Multi-breadth edge cutting device for hollow fiber membrane knitting machine

Abstract

The utility model provides a multi-breadth edge cutting device for a hollow fiber membrane knitting machine, which comprises an unwinding assembly and a limiting and dispersing assembly, and a first limiting block, a second limiting block, a fourth limiting block and a sixth limiting block of the limiting and dispersing assembly are in contact with the non-cutting side of a membrane curtain; the third limiting block and the fifth limiting block make contact with the cutting side of the film curtain. The stable advancing and limiting functions needed by film curtain edge cutting are achieved, and the film curtain can be limited in the left-right direction. The position of the limiting and dispersing assembly can be determined according to the width of the waste edge of the membrane curtain, the requirements of different membrane curtain breadths can be met, and efficient and accurate edge cutting of the hollow fiber membrane curtain is achieved. The device not only improves the production efficiency, but also ensures the stability of the trimming quality. Due to the arrangement of the limiting and dispersing assembly, stable operation of the membrane curtain in the conveying process is ensured, the problem of irregular cut edges caused by deviation or shaking is avoided, and the production efficiency and the product quality of the hollow fiber membrane knitting machine are improved.

Description

Technical Field

[0001] The present application relates to the field of fiber membrane weaving, and in particular to a multi-width trimming device for a hollow fiber membrane weaving machine. Background Art

[0002] In the production process of hollow fiber membrane curtains, weaving machines are core equipment, and their performance and flexibility are directly related to product quality and production efficiency. Due to their unique structural characteristics and wide range of applications, such as water treatment, air purification, and pharmaceutical separation, hollow fiber membrane curtains often have diverse and variable requirements for width. Traditional hollow fiber membrane weaving machines often rely on ultrasonic vibrators for precise cutting. Although this technology can achieve high-precision membrane edge processing, it is limited by the physical properties and installation structure of ultrasonic vibrators, and can often only efficiently and accurately process membrane curtain widths within a fixed or very limited range of variation.

[0003] Specifically, ultrasonic cutting technology uses energy generated by high-frequency vibrations to cut materials. This process requires stable contact and pressure between the cutting head and the film curtain to ensure the flatness and precision of the cut surface. However, when the width of the film curtain needs to be adjusted to accommodate different product specifications, traditional trimming devices face two major challenges: First, the complexity of the adjustment process, which involves repositioning and calibration of mechanical parts, and may even require the replacement of some components. This is not only time-consuming and labor-intensive, but also increases operational difficulty and downtime. Second, it is inefficient. Frequent adjustments to cutting parameters and mechanical structures will affect the continuity and stability of the entire production line, resulting in a significant drop in production efficiency.

[0004] Patent CN202120310772.0 proposes a cutting device for hollow fiber flat-plate membranes, which can automatically cut out hollow fiber flat-plate membranes. It is simple to operate, saves time and effort, has high cutting efficiency, and the cut flat-plate membranes have good consistency. However, when faced with diversified width requirements, its adjustment flexibility and efficiency improvement are still limited. Especially for scenarios that require frequent switching of production of different widths, this solution fails to solve the problems of difficult adjustment and low efficiency. Therefore, there is a need for an economical and efficient device to achieve flexible and fast cutting of membrane curtains of different widths. Utility Model Content

[0005] In order to solve the existing problems of difficult device adjustment and low trimming efficiency in production scenarios where frequent switching of different widths is required, the present application provides a multi-width trimming device for a hollow fiber membrane braiding machine, comprising: an unwinding component, a position-limiting discrete component and a track;

[0006] The unwinding assembly is fixed to one end of the track, a power assembly is provided at the other end of the track, a cutting assembly is provided on the side of the power assembly away from the track, and a winding mechanism is provided on the side of the cutting assembly away from the power assembly;

[0007] The track is arranged in two parallel rows, one end of the film curtain is wound and connected with the unwinding assembly, and the other end passes through the power assembly and the cutting assembly along the extension direction of the track to the winding mechanism, and is wound on the winding mechanism;

[0008] The limiting discrete components include: a first limiting block, a second limiting block, a third limiting block, a fourth limiting block, a fifth limiting block, and a sixth limiting block;

[0009] The first limiting block, the second limiting block, the fourth limiting block and the sixth limiting block are all in contact with the non-cutting side of the film curtain; the third limiting block and the fifth limiting block are all in contact with the cutting side of the film curtain.

