Plastic film slitting mechanism

Abstract

This application relates to a plastic film slitting mechanism, specifically to plastic film processing equipment. It includes a base plate, with a cutting mechanism fixedly connected to its top. A connecting chamber is fixedly connected to the top right side of the base plate. A fixing mechanism is fixedly connected inside the cutting mechanism. This application features a sliding motion of a movable frame two driven by a rack on a fixed cabinet two. The movable frame two moves a lower pressure plate two to assist in positioning the plastic film. A fixing bar one drives a connecting shaft one to rotate, cooperating with the pressure shaft one to transport and flatten the plastic film. A push rod drives a connecting rod to rotate, which in turn drives a rotating shaft three and a support shaft to move, assisting in the stable transmission of the plastic film on the connecting frame. A shrinking column and shrinking rod drive a lower pressure plate four to move up and down, further compacting the plastic film in cooperation with lower pressure plates one and three. The cutter chamber, supported by a baffle plate one and a guide plate one, achieves stable cutting with the flattened plastic film.

Description

Technical Field

[0001] This application relates to the field of plastic film processing equipment technology, and in particular to plastic film slitting mechanisms. Background Technology

[0002] Plastic film slitting machines are mainly used to precisely and efficiently slit wide plastic films, such as polyethylene film, polypropylene film, and polyester film, formed during the production process into narrow-width or customized rolls or sheets according to the specific width and size requirements of downstream industries such as packaging, printing, electronics, medical, and agriculture. The machines utilize precise mechanical structures, transmission control systems, and specialized cutting tool assemblies. During operation, they must balance slitting accuracy, production efficiency, and film quality to prevent film stretching, breakage, or static electricity generation. Ultimately, they provide the necessary base materials for subsequent processes such as film printing, lamination, bag making, electronic component packaging, and medical dressing packaging, making them a key intermediate processing equipment connecting raw plastic film production with end-use applications.

[0003] A search revealed a plastic film slitting mechanism disclosed in patent document CN218776691U, comprising a frame and a cutter roller. The cutter roller is rotatably and adjustablely mounted on the frame. The cutter roller has multiple sets of cutters along its circumferential direction, each set containing several cutters. The cutters in the same set are arranged along the axial direction of the cutter roller, and different sets have different numbers of cutters. During rotational adjustment, the cutter roller allows different sets of cutters to sequentially engage in operation. This plastic film slitting mechanism is simple to operate and saves time and effort when slitting plastic film into different quantities.

[0004] Although the aforementioned patent achieves this by rotating the adjusting cutter roller to align a corresponding set of cutters downwards, putting that set of cutters in a working state, and then moving the plastic film under the cutter roller, with the working cutters positioned along the film's path, thus cutting the plastic film into the required quantity, and by simply rotating the adjusting cutter roller to align other sets of cutters downwards when other quantities need to be cut, this method is simpler, more time-saving, and more efficient than adding or removing cutters on the cutter roller and moving them axially along the roller. However, it suffers from a limitation where the cutting mechanism cannot precisely cut the plastic film. To effectively address issues affecting cutting, in the high-speed slitting process of plastic film, the thin and highly elastic film itself is easily affected by factors such as ambient temperature and humidity, the flatness of the conveyor rollers, and the coordination of the tension control system. This can easily lead to problems such as localized wrinkling, edge curling, or central depressions. These wrinkles not only cause uneven blade marks and excessive dimensional deviations during cutting, but also lead to jamming and breakage of the film during subsequent conveying, seriously affecting slitting efficiency and the quality of the finished film. This, in turn, adversely affects downstream processes such as printing, bag making, and packaging. Therefore, a plastic film slitting mechanism is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a plastic film slitting mechanism, which aims to improve the problem that the cutting mechanism cannot effectively adjust the plastic film, thus affecting the cutting process.

[0006] The plastic film slitting mechanism provided in this application adopts the following technical solution: The plastic film slitting mechanism includes a base plate, a cutting mechanism is fixedly connected to the top of the base plate, a connecting chamber is fixedly connected to the top right side of the base plate, a fixing mechanism is fixedly connected inside the cutting mechanism, and a connecting frame is fixedly connected to the top right side of the base plate; the cutting mechanism includes a fixed cabinet, two baffles are fixedly connected to the top of the fixed cabinet, guide plates are fixedly connected to the far sides of the two baffles, a blade chamber is fixedly connected to the near sides of the two guide plates, a pressure shaft is rotatably connected to the near sides of the two baffles, a rotating shaft is rotatably connected to the near sides of the two baffles, a leveling component is fixedly connected to the top of the base plate, a connecting component is fixedly connected to the top of the leveling component, and a feeding component is fixedly connected to the top of the connecting frame;

[0007] Through the above technical solution: in the plastic film slitting mechanism, the base plate serves as the basic load-bearing component, the cutting mechanism fixed at the top is responsible for the slitting operation, the connecting bin and connecting frame fixed on the right side respectively play the roles of material transition and transmission and supporting the feeding component, and the feeding component, leveling component and connecting component work together to complete the material feeding and leveling pre-processing, providing a guarantee for the precise slitting of the cutting mechanism.

