1. PCB design issues: Improper PCB design is one of the main reasons for poor plug holes. For example, unreasonable design of hole size, shape, layout, etc. may lead to insufficient filling or the occurrence of air holes during the filling process. Welding process problems: Improper welding process may also lead to poor plug holes. For example, incorrect setting of soldering temperature, time, solder and other parameters may result in poor fluidity of the solder and inability to fully fill the holes.
2. Component selection problem: Inappropriate selected components may also lead to poor plug holes. For example, if the component pins are too thick or incorrectly inserted, the holes may be filled unevenly or cannot be filled.
3. Production process problems: Problems in the production process may also lead to poor plug holes. For example, uneven PCB board thickness, poor drilling quality, filling material quality issues, etc. may lead to poor plugging.
2. Solutions
In response to the above problems, the following solutions can be taken:
1. Optimize PCB design: Design a reasonable PCB to ensure that the hole size, shape, layout, etc. meet the requirements. At the same time, ensure that the PCB board thickness, drilling quality, etc. meet the requirements.
2. Improve the welding process: Adjust welding temperature, time, solder and other parameters according to specific conditions to ensure that the solder has good fluidity and can fully fill the holes.
3. Select appropriate components: Select appropriate components according to the specific situation to ensure that the pin size, insertion position, etc. meet the requirements.
4. Optimize the production process: Strengthen the control of the production process to ensure uniform thickness of PCB sheets, high drilling quality, and reliable filling material quality.
In short, solving the problem of poor PCB plug holes requires starting from many aspects, including optimizing PCB design, improving welding processes, selecting appropriate components, and optimizing production processes. Among them, the technical difficulty of reforming and upgrading the production process is relatively large, which is often accompanied by innovative changes in electronic products, such as miniaturization, multi-function, etc. This infers that PCB needs to be produced in a smaller volume and more complex , so it is necessary to use a vacuum resin plugging machine for production. So under what circumstances do we need to use a vacuum resin plugging machine?
Vacuum resin plug holes are mainly used in the following situations:
1. In order to solve the problem of wires and wiring, the use of resin plug holes in the via holes on the BGA of the multi-layer PCB board can reduce the distance between holes;
2. For the buried holes of the inner HDI, the use of resin plug holes can balance the contradiction between the thickness control of the lamination dielectric layer and the filling design of the inner HDI buried holes.
3. For through holes with larger board thickness, using resin to plug the holes can improve the reliability of the product.
Xin Jinhui’s semi-automatic performance breaks through 3 boards per minute. The self-developed ultra-high vacuum system has fast vacuuming speed and a vacuum degree of 50pa. It completely solves the bad problems caused by bubbles in PCB plug holes. High-quality output avoids rework and reduces the scrap rate. , combined with CCD positioning system, machine vision algorithm automatic positioning compensation and adjustment technology, self-locking mechanism, four-column lifting system, multi-faceted patented technology and scientific and reasonable mechanical structure design, giving Xinjinhui semi-automatic vacuum plugging machine excellent quality and stability It has won admiration and praise from many leading companies in the PCB industry. Customers are welcome to visit and exchange. I believe that through Xin Jinhui’s new inventions, new products and new technologies, it will definitely provide a surging impetus for your company to improve production and distribution efficiency. We look forward to your visit. connect.
Post time: Jul-21-2024