A coaxial electrospinning device for preparing hydrogel nanofiber membrane

Abstract

The present invention provides a coaxial electrostatic spinning device for preparing hydrogel nanofiber membrane, which belongs to the technical field of electrostatic spinning and comprises a table frame component, a flip-type winding assembly, a cutting assembly, an elastic frame component, a flip transmission component, a side guide frame component and a stripping insert component. The flip plate is screwed on one side of the table frame component, and cooperates with the avoidance arc surface, the outward push arc surface and the return arc surface in the side guide frame component to form a curved surface, which can form a guiding match with the inner side edge of the cutting tooth belt, so that the cutting blade will not interfere with the flipping process of the winding drum, and can also form a cutting action when the winding drum is flipped to the cutting station; and after the telescopic electric cylinder drives the winding drum to flip into place, the transmission mechanism can just drive the elastic upward top connecting plate to move downward, so that the top rotating bevel gear forms a meshing between the side bevel gear and the driving bevel gear, so that the cutting action can be safely performed, and the stripping insert component is used to complete the nanofiber membrane stripping work of the flipped winding drum.

Description

Technical Field

[0001] The invention relates to the technical field of electrostatic spinning, and in particular to a coaxial electrostatic spinning device for preparing a hydrogel nanofiber membrane. Background Art

[0002] Hydrogel nanofiber membranes are a relatively new class of nanomaterials in which hydrogels are structured in the form of nanofibers. The structure and size of the material directly control its functionality, which combines the properties of hydrogels and nanofibers, such as flexibility, soft consistency, elasticity, and biocompatibility.

[0003] Currently, combining the properties of hydrogels and nanofibers in one system can be applied in areas such as drug delivery, wound dressing, photoluminescence, waterproof and breathable membranes, and enzyme immobilization.

[0004] Electrospinning is a special process for manufacturing hydrogel nanofibers. The polymer solution or melt is jet-spun in a strong electric field. Under the action of the electric field, the droplet at the needle tip changes from a sphere to a cone, and extends from the tip of the cone to obtain fiber filaments. This method can produce polymer filaments with nanometer diameters, which are eventually solidified into fibers. Subsequently, the solidified fiber membrane needs to be cut manually along a straight line using a blade, and peeled off from both ends of the incision to separate the nanofiber membrane from the winding drum, thus completing the collection of the prepared nanofiber membrane. This has the disadvantages of cumbersome operation, difficult peeling, and time-consuming. Summary of the invention

[0005] The purpose of the present invention is to provide a coaxial electrospinning device for preparing hydrogel nanofiber membranes, which is based on a flip plate, and a cutting assembly and an elastic frame component are arranged on one side of the table frame component, and the telescopic electric cylinder and the elastic frame component are connected by a flip transmission component, so that the cutting toothed belt can be effectively driven after the winding drum is flipped into place, and in conjunction with the use of the side guide frame component, the cutting blade can form a cutting station while the process of flipping the winding drum to the cutting station can be avoided, thereby achieving the purpose of safe flipping and safe cutting.

[0006] The object of the present invention is achieved through such a technical solution, a coaxial electrostatic spinning device for preparing a hydrogel nanofiber membrane, comprising a table frame component, a flip-type winding assembly, a cutting assembly, a spring frame component, a flip transmission component and a side guide frame component, the flip-type winding assembly comprises a flip plate, a winding drum and a telescopic electric cylinder, the cutting assembly comprises a cutting toothed belt and a cutting blade, the spring frame component comprises a top rotating bevel gear, the flip transmission component comprises a side connecting rod, and the side guide frame component comprises a guide frame;

[0007] One side of the bottom end of the flip plate is screwed to one side of the top end of the table frame member, the winding drum is screwed to the middle of the top end of the flip plate, the bottom end of the main body of the telescopic electric cylinder is screwed to the bottom end of the table frame member, and the top end of the telescopic rod of the telescopic electric cylinder is screwed to the other side of the bottom end of the flip plate;

[0008] The cutting toothed belt is laterally located at the upper end of one side of the table frame component, and the cutting blade is fixedly arranged on the inner side edge of the cutting toothed belt. A side bevel gear is screwed to the middle part of the lower end of one side of the table frame component, and the side bevel gear is transmission-connected to the cutting toothed belt. A driving bevel gear that can rotate automatically is also arranged at the middle part of the lower end of one side of the table frame component. A top connecting plate that bounces upward is also slidably connected to one side of the table frame component. The top rotating bevel gear is screwed to the middle part of the bottom end of the top connecting plate, and can form meshing between the driving bevel gear and the side bevel gear. One end of the side connecting rod is screwed to one side of the main body of the telescopic electric cylinder, and the other end is slidably connected to the top connecting plate.

