A numerical control forming machine for plate-fin heat exchanger fins

Abstract

The invention relates to a numerically-controlled fin forming machine of a plate-fin heat exchanger. The numerically-controlled fin forming machine comprises an upper main shaft (4) and a lower main shaft (12), wherein an upper cam (6) is installed on the upper main shaft (4), and an upper roller (7) which can be pushed by the upper cam (6) to do vertical reciprocating motion is installed under the upper cam (6); a lower cam (16) is installed on the lower main shaft (12), and a lower roller (17) which can be pushed by the lower cam (16) to do the vertical reciprocating motion is installed under the lower cam (16); and the upper main shaft (4) and the lower main shaft (12) are driven by a power mechanism to rotate. The numerically-controlled fin forming machine is characterized in that the power mechanism is a main shaft servo motor (1), and the main shaft servo motor (1) is directly connected with an upper speed reducer (2) and is connected with a lower speed reducer (11) through a telescopic connected shaft (10); the output shaft of the upper speed reducer (2) is connected with the upper main shaft (4) through a plum-shaped flexible coupling (3), and the output shaft of the lower speed reducer (11) is connected with the lower main shaft (12); the main shaft servo motor (1) is connected with a main shaft servo driver; and the main shaft servo driver is connected with a PLC (Programmable Logic Controller). According to the invention, the full numerical control of the fin forming machine of the plate-fin heat exchanger is realized.

Description

technical field [0001] The invention relates to a numerical control forming machine for plate-fin heat exchanger fins, which is mainly used for plate-fin heat exchanger fins in industries such as air separation equipment, chemical industry, engineering machinery, coal-to-oil, coal-to-gas, and automobiles of forming. Background technique [0002] Fins are an important core component of a heat exchanger. Fins can be divided into three basic types: straight, sawtooth, and corrugated, accounting for more than 80% of the entire heat exchanger volume. The accuracy of the fins directly affects the heat transfer efficiency and reliability of the plate-fin heat exchanger. , Safety performance. [0003] At present, the power mechanism of the fin forming machine uses a three-phase motor, and the torque of the three-phase motor is not enough in low-speed operation, which easily affects the processing quality of the punching machine; and the noise of the three-phase motor is too large ...

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Problems solved by technology

[0003] At present, the power mechanism of the fin forming machine uses a three-phase motor, and the torque of the three-phase motor is not enough in low-speed operation, which easily affects the processing quality of the punching machine; and the noise of the three-phase motor is too large during operation, and the speed cannot be modified in the jog state. The operation is unstable at high speed, and the inverter has no alarm output after the three-phase motor fails

[0004] In addition, the control precision of the existing fin forming machine is not high, and the mechanical error caused by the mechanical system cannot be eliminated, and the pitch adjustment speed is relatively slow

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