Processing apparatus, control method for processing apparatus and heat exchanger

A control method for a processing apparatus, wherein the processing apparatus comprises an upper die assembly, a lower die assembly and a driving mechanism, the upper die assembly further comprises an upper die plate and a first cutter, the first cutter comprises a first cutting edge portion, one end of the first cutter away from the first cutting edge portion is connected to the upper die plate, the upper die assembly comprises a stripper plate and a first elastic element, the stripper plate is formed on one side of the upper die plate close to a second cutter, one end of the first elastic element is connected to the stripper plate, and another end of the first elastic element is connected to the upper die plate, a first via is formed on the stripper plate in a direction in which the first cutter moves, the lower die assembly is disposed opposite to the upper die assembly, the lower die assembly comprises the second cutter and a lower die plate, the lower die plate has an upper end portion facing the upper die assembly, the second cutter is fixed to the upper end portion, the second cutter comprises a second cutting edge portion higher than the upper end portion, and the driving mechanism comprises a first driver;

• the control method for the processing apparatus comprises:
• a step, in which a material is fed to the upper end portion, the first driver is activated, the first driver drives the upper die plate to move downward, the first cutter moves downward along with the upper die plate, the stripper plate moves downward synchronously, when the stripper plate moves to be in contact with the material, the lower die plate continues to move downward under an action of the first driver, the first elastic element is compressed, the first cutting edge portion starts to move downward along the first via, after the first cutting edge portion moves a preset distance, the first cutting edge portion is exposed out of the first via, and when the first cutting edge portion moves to a bottom dead position, the first cutting edge portion is interleaved with the second cutting edge portion so as to complete cutting the material;
• and
• a step, in which after the material cutting ends, the first driver drives the upper die plate to move upward, the upper die plate drives the first cutter to move upward, the first elastic element is stretched, the stripper plate is stationary with respect to the upper end portion under an elastic force of the first elastic element, when the first cutting edge portion moves upward between an upper port of the first via and a lower port of the first via, and the first driver drives the stripper plate to moves upward.