CN207758089U - Spiral lamination molding die and film blowing device - Google Patents
Spiral lamination molding die and film blowing device Download PDFInfo
- Publication number
- CN207758089U CN207758089U CN201721870677.6U CN201721870677U CN207758089U CN 207758089 U CN207758089 U CN 207758089U CN 201721870677 U CN201721870677 U CN 201721870677U CN 207758089 U CN207758089 U CN 207758089U
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- discharge port
- blowing device
- flow path
- wind deflector
- membrane tube
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Abstract
The utility model discloses a kind of spiral lamination molding die, including mouth mold and mold core, it is formed between mouth mold and mold core and squeezes out gap, the upper end for squeezing out gap connects discharge port, the lower end of mouth mold is equipped with the annular channel for importing and squeezing out in gap, the upper end of mouth mold is equipped with the helical flow path that spiral upwardly extends, and helical flow path imports discharge port.Helical flow path is equipped in the mouth mold of the utility model spiral lamination molding die, helical flow path spiral is upwardly extended and is imported into discharge port, the membrane tube squeezed out from discharge port in forming process has upwards relative to the material squeezed out in helical flow path and rotation two acts, therefore the material of helical flow path can mold spiral thread in membrane tube, be conducive to make the appearance of film more diversified, it can also be used to the making of anti false film.The utility model also correspondence provides a kind of film blowing device, which is equipped with wind deflector and forms cross-ventilation between wind deflector and membrane tube, accelerates the cooling velocity of membrane tube outer surface.
Description
Technical field
The utility model is related to film blow blowing technical fields more particularly to a kind of spiral lamination molding die to be set with film blow blowing
It is standby.
Background technology
Film blow blowing is to use a kind of technique of the continuously shaped plastic film of extrusion molding, blow moulding equipment used in the technique
Include extruder 11, blow molding machine head 12, collapser 13, several carry-over pinch rolls 14 and wind-up roll 15 as shown in fig. 1.By resin plus
Into extruder 11, the resin melting under internal screw rod transmission, shearing and heat effect, fused materials are conveyed into blow molding machine head 12
In, and continuously squeezed out in annular membrane tube 2 in homogeneous thickness, from blowing from the mould discharge door of circular ring shape by strainer, porous plate
Appropriate compressed air is blown into membrane tube 2 by 12 lower part of head makes its radial inflation.Membrane tube 2 is led after collapsing laminated by collapser 13
Draw upper rack carry-over pinch rolls 14 and clamp longitudinal drawing-off, is finally wound onto wind-up roll 15.
The membrane tube blown out from head is molded by the fused materials of high temperature, and temperature is higher, therefore need to be cooled down to membrane tube
Cooling prevents the drawing-in motion of rear end from being damaged to accelerate its molding.The cooling way generally used at present is to be blow molded
One circle of setting goes out vane around discharge port on head, is cooled down from blow out air in vane is gone out.However, at present this goes out
That part that the air of vane blowout is only capable of just having left membrane tube bottom head carries out short time cooling, then will scatter
Cooling effect is lost, it is bad to the cooling effect of membrane tube.
In addition, the mold currently used for multi-layer co-extruded film blow blowing is as shown in Figure 2, including mouth mold 122 and mold core 123,
In mouth mold 122 be equipped with multi-layer annular runner 124, these annular channels 124 arrange from the bottom to top and be imported into respectively mouth mold 122 with
It is finally multilayered structure from 126 extrusion molding of top discharge mouth in gap 125 is squeezed out in extrusion gap 125 between mold core 123
Film.Although the film that this mold is made has multilayered structure, spiral lamination pattern can not be made in membrane tube, it is such thin
Film cannot be used for anti-fake film production.
Therefore, to solve the above problems, it is necessary to provide a kind of molds that can be molded spiral lamination in membrane tube and right
Membrane tube cooling effect more preferably film blowing device.
Utility model content
The purpose of this utility model is to provide a kind of molds that spiral lamination can be molded in membrane tube.
Another purpose of the utility model is to provide a kind of to membrane tube cooling effect more preferably film blowing device.
To achieve the goals above, the utility model provides a kind of spiral lamination molding die, including mouth mold and mold core, mouth
It is formed between mould and mold core and squeezes out gap, squeeze out the upper end connection discharge port in gap, the lower end of mouth mold, which is equipped with to import, squeezes out seam
The upper end of annular channel in gap, mouth mold is equipped with the helical flow path that spiral upwardly extends, and helical flow path imports discharge port.
