CN214168198U - Melt-blown fabric spinning die - Google Patents
Melt-blown fabric spinning die Download PDFInfo
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- CN214168198U CN214168198U CN202022998378.9U CN202022998378U CN214168198U CN 214168198 U CN214168198 U CN 214168198U CN 202022998378 U CN202022998378 U CN 202022998378U CN 214168198 U CN214168198 U CN 214168198U
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Abstract
The utility model provides a melt-blown fabric spouts a mould, include: the die comprises a die body, a spinneret plate and two air deflectors, wherein a melting cavity flow channel is formed in the die body, a feed inlet communicated with the melting cavity flow channel is formed in the upper end surface of the die body, and a strip-shaped discharge outlet communicated with the melting cavity flow channel is formed in the lower end surface of the die body; the spinneret plate is provided with a plurality of spinneret orifices which are arranged in a straight line, the spinneret plate is arranged on the lower surface of the die body, and the spinneret orifices are communicated with the discharge hole; the two air deflectors are arranged on the lower surface of the spinneret plate and distributed on two sides of the spinneret orifice, a gap air cavity is formed between the air deflectors and the spinneret plate, a first buffer groove and a second buffer groove are formed in the upper surface of the air deflectors, the second buffer groove is located between the gap air cavity and the first buffer groove, and high-speed hot air enters the second buffer groove through the first buffer groove and is output from the gap air cavity. The air pressure distribution is uniform so as to meet the requirement of balanced air supply of the long-size die, and the production quality of the melt-blown fabric is improved.
Description
Technical Field
The utility model relates to the technical field of machinery, especially, relate to a melt-blown fabric spouts a mould.
Background
Meltblown webs are generally nonwovens formed by drawing a fine stream of polymer melt extruded from the die orifices in a die with high velocity hot air to form microfibers, which are directed onto a collection device and bonded to itself. The mould is an important component in the spray melting process, a melting cavity runner is arranged on the mould to meet the flow requirement of the melt, and meanwhile, an airflow channel is also configured to meet the flow requirement of high-speed hot air. For example: chinese patent No. 202010315117.4 discloses a melt-blown fabric spinning module, a melt-blown fabric die and a melt-blown fabric manufacturing method, wherein the melt-blown fabric spinning module comprises a spinneret, a feeding plate and an air inlet plate, wherein the air inlet plate is provided with an air inlet hole for conveying high-speed hot air, and the high-speed hot air is output from the air inlet plate and is output from a gap air cavity formed between the air inlet plate and the spinneret, so as to draw melt trickle extruded from the spinneret. And in order to improve production efficiency, the whole length of mould increases, and 1600 mm's mould is used widely, but, the whole length of mould is longer, and the air of air inlet plate output can lead to the draft effect relatively poor because of the atmospheric pressure distributes unevenly in transportation process, and then makes the quality of the melt-blown fabric of formation relatively poor. How to design a mould technique that the atmospheric pressure distributes evenly in order to improve the production quality of melt-blown cloth is the utility model aims to solve the technical problem.
Disclosure of Invention
The utility model provides a melt-blown fabric spouts a mould realizes that atmospheric pressure distributes evenly in order to satisfy the requirement of the balanced air feed of long-size mould, has improved the production quality of melt-blown fabric.
The utility model provides a melt-blown fabric spouts a mould, include: the die comprises a die body, a spinneret plate and two air deflectors, wherein a melting cavity flow channel is formed in the die body, a feed inlet communicated with the melting cavity flow channel is formed in the upper end face of the die body, and a strip-shaped discharge outlet communicated with the melting cavity flow channel is formed in the lower end face of the die body;
the spinneret plate is provided with a plurality of spinneret orifices which are arranged in a straight line, the spinneret plate is arranged on the lower surface of the die body, and the spinneret orifices are communicated with the discharge hole;
the two air deflectors are arranged on the lower surface of the spinneret plate and distributed on two sides of the spinneret orifice, a gap air cavity is formed between the air deflectors and the spinneret plate, a first buffer groove and a second buffer groove are arranged on the upper surface of the air deflectors, the second buffer groove is located between the gap air cavity and the first buffer groove, and high-speed hot air enters the second buffer groove through the first buffer groove and is output from the gap air cavity.
Furthermore, the die body comprises two die plates, the inner surfaces of the die plates are provided with flow grooves, the lower surfaces of the die plates are provided with converging grooves, the die plates are internally provided with a gas collecting channel, a gas distributing channel, a plurality of gas inlet channels and a plurality of first gas dredging channels, the gas collecting channel and the gas distributing channels are arranged in parallel, the gas inlet channels penetrate through the gas collecting channel and are communicated with the gas distributing channels, the first gas dredging channels are communicated with the gas distributing channels and the converging grooves, the two die plates are combined together, and a melting cavity flow channel is formed between the two flow grooves;
air vents are respectively arranged on two sides of the spinneret orifice on the spinneret plate, the spinneret plate is arranged between the two templates, the air vents are communicated with the confluence grooves on the corresponding sides, and the first buffer groove is arranged below the air vents.
Further, the vent comprises a plurality of second gas evacuation channels, and the second gas evacuation channels penetrate through the spinneret plate.
Further, the inner diameter of the gas collection channel is larger than that of the gas distribution channel.
Furthermore, the lower surface of the air deflector is provided with a convex part, the spinneret orifice penetrates through the convex part, and the spinneret orifice of the spinneret orifice is positioned at the tip end of the convex part; the inner side part of the air deflector is provided with a notch structure, an inclined plane is formed on the inner side wall of the air deflector, the gap air cavity is formed between the inclined plane and the protruding part, and a pressurizing cavity is formed between the notch structure and the spinneret plate.
The utility model provides a melt-blown fabric spouts a mould, through setting up two dashpots on the aviation baffle, high-speed hot-air will cushion diffusion processing via two dashpots in proper order before entering into clearance air cavity output, because the length direction distribution of aviation baffle is all followed to two dashpots, and thus, alright distribute in order to make high-speed hot-air can be through the even length direction who follows the aviation baffle of two dashpots, it is even to give vent to anger in order to ensure length direction upper gap air cavity, realize that atmospheric pressure distributes evenly in order to satisfy the requirement of the balanced air feed of long-size mould, the production quality of melt-blown fabric has been improved.
Drawings
FIG. 1 is a schematic structural view of a melt-blown spinneret of the present invention;
FIG. 2 is a schematic view of a partial structure of a melt-blowing spinneret of the present invention;
fig. 3 is a second schematic view of a partial structure of the melt-blown spinning die of the present invention;
fig. 4 is a cross-sectional view of the melt-blown fiber spinning die of the present invention;
FIG. 5 is an enlarged view of a portion of area A of FIG. 4;
fig. 6 is a schematic structural view of the air deflector in the melt-blown spinneret of the present invention.
Detailed Description
As shown in fig. 1 to 6, the melt-blowing spinneret of the present embodiment includes: the die comprises a die body 1, a spinneret plate 2 and two air deflectors 3, wherein a melting cavity flow channel 101 is formed in the die body 1, a feed inlet 102 communicated with the melting cavity flow channel 101 is formed in the upper end face of the die body 1, and a strip-shaped discharge outlet 103 communicated with the melting cavity flow channel 101 is formed in the lower end face of the die body 1;
the spinneret plate 2 is provided with a plurality of spinneret orifices 20 which are arranged in a straight line, the spinneret plate 2 is arranged on the lower surface of the die body 1, and the spinneret orifices 20 are communicated with the discharge hole 103;
the two air deflectors 3 are arranged on the lower surface of the spinneret plate 2 and distributed on two sides of the spinneret orifice 20, a gap air cavity 200 is formed between the air deflectors 3 and the spinneret plate 2, a first buffer groove 31 and a second buffer groove 32 are arranged on the upper surface of the air deflectors 3, the second buffer groove 32 is located between the gap air cavity 200 and the first buffer groove 31, and high-speed hot air enters the second buffer groove 32 through the first buffer groove 31 and is output from the gap air cavity 200.
