CN110453295A - A kind of melt-spraying spinning nozzle structure - Google Patents
A kind of melt-spraying spinning nozzle structure Download PDFInfo
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- CN110453295A CN110453295A CN201910886133.6A CN201910886133A CN110453295A CN 110453295 A CN110453295 A CN 110453295A CN 201910886133 A CN201910886133 A CN 201910886133A CN 110453295 A CN110453295 A CN 110453295A
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- melt
- fumarole
- spinneret orifice
- nozzle
- air
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- 238000009987 spinning Methods 0.000 title claims abstract description 73
- 238000005507 spraying Methods 0.000 title claims abstract description 71
- 230000003139 buffering effect Effects 0.000 claims abstract description 46
- 238000012546 transfer Methods 0.000 claims abstract description 35
- 239000011159 matrix material Substances 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 abstract description 36
- 238000013461 design Methods 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 17
- 239000004750 melt-blown nonwoven Substances 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000004753 textile Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000000872 buffer Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
- D01D4/025—Melt-blowing or solution-blowing dies
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
Abstract
The invention discloses a kind of melt-spraying spinning nozzle structure, it is related to being meltblown textile technology field.Melt-spraying spinning nozzle structure provided by the invention includes conveying mould group and Nozzle At The Ingot Mold group, and conveying mould group includes the first matrix, melt conveying channel and the air-flow transfer passage for being symmetrically set in melt conveying channel two sides；Nozzle At The Ingot Mold group is connected to the lower end of conveying mould group, Nozzle At The Ingot Mold group includes the second matrix, spinneret orifice and the buffering air cavity and fumarole that are symmetrically set in spinneret orifice two sides, buffering air cavity side lower end is connected to the air inlet of fumarole, and fumarole is obliquely installed with respect to spinneret orifice in predetermined angle.Melt-spraying spinning spray head designs are innovatively two part of conveying mould group and Nozzle At The Ingot Mold group by the present invention, pass through conveying mould group and Nozzle At The Ingot Mold group junction design buffering air cavity, it is sufficiently buffered so that air-flow is conveyed into during fumarole from air-flow transfer passage, it improves fumarole and sprays airflow stability, melt-blown non-woven material unstable quality phenomenon caused by avoiding air-flow unstable.
Description
Technical field
The present invention relates to melt-blown textile technology field, in particular to a kind of melt-spraying spinning nozzle structures.
Background technique
Melt-blown textile technology is that polymer beads or slice are prepared into melt-blown non-woven material by melt-spraying spinning device
Technology.The process of melt-blown textile technology is generally as follows: being filled the graininess slice of polymer from melt-spraying spinning using meltblown
It is added in the hopper set, then by the extruding of high temperature screw rod and heat effect, it is polymer melt, polymerization that particle slice, which melts,
Object melt is squeezed out by the quantitative output action of metering pump from the spinneret orifice of melt-spraying spinning spray head, and the polymer melt of extrusion passes through
The air-flow of high temperature and high speed blows and sprays and draws and attenuates into superfine fibre, and receives cooling and shaping by receiving plane, forms melt-blown non-woven material.
Wherein, significant components of the melt-spraying spinning spray head as melt-spraying spinning device design and prepare parameter to producing
To melt-blown non-woven material performance structure tool have a significant impact.It is used in the melt-spraying spinning device that the relevant technologies provide
Melt-spraying spinning spray head is usually the melt-spraying spinning spray head of dual-trench type structure, it is characterized in that filament spinning component, which includes one, single spinneret
The nose type component in hole, the inside form 30 ° ~ 150 ° angles, nose type component both sides are distributed in there are two fumarole, in fumarole
Two strands of high-temperature high-speed airflows by slit according to certain angle converge to single spinneret orifice squeeze out polymer melt lead
Refinement is stretched, and forms melt-blown non-woven material after being received by reception device.In the installation process of melt-spraying spinning spray head, melt-blown is spun
Silk spray head various components be usually integration be fixedly mounted, that is, melt-spraying spinning spray head after installation is complete, the company of various components
Connecing mode and distribution mode fixation can not change, and fixation can not yet for the relative position in filament spinning component between fumarole and spinneret orifice
Change.
