Film-coated filter bag cutting device

Abstract

The utility model relates to filter bag cutting equipment technical field, and disclose a kind of film filter bag cutting device, including two fixed plate, two fixed plate between fixed mounting has cutting table, two fixed plate between are sequentially equipped with transmission unit, tensioning roller, guide roller, driving roller, cutting unit, pressing unit and positioning blanking unit, tensioning roller both ends are rotatably connected with first sliding seat, two cutting table side are all penetrated and are equipped with the first sliding groove of adaptation with first sliding seat, first sliding groove is fixedly installed with the guide column of penetrating first sliding seat, guide column side surface is equipped with spring in first sliding seat upper portion. In the utility model, by setting tensioning roller, spring always has a downward thrust to first sliding seat, first sliding seat slides in first sliding groove, realize that tensioning roller plays the effect of tensioning to film filter bag, reduce the wrinkle situation of film filter bag in conveying process, to further improve the precision when cutting to film filter bag.

Description

Technical Field

[0001] This utility model relates to the technical field of filter bag cutting equipment, specifically a membrane filter bag cutting device. Background Technology

[0002] In the industrial production field, membrane filter bags have been widely used in environmental protection projects such as dust removal and waste gas purification due to their excellent filtration performance. The quality of membrane filter bags directly affects the filtration effect, and the cutting process, as a key link in the production process of membrane filter bags, plays a decisive role in the subsequent sewing, installation and final filtration performance.

[0003] A search revealed a patent, CN213562832U, which discloses a cutting fixture for producing dust collector filter bags. The fixture includes a support frame, a fixture table fixedly connected to the top of the support frame, a first drive motor fixedly connected to one side of the fixture table, several transmission shafts inside the fixture table (one end of each shaft rotatably connected to the output of the drive motor), a fixing frame fixedly connected to one side of the top of the fixture table, two second drive motors fixedly connected to one side of the fixing frame, two pressing shafts corresponding to the positions of the second drive motors inside the fixing frame, a fixing mechanism fixedly connected to one side of the fixing mechanism, a cutting mechanism fixedly connected to one side of the fixing mechanism, a conveying mechanism fixedly connected to one side of the fixture table, and a control panel fixedly connected to the other side of the fixture table. This utility model provides a cutting fixture for producing dust collector filter bags. Through a timer controlled by the control panel, the fixing mechanism first fixes the filter bag, the cutting mechanism cuts the filter bag, and the conveying mechanism collects the cut filter bag, ensuring neat cuts and improving work efficiency.

[0004] The aforementioned patents have significant beneficial effects, but in practical application, they still have the following shortcomings:

[0005] In the aforementioned comparative document, the filter bags to be cut are conveyed to the cutting mechanism via a conveyor belt, and the filter bags are cut into segments by a cutting blade. However, in reality, because the filter bags are soft, they may bend on the conveyor belt in the aforementioned comparative document. When the filter bags are flattened, they may wrinkle, resulting in a decrease in the accuracy of the length of the filter bags after segmented cutting. Therefore, there is an urgent need in the art to improve the membrane filter bag cutting device to solve the defects of the prior art. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a membrane filter bag cutting device that reduces wrinkles in membrane filter bags during transport and improves the accuracy of cutting membrane filter bags.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a membrane filter bag cutting device, comprising two symmetrical fixed plates, a cutting table fixedly installed between the two fixed plates, and a transmission unit, a tension roller, a guide roller, a drive roller, a cutting unit, a pressing unit, and a positioning and feeding unit arranged sequentially between the two fixed plates;

[0008] The transmission unit is used to transmit the medium to be cut. The height of the tension roller is lower than that of the transmission unit and the guide roller. The tension roller can move up and down. The position of the guide roller is adapted to one end of the cutting table. The drive roller is located above one end of the cutting table and is used to transmit the medium to be cut to the cutting table. A fixed seat is fixedly installed between the upper parts of the two fixed plates. The cutting unit is slidably connected to the lower part of the fixed seat and is used to cut the medium to be cut. The pressing unit is located on one side of the cutting unit and is used to press the medium to be cut. The positioning and unloading unit is located on the upper part of the cutting table and is used to position the medium to be cut and push it out of the cutting table.

