With the increase in the scale of my country's construction market and the number of houses built, the demand for wall materials is becoming more and more vigorous. However, China's natural resource situation is more people and less land, the per capita cultivated area is far below the world average, and land resources are very valuable. Traditional wall materials-solid clay bricks require a large amount of land to be taken, and consume a lot of energy during the firing process, thus forming a contradiction between economic development and scarce resources. With the increasing promotion of new wall materials by the country, brick-making machinery manufacturers have begun to eliminate solid clay brick machines and produce energy-saving and environmentally friendly new-generation brick-making machinery. Block forming machine is one of them.

Process Brief

The raw materials used in the block forming machine can be sand, stone, cement, fly ash and various slag. According to the specific formula, the front-end mixer mixes the materials evenly and the humidity is suitable. The dry and hard concrete is sent into the hopper of the molding machine through the conveyor belt, and the molding machine can work. The cloth trolley advances the cloth while the pallet vibrates and the material falls into the mold. The fabric trolley moves backward, the upper die head is pressed down, and at the same time, the vibrator of the upper die head vibrates. When the time is up, stop the vibration. After a short delay, the mold rises, the die head rises, and the plate feeder advances the plate to send out the finished blocks. The board feeder retreats, the mold falls, and the cloth trolley begins to advance the cloth, and the second cycle begins.

Hardware Configuration

Input points mainly include: operation switches, travel switches, proximity switches, etc.

The output points mainly include: vibration motor, hydraulic motor, hydraulic solenoid valve, etc.

Input and output total about 60 points.

CPU module: CPU201-4001 1 set

16-point input and output module: DOM201-1601 1 set

Four-line LCD text screen: 1 set

Software design

The system software includes two parts: PLC program and text screen program.

PLC program can realize manual and automatic operation. Especially in automatic operation, the interlocking and interlocking of the mechanical parts are tight, which ensures the safe, reliable and stable operation of the molding machine.

The text screen program has many screens, which are mainly used for setting parameters, monitoring status, and alarm display.

Most imported components used in NA-PLC hardware fully guarantee product quality during the manufacturing process. The CPU has a fast calculation speed and convenient programming, which fully satisfies such occasions as the molding machine with high working intensity, high starting frequency and harsh on-site working environment. Compared with the foreign brand PLC, Nanda Auto PLC has a very high cost performance.