Adjustable tray lifting device used for automatic stock bin

Abstract

The invention relates to an adjustable tray lifting device used for an automatic stock bin. The adjustable tray lifting device mainly comprises a workpiece clamping mechanism, a tray positioning mechanism and a tray lifting mechanism. The workpiece clamping mechanism adopts a three-rod-guided adjustable tray clamping technology. The tray positioning mechanism comprises needle bearing installation bases, needle bearings, an upper supporting base, a lower supporting base, a cylinder, an ejector head, a cylinder flange and a profiling block. The tray lifting mechanism comprises bottom plates, ejector polished shafts, linear bearings, a polished shaft upper fixing plate, ball screw nuts, a polished shaft lower fixing plate, ball screws, motors, bearing blocks, angular contact ball bearings, deep groove ball bearings and proximity switch supports. The bottom plates, the polished shaft upper fixing plate and the proximity switch supports vertically installed on the bottom plates are fixed through bolts, and fixation relative to the bottom plates is maintained. The adjustable tray lifting device has the advantages that the problem that use functions are affected due to large workpiece accumulative errors is effectively solved, production cost is reduced, high-efficiency energy conservation is achieved, the positioning position is precise, and the application range is wide.

Description

technical field [0001] The invention relates to a lifting device for adjustable pallets used in industrial automation production lines, in particular to a lifting device for adjustable pallets used in automatic silos, which belongs to the field of mechanical automation. Background technique [0002] With the intensification of the wave of globalization and the rise of domestic and international labor costs, the proportion of labor costs in the processing costs of mechanical products has become more prominent. Controlling costs and ensuring quality has become a key link that restricts enterprises, especially mechanical processing enterprises. Simply relying on improving the production efficiency of machinery and equipment to weaken the impact of labor costs is very limited. In order to reduce labor costs and realize short-term human supervision and long-term unmanned operation of products, the intervention of automated auxiliary equipment can free humans from monotonous and c...

AI Technical Summary

Problems solved by technology

[0003] In production, the size of the workpieces produced will be different, which requires adjustment of the storage station to meet workpieces of different sizes. Pallet silos, such as 16-station turntable silos and 20-station turntable silos, have the following main problems: ①The positioning accuracy of the processed parts on the pallet in the silo is low, so It will cause the loading and unloading manipulator in the process of loading and unloading, it may not catch the processed parts or touch the processed parts, so that the production line cannot be used normally; ② When the processed parts change, the feed bin The trays placed in the center need to be replaced, so a large number of trays need to be prepared to meet the needs of processing parts of different sizes;

[0004] ③The structure of the storage station is complicated, and the accumulative error of the parts required for the structure is relatively large. If the dimensional tolerance of the parts is guaranteed, the required production cost will increase a lot; the adjustment process is cumbersome, time-consuming and laborious; ④The pallet loading and lifting device uses an air cylinder Drive the lifting guide rod to move up and down or the sprocket on the motor drives the chain to rotate, and one end of the chain is connected to the tray to control the up and down movement of the tray

When using pneumatic lifting, when the workpiece and tooling are heavy, the thrust load capacity of the cylinder is unstable, and it is difficult to control the position accuracy; when using chain lifting, the noise is loud, the stability is poor, and it takes up a lot of space in the affiliated mechanism

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