Specifically, the die body 1 in this embodiment is used to connect with an extruder through a feed port 102 to deliver a melt, which flows in a melt chamber channel 101 and is output from a discharge port 103 into a spinneret plate 2 and finally is ejected from a spinneret orifice 20. Meanwhile, the high-speed hot air output by the external air supply source enters the first buffer slot 31 for buffering treatment, so that the high-speed hot air can be effectively distributed along the length direction of the first buffer slot 31; while the high-speed hot air enters the first buffer groove 31 and is uniformly distributed, the high-speed hot air in the first buffer groove 31 enters the second buffer groove 32 under the action of air pressure, so that the high-speed hot air is further diffused by the second buffer groove 32, and the high-speed hot air can be uniformly distributed in the length direction of the die; finally, the high-speed hot air is transferred from the second buffer tank 32 into the gap air chamber 200 and is output. Since the first buffer groove 31 and the second buffer groove 32 are both distributed along the length direction of the die to meet the requirement of uniform distribution of gas, the high-speed hot air output from the gap air cavity 200 can uniformly draft the melt trickle output from the spinneret orifice 20 to form ultrafine fibers.
In order to facilitate uniform gas supply, the mold body 1 includes two mold plates 11, flow grooves 111 are formed in the inner surfaces of the mold plates 11, flow converging grooves 112 are formed in the lower surfaces of the mold plates 11, gas collecting channels 113, gas distributing channels 114, a plurality of gas inlet channels 115 and a plurality of first gas dispersing channels 116 are formed in the mold plates 11, the gas collecting channels 113 and the gas distributing channels 114 are arranged in parallel, the gas inlet channels 115 penetrate through the gas collecting channels 113 and are communicated with the gas distributing channels 114, the first gas dispersing channels 116 are communicated with the gas distributing channels 114 and the flow converging grooves 112, the two mold plates 11 are combined together, and a melting cavity flow channel 101 is formed between the two flow grooves 111; air vents 21 are respectively arranged on two sides of the spinneret plate 2 positioned at the spinneret orifices 20, the spinneret plate 2 is arranged between the two die plates 11, the air vents are communicated with the confluence grooves 112 on the corresponding sides, and the first buffer grooves 31 are positioned below the air vents.
Specifically, the air supply source is connected to the air inlet channels 115 through air channels 115 to supply high-speed hot air into the mold body 1 through the air inlet channels 115, and the high-speed hot air entering the mold plate 11 is gathered and distributed in the air collecting channel 113 and then enters the air distributing channel 114 through the first air distributing channels 116. Because the gas collecting channel 113 and the gas distributing channel 114 are both distributed along the length direction of the mold, the high-speed hot air delivered by the plurality of gas inlet channels 115 enters the mold and can be uniformly dispersed through the gas collecting channel 113, so that the high-speed hot air entering the gas distributing channel 114 is uniformly distributed. Finally, the air distribution passage 114 delivers the high-speed hot air into the confluence groove 112 through a plurality of first air distribution passages 116. The high-speed hot air in the confluence groove 112 enters between the air guide plate 3 and the spinneret plate 2 through the air vent 21 on the spinneret plate 2, and the high-speed hot air is output through the first buffer groove 31, the second buffer groove 32 and the gap air chamber 200.
For further uniform gas flow distribution, the vent 21 may include a plurality of second gas evacuation channels 211, and the second gas evacuation channels 211 may penetrate the spinneret plate 2.
In addition, the inner diameter of the gas collecting passage 113 is larger than that of the gas distributing passage 114. Thus, the gas collecting channel 113 with a larger inner diameter can be used for effectively buffering the impact of the gas flow during gas inlet so as to ensure uniform gas flow distribution.
Furthermore, a convex part 22 is arranged on the lower surface of the air deflector 3, the spinneret orifice 20 penetrates through the convex part 22, and the spinneret orifice of the spinneret orifice 20 is positioned at the tip end of the convex part 22; the inner side of the air deflector 3 is provided with a notch structure 33, the inner side wall of the air deflector 3 is provided with an inclined surface (not marked), a gap air cavity 200 is formed between the inclined surface and the bulge 22, and a pressurizing cavity is formed between the notch structure 33 and the spinneret plate 2. Specifically, the spinning position of the spinning hole 20 is formed on the protrusion 22 with a triangular cross section, and the high-speed hot air is output from the second buffer slot 32 and then enters the pressurizing cavity with a larger space, and the air in the pressurizing cavity enters the narrow gap air cavity 200, so that the gas output speed is effectively increased.