[0009] Both ends of the tension roller are rotatably connected to a first sliding seat. The sides of the two cutting tables are provided with a first sliding groove that is adapted to the first sliding seat. A guide post that passes through the first sliding seat is fixedly installed in the first sliding groove. A spring located on the upper part of the first sliding seat is sleeved on the side of the guide post.

[0010] Preferably, the transmission unit includes a fixed transmission roller and a movable transmission roller disposed between two fixed plates and capable of rotation, and a first drive motor for driving the fixed transmission roller to rotate is fixedly mounted on one side of the fixed plate.

[0011] Preferably, both ends of the drive roller and the movable transmission roller are rotatably connected to a second sliding seat. The sides of both fixed plates are provided with a second sliding groove adapted to the second sliding seat. The upper part of the fixed plate is rotatably connected to a first adjusting bolt threaded to the second sliding seat. The upper side of the first adjusting bolt is threaded with a first limiting nut. A second drive motor for driving the drive roller to rotate is fixedly installed on the side of one of the second sliding seats.

[0012] Preferably, the cutting unit includes a movable frame located at the bottom of the fixed base, a cutting blade rotatably connected inside the movable frame, and a third drive motor for driving the cutting blade to rotate is fixedly installed on the side of the movable frame.

[0013] Preferably, an adjusting block is fixedly installed on the upper part of the movable frame, and an adjusting groove adapted to the adjusting block is opened on the lower part of the fixed seat. An adjusting screw threadedly connected to the adjusting block is rotatably connected in the adjusting groove, and a fourth drive motor for driving the adjusting screw to rotate is fixedly installed at one end of the fixed seat.

[0014] Preferably, the clamping unit includes a connecting plate fixedly installed on one side of the fixed base, a second telescopic device with a telescopic effect fixedly installed on the lower part of the connecting plate, and a clamping plate fixedly installed on the lower end of the telescopic device.

[0015] Preferably, the positioning and unloading unit includes a first telescopic device that is fixedly installed on the upper part of the cutting table and has a telescopic effect. The first telescopic device is provided with an L-shaped positioning ejector.

[0016] Preferably, a sliding bar is fixedly installed on the side of the positioning ejector frame near the first telescopic device, and a sliding groove adapted to the sliding bar is opened at the telescopic end of the first telescopic device, and a positioning bolt with one end abutting against the side of the sliding bar passes through the side of the telescopic end of the first telescopic device.

[0017] Preferably, two symmetrical positioning plates are provided between the drive roller and the fixed seat. The lower part of the positioning plate abuts against the upper part of the cutting table. A second adjusting bolt is threaded through and threaded onto both fixed plates, with one end of the bolt rotatably connected to the side of the positioning plate. A second limiting nut is threaded onto the side of the second adjusting bolt.

[0018] To address the shortcomings of existing technologies, this utility model provides a membrane filter bag cutting device, which overcomes the deficiencies of existing technologies. The beneficial effects of this utility model are as follows:

[0019] 1. In this utility model, by setting a tension roller, the spring always exerts a downward thrust on the first sliding seat, and the first sliding seat slides in the first sliding groove, so that the tension roller can tension the coated filter bag, reduce the occurrence of wrinkles in the coated filter bag during the conveying process, and thus improve the accuracy of cutting the coated filter bag.

[0020] 2. In this utility model, by rotating the first adjusting bolt, the distance between the drive roller and the cutting table, as well as the distance between the movable transmission roller and the fixed transmission roller, can be adjusted, which enables the conveying and cutting of coated filter bags of different thicknesses, thereby improving the applicability of cutting coated filter bags.

[0021] 3. In this utility model, by setting a first telescopic device, the positioning and ejecting frame can be moved on the cutting table. One side of the positioning and ejecting frame can position the end of the membrane filter bag and push the cut membrane filter bag out of the cutting table. At the same time, by sliding the sliding bar in the groove, the position of the positioning and ejecting frame on the cutting table can be adjusted, which facilitates the adjustment of the cutting length of the membrane filter bag and improves the applicability of the cutting device.

