The die cutting machine is mainly used for die cutting, creasing and cold embossing of trademarks, cartons, greeting cards, etc. in the paper packaging and decoration industry. It is an important equipment for post-press packaging processing. The working principle of the die-cutting machine is to use a steel knife, a steel wire (or a template engraved from a steel plate), and apply a certain pressure through the impression plate to roll the printed product or cardboard into a certain shape. If the whole printed product is pressed and cut into a single graphic product, it is called die cutting; if the steel wire is used to extrude marks or leave groove marks on the printed product, it is called indentation; Embossing a pattern with a three-dimensional effect on the surface is called convex-concave imprinting, which can be collectively referred to as die cutting technology.
Types of die cutting machines
According to the different forms of stamping, die-cutting machines are mainly divided into three types: round flattening, round flattening, and flat flattening. According to the form of template placement, it can be divided into vertical and horizontal. According to the degree of automation, manual (semi-automatic) and automatic. From a functional point of view, in addition to die cutting, there is also a hot stamping function, which is called a hot stamping die cutting machine, and some have an automatic waste removal function, which is called a waste removal die cutting machine.
The characteristics of the circular pressure die cutting machine are line contact, low die cutting pressure, high production efficiency, and can be connected with printing equipment such as offset printing machines, flexo printing machines, gravure printing machines, etc. for inline die cutting, so the scope of application is relatively wide. . One cylinder is equivalent to an impression cylinder, and pressure is applied during die cutting; the other is a cylinder knife mold. There are two types of roller cutters: wood and metal. The former mainly cuts thick corrugated cardboard, and the latter has metal roller cutters processed by chemical corrosion or electronic engraving methods, which are mainly used for die cutting of adhesive labels and trademarks. , There is also a metal drum knife mold mainly used in high-grade long-term products, using pressure-cut or shear form.
Circular flat die cutting machines currently have few applications in the market, and there are no professional manufacturers in China, so I will not repeat them here.
Flat die cutting machine is currently the most widely used and most popular type, and is also the most widely used by domestic and foreign manufacturers. Domestic manufacturers include Shanghai Yahua, Tangshan Yuyin, Beiren Group, Henan Xinji Group, Beijing Shengli Weiye Printing Machinery Co., Ltd .; foreign countries include Swiss BOBST, German IMG, Japanese ASAHI, American Standard Carton Machinery Company, Manufacturers such as Spain IBERICA, Korea YoungShin Machinery Co., Ltd., Japan IIJIMA and Heidelberg. The flat die cutting machine can be used for various types of die cutting, both manual semi-automatic die cutting and automatic high-speed linked die cutting; it can die cut corrugated cardboard, cardboard, stickers, and Die cutting rubber, sponge, metal plate, etc.
The vertical flat die cutting machine, commonly known as the tiger's mouth, is said to be similar to the mouth biting action when it is working, and it is named because it is unsafe to work and easily hurts people. In any case, the working characteristics of the vertical flat die cutting machine are vividly explained. The vertical flat die cutting machine is mainly divided into two parts: the fuselage and the pressing frame. The die cutting plate is installed on the fuselage. There are two types according to its action: single pendulum and double pendulum. The so-called single pendulum type refers to that the press frame swings during die cutting, and the body does not move (that is, the plate table does not move). The plate table contacts the lower part of the press frame first, then the upper part contacts, and the upper part first leaves and the lower part leaves after die cutting In this way, the stress time is different and the stress is uneven, so it is used less and less and slowly eliminated. The double pendulum type means that both the fuselage and the press frame are in motion during die cutting. Before the contact, the press plate and the plate stage are parallel, and the form of contact between them is parallel movement, so the pressure is large and uniform. Most of the vertical flat die cutting machines currently produced are of this type. Vertical flat die cutting machine can be divided into semi-automatic and fully automatic types according to the degree of automation. At present, the domestic vertical flat die cutting machine (tiger mouth) is mainly semi-automatic, the die cutting is done by the machine, and the paper feeding and receiving are done manually. Since the production quality and production efficiency are related to the proficiency of operators and are prone to safety accidents, developed countries such as the United States have explicitly banned the use of such equipment. Due to national conditions, the use of this kind of equipment is relatively common in China, and there are many manufacturers. Due to the low price, the production and sales are relatively large. For example, several factories in Wenzhou that produce tiger mouths have more than 100 units per year. But I believe that with the advancement of our country's humanistic ideas and the continuous improvement of labor regulations, this kind of semi-automatic die-cutting opportunities will gradually be eliminated.
