CN203592660U - Extrusion die with pressure balance type double-layer co-extrusion flow channel - Google Patents
Extrusion die with pressure balance type double-layer co-extrusion flow channel Download PDFInfo
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- CN203592660U CN203592660U CN201320817522.1U CN201320817522U CN203592660U CN 203592660 U CN203592660 U CN 203592660U CN 201320817522 U CN201320817522 U CN 201320817522U CN 203592660 U CN203592660 U CN 203592660U
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- flow channel
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Abstract
The utility model discloses an extrusion die with a pressure balance type double-layer co-extrusion flow channel. The extrusion die comprises a main flow channel (1), a transition plate (2), a first support plate (3), a second support plate (4), a compressed plate (5), a pre-forming plate (6) and a forming plate (7). The transition plate, the first support plate and the second support plate are provided with the horizontal-arranged co-extrusion flow channel (8). Independent sealed cavities (9) which are communicated with the co-extrusion flow channel are arranged outside the main flow channel at intervals in a surrounding mode. The co-extrusion flow channel passes through the compressed plate and the pre-forming plate in sequence and extends to the forming plate. Materials under two different production technology conditions pass through the main flow channel and the co-extrusion flow channel designed by a die head, reasonable pressure distribution is achieved, even discharging of two different kinds of PVC materials is achieved, the fact that the double-combination position is not separated after drop-hammer impact is guaranteed, meanwhile, two-visual-surface-co-extrusion-material flow speed is even and consistent, so that up-down co-extrusion color difference of a product is controlled in the national standard range, and the requirement for co-extrusion surface effect quality of a client is met.
Description
Technical field
The utility model relates to plastic profiled bar extrusion die, relates in particular to the extrusion die with isostasy type double-layer coextrusion runner of jointly extruding for two kinds of PVC materials.
Background technology
Building energy conservation is the pith in energy-conserving and environment-protective industry, and building energy conservation key is that door and window is energy-conservation, and plastic door-window is flourish as a kind of novel energy-saving environment-friendly industry.What common plastics door-window section bar adopted is take polyvinyl chloride resin as main material production, can produce the waste material of some in plastic irregular profile production process, and the operation such as blanking and corner cut of assembling in process at plastic door-window also can forming section waste material.After the processing of these production wastes is normally pulverized in the past, be filled in PVC raw material recycling or degradation and be processed into other plastic products.The former can affect surface color, mechanical performance and other quality index of goods; And the latter causes economic loss.The index of weighing Energy Saving Windows performance is embodied in the recycling of waste and old raw material, innovative design, the heat-insulation and heat-preservation of section bar etc. of section material section.By improving the structure of common plastics door-window section bar, adopt high-quality PVC material but not visible surface and interior muscle to adopt section bar visible surface and reclaim PVC material or lower-cost common PVC material, bi-material extrusion molding simultaneously, forms two-sided two co-extrusion door-window section bar of moulding.This just need to carry out technological innovation energetically to section bar extruding mould.Design and develop isostasy type double-layer coextrusion runner extremely urgent.Thereby being made full use of, downstream section bar enterprise reclaims waste material and the cost that saves material, the object that realize energy-conserving and environment-protective, turns waste into wealth.
Utility model content
The technical problems to be solved in the utility model is that existing section bar extruding mould can not be extruded bi-material simultaneously and forms two-sided two co-extrusion door-window section bar of moulding, can not make full use of non-visible surface and the interior muscle as plastic door-window section bar to the waste material producing in plastic irregular profile production process, a kind of mould with isostasy type double-layer coextrusion runner is provided for this reason.
The technical solution of the utility model is: the extrusion die with isostasy type double-layer coextrusion runner, it comprises sprue, rebound, the first supporting plate, the second supporting plate, compressive plate, preformed board and profiled sheeting, described rebound, the first supporting plate and the second supporting plate are provided with the co-extruding flow channel of laterally offering, described sprue is arranged at intervals with the independent sealing chamber being communicated with co-extruding flow channel outward, and described co-extruding flow channel extends to profiled sheeting through compressive plate and preformed board successively.
