Overload protection system for crank press

Abstract

The invention discloses an overload protection system for a crank press. The overload protection system comprises a shell, a transmission mechanism, a stamping assembly and a driving unit, the transmission mechanism, the stamping assembly and the driving unit are all installed in the shell, the driving unit comprises a driving shaft, a crankshaft and an overload protection assembly connected with the driving shaft and the crankshaft, the driving shaft and the crankshaft are rotationally installed in the shell, the first end of the driving shaft is connected with the transmission mechanism, so that the transmission mechanism drives the crankshaft to rotate through the driving shaft and the overload protection assembly, the crankshaft is connected with the stamping assembly, and whether the driving shaft is connected with the crankshaft or not can be achieved through the overload protection assembly according to the loading force of the stamping assembly. The overload protection system has the beneficial effects that a traditional integrated driving unit is divided into the crankshaft and the driving shaft which are connected through the overload protection assembly, when the stamping assembly is in an overload state, the overload protection assembly disconnects the crankshaft and the driving shaft, and therefore overload protection is conducted on a driving motor on the transmission mechanism, and the driving motor is prevented from being overloaded and burnt.

Description

technical field [0001] The present application relates to the field of stamping equipment, in particular to an overload protection system for a crank press. Background technique [0002] Presses are widely used in blanking, punching, forming, stretching and other processes of sheet metal. Existing presses are generally classified into hydraulic or mechanical types, and the common press in the mechanical type is the crank press. In the actual stamping process, sometimes due to the wear and tear of the equipment, the positioning of the upper mold and the lower mold is incorrect, which leads to the inability of the upper mold to stamp the plate into the lower mold, which in turn causes the upper mold to be overloaded and stuck. For hydraulic presses, when the upper mold is overloaded and stuck, the hydraulic system will release pressure to protect the press. Since the mechanical type such as the crank press does not allow the operator to stand within a certain range when it i...

AI Technical Summary

Problems solved by technology

Since the mechanical type such as the crank press does not allow the operator to stand within a certain range when it is working, when the crank press is overloaded and stuck, the operator sometimes will not find the fault in a short time, resulting in The drive motor is overloaded and burned

[0003] At the same time, the feeding mechanism of the existing mechanical press is generally independent, so when the upper mold is overloaded and stuck, the feeding mechanism is still in the feeding state, resulting in overloading and burning of the feeding mechanism

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