Tobacco shred suction forming conveying double-channel guide rail

Abstract

An integrated inner guide rail, an integrated middle guide rail and an integrated outer guide rail are sequentially and adjacently arranged, and the integrated inner guide rail, the integrated middle guide rail and the integrated outer guide rail are integrated non-segmented assemblies; a fixing piece is arranged between the integrated inner guide rail and the integrated middle guide rail, so that a cut tobacco suction belt channel I is formed between the integrated inner guide rail and the integrated middle guide rail, and a cut tobacco suction channel I is formed above the cut tobacco suction belt I; a fixing piece is arranged between the integrated middle guide rail and the integrated outer guide rail, so that a cut tobacco suction belt channel II is formed between the integrated middle guide rail and the integrated outer guide rail, and a cut tobacco suction channel II is formed above the cut tobacco suction belt II; an air chamber inner channel alloy supporting strip is arranged on the inner wall of an air channel below a cut tobacco suction belt channel I of the integrated inner guide rail and the integrated middle guide rail; an outer air chamber alloy supporting strip I, an outer air chamber alloy supporting strip II and an outer air chamber alloy supporting strip III are arranged on the inner wall of an air duct below a cut tobacco suction belt channel II of the integrated middle guide rail and the integrated outer guide rail; the integrated inner guide rail, the integrated middle guide rail and the integrated outer guide rail are connected through fixing pieces.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cigarette tobacco suction forming equipment technical field, concretely relates to a tobacco suction forming conveying double -channel guide rail. BACKGROUND

[0002] With the development of domestic tobacco industry, each cigarette enterprise puts forward higher requirement to the physical index of cigarette, such as: single gram weight of cigarette, weight SD, suction resistance SD, circumference SD, roundness etc.;In the cigarette rolling forming process, guide rail assembly is the key part of determining single gram weight of cigarette, weight SD, suction resistance SD these physical indexes. Meanwhile, each cigarette enterprise reduces consumption, and the falling silk of cigarette point tobacco end, tobacco loose, such as cigarette empty head phenomenon.

[0003] Weight SD (Single Weight Standard Deviation) : single weight standard deviation, indicates the consistency of single cigarette weight;

[0004] Suction resistance SD (Airflow Resistance Standard Deviation) : suction resistance standard deviation, indicates the consistency of cigarette suction resistance;

[0005] Circumference SD (Circumference Standard Deviation) : circumference standard deviation, is usually used to indicate the circumference consistency of cigarette;

[0006] And the existing guide rail assembly has the defect of high empty head rate of cigarette, and the existing guide rail assembly cannot meet the new physical index of cigarette. INVENTION CONTENTS

[0007] The utility model provides a tobacco suction forming conveying double -channel guide rail, improves the physical index such as single gram weight of cigarette, weight SD, suction resistance SD, improves the falling silk of cigarette point tobacco end, tobacco loose (i. e. cigarette empty head) simultaneously, reduces the rejection rate of waste cigarette, thereby reduces production consumption, improves the continuity of equipment operation and production efficiency.

[0008] The utility model aims at providing a tobacco suction forming conveying double -channel guide rail, and the integrated inner guide rail, the integrated middle guide rail and the integrated outer guide rail are sequentially and adjacently arranged, and the integrated inner guide rail, the integrated middle guide rail and the integrated outer guide rail are integrated and non-segmented components;

[0009] The integrated inner guide rail and the integrated middle guide rail are provided with a fixing member, so that the integrated inner guide rail and the integrated middle guide rail form a suction belt channel I, and the suction belt I is provided with a suction channel I above it.

