Corrugated carton coating defect inspection system
We are a big printing company in Shenzhen China . We offer all book publications, hardcover book printing, papercover book printing, hardcover notebook, sprial book printing, saddle stiching book printing, booklet printing,packaging box, calendars, all kinds of PVC, product brochures, notes, Children's book, stickers, all kinds of special paper color printing products, game cardand so on.
For more information please visit
http://www.joyful-printing.com. ENG only
http://www.joyful-printing.net
http://www.joyful-printing.org
email: info@joyful-printing.net
First, the problem
The rapid growth of China's economy for decades has made China a world-class factory. Exports have greatly promoted the rapid development of China's corrugated box industry, and the scale of production has expanded rapidly. Manufacturers use automatic glue-bonding machines when expanding and pursuing benefits. There was a big increase ten years ago. Although the carton manufacturers continue to improve the production process and management, the problem of weak carton bonding is inevitable. Due to the high production capacity of the automatic glue-bonding machine, several unsecured cardboard boxes greatly affect the quality of the whole batch of goods. The quality of the glued water is one of the most important issues affecting the quality of the carton bonding in the manufacture of corrugated boxes. Inadequate bonding will endanger:
(1) If the corrugated carton is not firmly bonded, it will cause the user to get stuck in the automatic packaging machine. The production cost lost by the user due to the stoppage will exceed $20,000 per hour. As a result, several “bad boxes” often lead to the whole batch of cartons. Returned by your users, the carton manufacturer had to manually pick out the defective boxes from the entire batch of returns and re-produce the entire order for free. These quality management issues will result in a loss of more than $200,000 per year for carton manufacturers.
(2) Carton quality issues are very important. Because quality management issues will jeopardize the user's interests, users will turn to more stable carton suppliers.
In order to avoid the above situation, it is necessary to control the scrap rate caused by the sticking problem to a very low or zero range. Therefore, it is very important to find out and remove the “poorly bonded” carton on the high-speed production line. The corrugated carton coating defect inspection system (made in Canada) of Nanning Siant Electronics Co., Ltd. is a revolution to solve this problem. Sexual scheme Rogers
Second, the system composition
1) High-speed digital camera
2) Computer processing and analysis display system
3) Inkjet system
4) Special software
Third, the working principle
Use a high-speed digital camera to align the glued parts of the carton, and at the high-speed shooting, the glue distribution map of each box, the amount of glue applied, transferred to the computer and the set program to compare and identify each image, when isolated When the glue is unqualified or has other defects, an alarm sounds and a signal is sent to the inkjet system to mark the defective carton. The operator can easily remove the defective carton before the bundling, ensuring that each batch is not unqualified. Carton.
Fourth, its working process
Real-time photography → analysis of glue strip distribution images → removal of defective cartons → recording of defective data
(1) Real-time photography
The inspection system uses a high-speed digital CDD camera to capture images.
(2) Analysis of glue strip distribution image
Each glued map of the box is photographed and analyzed in great detail to find any type of glue defect that can cause problems for the user. Its patented inspection technology identifies a wide range of gluing quality issues, such as: automatic calculation of the number of glue bars, glue bar shape... The system not only finds out each type of gluing problem, but also identifies other related issues:
※ There is a small debris on the glue strip
※Carton skew
※ Damaged carton Shenzhen Tokyo Wenhong Printing Machinery Co., Ltd.
(3) Remove the defective carton
Once a defect is found, the system will:
. Alert
. Automatically dyes the defective carton with a dye
. Automatically record and store defective images
By alerting the machine operator that the defective carton is clearly marked with the dye, the operator can easily remove it.
(4) Recording defect data
When the system finds an unqualified box, it records an image of the glue defect and saves this information to the order number of the customer order. The machine operator can retrieve this information again immediately. The glue defect image and sequence number information will be saved for approximately 6 months. Providing machine operators and customers with true and reliable evidence of defective images increases customer trust in the quality management capabilities of carton manufacturers. [next]
Fifth, the system can identify the following glue defects
(1) No glue: there is no glue on the paper surface of the box.
(2) The time for extruding the glue strip is not suitable: the glue is either too early or too late, and one quarter of the paper that needs to be glued is not glued.
(3) Lack of glue strip: The equipment failed to squeeze enough glue strip onto the paper.
(4) Sticking small pieces of paper or foreign matter on the glue strip: When the carton is folded, the small pieces of paper on the corrugated box will fall onto the glue strip, which will cause no glue at this position.
(5) Bad box: The bad carton makes the glue strip incomplete and the adhesion is not strong.
(6) The carton is skewed: the position of the glue applied will be incorrect due to the box being bent or skewed. (Note: This is most likely a carton folding problem)
(7) Insufficient amount of glue: the glue strip is thin, or intermittent, and the length is not enough.
(8) Too much glue: too much glue is applied. Excessive glue will be applied to other places or outside the box under the pressure, which will cause the box itself to stick or stick to other boxes.
(9) The glue dispensing time is not suitable: the glue is too early or too late, and one quarter of the paper has no glue. (especially only a quarter of the area has glue)
(10) The carton is cut too short: the side of the carton board is cut too short, causing the glue strip to be too close to the edge of the board.
(11) Side movement of the cardboard: moving on the side of the carton board in the machine, changing the position of the predetermined glue and the positioning distance to the edge of the paper.
Sixth, the system can solve the problem
The system can detect and remove the carton of the following two problems, namely:
1.the box is not firmly attached
2.the carton is stuck together
(1) The box is not stuck firmly
A cardboard box that is not securely attached will not be able to withstand the designed load capacity. On the user's packaging line, the cardboard box that is not fastened will not be vertical after being loaded into the equipment, or it will be leaked out after the product is placed in the box. For the user, the incomplete sticking of the carton is a very serious problem, which can interrupt or completely stop the automated packaging line.
(2) The cardboard boxes are stuck together or the carton cannot be opened.
The second major problem with gumming is that the carton cannot be opened or it is difficult to open vertically. When the glue is applied or flows outside the glue application area, the carton itself can be pasted together. The self-adhesive corrugated carton requires a lot of power to open when it is opened on the packaging line, which usually causes the customer's packaging line to become clogged. At the same time, several cardboard boxes that are stuck together can also cause the customer's packaging line to become clogged. That's because the glue is applied to or flows out of the glued area, that is, to the top or bottom of the box. When the boxes are bundled together, the exposed glue causes the boxes to stick to each other. When the straps bundled on the carton are not removed, the cartons look fine without any problems, and the defective cartons are not found and shipped until the customer starts to use the above problems.
Seventh, the system makes corrugated box manufacturers have a competitive advantage
By detecting and eliminating cartons with defective problems before the carton reaches the customer's hand, the Glue Defect Inspection System greatly reduces the return of quality problems and its associated costs. As a result, the glue defect inspection system greatly retains the user and increases customer satisfaction. In addition, visual inspection quality inspection methods for rubberized defects are often used as tools for selling and marketing cartons, enabling cartons to use their most advanced quality management systems on the market today to remove cartons with quality problems. Zero defect delivery records will give you a strong competitive advantage in the minds of users.