What is the reason for continuous punching of mechanical punch press

The phenomenon of continuous punching occurs in mechanical punch press,where the mold has not completely exited before the punching machine presses down again,causing deformation of the workpiece.This may be due to various reasons.The following is a detailed analysis of the reasons for continuous punching of mechanical punch press:
1、Proximity switch malfunction

The mechanical punch press starts to punch continuously at the beginning of operation,which may be due to insensitive proximity switches or malfunctions.The proximity switch is responsible for detecting the position of the mold.If its sensing head is not in the correct position or the installation screw is loose,it may cause inaccurate judgment of whether the mold has completely exited,thereby triggering continuous flushing.You can check whether the installation screws of the proximity switch are loose and whether the position of the sensing head is correct.The position of the sensing head should be approximately 1-2 millimeters away from the sensing plate.When the upper mold of the mechanical punch reaches the bottom,it is better for the indicator light of the proximity switch to just light up.If there is a problem,the proximity switch should be adjusted or replaced in a timely manner.

2、Clutch issue

Clutch jamming or loosening,as well as long-term use of clutch springs causing distortion and compression deformation,may result in the inability to reset in a timely manner during operation and lock the lifted mold,causing continuous impact.It is necessary to check and adjust the clutch to ensure that it can be reset normally.If the clutch spring material is not good or has undergone severe deformation,it should be considered to replace it with a new spring.

3、Circuit malfunction
The contact of the relay controlling the air valve is stuck,which may accidentally cause the air valve to be electrified and result in continuous flushing.Relays can be inspected and replaced under the guidance of the manufacturer to ensure proper circuit control.Or there may be high-power signal interference sources nearby(such as welding machine power supply,plasma equipment,etc.)or static electricity in the equipment itself,which may also cause continuous punching of mechanical punch press.You can check if there are high-power signal interference sources nearby,and if so,ask a professional electrician to provide signal isolation or shielding measures for the equipment.If the equipment has static electricity,an electrician should be asked to safely ground the equipment or control system to dissipate the static electricity.
4、Mold wear and tear
The molds of mechanical punch press are prone to wear and tear after prolonged use,especially when there is a significant difference in the number of times the upper and lower molds are used,which can result in poor fit and lead to continuous punching.Everyone can regularly check the wear of the mold and replace the severely worn mold in a timely manner to ensure the stability and accuracy of the stamping process.
5、Improper operation
Operators who do not follow the specifications when operating the punch press,such as violating regulations or not using specialized tools,may also lead to continuous punching of the mechanical punch press.We can strengthen the training and education of operators to ensure that they are familiar with the operating procedures and safety requirements of the punching machine.At the same time,establish strict safety management systems and operating procedures,and impose severe penalties on illegal operations.
In summary,the causes of continuous punching phenomenon in mechanical punch press may involve multiple aspects such as proximity switch failure,clutch problem,circuit failure,mold wear,and improper operation.In order to effectively avoid the occurrence of continuous punching,it is necessary to regularly inspect and maintain the punching equipment,strengthen the training and education of operators,and strictly follow the operating procedures for operation.