In the implementation of the present invention, inventor find the relevant technologies the prior art has at least the following problems:
In existing melt-spraying spinning device, the various components of melt-spraying spinning spray head form integration entirety after mounting and can not carry out
Change in structure, the property for the melt-blown non-woven material for causing melt-spraying spinning device to be able to produce in actual production operation
Can be more single with structure, greatly constrain the production efficiency and production diversification of melt-blown non-woven material.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the present invention provides a kind of melt-spraying spinning nozzle structures.
According to an aspect of an embodiment of the present invention, a kind of melt-spraying spinning nozzle structure, including conveying mould group and spray are provided
Head mould group, it is characterised in that:
The conveying mould group includes the first matrix (1), melt conveying channel (2) and is symmetrically set in the melt conveying channel
(2) the air-flow transfer passage (3) of two sides；
The Nozzle At The Ingot Mold group is connected to the lower end of the conveying mould group, and the Nozzle At The Ingot Mold group includes the second matrix (4), spinneret orifice
(5) the buffering air cavity (6) and fumarole (7) of the spinneret orifice (5) two sides, buffering air cavity (6) side are symmetrically set in and
Lower end is connected to the air inlet of the fumarole (7), and the relatively described spinneret orifice (5) of the fumarole (7) tilts in predetermined angle
Setting；
Melt conveying channel (2) connection corresponding with the spinneret orifice (5), the air-flow transfer passage (3) and the buffering
The corresponding connection of air cavity (6), the lower surface of first matrix (1) and the upper surface of second matrix (4) fit closely.
In a preferred embodiment, the width X and length Y of buffering air cavity (6) are all larger than the air-flow conveying
The diameter D in channel (3).
In a preferred embodiment, melt conveying channel (2) exit described in the first matrix (1) lower surface
Side is equipped with circular protrusion, and the side of spinneret orifice (5) inlet described in the second matrix (4) upper surface is equipped with annular recess,
The circular protrusion is correspondingly arranged with the annular recess.
In a preferred embodiment, the melt-spraying spinning nozzle structure further includes reinforcing shell, the reinforcing shell
It is coated on the outer surface of the Nozzle At The Ingot Mold group and the outer surface side of the conveying mould group lower part, the bottom for reinforcing shell simultaneously
Through-hole is equipped at the center of end, the through-hole is used for so that the spinneret orifice (5) and fumarole (7) of the Nozzle At The Ingot Mold group and the external world connect
It is logical.
In a preferred embodiment, it is detachably connected between the conveying mould group and the Nozzle At The Ingot Mold group.
In a preferred embodiment, the diameter d, the height h of the Nozzle At The Ingot Mold group, the spray of the spinneret orifice (5)
The gas outlet diameter f of wire hole (5), the angle [alpha] of the fumarole (7), two fumaroles (7) gas outlet between spacing e it is each
A parameter meets: 0.15mm≤d≤1mm, 3mm≤h≤20mm, 0.1mm≤f≤3mm, 0 α≤75 ° <, 0 < e≤2.6mm.
In a preferred embodiment, the diameter D of the air-flow transfer passage (3), two air-flow transfer passages (3) it
Between spacing L, it is described buffering air cavity (6) width X, it is described buffering air cavity (6) length Y, it is described buffering air cavity (6) depth
The parameters of H meet: 0mm≤D≤8mm, 20mm≤L≤35mm, D≤X≤17mm, D≤Y≤4D, 0 < H < h.
In a preferred embodiment, the other side lower end of buffering air cavity (6) has smooth chamfering.
