Automatic monitoring and controlling system for mold punch needle breakage

Abstract

The invention relates to an automatic monitoring and controlling system for mold punch needle breakage. The automatic monitoring and controlling system for mold punch needle breakage comprises a moldmodule, a monitoring module, a press machine and a PLC control system, the mold module is connected with the press machine and the PLC control system through the monitoring module, wherein the mold module comprises several mold punch needles, the monitoring module comprises a power supply, signal input ports, a signal output port and relay units, a monitored position of each mold punch needle is connected with the corresponding signal input port, the power supply, the mold punch needles, the signal input ports and the relay units form a closed circuit, and the output ports of all the relay units are connected with the signal output port after being connected in series to communicate with the press machine and the PLC control system to form a closed loop. According to the automatic monitoring and controlling system for mold punch needle breakage, automatic real-time monitoring of the mold punch needle breakage anomaly is realized, moreover, a punch needle breakage signal is fed back intime, the production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a mold protector, in particular to an automatic monitoring and control system for mold broken punch pins, which belongs to the technical field of mold protection control. Background technique [0002] In the production of stamping, forging and fine blanking in the modern mold industry, semi-automation or full automation has been realized to varying degrees. The production process has gradually transformed from the early personnel-intensive industrial model to the automated production model of unmanned factories; from simple and single engineering molds to high-precision continuous molds, even large continuous molds, and multi-station manipulator transfer molds; The visual tracking operation was upgraded to the automatic monitoring and control technology of optical-mechanical-electrical integration. Therefore, in the field of automatic monitoring and control technology, more severe requirements and challenges are put forward fo...

AI Technical Summary

Problems solved by technology

[0004] However, for automated production systems in stamping, forging, and fine blanking industries, especially for industrial enterprises with high-speed automatic production such as thick material punching dies, continuous dies, high-strength steel product stamping dies, and multi-station transfer dies, thick material punching is easy. The problem of broken punching needles occurs. For punching small holes on some thick materials, the punching needles are weak due to their own strength, and the tensile strength, compressive strength and punching shear strength of the processed sheet are large. Needle breakage and tearing occur from time to time

At the same time, in the small hole punching process of drawing dies, shaping dies, trimming punching dies of some automobile panels with uneven stress or complex strains such as lateral tensile stress and compressive stress, the punching needles will The working conditions are complex and changeable, and it is more likely to cause frequent stress fracture or pull-off

Moreover, the breakage of the punch pins in the above situation is quite random and sporadic, and it is impossible to predict in advance which punch pins will break at what time and under what working conditions, and even unpredictable breakage occurs within the normal design life of the punch pins.

Because the broken punching pin of the mold was not discovered by the production line personnel in time, the dropped punching pin directly caused the template to break or even explode the mold, and the cost of mold repair or remake was huge.

At the same time, hundreds of thousands of semi-finished stamped parts were not discovered and were informed when they flowed to the downstream OEM customer production line for final assembly, and then spent a lot of manpower and material resources to rework in batches

The above problems have caused extremely significant economic losses and delays in order delivery to stamping manufacturers and final assembly customer OEMs. What is more serious is that some semi-finished products are directly scrapped because they cannot be repaired.

[0005] At present, for the above problems, the existing solutions are: firstly, the mold maintenance personnel shall carry out regular maintenance on the mold, replace the punching pins that may have potential fracture hazards in advance, and adjust the punching pins in advance when the design life of the punching pins has not been reached. Replaced in batches, causing a lot of punching needle consumables to be scrapped prematurely, unable to make full use of their due value and resulting in serious waste. Even so, it is still impossible to ensure when and under what working conditions the new punching needle will be replaced. The second is to artificially control the entire automatic production line to shut down after the mold punch breaks and is discovered by the production line inspection personnel, and then arrange the mold maintenance personnel to dismantle the mold for inspection and replace the broken punch pins and broken ones. Templates, etc., to select the stamped parts that were scrapped due to missed punching or broken molds. At this time, the fact that the batches of stamped parts in the process were not good, scrapped, molds were broken, and the press was broken. It is even possible that irreversible damage has been caused to the hardware of the press equipment itself, and the production cost is greatly lost

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