A film drawing device and a film drawing method for producing hollow fiber membranes

Abstract

The present invention discloses a film-drawing device and a film-drawing method for the production of hollow fiber membranes, and relates to the technical field related to hollow fiber membranes. The present invention includes a winding assembly, the winding assembly includes a rotatably arranged winding drum, a film-drawing assembly is arranged inside the winding assembly, and the film-drawing assembly includes a film-drawing support plate, wherein a winding assembly is rotatably connected to a winding drive assembly inside, the winding drive assembly includes a driving disc and a first ratchet, and a plurality of ratchets are rotatably arranged on the side surface of the driving disc, wherein a film-drawing drive assembly is fixedly connected to a side surface of a film-drawing assembly, and the film-drawing drive assembly includes a rotatably arranged second ratchet. The present invention realizes the winding of the hollow fiber membrane and the continuous operation of film-drawing by controlling the driving disc to rotate forward, the ratchet drives the first ratchet to rotate, the winding drum performs the winding operation, the driving disc rotates reversely, the ratchet drives the second ratchet to rotate, and the film-drawing support plate moves radially to perform the film-drawing operation, thereby improving the production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field related to hollow fiber membranes, and in particular relates to a membrane drawing device and a membrane drawing method for producing hollow fiber membranes. Background Art

[0002] Hollow fiber membrane is a thin film with selective separation function. Its structural feature is that it is hollow inside and has fibers. By stretching, the internal pore structure of the hollow fiber membrane can be regulated, including porosity, pore size and distribution, which can improve the separation efficiency and permeability of the membrane. At the same time, by cutting, its length, diameter and other dimensions can be adjusted so that it can be neatly arranged inside the module to meet the needs of different applications.

[0003] The common hollow fiber membrane stretching device stretches the hollow fiber membrane by fixing one end of the hollow fiber membrane and controlling the movement of the other end, and then rolls up and cuts the stretched hollow fiber membrane, which makes the production and processing steps cumbersome, and the subsequent operation can only be performed after the previous step is completed, and the production efficiency is low. To this end, we provide a membrane stretching device and a membrane stretching method for hollow fiber membrane production to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a film drawing device and a film drawing method for hollow fiber membrane production, which solves the problems in the above technical background through the specific structural design of the winding component, film drawing component, winding drive component, cutting component and feeding component.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The invention provides a film-drawing device, comprising two symmetrically arranged winding assemblies, the winding assembly comprising a rotatably arranged winding drum, a plurality of film-drawing adjustment openings being opened on the peripheral side surface of the winding drum, the winding assembly also comprising a winding support plate, one side surface of the winding support plate is rotatably connected to a hollow sprocket, the hollow sprocket is fixedly connected to a side surface of the winding drum, a film-drawing assembly is arranged inside the winding assembly, the film-drawing assembly comprises a plurality of radially movable film-drawing support plates, and the film-drawing support plates correspond to the film-drawing adjustment openings one by one; one of the winding assemblies is rotatably connected inside the winding drive assembly, the winding drive assembly comprises two symmetrically arranged driving discs and a first ratchet wheel fixedly connected to an inner side wall of the winding drum, a plurality of ratchet pawls are rotatably arranged on the peripheral side surface of the driving disc, and the ratchet pawls on the two driving discs face different directions respectively, the first ratchet wheel is a circular ring and a plurality of ratchet-shaped grooves are opened on the inner wall, the driving disc close to the first ratchet wheel side is coaxial with the first ratchet wheel, and the first ratchet wheel and the corresponding ratchet pawl are adapted to each other.

[0007] The cam is configured to move the rotation of the drive mechanism and the rotation of the drive mechanism together with the rotation of the control wheel, wherein the cam is configured to move the rotation of the drive mechanism together with the rotation of the control wheel. The cam is configured to move the rotation of the drive mechanism together with the rotation of the control wheel. The cam is configured to move the rotation of the drive mechanism together with the rotation of the control wheel.

[0008] The present invention is further configured as follows, the film-drawing assembly also includes an adjusting support plate fixedly connected to the inner wall of the winding drum, one side of the adjusting support plate is provided with a guide slide groove corresponding to the film-drawing support plate one by one, the inner wall of the film-drawing support plate is fixedly connected to an L-shaped support rod slidably matched with the guide slide groove, and an adjusting vertical plate is fixedly connected to an inner wall of the guide slide groove, and the two relative side surfaces of the L-shaped support rod are rotatably connected to the first adjusting link through the first ear plate, and the two relative side surfaces of the adjusting vertical plate are rotatably connected to the second adjusting link through the second ear plate, and the first adjusting link is rotatably connected to the corresponding second adjusting link. , and two adjacent first adjusting links and two adjacent second adjusting links are rotatably connected; one side of the adjusting support plate is rotatably connected to a hollow pillar, and the peripheral side of the hollow pillar is fixedly connected to a film-pulling adjustment gear, and one side of the adjusting support plate close to the hollow pillar is rotatably connected to a film-pulling transmission gear that meshes with the film-pulling adjustment gear, and one side of the film-pulling transmission gear is fixedly connected to a transmission disc, and the transmission disc is rotatably connected to a first radial connecting rod at an eccentric position, one end of the first radial connecting rod is rotatably connected to a second radial connecting rod, and one end of the second radial connecting rod is rotatably connected to the corresponding L-shaped support rod.

[0009] The present invention is further configured such that the winding drive assembly also includes a driving pillar rotatably connected to a side of the winding support plate close to the winding drum, the driving pillar slides through the hollow sprocket and the winding drum, the driving disc is fixedly connected to the circumferential side of the driving pillar, a plurality of driving ear plates are fixedly connected to the circumferential side of the driving disc, the pawl is rotatably connected to a side of the driving ear plate, and a first arc spring is fixedly connected between one side of the pawl and the adjacent driving ear plate, a driving motor is fixedly installed on a side of the winding support plate away from the winding drum, and the output shaft of the driving motor is fixedly connected to the driving pillar.

[0010] The present invention is further configured as follows: the film-pulling drive assembly also includes a support frame fixedly connected to the corresponding hollow pillar, the second ratchet is fixedly connected to the inner wall of the support frame, one side of the support frame is rotatably connected to the first support plate, the side of the support frame close to the first support plate is fixedly connected to the first rotating shaft, the first rotating shaft slides through the first support plate, and one side of the first support plate is symmetrically fixedly connected to two first cross columns; the film-pulling support plate is fixedly connected to the corresponding hollow pillar, and one side of the film-pulling support plate is rotatably connected to the second support plate, one side of the film-pulling support plate is fixedly connected to the second rotating shaft, the second rotating shaft slides through the second support plate, and one side of the second support plate is symmetrically fixedly connected to two second cross columns.