[0010] The fixed part is arranged between the integrated middle guide rail and the integrated outer guide rail, so that the integrated middle guide rail and the integrated outer guide rail form a suction tape passage II, and the suction tape II is above the suction tape passage II;

[0011] The suction tape passage I of the integrated inner guide rail and the integrated middle guide rail is provided with an air chamber inner alloy strip on the inner wall of the lower air duct;

[0012] The suction tape passage II of the integrated middle guide rail and the integrated outer guide rail is provided with an air chamber outer alloy strip I, an air chamber outer alloy strip II and an air chamber outer alloy strip III on the inner wall of the lower air duct;

[0013] The integrated inner guide rail, the integrated middle guide rail and the integrated outer guide rail are connected through the fixed part;

[0014] The double-channel guide rail provided by the technical scheme has the integrated inner guide rail, the integrated middle guide rail and the integrated outer guide rail, so that the precision and stability in the tobacco suction forming and conveying process are effectively improved;

[0015] The double-channel design makes the suction tape I and the suction tape II run in different channels respectively, avoids the uneven distribution of tobacco in the suction process, effectively improves the single weight, weight SD, suction resistance SD and other key physical indexes of the cigarette, ensures the consistency of the tobacco in the forming and conveying process, and significantly reduces the deviation in production.

[0016] By optimizing the structure of the tobacco suction channel, the utility model reduces the tobacco falling and loose empty head phenomenon of the cigarette point, effectively reduces the empty head rate of the cigarette, improves the filling uniformity of the cigarette, and improves the quality stability of the product;

[0017] The integrated guide rail design reduces the complex assembly segmentation and connection problems, increases the stability and service life of the equipment, reduces the loss of tobacco in the conveying process, reduces the rejection rate of waste tobacco, improves the continuity and production efficiency of the equipment operation, and reduces the overall production consumption;

[0018] The technical scheme provided by the application also has the following technical features:

[0019] Preferably, in an embodiment of the application, the integrated inner guide rail and the integrated middle guide rail are provided with inclined surfaces in a matched and symmetrical manner, and the gap formed between the inclined surfaces is the suction tape passage I;

[0020] Through the design of the slope on the inner guide rail and the middle guide rail, a more smooth and precise tobacco suction channel I is formed; this slope matching structure makes the adsorption of tobacco on the suction belt more uniform, reducing the resistance caused by tobacco friction or accumulation in the channel; traditional straight edge channel design is prone to cause tobacco accumulation or uneven distribution at the edge of the guide rail, and the slope design can guide the airflow and tobacco flow, thereby avoiding these problems;

[0021] The slope design can effectively reduce the friction and collision between the suction belt and the guide rail, enhance the smoothness of the suction belt running in the channel, and reduce the impact caused by equipment vibration or guide rail wear; this has a significant effect on prolonging the service life of the equipment and ensuring the stability of continuous production;

[0022] The slope gap between the inner guide rail and the middle guide rail precisely controls the size of the tobacco suction channel I, ensuring the running space of the suction belt in the channel. Through this structural optimization, the airflow intensity can be better controlled, the negative pressure under the suction belt is more stable, and the tobacco adsorption effect is improved;

[0023] The gap also directly affects the uniform adsorption of tobacco on the suction belt. Too large or too small gap may cause unstable airflow, which in turn affects the suction effect. Proper gap design not only ensures uniform airflow distribution, but also optimizes the adsorption and conveying process of tobacco, making the distribution of tobacco on the suction belt more uniform, and ultimately improving the physical indicators of the finished cigarette.

[0024] Through the cooperation of the slope structure and the suction belt, the conveying of tobacco in the guide rail becomes smoother, reducing the accumulation problem that may occur during the operation of the suction belt; this design can effectively avoid the "empty head" phenomenon in cigarette forming, i.e., the problem of loose or insufficient tobacco at the lit end of the cigarette, thereby ensuring the stability and quality of the lit cigarette;

[0025] Improve the physical indicators of the cigarette: the slope design improves the airflow smoothness of the tobacco suction channel, avoids uneven distribution of tobacco, and thus improves the physical indicators such as single cigarette weight, weight SD, and draw resistance SD of the cigarette; this enables the cigarette enterprise to better meet the increasingly stringent product quality requirements, while reducing the product rejection rate.

