CN212476967U - Melt-blowing die head for producing melt-blown cloth - Google Patents
Melt-blowing die head for producing melt-blown cloth Download PDFInfo
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- CN212476967U CN212476967U CN202021062617.3U CN202021062617U CN212476967U CN 212476967 U CN212476967 U CN 212476967U CN 202021062617 U CN202021062617 U CN 202021062617U CN 212476967 U CN212476967 U CN 212476967U
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- spinneret
- hot air
- cavity
- air outlet
- tube
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Abstract
A melt-blown die head for producing melt-blown cloth comprises a die head body, a distribution plate, a spinneret tube, a spinneret plate body and a screen plate, wherein the spinneret plate body comprises a hot air flow cavity, a counter bore arranged on a top plate of the hot air flow cavity, a plurality of spinneret tube holes arranged on a bottom plate of the counter bore, a hot air outlet hole arranged on the bottom plate of the hot air flow cavity and a hot air outlet hole communicated with the hot water flow cavity; the upper end of the spinneret tube is embedded with the spinneret tube hole, the lower end of the spinneret tube hole extends into the hot air outlet hole, and a gap between the spinneret tube and the hot air outlet hole forms an annular hot air channel; the screen is embedded in the counter bore. The single high-speed hot air flow is sprayed out to surround the single spinneret to spray out filaments, so that the filaments are stretched one by one, and uniform filament strips can be obtained. The optimal wire drawing speed is realized by adjusting the pressure of hot air flow in the hot air flow cavity. The multi-row spinneret orifices can reasonably and alternately obtain proper strand silk spacing to ensure even distribution density, and more spinneret orifices can be arranged in unit length of the multi-row spinneret orifices compared with the traditional spray head, so that the yield is greatly improved.
Description
Technical Field
The utility model relates to a melt-blown die head for producing melt-blown cloth.
Background
At present, in the prior art, a melt-blown head structure of a melt-blown machine includes a mold body which is symmetrical up and down, a central flow channel is provided between the upper mold body and the lower mold body, the mold body includes a base body, a heating device and an airflow distribution device, the heating device includes a first heating block and a second heating block, the first heating block and the second heating block are fixedly connected with a distribution plate, a first flow channel and a second flow channel which are perpendicular to each other are formed between the airflow distribution device and the base body, the airflow distribution device has an airflow inlet hole, a first flow guide channel and a second flow guide channel which are connected in sequence, the side part of the airflow distribution device further has an inclined channel, the inclined channel is communicated with the first flow channel, and the second flow guide. There are problems in that: the structure is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: a meltblown die head for producing meltblown webs is provided which features a hot gas stream surrounding and drawing each filament of the polymer melt.
The utility model discloses a realize like this: a melt-blown die head for producing melt-blown cloth comprises a die head body, a distribution plate and a spinneret, wherein the die head body comprises a polymer melt cavity with a lower opening and a polymer melt-in joint; the distribution plate is provided with a plurality of distribution holes and is arranged in the polymer melt cavity; it is characterized in that: the spinneret plate body comprises a hot air flow cavity, a counter bore arranged on a top plate of the hot air flow cavity, a plurality of spinneret tube holes arranged on a base plate of the counter bore, a hot air outlet hole arranged on a base plate of the hot air flow cavity and a hot air outlet hole communicated with the hot water flow cavity; the axes of the spinneret orifice and the hot air outlet are superposed;
the upper end of the spinneret tube is embedded with the spinneret tube hole, the lower end of the spinneret tube hole extends into the hot air outlet hole, and a gap between the spinneret tube and the hot air outlet hole forms an annular hot air channel; the screen is embedded in the counter bore.
Preferably: the lower end surface of the spinneret tube and the lower surface of the bottom plate of the hot airflow cavity are on the same plane;
or the lower surface of the bottom plate of the hot airflow cavity has a height difference with the lower end surface of the spinneret tube.
Preferably: the spinneret tube comprises a liquid inlet guide tube part and a liquid outlet capillary tube part positioned at the lower part.
Preferably: the inner cavity of the liquid inlet guide pipe part of the spinneret is provided with a plurality of circular cavities from top to bottom, the diameter of the circular cavity at the upper part is larger than that of the circular cavity at the lower part, and two adjacent circular cavities are communicated through an inverted frustum-shaped compression cavity; the circular cavity at the lower end is communicated with the liquid outlet capillary part through an inverted cone frustum-shaped compression cavity.
Preferably: the outer circumferential surface of the lower part of the spinneret tube comprises a cylindrical part, a small-cone-angle inverted-cone-shaped part, a large-cone-angle inverted-cone-shaped part and a lower cylindrical part from top to bottom;
the lower cylindrical part is matched with the cylindrical air jet part, the large-cone-angle inverted-cone-frustum-shaped part is opposite to the middle lower part of the inverted-cone-frustum-shaped compression part, the small-cone-angle inverted-cone-frustum-shaped part extends to the middle part of the cylindrical air inlet part from the inside of the inverted-cone-frustum-shaped compression part, and the cylindrical part extends into the cylindrical air inlet part.
