Molding sand clearing device for pneumatic cylinder cover inner cavity

Abstract

The invention discloses a molding sand clearing device for a pneumatic cylinder cover inner cavity in the field of cylinder cover machining and manufacturing. The molding sand clearing device comprises a rack, a support mechanism, an air pump and a silencing mechanism. The air pump is located at the top end of the rack. The support mechanism comprises a support plate and an installation plate. The support plate is located on the lower portion of the rack. The installation plate is located above a vibrating plate. A high pressure blower gun which is connected with the air pump is installed on the installation plate. A vibrating spring is arranged on the support plate. The vibrating plate is arranged at the upper end of the vibrating spring and provided with a vibrating motor and a limiting block. The vibrating plate and the support plate are both provided with sand dropping holes. The silencing mechanism is fixed to the side wall of the rack. A sand collecting box is arranged below the support plate. According to the scheme, molding sand remained in a cylinder cover is cleared up more thoroughly, and the sand dropping ratio is higher. The cylinder cove is buffered through the vibrating spring, so that the defects such as deformation or cracks caused by repeated blows of compressed air to the cylinder cover are effectively avoided, and the defective percentage caused by inner machining is lowered. Noise generated inside is absorbed and weakened through a sponge silencing layer, so that noise pollution is reduced.

Description

technical field [0001] The invention relates to the field of cylinder head processing and manufacturing, in particular to a device for removing molding sand in the cavity of a pneumatic cylinder head. Background technique [0002] The cylinder head is the fixed part of the diesel engine and a part of the combustion chamber. The fuel injector, the rocker shaft seat indicator valve, the intake and exhaust valves, etc. are installed on the cylinder head. There are intake and exhaust passages and cooling water inside the cylinder head. The cavity has a complex structure, many channels, and uneven wall thickness. The cylinder head is usually formed by sand casting. In the actual production process, the mold sand remaining in the inner cavity of the cylinder head needs to be removed after the cylinder head is formed. The sand-cleaning equipment of prior art is mainly made up of parts such as lathe bed, vibrating and striking mechanism, workbench, workbench supporting slide rail, ...

AI Technical Summary

Problems solved by technology

[0003] The prior art sand removal equipment has the following disadvantages: (1) It is difficult to effectively shake out the sand by relying solely on the vibration striking mechanism to hit the workpiece, and the sand out rate is low

(2) Since the workbench is fixed on the supporting slide rail, there is no buffer structure to absorb the impact force during the strike operation, so that the workpiece is prone to cracks when it is hit. On the one hand, it causes a high defect rate of the product, and on the other hand, it causes noise pollution

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