Crop: half before "print", half after "print"
Cutting, a seemingly "simple" and "low-tech" process, is it easy or difficult in actual production? What should be paid attention to when cutting? What is the market demand for cutting equipment? What are the new trends in the development of cutting equipment ... Next, let us follow the explanation of Mr. Zhan Huiguang, the general manager of the post-press equipment department of Heidelberg China Co., Ltd., and enter the extraordinary hall of cutting.
"Pre-press", "printing", "post-printing"-these three terms are now familiar to everyone. However, is "post-press" really the last link in all production and processing processes? What we usually call post-printing is a general term for various processes such as cutting, folding, binding, die cutting, and gluing boxes. In fact, these processes are not all after "printing", for example, cutting, sometimes, is the prelude to printing.
Cutting, a seemingly "simple" and "low-tech" process, is it easy or difficult in actual production? What should be paid attention to when cutting? What is the market demand for cutting equipment? What are the new trends in the development of cutting equipment ... Next, let us follow the explanation of Mr. Zhan Huiguang, the general manager of the post-press equipment department of Heidelberg China Co., Ltd., and enter the extraordinary hall of cutting.
Cut, half before "print", half after "print"
"There are many things that the paper cutter can cut. The biggest category is paper cutting." Mr. Zhan opened the door. "Cut paper is divided into two categories. One is cut white paper, commonly known as 'open white material'. We must trim the paper before printing. Isn't this the 'prelude to printing'? Another The category is the finished product. Whether you are printing postcards or advertising brochures, you must cut after printing and before the printed sheets are folded on the folding machine.
Mr. Zhan tells us: In many people ’s eyes, how easy is it to "open the blanks"-just cut two knives, probably not all? As everyone knows, it is this carelessness that provokes trouble. "If the white material is cut unevenly, this side is a little slanted, and the other side is not at a right angle. Although it is only deviated by one degree, it cannot be seen by the naked eye, but when you print the proofs to be folded, you will find how to fold it. Not allowed. "
"If you want to make a first-class print, you must be precise from cutting white paper. You need to cut as much paper as you need. To cut it squarely, there must be no edges or corners. Where to cut, no The place to cut is not cut, and the points are the same. This is the most basic requirement for cutting. "Mr. Zhan said. Whether cutting white paper or finished products, once the cutting fails to meet the standards, it will suffer printing and other post-press processes. "Therefore, the precision of the paper cutter is very critical for users!"
The first level of cutting: precision is king
The gradual escalation of competition in the printing industry is an indisputable fact. In the past, printing companies mainly compared the quality of printing and pre-press. Nowadays, it is not a one-step thing to make your products have superior competitiveness from quality to price. Whether the enterprise's marketing goals can be achieved, every production and processing link has a decisive influence. In recent years, with the increasing demand for post-print quality by print consumers, the post-press industry has become one of the main battlefields for market competition. The "simple" cut looks like the first hurdle: accuracy.
Mr. Zhan gave an example for everyone: In the process of producing wine labels, cutting is one of the most important links. Among them, the accuracy of label size is "particularly critical." The material of the wine label is mostly pure aluminum foil, aluminized paper or coated paper stickers, etc., a number of dense wine labels are often printed on one plate, which sets a difficulty for the accuracy of cutting. "For example, the standard for Yanjing Beer's cutting of wine labels is-wine labels with an error of not more than ± 0.3 mm are qualified products. In the face of hundreds of wine labels intersecting with each other, continuous multi-knife cutting is necessary. No flashovers are allowed, so every time the knife is cut, it must be very accurate. "And the manufacturer's requirements for the product are not limited to this." For example, the body of the wine bottle has two gilts on the body. For the gilt after cutting, there should be How high, the manufacturers have strict specifications. "
In the above example, the Bora 115 X and 115 XC paper cutters used by the user provide a guarantee for accurate, stable and consistent quality label cutting. Precise tool bed, accurate and reliable pressure setting, and accurate cumulative error ... In the process of creating quality products, creating economic benefits and social benefits day after day, user's tools have won their favor.
Beer consumption and production tend to peak in the midsummer season. Regarding the cutting of wine labels, in addition to precision, productivity and efficiency are also very important. If you cut 400-500 sheets in a batch, the accuracy can be guaranteed, but it is a little nervous if you want to deliver on time. So, what about 800 sheets and 1,000 sheets in a batch? As the stack of paper is higher, the problem of upper and lower blades is more likely to occur during cutting, that is, the cut at the upper end of the stack is not aligned with the cut at the lower end. Mr. Zhan said that although the tilt compensation function of the back gauge of the Pola knife is optional, it can not only ensure that the paper stack is flat and fit, but also make the cutting easier and more efficient.
The second level of cutting: superior efficiency
Whether the product of the enterprise is a wine label, a hardcover book, or a picture book or an advertising page, the two challenges faced in the cutting process can only be cut accurately and quickly.
If you want to be fast, isn't it as long as the speed is high? Mr. Zhan made such a comparison: User A uses a single paper cutter. Since most of the operator's time is spent on moving, lifting, aligning, and unloading paper, the time really used for cutting Only about 30%. User B uses a cutting system. While the system automatically completes stacking, lifting, aligning, and unloading, the operator has also made full use of 85% of the effective time for cutting. At the same time, it is obvious that the cutting efficiency of user B is nearly three times that of user A.
