Tensioning device for cut tobacco suction belt of air suction chamber of cigarette making machine

Abstract

The invention discloses a tensioning device for a cut tobacco suction belt of an air suction chamber of a cigarette making machine, and relates to the technical field of tobacco processing equipment. The air cylinder body is arranged on the side, away from the tensioning wheel, of the movable installation base and provided with a main piston rod and a guide rod side by side in the length direction. The main piston rod and the guide rod are arranged on one side of the air cylinder body and connected with the movable mounting base provided with the tensioning wheel, so that a multi-rod cooperative driving and guiding structure is formed; according to the multi-rod collaborative layout, driving force is evenly transmitted, a collaborative stress structure is formed through the guide rods and the main piston rod, reliable lateral supporting is provided for the main piston rod, so that bending moment borne by the main piston rod and all the rods in the driving process is restrained, the stability of the movable installation base in axial translation along the main piston rod and the guide rods is improved, and the service life of the movable installation base is prolonged. Therefore, shaking and tension fluctuation of the tobacco suction belt in high-speed operation are reduced, the uniformity of tobacco tow adsorption on the belt surface is improved, and the quality of cigarettes is stabilized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tobacco processing equipment, in particular to a tensioning device for a suction tape of a suction chamber of a cigarette making machine. BACKGROUND

[0002] The suction chamber is a key component of the cigarette making machine, and the suction tape forming is a key process of the cigarette making machine. The nylon suction tape inside the suction chamber plays an important role in ensuring the stable high-speed operation of the device when it is running at high speed. After the supply and strip forming machine part is combined by the air chamber cover plate and the air chamber body to form a negative pressure suction chamber, it is used to provide stable negative pressure for the suction tape forming process. The tobacco stream is adsorbed onto the suction tape under the action of negative pressure suction. The suction tape, as a key component, is wound around the suction tape wheel and tensioned by the air cylinder, and is not easy to slip. It is like a negative pressure driven "conveyor belt", which is mainly responsible for adsorbing the fluffy tobacco bundle after trimming and cutting to the porous belt surface, and continuously and stably conveying it to the cigarette making part. Its core function is to constrain the tobacco through negative pressure adsorption force to prevent it from scattering or disordering during high-speed transmission, so as to ensure that the tobacco bundle can reach a constant distribution state when entering the rolling stage, which is one of the decisive factors for the final formation of the cigarette to be tight, moderate, uniform in thickness, and stable in combustion quality.

[0003] The traditional suction tape tensioning structure of the cigarette making machine mainly consists of a single-rod air cylinder, a connecting piece and a tensioning wheel. The tensioning wheel is rotatably installed in the air chamber body, and its wheel surface is in a preset angle of fit with the suction tape in the running state. The single-rod air cylinder piston rod is connected with the tensioning wheel through the connecting piece. The tensioning process is as follows: when the device is running, the single-rod air cylinder receives the control signal and performs the contraction action, and the piston rod drives one of the tensioning wheels to displace horizontally through the connecting piece, thereby realizing the tensioning of the suction tape.

[0004] However, the inventor found in actual use that when the single-rod air cylinder piston rod drives the tensioning wheel horizontally, there is a certain bending moment, which will cause the suction tape to vibrate and the tension to fluctuate during high-speed operation, thereby reducing the uniformity of the tobacco bundle adsorbed on the belt surface and affecting the quality of the cigarette. SUMMARY

[0005] The main purpose of the present application is to provide a tensioning device for a suction tape of a suction chamber of a cigarette making machine, which aims to solve the technical problem that when the single-rod air cylinder piston rod drives the tensioning wheel horizontally, there is a certain bending moment, which will cause the suction tape to vibrate and the tension to fluctuate during high-speed operation, thereby reducing the uniformity of the tobacco bundle adsorbed on the belt surface and affecting the quality of the cigarette.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] A kind of tensioning device for cigarette machine suction room suction silk band, including wind chamber body, further including:

[0008] Movable mounting seat, it is movably arranged in wind chamber body, it is equipped with tensioning wheel on it;

[0009] Cylinder body, it is equipped in movable mounting seat side away from tensioning wheel, its length is side by side with main piston rod and guide rod, wherein, main piston rod and guide rod the end away from cylinder body extends to movable mounting seat and is connected with it, to drive movable mounting seat translation along the axial direction of main piston rod and guide rod.