[0011] The present invention is further configured such that the cutting assembly also includes an L-shaped support plate, wherein one of the L-shaped support plates is fixedly connected to the first transverse column, wherein the other of the L-shaped support plates is fixedly connected to the second transverse column, a first cutting sprocket is rotatably provided on one side of the L-shaped support plate, and one of the first cutting sprocket is fixedly connected to the first rotating shaft, wherein the other of the first cutting sprocket is fixedly connected to the second rotating shaft, a vertical stand is fixedly connected to the upper surface of the L-shaped support plate, a second cutting sprocket is rotatably connected to one side of the vertical stand, the first cutting sprocket and the second cutting sprocket are connected via a cutting chain belt, and the other side of the vertical stand is rotatably connected to A worm gear is fixedly connected to the second cutting sprocket; a worm wheel matching the worm gear is rotatably connected to the upper surface of the L-shaped support plate, a cutting adjustment tube is fixedly connected to the upper surface of the worm wheel, and the upper surface of the cutting adjustment tube is an inclined sliding surface structure; a cutting support plate is fixedly connected to the upper surface of the L-shaped support plate, the cutting connecting rod is rotatably connected to one side of the cutting support plate, and a transmission wheel that slides with the cutting adjustment tube is rotatably provided at one end of the cutting connecting rod, a reset baffle is fixedly connected to the side of the cutting support plate close to the cutting connecting rod, a second arc spring is fixedly connected between the reset baffle and the cutting connecting rod, and an adjustment groove is provided on the surface of the cutting connecting rod.

[0012] A cutting transmission column is slidably provided on the surface of the L-shaped support plate, and a guide support plate is fixedly connected to a side of the cutting support plate close to the cutting connecting rod, the cutting transmission column slides through the guide support plate, and a through hole is opened on the side surface around the cutting transmission column, and a transmission pillar is fixedly connected inside the through hole, and the transmission pillar is slidably arranged inside the adjusting slide groove, and one end of the cutting transmission column passing through the L-shaped support plate is fixedly connected to the cutting seat, the cutting knife is fixedly connected to the lower surface of the cutting seat, and the cutting seat is fixedly connected to the first extension plate on both opposite sides; limiting pressure plates are slidably provided on both opposite sides of the cutting knife, and a second extension plate is symmetrically fixedly connected between the two limiting pressure plates, and the upper surface of the second extension plate is fixedly connected to the limiting pillar, the limiting pillar slides through the first extension plate, and a reset spring is fixedly connected between the first extension plate and the second extension plate, and the reset spring is sleeved on the outside of the limiting pillar.

[0013] The present invention is further configured as follows: the feeding assembly includes symmetrically arranged feeding support plates, wherein one side of one of the feeding support plates is rotatably connected to a linkage sprocket, the linkage sprocket is connected to the hollow sprocket by a transmission chain belt, a reciprocating screw is fixedly connected to one side of the linkage sprocket, the reciprocating screw is rotatably connected to the other feeding support plate, and a limiting guide column is fixedly connected between the two feeding support plates, a feeding support is provided on the peripheral side of the reciprocating screw, a feeding port is provided on the surface of the feeding support, the feeding support is adapted to the reciprocating screw, and the feeding support is slidably fitted to the limiting guide column.

[0014] The present invention is further configured such that the first transmission assembly includes a first transmission gear fixedly connected to the corresponding first cutting sprocket, a second transmission gear meshing with the first transmission gear is rotatably connected to a side surface of the corresponding L-shaped support plate through a first transmission pillar, a first transmission sprocket is fixedly connected to a peripheral side surface of the first transmission pillar, a second transmission sprocket is rotatably connected to a side surface of a winding support plate away from the winding drive assembly, the second transmission sprocket is connected to the first transmission sprocket via a first chain belt, a first adjustment gear is fixedly connected to a side surface of the second transmission sprocket, and a first adjustment gear is rotatably connected to a side surface of the winding support plate meshing with the first adjustment gear. The second adjusting gear is fixedly connected to the corresponding hollow sprocket; the second transmission assembly includes a third transmission gear fixedly connected to the corresponding first cutting sprocket, and the third transmission sprocket is rotatably connected to a side surface of the corresponding L-shaped support plate through a second transmission pillar, and a fourth transmission gear meshing with the third transmission gear is fixedly connected to the side surface of the second transmission pillar, and a fourth transmission sprocket is rotatably connected to a side surface of a feeding support plate close to the winding drive assembly, and the fourth transmission sprocket is fixedly connected to the linkage sprocket close to the winding drive assembly, and the fourth transmission sprocket and the third transmission sprocket are connected by a second chain belt.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention controls the rotation direction of the driving disc by setting a winding component, a film pulling component and a winding drive component. Under the cooperation of the pawl, the first ratchet wheel and the second ratchet wheel, when the driving disc rotates forward, the pawl drives the first ratchet wheel to rotate to perform the winding operation. When the driving disc rotates reversely, the pawl drives the second ratchet wheel to rotate, and the film pulling support plate moves radially back and forth to perform the expansion film pulling and retraction and reset operations, thereby realizing the winding and film pulling operations of the hollow fiber membrane, realizing that the winding and film pulling share the same power source, and continuously operating while improving the film pulling efficiency and reducing the use of the power source.

[0017] 2. The present invention sets a film-drawing assembly and a cutting assembly. When the film-drawing support plate moves radially away from the axis, the cutting adjustment tube rotates synchronously, and the cutting connecting rod is driven to rotate under the action of the transmission wheel. The transmission support moves downward by utilizing the cooperation between the adjustment slide groove and the transmission support. The limiting pressure plate contacts the hollow fiber membrane and limits it, and the cutting knife continues to move downward to cut the stretched hollow fiber membrane. In this way, the hollow fiber membrane is cut off synchronously after the hollow fiber membrane is drawn, and the two are kept synchronously and continuously to reduce the operation interval.

[0018] 3. The invention sets a first transmission component and a second transmission component. Under the action of the first transmission component, when the winding drum close to the winding drive component side rotates to perform the winding operation, the film-pulling support plate away from the winding drive component side moves radially back and forth to perform the film-pulling and retracting and resetting operations. Under the action of the second transmission component, when the film-pulling and retracting and resetting operations are performed on the side close to the winding drive component side, the winding drum away from the winding drive component side rotates to perform the winding operation, thereby realizing different operations on both sides, avoiding the time waste of waiting operations, and improving production efficiency.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 The figure is a schematic diagram of the structure of a film-drawing device.

[0022] Figure 2 It is a structural schematic diagram of another angle of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the winding assembly in the present invention.

[0024] Figure 4 It is a structural schematic diagram of the film-pulling assembly and the film-pulling driving assembly used in conjunction with each other in the present invention.

[0025] Figure 5 It is a structural schematic diagram of the film-drawing assembly in the present invention used in conjunction with the film-drawing support plate and the second support plate.

[0026] Figure 6 It is a longitudinal structural cross-sectional view of the membrane pulling assembly in the present invention.

[0027] Figure 7 It is a structural schematic diagram of the winding drive assembly in the present invention.

[0028] Figure 8 It is a structural schematic diagram of the coordinated use of the winding assembly, the film-drawing assembly, the winding drive assembly and the film-drawing drive assembly in the present invention.

[0029] Fig. 9 It is a longitudinal structural cross-sectional view of the film pulling drive assembly in the present invention.

[0030] Fig.10 It is a schematic diagram of the structure of the cutting assembly in the present invention.

[0031] Fig.11 It is a partial structural schematic diagram of the cutting assembly in the present invention.

[0032] Fig.12 It is a structural schematic diagram of the feeding assembly in the present invention.

[0033] Fig.13 It is a schematic structural diagram of the first transmission component in the present invention.

[0034] Fig.14 It is a schematic diagram of the structure of the second transmission assembly in the present invention.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1-rewinding assembly, 101-rewinding drum, 102-hollow sprocket, 2-film drawing assembly, 201-film drawing support plate, 202-adjusting support disk, 203-L-shaped support rod, 204-adjusting vertical plate, 205-first adjusting connecting rod, 206-second adjusting connecting rod, 207-hollow pillar, 208-film drawing adjustment gear, 209-film drawing transmission gear, 210-transmission disc, 211-first radial connecting rod, 212-second Radial connecting rod, 3-winding drive assembly, 301-driving disc, 302-first ratchet, 303-pawl, 304-driving pillar, 305-first arc spring, 306-driving motor, 4-film pulling drive assembly, 401-second ratchet, 402-support frame, 403-first support disc, 5-film pulling support disc, 6-cutting assembly, 601-cutting connecting rod, 602-cutting knife, 603-L-shaped support plate, 60 4-first cutting sprocket, 605-second cutting sprocket, 606-worm, 607-worm wheel, 608-cutting adjustment tube, 609-transmission wheel, 610-second arc spring, 611-cutting transmission column, 612-guide support plate, 613-through opening, 614-cutting seat, 615-limiting pressure plate, 616-limiting pillar, 7-feeding assembly, 701-linked sprocket, 702-reciprocating screw, 703-limiting guide Toward column, 704-loading support, 8-first transmission assembly, 801-first transmission gear, 802-second transmission gear, 803-first transmission sprocket, 804-second transmission sprocket, 805-first adjusting gear, 806-second adjusting gear, 9-second transmission assembly, 901-third transmission gear, 902-third transmission sprocket, 903-fourth transmission gear, 904-fourth transmission sprocket, 10-second support plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0038] For specific embodiment 1, please refer to Figure 1-14The present invention is a film drawing device, comprising two symmetrically arranged winding components 1, specifically, the winding component 1 comprises a rotatably arranged winding drum 101, and a plurality of film drawing adjustment ports are opened on the side surface of the winding drum 101. The winding component 1 also comprises a winding support plate, and a hollow sprocket 102 is rotatably connected to one side of the winding support plate, and the hollow sprocket 102 is fixedly connected to a side surface of the winding drum 101. A transfer device is arranged directly below the winding drum 101 to facilitate the transfer operation of the cut hollow fiber membrane. A film drawing component 2 is arranged inside the winding component 1, and the film drawing component 2 comprises a plurality of radially movable film drawing support plates 201, and the film drawing support plates 201 correspond to the film drawing adjustment ports one by one. After the hollow fiber membrane is evenly wound around the side surface of the winding drum 101, the radial movement of the film drawing support plate 201 is controlled to perform an expansion-type stretching operation on the hollow fiber membrane, thereby realizing the film drawing operation of the hollow fiber membrane.

[0039] Furthermore, one of the winding components 1 is internally connected to a winding drive component 3 for rotation. The winding drive component 3 includes two symmetrically arranged driving discs 301 and a first ratchet wheel 302 fixedly connected to an inner side wall of the winding drum 101. A plurality of ratchet pawls 303 are rotatably arranged on the circumference of the driving disc 301, and the ratchet pawls 303 on the two driving discs 301 face different directions respectively. The first ratchet wheel 302 is a circular ring and has a plurality of ratchet-shaped grooves on its inner wall, that is, the ratchet pawls 303 close to the first ratchet wheel 302 all face clockwise, and the ratchet pawls 303 away from the first ratchet wheel 302 all face counterclockwise (e.g. Figure 7 As shown in the figure, the driving disc 301 close to the first ratchet 302 is coaxial with the first ratchet 302, and the first ratchet 302 and the corresponding pawl 303 are adapted to each other.

[0040] Furthermore, a film-pulling drive assembly 4 is fixedly connected to one side of one of the film-pulling assemblies 2, and the film-pulling drive assembly 4 includes a second ratchet 401 that is rotatably arranged. The second ratchet 401 is a circular ring and has a structure with a plurality of ratchet grooves on the inner wall. The orientation of the ratchet grooves on the second ratchet 401 is opposite to the orientation of the ratchet grooves on the first ratchet 302. The driving disc 301 away from the side of the first ratchet 302 is coaxial with the second ratchet 401, and the second ratchet 401 is adapted to the corresponding ratchet pawl 303. When the driving disc 301 rotates clockwise (such as Figure 8 As shown in FIG. 1 ), the pawl 303 close to the first ratchet wheel 302 drives the first ratchet wheel 302 to rotate synchronously, and the winding drum 101 rotates clockwise synchronously to realize the winding operation, while the pawl 303 close to the second ratchet wheel 401 slides along the inner wall of the second ratchet wheel 401; when the driving disc 301 rotates counterclockwise (as shown in FIG. Figure 8As shown in the figure, the pawl 303 close to the first ratchet wheel 302 slides along the inner wall of the first ratchet wheel 302, and the winding drum 101 stops rotating, while the pawl 303 close to the second ratchet wheel 401 drives the second ratchet wheel 401 to rotate, thereby controlling the radial movement of the film-drawing support plate 201 to realize the film-drawing operation, wherein one side of the other film-drawing component 2 is rotatably connected to the film-drawing support disk 5; the film-drawing drive component 4 and one side of the film-drawing support disk 5 are fixedly connected to the cutting component 6, and the cutting component 6 includes a rotatably arranged cutting link 601 and a cutting knife 602 that can move up and down, and the cutting link 601 rotates to drive the cutting knife 602 to move up and down, and the cutting knife 602 is located directly above the corresponding film-drawing support plate 201; one side of the two winding components 1 A feeding component 7 is fixedly arranged, and a first transmission component 8 is fixedly connected between the cutting component 6 on the side close to the winding drive component 3 and the adjacent winding component 1. Under the action of the first transmission component 8, when the film-pulling component 2 on the side close to the winding drive component 3 is performing expansion film pulling (that is, the film-pulling component 2 corresponding to the position of the winding drive component 3), the winding component 1 on the side away from the winding drive component 3 is performing a winding operation, and a second transmission component 9 is arranged between the cutting component 6 on the side away from the winding drive component 3 and the feeding component 7 on the side of the adjacent winding component 1. When the winding component 1 on the side close to the winding drive component 3 is performing winding, the film-pulling component 2 on the side away from the winding drive component 3 is performing an expansion film pulling operation.

[0041] The operation process of this embodiment is: control the winding drive assembly 3 to rotate clockwise (such as Figure 8 As shown), under the engagement of the pawl 303 near the first ratchet 302 and the first ratchet 302, the first ratchet 302 rotates, causing the winding drum 101 near the side of the winding drive assembly 3 to rotate, and at the same time drives the loading assembly 7 near the winding drive assembly 3 to perform the loading operation of the hollow fiber membrane, so that the hollow fiber membrane is evenly wound on the winding drum 101 near the side of the winding drive assembly 3, and at the same time, the pawl 303 near the second ratchet 401 slides along the inner wall of the second ratchet 401, and the film pulling support plate 201 is located inside the winding drum 101 until the hollow fiber membrane is evenly distributed on the winding drum 101 near the side of the winding drive assembly 3, and then the loading is stopped; then the winding drive assembly 3 is controlled to rotate counterclockwise (as shown in FIG. Figure 8As shown in the figure), the pawl 303 close to the first ratchet 302 slides along the inner wall of the first ratchet 302, and the winding drum 101 stops rotating, while the pawl 303 close to the second ratchet 401 drives the second ratchet 401 to rotate, controlling the film-drawing support plate 201 to move radially away from the axial position, driving the hollow fiber membrane wrapped on the side surface of the winding drum 101 to move radially synchronously to realize the expansion film-drawing operation, and at the same time, the cutting link 601 rotates to drive the cutting knife 602 to move downward (that is, the cutting knife 602 on the cutting assembly 6 corresponding to the position of the winding drive assembly 3) until the cutting knife 602 contacts the hollow fiber membrane, thereby realizing the cutting operation of the stretched hollow fiber membrane, and the second ratchet 401 continues to rotate counterclockwise, driving the film-drawing support plate 201 to move radially toward the axial direction for retraction.

[0042] When the winding assembly 1 close to the winding drive assembly 3 is winding, the connecting function of the second transmission assembly 9 is used to drive the film pulling assembly 2 away from the winding drive assembly 3 to perform the film pulling operation. When the film pulling assembly 2 close to the winding drive assembly 3 is pulling the film, the connecting function of the first transmission assembly 8 is used to drive the winding assembly 1 away from the winding drive assembly 3 to perform the winding operation.

[0043] For specific embodiment 2, please refer to Figure 2-12On the basis of the specific embodiment 1, specifically, the film drawing component 2 also includes an adjustment support plate 202 fixedly connected to the inner wall of the winding drum 101, a guide groove corresponding to the film drawing support plate 201 is opened on one side of the adjustment support plate 202, an L-shaped support rod 203 slidingly matched with the guide groove is fixedly connected to the inner wall of the film drawing support plate 201, an adjustment vertical plate 204 is fixedly connected to the inner wall of the guide groove, and the L-shaped support rod 203 is rotatably connected to the first adjustment connecting rod 205 on both sides through the first ear plate. The two opposite sides of the vertical plate 204 are rotatably connected to the second adjustment link 206 through the second ear plate, the first adjustment link 205 is rotatably connected to the corresponding second adjustment link 206, and the two adjacent first adjustment links 205 and the two adjacent second adjustment links 206 are rotatably connected; one side of the adjustment support plate 202 is rotatably connected to the hollow pillar 207, and the side surface of the hollow pillar 207 is fixedly connected to the film pulling adjustment gear 208, and the side of the adjustment support plate 202 close to the hollow pillar 207 is rotatably connected to the film pulling adjustment gear The film-pulling transmission gear 209 meshes with the film-pulling transmission gear 208, and a transmission disc 210 is fixedly connected to one side of the film-pulling transmission gear 209. The transmission disc 210 is rotatably connected to a first radial connecting rod 211 at an eccentric position. One end of the first radial connecting rod 211 is rotatably connected to a second radial connecting rod 212. One end of the second radial connecting rod 212 is rotatably connected to the corresponding L-shaped support rod 203. The hollow support 207 rotates to drive the film-pulling adjustment gear 208 to rotate synchronously. Under the connection action of the film-pulling transmission gear 209, the transmission disc 208 is driven to rotate synchronously. 10 rotates, since the first radial link 211 is connected to the eccentric position of the transmission disc 210, the first radial link 211 rotates with the transmission disc 210. During the 180° rotation of the transmission disc 210, the first radial link 211 pushes the second radial link 212, driving the L-shaped support rod 203 to move radially away from the axis. When the transmission disc 210 continues to rotate 180°, the first radial link 211 pulls the second radial link 212, driving the L-shaped support rod 203 to move radially close to the axis and return to the initial position.

[0044] Furthermore, the winding drive assembly 3 also includes a driving pillar 304 rotatably connected to a side of the winding support plate close to the winding drum 101, the driving pillar 304 slides through the hollow sprocket 102 and the winding drum 101, the driving disc 301 is fixedly connected to the side of the driving pillar 304, and a plurality of driving ear plates are fixedly connected to the side of the driving disc 301, the pawl 303 is rotatably connected to a side of the driving ear plate, and a first arc spring 305 is fixedly connected between a side of the pawl 303 and an adjacent driving ear plate, and a driving motor 3 is fixedly installed on a side of the winding support plate away from the winding drum 101 06. The output shaft of the driving motor 306 is fixedly connected to the driving pillar 304. When the driving disc 301 rotates in the direction of the pawl 303, when the pawl 303 contacts the corresponding ratchet groove on the inner wall of the first ratchet 302 or the second ratchet 401, the corresponding first ratchet 302 or the second ratchet 401 is driven to rotate. When the driving disc 301 rotates in the opposite direction of the pawl 303, the pawl 303 slides unhindered along the inner wall of the first ratchet 302 or the second ratchet 401, the first arc spring 305 is compressed, and the first ratchet 302 or the second ratchet 401 stops rotating.

[0045] Furthermore, the film-drawing drive assembly 4 also includes a support frame 402 fixedly connected to the corresponding hollow pillar 207, a second ratchet 401 fixedly connected to the inner wall of the support frame 402, and when the second ratchet 401 rotates, it drives the support frame 402 and the hollow pillar 207 to rotate synchronously, and a first support plate 403 is rotatably connected to one side of the support frame 402, and a first rotating shaft is fixedly connected to a side of the support frame 402 close to the first support plate 403, the first rotating shaft slides through the first support plate 403, and two first cross columns are symmetrically fixedly connected to one side of the first support plate 403; the film-drawing support plate 5 is fixedly connected to the corresponding hollow pillar 207, and a second support plate 10 is rotatably connected to one side of the film-drawing support plate 5, a second rotating shaft is fixedly connected to one side of the film-drawing support plate 5, the second rotating shaft slides through the second support plate 10, and two second cross columns are symmetrically fixedly connected to one side of the second support plate 10.

[0046] Furthermore, the cutting assembly 6 also includes an L-shaped support plate 603, wherein one L-shaped support plate 603 is fixedly connected to the first horizontal column, wherein the other L-shaped support plate 603 is fixedly connected to the second horizontal column, a first cutting sprocket 604 is rotatably provided on one side of the L-shaped support plate 603, and wherein one first cutting sprocket 604 is fixedly connected to the first rotating shaft, wherein the other first cutting sprocket 604 is fixedly connected to the second rotating shaft, and a vertical vertical support plate 603 is fixedly connected to the upper surface of the L-shaped support plate 603. The second cutting sprocket 605 is rotatably connected to one side of the vertical plate, the first cutting sprocket 604 and the second cutting sprocket 605 are connected via a cutting chain belt, and the other side of the vertical plate is rotatably connected to a worm 606, the worm 606 and the second cutting sprocket 605 are fixedly connected, the upper surface of the L-shaped support plate 603 is rotatably connected to a worm wheel 607 adapted to the worm wheel 606, the upper surface of the worm wheel 607 is fixedly connected to a cutting adjustment tube 608, and the upper surface of the cutting adjustment tube 608 is inclined. Inclined sliding surface structure; a cutting support plate is fixedly connected to the upper surface of the L-shaped support plate 603, and a cutting link 601 is rotatably connected to one side of the cutting support plate. A transmission wheel 609 that slides with the cutting adjustment tube 608 is rotatably provided at one end of the cutting link 601. A reset baffle is fixedly connected to the side of the cutting support plate close to the cutting link 601, and a second arc spring 610 is fixedly connected between the reset baffle and the cutting link 601. During the 180° rotation of the cutting adjustment tube 608, under the extrusion of the inclined sliding surface on the upper surface of the cutting adjustment tube 608, the end of the cutting link 601 close to the transmission wheel 609 moves upward, and the second arc spring 610 is compressed. When the cutting adjustment tube 608 continues to rotate 180°, under the elastic recovery action of the second arc spring 610, the end of the cutting link 601 close to the transmission wheel 609 is driven to move downward. An adjustment groove is provided on the surface of the cutting link 601, and the adjustment groove is located at the end of the cutting link 601 away from the transmission wheel 609.

[0047] A cutting transmission column 611 is slidably provided on the surface of the L-shaped support plate 603, and a side of the cutting support plate close to the cutting connecting rod 601 is fixedly connected to a guide support plate 612, and the cutting transmission column 611 slides through the guide support plate 612, and a through hole 613 is opened on the side of the cutting transmission column 611, and a transmission pillar is fixedly connected inside the through hole 613, and the transmission pillar is slidably arranged inside the adjusting slide groove. Under the rotation of the cutting connecting rod 601, the adjusting slide groove pushes and pulls the transmission pillar, thereby realizing the up and down movement of the cutting transmission column 611, and one end of the cutting transmission column 611 passing through the L-shaped support plate 603 is fixedly connected to a cutting seat 614, and the cutting knife 602 is fixedly connected to the lower surface of the cutting seat 614, and the cutting seat 6 14 A first extension plate is fixedly connected to both relatively side surfaces; a limiting pressure plate 615 is slidably set on both relatively side surfaces of the cutting knife 602, a second extension plate is symmetrically fixedly connected between the two limiting pressure plates 615, a limiting pillar 616 is fixedly connected to the upper surface of the second extension plate, the limiting pillar 616 slides through the first extension plate, and a return spring is fixedly connected between the first extension plate and the second extension plate. When the limiting pressure plate 615 contacts the hollow fiber membrane, the position of the hollow fiber membrane to be cut is first limited. When the cutting seat 614 continues to move downward, the limiting pillar 616 slides upward and the return spring is compressed until the cutting knife 602 cuts the hollow fiber membrane, and the return spring is sleeved on the outside of the limiting pillar 616.

[0048] Furthermore, the feeding assembly 7 includes symmetrically arranged feeding support plates, one side of which is rotatably connected to a linkage sprocket 701, the linkage sprocket 701 and the hollow sprocket 102 are connected via a transmission chain belt, one side of the linkage sprocket 701 is fixedly connected to a reciprocating screw rod 702, the reciprocating screw rod 702 is rotatably connected to the other feeding support plate, under the connecting action of the transmission chain belt, the linkage sprocket 701 rotates synchronously with the hollow sprocket 102, thereby driving the reciprocating screw rod 702 to rotate, and a limiting guide column 703 is fixedly connected between the two feeding support plates, a feeding support 704 is arranged on the side surface of the reciprocating screw rod 702, a feeding port is opened on the surface of the feeding support 704, the feeding support 704 is adapted to the reciprocating screw rod 702 (that is, the feeding support 704 is driven to perform horizontal reciprocating motion by the rotation of the reciprocating screw rod 702), and the feeding support 704 is slidably matched with the limiting guide column 703.

[0049] The operation process of this embodiment is as follows: one end of the hollow fiber membrane passes through the loading port on the loading support 704, and the end of the hollow fiber membrane is wound and fixed on the side of the winding drum 101 (the end of the hollow fiber membrane is located directly below the cutting knife 602), and the driving motor 306 is started to drive the driving support 304 to rotate clockwise (such as Figure 8As shown in the figure, the driving disc 301 drives the pawl 303 to rotate synchronously clockwise. During this process, when the pawl 303 close to the first ratchet wheel 302 contacts the inner wall of the thorn-shaped groove on the inner wall of the first ratchet wheel 302, the pawl 303 close to the first ratchet wheel 302 drives the first ratchet wheel 302 to rotate synchronously. The winding drum 101 and the hollow sprocket 102 close to the winding drive assembly 3 are driven to rotate through the first ratchet wheel 302. Under the connection of the transmission chain belt, the linkage sprocket 701 is driven to rotate synchronously, so that the linkage sprocket 701 drives the reciprocating screw rod 702 to rotate. Under the cooperation of the reciprocating screw rod 702 and the feeding support 704 and the sliding cooperation of the feeding support 704 and the limiting guide column 703, the feeding support 704 moves from one end of the reciprocating screw rod 702 to the other end, driving The hollow fiber membrane moves synchronously, and due to the rotation of the winding drum 101, the hollow fiber membrane is evenly distributed in a spiral shape from one end of the winding drum 101 to the other end (i.e., winding). When the hollow fiber membrane is evenly wound on the side surface of the winding drum 101 near the winding drive assembly 3, the hollow fiber membrane is cut after the feeding is stopped and the cut end is fixed on the side surface of the winding drum 101 (located directly below the cutting knife 602, both ends of the hollow fiber membrane wound on the winding drum 101 are fixed on the winding drum 101 to ensure that the hollow fiber membrane will not fall off during the expansion and pulling process). During this process, the pawl 303 close to the side of the second ratchet 401 slides along the inner wall of the second ratchet 401, the first arc spring 305 is compressed, and the second ratchet 401 cannot rotate.

[0050] After the hollow fiber membrane is wound, the driving motor 306 drives the driving support 304 to rotate counterclockwise (eg Figure 8 As shown in the figure, the driving disc 301 drives the pawl 303 to rotate synchronously counterclockwise. During this process, when the pawl 303 close to the second ratchet wheel 401 contacts the inner wall of the thorn-shaped groove of the inner wall of the second ratchet wheel 401, the pawl 303 close to the second ratchet wheel 401 drives the second ratchet wheel 401 to rotate synchronously. The second ratchet wheel 401 drives the support frame 402 and the hollow pillar 207 to rotate synchronously. During the rotation of the hollow pillar 207, the film is pulled. The specific steps are as follows:

[0051] The hollow pillar 207 rotates 180° to drive the film-drawing adjustment gear 208 to rotate synchronously. Under the meshing action of the film-drawing adjustment gear 208 and the film-drawing transmission gear 209, the film-drawing transmission gear 209 rotates and drives the transmission disc 210 to rotate 180° synchronously. Since the first radial connecting rod 211 is connected to the eccentric position of the transmission disc 210, the first radial connecting rod 211 moves with the transmission disc 210. During the 180° rotation of the transmission disc 210, the first radial connecting rod 211 pushes the second radial connecting rod 212, so that the L-shaped support rod 203 drives the corresponding film-drawing support plate 201 to move radially away from the axis. At the same time, during the movement of the corresponding L-shaped support rod 203, one end of the first adjusting connecting rod 205 As the L-shaped support rod 203 moves synchronously, the first adjusting link 205 rotates. Since the position of the adjusting vertical plate 204 is fixed, the second adjusting link 206 is pushed by the first adjusting link 205 to rotate, and the connection point between the first adjusting link 205 and the second adjusting link 206 moves synchronously away from the axial position, thereby causing the film-drawing support plate 201 to move synchronously away from the axial position, driving the hollow fiber membrane wound on the winding drum 101 to move synchronously to perform the film-drawing operation. During this process, the pawl 303 close to the first ratchet 302 slides along the inner wall of the first ratchet 302, the first arc spring 305 is compressed, and the first ratchet 302 cannot rotate, so that the winding drum 101 cannot rotate.

[0052] As the hollow fiber membrane moves synchronously with the membrane pulling support plate 201 to a position away from the axis, the support frame 402 rotates to drive the first rotating shaft to rotate, so that the first cutting sprocket 604 rotates 180° synchronously, and under the connection of the cutting chain belt, the second cutting sprocket 605 is driven to rotate, and the worm 606 rotates synchronously. Under the cooperation of the worm 606 and the worm wheel 607, the worm wheel 607 rotates and drives the cutting adjustment tube 608 to rotate 180° synchronously. In this process, the transmission wheel 609 slides along the lowest position to the highest position of the inclined sliding surface of the cutting adjustment tube 608, thereby driving the end of the cutting connecting rod 601 close to the transmission wheel 609 to move upward, and the second arc spring 610 is compressed, and at the same time, the cutting connecting rod 601 moves downward near one end of the adjusting slot. Under the cooperation of the adjusting slot and the transmission pillar, the transmission pillar moves downward, thereby driving the cutting transmission pillar 611 to move downward synchronously close to the hollow fiber membrane. When the limiting pressure plate 615 contacts the hollow fiber membrane, the position of the hollow fiber membrane to be cut is limited. With the continued downward movement of the cutting transmission pillar 611 and the radial movement of the film-pulling support plate 201, the limiting pressure plate 615 slides upward and drives the limiting pillar 616 to move upward synchronously. The reset spring is compressed, and the cutting knife 602 continues to move downward. When the film-pulling support plate 201 completes the film pulling, the cutting knife 602 moves downward to pull the film. The hollow fiber membrane after cutting is performed, and the cut hollow fiber membrane falls to the transfer equipment under the winding drum 101 under the action of its own gravity, and the cut hollow fiber membrane is transferred along with the transfer equipment; as the hollow pillar 207 continues to rotate 180°, the transmission disc 210 continues to rotate 180° synchronously, and in this process, the first radial connecting rod 211 pulls the second radial connecting rod 212, so that the L-shaped support rod 203 drives the corresponding film-drawing support plate 201 to move radially close to the axis center, and under the connection action of the first adjusting connecting rod 205 and the two second adjusting connecting rods 206, the film-drawing support plate 201 moves radially close to the axis center synchronously, and the film-drawing support plate 201 moves radially toward the axis until it moves to the inside of the winding drum 101 to complete the retraction operation after film pulling. During this process, the first cutting sprocket 604 and the second cutting sprocket 605 rotate synchronously. Under the cooperation of the worm 606 and the worm wheel 607, the cutting adjustment tube 608 continues to move 180° synchronously, and the transmission wheel 609 slides along the highest position to the lowest position of the inclined sliding surface of the cutting adjustment tube 608, so that the cutting connecting rod 601 moves upward near one end of the adjusting slide groove. Under the cooperation of the adjusting slide groove and the transmission pillar, the transmission pillar moves upward, thereby driving the cutting transmission column 611 to move upward and away from the winding drum 101 synchronously until it returns to the initial position.

[0053] For specific embodiment 3, please refer to Figure 13-14On the basis of the specific embodiment 1 and the specific embodiment 2, specifically, the first transmission assembly 8 includes a first transmission gear 801 fixedly connected to the corresponding first cutting sprocket 604, and a second transmission gear 802 meshing with the first transmission gear 801 is rotatably connected to one side of the corresponding L-shaped support plate 603 through a first transmission pillar. The diameter of the first transmission gear 801 is much larger than that of the second transmission gear 802, so that the hollow pillar 207 close to the side of the winding drive assembly 3 rotates one circle, driving the winding drum 101 away from the side of the winding drive assembly 3 to rotate multiple circles, and the first transmission pillar is fixedly connected to the side surface of the first transmission pillar. The transmission sprocket 803 is rotatably connected to a second transmission sprocket 804 on one side of a winding support plate away from the winding drive assembly 3. The second transmission sprocket 804 is connected to the first transmission sprocket 803 through a first chain belt. Under the connection action of the first chain belt, the second transmission sprocket 804 rotates synchronously with the first transmission sprocket 803. A first adjusting gear 805 is fixedly connected to one side of the second transmission sprocket 804. A second adjusting gear 806 meshing with the first adjusting gear 805 is rotatably connected to one side of the winding support plate. The second adjusting gear 806 is fixedly connected to the hollow sprocket 102 away from the winding drive assembly 3.

[0054] Furthermore, the second transmission assembly 9 includes a third transmission gear 901 fixedly connected to the corresponding first cutting sprocket 604, a third transmission sprocket 902 is rotatably connected to one side of the corresponding L-shaped support plate 603 through a second transmission pillar, a fourth transmission gear 903 meshing with the third transmission gear 901 is fixedly connected to the side surface of the second transmission pillar, and the diameter of the third transmission gear 901 is much larger than that of the fourth transmission gear 903, so that the winding drum 101 close to the side of the winding drive assembly 3 rotates multiple times, driving the hollow pillar 207 away from the side of the drive assembly 3 to rotate one circle, and a fourth transmission sprocket 904 is rotatably connected to one side of the loading support plate close to the winding drive assembly 3, the fourth transmission sprocket 904 is fixedly connected to the linkage sprocket 701 close to the winding drive assembly 3, and the fourth transmission sprocket 904 and the third transmission sprocket 902 are connected by a second chain belt.

[0055] The operation process of this embodiment is as follows: during the winding process, the winding drum 101 near the winding drive assembly 3 rotates, and under the connection of the transmission chain belt, the linkage sprocket 701 near the winding drive assembly 3 is driven to rotate synchronously, so that the fourth transmission sprocket 904 rotates synchronously, and under the connection of the second chain belt, the third transmission sprocket 902 is driven to rotate, and then the fourth transmission gear 903 is rotated, and under the meshing action of the fourth transmission gear 903 and the third transmission gear 901, the third transmission gear 901 rotates synchronously. At the same time, because the diameter of the third transmission gear 901 is much larger than that of the fourth transmission gear 903, when the winding drum 101 of the winding drive assembly 3 rotates multiple times for winding, the third transmission gear 901 is rotated synchronously. The transmission gear 901 rotates one circle, thereby causing the third transmission gear 901 to drive the first cutting sprocket 604 away from the winding drive component 3 to rotate one circle, and the second rotating shaft is driven to rotate by the first cutting sprocket 604, so that the film-stretching support plate 5 rotates synchronously, and then drives the hollow pillar 207 on the film-stretching component 2 away from the winding drive component 3 to rotate one circle, thereby realizing the synchronous radial movement of the film-stretching support plate 201 away from the winding drive component 3 away from the axis to perform the film-stretching operation and the synchronous radial movement of the film-stretching support plate 201 close to the axis to perform the retraction and reset operation (that is, in the process of controlling the hollow pillar 207 on the film-stretching component 2 away from the winding drive component 3 to rotate one circle, each film-stretching support plate 201 at this position completes the continuous action of expanding the film and retracting and resetting).

[0056] During the process of the hollow pillar 207 near the winding drive assembly 3 rotating one circle to pull the film and retract and reset, the first cutting sprocket 604 near the winding drive assembly 3 is driven to rotate synchronously, so that the first transmission gear 801 rotates, and under the meshing action of the first transmission gear 801 and the second transmission gear 802, the second transmission gear 802 rotates and drives the first transmission sprocket 803 to rotate. Under the connection action of the first chain belt, the second transmission sprocket 804 rotates synchronously, and then drives the first adjusting gear 805 to rotate synchronously. Under the meshing action of gear 806, the second adjusting gear 806 is driven to rotate and the hollow sprocket 102 away from the winding drive component 3 is driven to rotate, so that the winding drum 101 away from the winding drive component 3 rotates synchronously. Since the diameter of the first transmission gear 801 is much larger than the second transmission gear 802, the hollow pillar 207 close to the side of the winding drive component 3 rotates one circle, driving the winding drum 101 away from the side of the winding drive component 3 to rotate multiple circles, thereby realizing the winding and winding operation of the hollow fiber membrane (that is, the winding drum 101 away from the side of the winding drive component 3 performs a winding action).

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A film drawing device, comprising two symmetrically arranged winding assemblies (1), characterized in that: The winding assembly (1) comprises a rotatably arranged winding drum (101), a plurality of film-drawing adjustment openings are provided on the circumferential side of the winding drum (101), a film-drawing assembly (2) is arranged inside the winding assembly (1), the film-drawing assembly (2) comprises a plurality of radially movable film-drawing support plates (201), and the film-drawing support plates (201) correspond one to one with the film-drawing adjustment openings; One of the winding components (1) is internally rotatably connected to a winding drive component (3), the winding drive component (3) comprising two symmetrically arranged driving discs (301) and a first ratchet wheel (302) fixedly connected to an inner side wall of the winding drum (101), a plurality of ratchet pawls (303) being rotatably arranged on the circumferential side of the driving disc (301), and the ratchet pawls (303) on the two driving discs (301) facing different directions respectively, the first ratchet wheel (302) being a circular ring with a plurality of ratchet-shaped grooves on its inner wall, the driving disc (301) close to the first ratchet wheel (302) being coaxial with the first ratchet wheel (302), and the first ratchet wheel (302) and the corresponding ratchet pawl (303) being matched with each other; A film-pulling drive assembly (4) is fixedly connected to one side of one of the film-pulling assemblies (2), and the film-pulling drive assembly (4) comprises a rotatably arranged second ratchet (401), the second ratchet (401) being a circular ring with a plurality of ratchet grooves on its inner wall, and the orientation of the ratchet grooves on the second ratchet (401) is opposite to the orientation of the ratchet grooves on the first ratchet (302), the driving disc (301) on the side away from the open end of the first ratchet (302) is coaxial with the second ratchet (401), and the second ratchet (401) is matched with the corresponding ratchet pawl (303), and a film-pulling support disc (5) is rotatably connected to one side of another of the film-pulling assemblies (2); The film-drawing drive assembly (4) and one side of the film-drawing support plate (5) are both fixedly connected with a cutting assembly (6), and the cutting assembly (6) comprises a rotatably arranged cutting link (601) and a cutting knife (602) that can move up and down; A feeding assembly (7) is fixedly arranged on one side of each of the two winding assemblies (1); a first transmission assembly (8) is fixedly connected between the cutting assembly (6) on the side close to the winding drive assembly (3) and the adjacent winding assembly (1); and a second transmission assembly (9) is arranged between the cutting assembly (6) on the side away from the winding drive assembly (3) and the feeding assembly (7) on the side adjacent to the winding assembly (1); The winding assembly (1) further comprises a winding support plate, one side of the winding support plate being rotatably connected to a hollow sprocket (102), and the hollow sprocket (102) is fixedly connected to a side of the winding drum (101).

2. A film drawing device according to claim 1, characterized in that: The film-drawing assembly (2) further comprises an adjusting support plate (202) fixedly connected to the inner wall of the winding drum (101); a guide slot corresponding to the film-drawing support plate (201) is provided on one side of the adjusting support plate (202); an L-shaped support rod (203) slidably matched with the guide slot is fixedly connected to the inner wall of the film-drawing support plate (201); an adjusting vertical plate (204) is fixedly connected to the inner wall of the guiding slot; the L-shaped support rod (203) is rotatably connected to a first adjusting link (205) via a first ear plate on two opposite side surfaces; the adjusting vertical plate (204) is rotatably connected to a second adjusting link (206) via a second ear plate on two opposite side surfaces; the first adjusting link (205) is rotatably connected to the corresponding second adjusting link (206); and two adjacent first adjusting links (205) and two adjacent second adjusting links (206) are rotatably connected; One side of the adjustment support plate (202) is rotatably connected to a hollow pillar (207), and a film-drawing adjustment gear (208) is fixedly connected to the peripheral side of the hollow pillar (207). One side of the adjustment support plate (202) close to the hollow pillar (207) is rotatably connected to a film-drawing transmission gear (209) meshing with the film-drawing adjustment gear (208). One side of the film-drawing transmission gear (209) is fixedly connected to a transmission disc (210), and a first radial connecting rod (211) is rotatably connected to an eccentric position of the transmission disc (210). One end of the first radial connecting rod (211) is rotatably connected to a second radial connecting rod (212), and one end of the second radial connecting rod (212) is rotatably connected to a corresponding L-shaped support rod (203).

3. A film drawing device according to claim 2, characterized in that: The winding drive assembly (3) further comprises a driving pillar (304) rotatably connected to a side of the winding support plate close to the winding drum (101), the driving pillar (304) slidingly passes through the hollow sprocket (102) and the winding drum (101), the driving disc (301) is fixedly connected to the peripheral side of the driving pillar (304), the peripheral side of the driving disc (301) is fixedly connected to a plurality of driving ear plates, the ratchet (303) is rotatably connected to a side of the driving ear plate, and a first arc spring (305) is fixedly connected between a side of the ratchet (303) and an adjacent driving ear plate, and a driving motor (306) is fixedly mounted on a side of the winding support plate away from the winding drum (101), and an output shaft of the driving motor (306) is fixedly connected to the driving pillar (304).

4. A film drawing device according to claim 3, characterized in that: The film-pulling drive assembly (4) further comprises a support frame (402) fixedly connected to the corresponding hollow pillar (207); the second ratchet (401) is fixedly connected to the inner wall of the support frame (402); a first support plate (403) is rotatably connected to one side of the support frame (402); a first rotating shaft is fixedly connected to one side of the support frame (402) close to the first support plate (403); the first rotating shaft slides through the first support plate (403); and two first cross pillars are symmetrically fixedly connected to one side of the first support plate (403); The film-drawing support plate (5) is fixedly connected to the corresponding hollow pillar (207), and one side of the film-drawing support plate (5) is rotatably connected to the second support plate (10), one side of the film-drawing support plate (5) is fixedly connected to a second rotating shaft, the second rotating shaft slides through the second support plate (10), and one side of the second support plate (10) is symmetrically fixedly connected to two second cross pillars.

5. A film drawing device according to claim 4, characterized in that: The cutting assembly (6) further comprises an L-shaped support plate (603), wherein one of the L-shaped support plates (603) is fixedly connected to the first transverse column, wherein another of the L-shaped support plates (603) is fixedly connected to the second transverse column, a first cutting sprocket (604) is rotatably provided on a side of the L-shaped support plate (603), and one of the first cutting sprockets (604) is fixedly connected to the first rotating shaft, wherein another of the first cutting sprockets (604) is fixedly connected to the second rotating shaft, and a vertical stand is fixedly connected to the upper surface of the L-shaped support plate (603), wherein a vertical stand is fixedly connected to the upper surface of the L-shaped support plate (603), and a first cutting sprocket (604) is fixedly connected to the first rotating shaft. A second cutting sprocket (605) is rotatably connected to the side surface, the first cutting sprocket (604) and the second cutting sprocket (605) are connected via a cutting chain belt, and a worm (606) is rotatably connected to the other side surface of the vertical upright plate, the worm (606) and the second cutting sprocket (605) are fixedly connected, a worm wheel (607) matching the worm wheel (606) is rotatably connected to the upper surface of the L-shaped support plate (603), a cutting adjustment tube (608) is fixedly connected to the upper surface of the worm wheel (607), and the upper surface of the cutting adjustment tube (608) is an inclined sliding surface structure; A cutting support plate is fixedly connected to the upper surface of the L-shaped support plate (603); the cutting connecting rod (601) is rotatably connected to a side surface of the cutting support plate; a transmission wheel (609) slidably engaged with a cutting adjustment tube (608) is rotatably provided at one end of the cutting connecting rod (601); a reset baffle is fixedly connected to a side surface of the cutting support plate close to the cutting connecting rod (601); a second arc spring (610) is fixedly connected between the reset baffle and the cutting connecting rod (601); and an adjustment slide groove is provided on the surface of the cutting connecting rod (601).

6. A film drawing device according to claim 5, characterized in that: A cutting transmission column (611) is slidably arranged on the surface of the L-shaped support plate (603); a side of the cutting support plate close to the cutting connecting rod (601) is fixedly connected to a guide support plate (612); the cutting transmission column (611) slides through the guide support plate (612); a through hole (613) is provided on the side surface of the cutting transmission column (611); a transmission pillar is fixedly connected inside the through hole (613); the transmission pillar is slidably arranged inside the adjusting slide groove; one end of the cutting transmission column (611) that passes through the L-shaped support plate (603) is fixedly connected to a cutting seat (614); the cutting knife (602) is fixedly connected to the lower surface of the cutting seat (614); and the first extension plates are fixedly connected to the opposite sides of the cutting seat (614); The cutting knife (602) is slidably provided with limiting pressure plates (615) on both sides relative to each other, a second extension plate is symmetrically fixedly connected between the two limiting pressure plates (615), a limiting pillar (616) is fixedly connected to the upper surface of the second extension plate, the limiting pillar (616) slides through the first extension plate, and a return spring is fixedly connected between the first extension plate and the second extension plate, and the return spring is sleeved on the outside of the limiting pillar (616).

7. A film drawing device according to claim 6, characterized in that: The feeding assembly (7) comprises symmetrically arranged feeding support plates, wherein a side surface of one of the feeding support plates is rotatably connected to a linkage sprocket (701), the linkage sprocket (701) is connected to the hollow sprocket (102) via a transmission chain belt, a side surface of the linkage sprocket (701) is fixedly connected to a reciprocating screw (702), the reciprocating screw (702) is rotatably connected to another feeding support plate, and a limiting guide column (703) is fixedly connected between the two feeding support plates, a feeding support (704) is arranged on the side surface of the reciprocating screw (702), a feeding port is provided on the surface of the feeding support (704), the feeding support (704) is adapted to the reciprocating screw (702), and the feeding support (704) is slidably fitted to the limiting guide column (703).

8. A film drawing device according to claim 7, characterized in that: The first transmission assembly (8) comprises a first transmission gear (801) fixedly connected to the corresponding first cutting sprocket (604); a second transmission gear (802) meshing with the first transmission gear (801) is rotatably connected to a side surface of the corresponding L-shaped support plate (603) via a first transmission pillar; a first transmission sprocket (803) is fixedly connected to a side surface of the first transmission pillar; a second transmission sprocket (804) is rotatably connected to a side surface of a winding support plate away from the winding drive assembly (3); the second transmission sprocket (804) is connected to the first transmission sprocket (803) via a first chain belt; a first adjustment gear (805) is fixedly connected to a side surface of the second transmission sprocket (804); a second adjustment gear (806) meshing with the first adjustment gear (805) is rotatably connected to a side surface of the winding support plate; and the second adjustment gear (806) is fixedly connected to a hollow sprocket (102) away from the winding drive assembly (3); The second transmission assembly (9) comprises a third transmission gear (901) fixedly connected to the winding drive assembly (3); a side surface of the L-shaped support plate (603) close to the winding drive assembly (3) is rotatably connected to a third transmission sprocket (902) via a second transmission pillar; a peripheral side surface of the second transmission pillar is fixedly connected to a fourth transmission gear (903) meshing with the third transmission gear (901); a side surface of the loading support plate close to the winding drive assembly (3) is rotatably connected to a fourth transmission sprocket (904); the fourth transmission sprocket (904) is fixedly connected to a linkage sprocket (701) close to the winding drive assembly (3); and the fourth transmission sprocket (904) is connected to the third transmission sprocket (902) via a second chain belt.

9. A film drawing method for producing hollow fiber membranes based on the film drawing device according to claim 8, characterized in that: The steps include: S01, passing one end of the hollow fiber membrane through a loading port on a loading support (704), and fixing the end of the hollow fiber membrane on the side surface of a winding drum (101); S02, controlling the driving disc (301) to rotate in the forward direction, using the ratchet (303) to drive the first ratchet wheel (302) to rotate, the winding drum (101) to rotate, and the reciprocating screw (702) to rotate at the same time, the loading support (704) to move from one end of the reciprocating screw (702) to the other end, and the hollow fiber membrane to move synchronously and be evenly wound around the side surface of the winding drum (101); S03, controlling the driving disc (301) to rotate in the opposite direction, using the ratchet (303) to drive the second ratchet (401) to rotate 180 degrees, and the film-drawing support plate (201) synchronously moves radially away from the axis, driving the hollow fiber membrane on the side surface of the winding drum (101) to perform a film-drawing operation. During the film-drawing process, the cutting connecting rod (601) rotates to drive the cutting transmission column (611) to move downward, and the cutting knife (602) synchronously moves downward to cut the hollow fiber membrane after the film is drawn, and the cut hollow fiber membrane falls to the transfer device below and is transferred; S04, the second ratchet wheel (401) continues to rotate 180°, and the film-pulling support plate (201) synchronously moves radially toward the axis until the film-pulling support plate (201) moves into the interior of the winding drum (101), thereby achieving a retracting and resetting operation of the film-pulling support plate (201), and at the same time, the cutting connecting rod (601) rotates in the opposite direction, driving the cutting transmission column (611) to move upward for resetting; S05. During the process of the winding drum (101) near the first ratchet (302) rotating and winding, the second transmission component (9) drives the hollow pillar (207) away from the first ratchet (302) to rotate one circle to perform film pulling and retracting and resetting operations. During the process of the hollow pillar (207) near the second ratchet (401) rotating one circle, the film pulling support plate (201) near the second ratchet (401) moves radially back and forth to perform film pulling and retracting and resetting. The first transmission component (8) drives the winding drum (101) away from the second ratchet (401) to rotate to perform the winding operation.

Images