CN203567153U - Co-extrusion mould head for extruding plastic material with longitudinal wood grains - Google Patents
Co-extrusion mould head for extruding plastic material with longitudinal wood grains Download PDFInfo
- Publication number
- CN203567153U CN203567153U CN201320653330.1U CN201320653330U CN203567153U CN 203567153 U CN203567153 U CN 203567153U CN 201320653330 U CN201320653330 U CN 201320653330U CN 203567153 U CN203567153 U CN 203567153U
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- Prior art keywords
- extrusion
- runner
- fan
- flowing channel
- gathering sill
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Abstract
The utility model relates to a co-extrusion mould head for extruding a plastic material with longitudinal wood grains. The co-extrusion mould head comprises a co-extrusion performing plate, wherein the co-extrusion performing plate is provided with a co-extrusion flowing channel communicated with a middle cavity; the co-extrusion flowing channel comprises a main flowing channel, a shunt channel which is expanded from the two sides of a cavity co-extrusion surface, and a tiled flowing channel which leads to the cavity co-extrusion surface and a fan-shaped flowing channel which is communicated with the shunt channel and the tiled flowing channel; the fan-shaped flowing channel is internally provided with multiple guiding grooves the depths of which are greater than that of the fan-shaped flowing channel, the inlet ends of the guiding grooves are arranged in the shunt channel, and the outlet ends of the guiding grooves are arranged in the tiled flowing channel. The co-extrusion mould head provided by the utility model has the advantages that a plus material melt passes through the fan-shaped flowing channel, wood grain color master batch particles are capable of accumulating towards the guiding grooves, and form the clear longitudinal wood grains on the surface of a sectional material, and can imitate the grain shapes of the real wood grains by selecting the width, the depth, the interval and the inclined angle of the guiding grooves.
Description
Technical field
The utility model relates to a kind of outer co-extrusion die head of extrusion plastic section bar, specifically a kind of co-extrusion die head with slash grain plastic material of extruding.
Background technology
Common imitative wood grain profile adopts surface coating technology, and in film laminating profile, section bar cannot one-shot forming, conventionally adopts secondary overlay film, has not only increased corresponding equipment for coating film but also increased secondary processing cost.And the wood grain film of film laminating profile does not possess non-oxidizability, anti-ultraviolet effect, its life-span is shorter, easily comes off, variable color etc.
Also there is at present the outer co-extrusion one-shot forming mode of employing to produce imitative wood grain profile.Chinese invention patent ZL200710047766.5 discloses a kind of rigid PVC co-extrusion wood-like outdoor furniture section bar and preparation method thereof, and fabric is comprised of polyvinyl chloride resin base-material, wood grain Masterbatch and other auxiliary agent.Although this method can be produced imitative wood grain profile, the wood grain of section bar is disorderly and unsystematic and clear not, is difficult to form the shape of stripes of real logs.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art part, and a kind of co-extrusion die head with slash grain plastic material of extruding is provided, and section bar co-extrusion face can form longitudinal stripe clearly, can improve the fidelity of section bar.
For achieving the above object, the utility model has adopted following technical scheme: comprise co-extrusion preformed board, in co-extrusion preformed board, have the co-extruding flow channel communicating with intermediate cavity, described co-extruding flow channel comprises the fan-shaped runner of sprue, the runner to the expansion of die cavity co-extrusion face both sides, the tiling runner that leads to die cavity co-extrusion face and connection runner and tiling runner, in described fan-shaped runner, be provided with the gathering sill that several degree of depth are greater than fan-shaped runner, gathering sill arrival end is arranged in runner, and its port of export is arranged in tiling runner.When the fabric melt of plasticizing passes through fan-shaped runner, because gathering sill internal pressure is less than fan-shaped runner internal pressure, the wood grain Masterbatch that in melt, particle diameter is larger is easily built up in gathering sill, then during to recombination region, at Surface of profile, forms slash grain clearly through tiling runner.
Further, gathering sill is at least provided with a curved bend tune in fan-shaped runner.This curved bend tune is conducive to reduce the melt flow in gathering sill, is conducive to the accumulation of wood grain Masterbatch, can increase the sharpness of lines of slash grain.
Further, the groove width W of gathering sill is 2mm～6mm, and groove depth H is 0.8mm～2.0mm.The gathering sill of this width and the degree of depth can hold more wood grain Masterbatch particle, is conducive to melt flows in groove simultaneously.
Further, adjacent two gathering sill port of export spacing are 10mm～20mm.This interval can guarantee to there will not be between slash grain interference.
Preferably, the angle β between the runner center line of each gathering sill port of export and die cavity co-extrusion face is less than 90 °.The melt of the accumulation wood grain Masterbatch particle being flowed out by gathering sill enters tiling runner obliquely along section bar co-extrusion face width, can on Surface of profile, form the lines shape longitudinally with the bending of S shape.
Preferably, the angle β between the runner center line of the gathering sill port of export and die cavity co-extrusion face is 60 °～80 °.
As shown from the above technical solution, the utility model by arranging gathering sill in the fan-shaped runner of co-extruding flow channel, wood grain Masterbatch particle can be built up, thereby form slash grain clearly at Surface of profile, and by selective guide well width, the degree of depth, interval and angle of inclination, can imitate the lines shape of true wood grain.And structure is simple especially, be easy to processing.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is along A-A line cutaway view in Fig. 1;
Fig. 3 is along B-B line cutaway view in Fig. 2;
Fig. 4 be in Fig. 1 another embodiment along A-A line cutaway view.