[0010] In a feasible implementation, the track includes an upper track and a lower track, the membrane curtain is laid flat between the upper track and the lower track, and contacts the upper track, with a gap between the membrane curtain and the lower track;

[0011] The first limit block and the second limit block are both arranged between the film curtain and the lower row of tracks; the first limit block is close to the unwinding assembly, and the second limit block is close to the power assembly.

[0012] In a feasible implementation, the position-limiting discrete component further includes: a fixed shaft;

[0013] The fixed shaft is arranged between the first limit block and the second limit block; both ends of the fixed shaft are rotatably fixed on the upper row track and the lower row track respectively, and the film curtain passes under the fixed shaft.

[0014] In a feasible implementation, the third limit block and the fourth limit block are both arranged between the power assembly and the cutting assembly, the third limit block is arranged at one end close to the upper row of rails, and the fourth limit block is arranged at one end close to the lower row of rails.

[0015] In a feasible implementation, the fifth limit block and the sixth limit block are both arranged between the cutting assembly and the winding mechanism, the fifth limit block is arranged at one end close to the upper row of rails, and the sixth limit block is arranged at one end close to the lower row of rails.

[0016] In a feasible implementation, the unwinding assembly includes: a workbench and an unwinding bracket;

[0017] The workbench is provided with a clamping hole, the unwinding bracket is clamped with the workbench through the clamping hole, the unwinding bracket is sleeved with a reel, and the film curtain is wound on the reel.

[0018] In a feasible implementation, the unwinding bracket includes a first curved portion, a second curved portion, and a third curved portion;

[0019] One end of the first curved portion passes through the clamping hole, the bending portion of the first curved portion is clamped and fixed to the workbench, and the angle of the first curved portion is less than 45°;

[0020] The angle of the second curved portion ranges from 45° to 135°;

[0021] The angle of the third bending portion ranges from 70° to 180°.

[0022] In a feasible implementation, the unwinding bracket is an integrally formed symmetrical structure;

[0023] There are two clamping holes, which respectively correspond to the two first bending parts of the unwinding bracket.

[0024] In a feasible implementation, the mass of the first limit block, the second limit block, the third limit block, the fourth limit block, the fifth limit block, and the sixth limit block are all greater than 100 g.

[0025] In a feasible implementation, the first limiting block and the second limiting block are composed of a plurality of limiting pieces, and the number of the limiting pieces is adjustable.

[0026] The present application provides a multi-width trimming device for a hollow fiber membrane weaving machine, including an unwinding component and a position-limiting discrete component, which meets the smooth advancement and position-limiting functions required for trimming, can limit the membrane curtain in the left and right directions, and the position of the position-limiting discrete component can be determined according to the width of the waste edge of the membrane curtain, which can adapt to the requirements of different membrane curtain widths, and realize efficient and accurate trimming of the hollow fiber membrane curtain. This device not only improves production efficiency, but also ensures the stability of the trimming quality. The setting of the position-limiting discrete component ensures the smooth operation of the membrane curtain during the transmission process, avoids the problem of uneven trimming due to offset or jitter, and improves the production efficiency and product quality of the hollow fiber membrane weaving machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the implementation of the present invention, and together with the specification, are used to explain the principles of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the implementation of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0028] Figure 1 1 is a schematic structural diagram of a multi-width trimming device for a hollow fiber membrane braiding machine according to an exemplary embodiment of the present application;

[0029] Figure 2 1 is a schematic structural diagram of a position-limiting discrete component shown in an exemplary embodiment of the present application;

[0030] Figure 3 yes Figure 1 A partial enlarged view of point A;

[0031] Figure 4 1 is a schematic structural diagram of an unwinding assembly shown in an exemplary embodiment of the present application;

[0032] Figure 5 1 is a schematic structural diagram of an unwinding bracket shown in an exemplary embodiment of the present application;

[0033] Figure 6 yes Figure 4 A partial enlarged view of point B;

[0034] Figure 7 This is a structural diagram of the installation of an unwinding bracket and a reel shown in an exemplary embodiment of the present application;

[0035] Figure 8 It is a schematic structural diagram of a limiting piece shown in an exemplary embodiment of the present application.

[0036] Description of the accompanying drawings:

[0037] 10-unwinding assembly; 20-limiting discrete assembly; 30-track; 40-power assembly; 50-cutting assembly; 60-winding mechanism; 70-reel;

[0038] 11-Workbench; 12-Card hole; 13-Unwinding bracket; 21-First limit block; 22-Second limit block; 23-Third limit block; 24-Fourth limit block; 25-Fifth limit block; 26-Sixth limit block; 27-Fixed shaft; 28-Limiting plate; 31-Upper track; 32-Lower track;

[0039] 131 - first bend; 132 - second bend; 133 - third bend. DETAILED DESCRIPTION

[0040] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present invention will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a full understanding of the implementation of the embodiments of the present invention.

[0041] Due to its unique structural characteristics and wide range of applications, such as water treatment, air purification, and pharmaceutical separation, hollow fiber membrane curtains often have diverse and changeable requirements for width. Traditional hollow fiber membrane weaving machines are limited by the physical characteristics and installation structure of ultrasonic vibrators and can only handle fixed membrane curtain widths. Patent CN202120310772.0 proposes a cutting device for hollow fiber flat-plate membranes, which can automatically cut out hollow fiber flat-plate membranes. It is simple to operate, saves time and effort, has high cutting efficiency, and the cut flat-plate membranes have good consistency. However, when faced with diversified width requirements, its adjustment flexibility and efficiency improvement are still limited. However, for scenarios that require frequent switching of production of different widths, it fails to fundamentally solve the problems of adjustment difficulties and low efficiency.

[0042] To solve the above problems, refer to Figure 1 and Figure 2 As shown, the present application provides a multi-width trimming device for a hollow fiber membrane braiding machine, including: an unwinding component 10, a position limiting discrete component 20 and a track 30.

[0043] The unwinding assembly 10 is fixed to one end of the track 30. The other end of the track 30 is equipped with a power assembly 40. The side of the power assembly 40 away from the track 30 is equipped with a cutting assembly 50. The side of the cutting assembly 50 away from the power assembly 40 is equipped with a reeling mechanism 60. The track 30 is arranged in two parallel rows. One end of the film curtain is wrapped around the unwinding assembly 10, and the other end is extended along the extension direction of the track 30, passing through the power assembly 40 and cutting assembly 50 to the reeling mechanism 60, where it is wound around the reeling mechanism 60.

[0044] Among them, the unwinding component 10 is fixed to one end of the track 30, which is responsible for stably releasing the film curtain and ensuring that the film curtain remains flat at the initial stage. The track 30 is designed as two parallel rows, providing a stable path for the transmission of the film curtain. The film curtain travels along the extension direction of the track, obtains the necessary driving force through the power component 40, and thus maintains a constant speed and tension. The cutting component 50 is located downstream of the power component 40, and can complete the edge trimming of the film curtain according to the preset width requirements, ensuring the consistency and quality of the product. The winding mechanism 60 is located downstream of the cutting component 50, and is used to neatly wind up the cut film curtain for subsequent storage and transportation.

[0045] The limiting discrete component 20 includes: a first limiting block 21, a second limiting block 22, a third limiting block 23, a fourth limiting block 24, a fifth limiting block 25, and a sixth limiting block 26; the first limiting block 21, the second limiting block 22, the fourth limiting block 24 and the sixth limiting block 26 are all in contact with the non-cutting side of the film curtain; the third limiting block 23 and the fifth limiting block 25 are both in contact with the cutting side of the film curtain.

[0046] Among them, the first limit block 21, the second limit block 22, the fourth limit block 24 and the sixth limit block 26 are in contact with the non-cutting side of the film curtain, which helps to maintain stable transmission of the film curtain; while the third limit block 23 and the fifth limit block 25 are in contact with the cutting side of the film curtain, and by precisely controlling the position of the film curtain, it is ensured that the cutting assembly 50 can accurately perform edge cutting operations.

[0047] Overall, the multi-width trimming device of the present application, through the unwinding assembly 10 and the position-limiting discrete assembly 20, achieves efficient and precise trimming of hollow fiber membrane curtains, meeting the smooth forward and position-limiting functions required for trimming. The membrane curtain can be limited in the left and right directions. The position of the position-limiting discrete assembly can be determined according to the width of the membrane curtain waste edge, which can adapt to the requirements of different membrane curtain widths, achieving efficient and precise trimming of hollow fiber membrane curtains. This device not only improves production efficiency and reduces production costs, but also significantly improves the quality stability and consistency of the product.

