For many colleagues who have initially contacted the mold industry or played a functional management or sales position in the mold industry, the understanding of molds is very vague and difficult to understand. Therefore, many mold companies will let the in-service personnel carry out internships at the production site at the beginning. Only in the process of internship can they get to know the basic knowledge of the mold at a close distance. The following is the principle of some very image molds, which brings some different understandings.
Stamping die
Stamping die according to the nature of the process: punching die, bending die, drawing die, forming die and riveting die.
1. Blanking die: a separate mold is produced along a closed or open contour, such as blanking die, punching die, cutting die, slit die, trimming die, cutting die and so on.
2. Bending mold: a mold for bending a sheet blank or other blank along a straight line (bending line) to obtain a workpiece of a certain angle and shape.
3. Drawing die: it is a mold that makes a blank of sheet material into an open hollow part, or further changes the shape and size of the hollow part.
4. Forming die: it is a mold that directly or reproduces the blank or semi-finished workpiece according to the shape of the convex and concave molds, and the material itself only produces the local plastic deformation, such as bulging die, shrinking die, flaring die, undulating forming die, flanging die, shaping die and shaving die.
5. Riveting die: it is the use of external force to connect or join the participating parts in a certain order and manner to form a whole.
According to the degree of process combination classification, the mold can be divided into four categories: single-process mode, composite mode, progressive die, and transfer die.
1. Single-step mold: in one stroke of the press, only one mold of the stamping process is completed.
2, Composite mold: only one station, in the first stroke of the press, two or more stamping process of the mold are completed at the same station simultaneously.
3. Progressive die (also called continuous die): there are two or more stations in the feeding direction of the blank, in the one stroke of the press, two or more are completed one by one at different stations.
4. Transfer mode: it combines the characteristics of single-process mode and progressive die, and realizes the rapid transfer of products in the mold by using the robot transfer system, which can greatly improve the production efficiency of the product, reduce the production cost of the product, save the material cost, and the stable and reliable quality.
Depending on the processing methods of the product, the molds can be divided into five categories: punching and shearing die, bending die, drawing die, forming die and compression die.
1. Punching and cutting die: it is finished by shearing, the commonly forms include shearing die, blanking die, punching die, trimming die, whole edge die, hole punching die and punching die.
2. Bending mold: it is a shape that bends the flat blank into an angle. There are many different types of molds in terms of the shape, precision and production volume of the parts, such as ordinary bending dies, cam bending dies, and crimping dies, arc bending dies, bending punch dies and twisting dies.
3, Pumping mold: pumping mold is a flat blank made of a seamless container with bottom.
4. Forming mold: changing the shape of the blank by various local deformation methods, the forms include a convex sheet forming die, a curl forming die, a neck forming die, a hole flange forming die, and a round edge forming die.
5, Compression mold: strong pressures are uesd to make the metal blank flow and deform into the desired shapes, including extruded die, embossing die, stamping die and end pressure die.
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