CN201544438U - Color composite co-extrusion mould for special-shaped section bars - Google Patents
Color composite co-extrusion mould for special-shaped section bars Download PDFInfo
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- CN201544438U CN201544438U CN2009202732259U CN200920273225U CN201544438U CN 201544438 U CN201544438 U CN 201544438U CN 2009202732259 U CN2009202732259 U CN 2009202732259U CN 200920273225 U CN200920273225 U CN 200920273225U CN 201544438 U CN201544438 U CN 201544438U
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Abstract
The utility model discloses a color composite co-extrusion mould for special-shaped section bars. Head flow channels of the co-extrusion mould comprise a co-extrusion flow channel and a primary flow channel, wherein the co-extrusion flow channel is provided with a co-extrusion flow channel feeding cylindrical cavity, a co-extrusion flow channel feeding face (3) and a product shaping face (4). The color composite co-extrusion mould for the special-shaped section bars is characterized in that a co-extrusion flow channel feeding cylindrical axis (1) on the co-extrusion flow channel feeding cylindrical cavity is coincident with the center (2) of a product die cavity. The color composite co-extrusion mould for the special-shaped section bars adopts the technical solution, therefore the structures of the flow channels uniform feeding, flow stable and product shaping fast. The color composite co-extrusion mould for the special-shaped section bars avoids overflow phenomena of co-extrusion material flow among templates, increases production stability of the color composite co-extrusion mould, and reduces production cost of the color composite co-extrusion section bars.
Description
Technical field
The utility model belongs to the technical field of plastic extruding forming mould, relates to a kind of special-shaped profile color composite co-extruding mould.More particularly, relate to a kind of PMMA co-extruding mould runner.
Background technology
The flow channel of special-shaped profile color composite co-extruding mould is divided into co-extruding flow channel and sprue two parts, and they were separate before crossing.
At present, the form of co-extruding flow channel mainly contains two kinds of rack-style runner, labyrinth paths.They respectively have its characteristics.Wherein the rack-style runner is more directly perceived, and is also very simple, constitutes rational materials flow easily, but the crossing to be sealed in certain degree of difficulty is arranged in the processing of it and sprue, and occur composite bed wall unevenness problem easily and cusp occurs in the part thickening phenomenon.Shown in Figure 1 as in this specification, its reason is: shunting inequality in die head composite stream road causes.
Shown in Figure 2 as in this specification, it is because the die head sprue causes with composite stream road flow and pressure ratio distribution inequality that the inhomogeneous and cusp of thickness thickens.
Summary of the invention
Problem to be solved in the utility model provides a kind of special-shaped profile color composite co-extruding mould, its objective is to solve rack-style runner and sprue the cross difficulty of processing and the composite bed wall unevenness that seal and cusp occurs in the part and thicken problems such as phenomenon.
To achieve these goals, the technical scheme taked of the utility model is:
Special-shaped profile color composite co-extruding mould provided by the utility model, the flow channel of described co-extruding mould comprises co-extruding flow channel and sprue, described co-extruding flow channel is established co-extruding flow channel feed cylindrical cavity, co-extruding flow channel feed plane and formed product face, and co-extruding flow channel feed cylinder axial line and product die cavity central point on the described co-extruding flow channel feed cylindrical cavity coincide.
Co-extruding flow channel feed plane in the described co-extruding flow channel and the angle between the formed product face are 10 °～15 °.
Described co-extruding flow channel is provided with two formation of lots plates, establishes coextruding die interblock supercharging groove between two described profiled sheetings.
The gap of described coextruding die interblock supercharging groove is 0.2mm.
On the described profiled sheeting, with the distance of formed product face be that 4～6mm place establishes semicircle steady flow segment 5.
More particularly, the diameter of described semicircle steady flow segment is 4mm; Described semicircle steady flow segment is 5mm apart from the distance of formed product face.
The utility model adopts technique scheme, the structure of its runner to make uniform feeding, and materials flow is stable, formed product is fast, can there be co-extrusion materials flow spillover between template, have improved color coextrusion mould production stability, reduce the production cost of color coextrusion section bar.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are briefly explained:
Fig. 1 causes composite bed wall unevenness problem for the described die head materials flow of this specification background technology road shunting is uneven and occurs the schematic diagram that cusp thickens in the part;
Fig. 2 is for the described die head sprue of this specification background technology and composite stream road flow and pressure ratio distributes inequality to cause composite bed wall unevenness problem and the schematic diagram that cusp thickens occurs in the part;
Fig. 3 is profiled sheeting 1 structural representation of the present utility model.
Be labeled as among the figure:
1, co-extruding flow channel feed cylinder axial line, 2, product die cavity central point, 3, the co-extruding flow channel feed plane, 4, formed product face (being inlet), 5, semicircle steady flow segment, 6, coextruding die interblock supercharging groove, 7, profiled sheeting, 8, profiled sheeting.
The specific embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and operation principle, the manufacturing process of the mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.
The of the present utility model structure expressed as Fig. 3, be a kind of special-shaped profile color composite co-extruding mould, the flow channel of described co-extruding mould comprises co-extruding flow channel and sprue, described co-extruding flow channel establish co-extruding flow channel feed cylindrical cavity and on relevant design element positions such as co-extruding flow channel feed cylinder axial line 1, product die cavity central point 2, co-extruding flow channel feed plane 3 and formed product face 4 (being inlet), semicircle steady flow segment 5, coextruding die interblock supercharging groove 6 improve design and form.
In order to realize goal of the invention of the present utility model, the concrete technical scheme below having adopted:
As shown in Figure 3, special-shaped profile color composite co-extruding mould provided by the utility model, the co-extruding flow channel feed cylinder axial line 1 on the described co-extruding flow channel feed cylindrical cavity coincides with product die cavity central point 2.
Feed cylinder axle center line products die cavity central point coincides, and guarantees the color coextrusion colorant in feeder process, and even to the pressure of feed plane, it is bigger to stop co-extruding mould feed mid portion wall thickness, and the corner part is under feeding or do not have the phenomenon of feed to take place.
Adopt technique scheme, the structure of its runner to make uniform feeding, materials flow is stable, and formed product is fast, can not have co-extrusion materials flow spillover between template, has improved color coextrusion mould production stability, reduces the production cost of color coextrusion section bar.
Co-extruding flow channel feed plane 3 in the above-described co-extruding flow channel and the angle between the formed product face 4 are 10 °～15 °.
Co-extruding flow channel feed plane 3 is 10 °～15 ° with formed product face 4 corresponding angles, improves stability in the colored colorant feeder process, reduces the internal stress in the colored colorant forming process.Co-extruding flow channel feed plane 3 is precondition sections of semicircle steady flow segment 5 structures, for owing to shrink the uneven crack performance that produces the excellent prevention effect being arranged in the PMMA color coextrusion profile shapes forming process.
As shown in Figure 3, co-extruding flow channel described in the utility model is provided with between profiled sheeting 7, profiled sheeting 8, two formation of lots plates 7, the profiled sheeting 8 and establishes coextruding die interblock supercharging groove 6.
The co-extruding flow channel part is made up of profiled sheeting 7 and profiled sheeting 8, profiled sheeting 7 and 8 of profiled sheetings in the co-extrusion template are set up the supercharging groove, mainly be in order to reduce the contact area in the production process between two templates, when the colored colorant that flows passed through template, the pressure between template prevented that enough the co-extrusion colorant from overflowing.
Prove that by experiment the gap optimum value of above-described coextruding die interblock supercharging groove 6 is 0.2mm.
As shown in Figure 3, on profiled sheeting 7 described in the utility model, with formed product face 4 distance be that 4～6mm place establishes semicircle steady flow segment 5.
Profiled sheeting 1 is established semicircle steady flow segment 5 apart from inlet 4mm～6mm place, composite bed wall unevenness problem appears in colour-profile composite co-extruding mould easily and the technological means that cusp thickens phenomenon occurs in the part for the utility model mainly solves, and it has played the stable effect of materials flow of labyrinth path structure.But compare with the labyrinth path structure, reduced the pressure loss of co-extrusion materials flow, reduce in the production process requirement simultaneously, save the power consumption of co-extrusion equipment, reduce production costs co-extrusion equipment.
Above-described semicircle steady flow segment 5 can be 4mm with the distance of inlet, or 5mm, or 6mm, is optimum value according to experiment showed, with 5mm.
The diameter of above-described semicircle steady flow segment 5 is 4mm, obtains effect preferably.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (6)
1. special-shaped profile color composite co-extruding mould, the flow channel of described co-extruding mould comprises co-extruding flow channel and sprue, described co-extruding flow channel is established co-extruding flow channel feed cylindrical cavity, co-extruding flow channel feed plane (3) and formed product face (4), it is characterized in that: the co-extruding flow channel feed cylinder axial line (1) on the described co-extruding flow channel feed cylindrical cavity coincides with product die cavity central point (2).
2. according to the described special-shaped profile color composite co-extruding mould of claim 1, it is characterized in that: co-extruding flow channel feed plane (3) and the angle between the formed product face (4) in the described co-extruding flow channel are 10 °～15 °.
3. according to claim 1 or 2 described special-shaped profile color composite co-extruding moulds, it is characterized in that: described co-extruding flow channel is provided with two formation of lots plates (7,8), establishes coextruding die interblock supercharging groove (6) between two described profiled sheetings (7,8).
4. according to the described special-shaped profile color composite co-extruding mould of claim 3, it is characterized in that: the gap of described coextruding die interblock supercharging groove (6) is 0.2mm.
5. according to claim 1 or 2 or 4 described special-shaped profile color composite co-extruding moulds, it is characterized in that: on the described profiled sheeting (7), with the distance of formed product face (4) be that 4～6mm place establishes semicircle steady flow segment (5).
6. according to the described special-shaped profile color composite co-extruding mould of claim 5, it is characterized in that: the diameter of described semicircle steady flow segment (5) is 4mm; Described semicircle steady flow segment (5) is 5mm apart from the distance of formed product face (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202732259U CN201544438U (en) | 2009-12-08 | 2009-12-08 | Color composite co-extrusion mould for special-shaped section bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202732259U CN201544438U (en) | 2009-12-08 | 2009-12-08 | Color composite co-extrusion mould for special-shaped section bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201544438U true CN201544438U (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202732259U Expired - Fee Related CN201544438U (en) | 2009-12-08 | 2009-12-08 | Color composite co-extrusion mould for special-shaped section bars |
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| Country | Link |
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| CN (1) | CN201544438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001173A (en) * | 2010-12-02 | 2011-04-06 | 铜陵三佳科技股份有限公司 | Co-extrusion die head for extruding profiled bars with co-extrusion surface |
-
2009
- 2009-12-08 CN CN2009202732259U patent/CN201544438U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001173A (en) * | 2010-12-02 | 2011-04-06 | 铜陵三佳科技股份有限公司 | Co-extrusion die head for extruding profiled bars with co-extrusion surface |
| CN102001173B (en) * | 2010-12-02 | 2013-06-05 | 铜陵三佳科技股份有限公司 | Co-extrusion die head for extruding profiled bars with co-extrusion surface |
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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: 20100811 Termination date: 20131208 |