Continuous die refers to the press in a stamping stroke, the use of ribbon stamping raw materials, in a pair of die with several different stations at the same time to complete multiple stamping processes of cold stamping die, die stamping is completed once, the material belt at a fixed distance to move once, until the product is completed.

Classification of continuous modules:

Continuous die (also known as progressive die, skip die) refers to the press in one stroke, in turn in several different positions, at the same time to complete multiple processes of the die. Blanking parts are gradually formed in continuous die. Continuous forming is a process method of process concentration, which can make cutting, notching, grooving, punching, plastic deformation, blanking and other processes complete on a pair of die. According to the actual needs of stamping parts, a number of stamping processes (called station in progressive die) are arranged in a certain sequence for continuous stamping. It can not only complete the blanking process, but also complete the forming process, and even the assembly process. Many complex stamping parts requiring multi-process stamping can be completely formed on a pair of die, which provides favorable conditions for high-speed automatic stamping. It can be seen that the continuous die is a kind of punching die with many stations and high efficiency.

Characteristics of continuous mode:

(1) A pair of continuous die can complete blanking, bending, forming, deep drawing and other processes. The press can punch one workpiece or process piece per stroke, so it has higher labor productivity than the composite die.

(2) The use of continuous die stamping can reduce the number of equipment, mold and workshop area, eliminating the transfer and storage of semi-finished products.

(3) Continuous die using coil material or belt material, feeding, discharging and laminating are easy to realize automation. Automatic continuous die stamping process, the body parts do not have to enter the dangerous area, safe operation.

(4) Each process of continuous die is dispersed at each station, and there is no problem of "minimum wall thickness" of composite die, so the die has higher strength and longer life.

(5) The continuous die has complex structure, high manufacturing precision, long cycle, high cost and difficult maintenance.

(6) Because each process is completed at different stations, the positioning cumulative error will affect the accuracy of the workpiece, so the workpiece precision of continuous die production is not high.