Correspondingly, fully automatic vertical flat die cutting machines have been developed at home and abroad, from paper feeding, die cutting or bronzing to paper collection. The domestic typical equipment is TYM750 hot stamping die cutting machine developed by Beiren Group in 2003. This machine is a post-press equipment with advanced level at home and abroad. It has two functions of die cutting and bronzing. The entire die cutting and bronzing process is completed automatically from paper feeding, die cutting or bronzing to paper collection. The operation is simple, High degree of automation, widely used in hot stamping, embossing and die cutting of paper and cardboard, as well as die cutting and hot stamping of some other printing materials. Because of its advanced technology, high degree of automation, and correspondingly high product prices, it is currently difficult to promote this product in China, and it is mainly sold to European and American countries.
Horizontal flat-bed die-cutting machine has two paper feeding methods: flat sheet and roll paper, in addition to die cutting, it can also have the functions of waste removal and bronzing. The horizontal flat-bed die-cutting machine with roll paper feeding method is mainly used for die-cutting of printed products such as adhesive labels and trademarks. Flat sheet horizontal flat-bed die-cutting machine is the most widely used and fastest-developing technology. There are many manufacturers, foreign well-known manufacturers such as Swiss Bost, Heidelberg, etc., domestic such as Beiren Group, Shanghai Yahua, Taiwan Heng, Tangshan Yuyin, Shengli Weiye, etc., the market competition is fierce. The main feature is that the die-cutting pressure is large and the die-cutting range is wide, from 0.1mm whiteboard paper to ≤5mm corrugated paper.
Development trend of die cutting equipment
1. Development in the direction of automation, intelligence and multi-function
Data communication between multiple programmable controllers of die-cutting machine; LCD intelligent operation display screen, man-machine dialogue; use optical fiber sensor to detect cursor, precise positioning; digital servo; holographic aluminum foil surface tension control; hot stamping holographic machinery Precision manufacturing technology will continue to be used. In addition to die-cutting, it also requires hot stamping and automatic waste removal. Taking Beiren Group's TYM750 hot stamping die cutting machine as an example in the United States, each worker can manage four devices at the same time, from paper feeding, die cutting or hot stamping, to paper collection, all are automatically completed, users do not require absolute high Speed, but requires stability and reliability.
2. The demand for the linkage line of the round die cutting machine will be further expanded
The round die cutting machine can easily form printing die cutting production lines with offset printing, flexo printing, gravure printing and other printing methods (roll paper feeding). The tension control system of the roll paper feeding can improve printing, die cutting, The positioning accuracy of the indentation; the production and processing in the form of linkage can improve the production efficiency. The circular die-cutting die-cutting structure has linear contact, low pressure and long service life of the die-cutting roller. In addition, the fastest growing parts in packaging and printing are films and metal foils, which also bring new opportunities for circular die cutting machines.
3. Continuous application of digital information technology
At present, printing technology has entered the era of digital information, and digital information technology is also gradually applied to die-cutting equipment. There are two main explanations for the digital approach 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 reception and feedback of data information; the other can be interpreted as no-plate die-cutting, that is, the graphic data of the pre-press system directly controls the cutting Head, die-cutting printed sheets, adapted to short-cut personalized die-cutting live parts.
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