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Multilayer noise reduction and thermal insulation hush pipe and production equipment therefor

A production equipment, multi-layer technology, applied in the direction of mechanical equipment, pipes, rigid pipes, etc., can solve problems such as insufficient connection between pipes and pipes, changes in the size of the gaps, changes in thermal expansion and contraction rates, and easy generation of gaps. good performance, improve the performance of heat insulation and noise reduction, and improve the effect of noise reduction

Active Publication Date: 2017-09-15
HUZHOU XINXING AUTOMOBILE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing silencer pipes generally use two pipes with different diameters to fit together, and then weld the two ends of the pipes. The silencer pipes produced in this way are not tightly connected between the pipes, and gaps are likely to occur, and the size of the gaps Changes due to the different rates of thermal expansion and cold contraction of the two pipes

Method used

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  • Multilayer noise reduction and thermal insulation hush pipe and production equipment therefor
  • Multilayer noise reduction and thermal insulation hush pipe and production equipment therefor
  • Multilayer noise reduction and thermal insulation hush pipe and production equipment therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Such as figure 1 As shown, a multi-layered noise-reducing, heat-insulating and sound-absorbing pipe includes an outer layer 93, an inner layer 91, and an intermediate layer 92 located between the outer layer 93 and the inner layer 91, the intermediate layer 92 being glass Fiber cloth, the outer layer 93 and the inner layer 92 are made of stainless steel, and the outer layer 93, the intermediate layer 92 and the inner layer 91 are pressed, formed and welded to form a tube.

[0025] Such as figure 2 As shown, a multi-layer noise-reducing, heat-insulating and sound-absorbing pipe production equipment includes a feeding device 1, a centering device, a cold pressing device 3, a forming device, and a welding device 8. The feeding device 1, a centering device, and a cold pressing device 3. Both the forming device and the welding device 8 are fixed on the platform. The feeding device 1 includes a first reel 11, a second reel 12 and a third reel 13, the first reel 11 is...

Embodiment 2

[0033] Example 2: Such as Image 6 As shown, the difference from Embodiment 1 is that the thickness of the baffle 711 gradually increases from the outer edge to the center, so that the pipe seam of the crimped pipe has a flared structure, so that when the pipe seam is welded, the outer layer There are more solders for steel strips and less solder for the inner steel strips to ensure that the inner wall of the muffler tube is relatively flat.

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PUM

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Abstract

The invention relates to the technical field of automobile exhaust pipes, in particular to a multilayer noise reduction and thermal insulation hush pipe and production equipment therefor. The multilayer noise reduction and thermal insulation hush pipe comprises an outer layer, an inner layer and an intermediate layer located between the outer layer and the inner layer. The intermediate layer is made of glass fiber cloth. The outer layer and the inner layer are made of stainless steel. The outer layer, the intermediate layer and the inner layer are laminated, molded and welded to form a pipe body. According to the multilayer noise reduction and thermal insulation hush pipe, the glass fiber cloth is arranged between the two layers of stainless steel, and the performance of noise reduction of the hush pipe is greatly improved; according to the hush pipe produced through the production equipment, close combination of pipes made of different materials is realized, and the hush pipe has the advantages that the integration is good, and the inner layer and the outer layer of the pipe are connected closely; the situation that thermal expansion and cold contraction cause the inner layer and the outer layer to separate is avoided; the inner layer and the outer layer are made to vibrate independently; and the noise reduction effect of the hush pie psi improved.

Description

Technical field [0001] The invention relates to the technical field of automobile exhaust pipes, in particular to a multi-layered noise reduction, heat insulation and noise reduction pipe and production equipment thereof. Background technique [0002] Automobile muffler tube is one of the important parts of automobiles, and the basic raw material for making muffler tube is mainly stainless steel. Existing muffler pipes generally use two pipes with different diameters to be fitted together, and then welded at both ends of the pipe. The muffler pipe produced in this way is not tightly connected between the pipe and the pipe, which is easy to produce gaps, and the size of the gaps It changes due to the different speeds of thermal expansion and contraction of the two pipes. Summary of the invention [0003] One of the objectives of the present invention is to provide a multi-layered noise reduction, heat insulation and noise reduction pipe, which has the advantages of compact structu...

Claims

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Application Information

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IPC IPC(8): F16L9/21F16L9/14F16L57/00B21C37/083B21C37/09
CPCF16L9/14F16L9/21F16L57/00B21C37/083B21C37/09
Inventor 施新江吴才根金建良
Owner HUZHOU XINXING AUTOMOBILE PARTS