[0009] The guide frames are symmetrically fixed to the two ends of the flip plate, and one side of each group of guide frames is provided with a curved surface formed by connecting an avoidance arc surface, an outward push arc surface and a return arc surface. When the flip plate is in a horizontal position, the avoidance arc surface is directly opposite to the inner side edge of the cutting tooth belt and does not contact it. In the process of the flip plate flipping downward, the outward push arc surface contacts the inner side edge of the cutting tooth belt and the cutting blade does not touch the outside of the winding drum. After the flip plate flips to the winding drum facing the cutting blade, the return arc surface is directly opposite to the inner side edge of the cutting tooth belt and does not contact it.

[0010] A spinneret module and a high-voltage power supply are also installed on the other side of the top of the table frame component, which can make the hydrogel atomized to form a jet stream and shoot it to the outside of the winding drum.

[0011] The use process of the technical solution of the present invention is as follows:

[0012] When the flip plate flips to a horizontal position, the winding drum is used to receive the hydrogel jet stream ejected by the spinneret module and solidify it on the surface of the winding drum to form a nanofiber membrane;

[0013] When the flip plate is in the horizontal position and the flip position, the curved surface formed by the avoidance arc surface, the outward push arc surface and the return arc surface on one side of the guide frame at both ends of the flip plate is always in a position that matches the inner side of the cutting tooth belt, which can facilitate the elastic recovery of the cutting tooth belt in the subsequent process of the flip plate driving the winding drum to flip downward, so that the cutting blade avoids the outside of the winding drum;

[0014] By starting the telescopic electric cylinder, the telescopic rod of the telescopic electric cylinder is retracted, which can drive the flip plate to flip downward. In the process of the flip plate driving the winding drum to flip downward, the guide frame synchronously rotates from the position where the avoidance arc surface is directly opposite to the inner side edge of the cutting tooth belt to the position where the outward push arc surface is in contact with the inner side edge of the cutting tooth belt, and the outward push arc surface is used to push the inner side edge of the cutting tooth belt, so that the cutting blade moves away from the outside of the winding drum, eliminating the interference of the cutting blade on the flipping of the winding drum;

[0015] As the flip plate and the take-up drum flip into place, the guide frame synchronously rotates from the position where the outward arc surface abuts against the inner side of the cutting tooth belt to the position where the return arc surface faces the inner side of the cutting tooth belt, so that the cutting tooth belt is released outward and the cutting blade returns to the cutting position;

[0016] As the flip plate and the winding drum flip to the cutting station, the top connecting plate that is elastically upward will be driven to move downward through the rotational connection formed by one end of the side connecting rod and one side of the telescopic electric cylinder body and the sliding connection formed by the other end of the side connecting rod and the top connecting plate, so that the top connecting plate moves down to the position where the top rotating bevel gear is meshed with the side bevel gear and the driving bevel gear;

[0017] The automatically rotating driving bevel gear drives the top rotating bevel gear and the side bevel gear to form a coordinated transmission, which can drive the cutting tooth belt to roll, thereby driving the cutting blade to move laterally. Since the cutting blade is in the outward cutting position at this time, the nanofiber membrane covered and cured on the outside of the winding drum can be cut.

[0018] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0019] (1) The purpose of setting the flip plate to be automatically flipped is to meet the use requirements of the take-up drum for preparing nanofiber membranes when the flip plate is in a horizontal position, and to drive the nanofiber membrane to flip down to the position for automatic cutting after it covers the outside of the take-up drum; and guide frames are fixedly connected to both ends of the flip plate, and a curved surface formed by connecting an avoidance arc surface, an outward push arc surface and a return arc surface is creatively provided on one side of the guide frame. The coordination formed by the curved surface and the inner side edge of the cutting tooth belt can always form a guiding effect, so that the flipping process of the flip plate can be consistent with the cutting of the elastic material. The cooperation of the cutting tooth belt can not only meet the cutting requirements of the cutting blade installed on the inner side of the cutting tooth belt for the prepared nanofiber membrane, but also utilize the pushing effect of the inner side of the cutting tooth belt formed by the outward push arc surface, so that in the process of the flip plate and the winding drum flipping to the cutting station, the cutting blade will not scratch the nanofiber membrane covered on the outside of the winding drum, and the return arc surface can be used to make the inner side of the cutting tooth belt bounce outward to the cutting state, so that when the winding drum flips to the cutting station, the cutting blade is just opposite to the position of the winding drum, which is convenient for cutting the nanofiber membrane.

