A tension regulating device for a rewinding machine

Abstract

The utility model discloses a kind of tension adjusting device for rewinding machine, including base and adjusting mechanism;Base: its upper end is provided with detection mechanism, the detection mechanism includes detection shaft, bottom plate and pressure sensor, the upper end of base is provided with bottom plate, the upper surface of bottom plate is fixedly connected with the pressure sensor of left-right symmetrical distribution, the upper end of pressure sensor is fixedly connected with bearing seat one, detection shaft is rotatably connected between two bearing seat one by bearing one;Adjusting mechanism: it includes ball screw, the middle part of base is rotatably connected with ball screw by bearing two, the lower surface middle part of the nut of ball screw and bottom plate is fixedly connected, the upper end of ball screw passes through the through-hole of bottom plate middle part, further include controller, the controller is set to the rear side of base, this tension adjusting device for rewinding machine can automatically adjust according to the tension change detected, facilitate control tension change.

Description

Technical Field

[0001] This utility model relates to the field of tension adjustment technology for rewinding machines, specifically a tension adjustment device for rewinding machines. Background Technology

[0002] The use of AC drives instead of DC drives in rewinders has become a development trend in the paper machinery industry. Paper rolls produced by paper winding machines are relatively soft, and may have internal damage or breaks, uneven edges, and varying widths, making them unsuitable for direct use in paper processing or printing machines. Most types of paper (such as newsprint, letterpress printing paper, and packaging paper) must undergo edge trimming, slitting, splicing, and rewinding on a paper core by a rewinder to form finished paper rolls with specific specifications and tightness requirements before they can be shipped out.

[0003] A rewinder is a specialized piece of equipment used for paper, mica tape, and film. Its purpose is to rewind paper rolls (called base rolls) produced by papermaking machines sequentially. After rewinding, the paper is made into finished paper and shipped out. After the base rolls are guided on the rewinder, workers need to manually press the paper and adjust the tension by feel. Unwinding is controlled by a magnetic powder brake, while winding is generally controlled by a frequency converter. As the roll diameter changes, the unwinding linear speed changes, and the paper tension changes. It is difficult for the frequency converter to match the changing tension, so a certain level of operator skill is required. To address this, we propose a tension adjustment device for rewinders. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a tension adjustment device for a rewinding machine that can automatically adjust according to the detected tension changes, making it easy to control tension changes and effectively solving the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tension adjustment device for a rewinding machine, comprising a base and an adjustment mechanism;

[0006] Base: A detection mechanism is provided at its upper end. The detection mechanism includes a detection shaft, a base plate and pressure sensors. A base plate is provided at the upper end of the base. Pressure sensors symmetrically distributed on the left and right are fixedly connected to the upper surface of the base plate. Each pressure sensor is fixedly connected to a bearing seat 1 at its upper end. The detection shaft is rotatably connected between the two bearing seats 1 through the bearing 1.

[0007] Adjustment mechanism: It includes a ball screw. The ball screw is rotatably connected to the middle of the base through a bearing. The nut of the ball screw is fixedly connected to the middle of the lower surface of the base plate. The upper end of the ball screw passes through the through hole in the middle of the base plate and can automatically adjust according to the detected tension change, which is convenient for controlling the tension change.

[0008] Furthermore, it also includes a controller, which is located on the rear side of the base. The input terminal of the controller is electrically connected to an external power source, and the pressure sensor is bidirectionally electrically connected to the controller to control electrical appliances.

[0009] Furthermore, the adjustment mechanism also includes a motor base and a motor. The motor is fixedly connected to the middle of the lower surface of the base. The upper end of the motor output group and the lower end of the ball screw are fixedly connected by a coupling. The input end of the motor is electrically connected to the output end of the controller, thereby driving the ball screw to rotate.

[0010] Furthermore, the adjustment mechanism also includes a dust cover and a rubber sleeve. The dust cover is fixedly connected to the upper surface of the base plate, the upper end of the ball screw is located inside the dust cover, and the middle part of the ball screw is movably fitted with a rubber sleeve. The rubber sleeve is fixedly connected between the base and the base plate to achieve dust protection for the ball screw.

[0011] Furthermore, the lower surface of the base plate is fixedly connected with evenly distributed limiting posts, which pass through vertically adjacent through holes on the upper surface of the base to limit the position of the base.

[0012] Furthermore, the upper surface of the base is fixedly connected with evenly distributed sliding cylinders, and the lower ends of the limiting posts are slidably connected to the interiors of vertically adjacent sliding cylinders, making the lifting and lowering of the limiting posts more stable.

[0013] Furthermore, it also includes a fixed base, which is fixedly connected to the left and right sides of the upper surface of the base. Extension seats are fixedly connected to the front and rear sides of the fixed base. Bearing seats two are fixedly connected to the upper end of the extension seats. An auxiliary shaft is rotatably connected between two adjacent bearing seats two via bearing three, which is suitable for various equipment.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This tension adjustment device for a rewinding machine has the following advantages:

[0015] The detection shaft detects the tension changes of the paper passing through it via a pressure sensor. The controller compares the detected tension with a preset value and controls the motor to move the detection shaft up or down, restoring the paper tension to the preset value. After the initial run is completed by a skilled worker, there is no need to readjust the tension again, making it easy to control the paper tension. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the detection mechanism and adjustment mechanism of this utility model.

[0018] In the diagram: 1. Base, 2. Detection mechanism, 21. Detection shaft, 22. Base plate, 23. Pressure sensor, 3. Adjustment mechanism, 31. Dust cover, 32. Rubber sleeve, 33. Ball screw, 34. Motor base, 35. Motor, 4. Limiting post, 5. Fixing seat, 6. Extension seat, 7. Auxiliary shaft, 8. Controller, 9. Slide cylinder. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-2 This embodiment provides a technical solution: a tension adjustment device for a rewinding machine, including a base 1 and an adjustment mechanism 3;

[0021] Base 1: A detection mechanism 2 is provided on its upper end. The detection mechanism 2 includes a detection shaft 21, a base plate 22, and a pressure sensor 23. The base plate 22 is provided on the upper end of the base 1. The pressure sensors 23 are symmetrically distributed on the left and right sides and are fixedly connected to the upper surface of the base plate 22. The upper end of each pressure sensor 23 is fixedly connected to a bearing seat 1. The detection shaft 21 is rotatably connected between the two bearing seats 1 through the bearing seat 1. The lower surface of the base plate 22 is fixedly connected to evenly distributed limit posts 4. The limit posts 4 pass through vertically adjacent through holes on the upper surface of the base 1. The upper surface of the base 1 is fixedly connected to evenly distributed slide cylinders 9. The lower ends of the limit posts 4 are slidably connected to the interior of vertically adjacent slide cylinders 9. When the paper passes the upper end of the detection shaft 21, it generates a downward pressure on the detection shaft 21. The pressure sensor 23 detects the pressure change of the detection shaft 21 and feeds it back to the controller 8.

[0022] Adjustment mechanism 3 includes a ball screw 33, which is rotatably connected to the middle of the base 1 via a bearing. The nut of the ball screw 33 is fixedly connected to the middle of the lower surface of the base plate 22. The upper end of the ball screw 33 passes through a through hole in the middle of the base plate 22. Adjustment mechanism 3 also includes a motor base 34 and a motor 35. The motor 35 is fixedly connected to the middle of the lower surface of the base 1. The upper end of the output assembly of the motor 35 and the lower end of the ball screw 33 are fixedly connected via a coupling. The input end of the motor 35 is electrically connected to the output end of the controller 8. Adjustment mechanism 3 also includes a dust cover 31 and a rubber sleeve 32. The dust cover 31 is fixedly connected to the upper surface of the base plate 22. The upper end of 3 is located inside the dust cover 31. The middle part of the ball screw 33 is movably fitted with a rubber sleeve 32. The rubber sleeve 32 is fixedly connected between the base 1 and the bottom plate 22. When the paper tension deviates from the predetermined tension during winding, the controller 8 controls the motor 35 to start. The output shaft of the motor 35 drives the ball screw 33 to rotate. The nut of the ball screw 33 pushes the bottom plate 22 to rise. The limit post 4 rises inside the adjacent slide cylinder 9, realizing the rise of the detection shaft 21. The detection shaft 21 presses the paper upward. The paper generates a downward reaction force on the detection shaft 21. The tension detected by the pressure sensor 23 increases, and vice versa, the tension decreases, realizing automatic tension adjustment.

[0023] It also includes a controller 8, which is located on the rear side of the base 1. The input end of the controller 8 is electrically connected to an external power source, and the pressure sensor 23 is bidirectionally electrically connected to the controller 8.

[0024] The device includes a fixed base 5, which is fixedly connected to the left and right sides of the upper surface of the base 1. An extension base 6 is fixedly connected to both the front and rear sides of the fixed base 5. A bearing seat 2 is fixedly connected to the upper end of each extension base 6. An auxiliary shaft 7 is rotatably connected between two adjacent bearing seats 2 via a bearing 3. The tension adjustment device is installed on the rewinding machine through the base 1. If there are few guide shafts between the winding mechanism and the unwinding mechanism, an auxiliary shaft 7 is installed. The paper passes through the lower end of the auxiliary shaft 7 on one side, passes through the upper end of the detection shaft 21, and then passes through the lower end of the auxiliary shaft 7 on the other side. If there are many guide shafts, an auxiliary shaft 7 is not installed.

[0025] The working principle of the tension adjustment device for a rewinding machine provided by this utility model is as follows: The tension adjustment device is installed on the rewinding machine via a base 1. If there are few guide shafts between the winding mechanism and the unwinding mechanism, an auxiliary shaft 7 is installed. The paper passes through the lower end of the auxiliary shaft 7 on one side, passes through the upper end of the detection shaft 21, and then passes through the lower end of the auxiliary shaft 7 on the other side. If there are many guide shafts, the auxiliary shaft 7 is not installed. The paper passes through the upper end of the detection shaft 21. When the paper passes through the detection shaft 21, it generates a downward pressure on the detection shaft 21. The pressure sensor 23 detects the pressure change of the detection shaft 21 and feeds it back to the controller 8. The debugging personnel adjust the paper according to the pressure changes. The tension is determined by the paper's tension status. When the tension is appropriate, the controller 8 records the tension at this time. During winding, when the paper tension deviates from the predetermined tension, the controller 8 controls the motor 35 to start. The output shaft of the motor 35 drives the ball screw 33 to rotate. The nut of the ball screw 33 pushes the base plate 22 to rise, and the limit posts 4 rise inside the adjacent slide cylinders 9, thereby raising the detection shaft 21. The detection shaft 21 presses the paper upward, and the paper generates a downward reaction force on the detection shaft 21. The tension detected by the pressure sensor 23 increases, and vice versa, the tension decreases, thus achieving automatic tension adjustment. The dust cover 31 and the rubber sleeve 32 prevent dust from entering the ball screw 33.

[0026] It is worth noting that the controller 8 disclosed in the above embodiments can be an N32G455RCL7, the pressure sensor 23 can be a JFG-LP02 pressure sensor, and the motor 35 can be an MR-J2S series servo motor. The controller 8 controls the operation of the pressure sensor 23 and the motor 35 using methods commonly used in the prior art.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tension adjusting device for a rewinding machine, characterized in that: Includes a base (1) and an adjustment mechanism (3); Base (1): A detection mechanism (2) is provided at its upper end. The detection mechanism (2) includes a detection shaft (21), a base plate (22) and a pressure sensor (23). The upper end of the base (1) is provided with a base plate (22). A pressure sensor (23) is fixedly connected to the upper surface of the base plate (22) and is symmetrically distributed on the left and right. A bearing seat is fixedly connected to the upper end of each pressure sensor (23). The detection shaft (21) is rotatably connected between the two bearing seats through the bearing. Adjustment mechanism (3): It includes a ball screw (33). The middle part of the base (1) is rotatably connected to the ball screw (33) through a bearing. The nut of the ball screw (33) is fixedly connected to the middle part of the lower surface of the base plate (22). The upper end of the ball screw (33) passes through the through hole in the middle part of the base plate (22).

2. The tension adjusting device for a rewinder according to claim 1, characterized in that: It also includes a controller (8), which is located on the rear side of the base (1). The input end of the controller (8) is electrically connected to an external power source, and the pressure sensor (23) is bidirectionally electrically connected to the controller (8).

3. A tension adjusting device for a rewinder according to claim 2, characterized in that: The adjustment mechanism (3) also includes a motor base (34) and a motor (35). The motor (35) is fixedly connected to the middle of the lower surface of the base (1). The upper end of the output group of the motor (35) and the lower end of the ball screw (33) are fixedly connected by a coupling. The input end of the motor (35) is electrically connected to the output end of the controller (8).

4. The tension adjusting device for a rewinder according to claim 1, characterized in that: The adjustment mechanism (3) also includes a dust cover (31) and a rubber sleeve (32). The dust cover (31) is fixedly connected to the upper surface of the base plate (22). The upper end of the ball screw (33) is located inside the dust cover (31). The middle part of the ball screw (33) is movably fitted with a rubber sleeve (32). The rubber sleeve (32) is fixedly connected between the base (1) and the base plate (22).

5. A tension adjusting device for a rewinder according to claim 1, characterized in that: The lower surface of the base plate (22) is fixedly connected with uniformly distributed limiting posts (4), which pass through vertically adjacent through holes on the upper surface of the base (1).

6. A tension adjusting device for a rewinder according to claim 5, characterized in that: The upper surface of the base (1) is fixedly connected with evenly distributed slide cylinders (9), and the lower ends of the limiting posts (4) are slidably connected to the interiors of vertically adjacent slide cylinders (9).

7. A tension adjusting device for a rewinder according to claim 1, characterized in that: It also includes a fixed seat (5), which is fixedly connected to the left and right sides of the upper surface of the base (1). An extension seat (6) is fixedly connected to both the front and rear sides of the fixed seat (5). A bearing seat 2 is fixedly connected to the upper end of the extension seat (6). An auxiliary shaft (7) is rotatably connected between two adjacent bearing seats 2 on the left and right sides through a bearing 3.

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