CN212611022U - Wide melt-blown fabric mould - Google Patents
Wide melt-blown fabric mould Download PDFInfo
- Publication number
- CN212611022U CN212611022U CN202020668377.5U CN202020668377U CN212611022U CN 212611022 U CN212611022 U CN 212611022U CN 202020668377 U CN202020668377 U CN 202020668377U CN 212611022 U CN212611022 U CN 212611022U
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- air
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- spinneret
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- Nonwoven Fabrics (AREA)
Abstract
The utility model discloses a broad width type melt-blown fabric mould, include: the mould body, the one end of mould body sets up the edge a plurality of spinneret orifices that the first direction of mould body arranged in proper order, still be provided with two air-out portions on the mould body, every air-out portion all includes air-out groove, air flue, air-out groove is followed the bar groove that the first direction was arranged, the one end of air flue with air-out groove intercommunication, and the air flue is to being provided with the bellying in to, the bellying makes the water conservancy diversion clearance of air flue interlude reduces earlier the back increase, and is a plurality of the spinneret orifice all sets up two between the air-out groove, high-speed hot-air process during the bellying, twice sudden change takes place for the pressure that receives of high-speed hot-air to two sudden change values are positive one burden, thereby realize mashuping adjacent local air current, thereby make air-out groove exhaust hot-air more even.
Description
Technical Field
The utility model relates to a melt-blown fabric mould technical field, concretely relates to broad width type melt-blown fabric mould.
Background
The melt-blown die adopts a melt-blown non-woven process to produce melt-blown cloth, and the melt-blown non-woven process utilizes high-speed hot air to draw polymer melt fine flow extruded from spinneret orifices, so that ultrafine fibers are formed and condensed on a condensing net curtain or a roller, and the ultrafine fibers are bonded by the condensing net curtain or the roller to form the non-woven cloth.
The melt-blown cloth has the advantages that the structural thickness of the melt-blown cloth is small, the width of the melt-blown cloth is large, and the thickness and the width of the area distributed by the spinneret orifices of the die head are small, so that the thickness and the width of the air outlet matched with the melt-blown cloth are large, high-speed hot air exhausted from the air outlet is generally led in by using an air pipe, the cross section of the air pipe is generally circular, and the high-speed hot air in the air pipe cannot be uniformly exhausted from the air outlet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a broad width type melt-blown fabric mould, solve the unable technical problem who evenly discharges from the air outlet of high-speed hot-air in the air duct among the prior art.
In order to achieve the above technical purpose, the technical solution of the utility model provides a broad width type melt-blown fabric mould, include:
the die comprises a die body, wherein one end of the die body is provided with a plurality of spinneret orifices which are sequentially arranged along a first direction of the die body, the die body is also provided with two air outlet parts, each air outlet part comprises an air outlet groove and an air passage, the air outlet grooves are strip-shaped grooves which are arranged along the first direction, one end of the air passage is communicated with the air outlet grooves, the air passages are internally provided with convex parts, and the convex parts enable flow guide gaps in the middle sections of the air passages to be firstly reduced and then increased;
the spinneret orifices are arranged between the two air outlet grooves.
Compared with the prior art, the beneficial effects of the utility model include: this air flue among broad width type melt-blown fabric mould is used for carrying high-speed hot-air to discharge hot-air from air-out groove, two high-speed hot-air of the discharge of air-out groove collect in the dead ahead of spinneret orifice, utilize high-speed hot-air to pull the polymer fuse-element trickle that the spinneret orifice was extruded, the utility model discloses an innovation point is that the bellying has been set up in the air flue, the bellying makes the water conservancy diversion clearance of air flue interlude reduces earlier the back increase, thereby makes high-speed hot-air pass through during the bellying, twice sudden change takes place to the pressure that receives of high-speed hot-air to two sudden change values are positive one burden, thereby realize mixing together adjacent local air current, thereby make the hot-air of air-out groove exhaust more even.
Drawings
Fig. 1 is a schematic diagram of a right side view structure of an embodiment of a wide melt-blown fabric mold according to the present invention;
fig. 2 is a schematic front view of an embodiment of the wide meltblown fabric mold according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, the utility model discloses a wide melt-blown fabric mold, which comprises: the mold body (the side plates for sealing on the left and right sides of the mold body are removed in fig. 1 and 2).