[0020] (2) In the present invention, a top connecting plate elastically pointing upward is provided in the middle of one side of the table frame component, and a top rotating bevel gear is screwed on the bottom end of the top connecting plate. The purpose of this arrangement is to enable the telescopic electric cylinder to drive the flip plate to flip down, so as to form a coordinated transmission with the top connecting plate through the side connecting rod, and when the flip plate flips down to the winding drum in the cutting position, the top rotating bevel gear just meshes with the side bevel gear and the top rotating bevel gear, so that the cutting tooth belt is in a position to be effectively driven by the driven bevel gear, that is, the cutting tooth belt can form an automatic rolling state only when the winding drum flips down to the cutting position, thereby preventing the cutting blade from accidentally damaging the nanofiber membrane during the flipping of the winding drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of the overall structure of a coaxial electrospinning device for preparing a hydrogel nanofiber membrane provided by the present invention;

[0023] Figure 2 It is a structural schematic diagram of the table frame components of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the flip-type winding assembly of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the cutting assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the transmission structure of the side bevel gear part of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the spring frame component of the present invention;

[0028] Figure 7 It is a schematic diagram of the installation structure of the flip transmission component of the present invention;

[0029] Figure 8 It is a schematic diagram of the transmission structure of the flip transmission component of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the side guide frame member of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the side guide frame member cooperating with the cutting toothed belt;

[0032] Fig.11 It is a structural schematic diagram of the peeling insert member of the present invention;

[0033] Fig.12 It is a schematic diagram of the peeling state of the peeling insert portion of the present invention.

[0034] Reference numerals:

[0035] Table frame components; 101, main panel; 102, stand; 103, spinneret module; 104, spinneret tube; 105, high voltage power supply; 106, flip position;

[0036] Flip-type winding assembly; 201, flip fixed seat; 202, flip plate; 203, flip connecting arm; 204, vertical rotating seat; 205, winding drum; 206, electric cylinder fixed rotating seat; 207, electric cylinder movable rotating seat; 208, telescopic electric cylinder;

[0037] Cutting assembly; 301, cutting tooth belt seat; 302, cutting tooth belt swivel; 303, cutting tooth belt pulley; 304, cutting tooth belt; 305, blade seat; 306, cutting blade; 307, touch sensor; 308, sensor sheet; 309, vertical axis; 310, vertical axis seat; 311, bottom transmission tooth belt pulley; 312, center fixed seat; 313, center axis; 314, center tooth belt pulley; 315, transmission tooth belt; 316, bottom bevel gear; 317, side axis; 318, side bevel gear; 319, drive motor; 320, drive bevel gear;

[0038] Spring frame component; 401, fixed sliding seat; 402, sliding column; 403, top connecting plate; 404, top spring; 405, bottom limit seat; 406, top rotating seat; 407, top rotating bevel gear;

[0039] Flip transmission component; 501, side rotation seat; 502, side connecting seat; 503, side connecting rod; 504, side sliding column; 505, slide groove;

[0040] Side guide frame member; 601, guide frame; 602, avoidance arc surface; 603, outward push arc surface; 604, return arc surface;

[0041] Stripping insert component; 701, connecting frame; 702, insert rotation groove; 703, stripping insert; 704, gravity ball. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] like Figure 1-Figure 12 As shown, a coaxial electrospinning device for preparing a hydrogel nanofiber membrane, one side of the bottom end of a flip plate 202 is screwed to one side of the top end of a table frame member, a winding drum 205 is screwed to the middle of the top end of the flip plate 202 and can rotate automatically, the bottom end of the main body of a telescopic electric cylinder 208 is screwed to the bottom end of the table frame member, and the top end of the telescopic rod of the telescopic electric cylinder 208 is screwed to the other side of the bottom end of the flip plate 202;

[0045] The cutting toothed belt 304 is laterally located at the upper end of one side of the table frame component, and the cutting blade 306 is fixedly arranged on the inner side of the cutting toothed belt 304. A side bevel gear 318 is swivel-connected to the middle of the lower end of one side of the table frame component, and the side bevel gear 318 is transmission-connected to the cutting toothed belt 304. A driving bevel gear 320 that can rotate automatically is also arranged at the middle of the lower end of one side of the table frame component, and the driving bevel gear 320 is not meshed with the side bevel gear 318. A top connecting plate 403 that bounces upward is also slidably connected to one side of the table frame component, and the top rotating bevel gear 407 is screwed to the middle of the bottom end of the top connecting plate 403, and can form a meshing between the driving bevel gear 320 and the side bevel gear 318. One end of the side connecting rod 503 is screwed to one side of the main body of the telescopic electric cylinder 208, and the other end is slidably connected to the top connecting plate 403. When the telescopic electric cylinder 208 drives the winding drum 205 to flip to a position facing the cutting blade 306, it can just drive the top connecting plate 403 to move down to the position where the top rotating bevel gear 407 is meshed with the driving bevel gear 320 and the side bevel gear 318.

