A high-precision slitting device for easily degradable self-hygroscopic composite film

Abstract

The present application relates to the technical fields of composite film slitting, and particularly relates to a high-precision slitting device for easily-degradable self-hygroscopic composite film, which comprises a unwinding mechanism, a slitting mechanism and a discharging mechanism; the present application can solve the following technical problems: the fixed-position slitting knife for transverse fixed-length cutting cannot quickly adjust the distance between the slitting knives according to production requirements, thereby resulting in poor adaptability; a small amount of filler particles can fall off from the cut section and continuously adhere and accumulate on the blade, and since the blade of the slitting knife cannot be cleaned for a long time, the sharpness of the blade is easily reduced, thereby affecting the slitting precision; the present application can adjust the distance between multiple rotary knives at equal intervals according to slitting requirements, effectively improve the adaptability range of the present application, and is convenient to operate; the present application can remove the hygroscopic filler particles on the surface of the rotary knife and collect the hygroscopic filler through the negative pressure mode, thereby effectively preventing the hygroscopic filler from falling downward on the surface of the composite film and affecting the subsequent use effect.

Description

Technical Field

[0001] This invention relates to the field of composite film slitting technology, and in particular to a high-precision slitting device for easily degradable self-moisturizing composite films. Background Technology

[0002] Degradable self-absorbing composite film is a new type of pharmaceutical packaging material that is gradually being promoted and applied in the outer packaging of oral preparations, injections and other pharmaceuticals. This composite film uses biodegradable polymer materials as the base material and has a moisture-absorbing functional layer inside. It can actively absorb moisture inside the packaging to maintain the low humidity environment required for drug storage, and the base material can degrade after disposal to prevent environmental pollution. In the slitting process of self-absorbing composite film, the wide master roll is usually longitudinally slit into finished rolls of a specified width along the material feeding direction, and then the finished rolls flow into the next process. The dimensional accuracy and cut quality of the composite film during slitting directly determine the performance of the finished composite film.

[0003] In the existing technology, many technical personnel in related fields have proposed a number of technical solutions for slitting composite films. For example, Chinese Patent No. CN219338782U discloses a slitting machine for processing medical packaging bags, which mainly consists of a conveyor table, an auxiliary conveying mechanism, a slitting mechanism, an suction mechanism, and a collection box. The slitting mechanism includes a slitting blade, and a matching slitting blade groove is opened on the surface of the conveyor table. When in use, the roll of composite film is clamped and pulled forward by the auxiliary conveying mechanism. After reaching the set length, the slitting mechanism drives the slitting blade to move down and cooperate with the slitting blade groove to complete the transverse fixed-length cutting of the composite film. The cut sheet-like finished products are adsorbed by the suction mechanism and transferred to the side collection box to realize automatic slitting and sorting collection.

[0004] However, the aforementioned existing technologies still have some shortcomings in the process of slitting composite films: 1. The existing technology described above uses a fixed-position slitting blade for horizontal fixed-length cutting. However, the number and spacing of the slitting blades cannot be quickly adjusted, and it can only complete the cutting of composite films of a single specification. It cannot quickly adjust the spacing of the slitting blades according to production needs, resulting in poor adaptability.

[0005] 2. Furthermore, when the slitting blade cuts the composite film, the blade will come into contact with the moisture-absorbing filler inside the composite film. A small amount of filler particles will fall off from the cut surface and continue to adhere and accumulate on the blade. Since the blade of the slitting blade is not cleaned for a long time, it is easy to cause a decrease in blade sharpness and an increase in shearing resistance, which can easily aggravate the burrs on the cut and the reduction in dimensional accuracy. At the same time, the scattered filler particles are also easy to adhere to the surface of the film material, which cannot meet the clean production requirements of pharmaceutical packaging materials.

