A winding pressure roller device applied to a multi-winding shaft slitting machine

Abstract

The utility model provides a kind of winding pressure roller device applied to multiple winding shaft slitting machine, including pressure roller assembly and winding assembly, pressure roller assembly includes rack, the pressure roller for improving the uniformity of tube core, the center of pressure roller is equipped with mandrel, the both ends of mandrel are connected buffer assembly respectively, buffer assembly is connected with swing arm assembly, swing arm assembly is connected with driving assembly;Winding assembly includes winding shaft, its axis is parallel with the axis of pressure roller, the both ends of winding shaft are rotatably connected on rack respectively.The winding pressure roller device applied to multiple winding shaft slitting machine provided by the utility model avoids the technical problems of tube core arching and wrinkling in the prior art, by improving the structural design and pressure regulating mechanism of pressure roller, the pressure of pressure roller can be self-adaptively controlled, and uniformly act on the surface of tube core, local stress concentration is eliminated, and the slitting requirement of different thickness and hardness materials is adapted, so as to improve the uniformity of slitting and winding, and reduce the product scrap rate.

Description

Technical Field

[0001] This utility model belongs to the field of slitting machine winding technology, specifically relating to a winding pressure roller device applied to a multi-winding slitting machine. Background Technology

[0002] In the field of advertising consumables production, slitting machines are key equipment for processing materials into rolls. In existing technologies, slitting machines, especially multi-roll slitting machines, commonly suffer from problems such as core arching and wrinkling when slitting and winding materials like PP paper and PET. Traditional slitting machines generally lack winding pressure rollers, relying solely on the active rotation of the winding shaft to drive the substrate. This fails to conform to the curved surface of the core paper tube and cannot dynamically adjust the pressure distribution according to material characteristics (different thicknesses and hardnesses) and winding tension. This results in uneven pressure on the core during winding, creating localized stress concentrations that ultimately cause core deformation and arching, severely impacting the product's appearance and performance. Industry statistics show that the scrap rate due to core problems in traditional slitting machines is as high as 15%-20%, not only wasting materials but also increasing production costs.

[0003] Therefore, this solution designs a slitting machine pressure roller device with a simple structure that can adaptively control the pressure of the pressure roller and apply it evenly to the surface of the tube core, in order to solve the industry problems of tube core arching and wrinkling in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a winding pressure roller device for multi-reel slitting machines, which solves the technical problems of tube core arching and wrinkling in the prior art. It has a simple structure and achieves uniform pressure on the surface of the tube core during winding by improving the structural design and pressure adjustment mechanism of the pressure roller device, eliminating local stress concentration, adapting to the slitting requirements of materials with different thicknesses and hardness, and making the tension control and pressure roller pressure well matched, thereby improving the neatness of slitting and winding and reducing the scrap rate of products.

[0005] A winding pressure roller device for a multi-spindle slitting machine includes a pressure roller assembly and a winding assembly. The multi-spindle slitting machine includes a frame, a pressure roller for improving the uniformity of the core tube, a mandrel passing through the center of the pressure roller, buffer assemblies connected to both ends of the mandrel, a swing arm assembly connected to a swing arm assembly, and a drive assembly connected to a drive assembly.

[0006] The winding assembly includes a winding shaft whose axis is parallel to the axis of the pressure roller, and both ends of the winding shaft are rotatably connected to the frame.

[0007] The take-up shaft and pressure roller have separate contact, which can be used to contact the material wound on the take-up shaft and apply pressure evenly. The take-up shaft is connected to a rotary power mechanism to drive the take-up shaft to rotate. The specific structure of the rotary power mechanism is existing technology and will not be described in detail.

[0008] The buffer assembly includes a screw that passes vertically through the end of the spindle, a baffle fixed to one end of the screw, and a spring sleeved on the screw. The spring is located between the baffle and the spindle, and the other end of the screw is connected to the swing arm assembly.

[0009] The swing arm assembly includes a lower swing arm with one end threadedly connected to the screw, a rotating shaft fixedly disposed at the other end of the lower swing arm, and an upper swing arm with one end fixedly connected to the rotating shaft. The other end of the upper swing arm is provided with a connecting shaft, which is connected to the drive assembly. The rotating shaft is rotatably connected to a mounting base, and the mounting base is fixed to the frame.

[0010] The drive assembly includes a cylinder, a piston rod disposed at one end of the cylinder, a nut disposed on the piston rod, and a cylinder mounting base rotatably connected to the bottom end of the cylinder, the cylinder mounting base being fixedly disposed on the frame.

[0011] A retaining sleeve is provided on the outer side of the mandrel.

[0012] The rotating shaft is mounted on the frame via a rolling bearing, the pressure roller is connected to the spindle via a rolling bearing, and a spherical bearing is mounted on the connecting shaft.

[0013] The outer surface of the pressure roller is covered with a flexible pad layer, which is made of rubber with a thickness of 5-10 mm and a Shore hardness of 60±5HA.

[0014] The spring is a variable stiffness helical spring with an adjustable initial pressure range of 50-200N.