[0046] The guide frame 601 is symmetrically fixed to the two ends of the flip plate 202, and one side of each group of guide frames 601 is provided with a curved surface formed by connecting the avoidance arc surface 602, the outward push arc surface 603 and the return arc surface 604 in sequence from bottom to top. When the flip plate 202 is in a horizontal position, the avoidance arc surface 602 is directly opposite to the inner side edge of the cutting tooth belt 304 and does not touch it. In the process of the flip plate 202 flipping downward, the outward push arc surface 603 contacts the inner side edge of the cutting tooth belt 304 and the cutting blade 306 does not touch the outside of the winding drum 205. After the flip plate 202 flips to the winding drum 205 facing the cutting blade 306, the return arc surface 604 is directly opposite to the inner side edge of the cutting tooth belt 304 and does not touch it, so that the prepared nanofiber membrane can be automatically cut.

[0047] A spinning module 103 and a high-voltage power supply 105 are also installed on the other side of the top of the table frame member, which can make the hydrogel atomized to form a jet stream and shoot it to the outside of the winding drum 205.

[0048] Here’s how it works:

[0049] When the flip plate 202 flips to the horizontal position, the winding drum 205 is used to receive the hydrogel spray stream sprayed by the spinneret module 103, and the hydrogel spray stream can be solidified on the surface of the winding drum 205 to form a nanofiber membrane in conjunction with the uniform and slow rotation of the winding drum 205;

[0050] After the nanofiber membrane is prepared, it needs to be cut along a straight line outside the winding drum 205 and peeled off from the outside of the winding drum 205;

[0051] When the flip plate 202 is in the horizontal position and the flip position, the curved surface formed by the avoidance arc surface 602, the outward push arc surface 603 and the return arc surface 604 on one side of the guide frame 601 at both ends of the flip plate 202 is always in a position that matches the inner side edge of the cutting tooth belt 304, which can facilitate the elastic recovery of the cutting tooth belt 304 in the subsequent process of the flip plate 202 driving the winding drum 205 to flip downward, so that the cutting blade 306 avoids the outside of the winding drum 205;

[0052] By starting the telescopic electric cylinder 208, the telescopic rod of the telescopic electric cylinder 208 is retracted, which can drive the flip plate 202 to flip downward. In the process of the flip plate 202 driving the winding drum 205 to flip downward, the guide frame 601 is synchronously rotated from the position where the avoidance arc surface 602 is directly opposite to the inner side edge of the cutting tooth belt 304 to the position where the outward push arc surface 603 is in contact with the inner side edge of the cutting tooth belt 304, and the outward push arc surface 603 is used to push the inner side edge of the cutting tooth belt 304, so that the cutting blade 306 moves away from the outside of the winding drum 205, thereby eliminating the interference of the cutting blade 306 on the flipping of the winding drum 205.

[0053] As the flip plate 202 and the take-up drum 205 flip into place, the guide frame 601 synchronously rotates from the position where the outward arc surface 603 abuts against the inner side of the cutting tooth belt 304 to the position where the return arc surface 604 faces the inner side of the cutting tooth belt 304, so that the cutting tooth belt 304 is released outward and the cutting blade 306 returns to the cutting position;

[0054] As the flip plate 202 and the winding drum 205 flip to the cutting station, the top connecting plate 403 that is elastically upward will be driven to move downward through the rotational connection formed between one end of the side connecting rod 503 and one side of the main body of the telescopic electric cylinder 208 and the sliding connection formed between the other end of the side connecting rod 503 and the top connecting plate 403, so that the top connecting plate 403 moves downward to the position where the top rotating bevel gear 407 is meshed with the side bevel gear 318 and the driving bevel gear 320;

[0055] The top bevel gear 407 and the side bevel gear 318 are driven by the automatically rotatable driving bevel gear 320 to form a cooperative transmission, which can drive the cutting tooth belt 304 to form a rolling motion, thereby driving the lateral movement of the cutting blade 306. Since the cutting blade 306 is in the outward cutting position at this time, the nanofiber membrane covered and cured on the outside of the winding drum 205 can be cut;

[0056] After the nanofiber membrane is cut, the peeling operation is convenient.

