An electrospinning nanofiber mask preparation device

Abstract

The present invention discloses an electrostatic spinning nanofiber mask preparation device, comprising a workbench, a discharge roller and a take-up roller being provided on the upper side of the workbench, a shearing device being provided between the discharge roller and the take-up roller, the shearing device comprising a vertical plate, the upper side of the vertical plate being fixedly connected to a horizontal plate, the horizontal plate being provided with a downward pressure cylinder, the lower end of the telescopic rod of the downward pressure cylinder being fixedly connected to a flat plate, the bottom of the flat plate being horizontally slidably connected to a slider, the bottom of the slider being provided with a cutting die, the vertical plate being rotatably connected to a reference shaft, the reference shaft being provided with at least two support rods; the upper end of each support rod being rotatably connected to a support rod, the rotation shaft of the support rod being provided with a torsion spring, the end of the support rod being fixedly connected to a bearing die, the bottom of the bearing die being provided with an air cylinder. The present invention uses negative pressure adsorption and a pulling rod to perform a pushing and blowing action, thereby facilitating detachment without requiring an air source or complex air path arrangement, thereby improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mask production, and in particular to a device for preparing an electrostatic spinning nanofiber mask. Background Art

[0002] Traditional masks generally use melt-blown polypropylene that has been treated with electret as the filter material. This filter membrane uses the principle of electrostatic adsorption and uses electrostatic attraction to adsorb particulate matter. The interception efficiency of this filter membrane will drop rapidly as the electrostatic attraction fades. In addition, the pore size of polypropylene melt-blown cloth is large, and it is often necessary to increase the usage and increase the thickness of the filter membrane to achieve the interception effect, which results in a decrease in air permeability and reduces the comfort of wearing.

[0003] In the prior art, there is an electrospinning nanofiber mask preparation device with patent application number CN202120111382.0, which includes a base plate, a support frame, a first cylinder, a cutting die, a rotation component and a combined stretching structure. The rotation component is installed in the middle of the top side of the base plate, and the combined stretching structure is respectively arranged at the two ends of the top side of the base plate. The cutting die is pressed down by the first cylinder. During the pressing process of the cutting die, cutting is performed by a cutting knife. With the cooperation of a hot melt knife, synchronous packaging can be achieved and one-time molding can be realized.

[0004] In the mask cutting device of the above-mentioned prior art, the cutting mold is likely to cause the mask to be lifted up together after being lifted. When the mask needs to be discharged, it is only through the blowing action of the cylinder, which requires a precise controller to control the action and has a high failure rate. At the same time, the cylinder adsorption or blowing is easy to occur due to the single airflow contact point. If the edge of the mask is adhered, a large separation force is required, which can easily cause the mask to be partially deformed by blowing. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and propose an electrospinning nanofiber mask preparation device to solve the problems existing in the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An electrospinning nanofiber mask preparation device includes a workbench, a feed roll and a take-up roll are provided on the upper side of the workbench, a shearing device is provided between the feed roll and the take-up roll, the shearing device includes a vertical plate, the upper side of the vertical plate is fixedly connected to a horizontal plate, the horizontal plate is provided with a downward pressure cylinder, the lower end of the telescopic rod of the downward pressure cylinder is fixedly connected to the flat plate, the bottom of the flat plate is horizontally slidably connected to a slider, the bottom of the slider is installed with a cutting die, a buffer spring is installed between the slider and the cutting die, the vertical plate is rotatably connected to a reference shaft, and the reference shaft is provided with at least two support rods;

[0008] The upper end of each support rod is rotatably connected to a support rod, and a torsion spring is installed on the rotating shaft of the support rod. The end of the support rod is fixedly connected to the load-bearing mold, and an air cylinder is fixed to the bottom of the load-bearing mold. A pull rod is installed on the air cylinder, and a round rod is provided on one side of the pull rod. The vertical plate is fixedly connected to a circular ring, and the circular ring is coaxial with the reference axis. One side of the circular ring is fixedly connected to the first arc block and the second arc block. The outer arc surface of the first arc block is set toward the reference axis, and the outer arc surface of the second arc block is set outward. The round rod can slide to the outer arc surface of the first arc block or the second arc block.

[0009] Preferably, a slide groove is provided at the bottom of the flat plate, a slider is slidably connected in the slide groove, and a support spring is fixedly connected between the slider and the end of the slide groove.

[0010] Preferably, a guide rod is fixedly connected in the sliding groove, the sliding block is provided with an avoidance hole, the guide rod passes through the avoidance hole, and the guide rod passes through the inside of the support spring.

