PCB hole quality control can not be ignored, online PCB holes inspection machine provides you with solutions
In India, bergengroupindia.com is also our partner
When you pick up a circuit board, you will find dense holes on it, and even some holes need a magnifying glass or a microscope to be observed. Each hole is designed for its purpose and is mainly divided into through holes, blind holes, and buried holes, which are used for electrical connection between layers and fixing or positioning of devices.
In production, circuit board holes may have defects such as hole position deviation, hole diameter distortion, rough hole wall, few holes, hole plugs, burrs, etc. In order to effectively control the quality of PCB holes, it is necessary to standardize the operation process of the drilling machine before drilling and after drilling. Need to strengthen testing methods.
In order to adapt to the development and changes, a variety of inspection methods such as manual visual inspection, hole number inspection machine, hole position inspection machine, AOl inspection equipment and so on have been born. However, manual visual inspection with low efficiency and low yield, as well as single-function hole number detector and hole position detector have been gradually eliminated from the market. AOI inspection equipment-hole inspection machine has become the mainstream of the times.
However, many PCB manufacturers still use conventional manual inspection machines for inspection: loading the board → manually inputting the circuit board material number → inspection → checking the test results → manually distinguishing OK/NG circuit boards → from receiving the board.
Zhengye technology online hole inspection machine
The online inspection machine independently developed by Zhengye Technology is suitable for PCB drilling and pre-packing processes. It can detect the number of holes, diameters, and hole quality such as plug holes, foreign objects, slot length, slot short, and other defects. It is accurate, efficient, and automated. And other features, outperforming conventional manual detection methods
The equipment can be connected to the circuit board production line to realize the functions of automatic feeding, automatic detection, and the automatic distinction between good and defective products. The detection efficiency per unit time is higher, the rate of misjudgment and missed judgment is greatly reduced, and the staffing can be reduced greatly. Reduce labor costs.
Zhengye Technology's online inspection machine not only has the advantages of high automation, low missed judgment/false judgment rate, cost reduction, and efficiency improvement, but also adopt a high-precision CIS scanning system, equipped with multi-channel sub-inspection equipment and multi-channel synchronous detection to achieve high efficiency, High-precision production, deeply favored by the market, has many domestic well-known corporate customers, exported to Japan, the United States, Russia, South Korea, Iran, India, and many other countries.
PCB Loading machine + PCB warpage inspection machine + PCB warpage leveling machine +
PCB Online Holes inspection machine + Parallel robot
Import data → 1.Load PCB→ 2.Warpage inspection → 3.Flattening→ 4.Hole inspection→ Sorting
1. loading machine (feeding/Load PCB): compatible with automatic loading of large and small PCB boards, single and double rows can be loaded at the same time.
2. Warpage inspection machine: It can automatically detect defects such as PCB finished boards or copper-clad laminates, bending and deformation, and according to PCB board warpage standards and flatness standards: for surface mount components (such as SMT mounted) printed board, with its twist and bow standard of not more than 0.75% or 0.5% for calculation, the automatic judgment of NG, and equipment for classification.
3. Flattening/Leveling machine: It can automatically level the finished PCB board, using upper and lower infrared heating to quickly heat the product to high temperature, and press the finished board with mechanical rollers to reduce bending and warping. (Twisting) The positive force is applied to achieve the leveling effect, and the fan is naturally cooled, which will not cause the second plate to bend and warp.
4. (Hole inspection) On-line inspection machine: It can check the printed board with few holes (missing holes, plug holes), multiple holes (more drilling, one is divided into two), foreign objects in the holes, large holes, small holes, and "one hole". "The length, width, angle, and other irregular hole shapes of the font slot are automatically detected, and NG is automatically judged according to certain standards, and the equipment is classified at the same time.
5.Parallel robot(Sorting Unloading): commonly known as "spider hand", combined with a vision system, it can realize automatic identification, positioning, picking, and placement of items on industrial automation production lines. It has the advantages of fast speed and good rigidity. Mainly used for rapid sorting, unloading, framing, and other processes.
Process Flow:
Equipment function: This instrument can measure the length and width of small holes (missing holes, plugging holes), multiple holes (more drilling, one is divided into two), foreign objects in the holes, large and small holes, and the length and width of the "one"-shaped slot on the printed board. It is a device that automatically detects defects such as, angle, and other irregular hole shapes, and automatically determines NG/OK according to certain standards, and performs classification at the same time.
Customer PCB samples: Drilling files and hole check reports
2. EB-F0961: Drilling data is not up to standard
3. NT-F3999: Unqualified drilling data
4. QPI-E2493 Unqualified drilling data
5. Screenshot of hole inspection results and related parameters (EB-E1951)
1. EB-E1951: Qualified drilling data
The drill.gbr and panel-frame.gbr files in the following screenshot can be opened at the same time
Open with CAM350, See the screenshot at the lower left, After importing into Zhengye Software, the screenshot is shown in the lower right:
2. EB-F0961: Drilling data is not up to standard
Using CAM350 software
Note: The "reedit-panel.gbr" file was re-edited by a Zhengye engineer based on "panel.gbr". The CAM350 screenshot of "panel.gbr" is shown in the lower left, The CAM350 screenshot of "reedit-panel.gbr" is shown in the lower right
Open the above two files( panel.gbr +reedit-panel.gbr ) with hole checker software,
The "panel.gbr" screenshot is shown in the lower left, The "reedit-panel.gbr" screenshot is shown in the lower right
Importing “ "panel.gbr" Importing "reedit-panel.gbr"
Customer original drilling file problem analysis:
The punch hole/slot is missing an outline, The stamp hole is not broken
In this case, the hole checker software will determine the whole punching slot outline as one hole, and the actual drilling area in the middle is equivalent to being milled off. In short, in the drilling file, except for the punching slot outline of the PCB board is closed, other punching slots can not appear as closed lines as in the original drilling file("panel. gbr" ) , those stamp holes must be broken.
The requirements of Zhengye hole checker for drilling files are: the information is basically the same as the actual board shape , including hole position and diameter etc.
3. NT-F3999: Unqualified drilling data
Open with CAM350, See the screenshot at the lower left, After importing into Zhengye Software, the screenshot is shown in the lower right:
4. QPI-E2493 Unqualified drilling data
The 3 documents are all CAD drawings, and the data format does not meet the requirements. Please provide the corresponding gbr format file for the finished PCB board
Open with CAM350, See the screenshot at the lower left, After importing into Zhengye Software, the screenshot is shown in the lower right:
5. Screenshot of hole inspection results and related parameters (EB-E1951)
For the PCB EB-E1951 that meets the requirements of the data format, the screenshots of the inspection hole results and related parameters are as follows for the Customer's reference . Note: Please click on the images to enlarge the details you are interested in
Machine name: Rigid PCB Hole Checker
PCB thickness requirements: 0.3~10.0 mm
PCB size requirements: width 80~650 mm, length 100~650 mm
Aperture range: φ0.10~10 mm
Aperture accuracy (round hole)
±20 um (Aperture ≤1 mm)
±30 um( 4mm>Aperture>1mm)
±40 um ( Aperture ≥4 mm )
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