[0057] The specific structure of the table frame components is as follows Figure 2 As shown, the main panel 101 is fixedly connected to the top of the stand 102, and the flip position 106 is opened on one side of the main body of the main panel 101 to provide a space for the flipping of the flip plate 202;

[0058] A spinneret module 103 is installed on the other side of the top of the main panel 101. A spinneret 104 is arranged in the spinneret module 103. The spinneret 104 can automatically move forward, backward, left and right, and can form an automatic extrusion action, so that the hydrogel injected into the spinneret 104 flows out from the head end. The spinneret 104 automatically moves left and right relative to the winding drum 205, so that the nanofiber film can be evenly covered on the surface of the winding drum 205.

[0059] A high-voltage power supply 105 is also installed on one side of the top of the main panel 101, and the high-voltage power supply 105 is electrically connected to the head end of the spinneret 104, so as to form a high-voltage electric field for the head end of the spinneret 104, so that the hydrogel flowing out from the head end of the spinneret 104 forms a tiny jet, which can be sprayed to the outside of the winding drum 205 and solidified on the outside of the winding drum 205 in the form of a nanofiber membrane.

[0060] The specific structure of the flip-type winding assembly is as follows: Figure 3As shown, the flip holder 201 is symmetrically fixedly connected to the bottom end of the main panel 101 and is located on one side of the flip position 106. The flip plate 202 is rotatably connected to the flip holder 201 through a flip connecting arm 203 on one side of the bottom end.

[0061] The middle part of the bottom frame of the stand 102 is fixedly connected with an electric cylinder fixed rotating seat 206, the other side of the middle part of the bottom end of the flip plate 202 is fixedly connected with an electric cylinder movable rotating seat 207, the bottom end of the main body of the telescopic electric cylinder 208 is rotatably connected to the electric cylinder fixed rotating seat 206, and the top end of the telescopic rod of the telescopic electric cylinder 208 is rotatably connected to the electric cylinder movable rotating seat 207, which can drive the flip plate 202 to form a flipping action within a certain range with the flip fixed seat 201 as a reference, so that the flip plate 202 and the winding drum 205 can be in the position of receiving the nanofiber membrane and in the position of being cut;

[0062] The top of the flip plate 202 is symmetrically fixedly connected with a vertical rotating seat 204, and both ends of the winding drum 205 are respectively rotatably connected in the vertical rotating seat 204, and a rotating driving mechanism is provided on one side of one group of vertical rotating seats 204, which can drive the winding drum 205 to rotate at a certain speed.

[0063] The specific structure of the cutting assembly and the spring frame component is as follows Figure 4 , Figure 5 and Figure 6 As shown, the cutting tooth belt seat 301 is symmetrically fixed on one side of the frame of the stand 102, each set of cutting tooth belt seats 301 is rotatably connected with a cutting tooth belt swivel shaft 302, and the top of each set of cutting tooth belt swivel shaft 302 is rotatably connected with a cutting tooth belt wheel 303, and the two ends of the cutting tooth belt 304 are respectively sleeved and installed in different cutting tooth belt wheels 303;

[0064] The cutting blade 306 is fixed to the inner side of the cutting toothed belt 304 by the blade connecting seat 305, and the blade connecting seat 305 and the cutting blade 306 are always located on the straight path of the cutting toothed belt 304;

[0065] A touch sensor 307 is fixedly installed on the outer side of the cutting toothed belt 304, and a sensing sheet 308 is symmetrically fixedly installed on one side of the bottom end of the main panel 101, and the touch sensor 307 is also always located on the straight path of the cutting toothed belt 304. Through the induction formed by the touch sensor 307 and the sensing sheet 308, the lateral moving path range of the blade seat 305 and the cutting blade 306 can be controlled, so that the cutting blade 306 can move within the range of the nanofiber membrane outside the cutting winding drum 205;

[0066] A vertical shaft 309 is fixed to the bottom end of one group of cutting toothed belt wheels 303, a vertical shaft seat 310 is fixedly connected to one side of the frame of the stand 102, the vertical shaft 309 is rotatably connected in the vertical shaft seat 310, a bottom transmission toothed belt wheel 311 is plugged and fixed to the bottom end of the vertical shaft 309, a center fixed seat 312 is fixed to the middle of the lower end of one side of the frame of the stand 102, a center fixed seat 312 is rotatably connected to the main body of the center fixed seat 312, a center shaft 313 and a side shaft 317 perpendicular to each other are rotatably connected, a center toothed belt wheel 314 and a bottom bevel gear 316 are both plugged and fixed in the center shaft 313, a transmission toothed belt 315 is sleeved and installed between the bottom transmission toothed belt wheel 311 and the center toothed belt wheel 314, a side bevel gear 318 is plugged and fixed to one end of the side shaft 317, and meshes with the bottom bevel gear 316;