Compared with prior art, a kind of melt-spraying spinning nozzle structure provided by the invention has the advantage that
A kind of melt-spraying spinning nozzle structure provided by the invention includes conveying mould group and Nozzle At The Ingot Mold group, and conveying mould group includes the first base
Body, melt conveying channel and the air-flow transfer passage for being symmetrically set in melt conveying channel two sides；Nozzle At The Ingot Mold group is connected to conveying
The lower end of mould group, Nozzle At The Ingot Mold group include the second matrix, spinneret orifice and the buffering air cavity and jet that are symmetrically set in spinneret orifice two sides
Hole, buffering air cavity side lower end are connected to the air inlet of fumarole, and fumarole is obliquely installed with respect to spinneret orifice in predetermined angle；It is molten
Body transfer passage it is corresponding with spinneret orifice connection, air-flow transfer passage with buffering air cavity it is corresponding is connected to, the lower surface of the first matrix and
The upper surface of second matrix fits closely.Melt-spraying spinning spray head designs are innovatively conveying mould group and spray head by the present invention
The part of mould group two, and by conveying mould group and Nozzle At The Ingot Mold group junction design buffering air cavity, so that high-temperature high-pressure air flow is from gas
Stream transfer passage be conveyed into fumarole during sufficiently buffer, and then improve fumarole spray air-flow stability, avoid because
The irregular phenomenon of the melt-blown non-woven material quality of production caused by air-flow is unstable.
Further, the design for disassembly of melt-spraying spinning nozzle structure make staff can according to needs of production into
The replacement of row Nozzle At The Ingot Mold group improves the production chains of melt-blown non-woven material, and entire replacement process is convenient and efficient, can fit
Answer the high-efficiency precision quasi need of flow line production.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and in specification together principle for explaining the present invention.
Fig. 1 is a kind of structural schematic diagram of melt-spraying spinning spray head in existing melt-spraying spinning device.
Fig. 2 is a kind of structural schematic diagram of melt-spraying spinning nozzle structure shown according to an exemplary embodiment.
Fig. 3 is the angle and height relationships signal in a kind of existing melt-spraying spinning nozzle structure between spinneret orifice and fumarole
Figure.
Fig. 4 is the angle in melt-spraying spinning nozzle structure shown according to an exemplary embodiment between spinneret orifice and fumarole
Degree and height relationships schematic diagram.
Fig. 5 is the structural schematic diagram of a kind of circular protrusion and annular recess shown according to an exemplary embodiment.
Specific embodiment
Below in conjunction with specific embodiment (but being not limited to illustrated embodiment) and attached drawing the present invention is described in detail, the present embodiment
Only for illustrating that the present invention, the scope of the present invention should not be limited by the examples, the present invention can make various specific method in the application
The modification and variation of form and structure, these are similarly in the present patent application right based on the equivalent form on the basis of the present invention and want
Seek protection scope.
The melt-spraying spinning nozzle structure that embodiment provides in order to better illustrate the present invention, shows existing melt-spraying spinning first
The structural schematic diagram of melt-spraying spinning spray head compares explanation in device, as shown in Figure 1, in melt-spraying spinning spray head shown in fig. 1
In, melt-spraying spinning spray head is overall structure, integrated connection, air-flow transfer passage B between melt conveying channel A and spinneret orifice a
Integrated connection, this kind of design structure make melt-spraying spinning spray head after installation is complete between fumarole b, melt-spraying spinning spray head
Fumarole be fixed with respect to relevant parameters such as angles between spinneret orifice, if fumarole occurs or spinneret hole plug is existing
As staff is difficult to carry out timely efficient process, and then influences the real work efficiency of melt-spraying spinning device and be meltblown non-
The quality of production of weaving material.
In order to avoid the generation of above situation, inventor is observed by the practical work process to melt-spraying spinning device
And thinking overcomes series of technical by a large amount of creative experimental studies, it is final to propose shown in the embodiment of the present invention
A kind of melt-spraying spinning nozzle structure, as described below.