[0006] Therefore, based on the above-mentioned viewpoints, there is still room for improvement in existing composite membrane slitting methods. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a high-precision slitting device for easily degradable self-absorbing composite films, comprising a support frame, an unwinding mechanism, a slitting mechanism, and a discharge mechanism mounted on the support frame. The unwinding mechanism and the discharge mechanism are located on opposite sides of the slitting mechanism. The unwinding mechanism carries the unwinding roller, allowing the film material on the unwinding roller to pass sequentially through the slitting mechanism and the discharge mechanism before being collected by an external winding device. The slitting mechanism cuts the film material into multiple strips of equal width at equal intervals. The discharge mechanism outputs the multiple strips of composite films to the winding device in an alternating manner, preventing the moisture-absorbing filler particles from spilling out due to friction between the cut edges of adjacent composite films. The slitting mechanism includes multiple rotary cutters for slitting the film material, and an adjustment unit for adjusting the spacing between the multiple rotary cutters. The slitting mechanism also includes a cleaning unit for real-time cleaning of the rotary cutters. Before the rotary cutters slit the film material, the spacing between the multiple rotary cutters is adjusted by the adjustment unit according to the slitting requirements. The spacing between adjacent rotary cutters is the width of the strip-shaped composite film after slitting. When the rotary cutters slit the film material, the cleaning unit cleans the blades of the rotary cutters in real time to prevent moisture-absorbing filler particles from being electrostatically adsorbed on the blade surface, affecting its sharpness and slitting accuracy.

[0008] Preferably, the slitting mechanism further includes a rotating roller that moves through multiple rotary cutters, the rotating roller being driven to rotate by a control motor; The adjustment unit includes multiple sliding grooves formed on the outer wall of the rotary roller. The sliding grooves correspond to the positions of the rotary cutter. The inner wall of the rotary cutter is provided with a connecting block that is slidably assembled in the sliding groove through a linkage ring. A double-ended screw is rotatably provided on the rotary roller that rotates through the sliding groove. The double-ended screw passes through the connecting block through a threaded connection.

[0009] Preferably, the cleaning unit includes multiple operation boxes located above the rotary cutter. The operation boxes are equipped with scrapers for scraping off the blade and the moisture-absorbing filler on the side wall of the rotary cutter. The scrapers are equipped with auxiliary components for further removing the moisture-absorbing filler particles.

[0010] Preferably, the rotary cutter located in the middle of the rotating roller is engaged with the outer wall of the rotating roller by a linkage ring. The outer wall of the double-headed screw is symmetrically provided with multiple sets of transmission threads located in the sliding groove. The pitch of the multiple transmission threads gradually increases towards the end of the rotating roller. When the double-headed screw rotates, the rotary cutter can be adjusted at equal intervals by multiple connecting blocks through the transmission threads with different pitches.

[0011] Preferably, the lower end of the scraper is inclined and the inclination direction is opposite to the rotation direction of the rotary cutter, which is beneficial to scraping off the moisture-absorbing filler on the blade and side wall of the rotary cutter. The scraper is provided with a V-shaped relief groove to allow the rotary cutter to pass. The inner wall of the V-shaped clearance groove is provided with an execution plate that slides in contact with the blade and side wall of the rotary cutter. The upper end of the execution plate is an inclined section, which is used to guide the scraped moisture-absorbing filler to the scraper for collection.

[0012] Preferably, the auxiliary component includes two collection hoppers mounted on the upper end of the scraper and symmetrically distributed along the rotary cutter. Multiple roller brushes are rotatably mounted on the collection hoppers, and the roller brushes contact the side wall of the rotary cutter and the outer wall of the execution plate.

[0013] Preferably, the auxiliary component further includes a bellows installed on the upper end of the control box. The bellows is connected to two collection hoppers through a connecting pipe. Two filter elements are symmetrically arranged inside the bellows in a detachable manner. A rectangular filter screen is installed in the middle of the bellows. An air pump is installed at the upper end of the bellows, and the air pump's suction end extends into the interior of the rectangular filter screen.

[0014] Preferably, the discharge mechanism includes a connecting frame installed on the upper end of the support frame, and a telescopic pressure roller is rotatably provided on the lower end of the connecting frame via a support column. The telescopic pressure roller is used to press the slit strip composite film downwards to different heights for staggered discharge.

[0015] Preferably, the outer wall of the rotary cutter is symmetrically provided with two connecting rings, and the lower end of the operating box is equipped with an annular sleeve that is slidably assembled with the connecting rings. The rotary cutter can drive the operating box to move along the axis of the rotating roller through the connecting rings and the annular sleeve.

[0016] Preferably, the support frame is also rotatably mounted with tension rollers located on both sides of the rotating roller. One tension roller is located above the film material to press the film material down, and the other tension roller is located below the film material to push the film material up. The film material between the two tension rollers is kept taut to facilitate high-precision cutting of the film material by the rotary cutter.

