CN101670657B - Triple extrusion die head with low center - Google Patents
Triple extrusion die head with low center Download PDFInfo
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- CN101670657B CN101670657B CN2009102723216A CN200910272321A CN101670657B CN 101670657 B CN101670657 B CN 101670657B CN 2009102723216 A CN2009102723216 A CN 2009102723216A CN 200910272321 A CN200910272321 A CN 200910272321A CN 101670657 B CN101670657 B CN 101670657B
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- shunting body
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- shunting
- middle level
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Abstract
The invention discloses a triple extrusion die head with a low center, wherein, an inner layer feed inlet (12), a middle layer feed inlet (13) and an outer layer feed inlet (14) are positioned in a same plane and the center-height of which is H. The invention overcomes the defects that the runner of the existing triple extrusion die head has long length, the amount of polymer accumulated in the center of a die is large, the time needed for changing the resin or the color is long, and the cooling efficiency is low and the like. The distribution design of the invention reduces the height of the die head, shortens the length of the runner, improves the cooling efficiency, ensures more convenient operation of the film pulling, reduces the amount of polymer accumulated in the die head, and leads the changing of the material or the color more rapid.
Description
Technical field
The present invention relates to a kind of plastic sheeting manufacturing machine field, more particularly it is a kind of low center three-layer co-extrusion die.
Background technology
Existing triple extrusion die head feeding manner adopts the concentric-ring pattern core retainer plate to come stratified feeding mostly, and the center line of three layers of charging aperture has certain difference in height not on same level, and this just requires the extruder centre-height of each layer different.Such feeding manner has increased the length of each layer passage, and the storage of mold center's polymer is high, and the whole height of mould is higher.This can make the possibility that the die head interpolymer decomposes increase, change resin or color required time long, it is short from the center line relative distance of main traction that die head goes out die orifice, that is upper traction effective depth reduces, cooling effectiveness reduces, and extruder centre-height difference has increased again the manufacture difficulty of extruder.
Summary of the invention
The object of the invention is to overcome the weak point of above-mentioned existing background technology, and a kind of low center three-layer co-extrusion die is provided.
The objective of the invention is to reach by following measure: a kind of low center three-layer co-extrusion die, internal layer charging aperture, middle level charging aperture, the outer charging aperture that it is characterized in that it is positioned on the same plane that centre-height is, described internal layer charging aperture is successively by the passage in sealing shroud, passage on outer shunting body, the passage that leads on the internal layer conveyor screw that the passage that forms between connected body and right plug, the passage on the internal layer shunting body are joined together to form; Described middle level charging aperture is successively by the passage in sealing shroud, the passage that forms between outer shunting body and left plug, the passage that leads on the conveyor screw of middle level that the passage that forms between middle level shunting body and internal layer shunting body, the passage on connected body are joined together to form; Described outer charging aperture is served as reasons and is led to passage on outer conveyor screw on outer shunting body; Described middle level shunting body is between outer shunting body and internal layer shunting body, and outer shunting body is positioned at middle level shunting body below, and the internal layer shunting body is positioned at shunting body top, described middle level; Outer charging aperture, middle level charging aperture, internal layer charging aperture enter respectively the center of outer shunting body, middle level shunting body, internal layer shunting body by passage separately, and by the passage on the outside helical layer body of middle mind-set difference of outer shunting body, middle level shunting body, internal layer shunting body and the corridor diversion on the conveyor screw of middle level; Adopt alignment pin to position between internal layer shunting body and connected body; Described middle level shunting body, internal layer shunting body and connected body are connected with soket head cap screw between connected body by outer shunting body, and form shunting core.
In technique scheme, described internal layer shunting body adopts copper material.
In technique scheme, described sealing shroud is the copper material sealing shroud, and sealing shroud is arranged in charging hole on internal layer charging aperture, middle level charging aperture, outer charging aperture.
In technique scheme, described shunting core is located by pin and screw with the internal layer conveyor screw and is connected.
The present invention has following advantage: the charging aperture of triple extrusion die head is set directly on the internal layer conveyor screw of mould, is positioned at same plane.Adopt the shunting core of three layers of cylinder stepped ramp type, three passages independently separately are set in shunting core, each passage adopts central feeding, and the mode of center shunting is arranged on the internal layer conveyor screw with shunting core, completes charging, the shunting of triple extrusion die head; Three layers of charging aperture are set on the internal layer conveyor screw, and allow three layers of charging aperture be positioned at same plane, directly communicate with shunting core, the charging shunting is completed in die body.Shunting core of the present invention design has reduced the die head height, has shortened passage length, has improved cooling effectiveness, and it is more convenient that film is led in operation, reduced polymer storage in die head, reloads or to change color quicker; Every one deck of shunting core is all central feeding, center shunting simultaneously, makes each layered material flow point cloth and flow velocity more even, and bed thickness uniformity and film integral thickness degree improve.