[0008] Preferably, the fixing mechanism includes multiple fixing columns, the outer surfaces of which are fixedly connected to the inner wall of the top of the tool magazine, multiple limiting blocks are fixedly connected to the bottom of the outer surfaces of the multiple fixing columns, limiting strips are fixedly connected to the far sides of the multiple limiting blocks, connecting shafts are fixedly connected to the inner walls of the middle sections of the multiple limiting strips, a tool plate is fixedly connected to the inner wall of the tool magazine, multiple fixing discs are fixedly connected to the inner wall of the top of the tool plate, connecting columns are fixedly connected to the top of the multiple fixing discs, multiple damping columns are fixedly connected to the outer surfaces of the multiple connecting columns, springs are sleeved on the outer surfaces of the multiple damping columns, connecting shafts are fixedly connected to the inner walls of the bottom of the multiple limiting strips, push bars are rotatably connected to the outer surfaces of the multiple connecting shafts, moving discs are rotatably connected to the near sides of the multiple push bars, control rods are slidably connected to the inner walls of the multiple fixing columns, and pressing columns are fixedly connected to the top of the multiple control rods.

[0009] By adopting the above technical solution, the fixing mechanism is connected to the tool magazine through the fixing column. The tool plate is fixed by the cooperation of the limiting block, the limiting strip, the connecting shaft and the fixing plate. The damping column and spring outside the connecting column play a buffering and reset role. The push bar, the moving plate, the control rod and the pressing column work together to achieve convenient adjustment and stable locking of the tool plate.

[0010] Preferably, the leveling component includes a second fixed cabinet, the bottom of which is fixedly connected to the top of the base plate. Two fixing strips are fixedly connected to the top of the second fixed cabinet. A connecting shaft is rotatably connected to the adjacent sides of the two fixing strips. Fixing strips are fixedly connected to the distant sides of the two baffles. A pressure plate is fixedly connected to the adjacent sides of the two fixing strips. A movable frame is slidably connected to the top of the second fixed cabinet. Two racks are fixedly connected to the top of the second fixed cabinet. Two power blocks are fixedly connected to the top of the movable frame. A guide plate is fixedly connected to the top left side of the second fixed cabinet.

[0011] By adopting the above technical solution, in the leveling component, the fixed cabinet 2 is fixed on the base plate, and the fixed strip 1 at its top supports the connecting shaft 1. The fixed strip 2 drives the lower pressure plate 1 to initially level the material. The moving frame 1 slides along the rack under the drive of the power block, and cooperates with the guide plate 2 to guide the material, so as to realize the material transmission and initial leveling treatment.

[0012] Preferably, the connecting assembly includes a second movable frame, the bottom end of which is slidably connected to the top end of the second fixed cabinet, a second pressure plate fixedly connected to the bottom end of the second movable frame, two third pressure plates fixedly connected to the bottom ends of the first movable frames, two retractable columns fixedly connected to the top end of the second fixed cabinet, a first fixed plate fixedly connected to the top end of the two retractable columns, a plurality of retractable rods fixedly connected to the bottom end of the first fixed plate, a fourth pressure plate fixedly connected to the bottom end of the plurality of retractable rods, a first fixed frame fixedly connected to the top right side of the second fixed cabinet, and a second fixed plate fixedly connected to the top end of the first fixed frame.

[0013] By adopting the above technical solution, in the connecting components, the second movable frame drives the second lower pressure plate, and the first movable frame drives the third lower pressure plate to perform targeted flattening of the material. The shrinking column drives the fourth lower pressure plate to apply uniform pressure through the first fixed plate and the shrinking rod. The second fixed plate supported by the first fixed frame ensures stable material transmission, and together they complete the deep flattening of the material.

[0014] Preferably, the feeding assembly includes two baffles, the bottom ends of which are fixedly connected to the top of the connecting frame. Multiple rotating shafts are rotatably connected to adjacent sides of the two baffles. A pressure shaft is rotatably connected to the right end of adjacent sides of the two baffles. Push rods are fixedly connected to adjacent sides of both baffles. Connecting rods are rotatably connected to adjacent sides of both push rods. Rotating shafts are rotatably connected to the left end of adjacent sides of both connecting rods. A support shaft is rotatably connected to the right end of adjacent sides of the connecting frame. A fixing shaft is fixedly connected to the top right side of the connecting frame. A fixing frame is fixedly connected to the top of the connecting chamber. A flat curtain is fixedly connected to the top of the fixing frame. The right side of the connecting chamber is fixedly connected to the left side of the connecting frame. Both ends of the support shaft are rotatably connected to the front and rear inner walls of the connecting frame.

[0015] By adopting the above technical solution, in the feeding assembly, the baffle two forms a lateral limit at the top of the connecting frame, the inner rotating shaft two and rotating shaft three assist in material transmission, the pressure shaft two and the flat curtain ensure the flatness of the material, the push rod drives the connecting rod in linkage, and the connecting chamber is fixed to the connecting frame and the support shaft is stably installed, together to achieve stable feeding and pretreatment of plastic film.

[0016] Preferably, the bottom inner wall of the second movable frame is slidably connected to the outside of the two racks, and the right side of the second fixed cabinet is fixedly connected to the left side of the connecting compartment;

[0017] By adopting the above technical solution, the second mobile frame can achieve precise displacement along the racks by sliding cooperation between the bottom inner wall and the two racks, ensuring its coordination with the other parts of the leveling component; the right side of the second fixed cabinet is fixedly connected to the left side of the connecting compartment, so that the leveling component and the connecting compartment form a continuous material transfer channel, avoiding material displacement or loss during flow.

[0018] Preferably, the bottom ends of the plurality of fixed columns are fixedly connected to the inner wall of the top of the blade plate, the outer sides of the plurality of connecting shafts are rotatably connected to the outer inner walls of the plurality of fixed disks, and the top ends of the plurality of movable disks are fixedly connected to the bottom ends of the plurality of control rods.

[0019] By adopting the above technical solution, the bottom end of the fixed column is connected to the inner wall of the top of the blade plate to provide support for the blade plate. The second connecting shaft rotates on the inner wall of the outside of the fixed plate to ensure the stable movement of the limit bar. The top of the moving plate is connected to the bottom end of the control rod to realize control transmission, which together ensures the stable operation and precise control of the fixed mechanism.

[0020] Preferably, the inner walls of the plurality of connecting columns are slidably connected to the outside of the plurality of control rods, and the far sides of the plurality of damping columns are fixedly connected to the near sides of the plurality of limiting strips;

[0021] By adopting the above technical solution, the inner walls of multiple connecting columns slide in conjunction with the outer side of the control rod to limit the movement direction of the control rod, ensuring that it slides smoothly only along the axial direction to ensure accurate action; multiple damping columns are fixed on the opposite side to the side of the limit bar, which can absorb the impact force when the limit bar is under force, provide buffer for the movement of the limit bar, and ensure the stable operation of the fixing mechanism.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. In this utility model, the rack on the fixed cabinet 2 drives the sliding frame 2 to slide, and the sliding frame 2 drives the lower pressure plate 2 to move to assist in positioning the plastic film. The fixed strip 1 drives the connecting shaft 1 to rotate, and cooperates with the pressure shaft 1 to transport and flatten the plastic film. The push rod drives the connecting rod to rotate, and the connecting rod drives the rotating shaft 3 and the support shaft to move, which helps the plastic film to be stably transported on the connecting frame. The shrink column and shrink rod drive the lower pressure plate 4 to move up and down, and cooperate with the lower pressure plate 1 and the lower pressure plate 3 to further compact the plastic film. The cutter chamber, supported by the baffle 1 and the guide plate 1, completes the stable cutting effect with the flattened plastic film.

[0024] 2. In this utility model, the downward pressing column drives the control rod to slide along the inner wall of the fixed column. The control rod drives the moving disk to move down. The moving disk drives the push bar to rotate around the connecting shaft three. The rotation of the push bar drives the limiting strip to rotate around the connecting shaft two. The limiting strip drives the limiting block away from the fixed column, releasing the limitation on the fixed column. After the limiting block releases the fixed column, the blade plate and the blade chamber lose their fixed constraint, thus realizing the separation of the blade plate and the blade chamber. This achieves convenience and stability in the installation and disassembly of the blade, and improves the equipment maintenance efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the plastic film cutting mechanism proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the fixing cabinet 2 of the plastic film cutting mechanism proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0029] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0030] Figure 6 This is a schematic diagram of the lower pressure column of the plastic film slitting mechanism proposed in this utility model;

[0031] Figure 7 for Figure 6 Enlarged view of point D in the middle;

[0032] Figure 8 for Figure 6 Enlarged view at point E in the middle;

[0033] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Cutting mechanism; 21. Baffle 1; 22. Guide plate 1; 23. Tool magazine; 24. Pressure shaft 1; 25. Rotating shaft 1; 26. Leveling assembly; 261. Fixing strip 1; 262. Connecting shaft 1; 263. Fixing cabinet 2; 264. Fixing strip 2; 265. Lower pressure plate 1; 266. Moving frame 1; 267. Rack; 268. Power block; 269. Guide plate 2; 27. Connecting assembly; 271. Moving frame 2; 272. Lower pressure plate 2; 273. Lower pressure plate 3; 274. Retraction column; 275. Fixing plate 1; 276. Retraction rod; 277. Lower pressure plate 4; 278. Fixing frame 1; 279. 28. Fixed plate 2; 28. Feeding assembly; 281. Baffle 2; 282. Rotating shaft 2; 283. Pressing shaft 2; 284. Push rod; 285. Connecting rod; 286. Support shaft; 287. Rotating shaft 3; 288. Fixed shaft; 201. Fixed frame 2; 202. Flat curtain; 203. Fixed cabinet 1; 3. Connecting compartment; 4. Fixed mechanism; 41. Fixed column; 42. Limit block; 43. Limit strip; 44. Connecting shaft 2; 45. Fixed plate; 46. Connecting column; 47. Damping column; 48. Spring; 49. Knife plate; 401. Moving plate; 402. Push bar; 403. Connecting shaft 3; 404. Control rod; 405. Downward pressing column; 5. Connecting frame. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail below.

[0035] Example: Plastic film slitting mechanism, see reference Figures 1 to 3 The system includes a base plate 1, with a cutting mechanism 2 fixedly connected to its top. This secure connection prevents the cutting tool from shifting due to vibration during cutting, providing a stable mounting platform for the subsequent fixing mechanism 4. A connecting chamber 3 is fixedly connected to the top right side of the base plate 1, ensuring material cleanliness and continuous transmission, and providing a stable material input for the cutting mechanism 2. A fixing mechanism 4 is fixedly connected inside the cutting mechanism 2, enabling rapid separation of the blade plate 49 from the blade chamber 23. A connecting frame 5 is fixedly connected to the top right side of the base plate 1, supporting the weight of the feeding assembly 28 through its own frame structure, while providing a space channel for the feeding and transmission of the plastic film roll, ensuring a smooth transmission path between the feeding assembly 28 and the connecting chamber 3.

[0036] Specifically, the base plate 1 serves as the foundation of the equipment, providing a stable installation reference for each component by supporting the cutting mechanism 2, the connecting chamber 3, and the connecting frame 5, thus preventing vibration from affecting the operating accuracy. The connecting frame 5 supports the feeding assembly 28 and ensures a smooth plastic film transmission channel. The connecting chamber 3 receives the plastic film conveyed by the feeding assembly 28 and provides stable material supply to the cutting mechanism 2 under dustproof and guiding functions. The cutting mechanism 2 achieves precise cutting with the stable support of the base plate 1, while its internal fixing mechanism 4 can quickly separate the blade plate 49 from the blade chamber 23.

[0037] The cutting mechanism 2 includes a fixed cabinet 203, which provides rotational power to the pressure shaft 24 and the rotating shaft 25 via internal power. Two baffles 21 are fixedly connected to the top of the fixed cabinet 203. Through symmetrical installation and rigid support, these baffles prevent radial runout during the rotation of the pressure shaft 24 and the rotating shaft 25, ensuring the straightness of the plastic film during transport. Guide plates 22 are fixedly connected to the far sides of the two baffles 21. When the plastic film enters the cutting mechanism 2 from the connecting chamber 3, the guide plates 22 guide the plastic film, preventing the edges of the plastic film from directly contacting the sharp corners of the baffles 21 and causing scratches. A blade chamber 23 is fixedly connected to the near sides of the two guide plates 22, serving as a mounting and protective shell for the blades, fixing their position and limiting their cutting range.

[0038] Specifically, in the cutting mechanism 2, the fixed cabinet 203 drives the pressure shaft 24 and the rotating shaft 25 to rotate through internal power, providing power for the transmission of plastic film; the two baffles 21 at its top are symmetrically installed and rigidly supported to ensure the stable rotation of the pressure shaft 24 and the rotating shaft 25, and to prevent the plastic film from being deviated during transmission. The guide plate 22 on the outside of the baffle 21 guides the plastic film to enter smoothly and prevents the edges from being scratched. The blade chamber 23 between the guide plates 22 fixes the position of the blade and limits the cutting range. All components work together to achieve stable transmission of plastic film and precise cutting preparation.

[0039] Two baffles 21 are rotatably connected to a pressure shaft 24 on adjacent sides. Through compaction and synchronous transmission, the plastic film is ensured to remain flat before entering the blade chamber 23, eliminating cutting deviations caused by uneven film surfaces. Two baffles 21 are also rotatably connected to a rotating shaft 25 on adjacent sides, further improving the flatness of the plastic film upon entering the blade chamber 23, ensuring no protrusions on the film surface during cutting. A flattening component 26 is fixedly connected to the top of the base plate 1, laying the foundation for precise cutting by the subsequent cutting mechanism 2, while also preventing increased cutting waste due to film wrinkles and improving material utilization. A connecting component 27 is fixedly connected to the top of the flattening component 26, and a feeding component 28 is fixedly connected to the top of the connecting frame 5. Through stable unwinding and synchronous speed adjustment, the plastic film is prevented from becoming slack or overstretched during unwinding, ensuring that the feeding speed matches the cutting speed.

[0040] Specifically, the pressure shaft 24 on the side of the two baffles 21 ensures that the plastic film is flat before entering the cutting chamber 23 through compaction and synchronous transmission. The rotating shaft 25 further improves the flatness of the film surface to avoid the film surface bulging during cutting. The flattening component 26 on the base plate 1 lays the foundation for the precise cutting of the cutting mechanism 2 and reduces waste. The connecting component 27 at the top assists in flattening. The feeding component 28 on the connecting frame 5 prevents the plastic film from loosening or overstretching and ensures that the feeding and cutting speeds match through stable unwinding and synchronous speed adjustment. All components work together to provide a flat and stable raw material transmission for the precise cutting of the plastic film.

[0041] Reference Figures 6 to 8 The fixing mechanism 4 includes multiple fixing posts 41, which are externally fixed to the inner top wall of the blade magazine 23. This secure fixing prevents the fixing posts 41 from loosening or shifting during blade plate 49 operation, ensuring the relative positional accuracy between the blade plate 49 and the blade magazine 23. Multiple limiting blocks 42 are fixedly connected to the outer bottom of the multiple fixing posts 41. Through a wedge-shaped locking mechanism, the connection strength between the fixing posts 41 and the blade plate 49 is enhanced, preventing the blade plate 49 from moving up and down or shifting left and right during cutting. Limiting strips 43 are fixedly connected to the opposite sides of the multiple limiting blocks 42. Through a lever transmission design, the external force required to drive the limiting blocks 42 is reduced, allowing operators to complete the locking adjustment without the need for heavy tools.

[0042] Specifically, in the fixing mechanism 4, multiple fixing posts 41 are firmly connected to the inner wall of the top of the tool magazine 23, ensuring the relative positional accuracy of the blade plate 49 and the tool magazine 23 through stable fixing; the limiting block 42 at the bottom of the fixing post 41 enhances the connection strength between the fixing post 41 and the blade plate 49 in a wedge-shaped interlocking manner, preventing the blade plate 49 from shifting or deviating during cutting; the limiting strip 43 on the outside of the limiting block 42 reduces the driving force through lever transmission, allowing the operator to complete the locking adjustment without heavy tools. The three work together to achieve stable installation and convenient adjustment of the blade plate 49 in the tool magazine 23.

[0043] A connecting shaft 44 is fixedly connected to the inner wall of the middle section of each of the multiple limiting bars 43, serving as the rotation fulcrum of the limiting bars 43 and providing a stable rotation axis for the limiting bars 43. A blade plate 49 is fixedly connected to the inner wall of the blade chamber 23, and multiple fixed discs 45 are fixedly connected to the inner wall of the top of the blade plate 49, serving as the connecting and transfer components between the blade plate 49, the fixed post 41, and the limiting bars 43. The blade plate 49 is locked to the fixed post 41 by engaging with the limiting block 42 through a slot. A connecting post 46 is fixedly connected to the top of each of the multiple fixed discs 45, and multiple damping posts 47 are fixedly connected to the outside of each of the multiple connecting posts 46. When the limiting bars 43 rotate, the damping posts 47 are elastically deformed by the compression of the limiting bars 43. The reaction force generated by the deformation provides damping buffer for the movement of the limiting bars 43. At the same time, when the limiting bars 43 lose external driving force, the elastic restoring force pushes the limiting bars 43 back to the initial locked position.