One end of the die body is provided with a plurality of spinneret holes 1a which are sequentially arranged along a first direction of the die body, the die body is further provided with two air outlet parts, each air outlet part comprises an air outlet groove 1b1 and an air passage 1b2, the air outlet groove 1b1 is an elongated groove which is arranged along the first direction, one end of the air passage 1b2 is communicated with the air outlet groove 1b1, the air passage 1b2 is internally provided with a bulge part 1b3, the bulge part 1b3 enables a flow guide gap of the middle section of the air passage 1b2 to be firstly reduced and then increased, and the spinneret holes 1a are arranged between the two air outlet grooves 1b 1.
Air flue among this broad width type melt-blown fabric mould is used for carrying high-speed hot-air to discharge hot-air from air-out groove 1b1, two air-out groove 1b 1's exhaust high-speed hot-air collects in spinneret orifice 1 a's dead ahead, utilizes high-speed hot-air to pull the polymer melt trickle of extruding spinneret orifice 1a, the novel point of the utility model is that boss 1b3 has been set up in the air flue 1b2, boss 1b3 makes the water conservancy diversion clearance of air flue 1b2 interlude reduces earlier the back increase to make high-speed hot-air process when boss 1b3, the pressure that receives of high-speed hot-air takes place twice sudden change, and two times sudden change value is positive one negative, thereby realizes mashuping adjacent local air current, thereby makes air-out groove 1b1 hot-air more even.
In the present embodiment, the first direction represents the width direction of the die main body, and may be understood as the width direction of the meltblown fabric when it is discharged from the spinneret hole 1 a.
The second direction represents the longitudinal direction of the die body, and may be understood as a discharge direction when the meltblown fabric is discharged from the spinneret hole 1 a.
The third direction represents a height direction of the mold body and may be understood as a thickness direction.
The first direction, the second direction and the third direction together form a three-dimensional coordinate system, and a reader can read with reference to the three-dimensional coordinate system.
Boss 1b3 is rectangular shape, and the length direction of boss 1b3 is followed the first direction is arranged to make the air current of the width direction of runner 1b2 all need to flow through boss 1b3, specifically, be provided with a plurality of edges on the mould body trachea 1b4 that the first direction was arranged, trachea 1b4 with air flue 1b2 keeps away from the one end intercommunication of air-out groove 1b1, thereby realizes air feed evenly distributed of the inlet end of air flue 1b 2.
The surface of the convex part 1b3 is a circular arc surface, and it can be understood that in this embodiment, the axis of the convex part 1b3 is parallel to the first direction, and the circular arc surface can reduce the turbulent flow generated when the air flow passes through the convex part 1b 3.
The following description specifically describes the mold body in a specific assembly structure:
the die body comprises a feeding plate 1, a spinneret plate 2 and a wind knife plate 3, wherein a mounting groove 1c and a flow channel 1d which are sequentially communicated along a second direction are formed in the feeding plate 1, and the second direction is perpendicular to the first direction; one side of the spinneret plate 2 is fixedly arranged in the mounting groove 1c, prismatic protrusions 2a protruding out of the mounting groove 1c are arranged on the other side of the spinneret plate 2, the discharge end of each spinneret hole 1a is arranged at the tip of the prismatic protrusion 2a, the feed end of each spinneret hole 1a is communicated with one end, close to the mounting groove 1c, of the runner 1d, the spinneret plate 2 is of an embedded structure, and the spinneret plate 2 is fixedly connected with the mounting groove 1c through screws, so that the spinneret plate 2 can be independently detached for replacement after being damaged, the whole die body does not need to be replaced, and replacement cost of production equipment is saved.
In this embodiment, a plurality of first threaded holes are disposed on one surface of the mounting groove 1c close to the flow channel 1d, a sealing groove 2b is disposed on one surface of the spinneret plate 2 close to the prismatic protrusion 2a, a plurality of first countersunk holes are disposed on a bottom surface of the sealing groove 2b, the plurality of first countersunk holes are coaxially disposed with the plurality of first threaded holes in a one-to-one correspondence manner, the die body further includes a sealing plate 4, a plurality of first screws a1, and a plurality of second screws a2, the first screws a1 are a plurality of, screw tails of the plurality of first screws a1 are threaded with the first threaded holes after passing through the plurality of first countersunk holes in a one-to-one correspondence manner, a head end of each first screw a1 is provided with a second threaded hole coaxially disposed therewith, the sealing plate 4 is provided with a plurality of second countersunk holes, and the plurality of second countersunk holes are coaxially disposed with the plurality of second threaded holes in a one-to-one correspondence manner, the screw tails of the second screws a2 penetrate through the second counter bores one by one and then are in threaded connection with the second threaded holes, the outer diameter of the head ends of the second screws a2 is smaller than that of the head ends of the first screws a1, the head ends of the larger first screws a1 in the sealing groove 2b and the sealing groove 2b are covered by the sealing plate 4, and then the smaller second screws a2 are used for fixing the sealing plate 4, so that the larger special-shaped structures at the head ends of the first screws a1 are covered, and the turbulent flow in the air passage 1b2 is further reduced.
In this embodiment, a distribution groove 2c is disposed on one surface of the spinneret plate 2 opposite to the flow channel 1d, the spinneret holes 1a, the distribution groove 2c, and the flow channel 1d are sequentially communicated along the second direction, the die body further includes a distribution plate 5, the distribution plate 5 is disposed in the distribution groove 2c, the distribution plate 5 is provided with a plurality of sieve holes 5a, axes of the sieve holes 5a are parallel to the second direction, the distribution plate 5 is used for refining the polymer melt entering the spinneret holes 1a from the flow channel 1d, the number of the distribution plates 5 is two, and a filter screen 6 is interposed between the two distribution plates 5, so as to form a sandwich structure, the two distribution plates 5 are embedded in the distribution groove 2c and fixedly connected to the distribution groove 2c through a set of screws, and the above structure can take out the two distribution plates 5 together when disassembled, thereby being convenient for dismantle the filter screen 6 between two the distributor plate 5, avoid filter screen 6 bonding spinneret 2 or on the feed plate 1.
In this embodiment, the feed plate 1 is a haversian structure, the width of the runner 1d gradually increases from the end far away from the mounting groove 1c to the end near the mounting groove 1c, the thickness of the middle area of the runner 1d is smaller than the thickness of the areas at both sides (the thickness of the section of the runner formed in any one of the first direction and the third direction, the middle is thin, and both sides are thick), namely, the coat hanger-shaped runner, so that the polymer melt is distributed more uniformly along the width direction of the runner 1 d.
Every a plurality of waist hole 3a has all been seted up on the air knife board 3, and the waist of waist hole 3a is arranged along the third direction, the equal mutually perpendicular of third direction, second direction, first direction, a plurality of third screw hole has been seted up on the feed plate 1, a plurality of third screw hole one-to-one and a plurality of waist hole 3a is arranged relatively, the mould body still includes a plurality of third screw a3, a plurality of the spiral shell tail one-to-one of third screw a3 passes a plurality of behind the waist hole 3a with third screw hole threaded connection loosens can reciprocate behind the third screw a3 air knife board 3 to realize air outlet duct 1b 1's thickness adjustment.
And the following mechanism is also specifically arranged for facilitating the thickness adjustment of the air outlet groove 1b 1:
the feeding plate 1 is provided with two convex eaves 1e, the two convex eaves 1e are arranged at one end of the wind knife plate 3 far away from the prismatic protrusion 2a in a one-to-one manner, the length direction of each convex eaves 1e is arranged along the first direction, the wind knife plate 3 is opposite to one surface of each convex eaves 1e, a plurality of connecting holes are formed in each convex eaves 1e, a plurality of fourth threaded holes and a plurality of fifth threaded holes are formed in each convex eaves 1e, the connecting holes are in one-to-one correspondence with the plurality of fourth threaded holes in a coaxial manner, the axial directions of the connecting holes, the fourth threaded holes and the fifth threaded holes are parallel to the third direction, the die body further comprises a plurality of fourth screws a4 and a plurality of fifth screws a5, the fourth screws a4 are in one-to-one threaded connection with the fourth threaded holes, and the screw tails of the fourth screws a4 are axially fixed with the connecting holes (the fourth screws are rotatably connected with the connecting holes in a manner However, the air knife plate 3 can move up and down synchronously with the fourth screw a 4), a plurality of fifth screws a5 are in one-to-one correspondence with a plurality of fifth threaded holes, and the screw tails of the fifth screws can abut against one surface of the air knife plate 3 opposite to the convex eave 1e, in this embodiment, a plurality of fourth screws a4 and fifth screws a4 are provided, and a plurality of fourth screws a4 and fifth screws a5 are arranged at intervals in the first direction in sequence, the fourth screws a4 are used as tension screws, the fifth screws a5 are used as pressure screws, tension generated by rotating the fourth screws a4 can increase the thickness of the air outlet grooves 1b1, and pressure generated by rotating the fifth screws a5 can reduce the thickness of the air outlet grooves 1b 1.
The working principle is as follows: the air flue in the wide-width melt-blown fabric die is used for conveying high-speed hot air and discharging the hot air from the air outlet grooves 1b1, the discharged high-speed hot air of the two air outlet grooves 1b1 is converged right ahead of the spinneret orifice 1a, and polymer melt trickle extruded from the spinneret orifice is pulled by the high-speed hot air, the novel point of the utility model is that a bulge part 1b3 is arranged in the air flue, the flow guide gap of the middle section of the air flue 1b2 is firstly reduced and then increased by the bulge part 1b3, so that when the high-speed hot air passes through the bulge part 1b3, the pressure applied to the high-speed hot air is subjected to two sudden changes, and the two sudden changes have positive and negative values, so that adjacent local air flows are kneaded, the hot air discharged from the air outlet grooves 1b1 is more uniform, and the length direction of the bulge part 1b3 is arranged along the first direction, thereby make the width direction's of runner air current all flow through bellying 1b3, further improve the homogeneity of air current, two it is equipped with filter screen 6 to press from both sides between the distributor plate 5 to constitute a sandwich structure, above-mentioned structure convenient to detach two filter screen 6 between the distributor plate 5 avoids filter screen 6 to bond on spinneret 2 or the feed plate 1.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a broad width type melt-blown fabric mould which characterized in that includes:
the die comprises a die body, wherein one end of the die body is provided with a plurality of spinneret orifices which are sequentially arranged along a first direction of the die body, the die body is also provided with two air outlet parts, each air outlet part comprises an air outlet groove and an air passage, the air outlet grooves are strip-shaped grooves which are arranged along the first direction, one end of the air passage is communicated with the air outlet grooves, the air passages are internally provided with convex parts, and the convex parts enable flow guide gaps in the middle sections of the air passages to be firstly reduced and then increased;
the spinneret orifices are arranged between the two air outlet grooves.
2. The wide meltblown die of claim 1 wherein said projections are elongated and the length of said projections is oriented in said first direction.
3. The broad meltblown die of claim 2 wherein the surface of the raised portion is a circular arc.
4. The wide meltblown fabric die of claim 1, wherein the die body comprises a feed plate, a spinneret plate and an air knife plate, the feed plate is provided with a mounting groove and a runner which are sequentially communicated along a second direction, and the second direction is perpendicular to the first direction; one side of the spinneret plate is fixedly arranged in the mounting groove, the other side of the spinneret plate is provided with prismatic protrusions protruding out of the mounting groove, the discharge end of each spinneret hole is arranged at the tip of the prismatic protrusion, and the feed end of each spinneret hole is communicated with one end, close to the mounting groove, of the flow channel; the air knife board is two, two the air knife board all with feeding plate fixed connection, the air knife board with form the clearance between the opposite face of feeding plate, spinneret and do the air flue, the air knife board with the gap that forms between the bellied opposite face of prism does the air-out duct, the bellying sets up on the air knife board.
5. The broad meltblown fabric die as claimed in claim 4, wherein the mounting groove has a plurality of first threaded holes on a surface thereof adjacent to the flow channel, the spinneret has a sealing groove on a surface thereof adjacent to the prismatic protrusions, the sealing groove has a plurality of first countersunk holes on a bottom surface thereof, the plurality of first countersunk holes are coaxially disposed with the plurality of first threaded holes, the die body further comprises a sealing plate, a plurality of first screws, and a plurality of second screws, the tails of the plurality of first screws penetrate the plurality of first countersunk holes in a one-to-one correspondence manner and are then threadedly coupled to the first threaded holes, the head end of each first screw is provided with a second threaded hole coaxially disposed therewith, the sealing plate has a plurality of second countersunk holes, the plurality of second countersunk holes are coaxially disposed with the plurality of second threaded holes in a one-to-one correspondence manner, the screw tails of the second screws penetrate through the second counter bores in a one-to-one correspondence mode and then are in threaded connection with the second threaded holes, and the outer diameters of the head ends of the second screws are smaller than that of the head ends of the first screws.
6. The wide melt-blown fabric die as claimed in claim 4, wherein a distribution groove is formed in a surface of the spinneret plate opposite to the flow paths, the spinneret holes, the distribution groove and the flow paths are sequentially communicated along the second direction, the die body further comprises a distribution plate, the distribution plate is disposed in the distribution groove, the distribution plate is provided with a plurality of screen holes, and axes of the screen holes are parallel to the second direction.
7. The broad melt blown fabric die of claim 6, wherein the number of distributor plates is two and a filter screen is sandwiched between the two distributor plates.
8. The wide melt-blown fabric mold according to claim 4, wherein the width of the runner gradually increases from an end away from the mounting groove to an end close to the mounting groove; the thickness of the middle area of the flow channel is smaller than the thickness of the two side areas of the flow channel.
9. The broad meltblown fabric die according to claim 4, wherein each of the plurality of web plates has a plurality of web holes formed therein, the webs of the web holes are arranged along a third direction, the second direction and the first direction are perpendicular to each other, the feed plate has a plurality of third threaded holes formed therein, the plurality of third threaded holes are arranged in a one-to-one correspondence with the plurality of web holes, the die body further comprises a plurality of third screws, and tails of the plurality of third screws are threaded with the third threaded holes after passing through the plurality of web holes in a one-to-one correspondence.
10. The broadcloth melt-blown fabric mold of claim 9, wherein the feeding plate is provided with two flanges, the two flanges are correspondingly arranged at one end of the two air knife plates away from the prismatic protrusion, the length direction of each flange is arranged along the first direction, one surface of each air knife plate opposite to the flange is provided with a plurality of connecting holes, the flange is provided with a plurality of fourth threaded holes and a plurality of fifth threaded holes, the plurality of connecting holes are correspondingly arranged coaxially with the plurality of fourth threaded holes, the axial directions of the connecting holes, the fourth threaded holes and the fifth threaded holes are all parallel to the third direction, the mold body further comprises a plurality of fourth screws and a plurality of fifth screws, and the plurality of fourth screws are in threaded connection with the plurality of fourth threaded holes, and the screw tail of the fourth screw is axially fixed with the connecting hole, the fifth screws are in one-to-one correspondence with the fifth threaded holes and are in threaded connection, and the screw tail of the fifth screw can abut against one surface of the wind knife board, which is opposite to the convex eaves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020668377.5U CN212611022U (en) | 2020-04-27 | 2020-04-27 | Wide melt-blown fabric mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020668377.5U CN212611022U (en) | 2020-04-27 | 2020-04-27 | Wide melt-blown fabric mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212611022U true CN212611022U (en) | 2021-02-26 |
Family
ID=74711406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020668377.5U Expired - Fee Related CN212611022U (en) | 2020-04-27 | 2020-04-27 | Wide melt-blown fabric mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212611022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373594A (en) * | 2021-07-01 | 2021-09-10 | 佛山市启新模具有限公司 | Melt-blown fabric mould of multi-row hole shower nozzle |
-
2020
- 2020-04-27 CN CN202020668377.5U patent/CN212611022U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373594A (en) * | 2021-07-01 | 2021-09-10 | 佛山市启新模具有限公司 | Melt-blown fabric mould of multi-row hole shower nozzle |
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| 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: 20210226 |