Compared with prior art, helical flow path, helical flow path are equipped in the mouth mold of the utility model spiral lamination molding die
Spiral is upwardly extended and is imported into discharge port, and the membrane tube squeezed out from discharge port in forming process is squeezed relative in helical flow path
The material gone out has upwards and rotation two acts, therefore the material of helical flow path can mold spiral lamination in membrane tube
Road is conducive to make the appearance of film more diversified, it can also be used to the making of anti false film.
Preferably, mouth mold is equipped with spaced several helical flow paths.
The utility model additionally provides a kind of film blowing device, including blow molding machine head, wind deflector and multiple lower air conduits, blows
Above-mentioned spiral lamination molding die, discharge port setting of multiple lower air conduits on blow molding machine head, wind deflector are equipped in molding machine head
On the outside of multiple lower air conduits, for the opening of lower air conduit towards discharge port inside, wind deflector is in inclined inclination outwardly from the bottom to top
Shape.
Compared with prior art, due to providing cooling sky in the utility model film blowing device provided with lower air conduit
Gas, the opening of lower air conduit is towards discharge port inside, therefore air can directly blow to membrane tube in membrane tube extrusion, compared to existing
Some, which goes out vane, can have more air to be in direct contact with membrane tube.The air of lower air conduit blowout takes away membrane tube after being contacted with membrane tube
Heat simultaneously climbs upwards, and simultaneously the cooler air within the scope of wind deflector can decline, and cold air encounters inclination during decline
Wind deflector guiding, can inwardly close to membrane tube simultaneously continue to take away heat.Between membrane tube and wind deflector the rising of hot-air with it is cold
The decline of air forms a convection circulation, can significantly improve cooling efficiency and reinforce cooling effect.
Preferably, wind deflector is arcuate structure, blow molding machine head is equipped with several wind deflectors, has between two adjacent wind deflectors
Interval.
Preferably, lower air conduit includes second of the first pipeline section being fixed on blow molding machine head and pivot joint on the first segment
Pipeline section, the opening of the second pipeline section is towards on the inside of discharge port.
Preferably, further include the upcast ventilation pipe positioned at wind deflector upper end, the upcast ventilation pipe vertically downwardly inside of wind deflector
Face.
Preferably, further include be located at blow molding machine head discharge port on the inside of straight tube and guide plate, the peripheral wall of straight tube penetratingly open
Equipped with ventilation opening, guide plate is arranged across ventilation opening in straight tube, and guide plate is in raised skewed from inside to outside.
Specifically, guide plate is swingable is adjustably connected in straight tube.
More specifically, guide plate is fixed with a pivotal axis, it is set in straight tube to pivot axis, being additionally provided in straight tube can incite somebody to action
The locked locking piece of pivotal axis.
Specifically, straight tube is equipped with multiple ventilation openings, is equipped with guide plate in each ventilation opening, several ventilation openings are along straight tube
Circumferentially-spaced arrangement.
Description of the drawings
Fig. 1 is film blowing device schematic diagram.
Fig. 2 is the structural schematic diagram of Multi-layer blown film mold in the prior art.
Fig. 3 is the structural schematic diagram of the utility model film blowing device.
Fig. 4 is the sectional view of mold in the utility model device.
Fig. 5 is the stereogram of mold in the utility model device.
Fig. 6 is the structural schematic diagram of the utility model film blowing device refrigerating device inside.
Specific implementation mode
Description is made to the preferred embodiment of the utility model with reference to the Figure of description provided.
As shown in figure 3, the utility model provides a kind of film blowing device, including blow molding machine head 3, spiral lamination shaping mould
Tool, wind deflector 5 and multiple lower air conduits 4, spiral lamination molding die are arranged in blow molding machine head 3 and form an annular in head top surface
Discharge port, when blowing is blown out from membrane tube 2 from discharge port.This film blowing device can form spiral thread in membrane tube 2,
And membrane tube 2 can be quickly cooled down.