[0011] Preferably, the air cylinder is fixedly connected to a cross bar, the cross bar is provided with a guide hole, the pull rod is slidably connected to the guide hole, the air cylinder is slidably connected to a piston, the piston is fixedly connected to the pull rod, and a first spring is fixedly connected between the piston and the cross bar.

[0012] Preferably, the end of the round rod is rotatably connected to a rolling column, and the rolling column can roll to the outer arc surface of the first arc block or the second arc block.

[0013] Preferably, a plurality of mounting holes are provided at the bottom of the forming groove of the supporting mold, a communicating air path is provided between each mounting hole and the air cylinder, a cover plate is provided in each mounting hole, and a plurality of exhaust holes are evenly provided on each cover plate.

[0014] Preferably, the bottom of the cover plate is fixedly connected to the push rod.

[0015] Preferably, the bottom of the push rod is fixedly connected to a baffle, and a counterweight is installed in the baffle.

[0016] Preferably, the upper side of the baffle is fixedly connected to a buffer ring.

[0017] Preferably, the buffer ring is a foam pad or a rubber pad.

[0018] Preferably, a conveyor belt is installed on the workbench.

[0019] The advantages of the present invention are as follows: the electrostatic spinning nanofiber mask preparation device provided by the present invention is driven by the servo motor behind the vertical plate to rotate the workstation, first the supporting mold is rotated to the bottom of the axis of the downward pressure cylinder, then the cutting mold is pressed down and extends into the molding cavity of the supporting mold to cut out the mask sheet, at this time the buffer spring is in a compressed state; in order to prevent the mask sheet from being taken out together during the lifting of the cutting mold, the reference axis then rotates the combined cutting mold and the supporting mold together at an angle, during the rotation process, the buffer spring pushes the cutting mold downward and contacts the cutting mold during the horizontal sliding of the cutting mold, during this process, the round rod acts on The outer arc surface of the first arc block enables the pull rod to pull down and evacuate air, and in this process, the cutting mold is lifted, and the contact surface between the mask sheet and the molding cavity of the supporting mold is adsorbed by negative pressure, thereby avoiding the mask sheet being brought out when the cutting mold is lifted off, thereby improving stability, and using this operation method, it is only necessary to control the servo motor to rotate an additional angle, making the control method simple, thereby improving the stability of operation; and finally when the supporting mold of the workstation rotates to the bottom, the round rod acts on the outer arc surface of the second arc block, causing the pull rod to push and blow air, thereby facilitating separation, without providing an air source and complex air path arrangement, thereby improving work efficiency.

[0020] The present invention uses multi-point distributed small exhaust holes to avoid adsorption so that the mask sheet is adsorbed into the exhaust holes. On the other hand, when the cut supporting mold is rotated to the bottom, on the one hand, air is blown to make the mask sheet fall off. On the other hand, the push rod exposes the mounting hole of the cover plate under the action of the gravity of the baffle, so that the mounting hole is exposed, which together facilitates the falling of the mask sheet, thereby avoiding adhesion and improving the efficiency of the mask sheet falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a basic structural diagram of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the shearing device of the present invention;

[0023] Figure 3 This is a schematic diagram of the cutting working state of the shearing device of the present invention;

[0024] Figure 4 yes Figure 3 A local enlarged view of point E in FIG;

[0025] Figure 5 yes Figure 3 A local enlarged view of point F in FIG.

[0026] Figure 6 It is a schematic diagram of the connection structure between the bearing mold and the air cylinder of the present invention;

[0027] Figure 7 yes Figure 6 A local enlarged view of point M in the figure. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] Example 1

[0030] like Figure 1-6 As shown, the present invention provides an electrospinning nanofiber mask preparation device, including a workbench 1, on which a conveyor belt 11 is installed for transmitting the cut mask sheet. A discharge roller 10 and a take-up roller 8 are provided on the upper side of the workbench 1. The discharge roller 10 is provided with multiple feed rollers for providing different types of raw material layers. A shearing device 2 is provided between the discharge roller 10 and the take-up roller 8. The multiple layers of raw materials on the feed roller are collected on the shearing device 2 and cut by a cutting knife. With the cooperation of the hot melt knife, synchronization can be achieved. The packaging realizes one-time molding, and the three-layer side materials do not need to be assembled and cut again. The shearing device 2 includes a vertical plate 21, the upper side of the vertical plate 21 is fixedly connected to the horizontal plate 22, and the horizontal plate 22 is provided with a downward pressure cylinder 23. The lower end of the telescopic rod of the downward pressure cylinder 23 is fixedly connected to the flat plate 24. The bottom of the flat plate 24 is horizontally slidably connected to the slider 25. The bottom of the slider 25 is installed with a cutting die 26. A buffer spring is installed between the slider 25 and the cutting die 26. The vertical plate 21 is rotatably connected to the reference shaft 27, and the reference shaft 27 is provided with at least two support rods 28.