[0010] Optionally, the movable mounting seat includes:

[0011] The installation base plate for installing tensioning wheel is parallel with the rear side plate of wind chamber body and has a gap, the installation base plate width is bent to form a connecting portion in the direction away from the rear side plate, and the connecting portion is perpendicular to the plate surface of the installation base plate;The end of the main piston rod and the guide rod away from the cylinder body is connected with the connecting portion, and the axial lines of the two are parallel to the thickness direction of the connecting portion and perpendicular to the plate surface of the connecting portion.

[0012] Optionally, the guide rod is provided with two and symmetrically distributed on both sides of the main piston rod, the axial line of the main piston rod is parallel to the axial line of the guide rod, and all of them extend along the length direction of the wind chamber body.

[0013] Optionally, the side of the movable mounting seat away from the tensioning wheel is provided with a fixed seat, the fixed seat and the inner side wall of the wind chamber body form an installation cavity, the fixed seat is provided with an installation hole allowing the cylinder body to pass along the thickness direction thereof, and the cylinder body is detachably fixed at the installation hole.

[0014] Optionally, the side of the fixed seat away from the rear side plate of the wind chamber body is provided with a dust cover, and the dust cover extends and covers the entire area of the installation cavity, and the dust cover is made of organic glass dust cover.

[0015] Optionally, the outer periphery of the main piston rod and the guide rod is sleeved with a rubber dust cover that can stretch and contract in the axial direction, and the axial line of the dust cover coincides with the axial line of the main piston rod and the guide rod, and the dust cover is in the form of bellows.

[0016] Optionally, the rotation axis of the tensioning wheel is perpendicular to the axial line of the main piston rod.

[0017] The technical scheme provided by the application can have the following beneficial effects: the application provides a multi-rod cooperative driving and guiding structure by arranging the main piston rod and the guide rod side by side on one side of the length direction of the cylinder body, and connecting the far ends of the main piston rod and the guide rod to the movable mounting seat provided with the tensioning wheel, so that the driving force is uniformly transmitted, and a cooperative stress structure is formed by the guide rod and the main piston rod, which provides reliable lateral support for the main piston rod, thereby inhibiting or reducing the bending moment of the main piston rod and each rod during driving, improving the stability of the axial translation of the movable mounting seat along the main piston rod and the guide rod, thereby reducing the shaking and tension fluctuation of the filter tape during high-speed operation, improving the uniformity of the tobacco strand adsorbed on the band surface, and stabilizing the quality of the cigarette. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Fig. 1 is a schematic view of a three-dimensional structure of the tensioning device;

[0020] Fig. 2 is a schematic view of a planar structure of the tensioning device;

[0021] Fig. 3 is a schematic view of a running track of the filter tape;

[0022] Fig. 4 is an enlarged schematic view of the movable mounting seat;

[0023] Fig. 5 is a schematic view of a planar structure of the multi-rod cylinder;

[0024] Fig. 6 is a schematic view of a three-dimensional structure of the multi-rod cylinder.

[0025] Reference signs: 1, air chamber body; 2, movable mounting seat; 3, tensioning wheel; 4, cylinder body; 5, main piston rod; 6, guide rod; 7, filter tape wheel; 8, mounting base plate; 9, rear side plate; 10, connecting part; 11, fixed seat; 12, mounting cavity; 13, dust cover. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] Example 1:

[0028] See Figs. 1 to 3 A tensioning device for the suction ribbon in the suction chamber of a cigarette machine, comprising a chamber body 1, and further comprising:

[0029] The movable mounting base 2 is movably installed inside the air chamber 1, and a tensioning wheel 3 is provided on it;

[0030] The cylinder body 4 is located on the side of the movable mounting seat 2 away from the tension wheel 3. The main piston rod 5 and the guide rod 6 are arranged side by side along its length. The end of the main piston rod 5 and the guide rod 6 away from the cylinder body 4 extends to the movable mounting seat 2 and is connected thereto, so as to drive the movable mounting seat 2 to translate along the axial direction of the main piston rod 5 and the guide rod 6.