The utility model provides a melt-blown fabric spouts a mould, through setting up two dashpots on the aviation baffle, high-speed hot-air will cushion diffusion processing via two dashpots in proper order before entering into clearance air cavity output, because the length direction distribution of aviation baffle is all followed to two dashpots, and thus, alright distribute in order to make high-speed hot-air can be through the even length direction who follows the aviation baffle of two dashpots, it is even to give vent to anger in order to ensure length direction upper gap air cavity, realize that atmospheric pressure distributes evenly in order to satisfy the requirement of the balanced air feed of long-size mould, the production quality of melt-blown fabric has been improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. A melt-blowing die, comprising: the die comprises a die body, a spinneret plate and two air deflectors, wherein a melting cavity flow channel is formed in the die body, a feed inlet communicated with the melting cavity flow channel is formed in the upper end face of the die body, and a strip-shaped discharge outlet communicated with the melting cavity flow channel is formed in the lower end face of the die body; the spinneret plate is provided with a plurality of spinneret orifices which are arranged in a straight line, the spinneret plate is arranged on the lower surface of the die body, and the spinneret orifices are communicated with the discharge hole; the two air deflectors are arranged on the lower surface of the spinneret plate and distributed on two sides of the spinneret orifice, a gap air cavity is formed between the air deflectors and the spinneret plate, a first buffer groove and a second buffer groove are arranged on the upper surface of the air deflectors, the second buffer groove is located between the gap air cavity and the first buffer groove, and high-speed hot air enters the second buffer groove through the first buffer groove and is output from the gap air cavity.
2. The die of claim 1, wherein the die body comprises two die plates, the inner surfaces of the die plates are provided with flow grooves, the lower surfaces of the die plates are provided with collecting grooves, the die plates are provided with a gas collecting channel, a gas distributing channel, a plurality of gas inlet channels and a plurality of first gas dispersing channels, the gas collecting channel and the gas distributing channel are arranged in parallel, the gas inlet channels penetrate through the gas collecting channel and are communicated with the gas distributing channel, the first gas dispersing channels are communicated with the gas distributing channel and the collecting grooves, the two die plates are combined together, and the melt cavity flow channel is formed between the two flow grooves;
air vents are respectively arranged on two sides of the spinneret orifice on the spinneret plate, the spinneret plate is arranged between the two templates, the air vents are communicated with the confluence grooves on the corresponding sides, and the first buffer groove is arranged below the air vents.
3. The meltblown spinneret die according to claim 2 wherein said vent opening comprises a plurality of second gas venting channels extending through said spinneret plate.
4. The meltblown spinneret die according to claim 2 wherein the inner diameter of said gas collecting channel is greater than the inner diameter of said gas distributing channel.
5. The melt-blown fabric spinning die according to claim 2, wherein a raised part is arranged on the lower surface of the air deflector, the spinning holes penetrate through the raised part, and the spinning holes are positioned at the tips of the raised part; the inner side part of the air deflector is provided with a notch structure, an inclined plane is formed on the inner side wall of the air deflector, the gap air cavity is formed between the inclined plane and the protruding part, and a pressurizing cavity is formed between the notch structure and the spinneret plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022998378.9U CN214168198U (en) | 2020-12-15 | 2020-12-15 | Melt-blown fabric spinning die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022998378.9U CN214168198U (en) | 2020-12-15 | 2020-12-15 | Melt-blown fabric spinning die |
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| Publication Number | Publication Date |
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| CN214168198U true CN214168198U (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022998378.9U Active CN214168198U (en) | 2020-12-15 | 2020-12-15 | Melt-blown fabric spinning die |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802193A (en) * | 2021-10-27 | 2021-12-17 | 江南大学 | Solution jet spinning device and application thereof in preparation of nanofiber membrane |
| CN114182367A (en) * | 2021-11-24 | 2022-03-15 | 浙江科达包装机械厂 | Melt-blown die |
-
2020
- 2020-12-15 CN CN202022998378.9U patent/CN214168198U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802193A (en) * | 2021-10-27 | 2021-12-17 | 江南大学 | Solution jet spinning device and application thereof in preparation of nanofiber membrane |
| CN114182367A (en) * | 2021-11-24 | 2022-03-15 | 浙江科达包装机械厂 | Melt-blown die |
| CN114182367B (en) * | 2021-11-24 | 2023-03-10 | 浙江科达包装机械厂 | Melt-blown die |
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