[0022] 4. In this utility model, the setting of two positioning plates effectively prevents the ends of the membrane filter bag from being uneven during cutting, thus improving the effect of cutting the membrane filter bag. Furthermore, the distance between the two positioning plates can be adjusted by the second adjusting bolt, enabling the positioning and conveying of membrane filter bags with different outer diameters.

[0023] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0024] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the positioning and ejection frame in this utility model;

[0027] Figure 3 This is a partial cross-sectional view of the cutting table in this utility model.

[0028] Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle;

[0029] Figure 5 for Figure 2 Enlarged structural diagram at point B;

[0030] Figure 6 for Figure 3 Enlarged structural diagram at point C;

[0031] Figure 7 for Figure 3 Enlarged structural diagram at point D.

[0032] In the diagram: 1. Fixed plate; 2. Cutting table; 3. Tensioning roller; 4. Guide roller; 5. Drive roller; 6. Cutting unit; 7. Positioning and unloading unit; 8. Fixed seat; 9. First sliding seat; 10. First sliding groove; 11. Spring; 12. Guide column; 13. Fixed transfer roller; 14. First drive motor; 15. Movable transfer roller; 16. Second sliding seat; 17. Second sliding groove; 18. Second drive motor; 19. First adjusting bolt; 20. First limit switch 21. Nut; 22. Moving frame; 23. Cutting blade; 24. Third drive motor; 25. Adjusting block; 26. Adjusting groove; 27. Adjusting screw; 28. Fourth drive motor; 29. ​​First telescopic device; 30. Positioning ejector frame; 31. Sliding bar; 32. Slide groove; 33. Positioning bolt; 34. Connecting plate; 35. Second telescopic device; 36. Pressing plate; 37. Positioning plate; 38. Second adjusting bolt; 39. Second limit nut; 30. Transmission unit. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] Please see Figures 1-7A membrane filter bag cutting device includes two symmetrical fixed plates 1, with a cutting table 2 fixedly installed between the two fixed plates 1. Between the two fixed plates 1, a transmission unit 39, a tension roller 3, a guide roller 4, a drive roller 5, a cutting unit 6, a pressing unit, and a positioning and unloading unit 7 are arranged sequentially. The transmission unit 39 is used to transmit the medium to be cut. The height of the tension roller 3 is lower than that of the transmission unit 39 and the guide roller 4, and the tension roller 3 can move up and down. The position of the guide roller 4 is adapted to one end of the cutting table 2. The drive roller 5 is located above one end of the cutting table 2 and is used to transmit the medium to be cut. A fixed seat 8 is fixedly installed between the upper parts of the two fixed plates 1. The cutting unit 6 slides... A clamping unit is located on one side of the cutting unit 6 and is used to clamp the medium to be cut. A positioning and unloading unit 7 is located on the upper part of the cutting table 2 and is used to position the medium to be cut and push it out of the cutting table 2. Both ends of the tension roller 3 are rotatably connected to the first sliding seat 9. The sides of both cutting tables 2 are provided with first sliding grooves 10 that are adapted to the first sliding seat 9. A guide post 12 that passes through the first sliding seat 9 is fixedly installed in the first sliding groove 10. A spring 11 located on the upper part of the first sliding seat 9 is sleeved on the side of the guide post 12. The transmission unit 39 includes a fixed transmission roller 13 that is located between the two fixed plates 1 and can rotate. The movable conveyor roller 15 and the fixed plate 1 are fixedly mounted on one side with a first drive motor 14 for driving the fixed conveyor roller 13 to rotate. The drive roller 5 and the movable conveyor roller 15 are rotatably connected to their ends with second sliding seats 16. The sides of both fixed plates 1 have through-cut second sliding grooves 17 adapted to the second sliding seats 16. The upper part of the fixed plate 1 is rotatably connected to a first adjusting bolt 19 threadedly connected to the second sliding seat 16. The upper side of the first adjusting bolt 19 is threaded with a first limiting nut 20. A second drive motor 18 for driving the drive roller 5 to rotate is fixedly mounted on the side of one of the second sliding seats 16. The cutting unit 6 includes a movable frame 21 located at the lower part of the fixed seat 8. A cutting blade 22 is rotatably connected to the inner part of the frame 21. A third drive motor 23 for driving the cutting blade 22 to rotate is fixedly installed on the side of the moving frame 21. An adjusting block 24 is fixedly installed on the upper part of the moving frame 21. An adjusting groove 25 adapted to the adjusting block 24 is opened at the lower part of the fixed seat 8. An adjusting screw 26 threadedly connected to the adjusting block 24 is rotatably connected in the adjusting groove 25. A fourth drive motor 27 for driving the adjusting screw 26 to rotate is fixedly installed at one end of the fixed seat 8. The pressing unit includes a connecting plate 33 fixedly installed on one side of the fixed seat 8. A second telescopic device 34 with telescopic effect is fixedly installed at the lower part of the connecting plate 33. A pressing plate 35 is fixedly installed at the lower end of the telescopic device 34.

