Vent hole pricking device

Abstract

The invention discloses a vent hole pricking device, which comprises a mounting bracket, wherein the top of the mounting bracket is provided with a beam, the beam is provided with a cylinder, the piston rod of the cylinder is connected with a needle mounting plate, and the needle mounting plate is provided with multiple needles. When in use, a core is arranged below the needle mounting plate, and then the cylinder is driven, so that the needle mounting plate moves downwards so as to prickle multiple vent holes on the core by the needle. The device has simple structure, is convenient in use, and can prickle the multiple vent holes on the core once, thereby improving the vent hole prickling efficiency, lowering the labor intensity of workers, and effectively ensuring the quality of castings.

Description

technical field [0001] The invention relates to the technical field of casting molding, in particular to a device for piercing vent holes on a casting molding sand core. Background technique [0002] In the process of sand casting, it is necessary to drill vent holes on the sand core to draw out the gas in the sand core, which can avoid the generation of air holes in the casting and improve the quality of the casting. The way of piercing the holes manually with a piercing needle, this method can meet the requirements for a single sand core or sand core group, but in mass production, because there are too many positions and numbers of holes that need to be pierced, it is necessary to use The labor intensity of the workers is very high when the holes are punched manually, the production efficiency is very low, and the quality cannot be effectively guaranteed. At present, there is also a device specially used for piercing vent holes, but this device mainly adopts the structure...

AI Technical Summary

Problems solved by technology

[0002] In the process of sand casting, it is necessary to drill vent holes on the sand core to draw out the gas in the sand core, which can avoid the generation of air holes in the casting and improve the quality of the casting. The way of piercing the holes manually with a piercing needle, this method can meet the requirements for a single sand core or sand core group, but in mass production, because there are too many positions and numbers of holes that need to be pierced, it is necessary to use When punching holes manually, the labor intensity of workers is very high, the production efficiency is very low, and the quality cannot be effectively guaranteed

At present, there is also a device specially used for piercing vent holes, but this device mainly adopts the structure of a multi-axis drilling head, which is composed of a mandrel connected to other multiple support shafts through a gear pair, the structure is very complicated, and the manufacturing cost Big

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