[0031] Specifically, several suction ribbon wheels 7 are rotatably installed inside the air chamber 1. The surface of the wheels fits into the suction ribbon in operation at a preset wrap angle to guide the suction ribbon. Its running trajectory is as follows: Fig. 3 As indicated by the arrow, the air chamber 1 serves as the mounting reference and bearing base for the entire tensioning device and suction belt guiding system. It is used to fix the cylinder body 4, support the movement of the movable mounting seat 2, and provide a rotation mounting reference for several suction belt wheels 7, ensuring the assembly position accuracy and operational stability of all components. The air chamber 1, together with the suction belt, forms a negative pressure adsorption environment (adapting to the core function of the cigarette machine's air suction chamber). Through its own negative pressure chamber, it provides a negative pressure foundation for the adsorption of tobacco strands by the suction belt, while also providing working space for the smooth operation of the suction belt.

[0032] The movable mounting seat 2 is movably arranged in the air chamber body 1, so that it has a movable function, and the tensioning wheel 3 is rotatably mounted on the movable mounting seat 2, and the movable mounting seat 2 realizes the support and driving of the tensioning wheel 3. As an intermediate link of power transmission, the movable mounting seat 2 is rigidly connected with the main piston rod 5 and the guide rod 6, converts the driving force of the cylinder body 4 into the linear translation movement of the movable mounting seat 2, and then drives the tensioning wheel 3 to move synchronously, so as to realize the tensioning of the suction belt. The movement stroke of the movable mounting seat 2 is restricted by the main piston rod 5 and the guide rod 6, so as to ensure that the translation trajectory is accurately along the axial direction of the main piston rod 5 / guide rod 6, and the movement deviation is avoided. The tensioning wheel 3 changes the relative position between itself and the suction belt through the axial translation of the movable mounting seat 2, and then adjusts the effective running length of the suction belt (or fine adjusts the fitting wrap angle of the suction belt and the wheel surface), so as to realize the tensioning or tension compensation of the suction belt. The tensioning wheel 3 cooperates with the suction belt wheel 7 to limit the running track of the suction belt, the wheel surface of the tensioning wheel 3 and the suction belt form a fitting cooperation with a preset wrap angle, the friction transmission is ensured when the suction belt runs, the suction belt does not slip, and the tensioning force is uniformly transmitted to the whole suction belt.

[0033] The cylinder body 4 is fixed in the air chamber body 1 and located on the side away from the tensioning wheel 3 of the movable mounting seat 2. The cylinder body 4 serves as a power source of the whole tensioning device, and provides continuous and stable driving force for the translation of the movable mounting seat 2. The structure design of arranging the main piston rod 5 and the guide rod 6 side by side on one side of the length direction of the cylinder body 4 replaces the single power output mode of the traditional single-rod cylinder, and avoids the risk of unbalanced load. The main piston rod 5 serves as a main power output component, one end of which is connected with the piston of the cylinder body 4, and the other end of which is fixed with the movable mounting seat 2. The stretching and contracting power of the cylinder body 4 is transmitted to the movable mounting seat 2, so as to drive the movable mounting seat 2 to translate along the axial direction of the main piston rod 5. The guide rod 6 is arranged at least one, which is arranged side by side and synchronously stretched and contracted with the main piston rod 5, and the two together with the cylinder body 4 form a multi-rod cylinder, which provides accurate guidance and unbalanced load suppression for the movable mounting seat 2. The movement posture of the movable mounting seat 2 is limited through bilateral (or multi-lateral) support, a cooperative stress structure is formed, the lateral force and torque in each direction can be effectively resisted, the radial movement of the main piston rod 5 is greatly limited, the main piston rod 5 is ensured to translate along the axial direction, the piston rod can perform high-precision linear reciprocating movement, the shaking is reduced, the repeat positioning accuracy is improved, and the rigidity and stability of the tensioning device are improved.

[0034] In the prior art, the single-rod cylinder piston rod has a certain bending moment when driving the tensioning wheel 3 in the transverse direction, which will cause the suction tape to vibrate and the tension to fluctuate during high-speed operation, thereby reducing the uniformity of the tobacco strand adsorption on the band surface and affecting the quality of the cigarette. The present application provides a multi-rod cooperative driving and guiding structure by arranging the main piston rod 5 and the guide rod 6 side by side on one side of the length direction of the cylinder body 4, and the ends of the two rods away from the cylinder body 4 are connected to the movable mounting seat 2 equipped with the tensioning wheel 3. The multi-rod cooperative layout not only uniformly transmits the driving force, but also forms a cooperative force structure through the guide rod 6 and the main piston rod 5 to provide reliable lateral support for the main piston rod 5, thereby suppressing or reducing the bending moment of the main piston rod 5 and each rod during driving, improving the stability of the axial translation of the movable mounting seat 2 along the main piston rod 5 and the guide rod 6, and further reducing the vibration and tension fluctuation of the suction tape during high-speed operation, improving the uniformity of the tobacco strand adsorption on the band surface, and stabilizing the quality of the cigarette.

[0035] Embodiment two:

[0036] Referring to Figs. 1 to 6 , based on embodiment one, the movable mounting seat 2 comprises:

[0037] The mounting base plate 8 for mounting the tensioning wheel 3 is parallel to the rear side plate 9 of the air chamber body 1 and has a gap, the mounting base plate 8 is bent to form a connecting part 10 on one side of the width direction away from the rear side plate 9, and the connecting part 10 is perpendicular to the plate surface of the mounting base plate 8; the ends of the main piston rod 5 and the guide rod 6 away from the cylinder body 4 are connected to the connecting part 10, and the axes of the two rods are parallel to the thickness direction of the connecting part 10 and perpendicular to the plate surface of the connecting part 10.

[0038] Specifically, the mounting base 8 realizes the rotational installation of the tensioning wheel 3 through the preset mounting hole position, supports the tensioning wheel 3, and at the same time limits the installation posture of the tensioning wheel 3, so as to avoid the deviation of the suction belt caused by installation deviation. The design that the mounting base 8 is parallel to the rear side plate 9 of the air chamber body 1 and a gap is reserved can avoid the frictional interference between the movable mounting seat 2 and the air chamber body 1 during translation, and ensure the smooth displacement along the axial direction of the main piston rod 5. The vertical connecting part 10 formed by bending provides a unified and rigid connection reference for the main piston rod 5 and the guide rod 6, ensures that the extension ends of the two (or more) rods can be synchronously and stably connected with the movable mounting seat 2, avoids the power transmission lag or uneven force caused by the dispersion of the connection points, and guarantees the synchronization of the multi-rod cooperative driving. The axial lines of the main piston rod 5 and the guide rod 6 are parallel to the thickness direction of the connecting part 10 and perpendicular to the plate surface of the connecting part 10, so that the driving force output by the multiple rods is vertically transmitted to the connecting part 10 along the preset axial direction, and then the power is accurately converted into the transverse translation movement of the mounting base 8 (and the tensioning wheel 3) through the vertical rigid connection between the connecting part 10 and the mounting base 8, so as to avoid the radial component force or additional torque of the driving force, and further inhibit the generation of bending moment.

[0039] Optionally, the guide rod 6 is provided with two guide rods symmetrically distributed on both sides of the main piston rod 5, and the axial lines of the main piston rod 5 and the guide rod 6 are parallel and all extend along the length direction of the air chamber body 1.

[0040] Specifically, the two guide rods 6 are symmetrically distributed on both sides of the main piston rod 5, forming a three-point force structure of middle main driving and two-side symmetric support, which can evenly share the lateral force generated by the suction belt tension fluctuation to the main piston rod 5 and the two guide rods 6, realize the mutual offset of the lateral force through the symmetric layout, reduce the additional bending moment of each rod during driving, and further improve the stress stability. The axial lines of the main piston rod 5 and the two guide rods 6 are parallel and extend along the length direction of the air chamber body 1, and the three form a unified axial guide reference, which limits the radial deviation, inclination or torsion of the movable mounting seat 2, ensures that the movable mounting seat 2 can only accurately and linearly translate along the length direction of the air chamber body 1 (i.e. the effective direction of the suction belt tension adjustment), and avoids the inclination and shaking of the tensioning wheel 3 caused by the deviation of the movement posture, so as to improve the straightness of translation and the repeat positioning accuracy.

[0041] Optionally, the side of the movable mounting seat 2 away from the tensioning wheel 3 is provided with a fixed seat 11, the fixed seat 11 and the inner side wall of the air chamber body 1 form an installation cavity 12, the fixed seat 11 is provided with an installation hole allowing the air cylinder body 4 to pass through along the thickness direction of the fixed seat 11, and the air cylinder body 4 is detachably fixed at the installation hole.