Fig. 2 is structural schematic diagram shown according to an exemplary embodiment, as shown in Fig. 2, providing a kind of melt-spraying spinning spray
Header structure, including conveying mould group and Nozzle At The Ingot Mold group, it is characterised in that:
The conveying mould group includes the first matrix (1), melt conveying channel (2) and is symmetrically set in the melt conveying channel
(2) the air-flow transfer passage (3) of two sides；The Nozzle At The Ingot Mold group is connected to the lower end of the conveying mould group, the Nozzle At The Ingot Mold group packet
Include the second matrix (4), spinneret orifice (5) and the buffering air cavity (6) and fumarole that are symmetrically set in the spinneret orifice (5) two sides
(7), buffering air cavity (6) the side lower end is connected to the air inlet of the fumarole (7), and the fumarole (7) is relatively described
Spinneret orifice (5) is obliquely installed in predetermined angle；Melt conveying channel (2) connection corresponding with the spinneret orifice (5), the gas
Flow transfer passage (3) connection corresponding with buffering air cavity (6), the lower surface of first matrix (1) and second matrix
(4) upper surface fits closely.
It should be noted that being symmetrically set in melt conveying channel (2) two sides in a kind of possible embodiment
The inlet port of air-flow transfer passage (3) is connected with two independent air-stream generating devices respectively, so that each air-flow conveys
Air-flow in channel (3) can be controlled individually, to realize the uneven distribution of air-flow.
In a preferred embodiment, the width X and length Y of buffering air cavity (6) are all larger than the air-flow conveying
The diameter D in channel (3).
The present invention is by being the package assembly for conveying mould group and Nozzle At The Ingot Mold group by melt-spraying spinning spray head designs, so that molten
Nozzle At The Ingot Mold group can optionally be replaced and be installed, to realize melt-blown according to actual production requirement by spraying device for spinning
The diversification production of non-woven material, also improves the cleaning efficiency and cleaning quality of melt-spraying spinning nozzle structure.
It should be noted that if existing melt-spraying spinning nozzle structure shown in FIG. 1 is merely divided into two parts up and down,
Following technical problem can be faced in actual installation process:
1) the junction aperture of air-flow transfer passage and fumarole is usually smaller, in the installation for carrying out melt-spraying spinning nozzle structure
When, air-flow transfer passage and fumarole are difficult Dock With Precision Position, are easy to cause the height during subsequent production in air-flow transfer passage
Warm high pressure draught is obstructed when by junction, smooth can not enter fumarole and carry out normal jet, to influence to be meltblown non-knit
The production efficiency and the quality of production of producing material material；
2) when carrying out the installation of melt-spraying spinning nozzle structure, even if melt-spraying spinning nozzle structure air-flow transfer passage and fumarole
After Dock With Precision Position, the contact surface of upper part and lower part is still easy to be easy to cause high-temperature high-pressure air flow passing through there are gap
By in high pressure indentation gap when junction, to cause the unstable of air-flow in fumarole, also it is easy to expand top and lower junction
Gap at conjunction reduces top and the bottom bond strength.
In view of the above-mentioned problems, upper end setting buffering air cavity of the present invention by the fumarole (7) in Nozzle At The Ingot Mold group, so that spray
When being attached installation, buffering air cavity can preferably accept air-flow transfer passage in conveying mould group for head mould group and conveying mould group
The high-temperature high-pressure air flow of ejection, and enter Nozzle At The Ingot Mold group after high-temperature high-pressure air flow is further buffered stabilization in buffering air cavity
Fumarole enables final fumarole to spray relatively stable high pressure draught.
In addition, the spacing in existing melt-spraying spinning device between melt conveying channel and air-flow transfer passage is commonly designed
For normal pitch, when needing the angle between fumarole and spinneret orifice that can reduce as much as possible, the height of spinneret orifice needs
Design is higher, at this point, effective reception distance at die orifice exit apart from receiving plane will shorten, further such that spinneret orifice sprays
Polymer melt out can not be adequately cooled solidification in air and be received face reception, and final production is caused to obtain
Melt-blown non-woven material structural instability, mechanical property are poor.
