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A processing template for making a flexible microporous sound-absorbing membrane and a manufacturing method of the flexible microporous sound-absorbing membrane

A manufacturing method and micromachining technology, applied in the field of vibration reduction and noise reduction, can solve the problem of difficulty in manufacturing a flexible microporous sound-absorbing film that requires acoustic noise reduction, and achieve a simple manufacturing method, fast processing speed, and small volume. Effect

Inactive Publication Date: 2018-10-09
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to solve the defect that it is difficult to produce a flexible microporous sound-absorbing membrane that meets the requirements of acoustic noise reduction in the prior art, and to provide a processing template for making a flexible microporous sound-absorbing membrane and a flexible microporous sound-absorbing membrane. Membrane production method to solve the above problems

Method used

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  • A processing template for making a flexible microporous sound-absorbing membrane and a manufacturing method of the flexible microporous sound-absorbing membrane
  • A processing template for making a flexible microporous sound-absorbing membrane and a manufacturing method of the flexible microporous sound-absorbing membrane
  • A processing template for making a flexible microporous sound-absorbing membrane and a manufacturing method of the flexible microporous sound-absorbing membrane

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Embodiment Construction

[0058] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0059] Such as figure 1 As shown, a processing template for making a flexible microporous sound-absorbing membrane according to the present invention includes an upper template 1 . Such as figure 2 As shown, the lower template 2 is a single template manufacturing method used in the prior art, which has the problems of low porosity and easy adhesion during the manufacturing process. The lower template 2 is provided with a cylinder array 4 , and the cylinder array 4 is an array set composed of a plurality of cylinders 6 .

[0060] Such as image 3 As shown, the upper formwork 1 is used to cooperate with the lower formwork 2, and the upper formwork 1 is hinged on the lower formwork 2. The upper template 1 is provided with a round ho...

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Abstract

The invention relates to a machining template used for manufacturing a flexible micro-hole sound absorbing film and a manufacturing method for the flexible micro-hole sound absorbing film. Compared with the prior art, the defect that a flexible micro-hole sound absorbing film meeting the acoustic noise reduction requirement is hard to manufacture is overcome. The machining template comprises an upper template body. The upper template body is provided with circular hole arrays. Each circular hole array comprises a plurality of circular holes. The upper template body is hinged to a lower template body. When the upper template body is pressed on the lower template body, cylinder arrays are inserted in the circular hole arrays. The diameter of cylinders ranges from 10 microns to 500 microns, and the height of the cylinders ranges from 60 microns to 3.01 millimeters. The diameter of the circular holes is larger than the diameter of the cylinders. The depth of the circular holes is larger than the height of the cylinders. The practicable, economical and environment-friendly manufacturing method and machining device are provided according to the manufacturing complexity of the flexible micro-hole sound absorbing film, and noise reduction requirements of devices of different shapes can be met.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and noise reduction, in particular to a processing template for manufacturing a flexible microporous sound-absorbing membrane and a method for manufacturing the flexible microporous sound-absorbing membrane. Background technique [0002] Professor Ma Dayou proposed that the micro-perforated plate sound-absorbing body is an important sound-absorbing material, which has excellent noise reduction effect, has the advantages of moisture resistance, high temperature resistance, no pollution, and can withstand the impact of high-speed airflow. It has been widely used in noise control. In various fields, it is known as the most potential green sound-absorbing structure in the 21st century. [0003] The micro-perforated plate sound absorber is a resonant sound-absorbing structure formed by the combination of the micro-perforated plate and the cavity behind the plate. The most important componen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/38B29C41/04B29C41/02B29C33/38
CPCB29C33/3814B29C33/3828B29C33/3842B29C33/3892B29C41/02B29C41/04B29C41/38
Inventor 孔德义张晓晓丁宏宇王兵李山山
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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