Description of drawings
Fig. 1 is the structural representation of a kind of low center three-layer co-extrusion die of the present invention.
1. outer shunting bodies in figure, 2. middle level shunting body, 3. internal layer shunting body, 4. connected body, 5. right plug, 6. left plug, 7. internal layer conveyor screw, 8. sealing shroud, 9. outer conveyor screw, 10. middle level conveyor screw, 11. die head inflation inclined hole joint, 12. the internal layer charging aperture, 13. middle level charging apertures, 14. outer charging apertures.
The specific embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they are not construed as limiting the invention, only explanation for example.Simultaneously by illustrating that advantage of the present invention will become more clear and easily understand.
Consult accompanying drawing as can be known: a kind of low center three-layer co-extrusion die of the present invention, its internal layer charging aperture 12, middle level charging aperture 13, outer charging aperture 14 are positioned on the same plane that centre-height is H, described internal layer charging aperture 12 is successively by the passage in sealing shroud 8, passage on outer shunting body 1, the passage that forms between connected body 4 and right plug 5, the passage that leads on internal layer conveyor screw 7 that the passage on internal layer shunting body 3 is joined together to form; Described middle level charging aperture 13 is successively by the passage in sealing shroud 8, the passage that forms between outer shunting body 1 and left plug 6, the passage that forms between middle level shunting body 2 and internal layer shunting body 3, the passage that leads on middle level conveyor screw 10 that the passage on connected body 4 is joined together to form; Described outer charging aperture 14 is served as reasons and is led to passage on outer conveyor screw 9 on outer shunting body 1.
Internal layer shunting body 3 adopts copper material.
Sealing shroud 8 is the copper material sealing shroud, and sealing shroud 8 is arranged in charging hole on internal layer charging aperture 12, middle level charging aperture 13, outer charging aperture 14.
Adopt alignment pin to position between middle level shunting body 2, internal layer shunting body 3 and connected body 4.
Middle level shunting body 2, internal layer shunting body 3 and connected body 4 are connected with soket head cap screw between connected body 4 by outer shunting body 1, and form shunting core.
Shunting core is located by pin and screw with internal layer conveyor screw 7 and is connected.
A kind of low center three-layer co-extrusion die of the present invention, when material enters outer shunting body 1 by three layers of charging hole, material directly laterally enters the axle center of outer shunting body 1 by outer charging hole, and along the axle center to upper feeding, simultaneously after minute fluid space of material flow via the skimmer cone on middle level shunting body 2 and 1 formation of outer shunting body, the mind-set circumferencial direction is evenly shunted from die head, through entering outer conveyor screw 9 after equally distributed outer shunting inclined hole on internal layer conveyor screw 7; After material enters outer shunting body 1 by the middle level charging hole, when the certain distance of the axle center of the outer shunting body 1 of distance, just make progress along axial line, avoid outer tap hole, the axle center of leading to middle level shunting body 2, again along the axial line of middle level shunting body 2 to upper feeding, after minute fluid space that material flow forms via the central well of the spreader of internal layer shunting body 3 bottoms and middle level shunting body 2, the mind-set circumferencial direction is evenly shunted from die head, through entering middle level conveyor screw 10 after equally distributed middle level shunting inclined hole on association 4 and internal layer conveyor screw 7; Internal layer charging hole and middle level are similar, material just makes progress when the certain distance of the axle center of the outer shunting body 1 of distance, after avoiding the shunting inclined hole in outer and middle level, the axle center of leading to internal layer shunting body 3, and make progress along the axial line of internal layer shunting body 3, and shunt by the uniform shunting inclined hole that is connected with the die head center on internal layer conveyor screw 7, enter internal layer conveyor screw passage.
Internal layer shunting body 3, adopt alignment pin to locate between middle level shunting body 2 and connected body 4, and join together by the soket head cap screw between outer shunting body 1 and connected body 4, form shunting core, shunting core is located by pin and screw with internal layer conveyor screw 7 and is connected, and completes charging and shunting in die head.Internal layer shunting body 3 adopts copper material, and the ring surface that the up/down steps face of outer shunting body 1 contacts with internal layer conveyor screw 7 after grinding, can guarantee that the sealing of three step surfaces in shunting core upper, middle and lower is good.Each component part of shunting core is after turning machine-shaping, combine, be assembled into one with internal layer conveyor screw 7, reprocess the oblique tap hole of each layer to guarantee the joint precision of shunting inclined hole, take out again at last shunting core, process one by one each layer charging hole on shunting core.Outside in three layers of charging hole on helical layer body 9, the feeding seal cover 8 of being made by copper material is installed, when guaranteeing charging and the sealing of each several part.Die head is inflated inclined hole joint 11 by die head and is inflated.