[0067] A driving motor 319 is also mounted and fixed on the top surface of the central fixing seat 312, and a driving bevel gear 320 is inserted and fixed in the rotating shaft of the driving motor 319;

[0068] When the winding drum 205 is turned to the cutting station along with the turning plate 202, the driving motor 319 is started to drive the driving bevel gear 320 to form a rotating action, so that the driving bevel gear 320 can form a matching transmission with the side bevel gear 318 through the top rotating bevel gear 407 that has moved down to the position, and the side bevel gear 318 forms a matching transmission with the bottom bevel gear 316. The bottom bevel gear 316 drives the rotation of the center toothed belt wheel 314 coaxially through the side shaft 317, so that the center toothed belt wheel 314 can drive the rotation of the bottom drive toothed belt wheel 311 through the transmission toothed belt 315, and the bottom drive toothed belt wheel 311 drives the rotation of the cutting toothed belt wheel 303 through the vertical shaft 309, which can form a rolling action of the cutting toothed belt 304, thereby forming a transverse cutting action of the blade seat 305 and the cutting blade 306.

[0069] A fixed sliding seat 401 is symmetrically fixed at the lower end of one side of the frame of the stand 102, and the top connecting plate 403 is slidably connected in the fixed sliding seat 401 through the sliding column 402 connected at the bottom end. A bottom limit seat 405 is fixed at the bottom end of each group of sliding columns 402, and the bottom limit seat 405 is always located below the fixed sliding seat 401 to prevent the sliding column 402 from being separated from the fixed sliding seat 401;

[0070] A top spring 404 is sleeved and installed in each group of slide columns 402, one end of the top spring 404 is clamped with the top surface of the fixed slide seat 401, and the other end is clamped with the bottom surface of the top connecting plate 403. Under the action of the elastic supporting force of the top spring 404, the top connecting plate 403 and the top rotating bevel gear 407 can be formed to be in a state of natural elastic upward movement, so that the top rotating bevel gear 407 is in a naturally non-meshing position with the side bevel gear 318 and the driving bevel gear 320;

[0071] The top rotating seat 406 is fixedly connected to the bottom end of the top connecting plate 403 , and the top rotating bevel gear 407 is rotationally connected to the top rotating seat 406 .

[0072] The specific structure of the flip transmission component is as follows: Figure 7 and Figure 8 As shown, the side rotating seat 501 is fixed to one side of the upper end of the telescopic electric cylinder 208, the side connecting seat 502 is fixed to one side of the middle part of the top connecting plate 403, the side sliding column 504 is transversely fixed to the outer end of the side connecting seat 502, one end of the side connecting rod 503 is rotatably connected to the side rotating seat 501, and the other end is provided with a sliding groove 505, and the sliding groove 505 is slidably connected in the side sliding column 504;

[0073] During the process of the telescopic electric cylinder 208 rotating and extending itself, the top connecting plate 403 can be driven to move by the rotational cooperation formed by the side connecting rod 503 and the side rotating seat 501 and the sliding cooperation formed by the sliding groove 505 and the side sliding column 504;

[0074] Furthermore, the top-spinning bevel gear 407 and the top-spinning seat 406 will not interfere with the sliding action between the sliding groove 505 and the side sliding column 504 .