[0036] In this specific implementation embodiment: When the coated filter bag needs to be cut, the produced coated filter bag is conveyed to the transmission unit 39. The first drive motor 14 is turned on, and the coated filter bag is located between the fixed transmission roller 13 and the movable transmission roller 15. The movable transmission roller 15 presses the coated filter bag, and the first drive motor 14 is turned on. The output end of the first drive motor 14 drives the fixed transmission roller 13 to rotate, conveying the coated filter bag. The coated filter bag is coiled around the lower part of the tension roller 3 and extends to the upper part of the guide roller 4. The coated filter bag is located between the cutting table 2 and the drive roller 5. The second drive motor 18 is turned on, and the output end of the second drive motor 18 drives the drive roller 5 to rotate, conveying the coated filter bag. The drive roller 5 also applies pressure to the coated filter bag and flattens it. The spring 11 always exerts a downward thrust on the first sliding seat 9. The first sliding seat 9 slides in the first sliding groove 10, so that the tension roller 3 can tension the coated filter bag, reducing the weight of the coated filter bag. During the conveying process, wrinkles may occur, thereby improving the accuracy of cutting the membrane filter bag. The guide post 12 is used to prevent radial deformation of the spring 11. One end of the membrane filter bag is positioned with the positioning and feeding unit 7. The conveying of the membrane filter bag is stopped, and the second telescopic device 34 is activated. The telescopic end of the second telescopic device 34 drives the pressing plate 35 to move down and press the membrane filter bag. The third drive motor 23 is activated. The output end of the third drive motor 23 drives the cutting blade 22 to rotate. The fourth drive motor 27 is started. The output end of the fourth drive motor 27 drives the adjusting screw 26 to rotate. When the adjusting screw 26 rotates, it drives the adjusting block 24 to slide in the adjusting groove 25. The adjusting block 24 drives the moving frame 21 to move. When the moving frame 21 moves, the membrane filter bag is cut by the cutting blade 22. After the membrane filter bag is cut, the cut membrane filter bag is pushed out of the cutting table 2 by the positioning and feeding unit 7 and returned to its original position.

[0037] When it is necessary to convey and cut coated filter bags of different thicknesses, several first adjusting bolts 19 are rotated simultaneously and synchronously. When the first adjusting bolts 19 rotate, they drive the second sliding seat 16 to slide in the second sliding groove 17, thereby adjusting the distance between the drive roller 5 and the cutting table 2, as well as the distance between the movable transmission roller 15 and the fixed transmission roller 13. This enables the conveying and cutting of coated filter bags of different thicknesses, thus improving the applicability of cutting coated filter bags.

