A small slitting and rewinding machine

Abstract

The utility model relates to a kind of small slitting rewinder, including rack, and the rack is equipped with unwinding support belt device, slitting device, rewinding device and control device, and the unwinding support belt device includes unwinding shaft, bearing bracket and the first driving member of driving bearing bracket swing, and the bearing bracket is located below unwinding shaft, and the slitting device includes tool rest shaft and the cutter slidingly disposed on tool rest shaft, and the rewinding device includes two first embossing roller and second embossing roller and the driving assembly of driving embossing roller rotation, and form the material passage between two embossing rollers, and the rack is further equipped with magnetic powder device, and the magnetic powder device includes magnetic powder brake, rotating shaft and the driving gear set on rotating shaft, and the rotating shaft is equipped on magnetic powder brake, and the bearing bracket is equipped with driving shaft, driving wheel on driving shaft, driven shaft, driven wheel on driven shaft and conveying belt, and the conveying belt is sleeved on driving wheel and driven wheel outer, and the driving shaft is equipped with driving gear with synchronous rotation, and driving gear rotates under the drive of driving gear.Using the above technical scheme, the utility model provides a kind of small slitting rewinder, overall structure is simple, and cost is low, and material conveying can be adjusted suitable tension according to the different thickness of material using magnetic powder device.

Description

Technical Field

[0001] This utility model relates to the field of slitting device technology, and in particular to a small slitting and rewinding machine. Background Technology

[0002] Slitting and rewinding machines are mainly used to slit wide materials (such as paper, PP spunbond nonwoven fabric, packaging material rolls, etc.) into smaller rolls according to the required width, and rewind them into smaller rolls to meet different production and usage needs.

[0003] The applicant previously filed a Chinese utility model patent with authorization publication number CN223342025U, which discloses a high-speed slitting machine, including a frame, an unwinding device, a cutting device, a winding device, and a slitting and unloading table. The cutting device and the winding device are located between the unwinding device and the slitting and unloading table. The unwinding device includes an unwinding shaft for carrying the material to be slid, the cutting device includes a mounting base and a cutting blade slidably mounted on the mounting base, and the winding device includes a winding shaft for winding the slidable material. The frame also includes a bracket device and a tensioning device. The device includes a support frame located below the unwinding shaft. The support frame includes a support frame, a first drive member connected to the support frame, a conveying assembly on the support frame, and a second drive member that drives the conveying assembly. The support frame is raised or lowered under the action of the first drive member to change the distance between the support frame and the unwinding shaft. The tensioning device includes a swing frame, a tensioning shaft on the swing frame, and a third drive member that drives the swing frame to swing. The third drive member is located on the frame, and its output shaft is connected to the swing frame to drive the swing frame to swing back and forth on the frame, thereby adjusting the height of the tensioning roller.

[0004] The aforementioned slitting machine has a relatively complex overall structure, making it unsuitable for buyers with limited budgets. Furthermore, it uses a motor to convey materials, making precise tension adjustment impossible, and it generates significant noise during conveying. Additionally, the rewinding and slitting of materials uses a shaft-type rewinding method, resulting in cumbersome overall operation and long downtime. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art by providing a small slitting and rewinding machine with a simple overall structure, low cost, and the use of a magnetic powder device for material conveying, which can adjust the appropriate tension according to the different thicknesses of the material.

[0006] The technical solution of this utility model is as follows: A small slitting and rewinding machine includes a frame, on which are provided an unwinding support device, a slitting device, a rewinding device, and a control device. The unwinding support device includes an unwinding shaft, a support frame, and a first driving component for driving the support frame to swing. The support frame is located below the unwinding shaft. The slitting device includes a blade holder shaft and a cutter slidably mounted on the blade holder shaft. The rewinding device includes two opposing first and second embossing rollers and a driving component for driving the embossing rollers to rotate. A material passage is formed between the two embossing rollers. The frame is also provided with a magnetic powder device, which includes a magnetic powder brake, a rotating shaft, and a drive gear mounted on the rotating shaft. The rotating shaft is mounted on the magnetic powder brake. The support frame is provided with a drive shaft, a drive wheel mounted on the drive shaft, a driven shaft, a driven wheel mounted on the driven shaft, and a conveyor belt. The conveyor belt is sleeved around the drive wheel and the driven wheel. The drive shaft is provided with a driven gear that rotates synchronously with it, and the driven gear rotates under the drive of the drive gear.