[0031] A square hole is provided at the upper end of the cutting die 26 , the slider 25 extends into the square hole and is slidably connected, and a buffer spring is fixedly connected to the lower end of the slider 25 and the upper side of the cutting die 26 .

[0032] The upper end of each support rod 28 is rotatably connected to a support rod 29, and a torsion spring 291 is installed on the rotating shaft of the support rod 29. The end of the support rod 29 is fixedly connected to the load-bearing mold 3, and an air cylinder 31 is fixed to the bottom of the load-bearing mold 3. A pull rod 32 is installed on the air cylinder 31, and a round rod 33 is provided on one side of the pull rod 32. The vertical plate 21 is fixedly connected to a circular ring 34, and the circular ring 34 is coaxial with the reference axis 27. One side of the circular ring 34 is fixedly connected to the first arc block 35 and the second arc block 36. The outer arc surface of the first arc block 35 is set toward the reference axis 27, and the outer arc surface of the second arc block 36 is set outward. The round rod 33 can slide to the outer arc surface of the first arc block 35 or the second arc block 36.

[0033] The reference shaft 27 is driven by the servo motor behind the vertical plate 21 to rotate the workstation. First, the supporting mold 3 is rotated to the position just below the axis of the pressing cylinder 23. Then the cutting mold 26 is pressed down and extends into the molding cavity of the supporting mold 3 to cut out the mask sheet. At this time, the buffer spring is in a compressed state. In order to prevent the mask sheet from being taken out together during the lifting of the cutting mold 26, the reference shaft 27 then rotates the combined cutting mold 26 and the supporting mold 3 together at an angle. During the rotation, the buffer spring pushes the cutting mold 26 downward and contacts the cutting mold 26 during the horizontal sliding of the cutting mold 26. During this process, the round rod 33 acts on the outer arc of the first arc block 35. The surface is formed so that the pulling rod 32 is pulled down and the air is extracted, and in this process, the cutting die 26 is lifted, and the contact surface between the mask sheet and the molding cavity of the supporting die 3 is adsorbed by negative pressure, thereby avoiding that the mask sheet is brought out when the cutting die 26 is lifted and detached, thereby improving stability, and adopting this operation mode, it is only necessary to control the servo motor to rotate an additional angle, so that the control mode is simple, thereby improving the stability of operation; and finally when the supporting die 3 of the workstation rotates to the bottom, the round rod 33 acts on the outer arc surface of the second arc block 36, so that the pulling rod 32 is pushed and blown, thereby facilitating separation, without providing an air source and a complex air path arrangement, thereby improving work efficiency.

[0034] A slide groove 241 is provided at the bottom of the flat plate 24, and a slider 25 is slidably connected in the slide groove 241. A support spring 242 is fixedly connected between the slider 25 and the end of the slide groove 241. A guide rod 243 is fixedly connected in the slide groove 241. The slider 25 is provided with an avoidance hole, and the guide rod 243 passes through the avoidance hole. The guide rod 243 passes through the inside of the support spring 242; it provides the ability to guide and support the reset of the horizontal sliding of the slider 25, and has strong adaptability.

[0035] The air cylinder 31 is fixedly connected to the cross bar 311 inside, and the cross bar 311 is provided with a guide hole. The pull rod 32 is slidably connected to the guide hole. The piston 312 is slidably connected to the air cylinder 31, and the piston 312 is fixedly connected to the pull rod 32. The first spring 313 is fixedly connected between the piston 312 and the cross bar 311. The end of the round rod 33 is rotatably connected to the rolling column 331, and the rolling column 331 can roll to the outer arc surface of the first arc block 35 or the second arc block 36; when the rolling column 331 rolls to the outer arc surface of the first arc block 35 or the second arc block 36 in the gap, it reduces friction, making the equipment run more smoothly.

[0036] Example 2

[0037] like Figure 1-7As shown, on the basis of Example 1, in order to avoid the adverse effects of the local blowing-adsorption effect of the mask sheet, a plurality of mounting holes 4 are provided at the bottom of the molding groove of the supporting mold 3, and a connecting air path 41 is provided between each mounting hole 4 and the air cylinder 31. A cover plate 42 is provided in each mounting hole 4, and a plurality of exhaust holes 43 are evenly arranged on each cover plate 42; through the arrangement of multiple exhaust holes 43, the air pressure is evenly applied to the mask sheet.

[0038] Furthermore, the bottom of the cover plate 42 is fixedly connected to a push rod 44, the bottom of the push rod 44 is fixedly connected to a baffle 45, a counterweight is installed in the baffle 45, and the upper side of the baffle 45 is fixedly connected to a buffer ring 46, which is a foam pad or a rubber pad.

