CN1280264A - Sound insulating plastic pipe and its producing method - Google Patents
Sound insulating plastic pipe and its producing method Download PDFInfo
- Publication number
- CN1280264A CN1280264A CN 00112325 CN00112325A CN1280264A CN 1280264 A CN1280264 A CN 1280264A CN 00112325 CN00112325 CN 00112325 CN 00112325 A CN00112325 A CN 00112325A CN 1280264 A CN1280264 A CN 1280264A
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- sound insulating
- plastic pipe
- mould
- insulating plastic
- tube wall
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The sound insulating plastic pipe is a sandwiched structure with homogeneously distributed holes parallel to pipe wall inside the sandwiched layer between the outside and the internal layers. During its production, plastic grains and heated to melt and the melt is extruded in mold to form holes with needles of irregular elliptic cross section and then cooled. The sound insulating plastic pipe thus produced has sound insulating, anti-freezing and anti-shock property and is used in conveying various gas and liquid.
Description
The present invention relates to a kind of sound insulation, antifreeze, have the plastic tube and the manufacture method thereof of higher resistance to compression and impact strength.
The PVC sound insulation pipe of Shi Yonging in the market, tube wall is a sandwich structure, the centre is provided with stabilizer, owing to do not have passive PVC stiffening rib between two walls, inside and outside wall and stabilizer drive fit, so pulling force and impact strength reduce, and sound insulation, effect of heat insulation are relatively poor.Need two injection machines be 90 degree direction injection mouldings when producing this tubing, the inside and outside wall of an injection moulding tubing wherein, another injection moulding interlayer stabilizer is made complicatedly, and amount of investment is big.
The purpose of this invention is to provide a kind of sound insulation, antifreeze, the sound insulating plastic pipe and the manufacture method thereof of gaining in strength.
For achieving the above object, a kind of sound insulating plastic pipe of the present invention, tube wall are inside and outside interlayer configuration state, are provided with the hole that is evenly distributed between the inside and outside interlayer of tube wall, and hole and tube wall are parastate.
The hole of sound insulating plastic pipe is all ordered states of ring, and the hole cross section is irregular ellipticalness, and inner tube wall place radian is less, and outer tube wall place radian is bigger.
The manufacture method of a kind of sound insulating plastic pipe of the present invention is to enter injection machine with plastic pellet, heating, fusion, clamp-on mould, be irregular elliptoid vent needle pore-forming cooling forming through the cross section in mould, mould mainly is made up of charging mould, discharging mode, plug, vent needle, shunt, supported flange, hold-down bolt.
The cross section of vent needle in the mould discharging forming station is irregular ellipticalness, and tube material inwall side radian is less, and tube material outer wall side radian is bigger, and vent needle is the L type at the shunt outlet position of mould, and the other end stretches out beyond the die orifice of discharging mode.
Owing to be provided with the hole that is evenly distributed between the inside and outside interlayer of tube wall, played sound insulation preferably, antifreeze effect; Be provided with and manage inside and outside wall all-in-one-piece stiffening rib between the hole, have higher resistance to compression and impact strength, and reduced raw-material expending, production technology is simple.
Because the method that adopts injection machine and mould to combine, make it be applicable to the processing of various plastic tubes, the vent needle that mould adopts sectional area to be irregular ellipse carries out moulding, vent needle extends to the cooling and shaping that discharging mode is convenient to pipeline in addition, vent needle is irregular ellipticity at the sectional area of discharging forming station, the sectional area of discharging pressure stage is round shape, be convenient to fill up rapidly the space at dead angle from the feed liquid that shunt is extruded, mould is provided with supported flange, hold-down bolt, is convenient to mould in time cleaning and replacing vent needle.Vent needle is the L type at mould shunt outlet position, is convenient to fixing in case taken off by crowded.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Accompanying drawing 1 is the sectional view of a kind of sound insulating plastic pipe of the present invention
The die structure dwg that accompanying drawing 2 uses for the manufacture method of a kind of sound insulating plastic pipe of the present invention
According to shown in Figure 1, the tube wall of a kind of sound insulating plastic pipe of the present invention is inside and outside interlayer configuration state, be provided with the hole that is evenly distributed between the inside and outside interlayer of tube wall, hole and tube wall are parastate, inner tubal wall, stiffening rib and outer tube wall fuse, and the hole cross section of sound insulating plastic pipe is all states of ring, and the hole cross section is irregular ellipticalness, inner tube wall place radian is less, and outer tube wall place radian is bigger.