[0026] Preferably, in an embodiment of the present application, the inner guide rail and the outer guide rail are matched in shape, with adjacent and connected flat surfaces on the upper end face, and the tobacco channel is formed outside, which has the following technical effects:

[0027] The stability of the guide rail assembly is improved: the upper end faces of the inner guide rail and the outer guide rail are designed as flat surfaces and abut adjacent to each other; this design enhances the connection stability between the two guide rails through the close fit of the flat structure, avoiding the shaking or loosening phenomenon caused by structural imbalance; this not only ensures the smoothness of the tobacco band during operation, but also reduces the deformation and wear of the guide rail assembly, thereby prolonging the service life of the equipment;

[0028] By simplifying the structure, the assembly precision is improved: by designing the upper end face as a flat surface, the manufacturing and assembly process of the guide rail assembly is simplified; this structural design reduces the complex splicing between guide rails, enabling precise butt joint between guide rails, reducing assembly errors and improving production efficiency; in addition, the flat structure also makes the force transmission between guide rails more uniform, reducing local stress concentration and thus reducing the risk of damage to the guide rails.

[0029] Preferably, in an embodiment of the present application, one end of the inner guide rail and the outer guide rail is provided with a shaft sleeve I, which is used for positioning;

[0030] The following effects are achieved through the positioning of the shaft sleeve I:

[0031] Precise positioning of the guide rail: the design of the shaft sleeve I aims to ensure that the inner guide rail and the outer guide rail remain stable and accurately positioned during equipment operation; through the fixing action of the shaft sleeve I, the guide rail assembly will not displace or misalign during assembly or operation, ensuring the stability of the guide rail; this positioning method helps to maintain the accurate shape and size of the tobacco band passage and the tobacco passage, thereby improving the precision and stability of tobacco conveying;

[0032] Prevent the guide rail assembly from loosening: due to long-term operation and vibration of the equipment, the guide rail assembly may loosen or misalign; by setting the shaft sleeve I, this phenomenon can be effectively avoided; the shaft sleeve I functions to fix and limit the position of the guide rail in structure, preventing friction and wear between guide rails during operation and prolonging the service life of the equipment.

[0033] The shaft sleeve I precisely positions the guide rail, ensuring the dimensional stability of the tobacco band passage and reducing the problem of uneven tobacco conveying caused by changes in passage size;

[0034] Precise positioning of the guide rail can significantly improve the conveying efficiency and uniformity of tobacco, thereby improving the physical indicators of cigarettes, such as single weight, weight SD, and draw resistance SD. Reducing positioning errors helps to ensure that the amount of tobacco in each cigarette is stable and consistent, improving the overall quality of cigarettes and meeting the higher requirements of the industry for physical indicators of cigarettes;

[0035] Preferably, in an embodiment of the present application, the fixing member comprises a spacer, a sleeve II, and a threaded fastener, the sleeve II is sleeved on the threaded fastener, and the spacer is arranged above the sleeve II.

[0036] The spacer is arranged above the sleeve II and plays a role of isolation and support. By effectively separating different components in the guide rail assembly, the spacer avoids direct contact or friction between the components, thereby reducing wear and tear.

[0037] The sleeve II is sleeved on the threaded fastener, making the entire fixing structure more secure. The arrangement of the sleeve II not only improves the fastening degree between the guide rails, but also adjusts the force and position of the fastening through the rotation of the threaded fastener, ensuring the precise positioning of the guide rails. This combined design effectively improves the assembly precision of the guide rail assembly and avoids displacement or loosening problems.

[0038] Preferably, in an embodiment of the present application, the inner guide rail and the middle guide rail are fixed by a threaded fastener, and the middle guide rail and the outer guide rail are fixed by a threaded fastener. The design of the sleeve II and the threaded fastener not only improves the assembly precision, but also simplifies the installation process.

[0039] Preferably, in an embodiment of the present application, the wind chamber outer alloy strip I, the wind chamber outer alloy strip II, the wind chamber outer alloy strip III, and the wind chamber inner alloy strip are rectangular long thin-walled pieces.

