CN201552737U - Three-layer co-extrusion internal cooling die head - Google Patents
Three-layer co-extrusion internal cooling die head Download PDFInfo
- Publication number
- CN201552737U CN201552737U CN2009202286953U CN200920228695U CN201552737U CN 201552737 U CN201552737 U CN 201552737U CN 2009202286953 U CN2009202286953 U CN 2009202286953U CN 200920228695 U CN200920228695 U CN 200920228695U CN 201552737 U CN201552737 U CN 201552737U
- Authority
- CN
- China
- Prior art keywords
- die head
- air
- layer
- flow channel
- melt flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Disclosed is a three-layer co-extrusion internal cooling die head which comprises an air chamber (11) arranged at the bottom end, and a feed port (12) and an air ring (9) which are fixed on the air chamber (11). The die head is characterized in that an air inlet pipe (2) and an air outlet pipe (1) are evenly distributed at intervals above the feed port (12), the air inlet pipe (2) passes through a ventilation hole (3) on a double-ring type inner air filtering ring (4)and enters film bubbles, the air outlet pipe (1) is communicated with an outer air filtering ring (5) via a main air pipe (8) of the center of the die head, and a melt passage below the air ring (9) adopts an internal contraction structure with three passage layers. The die head resolves the problem of uniformity of thickness of a conventional three-layer co-extrusion internal die head, has reasonable arrangement of inlet and outlet air flues, renovates arrangement design with the three-layer melt passage design, and guarantees uniformities of melt and internal cooling air flow.
Description
Technical field
The utility model relates to cold blowing in a kind of film bubble and moulds a device on the film line, more particularly it be a kind of three-layer co-extruded in cold die head.
Background technology
1., channel diameter is little existing triple extrusion die head mostly is the concentric-ring pattern structure greatly, is not with interior device for cooling, even interior device for cooling is arranged, the inner cooling path of its distribution structurally has following characteristics:, cold and hot wind flow is little; Number of channels is few, and cold and hot wind is inhomogeneous, easily causes the interior cooling effect of film bubble poor.2., spiral mostly is single helical pitch design in the parameter setting in every laminar flow road and runner design, and is unreasonable, causes film gauge variation big, directly influences the quality of film article.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned existing disadvantages of background technology part, and a kind of three-layer co-extruded interior cold die head is provided.It has solved the thickness uniformity problem of three-layer co-extruded interior cold die head.Passing in and out reasonable Arrangement on the air channel, the existing layout design of renewal on three layers of melt flow channel design, it is even that all even interior cold wind of assurance melt flows.
The purpose of this utility model reaches by following measure: cold die head in three-layer co-extruded, it comprises the air compartment that is positioned at the bottom, is fixed on charging aperture, vane on the air compartment, it is characterized in that: evenly blast pipe and discharge pipe spaced apart arranged above charging aperture, blast pipe enters in the film bubble by the air vent on the interior filter vane of dicyclo type, discharge pipe through the air main at die head center with outside the filter vane communicate, the melt flow channel that is positioned at the vane below adopts the contraction type structure in three laminar flow roads.
In technique scheme, described blast pipe and discharge pipe all have four, and evenly distributed on circumference.
In technique scheme, described three layers of melt flow channel comprise outer melt flow channel, middle level melt flow channel and internal layer melt flow channel, described outer melt flow channel, middle level melt flow channel and internal layer melt flow channel all adopt two helical pitch helical structures, first helical pitch distance is greater than the second helical pitch distance, and lead angle from large to small.
In technique scheme, described discharge pipe communicates with the angle that the air main at die head center presents greater than 120 °.
In technique scheme, described blast pipe communicates with the angle that the air main at die head center presents greater than 120 °, and evenly is spaced with discharge pipe.
The three-layer co-extruded interior cold die head of the utility model adopts the two helical pitches of helicla flute, the interior type of pressure charging partially of runner obviously to improve, thereby the distributing homogeneity on every side of melt improves the thickness uniformity, thereby improves film thickness degree.
Description of drawings
Fig. 1 is the three-layer co-extruded interior cold die head schematic diagram of the utility model.
Fig. 2 is that the two helical pitches of three-layer co-extruded interior cold die head helical flow path are launched schematic diagram.
1. discharge pipes among the figure, 2. blast pipe, 3. air vent, 4. in the filter vane, 5. outer filter vane, 6. middle level melt flow channel, 7. outer melt flow channel, 8. air main, 9. vane, 10. internal layer melt flow channel, 11. air compartment, 12. charging apertures, the L1. first helical pitch distance, the L2. second helical pitch distance.
The specific embodiment
Describe performance of the present utility model in detail below in conjunction with accompanying drawing, but they do not constitute to qualification of the present utility model, only do for example.Simultaneously by illustrating that advantage of the present utility model will become clear more and understanding easily.
Consult accompanying drawing as can be known: cold die head in the utility model is three-layer co-extruded, it comprises the air compartment 11 that is positioned at the bottom, is fixed on charging aperture 12, vane 9 on the air compartment 11, it is characterized in that: evenly blast pipe 2 and discharge pipe 1 spaced apart arranged above charging aperture 12, blast pipe 2 enters in the film bubble by the air vent 3 on the interior filter vane 4 of dicyclo type, discharge pipe 1 through the air main 8 at die head center with outside filter vane 5 communicate, the melt flow channel that is positioned at vane 9 belows adopts the contraction type structure in three laminar flow roads.Blast pipe 2 and discharge pipe 1 all have four, and evenly distributed on circumference.Three layers of melt flow channel comprise outer melt flow channel 7, middle level melt flow channel 6 and internal layer melt flow channel 10, described outer melt flow channel 7, middle level melt flow channel 6 and internal layer melt flow channel 10 all adopt two helical pitch helical structures, first helical pitch distance is greater than the second helical pitch distance, and lead angle from large to small.Discharge pipe 1 communicates with the angle that the air main 8 at die head center presents greater than 120 °.Blast pipe 2 communicates with the angle that the air main 8 at die head center presents greater than 120 °, and evenly is spaced (as shown in Figure 1 and Figure 2) with discharge pipe 1.
In the spiral fluted design, adopt two helical pitch helical structures.First helical pitch distance is L1, second helical pitch distance is L2, the value of L2 is little than L1, and to reduce screw channel bottom flow process from large to small the longest for lead angle herein, the axial flow velocity of the part melt that temperature is the highest, increase melt circumferencial direction flow tendency and flow velocity, further strengthened the uniformity of the temperature flow velocity that melt along the circumferential direction distributes, forward in the flow process, its axial flow velocity is more even at melt, control to film thickness is more favourable, thereby improves film thickness degree (as shown in Figure 2).
Claims (5)
1. cold die head in three-layer co-extruded, it comprises the air compartment (11) that is positioned at the bottom, is fixed on charging aperture (12), vane (9) on the air compartment (11), it is characterized in that: evenly blast pipe (2) and discharge pipe (1) spaced apart arranged in charging aperture (12) top, blast pipe (2) enters in the film bubble by the air vent (3) on the interior filter vane (4) of dicyclo type, discharge pipe (1) through the air main (8) at die head center with outside filter vane (5) communicate, the melt flow channel that is positioned at vane (9) below adopts the contraction type structure in three laminar flow roads.
2. three-layer co-extruded interior cold die head according to claim 1, it is characterized in that: blast pipe (2) and discharge pipe (1) all have four, and evenly distributed on circumference.
3. three-layer co-extruded interior cold die head according to claim 1, it is characterized in that: three layers of melt flow channel comprise outer melt flow channel (7), middle level melt flow channel (6) and internal layer melt flow channel (10), described outer melt flow channel (7), middle level melt flow channel (6) and internal layer melt flow channel (10) all adopt two helical pitch helical structures, first helical pitch distance (L1) is greater than second helical pitch distance (L2), and lead angle from large to small.
4. three-layer co-extruded interior cold die head according to claim 2, it is characterized in that: discharge pipe (1) communicates with the angle that the air main (8) at die head center presents greater than 120 °.
5. three-layer co-extruded interior cold die head according to claim 2, it is characterized in that: blast pipe (2) communicates with the angle that the air main (8) at die head center presents greater than 120 °, and evenly is spaced with discharge pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202286953U CN201552737U (en) | 2009-09-29 | 2009-09-29 | Three-layer co-extrusion internal cooling die head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202286953U CN201552737U (en) | 2009-09-29 | 2009-09-29 | Three-layer co-extrusion internal cooling die head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201552737U true CN201552737U (en) | 2010-08-18 |
Family
ID=42612412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202286953U Expired - Fee Related CN201552737U (en) | 2009-09-29 | 2009-09-29 | Three-layer co-extrusion internal cooling die head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201552737U (en) |
Cited By (2)
| 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 |
| CN105058766A (en) * | 2015-07-28 | 2015-11-18 | 武汉新中德塑机股份有限公司 | Combined three-layer co-extrusion inner cold mold head |
-
2009
- 2009-09-29 CN CN2009202286953U patent/CN201552737U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN105058766A (en) * | 2015-07-28 | 2015-11-18 | 武汉新中德塑机股份有限公司 | Combined three-layer co-extrusion inner cold mold head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102089138A (en) | Multiscrew extruder device for the production of elastomeric compounds | |
| CN201552737U (en) | Three-layer co-extrusion internal cooling die head | |
| CN103776251A (en) | Hot wind distributor | |
| CN209350846U (en) | Plastic film capicitor device cooling system | |
| CN209158894U (en) | A kind of multilayer extrusion die head | |
| CN109531956A (en) | Plastic film capicitor device cooling system | |
| CN101927339B (en) | Cooling joint for casting mold | |
| CN104724705A (en) | Chassis assembly for polycrystalline silicon reduction furnace | |
| CN107300086A (en) | A kind of equal flow tube of inner guide type and its application | |
| CN106346742A (en) | High-precision large-diameter pipe extruder head and use method thereof | |
| CN103862666B (en) | Improve the film-blowing die head of the horizontal film thickness uniformity of product | |
| CN102765178A (en) | Composite plastic pipe forming die | |
| CN209176140U (en) | The three-layer co-extruded spiral mould of PE tubing | |
| CN204529325U (en) | For the chassis assembly of polycrystalline silicon reducing furnace | |
| CN100455427C (en) | Multi-layer blown film molding machine and method of molding multi-layer blown film | |
| CN103358525A (en) | Polyolefin pipe spiral die | |
| CN201791953U (en) | Cooling connector for casting mold | |
| CN209832561U (en) | Vacuum sizing mill | |
| CN109291394A (en) | The three-layer co-extruded spiral mould of PE tubing and its charging distribution method | |
| CN202753434U (en) | Manual adjustable air ring | |
| CN211843119U (en) | Double-wall corrugated pipe extruder head | |
| CN221315130U (en) | Double-layer wind ring | |
| CN104441602A (en) | Blow molding air ring structure of plastic film | |
| CN202241741U (en) | Cooling jacket of double-wall corrugated pipe | |
| CN204529322U (en) | For the chassis assembly of polycrystalline silicon reducing furnace |
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: 20100818 Termination date: 20130929 |