[0007] Using the above technical solution, the raw material to be slit is installed on the unwinding shaft to ensure smooth unwinding of the roll. The support frame swings under the action of the first drive component, supporting the raw material. According to the required slitting width and rewinding diameter, the cutter and limiting mandrel are installed and adjusted. The end of the raw material is introduced into the slitting device and then wound onto the paper tube after passing through the material passage. The magnetic powder brake can precisely control the tension by adjusting the magnetic field strength, realizing tension regulation. It can react quickly when the material tension changes, avoiding excessive relaxation or stretching of the material. Moreover, there is no contact friction during operation, so it will not generate friction loss and heat like traditional motors, which helps to extend the service life of the equipment. It has low noise, no motor vibration and noise during operation, and a quieter working environment, suitable for long-term operation. During operation, when the tension exceeds the set range, the magnetic powder brake will automatically adjust to avoid overload of the equipment, protect the machine and materials, and the structure is simpler than the existing technology without affecting its use.

[0008] A further feature of this invention is that a pressing device is provided on the frame above the rewinding device. The pressing device includes a pressing roller, mounting plates at both ends of the pressing roller, and a second driving component that drives the mounting plates to rise and fall. The two ends of the pressing roller are mounted on the mounting plates, and the pressing roller is located above the material passage. The rewinding device also includes two limiting mandrels located in the material passage and parallel to the embossing roller. The pressing roller is pressed onto the limiting mandrels under the action of the second driving component, and the ends of the limiting mandrels abut against the mounting plates.

[0009] With the above-mentioned further configuration, the limiting mandrel is located at both ends of the paper tube, and the end can be partially located inside the paper tube. Driven by the embossing roller, the paper tube and the limiting mandrel rotate synchronously. The slit material is rewound onto the paper tube, and the pressure roller moves down and presses onto the limiting mandrel. The end of the limiting mandrel presses against the mounting plate to prevent the paper tube from shifting during rotation and affecting rewinding.

[0010] A further feature of this invention is that the frame is also provided with a clamping device, which includes clamping members at both ends of the unwinding shaft and a third driving member for driving the clamping members to swing. The frame is provided with a card plate at both ends of the unwinding shaft, and both card plates are provided with a slot for placing the unwinding shaft. The clamping member is hinged to the card plate and cooperates with the slot under the action of the third driving member to realize the clamping or loosening of the unwinding shaft.

[0011] With the above-mentioned further configuration, the end of the unwinding shaft containing the material is placed in the slot, and then the third drive unit drives the clamping member to swing. The upper end of the clamping member moves towards the slot and presses against the unwinding shaft, so that the structure is stable when the material is conveyed and will not fall off the frame. When replacement is needed, the upper end of the clamping member swings in the opposite direction and the unwinding shaft can be dislodged.

[0012] A further feature of this invention is that the pressing device also includes a guide rail and a guide block. The guide block is mounted on the mounting plate, and the guide rail is vertically mounted on the frame. The guide block and the guide rail slide together in a guiding manner.

[0013] With the above-mentioned further configuration, the guide rail and guide block slide together, so that the structure is stable and does not deviate when the pressure roller is raised and lowered.

[0014] A further feature of this invention is that the frame is also provided with a limiting block, which is located at the lower end of the guide rail to prevent the guide block from disengaging from the guide rail.

[0015] The above-mentioned further settings can serve as a limit to prevent the mounting plate from sliding down to its lowest position and detaching from the frame.