Melt-spraying spinning nozzle structure provided by the invention is by buffering the design of air cavity, so that buffering on the upside of one end of air cavity
It is connected to, is connected on the downside of the other end with the air inlet of fumarole, so that between fumarole and spinneret orifice with air-flow transfer passage
Angle can design it is smaller simultaneously, additionally it is possible to ensure spinneret orifice have lesser height.
In order to better illustrate buffering air cavity in Nozzle At The Ingot Mold group between spinneret orifice and fumarole angle, height design shadow
It rings, Fig. 3 is shown and Fig. 4 is illustrated.Fig. 3 be in existing melt-spraying spinning nozzle structure angle between spinneret orifice and fumarole and
Height relationships schematic diagram, wherein spacing m, n between melt conveying channel and air-flow transfer passage are spinneret orifice height, and α is
Angle between fumarole and spinneret orifice；Fig. 4 is spinneret orifice and spray in melt-spraying spinning nozzle structure provided in an embodiment of the present invention
Angle and height relationships schematic diagram between stomata, wherein spacing m, o between melt conveying channel and air-flow transfer passage
For spinneret orifice height, angle of the α between fumarole and spinneret orifice, the height for buffering air cavity is h, length l.In Fig. 3 and Fig. 4
In, the spacing m between melt conveying channel and air-flow transfer passage is identical, and the angle α between fumarole and spinneret orifice is identical,
The height h and length l for buffering air cavity are adjustable, and spinneret orifice height o, which is obviously smaller than, when the height h for buffering air cavity is smaller, in Fig. 4 schemes
Spinneret orifice height n in 3, to shorten the design height of fumarole while realizing saving Nozzle At The Ingot Mold group preparation cost.
In a preferred embodiment, melt conveying channel (2) exit described in the first matrix (1) lower surface
Side is equipped with circular protrusion, and the side of spinneret orifice (5) inlet described in the second matrix (4) upper surface is equipped with annular recess,
The circular protrusion is correspondingly arranged with the annular recess.
Wherein, the structural schematic diagram of circular protrusion and annular recess can be as shown in Figure 5.In Fig. 5, (1) is the first base
Body, (4) are the second matrix, and (2) are melt conveying channel, and (5) are spinneret orifice, and (8) are annular recess, and (9) are circular protrusion.
Further, the position of circular protrusion and annular recess can be exchanged, that is, the first matrix (1) lower surface
The side in melt conveying channel (2) exit is equipped with annular recess, spinneret orifice described in the second matrix (4) upper surface
(5) side of inlet is equipped with circular protrusion, and the circular protrusion is correspondingly arranged with the annular recess.The present invention is prominent to ring-type
It rises with the size of annular recess with no restrictions.
It should be noted that the matching design of circular protrusion and annular recess in addition to convenient for conveying mould group and Nozzle At The Ingot Mold group it
Between installation positioning it is outer, be also used to enhance the air-tightness of junction between melt conveying channel and spinneret orifice, avoid melt-spraying spinning
In the actual production operation of nozzle structure after finishing assembly, polymer melt is overflowed from the gap of junction.
In a preferred embodiment, the melt-spraying spinning nozzle structure further includes reinforcing shell, the reinforcing shell
It is coated on the outer surface of the Nozzle At The Ingot Mold group and the outer surface side of the conveying mould group lower part, the bottom for reinforcing shell simultaneously
Through-hole is equipped at the center of end, the through-hole is used for so that the spinneret orifice (5) and fumarole (7) of the Nozzle At The Ingot Mold group and the external world connect
It is logical.
Since in melt-spraying spinning nozzle structure provided by the invention, Nozzle At The Ingot Mold group is removably mounted to conveying mould group lower end,
The design that the junction of upper and lower parts is easy to reinforce shell there are gap can further strengthen conveying mould group and Nozzle At The Ingot Mold group
Between being completely embedded property, while further strengthening the whole air-tightness of melt-spraying spinning nozzle structure.
In a preferred embodiment, it is detachably connected between the conveying mould group and the Nozzle At The Ingot Mold group.
