Because the fully automatic brick making machine has a large momentum under the hydraulic drive. At the end of its stroke, when the rod enters the end cover and bottom of the hydraulic cylinder, it will cause mechanical collision, resulting in greater impact and noise. The impact pressure is about twice the rated working pressure, which will inevitably seriously affect the hydraulic cylinder and the entire The strength and normal work of the hydraulic winding. The buffer device is to avoid this mechanical collision.
The buffer device in the automatic brick making machine can prevent and reduce the impact of the hydraulic cylinder piston, piston rod and other moving parts on the cylinder bottom or end cover during the movement process, and can decelerate to zero at the end of its stroke. Especially when the movement speed of the piston in the hydraulic cylinder is lower than 6m/min, the buffer device is generally not set up. When the movement speed exceeds 12m/m, the buffer device must be set up.
The working principle of the buffer device of the automatic brick making machine is that when the piston reaches a certain distance before the end of the stroke, it tries to close some or all of the oil, and through the orifice (or gap), the closed oil generates an appropriate buffer pressure and acts on the piston side. , against the inertial force of the piston to achieve the purpose of deceleration and braking. According to the structure of the buffer device, whether the flow area of ??the orifice (or gap) can be automatically changed during the buffering process.
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