Pulling line braking device of cigarette transparent paper packaging machine and cigarette transparent paper packaging machine

Abstract

The application relates to a cigarette transparent paper packaging machine and a pull line braking device thereof. The pull line braking device of the cigarette transparent paper packaging machine comprises a rack with a mounting plane, a pull line reel rotatably mounted on the mounting plane, a brake wheel fixed to the pull line reel and synchronously rotating with the pull line reel, a swing rod rotatably connected to the mounting plane and capable of conveying the pull line transmitted by the pull line reel, a flexible belt arranged on the brake wheel and having a first end and a second end in the width direction of the rack, a first adjusting mechanism mounted on the rack and connected with the first end and capable of rotating on the rack, and a second adjusting mechanism mounted on the rack and connected with the swing rod, arranged between the first adjusting mechanism and the second end in the width direction of the rack and capable of rotating on the rack. The application can adapt to flexible belts with different lengths and has a good braking effect on the brake wheel.

Description

Technical Field

[0001] This application relates to the field of cigarette packaging technology, and in particular to a pull-wire braking device for a cigarette transparent paper packaging machine and the cigarette transparent paper packaging machine. Background Technology

[0002] During the cigarette packaging production process, when the cigarette pack is wrapped with transparent paper, a pull-string structure needs to be set on the transparent paper to make the transparent paper easy to open. The pull-string structure needs to be precisely braked to wrap evenly on the transparent paper.

[0003] In existing technology, the braking device for a pull cable includes a pull cable drum, a brake disc, a rocker arm, and a flexible belt. The brake disc is coaxially mounted with the pull cable drum. One end of the pull cable is wound around the pull cable drum, and the other end is connected to the feed pulley via a pressure roller on the rocker arm for output. The flexible belt is wound around the brake disc and generates friction between it and the brake disc. It can brake / release the brake disc in response to changes in the position of the rocker arm, thereby braking / releasing the pull cable wound on the pull cable drum. However, in this type of structure, the wrap angle between the flexible belt and the brake disc is fixed, and the contact area between the flexible belt and the brake disc cannot be adjusted. Therefore, it is impossible to adjust the braking effect of the flexible belt on the brake disc according to requirements. Utility Model Content

[0004] Therefore, it is necessary to provide a pull-line braking device for a cigarette transparent paper packaging machine that can solve the above problems.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0006] A drawstring braking device for a cigarette transparent paper packaging machine, used for braking the drawstring roll, the drawstring braking device of the cigarette transparent paper packaging machine comprising:

[0007] The frame has a mounting surface;

[0008] A wire reel, rotatably mounted on the mounting plane and used to wind up the wire;

[0009] The brake disc is fixed to the cable reel and rotates synchronously with the cable reel.

[0010] The swing arm is rotatably connected to the mounting plane and is capable of conveying the pull wire transmitted by the pull wire reel;

[0011] A flexible belt is laid on a portion of the outer peripheral surface of the brake disc and fits against the outer peripheral surface of the brake disc, and has a first end and a second end that are suspended relative to the brake disc in the width direction of the frame;

[0012] A first adjustment mechanism is installed on the frame and connected to the first end. The first adjustment mechanism can rotate and adjust on the frame and change the contact area between the flexible belt and the outer peripheral surface of the brake disc to adjust the wrap angle between the flexible belt and the brake disc.

[0013] The second adjustment mechanism is installed on the frame and linked to the swing arm. The second adjustment mechanism is spaced apart from the first adjustment mechanism in the width direction of the frame and connected to the second end. The second adjustment mechanism can rotate and adjust on the frame, and change the contact area between the flexible belt and the outer peripheral surface of the brake disc, so as to adjust the wrap angle between the flexible belt and the brake disc.

[0014] It is understood that this application sets up a first adjustment mechanism and a second adjustment mechanism to connect the first end and the second end of the flexible belt respectively. By adjusting the angle of the first adjustment mechanism and the second adjustment mechanism, the wrap angle between the flexible belt and the brake disc can be adjusted. Therefore, during use, the wrap angle can be adjusted according to the needs to adjust the contact area between the flexible belt and the brake disc, thereby enabling precise adjustment of the braking force of the flexible belt on the brake disc according to the needs, and improving the flexibility of the pull-wire braking device of the cigarette transparent paper packaging machine.