It should be noted that in order to improve melt-blown efficiency and melt-blown quality, existing melt-spraying spinning spray head in process of production,
Need to remove calcining cleaning at regular intervals.The present invention passes through being detachably connected between conveying mould group and Nozzle At The Ingot Mold group,
It only needs to carry out Nozzle At The Ingot Mold group to calcine the cleaning that can be realized to melt-spraying spinning spray head, and to the channel part of spray head module internal
Cleaning is more efficiently thorough.
In a preferred embodiment, the diameter d, the height h of the Nozzle At The Ingot Mold group, the spray of the spinneret orifice (5)
The gas outlet diameter f of wire hole (5), the angle [alpha] of the fumarole (7), two fumaroles (7) gas outlet between spacing e it is each
A parameter meets: 0.15mm≤d≤1mm, 3mm≤h≤20mm, 0.1mm≤f≤3mm, 0 α≤75 ° <, 0 < e≤2.6mm.
In a preferred embodiment, the diameter D of the air-flow transfer passage (3), two air-flow transfer passages (3) it
Between spacing L, it is described buffering air cavity (6) width X, it is described buffering air cavity (6) length Y, it is described buffering air cavity (6) depth
The parameters of H meet: 0mm≤D≤8mm, 20mm≤L≤35mm, D≤X≤17mm, D≤Y≤4D, 0 < H < h.
It should be noted that inventor has found by repeatedly creative experiment testing research, when conveying mould group and spray head
When mould group meets above-mentioned parameter condition, working efficiency is preferable, and the melt-blown non-woven material performance produced is also more excellent.
In a preferred embodiment, the other side lower end of buffering air cavity (6) has smooth chamfering.
After the design of smooth chamfering is so that the high-temperature high-pressure air flow of air-flow transfer passage conveying enters buffering air cavity, Neng Goujing
Conveying direction is changed by the smooth radian of smooth chamfering, the air inlet of fumarole is then conveyed into again, to avoid high temperature and pressure
Diameter directly touches air-flow rebound phenomena caused by buffering air cavity side wall or ground after air-flow enters buffering air cavity, further ensures
The stabilization of air-flow.
In conclusion a kind of melt-spraying spinning nozzle structure provided by the invention includes conveying mould group and Nozzle At The Ingot Mold group, conveying
Mould group includes the first matrix, melt conveying channel and the air-flow transfer passage for being symmetrically set in melt conveying channel two sides；Spray head
Mould group is connected to the lower end of conveying mould group, and Nozzle At The Ingot Mold group includes the second matrix, spinneret orifice and is symmetrically set in spinneret orifice two sides
Air cavity and fumarole are buffered, buffering air cavity side lower end is connected to the air inlet of fumarole, and fumarole is with respect to spinneret orifice in default
Angle tilt setting；The connection corresponding with spinneret orifice of melt conveying channel, the connection corresponding with buffering air cavity of air-flow transfer passage, first
The lower surface of matrix and the upper surface of the second matrix fit closely.Melt-spraying spinning spray head designs are innovatively by the present invention
Two part of mould group and Nozzle At The Ingot Mold group is conveyed, and by buffering air cavity in conveying mould group and the design of Nozzle At The Ingot Mold group junction, so that high
Warm high pressure draught sufficiently buffers during being conveyed into fumarole from air-flow transfer passage, and then improves fumarole and spray air-flow
Stability, avoid because air-flow it is unstable caused by the irregular phenomenon of the melt-blown non-woven material quality of production.
Further, the design for disassembly of melt-spraying spinning nozzle structure make staff can according to needs of production into
The replacement of row Nozzle At The Ingot Mold group, improves the production chains of melt-blown non-woven material.
Although having used general explanation, specific embodiment and test above, the present invention is described in detail,
But on the basis of the present invention, it can be modified or be improved, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, fall within the scope of the claimed invention without departing from theon the basis of the spirit of the present invention.
Those skilled in the art will readily occur to of the invention other after considering specification and practice invention here
Embodiment.The present invention is directed to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Adaptive change follow general principle of the invention and including the undocumented common knowledge in the art of the present invention or
Conventional techniques.It should be understood that the invention is not limited to the accurate knots for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.