Preferably: the spinneret orifices are distributed according to a determinant, the spinneret orifices in two adjacent rows or two adjacent rows are spaced, the hot air outlet holes are distributed according to the determinant, and the hot air outlet holes in two adjacent rows or two adjacent rows are spaced.
Preferably: at least three rows of spinneret orifices form a spinneret orifice group, and spinneret orifices in two adjacent rows are spaced; the hot air outlet holes are formed in at least three rows to form a hot air outlet hole group, and the hot air outlet holes in two adjacent rows are spaced.
The utility model relates to a melt-blown die head for producing melt-blown fabric, owing to adopt such structure, single high-speed hot gas flow of spouting encircles single spinneret blowout filament, forms and draws one by one, can obtain even strand silk. The optimal wire drawing speed is realized by adjusting the pressure of hot air flow in the hot air flow cavity, so that the optimal wire drawing effect is obtained. The multi-row spinneret orifices can reasonably and alternately obtain proper strand silk spacing to ensure even distribution density, and more spinneret orifices can be arranged in unit length of the multi-row spinneret orifices compared with the traditional spray head, so that the yield is greatly improved.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a view a-a of fig. 1.
Fig. 3 is a partially enlarged view of fig. 2.
Fig. 4 is a front view of the distributor plate of the present invention.
Fig. 5 is a bottom view of the distributor plate of the present invention.
Fig. 6 is a top view of the spinneret body and spinneret assembly of the present invention.
Fig. 7 is a front view of the spinneret body and spinneret assembly of the present invention.
Fig. 8 is a front view of the spinneret of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in FIG. 1, a melt-blowing die for producing a melt-blown fabric comprises a die body 1, a distribution plate 2 and a spinneret 3, wherein the die body 1 comprises a polymer melt cavity 11 with a lower opening and a polymer melt-in joint 12; the distribution plate 2 is provided with a plurality of distribution holes 21, and the distribution plate 2 is arranged in the polymer melting cavity 11;
the spinneret plate comprises a spinneret plate body 4 and a screen plate 5, wherein the spinneret plate body 4 comprises a hot air flow cavity 41, a counter bore 42 arranged on a top plate of the hot air flow cavity 41, a plurality of spinneret tube holes 43 arranged on a base plate of the counter bore, a hot air outlet hole 44 arranged on a base plate of the hot air flow cavity and a hot air outlet hole 45 communicated with the hot water flow cavity; the axes of the spinneret holes 43 and the hot air outlet holes 44 are superposed;
the upper end of the spinneret tube 3 is embedded with the spinneret tube hole 43, the lower end of the spinneret tube hole 3 extends into the hot air outlet hole 44, and a gap between the spinneret tube 3 and the hot air outlet hole 44 forms an annular hot air channel; the mesh plate 5 is embedded in the counterbore 42.
The lower end surface of the spinneret tube 3 and the lower surface of the bottom plate of the hot air flow cavity 41 are on the same plane;
or the lower surface of the bottom plate of the hot air flow cavity 41 has a height difference with the lower end surface of the spinneret 3.
The spinneret tube 3 comprises a liquid inlet guide tube part 31 and a liquid outlet capillary tube part 32 positioned at the lower part;
the inner cavity of the liquid inlet guide pipe part 31 of the spinneret 3 is provided with a plurality of circular cavities 311 from top to bottom, the diameter of the circular cavity 311 at the upper part is larger than that of the circular cavity 311 at the lower part, and two adjacent circular cavities 311 are communicated through an inverted frustum-shaped compression cavity 312; the circular cavity 311 at the lower end is communicated with the liquid outlet capillary tube part 32 through an inverted frustum-shaped compression cavity 312.
The outer circumferential surface of the lower part of the spinneret tube 3 comprises a cylindrical part 33, a small-cone-angle inverted cone frustum-shaped part 34, a large-cone-angle inverted cone frustum-shaped part 35 and a lower cylindrical part 36 from top to bottom;
the hot air outlet 44 has a cylindrical inlet 441, an inverted truncated cone compressor 442, and a cylindrical jet 443 from the top down.
The lower cylindrical portion 36 is fitted to the cylindrical gas ejection portion 443, the large-cone-angle inverted-cone-shaped portion 35 is opposed to the middle-lower portion of the inverted-cone-shaped compression portion 442, the small-cone-angle inverted-cone-shaped portion 34 extends from inside the inverted-cone-shaped compression portion 442 to the middle of the cylindrical gas inflow portion 441, and the cylindrical portion 33 extends into the cylindrical gas inflow portion 441.
