Punch operator fatigue judgement system and punch operator fatigue judgement method

Abstract

The invention discloses a punch operator fatigue judgement system, which comprises a safety light curtain on-off information module, a punch control module, a singlechip and a fatigue alarm module. The invention also discloses a punch operator fatigue judgement method. By calculating the difference between the time when the hands of an operator enter a safety light curtain and the time when the hands of the operator leave the safety light curtain, the singlechip works out the feeding rate of the operator to judge whether the operator is in a tired state or not, whether the operator is in an easy-to-fatigue time range or not is judged according to the working hours of the operator counted by the singlechip, and a corresponding alarm voice is emitted. The punch operator fatigue judgement system can effectively monitor the working state of the operator to prevent the tired operator to conduct dangerous operation, thus enhancing the safety of a punch.

Description

technical field [0001] The invention relates to the technical field of punch presses, in particular to a device and method for judging fatigue of punch press operators. Background technique [0002] With the continuous improvement of the automation of punch presses, safety issues have attracted more and more attention. In order to protect the safety of operators, safety gratings have become an important device for the safety protection of punch presses. Safety gratings include infrared transmitters, infrared receivers and safety gratings. The on-off information module of the safety grating is electrically connected to the infrared transmitter and the infrared receiver respectively. During the downward stamping process of the slider, when the infrared ray is blocked by the operator's hand, the on-off information module of the safety grating sends a signal to The punch press control module, the punch press control module forces the punch press to stop running. [0003] As the...

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Problems solved by technology

[0003] As the production division of enterprises becomes more and more clear, assembly line operation has been implemented in a large number of enterprises. Operators often only need to repeat the operation of a single process. Repeating the operation of a single process in this way often easily causes operator fatigue, especially in the process of punching. In the process, the operator puts the billet into the punch table when the slider rises. The slider is a mold component that can slide perpendicular to the direction of opening and closing the mold or at a certain angle to the direction of opening and closing the mold during the mold opening action. After the block stamping is completed, the operator takes out the stamped and formed product and puts in a new blank. Such repeated operations can easily cause operator fatigue. After the operator is tired, it is easy to make dangerous operations. However, the safety of existing punching machines The grating can only control the punch press when the operator makes a dangerous operation. For example, when the operator puts his hand on the punch press table when the slider is punching downward, the safety grating on-off information module controls the punch press to stop. Only when the dangerous operation occurs Safety protection can only be carried out when the operator is tired, and it cannot prevent dangerous operations due to operator fatigue. Once the safety grating fails, it is very easy to cause personal injury, which will undoubtedly reduce the safety of the punching machine.

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