A pressurized belt wheel integrated mirror surface guide rail

Abstract

This utility model relates to the field of cigarette rolling machine technology and provides an integrated mirror-finish guide rail with a pressure roller, including a first splitting guide rail, a pressure roller assembly, and a second splitting guide rail. The first splitting guide rail includes a first guide rail body and a mounting plate. The pressure roller assembly includes a pressure roller, a first connecting rod, and a second connecting rod. One end of the first connecting rod is connected to the pressure roller, and the other end is connected to the second connecting rod. The first connecting rod is rotatably connected to the first splitting guide rail via a rotating shaft. The second connecting rod is connected to a weight control system. The second splitting guide rail is arranged opposite to the first splitting guide rail. The weight control system drives the second connecting rod to move up and down, which in turn drives the pressure roller to move up and down through the first connecting rod to press or release the suction belt. This utility model solves the problem in existing cigarette rolling equipment where the lack of dynamic control over the distance between the suction belt and the splitting blade leads to low tobacco trimming accuracy and unstable cigarette weight.

Description

Technical Field

[0001] This utility model applies to the field of cigarette machine technology, and in particular relates to an integrated mirror guide rail with a pressure pulley. Background Technology

[0002] In modern cigarette manufacturing equipment, precise control of cigarette weight is a core element in ensuring product quality stability. Current technology typically uses a cutting disc (leveler) to trim the tobacco bundle conveyed on the suction belt, adjusting the tobacco filling amount and thus controlling the cigarette weight. However, traditional devices generally lack the ability to actively adjust the relative distance between the suction belt and the cutting disc—the suction belt relies solely on a guide rail for passive guidance, its trajectory and tension are essentially fixed, and it cannot dynamically adjust the gap between itself and the cutting disc according to the actual weight requirements of the cigarette. Since the thickness of the tobacco bundle is directly affected by the distance between the suction belt and the cutting disc, and this distance is either unadjustable or slow to adjust in traditional structures, it is difficult to accurately match the tobacco trimming amount to the target weight. This is especially problematic when there are fluctuations in tobacco moisture content, flow rate, or negative pressure, easily leading to defects such as overweight cigarettes or "empty" cigarettes. Furthermore, existing systems lack a pressure roller assembly, causing the suction belt to bounce and loosen due to airflow disturbances or load changes during high-speed operation, further exacerbating the instability of the tobacco bundle position and preventing the cutting disc from effectively trimming under constant conditions. Meanwhile, the traditional splitting guide rail has a high surface roughness and high frictional resistance, which not only affects the integrity of the tobacco but also interferes with the smooth operation of the suction belt.

[0003] In order to solve the above-mentioned technical problems, this utility model designs an integrated mirror guide rail with a pressure pulley. Utility Model Content

[0004] This utility model provides an integrated mirror-finish guide rail with a pressure pulley, aiming to solve the problems in existing cigarette rolling equipment caused by the lack of dynamic control over the distance between the suction belt and the splitting blade, resulting in low tobacco trimming accuracy, unstable cigarette weight, and easy occurrence of hollow ends. The technical solution is as follows: An integrated mirror-finish guide rail with a pressure pulley includes a first chopping guide rail, a pressure pulley assembly, and a second chopping guide rail. The first chopping guide rail includes a first guide rail body and a mounting plate. The pressure pulley assembly includes a pressure pulley, a first connecting rod, and a second connecting rod. One end of the first connecting rod is connected to the pressure pulley, and the other end is connected to the second connecting rod. The first connecting rod is rotatably connected to the first chopping guide rail via a rotating shaft. The second connecting rod is connected to a weight control system. The second chopping guide rail is arranged opposite to the first chopping guide rail. The first chopping guide rail has a first receiving groove, and the second chopping guide rail has a second receiving groove. The first receiving groove and the second receiving groove together constitute a suction ribbon receiving groove for receiving suction ribbons. The weight control system drives the second connecting rod to move up and down, which in turn drives the pressure pulley to move up and down via the first connecting rod to press or release the suction ribbons.

[0005] Based on the above technical solution, a baffle is connected to the first chopping guide rail. The baffle extends downward to limit the degree of tilting of the end of the first connecting rod.

[0006] Preferably, the mounting plate is provided with a first limiting plate, and the first limiting plate has a sliding hole, in which the second connecting rod slides.

[0007] Preferably, a second limiting plate is provided on the mounting plate, and a spring is connected to the first connecting rod. The other end of the spring abuts against the second limiting plate. When the first connecting rod and the pressure roller descend, the spring is compressed.