The spinneret holes 43 are distributed according to a determinant, the spinneret holes 43 in two adjacent rows or two adjacent rows are spaced, the hot air outlet holes 44 are distributed according to a determinant, and the hot air outlet holes 44 in two adjacent rows or two adjacent rows are spaced.
Or the spinneret orifices 43 form a spinneret orifice group by three rows, and the spinneret orifices 43 in two adjacent rows are spaced; the hot air outlet holes 44 are formed in a hot air outlet hole group by three rows, and the hot air outlet holes 44 in two adjacent rows are spaced.
What has been described above is only a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and variations can be made without departing from the principle of the invention, which is also considered as the protection scope of the invention.
Claims (7)
1. A melt-blown die head for producing melt-blown cloth comprises a die head body, a distribution plate and a spinneret, wherein the die head body comprises a polymer melt cavity with a lower opening and a polymer melt-in joint; the distribution plate is provided with a plurality of distribution holes and is arranged in the polymer melt cavity; the method is characterized in that: the spinneret plate body comprises a hot air flow cavity, a counter bore arranged on a top plate of the hot air flow cavity, a plurality of spinneret tube holes arranged on a base plate of the counter bore, a hot air outlet hole arranged on a base plate of the hot air flow cavity and a hot air outlet hole communicated with the hot water flow cavity; the axes of the spinneret orifice and the hot air outlet are superposed;
the upper end of the spinneret tube is embedded with the spinneret tube hole, the lower end of the spinneret tube hole extends into the hot air outlet hole, and a gap between the spinneret tube and the hot air outlet hole forms an annular hot air channel; the screen is embedded in the counter bore.
2. A meltblowing die for producing meltblown fabric according to claim 1 wherein: the lower end surface of the spinneret tube and the lower surface of the bottom plate of the hot airflow cavity are on the same plane;
or the lower surface of the bottom plate of the hot airflow cavity has a height difference with the lower end surface of the spinneret tube.
3. A meltblowing die for producing meltblown fabric according to claim 1 wherein: the spinneret tube comprises a liquid inlet guide tube part and a liquid outlet capillary tube part positioned at the lower part.
4. A meltblowing die for producing meltblown fabric according to claim 3, wherein: the inner cavity of the liquid inlet guide pipe part of the spinneret is provided with a plurality of circular cavities from top to bottom, the diameter of the circular cavity at the upper part is larger than that of the circular cavity at the lower part, and two adjacent circular cavities are communicated through an inverted frustum-shaped compression cavity; the circular cavity at the lower end is communicated with the liquid outlet capillary part through an inverted cone frustum-shaped compression cavity.
5. A meltblowing die for producing meltblown fabric according to claim 1 wherein: the outer circumferential surface of the lower part of the spinneret tube comprises a cylindrical part, a small-cone-angle inverted-cone-shaped part, a large-cone-angle inverted-cone-shaped part and a lower cylindrical part from top to bottom;
the lower cylindrical part is matched with the cylindrical air jet part, the large-cone-angle inverted-cone-frustum-shaped part is opposite to the middle lower part of the inverted-cone-frustum-shaped compression part, the small-cone-angle inverted-cone-frustum-shaped part extends to the middle part of the cylindrical air inlet part from the inside of the inverted-cone-frustum-shaped compression part, and the cylindrical part extends into the cylindrical air inlet part.
6. A meltblowing die for producing meltblown fabrics according to claim 1, 2, 3, 4 or 5 wherein: the spinneret orifices are distributed according to a determinant, the spinneret orifices in two adjacent rows or two adjacent rows are spaced, the hot air outlet holes are distributed according to the determinant, and the hot air outlet holes in two adjacent rows or two adjacent rows are spaced.
7. A meltblowing die for producing meltblown fabrics according to claim 1, 2, 3, 4 or 5 wherein: at least three rows of spinneret orifices form a spinneret orifice group, and spinneret orifices in two adjacent rows are spaced; the hot air outlet holes are formed in at least three rows to form a hot air outlet hole group, and the hot air outlet holes in two adjacent rows are spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021062617.3U CN212476967U (en) | 2020-06-10 | 2020-06-10 | Melt-blowing die head for producing melt-blown cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021062617.3U CN212476967U (en) | 2020-06-10 | 2020-06-10 | Melt-blowing die head for producing melt-blown cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212476967U true CN212476967U (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021062617.3U Expired - Fee Related CN212476967U (en) | 2020-06-10 | 2020-06-10 | Melt-blowing die head for producing melt-blown cloth |
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| CN (1) | CN212476967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534866A (en) * | 2020-06-10 | 2020-08-14 | 王成铸 | Melt-blowing die head for producing melt-blown cloth |
-
2020
- 2020-06-10 CN CN202021062617.3U patent/CN212476967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534866A (en) * | 2020-06-10 | 2020-08-14 | 王成铸 | Melt-blowing die head for producing melt-blown cloth |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210205 |