[0017] In summary, this application includes the following beneficial technical effects: I. This invention controls the rotation of a double-headed screw with different pitches, which in turn drives multiple rotary cutting blades to be adjusted at equal intervals via a connecting block connected to the screw. This allows for equal adjustment of the spacing between the multiple rotary cutting blades according to the slitting requirements, effectively improving the applicability of this invention and making it easy to operate.

[0018] Second, this invention uses an execution plate to scrape off the moisture-absorbing filler particles from the surface of the rotary cutter. The rotating roller brush can brush off the moisture-absorbing filler particles remaining on the surface of the rotary cutter and between the rotary cutter and the execution plate. At the same time, by forming a negative pressure in the collection hopper to absorb the scraped moisture-absorbing filler particles, it effectively prevents the moisture-absorbing filler from falling down onto the surface of the composite film and affecting the subsequent use effect, and avoids the moisture-absorbing filler particles from continuously adhering to the blade of the rotary cutter, affecting its sharpness and cutting accuracy.

[0019] Third, this invention uses multiple telescopic pressure rollers of different heights to press the strip-shaped composite film downwards to different heights, so that multiple strip-shaped composite films are discharged in an alternating manner, which effectively prevents the cut edges of the strip-shaped composite films from rubbing against each other, causing the moisture-absorbing filler particles to fall off and affect the moisture absorption effect of the composite film. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the slitting mechanism of the present invention.

[0023] Figure 3 This is the present invention. Figure 2 A magnified view of part A.

[0024] Figure 4 This is a schematic diagram of the structure between the double-headed screw and the rotating roller of the present invention.

[0025] Figure 5 This is a schematic diagram of the cleaning unit of the present invention.

[0026] Figure 6 This is a schematic diagram of the structure between the rotary cutter, scraper, and execution plate of the present invention.

[0027] Figure 7 This is the present invention. Figure 2 A magnified view of section B.

[0028] Figure 8 This is a schematic diagram of the structure between the operating box, scraper, collecting hopper and bellows of the present invention.

[0029] Figure 9 This is a diagram showing the working state of the moisture-absorbing filler particles of the present invention being discharged into the air box along the collection hopper and connecting pipe.

[0030] Figure 10 This is the present invention. Figure 8 A magnified view of a portion of point C.

[0031] In the diagram, 1 is the support frame; 11 is the tension roller. 2. Unwinding mechanism; 21. Unwinding roller; 22. Vertical plate; 23. U-shaped frame; 3. Slitting mechanism; 31. Rotary cutter; 32. Adjustment unit; 321. Linkage ring; 322. Connecting block; 323. Double-headed screw; 33. Cleaning unit; 331. Control box; 332. Connecting ring; 333. Annular sleeve; 334. Truss; 335. Scraper; 336. Auxiliary components; 337. Actuation plate; 338. Collection hopper; 339. Roller brush; 340. Drive motor; 341. Air box; 342. Connecting pipe; 343. Filter element; 344. Rectangular filter screen; 345. Air pump; 35. Rotary roller; 36. Support plate; 37. Control motor; 4. Discharge mechanism; 41. Connecting frame; 42. Support column; 43. Telescopic pressure roller. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-10 The embodiments of the present invention will be described in detail below.

[0033] This application discloses a high-precision slitting device for easily degradable self-absorbing composite films. The main application of this application is in the process of slitting self-absorbing composite films. In terms of technical effect, the spacing between multiple rotary cutting blades 31 can be adjusted at equal intervals according to the slitting requirements, which effectively improves the applicability of the invention. Furthermore, this application can also remove and collect the moisture-absorbing filler particles adsorbed on the surface of the rotary cutting blades 31, effectively preventing the moisture-absorbing filler from falling down onto the surface of the composite film and affecting the subsequent use effect.