The improvement of such scheme is that the horizontal direction of described independent sealing chamber and die ontology is certain inclination angle.
The further improvement of such scheme is that the part that described co-extruding flow channel extends to the second supporting plate in the first supporting plate is provided with inclination angle and makes co-extruding flow channel shrink to increase the pressure of the co-extrusion material to process.
Further improving again of such scheme is that described co-extruding flow channel is the gradual change type runner radially shrinking gradually, and described sprue is the gradual change type runner radially shrinking gradually.
The beneficial effects of the utility model are high-quality PVC material to be sent into the independent sealing of co-extruding flow channel inflow chamber be finally shaped to section bar visible surface, common or recovery PVC material are sent into sprue and be shaped to the non-visible surface of section bar and interior muscle, bi-material extrusion molding simultaneously, form two-sided two co-extrusion door-window section bar of moulding, take full advantage of and reclaim waste material and the cost that saves material, the object that realize energy-conserving and environment-protective, turns waste into wealth, co-extruding flow channel and sprue are separated, co-extrusion material, by the gradual change type runner radially shrinking gradually, can produce certain co-extrusion pressure; Again by way of compressive plate, preformed board, profiled sheeting, co-extrusion gap area is more and more less therebetween, with common in sprue or reclaim PVC material in the time that profiled sheeting converges, produces larger extrusion pressure, guarantees junction close and firm; The horizontal direction of independent sealing chamber and die ontology is certain inclination angle in addition, the inclination angle that the part that co-extruding flow channel extends to the second supporting plate in the first supporting plate is provided with has further strengthened the extrusion pressure of material stream and has extruded flow velocity, guarantees to extrude qualified shape product.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram;
Fig. 2 is co-extruding flow channel charging schematic diagram;
Fig. 3 is the first supporting plate schematic diagram in Fig. 1;
Fig. 4 is the second supporting plate schematic diagram in Fig. 1;
Fig. 5 is rebound schematic diagram in Fig. 1;
Fig. 6 is that in Fig. 4, Q-Q face cuts open figure;
Fig. 7 is that in Fig. 5, T1-T1 face cuts open figure;
Fig. 8 is that in Fig. 3, G-G face cuts open figure;
Fig. 9 is that in Fig. 3, T-T face cuts open figure;
In figure, 1, sprue, 2, rebound, 3, the first supporting plate, 4, the second supporting plate, 5, compressive plate, 6, preformed board, 7, profiled sheeting, 8, co-extruding flow channel, 9, independent sealing chamber.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Fig. 1-Fig. 9, the utility model comprises sprue 1, rebound 2, the first supporting plate 3, the second supporting plate 4, compressive plate 5, preformed board 6 and profiled sheeting 7, rebound, the first supporting plate and the second supporting plate are provided with the co-extruding flow channel 8 of laterally offering, sprue is arranged at intervals with the independent sealing chamber 9 being communicated with co-extruding flow channel outward, and co-extruding flow channel extends to profiled sheeting through compressive plate and preformed board successively.
Sprue 1 is from the center of extruding by common PVC material or reclaim the melt that PVC material generates and enter mould primary cavity, is used for the non-visible surface part of extrusion profile; The melt that co-extruding flow channel 8 slave plate trailing flanks are generated by high-quality PVC material enters mould co-extruding flow channel, be used for the visual face portion of extrusion profile two, for pressure, the uniformity of upper and lower two co-extrusion visible surfaces are well controlled, upper and lower visible surface is designed to the independent sealing chamber being communicated with co-extruding flow channel, sealing chamber and sprue are spaced apart separately, and seal separately chamber and take to be with the horizontal direction of die ontology the design at certain inclination angle, this inclination angle is changeable to be decided according to mould inside space.
