Code Inspection System
1.Multi module, no dead angle detection
2.A self-developed detection software system, stable detection, fast processing, maximum detection speed of up to 1200 cans/ min
3.Independent research and development of image processing algorithm can accurately identify code, high precisio n identification
I. Equipment Introduction
1. Equipment Application:
Online inspection of the inkjet printing quality on can bottoms on a can production line, automatically rejecting products with defective bottom printing.
2. Equipment Features:
1).Non-contact, online inspection, harmless to the can body.
2).High inspection speed, up to 72,000 cans/hour.
3).Capable of recognizing year, month, and day characters, fixed information (such as factory codes TN, HB, GM, HG, "Qualified," anti-counterfeiting codes, and other error correction functions), and automatically adjusting the date system without manual intervention.
4).Flexible human-machine interface with multi-level user access settings.
5).Provides convenient and fast coding character training.
6).The counting method uses an encoder installed on the synchronous motor of the conveyor chain. Once the defective can number is recorded, rejection accuracy is not affected by line stops or speed changes.
7).The inspection machine is equipped with industrial-grade air conditioning to prevent system crashes and system abnormality alarms caused by long summer operation.
8).Customizable functions based on the customer's actual production conditions.
9).Automatically stores photos of defective products with daily coding, with customizable storage time.
10).Utilizing Maotong's latest inspection system software, it filters the impact of the Yangyuan logo and scratches on can bottoms on coding detection, reducing false rejections.
11).Continuous rejection and shutdown function
12).24-hour remote control
13).360° coding inspection without blind spots
14).Zero delay detection of inkjet printing to avoid false rejection caused by cans being rubbed against the line, cans being stuck, cans being blocked, cans being placed manually, etc.
II. Detection Functions
1. Presence of inkjet printing (printing on the cover, missing inkjet printing, can inverted)
2. Blurred inkjet printing (individual characters are blurred and cannot be identified by the human eye)
3. Inkjet printing errors (incorrect year, month, and day, incorrect factory code, incorrect anti-counterfeiting code)
4. Missing characters (accurate to detect missing characters exceeding 20%)
5. Character recognition (interpreting the inkjet printing information)
6. Position deviation (outside the set range)
7. Duplicate codes (multiple code detection)
Note: Our technical advantage lies in the ability to detect inkjet printing errors and individual characters. The "inkjet printing error" detection function is simple to verify. Cans produced today can be put on the same production line on another day to see if the inspection equipment can reject them.
3. Installation location
4. Detection principle
A Gigabit Ethernet digital camera takes photos from above, digitally analyzes the captured images, and rejects unqualified cans.
Cans pass a positioning sensor, which detects their arrival. The control unit records the can's identification number and the current encoder signal. The positioning sensor triggers the digital camera to capture the image of the can's current coding and transmits it to the image processor via the network. The image processor processes and analyzes the received image and transmits the results to both the human-machine interface for dynamic display and the control unit. Upon receiving the unqualified signal, the control unit notifies the rejector to remove unqualified cans with the corresponding identification number online.
Photos of some tank bottoms that failed to meet the standards:
V. Equipment Configuration Details and Inspection Accuracy
(I) Detailed Equipment Description
A. Technical Parameters
Equipment Name: Inkjet Printer
Model: MT-YLG-OCR-03
Applicable Production Speed (Max): 72,000 bottles/hour (Exceeding 72,000 BPH, rejection is servo-controlled)
Inspection Area: Inkjet Printer
Rejection Method: Precise online rejection of defective cans detected by the inspection unit
Safety Protection Rating: IP65
B. Main Applications:
Widely used in beverage can production lines, inspecting the inkjet prints on various cans and automatically rejecting them.
C. Technical Features:
1. Reduces personnel and production costs.
2. Improves production efficiency and product quality.
3. The inkjet printer inspection machine's test results meet the manufacturer's relevant technical standards.
D.Detection accuracy:
serial number
| Inspection Items | Testing conditions and accuracy
| Rejection rate
| False kick rate
|
1 | Inkjet Printing Inspection | -- | -- | < = 0.03% |
1.1 | No inkjet printing (printed on the cover, missing inkjet printing, can inverted) | -- | >99.99% | |
1.2 | Missing inkjet printing | Single character > 20%
| >99.8% | |
1.3 | Fuzzy inkjet printing | The human eye cannot recognize the inkjet characters
| >99.93% | |
1.4 | Incorrect inkjet printing | Wrong production date, wrong factory code, wrong security code, deformation (elongation or shortening)
| >99.99% | |
1.5 | Position offset | Beyond the expansion zone
| >99.99% | |
1.6 | Duplicate inkjet printing | Multiple code printing in the code area
| >99.99% |
Note: The rejection rate for the "No Coding" test item in the table indicates that for every 10,000 cans tested, there may be one that is not rejected. This is theoretical experimental data, and the same applies to other test items. The above test items are tested on a real-time basis for each can, not just during shift handovers.