[0044] Specifically, the connecting shaft 44 in the middle section of the limiting strip 43 serves as a fulcrum to provide a stable rotation axis. The blade 49 on the inner wall of the tool magazine 23 is connected to the fixing post 41 and the limiting strip 43 through the top fixing plate 45. The fixing plate 45 is locked by engaging with the limiting block 42 through a slot. The connecting post 46 at the top of the fixing plate 45 has an external damping post 47. When the limiting strip 43 rotates, it is compressed and deformed to generate damping buffer. When there is no external force, the elastic restoring force pushes the limiting strip 43 back to the initial locking position, which together ensures the stable connection and flexible adjustment of the blade 49 and the tool magazine 23.

[0045] Multiple damping pillars 47 are each fitted with a spring 48. When the limiting strip 43 presses against the damping pillar 47, the spring 48 is compressed simultaneously, further enhancing the buffering force and preventing excessive deformation of the damping pillar 47. When the external force is released, the restoring force of the spring 48 and the damping pillar 47 together push the limiting strip 43 to reset, improving the reset speed and stability. A connecting shaft 3 403 is fixedly connected to the inner wall of the bottom end of each of the multiple limiting strips 43, serving as the force transmission fulcrum for the pusher 402 to drive the limiting strip 43, converting the linear thrust of the pusher 402 into the rotational force of the limiting strip 43 around the connecting shaft 2 44. Pushers 402 are rotatably connected to the outside of each of the multiple connecting shafts 3 403. When the moving disk 401 moves up and down, the pushers 402 change their tilt angle through the rotatable connections at both ends, thereby pushing the limiting strip 43 to rotate around the connecting shaft 2 44.

[0046] Specifically, the springs 48 outside the multiple damping columns 47 are compressed synchronously when the limiting bar 43 presses the damping column 47 to enhance the buffering force and prevent the damping column 47 from being over-deformed. After the external force is released, the springs 48 work together with the damping column 47 to push the limiting bar 43 back to its original position, thus improving the reset effect. The connecting shaft 403 at the bottom of the limiting bar 43 serves as the force transmission fulcrum, converting the linear thrust of the push bar 402 into the rotational force of the limiting bar 43 around the connecting shaft 44. The push bar 402 moves up and down with the moving disk 401 to change its tilt angle, thereby pushing the limiting bar 43 to rotate and achieve limit adjustment.

[0047] Multiple push bars 402 are rotatably connected to a movable disk 401 on adjacent sides. When the control lever 404 moves the movable disk 401 up and down, the movable disk 401 simultaneously drives all push bars 402 to move synchronously through the connecting holes on its edge, ensuring that the tilt angle of the multiple push bars 402 changes consistently. Control levers 404 are slidably connected to the inner walls of multiple fixed posts 41. By pressing down or pulling up the pressing post 405, the operator can drive the control levers 404 to slide along the inner walls of the fixed posts 41 and connecting posts 46, thereby driving the movable disk 401 to move up and down. The tops of multiple control levers 404 are fixedly connected to pressing posts 405, facilitating pressing by hand or tools.

[0048] Specifically, the operator presses the pressure column 405 for easy application of force, causing the control rod 404 to slide along the inner wall of the fixed column 41 and the connecting column 46. The control rod 404 then drives the moving disk 401 to move up and down. The moving disk 401 synchronously drives all the push bars 402 to change their tilt angle through the edge connecting hole, so as to realize the coordinated action of each component.

[0049] Reference Figures 3 to 5 The leveling component 26 includes a fixed cabinet 263, the bottom of which is fixedly connected to the top of the base plate 1. Two fixing strips 261 are fixedly connected to the top of the fixed cabinet 263, providing forward conveying support for subsequent leveling operations. Fixing strips 264 are fixedly connected to the opposite sides of the two baffles 21, forming a stable connection structure between the fixing strips 264 and the baffles 21. When material passes through, the lower pressure plate 265 applies pressure to the material surface, thus performing preliminary leveling. A movable frame 266 is slidably connected to the top of the fixed cabinet 263. A rack 267 provides a transmission basis for the sliding of the movable frame 266, ensuring the accuracy and stability of its movement.

[0050] Specifically, in the leveling component 26, the fixed cabinet 263 is fixed to the top of the base plate 1, and the fixed strip 261 at the top provides conveying support for the leveling operation. The fixed strip 264 on the outside of the baffle 21 is firmly connected to the baffle 21, which drives the lower pressure plate 265 to initially level the material. The movable frame 266 at the top of the fixed cabinet 263 achieves precise and stable sliding with the help of the rack 267, laying the foundation for subsequent leveling adjustment.

[0051] Two power blocks 268 are fixedly connected to the top of the movable frame 266, providing power for its sliding. A guide plate 269 is fixedly connected to the top left side of the fixed cabinet 263, guiding and straightening the material. The connecting assembly 27 includes a movable frame 271, which can slide horizontally at the top of the fixed cabinet 263 to adjust its position to coordinate with the movements of other components. A lower pressure plate 273 is fixedly connected to the bottom of the two movable frames 266. When the movable frames 266 slide, the lower pressure plate 273 moves accordingly, allowing for targeted leveling of specific areas of the material. Two retractable columns 274 are fixedly connected to the top of the fixed cabinet 263. Each retractable column has an internal telescopic structure, allowing for length adjustment in the axial direction.

[0052] Specifically, the power block 268 at the top of the movable frame 266 provides power for its sliding, and the guide plate 269 on the left side of the fixed cabinet 263 guides and straightens the material; the movable frame 271 of the connecting component 27 can slide horizontally to adjust its position, the movable frame 266 drives the lower pressure plate 273 to flatten the material in a targeted manner, and the shrink column 274 on the fixed cabinet 263 adjusts its length through axial extension and retraction, working together to achieve precise flattening of the material.

[0053] Two shrinkage columns 274 are fixedly connected to their top ends by a fixing plate 275, which serves as the mounting carrier for the shrinkage rods 276, integrating multiple shrinkage rods 276 into a single unit. Multiple shrinkage rods 276 are fixedly connected to the bottom end of the fixing plate 275. These shrinkage rods 276 have elastic shrinkage capabilities, automatically adjusting their extension and retraction based on the material thickness. A lower pressure plate 277 is fixedly connected to the bottom end of the multiple shrinkage rods 276. Under the elastic force of the shrinkage rods 276, the lower pressure plate 277 remains in contact with the material surface, applying continuous and uniform pressure to the material. A fixing frame 278 is fixedly connected to the top right side of the fixing cabinet 263, providing stable mounting support for the fixing plate 279. The fixing plate 279 is fixedly connected to the top end of the fixing frame 278, ensuring that the material does not shift significantly during leveling and also providing structural support for the connection of the connecting component 27 with other adjacent components.

[0054] Specifically, the fixed plate 275 at the top of the shrink column 274 carries multiple shrink rods 276 with elastic shrinking capacity. The shrink rods 276 automatically adjust the amount of expansion and contraction according to the material thickness, causing the bottom pressure plate 277 to continuously contact the material surface and apply uniform pressure. The fixed frame 278 on the fixed cabinet 263 provides stable support for the fixed plate 279. The fixed plate 279 prevents the material from shifting significantly when leveling, and at the same time assists the connecting component 27 in connecting with adjacent components.

[0055] The feeding assembly 28 includes two baffles 281, which are symmetrically distributed on both sides of the top of the connecting frame 5. The bottom ends are fixedly connected to the top of the connecting frame 5, forming the two side boundaries of the material feeding channel, thus providing lateral restraint for the material. Multiple rotating shafts 282 are rotatably connected to the adjacent sides of the two baffles 281. These rotating shafts are parallel to each other and evenly distributed, and can rotate freely around their own axes. A pressure shaft 283 is rotatably connected to the right end of the adjacent sides of the two baffles 281, ensuring that the material enters the subsequent processing stage in a flat state. Push rods 284 are fixedly connected to the adjacent sides of both baffles 281. The push rods 284 can extend and retract under the action of the drive mechanism, providing power to the connecting rod 285.

[0056] Specifically, the two baffles 281 of the feeding component 28 are symmetrically fixed at the top of the connecting frame 5 to form a lateral limiting boundary. Multiple rotating shafts 282 on the adjacent side can rotate freely to assist in material transmission. The pressure shaft 283 at the right end ensures that the material enters the subsequent stage smoothly. The push rod 284 on the baffle 281 can extend and retract to provide power for the connecting rod 285, thus achieving stable feeding of materials.

[0057] Two connecting rods 285 are rotatably connected to the left end of their adjacent sides with a rotating shaft 287 to ensure that the material remains in motion during transmission and avoids stagnation. Two connecting rods 285 are rotatably connected to the right end of their adjacent sides with a support shaft 286, which provides a fulcrum for the swing of the connecting rods 285. A fixed shaft 288 is fixedly connected to the top right side of the connecting frame (5), which provides a fulcrum for the material roll. A fixed frame 201 is fixedly connected to the top of the connecting bin 3, which provides installation support for the flat curtain 202. The top of the fixed frame 201 is fixedly connected to the flat curtain 202, which flattens the material to a certain extent. The right side of the connecting bin 3 is fixedly connected to the left side of the connecting frame 5, so that the connecting bin 3 and the connecting frame 5 form an integral structure. The two ends of the support shaft 286 are rotatably connected to the inner walls of the front and rear sides of the connecting frame 5, which further enhances the installation stability of the support shaft 286.

[0058] Specifically, the rotating shaft 287 at the left end of the connecting rod 285 ensures that the material transmission is uninterrupted, and the supporting shaft 286 at the right end, which is rotatably connected to the inner walls of the connecting frame 5, provides swing support; the right side of the connecting bin 3 and the left side of the connecting frame 5 are fixed together to form an integral whole, and the flat curtain 202 supported by the top fixed frame 201 flattens the material, together ensuring stable material transmission and structural stability.

[0059] The bottom inner wall of the movable frame 271 is slidably connected to the outside of two racks 267. The racks 267 enable precise displacement control of the movable frame 271, ensuring its coordination with other components. The right side of the fixed cabinet 263 is fixedly connected to the left side of the connecting compartment 3, achieving seamless connection between processes and reducing material loss and deviation during material transfer. The bottom ends of multiple fixed columns 41 are fixedly connected to the top inner wall of the blade plate 49, providing stable support for the blade plate 49 and ensuring that the blade plate 49 maintains a stable position and posture during operation. The outside of multiple connecting shafts 44 is rotatably connected to the outer inner wall of multiple fixed plates 45. The fixed plates 45 provide rotational support and limits for the connecting shafts 44, making the rotation of the connecting shafts 44 smoother.

[0060] Specifically, the movable frame 271 slides along the rack 267 to achieve precise displacement to ensure coordination with other components; the right side of the fixed cabinet 263 is fixed to the left side of the connecting compartment 3 to achieve seamless connection of processes and reduce material transmission loss and deviation; the fixed column 41 provides stable support for the blade 49; and the connecting shaft 44 rotates smoothly under the support and limit of the fixed plate 45, together ensuring the precise and stable operation of each link of the equipment.

[0061] The tops of multiple movable discs 401 are fixedly connected to the bottoms of multiple control levers 404. The position and state of the movable discs 401 can be precisely controlled by extending, retracting, or swinging the control levers 404. The inner walls of multiple connecting posts 46 are slidably connected to the outside of the multiple control levers 404, ensuring that the control levers 404 can only slide along the axial direction of the connecting posts 46, thus guaranteeing the accuracy and stability of the control levers 404's movement. The distant sides of multiple damping posts 47 are fixedly connected to the adjacent sides of multiple limiting strips 43. When the limiting strips 43 are subjected to external force, the damping posts 47 can absorb part of the impact force.

[0062] Specifically, the movable disk 401 connected to the bottom of the control rod 404 can be precisely controlled by the extension or swing of the control rod 404. The control rod 404 slides along the inner wall of the connecting column 46 to ensure accurate and stable operation. The damping column 47 on the side of the limit bar 43 can absorb part of the impact force when the limit bar 43 is subjected to force, thus jointly ensuring the accuracy and stability of the mechanism's operation.

[0063] The implementation principle of this application embodiment is as follows: In the feeding assembly 28, the second baffle 281 drives the second rotating shaft 282 and the second pressure shaft 283 to rotate, which in turn drives the connecting rod 285 to move in conjunction with the push rod 284. The connecting rod 285 drives the third rotating shaft 287 and the support shaft 286 to rotate. At the same time, the second fixing frame 201 drives the flat curtain 202 to assist in guiding and smoothly convey the plastic film to the connecting chamber 3. After the connecting chamber 3 receives the plastic film, the shrink column 274 of the connecting assembly 27 drives the first fixing plate 275 for support. The first fixing plate 275 drives the retraction column 275 to move. The retracting rod 276 extends and retracts, causing the lower pressure plate 277 to move up and down. This, in conjunction with the fixing frame 278 and the fixing plate 279, further compacts the plastic film to eliminate wrinkles. The rack 267 on the fixing cabinet 263 causes the movable frame 266 to slide. The movable frame 266 then moves the power block 268 and the lower pressure plate 273 to the appropriate position. Simultaneously, the movable frame 271 slides along the rack 267 and causes the lower pressure plate 272 to move, working together with the lower pressure plate 265 to position the plastic film.

[0064] The fixing cabinet 263 of the leveling component 26 drives the fixing strip 261 to move. The fixing strip 261 drives the connecting shaft 262 to rotate. Together with the fixing strip 264 driven by the baffle 21 and the lower pressure plate 265, the plastic film is leveled. In the cutting mechanism 2, the baffle 21 drives the guide plate 22 to be fixed to the blade chamber 23. At the same time, the baffle 21 drives the pressure shaft 24 and the rotating shaft 25 to rotate, so as to stably transport the leveled plastic film to the bottom of the blade chamber 23. Finally, the blade chamber 23 completes the precise cutting of the plastic film under the support of the guide plate 22 and the baffle 21. The linkage of each structure in the whole process ensures that the plastic film is in a stable state throughout the cutting process, thereby realizing continuous and efficient operation of the equipment, reducing downtime and adjustment caused by unstable raw materials, and improving production efficiency.

[0065] When the fixing mechanism 4 is running, the pressing column 405 drives the control rod 404 to slide downward along the inner wall of the fixing column 41. The control rod 404 drives the moving disk 401 at the bottom to move downward synchronously. During the downward movement of the moving disk 401, the push bar 402 rotates around the connecting shaft 3 403. When the push bar 402 rotates, it generates a thrust on the limiting bar 43, causing the limiting bar 43 to rotate around the connecting shaft 2 44 and rotate to the outer inner wall of the fixing disk 45. The rotation of the limiting bar 43 drives the limiting block 42 on the opposite side to move, allowing the limiting block 42 to gradually move away from the fixing column 41, thereby releasing the constraint of the limiting block 42 on the fixing column 41.

[0066] At the same time, the damping column 47 and spring 48 outside the connecting column 46 deform as the limiting strip 43 rotates, providing buffering force. After the limiting block 42 completely releases the fixing column 41, the fixed connection between the blade plate 49 and the blade chamber 23 is lost, and the blade plate 49 and the blade chamber 23 can be separated, ultimately achieving the purpose of convenient installation or removal of the blade, thereby realizing the convenience of equipment maintenance operations, reducing the workload of operators, and reducing equipment downtime for maintenance.

[0067] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mechanism for slitting plastic film comprising a base plate (1), characterised in that: A cutting mechanism (2) is fixedly connected to the top of the base plate (1), a connecting compartment (3) is fixedly connected to the top right side of the base plate (1), a fixing mechanism (4) is fixedly connected inside the cutting mechanism (2), and a connecting frame (5) is fixedly connected to the top right side of the base plate (1). The cutting mechanism (2) includes a fixed cabinet (203), the top of which is fixedly connected to two baffles (21), the far sides of the two baffles (21) are fixedly connected to guide plates (22), the near sides of the two guide plates (22) are fixedly connected to a blade chamber (23), the near sides of the two baffles (21) are rotatably connected to a pressure shaft (24), the near sides of the two baffles (21) are rotatably connected to a rotating shaft (25), the top of the base plate (1) is fixedly connected to a leveling component (26), the top of the leveling component (26) is fixedly connected to a connecting component (27), and the top of the connecting frame (5) is fixedly connected to a feeding component (28).

2. The plastic film slitting mechanism according to claim 1, characterized in that: The fixing mechanism (4) includes multiple fixing columns (41). The external parts of the multiple fixing columns (41) are fixedly connected to the inner wall of the top of the tool magazine (23). Multiple limiting blocks (42) are fixedly connected to the bottom of the multiple fixing columns (41). Limiting strips (43) are fixedly connected to the opposite sides of the multiple limiting blocks (42). Connecting shafts (44) are fixedly connected to the inner walls of the middle sections of the multiple limiting strips (43). A blade plate (49) is fixedly connected to the inner wall of the tool magazine (23). Multiple fixing discs (45) are fixedly connected to the inner wall of the top of the blade plate (49). The top of the multiple fixing discs (45) are fixedly connected to... A connecting column (46) is connected to the outside of the multiple connecting columns (46), and a multiple damping column (47) is fixedly connected to the outside of the multiple damping column (47). A spring (48) is sleeved on the outside of the multiple damping column (47). A connecting shaft three (403) is fixedly connected to the inner wall of the bottom end of the multiple limiting strips (43). A push bar (402) is rotatably connected to the outside of the multiple connecting shaft three (403). A moving disk (401) is rotatably connected to the adjacent side of the multiple push bars (402). A control rod (404) is slidably connected to the inner wall of the multiple fixed columns (41). A pressing column (405) is fixedly connected to the top of the multiple control rods (404).

3. The plastic film slitting mechanism according to claim 1, characterized in that: The leveling component (26) includes a fixed cabinet two (263), the bottom end of which is fixedly connected to the top end of the base plate (1). The top end of the fixed cabinet two (263) is fixedly connected to two fixing strips one (261). The two fixing strips one (261) are rotatably connected to a connecting shaft one (262) on the adjacent side. The two baffles one (21) are fixedly connected to two fixing strips two (264) on the distant side. The two fixing strips two (264) are fixedly connected to a lower pressure plate one (265) on the adjacent side. The top end of the fixed cabinet two (263) is slidably connected to a moving frame one (266). The top end of the fixed cabinet two (263) is fixedly connected to two racks (267). The top end of the moving frame one (266) is fixedly connected to two power blocks (268). The top left side of the fixed cabinet two (263) is fixedly connected to a guide plate two (269).

4. The plastic film slitting mechanism according to claim 3, characterized in that: The connecting assembly (27) includes a second movable frame (271), the bottom end of which is slidably connected to the top end of the second fixed cabinet (263). The bottom end of the second movable frame (271) is fixedly connected to a second pressure plate (272). The bottom ends of the two first movable frames (266) are fixedly connected to a third pressure plate (273). The top end of the second fixed cabinet (263) is fixedly connected to two retractable columns (274). The top ends of the two retractable columns (274) are fixedly connected to a first fixed plate (275). The bottom end of the first fixed plate (275) is fixedly connected to multiple retractable rods (276). The bottom ends of the multiple retractable rods (276) are fixedly connected to a fourth pressure plate (277). The top right side of the second fixed cabinet (263) is fixedly connected to a first fixed frame (278). The top end of the first fixed frame (278) is fixedly connected to a second fixed plate (279).

5. The plastic film slitting mechanism according to claim 1, characterized in that: The feeding assembly (28) includes two baffles (281), the bottom ends of which are fixedly connected to the top of the connecting frame (5). Multiple rotating shafts (282) are rotatably connected to adjacent sides of the two baffles (281). A pressure shaft (283) is rotatably connected to the right end of adjacent sides of the two baffles (281). Push rods (284) are fixedly connected to adjacent sides of both baffles (281). Connecting rods (285) are rotatably connected to adjacent sides of both push rods (284). The left end of each of the two connecting rods (285) is rotatably connected to a pivot shaft (287) on the same side. The right end of each of the two connecting rods (285) is rotatably connected to a support shaft (286). The top right end of the connecting frame (5) is fixedly connected to a fixed shaft (288). The top end of the connecting compartment (3) is fixedly connected to a fixed frame (201). The top end of the fixed frame (201) is fixedly connected to a flat curtain (202). The right side of the connecting compartment (3) is fixedly connected to the left side of the connecting frame (5). The two ends of the support shaft (286) are rotatably connected to the inner walls of the front and rear sides of the connecting frame (5).

6. The plastic film slitting mechanism according to claim 4, characterized in that: The bottom inner wall of the movable frame two (271) is slidably connected to the outside of the two racks (267), and the right side of the fixed cabinet two (263) is fixedly connected to the left side of the connecting compartment (3).

7. The plastic film slitting mechanism according to claim 2, characterized in that: The bottom ends of the plurality of fixed columns (41) are fixedly connected to the inner wall of the top of the blade plate (49), the outer sides of the plurality of connecting shafts (44) are rotatably connected to the outer inner walls of the plurality of fixed disks (45), and the top ends of the plurality of movable disks (401) are fixedly connected to the bottom ends of the plurality of control rods (404).

8. The plastic film slitting mechanism according to claim 2, characterized in that: The inner walls of the plurality of connecting columns (46) are slidably connected to the outside of the plurality of control rods (404), and the far sides of the plurality of damping columns (47) are fixedly connected to the near sides of the plurality of limiting strips (43).

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