[0016] A further feature of this invention is that a conveying roller is provided on the frame below the two embossing rollers, forming a material conveying channel between the conveying rollers. The cutting device is located below the first embossing roller and behind the conveying roller to cut the material in the conveying channel.

[0017] The above-mentioned further configuration can guide and tension the material. The material comes out of the unwinding roller, passes under each conveyor roller, is cut by the cutter, enters the material passage, and is rewound onto the limiting mandrel. The cutter is located behind the conveyor roller and is in contact with the conveyor roller. The cutting is carried out during the conveying process, which is convenient and quick to operate and has a good cutting effect.

[0018] A further feature of this invention is that the frame is also provided with a tension roller, which is located between the unwinding shaft and the second embossing roller.

[0019] By adopting the above-mentioned further settings, the material can be tensioned to prevent it from piling up during the conveying process and to facilitate subsequent rewinding.

[0020] A further feature of this invention is that a slitting table is provided on the frame behind the active embossing roller.

[0021] With the above-mentioned further settings, the limiting mandrel containing the rewound and slit material is moved from the material feeding channel to the slitting table, and then the material on the limiting mandrel is separated from the subsequent material by the cross-cutting of the cutting tool, and then the material is fed in sequence for easy packaging.

[0022] A further feature of this invention is that the driving assembly includes a motor, a driving sprocket, a driven sprocket, and a chain. The driving sprocket is located on the output shaft of the motor, and the driven sprocket is located at the ends of the two embossing rollers. The chain meshes with the driving sprocket and the driven sprocket to drive the embossing rollers to rotate when the motor is working.

[0023] With the above-mentioned further settings, the drive structure is simple, easy to operate, and has good stability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model; Figure 2 This is a schematic diagram of the support frame and magnetic powder device according to a specific embodiment of the present utility model; Figure 3 This is a schematic diagram of the magnetic powder device and the drive shaft according to a specific embodiment of the present invention; Figure 4 This is a side view of a specific embodiment of the present utility model; Figure 5 This is a schematic diagram of the interior of the frame in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the clamping device and the unwinding shaft in a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the pressing device according to a specific embodiment of the present invention; Figure 8 This is a schematic diagram of the mounting plate and guide block in a specific embodiment of the present utility model; Figure 9 This is a schematic diagram of the driving component according to a specific embodiment of the present utility model; Figure 10 This is a schematic diagram of the slitting table according to a specific embodiment of the present invention.

[0025] In the diagram, 1. Frame; 11. Pallet; 111. Pallet slot; 12. Limiting block; 13. Rack; 14. Conveyor roller; 15. Tension roller; 16. Slitting table; 2. Unwinding device; 21. Unwinding shaft; 22. Support frame; 221. Drive shaft; 222. Drive wheel; 223. Driven shaft; 224. Driven wheel; 225. Conveyor belt; 23. First driving component; 3. Slitting device; 31. Knife holder shaft; 32. Cutter; 4. Rewinding device; 41. First embossing roller ; 42. Second embossing roller; 431. Motor; 432. Drive sprocket; 433. Driven sprocket; 434. Chain; 44. Limiting mandrel; 5. Control device; 6. Magnetic powder device; 61. Magnetic powder brake; 62. Drive gear; 7. Pressing device; 71. Pressing roller; 72. Mounting plate; 73. Second drive component; 74. Guide rail; 75. Guide block; 76. Lifting synchronous shaft; 77. Gear; 8. Clamping device; 81. Clamping component; 82. Third drive component. Detailed Implementation

