A packing rewinding machine with tension adjusting function for paper roll production

Abstract

The utility model discloses a kind of packing rewinder with tension adjusting function for paper roll production, comprising: expansion shaft is rotatably installed on rewinder rack by bearing, the outer side of the expansion shaft is equipped with the winding drum for winding paper roll, the utility model is connected with rotating cylinder by friction force by friction connecting component to expansion shaft, then winding motor is driven to driving synchronous pulley by rated high speed, then rotating cylinder is synchronously driven by driven synchronous pulley and synchronous belt, then according to the data of speed sensor and pressure sensor feedback, the position of arc friction plate is adjusted in real time by electric push rod, realize the adjustment of arc friction plate to friction ring pressure, for control the friction force change between arc friction plate and friction ring, expansion shaft is driven using friction force, realize expansion shaft variable speed to winding paper and be wound, since not directly acting on winding paper, the damage to winding paper is small, simultaneously can make the tension of winding paper keep uniform.

Description

Technical Field

[0001] This utility model relates to the field of tension winding technology, specifically a packing and rewinding machine for paper roll production with tension adjustment function. Background Technology

[0002] The unwinding and rewinding shafts on a rewinder are usually driven by a motor. However, the paper itself has a certain tension, or different tensions need to be applied to the rewinding end during use. Therefore, a tension adjustment structure needs to be installed on the rewinder to control the tension of the paper during rewinding.

[0003] Traditional rewinding machines use tension adjustment mechanisms that act on the paper. Because the paper has a certain tension, the tension adjustment components need to be continuously adjusted to ensure that the tension of the paper roll at the winding end remains consistent. However, traditional tension adjustment mechanisms act directly on the paper roll, which can easily damage the paper. At the same time, the tension control accuracy is poor, resulting in uneven tension during paper roll winding. Utility Model Content

[0004] The purpose of this invention is to provide a packaging and rewinding machine for paper roll production with tension adjustment function. A winding motor drives a rotating drum via a drive synchronous pulley, a driven synchronous pulley, and a synchronous belt. A friction connection assembly then drives the expansion shaft to rotate using sliding friction. The high speed of the winding motor converts static friction into dynamic friction in the friction connection assembly. Simultaneously, the pressure of the friction ring is adjusted by an arc-shaped friction plate, thereby adjusting the speed of the expansion shaft. This adapts to the tension winding of the paper roll in the rewinding machine. This device causes less damage to the paper roll and provides more uniform tension control, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a packing and rewinding machine for paper roll production with tension adjustment function, comprising:

[0006] An expansion shaft is rotatably mounted on the frame of a rewinder via bearings, and a winding drum for winding the paper roll is mounted on the outside of the expansion shaft.

[0007] A winding motor is fixed on the frame of the rewinding machine. A drive synchronous pulley is fixed on the output shaft of the winding motor. A driven synchronous pulley is movably mounted on the outer side of one end of the expansion shaft. The driven synchronous pulley is connected to the outer side of the drive synchronous pulley via a synchronous belt drive. A rotating drum, which is sleeved on the outer side of the expansion shaft and coaxial with the expansion shaft, is mounted on the outer side of the rewinding machine frame via a bearing seat. The driven synchronous pulley is fixed on the outer side of the rotating drum. A fixed seat is mounted on the end of the expansion shaft. A friction connection assembly is provided between the fixed seat and the rotating drum.

[0008] Preferably, the friction connection assembly includes an electric actuator embedded around the outer perimeter of the fixed base, an arc-shaped friction plate is installed at the movable end of the electric actuator, a friction ring is installed in the inner cavity of the rotating cylinder, and the arc-shaped friction plate is attached to the inner wall of the friction ring.

[0009] Preferably, a fixed cylinder is fixed to the inner side of the arc-shaped friction plate, and a connecting seat is movably arranged in the inner cavity of the fixed cylinder. One end of the connecting seat extends through to the outer side of the fixed cylinder and is fixedly connected to the movable end of the electric push rod. A pressure sensor aligned with the connecting seat is arranged in the inner cavity of the fixed cylinder.

[0010] Preferably, a limiting rod is fixed around the inner side of the arc-shaped friction plate, and the end of the limiting rod away from the arc-shaped friction plate slides through into the interior of the fixed base.

[0011] Preferably, the rewinder frame is equipped with two sets of speed sensors corresponding to the rotating drum and the fixed seat, respectively, and the speed sensors are located inside the bearing seat.

