Packaging bag winding device

Abstract

The utility model discloses a packaging bag winding device which comprises a winding roller, a driving motor, a tightener and a machine frame, the winding roller and the tightener are installed on the machine frame, the driving motor drives the winding roller to rotate, the tightener comprises a guide roller, a pressure roller, a movable pulley, a first pull rope and a counterweight assembly, and the guide roller is connected with the pressure roller. The guide rollers are arranged at the two ends of the pressure roller, the pressure roller is connected with a first pull rope, the first pull rope bypasses the movable pulley and then is connected with the rack, and the axis of the movable pulley is connected with the counterweight assembly. According to the packaging bag winding device, the response speed of pressure adjustment is increased, and the packaging bag winding device can rapidly adapt to the change of the tightness degree of a packaging bag.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing bag winding technical field, especially a packing bag winding device. BACKGROUND

[0002] In modern industrial production, the winding device of packing bag is widely used in the packaging process of various products. The existing winding device of packing bag usually includes a winding roller and a driving motor, which rotates the winding roller by the driving motor to complete the winding operation by winding the packing bag on the winding roller. In the winding process, due to the material properties or tension changes of the packing bag, it is easy to appear the situation of uneven tightness. If the packing bag is too loose, it will lead to loose winding, which will affect the subsequent use; if it is too tight, it may cause the packing bag to be damaged or deformed. When the tightness of the existing winding device changes due to external factors (such as thickness change, speed fluctuation, etc.), it cannot be adjusted in time, thereby affecting the winding quality. SUMMARY

[0003] In view of the above prior art, the utility model provides a winding device of packing bag, which improves the response speed of pressure regulation and can quickly adapt to the change of the tightness of the packing bag.

[0004] To achieve the above purpose, the technical scheme of the utility model embodiment is as follows:

[0005] A winding device of packing bag, comprising a winding roller, a driving motor, a tensioner and a rack, the winding roller and the tensioner are installed on the rack, the driving motor drives the winding roller to rotate, the tensioner comprises a guide roller, a pressure roller, a movable pulley, a first pull rope and a counterweight assembly, the guide roller is arranged at both ends of the pressure roller, the pressure roller is connected with the first pull rope, the first pull rope is connected with the rack after winding around the movable pulley, and the shaft center of the movable pulley is connected with the counterweight assembly.

[0006] Further, the bottom of the movable pulley is provided with a U-shaped plate, the rotating shaft of the movable pulley is connected with the U-shaped plate, and the U-shaped plate is connected with the counterweight assembly.

[0007] Further, the counterweight assembly comprises a connecting rod and a counterweight block, the connecting rod is connected with the U-shaped plate, and the U-shaped plate is connected with the counterweight block.

[0008] Further, the bottom of the connecting rod is provided with a bottom support, the counterweight block is provided with a strip-shaped hole, and the strip-shaped hole can pass through the connecting rod.

[0009] Further, the counterweight assembly further comprises a second pull rope, a third pull rope, a cylindrical wheel, a conical wheel and a sliding block, the U-shaped plate is connected with the cylindrical wheel through the second pull rope, the cylindrical wheel is fixedly connected with the conical wheel, the side surface of the conical wheel is provided with the sliding block, the sliding block is connected with the third pull rope, and the third pull rope is connected with the connecting rod after winding around the conical wheel.

[0010] Further, the surface of the conical wheel is provided with an antiskid sleeve.

[0011] Further, the cylindrical wheel is provided with a winding groove.

[0012] The beneficial effects of the utility model lie in that the pressure roller in the tensioner can dynamically adjust the tension of the packaging bag under the action of the counterweight assembly, ensure that the packaging bag always maintains appropriate pre-tightening force in the moving process, and avoid the problems of uneven winding or damage caused by being too loose or too tight. Due to the cooperation design of the first pull rope and the movable pulley, the displacement distance of the pressure roller is larger under the same movement distance of the counterweight assembly, so that the tensioner can respond to the change of the tightness of the packaging bag faster, adjust the tension in time, and is especially suitable for high-speed winding scenes. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a side surface structure schematic view of a packaging bag winding device in embodiment 1 of the application;

[0014] Figure 2 It is a three-dimensional structure schematic view of a packaging bag winding device in embodiment 1 of the application;

[0015] Figure 3 It is a three-dimensional structure schematic view of a packaging bag winding device in embodiment 2 of the application;

[0016] BRIEF DESCRIPTION OF DRAWINGS

[0017] 1, winding roller; 2, driving motor; 3, tensioner; 4, rack; 5, guide roller; 6, pressure roller; 7, movable pulley; 8, first pull rope; 9, counterweight assembly; 10, U-shaped plate; 11, connecting rod; 12, counterweight block; 13, bottom support; 14, strip-shaped hole; 15, second pull rope; 16, third pull rope; 17, cylindrical wheel; 18, conical wheel; 19, sliding block; 20, antiskid sleeve; 21, winding groove. DETAILED DESCRIPTION

[0018] The technical solutions of the present application are further described in detail below in conjunction with the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. In the following description, the expression "some embodiments" describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0019] It should be further noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "inner", "outer", "left", "right", and similar expressions used herein are for the purpose of illustration only and are not intended to be the only implementation.

[0020] Example 1

[0021] Please refer to the accompanying drawings Figure 12, The application provides a packaging bag winding device, comprising a winding roller 1, a driving motor 2, a tensioner 3 and a rack 4, the winding roller 1 and the tensioner 3 are installed on the rack 4, the driving motor 2 drives the winding roller 1 to rotate, the tensioner 3 comprises a guide roller 5, a pressure roller 6, a movable pulley 7, a first pull rope 8 and a counterweight assembly 9, the guide roller 5 is arranged at both ends of the pressure roller 6, the pressure roller 6 is connected with the first pull rope 8, preferably, the central shaft of the pressure roller 6 is connected with the first pull rope 8, the pressure roller 6 can rotate relative to the central shaft thereof, that is, the roller body of the pressure roller 6 is connected with the central shaft in a rotatable mode, the roller body can rotate relative to the central shaft, the first pull rope 8 is connected with the rack 4 after passing through the movable pulley 7, and the shaft center of the movable pulley 7 is connected with the counterweight assembly 9. The packaging belt is wound on the winding roller 1 after passing through the guide roller 5, the pressure roller and another guide roller 5, the winding roller 1 is driven to rotate under the driving of the motor, and the packaging is wound by the winding roller 1. The pressure roller presses the packaging bag downward, so that the packaging bag is tensioned, and the packaging bag is wound under the pre-tightening force, so that the packaging bag is better wound. In the process of tensioning the packaging bag, the counterweight assembly 9 pulls the shaft center of the movable pulley 7 downward under the action of gravity, so that the movable pulley 7 moves downward. One end of the first pull rope 8 is connected with the rack 4, and the other end passes through the movable pulley 7 and is then connected with the pressure roller, so that the displacement distance of the pressure roller is larger under the same movement distance of the counterweight assembly 9, and therefore the pressure roller can move downward to tension the packaging bag more quickly when the tightness of the packaging bag is displaced.

[0022] Optionally, the bottom of the movable pulley 7 is provided with a U-shaped plate 10, the rotating shaft of the movable pulley 7 is connected with the U-shaped plate 10, and the U-shaped plate 10 is connected with the counterweight assembly 9. The counterweight assembly 9 pulls the U-shaped plate 10, and then pulls the movable pulley 7 through the U-shaped plate 10, and the counterweight assembly 9 does not need to rotate in the movement process, so that a stable tensioning force on the pressure roller can be maintained.

[0023] Specifically, the counterweight assembly 9 comprises a connecting rod 11 and a counterweight block 12, the connecting rod 11 is connected with the U-shaped plate 10, and the U-shaped plate 10 is connected with the counterweight block 12. The counterweight block 12 is connected with the U-shaped plate 10 through the connecting rod 11, and the counterweight block 12 maintains a movement distance from the U-shaped plate 10, so as to prevent the counterweight block 12 from affecting the winding of the packaging bag or the rotation of the pressure roller 6.

[0024] Specifically, the bottom of the connecting rod 11 is provided with a bottom support 13, the counterweight block 12 is provided with a strip-shaped hole 14, and the strip-shaped hole 14 can pass through the connecting rod 11. The strip-shaped hole 14 passes through the connecting rod 11, and the counterweight block 12 is placed on the bottom support 13, different numbers of counterweight blocks 12 can be placed according to needs, so as to adjust the pressure of the pressure roller.

[0025] Embodiment 2

[0026] Please refer to the attached drawings Figure 3 The difference between the embodiment and embodiment 1 is that the counterweight assembly 9 further comprises a second pull rope 15, a third pull rope 16, a cylindrical wheel 17, a conical wheel 18 and a sliding block 19, the U-shaped plate 10 is connected with the cylindrical wheel 17 through the second pull rope 15, the cylindrical wheel 17 is fixedly connected with the conical wheel 18, the side surface of the conical wheel 18 is provided with the sliding block 19, the sliding block 19 is connected with the third pull rope 16, and the third pull rope 16 is connected with the connecting rod 11 after passing through the conical wheel 18. The upper end of the third pull rope 16 is connected on the sliding block 19, then passes through the conical wheel 180.75-2 times and is connected with the connecting rod 11, the gravity generated by the counterweight 12 pulls the third pull rope 16, and a torsional moment is generated on the conical wheel 18 through the third pull rope 16, the conical wheel 18 and the cylindrical wheel 17 are fixedly connected, so that a moment is also generated on the cylindrical wheel 17 to pull the second pull rope 15. The second pull rope 15 acts on the U-shaped plate 10 to pull the compression roller 6 to be tight. The sliding block 19 can slide along the axial direction of the conical wheel 18, so that the third pull rope 16 can be wound around different diameter positions, so that the moment generated by the counterweight 12 is infinitely adjusted, the tension of the compression roller is conveniently adjusted, and the tension of the compression roller can better adapt to the winding of the packaging bag.

[0027] Specifically, the surface of the conical wheel 18 is provided with an antiskid sleeve 20. The antiskid sleeve 20 is used to prevent the third pull rope 16 from slipping and improve stability.

[0028] Specifically, the cylindrical wheel 17 is provided with a winding groove 21. The second pull rope 15 is wound in the winding groove 21, and the stability of winding is improved.

[0029] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. The protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A wrapping bag winding device characterized by comprising: The application relates to a winding roller (1), a driving motor (2), a tensioner (3) and a frame (4), wherein the winding roller (1) and the tensioner (3) are installed on the frame (4), the driving motor (2) drives the winding roller (1) to rotate, the tensioner (3) comprises a guide roller (5), a pressure roller (6), a movable pulley (7), a first pull rope (8) and a counterweight assembly (9), the guide roller (5) is arranged at two ends of the pressure roller (6), the pressure roller (6) is connected with the first pull rope (8), the first pull rope (8) is connected with the frame (4) after passing through the movable pulley (7), and the shaft center of the movable pulley (7) is connected with the counterweight assembly (9).

2. The wrapping bag winding apparatus according to claim 1, wherein The bottom of the movable pulley (7) is provided with a U-shaped plate (10), the rotating shaft of the movable pulley (7) is connected with the U-shaped plate (10), and the U-shaped plate (10) is connected with the counterweight assembly (9).

3. A wrapping bag winding device according to claim 2, characterized in that The counterweight assembly (9) comprises a connecting rod (11) and a counterweight block (12), the connecting rod (11) is connected with the U-shaped plate (10), and the U-shaped plate (10) is connected with the counterweight block (12).

4. The wrapping bag winding apparatus according to claim 3, wherein The bottom of the connecting rod (11) is provided with a bottom support (13), the counterweight block (12) is provided with a strip-shaped hole (14), and the strip-shaped hole (14) can pass through the connecting rod (11).

5. The wrapping bag winding apparatus according to claim 3, wherein The counterweight assembly (9) further comprises a second pull rope (15), a third pull rope (16), a cylindrical wheel (17), a conical wheel (18) and a sliding block (19), the U-shaped plate (10) is connected with the cylindrical wheel (17) through the second pull rope (15), the cylindrical wheel (17) is fixedly connected with the conical wheel (18), the side surface of the conical wheel (18) is provided with the sliding block (19), the sliding block (19) is connected with the third pull rope (16), and the third pull rope (16) is connected with the connecting rod (11) after passing through the conical wheel (18).

6. A wrapping bag winding apparatus according to claim 5, wherein The surface of the conical wheel (18) is provided with an antiskid sleeve (20).

7. The wrapping bag winding apparatus according to claim 5, wherein The cylindrical wheel (17) is provided with a winding groove (21).

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