Crest welder guide rail width closed-loop control system

Abstract

The invention discloses a crest welder guide rail width closed-loop control system comprising a guide rail width regulating mechanism, an electric regulating assembly, a guide rail width measuring assembly, a programmable logic controller and a touch liquid crystal display screen. The guide rail width regulating mechanism comprises a first fixed block, a second fixed block, a third fixed block, a fourth fixed block, a fixed guide rail, a movable guide rail, a first polished rod, a first regulating screw, a second polished rod and a second regulating screw. The first regulating screw is in threaded connection with a first screw nut, and the second regulating screw is in threaded connection with a second screw nut. The electric regulating assembly comprises a first synchronous pulley, a second synchronous pulley, a variable-frequency and variable-speed motor and a frequency converter. A synchronous belt is connected across the first synchronous pulley and the second synchronous pulley. The guide rail width measuring assembly comprises an encoder and a reduction gear, and the reduction gear is connected with a multi-turn potentiometer. The crest welder guide rail width closed-loop control system is convenient to operate, is conductive to the increase of welding efficiency, and effectively improves the precision of crest welder guide rail width detection and control.

Description

technical field [0001] The invention belongs to the technical field of wave soldering machine guide rail width control, and in particular relates to a wave soldering machine guide rail width closed-loop control system. Background technique [0002] In the production process of printed circuit boards, the pinned components are assembled by plug-in technology. Firstly, the components are automatically or manually inserted into the corresponding position of the printed circuit board on the plug-in production line, and then the printed circuit board is transported to the wave soldering machine by the conveying mechanism for soldering. The wave soldering machine adopts a built-in or an external spray system to evenly spray the flux on the printed circuit board, preheat the temperature through the preheating system, and then solder through the tin furnace. After rapid cooling through the cooling zone, the tin changes from liquid Solidify into a solid state, so that the component ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the control of the distance between the guide rails of the wave soldering machine mostly adopts manual adjustment, and the accuracy of manual control is low. In addition, some are equipped with a measuring device for the width of the guide rails of the wave soldering machine. The disadvantage is that the control and measurement are set separately, and the operation It is inconvenient, and consumes a lot of manpower and material resources, which reduces the welding efficiency

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