Spiral lamination molding die includes mold core 31 as shown in Figure 4, Figure 5 and mouth mold 32, shape between mouth mold 32 and mold core 31
Gap 33 is squeezed out at having, the upper end for squeezing out gap 33 connects discharge port 34.The lower end of mouth mold 32 is equipped with to import and squeeze out in gap 33
Multi-layer annular runner 35, specifically, annular channel 35 has four layers in the present embodiment, therefore the membrane tube 2 after extrusion molding is four
Layer structure.32 peripheral wall of mouth mold is additionally provided with outside perforative feeding mouth 36, the pan feeding of each layer of annular channel 35 and respective heights
Mouth 36 is connected to, and extruder is connected to feeding mouth 36 to squeeze into material into mold.The upper end of mouth mold 32 is upwardly extended equipped with spiral
Helical flow path 37, the upper end of helical flow path 37 imports in discharge port 34, and helical flow path 37 is equally by entering on 32 peripheral wall of mouth mold
Material mouth 36 is fed.The material entered in extrusion gap 33 from the annular channel 35 of lower end is complex as a whole, and is reached discharge port 34 and is squeezed
Become multilayered structure when going out, lines will not be left in membrane tube 2.And take shape in the 2 opposed helical runner of membrane tube at discharge port 34
37 ends have upward movement and rotate the two movements, the two movement superpositions become helical trajectory, in conjunction with spiral
Runner 37 itself it is spiral-shaped, so that the material squeezed out in helical flow path 37 is formed spiral thread in membrane tube 2.Be conducive to
Keep the appearance of film more diversified, it can also be used to the making of anti false film.When only a spiral thread need to be molded in membrane tube 2,
The quantity of helical flow path 37 is one, when needing to be molded multiple spiral threads, is then arranged multiple by the upward spiral of same trend
The helical flow path 37 of extension is spaced from each other between these helical flow paths 37.
Fig. 3 is reviewed, multiple lower air conduits 4 are arranged to a circle around above-mentioned discharge port.Lower air conduit 4 includes being fixed on blow moulding machine
The first pipeline section 41 on first 3 and the second pipeline section 42 being articulated on first pipeline section 41, the first pipeline section 41 and the second pipeline section
42 be hollow structure, and the two is formed by axis pin to be pivotally connected and will carry out sealing in junction, opening on the second pipeline section 42
Mouth is towards discharge port inside, therefore the air that lower air conduit 4 is blown out during membrane tube 2 squeezes out being capable of direct opposite membrane tube 2.By
It is to be articulated on the first pipeline section 41, therefore the angle of the second pipeline section 42 can be adjusted as needed, and make in the second pipeline section 42
It is open towards the relatively low or higher position in membrane tube 2.
Wind deflector 5 is set to the outside of a circle lower air conduit 4, and wind deflector 5 is arc corresponding with discharge port in the present embodiment,
And wind deflector 5 is in inclined skewed outwardly from the bottom to top.Wind deflector 5 has several, for example is four, four in the present embodiment
Wind deflector 5 is arranged around discharge port, and interval is equipped between adjacent two wind deflectors 5, so that operator observes inside processing feelings
Condition.Wind deflector 5 can certainly be straight panel, but the shape of straight panel is not corresponding with membrane tube 2, thus effect not as good as arc panel it is good.
Wind deflector can be made to the annular around the whole circle of discharge port, in this case in order to seeing in another embodiment
Inner case makes wind deflector 5 using glass or transparent plastic, it is made to be transparent.
During membrane tube 2 squeezes out, the directly opposite membrane tube 2 of air blown out from lower air conduit 4, air is contacted with membrane tube 2
After take away its heat and as hot-air and close to membrane tube 2 rise.It is influenced by this ascending air, wind deflector 5 and 2 institute of membrane tube
The lower air of upper temp can decline automatically in the range of surrounding, the air of decline by the guiding of inclined wind deflector 5 and
It is biased inwardly towards membrane tube 2, cold air continues to take away heat and rise after contacting with membrane tube 2.The hot-air of rising and the cold sky of decline
Gas forms the convection current constantly recycled between wind deflector 5 and membrane tube 2, can rapidly take away the heat of membrane tube 2, improves cooling
Efficiency, and the convection current relatively it is existing go out vane act on the region bigger in membrane tube 2, cooling effect is more preferable.
Preferably, convection blown film cooling device further includes the upcast ventilation pipe 6 set on 5 upper end of wind deflector, upcast ventilation pipe 6 also has more
It is a and also around discharge port be arranged.The vertically downwardly medial surface of the wind deflector 5 of upcast ventilation pipe 6, blows out from upcast ventilation pipe 6
Cold air can further increase above-mentioned convection current.Blowing mechanism 12 is generally positioned in inside a guiding traction frame, therefore windward
Pipe 6 can be fixed in traction frame.
With reference to Fig. 6, this film blowing device further includes for showing that carrying out cooling inside cools down dress in membrane tube 2
It sets, refrigerating device inside includes straight tube 7 and guide plate 8, and straight tube 7 is located at the inside of discharge port, therefore straight tube 7 in blow-molding process
Positioned at the inside of membrane tube 2.The peripheral wall of straight tube 7 penetratingly offers ventilation opening 31, and guide plate 8 passes through 31 ground of ventilation opening to be arranged straight
On cylinder 7, and guide plate 8 is in raised skewed from inside to outside.
The quantity of the ventilation opening 71 being arranged in straight tube 7 and guide plate 8 has multiple, and one is provided in each ventilation opening 71
A guide plate 8.Circumferentially-spaced arrangement of several ventilation openings 71 on 7 sustained height of straight tube is a circle, and in the difference of straight tube 7
The ventilation opening 71 of several such arrangement lopping is respectively equipped on height and position, also, between two neighbouring circle ventilation openings 71
It is interlaced, the position of the ventilation opening 71 in a upper circle corresponds to the interval in next circle between two ventilation openings 71.Phase
Mutually arrangement staggeredly is the preferred mode used in the present embodiment, in other embodiments, neighbouring two circle ventilation openings 71
It can also face arrangement.Even, in the case where not considering cooling efficiency, only setting one encloses the mode of ventilation opening 71 also in we
Among the range of case, the ventilation opening 71 of this circle does not really want the strictly circumferential array around sustained height yet.
The air being blown upward in membrane tube 2 is arranged at blowing mechanism lower part, since guide plate 8 is to be obliquely installed, works as air
It will be flowed along the guiding of guide plate 8 when encountering guide plate 8 and by the blow vent in straight tube 7, air can directly blow to membrane tube 2
Inner surface, cooled down to inner surface.By multi-turn ventilation opening is equipped in 7 short transverse of straight tube in this present embodiment
71, that is, there is the guide plate 8 of multilayer, and interlaced between guide plate 8, therefore can also by the air of bottom guide plate 8
It is oriented to and the inner surface on 2 top of membrane tube is cooled down by the guide plate 8 on top, keep cooled region bigger, effect more preferable.
Preferably, straight tube 7 is mounted on using dismountable mode on blow molding machine head 3, the mode of installation such as can be in machine
Width groove corresponding with straight tube 7 is set on first 12, straight tube 7 is inserted into groove with positioning.Without to 2 inner surface of membrane tube into
When row cold-zone, operation is just carried out after can first removing straight tube 7.
When the 2 thickness difference of membrane tube that the mold that film blow blowing uses is different, produces, the temperature of 2 inner surface of membrane tube also can
Occur different, therefore be adjustably connected to guide plate 8 is swingable in straight tube 7, so that its angle is adjusted and change air with
The direction in 2 face of membrane tube adjusts cooling efficiency.Specifically, guide plate 8 and a pivotal axis 81 are fixed, pivotal axis 41 is rotationally set
In in straight tube 7, being additionally provided with the locking piece (not shown) that can lock pivotal axis 81 in straight tube 7, locking piece is bolt.When bolt is twisted
Pivotal axis is withstood and locks when tight, guide plate 8 cannot also be swung.When needing to adjust 8 angle of guide plate, first bolt is unscrewed
Pivotal axis 81 can be enabled to be freely rotated.
Compared with what is used in existing blow moulding equipment goes out vane, using in this membrane tube in the utility model film blowing device
Wind deflector 5 outside 2 recycles to form convection outside, can be quickly cooled down the outer surface of membrane tube 2, while using in membrane tube 2
The guide plate 8 in portion cools down the inner surface of membrane tube 2, realizes inside and outside synchronous cooling, greatly improves cooling velocity and cooling
Effect.It should be noted that both refrigerating device inside can be separately provided with external cooling device in this equipment, and there is no restriction
Centainly it is arranged simultaneously.
Above disclosed is only the preferred embodiments of the utility model, and effect is to facilitate those skilled in the art
Understand and implement according to this, the interest field of the utility model cannot be limited with this certainly, therefore special according to the present utility model application
Equivalent variations made by sharp range still fall within the range that the utility model is covered.
Claims (10)
1. a kind of spiral lamination molding die, including mouth mold and mold core are formed between the mouth mold and mold core and squeeze out gap, described
The upper end for squeezing out gap connects discharge port, and the lower end of the mouth mold, which is equipped with, imports the annular channel squeezed out in gap, special
Sign is：The upper end of the mouth mold is equipped with the helical flow path that spiral upwardly extends, and the helical flow path imports the discharge port.
2. spiral lamination molding die as described in claim 1, it is characterised in that：If the mouth mold is equipped with spaced
Do the helical flow path.
3. a kind of film blowing device, it is characterised in that：Including blow molding machine head, wind deflector and multiple lower air conduits, the blow moulding machine
Such as claim 1-2 any one of them spiral lamination molding dies are equipped in head, multiple lower air conduits surround the blow moulding machine
Discharge port setting on head, the wind deflector are set on the outside of multiple lower air conduits, and the opening of the lower air conduit is towards discharge port
Inside, the wind deflector is in inclined skewed outwardly from the bottom to top.
4. film blowing device as claimed in claim 3, it is characterised in that：The wind deflector is arcuate structure, the blowing
Head is equipped with several wind deflectors, has interval between adjacent two wind deflectors.
5. film blowing device as claimed in claim 3, it is characterised in that：The lower air conduit includes being fixed on blow molding machine head
The first pipeline section and the second pipeline section for being articulated on first pipeline section, the opening of second pipeline section is towards the discharge port
Inside.
6. film blowing device as claimed in claim 3, it is characterised in that：It further include the windward positioned at the wind deflector upper end
Pipe, the upcast ventilation pipe vertically downwardly medial surface of the wind deflector.
7. film blowing device as claimed in claim 3, it is characterised in that：Further include being located on the inside of blow molding machine head discharge port
The peripheral wall of straight tube and guide plate, the straight tube penetratingly offers ventilation opening, and the guide plate is arranged across the ventilation opening
In the straight tube, the guide plate is in raised skewed from inside to outside.
8. film blowing device as claimed in claim 7, it is characterised in that：The guide plate is swingable to be adjustably connected to institute
It states in straight tube.
9. film blowing device as claimed in claim 8, it is characterised in that：The guide plate is fixed with a pivotal axis, described
It is set in the straight tube to pivot axis, the locking piece that the pivotal axis can be locked is additionally provided in the straight tube.
10. film blowing device as claimed in claim 7, it is characterised in that：The straight tube is equipped with multiple ventilation openings,
The guide plate, circumferentially-spaced arrangement of several ventilation openings along the straight tube are equipped in each ventilation opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870677.6U CN207758089U (en) | 2017-12-26 | 2017-12-26 | Spiral lamination molding die and film blowing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870677.6U CN207758089U (en) | 2017-12-26 | 2017-12-26 | Spiral lamination molding die and film blowing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207758089U true CN207758089U (en) | 2018-08-24 |
Family
ID=63185156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721870677.6U Active CN207758089U (en) | 2017-12-26 | 2017-12-26 | Spiral lamination molding die and film blowing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207758089U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972252A (en) * | 2017-12-26 | 2018-05-01 | 东莞市正新包装制品有限公司 | Spiral lamination molding die and film blowing device |
| CN114228126A (en) * | 2021-11-29 | 2022-03-25 | 华南理工大学 | Multilayer overlapping heterodromous rotary blown film device |
-
2017
- 2017-12-26 CN CN201721870677.6U patent/CN207758089U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972252A (en) * | 2017-12-26 | 2018-05-01 | 东莞市正新包装制品有限公司 | Spiral lamination molding die and film blowing device |
| CN107972252B (en) * | 2017-12-26 | 2024-06-25 | 东莞市正新包装制品有限公司 | Spiral pattern forming die for blow molding equipment and film blow molding equipment |
| CN114228126A (en) * | 2021-11-29 | 2022-03-25 | 华南理工大学 | Multilayer overlapping heterodromous rotary blown film device |
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