[0015] In one embodiment, the first adjustment mechanism and the second adjustment mechanism cooperate with each other to enable the wrap angle between the flexible belt and the brake disc to vary between 120° and 245°.

[0016] In one embodiment, the first adjusting mechanism includes a first rotating member and a first connecting frame. The first rotating member is mounted on the mounting plane and is capable of circumferential rotation on the mounting plane. The first connecting frame is connected to the first rotating member and is fixedly connected to the first end.

[0017] In one embodiment, the first connecting frame extends along a first direction, which is parallel to the mounting plane and at an angle to the height direction of the frame;

[0018] The first connecting frame is movable relative to the first rotating member in the first direction to adjust the position between the first connecting frame and the first rotating member.

[0019] In one embodiment, the first connecting frame has an adjustment hole extending along a first direction, and the first rotating member has a first connecting hole;

[0020] The first adjustment mechanism further includes a locking member, one end of which passes through the adjustment hole and is connected to the first connection hole; wherein the locking member is movable relative to the first connecting frame along the adjustment hole.

[0021] In one embodiment, the first adjusting mechanism further includes a push rod, and a second connecting hole is provided on the first connecting frame along a first direction;

[0022] The push rod extends along the first direction, and one end of the push rod passes through the second connecting hole and is connected to the first rotating member, and can push the first rotating member to move relative to the first connecting frame along the first direction.

[0023] In one embodiment, the first rotating member has a groove at one end facing the first connecting member, the groove extends along a first direction, and a portion of the first connecting frame is located in the groove and slides in cooperation with the groove.

[0024] In one embodiment, the second adjustment mechanism includes a second rotating member, a second connecting frame, and a connecting block, wherein the connecting block and the swing arm are rotatably mounted on the same fixed axis and move synchronously.

[0025] The second rotating component is mounted on the connecting block, one end of the second connecting bracket is mounted on the second rotating component, and the other end is connected to the second end.

[0026] In one embodiment, the second rotating member is rotatably mounted on the connecting block and is capable of circumferential rotation relative to the mounting plane.

[0027] This application also provides the following technical solutions:

[0028] A cigarette transparent paper packaging machine includes a pull-line braking device as described in any of the above embodiments.

[0029] Compared with the prior art, the drawstring braking device of the cigarette transparent paper packaging machine, by setting a first adjustment mechanism and a second adjustment mechanism respectively connecting the first and second ends of the flexible belt, allows for adjustment of the wrap angle between the flexible belt and the brake disc by adjusting the angle of the first and second adjustment mechanisms. Therefore, during use, the wrap angle can be adjusted as needed to adjust the contact area between the flexible belt and the brake disc, thereby enabling precise adjustment of the braking force of the flexible belt on the brake disc and improving the flexibility of the drawstring braking device of the cigarette transparent paper packaging machine. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the drawstring braking device of a cigarette transparent paper packaging machine provided in this application.

[0032] Figure 2 A schematic diagram of the drawstring braking device of a cigarette transparent paper packaging machine, provided for another perspective in this application.

[0033] Figure 3 An exploded view of the first regulating mechanism provided for this application.

[0034] Figure 4 An exploded view of the second regulating mechanism provided for this application.

[0035] Figure 5 This is a schematic diagram of the braking state of the pull-wire braking device of the cigarette transparent paper packaging machine of this application.

[0036] Figure 6 This is a schematic diagram showing the release of the brake device of the cigarette transparent paper packaging machine of this application.

[0037] The component labels are as follows:

[0038] 100. Wire-pulling brake device for a cigarette transparent paper packaging machine; 10. Frame; 11. Mounting plane; 20. Wire-pulling drum; 30. Brake disc; 40. Swing rod; 41. Fixed shaft; 42. Sleeve; 43. Pressure roller; 50. Flexible belt; 51. First end; 52. Second end; 60. First adjusting mechanism; 61. First rotating component; 611. Screw; 612. Slide groove; 613. First connecting hole; 62. First connecting frame; 621. Positioning groove; 622. Adjusting hole; 623. Second connecting hole; 63. Locking component; 64. Push rod; 70. Second adjusting mechanism; 71. Second rotating component; 72. Second connecting frame; 721. Second connecting part; 722. Extension part; 723. Third connecting part; 73. Connecting block;

[0039] 200. Cigarette transparent paper packaging machine; 201. Feeder roller. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0045] Please see Figures 1 to 6This application provides a drawstring braking device 100 for a cigarette transparent paper packaging machine. This drawstring braking device 100 is applied in a cigarette transparent paper packaging machine 200 and is used to brake the drawstring roll. The cigarette transparent paper packaging machine 200 is also equipped with a feed roller 201. The drawstring roll is wound around the drawstring braking device 100, and one end passes through the feed roller 201 for output.

