CN117867758A - Melt-blown cloth receiving arrangement - Google Patents
Melt-blown cloth receiving arrangement Download PDFInfo
- Publication number
- CN117867758A CN117867758A CN202410120345.4A CN202410120345A CN117867758A CN 117867758 A CN117867758 A CN 117867758A CN 202410120345 A CN202410120345 A CN 202410120345A CN 117867758 A CN117867758 A CN 117867758A
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- China
- Prior art keywords
- receiving cylinder
- air
- receiving
- area
- melt
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- 239000004744 fabric Substances 0.000 title claims abstract description 78
- 239000007921 spray Substances 0.000 claims abstract description 8
- 238000001179 sorption measurement Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims 2
- 239000000155 melt Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Treatment Of Fiber Materials (AREA)
Abstract
The invention provides a melt-blown fabric receiving device, and belongs to the technical field of mask processing. The wind turbine comprises a frame, a receiving cylinder rotatably connected to the frame, a wind pipe positioned in the receiving cylinder and a cloth outlet guide roller rotatably connected to the frame, wherein a wind hole I and a wind hole II which are parallel to the receiving cylinder are formed in the wind pipe, a wind wheel I and a wind wheel II are rotatably connected to the wind hole I and the wind wheel II respectively, the wind wheel I and the wind wheel II are rotatably connected to the frame, an air inlet hopper I communicated with the wind hole I and an air outlet hopper I are formed in the wind pipe, and an air inlet hopper II communicated with the wind hole II and an air outlet hopper II are formed in the wind pipe; the receiving area is positioned right below the solution spray head; the air inlet hopper is aligned with the inner wall of the receiving cylinder corresponding to the receiving area, the air inlet hopper is aligned with the inner wall of the receiving cylinder corresponding to the adsorbing area, the air outlet hopper is aligned with the inner wall of the receiving cylinder corresponding to the stripping area, and the air inlet hopper is aligned with the inner wall of the receiving cylinder outside the melt-blown cloth coverage area on the receiving cylinder; the stripping area is the involute area for transferring the melt-blown fabric from the receiving cylinder to the fabric-discharging guide roller. The invention has the advantages of low maintenance cost and the like.
Description
Technical Field
The invention belongs to the technical field of mask processing, and relates to a melt-blown fabric receiving device.
Background
The melt-blown cloth is used as a main filter layer in the mask, and the processing principle is as follows: and (3) hot-melting the polypropylene melt-blown material, then, flocculating the melt-blown material on a receiving net, cooling the melt-blown material on the receiving net, and stripping the melt-blown material to draw out the melt-blown material. In the prior art, two sets of air conditioning systems are needed, one set is used for carrying out primary cooling and flow guiding on liquid state cotton filaments sprayed out by a spray head, the other set is used for carrying out vacuumizing (forming negative pressure difference with the outside) on the inside of a receiving cylinder, the receiving cylinder is a net cylinder, the negative pressure in the receiving cylinder is used for attaching melt-blown fabric before forming on the outer wall surface of the net cylinder, and meanwhile, the melt-blown fabric is further cooled.
In the prior art, the mesh-shaped receiving cylinder needs to be maintained regularly, because the negative pressure in the receiving cylinder causes aggregation of polypropylene flock, such as in a mesh hole of the receiving cylinder, in an air duct and the like, after a period of operation, the adsorption effect of the melt-blown fabric on the receiving net and the smoothness of the surface of the receiving cylinder are affected, meanwhile, the stability of the negative pressure value is disturbed, in addition, the problem that the separation of the melt-blown fabric from the receiving net after cooling and forming is not smooth is caused by the influence of the negative pressure in the receiving cylinder, the traction tension of the melt-blown fabric generally needs to be increased, and under the condition that the traction tension is constant, the adsorption force of the melt-blown fabric and the surface of the receiving cylinder has certain fluctuation, so that the traction tension of the melt-blown fabric and the traction speed have large fluctuation, and further the uniformity of the thickness of the melt-blown fabric (the rotating speed of the receiving cylinder is directly related to the thickness of the melt-blown fabric, the uneven stretching caused by the fluctuation of the traction tension or the sliding on the receiving cylinder can also affect the thickness of the melt-blown fabric), and the fluctuation of the traction tension is caused by the stripping of the receiving cylinder.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems of the prior art, and provides a meltblown receiving apparatus, which is to solve the technical problem of how to reduce the maintenance cost of the receiving apparatus.
