Plc And Hmi In The Leisure Products Industry, Application
This article describes how to use the PLC programmable logic controller of the automatic
control and operation of the merits and with the perfect combination of man-machine interface, so that bending radius and the length of the adjustable parameters such as direct human-machine interface in PLC-operation and change procedures and parameters to achieve the purpose of running a flexible control equipment. To make operation more convenient and rich humanity. It fully reflects the industrial automation in the actual production of an important role.1, Introduction Bender leisure craft supplies and accessories industry in the production of key equipment, as product variety, shape changing, the corresponding bend the shape, size and size of different radius, in the previous production , the main hydraulic bending machine, manual bending machines, bending machines and other simple electrical, which mass production and product sizes are not appropriate to ever-changing. This article describes the bending machine is based on the actual production needs, self-development, development is made, and has been put into the actual production, produced a significant benefits.
2, system description The bending machine control system schematic shown in Figure 1, mainly by the PLC, inverter, sensors, human-machine interface, main motor and other components. The machine's main site, composed of eight group wheel, shown in Figure 2, one can also produce eight tubes, and increased efficiency. Main motor from the inverter control, wheel speed adjustable via HMI; tube bending radius by the Deputy Vice-motor deceleration control slider through the turbine, under pressure and rise; elbow length, radius and wheel speed, roll to adjust the number of parameters, human-machine interface can be adjusted very easily, rich humanity, PLC control equipment within the process is a key part of the automatic operation.
3, control mode Machine with manual operation mode and automatic operation mode.
3.1 Manual operating mode Close the power, man-machine interface to select manual operation mode, the mode for the adjustment of the machine or repair, and other special operating mode, sub-wheel forward and backward, slide up, down four states, operation were independent of each other.
3.2 Automatic operating mode Close the power source, the man-machine interface, select the auto-run mode, which for the normal production mode. Necessary to readjust the adjustable parameters (pipe length, radius, wheel speed, roll number), press the start button, immediately run automatically receive frequency inverter parameters to control the main motor from OHZ up to the frequency of operation, transfer to the wheel, while main and man-machine interface according to the adjustment of electrical parameters and the PLC internal program to run, spread wheel and the slider, the signal transmitted by the encoder generate PLC, control wheel rotating, the slider down, up, to produce qualified products.
4, the working principle Shown in Figure 2, the slider up, place tubes, slide under pressure to a certain height h, the main motor to drive the wheel rotation, according to the length of pipe L, calculated by the PLC X ring roller rotation required then reverse the X ring. Bending radius R according to the size of the slider points n times under the pressure, repeat n cycles, the wheel moves complete the product.
Production simply adjust adjustable parameters: tube length L, tube bending radius R and repeat the rolling number n, etc., by the PLC internal procedures, obtained by logical operation h, X and other parameters, according to the Lord, Vice motor encoder corresponding pulse signal generated by the operation of automatic control equipment.
5, concluding remarks Successfully developed the equipment, leisure goods and technology to solve a large volume and variety of ornament diversity issues, significantly improving productivity. Make operation more intuitive, full of humanity.
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