A radiator fin forming machine does not refer to a single machine, but rather to a specialized automated equipment system designed to efficiently and precisely stamp or roll metal strips (primarily aluminum strips) into fins of specific shapes. It is widely used in the production of heat transfer components such as heat exchangers. This article provides a brief introduction to a type of fin forming machine commonly used in the air separation radiator industry.
I. Introduction to the Principle of the Fin Forming Machine
In existing technology, the forming process typically involves a cam mechanism driving an upper blade and a lower blade to stamp metal sheets, creating a corrugated shape. The design of such equipment emphasizes precise control over corrugation pitch and height. For instance, adjustable pitch can be achieved by modifying the cam profile, ensuring consistency in fin dimensions.
1.Core Principle: Utilizing a press in conjunction with high-precision dies to perform high-speed stamping and forming of metal strips.
2.Core Equipment: High-speed press, high-precision stamping dies.
3.Main Components: Automatic decoiler, feeding device, high-speed stamping host, CNC system, cutting-off device.
4.Applicable Fins: Complex, high-precision profile fins for plate-fin heat exchangers used in air separation equipment.
II. Introduction to Fin Forming Machine Parameters
A typical corrugation forming machine structure includes components such as a drive motor, transmission shaft, upper forming cam, lower sliding seat, and feeding cam. When the transmission shaft rotates, through the interaction of cams and rollers, it drives the upper slide block and lower sliding seat in an up-and-down motion, thereby actuating the blades to complete forming and feeding actions.
Regarding equipment parameters, high-speed fin forming machines can achieve a processing range with corrugation heights of 1–12 mm and pitches of 4–10 mm. Machining accuracy can reach ±0.05 mm, with a forming frequency of 130 strokes per minute. Suitable materials include aluminum, copper, and stainless steel, typically with a thickness range of 0.08–0.4 mm. Concerning discharge, an improved discharge mechanism, through the design of upper and lower discharge blocks, prevents chip accumulation and ensures smooth discharge.
III. Characteristics of This Type of Fin Forming Machine
1.High Precision and Flexibility: Advanced equipment can achieve extremely high dimensional control accuracy and allows for flexible adjustment of parameters such as fin height and pitch within a certain range to produce fins of different specifications.
2.High Efficiency and Integration: By increasing stamping frequency and forming width, and integrating multiple processes (such as decoiling, stamping, cutting-off), production efficiency is significantly enhanced. The latest designs also tend to integrate multiple stamping processes within a single machine to save space and transfer time.
3.High Degree of Automation: The production process is typically controlled by a CNC system, achieving full-process automation from feeding and forming to cutting-off. This simplifies operation and ensures stable product quality.
IV. Industries Suitable for This Type of Fin Forming Machine
This fin forming machine is primarily used for high-end plate-fin heat exchangers in industries such as air separation and chemical processing. The fin shapes are complex (e.g., corrugated, serrated) and demand extremely high precision and strength. Key considerations include the equipment's capability in controlling springback for complex profiles and die compensation technology.
Currently, the high-precision fin forming technology and equipment for plate-fin heat exchangers developed in China have reached internationally advanced levels, breaking foreign monopolies. They have been successfully applied in large domestic and international air separation enterprises. The technological development of these fin forming machines is no longer limited to a single forming unit but is evolving towards fully automated production lines encompassing processes like automatic decoiling, forming, cutting-off, and fin insertion. The intelligence level of the control systems is also continuously improving.
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