Adjustable slitting device of slitting machine

Abstract

The invention discloses an adjustable slitting device of a slitting machine, and aims to provide the adjustable slitting device which can utilize the same set of circular knife slitting mechanism to slit films with different thicknesses under the condition of ensuring the trimming quality, so that the production and manufacturing cost is reduced, and the production efficiency is improved. According to the adjustable slitting device of the slitting machine, the problem that the edge cutting quality is poor can be effectively solved. The adjustable guide roller assembly comprises a guide roller and a lifting mechanism for adjusting the height of the guide roller; the circular knife slitting mechanism comprises a lower knife roll with a fixed height position, a rotary driving mechanism for driving the lower knife roll to rotate and an upper circular knife assembly with the height position capable of being adjusted through a knife feeding mechanism, the upper circular knife assembly comprises an upper circular knife which is rotationally arranged, and the lower knife roll is parallel to the guide roll; a thin film of the splitting machine sequentially bypasses the lower knife roll and the guide roll, the section, between the lower knife roll and the guide roll, of the thin film inclines downwards towards one side of the guide roll, the inclination angle of the section of the thin film is defined as a wrap angle, and the size of the wrap angle is adjusted by adjusting the height of the guide roll.

Description

Technical Field

[0001] The invention relates to the technical field of film slitting, and in particular to an adjustable slitting device of a slitting machine. Background Art

[0002] At present, slitting machines generally use a circular knife mechanism to slit the film. The circular knife mechanism generally includes a lower knife roller with a fixed height position, a rotary drive mechanism that drives the lower knife roller to rotate, and an upper circular knife with an adjustable height position. The front and rear sides of the circular knife mechanism are generally provided with guide rollers with a fixed height position. Before the film slitting process, the film is passed around the guide roller and the lower knife roller; then, the upper circular knife is adjusted downward to a specified height so that the upper circular knife cooperates with the lower knife roller; then, the driving roller of the slitting machine drives the film to move, and at the same time, the rotary drive mechanism drives the lower knife roller to rotate, and the lower knife roller drives the upper circular knife to rotate, thereby realizing the slitting of the film.

[0003] The inventor found in the long-term R&D, production, practical application and maintenance of the slitting machine that when the current circular knife mechanism is used to slitting films of different thicknesses, some films have good edge cutting quality, smooth and straight edges, and no burrs; while some films have poor edge cutting quality, rough and uneven edges, and burrs; especially for optical films with high edge cutting quality requirements, rough and uneven edges, and burrs will directly lead to the film after slitting not meeting the requirements. In the field of machining, for edge cutting quality problems such as rough and uneven edges and burrs, improvements are generally made on the tool aspect; guided by this cognition, the inventor matched the corresponding circular knife mechanism according to the films of different thicknesses in the actual R&D and production process of the slitting machine, and solved the above problems by changing the parameters of the cutting part of the circular knife of the circular knife mechanism, the feed size, etc.; but such improvement not only greatly increases the number of circular knife mechanisms, but also greatly increases the production cost; and the inventor found that even after replacing the corresponding circular knife mechanism according to the films of different thicknesses, the improvement effect on the edge cutting quality of the film is still limited. Summary of the invention

[0004] The purpose of the present invention is to overcome the problem that the slitting machine in the prior art adopts changing the circular knife mechanism to adapt to the slitting of films of different thicknesses, which increases the production cost and has a poor improvement effect on the cutting edge quality of the film. An adjustable slitting device for a slitting machine is provided, which can use the same set of circular knife slitting mechanisms to slitting films of different thicknesses while ensuring the cutting edge quality, thereby reducing the production cost and effectively solving the problem of poor cutting edge quality.

[0005] The technical solution of the present invention is: An adjustable slitting device of a slitting machine, comprising: An adjustable guide roller assembly, including a guide roller and a lifting mechanism for adjusting the height of the guide roller; The circular knife slitting mechanism comprises a lower knife roller with a fixed height position, a rotary drive mechanism for driving the lower knife roller to rotate, and an upper circular knife assembly whose height position can be adjusted by a feed mechanism, wherein the upper circular knife assembly comprises an upper circular knife that is rotatably arranged, and the lower knife roller is parallel to the guide roller; The film of the slitting machine passes around the lower knife roller and the guide roller in turn. The section of film between the lower knife roller and the guide roller tilts downward toward the guide roller. The inclination angle of this section of film is defined as the wrap angle, and the size of the wrap angle is adjusted by adjusting the height of the guide roller. The inventor of the adjustable slitting device of the slitting machine of this scheme overcomes the technical prejudice in the field of machining that the cutting edge is rough and uneven, and there are burrs and other cutting quality problems, and generally improves the tool aspect; the size of the wrap angle is adjusted by adjusting the height of the guide roller to adapt to the slitting of films of different thicknesses. Specifically, Before the film slitting process, the height of the guide roller is adjusted according to the thickness of the film to adjust the size of the wrap angle, and the wrap angle is adjusted to adapt to the slitting process of films of different thicknesses; the inventor found through the actual slitting process of films of different thicknesses that without changing the circular knife slitting mechanism, only by adjusting the size of the wrap angle, the film cutting quality that meets the requirements can be obtained, effectively solving the problems of poor film cutting quality, rough and uneven cutting edges, and the presence of burrs. Therefore, the adjustable slitting device of the slitting machine of this scheme can use the same set of circular knife slitting mechanisms to slitting films of different thicknesses while ensuring the cutting quality, which not only reduces the production cost, but also effectively solves the problem of poor cutting quality.

[0006] Preferably, before the film slitting process, the wrap angle is adjusted by adjusting the height of the guide roller according to the thickness of the film, and the adjustment range of the wrap angle is 3-25 degrees.

[0007] Preferably, for films of the same material, the thicker the film to be slit, the larger the corresponding adjusted wrap angle.

[0008] As a preference, a fixed guide roller with a fixed height position is also included, the fixed guide roller is parallel to the lower knife roller, the fixed guide roller and the guide roller are located on both sides of the lower knife roller, and the film of the slitting machine passes around the fixed guide roller, the lower knife roller and the guide roller in sequence. In this way, the fixed guide roller with a fixed height position cooperates with the lower knife roller and the guide roller to guide the film passing through the lower knife roller, which is conducive to the smooth slitting of the film.

[0009] Preferably, the adjustable guide roller assembly is provided on both the front and rear sides of the lower knife roller, and the film of the slitting machine passes through the guide roller of one of the adjustable guide roller assemblies, the lower knife roller, and the guide roller of the other adjustable guide roller assembly in sequence. In this way, on the one hand, the two guide rollers and the lower knife roller can be used to guide the film passing through the lower knife roller, which is conducive to the smooth slitting of the film; on the other hand, in actual use, the height of the guide roller of one of the adjustable guide roller assemblies can be adjusted as needed to adjust the wrap angle of the corresponding section of the film, so as to adapt to the slitting of films of different thicknesses.

[0010] Preferably, the lower knife roller includes at least one annular knife groove, and the outer edge of an annular side surface of the annular knife groove forms an annular lower blade; the upper circular knife corresponds to the annular knife groove one by one, and the upper circular knife cooperates with the annular lower blade of the corresponding annular knife groove.

[0011] Preferably, the feed mechanism comprises: A support, on which a vertical guide rod is provided; A lifting seat slides along the vertical guide rod, on which a support rod is connected, and the support rod is connected to two connecting arms extending downward; A compression screw threadedly connected to the support and located above the lifting seat; A first spring, under the action of which the lifting seat moves upward and abuts against the lower end of the pressing screw; The upper circular knife assembly includes an upper knife shaft rotatably arranged on two connecting arms, the upper knife shaft is parallel to the lower knife roller, and the upper circular knife is fixed on the upper knife shaft. In this way, the height of the lifting seat can be adjusted by rotating the pressing screw, and then the height position of the support rod, the upper knife shaft and the upper circular knife can be adjusted (that is, the feed distance of the upper circular knife can be adjusted), so that the upper circular knife cooperates with the lower knife roller to achieve the slitting process of the film. On the other hand, compared with the circular knife mechanism in the prior art, the feed mechanism corresponds to the upper circular knife one by one, and the upper circular knife needs to be adjusted one by one when advancing and retracting the knife, which has the problem that the operation remains unchanged and the feed distance consistency of each upper circular knife is difficult to ensure; this solution can adjust the feed distance of each upper circular knife on the upper knife shaft by adjusting the height position of the support rod and the upper knife shaft at the same time, which is not only convenient to operate, but also can ensure the consistency of the feed distance of each upper circular knife.

[0012] Preferably, the lower knife roller includes at least one annular knife groove, and the outer edge of an annular side surface of the annular knife groove forms an annular lower blade; the upper circular knife corresponds to the annular knife groove one by one; the support rod is connected to the lifting seat along the axial sliding of the lower knife roller, and the feed mechanism also includes a second spring and an axial screw threadedly connected to the lifting seat, the second spring and the axial screw are located at both ends of the support rod, and the support rod is against the end of the axial screw under the action of the second spring. The feed operation of the upper circular knife of this scheme is as follows, By turning the pressing screw, the height of the lifting seat is adjusted downward, and the height positions of the support rod, the upper knife shaft and the upper circular knife are adjusted downward to the specified position, so that the edge of the upper circular knife enters the corresponding annular knife groove; Next, by rotating the axial screw, the support rod is driven to move axially, and the upper knife shaft and the upper circular knife are driven to move axially, so that the edge of the upper circular knife is against the annular lower blade of the annular knife groove, thereby realizing the feeding operation of the upper circular knife. After that, the driving roller of the slitting machine drives the film to move, and at the same time, the rotary drive mechanism drives the lower knife roller to rotate, and the lower knife roller drives the upper circular knife to rotate, thereby realizing the slitting of the film.

[0013] Preferably, the feed mechanism further comprises an adjusting screw threadedly connected to the support, which is located below the lifting seat, and the lower end of the lifting seat abuts against the upper end of the adjusting screw. In this way, before the upper circular knife is fed, the height position of the upper end surface of the adjusting screw can be adjusted to determine the feed distance of the upper circular knife in the height direction, which is conducive to ensuring the feed accuracy of the upper circular knife. Specifically, The height position of the upper end face of the adjusting screw is adjusted by rotating the adjusting screw, and the upper end face of the adjusting screw is determined; then, the height of the lifting seat is adjusted downward by rotating the clamping screw until the lifting seat is against the upper end face of the adjusting screw. At this time, the height position of the upper circular knife is adjusted downward to the specified position, so that the cutting edge of the upper circular knife enters the corresponding annular knife groove, thereby completing the feeding of the upper circular knife in the height direction.

[0014] Preferably, shaft seats are provided at both ends of the guide roller, the guide roller is rotatably connected to the shaft seat, the lifting mechanism comprises a rotatably arranged vertical screw, a lifting nut arranged on the vertical screw, and a screw driving mechanism for driving the vertical screw to rotate, and the lifting nut is connected to the shaft seat. In this way, the screw driving mechanism can be used to drive the screw to rotate, thereby driving the shaft seat and the guide roller to rise and fall.

[0015] The beneficial effects of the present invention are: The invention overcomes the problem that the slitting machine in the prior art adopts changing the circular knife mechanism to adapt to the slitting of films of different thicknesses, which increases the production cost and has a poor effect on improving the edge cutting quality of the film.

[0016] The same set of circular knife slitting mechanisms can be used to slit films of different thicknesses while ensuring the quality of the trimming edges, which not only reduces the production cost but also effectively solves the problem of poor trimming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic diagram of a structure of an adjustable slitting device of a slitting machine.

[0018] Figure 2It is a structural schematic diagram of the adjustable guide roller assembly of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the circular knife slitting mechanism of the present invention.

[0020] Figure 4 yes Figure 3 Schematic diagram of a cross-sectional structure at AA in the middle.

[0021] In the figure: Adjustable guide roller assembly 1, guide roller 1.1, shaft seat 1.11, lifting mechanism 1.2, vertical screw rod 1.21, lifting nut 1.22, driving rod 1.23, bevel gear mechanism 1.24, driving hand wheel 1.25; Circular knife slitting mechanism 2, lower knife roller 2.1, upper circular knife assembly 2.2, upper circular knife 2.21, upper knife shaft 2.22, knife feed mechanism 2.3, support 2.31, lifting seat 2.32, clamping screw 2.33, first spring 2.34, clamping nut 2.35, support rod 2.36, connecting arm 2.37, axial screw 2.38, manual knob 2.39, adjusting screw 2.310, pre-tightening screw 2.311, pressure seat 2.312, second spring 2.313, vertical guide rod 2.314; film 3; Wrap angle 4; Fixed guide roller 5; Rack 6. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Specific embodiment 1, as Figure 1-Figure 4 As shown, an adjustable slitting device of a slitting machine includes an adjustable guide roller assembly 1 and a circular knife slitting mechanism 2.

[0023] The adjustable guide roller assembly 1 is mounted on the frame 6 of the slitting machine. The adjustable guide roller assembly 1 includes a guide roller 1.1 and a lifting mechanism 1.2 for adjusting the height of the guide roller 1.1. The lifting mechanism 1.2 can be an electric cylinder or a linear module, which drives the guide roller 1.1 to move up and down, thereby adjusting the height position of the guide roller 1.1.

[0024] The circular knife slitting mechanism 2 is installed on the frame 6 of the slitting machine. The circular knife slitting mechanism 2 includes an upper circular knife assembly 2.2, a lower knife roller 2.1 with a fixed height position, and a rotary drive mechanism for driving the lower knife roller 2.1 to rotate. In this embodiment, the lower knife roller 2.1 is rotatably arranged on the frame 6. The lower knife roller 2.1 is parallel to the guide roller 1.1. The rotary drive mechanism includes a lower knife roller 2.1 drive motor. The height position of the upper circular knife assembly 2.2 is adjusted by the feed mechanism 2.3. The upper circular knife assembly 2.2 includes an upper circular knife 2.21 that is rotatably arranged.

[0025] The film 3 of the slitting machine passes around the lower knife roller 2.1 and the guide roller 1.1 in sequence, and the film between the lower knife roller 2.1 and the guide roller 1.1 tilts downward toward the guide roller 1.1. The inclination angle of this film is defined as the wrap angle 4. The size of the wrap angle 4 is adjusted by adjusting the height of the guide roller 1.1. Before the film slitting process, the size of the wrap angle 4 is adjusted by adjusting the height of the guide roller 1.1 according to the thickness of the film to adapt to the slitting process of films of different thicknesses.

[0026] The inventor of the adjustable slitting device of the slitting machine of this embodiment overcomes the technical prejudice in the field of machining that the cutting edges are rough and not smooth, and there are burrs and other cutting quality problems, and generally improves the tool aspect; the height of the guide roller 1.1 is adjusted to adjust the size of the wrap angle 4 to adapt to the slitting process of films of different thicknesses. Specifically, Before the film slitting process, the height of the guide roller 1.1 is adjusted according to the thickness of the film to adjust the size of the wrap angle 4, and the wrap angle 4 is adjusted to adapt to the slitting process of films of different thicknesses; the inventor found through the actual slitting process of films of different thicknesses that without changing the circular knife slitting mechanism 2, only by adjusting the size of the wrap angle 4, the film edge cutting quality that meets the requirements can be obtained, effectively solving the problems of poor film edge cutting quality, rough and uneven edge cutting, and the presence of burrs. Therefore, the adjustable slitting device of the slitting machine of the embodiment can use the same set of circular knife slitting mechanisms 2 to slitting films of different thicknesses while ensuring the edge cutting quality, which not only reduces the production cost, but also effectively solves the problem of poor edge cutting quality.

[0027] Specific embodiment 2, as Figure 1-Figure 4 As shown, an adjustable slitting device of a slitting machine includes an adjustable guide roller assembly 1 and a circular knife slitting mechanism 2.

[0028] The adjustable guide roller assembly 1 is mounted on the frame 6 of the slitting machine. The adjustable guide roller assembly 1 comprises a guide roller 1.1 and a lifting mechanism 1.2 for adjusting the height of the guide roller 1.1.

[0029] The circular knife slitting mechanism 2 is installed on the frame 6 of the slitting machine. The circular knife slitting mechanism 2 includes an upper circular knife assembly 2.2, a lower knife roller 2.1 with a fixed height position, and a rotary drive mechanism for driving the lower knife roller 2.1 to rotate. In this embodiment, the lower knife roller 2.1 is rotatably arranged on the frame 6. The lower knife roller 2.1 is parallel to the guide roller 1.1. The rotary drive mechanism includes a lower knife roller 2.1 drive motor. The height position of the upper circular knife assembly 2.2 is adjusted by the feed mechanism 2.3. The upper circular knife assembly 2.2 includes an upper circular knife 2.21 that is rotatably arranged.

[0030] The film 3 of the slitting machine passes around the lower knife roller 2.1 and the guide roller 1.1 in sequence, and the film between the lower knife roller 2.1 and the guide roller 1.1 tilts downward toward the guide roller 1.1. The inclination angle of this film is defined as the wrap angle 4. The size of the wrap angle 4 is adjusted by adjusting the height of the guide roller 1.1. Before the film slitting process, the size of the wrap angle 4 is adjusted by adjusting the height of the guide roller 1.1 according to the thickness of the film to adapt to the slitting process of films of different thicknesses.

[0031] For films of the same material, the thicker the film thickness is, the larger the corresponding adjusted wrap angle 4 is. In this embodiment, the adjustment range of the wrap angle 4 is 3-25 degrees. Of course, limiting the adjustment range of the wrap angle 4 to 3-25 degrees is only a preferred limitation of this embodiment. In actual applications, it can be adjusted according to different films.

[0032] The inventor of the adjustable slitting device of the slitting machine of this embodiment overcomes the technical prejudice in the field of machining that the cutting edges are rough and not smooth, and there are burrs and other cutting quality problems, and generally improves the tool aspect; the height of the guide roller 1.1 is adjusted to adjust the size of the wrap angle 4 to adapt to the slitting process of films of different thicknesses. Specifically, Before the film slitting process, the height of the guide roller 1.1 is adjusted according to the thickness of the film to adjust the size of the wrap angle 4. By adjusting the wrap angle 4, the film of different thicknesses can be adapted for slitting. After the actual slitting of films of different thicknesses, the inventor found that without changing the circular knife slitting mechanism 2, only by adjusting the size of the wrap angle 4, the film edge cutting quality that meets the requirements can be obtained, effectively solving the problems of poor film edge cutting quality, rough and uneven edge cutting, and the presence of burrs. The following description takes the slitting of TAC optical films of different thicknesses by the same circular knife slitting mechanism 2 as an example. After actual adjustment and processing verification, when slitting TAC optical film with a thickness of 40μm, the wrap angle 4 is adjusted to 5-7 degrees by adjusting the height of the guide roller 1.1. When the TAC optical film is slid under this wrap angle 4, a TAC optical film with good cutting edge quality, smooth and straight cutting edges and no burrs can be obtained.

[0033] After actual adjustment and processing verification, when slitting TAC optical film with a thickness of 50μm, the wrap angle 4 is adjusted to 8-11 degrees by adjusting the height of the guide roller 1.1. When the TAC optical film is slid under this wrap angle 4, a TAC optical film with good cutting edge quality, smooth and straight cutting edges and no burrs can be obtained.

[0034] After actual adjustment and processing verification, when slitting TAC optical film with a thickness of 57μm, the wrap angle 4 is adjusted to 12-14 degrees by adjusting the height of the guide roller 1.1. When the TAC optical film is slid under this wrap angle 4, a TAC optical film with good cutting edge quality, smooth and straight cutting edges and no burrs can be obtained.

[0035] After actual adjustment and processing verification, when slitting TAC optical film with a thickness of 80μm, the wrap angle 4 is adjusted to 16-18 degrees by adjusting the height of the guide roller 1.1. When the TAC optical film is slid under this wrap angle 4, a TAC optical film with good cutting edge quality, smooth and straight cutting edges and no burrs can be obtained.

[0036] It can be seen that the adjustable slitting device of the slitting machine of this embodiment can use the same set of circular knife slitting mechanism 2 to slit films of different thicknesses while ensuring the quality of cutting edges, which not only reduces the production cost but also effectively solves the problem of poor cutting quality.

[0037] Specifically, the lower knife roller 2.1 includes one or more annular knife grooves distributed in sequence along the axial direction of the lower knife roller 2.1. The annular knife groove has two annular side surfaces, and the outer edge of one of the annular side surfaces is processed to form an annular lower blade. The upper circular knife 2.21 corresponds to the annular knife grooves one by one. The upper circular knife 2.21 cooperates with the annular lower blade of the corresponding annular knife groove.

[0038] Further, such as Figure 2 As shown, shaft seats 1.11 are provided at both ends of the guide roller 1.1. The guide roller 1.1 is rotatably connected to the shaft seat 1.11 through a bearing.

[0039] The specific method of adjusting the height of the guide roller 1.1 by the lifting mechanism 1.2 is as follows: In one implementation of this embodiment, Figure 2 As shown, the lifting mechanism 1.2 comprises a rotatably arranged vertical screw rod 1.21, a lifting nut 1.22 arranged on the vertical screw rod 1.21, and a screw rod driving mechanism for driving the vertical screw rod 1.21 to rotate. The lifting nut 1.22 is connected to the shaft seat.

[0040] In one example, if Figure 2 As shown, there are two vertical screw rods 1.21, which are rotatably arranged on the frame 6. Each vertical screw rod 1.21 is provided with a lifting nut 1.22, and the shaft seats at both ends of the guide roller 1.1 are connected to the lifting nut 1.22 one by one. The screw driving mechanism includes a driving rod 1.23 rotatably arranged on the frame 6, the driving rod 1.23 is parallel to the guide roller 1.1, and the driving rod 1.23 and the vertical screw rod 1.21 are connected by a bevel gear mechanism 1.24. A driving handwheel 1.25 or a handle is provided at one end of the driving rod 1.23, and the driving rod 1.23 is manually driven to rotate by the handwheel or the handle; or a motor (not shown in the figure) is connected to one end of the driving rod 1.23, and the driving rod 1.23 is driven to rotate by the motor. In this way, the driving rod 1.23 can be rotated to drive the screw rod to rotate, and then the shaft seat and the guide roller 1.1 can be driven to rise and fall.

[0041] In another example, there are two vertical screw rods 1.21, which are rotatably arranged on the frame 6. Each vertical screw rod 1.21 is provided with a lifting nut 1.22, and the shaft seats at both ends of the guide roller 1.1 are connected to the lifting nut 1.22 one by one. Each vertical screw rod 1.21 is driven to rotate by a motor (not shown in the figure). In this way, the two vertical screw rods 1.21 can be driven to rotate synchronously by the motor, thereby driving the shaft seat and the guide roller 1.1 to rise and fall.

[0042] In the third example, two vertical guide rails are provided on the frame 6, and sliders are provided on the vertical guide rails. The shaft seats at both ends of the guide roller 1.1 are connected to the sliders of the two vertical guide rails one by one (not shown in the figure). There is one vertical screw rod 1.21, and the lifting nut 1.22 is connected to one of the shaft seats or sliders.

[0043] In another implementation of this embodiment, the lifting mechanism 1.2 uses two electric cylinders or two linear modules (not shown in the figure). The two electric cylinders are connected to the shaft seats at both ends of the guide roller 1.1 one by one, or the two linear modules are connected to the shaft seats at both ends of the guide roller 1.1 one by one. In this way, the shaft seats and the guide roller 1.1 can be driven to rise and fall by the two electric cylinders or two linear modules.

[0044] In the third implementation of this embodiment, two vertical guide rails are provided on the frame 6, and sliders are provided on the vertical guide rails. The shaft seats at both ends of the guide roller 1.1 are connected to the sliders of the two vertical guide rails one by one (not shown in the figure). The lifting mechanism 1.2 adopts an electric cylinder or a linear module. The shaft seat and the guide roller 1.1 are driven to rise and fall by the electric cylinder or the linear module.

[0045] Further, such as Figure 1 , Figure 3 , Figure 4As shown, the feed mechanism 2.3 includes a support 2.31, a lifting seat 2.32, a clamping screw 2.33 and a first spring 2.34. In this embodiment, there are two supports 2.31. The two supports 2.31 are fixedly connected to the opposite sides of the frame 6. A vertical guide rod 2.314 is provided on the support 2.31. The lifting seat 2.32 corresponds to the support 2.31 one by one, and the lifting seat 2.32 slides along the vertical guide rod 2.314 corresponding to the support 2.31. A support rod 2.36 is connected between the two lifting seats 2.32. The support rod 2.36 is parallel to the lower knife roller 2.1. Two connecting arms 2.37 extending downward are fixedly connected to the support rod 2.36. The clamping screw 2.33 corresponds to the support 2.31 one by one, and the clamping screw 2.33 is connected to the corresponding support 2.31 by threading, and the clamping screw 2.33 is vertically distributed. The clamping screw 2.33 is located above the lifting seat 2.32. The lifting seat 2.32 moves upward under the action of the first spring 2.34 and abuts against the lower end of the clamping screw 2.33. In this embodiment, each support 2.31 is provided with a first spring 2.34, and the first spring 2.34 is sleeved on the vertical guide rod 2.314. The lower end of the first spring 2.34 abuts on the support 2.31, and the upper end of the first spring 2.34 abuts on the lifting seat 2.32, so that the lifting seat 2.32 moves upward under the action of the first spring 2.34 and abuts against the lower end of the clamping screw 2.33. The upper circular knife assembly 2.2 includes an upper knife shaft 2.22 rotatably arranged on two connecting arms 2.37. The upper knife shaft 2.22 is parallel to the lower knife roller 2.1. The upper circular knife 2.21 is fixed on the upper knife shaft 2.22. In this embodiment, the upper knife shaft 2.22 is provided with two bearing seats, which are mounted on the two connecting arms 2.37 one by one. In this way, the height of the lifting seat 2.32 can be adjusted by rotating the pressing screw 2.33, and then the height position of the support rod 2.36, the upper knife shaft 2.22 and the upper circular knife 2.21 can be adjusted (i.e., the feeding distance of the upper circular knife 2.21 is adjusted), so that the upper circular knife 2.21 cooperates with the lower knife roller 2.1 to achieve the slitting process of the film. On the other hand, compared with the circular knife mechanism in the prior art, in which the feed mechanism 2.3 corresponds one-to-one to the upper circular knife 2.21, the upper circular knife 2.21 needs to be adjusted one by one when advancing and retracting the knife, and there is a problem that the operation remains unchanged and the consistency of the feed distance of each upper circular knife 2.21 is difficult to ensure; the present solution can adjust the height position of the support rod 2.36 and the upper knife shaft 2.22, while adjusting the feed distance of each upper circular knife 2.21 on the upper knife shaft 2.22. It is not only easy to operate, but also can ensure the consistency of the feed distance of each upper circular knife 2.21.

[0046] In one example, if Figure 3 , Figure 4As shown, a clamping handle is provided at the upper end of the clamping screw 2.33. A clamping nut 2.35 is provided on the clamping screw 2.33, and the clamping nut 2.35 is located above the support 2.31. In this example, the clamping handle is used to drive the clamping screw 2.33 to rotate to adjust the height of the lifting seat 2.32, thereby adjusting the height position of the support rod 2.36, the upper knife shaft 2.22 and the upper circular knife 2.21. After the height position of the upper knife shaft 2.22 and the upper circular knife 2.21 is adjusted to the right position, the clamping nut 2.35 is locked to fix the clamping screw 2.33 to prevent the clamping screw 2.33 from loosening.

[0047] In another example, each support 2.31 is provided with a support motor (not shown in the figure), and the support motor drives the corresponding pressing screw 2.33 to rotate. In this way, the support motor can drive the pressing screws 2.33 on the two supports 2.31 to rotate synchronously to adjust the height of the lifting seat 2.32, thereby adjusting the height position of the support rod 2.36, the upper knife shaft 2.22 and the upper circular knife 2.21.

[0048] Further, such as Figure 3 , Figure 4 As shown, the feed mechanism 2.3 also includes an adjusting screw 2.310 threadedly connected to the support 2.31, and the adjusting screw 2.310 is located below the lifting seat 2.32. The lower end of the lifting seat 2.32 abuts against the upper end of the adjusting screw 2.310. In this way, before the upper circular knife 2.21 is fed, the feeding distance of the upper circular knife 2.21 in the height direction can be determined by adjusting the height position of the upper end face of the above-mentioned adjusting screw 2.310, which is conducive to ensuring the feeding accuracy of the upper circular knife 2.21. Specifically, the height position of the upper end face of the above-mentioned adjusting screw 2.310 is adjusted by rotating the adjusting screw 2.310, and the upper end face of the adjusting screw 2.310 is determined; then, by rotating the clamping screw 2.33, the height of the lifting seat 2.32 is adjusted downward until the lifting seat 2.32 is against the upper end face of the adjusting screw 2.310. At this time, the height position of the upper circular knife 2.21 is adjusted downward to the specified position, so that the cutting edge of the edge of the upper circular knife 2.21 enters the corresponding annular knife groove, thereby completing the feeding of the upper circular knife 2.21 in the height direction.

[0049] Further, such as Figure 3 , Figure 4As shown, the support rod 2.36 is connected to the lifting seat 2.32 in an axial sliding manner along the lower knife roller 2.1. The support rod 2.36 and the lifting seat 2.32 cannot rotate relative to each other. The feed mechanism 2.3 also includes a second spring 2.313 and an axial screw 2.38 threadedly connected to the lifting seat 2.32. The axial screw 2.38 extends along the axial direction of the support rod 2.36. The second spring 2.313 and the axial screw 2.38 are located at both ends of the support rod 2.36, and the support rod 2.36 is pressed against the end of the axial screw 2.38 under the action of the second spring 2.313. The feed operation of the upper circular knife 2.21 of this embodiment is as follows, By turning the pressing screw 2.33, the height of the lifting seat 2.32 is adjusted downward, and the height positions of the support rod 2.36, the upper knife shaft 2.22 and the upper circular knife 2.21 are adjusted downward to a specified position, so that the edge of the upper circular knife 2.21 enters the corresponding annular knife groove; Next, by rotating the axial screw 2.38, the support rod 2.36 is driven to move axially, and the upper knife shaft 2.22 and the upper circular knife 2.21 are driven to move axially, so that the edge of the upper circular knife 2.21 is against the annular lower blade of the annular knife groove, thereby realizing the feeding operation of the upper circular knife 2.21. After that, the driving roller of the slitting machine drives the film to move, and at the same time, the rotary drive mechanism drives the lower knife roller 2.1 to rotate, and the lower knife roller 2.1 drives the upper circular knife 2.21 to rotate, thereby realizing the slitting of the film.

[0050] In one example, if Figure 3 As shown, a manual knob 2.39 is provided on one end of the axial screw rod 2.38 facing away from the support rod 2.36. In this example, the manual knob is used to drive the axial screw rod 2.38 to rotate, thereby driving the support rod 2.36 to move axially.

[0051] In another example, the axial screw 2.38 is driven to rotate by a screw motor (not shown in the figure), and the screw motor is installed on the frame 6 or the support 2.31. In this way, the axial screw 2.38 can be driven to rotate by the screw motor, thereby driving the support rod 2.36 to move axially.

[0052] Further, such as Figure 3As shown, the feed mechanism 2.3 also includes a pre-tightening screw 2.311 and a pressure seat 2.312. The pre-tightening screw 2.311, the pressure seat 2.312 and the second spring 2.313 are located on the same side of the support rod 2.36. The pre-tightening screw 2.311 is threadedly connected to the lifting seat 2.32, and the pre-tightening screw 2.311 and the axial screw 2.38 are located on both sides of the support rod 2.36. The pressure seat 2.312 is slidably arranged on the lifting seat 2.32. The pre-tightening screw 2.311, the pressure seat 2.312, the second spring 2.313 and the support rod 2.36 are sequentially distributed along the axial direction of the support rod 2.36. The second spring 2.313 is located between the support rod 2.36 and the pressure seat 2.312. The pressure seat 2.312 is pressed against the end of the pre-tightening screw 2.311 under the action of the second spring 2.313. In this way, the pressure seat 2.312 can be pushed to move by loosening or tightening the pre-tightening screw 2.311, thereby adjusting the pre-tightening force of the second spring 2.313 acting on the support rod 2.36.

[0053] Specific embodiment 3: The rest of the structure of this embodiment refers to specific embodiment 2, except that: like Figure 1 As shown, an adjustable slitting device of a slitting machine also includes a fixed guide roller 5 with a fixed height position. The fixed guide roller 5 is rotatably arranged on a frame 6. The fixed guide roller 5 is parallel to the lower knife roller 2.1. The fixed guide roller 5 and the guide roller 1.1 are located on both sides of the lower knife roller 2.1, and the film of the slitting machine passes around the fixed guide roller, the lower knife roller 2.1 and the guide roller 1.1 in sequence. In this way, the fixed guide roller with a fixed height position can cooperate with the lower knife roller 2.1 and the guide roller 1.1 to guide the film passing through the lower knife roller 2.1, which is conducive to the smooth slitting of the film.

[0054] In one embodiment, Figure 1 As shown, the fixed guide roller 5 is located at the front side of the lower knife roller 2.1, and the guide roller 1.1 is located at the rear side of the lower knife roller 2.1. The film of the slitting machine first passes around the fixed guide roller, and then passes around the lower knife roller 2.1 and the guide roller 1.1 in sequence.

[0055] In another embodiment, the fixed guide roller is located behind the lower knife roller 2.1, and the guide roller 1.1 is located in front of the lower knife roller 2.1 (not shown in the figure). The film of the slitting machine first passes around the guide roller 1.1, and then passes around the lower knife roller 2.1 and the fixed guide roller in turn.

[0056] Specific embodiment 4: The rest of the structure of this embodiment refers to specific embodiment 2, except that: In this embodiment, the front and rear sides of the lower knife roller 2.1 are both provided with the adjustable guide roller assembly 1 (not shown in the figure), that is, there are two adjustable guide roller assemblies 1, the guide roller 1.1 of one adjustable guide roller assembly 1 is located at the front side of the lower knife roller 2.1, and the guide roller 1.1 of the other adjustable guide roller assembly 1 is located at the rear side of the lower knife roller 2.1. The film of the slitting machine passes through the guide roller 1.1 of one of the adjustable guide roller assemblies 1, the lower knife roller 2.1 and the guide roller 1.1 of the other adjustable guide roller assembly 1 in sequence. In this way, on the one hand, the film passing through the lower knife roller 2.1 can be guided by the two guide rollers 1.1 and the lower knife roller 2.1, which is conducive to the smooth slitting of the film. On the other hand, in actual use, the height of the guide roller 1.1 of one of the adjustable guide roller assemblies 1 can be selected and adjusted as needed to adjust the size of the wrap angle 4 of the corresponding section of the film to adapt to the slitting process of films of different thicknesses.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An adjustable slitting device for a slitting machine, characterized in that: include: An adjustable guide roller assembly, including a guide roller and a lifting mechanism for adjusting the height of the guide roller; The circular knife slitting mechanism comprises a lower knife roller with a fixed height position, a rotary drive mechanism for driving the lower knife roller to rotate, and an upper circular knife assembly whose height position can be adjusted by a feed mechanism, wherein the upper circular knife assembly comprises an upper circular knife that is rotatably arranged, and the lower knife roller is parallel to the guide roller; The film of the slitting machine passes around the lower knife roller and the guide roller in sequence. The section of film between the lower knife roller and the guide roller tilts downward toward the guide roller. The inclination angle of this section of film is defined as the wrap angle, and the size of the wrap angle is adjusted by adjusting the height of the guide roller.

2. The adjustable slitting device of a slitting machine according to claim 1, characterized in that: Before the film slitting process, the wrap angle is adjusted by adjusting the height of the guide roller according to the thickness of the film, and the adjustment range of the wrap angle is 3-25 degrees.

3. The adjustable slitting device of a slitting machine according to claim 1, characterized in that: For films of the same material, the thicker the film is, the larger the corresponding wrap angle is.

4. The adjustable slitting device of a slitting machine according to claim 1, 2 or 3, characterized in that: It also includes a fixed guide roller with a fixed height position, the fixed guide roller is parallel to the lower knife roller, the fixed guide roller and the guide roller are located on both sides of the lower knife roller, and the film of the slitting machine passes around the fixed guide roller, the lower knife roller and the guide roller in turn.

5. The adjustable slitting device of a slitting machine according to claim 1, 2 or 3, characterized in that: The adjustable guide roller assemblies are arranged on both the front and rear sides of the lower knife roller, and the film of the slitting machine passes around the guide roller of one of the adjustable guide roller assemblies, the lower knife roller and the guide roller of the other adjustable guide roller assembly in sequence.

6. The adjustable slitting device of a slitting machine according to claim 1, 2 or 3, characterized in that: The lower knife roller includes at least one annular knife groove, and the outer edge of an annular side surface of the annular knife groove forms an annular lower blade; the upper circular knife corresponds to the annular knife groove one by one, and the upper circular knife cooperates with the annular lower blade of the corresponding annular knife groove.

7. The adjustable slitting device of a slitting machine according to claim 1, 2 or 3, characterized in that: The feed mechanism comprises: A support, on which a vertical guide rod is provided; A lifting seat slides along the vertical guide rod, on which a support rod is connected, and the support rod is connected to two connecting arms extending downward; A compression screw threadedly connected to the support and located above the lifting seat; A first spring, under the action of which the lifting seat moves upward and abuts against the lower end of the pressing screw; The upper circular knife assembly comprises an upper knife shaft rotatably arranged on two connecting arms, the upper knife shaft is parallel to the lower knife roller, and the upper circular knife is fixed on the upper knife shaft.

8. The adjustable slitting device of a slitting machine according to claim 7, characterized in that: The lower knife roller includes at least one annular knife groove, and the outer edge of an annular side surface of the annular knife groove forms an annular lower blade; the upper circular knife corresponds to the annular knife groove one by one; the support rod is connected to the lifting seat along the axial sliding of the lower knife roller, and the feed mechanism also includes a second spring and an axial screw threadedly connected to the lifting seat, the second spring and the axial screw are located at both ends of the support rod, and the support rod is against the end of the axial screw under the action of the second spring.

9. The adjustable slitting device of a slitting machine according to claim 7, characterized in that: The feed mechanism also includes an adjusting screw which is threadedly connected to the support and is located below the lifting seat, and the lower end of the lifting seat abuts against the upper end of the adjusting screw.

10. The adjustable slitting device of a slitting machine according to claim 1, 2 or 3, characterized in that: Axle seats are provided at both ends of the guide roller, and the guide roller is rotatably connected to the axle seat. The lifting mechanism includes a rotatably arranged vertical screw, a lifting nut arranged on the vertical screw, and a screw driving mechanism for driving the vertical screw to rotate, and the lifting nut is connected to the axle seat.

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