[0012] Preferably, a cover plate is provided at the end of the rotating drum away from the rewinder frame, and mounting bolts are provided on the outer side of the cover plate, the mounting bolts passing through the cover plate and threadedly connected to the rotating drum.

[0013] Preferably, the outer wall of the friction ring and the inner wall of the rotating cylinder are provided with grooves, and a limit block is engaged in the groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model connects the expansion shaft and the rotating drum by frictional connection assembly. Then, the winding motor drives the drive synchronous pulley at its rated high speed. The rotating drum is then driven synchronously by the driven synchronous pulley and the synchronous belt. Based on the data fed back by the speed sensor and pressure sensor, the position of the arc-shaped friction plate is adjusted in real time by the electric push rod to adjust the pressure of the arc-shaped friction plate on the friction ring. This is used to control the change of friction between the arc-shaped friction plate and the friction ring. The friction force is used to drive the expansion shaft, realizing the speed change of the expansion shaft to wind the paper roll. Since it does not act directly on the paper roll, the damage to the paper roll is small, and the tension of the paper roll can be kept uniform.

[0016] 2. By setting a limiting rod, this utility model ensures that the arc-shaped friction plate remains stable when it separates from the friction ring, so that the arc-shaped friction plate and the friction ring make frictional contact with the maximum contact surface, thus ensuring the accuracy of friction force calculation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram showing the disassembled structure of the fixed base and the rotating cylinder of this utility model;

[0020] Figure 4 This is a cross-sectional perspective view of the fixing base of this utility model;

[0021] Figure 5 This is a cross-sectional three-dimensional structural diagram of the fixing cylinder of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram showing the disassembled rotating cylinder and friction ring of this utility model;

[0023] Figure 7 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0024] The following are the labeling elements in the diagram: 1. Expansion shaft; 2. Rewinding drum; 3. Rewinder frame; 4. Rewinding motor; 5. Drive synchronous pulley; 6. Driven synchronous pulley; 7. Rotating drum; 8. Fixed seat; 9. Friction connection assembly; 91. Electric push rod; 92. Arc-shaped friction plate; 93. Friction ring; 10. Fixed drum; 11. Connecting seat; 12. Pressure sensor; 13. Limiting rod; 14. Speed ​​sensor; 15. Cover plate; 16. Mounting bolt; 17. Groove; 18. Limiting block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figures 1-7 The illustrated paper roll production packaging and rewinding machine with tension adjustment function includes:

[0027] An expansion shaft 1 is rotatably mounted on the rewinder frame 3 via a bearing, and a winding drum 2 for winding the paper roll is mounted on the outside of the expansion shaft 1.

[0028] A winding motor 4 is fixed on the frame 3 of the rewinder. A drive synchronous pulley 5 is fixed on the output shaft of the winding motor 4. A driven synchronous pulley 6 is movably installed on the outer side of one end of the expansion shaft 1. The driven synchronous pulley 6 is connected to the outer side of the drive synchronous pulley 5 through a synchronous belt drive. A rotating drum 7 is mounted on the outer side of the frame 3 of the rewinder through a bearing seat. It is sleeved on the outer side of the expansion shaft 1 and coaxial with the expansion shaft 1. The driven synchronous pulley 6 is fixed on the outer side of the rotating drum 7. A fixed seat 8 is installed at the end of the expansion shaft 1. A friction connection assembly 9 is provided between the fixed seat 8 and the rotating drum 7. The precise control of the equipment is controlled by the control system of the rewinder.

[0029] The expansion shaft 1 and the rotating drum 7 are connected by friction through the friction connection assembly 9. Then, the winding motor 4 drives the drive timing pulley 5 at its rated high speed. The rotating drum 7 is then driven synchronously by the driven timing pulley 6 and the timing belt. Based on the data fed back by the speed sensor 14 and the pressure sensor 12, the position of the arc-shaped friction plate 92 is adjusted in real time through the electric push rod 91 to adjust the pressure of the arc-shaped friction plate 92 on the friction ring 93. This is used to control the change of friction between the arc-shaped friction plate 92 and the friction ring 93. The friction is used to drive the expansion shaft 1, so that the expansion shaft 1 can be wound up at different speeds. Since it does not act directly on the paper, the damage to the paper is small, and the tension of the paper can be kept uniform.

