Analyze the hydraulic system of the hot press

- Mar 20, 2020-

The hot press manufacturer tells you that the hydraulic system of the hot press has two basic working requirements. Apply pressure to the workpiece and drive the hot platen to end a specific movement. Quick closing and holding pressure stability are important goals for identifying the function of hydraulic systems.

Because the heating and curing of the glue during veneering should be completed at the dwelling stage, a fast closing speed is beneficial to the process and power. On the one hand, it can reduce the heating of the slab under non-pressure and prevent the surface of the slab from excessive water loss. Causes warpage, and also prevents the pre-curing of the glue, reducing the quality of the veneer; on the other hand, it can shorten the auxiliary time and improve the productivity of the press. In order to make the press open and close smoothly, it is generally equipped with mechanical synchronization equipment or a hydraulic system that can be used to maintain synchronization.

The hydraulic cylinder is the central part of the hydraulic system. Most woodworking presses now use plunger hydraulic cylinders. Large-diameter cylinder plungers mostly use alloy casting, which is characterized by high hardness, thick hardness layer, scratch resistance, and better use function than carbon steel heat treatment plungers; small-diameter cylinder plungers are mainly made of hard chromium plated on carbon steel heat treated surfaces The surface hardness layer is thin.

Because hot presses generally require fast opening and closing speeds and accept impact pressure, the cylinder block needs to choose higher-strength materials. Regarding general small diameter and long stroke hydraulic cylinders, seamless thick-walled steel pipes can be selected for production. For some demanding cylinder bodies, casting or casting cylinders can be selected.

Generally, the working table of the hot press used for wood processing and furniture production is large. In order to make the pressure distribution uniform and the rationality of the structural placement, the multi-cylinder structure is mostly used.

The hot press itself presents many problems in the production of the hot press manufacturer, but a large part of it lies in the hydraulic system, such as oil leakage and the inability to maintain pressure. Many common sense and requirements about hydraulic systems cannot be described here-to the fullest extent but must be paid great attention in the selection.