Fast heating intelligent leadless welding table controller and control method thereof

Abstract

The utility models relates to a fast temperature-rise intelligent controller for the leadless welding platform, of which the digital PID temperature-control is adopted via the one-board computer. The controller comprises a thermocouple amplifying circuit, a cold junction compensation circuit, a one-board computer, a temperature excursion and trouble detect circuit, a buzzer warning circuit, a relay, a relay driver circuit, a silicon controlled zero-cross trigger circuit, a LED nixie tube display circuit, a rectifying voltage regulator circuit and a keyboard entry circuit. The thermocouple amplifying circuit is composed of the resistances (R9 swung dash R12), a capacity (C4), and a operational circuit (IC2A); the cold junction compensation circuit consists of the resistances (R4 swung dash R8), a diode (D5) and a adjustable resistor (P1); the temperature excursion and trouble detect circuit is composed of the resistances (R13 swung dash R16), and a operational circuit(IC2B); the silicon controlled zero-cross trigger circuit is composed of the resistances (R21 swung dash R24), a silicon controlled optical coupler (IC4), a three-electrode tube (N4) and a silicon controlled rectifier (T) ; the LED nixie tube display circuit is composed of the resistances (R26 swung dash R35), the three-electrode tubes (N5 swung dash N7) and the nixie tubes (A1 swung dash A3).

Description

technical field [0001] The present invention relates to a fast-rising intelligent lead-free soldering station controller and a control method thereof, which relate to a rapid-heating intelligent lead-free soldering station controller and a control method using a single-chip microcomputer for digital PID temperature control. It belongs to the field of soldering electric iron. Background technique [0002] Electric soldering iron has a large range of applications in the industrial production of electronic industrial instruments and meters. For a long time, there has been a defect of slow heating and temperature difference. Especially with the wide application of lead-free soldering, the heating speed of traditional heating methods is far from satisfying. Welding requirements. Soldering irons suitable for lead-free soldering (including soldering irons) usually require a heating power of more than 90 watts, a smaller heat capacity, and a soldering iron tip with a faster heat co...

AI Technical Summary

Problems solved by technology

[0002] Electric soldering iron has a large range of applications in the industrial production of electronic industrial instruments and meters. For a long time, there has been a defect of slow heating and temperature difference. Especially with the wide application of lead-free soldering, the heating speed of traditional heating methods is far from satisfying. welding requirements

Soldering irons suitable for lead-free soldering (including soldering irons) usually require a soldering iron tip with a heating power of more than 90 watts, a smaller heat capacity, and a faster heat conduction speed, making it difficult to control the temperature of the soldering iron tip accurately.

At the same time, because of the large heating power and small heat capacity of the soldering iron tip, when a fault occurs, the soldering iron tip can burn red and burn out in a short time, reaching more than 80 or 900 degrees, which is prone to accidents

When the soldering iron tip is not in use, empty burning will greatly shorten the service life

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