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Hollow sound attenuation spiral pipe extrusion mold

A technology of sound-absorbing spiral pipe and extrusion die, which is applied in the field of plastic machinery, can solve the problems that the pipe can not achieve the effect of sound-absorbing, the water flow cannot flow against the pipe wall, and the noise pollution of the surrounding environment, so as to achieve convenient and reliable installation and save materials. , the effect of low cost

Inactive Publication Date: 2011-09-21
YONGGAO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the drainage pipes installed in the existing buildings are single pipes or composite pipes. When they are transporting fluid objects, they will generate a lot of noise, and the noise will be transmitted almost unreservedly, causing the surrounding environment to be disturbed. noise pollution
Although the composite pipe can block part of the noise, there are problems that the water cannot flow against the pipe wall, but the noise reduction effect of the pipe is still poor, and the composite pipe consumes materials, high cost, and expensive. Therefore, it is necessary to develop a sound reduction effect. It also saves materials, low-cost pipes and processing molds
For example, a kind of hollow sound-absorbing pipe molding equipment provided by application number 200810058172.9 includes conical twin-screws and a forming mold connected with the conical twin-screws. The forming mold is provided with a collection cavity and a distribution cavity. There is an evacuation frame with secondary flow, so that the processed pipe wall can form axial through holes through the interval of the evacuation frame, forming a hollow muffler pipe, but the inner wall of the pipe is still smooth, and the water flow cannot flow against the pipe wall. It cannot achieve the effect of noise reduction by itself, but only relies on the hollow pipe wall to absorb the noise generated by the water flow on the inner wall, and can only function as a noise barrier

Method used

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Embodiment Construction

[0010] The invention relates to an extrusion die of a hollow sound-absorbing spiral pipe, such as Figure 1-Figure 3 As shown, it includes a connection seat 1 installed on the head of the extruder, the connection seat 1 is connected to the head body 3, the outer wall of the head body 3 is installed with a die 7, and a mandrel 8 and a hollow core strip 10 are installed in the die 7 , the connecting seat 1 and the head body 3 are provided with a shunt cone 4, the shunt cone 4 is connected to the current collecting cone 5 through the shunt plate 2, and a shunt cavity 17 is formed between the shunt cone 4 and the connecting seat 1, and the current collecting cone 5 A collecting cavity 18 is formed between the head body 3, which is characterized in that a rotating shaft 6 is installed in the collecting cone 5, the rotating shaft is driven by power, the rotating shaft is connected to the mandrel 8, and a spiral core is installed on the outer wall of the mandrel 8 Stick 9. In this t...

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Abstract

The invention discloses a hollow sound attenuation spiral pipe extrusion mold, which comprises a connecting seat arranged on a machine head of an extrusion machine, wherein the connecting seat is connected with a machine head body; an opening mold is arranged on the outer wall of the machine head body; a core shaft and a hollow loose core strip are arranged in the opening mold; a flow distribution spine is arranged in the connecting seat and the machine head body, and is connected with a flow combination spine through a flow distribution plate; a flow distribution cavity is formed between the flow distribution spine and the connecting seat; and a flow combination cavity is formed between the flow combination spine and the machine head body. The mold is characterized in that: a rotating shaft is arranged in the flow combination spine, is driven by power and is connected with the core shaft; a spiral core rod is arranged on the outer wall of the core shaft; and a spiral rib groove is formed on the spiral core rod. In the scheme, a spiral rib strip is formed on the inner wall of an extruded pipe, water flow flows downward along the spiral rib strip, the impact of the water flow on the wall of the pipe is reduced, and the noise generated when the water flow impacts the wall of the pipe is reduced, so that the aims of sound attenuation is fulfilled; and the extrusion mold has extremely prominent advantages. Therefore, the spiral core rod is used and the spiral rib groove is formed on the spiral core rod, so that the mold has ingenious concepts and a reasonable structure, and can be used for extruding a practical pipe out when driven by the power.

Description

technical field [0001] The invention relates to an extrusion die for a hollow sound-absorbing spiral pipe fitting, which belongs to the field of plastic machinery. Background technique [0002] Most of the drainage pipes installed in the existing buildings are single pipes or composite pipes. When they are transporting fluid objects, they will generate a lot of noise, and the noise will be transmitted almost unreservedly, causing the surrounding environment to be disturbed. noise pollution. Although the composite pipe can block part of the noise, there are problems that the water cannot flow against the pipe wall, but the noise reduction effect of the pipe is still poor, and the composite pipe consumes materials, high cost, and expensive. Therefore, it is necessary to develop a sound reduction effect. It also saves materials, low-cost pipes and processing molds. For example, a kind of hollow sound-absorbing pipe molding equipment provided by application number 200810058172...

Claims

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Application Information

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IPC IPC(8): B29C47/24B29C48/33
Inventor 张建均王秋雷陈爱平肖峰周正杰
Owner YONGGAO CO LTD
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