[0040] Preferably, in an embodiment of the present application, the wind chamber outer alloy strip I, the wind chamber outer alloy strip II, the wind chamber outer alloy strip III, and the wind chamber inner alloy strip are provided with mounting holes at both ends.

[0041] Preferably, in an embodiment of the present application, the spacer is a ring-shaped piece.

[0042] Preferably, in an embodiment of the present application, the sleeve II is a cylindrical piece, and a protrusion or a protruding ring-shaped piece is provided on the sleeve II for supporting the spacer and isolating the suction belt.

[0043] Preferably, in an embodiment of the present application, the sleeve I comprises a horizontal hole perpendicular to the central axis of the hole, a vertical cylinder is arranged on the outer wall of the horizontal hole; a protruding table is arranged adjacent to the vertical cylinder on the outer wall of the horizontal hole, the protruding table narrows along the width of the outer end, and the central axis of the protruding table is perpendicular to the central axis of the horizontal hole and the central axis of the vertical cylinder.

[0044] Preferably, in an embodiment of the present application, the threaded fastener is an M6 thin cylindrical head screw.

[0045] The beneficial effects of the present application are as follows:

[0046] 1. The original suction tape guide rail and tobacco wind chamber guide rail are combined into an integrated wind chamber guide rail; this improved design can ensure the continuity of the suction tape channel and improve the resistance of tobacco conveying; after installation, no adjustment is required, reducing installation, adjustment and calibration time, and being more reasonable, durable, precise and requiring no maintenance during the use period than the original structure;

[0047] 2. The ceramic roller is removed: the roller structure of the wind chamber guide rail supporting the suction tape is improved to a guide strip structure, a number of alloy guide strips are added longitudinally in the guide rail, the number of guide strips is determined according to the guide rail specification, and the improved design changes the uneven thickness of tobacco caused by the wave-shaped suction tape under the action of negative pressure during the conveying of tobacco, so that the thickness of tobacco on the suction tape is more balanced, and the uniformity of tobacco filling in the cigarette is ensured;

[0048] 3. The application provides a tobacco suction forming conveying double-channel guide rail, which combines the original suction tape guide rail and the tobacco guide rail into one, and the structure can ensure the parallelism of the suction tape channel, so that the suction tape runs more stably; at the same time, the perpendicularity of the suction tape channel and the tobacco channel can be better ensured, so that the tobacco can be more uniformly adsorbed under the suction tape, and the physical index of the cigarette is improved. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 It is an A-A sectional view of a tobacco suction forming conveying double-channel guide rail of the utility model;

[0050] Figure 2 It is a front view of a tobacco suction forming conveying double-channel guide rail of the utility model;

[0051] Figure 3 It is a top view of a tobacco suction forming conveying double-channel guide rail of the utility model;

[0052] Figure 4 It is a B-B sectional view of a tobacco suction forming conveying double-channel guide rail of the utility model;

[0053] Figure 5 It is a C-C sectional view of a tobacco suction forming conveying double-channel guide rail of the utility model;

[0054] Figure 6 It is a front view of an integrated inner guide rail of a tobacco suction forming conveying double-channel guide rail of the utility model;

[0055] Figure 7 It is a top view of an integrated inner guide rail of a tobacco suction forming conveying double-channel guide rail of the utility model;

[0056] Figure 8The utility model discloses a left view of the integrated inner guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0057] Figure 9 The utility model discloses a D-D section view of the integrated inner guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0058] Figure 10 The utility model discloses a front view of the integrated middle guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0059] Figure 11 The utility model discloses a top view of the integrated middle guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0060] Figure 12 The utility model discloses an elevation view of the integrated middle guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0061] Figure 13 The utility model discloses a W-W section view of the integrated middle guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0062] Figure 14 The utility model discloses a front view of the integrated outer guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0063] Figure 15 The utility model discloses a top view of the integrated outer guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0064] Figure 16 The utility model discloses a F-F section view of the integrated outer guide rail of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0065] Figure 17 The utility model discloses a front view and left view of the shaft sleeve I of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0066] Figure 18 The utility model discloses a front view of the air chamber outer alloy supporting strip I of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0067] Figure 19 The utility model discloses a front view of the air chamber outer alloy supporting strip II of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0068] Figure 20 The utility model discloses a front view of the air chamber outer alloy supporting strip III of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0069] Figure 21 The utility model discloses a front view of the air chamber inner alloy supporting strip of the double-channel guide rail of tobacco cut filler suction forming and conveying,