The aim of the invention can be achieved by the following technical scheme: the melt-blown cloth receiving device is characterized by comprising a frame, a receiving cylinder rotationally connected to the frame, an air pipe positioned in the receiving cylinder and a cloth outlet guide roller rotationally connected to the frame, wherein an air hole I and an air hole II which are parallel to the receiving cylinder are formed in the air pipe, the air hole I and the air hole II are rotationally connected with a wind wheel I and a wind wheel II respectively, the wind wheel I and the wind wheel II are rotationally connected to the frame, an air inlet hopper I and an air outlet hopper I which are communicated with the air hole I are formed in the air pipe, and an air inlet hopper II and an air outlet hopper II which are communicated with the air hole II are formed in the air pipe; the melt-blown cloth covering area on the receiving cylinder is sequentially divided into a receiving area, an adsorption area, a wrapping area and a stripping area along the rotating direction of the receiving cylinder, wherein the receiving area is positioned under the solution spray head; the first air inlet hopper is aligned with the inner wall of the receiving cylinder corresponding to the receiving area, the second air inlet hopper is aligned with the inner wall of the receiving cylinder corresponding to the adsorbing area, the second air outlet hopper is aligned with the inner wall of the receiving cylinder corresponding to the stripping area, and the first air inlet hopper is aligned with the inner wall of the receiving cylinder outside the coverage area of the melt-blown cloth on the receiving cylinder; the stripping area is an involute area for transferring the melt-blown fabric from the receiving cylinder to the fabric discharging guide roller.
Further, the first wind wheel and the second wind wheel are respectively controlled by a motor.
Further, the outlet of the first air outlet hopper is smaller than the inlet of the first air inlet hopper.
Further, the stripping zone is located below the horizontal plane of the receiving cylinder axis.
Further, an air outlet duct which is positioned outside the receiving cylinder and is opposite to the air outlet hopper I is arranged on the frame.
The first wind wheel and the second wind wheel are arranged in the receiving cylinder, so that low-temperature air flow is generated in the receiving area when the first wind wheel rotates to further cool the flocculation flow sprayed by the spray head, in the process that the receiving cylinder rotates slowly and uniformly, the preliminarily molded melt-blown fabric reaches the adsorption area, namely the air inlet position of the second wind wheel, so that the preliminarily molded melt-blown fabric forms adsorption force on the receiving cylinder, then the melt-blown fabric enters the wrapping area, the wrapping area is not interfered by air flow, and the friction resistance of the melt-blown fabric on the receiving cylinder is increased, so that the melt-blown fabric acts on the melt-blown fabric at the adsorption area under the action of traction force, and the melt-blown fabric at the position is not fully cooled and shaped, so that the stretching can influence the uniformity of the thickness of the melt-blown fabric with molding quality; the melt-blown cloth starts to leave the receiving cylinder after passing through the wrapping area, and is transferred to the cloth outlet guide roller to enter the subsequent traction cutting system, the melt-blown cloth at the moment is completely cold-formed, so that the melt-blown cloth can be conveniently and smoothly separated from the receiving cylinder without tearing the melt-blown cloth, the air outlet hopper II corresponding to the air outlet of the wind wheel II is aligned with the stripping area, a certain air flow pressure is generated on the receiving cylinder from inside to outside, the resistance of the melt-blown cloth separated from the receiving roller is reduced, the stripping stability of the melt-blown cloth is improved, and the adverse effect of the stripping resistance fluctuation on cloth traction and cloth flatness is avoided.
In addition, because the air outlet hopper II corresponding to the air outlet position of the air wheel I is aligned to a position outside the coverage area of the melt-blown cloth on the receiving cylinder, the aperture of the outlet is relatively smaller, and relatively larger air flow can be generated, the air outlet hopper II is the back flushing of the non-coverage area of the receiving roller, the cleaning of meshes of the receiving roller is ensured, and the dust generated by back flushing and the back flushing air flow are led out by the air outlet guide pipe, namely, the receiving roller can realize maintenance-free or large-period maintenance.
Drawings
FIG. 1 is a schematic view of the structure of the present meltblown receiving apparatus.
Fig. 2 is a cross-sectional view of the receiving cylinder.
FIG. 3 is a schematic view of a prior art meltblown receiving process.
