Piston ring automatic sand drop ring device

Abstract

The invention discloses an automatic sand-shakeout and ring-stripping device for piston rings. The automatic sand-shakeout and ring-stripping device for the piston rings comprises a sand cleaning mechanism, wherein the sand cleaning mechanism comprises a sand loosing device used for loosening the molding sand at the riser end of a casting, a sand suction device for sucking sand after loosening and a sand box positioning device; the sand-shakeout and ring-stripping mechanism is arranged on one side of the sand cleaning mechanism and the sand-shakeout and ring-stripping mechanism comprises a sand-shakeout manipulator, a ring-stripping manipulator, a ring-stripping discharge head, a sand-shakeout air-hammer and a sand ring sieving device, wherein the sand-shakeout manipulator is used to grab and carry sand boxes; the ring-stripping discharge head is fixed on the sand-shakeout manipulator and is used for selectively extruding the piston ring on the casting; the ring-stripping manipulator is arranged on the sand-shakeout manipulator and can move along a vertical direction relative to the sand-shakeout manipulator; the ring-stripping manipulator is used to grab a casting riser that passes through a bore through a riser; the sand-shakeout air-hammer is arranged in a sand-shakeout position and is used for selectively impacting sand box; the sand sieving device is arranged below the sand-shakeout air-hammer and is used for receiving and separating molding sand and piston rings. The automatic sand-shakeout and ring-stripping device for the piston ring can realize automatic sand-shakeout and ring-stripping, the operation efficiency is high, and the operation strength is low.

Description

technical field [0001] The invention relates to the technical field of automatic production equipment, in particular to an automatic sand and ring falling device for piston rings. Background technique [0002] Piston ring is one of the key parts of internal combustion engine. In the casting production of piston rings, the casting of piston ring blanks is usually carried out in the way of multi-box integral casting. When the casting is cooled to a certain temperature (the maximum temperature of the casting at this time is still 300-400 degrees Celsius), it is necessary to perform a sand removal operation on the sand box with the casting to facilitate the removal of the casting. This process is called shakeout. After removing the molding sand, it is necessary to separate the cast piston ring blank from the casting runner. This process is called drop ring. In the casting process, the molding trolley is usually used as the carrier of the sand box. [0003] At present, the com...

AI Technical Summary

Problems solved by technology

[0005] 1. Since the artificial sand falling ring and the casting are in the same place, and the castings that need the sand falling ring still have a relatively high temperature (the highest temperature is still 300-400 degrees Celsius) even after a period of cooling, and the on-site falling When sanding, the dust is relatively large, so the working environment is high temperature, high dust and high noise, and the environment is very harsh. Working for a long time will cause the operators to suffer from occupational diseases;

[0006] 2. Operators need to carry out sandboxes, molding trolleys, casting runners, and ring drop operations for piston ring blanks. After the sand drop operation, molding sand remains on the surface of the molding trolley and the inner wall of the sandbox, which needs to be cleaned manually , the workload is heavy, and the physical exertion is heavy, which is difficult for the human body to bear;

[0007] 3. The structure of the existing shakeout impact head is a motor-driven eccentric cam structure. This structure is used to hit the sand box for sand shakeout. Since the falling sand still maintains a high temperature, the temperature at the motor is too high , increasing the failure rate of the motor;

[0008] 4. When falling sand, there are often fallen piston ring blanks mixed in the molding sand, and workers need to sort them out from the molding sand filter, which is prone to mixed flow of different types of piston ring blanks

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