[0034] Reference Figure 1 and Figure 2 As shown, a high-precision slitting device for easily degradable self-absorbing composite films includes a support frame 1, an unwinding mechanism 2, a slitting mechanism 3, and a discharge mechanism 4 mounted on the support frame 1. The unwinding mechanism 2 and the discharge mechanism 4 are located on both sides of the slitting mechanism 3. The unwinding mechanism 2 carries the unwinding roller 21, so that the film material on the unwinding roller 21 passes through the slitting mechanism 3 and the discharge mechanism 4 in sequence and is collected by an external winding device. The slitting mechanism 3 is used to cut the film material into multiple strip-shaped composite films of equal width at equal intervals. The discharge mechanism 4 is used to output the multiple strip-shaped composite films after slitting to the winding device in an alternating manner to avoid the friction between the cut edges of adjacent composite films causing the moisture-absorbing filler particles to spill out.

[0035] The slitting mechanism 3 includes multiple rotary cutting blades 31 for slitting the membrane material, and an adjustment unit 32 for adjusting the spacing between the multiple rotary cutting blades 31. The slitting mechanism 3 also includes a cleaning unit 33 for real-time cleaning of the rotary cutting blades 31. Before the rotary cutting blades 31 slit the membrane material, the spacing between the multiple rotary cutting blades 31 is adjusted by the adjustment unit 32 according to the slitting requirements. The spacing between adjacent rotary cutting blades 31 is the width of the strip-shaped composite membrane after slitting. When the rotary cutting blades 31 slit the membrane material, the cleaning unit 33 cleans the blades of the rotary cutting blades 31 in real time to prevent the moisture-absorbing filler particles from being electrostatically adsorbed on the blade surface, affecting its sharpness and slitting accuracy.

[0036] Furthermore, in this embodiment, the unwinding mechanism 2 includes two vertical plates 22 mounted on the upper end of the support frame 1, and a U-shaped frame 23 is provided on opposite sides of the two vertical plates 22. The unwinding roller 21 is movably placed at the opening of the U-shaped frame 23 to facilitate the placement and removal of the unwinding roller 21.

[0037] In practical operation, before slitting the film material, the spacing of multiple rotary cutting blades 31 is adjusted by the adjustment unit 32 according to the slitting requirements. The spacing between adjacent rotary cutting blades 31 is the width of the strip-shaped composite film after slitting. Then, the unwinding roller 21 with the film material wound on it is placed on the unwinding mechanism 2. The end of the film material is then passed through the slitting mechanism 3 and the discharge mechanism 4 in sequence and wound onto the external winding device. When the starting end of the film material passes through the slitting mechanism 3, it moves relative to the stationary rotary cutting blades 31. The rotary cutting blades 31 can slit the film material into strip-shaped composite films. However, this slitting method cannot guarantee the width of the strip-shaped composite film. To ensure uniformity, the starting end of the strip-shaped composite film is only used for fixing it on the winding device and is not used as the part. Then, the winding device winds up the strip-shaped composite film and applies traction force. The slitting mechanism 3 controls the rotary cutter 31 to rotate and cut the film material. During this period, the multiple strip-shaped composite films after slitting are output to the winding device in an alternating manner through the discharge mechanism 4 to avoid the friction between the cut edges of adjacent composite films, which would cause the moisture-absorbing filler particles to spill out. In addition, the cleaning unit 33 cleans the blade of the rotary cutter 31 in real time to prevent the moisture-absorbing filler particles from being electrostatically adsorbed on the blade surface, affecting its sharpness and slitting accuracy.

[0038] Reference Figure 2 , Figure 3 and Figure 4As shown, in order to facilitate the high-precision cutting of the film material into multiple strip-shaped composite films of equal width, in this embodiment, the cutting mechanism 3 also includes two support plates 36 mounted on the upper end of the support frame 1. A rotating roller 35 is rotatably arranged between the two support plates 36. A control motor 37 is mounted on any one of the support plates 36 through a motor base. The output end of the control motor 37 is connected to the rotating roller 35. The adjustment unit 32 includes multiple sets of sliding grooves opened on the outer wall of the rotating roller 35 and corresponding to the position of the rotary cutter 31. Each set of sliding grooves is evenly arranged circumferentially along the axis of the rotating roller 35. A linkage ring 321 is fixedly installed on the inner wall of the rotary cutter 31. Multiple connecting blocks 322 are slidably assembled in the sliding grooves on the inner wall of the linkage ring 321. Multiple double-headed screws 323 are evenly rotatably arranged circumferentially on the rotating roller 35, rotating through the sliding grooves. The multiple double-headed screws 323 are connected by belt drive. The double-headed screws 323 pass through the connecting blocks 322 by threaded connection.

[0039] It should be noted that tension rollers 11 are also rotatably mounted on the support frame 1 on both sides of the rotating roller 35. One tension roller 11 is located above the film material to press the film material down, and the other tension roller 11 is located below the film material to push the film material up. The film material between the two tension rollers 11 is kept taut. Stable film material tension can avoid material deviation and wrinkling during slitting, which is a prerequisite for ensuring the accuracy of slitting width and the straightness of the cut, thereby ensuring high-precision slitting of the film material.

[0040] Furthermore, in this embodiment, the rotary cutter 31 located in the middle of the rotating roller 35 is engaged with the outer wall of the rotating roller 35 by the linkage ring 321. The rotary cutter 31 will not move along the axis of the rotating roller 35. The outer wall of the double-headed screw 323 is symmetrically provided with multiple sets of transmission threads located in the sliding groove. The pitch of the multiple transmission threads gradually increases towards the end of the rotating roller 35. When the double-headed screw 323 rotates, the rotary cutter 31 can be adjusted at equal intervals through multiple connecting blocks 322 via the transmission threads with different pitches. That is, with the rotary cutter 31 fixed in the middle of the rotating roller 35 as the center, the transmission pitch on both sides is distributed in an arithmetic progression. When the double-headed screw 323 rotates one revolution, the rotary cutter 31 closer to both ends of the rotating roller 35 moves a greater distance. Finally, the distance between all adjacent rotary cutters 31 expands or shrinks synchronously and always remains equal, realizing the equal interval adjustment of multiple rotary cutters 31.

[0041] When it is necessary to adjust the spacing of the rotary cutters 31, the double-ended screw 323 is rotated. The double-ended screw 323 drives multiple connecting blocks 322 to adjust at equal intervals through the transmission thread on its outer wall. The connecting blocks 322 drive the rotary cutters 31 to move synchronously through the linkage ring 321. In this way, the spacing between multiple rotary cutters 31 can be adjusted at equal intervals according to the slitting requirements, which effectively improves the applicability of the invention and is easy to operate. The double-ended screw 323 is a self-locking screw, which can automatically lock after rotation to prevent random rotation from causing changes in the spacing of the rotary cutters 31, thereby ensuring slitting accuracy.

[0042] After the spacing of the rotary cutter 31 is adjusted, the control motor 37 is started. The control motor 37 drives the rotating roller 35 and multiple rotary cutters 31 to rotate synchronously, so that the rotary cutter 31 can perform rotary cutting of the film material.

[0043] Reference Figure 3 , Figure 5 and Figure 6 As shown, in order to facilitate real-time cleaning of the blade of the rotary cutter 31, a cleaning unit 33 is also provided in this embodiment. Specifically, the cleaning unit 33 includes multiple operation boxes 331 located above the rotary cutter 31. When adjusting the spacing of the rotary cutter 31, the operation boxes 331 move synchronously with the rotary cutter 31. A truss 334 is provided between the two support plates 36. The operation boxes 331 are slidably sleeved on the truss 334 to ensure the stability of the operation boxes 331 during the sliding process. The operation box 331 is provided with a scraper 335 for scraping off the blade of the rotary cutter 31 and the moisture-absorbing filler on the side wall. An auxiliary component 336 for further removing the moisture-absorbing filler particles is installed on the scraper 335.

[0044] Furthermore, in this embodiment, the lower end of the scraper 335 is inclined, and the inclination direction is opposite to the rotation direction of the rotary cutter 31, which is beneficial for scraping off the moisture-absorbing filler on the blade and side wall of the rotary cutter 31. The scraper 335 is provided with a V-shaped relief groove to make way for the rotary cutter 31; the inner wall of the V-shaped relief groove is provided with an execution plate 337 that slides in contact with the blade and side wall of the rotary cutter 31. The upper end of the execution plate 337 is an inclined section, which is used to guide the scraped moisture-absorbing filler to the scraper 335 for collection, rather than letting it fall downward onto the film material. The execution plate 337 is preferably made of wear-resistant elastic material, which can resist the wear of moisture-absorbing filler particles and prevent scratches and wear when scraping off moisture-absorbing filler. The rotary cutter 31 has a blade. It should be noted that two connecting rings 332 are symmetrically arranged on the outer wall of the rotary cutter 31. An annular sleeve 333 is installed at the lower end of the operating box 331 and is slidably fitted with the connecting rings 332. The connecting rings 332 and the annular sleeve 333 enable the rotary cutter 31 to drive the operating box 331 to move along the axis of the rotating roller 35. The connecting rings 332 are fixed to the side wall of the rotary cutter 31 and rotate synchronously with it. The annular sleeve 333 only transmits axial thrust and does not rotate circumferentially with the connecting rings 332. When the rotary cutter 31 moves axially, the connecting rings 332 push the annular sleeve 333, which drives the operating box 331 to slide synchronously along the truss 334, ensuring that the cleaning position is always aligned with the blade.

[0045] Reference Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, in order to further remove the moisture-absorbing filler adsorbed on the surface of the rotary cutter 31, an auxiliary component 336 is provided in this embodiment. Specifically, the auxiliary component 336 includes two collection hoppers 338 mounted on the upper end of the scraper 335 and symmetrically distributed along the rotary cutter 31. The collection hopper 338 has an opening on the side near the rotary cutter 31. Multiple roller brushes 339 are rotatably mounted on the inner wall of the opening of the collection hopper 338. The roller brushes 339 are in contact with the side wall of the rotary cutter 31 and the outer wall of the execution plate 337. The multiple roller brushes 339 on the same collection hopper 338 are connected by belt drive. Any two roller brushes 339 on two collection hoppers 338 are connected by belt drive. A drive motor 340 connected to any one roller brush 339 is mounted on any collection hopper 338 through a motor cover.

[0046] Furthermore, in this embodiment, the auxiliary component 336 also includes a bellows 341 installed on the upper end of the operation box 331. The bellows 341 is connected to two collection hoppers 338 through a connecting pipe 342. Two filter elements 343 are symmetrically arranged inside the bellows 341 in a detachable manner. A rectangular filter screen 344 is installed in the middle of the bellows 341. An air pump 345 is provided at the upper end of the bellows 341. The air pump 345 extends into the interior of the rectangular filter screen 344.

[0047] During operation, when the rotary cutter 31 rotates and cuts the membrane material, a small amount of moisture-absorbing filler particles at the cut edge of the membrane material are adsorbed onto the surface of the rotary cutter 31 under electrostatic action. During this period, the rotary cutter 31 moves relative to the actuator plate 337 and the roller brush 339. Thus, when the rotary cutter 31 rubs against the actuator plate 337, the moisture-absorbing filler particles on the surface of the rotary cutter 31 can be scraped off by the actuator plate 337. At the same time, the drive motor 340 and the vacuum pump 345 are started. The drive motor 340 drives the roller brush 339 to rotate, which is used to brush off the moisture-absorbing filler particles remaining on the surface of the rotary cutter 31 and between the rotary cutter 31 and the actuator plate 337. The vacuum pump 345 extracts air from the collection hopper 338 through the air box 341 and the connecting pipe 342, thus creating a negative pressure on the side of the collection hopper 338 near the rotary cutter 31. The scraped and brushed moisture-absorbing filler particles are absorbed into the collection hopper 338 and then adsorbed into the filter element 343 through the connecting pipe 342. Figure 9 As shown in the figure, it effectively prevents the moisture-absorbing filler from falling downwards onto the surface of the composite membrane and affecting the subsequent use effect, and avoids the moisture-absorbing filler particles from continuously adhering to the blade of the rotary cutter 31, affecting its sharpness and cutting accuracy; after the filter element 343 reaches the end of its service life, it can be pulled out of the air box 341 for replacement.

[0048] Reference Figure 1 As shown, to prevent the slit strips of composite film from rubbing against each other and causing the moisture-absorbing filler particles to fall off the cut edges, in this embodiment, the discharge mechanism 4 includes a connecting frame 41 installed on the upper end of the support frame 1. The lower end of the connecting frame 41 is rotatably equipped with a telescopic pressure roller 43 via a support column 42. The telescopic pressure roller 43 is used to press the slit strips of composite film downwards. The heights of the multiple telescopic pressure rollers 43 are different. Under the combined action of the tensioning force of the winding device and the telescopic pressure roller 43, the telescopic pressure roller 43 can press the strips of composite film downwards to different heights, thereby causing multiple strips of composite film to be discharged in an alternating manner. This effectively prevents the slit edges of the strips of composite film from rubbing against each other and causing the moisture-absorbing filler particles to fall off, thus affecting the moisture absorption effect of the composite film. Furthermore, the length of the telescopic pressure roller 43 is equal to the distance between adjacent rotary cutters 31. The telescopic pressure roller 43 can be adaptively extended and retracted according to the distance between the rotary cutters 31, ensuring that the telescopic pressure roller 43 completely covers its corresponding strip of composite film and avoids uneven pressure or missed pressure.

[0049] During operation: Step 1: Rotate the double-ended screw 323. The double-ended screw 323 drives multiple connecting blocks 322 and the rotary cutter 31 on its outer wall to adjust at equal intervals through the transmission thread on its outer wall.

[0050] Step 2: After passing the end of the film material through the slitting mechanism 3 and the discharge mechanism 4 in sequence, it is wound onto the external winding device. Then the winding device winds up the strip composite film and applies traction force. Then the control motor 37 is started. The control motor 37 drives the rotating roller 35 and multiple rotary cutters 31 to rotate synchronously so that the rotary cutters 31 can perform rotary slitting on the film material.

[0051] Step 3: A small number of moisture-absorbing filler particles at the membrane material cut are adsorbed onto the surface of the rotary cutter 31 under electrostatic action. During this period, the rotary cutter 31 rubs against the execution plate 337, which scrapes off the moisture-absorbing filler particles on the surface of the rotary cutter 31. At the same time, the drive motor 340 and the air pump 345 are started. The drive motor 340 drives the roller brush 339 to brush off the moisture-absorbing filler particles remaining on the surface of the rotary cutter 31 and between the rotary cutter 31 and the execution plate 337. The air pump 345 extracts air from the collection hopper 338 through the air box 341 and the connecting pipe 342, thereby creating a negative pressure on the side of the collection hopper 338 near the rotary cutter 31. The scraped and brushed moisture-absorbing filler particles are absorbed into the collection hopper 338 and then adsorbed into the filter element 343 through the connecting pipe 342.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-precision slitting device for easily degradable self-absorbing moisture composite films, characterized in that, Includes a support frame (1), an unwinding mechanism (2), a slitting mechanism (3), and a discharge mechanism (4) mounted on the support frame (1), wherein: The unwinding mechanism (2) and the discharge mechanism (4) are located on both sides of the slitting mechanism (3). The unwinding mechanism (2) is used to carry the unwinding roller (21) so that the film material on the unwinding roller (21) passes through the slitting mechanism (3) and the discharge mechanism (4) in sequence and is collected by the external winding device. The slitting mechanism (3) is used to slit the membrane material into multiple strip-shaped composite membranes of equal width at equal intervals; The discharge mechanism (4) is used to output multiple strip-shaped composite films after slitting to the winding device in an alternating manner, so as to avoid the rubbing of the cut edges of adjacent composite films causing the moisture-absorbing filler particles to spill out. The slitting mechanism (3) includes multiple rotary cutters (31) for slitting the membrane material, and an adjustment unit (32) for adjusting the spacing between the multiple rotary cutters (31). The slitting mechanism (3) also includes a cleaning unit (33) for real-time cleaning of the rotary cutters (31). Before the rotary cutter (31) slits the membrane material, the adjustment unit (32) adjusts the spacing between the multiple rotary cutters (31) according to the slitting requirements. The spacing between adjacent rotary cutters (31) is the width of the strip-shaped composite membrane after slitting. When the rotary cutter (31) slits the membrane material, the cleaning unit (33) cleans the blade of the rotary cutter (31) in real time to prevent the moisture-absorbing filler particles from being electrostatically adsorbed on the blade surface, affecting its sharpness and slitting accuracy.

2. The high-precision slitting device for easily degradable self-moisturizing composite films according to claim 1, characterized in that: The slitting mechanism (3) also includes a rotating roller (35) that moves through multiple rotary cutters (31), the rotating roller (35) being driven to rotate by a control motor (37); The adjustment unit (32) includes multiple sliding grooves opened on the outer wall of the rotating roller (35). The sliding grooves correspond to the position of the rotary cutter (31). The inner wall of the rotary cutter (31) is provided with a connecting block (322) that is slidably assembled in the sliding groove through a linkage ring (321). A double-headed screw (323) that rotates through the sliding groove is rotatably provided on the rotating roller (35). The double-headed screw (323) passes through the connecting block (322) by means of a threaded connection.