[0008] Beneficial effects Compared with the prior art, the beneficial effects of this utility model are: 1. The pressure roller assembly is driven by a weight control system to adjust the gap between the suction belt and the splitting blade in real time, thereby controlling the amount of tobacco bundle trimming. This effectively solves the quality problems of excessively heavy or hollow cigarettes caused by fixed spacing or delayed response in traditional devices, and improves the consistency of cigarette weight.

[0009] 2. The first and second splitting guide rails are joined together to form a suction belt receiving groove, and combined with the mirror polished surface and pressure roller, the frictional resistance and mechanical damage are reduced, the tobacco shreds are prevented from getting stuck and broken, and the tobacco shred bundle is ensured to run densely and smoothly. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0011] Figure 1 : A schematic diagram of the structure of this utility model; Figure 2 : Exploded view of the structure of this utility model; Figure 3 : Exploded view of the structure of the first chopping guide rail of this utility model; Figure 4 : A schematic diagram of the structure of the first cleaving blade guide rail of this utility model; Figure 5 : A schematic diagram of the structure of the pressure roller assembly described in this utility model; Figure 6 : A schematic diagram of the structure of the second cleaver guide rail of this utility model; Figure 7 Installation diagram of this utility model; Figure 8 : Figure 7 Enlarged view of point A in the middle; Figure 9 : A schematic diagram showing the positions of the cleaver and the suction ribbon described in this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and examples: The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] like Figure 1 and Figure 2 As shown, a pressure pulley integrated mirror guide rail includes a first chopping guide rail 1, a pressure pulley assembly 2, and a second chopping guide rail 3.

[0016] like Figure 3 and Figure 4 As shown, the first cleaver guide rail 1 includes a first guide rail body 11 and a mounting plate 12. The mounting plate 12 is connected to the first guide rail body 11 by screws. The mounting plate 12 is prone to wear due to continuous friction with the suction ribbon and tobacco. With the adoption of a split structure, only the worn mounting plate 12 needs to be replaced, without disassembling the entire first cleaver guide rail 1, thus reducing maintenance costs and downtime.

[0017] By replacing the mounting plate 12 with different specifications (such as different groove widths or shapes) while retaining the main body 11 of the first guide rail, it can be quickly adapted to various cigarette specifications or equipment models, thus improving versatility.

[0018] like Figure 6 As shown, similarly, the second chopping guide rail 3 can also use the same split structure.

[0019] like Figure 5 As shown, the belt pressing roller assembly 2 includes a belt pressing roller 21, a first connecting rod 22 and a second connecting rod 23; one end of the first connecting rod 22 is connected to the belt pressing roller 21 and the other end is connected to the second connecting rod 23.

[0020] The first connecting rod 22 is rotatably connected to the first chopping blade guide rail 1 via a rotating shaft 24. The second connecting rod 23 is connected to the weight control system 5.

[0021] The first link 22 and the second link 23 constitute a lever transmission system. The second link 23 receives the up-and-down driving force from the weight control system 5 and converts the motion into the up-and-down swinging or lifting motion of the pressure pulley 21 through the first link.

[0022] Preferably, the rotating shaft 24 is positioned at the midpoint of the first connecting rod 22. When the rotating shaft is at the midpoint of the first connecting rod, the pressure roller 21 and the second connecting rod 23 are located on either side of the fulcrum, forming an approximately equal-arm lever structure. This ensures a good force transmission ratio between the input force from the second connecting rod 23 and the output force acting on the pressure roller 21, reducing unnecessary force amplification or attenuation and improving control accuracy and response linearity.

[0023] like Figure 4 , 7 As shown in Figure 8, the second chopping guide rail 3 is arranged opposite to the first chopping guide rail 1. The first chopping guide rail 1 has a first receiving groove 121, and the second chopping guide rail 3 has a second receiving groove 31. The first receiving groove 121 and the second receiving groove 31 together constitute a suction ribbon receiving groove for receiving the suction ribbon 4.

[0024] The cross-section of the suction ribbon receiving groove is rectangular or U-shaped, and the opening width matches the thickness of the suction ribbon 4. The rectangular groove provides four-sided constraint and precise positioning, making it suitable for high-speed models with extremely high stability requirements. The U-shaped groove provides bottom support and side guidance, facilitating the insertion and removal of the suction ribbon 4, balancing guidance and smooth operation.

[0025] The suction ribbon receiving groove formed by the two guide rails provides a stable channel for the suction ribbon 4 to be limited to the left and right, preventing it from shifting to the left or right or becoming loose in some areas due to airflow disturbance, negative pressure fluctuation or mechanical vibration during high-speed operation, and ensuring that the tobacco bundle is always on the preset trimming path.

