CN2776664Y - Coextrusion flow path shaping mould plate having uniform pressure channel - Google Patents
Coextrusion flow path shaping mould plate having uniform pressure channel Download PDFInfo
- Publication number
- CN2776664Y CN2776664Y CNU2005200300801U CN200520030080U CN2776664Y CN 2776664 Y CN2776664 Y CN 2776664Y CN U2005200300801 U CNU2005200300801 U CN U2005200300801U CN 200520030080 U CN200520030080 U CN 200520030080U CN 2776664 Y CN2776664 Y CN 2776664Y
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- CN
- China
- Prior art keywords
- coextrusion
- mould plate
- uniform pressure
- flow paths
- clothes rack
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- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a coextrusion flow path shaping mould plate having uniform pressure channels. The mould plate is provided with two corresponding shaping mould plate main bodies, and clothes rack-shaped coextrusion flow paths are separately arranged on the mould plate main bodies. The two clothes rack-shaped coextrusion flow paths correspond. The uniform pressure channels are respectively arranged on mould plate coextrusion shaping sections between the clothes rack-shaped coextrusion flow paths on the two mould plate main bodies and a mould plate die cavity, and the two uniform pressure channels correspond. Materials extruded out of the coextrusion flow paths are buffered by the uniform pressure channels to cause the pressure drops of the coextrusion materials at every position on the coextrusion shaping sections are same. The materials at every position on the cross sections of the coextrusion flow paths flow to the die cavity in a constant speed way, and the thickness of coextrusion layers is uniform. The utility model basically solves the problem of the realization of the coextrusion of an ASA-PVC, a PVC-PVC, and a PMMA-PVC in a same set of moulds. The uniform pressure channels can accommodate the coextrusion of three kinds of materials, and simultaneously, the large numbers of repair for the flow paths can not require and the thickness of the coextrusion layers can be uniform. The utility model has the advantages that the cost is reduced, and the quality of the product is improved.
Description
Affiliated technical field
The utility model belongs to the improvement of plastic material extrusion die, relates generally to a kind of co-extruding flow channel forming panel that has balancing slit.
Background technology
At present, when utilizing mould to carry out section bar processing, in order to realize the co-extrusion of multiple multilayer dose on the surface of section bar, usually adopt co-extrusion technology, promptly the forming panel of mould ends is provided with clothes rack shape co-extruding flow channel 1 (as shown in Figure 1), and to disperse co-extrusion pressure, it is even to reach coextruded layer thickness.When carrying out sheet material, sheet material, profile shapes moulding, the co-extruding flow channel 1 of clothes rack shape has solved the uniform problem of extruding to a certain extent, but still there is flow velocity inequality in the cross section in the co-extrusion material on from co-extruding flow channel 1 to the coextrusion mold section 6 the forming panel die cavity 5, in the co-extrusion process, the amount of repairing a die of mould is bigger, influences the quality of product.Simultaneously, because material fluidity, the sensitiveness of co-extrusion are more intense, said structure can not carry out multiple flowability surface recombination co-extrusion material inequality on same set of mould.
Summary of the invention
The purpose of this utility model provides a kind of co-extruding flow channel forming panel that has balancing slit, and it can make the co-extruding flow channel material extrude evenly, thereby makes composite co-extruding section bar surface coextruded layer thickness even.
The purpose of this utility model can adopt following technical scheme to realize: have a template body, it is provided with the clothes rack shape co-extruding flow channel, on the coextrusion mold section between clothes rack shape co-extruding flow channel and the template die cavity balancing slit is set.
Described balancing slit is horizontally set on the coextrusion mold section.
By last structure as can be seen, because the template coextrusion mold section between co-extruding flow channel and the stencil-type sky is provided with a balancing slit, the material of extruding from co-extruding flow channel is by the buffering of balancing slit, make co-extrusion material each site pressure on profiled section fall identical, each position material constant speed flows to die cavity on the co-extruding flow channel cross section, makes coextruded layer thickness even.The utility model can be applied to multiple flowability surface recombination co-extrusion material inequality, solved ASA-PVC, PVC-PVC, PMMA-PVC realize co-extrusion at same set of mould a difficult problem, the compatible three kinds of material co-extrusions of this balancing slit, do not need simultaneously a large amount of finishing runners, just can make coextruded layer thickness even, reduce cost, improved product quality.
Description of drawings
Fig. 1 is existing forming template structure schematic diagram with co-extruding flow channel.
Fig. 2 is the utility model structural representation.
Fig. 3 is the A-A view of Fig. 2.
Shown in the figure: 1, clothes rack shape co-extruding flow channel, 2.1,2.2, the forming panel body, 3, balancing slit, 4, the co-extruding flow channel import, 5, the template die cavity, 6, template coextrusion mold section.
The specific embodiment
In conjunction with the accompanying drawings, specific embodiment of the utility model is described.
Shown in Fig. 2,3, described co-extruding flow channel forming panel is positioned at the end of extrusion die, comprise two relative co-extrusion template bodies 2.1,2.2, two formation of lots template bodies 2.1,2.2 are relative fixed when work, on two formation of lots template bodies 2.1,2.2, be respectively arranged with clothes rack shape co-extruding flow channel 1 and template die cavity 5, two clothes rack shape co-extruding flow channels 1 are relative, horizontally set one balancing slit 3 on the template coextrusion mold section 6 between clothes rack shape co-extruding flow channel 1 and the mold cavity 5.The two ends of balancing slit 3 are communicated with (or obstructed) with the two ends of co-extruding flow channel 1 respectively.Balancing slit 3 can be various ways such as square groove, semi-circular groove, and present embodiment adopts semi-circular groove.Said structure can make the co-extrusion material enter in the clothes rack shape co-extruding flow channel 1 from co-extruding flow channel import 4, by balancing slit 3 co-extrusion material each position constant speed on the coextrusion mold section is flowed, and thickness is even when making coextruded layer enter die cavity 5 on the template.
Claims (2)
1, a kind of co-extruding flow channel forming panel that has balancing slit, have two relative template bodies (2.1) (2.2), on two template bodies, be respectively arranged with clothes rack shape co-extruding flow channel (1), two clothes rack shape co-extruding flow channels (1) are relative, it is characterized in that: on clothes rack shape co-extruding flow channel (1) on two template bodies and the template coextrusion mold section (6) between the Die and mould plate die cavity (5) balancing slit (3) is set respectively, two balancing slits (3) are relative.
2, the co-extruding flow channel forming panel that has balancing slit according to claim 1 is characterized in that: described balancing slit (3) is gone up in template coextrusion mold section (6) and is horizontally set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200300801U CN2776664Y (en) | 2005-02-28 | 2005-02-28 | Coextrusion flow path shaping mould plate having uniform pressure channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200300801U CN2776664Y (en) | 2005-02-28 | 2005-02-28 | Coextrusion flow path shaping mould plate having uniform pressure channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2776664Y true CN2776664Y (en) | 2006-05-03 |
Family
ID=36744050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200300801U Expired - Fee Related CN2776664Y (en) | 2005-02-28 | 2005-02-28 | Coextrusion flow path shaping mould plate having uniform pressure channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2776664Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101169A (en) * | 2013-01-22 | 2013-05-15 | 张琪彬 | Process for producing building plastic formwork by co-extrusion method and compound mould |
| CN108407257A (en) * | 2018-04-26 | 2018-08-17 | 深圳市凯中泽华整流子有限公司 | A kind of petal mold and commutator extrusion moulding apparatus for extrusion molding commutator |
-
2005
- 2005-02-28 CN CNU2005200300801U patent/CN2776664Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101169A (en) * | 2013-01-22 | 2013-05-15 | 张琪彬 | Process for producing building plastic formwork by co-extrusion method and compound mould |
| CN103101169B (en) * | 2013-01-22 | 2016-02-24 | 张琪彬 | Coextruding method produces building plastic formwork technique and composite die |
| CN108407257A (en) * | 2018-04-26 | 2018-08-17 | 深圳市凯中泽华整流子有限公司 | A kind of petal mold and commutator extrusion moulding apparatus for extrusion molding commutator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060503 Termination date: 20140228 |