As shown in Figure 2, high-quality PVC material in co-extruding flow channel enters from the entrance of the first supporting plate and the second supporting plate trailing flank, cross-current is to the leading flank of the first supporting plate and the second supporting plate, at the leading flank place near the first supporting plate and the second supporting plate through a S type bend, this bend part extends on rebound, and the part of extending to the second supporting plate in the first supporting plate is provided with inclination angle and makes co-extruding flow channel shrink to increase the pressure of the co-extrusion material to process.
Preference of the present utility model is that co-extruding flow channel is the gradual change type runner radially shrinking gradually, can produce the pressure increasing gradually to the high-quality PVC material of process like this, sprue preferably also adopts this design, increase common PVC material or reclaim the pressure that PVC expects, shorten the time of staying of two kinds of PVC material at runner, material just can thickener, improves Surface of profile quality, has also improved operating efficiency.
Allow the material of two kinds of various processes conditions by sprue and the co-extruding flow channel of die design, realize rational pressure distribution, make these two kinds different PVC material dischargings even, after guaranteeing drop impact, extra quality junction does not separate, require two visible surface co-extrusion material flow velocity uniformities simultaneously, make poor being controlled within the scope of GB of the upper and lower co-extrusion complexion of goods, reach the co-extrusion face surface effect quality that client needs.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (5)
1. there is the extrusion die of isostasy type double-layer coextrusion runner, it comprises sprue (1), rebound (2), the first supporting plate (3), the second supporting plate (4), compressive plate (5), preformed board (6) and profiled sheeting (7), it is characterized in that described rebound, the first supporting plate and the second supporting plate are provided with the co-extruding flow channel (8) of laterally offering, described sprue is arranged at intervals with the independent sealing chamber (9) being communicated with co-extruding flow channel outward, and described co-extruding flow channel extends to profiled sheeting through compressive plate and preformed board successively.
2. the extrusion die with isostasy type double-layer coextrusion runner as claimed in claim 1, is characterized in that the horizontal direction of described independent sealing chamber and die ontology is certain inclination angle.
3. the extrusion die with isostasy type double-layer coextrusion runner as claimed in claim 2, is characterized in that described co-extruding flow channel is provided with inclination angle to the part of the second supporting plate extension and makes co-extruding flow channel shrink to increase the pressure of the co-extrusion material to process in the first supporting plate.
4. there is as claimed in claim 2 or claim 3 the extrusion die of isostasy type double-layer coextrusion runner, it is characterized in that described co-extruding flow channel is the gradual change type runner radially shrinking gradually.
5. there is as claimed in claim 2 or claim 3 the extrusion die of isostasy type double-layer coextrusion runner, it is characterized in that described sprue is the gradual change type runner radially shrinking gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320817522.1U CN203592660U (en) | 2013-12-13 | 2013-12-13 | Extrusion die with pressure balance type double-layer co-extrusion flow channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320817522.1U CN203592660U (en) | 2013-12-13 | 2013-12-13 | Extrusion die with pressure balance type double-layer co-extrusion flow channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203592660U true CN203592660U (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320817522.1U Withdrawn - After Issue CN203592660U (en) | 2013-12-13 | 2013-12-13 | Extrusion die with pressure balance type double-layer co-extrusion flow channel |
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| Country | Link |
|---|---|
| CN (1) | CN203592660U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692633A (en) * | 2013-12-13 | 2014-04-02 | 铜陵中发三佳科技股份有限公司 | Extrusion mold with pressure-balanced double-layer coextrusion flow channel |
-
2013
- 2013-12-13 CN CN201320817522.1U patent/CN203592660U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692633A (en) * | 2013-12-13 | 2014-04-02 | 铜陵中发三佳科技股份有限公司 | Extrusion mold with pressure-balanced double-layer coextrusion flow channel |
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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: 20140514 Effective date of abandoning: 20161005 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |