Die cutting machine

Die-cutting machine is mainly used for die-cutting, creasing and cold embossing of trademarks, paper boxes, and greeting cards in the paper packaging and decorating industry. It is an important equipment for post-press packaging and forming. The working principle of the die cutting machine is to use a steel knife or steel wire (or a stencil carved from a steel plate) to apply a certain pressure on the platen to roll the printed product or paper board into a certain shape. If the entire print is pressed into a single graphic product is called die cutting; if the use of steel wire in the prints on the traces or leave the groove marks are called indentation marks; if you use the yin and yang two templates, in the print The surface embossed with a three-dimensional effect pattern is called convex-concave imprinting, and the above can be collectively referred to as die-cutting technique.

Type of die-cutting machine

Die-cutting machine according to the different forms of imprinting, is divided into round pressure round, round flat, flat pressure flat three types. According to the form of the template can be divided into vertical and horizontal two. According to the degree of automation manual (semi-automatic) and automatic two. In terms of function, in addition to die cutting, there are hot stamping functions, called hot stamping die cutting machines, and some with automatic stripping function, known as a stripping die cutting machine.
Circular press die cutting machine features line contact, low die-cutting pressure and high production efficiency. It can be connected with offset printing machines, flexo printing machines, gravure printing machines and other printing equipment for in-line die-cutting, so it has a wide range of applications. . One drum is equivalent to the impression cylinder, and pressure is applied during die cutting; the other is a drum die. There are two major types of roller cutters: wood and metal. The former is mainly used for die-cutting thick corrugated cardboard. The latter has metal roller cutters that are processed by chemical etching or electronic engraving, and are mainly used for the die-cutting of adhesive labels and trademarks. , There is also a metal drum cutter is mainly used in high-end long-term products, using the pressure cut or shear type.

Circular die-cutting die-cutting machines are rarely used in the market at present, and there are no professional manufacturers in China. We will not go into details here.

Flat die-cutting die cutting machine is currently the most widely used type, and is also the most domestic and foreign manufacturers. There are domestic manufacturers such as Shanghai Yahua, Tangshan Yuyin, Beiren Group, Henan Xinji Group, Beijing Shengli Weiye Printing Machinery Co., Ltd., etc.; foreign countries are Switzerland BOBST, Germany IMG, Japan ASAHI, American Standard Carton Machinery Company, Spain IBERICA, South Korea YoungShin Machinery Co., Japan IIJIMA and Heidelberg and other manufacturers. Flat die-cutting die-cutting machine can be used for various types of die-cutting, both manual semi-automatic die-cutting and automatic high-speed linkage die-cutting; it can not only cut corrugated cardboard, paper jam, self-adhesive, but also Die-cut rubber, sponges, metal plates, etc.

Vertical flat-press die cutting machine, commonly known as the tiger's beak, said that its work is similar to the mouth of the bite action, one said that it works unsafe and easy to hurt people, hence the name. In any case, the working characteristics of the vertical flat die-cutting press are vividly illustrated. The vertical flat die-cutting die cutting machine is mainly divided into two parts of the body and the pressure frame in the structure, and the die-cutting platen is mounted on the body. There are two types according to its action: single pendulum type and double pendulum type. The so-called single pendulum type refers to die-cutting, the pressure frame swings, the fuselage does not move (that is, the platen does not move), the platen is in contact with the lower part of the pressing frame, and the upper part is in contact with the upper part. When the end of the die-cutting, the upper part leaves first and the lower part leaves. This time, the stress is different, and the stress is uneven. Therefore, the use of less and less, slowly eliminated. The double pendulum type means that when the die is cut, both the airframe and the pressure frame have an action. Before the contact, the pressure plate lithographic plate and the platen table are parallel, and the contact form is parallel movement, so the pressure is large and uniform. Most of the vertical flat die cutting machines currently produced fall into this category. Vertical flat die-cutting die cutting machines can be divided into semi-automatic and fully-automatic types according to the degree of automation. At present, the domestic production of vertical flat die cutting machine (Tiger mouth) is mainly semi-automatic, die-cutting is done by the machine, and paper feeding and collection are done manually. Because the quality of production and production efficiency are related to the proficiency of the operators and safety incidents are easy to occur, developed countries such as the United States have explicitly prohibited the use of such equipment. Because of the limited conditions of the country, the use of such equipment in China is still relatively common, and there are still many manufacturers. Because the price is cheap, production and sales volume is relatively large. For example, several factories that produce tiger's beaks in Wenzhou have annual sales of more than 100 units. However, it is believed that with the advancement of our country’s humanistic philosophy and the continuous improvement of labor laws and regulations, this semi-automatic die-cutting opportunity will be gradually eliminated.

Correspondingly, a fully automatic vertical flattening die cutting machine has been developed at home and abroad. It automatically completes paper feeding, die cutting or bronzing, and paper collection. The typical equipment in China is the TYM750 hot stamping die-cutting machine developed by Beiren Group in 2003. The machine is a post-press equipment with advanced level at home and abroad. It has two functions of die cutting and hot stamping. The whole process of die cutting and hot stamping is automatically completed from paper feeding, die cutting or hot stamping, to the delivery of paper, and the operation is simple. High degree of automation, widely used in paper, cardboard, hot stamping, embossing and die cutting, can also be applied to some other printing materials die cutting and hot stamping. Because of its advanced technology and high degree of automation, the corresponding product prices are high. At present, the promotion of the product in China is difficult, mainly to Europe and the United States.

Horizontal flat die cutting machine, there are two ways to feed: flat sheet and web, in addition to die cutting can also have the function of stripping and bronzing. The horizontal flat die-cutting die-cutting machine for web-feeding is mainly used for die-cutting of printed matters such as adhesive labels and trademarks. Flat Sheet Horizontal Flat Press Die Cutting Machine is the most widely used and fastest-growing machine. There are many manufacturers, known companies such as Bosch, Heidelberg, etc., and domestic companies such as Beiren Group, Shanghai Yahua, Taiwan Everlasting, Tangshan Yuyin, and Victory Albert, etc. have relatively fierce market competition. The main features are high die-cutting pressure and wide range of die-cutting, from 0.1mm white paper to ≤ 5mm corrugated paper.

Development trend of die-cutting equipment

1. Development of automation, intelligence, and multi-functionalization

　　 Data communication between multiple programmable controllers of the die-cutting machine; LCD intelligent operation display screen, man-machine dialogue; optical fiber sensor detection cursor, precise positioning; digital servo; surface tension control of holographic aluminum foil; hot stamping holographic machinery Precision manufacturing technologies will continue to be applied. In addition to die cutting, it is also required to be able to be hot stamped and automatically stripped. Take the example of the use of the North American Group's TIMM750 hot stamping die-cutting machine in the United States. Each worker can manage four devices at the same time, from paper feeding, die cutting or hot stamping, to paper delivery. The user does not require absolute high Speed, but stable and reliable.

2. The demand for linkage lines of circular presses and die cutting machines will be further expanded

　　 Circular press die cutting machine can be conveniently combined with offset printing, flexo printing, gravure printing and other printing methods (web feed) to form a printing and die-cutting production line. The tension control system for web through paper can improve printing, die-cutting, Positioning and registering accuracy of indentation; production and processing in linkage mode can increase production efficiency. Circular die-cut structure is line contact, low pressure, long service life of die-cutting rollers. In addition, the fastest-growing part of packaging printing is film and metal foil, and it also presents new opportunities for round press die cutting machines.

3, the continuous application of digital information technology

　　 At present, the printing technology has entered the era of digital information, and the same digital information technology is gradually applied to die-cutting equipment. There are two main explanations for the digitalization of die-cutting machines. One is the digital interface technology, that is, the requirements of the JDF technology on the die-cutting machine, which is mainly used for the acceptance and feedback of data information; the other one can be interpreted as non-version die-cutting, that is, the image data of the prepress system is directly controlled and cut. Head, die-cutting of printed sheets, adapting to short-page personalized die-cutting jobs.