[0048] In some embodiments of this application, continue to refer to Figure 1 and Figure 2 As shown, the track 30 includes an upper track 31 and a lower track 32. The film curtain is laid flat between the upper track 31 and the lower track 32, and is in contact with the upper track 31, and there is a distance between it and the lower track 32; the first limit block 21 and the second limit block 22 are both arranged between the film curtain and the lower track 32; the first limit block 21 is close to the unwinding assembly 10, and the second limit block 22 is close to the power assembly 40.

[0049] The film curtain is laid flat between the upper and lower rails 31, maintaining close contact with the upper rail 31 while maintaining a certain distance from the lower rail 32. This design ensures that the film curtain receives adequate support during transportation while avoiding friction damage caused by excessive contact. At the same time, the width margin of the rail 30 can also accommodate film curtains of different widths, making it easy to adjust.

[0050] The first stopper 21, located near the unwinding assembly 10, primarily guides and limits the film curtain at the start of its transport, ensuring it smoothly enters the trimming device. The second stopper 22, located near the power assembly 40, further stabilizes the film curtain during transport, preventing it from shifting or shaking due to the tension of the power assembly. The first and second stoppers 21, 22 not only guide and limit the film, but also provide an accurate reference for the subsequent cutting assembly 50 through their positioning, ensuring precise and consistent trimming.

[0051] In some embodiments of this application, continue to refer to Figure 1 and Figure 3 As shown, the limiting discrete component 20 also includes: a fixed shaft 27; the fixed shaft 27 is arranged between the first limiting block 21 and the second limiting block 22; the two ends of the fixed shaft 27 are respectively rotatably fixed on the upper track 31 and the lower track 32, and the film curtain passes under the fixed shaft 27.

[0052] The ends of the fixed shaft 27 are rotatably fixed to the upper and lower rails 31 and 32, respectively. This rotational fixation enhances the stability of the fixed shaft 27 and further improves the flexibility and adaptability of the trimming device. The film curtain passes under the fixed shaft 27, which acts as a horizontal limiter after the film curtain is unwound. The fixed shaft 27 forms a natural tension adjustment point, helping to maintain uniform tension during the film curtain's transportation.

[0053] In some embodiments of the present application, reference Figures 1 to 3 As shown, the third limit block 23 and the fourth limit block 24 are both arranged between the power assembly 40 and the cutting assembly 50, the third limit block 23 is arranged at one end close to the upper row of rails 31, and the fourth limit block 24 is arranged at one end close to the lower row of rails 32.

[0054] The symmetrical and complementary arrangement of the third and fourth stoppers 23, 24 ensures that the film curtain is fully guided and positioned before being transferred to the cutting assembly. The third stopper 23, in conjunction with the upper row of rails 31, effectively prevents the film curtain from shifting upward, while the fourth stopper 24, in conjunction with the lower row of rails 32, ensures downward stability of the film curtain.

[0055] As the film curtain is transferred from the power assembly 40 to the cutting assembly 50, the third and fourth stoppers 23 and 24 form a stable transmission channel, ensuring that the film curtain maintains a constant speed and tension, significantly improving the performance of the entire trimming device. This provides the cutting assembly 50 with more accurate and reliable cutting conditions, allowing it to handle film curtains of varying widths and materials, further broadening the device's application range and ensuring product consistency and quality.

[0056] In some embodiments of this application, continue to refer to Figure 1 and Figure 2 As shown, the fifth limit block 25 and the sixth limit block 26 are both arranged between the cutting assembly 50 and the winding mechanism 60, the fifth limit block 25 is arranged at one end close to the upper row track 31, and the sixth limit block 26 is arranged at one end close to the lower row track 32.

[0057] The fifth stopper 25 further guides and limits the film curtain near the upper track 31. After the film curtain is cut by the cutting assembly 50, the fifth stopper 25 ensures that the film curtain can continue to maintain a stable transmission path, preventing deviation caused by tension changes after cutting or external interference. Meanwhile, the sixth stopper 26 is located near the end of the lower track 32, forming a symmetrical layout with the fifth stopper 25, jointly maintaining the stability of the film curtain during transmission. By closely cooperating with the lower track 32, the sixth stopper 26 ensures precise control and guidance of the film curtain in the downward direction, providing an excellent prerequisite for subsequent winding operations.

[0058] During the process of transmitting the film curtain from the cutting assembly 50 to the winding mechanism 60, the fifth limit block 25 and the sixth limit block 26 together constitute a stable transmission channel, which effectively prevents the deviation and shaking of the film curtain, thereby ensuring that the film curtain can maintain a neat and uniform shape after winding, providing stable winding conditions for the winding mechanism 60, thereby ensuring the quality of the final product.

[0059] In some embodiments of the present application, reference Figure 4 As shown, the unwinding assembly 10 includes: a workbench 11 and an unwinding bracket 13; a clamping hole 12 is provided on the workbench 11, and the unwinding bracket 13 is clamped with the workbench 11 through the clamping hole 12, and a reel 70 is sleeved on the unwinding bracket 13, and the film curtain is wound on the reel 70.

[0060] The workbench 11 provides a stable work surface and mounting base. Clamping holes 12 are provided on the workbench 11 to ensure the unwinding bracket 13 is securely and accurately mounted on the workbench. The unwinding bracket 13 supports the reel 70 and the film curtain. The unwinding bracket 13 is connected to the workbench 11 through the clamping holes 12. This connection is both stable and flexible, allowing for quick adjustment and replacement based on actual needs.

[0061] The reel 70 is used to store and release the film curtain. The reel 70 is sleeved on the unwinding bracket 13 and releases the film curtain by rotating. This method is convenient for the storage and transportation of the film curtain and also ensures the flatness and continuity of the film curtain during the unwinding process.

[0062] In some embodiments of the present application, reference Figure 5 As shown, the unwinding bracket 13 includes a first bent portion 131, a second bent portion 132 and a third bent portion 133; one end of the first bent portion 131 passes through the clamping hole 12, and the bending part of the first bent portion 131 is clamped and fixed to the workbench 11, and the angle of the first bent portion is less than 45°; the angle range of the second bent portion 132 is 45° to 135°; the angle range of the third bent portion 133 is 70° to 180°.

[0063] The first bend 131 is used to connect the unwinding bracket 13 to the workbench 11. One end of the first bend passes through the latch hole 12 on the workbench 11 and is fixed to the workbench through the bend. This design not only ensures the stable installation of the unwinding bracket, but also facilitates quick adjustment according to actual needs. The angle of the first bend is less than 45°, so that after the head end of the first bend passes through the latch hole of the workbench, the bent portion of the first bend can be fixed to the lower half of the workbench. This design does not require the use of other fixing components, has a simple structure, and is easy to manufacture. At the same time, it reduces the space occupied during installation and improves the compactness and flexibility of the entire device.

[0064] Reference Figure 6 As shown, the angle of the second curved portion 132 is set to range from 45° to 135°. Within this adjustable range, the main portion of the unwinding bracket 13 can vary from parallel to perpendicular to the table surface, accommodating varying roll requirements. This allows for optimal unwinding within the fixed space of the braiding machine without colliding with the original braiding machine components or the worktable 11. This also allows the unwinding bracket 13 to provide more balanced support for the reel 70. Within this angle range, the unwinding bracket 13 effectively distributes the weight and tension of the film curtain, ensuring the stability of the reel 70 during rotation.

[0065] Reference Figure 7 As shown, the angle range of the third bend 133 is set to 70° to 180°. When the angle of the third bend is less than 70°, the reel 70 cannot be inserted into the unwinding bracket 13. By adjusting the angle of the third bend to exceed 70°, the installation of the reel 70 is more convenient. This design improves the installation efficiency of the unwinding bracket 13 and the reel 70. Furthermore, within this angle range, the unwinding bracket 13 can ensure that the film curtain remains flat and continuous during the unwinding process, reducing quality problems caused by bending or twisting, and helping to improve the film curtain unwinding efficiency.

[0066] This embodiment improves the efficiency and accuracy of film curtain unwinding by optimizing the structure and angle of the unwinding bracket 13, providing excellent conditions for subsequent cutting operations. Furthermore, the secure installation and balanced support of the unwinding bracket 13 ensure the stability of the reel 70 during rotation, reducing quality issues caused by vibration or misalignment. The angled design also enhances the compactness and flexibility of the entire device, enabling it to accommodate film curtains of varying widths and materials, further broadening its application range.

[0067] In some embodiments of this application, continue to refer to Figure 5 As shown, the unwinding bracket 13 is an integrally formed symmetrical structure; there are two clamping holes 12 , which respectively correspond to the positions of the two first curved portions 131 of the unwinding bracket 13 .

[0068] The unwinding bracket 13 utilizes a symmetrical, one-piece design, enhancing its overall rigidity and stability while simplifying manufacturing and installation. This integrated design eliminates safety hazards caused by loose or damaged connectors while also increasing its durability and service life. The symmetrical structure ensures even distribution of stress on the unwinding bracket 13, reducing the risk of deformation or breakage due to stress concentration.

[0069] The placement of the retaining holes 12 aligns with the two first curved portions 131 of the unwinding bracket 13, ensuring accurate installation and securement of the unwinding bracket 13 while also enhancing ease and flexibility. The retaining holes 12 securely fasten the unwinding bracket 13 to the workbench 11, preventing unstable film curtain unwinding caused by the bracket's wobbling. Furthermore, the design of the retaining holes 12 allows for quick adjustment of the position and angle of the unwinding bracket 13 to accommodate film curtains of varying widths and materials.

[0070] In some embodiments of the present application, the mass of the first limit block 21, the second limit block 22, the third limit block 23, the fourth limit block 24, the fifth limit block 25, and the sixth limit block 26 are all greater than 100g. The mass of each limit block exceeding 100g ensures their stability during operation of the device. During the unwinding, transportation, and cutting of the film curtain, each limit block needs to withstand the tension, vibration, and possible external impact of the film curtain. The larger mass makes it less likely for each limit block to shift due to slight disturbances, thereby ensuring the accuracy and stability of the film curtain path, which is crucial for ensuring cutting accuracy and product quality.

[0071] In some embodiments of the present application, reference Figure 8 As shown, the first limiting block 21 and the second limiting block 22 are composed of a plurality of limiting pieces 28, and the number of the limiting pieces is adjustable.

[0072] It is understood that the first limit block 21 and the second limit block 22 composed of multiple limit plates 2828 can more accurately control the path and position of the film curtain. During the unwinding and transmission process of the film curtain, different film curtains or different production needs may require different limit accuracy. By increasing or decreasing the number of limit plates 28, the restraining force of the first limit block 21 and the second limit block 22 on the film curtain can be fine-tuned, thereby achieving precise control of the film curtain path. This flexibility ensures that the device can handle film curtains of various widths and materials, improving production efficiency and product quality.

[0073] Secondly, the modular design makes the maintenance and replacement of the first limit block 21 and the second limit block 22 simpler and more convenient. During long-term use, the first limit block 21 and the second limit block 22 may need to be replaced due to wear or damage. The structure composed of multiple limit plates 28 allows for the replacement of damaged limit plates 28 individually without replacing the entire first limit block 21 and the second limit block 22, thereby reducing maintenance costs and downtime. In addition, this design also makes it easier to adjust the height of the first limit block 21 and the second limit block 22. The operator can quickly adjust the number and position of the limit plates 28 according to production needs, thereby improving work efficiency.

[0074] At the same time, the number of adjustable limit plates 28 enables the first limit block 21 and the second limit block 22 to cope with film curtains of different widths. In a weaving machine, the width of the film curtain may change due to changes in product demand or raw material supply. By adjusting the number of limit plates 28, it can be ensured that the first limit block 21 and the second limit block 22 always match the distance between the film curtain and the lower row of rails 32. This modular and adjustable design can improve the performance and stability of the entire trimming device. Precise limit control helps reduce the offset and vibration of the film curtain during transmission, thereby improving cutting accuracy and product quality. At the same time, the flexible limit adjustment capability enables the device to better adapt to different production environments and needs.

[0075] The use process of the multi-width trimming device for the hollow fiber membrane weaving machine in the embodiment of the present application is as follows: when the membrane curtain needs to be trimmed, the reel with the membrane curtain is placed in the unwinding bracket, passed under the fixed shaft, and close to the upper row track on the left side. The first limit block and the second limit block are added between the membrane curtain and the lower row track on the right side. The membrane curtain is passed under the power assembly, cutting assembly, and winding mechanism, and finally wound and fixed on the winding mechanism. Between the power assembly and the cutting assembly, the membrane curtain is fixed on the left and right by the third limit block and the fourth limit block. Between the cutting assembly and the winding mechanism, the membrane curtain is fixed on the left and right by the fifth limit block and the sixth limit block. Through the above technical solution, the smooth advancement and limiting functions required for trimming are met.

[0076] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the disclosure of the specification and examples. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in this disclosure.

Claims

1. A multi-width trimming device for a hollow fiber membrane braiding machine, characterized in that: include: Unwinding assembly (10), position limiting discrete assembly (20) and track (30); The unwinding assembly (10) is fixed to one end of the track (30), a power assembly (40) is provided at the other end of the track (30), a cutting assembly (50) is provided on the side of the power assembly (40) away from the track (30), and a winding mechanism (60) is provided on the side of the cutting assembly (50) away from the power assembly (40); The track (30) is arranged in two parallel rows, one end of the film curtain is wound and connected to the unwinding assembly (10), and the other end passes through the power assembly (40) and the cutting assembly (50) along the extension direction of the track (30) to the winding mechanism (60), and is wound on the winding mechanism (60); The position-limiting discrete component (20) comprises: a first position-limiting block (21), a second position-limiting block (22), a third position-limiting block (23), a fourth position-limiting block (24), a fifth position-limiting block (25), and a sixth position-limiting block (26); The first limiting block (21), the second limiting block (22), the fourth limiting block (24) and the sixth limiting block (26) are all in contact with the non-cutting side of the film curtain; the third limiting block (23) and the fifth limiting block (25) are all in contact with the cutting side of the film curtain.

2. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 1, characterized in that: The track (30) includes an upper track (31) and a lower track (32), the membrane curtain is laid flat between the upper track (31) and the lower track (32), and is in contact with the upper track (31), and has a distance between the membrane curtain and the lower track (32); The first limit block (21) and the second limit block (22) are both arranged between the film curtain and the lower row track (32); the first limit block (21) is close to the unwinding component (10), and the second limit block (22) is close to the power component (40).

3. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 2, characterized in that: The position-limiting discrete component (20) further includes: a fixed shaft (27); The fixed shaft (27) is arranged between the first limit block (21) and the second limit block (22); the two ends of the fixed shaft (27) are respectively rotatably fixed on the upper row track (31) and the lower row track (32), and the film curtain passes under the fixed shaft (27).

4. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 2, characterized in that: The third limit block (23) and the fourth limit block (24) are both arranged between the power assembly (40) and the cutting assembly (50), the third limit block (23) is arranged at one end close to the upper row track (31), and the fourth limit block (24) is arranged at one end close to the lower row track (32).

5. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 2, characterized in that: The fifth limit block (25) and the sixth limit block (26) are both arranged between the cutting assembly (50) and the winding mechanism (60), the fifth limit block (25) is arranged at one end close to the upper row track (31), and the sixth limit block (26) is arranged at one end close to the lower row track (32).

6. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 1, characterized in that: The unwinding assembly (10) comprises: a workbench (11) and an unwinding bracket (13); The workbench (11) is provided with a clamping hole (12), and the unwinding bracket (13) is clamped with the workbench (11) through the clamping hole (12). A reel (70) is sleeved on the unwinding bracket (13), and the film curtain is wound on the reel (70).

7. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 6, characterized in that: The unwinding bracket (13) comprises a first curved portion (131), a second curved portion (132) and a third curved portion (133); One end of the first curved portion (131) penetrates the clamping hole (12), and the bending portion of the first curved portion (131) is clamped and fixed to the workbench (11), and the angle of the first curved portion is less than 45°; The angle of the second curved portion (132) ranges from 45° to 135°; The angle of the third curved portion (133) ranges from 70° to 180°.

8. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 7, characterized in that: The unwinding bracket (13) is an integrally formed symmetrical structure; There are two clamping holes (12), which respectively correspond to the positions of the two first curved portions (131) of the unwinding bracket (13).

9. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 1, characterized in that: The mass of the first limiting block (21), the second limiting block (22), the third limiting block (23), the fourth limiting block (24), the fifth limiting block (25), and the sixth limiting block (26) is greater than 100g.

10. The multi-width trimming device for a hollow fiber membrane braiding machine according to claim 1, characterized in that: The first limiting block (21) and the second limiting block (22) are composed of a plurality of limiting pieces (28), and the number of the limiting pieces (28) is adjustable.

Images