According to shown in Figure 2, the manufacture method of a kind of sound insulating plastic pipe of the present invention enters plastic extruder with plastic pellet, heating, and mould is clamp-oned in fusion, is irregular elliptoid vent needle pore-forming cooling forming in mould through the cross section.
The mould Far Left is a material feeding mouth 8, the centre of the charging mould 1 of material feeding mouth 8 and shunt 5 is a feed zone 9, plug 3 is fixed on the shunt 5 by hold-down bolt 7, discharging mode 2 combines with charging mould 1 by supported flange 6, be provided with around the plug 3 and be evenly distributed, a circle vent needle 4 that is parastate with it, vent needle 4 one ends are L-shaped, be fixed on the outlet position of shunt 5, the other end stretches out discharging mode 2 one segment distances, so that cooling, vent needle 4 is circular at the sectional area of discharging pressure stage 10, vent needle 4 is irregular ellipticity at the sectional area of discharging forming station, and tube material inwall side radian is less, and tube material outer wall side radian is bigger.
Claims (6)
1, a kind of sound insulating plastic pipe, tube wall are inside and outside interlayer configuration state, it is characterized in that being provided with the hole that is evenly distributed between the inside and outside interlayer of tube wall, and hole and tube wall are parastate.
2, a kind of sound insulating plastic pipe according to claim 1 is characterized in that the hole cross section is all states of ring.
3, a kind of sound insulating plastic pipe according to claim 2 is characterized in that the hole cross section is irregular ellipticalness, and inner tube wall place radian is less, and outer tube wall place radian is bigger.
4, a kind of manufacture method of sound insulating plastic pipe, it is characterized in that it enters plastic extruder with plastic pellet, heating, fusion, clamp-on mould, through becoming irregular elliptoid vent needle pore-forming cooling forming, mould mainly is made up of charging mould (1), discharging mode (2), plug (3), vent needle (4), shunt (5), supported flange (6), hold-down bolt (7) in mould.
5, the manufacture method of a kind of sound insulating plastic pipe according to claim 4 is characterized in that the cross section of vent needle (4) in the mould discharging forming station is irregular ellipticalness, and tube material inwall side radian is less, and tube material outer wall side radian is bigger.
6, the manufacture method of a kind of sound insulating plastic pipe according to claim 4 is characterized in that vent needle (4) is the L type at shunt (5) the outlet position of mould, and the other end stretches out beyond the die orifice of discharging mode (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112325 CN1280264A (en) | 2000-06-09 | 2000-06-09 | Sound insulating plastic pipe and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112325 CN1280264A (en) | 2000-06-09 | 2000-06-09 | Sound insulating plastic pipe and its producing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1280264A true CN1280264A (en) | 2001-01-17 |
Family
ID=4582191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00112325 Pending CN1280264A (en) | 2000-06-09 | 2000-06-09 | Sound insulating plastic pipe and its producing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1280264A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252139A (en) * | 2010-05-21 | 2011-11-23 | 南通凯斯特纺织品有限公司 | Sound insulation tube |
| CN103112113A (en) * | 2012-12-23 | 2013-05-22 | 大连华工创新科技有限公司 | One-time forming device for elastomer-wrapping soft-foam polyurethane |
-
2000
- 2000-06-09 CN CN 00112325 patent/CN1280264A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252139A (en) * | 2010-05-21 | 2011-11-23 | 南通凯斯特纺织品有限公司 | Sound insulation tube |
| CN103112113A (en) * | 2012-12-23 | 2013-05-22 | 大连华工创新科技有限公司 | One-time forming device for elastomer-wrapping soft-foam polyurethane |
| CN103112113B (en) * | 2012-12-23 | 2015-12-09 | 大连华工创新科技股份有限公司 | Polyurethane elastomer wraps up soft bubble one-shot forming apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |