An adjustable circular blade slitting device for a slitting machine

Abstract

This utility model discloses an adjustable circular blade slitting device for a slitting machine, aiming to provide a slitting device that not only allows for convenient adjustment of the upper circular blade to ensure close contact between the upper and lower circular blades for slitting film materials, but also provides smooth and precise adjustment of the upper circular blade movement, effectively avoiding collisions between the upper and lower circular blades. It includes: a frame with a guide rail; a lower blade assembly comprising a lower blade shaft rotatably mounted on the frame and several lower circular blades sequentially distributed along the lower blade shaft, the lower blade shaft being parallel to the guide rail; several upper blade assemblies corresponding to the lower circular blades, each upper blade assembly comprising: an upper blade slide block sliding along the guide rail; an upper circular blade rotatably mounted on the upper blade slide block; and a translation mechanism including a rack fixed to the frame and parallel to the guide rail, and a drive gear mounted on the upper blade slide block and meshing with the rack. The translation mechanism drives the upper blade slide block to slide, causing the upper circular blade to approach or contact the corresponding lower circular blade.

Description

Technical Field

[0001] This utility model relates to the field of slitting machine technology, specifically to an adjustable circular blade slitting device for a slitting machine. Background Technology

[0002] A slitting machine is a device that cuts wide-width film materials into multiple narrow-width film materials. Current slitting machines generally use a circular blade mechanism to cut the film. For example, Chinese Patent Publication No. CN116852437A, entitled "A Circular Blade Slitting Mechanism and a Diaphragm Slitting Machine," describes an invention that typically consists of a lower blade assembly and an upper blade assembly. The lower blade assembly includes a lower blade shaft and a lower circular blade, while the upper blade assembly includes an upper blade holder and an upper circular blade mounted on the upper blade holder. In actual use, the upper blade holder is manually moved axially along the lower blade shaft to bring the upper and lower circular blades into close contact for slitting. However, current upper blade assemblies are inconvenient to operate during movement, and the upper blade holder's movement stability is poor, easily leading to the upper circular blade wobbling and colliding with the lower circular blade, causing damage to the blades. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable circular blade slitting device for a slitting machine that not only allows for convenient adjustment of the upper circular blade to ensure close contact between the upper and lower circular blades for slitting film materials, but also ensures smooth movement and high adjustment accuracy of the upper circular blade, effectively preventing collisions between the upper and lower circular blades.

[0004] The technical solution of this utility model is: An adjustable circular blade slitting device for a slitting machine includes: The frame is equipped with guide rails; The lowering tool assembly includes a lowering tool shaft rotatably mounted on the frame and several lower circular tools arranged sequentially along the lowering tool shaft, with the lowering tool shaft parallel to the guide rail; Several upper tool components, each corresponding to a lower circular cutter, are included in the upper tool components: The upper tool slide slides along the guide rail; The upper circular cutter is rotatably mounted on the upper cutter slide. The translation mechanism includes a rack fixed on the frame and parallel to the guide rail, and a drive gear disposed on the upper cutter slide and meshing with the rack. The translation mechanism drives the upper cutter slide to slide so that the upper circular cutter approaches or fits against the corresponding lower circular cutter. In this design, the upper blade assembly corresponds one-to-one with the lower circular blade. During actual operation, the upper blade assembly drives the drive gear of the translation mechanism to rotate (either manually or electrically), causing the upper blade slide to move along the guide rail. This, in turn, moves the upper circular blade along the axial direction of the lower blade shaft, bringing the upper circular blade close to or against the corresponding lower circular blade to slit the film material. This design not only allows for convenient adjustment of the upper circular blade to ensure close contact between it and the lower circular blade for slitting the film material, but also, through the cooperation of the drive gear and rack, ensures smooth and precise movement of the upper blade along the guide rail. This effectively prevents the upper circular blade from wobbling and colliding with the lower circular blade due to poor stability of the upper blade slide movement.

[0005] Preferably, the translation mechanism also includes an adjusting handwheel, which is mounted on the axle of the drive gear. Thus, the drive gear can be manually rotated by adjusting the handwheel, causing the upper blade slide to move along the guide rail, thereby causing the upper circular blade to move axially along the lower blade shaft, bringing the upper circular blade close to or against the corresponding lower circular blade to slit the thin film material.

[0006] Preferably, the translation mechanism also includes an adjusting motor, which is mounted on the upper blade slide and drives the drive gear to rotate. Thus, the drive gear can be manually driven to rotate by adjusting the motor, causing the upper blade slide to move along the guide rail, thereby causing the upper circular blade to move axially along the lower blade shaft, bringing the upper circular blade close to or against the corresponding lower circular blade to slit the film material.

[0007] Preferably, the frame includes an upper blade crossbeam, the guide rail is disposed on the lower surface of the upper blade crossbeam, the rack is disposed on the side of the upper blade crossbeam, and the upper blade slide includes: The upper tool holder is located below the upper tool crossbeam and is slidably mounted on the guide rail. The upper circular tool is rotatably mounted on the upper tool holder. The slide side plate is connected to the upper blade holder by bolts or welding. The slide side plate is located on one side of the upper blade crossbeam, and the drive gear is rotatably mounted on the slide side plate. This design, on the one hand, arranges the upper blade holder below the upper blade crossbeam, with the upper blade holder slidably mounted on the guide rail. The upper circular blade is rotatably mounted on the upper blade holder. This arrangement facilitates the cooperation between the upper and lower circular blades to cut the film material and also facilitates the transfer of film material in the slitting machine, avoiding interference between the film material and the upper blade crossbeam. On the other hand, arranging the slide side plate on one side of the upper blade crossbeam, while simultaneously mounting the rack on the side of the upper blade crossbeam and rotatably mounting the drive gear on the slide side plate, not only provides sufficient space for the guide rail, gear, and drive gear, but also facilitates manual rotation of the drive gear.

[0008] Preferably, the upper blade assembly also includes a set screw on the upper blade slide, which locks the upper blade slide onto the machine frame. Thus, after the upper circular blade approaches or abuts against the corresponding lower circular blade, the upper blade slide can be locked onto the machine frame by tightening the set screw, ensuring that the position of the upper circular blade is fixed.

[0009] Preferably, the end of the set bolt facing the machine frame is also provided with a rubber pressure block. In this way, during the tightening of the set bolt, the rubber pressure block can contact the machine frame, thereby improving the fixing reliability of the upper tool slide and preventing scratches on the machine frame.

[0010] Preferably, the lower cutter shaft is horizontally distributed, and the lower circular cutter is detachably mounted on it. The frame has two coaxially distributed cutter shaft mounting cylinders with horizontally distributed axes. These cylinders are located at both ends of the lower cutter shaft, with each end of the shaft mounted on a corresponding cylinder via bearings. Each cylinder includes a main mounting cylinder fixed to the frame and two semi-circular clamping plates. One clamping plate is fixed to one end of the main mounting cylinder, while the other is a removable clamping plate bolted to the fixed plate. The bearings at both ends of the lower cutter shaft are located within the corresponding clamping plates. Thus, when the lower circular cutter needs to be replaced, the removable clamping plates of the two cutter shaft mounting cylinders can be removed, allowing the lower cutter shaft to be easily moved out for replacement of the lower circular cutter. Similarly, when installing the lower cutter shaft, remove the detachable clamps from the two cutter shaft mounting cylinders, install both ends of the lower cutter shaft into the fixed clamps via bearings, and then connect the detachable clamps to the fixed clamps with bolts. The operation is convenient.

[0011] Preferably, support members are provided below both ends of the lower cutter shaft. The support members are fixed to the frame and extend radially along the lower cutter shaft, with their upper surfaces close to the lower cutter shaft. Thus, when the lower circular cutter needs to be replaced, the removable clamps of the two cutter shaft mounting cylinders can be removed, allowing the lower cutter shaft to be moved out. After removal, the lower cutter shaft is supported by the support members located below both ends. The lower cutter shaft is then moved along the support members outside the cutter shaft mounting cylinder for easy replacement of the lower circular cutter.

[0012] Preferably, a drive shaft is also included, one end of which is connected to the lower cutter shaft via a coupling located inside one of the cutter shaft mounting sleeves. The drive shaft drives the lower cutter shaft to rotate.

[0013] Preferably, a stop is provided at one end of the lower cutter shaft, and a locking nut is provided at the other end. The lower circular cutters are sleeved on the lower cutter shaft, with each lower circular cutter located between the stop and the locking nut. A spacer is provided between any two adjacent lower circular cutters, and a spacer is also provided between the stop and an adjacent lower circular cutter. A spacer is also provided between the locking nut and an adjacent lower circular cutter. The spacers are sleeved on the lower cutter shaft, and the locking nut locks each lower circular cutter to the stop through the spacers. In this way, the spacing between the lower circular cutters can be controlled and adjusted by the axial length of the spacers to adapt to the slitting needs of film materials of different widths; at the same time, it facilitates the installation and replacement of the lower circular cutters.

[0014] Preferably, the upper blade assembly also includes a dust suction pipe, which is disposed on the upper blade slide and includes a dust suction port located near the cutting edge of the upper circular blade. Thus, during the process of the upper and lower circular blades working together to cut the film material, dust can be suctioned through the dust suction pipe, improving the cutting quality of the film material.

[0015] The beneficial effects of this utility model are: Firstly, in actual operation, the upper blade assembly drives the drive gear of the translation mechanism to rotate (either manually or electrically), which in turn moves the upper blade slide along the guide rail. This causes the upper circular blade to move axially along the lower blade shaft, bringing it closer to or against the corresponding lower circular blade for slitting the film material. This not only allows for convenient adjustment of the upper circular blade to ensure it is in close contact with the lower blade for slitting, but also, through the interaction of the drive gear and rack, ensures smooth and precise movement of the upper blade along the guide rail. This effectively prevents the upper blade from wobbling and colliding with the lower blade due to poor stability of the upper blade slide.

[0016] Secondly, when it is necessary to replace the lower circular cutter, the removable clamping plates of the two cutter shaft mounting cylinders can be removed, and then the lower cutter shaft can be moved out for easy replacement of the lower circular cutter on the lower cutter shaft. Similarly, when installing the lower cutter shaft, the removable clamping plates of the two cutter shaft mounting cylinders are removed, and both ends of the lower cutter shaft are respectively installed in the fixed clamping plate through bearings. Then, the removable clamping plates are connected to the fixed clamping plate with bolts. The operation is convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the adjustable circular blade slitting device of a slitting machine according to the present invention.

[0018] Figure 2 This is a schematic diagram of the upper blade assembly of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the cutting component of this utility model.

[0020] Figure 4 yes Figure 3 A schematic diagram of a cross-sectional structure at point AA.

[0021] In the picture: Frame 1, upper blade crossbeam 1.0, guide rail 1.1; Lowering tool assembly 2, lowering tool shaft 2.1, lower circular tool 2.2, stop block 2.3, locking nut 2.4, spacer 2.5; Upper blade assembly 3, upper blade slide 3.1, upper blade holder 3.11, slide side plate 3.12, upper circular blade 3.2, translation mechanism 3.3, rack 3.31, drive gear 3.32, adjusting handwheel 3.33, set bolt 3.4, dust extraction pipe 3.5; Drive shaft 4; Coupling 5; Cutter shaft mounting cylinder 6, main mounting cylinder 6.1, hoop plate 6.2, fixed hoop plate 6.21, and removable hoop plate 6.22; Support component 7, limiting protrusion 7.1. Detailed Implementation

[0022] Specific Implementation Example 1, such as Figure 1 , Figure 2 , Figure 3 As shown, an adjustable circular blade slitting device for a slitting machine includes a frame 1, a lower blade assembly 2, and several upper blade assemblies 3. The frame 1 is provided with guide rails 1.1.

[0023] The lowering blade assembly 2 includes a lowering blade shaft 2.1 rotatably mounted on the frame 1 and a plurality of lower circular blades 2.2 sequentially distributed along the lowering blade shaft 2.1. The lowering blade shaft 2.1 is parallel to the guide rail 1.1.

[0024] The upper blade assembly 3 corresponds one-to-one with the lower circular blade 2.2. The upper blade assembly 3 includes an upper blade slide 3.1, an upper circular blade 3.2, and a translation mechanism 3.3. The upper blade slide 3.1 slides along the guide rail 1.1. The upper circular blade 3.2 is rotatably mounted on the upper blade slide 3.1, and its rotation axis is parallel to the lower blade axis 2.1. The translation mechanism 3.3 includes a rack 3.31 and a drive gear 3.32. The rack 3.31 is fixed to the frame 1 and is parallel to the guide rail 1.1. The drive gear 3.32 is rotatably mounted on the upper blade slide 3.1 and meshes with the rack 3.31. The translation mechanism 3.3 drives the upper blade slide 3.1 to slide, so that the upper circular blade 3.2 approaches or adheres to the corresponding lower circular blade 2.2.

[0025] In this embodiment, the upper blade assembly 3 corresponds one-to-one with the lower circular blade 2.2. During actual operation, the upper blade assembly 3 rotates the drive gear 3.32 of the driving translation mechanism 3.3 (either manually or electrically), causing the upper blade slide 3.1 to move along the guide rail 1.1. This, in turn, causes the upper circular blade 3.2 to move axially along the lower blade shaft 2.1, bringing the upper circular blade 3.2 closer to or against the corresponding lower circular blade 2.2 to slit the film material. This not only enables… The upper circular blade 3.2 can be easily adjusted to ensure it is in close contact with the lower circular blade 2.2 for cutting film materials. Furthermore, the drive gear 3.32, in conjunction with the rack 3.31, moves the upper blade slide 3.1 along the guide rail 1.1, ensuring smooth and precise movement of the upper circular blade 3.2. This allows the upper circular blade 3.2 to approach or adhere to the corresponding lower circular blade 2.2, effectively preventing the upper circular blade 3.2 from swaying and colliding with the lower circular blade 2.2 due to poor stability of the upper blade slide 3.1.

[0026] Specific embodiment two, such as Figure 1 , Figure 2 , Figure 3 As shown, an adjustable circular blade slitting device for a slitting machine includes a frame 1, a lower blade assembly 2, and several upper blade assemblies 3. The frame 1 is provided with guide rails 1.1.

[0027] The lowering blade assembly 2 includes a lowering blade shaft 2.1 rotatably mounted on the frame 1 and a plurality of lower circular blades 2.2 sequentially distributed along the lowering blade shaft 2.1. The lowering blade shaft 2.1 is parallel to the guide rail 1.1. In this embodiment, the lowering blade shaft 2.1 is horizontally distributed.

[0028] The upper blade assembly 3 corresponds one-to-one with the lower circular blade 2.2. The upper blade assembly 3 includes an upper blade slide 3.1, an upper circular blade 3.2, and a translation mechanism 3.3. The upper blade slide 3.1 slides along the guide rail 1.1. The upper circular blade 3.2 is rotatably mounted on the upper blade slide 3.1, and its rotation axis is parallel to the lower blade axis 2.1. The translation mechanism 3.3 includes a rack 3.31 and a drive gear 3.32. The rack 3.31 is fixed to the frame 1 and is parallel to the guide rail 1.1. The drive gear 3.32 is rotatably mounted on the upper blade slide 3.1 and meshes with the rack 3.31. The translation mechanism 3.3 drives the upper blade slide 3.1 to slide, so that the upper circular blade 3.2 approaches or adheres to the corresponding lower circular blade 2.2.

[0029] In one implementation, such as Figure 2 As shown, the translation mechanism 3.3 also includes an adjusting handwheel 3.33, which is mounted on the axle of the drive gear 3.32. The adjusting handwheel 3.33 is used to drive the drive gear 3.32 to rotate. Thus, the drive gear 3.32 can be manually driven to rotate by adjusting the handwheel 3.33, causing the upper blade slide 3.1 to move along the guide rail 1.1, thereby causing the upper circular blade 3.2 to move axially along the lower blade shaft 2.1, so that the upper circular blade 3.2 approaches or adheres to the corresponding lower circular blade 2.2 to cut the thin film material.

[0030] In another embodiment, the translation mechanism 3.3 further includes an adjusting motor (not shown in the figure). The adjusting motor is mounted on the upper blade slide 3.1 and drives the drive gear 3.32 to rotate. Thus, the driving gear 3.32 can be manually rotated by adjusting the motor, causing the upper blade slide 3.1 to move along the guide rail 1.1, thereby causing the upper circular blade 3.2 to move axially along the lower blade shaft 2.1, so that the upper circular blade 3.2 approaches or adheres to the corresponding lower circular blade 2.2 to cut the film material.

[0031] In this embodiment, the upper blade assembly 3 corresponds one-to-one with the lower circular blade 2.2. During actual operation, the upper blade assembly 3 rotates the drive gear 3.32 of the driving translation mechanism 3.3 (either manually or electrically), causing the upper blade slide 3.1 to move along the guide rail 1.1. This, in turn, causes the upper circular blade 3.2 to move axially along the lower blade shaft 2.1, bringing the upper circular blade 3.2 closer to or against the corresponding lower circular blade 2.2 to slit the film material. This not only enables… The upper circular blade 3.2 can be easily adjusted to ensure it is in close contact with the lower circular blade 2.2 for cutting film materials. Furthermore, the drive gear 3.32, in conjunction with the rack 3.31, moves the upper blade slide 3.1 along the guide rail 1.1, ensuring smooth and precise movement of the upper circular blade 3.2. This allows the upper circular blade 3.2 to approach or adhere to the corresponding lower circular blade 2.2, effectively preventing the upper circular blade 3.2 from swaying and colliding with the lower circular blade 2.2 due to poor stability of the upper blade slide 3.1.

[0032] Specifically, such as Figure 3 As shown, an adjustable circular blade slitting device for a slitting machine further includes a drive shaft 4 and a drive motor. One end of the drive shaft 4 is connected to the lower blade shaft 2.1 via a coupling 5. The drive motor drives the drive shaft 4 to rotate, thereby causing the lower blade shaft 2.1 and the lower circular blade 2.2 to rotate, thereby slitting the film material.

[0033] Furthermore, such as Figure 1 , Figure 2As shown, the frame 1 includes an upper blade crossbeam 1.0, which in this embodiment is parallel to the lower blade shaft 2.1. A guide rail 1.1 is disposed on the lower surface of the upper blade crossbeam 1.0. A rack 3.31 is disposed on the side of the upper blade crossbeam 1.0. The upper blade slide 3.1 includes an upper blade holder 3.11 and a slide side plate 3.12. The upper blade holder 3.11 is located below the upper blade crossbeam 1.0 and is slidably mounted on the guide rail 1.1. An upper circular blade 3.2 is rotatably mounted on the upper blade holder 3.11 and is located below the upper blade crossbeam 1.0. The slide side plate 3.12 is connected to the upper blade holder 3.11 by bolts or welding. In this embodiment, the slide side plate 3.12 is connected to the upper blade holder 3.11 by bolts, and the slide side plate 3.12 is parallel to the guide rail 1.1. The slide side plate 3.12 is located on one side of the upper cutter beam 1.0. The drive gear 3.32 is rotatably mounted on the slide side plate 3.12. In this embodiment, when the drive gear 3.32 is driven by the adjusting handwheel 3.33, the upper cutter beam 1.0, the drive gear 3.32, and the slide side plate 3.12 are all located on the same side of the adjusting handwheel 3.33. In this embodiment, on the one hand, the upper blade holder 3.11 is arranged below the upper blade crossbeam 1.0, and the upper blade holder 3.11 is slidably mounted on the guide rail 1.1. The upper circular blade 3.2 is rotatably mounted on the upper blade holder 3.11. This arrangement facilitates the cooperation between the upper circular blade 3.2 and the lower circular blade 2.2 to cut the film material, and also facilitates the transfer of film material in the slitting machine, avoiding interference between the film material and the upper blade crossbeam 1.0. On the other hand, the slide side plate 3.12 is arranged on one side of the upper blade crossbeam 1.0, and the rack 3.31 is arranged on the side of the upper blade crossbeam 1.0. The drive gear 3.32 is rotatably mounted on the slide side plate 3.12. This not only provides sufficient space for the guide rail 1.1, the gear, and the drive gear 3.32, but also facilitates the manual rotation of the drive gear 3.32.

[0034] Furthermore, such as Figure 1 , Figure 2 As shown, the upper blade assembly 3 also includes a set screw 3.4 disposed on the upper blade slide 3.1. The set screw 3.4 locks the upper blade slide 3.1 onto the frame 1. Thus, after the upper circular blade 3.2 approaches or abuts against the corresponding lower circular blade 2.2, the upper blade slide 3.1 can be locked onto the frame 1 by tightening the set screw 3.4, ensuring that the position of the upper circular blade 3.2 is fixed.

[0035] In this embodiment, the set bolt 3.4 is threaded onto the slide side plate 3.12. The set bolt 3.4 is perpendicular to the slide side plate 3.12 and is located between the drive gear 3.32 and the upper tool holder 3.11.

[0036] A rubber pressure block is also provided at the end of the set bolt 3.4 facing the frame 1. In this way, during the tightening of the set bolt 3.4, the rubber pressure block can contact the frame 1, thereby improving the fixing reliability of the upper tool slide 3.1 and avoiding scratching the frame 1.

[0037] Furthermore, such as Figure 1 , Figure 2 As shown, the upper blade assembly 3 also includes a dust suction pipe 3.5, which is mounted on the upper blade slide 3.1. The dust suction pipe 3.5 includes a dust suction port located near the blade edge of the upper circular blade 3.2. The dust suction pipe 3.5 is connected to a negative pressure pipe, which in turn is connected to a negative pressure pump. Thus, during the process of the upper circular blade 3.2 and the lower circular blade 2.2 working together to cut the film material, dust can be suctioned through the dust suction pipe 3.5, improving the cutting quality of the film material.

[0038] Furthermore, such as Figure 3 , Figure 4 As shown, the lower circular cutter 2.2 is detachably mounted on the lower cutter shaft 2.1. Two coaxially distributed cutter shaft mounting cylinders 6 are provided on the frame 1. The axes of the cutter shaft mounting cylinders 6 are horizontally distributed. The two cutter shaft mounting cylinders 6 are located at both ends of the lower cutter shaft 2.1. The two ends of the lower cutter shaft 2.1 are respectively mounted in the corresponding cutter shaft mounting cylinders 6 via bearings. Specifically, the cutter shaft mounting cylinder 6 includes a main mounting cylinder 6.1 fixed to the frame 1 and two semi-circular clamping plates 6.2 on the left and right. One clamping plate 6.2 is a fixed clamping plate 6.21, which is fixed to one end of the main mounting cylinder 6.1. In this embodiment, the fixed clamping plate 6.21 is coaxially distributed with the cutter shaft mounting cylinder 6; the other clamping plate 6.2 is a detachable clamping plate 6.22, which is bolted to the fixed clamping plate 6.21. After the removable clamping plate 6.22 is bolted to the fixed clamping plate 6.21, a cylindrical body is formed, which is coaxial with the main mounting cylinder 6.1. The bearings at both ends of the lower cutter shaft 2.1 are located within the corresponding clamping plates 6.2. In this embodiment, the removable clamping plates 6.22 of the two cutter shaft mounting cylinders 6 are located on the same side of the lower cutter shaft 2.1. Thus, when it is necessary to replace the lower circular cutter 2.2, the removable clamping plates 6.22 of the two cutter shaft mounting cylinders 6 can be removed, and then the lower cutter shaft 2.1 can be moved out for easy replacement of the lower circular cutter 2.2 on the lower cutter shaft 2.1. Similarly, when installing the lower cutter shaft 2.1, the removable clamping plates 6.22 of the two cutter shaft mounting cylinders 6 are removed, and both ends of the lower cutter shaft 2.1 are respectively mounted on the fixed clamping plate 6.21 through bearings. Then, the removable clamping plates 6.22 are bolted to the fixed clamping plate 6.21, which is convenient to operate.

[0039] Furthermore, such as Figure 3 , Figure 4As shown, support members 7 are provided below both ends of the lower cutter shaft 2.1. The support members 7 are fixed to the frame 1. In this embodiment, the support members 7 are fixed to the frame 1 by connecting rods. The support members 7 extend radially along the lower cutter shaft 2.1, and the upper surface of the support members 7 is close to the lower cutter shaft 2.1. In this embodiment, the upper surface of the support members 7 is horizontally distributed, and the gap between the upper surface of the support members 7 and the lower cutter shaft 2.1 is less than 2 mm. Thus, when it is necessary to replace the lower circular cutter 2.2, the detachable clamping plates 6.22 of the two cutter shaft mounting cylinders 6 can be removed, and then the lower cutter shaft 2.1 can be moved out. After the lower cutter shaft 2.1 is moved out, it is supported by the support members 7 located below both ends of the lower cutter shaft 2.1. Then, the lower cutter shaft 2.1 is moved along the support members 7 to the outside of the cutter shaft mounting cylinder 6 for replacement of the lower circular cutter 2.2, which facilitates the replacement of the lower circular cutter 2.2 on the lower cutter shaft 2.1. Similarly, when installing the lower cutter shaft 2.1, remove the detachable clamping plates 6.22 of the two cutter shaft mounting cylinders 6, roll the lower cutter shaft 2.1 along the support member 7 so that both ends of the lower cutter shaft 2.1 are respectively mounted on the fixed clamping plate 6.21 through bearings, and then connect the detachable clamping plates 6.22 to the fixed clamping plate 6.21 with bolts. The operation is convenient.

[0040] In this embodiment, one end of the support member 7 is provided with a limiting protrusion 7.1, and the limiting protrusions on the two support members 7 are located on the same side of the lower cutting shaft 2.1. Thus, after the lower cutting shaft 2.1 is moved out of the cutting shaft mounting cylinder 6 and supported on the support members 7 below both ends of the lower cutting shaft 2.1, the limiting protrusions can limit the lower cutting shaft 2.1, so that the lower cutting shaft 2.1 can only move along the other end of the support member 7.

[0041] Furthermore, such as Figure 3 As shown, coupling 5 is located inside one of the tool shaft mounting cylinders 6. Drive shaft 4 drives the lower tool shaft 2.1 to rotate. In this way, the installation and replacement of the lower tool shaft 2.1 are not affected.

[0042] Furthermore, such as Figure 3As shown, a stop block 2.3 is provided at one end of the lower cutting shaft 2.1, and a locking nut 2.4 is provided at the other end. Lower circular cutters 2.2 are sleeved on the lower cutting shaft 2.1. In this embodiment, the lower circular cutter 2.2 is disc-shaped, with a shaft hole in the middle through which the lower cutting shaft 2.1 passes. Each lower circular cutter 2.2 is located between the stop block 2.3 and the locking nut 2.4. A spacer 2.5 is provided between any two adjacent lower circular cutters 2.2. A spacer 2.5 is also provided between the stop block 2.3 and an adjacent lower circular cutter 2.2. A spacer 2.5 is also provided between the locking nut 2.4 and an adjacent lower circular cutter 2.2. The spacer 2.5 is sleeved on the lower cutting shaft 2.1. The locking nut 2.4 locks each lower circular cutter 2.2 onto the stop block 2.3 through the spacer 2.5. In this way, the spacing between each lower circular blade 2.2 can be controlled and adjusted by the axial length of the spacer 2.5 to adapt to the slitting needs of film materials of different widths; at the same time, it facilitates the installation and replacement of the lower circular blade 2.2.

[0043] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An adjustable circular blade slitting device for a slitting machine, characterized in that, include: The frame is equipped with guide rails; The lowering tool assembly includes a lowering tool shaft rotatably mounted on the frame and several lower circular tools arranged sequentially along the lowering tool shaft, with the lowering tool shaft parallel to the guide rail; Several upper tool components, each corresponding to a lower circular cutter, are included in the upper tool components: The upper tool slide slides along the guide rail; The upper circular cutter is rotatably mounted on the upper cutter slide. The translation mechanism includes a rack fixed on the frame and parallel to the guide rail, and a drive gear disposed on the upper cutter slide and meshing with the rack. The translation mechanism drives the upper cutter slide to slide so that the upper circular cutter approaches or fits against the corresponding lower circular cutter.

2. The adjustable circular blade slitting device for a slitting machine according to claim 1, characterized in that, The translation mechanism also includes an adjusting handwheel, which is located on the axle of the drive gear.

3. The adjustable circular blade slitting device for a slitting machine according to claim 1, characterized in that, The translation mechanism also includes an adjustment motor, which is mounted on the upper blade slide and drives the drive gear to rotate.

4. An adjustable circular blade slitting device for a slitting machine according to claim 1, 2, or 3, characterized in that, The frame includes an upper blade crossbeam, the guide rail is disposed on the lower surface of the upper blade crossbeam, the rack is disposed on the side of the upper blade crossbeam, and the upper blade slide includes: The upper tool holder is located below the upper tool crossbeam and is slidably mounted on the guide rail. The upper circular tool is rotatably mounted on the upper tool holder. The slide side plate is connected to the upper tool holder by bolts or welding. The slide side plate is located on one side of the upper tool crossbeam, and the drive gear is rotatably mounted on the slide side plate.

5. An adjustable circular blade slitting device for a slitting machine according to claim 1, 2, or 3, characterized in that, The upper blade assembly also includes a set bolt on the upper blade slide, which locks the upper blade slide onto the frame. The end of the set bolt facing the frame is also provided with a rubber pressure block.

6. An adjustable circular blade slitting device for a slitting machine according to claim 1, 2, or 3, characterized in that, The lower cutter shaft is horizontally distributed, and the lower circular cutter is detachably mounted on the lower cutter shaft. The frame is provided with two coaxially distributed cutter shaft mounting cylinders. The axes of the cutter shaft mounting cylinders are horizontally distributed, and the two cutter shaft mounting cylinders are located at both ends of the lower cutter shaft. The two ends of the lower cutter shaft are respectively mounted in the corresponding cutter shaft mounting cylinders through bearings. The cutter shaft mounting cylinder includes a main mounting cylinder fixed on the frame and two semi-circular hoop plates on the left and right. One hoop plate is a fixed hoop plate, which is fixed to one end of the main mounting cylinder. The other hoop plate is a detachable hoop plate, which is connected to the fixed hoop plate by bolts. The bearings at both ends of the lower cutter shaft and at both ends of the lower cutter shaft are located in the corresponding two hoop plates.

7. The adjustable circular blade slitting device for a slitting machine according to claim 6, characterized in that, Support members are provided below both ends of the lower cutter shaft. The support members are fixed on the frame and extend radially along the lower cutter shaft. The upper surface of the support members is close to the lower cutter shaft.

8. The adjustable circular blade slitting device for a slitting machine according to claim 6, characterized in that, It also includes a drive shaft, one end of which is connected to the lower cutter shaft via a coupling, which is located inside one of the cutter shaft mounting cylinders.

9. An adjustable circular blade slitting device for a slitting machine according to claim 1, 2, or 3, characterized in that, One end of the lower cutting shaft is provided with a stop block, and the other end of the lower cutting shaft is provided with a locking nut. The lower circular cutter is sleeved on the lower cutting shaft, and each lower circular cutter is located between the stop block and the locking nut. A spacer is provided between any two adjacent lower circular cutters. A spacer is also provided between the stop block and a neighboring lower circular cutter. A spacer is also provided between the locking nut and a neighboring lower circular cutter. The spacers are sleeved on the lower cutting shaft, and the locking nut locks and fixes each lower circular cutter to the stop block through the spacers.

10. An adjustable circular blade slitting device for a slitting machine according to claim 1, 2, or 3, characterized in that, The upper blade assembly also includes a dust suction pipe, which is located on the upper blade slide and includes a dust suction port that is close to the blade edge of the upper circular blade.

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