[0042] Specifically, the fixed seat 11 provides a mounting carrier for the cylinder body 4, and limits the cylinder body 4 in the radial direction through the mounting hole to avoid deviation due to vibration during operation, thereby ensuring the synchronization of the multi-rod cooperative driving from the aspect of mounting. The fixed seat 11 is fixedly connected in the wind chamber body 1, and is surrounded by the inner side wall of the wind chamber body 1 to form a mounting cavity 12, thereby forming a certain protection for the cylinder body 4 and prolonging the service life of the cylinder body 4. At the same time, the mounting cavity 12 defines the mounting space of the cylinder body 4, so that the cylinder body 4 maintains a safe distance from the moving parts such as the yarn take-up pulley 7 in the wind chamber body 1, thereby avoiding movement interference between the cylinder body 4 and other parts when the movable mounting seat 2 translates, and ensuring the smoothness of the overall device operation. The cylinder body 4 is fixed to the edge wall of the fixed seat 11 at the mounting hole by a screw, and is detachably fixed, thereby simplifying the assembly and later maintenance process. During assembly, the cylinder body 4 can be directly fixed through the mounting hole without complex adjustment. When the cylinder body 4 fails (such as damage to the sealing element or abnormal power output) or needs to be regularly maintained, the core executive components such as the movable mounting seat 2 and the tensioning wheel 3 do not need to be disassembled, and only the fixed structure of the cylinder body 4 needs to be disassembled to take out, thereby shortening the maintenance time and reducing the operation and maintenance cost.

[0043] Embodiment three:

[0044] Referring to Fig. 2 , based on the above embodiment, optionally, the fixed seat 11 is provided with a dust cover 13 away from one side of the rear side plate 9 of the wind chamber body, and the dust cover 13 extends and covers the entire area of the mounting cavity 12. The dust cover 13 is made of organic glass.

[0045] Specifically, the dust cover 13 covers the fixed seat 11 and the connection part of the cylinder and the fixed seat 11, and can block the invasion of impurities such as tobacco shreds, dust, and oil stains into the mounting and lamination surface of the cylinder body and the fixed seat 11 and the bolt connection point, thereby avoiding connection loosening or lamination wear caused by impurities, ensuring the rigidity connection stability of the cylinder and the fixed seat 11, further ensuring the axial positioning accuracy of the main piston rod 5 and the guide rod 6, and avoiding power transmission deviation caused by connection loosening. The dust cover 13 forms a physical barrier based on the fixed seat 11, avoids collision of external tools and sundries with the connection part of the cylinder and the fixed seat 11 during production, and prevents displacement, connection rupture, or deformation of the cylinder body caused by accidental impact.

[0046] Optionally, the outer periphery of the main piston rod 5 and the guide rod 6 is sleeved with a rubber dust cover that can stretch and contract in the axial direction, and the axis of the dust cover coincides with the axes of the main piston rod 5 and the guide rod 6. The dust cover is in a bellows shape (not shown in the figure).

[0047] Specifically, the dust cover is sleeved on the outer periphery of the main piston rod 5 and the guide rod 6, and the axes coincide, forming a full-encircling protection for the exposed area of the rod body, which can block the attachment of tobacco crumbs, dust, oil stains and other impurities generated during the operation of the cigarette making machine to the surface of the rod body, the sealing interface between the rod body and the cylinder body 4, and the connecting end of the rod body and the movable mounting seat 2, thereby avoiding the surface scratching of the rod body, the wear of the sealing element (such as the aging of the lip-shaped seal and the O-ring), or the jamming of the connecting part 10, preventing the problems of air leakage of the cylinder, the increase of the extension resistance of the rod body, and the like, and ensuring the smooth reciprocating movement of the main piston rod 5 and the guide rod 6, the synchronization of the multi-rod coordinated extension and retraction, and the indirect support for the bending moment suppression and the stable translation of the movable mounting seat 2. The bellows-shaped structure has good axial extension and retraction, can synchronously extend and retract and deform with the reciprocating translation of the main piston rod 5 and the guide rod 6, does not limit the stroke range of the rod body, and will not generate additional friction resistance or motion interference; at the same time, the design of the axis coincidence ensures that the dust cover always deforms along the axial direction of the rod body during extension and retraction, avoids the protection failure caused by deviation and torsion or the collision with the surrounding components, adapts to the motion characteristics of the high-frequency reciprocation of the rod body, and guarantees the response speed and the translation stability of the multi-rod driving. The bellows-shaped dust cover not only can block solid impurities, but also can reduce the direct contact of oil stains and moisture with the surface of the rod body, thereby reducing the risk of rust and oxidation of the rod body; at the same time, the flexible wrapping structure of the bellows-shaped dust cover can slightly buffer the external slight impact or foreign matter collision, thereby avoiding the surface damage (such as scratches and depressions) of the rod body, and guaranteeing the straightness and surface precision of the rod body.

[0048] In the embodiment, in order to solve the problem of durability in the tobacco dust environment, a combined sealing scheme of the organic glass dust cover 13 and the rubber dust cover is adopted, and the cylinder body and the movement parts of the main piston rod 5 and the guide rod 6 are protected respectively, thereby ensuring the long-term operation accuracy and service life of the device under harsh working conditions.

[0049] Referring to Fig. 2 Optionally, the rotation axis of the tensioning wheel 3 is perpendicular to the axis of the main piston rod 5.

[0050] Specifically, the rotation axis (i.e., the direction of the radial tensioning force) of the tensioning wheel 3 is perpendicular to the driving axis (i.e., the direction of the driving force) of the main piston rod 5, so that when the tensioning wheel performs the radial tensioning function, the motion plane of the tensioning wheel is orthogonal to the motion direction of the driving unit. This orthogonal relationship achieves the decoupling of the force flow path in kinematics: the driving unit only needs to provide linear displacement along its axial direction, and does not need to bear the lateral torque or deflection load caused by the direction coupling, which is conducive to maintaining the planarity of the belt surface operation, thereby supporting the stable adsorption of the tobacco strand.

[0051] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tensioning device for the suction ribbon in the suction chamber of a cigarette machine, comprising a chamber body (1), characterized in that, Also includes: The movable mounting base (2) is movably located inside the air chamber body (1), and a tensioning wheel (3) is provided on it; The cylinder body (4) is located on the side of the movable mounting seat (2) away from the tension wheel (3). The main piston rod (5) and guide rod (6) are arranged side by side along its length. The end of the main piston rod (5) and guide rod (6) away from the cylinder body (4) extends to the movable mounting seat (2) and is connected thereto, so as to drive the movable mounting seat (2) to translate along the axial direction of the main piston rod (5) and guide rod (6).

2. The tensioning device for the suction ribbon in the suction chamber of a cigarette machine according to claim 1, characterized in that, The movable mounting base (2) includes: The mounting base plate (8) for mounting the tension wheel (3) is parallel to and has a gap with the rear side plate (9) of the air chamber body (1). The width of the mounting base plate (8) is bent to one side away from the rear side plate (9) to form a connecting part (10), and the connecting part (10) is perpendicular to the plate surface of the mounting base plate (8). The end of the main piston rod (5) and the guide rod (6) away from the cylinder body (4) is connected to the connecting part (10), and their axes are parallel to the thickness direction of the connecting part (10) and perpendicular to the plate surface of the connecting part (10).

3. The tensioning device for the suction ribbon in the suction chamber of a cigarette machine according to claim 1, characterized in that, Two guide rods (6) are provided and symmetrically distributed on both sides of the main piston rod (5). The axis of the main piston rod (5) is parallel to the axis of the guide rod (6), and all three extend along the length of the air chamber body (1).

4. The tensioning device for the suction ribbon in the suction chamber of a cigarette machine according to claim 2, characterized in that, The movable mounting seat (2) is provided with a fixed seat (11) on the side away from the tension wheel (3). The fixed seat (11) and the inner wall of the air chamber body (1) form a mounting cavity (12). The fixed seat (11) has a mounting hole along its thickness direction that allows the cylinder body (4) to pass through. The cylinder body (4) is detachably fixed at the mounting hole.

5. The tensioning device for the suction ribbon in the suction chamber of a cigarette machine according to claim 4, characterized in that, The mounting base (11) is provided with a dust cover (13) on the side away from the rear side plate (9) of the air chamber, and the dust cover (13) extends and covers the entire area of ​​the mounting cavity (12). The dust cover (13) is made of plexiglass.

6. The tensioning device for the suction ribbon in the suction chamber of a cigarette machine according to claim 1, characterized in that, The outer periphery of the main piston rod (5) and the guide rod (6) is fitted with a rubber dust cover that extends and retracts along the axis, and the axis of the dust cover coincides with the axis of the main piston rod (5) and the guide rod (6). The dust cover is corrugated.

7. The tensioning device for the suction ribbon in the suction chamber of a cigarette machine according to claim 1, characterized in that, The axis of rotation of the tensioning wheel (3) is perpendicular to the axis of the main piston rod (5).

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