To sum up, the benefits of cutting systems are manifested in many ways:
First, with the help of the stacker lifting device, air cushion paper table, automatic paper stacking device and automatic turning device, paper unloading device, etc. in the system, the stack of paper is kept tidy from cutting preparation to cutting Order status. In this way, moving and sorting the paper stack no longer takes up the cutting time, in other words, the effective time of cutting is greatly improved;
Secondly, the use of the above-mentioned automated devices contributes to the precise alignment of the paper stack and promotes the cutting accuracy;
Third, the cutting system is not only convenient to operate, but also, the operator no longer needs to bend down to carry paper. With the improvement of working conditions and the reduction of labor intensity, the labor efficiency has also increased accordingly;
Fourth, use the cutting system to carry out efficient cutting, which saves a lot of time for subsequent printing or post-press processes. [next]
According to Mr. Zhan: More and more user companies are beginning to realize the importance of cutting efficiency. At this year's IPEX exhibition, Bora's cutting system appeared again, attracting many Chinese users to stop for a long time. He calculated an account for everyone: the production capacity of one cutting system is comparable to that of three paper cutters. A cutting system is usually equipped with two staff, a total of four staff in two shifts a day. The three paper cutters and two shifts a day must be equipped with twelve workers, and regardless of the scarcity of human resources in reality, from the perspective of cost alone, labor costs and management costs are high, and the cutting efficiency is in the end There is no guarantee, but a question mark.
In addition, the development of paper cutters in the direction of intelligence also caters to users' demands for cutting efficiency. A paper cutter often has to cut both white material and finished product. When there are more and more jobs and very different sizes, "If there is no computer program control, no program storage, every time, every step must be repeated, not only a waste of time, but also no benefit at all." Mr. Zhan pointed out: At present, the Pola knife can store up to 2,000 programs. The data such as paper size, cutting line settings, and paper rotation direction are saved after input. The LCD screen and graphics guide the operating system to provide operators with clear, Intuitive work instructions. As a result, production preparation time and waste sheets can be greatly reduced, and traditional cutting has been given a new meaning of high efficiency, economy, and low carbon.
The third level of cutting: flexible first
"As mentioned earlier, the paper cutter can cut a lot of things, in addition to paper, there are labels, plastics, plates, etc." Mr. Zhan explained that some users have to deal with many types of cutting objects, so they need to be flexible , The right solution. "Even paper is thick and thin. We need to" adjust to local conditions "and adjust the cutter to the most suitable state. For example, very thin paper or the metal foil used for wine labels can bear less pressure, so cut The blade of the paper machine must be sharp and the pressure setting must be accurate. There is no doubt that the performance of the Pola paper machine in this regard has been approved by users. "
For the cutting of self-adhesive labels, Pola knife also provides an effective solution. The glue contained in the label is a challenge, and it is easy to stick to the blade during the cutting process to form an obstacle. "Pola knife not only blows through the air holes when cutting the lower knife, so that the label is easy to fall, but also lubricates the blade, which weakens the adhesion of the gum." In fact, users are dealing with plastics used for three-dimensional printing A similar situation will also be encountered with gratings. Because plastic articles generate static electricity during cutting, the cut scraps often stick to the blades and cannot fall off by themselves, and manual cleaning of waste materials takes time and effort. Similarly, the problem can be properly solved by enabling the function of blowing and removing waste.
As another example, printed plate materials, especially thermal plates, are prone to localized blackening after cutting. "The speed of the paper cutter is high, the lower knife is fast, the blade is hot, and the plate becomes black due to heat." At this time, the solution of the Pola knife is all-round: first, slow the cutting speed, adjust It is appropriate to prevent the blade from overheating because the blade speed is too fast; Secondly, lubricate the blade after each blade to reduce heat.
"In order to solve the" intractable diseases "that occur in the production of users, Pola Corporation has proposed a rich and personalized solution. Some problems seem to be a trivial matter, which may be solved by human resources. However, considering the small profits The fierce market competition in the era, considering the market's requirements for accuracy and efficiency, and considering the plight of insufficient manpower and talent in reality, cutting is not as simple as imagined. Applying our advanced technology and equipment, applying us Your professional knowledge and experience are still your wise choice, and you will definitely have unexpected gains! "Mr. Zhan said confidently.
Future years: cutting "upgrade" notes
Beijing, China Print in 2009, the Bora cutting system on the Heidelberg booth is a group of four amazing and stunning technologies. In view of the fact that entrepreneurs already know the market demand well, and the demands for improving the degree of cutting automation are becoming more and more urgent, the installation and use of cutting systems have been rising all the way.
Mr. Zhan commented: "The current situation creates heroes. A few years ago, the printing industry was still profitable, so people didn't pay much attention to production efficiency, cost, and consumption. In these years, as the market changes, printing companies have begun to consciously improve The degree of automation of the cutting equipment. Some users have tasted the sweetness in the process of applying the cutting system, so after buying one set, they bought the second and third sets. "
Since the IPEX exhibition in 2010, the Bora knife has been integrated into the Heidelberg Prinect workflow management system. The Pola paper cutter, cutting management system and Prinect post-press management system are connected to form a complete cutting process. Data entered manually in the past can be collected automatically during the production process today. The operator only needs to move his finger to switch between the cutter control system and the post-press data display interface, and can also receive the work list (including job description and sorting) automatically issued by the Prinect post-press management system , Number of cuts, estimated time spent, etc.), and then follow the prompts to operate. The successful cases of users all over the world prove that: the pre-press, printing and post-press workflows save time and production materials for the enterprise. At the same time, the work efficiency is doubled and the product quality is more guaranteed.
Regarding the upgrade, there are still a lot of things worth noting. For example, the display on the Bora knife has been expanded from the original 12 inches to 15 inches. In addition to containing and displaying more production information, it also provides operators with more humane working conditions. Another example is the very popular combination printing in overseas markets and even in Taiwan. Now that Compucut is used to automatically compile cutting programs, users can easily complete the cutting process. Not only is the efficiency high, the cost is falling, but more importantly, these technologies and The production model has brought more generous returns to the enterprise.
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