In the figure, 1, a rack; 2. a receiving cylinder; 3. an air duct; 31. a first wind hole; 32. a second wind hole; 33. a wind wheel I; 34. a wind wheel II; 35. an air inlet hopper I; 36. an air outlet hopper I; 37. an air inlet hopper II; 38. an air outlet hopper II; 4. a cloth outlet guide roller; 5. an air outlet duct; a. a receiving area; b. an adsorption zone; c. a wrapping area; d. and a peeling region.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
The melt-blown fabric receiving device shown in fig. 1 and 2 comprises a frame 1, a receiving cylinder 2 rotatably connected to the frame 1, an air pipe 3 positioned in the receiving cylinder 2 and a fabric outlet guide roller 4 rotatably connected to the frame 1, wherein an air hole I31 and an air hole II 32 which are parallel to the receiving cylinder 2 are formed in the air pipe 3, an air wheel I33 and an air wheel II 34 are rotatably connected to the air hole II 32 respectively, the air wheel I33 and the air wheel II 34 are rotatably connected to the frame 1, an air inlet hopper I35 and an air outlet hopper I36 which are communicated with the air hole I31 are formed in the air pipe 3, and an air inlet hopper II 37 and an air outlet hopper II 38 which are communicated with the air hole II 32 are formed in the air pipe 3; along the rotation direction of the receiving cylinder 2, the covering area of the melt-blown cloth on the receiving cylinder 2 is sequentially divided into a receiving area a, an adsorption area b, a wrapping area c and a stripping area d, wherein the receiving area a is positioned under the solution spray head; the first air inlet hopper 35 is aligned with the inner wall of the receiving cylinder 2 corresponding to the receiving area a, the second air inlet hopper 37 is aligned with the inner wall of the receiving cylinder 2 corresponding to the adsorption area b, the second air outlet hopper 38 is aligned with the inner wall of the receiving cylinder 2 corresponding to the stripping area d, and the first air inlet hopper 35 is aligned with the inner wall of the receiving cylinder 2 outside the coverage area of the melt-blown cloth on the receiving cylinder 2; the stripping zone d is the involute zone of the meltblowing roll 4 from the receiving cylinder 2.
The first wind wheel 33 and the second wind wheel 34 are respectively controlled by a motor, so that the rotating speeds of the first wind wheel 33 and the second wind wheel 34 can be independently controlled.
The outlet of the first air outlet hopper 36 is smaller than the inlet of the first air inlet hopper 35, so that strong air flow which is used for reversely cleaning and dredging the receiving cylinder 2 is formed at the first air outlet hopper 36.
The stripping zone d is located below the level of the receiving cylinder 2 axis, as compared to the prior art, which is shown in fig. 3, where the meltblown web is separated farther forward, whereby the meltblown web is subjected to traction tension in the area that is not fully formed.
The frame 1 is provided with an air outlet conduit 5 which is positioned outside the receiving cylinder 2 and is opposite to the air outlet hopper I36, and backwashed impurities are discharged.
By arranging the first wind wheel 33 and the second wind wheel 34 in the receiving cylinder 2, when the first wind wheel 33 rotates, low-temperature air flow is generated to the receiving area a so as to further cool the wadding flow sprayed by the spray head, in the process of slowly rotating the receiving cylinder 2 at a uniform speed, the preliminarily molded melt-blown fabric reaches the adsorption area b, wherein the air inlet position of the second wind wheel 34 rotates, so that the preliminarily molded melt-blown fabric forms adsorption force on the receiving cylinder 2, then the melt-blown fabric enters the wrapping area c, the wrapping area c has no air flow to interfere with the melt-blown fabric, the friction resistance of the melt-blown fabric on the receiving cylinder 2 is increased, so that the melt-blown fabric at the position acts on the melt-blown fabric at the adsorption area b due to incomplete cooling and shaping of the melt-blown fabric at the position, and the stretching can influence the uniformity of the thickness of the melt-blown fabric at the molding quality; after passing through the wrapping area c, the melt-blown fabric starts to leave the receiving cylinder 2 and is transferred to the fabric outlet guide roller 4 to enter a subsequent traction cutting system, and the melt-blown fabric is completely cold-formed at the moment, so that the melt-blown fabric is conveniently and smoothly separated from the receiving cylinder 2 and is not torn off, the air outlet hopper II 38 corresponding to the air outlet of the air wheel II 34 is aligned with the stripping area d, a certain air flow pressure is generated on the receiving cylinder 2 from inside to outside, the resistance of the melt-blown fabric separating from the receiving roller is reduced, the stripping stability of the melt-blown fabric is improved, and the adverse effect of the stripping resistance fluctuation on fabric traction and fabric flatness is avoided.
