Aluminum foil slitting machine

Abstract

The present invention relates to an aluminum foil slitting machine. The machine comprises a frame, a first adjusting roller disposed on a side wall of the frame near an unwinder, a first adjusting slot disposed on the side wall of the frame opposite the first adjusting roller, the path of the first adjusting slot being in the shape of an upper left circular arc, a first drive assembly disposed within the frame for driving the first adjusting roller to move along the first adjusting slot, a second adjusting roller disposed on a side wall of the frame near an upper winder, the path of the second adjusting slot being identical to the path of the first adjusting slot, and a third adjusting roller disposed on a side wall of the frame near a lower winder, the path of the third adjusting slot being symmetrical with the path of the second adjusting slot, and the first, second, and third drive assemblies having identical structures. By providing the first, second, and third adjusting rollers, the present invention more accurately controls changes in tension during the aluminum foil slitting process.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum foil processing and production, in particular to an aluminum foil slitting machine. Background Art

[0002] After printing and coating, aluminum foil needs to be slit on a slitting machine to cut the large roll of semi-finished product into the required specifications. The slitting process involves unwinding and rewinding the semi-finished product, which involves controlling the machine's speed and tension. Tension is a force that stretches and tightens the foil to pull it onto the core. This force is called tension.

[0003] As the unwinding diameter decreases, the unwinding speed needs to be increased. As the rewinding diameter increases, the rewinding speed needs to be slowed down to maintain tension balance. Currently, when the roll diameter changes to a certain level during the unwinding or rewinding process, the motor speed is controlled to a certain value to control the unwinding and rewinding speeds of the aluminum foil roll and achieve dynamic tension control. However, the roll diameter changes slowly during unwinding and rewinding, while the motor speed changes are controlled instantaneously by the controller. This makes the tension change control during this process imprecise. Summary of the Invention

[0004] The object of the present invention is to provide an aluminum foil slitting machine, which can more accurately control the change of tension during the aluminum foil slitting process by arranging a first adjusting roller, a second adjusting roller and a third adjusting roller.

[0005] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0006] An aluminum foil slitting machine includes an unwinder, a plurality of guide rollers, a slitting mechanism for slitting aluminum foil, an upper winder, a lower winder, a frame for installing various mechanical components, and a control system. A first adjusting roller is provided on the side wall of the frame close to the unwinder, a first adjusting groove is provided on the side wall of the frame opposite to the first adjusting roller, and the path of the first adjusting groove is in the shape of an upper left circular arc. A first driving component for driving the first adjusting roller to move along the first adjusting groove is provided inside the frame, a second adjusting roller is provided on the side wall of the frame close to the upper winder, a second adjusting groove is provided on the side wall of the frame opposite to the second adjusting roller, and the second adjusting groove The path of the first adjusting groove is the same as the path of the first adjusting groove, and a second driving component for driving the second adjusting roller to move along the second adjusting groove is provided inside the frame, and a third adjusting roller is provided on the side wall of the frame close to the lower winder, and a third adjusting groove is provided on the side wall of the frame opposite to the third adjusting roller, and the path of the third adjusting groove is symmetrical with the path of the second adjusting groove in the upper and lower parts, and a third driving component for driving the third adjusting roller to move along the third adjusting groove is provided inside the frame, and the structures of the first driving component, the second driving component and the third driving component are the same, and the first driving component, the second driving component and the third driving component are all electrically connected to the control system.

[0007] Preferably, the first adjustment slot, the second adjustment slot and the third adjustment slot are each provided with a plurality of them spaced apart in an upper and lower direction, one end of the plurality of the first adjustment slots is connected through a movable slot vertically opened on the side wall of the frame, and movable slots are also provided between the plurality of the second adjustment slots and the third adjustment slots.

[0008] Preferably, the first driving assembly includes a lifting cylinder vertically fixed inside the frame, the telescopic rod end of the lifting cylinder is horizontally provided with a mounting plate, the upper surface of the mounting plate is fixedly connected to a driving motor, the output end of the driving motor is coaxially fixedly connected to a driving wheel, the driving wheel is fixedly connected to a connecting rod on the side wall away from the driving motor, the other end of the connecting rod is fixedly connected to a driven wheel, the driven wheel is coaxially fixedly connected to a fixed shaft, the other end of the fixed shaft passes through a first adjusting slot and is coaxially fixedly connected to the first adjusting roller, the lifting cylinder and the driving motor are both electrically connected to a control system, and the connection method of the second driving assembly and the third driving assembly to the second adjusting roller and the third adjusting roller is the same as the connection method of the first driving assembly to the first adjusting roller.