[0026] The weight control system 5 drives the second link 23 to move up and down, and drives the pressure roller 21 to move up and down through the first link 22, so as to press or release the suction belt 4.

[0027] Specifically, the weight control system 5 drives the second link 23 to move up and down, causing the second link 23 to rotate, which in turn drives the pressure roller 21 to move up and down.

[0028] The weight control system 5 can be a servo motor and a displacement sensor. The rolled tobacco strip is equipped with a weight detection unit to measure the mass per unit length of the tobacco strip, compare it with the preset value of the target tobacco weight set by the user, calculate the deviation value, and then the servo motor receives the controller command to drive the lead screw, cam or other transmission mechanism to move the second connecting rod 23 up and down.

[0029] like Figure 9 As shown, it also includes a splitting blade 6, which is located below the first splitting blade guide rail 1 and the pressure roller assembly 2. The suction ribbon 4 adsorbs tobacco shreds by negative pressure.

[0030] The suction belt 4 is a ring-shaped breathable fabric belt, with its lower surface tightly attached to the suction groove of the negative pressure air chamber during operation. Under the action of negative pressure, the tobacco is adsorbed and stably attached to the lower surface of the suction belt 4, forming a continuous tobacco bundle. The pressure roller 21 is located above the suction belt 4, and by applying downward pressure, it makes the suction belt fit more tightly against the blade edge of the cleaver 6 below.

[0031] As the tobacco bundle moves closely along the guide rail surface at high speed, a rough surface will generate significant friction, causing the tobacco to be scraped, broken, or piled up. This increases the running resistance of the suction cable, making it prone to tension fluctuations or deviation.

[0032] To address the aforementioned issues, the alloy surfaces of the first and second cleaver guide rails 1 and 3 that come into contact with the tobacco bundle are mirror-polished surfaces with a surface roughness of less than 0.4 micrometers.

[0033] Mirror polishing makes the contact surface between the tobacco and the guide rail smooth, reducing the coefficient of friction and ensuring that the tobacco bundle passes through the guide rail area smoothly and continuously.

[0034] In another embodiment, the mounting plate 12 is provided with a first limiting plate 14, which has a sliding hole 141. The second connecting rod 23 slides in the sliding hole 141. The sliding hole 141 serves as a guide channel, constraining the movement direction of the second connecting rod and effectively preventing it from swaying, twisting, or lateral shaking during operation. The first limiting plate 14 also serves as a dustproof function.

[0035] In another embodiment, a second limiting plate 15 is provided on the mounting plate 12, and a spring 25 is connected to the first connecting rod 22. The other end of the spring 25 abuts against the second limiting plate 15. When the first connecting rod 22 and the pressure roller 21 descend, the spring 25 is compressed.

[0036] In another embodiment, a baffle 13 is connected to the first chopping guide rail 1, the baffle 13 extending downward to limit the degree of tilting of the end of the first connecting rod 22.

[0037] One end of the first connecting rod 22 is connected to the pressure roller 21. Under the influence of spring reset or external vibration, the end of the pressure roller 21 may tilt upward excessively due to inertia or rebound force. The baffle 13 acts as a mechanical limiter, physically blocking the upward limit position of the connecting rod end, preventing the pressure roller from leaving the working area or losing effective contact with the suction belt, and ensuring that the pressing action is always within a controllable range.

[0038] The suction belt 4 is usually made of polymer fiber fabric with a smooth surface. If the pressure roller 21 is made of bare metal (such as steel or alloy), it is easy for relative sliding to occur between it and the suction belt 4 during high-speed operation or negative pressure fluctuations, resulting in uncontrolled tension and displacement of the tobacco bundle position.

[0039] To address the aforementioned issues, preferably, the outer circumferential surface of the pressure roller 21 is coated with a layer of polyurethane or fluororubber. Polyurethane or fluororubber has a high coefficient of friction and good elasticity, enabling effective contact with the suction belt 4 surface, ensuring reliable transmission of the pressing action and preventing slippage.

[0040] During operation, under the action of the negative pressure air chamber, the suction ribbon 4 stably adsorbs the tobacco shreds onto the lower surface of the suction ribbon 4 and moves along the guide rail direction. The tobacco shred bundle is confined in the suction ribbon receiving groove formed by the first split guide rail 1 and the second split guide rail 3.

[0041] After being rolled into shape, the cigarette stick passes through a weight detection device (such as a microwave sensor) to measure the actual weight of the cigarette in real time and transmit the data to the controller. The controller compares the measured weight with a preset target value. If the cigarette is too heavy, the trimming amount needs to be increased, and a command is sent to the pressure roller 21 to press down. Conversely, if the cigarette is too light (or there is a risk of empty ends), the trimming amount needs to be reduced, and a command is sent to the pressure roller 21 to lift up.

[0042] The weight control system 5 is connected to the weight control bridge plate 6. The second link 23 is mounted on the weight control bridge plate 6. The weight control system 5 drives the weight control bridge plate 6 to move up and down, thereby causing the second link 23 to move up and down. The second link drives the first link 22 to rotate around the rotating shaft 24. The pressure roller 21 connected to the other end of the first link moves up and down accordingly, thereby pressing or releasing the suction belt 4.

[0043] The pressure roller 21 presses down, causing the suction ribbon 4 to be pushed downwards. The lower surface of the suction ribbon 4 is closer to the splitting blade 6, and the tobacco is trimmed more, thus making the cigarette lighter.

[0044] The pressure roller 21 is raised, causing the suction belt to move away from the splitting blade 6, increasing the distance between the tobacco and the splitting blade 6, reducing the amount of tobacco trimming, and thus making the cigarette heavier.

[0045] Guided by the low friction of the mirror-finished guide rail, the cleaver 6 achieves efficient trimming, ultimately forming a cigarette with stable weight.

[0046] It should be noted that the weight control system, the chopping knife, and the suction ribbon in this embodiment are all general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0047] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A pressure-loaded pulley integrated mirror guide rail, characterized in that: It includes a first chopping guide rail (1), a pressure roller assembly (2), and a second chopping guide rail (3); the first chopping guide rail (1) includes a first guide rail body (11) and a mounting plate (12); the pressure roller assembly (2) includes a pressure roller (21), a first connecting rod (22), and a second connecting rod (23); one end of the first connecting rod (22) is connected to the pressure roller (21), and the other end is connected to the second connecting rod (23); the first connecting rod (22) is rotatably connected to the first chopping guide rail (1) through a rotating shaft (24); the second connecting rod (23) is connected to the weight control system ( 5) Connection; The second chopping guide rail (3) is set opposite to the first chopping guide rail (1). The first chopping guide rail (1) is provided with a first receiving groove (121), and the second chopping guide rail (3) is provided with a second receiving groove (31). The first receiving groove (121) and the second receiving groove (31) together constitute a suction ribbon receiving groove for receiving the suction ribbon (4); The weight control system (5) drives the second connecting rod (23) to move up and down, and drives the pressure roller (21) to move up and down through the first connecting rod (22) to press or release the suction ribbon (4).

2. The pressure-loaded pulley integrated mirror guide rail according to claim 1, characterized in that: A baffle (13) is connected to the first chopping guide rail (1), and the baffle (13) extends downward to limit the degree of tilting of the end of the first connecting rod (22).

3. The pressure-loaded pulley integrated mirror guide rail according to claim 2, characterized in that: The mounting plate (12) is provided with a first limiting plate (14), and the first limiting plate (14) is provided with a sliding hole (141), and the second connecting rod (23) slides in the sliding hole (141).

4. The pressure pulley integrated mirror guide rail according to claim 1, characterized in that: The mounting plate (12) is provided with a second limiting plate (15), and a spring (25) is connected to the first connecting rod (22). The other end of the spring (25) abuts against the second limiting plate (15). When the first connecting rod (22) and the pressure roller (21) descend, the spring (25) is compressed.

5. The pressure-loaded pulley integrated mirror guide rail according to claim 4, characterized in that: The cross-section of the suction ribbon receiving groove is rectangular or U-shaped, and the opening width matches the thickness of the suction ribbon (4).

6. The pressure pulley integrated mirror guide rail according to claim 1, characterized in that: The pivot (24) is located at the midpoint of the first link (22).

7. The pressure pulley integrated mirror guide rail according to claim 6, characterized in that: The weight control system (5) drives the second link (23) to move up and down, causing the second link (23) to move and drive the pressure roller (21) to move up and down.

8. The pressure pulley integrated mirror guide rail according to claim 1, characterized in that: It also includes a splitting blade (6) positioned below the first splitting blade guide rail (1) and the pressure roller assembly (2), wherein the suction ribbon (4) adsorbs tobacco shreds by negative pressure.

9. The pressure pulley integrated mirror guide rail according to claim 1, characterized in that: The alloy surfaces of the first chopping guide rail (1) and the second chopping guide rail (3) that come into contact with the tobacco bundle are mirror-polished surfaces with a surface roughness of less than 0.4 micrometers.

10. The pressure pulley integrated mirror guide rail according to claim 1, characterized in that: The outer circumferential surface of the pressure roller (21) is covered with a layer of polyurethane or fluororubber material.

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