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[CN 202111163085.1] large tonnage cold forging hydraulic press die noise reduction device
[CN 202111163085.1] Title of a large-tonnage cold forging hydraulic press die noise reduction device: Application number of a large-tonnage cold forging hydraulic press die noise reduction device: CN 202111163085.1 Applicant: Hubei Zhihetong Machinery Co., Ltd. Application date: 2021-9-30 Patent type: Invention application The present invention discloses a large-tonnage cold forging hydraulic press die noise reduction device, it comprises a body, a first noise reduction cover arranged outside the body, a noise reduction assembly arranged inside the first noise reduction cover and a second noise reduction cover arranged above the first noise reduction cover, a mold base is installed inside the body, the inside of the first noise reduction cover and the second noise reduction cover are both arranged to be vacuumed, the noise reduction assembly comprises a noise reduction module, and the noise reduction module comprises an ANC chip, a radio microphone and a radio microphone, specifically, the invention relates to the technical field of noise reduction of a die of a cold forging hydraulic press. The die noise reduction device for large-tonnage cold forging hydraulic press, on the basis of the first noise reduction cover and the second noise reduction cover of the machine body, is provided with a noise reduction module, uses a radio microphone to collect noise, then analyzes and creates an anti-phase sound wave through ANC chip, then outputs sound through the radio microphone, reduces the amplitude of noise through the principle of ripple interference, and increases the active noise reduction function of the device.
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