[0009] Preferably, tension sensors are provided on the side wall of the frame between the first adjusting roller and the slitting mechanism and between the slitting mechanism and the second adjusting roller and the third adjusting roller, and each of the tension sensors is electrically connected to the control system. Three alarm lights are provided on the side wall of the frame, each of the alarm lights corresponds to a tension sensor, and the alarm lights are electrically connected to the control system.

[0010] Preferably, the unwinder, upper winder, lower winder and drive motor are all servo motors.

[0011] In summary, the beneficial technical effects of the present invention are:

[0012] As the aluminum foil roll decreases in diameter during unwinding, the control system increases the speed of the unwinder's servo motor to maintain tension balance. During the period before the unwinder's servo motor accelerates, the control system adjusts the position of the first adjusting roller to maintain dynamic tension balance on both sides of the first adjusting roller. Similarly, the tension on both sides of the second and third adjusting rollers remains dynamically balanced. By combining speed changes with adjustments to each adjusting roller, tension changes are more precisely controlled, maintaining balanced tension throughout the entire foil slitting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a schematic diagram showing the connection structure of the lifting cylinder, the driving wheel, and the driven wheel;

[0015] Figure 3 yes Figure 2 Schematic diagram of the front view structure.

[0016] In the figure, 1. Unwinder; 2. Frame; 21. First adjusting slot; 22. Second adjusting slot; 23. Third adjusting slot; 24. Moving slot; 25. Lifting cylinder; 26. Mounting plate; 27. Driving motor; 281. Active pulley; 282. Driven pulley; 29. ​​Connecting rod; 3. Guide roller; 32. Alarm light; 41. First adjusting roller; 42. Second adjusting roller; 43. Third adjusting roller; 5. Slitting mechanism; 6. Reeling mechanism; 7. Upper winder; 8. Lower winder; 9. Tension sensor. Implementation Method

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] refer to Figure 1-Figure 3, is an aluminum foil slitting machine disclosed in the present invention, comprising an unwinder 1, a frame 2, an upper rewinder 7, and a lower rewinder 8. The aluminum foil blank is mounted on the unwinder 1 and is rotated and unwound by a servo motor. Five guide rollers 3 are fixedly provided on the outer wall of the frame 2 along the conveying direction of the aluminum foil blank. After being unwound by the unwinder 1, the aluminum foil blank passes through the first guide roller 3. A first adjusting roller 41 is provided on the side wall of the frame 2 behind the first guide roller 3. After passing the first guide roller 3, the aluminum foil blank continues to be conveyed forward by the first adjusting roller 41. A slitting mechanism 5 is also provided on the frame 2. After passing the first adjusting roller 41, the aluminum foil blank is guided by the second guide roller 3 and then enters the slitting mechanism 5. The slitting mechanism 5 slits the aluminum foil blank into aluminum foils of different widths. The slit aluminum foil passes through the third guide roller 3 and enters the reeling mechanism 6. The reeling mechanism 6 then winds the slit aluminum foil into two upper and lower aluminum foil strips. The upper and lower aluminum foil strips are guided by the fourth and fifth guide rollers 3, respectively, before being reeled onto the upper reel 7 and lower reel 8. The reeling rollers of the upper and lower reels 7 and 8 are controlled by servo motors. A second regulating roller 42 is installed on the side wall of the frame 2 between the fourth guide roller 3 and the upper reel 7. The upper aluminum foil strip passes through the fourth guide roller 3 and is then transferred to the second regulating roller 42. A third regulating roller 43 is installed on the side wall of the frame 2 between the fifth guide roller 3 and the lower reel 8. The lower aluminum foil strip passes through the fifth guide roller 3 and is then transferred to the third regulating roller 43. The first regulating roller 41, the second regulating roller 42, and the third regulating roller 43 are all arranged horizontally to tension the aluminum foil strips.

[0019] The frame 2 is hollow. A first adjustment slot 21 is defined on the sidewall of the frame 2, opposite the first adjustment roller 41. The path of the first adjustment slot 21 is shaped like an upper left circular arc. A fixed shaft is coaxially fixed to the end of the first adjustment roller 41 near the frame 2. The other end of the fixed shaft passes through the first adjustment slot 21 and is coaxially fixedly connected to a driven pulley 282. A connecting rod 29 is fixedly mounted on the sidewall of the driven pulley 282. The other end of the connecting rod 29 is fixedly connected to the driving pulley 281. A lifting cylinder 25 is vertically fixed inside the frame 2. The end of the telescopic rod of the lifting cylinder 25 is horizontally fixedly connected to a mounting plate 26. A drive motor 27, a servo motor, is fixed to the top surface of the mounting plate 26. The output shaft of the drive motor 27 is coaxially fixedly connected to the driving pulley 281. The driving pulley 281 is located at the center of the arc of the first adjustment slot 21. The length of the connecting rod 29 is equal to the radius of the arc of the first adjustment slot 21. The driving motor 27 is turned on, and the driving motor 27 drives the driving wheel 281 to rotate. The rotation of the driving wheel 281 further drives the connecting rod 29 and the driven wheel 282 to rotate around the driving wheel 281, thereby driving the first adjusting roller 41 to move along the first adjusting slot 21.

[0020] Similarly, a second adjustment slot 22 and a third adjustment slot 23 are defined on the sidewall of the frame 2, opposite the second adjustment roller 42 and the third adjustment roller 43, respectively. The path of the second adjustment slot 22 is identical to that of the first adjustment slot 21, while the path of the third adjustment slot 23 is vertically symmetrical to that of the second adjustment slot 22. The second and third adjustment rollers 42 and 43 are driven by the same drive assembly as the first adjustment roller 41 and move along the second and third adjustment slots 22 and 23, respectively. Adjustment of the first, second, and third adjustment rollers 41, 42, and 43 adjusts the tension of the aluminum foil conveyor. Three first adjustment slots 21, two second adjustment slots 22, and three third adjustment slots 23 are each spaced vertically apart. One end of each of the three first adjustment slots 21 is connected by a movable slot 24 vertically defined in the sidewall of the frame 2. The vertical position of the driving wheel 281, and thus the position of the driven wheel 282 and the first adjusting roller 41, can be adjusted by the lifting cylinder 25 to accommodate the unwinding of three aluminum foil rolls with different initial roll diameters, ensuring tension balance. A movable slot 24 is also provided between the second and third adjusting slots 22 and 23 to similarly ensure tension balance during the rewinding of the aluminum foil roll.

[0021] The system also includes a control system. The servo motors of the unwinder 1, upper winder 7, and lower winder 8, as well as the drive motors 27 and lift cylinders 25, are all electrically connected to the control system. Tension sensors 9 are installed on the side walls of the frame 2, between the first adjustment roller 41 and the slitting mechanism 5, and between the slitting mechanism 5 and the second adjustment roller 42 and third adjustment roller 43. These tension sensors 9 are cantilever-type tension sensors. Each tension sensor 9 is also electrically connected to the control system. Three alarm lights 32 are installed on the side walls of the frame 2, one for each tension sensor 9, and the other is electrically connected to the control system. The tension on each side of the slitting mechanism 5 is measured using the tension sensors 9. When the values ​​of the three tension sensors 9 differ, the control system flashes the corresponding alarm light 32, thereby providing a detection alarm.

[0022] The operating principle of the above embodiment is as follows: when unwinding the aluminum foil blank, the speed of the unwinder 1 remains constant for a period of time at the beginning. As the diameter of the aluminum foil blank roll decreases, when the diameter of the aluminum foil blank roll shrinks to a certain value, the control system will control the servo motor of the unwinder 1 to increase the speed, making more turns per unit time and increasing the unwinding speed, thereby maintaining the tension. However, in the intermediate process before the speed of the servo motor of the unwinder 1 changes, the unwinding speed is also gradually decreasing. During this process, the control system controls the drive motor 27 corresponding to the first adjusting roller 41 to operate, causing the first adjusting roller 41 to move evenly and slowly along the first adjusting groove 21 toward the unwinder 1, thereby maintaining the dynamic balance of the tension on both sides of the first adjusting roller 41. When the servo motor of the unwinder 1 increases the speed, the first adjusting roller 41 just moves from one end of the first adjusting groove 21 to the other end, and immediately drives the drive motor 27 to reverse, causing the first adjusting roller 41 to return to its initial position. The unwinder 1 maintains the new speed and rotates in this cycle until the unwinding is completed. Similarly, the winding diameters of the upper winder 7 and the lower winder 8 will increase, and the control system will control the servo motors of the upper winder 7 and the lower winder 8 to reduce their speeds to maintain tension. Before the servo motors of the upper winder 7 and the lower winder 8 change speed, the control system controls the drive motors 27 corresponding to the second adjustment roller 42 and the third adjustment roller 43 to operate, causing the second adjustment roller 42 and the third adjustment roller 43 to move evenly and slowly along the second adjustment slot 22 and the third adjustment slot 23, respectively, away from the upper winder 7 and the lower winder 8, thereby maintaining dynamic balance between the tension on both sides of the second adjustment roller 42 and the tension on both sides of the third adjustment roller 43. In summary, this ensures that the tension of the aluminum foil strip is balanced throughout the entire aluminum foil slitting process.

[0023] Obviously, the above embodiments are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be practiced. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to enumerate all possible embodiments here. However, such obvious variations or modifications arising from the spirit of the present invention remain within the scope of protection of the present invention.

Claims

1. An aluminum foil slitting machine, comprising an unwinder (1), a plurality of guide rollers (3), a slitting mechanism (5) for slitting aluminum foil, an upper winder (7), a lower winder (8), a frame (2) for mounting various mechanical components, and a control system, characterized in that: A first adjusting roller (41) is provided on the side wall of the frame (2) at one end close to the unwinder (1), a first adjusting slot (21) is provided on the side wall of the frame (2) opposite to the first adjusting roller (41), the path of the first adjusting slot (21) is in the shape of an upper left circular arc, a first driving component for driving the first adjusting roller (41) to move along the first adjusting slot (21) is provided inside the frame (2), a second adjusting roller (42) is provided on the side wall of the frame (2) at one end close to the upper winder (7), a second adjusting slot (22) is provided on the side wall of the frame (2) opposite to the second adjusting roller (42), the path of the second adjusting slot (22) is the same as the path of the first adjusting slot (21), and the frame (2) is provided with a first adjusting roller (42). The frame (2) is provided with a second drive assembly for driving the second adjustment roller (42) to move along the second adjustment groove (22); a third adjustment roller (43) is provided on the side wall of one end of the frame (2) close to the lower winder (8); a third adjustment groove (23) is provided on the side wall of the frame (2) opposite to the third adjustment roller (43); the path of the third adjustment groove (23) is symmetrical with the path of the second adjustment groove (22) in the upper and lower directions; a third drive assembly for driving the third adjustment roller (43) to move along the third adjustment groove (23) is provided inside the frame (2); the first drive assembly, the second drive assembly and the third drive assembly have the same structure; the first drive assembly, the second drive assembly and the third drive assembly are all electrically connected to the control system; The first adjustment slot (21), the second adjustment slot (22) and the third adjustment slot (23) are each provided with a plurality of intervals therebetween, one end of each of the plurality of first adjustment slots (21) being connected via a movable slot (24) vertically provided on a side wall of the frame (2), and a movable slot (24) is also provided between each of the plurality of second adjustment slots (22) and the third adjustment slot (23); The first driving assembly includes a lifting cylinder (25) vertically fixed inside the frame (2), a mounting plate (26) is horizontally provided at the telescopic rod end of the lifting cylinder (25), a driving motor (27) is fixedly connected to the upper surface of the mounting plate (26), an output end of the driving motor (27) is coaxially fixedly connected to a driving wheel (281), a connecting rod (29) is fixedly connected to the side wall of the driving wheel (281) away from the driving motor (27), the other end of the connecting rod (29) is fixedly connected to a driven wheel (282), the driven wheel (282) is coaxially fixedly connected to a fixed shaft, and the other end of the fixed shaft passes through the first adjusting slot (21) and is coaxially fixedly connected to the first adjusting roller (41).

2. The aluminum foil slitting machine according to claim 1, characterized in that: The lifting cylinder (25) and the driving motor (27) are both electrically connected to the control system, and the connection method between the second driving assembly and the third driving assembly and the second adjusting roller (42) and the third adjusting roller (43) is similar to the connection method between the first driving assembly and the first adjusting roller (41).

3. The aluminum foil slitting machine according to claim 1, characterized in that: Tension sensors (9) are provided on the side wall of the frame (2) between the first adjusting roller (41) and the slitting mechanism (5), and between the slitting mechanism (5) and the second adjusting roller (42) and the third adjusting roller (43). Each of the tension sensors (9) is electrically connected to a control system. Three alarm lights (32) are provided on the side wall of the frame (2), each of the alarm lights (32) corresponds to a tension sensor (9), and the alarm lights (32) are electrically connected to the control system.

4. The aluminum foil slitting machine according to claim 2, characterized in that: The unwinder (1), the upper winder (7), the lower winder (8) and the drive motor (27) all adopt servo motors.

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