In industries such as packaging printing and electronic manufacturing, die-cutting knives play a crucial role. It can accurately cut various materials into specific shapes and sizes, meeting the packaging and assembly requirements of different products. The following is a detailed introduction to the structure and principle of die-cutting knives. I. Structure of Die-cutting Knives 1. Blade Part The blade of a die-cutting knife is its core component, directly determining the quality and precision of the cut. The blade is usually made of high-hardness alloy steel materials and undergoes precise grinding and heat treatment processes, endowing it with extremely high hardness, sharpness and wear resistance. The shape of the blade can be designed according to different cutting requirements. Common types include straight blades, beveled blades, and wavy blades, etc. Straight blades are suitable for cutting thinner materials such as paper and film, and the cutting effect is flat and smooth. The inclined edge has better performance when cutting thicker materials, which can reduce cutting resistance and improve cutting efficiency. Wavy blades are often used for some special cutting requirements, such as cutting materials with certain elasticity or when it is necessary to increase the friction at the cutting edge. 2. Blade part: The blade is the part that connects the cutting edge and the handle, and is usually made of high-strength steel. The design of the blade needs to take into account factors such as strength, rigidity and stability to ensure that no deformation or fracture occurs during the cutting process. The shape of the blade is generally rectangular or trapezoidal, and its thickness and width are selected according to different cutting requirements. Special treatments are usually carried out on the surface of the knife blade, such as chromium plating and titanium plating, to enhance its wear resistance and corrosion resistance. In addition, there will be some marks and scales engraved on the knife body, which is convenient for users to adjust and position during use. 3. The handle part: The handle is the hand-held part of the die-cutting knife and is usually made of materials such as plastic, wood or metal. The design of the knife handle needs to take into account ergonomic principles to ensure a good grip and operational comfort. The shape and size of the knife handle can be selected according to different user needs. Generally speaking, the length and width of the knife handle will be adjusted according to the size of the knife body and the cutting force. The surface of the knife handle is usually treated with some anti-slip measures, such as engraving anti-slip patterns or installing anti-slip rubber, to ensure that it does not slip during use. In addition, some accessories such as hand guards and hooks will be installed on the handle of the knife, which is convenient for users to operate and store during use.