Claims (8)
1. a kind of melt-spraying spinning nozzle structure, including conveying mould group and Nozzle At The Ingot Mold group, it is characterised in that:
The conveying mould group includes the first matrix (1), melt conveying channel (2) and is symmetrically set in the melt conveying channel
(2) the air-flow transfer passage (3) of two sides；
The Nozzle At The Ingot Mold group is connected to the lower end of the conveying mould group, and the Nozzle At The Ingot Mold group includes the second matrix (4), spinneret orifice
(5) the buffering air cavity (6) and fumarole (7) of the spinneret orifice (5) two sides, buffering air cavity (6) side are symmetrically set in and
Lower end is connected to the air inlet of the fumarole (7), and the relatively described spinneret orifice (5) of the fumarole (7) tilts in predetermined angle
Setting；
Melt conveying channel (2) connection corresponding with the spinneret orifice (5), the air-flow transfer passage (3) and the buffering
The corresponding connection of air cavity (6), the lower surface of first matrix (1) and the upper surface of second matrix (4) fit closely.
2. melt-spraying spinning nozzle structure according to claim 1, which is characterized in that it is described buffering air cavity (6) width X and
Length Y is all larger than the diameter D of the air-flow transfer passage (3).
3. melt-spraying spinning nozzle structure according to claim 1, which is characterized in that the first matrix (1) lower surface institute
The side for stating melt conveying channel (2) exit is equipped with circular protrusion, spinneret orifice (5) described in the second matrix (4) upper surface
The side of inlet is equipped with annular recess, and the circular protrusion is correspondingly arranged with the annular recess.
4. melt-spraying spinning nozzle structure according to claim 1, which is characterized in that the melt-spraying spinning nozzle structure also wraps
Include reinforcing shell, the appearance reinforced shell and be coated on the outer surface and the conveying mould group lower part of the Nozzle At The Ingot Mold group simultaneously
Face side, it is described reinforce shell bottom center at be equipped with through-hole, the through-hole be used for so that the Nozzle At The Ingot Mold group spinneret orifice
(5) it is in communication with the outside with fumarole (7).
5. melt-spraying spinning nozzle structure according to claim 1, which is characterized in that the conveying mould group and the Nozzle At The Ingot Mold
It is detachably connected between group.
6. melt-spraying spinning nozzle structure according to claim 2, which is characterized in that the diameter d of the spinneret orifice (5), institute
State the height h of Nozzle At The Ingot Mold group, the gas outlet diameter f of the spinneret orifice (5), the angle [alpha] of the fumarole (7), two fumaroles
(7) parameters of spacing e meet between gas outlet: 0.15mm≤d≤1mm, 3mm≤h≤20mm, 0.1mm≤f≤3mm
, 0 α≤75 ° <, 0 < e≤2.6mm.
7. melt-spraying spinning nozzle structure according to claim 6, which is characterized in that the air-flow transfer passage (3) it is straight
The width X of spacing L, buffering air cavity (6) between diameter D, two air-flow transfer passages (3), the length for buffering air cavity (6)
Spend Y, the parameters of the depth H for buffering air cavity (6) meet: 0mm≤D≤8mm, 20mm≤L≤35mm, D≤X≤
17mm, D≤Y≤4D, 0 < H < h.
8. melt-spraying spinning nozzle structure according to claim 1, which is characterized in that the other side of buffering air cavity (6)
Lower end has smooth chamfering.
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| CN113718353A (en) * | 2021-08-16 | 2021-11-30 | 界首市三宝宏达制线有限公司 | Spinning device and method for spinning |
| CN114457432A (en) * | 2022-02-14 | 2022-05-10 | 东华大学 | Air flow self-coupling melt-blowing die head for nanofiber preparation device |
| CN114672888A (en) * | 2022-04-20 | 2022-06-28 | 黄石市鸿达塑料模具有限责任公司 | Extrusion die for producing non-woven fabric by melt-blowing method |
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