In addition, as the air outlet hopper II 38 corresponding to the air outlet position of the first wind wheel 33 is aligned to a position outside the melt-blown cloth coverage area on the receiving cylinder 2, the outlet caliber of the air outlet hopper II is relatively smaller, and relatively larger air flow can be generated, the air outlet hopper II is back flushing of the non-coverage area of the receiving roller, the cleaning of meshes of the receiving roller is ensured, and scraps generated by back flushing and back flushing air flow are led out by the air outlet guide pipe 5, namely the receiving roller can realize maintenance-free or large-period maintenance; furthermore, the resistance of the melt-blown fabric from the receiving cylinder 2 is derived from the absorption force of the melt-blown fabric part of the filament to be embedded into the mesh of the receiving cylinder 2 in the receiving process, in the scheme, in the stripping area d, the hot air flow for cooling the melt-blown fabric is adopted to reversely blow and strip the melt-blown fabric, so that the filament embedded into the mesh of the melt-blown fabric can be combed, and a certain amount of heat can be provided to enable the filament to be separated from the mesh of the receiving cylinder 2 more easily.
As shown in FIG. 1, the nozzle sprays the flocculation liquid onto the receiving cylinder 2, two sides of the nozzle are respectively provided with a blast pipe 3 for guiding and cooling the flocculation liquid, in the prior art shown in FIG. 3, the interior of the receiving cylinder 2 is directly vacuumized, the receiving cylinder 2 only has the air flow from outside to inside, the air flow from outside to inside does not exist, the meshes are easy to be blocked, in addition, the coverage area of the melt-blown fabric on the receiving cylinder 2 in the prior art is subjected to negative pressure effect, and the stripping resistance is large.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The melt blowing cloth receiving device is characterized by comprising a frame (1), a receiving cylinder (2) rotatably connected to the frame (1), an air pipe (3) positioned in the receiving cylinder (2) and a cloth outlet guide roller (4) rotatably connected to the frame (1), wherein an air hole I (31) and an air hole II (32) which are parallel to the receiving cylinder (2) are arranged in the air pipe (3), an air wheel I (33) and an air wheel II (34) are rotatably connected to the air hole II (32) respectively, the air wheel I (33) and the air wheel II (34) are rotatably connected to the frame (1), an air inlet hopper I (35) communicated with the air hole I (31) and an air outlet hopper I (36) are arranged on the air pipe (3), and an air inlet hopper II (37) and an air outlet hopper II (38) communicated with the air hole II (32) are arranged on the air pipe (3); the method comprises the following steps that along the rotation direction of a receiving cylinder (2), a melt-blowing cloth covering area on the receiving cylinder (2) is sequentially divided into a receiving area (a), an adsorption area (b), a wrapping area (c) and a stripping area (d), wherein the receiving area (a) is positioned under a solution spray head; the first air inlet hopper (35) is aligned with the inner wall of the receiving cylinder (2) corresponding to the receiving area (a), the second air inlet hopper (37) is aligned with the inner wall of the receiving cylinder (2) corresponding to the adsorption area (b), the second air outlet hopper (38) is aligned with the inner wall of the receiving cylinder (2) corresponding to the stripping area (d), and the first air inlet hopper (35) is aligned with the inner wall of the receiving cylinder (2) outside the coverage area of the melt-blown cloth on the receiving cylinder (2); the stripping zone (d) is an involute zone in which the melt-blown fabric is transferred from the receiving cylinder (2) to the fabric outlet guide roller (4).
2. A meltblown receiving device according to claim 1, wherein said first rotor (33) and second rotor (34) are each controlled by a motor.
3. The meltblown web receiving device of claim 1, wherein the outlet of the first wind scoop (36) is smaller than the inlet of the first wind scoop (35).
4. A meltblown receiving device according to claim 1, 2 or 3, characterized in that the stripping zone (d) is located below the level of the axis of the receiving cylinder (2).
5. A meltblown fabric receiving device according to claim 1, 2 or 3, characterized in that the frame (1) is provided with an air outlet duct (5) located outside the receiving drum (2) and facing the air outlet hopper one (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410120345.4A CN117867758A (en) | 2024-01-26 | 2024-01-26 | Melt-blown cloth receiving arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410120345.4A CN117867758A (en) | 2024-01-26 | 2024-01-26 | Melt-blown cloth receiving arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117867758A true CN117867758A (en) | 2024-04-12 |
Family
ID=90577396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410120345.4A Pending CN117867758A (en) | 2024-01-26 | 2024-01-26 | Melt-blown cloth receiving arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117867758A (en) |
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2024
- 2024-01-26 CN CN202410120345.4A patent/CN117867758A/en active Pending
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