[0070] Figure 22 It is a half sectional view of the spacer of a tobacco cut filler suction forming and conveying double-channel guide rail of the utility model;

[0071] Figure 23 It is a half sectional view of the shaft sleeve II of a tobacco cut filler suction forming and conveying double-channel guide rail of the utility model;

[0072] Figure 24 It is a wave-shaped schematic diagram of the original ceramic bead suction belt guide rail circulating under the action of negative pressure;

[0073] Figure 25 It is a guide rail structure diagram in the original air chamber of the prior art;

[0074] Figure 26 It is an E-E sectional view of the guide rail in the original air chamber of the prior art;

[0075] Figure 27 It is a schematic diagram of the suction belt transition guide rail of the guide rail in the original air chamber of the prior art;

[0076] Figure 28 It is a guide rail structure diagram in the original air chamber of the prior art;

[0077] Figure 29 It is a guide rail structure diagram outside the original air chamber of the prior art;

[0078] Elements in the figure:

[0079] 1, the guide rail in the body

[0080] 2, the guide rail in the body

[0081] 3, the guide rail outside the body

[0082] 4, the shaft sleeve I

[0083] 5, the alloy support strip I outside the air chamber

[0084] 6, the alloy support strip II outside the air chamber

[0085] 7, the alloy support strip III outside the air chamber

[0086] 8, the alloy support strip inside the air chamber

[0087] 9, the spacer

[0088] 10, the shaft sleeve II

[0089] 11, the threaded part

[0090] 103, the suction belt

[0091] 104, the ceramic roller

[0092] 101, front guide rail of suction tape in wind chamber

[0093] 201, guide rail in wind chamber

[0094] 301, transition guide rail of suction tape

[0095] 102, front guide rail of suction tape in wind chamber

[0096] 202, middle guide rail in wind chamber

[0097] 302, rear guide rail of suction tape

[0098] 103, front guide rail of suction tape outside wind chamber

[0099] 303, guide rail outside wind chamber. DETAILED DESCRIPTION

[0100] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate the present application, and are not limiting to the utility model.

[0101] In the description of the present application, it should be pointed out that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0102] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0103] In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0104] As Figures 1-23 A tobacco suction forming and conveying double-channel guide rail, the integrated inner guide rail 1, the integrated middle guide rail 2 and the integrated outer guide rail 3 are sequentially and adjacently arranged, and the integrated inner guide rail 1, the integrated middle guide rail 2 and the integrated outer guide rail 3 are integrated and not segmented components;

[0105] The fixed member is arranged between the integrated inner guide rail 1 and the integrated middle guide rail 2, so that the suction tape passage I is formed between the integrated inner guide rail 1 and the integrated middle guide rail 2, and the suction tape passage I is above the suction tape I;

[0106] The fixed member is arranged between the integrated middle guide rail 2 and the integrated outer guide rail 3, so that the suction tape passage II is formed between the integrated middle guide rail 2 and the integrated outer guide rail 3, and the suction tape passage II is above the suction tape II;

[0107] The air chamber inner alloy support strip 8 is arranged on the inner wall of the lower air duct of the suction tape passage I of the integrated inner guide rail 1 and the integrated middle guide rail 2;

[0108] The air chamber outer alloy support strip I 5, the air chamber outer alloy support strip II 6 and the air chamber outer alloy support strip III 7 are arranged on the inner wall of the lower air duct of the suction tape passage II of the integrated middle guide rail 2 and the integrated outer guide rail 3;

[0109] The integrated inner guide rail 1, the integrated middle guide rail 2 and the integrated outer guide rail 3 are connected through the fixed member.

