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Intelligent control method and system for wave furnace wave welding

An intelligent control system and intelligent control technology, applied in printed circuit manufacturing, printed circuits, electrical components, etc., can solve the problems of high manpower or man-hour input, more manpower or man-hour input, insufficient wave furnace and other problems

Active Publication Date: 2017-07-21
常州华睿电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the market demand is mainly in the form of small work orders and multiple models. Multi-model means that the specifications of circuit boards are diversified. At present, the production method in manufacturing enterprises is: one wave furnace corresponds to one specification of circuit boards. , that is to say, if you want to complete the production of multiple models, you need to configure a variety of wave furnaces, which will inevitably lead to the dilemma of insufficient wave furnaces, and on the other hand, it will also cause excessive investment in manpower or working hours; for example, patent number CN201320839463.8 Disclosed is a wave soldering production line that automatically adjusts the flux coating stroke according to the width of the PCB board, including a PCB board conveying trough at the front end of the wave soldering production line, a wave soldering tin dipping furnace, a wave soldering spraying device, and a control mechanism. The PCB board A connection table is added between the conveying tank and the wave soldering tin immersion furnace. One end of the PCB board conveying rail installed on the connection table is equipped with a set of PCB board width detection device, and the PCB board size is collected by the metal sensor of the PCB board width detection device. , the control mechanism of the wave soldering tin immersion furnace controls the PCB board width data obtained by scanning the drive circuit based on the width of the metal sensor, controls the wave soldering spraying device through the spray stroke drive circuit to drive the flux nozzle to move according to the measured width of the PCB substrate, and executes the inspection on the PCB board. Flux spraying, and then the immersion tin and wave soldering process of the PCB substrate are completed at the back end of the wave soldering tin immersion furnace. Although the welding change in the width direction is realized to a certain extent, for circuit boards with different lengths and sizes , but also need a variety of different wave furnaces, and need to invest more manpower or working hours

Method used

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  • Intelligent control method and system for wave furnace wave welding
  • Intelligent control method and system for wave furnace wave welding

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Embodiment 1: In view of the fact that the existing wave furnace can only be used for welding circuit boards of one specification, this example discloses the following technical solution, which can automatically adjust the jet height according to different products to meet the production of different products, without the need for multiple The wave furnace does not need to invest too much manpower and working hours.

[0033] Such as figure 1 As shown, a wave peak furnace wave soldering intelligent control system includes a wave peak furnace, and also includes a controller, a code scanning device, a fixture sensor, and a frequency converter; the wave peak furnace includes a conveying device, and the conveying device is provided with a plurality of Tool, the conveying device can be a conveyor belt, can be a conveying chain, in this example, the conveying device adopts a conveying chain;

[0034] The code scanning device is connected with the controller for scanning the j...

Embodiment 2

[0058] Embodiment 2: Different from the embodiment 1, the controller also includes a temporary storage unit; the temporary storage unit queries and stores the code according to the fixture code in the storage unit when the fixture code is input into the storage unit The motor frequency parameters in the unit and the motor frequency parameters are called and stored. This setting makes the control unit no longer directly search and retrieve data from the storage unit, but directly retrieves data from the temporary storage unit, which improves the control efficiency.

Embodiment 3

[0059] Embodiment 3: Different from the embodiment 2, it also includes a speed-measuring photoelectric switch for detecting the chain speed. The speed-measuring photoelectric switch is connected with the controller for detecting the chain speed of the conveying chain, and changing the speed of the conveying chain can change the preheating time and improve the efficiency of wave soldering. Since different jigs have different lengths and sizes, the same preheating distance has different preheating effects for different jigs. Therefore, the chain speed value is variable and depends on the length of the jig.

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Abstract

The invention relates to an intelligent control system for wave furnace wave welding and belongs to the circuit board wave welding field. The system comprises a wave furnace and further comprises a controller, a code scanning device, a tool inductor and a frequency converter, wherein the code scanning device is connected with the controller and is used for scanning tool codes and inputting the tool codes into the controller, the tool inductor is connected with the controller and is used for scanning length of a tool at the initial transmission position, the controller is used for determining a pre-heating distance according to the tool length, the frequency converter is connected with the controller, and the controller is further used for determining whether the tool finishes the pre-heating distance to reach the jet flow position so as to control the frequency converter for controlling jet flow height. The invention further relates to a control method of the system. The system is advantaged in that jet flow height can be automatically adjusted according to different products to satisfy production demands of the different products, utilizing multiple wave furnaces is not required, and excessive manpower and manhour are not required.

Description

technical field [0001] The invention relates to the field of wave soldering of circuit boards, in particular to an intelligent control method and control system for wave soldering of a wave furnace. Background technique [0002] In the electronics industry, product performance is the focus of every research and development, but as a manufacturing industry, efficiency and quality are the center of value creation in manufacturing. At present, with the development of science and technology, electronics are becoming more and more sophisticated. The requirements are getting higher and higher. Automation is the core of the current industry 4.0. Various requirements are achieved through automated welding. At present, automated welding basically uses wave soldering in wave furnaces. Wave soldering is to allow the soldering surface of the plug-in board to directly contact high-temperature liquid tin For welding purposes, the high-temperature liquid tin maintains a slope, and a specia...

Claims

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Application Information

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IPC IPC(8): H05K3/34
CPCH05K3/3489H05K2203/04
Inventor 季玮玮
Owner 常州华睿电器有限公司