Hollow sound attenuation spiral pipe extrusion mold

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...

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 pi

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