{"id":1922,"date":"2026-09-30T09:30:00","date_gmt":"2026-09-30T01:30:00","guid":{"rendered":"https:\/\/www.blzn168.cn\/?p=1922"},"modified":"2026-10-08T10:20:00","modified_gmt":"2026-10-08T02:20:00","slug":"dispensing-defect-analysis-improvement","status":"publish","type":"post","link":"https:\/\/www.blzn168.cn\/en\/dispensing-defect-analysis-improvement\/","title":{"rendered":"How to analyze and improve vision dispensing machine dispensing defects"},"content":{"rendered":"

During mass production, dispensing defects are almost impossible to avoid completely; common manifestations include offset, broken glue, overflow, stringing, and uneven glue shape. Behind these problems is usually not a single cause but the superposition of positioning, valve, parameter, or glue-state conditions. Establishing a systematic analysis mindset enables quick root-cause location on the line and reduces line-stop losses, rather than trial-and-error by experience.<\/p>\n\n\n\n

1. What Are the Common Manifestations of Dispensing Defects<\/h2>\n\n\n\n

misalignment<\/strong>refers to the glue dot deviating from the target position as a whole or locally;broken glue<\/strong>is continuous dispensing being interrupted or missing segments;overflow<\/strong>is the glue body exceeding the design range and piling outward;stringing<\/strong>is fine filaments dragged out when lifting the needle;uneven glue shape<\/strong>is the glue dot size or shape being inconsistent within the same batch. Different manifestations point to different links; accurately describing the phenomenon is the first step of analysis and the basis for communicating with the equipment supplier.<\/p>\n\n\n\n

2. Where Do Offset-Type Problems Usually Occur<\/h2>\n\n\n\n

Offset is mostly related tovision positioning or calibration offset<\/strong>. If the entire batch shifts in the same direction, first checkwhether calibration and needle alignment have failed<\/strong>; if individual workpieces shift, it may be incoming-material placement error or unstable vision recognition features. Bolli vision dispensing machines use Hikvision cameras and self-developed vision algorithms for positioning, but workpiece incoming posture and fixture consistency still affect results, so loading and positioning must be included in troubleshooting together, not just the equipment itself.<\/p>\n\n\n\n

\"\u89c6\u89c9\u70b9\u80f6\u673a\uff0c\u504f\u4f4d\uff1a\u89c6\u89c9\u5b9a\u4f4d\u6216\u6807\u5b9a\u504f\u79fb\uff0c\u5bf9\u9488\u5931\u6548\"<\/figure>\n\n\n\n

3. Countermeasure Directions for Broken Glue and Overflow<\/h2>\n\n\n\n

Broken glue often points topoor valve action, insufficient dispensing pressure, or air in the glue<\/strong>; overflow is mostlyexcess pressure, insufficient needle-lift height, or valve-port residue<\/strong>. The countermeasure is not simply increasing or decreasing pressure, but first confirming valve status and whether the glue path is clear, then fine-tuning parameters around the target glue volume. Bolli vision dispensing machines with a stable motion platform can expose and correct broken-glue and overflow windows during the sample-trial stage, letting mass production avoid detours.<\/p>\n\n\n\n

\"\u89c6\u89c9\u70b9\u80f6\u673a\uff0c\u6ea2\u80f6\uff1a\u538b\u529b\u8fc7\u9ad8\u3001\u62ac\u9488\u9ad8\u5ea6\u4e0d\u591f\u6216\u9600\u53e3\u6b8b\u7559\"<\/figure>\n\n\n\n

4. How to Handle Stringing and Uneven Glue Shape<\/h2>\n\n\n\n

Stringing is mainly affected byneedle-lift height, dispensing pressure, and glue flowability<\/strong>, appropriately increasing needle-lift speed, optimizing break-off action, or adjusting temperature often improves it; uneven glue shape relates topressure fluctuation, valve wear, or inconsistent glue temperature<\/strong>. Such problems are sensitive to consistency; parameters should be recorded and trends observed rather than masked by a one-time adjustment, otherwise they resurface at batch change.<\/p>\n\n\n\n

5. Establish a Troubleshooting Sequence for Defect Analysis<\/h2>\n\n\n\n

It is recommended to follow“positioning\u2014valve\u2014parameters\u2014glue”<\/strong>for layered verification: first confirm calibration and vision positioning, then check the valve and glue path, then review parameters such as pressure, speed, and temperature, and finally look at glue batch and warm-up status. Layered troubleshooting avoids round-trip trial-and-error. Bolli provides unlimited remote after-sales and sample-trial support, assisting enterprises in solidifying common-defect troubleshooting paths into standard actions, shortening exception handling time.<\/p>\n\n\n\n

6. How Enterprises Improve Dispensing Yield<\/h2>\n\n\n\n

Beyond the equipment's own stability, yield improvement relies more onfront-end verification and process management<\/strong>. Bolli vision dispensing machines can expose most defect risks through sample trials during trial production and confirm valve-parameter combinations per sample part; after mass production, establish parameter records and changeover review habits so problems are found early. Turning improvement into reusable experience is more sustainable than one-off firefighting and easier to demonstrate management capability in customer audits.<\/p>\n\n\n\n

In summary, dispensing defects are the result of multiple links\u2014positioning, valve, parameters, and glue\u2014superimposed; a ”positioning\u2014valve\u2014parameters\u2014glue” systematic troubleshooting sequence should be established rather than trial-and-error one by one. Bolli vision dispensing machines can expose most hidden risks in trial-production sample trials and assist enterprises in solidifying troubleshooting paths into standard actions, stabilizing yield with parameter records and changeover reviews. If you need to evaluate dispensing-defect improvement plans with specific workpieces, you cancontact Bolli Intelligent 13352947677 for sample-trial and after-sales suggestions.<\/strong>