[0015] The technical features not described in detail in this solution are based on the conventional understanding and operation of those skilled in the art, and are reasonably inferred from mechanical common sense. The principle is to solve the technical problems in this solution, such as product model, size, bearing, bolt connection, spring elasticity coefficient, etc., which will not be described in detail here.

[0016] Finally, it should be noted that other components of the slitting machine are not innovative features of this solution and can all utilize existing technologies.

[0017] This utility model achieves the following significant effects:

[0018] (1) This solution uses a cylinder to press and reset the pressure roller, and uses a spring to achieve adaptive pressure adjustment. It can dynamically adjust the pressure distribution according to the material properties and winding tension, so that the pressure is applied evenly to the tube core surface. It effectively solves the technical problem of tube core wrinkling and arching during the slitting process of multi-axis slitting machine. It has a simple structure, strong adaptability, significantly improves product quality and reduces production costs.

[0019] (2) Arching elimination rate ≥95%: The dynamic adjustment of the spring makes the pressure on the core surface uniform; the scrap rate is reduced to less than 5%; the flexible pad absorbs local stress; the adaptability is improved; it can handle materials with a thickness of 0.1-1mm and a hardness of 60-90HA; cost saving; annual material loss is reduced by more than 30%. Attached Figure Description

[0020] Figure 1 This is a front view of the winding pressure roller device in this utility model.

[0021] Figure 2 This is a side view of the winding pressure roller device in this utility model.

[0022] Figure 3 This is a schematic diagram of the connection structure of the spring, screw and pressure roller in this utility model.

[0023] The attached figures are labeled as follows: 1. Pressure roller assembly; 2. Fixed seat; 3. Rolling bearing one; 5. Lower swing arm; 6. Mandrel; 7. Spring; 8. Screw; 9. Pressure roller; 91. Rewinding shaft; 10. Fixed sleeve; 11. Upper swing arm; 12. Cylinder; 13. Piston rod; 14. Nut; 15. Mounting seat; 16. Spherical bearing; 17. Connecting shaft; 18. Cylinder fixed seat; 20. Rotating shaft; 21. Rolling bearing two. Detailed Implementation

[0024] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0025] See Figures 1-3 A winding pressure roller device for a multi-reel slitting machine includes a pressure roller assembly 1 and a winding assembly. The pressure roller assembly 1 includes a frame, a pressure roller 9 for improving the uniformity of the core tube, a core shaft 6 passing through the center of the pressure roller 9, buffer assemblies connected to both ends of the core shaft 6, a swing arm assembly connected to the buffer assembly, and a drive assembly connected to the swing arm assembly.

[0026] The winding assembly includes a winding shaft 91, whose axis is parallel to the axis of the pressure roller 9. Both ends of the winding shaft 91 are rotatably connected to the frame. The winding shaft 91 is connected to a rotary power mechanism for driving the winding shaft 91 to rotate. The specific structure of the rotary power mechanism is prior art and is not shown in detail in the accompanying drawings for the sake of simplifying the design.

[0027] Used to contact and apply pressure to the material wound on the take-up shaft 91.

[0028] The buffer assembly includes a screw 8 that passes vertically through the end of the spindle 6, a baffle fixed to one end of the screw 8, and a spring 7 sleeved on the screw 8. The spring 7 is located between the baffle and the spindle 6, and the other end of the screw 8 is connected to the swing arm assembly.

[0029] The spring 7 is compressed / extended under the guidance of the screw 8 to compensate for pressure fluctuations in real time, so as to ensure that the pressure roller 9 moves smoothly along the direction of the screw 8 during the pressure application process and improve the stability of pressure regulation; it can adaptively adjust the pressure of the pressure roller 9 on the material according to the material characteristics and the tension changes during the winding process, so that the pressure is applied evenly to the core surface.

[0030] The swing arm assembly includes a lower swing arm 5 with one end threadedly connected to a screw 8, a rotating shaft 20 fixedly disposed at the other end of the lower swing arm 5, an upper swing arm 11 with one end fixedly connected to the rotating shaft 20, and a connecting shaft 17 disposed at the other end of the upper swing arm 11. The connecting shaft 17 is connected to the drive assembly, and the rotating shaft 20 is rotatably connected to the mounting base 15, which is fixed to the frame.

[0031] The drive assembly includes a cylinder 12, a piston rod 13 disposed at one end of the cylinder 12, a nut 14 disposed on the piston rod 13, and a cylinder mounting base 18 rotatably connected to the bottom end of the cylinder 12. The cylinder mounting base 18 is fixedly disposed on the frame.

[0032] When the winding shaft 91 starts working, the cylinder 12 drives the pressure roller 9 to move downward, so that the pressure roller 9 presses against the material to be cut. When the winding work ends, the cylinder 12 drives the pressure roller 9 to reset.

[0033] A retaining sleeve 10 is provided on the outer side of the mandrel 6.

[0034] The rotating shaft 20 is mounted on the frame via rolling bearing 3, the pressure roller 9 is connected to the spindle 6 via rolling bearing 21, and a spherical bearing 16 is mounted on the connecting shaft 17.

[0035] The outer surface of pressure roller 9 is covered with a flexible pad, which is made of rubber, 5-10mm thick, with a Shore hardness of 60±5HA. The flexible pad can better conform to the curved surface of the core paper tube, further improving the uniformity of pressure distribution.

[0036] Spring 7 is a variable stiffness helical spring 7, with an initial pressure adjustable range of 50-200N.

[0037] This solution, with its textual description and accompanying illustrations, provides a clear and concise explanation of the technical solution.

[0038] Even better, this solution also includes a PLC controller to control the power system and ensure the smooth operation of the winding pressure roller.

[0039] The specific working process of this utility model is as follows:

[0040] In this design, the pressure roller 9 is defined as having a diameter of 200mm and a length of 1500mm; the spring 7 is made of 60Si2MnA steel with a stiffness coefficient of 80N / mm; the cylinder 12 has a stroke of 300mm and an output pressure of 0.5MPa; and the screw 8 has a diameter of 20mm and is chrome-plated.

[0041] During operation, the pressure roller assembly 1 is started, and the cylinder 12 pushes the pressure roller 9 to press the material; the winding shaft 91 winds the material at a speed of 30m / min, and the spring 7 extends and retracts ±15mm according to the material tension; after winding is completed, the cylinder 12 retracts, and the pressure roller 9 disengages from the tube core.

[0042] The working principle of this solution is as follows:

[0043] When the take-up shaft 91 performs the take-up operation, the cylinder 12 actuates, pushing the pressure roller 9 downwards via the swing arm assembly, causing the pressure roller 9 to press against the material wound on the take-up shaft 91. During the take-up process, as the material winds, the pressure on the core surface changes due to variations in material thickness, hardness, and tension. The spring 7 adaptively compresses or extends according to these pressure changes, adjusting the pressure of the pressure roller 9 on the material to ensure even application to the core surface and eliminate localized stress concentration. After take-up is complete, the cylinder 12 drives the pressure roller 9 to reset, preparing for the next slitting and take-up operation.

[0044] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A winding pressure roller device for a multi-reel slitting machine, comprising a pressure roller assembly (1) and a winding assembly, characterized in that, The pressure roller assembly (1) includes a frame and a pressure roller (9) for improving the uniformity of the core tube. A mandrel (6) is inserted through the center of the pressure roller (9). Both ends of the mandrel (6) are connected to a buffer assembly. The buffer assembly is connected to a swing arm assembly, and the swing arm assembly is connected to a drive assembly. The winding assembly includes a winding shaft (91) whose axis is parallel to the axis of the pressure roller (9), and the two ends of the winding shaft (91) are rotatably connected to the frame.

2. The winding pressure roller device for a multi-reel slitting machine according to claim 1, characterized in that, The buffer assembly includes a screw (8) that passes vertically through the end of the spindle (6), a baffle fixed to one end of the screw (8), and a spring (7) sleeved on the screw (8). The spring (7) is located between the baffle and the spindle (6), and the other end of the screw (8) is connected to the swing arm assembly.

3. The winding pressure roller device for a multi-reel slitting machine according to claim 2, characterized in that, The swing arm assembly includes a lower swing arm (5) with one end threadedly connected to the screw (8), a rotating shaft (20) fixedly disposed at the other end of the lower swing arm (5), and an upper swing arm (11) with one end fixedly connected to the rotating shaft (20). The other end of the upper swing arm (11) is provided with a connecting shaft (17), which is connected to the drive assembly. The rotating shaft (20) is rotatably connected to the mounting base (15), which is fixed to the frame.

4. A winding pressure roller device for a multi-reel slitting machine according to claim 3, characterized in that, The drive assembly includes a cylinder (12), a piston rod (13) disposed at one end of the cylinder (12), a nut (14) disposed on the piston rod (13), and a cylinder mounting base (18) rotatably connected to the bottom end of the cylinder (12). The cylinder mounting base (18) is fixedly disposed on the frame.

5. A winding pressure roller device for a multi-reel slitting machine according to claim 2, characterized in that, A fixing sleeve (10) is provided on the outside of the mandrel (6).

6. A winding pressure roller device for a multi-reel slitting machine according to claim 3, characterized in that, The rotating shaft (20) is mounted on the frame via a rolling bearing (3), the pressure roller (9) is connected to the spindle (6) via a rolling bearing (21), and a spherical bearing (16) is mounted on the connecting shaft (17).

7. A winding pressure roller device for a multi-reel slitting machine according to claim 1, characterized in that, The outer surface of the pressure roller (9) is covered with a flexible pad layer, which is made of rubber with a thickness of 5-10 mm and a Shore hardness of 60±5HA.

8. A winding pressure roller device for a multi-reel slitting machine according to claim 2, characterized in that, The spring (7) is a variable stiffness helical spring (7), and the initial pressure is adjustable in the range of 50-200N.

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