Automatic blanking and feeding device used for polishing workpiece

Abstract

The invention discloses an automatic blanking and feeding device used for polishing a workpiece. The automatic blanking and feeding device comprises a main framework and a transfer device arranged on the main framework and is used for transferring a workpiece to be blasted with sand, wherein a sand-blasting machine is arranged on the main framework; a spray gun is arranged in the sand-blasting machine; the spray gun is corresponding to the workpiece to be blasted with the sand, and the workpiece to be blasted with the sand is pressed by a pressing air cylinder on the transfer device; a sand storage box is arranged on the sand-blasting machine below the pressing air cylinder; an output device is arranged at the tail end of the transfer device; the transfer device and the sand-blasting machine are controlled by a controller for automatically feeding, blasting sand and blanking for the workpiece to be blasted with the sand. The device disclosed by the invention can be used for controlling the air cylinder to move back and forth to drive the workpiece to stably enter a sand-blasting zone at a constant speed; meanwhile, a plurality of workpieces are polished, so that the automatic blanking and feeding device is low in manufacturing cost, order in processing and high in efficiency.

Description

Technical field [0001] The invention relates to an automatic blanking and feeding device of a sandblasting machine, in particular to an automatic blanking and feeding device of a sandblasting machine installed on a main frame and processing workpieces. Background technique [0002] With the advancement of science and technology, the requirements for processing precision of precision weighing tools are getting higher and higher. There are many key processes in the production and processing of precision weighing tools involving valuables (such as gold, silver, jewelry, etc.), such as partial gluing and sticking of induction barriers. Workpieces that need to be partially glued and attached to the induction barrier must be locally polished for pasting, and the quality of polishing has a great influence on the roughness of the pasted surface. If there are pits, the uneven surface of the polished surface will result in uneven glue coating, which will have a great impact on the precisi...

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Problems solved by technology

[0004] The traditional sandblasting machine uses compressed air as the power. The compressed air flows through the spray gun to form a negative pressure, and the abrasive is ejected to the nozzle and sprayed at high speed to the surface of the workpiece to be treated. In the traditional processing technology, the worker needs to hold the induction resistance sheet to be pasted. The workpiece (hereinafter referred to as the workpiece to be sandblasted) is inserted into the sandblasting machine for sandblasting and grinding. Due to the high pressure of the sandblasting machine, the manual operation cannot keep the sandblasting angle and strength stable, resulting in uneven grinding. The qualified rate of workpiece finished product is low

These sandblasting machines are not fully automatic equipment, and cannot perform sandblasting on multiple workpieces at the same time. The production efficiency is low, and the processing is time-consuming and laborious. Moreover, the ejected abrasives cannot be effectively collected, causing dust to leak out, and it is easy to cause the accumulation of sand particles on the mechanism. The workpiece transmission is obstructed, which is likely to cause work accidents and affect the health of workers

[0005] At present, there are still some improved sandblasting machines in the industry. Although there is an automatic sandblasting process, the grinding accuracy required for a single workpiece cannot be guaranteed, and the level of automation is not perfect (such as emergency stop, blanking, etc.). The transmission speed is slow, the operation occupies a large area, and the sandblasting dust cannot be handled well.

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