[0046] Specifically, the drawstring braking device 100 of the cigarette transparent paper packaging machine includes a frame 10, a drawstring drum 20, a brake disc 30, a swing arm 40, a flexible belt 50, a first adjustment mechanism 60, and a second adjustment mechanism 70. The frame 10 has a mounting plane 11. The drawstring drum 20 is rotatably mounted on the mounting plane 11 and is used to wind up the drawstring. The brake disc 30 is fixed to the drawstring drum 20 and rotates synchronously with the drawstring drum 20. The swing arm 40 is rotatably connected to the mounting plane 11 and can transport the drawstring transmitted by the drawstring drum 20. The flexible belt 50 is laid on part of the outer peripheral surface of the brake disc 30 and fits against the outer peripheral surface of the brake disc 30, and has a first end 51 suspended relative to the brake disc 30 in the width direction of the frame 10. The first adjustment mechanism 60 is mounted on the frame 10 and connected to the first end 51. The first adjustment mechanism 60 can be rotated and adjusted on the frame 10, and changes the contact area between the flexible belt 50 and the outer peripheral surface of the brake disc 30, so as to adjust the wrap angle between the flexible belt 50 and the brake disc 30. The second adjustment mechanism 70 is mounted on the frame 10 and linked with the swing arm 40. The second adjustment mechanism 70 is spaced apart from the first adjustment mechanism 60 in the width direction of the frame 10 and connected to the second end 52. The second adjustment mechanism 70 can be rotated and adjusted on the frame 10, and changes the contact area between the flexible belt 50 and the outer peripheral surface of the brake disc 30, so as to adjust the wrap angle between the flexible belt 50 and the brake disc 30.

[0047] In existing technology, a flexible belt is wrapped around the brake disc and fixed to both sides of the disc, with one end fixed to a lever. After the flexible belt is fixed, its wrap angle with the brake disc is fixed, thus the contact area between the flexible belt and the brake disc cannot be adjusted. Consequently, the braking force exerted by the flexible belt on the brake disc cannot be adjusted according to requirements, resulting in poor flexibility of the braking device. Furthermore, this structure has strict requirements on the length of the flexible belt. If the flexible belt is too long, it will not respond promptly to the lever's braking action on the brake disc, failing to achieve a good braking effect. If the flexible belt is too short, it will not separate from the brake disc in time when releasing the brake. Both of these factors affect the stability and reliability of the cable conveyor. However, in actual production, factors such as errors in the flexible belt's manufacturing process and its elongation after long-term use can cause the flexible belt length to fail to meet usage requirements. Therefore, in such cases, it is necessary to replace the flexible belt with a new one or cut it to ensure the braking effect of the brake disc, thereby increasing the complexity and cost of installation and maintenance. This application establishes a first adjustment mechanism 60 and a second adjustment mechanism 70, respectively connecting the first end 51 and the second end 52 of the flexible belt 50. By adjusting the angles of the first adjustment mechanism 60 and the second adjustment mechanism 70, the wrap angle between the flexible belt 50 and the brake disc 30 can be adjusted. Therefore, during use, the wrap angle can be adjusted as needed to adjust the contact area between the flexible belt 50 and the brake disc 30, thereby precisely adjusting the braking force of the flexible belt 50 on the brake disc 30 and improving the flexibility of the drawstring braking device 100 of the cigarette transparent paper packaging machine. Simultaneously, by adjusting the angles of the first adjustment mechanism 60 and the second adjustment mechanism 70, flexible belts 50 of different lengths can form good contact with the brake disc 30, allowing the flexible belt 50 to respond promptly to changes in the position of the swing arm 40 to brake / release the brake disc 30, thus braking / releasing the drawstring wound on the drawstring drum 20. Therefore, it can accommodate flexible belts 50 of different lengths, reducing the complexity and cost of installation and maintenance.

[0048] like Figure 1 and Figure 2 As shown, the rocker arm 40 is mounted on the fixed shaft 41, and the fixed shaft 41 is also equipped with a sleeve 42. The sleeve 42 is rotatably connected to the fixed shaft 41. The rocker arm 40 is fixedly connected to one side of the sleeve 42, and the second adjusting mechanism 70 is fixedly connected to the other side of the sleeve 42. This allows the rocker arm 40 to drive the second adjusting mechanism 70 to move synchronously when it moves.

[0049] Furthermore, a pressure roller 43 is provided on the swing arm 40. The cable is alternately wound between the pressure roller 43 and the feed pulley 201. Thus, when the cable needs to be braked, the pressure roller 43 is released, thereby controlling the swing arm 40 to fall. At the same time, the second adjusting mechanism 70 is rotated, and the flexible belt 50 contacts the brake disc 30, braking the brake disc 30. When the cable needs to be released from braking, the pressure roller 43 controls the swing arm 40 to rise, causing the flexible belt 50 to release the brake disc 30, thereby releasing the brake. For specific braking and releasing states, please refer to [reference needed]. Figure 5 and Figure 6 .

[0050] In one embodiment, the flexible belt 50 is configured as a cowhide belt, a rubber belt, etc. In this embodiment, the flexible belt 50 is configured as a rubber belt. Specifically, the flexible belt 50 is a combination of a high wear-resistant special synthetic rubber as the friction layer and a high-strength nylon sheet as the skeleton layer. The flexible belt 50 made of this material has a long service life, stable dimensions, and low cost, and is suitable for braking the brake disc 30 in this application.

[0051] In one embodiment, the first adjusting mechanism 60 and the second adjusting mechanism 70 cooperate to allow the wrap angle between the flexible belt 50 and the brake disc 30 to vary between 120° and 245°. The wrap angle between the flexible belt 50 and the brake disc 30 represents the contact area between them, thus reflecting the magnitude of the frictional force between the flexible belt 50 and the brake disc 30. In other words, this application has a wider range of applications and greater adaptability.

[0052] Here, the first adjustment mechanism 60 and the second adjustment mechanism 70 cooperate with each other, so that the wrap angle between the flexible belt 50 and the brake disc 30 can be 120°, 130°, 140°, 150°, 160°, 170°, 180°, 190°, 210°, 220°, 230°, 240°, or 245°.

[0053] Furthermore, with a brake disc diameter of 30 mm: φ 刹 =140mm; the minimum diameter φ of the wire reel is taken as 20mm. 拉线卷筒20 =24mm; taking the friction coefficient between the flexible belt 50 and the brake disc 30 as μ=0.5, and the pull-line traction roller as a fan shape with a fan-shaped surface of 230°, the gravitational force on the swing arm 40 is 2N; a qualified cigarette stick requires a pull line of 295-300mm, and the pull-line braking device 100 of the cigarette transparent paper packaging machine must stably supply qualified pull lines and also need to respond quickly to achieve the braking effect (to prevent the pull line from unwinding too quickly and causing entanglement).

[0054] When the equipment operates at a speed of 40 cigarettes / min, the production speed of one cigarette is:

[0055] V生产 = =1.5s / piece;

[0056] When conveying the transparent paper and the pull string, one qualified transparent paper structure with the pull string is conveyed with one revolution. This is a periodic intermittent motion. When the production speed is 1.5s / piece, the working time and the interval are:

[0057] T 工 =(360°-130°) / (360°)×1.5s≈0.96s;

[0058] T 歇 =1.5s - 0.96s = 0.54s;

[0059] That is, braking is required within 0.54 seconds:

[0060] v 拉线 =300mm / 0.96s=ωr (ω: angular velocity; v: linear velocity)

[0061] ω 拉线卷筒 =v / r=(300mm / 0.96s) / 12mm≈26.04rad / s;

[0062] Since the cable reel 20 rotates coaxially with the brake disc 30, therefore ω 拉线卷筒 =ω 刹车 =26.04 rad / s;

[0063] Combining the braking torque formula, Euler's formula, and tension difference:

[0064]

[0065] F1-F2=2N;

[0066] Where F1 and F2 are the tensions at both ends of the belt, e is the natural constant (e≈2.718), θ is the wrap angle in radians, μ is the coefficient of friction, and R is the radius of the brake disc.

[0067] Therefore: Braking torque:

[0068] ;

[0069] Tangential braking torque:

[0070] :

[0071] Pulling the lever upwards by 40 degrees requires a force of 0.5 N. When θ = 120°,

[0072] ;

[0073] Therefore, at θ=120°, the braking effect can be achieved within the intermittent time, which is sufficient to meet the usage requirements. When the wrap angle is greater than 120°, the tangential braking torque is greater, thus also meeting the requirements.

[0074] like Figure 1 and Figure 3 As shown, the first adjustment mechanism 60 includes a first rotating member 61 and a first connecting frame 62. The first rotating member 61 is mounted on the mounting plane 11 and can rotate circumferentially on the mounting plane 11. The first connecting frame 62 is connected to the first rotating member 61 and is fixedly connected to the first end 51. Thus, by setting the first rotating member 61 and the first connecting frame 62, the first rotating member 61 can rotate circumferentially relative to the mounting plane 11 to adjust the setting direction of the first connecting frame 62, thereby changing the connection position of the first end 51 and altering the wrap angle between the flexible belt 50 and the brake disc 30.

[0075] In this embodiment, a screw 611 is provided on the first rotating component 61. The screw 611 is threadedly connected to the frame 10 and fastened with a nut. When in use, the nut is tightened, and when the first rotating frame needs to rotate, the nut is loosened to adjust the rotation angle of the first rotating component 61. However, the first rotating component 61 can also be fastened to the frame 10 using bolts or clamping rings.

[0076] In one embodiment, the first rotating member 61 has a groove 612 at one end facing the first connecting member. The groove 612 extends along the first direction x, and the first connecting frame 62 is partially located within the groove 612 and slides in cooperation with it. Thus, the groove 612 can limit the movement of the first connecting frame 62 along the first direction x, preventing the flexible belt 50 from shifting due to the first connecting frame 62.

[0077] In one embodiment, the first connecting frame 62 extends along a first direction x, and the first direction x is parallel to the mounting plane 11 and is angled to the height direction of the frame 10; wherein, the first connecting frame 62 is movable relative to the first rotating member 61 in the first direction x to adjust the position between the first connecting frame 62 and the first rotating member 61.

[0078] In one embodiment, a positioning groove 621 is provided on the first connecting frame 62, and the first end 51 of the flexible belt 50 is accommodated in the positioning groove 621 so that the first end 51 of the flexible belt 50 can follow the first connecting frame 62 to move along the first direction x without deviation, thereby ensuring good contact between the flexible belt 50 and the brake disc 30.

[0079] In one embodiment, the first connecting frame 62 has an adjustment hole 622 extending along the first direction x, and the first rotating member 61 has a first connecting hole 613. The first adjustment mechanism 60 further includes a locking member 63, one end of which passes through the adjustment hole 622 and is connected to the first connecting hole 613. The locking member 63 is movable relative to the first connecting frame 62 along the adjustment hole 622. Thus, by providing the adjustment hole 622, the first connecting hole 613, and the locking member 63, the locking member 63 can pass through the adjustment hole 622 and connect to the first connecting hole 613 for locking. In actual use, tightening the locking member 63 can fix the relative position of the first connecting frame 62 and the first rotating member 61, and loosening the locking member 63 to move its position within the adjustment hole 622 can allow the first connecting frame 62 to move relative to the first rotating member 61 in the first direction x.

[0080] Preferably, the adjustment hole 622 is configured as an elongated hole along the first direction x. In this way, by configuring the adjustment hole 622 as an elongated hole, it can also guide the movement of the first connecting bracket 62 along the first direction x.

[0081] In this embodiment, the locking member 63 is configured as a stud, and the stud is threadedly connected to the first connecting hole 613.

[0082] In one embodiment, the first adjustment mechanism 60 further includes a push rod 64. A second connection hole 623 is provided on the first connecting frame 62 along the first direction x. The push rod 64 extends along the first direction x, and one end of the push rod 64 passes through the second connection hole 623 and is connected to the first rotating member 61, and can push the first rotating member 61 to move relative to the first connecting frame 62 along the first direction x.

[0083] Furthermore, the second connecting hole 623 is configured as a threaded hole, and the push rod 64 is configured as a threaded rod. In this way, through the helical engagement of the threaded rod and the threaded hole, the displacement of the push rod 64 along the first direction x can be precisely controlled in units of pitch, thereby achieving fine adjustment of the pushing distance of the first rotating member 61.

[0084] In this embodiment, the first connecting frame 62 is configured in an "L" shape, with the positioning groove 621 and the adjustment hole 622 located on the long side, and the second connecting hole 623 located on the short side. One side of the first rotating member 61 rests against the long side, and a sliding groove 612 is formed on this side, with a first connecting hole 613 at the bottom of the sliding groove 612. The side adjacent to this side rests against the short side and is connected to the push rod 64. This arrangement makes the adjustment structure of the first rotating member 61 and the first connecting frame 62 compact and tightly fitted, which can improve space utilization while achieving stable adjustment.

[0085] In one embodiment, the second adjusting mechanism 70 includes a second rotating member 71, a second connecting frame 72, and a connecting block 73. The connecting block 73 and the rocker arm 40 are rotatably mounted on the same fixed shaft 41 and move synchronously. The second rotating member 71 is mounted on the connecting block 73, and one end of the second connecting frame 72 is mounted on the second rotating member 71, while the other end is connected to the second end 52. Of course, this is not the only embodiment. In other embodiments, the connecting block 73 and the rocker arm 40 can be connected in other ways, as long as the connecting block 73 can rotate in response to the movement of the rocker arm 40. For example, the connecting block 73 can also be disposed on the rocker arm 40.

[0086] Here, the connecting block 73 serves to link the rocker arm 40 and the second rotating component 71, and can therefore be replaced by a connecting rod, connecting plate, cam, or other structures.

[0087] In one embodiment, the second rotating member 71 is rotatably mounted on the connecting block 73 and is capable of circumferential rotation relative to the mounting plane 11. Thus, the position of the second connecting frame 72 can be adjusted by adjusting the angle of the second rotating member 71, thereby controlling the wrap angle between the flexible belt 50 and the brake disc 30.

[0088] Here, the second rotating component 71 is rotatably mounted on the connecting block 73. The specific installation method is the same as that of the first rotating component 61, and will not be described in detail here.

[0089] like Figure 2 and Figure 4 As shown, the second connecting frame 72 has a second connecting portion 721, an extension portion 722, and a third connecting portion 723. The second connecting portion 721 is connected and limited to the second end 52, and is connected to the third connecting portion 723 via the extension portion 722. The third connecting portion 723 is connected to the second rotating member 71. Here, the third connecting portion 723 and the second rotating member 71 are fixedly connected by means of pins, screws, or clips. To prevent the second connecting frame 72 from rotating relative to the second connecting portion 721, multiple pins, screws, or clips should be provided.

[0090] In this embodiment, the third connecting part 723 and the second rotating part 71 are connected by two screws, which can reduce assembly costs while ensuring that the position between the second connecting frame 72 and the second connecting part 721 is relatively stable.

[0091] Preferably, the width of the third connecting part 723 is smaller than that of the second connecting part 721. The smaller width of the third connecting part 723 can avoid the structure of the swing rod 40 and the connecting block 73, while the larger width of the second connecting part 721 can be stably connected to the second end 52 of the flexible belt 50.

[0092] In one embodiment, the length of the extension 722 is B, where 55mm ≥ B ≥ 45mm. For example, the length of the extension 722 can be 45mm, 50mm, 55mm, etc. By providing the extension 722, the second connecting part 721 and the second end 52 of the flexible belt 50 can be made more sensitive to the movement of the rocker arm 40, thereby enabling the flexible belt 50 to quickly respond to the movement of the rocker arm 40 to brake the brake disc 30 and enhance the braking effect of the brake disc 30.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A drawstring braking device for a cigarette transparent paper packaging machine, used for braking the drawstring roll, characterized in that, The drawstring braking device (100) of the cigarette transparent paper packaging machine includes: The frame (10) has a mounting surface (11); A wire reel (20) is rotatably mounted on the mounting plane (11) and used to wind up the wire; The brake disc (30) is fixed to the cable reel (20) and rotates synchronously with the cable reel (20). The swing arm (40) is rotatably connected to the mounting plane (11) and is capable of conveying the pull wire transmitted by the pull wire reel (20); A flexible belt (50) is laid on part of the outer peripheral surface of the brake disc (30) and fits against the outer peripheral surface of the brake disc (30), and has a first end (51) and a second end (52) suspended relative to the brake disc (30) in the width direction of the frame (10). The first adjustment mechanism (60) is installed on the frame (10) and connected to the first end (51). The first adjustment mechanism (60) can rotate and adjust on the frame (10) and change the contact area between the flexible belt (50) and the outer peripheral surface of the brake disc (30) to adjust the wrap angle between the flexible belt (50) and the brake disc (30). The second adjustment mechanism (70) is installed on the frame (10) and linked with the swing arm (40). The second adjustment mechanism (70) is spaced apart from the first adjustment mechanism (60) in the width direction of the frame (10) and connected to the second end (52). The second adjustment mechanism (70) can rotate and adjust on the frame (10) and change the contact area between the flexible belt (50) and the outer peripheral surface of the brake disc (30) to adjust the wrap angle between the flexible belt (50) and the brake disc (30).

2. The drawstring braking device of the cigarette transparent paper packaging machine according to claim 1, characterized in that, The first adjustment mechanism (60) and the second adjustment mechanism (70) cooperate with each other to make the wrap angle between the flexible belt (50) and the brake disc (30) vary between 120° and 245°.

3. The drawstring braking device of the cigarette transparent paper packaging machine according to claim 1, characterized in that, The first adjustment mechanism (60) includes a first rotating member (61) and a first connecting frame (62). The first rotating member (61) is mounted on the mounting plane (11) and can rotate circumferentially on the mounting plane (11). The first connecting frame (62) is connected to the first rotating member (61) and is fixedly connected to the first end (51).

4. The drawstring braking device of the cigarette transparent paper packaging machine according to claim 3, characterized in that, The first connecting frame (62) extends along a first direction, which is parallel to the mounting plane (11) and is angled to the height direction of the frame (10); The first connecting frame (62) is movable relative to the first rotating member (61) in the first direction to adjust the position between the first connecting frame (62) and the first rotating member (61).

5. The drawstring braking device of the cigarette transparent paper packaging machine according to claim 4, characterized in that, The first connecting frame (62) has an adjustment hole (622) extending along the first direction, and the first rotating member (61) has a first connecting hole (613). The first adjustment mechanism (60) further includes a locking member (63), one end of which passes through the adjustment hole (622) and is connected to the first connection hole (613); wherein the locking member (63) is capable of moving relative to the first connecting frame (62) along the adjustment hole (622).

6. The drawstring braking device of the cigarette transparent paper packaging machine according to claim 5, characterized in that, The first adjustment mechanism (60) also includes a push rod (64), and a second connection hole (623) is provided on the first connecting frame (62) along the first direction. The push rod (64) extends along the first direction, and one end of the push rod (64) passes through the second connecting hole (623) and is connected to the first rotating member (61), and can push the first rotating member (61) to move relative to the first connecting frame (62) along the first direction.

7. The drawstring braking device of the cigarette transparent paper packaging machine according to claim 5, characterized in that, The first rotating member (61) has a groove (612) at one end facing the first connecting frame (62). The groove (612) extends along a first direction, and a portion of the first connecting frame (62) is located in the groove (612) and slides in cooperation with the groove (612).

8. The drawstring braking device of the cigarette transparent paper packaging machine according to any one of claims 1 to 7, characterized in that, The second adjustment mechanism (70) includes a second rotating component (71), a second connecting frame (72), and a connecting block (73). The connecting block (73) and the swing rod (40) are rotatably mounted on the same fixed shaft (41) and move synchronously. The second rotating component (71) is mounted on the connecting block (73), one end of the second connecting frame (72) is mounted on the second rotating component (71), and the other end is connected to the second end (52).

9. The drawstring braking device of the cigarette transparent paper packaging machine according to claim 8, characterized in that, The second rotating member (71) is rotatably mounted on the connecting block (73) and is capable of circumferential rotation relative to the mounting plane (11).

10. A cigarette paper packaging machine, characterized in that, Includes a drawstring braking device (100) for a cigarette transparent paper packaging machine as described in any one of claims 1-9.

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