[0038] Example 2

[0039] Please see Figures 1-3 and Figure 5This embodiment includes the above embodiment, and further includes: the positioning and unloading unit 7 includes a first telescopic device 28 fixedly installed on the upper part of the cutting table 2 and having a telescopic effect. The first telescopic device 28 is telescopically provided with an L-shaped positioning push-out frame 29. A sliding strip 30 is fixedly installed on the side of the positioning push-out frame 29 near the first telescopic device 28. A groove 31 adapted to the sliding strip 30 is opened at the telescopic end of the first telescopic device 28. A positioning bolt 32 with one end abutting against the side of the sliding strip 30 passes through the side of the telescopic end of the first telescopic device 28.

[0040] In this embodiment, the positioning and ejecting frame 29 is L-shaped, with one end of the membrane-coated filter bag abutting against one side of the positioning and ejecting frame 29. In practice, a sensing device can be fixedly installed on one side of the positioning and ejecting frame 29. The sensing device is a known technology. The sensing device senses one end of the membrane-coated filter bag. When the sensing device senses that one end of the membrane-coated filter bag abuts against one side of the positioning and ejecting frame 29, it transmits a signal to the first drive motor 14, the second drive motor 18, the fourth drive motor 27, and the third drive motor 23, stopping the conveying of the membrane-coated filter bag and cutting the membrane-coated filter bag. After the membrane-coated filter bag is cut, the first telescopic device 28 is activated. The telescopic end of the telescopic device 28 drives the positioning ejector 29 to move, pushing the cut membrane filter bag out of the cutting table 2. This eliminates the need for manual removal of the cut membrane filter bag, improving the efficiency of cutting the membrane filter bag. Furthermore, by moving the positioning ejector 29, the sliding bar 30 slides in the slide groove 31, adjusting the position of the positioning ejector 29 on the cutting table 2. The positioning bolt 32 is threaded to the telescopic end of the first telescopic device 28, with one end of the positioning bolt 32 tightly abutting against the side of the sliding bar 30, limiting and fixing the position of the positioning ejector 29. This facilitates the adjustment of the cutting length of the membrane filter bag, increasing the applicability of the cutting device.

[0041] Example 3

[0042] Please see Figure 1 , Figure 2 and Figure 6 This embodiment includes all the above embodiments, and further includes: two symmetrical positioning plates 36 are provided between the drive roller 5 and the fixed seat 8. The lower part of the positioning plate 36 abuts against the upper part of the cutting table 2. A second adjusting bolt 37 is threaded through and threaded on both fixed plates 1, one end of which is rotatably connected to the side of the positioning plate 36. A second limiting nut 38 is threadedly connected to the side of the second adjusting bolt 37.

[0043] In this embodiment, the membrane filter bag is positioned between two positioning plates 36 during transport. The two positioning plates 36 position the membrane filter bag during transport. When cutting membrane filter bags of different outer diameters, the second adjusting bolt 37 is rotated to move the positioning plates 36, adjusting the distance between the two positioning plates 36. Then, the second limiting nut 38 is tightened to limit and fix the position of the positioning plates 36. This allows for the positioning and transport of membrane filter bags of different outer diameters. The two positioning plates 36 effectively prevent unevenness at the ends of the membrane filter bags during cutting, improving the cutting effect.

[0044] All of the electrical products mentioned above can be purchased from the market. They are mature technologies and have been fully disclosed, so they will not be repeated in the instruction manual. All of the electrical products mentioned above are equipped with power cords, and they are electrically connected to the external main controller and 220V phase voltage (or 380V line voltage) through the power cords. The main controller can be a conventional known device such as a computer that plays a control role.

[0045] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A membrane filter bag cutting device, comprising two symmetrical fixing plates (1), with a cutting table (2) fixedly installed between the two fixing plates (1), characterized in that, Between the two fixed plates (1), there are a transmission unit (39), a tension roller (3), a guide roller (4), a drive roller (5), a cutting unit (6), a pressing unit, and a positioning and unloading unit (7). Among them, the transmission unit (39) is used to transmit the medium to be cut, the height of the tension roller (3) is lower than that of the transmission unit (39) and the guide roller (4), the tension roller (3) can move up and down, the position of the guide roller (4) is adapted to one end of the cutting table (2), the drive roller (5) is located above one end of the cutting table (2) to transmit the medium to be cut on the cutting table (2), a fixed seat (8) is fixedly installed between the upper parts of the two fixed plates (1), the cutting unit (6) is slidably connected to the lower part of the fixed seat (8) and is used to cut the medium to be cut, the pressing unit is located on one side of the cutting unit (6) and is used to press the medium to be cut, and the positioning and unloading unit (7) is located on the upper part of the cutting table (2) and is used to position the medium to be cut and push out the cutting table (2); The tension roller (3) is rotatably connected to the first sliding seat (9) at both ends. The two cutting tables (2) are provided with a first sliding groove (10) adapted to the first sliding seat (9) on both sides. A guide post (12) that passes through the first sliding seat (9) is fixedly installed in the first sliding groove (10). A spring (11) located on the upper part of the first sliding seat (9) is sleeved on the side of the guide post (12).

2. The membrane filter bag cutting device according to claim 1, characterized in that, The transmission unit (39) includes a fixed transmission roller (13) and a movable transmission roller (15) that are rotatable and located between two fixed plates (1). A first drive motor (14) for driving the fixed transmission roller (13) to rotate is fixedly mounted on one side of the fixed plate (1).

3. The membrane filter bag cutting device according to claim 2, characterized in that, The drive roller (5) and the movable transmission roller (15) are rotatably connected to the second sliding seat (16) at both ends. The two fixed plates (1) are provided with a second sliding groove (17) adapted to the second sliding seat (16) through the side. The upper part of the fixed plate (1) is connected to the first adjusting bolt (19) threadedly connected to the second sliding seat (16). The upper side of the first adjusting bolt (19) is threadedly connected to the first limiting nut (20). A second drive motor (18) for driving the drive roller (5) to rotate is fixedly installed on the side of one of the second sliding seats (16).

4. The membrane filter bag cutting device according to claim 1, characterized in that, The cutting unit (6) includes a movable frame (21) located at the bottom of the fixed base (8), a cutting blade (22) is rotatably connected inside the movable frame (21), and a third drive motor (23) for driving the cutting blade (22) to rotate is fixedly installed on the side of the movable frame (21).

5. The membrane filter bag cutting device according to claim 4, characterized in that, An adjusting block (24) is fixedly installed on the upper part of the movable frame (21), and an adjusting groove (25) adapted to the adjusting block (24) is opened on the lower part of the fixed seat (8). An adjusting screw (26) that is threadedly connected to the adjusting block (24) is rotatably connected in the adjusting groove (25), and a fourth drive motor (27) for driving the adjusting screw (26) to rotate is fixedly installed at one end of the fixed seat (8).

6. The membrane filter bag cutting device according to claim 1, characterized in that, The clamping unit includes a connecting plate (33) fixedly installed on one side of the fixed base (8), and a second telescopic device (34) with telescopic effect is fixedly installed on the lower part of the connecting plate (33). A clamping plate (35) is fixedly installed on the lower end of the telescopic device (34).

7. The membrane filter bag cutting device according to claim 1, characterized in that, The positioning and unloading unit (7) includes a first telescopic device (28) that is fixedly installed on the upper part of the cutting table (2) and has a telescopic effect. The first telescopic device (28) is provided with an L-shaped positioning ejector (29).

8. The membrane filter bag cutting device according to claim 7, characterized in that, A sliding bar (30) is fixedly installed on the side of the positioning ejector (29) near the first telescopic device (28). The telescopic end of the first telescopic device (28) is provided with a sliding groove (31) that matches the sliding bar (30). A positioning bolt (32) with one end abutting against the side of the sliding bar (30) passes through the side of the telescopic end of the first telescopic device (28).

9. The membrane filter bag cutting device according to claim 1, characterized in that, Two symmetrical positioning plates (36) are provided between the drive roller (5) and the fixed seat (8). The lower part of the positioning plate (36) abuts against the upper part of the cutting table (2). A second adjusting bolt (37) is threaded through and threaded onto both fixed plates (1), with one end rotatably connected to the side of the positioning plate (36). A second limiting nut (38) is threaded onto the side of the second adjusting bolt (37).

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