The horizontal molding machine jars and solidifies the sand by filling the sand box with sand, and then the workbench lifts the sand box and the sand to a height and allows it to fall freely. The workbench collides with the machine body. When hitting. The falling speed of the molding sand becomes a significant impact force, which causes the sand layer on the surface to be compacted, and 1 is its impact structure. At the beginning of the shock, compressed air passes through the cavity in piston 1, passes through the annular gap on the cylinder wall, enters the cylinder through the air inlet port 2, and the air pressure inside the cylinder rises, pushing the piston upward. The piston rises up at an interval of 5. Afterwards, the air path is blocked and the cylinder no longer takes in air. The interval between piston movements is called the intake stroke.

At this point, because the air pressure in gas U is still relatively high, it expands while driving the piston to continue rising. The piston passes through a short interval S again; Afterwards, open the exhaust hole 3, and the compressed air in the cylinder will be quickly discharged. At this point, the air pressure in the cylinder decreases, but the piston still has an upward tendency and continues to rise.

Inertia causes the piston to rise for a further interval, but the rising inertia loses and begins to fall. When falling, close exhaust port 3 first until the piston collides with the workbench at a considerable speed. At this point, the intake port is opened and the cylinder begins to intake air again. The rebound effect of the shock strike workbench when it is hit, coupled with the effect of the internal air pressure, causes the weight of the piston and workbench to rise again, and a new cycle begins again after the strike cycle ends. Form a repetitive strike.

The scanning electron microscope image of the compacted green sand of the high-pressure molding machine shows the beginning and continuity of sand particle cracking, and makes quantitative comments. By achieving the critical compaction density through the effect of critical compaction pressure, the batch of particles begins to crack.

Some important factors that affect this process are the sharpness of sand particles, hardness, and mold size. Know and prohibit the critical compaction pressure exceeding the molding machine. Described their interrelationships.

The scanning electron microscope image of the compacted green sand of the high-pressure molding machine shows the beginning and continuity of sand particle cracking, and makes quantitative comments. By achieving the critical compaction density through the effect of critical compaction pressure, the batch of particles begins to crack. Some important factors that affect this process are the sharpness of sand particles, hardness, and mold size. Know and prohibit the critical compaction pressure exceeding the molding machine.

Reasons for air leakage in the horizontal molding machine:

1. The horizontal molding machine pipeline is damaged, especially in winter when the molding machine pipeline is easily broken, resulting in air leakage in the molding machine pipeline.

2. We purchased defective air valves without using good pneumatic components.

3. The cylinder processing of the molding machine is unqualified or the workshop fitter is not grinding finely.

4. The horizontal molding machine's air pipe clamp is not installed properly, resulting in air leakage from the air pipe.

5. The air pressure of the air compressor is too low, resulting in airflow backflow.

6. The air compressor has water in its air circuit, which may cause blockage in the muffler and cause air leakage.