There are three types of die-cutting machines based on the different printing methods - round-to-round, round-to-flat, and flat-to-flat. They can be categorized into vertical and horizontal placement, as well as manual (semi-automatic) and automatic based on their automation level. In addition to die-cutting, some machines have stamping functions, known as hot stamping die-cutting machines, while others have automatic waste removal functions, known as waste removal die-cutting machines. Round-to-round die-cutting machines have the characteristics of wire contact, low pressure, and high production efficiency. They can be connected to printing equipment such as offset presses, flexo presses, and gravure presses for inline die-cutting, making them widely used.
Firstly, the operators should pay attention to dust prevention and cleaning. During actual production, die-cutting cartons will produce a large amount of waste paper edges and fuzz, which, if not taken care of, may enter the chain transmission parts, die-cutting parts, movable platforms, and some rotating parts, and even block the photoelectric sensors, causing malfunctions. Therefore, cleaning the body of the automatic die-cutting machine is essential to ensure its flawless operation. Secondly, the oil change of the die-cutting machine. The main action of the die-cutting machine is driven by the main motor to drive the slide bar and pulleys, which then drives the four elbow rods to move at a speed of 6,000 sheets per hour. Without proper lubrication and cooling, it can be very troublesome.
The working principle of the automatic die-cutting machine is to use the die-cutting knife, steel knife, metal mold, steel wire (or steel plate engraved into a template), and apply a certain pressure through the embossing plate to cut the printed product or cardboard into a certain shape. If the entire printed product is cut into a single graphic product, it is called die-cutting; if steel wire is used to press marks or leave bent grooves on the printed product, it is called scoring; if two templates are used and the mold is heated to a certain temperature to emboss three-dimensional patterns or fonts on the surface of the printed product, it is called hot stamping; if one base material is laminated on another, it is called laminating; if the part other than the product is removed, it is called waste removal. All of these can be collectively referred to as die-cutting technology.
Die-cutting is the most commonly used process in package printing, which uses the die-cutting knife to combine the die-cutting plate according to the design requirements. Under the pressure, it cuts the printed product or other billet material into the required shape or cut marks, which is a molding process. Scoring is a process that uses a scoring knife or scoring mold to press the line marks on the plate under the action of pressure, or bend and shape by using a rolling line wheel at the predetermined position on the plate. Usually, the die-cutting knife and scoring knife are combined in the same template, and the die-cutting and scoring processing is carried out simultaneously on the automatic die-cutting machine process, which is referred to as die-cutting. The main process of the die-cutting and scoring process is: plate mounting, pressure adjustment, rule definition, auxiliary material pasting, trial die-cutting, formal die-cutting and scoring, waste removal, roll up or cutting and sheeting into pieces, and packaging.