Punching machine double valve automatic detection safety circuit

Abstract

The invention relates to a punching machine double valve automatic detection safety circuit which comprises a PLC controller, four intermediate relays, a self-locking protection relay and two duplex solenoid valves; the two duplex solenoid valves are respectively represented by YV1 and YV2; YV1 is connected in parallel with a fourth wire coil KA4; YV2 is connected in parallel with a fifth wire coil KA5; a first self-locking normally open contact point KA1-1 is connected in series with a first coil KA1; a sixth self-locking normally closed switch KA1-2 is connected in series with all control power sources of a punching machine. The sixth self-locking normally closed switch KA1-2 is also connected in series with a branch between a power source +24V and a grounding end. All control ports of the PLC controller are respectively in signal connection with a second wire coil KA2, a third wire coil KA3, a first wire coil KA1, a four normally open contact point KA4-1, a fifth normally open contact point KA5-1, a second normally open contact point KA2-1, and a third normally open contact point KA3-1. The structure of the safety circuit can help improve safety.

Description

technical field [0001] The invention relates to the technical field of a punch press protection circuit, in particular to a punch press double valve automatic detection safety circuit. Background technique [0002] A punch press is a stamping press. In national production, the stamping process has the advantages of saving materials and energy, high efficiency, low technical requirements for operators, and the ability to produce products that cannot be achieved by mechanical processing through various mold applications. Its use is more and more extensive. Stamping production is mainly for plates. Through the mold, blanking, punching, forming, deep drawing, trimming, fine blanking, shaping, riveting and extrusion parts can be made, which are widely used in various fields. Such as our commonly used switch sockets, cups, cupboards, dishes, computer cases, and even missile aircraft... There are a lot of accessories that can be produced by punching through molds. There are mor...

AI Technical Summary

Problems solved by technology

[0003] 1. On the punch presses from the original factory, YV1 and YV2 are double valves that control the safety of the punch press. If the double valves are activated, the punch press will operate; The punching machine rushes down in an out-of-control state, causing a safety accident;

[0004] 2. If the punching machine has leakage or other circumstances, the YV1 and YV2 double valves are accidentally powered on, the punching machine will also rush down, causing an accident, so it needs to be improved

Images