[0039] On the one hand, the multi-point distributed small exhaust holes 43 are used to avoid adsorption so that the mask sheet is adsorbed into the exhaust holes. On the other hand, when the cut supporting mold 3 is rotated to the bottom, the mask sheet is dropped by blowing. On the other hand, the push rod 44 is used to expose the mounting hole 42 of the cover plate under the action of gravity of the baffle 45, so that the mounting hole 4 is exposed, which facilitates the dropping of the mask sheet, thereby avoiding adhesion and improving the efficiency of the mask sheet dropping.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An electrostatic spinning nanofiber mask preparation device, comprising a workbench (1), wherein a feeding roller (10) and a receiving roller (8) are provided on the upper side of the workbench (1), a shearing device (2) is provided between the feeding roller (10) and the receiving roller (8), the shearing device (2) comprising a vertical plate (21), the upper side of the vertical plate (21) is fixedly connected to a horizontal plate (22), the horizontal plate (22) is provided with a downward pressure cylinder (23), the lower end of the telescopic rod of the downward pressure cylinder (23) is fixedly connected to a flat plate (24), the bottom of the flat plate (24) is horizontally slidably connected to a slider (25), a cutting die (26) is installed at the bottom of the slider (25), a buffer spring is installed between the slider (25) and the cutting die (26), the vertical plate (21) is rotatably connected to a reference shaft (27), and the reference shaft (27) is provided with at least two support rods (28); Its characteristics are: The upper end of each support rod (28) is rotatably connected to a support rod (29), and a torsion spring (291) is installed on the rotation axis of the support rod (29). The end of the support rod (29) is fixedly connected to the bearing mold (3), and an air cylinder (31) is fixed to the bottom of the bearing mold (3). A pull rod (32) is installed on the air cylinder (31), and a round rod (33) is provided on one side of the pull rod (32). The vertical plate (21) is fixedly connected to a circular ring (34), and the circular ring (34) is coaxial with the reference axis (27). One side of the circular ring (34) is fixedly connected to a first arc block (35) and a second arc block (36). The outer arc surface of the first arc block (35) is set toward the reference axis (27), and the outer arc surface of the second arc block (36) is set outward. The round rod (33) can slide to the outer arc surface of the first arc block (35) or the second arc block (36).

2. The electrospinning nanofiber mask preparation device according to claim 1, characterized in that: A sliding groove (241) is provided at the bottom of the flat plate (24), a slider (25) is slidably connected in the sliding groove (241), and a support spring (242) is fixedly connected between the slider (25) and the end of the sliding groove (241).

3. The electrospinning nanofiber mask preparation device according to claim 2, characterized in that: The guide rod (243) is fixedly connected in the sliding groove (241), the sliding block (25) is provided with an avoidance hole, the guide rod (243) passes through the avoidance hole, and the guide rod (243) passes through the inside of the support spring (242).

4. The electrospinning nanofiber mask preparation device according to claim 2, characterized in that: The air cylinder (31) is fixedly connected to a cross bar (311) inside, the cross bar (311) is provided with a guide hole, the pull rod (32) is slidably connected to the guide hole, the air cylinder (31) is slidably connected to a piston (312), the piston (312) is fixedly connected to the pull rod (32), and a first spring (313) is fixedly connected between the piston (312) and the cross bar (311).

5. The electrospinning nanofiber mask preparation device according to claim 2, characterized in that: The end of the round rod (33) is rotatably connected to the rolling column (331), and the rolling column (331) can roll to the outer arc surface of the first arc block (35) or the second arc block (36).

6. The electrospinning nanofiber mask preparation device according to claim 2, characterized in that: A plurality of mounting holes (4) are provided at the bottom of the forming groove of the bearing mold (3), a communicating air path (41) is provided between each mounting hole (4) and the air cylinder (31), a cover plate (42) is provided in each mounting hole (4), and a plurality of exhaust holes (43) are evenly provided on each cover plate (42).

7. The electrospinning nanofiber mask preparation device according to claim 6, characterized in that: The bottom of the cover plate (42) is fixedly connected to a push rod (44), and the bottom of the push rod (44) is fixedly connected to a baffle (45), wherein a counterweight block is installed in the baffle (45).

8. The electrospinning nanofiber mask preparation device according to claim 7, characterized in that: The upper side of the baffle (45) is fixedly connected to a buffer ring (46).

9. The electrospinning nanofiber mask preparation device according to claim 8, characterized in that: The buffer ring (46) is a foam pad or a rubber pad.

10. An electrospinning nanofiber mask preparation device according to any one of claims 1 to 9, characterized in that: A conveyor belt (11) is installed on the workbench (1).

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