The specific embodiment
As depicted in figs. 1 and 2, co-extrusion die head is comprised of parts such as machine neck 6, spreader supporting plate 5, core supporting plate 4, compressive plate 3, co-extrusion preformed board 2, mouth template 1 and cores 7, core 7 is arranged in the middle of core supporting plate 4, the co-extruding flow channel communicating with intermediate cavity 8 in co-extrusion preformed board 2 is comprised of sprue 22, runner 26, the fan-shaped runner 23 to the 81 both sides expansions of die cavity co-extrusion face and the runner 24 that tiles, runner 26 communicates with tiling runner 24 by fan-shaped runner 23, has the charging aperture 21 communicating with sprue 22 on co-extrusion preformed board 2 sidewalls.
In fan-shaped runner 23, be provided with the gathering sill 27 that several degree of depth are greater than fan-shaped runner, gathering sill 27 arrival ends are arranged in runner 26, and its port of export is arranged in tiling runner 24.
Gathering sill 27 is at least provided with a curved bend tune 271 in fan-shaped runner 26, to reduce the melt flow in gathering sill.In embodiment illustrated in fig. 2, the S-shaped shape of gathering sill 27, has the curved bend tune 271 that both direction is contrary.In embodiment illustrated in fig. 4, gathering sill 27 has a curved bend tune 271.
As shown in Figure 3, gathering sill 27 cross sections are circular arc, and groove width W is 2mm～6mm, and the bottom land extremely groove depth H between fan-shaped flow path wall 231 is 0.8mm～2.0mm.
Adjacent two gathering sill port of export spacing are 10mm～20mm.
Angle β between the runner center line 272 of gathering sill 27 ports of export and die cavity co-extrusion face 81 is less than 90 °, and angle β is preferably 60 °～80 °.
After bed material plastifies by extrusion main unit, the machine neck 6 that is entered co-extrusion die head by the direction of arrow of Fig. 1 is tentatively shunted, then enter current stabilization and compressional zone---supporting plate 4, compressive plate 3, while arriving co-extrusion preformed board 2 discharging opening, just fuse at recombination region 25 with fabric, finally by crossing the straight moulding of mouth template 1, just obtain extruded parisons.After fabric plastifies by co-extrusion machine, from the charging aperture 21 of co-extrusion preformed board 2, enter sprue 22, through runner 26, enter fan-shaped runner 23, the wood grain Masterbatch that in melt, particle diameter is larger is built up in gathering sill 27, through tiling runner 24, during to recombination region 25, at Surface of profile, form slash grain clearly again.
Claims (6)
1. extrude the co-extrusion die head with slash grain plastic material, comprise co-extrusion preformed board (2), in co-extrusion preformed board (2), have the co-extruding flow channel communicating with intermediate cavity (8), described co-extruding flow channel comprises sprue (22), to the runner (26) of die cavity co-extrusion face (81) both sides expansion, lead to the tiling runner (24) of die cavity co-extrusion face (81) and be communicated with runner (26) and the fan-shaped runner (23) of tiling runner (24), it is characterized in that: in described fan-shaped runner (23), be provided with the gathering sill (27) that several degree of depth are greater than fan-shaped runner, gathering sill (27) arrival end is arranged in runner (26), its port of export is arranged in tiling runner (24).
2. the co-extrusion die head with slash grain plastic material of extruding according to claim 1, is characterized in that: gathering sill (27) is at least provided with a curved bend tune (271) in fan-shaped runner (23).
3. the co-extrusion die head with slash grain plastic material of extruding according to claim 1, is characterized in that: the groove width W of gathering sill (27) is 2mm～6mm, groove depth H is 0.8mm～2.0mm.
4. the co-extrusion die head with slash grain plastic material of extruding according to claim 1, is characterized in that: adjacent two gathering sill port of export spacing are 10mm～20mm.
5. according to the co-extrusion die head with slash grain plastic material of extruding described in claim 1 or 2 or 3 or 4, it is characterized in that: the angle β between runner center line (272) and the die cavity co-extrusion face (81) of gathering sill (27) port of export is less than 90 °.
6. the co-extrusion die head with slash grain plastic material of extruding according to claim 5, is characterized in that: the angle β between runner center line (272) and the die cavity co-extrusion face (91) of gathering sill (27) port of export is 60 °～80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653330.1U CN203567153U (en) | 2013-10-22 | 2013-10-22 | Co-extrusion mould head for extruding plastic material with longitudinal wood grains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653330.1U CN203567153U (en) | 2013-10-22 | 2013-10-22 | Co-extrusion mould head for extruding plastic material with longitudinal wood grains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203567153U true CN203567153U (en) | 2014-04-30 |
Family
ID=50534909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320653330.1U Withdrawn - After Issue CN203567153U (en) | 2013-10-22 | 2013-10-22 | Co-extrusion mould head for extruding plastic material with longitudinal wood grains |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203567153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587095A (en) * | 2013-10-22 | 2014-02-19 | 铜陵格瑞特挤出技术有限公司 | Co-extruding die head for extruding plastic materials with longitudinal wood grains |
-
2013
- 2013-10-22 CN CN201320653330.1U patent/CN203567153U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587095A (en) * | 2013-10-22 | 2014-02-19 | 铜陵格瑞特挤出技术有限公司 | Co-extruding die head for extruding plastic materials with longitudinal wood grains |
| CN103587095B (en) * | 2013-10-22 | 2016-10-19 | 铜陵格瑞特挤出技术有限公司 | Extrusion has the co-extrusion die head of slash grain plastic material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140430 Effective date of abandoning: 20161012 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |