Film cutting device

Abstract

The utility model discloses a film cutting device which comprises a rack and a film cutting unit. The film cutting unit is installed on the machine frame and comprises a film cutting roller and a grooving roller, a blade is arranged on the film cutting roller, the grooving roller is connected to the film cutting roller, a cutting channel is formed between the grooving roller and the film cutting roller, a guide groove is formed in the grooving roller, the blade can move and be positioned in the cutting channel, and the guide groove is connected with the film cutting roller. The blade is positionable into the guide slot. According to the grooving roller of the film cutting device, the blade on the film cutting roller can be accurately fixed through the guide groove, and deformation damage caused by extrusion after a film deviates to the blade is reduced.

Description

Technical Field

[0001] This utility model relates to the field of membrane stripping equipment, and in particular to a membrane cutting device. Background Technology

[0002] Coated steel strip is a widely used metal material. Traditional steel strip laminating machines usually have a film cutting device fixed at their input end. Before the film is conveyed to the steel strip laminating machine, the blades in the film cutting device cut the film so that the width of the film is equal to the width of the steel strip, and then the film is covered on the steel strip.

[0003] However, during the lamination process, the unattached parts of the film may shift as the steel belt moves laterally, causing the blades of the film cutting equipment to bend due to the influence of the film, thus affecting the film cutting effect. Therefore, there is an urgent need for a film cutting device that can reduce the adverse effects of film shift on the film cutting blades. Utility Model Content

[0004] The purpose of this utility model is to provide a film cutting device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is:

[0006] A film cutting device, comprising:

[0007] frame;

[0008] A film cutting unit is mounted on the frame. The film cutting unit includes a film cutting roller and a grooving roller. A blade is provided on the film cutting roller. The grooving roller is connected to the film cutting roller. A cutting channel is formed between the grooving roller and the film cutting roller. A guide groove is provided on the grooving roller. The blade can move and be positioned within the cutting channel. The blade can be positioned within the guide groove.

[0009] This technical solution has at least the following beneficial effects: Before film cutting begins, the film is passed through the cutting channel, and then the blade is moved and positioned in the guide groove. When the film shifts due to the movement of the steel belt during the lamination process, the guide groove is provided on the grooving roller, and the blade can be positioned in the guide groove. Even if the film shifts and applies external force to the blade, the blade can be buffered or limited to a certain extent along the guide groove. This prevents the blade from easily bending due to the irregular external force caused by the film shift, thereby effectively reducing the adverse effects of film shift on the film cutting blade, maintaining a stable film cutting effect of the film cutting device, extending the service life of the blade, and ensuring that the film cutting work can be carried out continuously and reliably.

[0010] As a further improvement to the above technical solution, the cutting roller and the grooving roller are arranged in a centered manner.

[0011] By aligning the cutting roller and the grooving roller, the projection of the blade on the cutting roller onto the plane overlaps with the projection of the grooving roller onto the same plane, allowing the blade to fall stably onto the grooving roller.

[0012] As a further improvement to the above technical solution, multiple guide grooves are arranged at intervals along the length of the film cutting roller. The blade is detachably connected to the film cutting roller. When it is necessary to change the film cutting width, simply remove the blade and reinstall it at the corresponding width position on the film cutting roller, and then move the blade to engage with the guide groove of the corresponding width. This will change the film cutting position, so that no matter where the film edge is located, the blade has more corresponding guide grooves for positioning, making the blade position adapt to the bandwidth of the film and ensuring the stability of the film cutting effect.

[0013] As a further improvement to the above technical solution, the film-cutting roller is provided with at least two sets of blades spaced apart along its own length, forming a film-cutting gap between the two sets of blades. By providing two sets of blades, when the film is placed between the two blades, it is trimmed from both sides, which can further limit the width direction of the film and reduce the workload of trimming the film after it is attached to the steel strip.

[0014] As a further improvement to the above technical solution, the film cutting device also includes a driving component. This driving component is used to move and position the film cutting unit on the frame. The direction of movement of the film cutting unit is parallel to the projection direction of the film cutting roller's length line on the horizontal plane. When the steel strip passes through the steel strip laminator, the steel strip may deviate horizontally. The driving component promptly drives the entire film cutting unit to move laterally with the steel strip on the horizontal plane. Based on the position of the steel strip on the laminator, the relative position of the blade and the film is adjusted in a timely manner, ensuring that the blade is always located at the edge of the film to be cut, thereby cutting a film of appropriate width.

[0015] As a further improvement to the above technical solution, one end of the film-cutting roller is inclined downwards. The driving component includes a guide roller, which is rotatably mounted on the film-cutting roller or the grooving roller. The guide roller is located on the upward-facing side of the cutting channel and extends in the vertical direction. When the steel strip laminating machine starts working, it drives the steel strip to move. At this time, the guide roller abuts against one side of the steel strip. When the steel strip shifts towards the guide roller, the guide roller drives the entire film-cutting unit to move horizontally upwards on the frame. When the steel strip shifts away from the guide roller, the film-cutting unit moves downwards on the frame under its own weight until the guide roller abuts against the steel strip, realizing the follow-up movement between the film-cutting unit and the steel strip. This drives the blade to move relative to the film in the cutting channel, changing the contact point between the blade and the film, thereby modifying the position of the cut portion of the film on the entire film, so that the cut portion of the film matches the position of the steel strip, better covering the surface of the steel strip.

[0016] As a further improvement to the above technical solution, two first pulleys are arranged at intervals along the length direction of the cutting roller on the frame. The length direction of the grooving roller is tangent to the outer diameter of the first pulleys. The grooving roller is installed between the two first pulleys, and the end of the grooving roller is installed on the top of the first pulleys. The first pulleys convert sliding friction into rolling friction, reducing the overall movement resistance of the cutting unit on the frame and improving the stability of the cutting unit as it moves with the steel belt.

[0017] As a further improvement to the above technical solution, the frame has a second pulley above the plurality of first pulleys. The rotation direction of the second pulley is opposite to that of the first pulley, and an installation gap is formed between the second pulley and the first pulley. The grooving roller is installed within the installation gap. Through the cooperation of the second pulley and the first pulley, the grooving roller is confined within the installation gap, which improves the radial movement stability of the grooving roller and prevents it from moving in a direction perpendicular to its own axial direction, thus preventing the entire film cutting unit from detaching from the frame.

[0018] As a further improvement to the above technical solution, the cutting roller can rotate relative to the frame, and the axis of rotation of the cutting roller is parallel to the straight line along its own length. The cutting roller can rotate until the blade enters or leaves the guide groove. By rotating the cutting roller, multiple blades are simultaneously driven to rotate within the cutting channel, thereby disengaging from or entering the corresponding guide groove, reducing the workload of adjusting each blade individually.

[0019] As a further improvement to the above technical solution, the film cutting unit is equipped with a hand-cranked reducer, and the film cutting roller is connected to the output end of the hand-cranked reducer. The hand-cranked reducer allows for quick and stable control of the film cutting roller's rotation, thereby adjusting the blade's position and enabling rapid separation of the blade from the film. This facilitates quick machine stoppage and equipment adjustments by the operator. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the working state of the film cutting device of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the film cutting device of this utility model;

[0023] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0024] Figure 4 This is a side view of the film cutting device of this utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of the first and second pulleys of this utility model.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Cutting roller; 11. Blade; 2. Grooving roller; 21. Guide groove; 3. Connecting frame; 4. Cutting channel; 5. Drive component; 51. Guide roller; 6. First pulley; 7. Second pulley; 8. Hand-cranked reducer. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] In existing steel strip lamination production, the steel strip and film are simultaneously unwound and fed into the laminator. The laminator adheres the film to the surface of the steel strip. Under normal circumstances, the film remains stable within the cutting channel, and the blades cut the film according to pre-set positions, ensuring the film width matches the steel strip width requirements and guaranteeing smooth lamination. However, the rollers inside the steel strip laminator may cause the steel strip to deviate, resulting in a shift in the film adhered to the steel strip surface. This ultimately subjects the blades of the film-cutting device placed at the input end of the steel strip laminator to pressure caused by the film shift. After prolonged operation, this can lead to blade bending and damage. Therefore, the inventor provides a film-cutting device that reduces the adverse effects of film shift on the blades.

[0033] This application provides a film cutting device comprising:

[0034] Reference Figure 1 The frame is located between the input end of the steel strip laminator and the output end of the film unwinding device. The film unwinding device is used to release the film and can work together with the steel strip laminator to stretch the film.

[0035] Reference Figure 2 and Figure 3The film cutting unit is mounted on the frame and includes a film cutting roller 1 and a grooving roller 2. The film cutting roller 1 is provided with a blade 11, which extends outward in a direction perpendicular to the axis of the film cutting roller 1. The grooving roller 2 is connected to the film cutting roller 1 and is arranged parallel to the film cutting roller 1. A cutting channel 4 for the film to pass through is formed between the grooving roller 2 and the film cutting roller 1. The grooving roller 2 is provided with a guide groove 21 (not all of the guide groove 21 is shown in the figure). The end of the blade 11 away from the film cutting roller 1 can move and be positioned in the cutting channel 4 in the direction of entering and exiting the cutting channel 4. The end of the blade 11 can be positioned to abut against the guide groove 21.

[0036] After the film passes through the cutting channel 4, the blade 11 is moved and passes through the film to abut against the guide groove 21. Then, the steel belt laminator and film unwinding device can be started to begin the lamination operation. When the steel belt deviates during the conveying process, causing the film to deviate to one side of its own length, the film body squeezes the blade 11 on that side. At this time, the two ends of the blade 11 are fixed by the cutting roller 1 and the guide groove 21, and the blade 11 is in a state where both ends are stably constrained. Even if the film applies lateral pressure to the blade 11, this pressure will not easily cause the end of the blade 11 to deform or bend. This is because the fixation of the two ends of the blade 11 restricts its range of motion when squeezed by the film, allowing it to maintain a relatively stable posture within the cutting channel 4. Thus, the film can still be cut relatively accurately, avoiding the impact of the cutting effect due to the deformation and bending of the blade 11. This ensures that the width of the film used for subsequent lamination can always be kept within a suitable range, so that the lamination operation can continue and be carried out stably. This effectively solves the problem that the blade 11 is easily affected when the traditional film cutting device faces film deviation.

[0037] As a further preferred embodiment, the cutting roller 1 and the grooving roller 2 are centered, and the centering of the two makes their axes parallel to each other in the same plane, so that the blade 11 mounted on the cutting roller 1 can fall stably onto the grooving roller 2.

[0038] As a further preferred embodiment, multiple guide grooves 21 are arranged at intervals along the length of the film cutting roller 1. The blade 11 is detachably connected to the film cutting roller 1. When it is necessary to adjust the film cutting width, the blade 11 is disassembled and installed to the corresponding position, and then snapped into the guide groove 21 at that position. In this way, regardless of the width of the film, the guide groove 21 can always snap the end of the blade 11, and cooperate with the film cutting roller 1 to fix the blade 11 from both ends.

[0039] In order to cut the film on both sides, the film cutting roller 1 is provided with at least two sets of blades 11 at intervals along its own length direction. A cutting gap is formed between the two sets of blades 11. The bandwidth of the film is less than the length of the cutting channel 4 and greater than the length of the cutting gap. This ensures that the film is always located between the cutting gaps, so as to achieve sufficient cutting.

[0040] When the steel strip shifts, if the film cutting unit still cuts the film along the old path, the cut film may be too large or too small, making it difficult to completely cover the steel strip, or the excess film may require secondary trimming, increasing the workload. Therefore, the film cutting device provided in this application also includes a drive unit 5, as shown in the reference... Figure 2 and Figure 4 The drive unit 5 is used to drive the entire film cutting unit to move on the frame. The direction of movement of the film cutting unit is parallel to the extension direction of the projection of the length of the film cutting roller 1 onto the horizontal plane. By adjusting the film cutting unit through the drive unit 5, the film cutting unit always moves with the steel belt, so that the pre-adjusted blade 11 can face the two sides of the steel belt, thereby cutting the film and ensuring that the cut film always conforms to the width of the steel belt and can completely cover the steel belt.

[0041] Specifically, the film cutting unit also includes a connecting frame 3. A connecting frame 3 is provided at both ends of the grooving roller 2 along its own length direction. Each connecting frame 3 is connected to the end of the grooving roller 2 at one end and to the end of the film cutting roller 1 at the other end. The grooving roller 2 and the connecting frame 3, as well as the film cutting roller 1 and the connecting frame 3, are all fixedly connected by bolts. Through the connecting frame 3, the grooving roller 2 and the film cutting roller 1 become a whole, which facilitates the adjustment of the entire film cutting unit. In this way, only the grooving roller 2 or the film cutting roller 1 needs to be adjusted, and the remaining part of the film cutting unit can be moved synchronously on the frame through the connecting frame 3. This reduces the drive structure required to drive the movement of each part of the film cutting unit and reduces the cost of the whole machine.

[0042] In some embodiments, the cutting roller 1 and the grooving roller 2 are both inclined downwards at the same end on the frame. The driving component 5 includes a guide roller 51, which is rotatably mounted on the cutting roller 1 or the grooving roller 2. In this embodiment, the guide roller 51 is mounted on the cutting roller 1 and is located on the side of the cutting channel 4 facing upwards. The guide roller 51 extends in the vertical direction.

[0043] When the steel strip laminating machine starts working, it drives the steel strip to move. At this time, the guide roller 51 abuts against one side of the steel strip. When the steel strip shifts towards the guide roller 51, the guide roller 51 drives the entire film cutting unit to move horizontally upward on the frame. When the steel strip shifts away from the guide roller 51, the film cutting unit moves downward on the frame under its own weight until the guide roller 51 abuts against the steel strip, realizing the follow-up movement between the film cutting unit and the steel strip. This drives the blade 11 to move relative to the film in the cutting channel 4, changing the contact point between the blade 11 and the film, thereby modifying the position of the cut part of the film on the entire film, so that the cut part of the film matches the position of the steel strip, and better covers the surface of the steel strip.

[0044] As a further preferred embodiment, a counterweight is provided at the downward end of the film cutting roller 1. The counterweight can further increase the gravitational potential energy of the entire film cutting unit, so that the film cutting unit can move downward faster.

[0045] In other embodiments, the driving component 5 is a driving cylinder, which is mounted on the frame. The output end of the driving cylinder is connected to the grooving roller 2. A distance sensor and a controller are provided on the frame. The distance sensor is used to sense the offset distance of the steel strip edge on the horizontal plane. The controller is used to control the extension and retraction distance of the output end of the driving cylinder. When the distance sensor senses the offset of the steel strip, the controller controls the output end of the driving cylinder to drive the grooving roller 2 to move the same distance, so that the entire film cutting unit is always kept directly above the steel strip to cut the film, and the film is cut by two sets of blades 11 with a preset film cutting gap.

[0046] Two first pulleys 6 are arranged at intervals along the length of the cutting roller 1 on the frame. The straight line along the length of the grooving roller 2 is tangent to the outer diameter of the first pulley 6. The grooving roller 2 is installed between the two first pulleys 6, and the end of the grooving roller 2 is installed on the top of the first pulley 6. Through the first pulleys 6, the friction between the grooving roller 2 and the frame is changed into rolling friction. Compared with sliding friction, this further reduces the resistance of the grooving roller 2 moving on the frame, making the movement of the grooving roller 2 smoother. Under the connecting action of the connecting frame 3, the cutting roller 1 is synchronously driven to move axially on the frame, thereby realizing the follow-up of the steel strip by the entire cutting unit.

[0047] Reference Figure 5Above each of the multiple first pulleys 6, a second pulley 7 is provided on the frame. The straight line along the length of the grooving roller 2 is tangent to the outer diameter of the second pulley 7. The rotation direction of the second pulley 7 is opposite to that of the first pulley 6. An installation gap is formed between the second pulley 7 and the first pulley 6, and the grooving roller 2 is installed within the installation gap. By limiting the grooving roller 2 from both the top and bottom sides, the risk of the grooving roller 2 detaching from the first pulley 6 and the second pulley 7 and causing the entire film cutting unit to detach from the frame is reduced, thus improving the overall installation stability of the film cutting unit on the frame.

[0048] As a further preferred embodiment, the end section of the grooving roller 2 is rectangular, and the installation gap is rectangular and adapted to the end of the grooving roller 2. By having a rectangular structure with sharp corners, the rotation of the grooving roller 2 relative to the first pulley 6 and the second pulley 7 is reduced, thereby reducing the rotation of the entire film cutting unit along the axis of the grooving roller 2, and further improving the installation stability of the entire film cutting unit on the frame.

[0049] To enable timely adjustment of the position of the blade 11 relative to the grooving roller 2, and to facilitate timely disengagement and engagement of the blade 11, the cutting roller 1 can rotate relative to the frame on the connecting frame 3. The axis of rotation of the cutting roller 1 is parallel to the straight line along its own length. The cutting roller 1 can rotate until the blade 11 enters or disengages from the guide groove 21. By rotating the cutting roller 1, all blades 11 on the cutting roller 1 can be adjusted in a timely manner, reducing the workload of workers adjusting the position of each blade 11 individually.

[0050] The film cutting unit is equipped with a hand-cranked reducer 8, which is fixedly installed on the connecting frame 3. The film cutting roller 1 is connected to the output end of the hand-cranked reducer 8. Through the hand-cranked reducer 8, the rotation of the film cutting roller 1 can be controlled quickly and stably, thereby adjusting the position of the blade 11 so that the blade 11 can be quickly separated from the film, which makes it easy for workers to quickly stop the machine and adjust the equipment.

[0051] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A film cutting device, characterized in that, include: frame; A film cutting unit is installed on the frame. The film cutting unit includes a film cutting roller (1) and a grooving roller (2). A blade (11) is provided on the film cutting roller (1). The grooving roller (2) is connected to the film cutting roller (1). A cutting channel (4) is formed between the grooving roller (2) and the film cutting roller (1). A guide groove (21) is provided on the grooving roller (2). The blade (11) can move and be positioned in the cutting channel (4). The blade (11) can be positioned in the guide groove (21).

2. The film cutting device according to claim 1, characterized in that, The cutting roller (1) and the grooving roller (2) are arranged centered.

3. The film cutting device according to claim 2, characterized in that, The guide grooves (21) are arranged in multiple intervals along the length of the cutting roller (1), and the blade (11) is detachably connected to the cutting roller (1).

4. The film cutting device according to claim 2, characterized in that, The cutting roller (1) is provided with at least two sets of blades (11) spaced apart along its own length, and a cutting gap is formed between the two sets of blades (11).

5. A film-cutting device according to claim 2, characterized in that, The film cutting device further includes a drive unit (5), which is used to drive the film cutting unit to move and position on the frame. The direction of movement of the film cutting unit is parallel to the projection extension direction of the length line of the film cutting roller (1) on the horizontal plane.

6. A film-cutting device according to claim 5, characterized in that, One end of the cutting roller (1) is inclined downwards. The driving member (5) includes a guide roller (51). The guide roller (51) is rotatably mounted on the cutting roller (1) or the grooving roller (2). The guide roller (51) is located on the side of the cutting channel (4) facing upwards. The guide roller (51) extends in the vertical direction.

7. A film-cutting device according to claim 6, characterized in that, Two first pulleys (6) are arranged at intervals along the length direction of the cutting roller (1) on the frame. The length direction of the grooving roller (2) is tangent to the outer diameter of the first pulley (6). The grooving roller (2) is installed between the two first pulleys (6), and the end of the grooving roller (2) is installed on the top of the first pulley (6).

8. A film-cutting device according to claim 7, characterized in that, The frame has a second pulley (7) above each of the first pulleys (6). The rotation direction of the second pulley (7) is opposite to that of the first pulley (6). An installation gap is formed between the second pulley (7) and the first pulley (6). The grooving roller (2) is installed in the installation gap.

9. A film-cutting device according to claim 2, characterized in that, The cutting roller (1) can rotate relative to the frame. The axis of rotation of the cutting roller (1) is parallel to the straight line of its own length direction. The cutting roller (1) can rotate until the blade (11) enters or leaves the guide groove (21).

10. A film-cutting device according to claim 9, characterized in that, The film cutting unit is equipped with a hand-cranked reducer (8), and the film cutting roller (1) is connected to the output end of the hand-cranked reducer (8).

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