment.

this control system can be applied to various kinds of hydraulic equipment.

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