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Welding spot detection method based on image

A solder joint detection and solder joint technology, applied in the direction of optical testing flaws/defects, sorting, etc., can solve the problem of inability to separate solder joints, and achieve the effect of rapid detection

Inactive Publication Date: 2020-05-22
北京瑞诚联众科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to provide an image-based solder joint detection method to solve the problem that the existing solder joint detection methods cannot quickly separate unqualified solder joints from qualified solder joints while ensuring that qualified solder joints are intact. The problem

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Embodiment

[0047] This embodiment provides an image-based solder joint detection method, which is implemented by means of a solder joint detection system.

[0048] The welding spot inspection system in this embodiment includes a digital camera 1 , a spot welding machine 2 , a control system 3 , an XY moving platform 4 , a touch screen 5 , and a welding pad 6 .

[0049] Wherein the XY moving platform 4 is driven by a motor, and carries the pad 6 and can move along the X axis or the Y axis simultaneously in the horizontal direction. There can be one or more workpieces to be welded on the pad, and the position of the pad 6 and the relative position in the pad will be recorded and read by the control system 3; the control system 3 can control the movement of the XY mobile platform 4 at any time, And then control the movement of the workpiece being welded.

[0050] The spot welding machine 2 is composed of a welding head, a welding controller, a power supply, a capacitor, etc., and the weldi...

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Abstract

The invention aims to solve the problem that an existing welding spot detection method cannot quickly separate unqualified welding spots from qualified welding spots while ensuring the completeness ofthe qualified welding spots, and provides a welding spot detection method based on an image. The method achieves detection of tiny welding spots by means of a welding spot detection system. The welding spot detection system comprises a digital camera, a spot welder, a XY moving platform, a control system and an alarm system. The digital camera, the spot welder, the alarm system and the XY movingplatform are all electrically connected with the control system. The welding spot detection method comprises an initialization step, a pre-welding image shooting step, a welding step, a post-welding image shooting step, a data analysis step and an analysis result output step. The method has the beneficial effects that the unqualified welding spots can be quickly separated from the qualified welding spots while ensuring the completeness of the qualified welding spots.

Description

technical field [0001] The invention relates to the technical field of solder spot detection, in particular to an image-based solder spot detection method. Background technique [0002] In the field of micro-spot welding, unqualified welding quality includes virtual welding and desoldering. The former makes it impossible to ensure that the current can not pass through the solder joint continuously and stably, and the latter causes the current to fail to pass through the solder joint. Solder joint detection technology is a technology to judge whether the quality of solder joints is qualified, so as to avoid the occurrence of false soldering and desoldering, and improve the yield rate. [0003] There are two main methods for existing solder joint detection: the physical detection method based on machine thrust; the detection method based on human naked eye recognition. The existing solder joint inspection method cannot quickly separate unqualified solder joints from qualified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/342G01N21/95
CPCB07C5/3422G01N21/95
Inventor 朱文选顾金龙冯德就
Owner 北京瑞诚联众科技有限公司