Rotary die sand core withdrawing device of screw air compressor

Abstract

The invention discloses a rotary die sand core withdrawing device of a screw air compressor. The rotary die sand core withdrawing device comprises a top frame, a pulley, a motor and a support. The pulley is arranged on the upper side of the top frame, the support is fixedly connected with the lower side of the top frame, the motor is arranged on a side of the support, an output shaft is arranged at an end of the motor, a pulling rope is arranged on the lower side of the top frame, a bearing is fixedly connected with the lower side of the pulling rope, an end of the pulling rope is connected with the pulley, a side of the pulley is connected with the output shaft by the pulling rope, a rotary shaft is arranged inside the bearing and is provided with rotary ropes, and a fixture is connected with the lower sides of the rotary ropes. The rotary die sand core withdrawing device has the advantages that the rotary die sand core withdrawing device is simple in structure and novel in design, a die can be driven by the rotary shaft, the bearing and the fixture to rotate, materials can be rotationally discharged from the die under the rotation action of the fixture, the traditional material discharge actions can be replaced, accordingly, the labor cost can be reduced to a great extent, labor and the time can be saved, and the rotary die sand core withdrawing device has an excellent popularization value.

Description

technical field [0001] The invention relates to a production device, in particular to a mold sand core rotating and unloading device for a screw air compressor. Background technique [0002] The material used to make the core in foundry production is generally made of molding materials such as foundry sand, sand binder and auxiliary additives mixed in a certain proportion. Most of the core is surrounded by high-temperature liquid metal in the mold, and the size of the supporting and positioning part is generally small. Therefore, in addition to the performance of general molding sand, the core sand also requires high strength, air permeability, and yield. In the traditional sand core production, the sand core is formed in the mold and the mold cavity through the sand shooting machine, which is not easy to take out, and the mold needs to be destroyed before it can be taken out. This method is very inconvenient, and improper operation will cause sand. core damage. For this r...

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Problems solved by technology

Most of the core is surrounded by high-temperature liquid metal in the mold, and the size of the supporting and positioning part is generally small. Therefore, in addition to the performance of general molding sand, the core sand also requires high strength, air permeability, and yield. In the traditional sand core production, the sand core is formed in the mold and the mold cavity through the sand shooting machine, which is not easy to take out, and the mold needs to be destroyed before it can be taken out. This method is very inconvenient, and improper operation will cause sand. core damage

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