[0075] Preferably, a stripping insert member is also installed on the other side of the top of the main panel 101, so that the cut nanofiber membrane can be stripped from the outside of the winding drum 205 during the process of turning up the winding drum 205. The bottom end of the connecting frame 701 is fixedly connected to the top of the main panel 101, and insert rotation grooves 702 are provided on both sides of the top of the connecting frame 701. The top of the stripping insert 703 is screwed into the insert rotation groove 702, and the top of the gravity ball 704 is fixedly connected to one end of the rotating shaft of the stripping insert 703. Under the action of the natural gravity of the gravity ball 704, the stripping insert 703 can be in a naturally drooping state and can freely move away from the winding drum 2 The rotation of one side of 05 will not interfere with the downward turning movement of the winding drum 205, and the stripping plug 703 will not scratch the surface of the nanofiber membrane when the winding drum 205 is turned downward; after the cutting of the nanofiber membrane is completed, the cutting edge of the nanofiber membrane will contact the head end of the stripping plug 703 during the turning-up process, because the inner groove of the plug rotation groove 702 will resist the stripping plug 703, the stripping plug 703 cannot be turned up, so that during the turning-up process of the winding drum 205, the stripping plug 703 can be used to strip off a section of the cutting edge of the nanofiber membrane, so that the subsequent operators can quickly remove the nanofiber membrane based on this.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coaxial electrospinning device for preparing hydrogel nanofiber membranes, comprising a table frame member, characterized in that: It also includes a turnover type winding assembly, a cutting assembly, a spring frame component, a turnover transmission component and a side guide frame component; The flip-type winding assembly comprises a flip plate (202), a winding drum (205) and a telescopic electric cylinder (208); the cutting assembly comprises a cutting toothed belt (304) and a cutting blade (306); the spring frame component comprises a top rotating bevel gear (407); the flip transmission component comprises a side connecting rod (503); the side guide frame component comprises a guide frame (601); one side of the bottom end of the flip plate (202) is screwed to one side of the top end of the table frame component; the winding drum (205) is screwed to the middle of the top end of the flip plate (202); the bottom end of the main body of the telescopic electric cylinder (208) is screwed to the bottom end of the table frame component; the top end of the telescopic rod of the telescopic electric cylinder (208) is screwed to the other side of the bottom end of the flip plate (202); the cutting toothed belt (304) is located on one side of the table frame component; The upper end of the table frame member, the cutting blade (306) is fixedly arranged on the inner side of the cutting toothed belt (304), the lower end middle part of one side of the table frame member is screwed with a side bevel gear (318), and the side bevel gear (318) is transmission-connected with the cutting toothed belt (304), the lower end middle part of one side of the table frame member is also provided with a driving bevel gear (320) that can rotate automatically, the table frame member is also slidably connected with a top connecting plate (403) that bounces upward, the top rotating bevel gear (407) is screwed with the lower end middle part of the top connecting plate (403), and can form meshing between the driving bevel gear (320) and the side bevel gear (318), one end of the side connecting rod (503) is screwed with one side of the main body of the telescopic electric cylinder (208), and the other end is slidably connected with the top connecting plate (403), The guide frames (601) are symmetrically fixed to the two ends of the flip plate (202), and one side of each group of guide frames (601) is provided with a curved surface formed by connecting an avoidance arc surface (602), an outward push arc surface (603) and a return arc surface (604). When the flip plate (202) is in a horizontal position, the avoidance arc surface (602) faces the inner side edge of the cutting toothed belt (304) and does not contact it. When the flip plate (202) flips downward, the outward push arc surface (603) contacts the inner side edge of the cutting toothed belt (304) and the cutting blade (306) does not touch the outside of the winding drum (205). After the flip plate (202) flips to the point where the winding drum (205) faces the cutting blade (306), the return arc surface (604) faces the inner side edge of the cutting toothed belt (304) and does not contact it.

2. The coaxial electrospinning device for preparing a hydrogel nanofiber membrane according to claim 1, characterized in that: The table frame component comprises a main panel (101), a stand (102) and a flip position (106); the main panel (101) is fixedly connected to the top of the stand (102); the flip position (106) is arranged on one side of the main body of the main panel (101); a spinneret module (103) is installed on the other side of the top of the main panel (101); a spinneret (104) is arranged in the spinneret module (103); a high-voltage power supply (105) is also installed on one side of the top of the main panel (101); and the high-voltage power supply (105) is electrically connected to the head end of the spinneret (104).

3. The coaxial electrospinning device for preparing a hydrogel nanofiber membrane according to claim 2, characterized in that: The flip-type winding assembly further comprises a flip fixed seat (201) and a flip connecting arm (203); the flip fixed seat (201) is symmetrically fixedly connected to the bottom end of the main panel (101); the flip plate (202) is rotatably connected to the flip fixed seat (201) via the flip connecting arm (203) on one side of the bottom end; an electric cylinder fixed rotating seat (206) is fixedly connected to the middle of the bottom frame of the vertical frame (102); an electric cylinder movable rotating seat (207) is fixedly connected to the other side of the middle of the bottom end of the flip plate (202); the bottom end of the main body of the telescopic electric cylinder (208) is rotatably connected to the electric cylinder fixed rotating seat (206); the top end of the telescopic rod of the telescopic electric cylinder (208) is rotatably connected to the electric cylinder movable rotating seat (207); the top end of the flip plate (202) is symmetrically fixedly connected to the vertical rotating seat (204); and the two ends of the winding drum (205) are respectively rotatably connected to the vertical rotating seat (204).