The present invention is applied in the plastics extrusion blow molding membrane equipment.
Claims (3)
1. low center three-layer co-extrusion die, being centered close on highly identical same plane of internal layer charging aperture (12), middle level charging aperture (13) and outer charging aperture (14) that it is characterized in that it, described internal layer charging aperture (12) is successively by the passage in sealing shroud (8), passage on outer shunting body (1), the passage that forms between connected body (4) and right plug (5), the passage that leads on internal layer conveyor screw (7) that the passage on internal layer shunting body (3) is joined together to form; Described middle level charging aperture (13) is successively by the passage in sealing shroud (8), the passage that forms between outer shunting body (1) and left plug (6), the passage that forms between middle level shunting body (2) and internal layer shunting body (3), the passage that leads on middle level conveyor screw (10) that the passage on connected body (4) is joined together to form; Described outer charging aperture (14) is served as reasons and is led to passage on outer conveyor screw (9) on outer shunting body (1); Described middle level shunting body (2) is positioned between outer shunting body (1) and internal layer shunting body (3), and outer shunting body (1) is positioned at below middle level shunting body (2), and internal layer shunting body (3) is positioned at above described middle level shunting body (2); Outer charging aperture (14), middle level charging aperture (13), internal layer charging aperture (12) enter respectively the center of outer shunting body (1), middle level shunting body (2), internal layer shunting body (3) by passage separately, and by the passage on the center outside helical layer body of difference (9) of outer shunting body (1), middle level shunting body (2), internal layer shunting body (3) and the corridor diversion on middle level conveyor screw (10); Adopt alignment pin to position between internal layer shunting body (3) and connected body (4); Described middle level shunting body (2), internal layer shunting body (3) and connected body (4) are connected with soket head cap screw between connected body (4) by outer shunting body (1), and form shunting core.
2. a kind of low center three-layer co-extrusion die according to claim 1, is characterized in that described internal layer shunting body (3) adopts copper material.
3. a kind of low center three-layer co-extrusion die according to claim 1, it is characterized in that described sealing shroud (8) is the copper material sealing shroud, sealing shroud (8) is arranged in charging hole on internal layer charging aperture (12), middle level charging aperture (13) and outer charging aperture (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102723216A CN101670657B (en) | 2009-09-29 | 2009-09-29 | Triple extrusion die head with low center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102723216A CN101670657B (en) | 2009-09-29 | 2009-09-29 | Triple extrusion die head with low center |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101670657A CN101670657A (en) | 2010-03-17 |
| CN101670657B true CN101670657B (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102723216A Expired - Fee Related CN101670657B (en) | 2009-09-29 | 2009-09-29 | Triple extrusion die head with low center |
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| CN (1) | CN101670657B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364103A (en) * | 2017-08-25 | 2017-11-21 | 福建连众智惠实业有限公司 | One kind superposition sleeve coventry type die head coventry |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689432A (en) * | 2012-05-21 | 2012-09-26 | 瑞安市金达包装机械制造有限公司 | Multi-channel flow dividing rotating body for film blowing machine |
| CN105034569A (en) * | 2015-08-27 | 2015-11-11 | 安庆市兴丰工贸有限公司 | Improved film blowing, printing and rolling all-in-one machine |
| CN108454059B (en) * | 2018-04-04 | 2023-12-01 | 深圳市天博塑胶科技有限公司 | Co-extrusion device for preparing composite functional membrane |
| CN111590860A (en) * | 2020-06-11 | 2020-08-28 | 常州海菲尔机械有限公司 | 7-layer co-extrusion PVDC film blowing mold |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2393707Y (en) * | 1999-11-09 | 2000-08-30 | 周守志 | Multi-layer squeezing die |
| CN201544439U (en) * | 2009-09-29 | 2010-08-11 | 武汉新中德塑料机械有限公司 | Low-center three-layer co-extrusion die |
-
2009
- 2009-09-29 CN CN2009102723216A patent/CN101670657B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2393707Y (en) * | 1999-11-09 | 2000-08-30 | 周守志 | Multi-layer squeezing die |
| CN201544439U (en) * | 2009-09-29 | 2010-08-11 | 武汉新中德塑料机械有限公司 | Low-center three-layer co-extrusion die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364103A (en) * | 2017-08-25 | 2017-11-21 | 福建连众智惠实业有限公司 | One kind superposition sleeve coventry type die head coventry |
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| Publication number | Publication date |
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| CN101670657A (en) | 2010-03-17 |
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Granted publication date: 20130619 Termination date: 20180929 |