3. The high-precision slitting device for easily degradable self-moisturizing composite films according to claim 1, characterized in that: The cleaning unit (33) includes multiple operation boxes (331) located above the rotary cutter (31). Inside the operation box (331) is a scraper (335) for scraping off the blade of the rotary cutter (31) and the moisture-absorbing filler on the side wall. The scraper (335) is equipped with an auxiliary component (336) for further removing the moisture-absorbing filler particles.

4. A high-precision slitting device for easily degradable self-hygroscopic composite films according to claim 2, characterized in that: The rotary cutter (31) located in the middle of the rotating roller (35) is engaged with the outer wall of the rotating roller (35) through the linkage ring (321). The outer wall of the double-headed screw (323) is symmetrically provided with multiple sets of transmission threads located in the sliding groove. The pitch of the multiple transmission threads gradually increases towards the end of the rotating roller (35). When the double-headed screw (323) rotates, the rotary cutter (31) can be adjusted at equal intervals through multiple connecting blocks (322) via the transmission threads with different pitches.

5. A high-precision slitting device for easily degradable self-absorbing composite films according to claim 3, characterized in that: The scraper (335) is inclined at the lower end, and the inclination direction is opposite to the rotation direction of the rotary cutter (31), which is beneficial to scrape off the moisture-absorbing filler on the blade and side wall of the rotary cutter (31). A V-shaped relief groove is provided on the scraper (335) to make way for the rotary cutter (31). The inner wall of the V-shaped clearance groove is provided with an execution plate (337) that slides in contact with the blade and side wall of the rotary cutter (31). The upper end of the execution plate (337) is an inclined section, which is used to guide the scraped moisture-absorbing filler to the scraper (335) for collection.

6. A high-precision slitting device for easily degradable self-absorbing composite films according to claim 5, characterized in that: The auxiliary component (336) includes two collection hoppers (338) mounted on the upper end of the scraper (335) and symmetrically distributed along the rotary cutter (31). Multiple roller brushes (339) are rotatably mounted on the collection hoppers (338), and the roller brushes (339) contact the side wall of the rotary cutter (31) and the outer wall of the execution plate (337).

7. A high-precision slitting device for easily degradable self-absorbing composite films according to claim 6, characterized in that: The auxiliary component (336) also includes a bellows (341) installed on the upper end of the operation box (331). The bellows (341) is connected to two collection hoppers (338) through a connecting pipe (342). Two filter elements (343) are symmetrically arranged inside the bellows (341) in a detachable manner. A rectangular filter screen (344) is installed in the middle of the bellows (341). An air pump (345) is provided at the upper end of the bellows (341). The air pump (345) extends into the rectangular filter screen (344).

8. A high-precision slitting device for easily degradable self-absorbing composite films according to claim 1, characterized in that: The discharge mechanism (4) includes a connecting frame (41) installed on the upper end of the support frame (1). The lower end of the connecting frame (41) is rotatably equipped with a telescopic pressure roller (43) via a support column (42). The telescopic pressure roller (43) is used to press the slit strip composite film downwards to different heights for staggered discharge.

9. A high-precision slitting device for easily degradable self-hygroscopic composite films according to claim 2, characterized in that: Two connecting rings (332) are symmetrically arranged on the outer wall of the rotary cutter (31). An annular sleeve (333) that is slidably assembled with the connecting rings (332) is installed at the lower end of the operating box (331). The rotary cutter (31) can drive the operating box (331) to move along the axis of the rotating roller (35) through the connecting rings (332) and the annular sleeve (333).

10. A high-precision slitting device for easily degradable self-hygroscopic composite films according to claim 2, characterized in that: The support frame (1) is also rotatably mounted with tension rollers (11) located on both sides of the rotating roller (35). One tension roller (11) is located above the film material to press the film material down, and the other tension roller (11) is located below the film material to push the film material up. The film material between the two tension rollers (11) is kept taut so that the rotary cutter (31) can perform high-precision cutting of the film material.

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