[0030] Among them, such as Figure 3-4 As shown:

[0031] The friction connection assembly 9 includes an electric push rod 91 embedded around the outer periphery of the fixed base 8. An arc-shaped friction plate 92 is installed at the movable end of the electric push rod 91. A friction ring 93 is installed in the inner cavity of the rotating cylinder 7. The arc-shaped friction plate 92 is attached to the inner wall of the friction ring 93. The arc-shaped friction plate 92 can be pushed by the electric push rod 91, so that the arc-shaped friction plate 92 is pressed and attached to the friction ring 93. The friction between the arc-shaped friction plate 92 and the friction ring 93 is used as the power to drive the expansion shaft 1.

[0032] Furthermore, such as Figure 5 As shown:

[0033] A fixed cylinder 10 is fixed to the inner side of the arc-shaped friction plate 92. A connecting seat 11 is movably arranged in the inner cavity of the fixed cylinder 10. One end of the connecting seat 11 extends through to the outer side of the fixed cylinder 10 and is fixedly connected to the movable end of the electric push rod 91. A pressure sensor 12 is arranged in the inner cavity of the fixed cylinder 10 and is aligned with the connecting seat 11. The connecting seat 11 is connected to the movable end of the electric push rod 91. By cooperating with the fixed cylinder 10, the electric push rod 91 and the arc-shaped friction plate 92 are movably connected. The pressure sensor 12 can monitor the pressure value applied by the arc-shaped friction plate 92 to the friction ring 93 in real time, and is used to control the magnitude of the friction force.

[0034] Preferred, such as Figure 4 As shown:

[0035] Limiting rods 13 are fixed around the inner side of the arc-shaped friction plate 92. The end of the limiting rod 13 away from the arc-shaped friction plate 92 slides through into the interior of the fixed seat 8. By setting the limiting rod 13, the arc-shaped friction plate 92 is kept stable when it separates from the friction ring 93, so that the arc-shaped friction plate 92 and the friction ring 93 make frictional contact with the maximum contact surface, thus ensuring the accuracy of friction force calculation.

[0036] It is worth noting that, such as Figure 7 As shown:

[0037] Two sets of speed sensors 14 are installed on the rewinder frame 3, corresponding to the rotating drum 7 and the fixed seat 8 respectively. The speed sensors 14 are located inside the bearing seat. The speed sensors 14 can monitor the speed of the rotating drum 7 and the fixed seat 8 respectively. Then, the friction force between the arc-shaped friction plate 92 and the friction ring 93 is controlled by the electric push rod 91 to regulate the speed of the expansion shaft 1, so as to realize the tension winding of the paper roll by the winding drum 2, while ensuring that the tension of the paper roll remains uniform.

[0038] In a further preferred embodiment, such as Figure 2 As shown:

[0039] A cover plate 15 is provided at the end of the rotating drum 7 away from the rewinder frame 3. A mounting bolt 16 is provided on the outside of the cover plate 15. The mounting bolt 16 passes through the cover plate 15 and is threadedly connected to the rotating drum 7. The cover plate 15 can be installed by the mounting bolt 16. The cover plate 15 is used to limit the friction ring 93 and prevent the friction ring 93 from moving out of the rotating drum 7.

[0040] In addition, such as Figure 6 As shown:

[0041] The outer wall of the friction ring 93 and the inner wall of the rotating cylinder 7 are aligned with a groove 17, and a limiting block 18 is engaged in the groove 17. By engaging the limiting block 18 in the groove 17, the friction ring 93 and the rotating cylinder 7 can rotate synchronously, preventing the friction ring 93 from sliding in the rotating cylinder 7 and affecting the control accuracy of the equipment.

[0042] In practical use, the winding motor 4 drives the drive synchronous pulley 5 to rotate, and then the driven synchronous pulley 6 rotates synchronously with the drive synchronous pulley 5 under the drive of the synchronous belt. Subsequently, the driven synchronous pulley 6 drives the rotating drum 7 to rotate synchronously, causing the friction ring 93 to rotate around the fixed seat 8 outside the expansion shaft 1. The speed sensor 14 detects the speed of the rotating drum 7 and the fixed seat 8 in real time. At the same time, the pressure sensor 12 monitors the pressure between the connecting seat 11 and the fixed drum 10, and the information processing system of the rewinder processes the data. Then, it controls the electric push rod 91 to operate. The electric push rod 91 drives the connecting seat 11 to apply pressure to the fixed drum 10. The pressure is transmitted to the arc-shaped friction plate 92 through the fixed drum 10, becoming the positive pressure applied by the arc-shaped friction plate 92 to the friction ring 93. The arc-shaped friction plate 92 and the friction ring 93... The rotating shaft drives the fixed base 8 and the expansion shaft 1 to rotate through friction. When the winding tension of the paper roll 2 is too low, the pressure sensor 12 detects the pressure value and provides data feedback. Then, the control system controls the movable end of the electric push rod 91 to extend outward, increasing the pressure value applied by the arc-shaped friction plate 92 to the friction ring 93. This ensures that the friction between the arc-shaped friction plate 92 and the friction ring 93 increases, allowing the expansion shaft 1 to obtain a more stable driving force through friction, which is used to increase the rotation speed and ensure that the tension of the paper roll increases, preventing the paper roll from becoming loose during winding. When the winding tension of the paper roll is too high, the electric push rod 91 retracts its movable end, reducing the friction between the arc-shaped friction plate 92 and the friction ring 93, reducing the driving wheel of the expansion shaft 1, and thus reducing the rotation speed of the expansion shaft 1, preventing the paper roll from tearing due to excessive tension.

[0043] It is worth noting that the speed of the driven synchronous pulley needs to be greater than the maximum winding speed of the expansion shaft.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A packing and rewinding machine for paper roll production with tension adjustment function, characterized in that, include: An expansion shaft (1) is rotatably mounted on the rewinder frame (3) via a bearing, and a winding drum (2) for winding the paper roll is mounted on the outside of the expansion shaft (1). A winding motor (4) is fixed on the rewinding machine frame (3). A drive synchronous pulley (5) is fixed on the output shaft of the winding motor (4). A driven synchronous pulley (6) is movably installed on the outer side of one end of the expansion shaft (1). The driven synchronous pulley (6) is connected to the outer side of the drive synchronous pulley (5) by a synchronous belt drive. A rotating drum (7) is mounted on the outer side of the rewinding machine frame (3) through a bearing seat and is sleeved on the outer side of the expansion shaft (1) and coaxial with the expansion shaft (1). The driven synchronous pulley (6) is fixed on the outer side of the rotating drum (7). A fixed seat (8) is installed at the end of the expansion shaft (1). A friction connection assembly (9) is provided between the fixed seat (8) and the rotating drum (7).

2. The packing and rewinding machine for paper roll production with tension adjustment function according to claim 1, characterized in that: The friction connection assembly (9) includes an electric push rod (91) embedded around the outside of the fixed base (8). The movable end of the electric push rod (91) is equipped with an arc-shaped friction plate (92). The inner cavity of the rotating cylinder (7) is equipped with a friction ring (93). The arc-shaped friction plate (92) is attached to the inner wall of the friction ring (93).

3. A packing and rewinding machine for paper roll production with tension adjustment function according to claim 2, characterized in that: A fixed cylinder (10) is fixed on the inner side of the arc-shaped friction plate (92). A connecting seat (11) is movably arranged in the inner cavity of the fixed cylinder (10). One end of the connecting seat (11) extends through to the outer side of the fixed cylinder (10) and is fixedly connected to the movable end of the electric push rod (91). A pressure sensor (12) is arranged in the inner cavity of the fixed cylinder (10) and is aligned with the connecting seat (11).

4. A packing and rewinding machine for paper roll production with tension adjustment function according to claim 2, characterized in that: Limiting rods (13) are fixed around the inner side of the arc-shaped friction plate (92), and the end of the limiting rod (13) away from the arc-shaped friction plate (92) slides through into the interior of the fixed seat (8).

5. A packing and rewinding machine for paper roll production with tension adjustment function according to claim 1, characterized in that: The rewinder frame (3) is equipped with two sets of speed sensors (14) corresponding to the rotating drum (7) and the fixed seat (8) respectively. The speed sensors (14) are located inside the bearing seat.

6. A packing and rewinding machine for paper roll production with tension adjustment function according to claim 1, characterized in that: The rotating drum (7) is provided with a cover plate (15) at one end away from the rewinder frame (3). The cover plate (15) is provided with mounting bolts (16) on the outside. The mounting bolts (16) pass through the cover plate (15) and are threadedly connected to the rotating drum (7).

7. A packing and rewinding machine for paper roll production with tension adjustment function according to claim 2, characterized in that: The outer wall of the friction ring (93) and the inner wall of the rotating cylinder (7) are provided with grooves (17), and a limiting block (18) is engaged in the grooves (17).

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