4. A coaxial electrospinning device for preparing a hydrogel nanofiber membrane according to claim 2 or 3, characterized in that: The cutting assembly further comprises a cutting toothed belt seat (301) and a blade connecting seat (305); the cutting toothed belt seat (301) is symmetrically fixed on one side of the frame of the stand (102); each set of cutting toothed belt seats (301) is rotatably connected to a cutting toothed belt rotating shaft (302); the top end of each set of cutting toothed belt rotating shaft (302) is rotatably connected to a cutting toothed belt wheel (303); the two ends of the cutting toothed belt (304) are respectively sleeved and installed in different cutting toothed belt wheels (303); the cutting blade (306) is clamped and fixed to the inner side of the cutting toothed belt (304) through the blade connecting seat (305); the outer side of the cutting toothed belt (304) is fixedly installed with a touch sensor (307); and a sensing sheet (308) is symmetrically fixedly installed on one side of the bottom end of the main panel (101).

5. The coaxial electrospinning device for preparing a hydrogel nanofiber membrane according to claim 4, characterized in that: The cutting assembly further comprises a vertical shaft seat (310), a central toothed belt wheel (314) and a bottom bevel gear (316), wherein a vertical shaft (309) is fixed to the bottom end of one set of cutting toothed belt wheels (303), the vertical shaft seat (310) is fixedly connected to one side of the frame of the stand (102), the vertical shaft (309) is rotatably connected to the vertical shaft seat (310), a bottom transmission toothed belt wheel (311) is plugged and fixed to the bottom end of the vertical shaft (309), a central fixed seat (312) is fixed to the middle of the lower end of one side of the frame of the stand (102), and mutually perpendicular gears are rotatably connected in the main body of the central fixed seat (312). The center shaft (313) and the side shaft (317), the center toothed belt wheel (314) and the bottom bevel gear (316) are all plugged and fixed in the center shaft (313), a transmission toothed belt (315) is sleeved and installed between the bottom transmission toothed belt wheel (311) and the center toothed belt wheel (314), the side bevel gear (318) is plugged and fixed at one end of the side shaft (317) and meshes with the bottom bevel gear (316), and a driving motor (319) is also installed and fixed on the top surface of the center fixed seat (312), and the driving bevel gear (320) is plugged and fixed in the rotating shaft of the driving motor (319).

6. A coaxial electrospinning device for preparing a hydrogel nanofiber membrane according to claim 2, 3 or 5, characterized in that: The spring frame component also includes a slide column (402) and a top rotating seat (406). A fixed slide seat (401) is symmetrically fixed at the lower end of one side of the frame body of the stand (102). The top connecting plate (403) is slidably connected to the fixed slide seat (401) through the slide column (402) connected at the bottom end. A bottom limit seat (405) is fixed to the bottom end of each group of slide columns (402). A top spring (404) is sleeved and installed in each group of slide columns (402). One end of the top spring (404) is clamped to the top surface of the fixed slide seat (401), and the other end is clamped to the bottom surface of the top connecting plate (403). The top rotating seat (406) is fixedly connected to the bottom end of the top connecting plate (403), and the top rotating bevel gear (407) is rotationally connected to the top rotating seat (406).

7. A coaxial electrospinning device for preparing a hydrogel nanofiber membrane according to claim 1, 2, 3 or 5, characterized in that: The flip transmission component further comprises a side rotating seat (501), a side connecting seat (502) and a side sliding column (504); the side rotating seat (501) is fixed to one side of the upper end of the main body of the telescopic electric cylinder (208); the side connecting seat (502) is fixed to one side of the middle part of the top connecting plate (403); the side sliding column (504) is fixed to the outer end of the side connecting seat (502); one end of the side connecting rod (503) is rotatably connected to the side rotating seat (501); the other end is provided with a sliding groove (505); and the sliding groove (505) is slidably connected to the side sliding column (504).

8. A coaxial electrospinning device for preparing a hydrogel nanofiber membrane according to claim 2, 3 or 5, characterized in that: A stripping insert component is also installed on the other side of the top of the main panel (101), and the stripping insert component includes a connecting frame (701), a stripping insert (703) and a gravity ball (704). The bottom end of the connecting frame (701) is fixedly connected to the top of the main panel (101), and insert rotation grooves (702) are provided on both sides of the top of the connecting frame (701). The top of the stripping insert (703) is screwed into the insert rotation groove (702), and the top of the gravity ball (704) is fixedly connected to one end of the rotating shaft of the stripping insert (703).

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