[0026] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that all directional indicators (such as up, down, forward, backward, etc.) in the description of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] like Figure 1-10As shown, a small slitting and rewinding machine includes a frame 1, on which an unwinding support device, a slitting device 3, a rewinding device 4, and a control device 5 are mounted. The control device 5 includes a controller and several control buttons for controlling the operation of various driving components, motors 431, and magnetic powder brakes 61. The unwinding support device includes an unwinding shaft 21, a support frame 22, and a first driving component 23 that drives the support frame 22 to swing. Each driving component of this invention can be a cylinder, or it can be an electric cylinder or motor 431, etc. The support frame 22 is located below the unwinding shaft 21. The slitting device 3 includes a blade holder shaft 31 and a cutter slidably mounted on the blade holder shaft 31. 32. The position of the cutter 32 on the cutter holder shaft 31 can be adjusted according to the cutting width, and the number of cutters 32 can be increased or decreased. The rewinding device 4 includes two oppositely arranged first embossing rollers and second embossing rollers, and a drive assembly for driving the embossing rollers to rotate. The drive assembly includes a motor 431, a drive sprocket 432, a driven sprocket 433, and a chain 434. The drive sprocket 432 is located on the output shaft of the motor 431, and the driven sprocket 433 is located at the ends of the two embossing rollers. The chain 434 meshes with the drive sprocket 432 and the driven sprocket 433 to drive the embossing rollers to rotate when the motor 431 is working. The drive structure is simple, easy to operate, and has good stability.A material passage is formed between the two embossing rollers. The frame 1 is also equipped with a magnetic powder device 6, which includes a magnetic powder brake 61, a rotating shaft, and a drive gear 62 mounted on the rotating shaft. The rotating shaft is mounted on the magnetic powder brake 61. The support frame 22 is equipped with a drive shaft 221, a drive wheel 222 mounted on the drive shaft 221, a driven shaft 223, a driven wheel 224 mounted on the driven shaft 223, and a conveyor belt 225. The conveyor belt 225 is fitted over the drive wheel 222 and the driven wheel 224. The drive shaft 221 is equipped with a driven gear 77 that rotates synchronously with it. The driven gear 77 rotates under the drive of the drive gear 62. The drive gear 62 and the driven gear 77 can also be equipped with sprockets and are transmitted via a chain 434. The raw material to be cut is mounted on the unwinding shaft 21 to ensure smooth unwinding of the roll material. The support frame 22 is activated by the first drive member 23. Using a downward swing mechanism, the material is supported below the cutting device 3. Based on the required slitting width and rewinding diameter, the cutter 32 and the limiting mandrel 44 are installed and adjusted. The end of the raw material is introduced into the slitting device 3 and, after passing through the material passage, is wound onto the paper tube. The magnetic powder brake 61 can precisely control the tension by adjusting the magnetic field strength, achieving tension regulation. It can react quickly when the material tension changes, avoiding excessive relaxation or stretching of the material. Furthermore, there is no contact friction during operation, so it does not generate friction loss and heat like a traditional motor 431, helping to extend the equipment's service life. It operates with low noise, without the vibration and noise of a motor 431, creating a quieter working environment suitable for long-term operation. During operation, when the tension exceeds the set range, the magnetic powder brake 61 automatically adjusts to prevent overload, protecting the machine and materials. Its structure is simpler than existing technologies without affecting its use.

[0031] A pressing device 7 is provided on the frame 1 above the rewinding device 4. The pressing device 7 includes a pressing roller 71, mounting plates 72 located at both ends of the pressing roller 71, and a second driving member 73 that drives the mounting plates 72 to rise and fall. The pressing roller 71 is mounted on the mounting plates 72 at both ends and is located above the material feeding channel. The rewinding device 4 also includes two limiting mandrels 44 located in the material feeding channel and parallel to the embossing roller. The pressing roller 71 is pressed onto the limiting mandrels 44 under the action of the second driving member 73. The ends of the limiting mandrels 44 abut against the mounting plates 72 and are located at both ends of the paper tube. The end of the paper tube can be partially located inside the paper tube. Driven by the embossing roller, the paper tube and the limiting mandrel 44 rotate synchronously. The slit material is rewound onto the paper tube. The pressure roller 71 moves down and presses against the limiting mandrel 44. The end of the limiting mandrel 44 presses against the mounting plate 72 to prevent the paper tube from shifting during rotation and affecting rewinding. The pressure device 7 also includes a guide rail 74 and a guide block 75. The guide block 75 is set on the mounting plate 72, and the guide rail 74 is vertically set on the frame 1. The guide block 75 and the guide rail 74 slide and cooperate in a guide manner, so that the structure is stable and does not shift when the pressure roller 71 rises and falls. The frame 1 is also provided with a limiting block 12, which is located at the lower end of the guide rail 74 to restrict the guide block 75 from disengaging from the guide rail 74. This can serve as a limiting function to prevent the mounting plate 72 from sliding down to the lowest position and disengaging from the frame 1. The frame 1 is provided with a rack 13 along its vertical direction, and a lifting synchronous shaft 76 is connected between the two mounting plates 72. The lifting synchronous shaft 76 has gears 77 at both ends that mesh with the rack 13.

[0032] The frame 1 is also equipped with a clamping device 8, which includes clamping members 81 at both ends of the unwinding shaft 21 and a third driving member 82 for driving the clamping members 81 to swing. The frame 1 is equipped with a clamping plate 11 at both ends of the unwinding shaft 21. Both clamping plates 11 are provided with slots 111 for placing the unwinding shaft 21. The clamping member 81 is hinged to the clamping plate 11 and cooperates with the slots 111 under the action of the third driving member 82 to clamp or release the unwinding shaft 21. The end of the unwinding shaft 21 containing material is placed in the slot 111. Then the third driving member 82 drives the clamping member 81 to swing. The upper end of the clamping member 81 moves towards the slot 111 and presses against the unwinding shaft 21, so that the structure is stable when the material is conveyed and will not fall off the frame 1. When it needs to be replaced, the upper end of the clamping member 81 swings in the opposite direction and the unwinding shaft 21 can be detached.

[0033] A conveyor roller 14 is located below the two embossing rollers on the frame 1, forming a material conveying channel between the conveyor rollers 14. The cutter 32 is located below the first embossing roller and behind the conveyor roller 14 to cut the material in the conveying channel. It can guide and tension the material. The material comes out of the unwinding roller, passes under the conveyor rollers 14, is cut by the cutter 32, enters the material passage, and is rewound onto the limiting mandrel 44. The cutter 32 is located behind the conveyor roller 14 and is in contact with the conveyor roller 14. Cutting is performed during the conveying process, which is convenient and quick to operate and has a good cutting effect. The frame 1 is also equipped with a tension roller 15, which is located between the unwinding shaft 21 and the second embossing roller. It can tension the material to prevent it from accumulating during the conveying process and facilitate subsequent rewinding.

[0034] The frame 1 is equipped with a slitting table 16 located behind the active embossing roller. The rewound material is moved from the material feeding channel to the slitting table 16, and then the material on the paper tube is separated from the subsequent material by the cross-cutting tool. The limiting mandrel 44 is then removed from the paper tube for feeding, and the next paper tube is fed again. The paper tube is placed on the slitting table 16, and the limiting mandrel 44 is placed at both ends of the paper tube. Double-sided tape is applied to the paper tube, and the material is wound onto the paper tube. The paper tube and the limiting mandrel 44 are then placed into the material feeding channel, and the end of the limiting mandrel 44 abuts against the mounting plate 72. The pressure roller 71 descends and abuts against the paper tube, and the next rewinding continues.

Claims

1. A small slitting and rewinding machine, comprising a frame (1), wherein the frame (1) is provided with an unwinding support device, a slitting device (3), a rewinding device (4), and a control device (5), wherein the unwinding support device comprises an unwinding shaft (21), a support frame (22), and a first driving member (23) for driving the support frame (22) to swing, the support frame (22) being located below the unwinding shaft (21), the slitting device (3) comprising a blade holder shaft (31) and a cutter (32) slidably disposed on the blade holder shaft (31), and the rewinding device (4) comprising two opposing first embossing rollers and second embossing rollers, and a driving assembly for driving the embossing rollers to rotate, wherein a material passage is formed between the two embossing rollers, characterized in that, The frame (1) is also provided with a magnetic powder device (6), which includes a magnetic powder brake (61), a rotating shaft and a drive gear (62) on the rotating shaft. The rotating shaft is on the magnetic powder brake (61). The support frame (22) is provided with a drive shaft (221), a drive wheel (222) on the drive shaft (221), a driven shaft (223), a driven wheel (224) on the driven shaft (223), and a conveyor belt (225). The conveyor belt (225) is sleeved on the drive wheel (222) and the driven wheel (224). The drive shaft (221) is provided with a driven gear (77) that rotates synchronously with it. The driven gear (77) rotates under the drive of the drive gear (62).

2. The small slitting and rewinding machine according to claim 1, characterized in that, The frame (1) is provided with a pressing device (7) above the rewinding device (4). The pressing device (7) includes a pressing roller (71), mounting plates (72) located at both ends of the pressing roller (71), and a second driving member (73) that drives the mounting plates (72) to rise and fall. The pressing roller (71) is located on the mounting plates (72) at both ends. The pressing roller (71) is located above the material passage. The rewinding device (4) also includes two limiting mandrels (44). The two limiting mandrels (44) are located in the material passage and are parallel to the embossing roller. The pressing roller (71) is pressed onto the limiting mandrels (44) under the action of the second driving member (73). The end of the limiting mandrel (44) presses against the mounting plate (72).

3. The small slitting and rewinding machine according to claim 1 or 2, characterized in that, The frame (1) is also provided with a clamping device (8). The clamping device (8) includes clamping members (81) at both ends of the unwinding shaft (21) and a third driving member (82) for driving the clamping members (81) to swing. The frame (1) is provided with a card plate (11) at both ends of the unwinding shaft (21). Both card plates (11) are provided with a slot (111) for placing the unwinding shaft (21). The clamping member (81) is hinged to the card plate (11) and cooperates with the slot (111) under the action of the third driving member (82) to realize the clamping or loosening of the unwinding shaft (21).

4. The small slitting and rewinding machine according to claim 2, characterized in that, The pressing device (7) also includes a guide rail (74) and a guide block (75). The guide block (75) is mounted on the mounting plate (72), and the guide rail (74) is vertically mounted on the frame (1). The guide block (75) and the guide rail (74) slide together in a guiding manner.

5. The small slitting and rewinding machine according to claim 4, characterized in that, The frame (1) is also provided with a limiting block (12), which is located at the lower end of the guide rail (74) to restrict the guide block (75) from leaving the guide rail (74).

6. The small slitting and rewinding machine according to claim 2 or 4, characterized in that, The frame (1) is provided with a rack (13) along its vertical direction, and a lifting synchronous shaft (76) is connected between the two mounting plates (72). The lifting synchronous shaft (76) is provided with gears (77) at both ends that mesh with the rack (13).

7. The small slitting and rewinding machine according to claim 1 or 2, characterized in that, A conveyor roller (14) is provided on the frame (1) below the two embossing rollers, and a material conveying channel is formed between each conveyor roller (14). The cutter (32) device is located below the first embossing roller and behind the conveyor roller (14) to cut the material in the conveying channel.

8. The small slitting and rewinding machine according to claim 1 or 2, characterized in that, The frame (1) is also provided with a tension roller (15), which is located between the unwinding shaft (21) and the second embossing roller.

9. The small slitting and rewinding machine according to claim 1 or 2, characterized in that, A slitting table (16) is provided on the frame (1) behind the active embossing roller.

10. The small slitting and rewinding machine according to claim 1 or 2, characterized in that, The drive assembly includes a motor (431), a drive sprocket (432), a driven sprocket (433), and a chain (434). The drive sprocket (432) is located on the output shaft of the motor (431), and the driven sprocket (433) is located at the ends of the two embossing rollers. The chain (434) meshes with the drive sprocket (432) and the driven sprocket (433) to drive the embossing rollers to rotate when the motor (431) is working.

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