[0110] Compared with the prior art Figures 25-29 , the existing structure of the suction tape 103, the ceramic roller 104, the air chamber inner suction tape guide rail 101, the air chamber inner guide rail 201, the suction tape transition guide rail 301, the air chamber middle suction tape front guide rail 102, the air chamber middle guide rail 202, the suction tape rear guide rail 302, the air chamber outer suction tape front guide rail 103 and the air chamber outer guide rail 303 is improved in the application. The improved double-channel alloy air chamber guide rail assembly has the following characteristics:

[0111] The integrated inner guide rail 1 of the application can ensure the continuity of the suction tape passage and improve the resistance of tobacco conveying;

[0112] The integrated middle guide rail 2 of the application combines the original suction tape guide rail and the outer tobacco guide strip into an integrated air chamber outer guide rail. This improved design can ensure the continuity of the suction tape passage and improve the resistance of tobacco conveying;

[0113] The integrated outer guide rail 3 of the application combines the original suction tape guide rail and the outer tobacco guide strip into an integrated air chamber outer guide rail. This improved design can ensure the continuity of the suction tape passage and improve the resistance of tobacco conveying;

[0114] Figure 17 The shaft sleeve I can ensure that the inner and outer passages of the air chamber guide rail and the cleaver guide rail are centered during installation;

[0115] Figures 18-21 The alloy support strip is a newly designed alloy support strip, which can stabilize the circulation of the suction tape;

[0116] Figure 23The shaft sleeve II limits the alloy support strip together with the spacer;

[0117] The application has the following structural characteristics:

[0118] 1. Double channel design: The biggest feature of the utility model is to adopt double channel structure; The integral inner guide rail, the integral middle guide rail and the integral outer guide rail are arranged in sequence and are closely connected through the fixing piece, forming two independent suction tape channels. The suction tape I and the suction tape II correspond to different suction channels respectively, so that the independence and stability of the suction tape during operation are ensured;

[0119] 2. Alloy support strip support: The inner wall of the air duct of the suction tape channel I and the suction tape channel II is respectively provided with an alloy support strip, and the support strip under the inner and outer guide rails (including the alloy support strips I, II and III of the air chamber outer channel) provides good support for the suction tape; The alloy support strip has high wear resistance, which can significantly improve the service life of the guide rail and reduce the friction and resistance of the suction tape during operation;

[0120] 3. Integrated structure: The integral inner guide rail, the integral middle guide rail and the integral outer guide rail are integrated non-segmented components. This structure simplifies the assembly process, reduces the joint friction and jamming phenomenon during operation, and improves the overall operation stability and precision.

[0121] The working process of the application includes the following process steps:

[0122] 1. Tobacco adsorption and conveying:

[0123] The tobacco is first sent into the suction system by the feeding device; In the suction channel I and the suction channel II, the suction tape I and the suction tape II run in two independent channels respectively; The negative pressure airflow acts on the lower part of the suction tape through the air chamber, and uniformly adsorbs the tobacco onto the surface of the suction tape;

[0124] 2. Double channel separation operation:

[0125] The suction tape I runs in the suction tape channel I between the integral inner guide rail and the integral middle guide rail, and the suction tape II runs in the suction tape channel II between the integral middle guide rail and the integral outer guide rail; The two channels are independent of each other, avoiding the interference of tobacco between different channels, thereby improving the conveying efficiency and uniformity of the tobacco;

[0126] 3. Alloy support strip support:

[0127] The alloy support strip is arranged on the inner wall of the lower air duct of the suction tape passage I, and alloy support strips I, II and III are arranged on the inner wall of the lower air duct of the suction tape passage II; the alloy support strip provides stable support for the suction tape, ensures that the suction tape is not easy to deform or deviate during operation, reduces friction resistance, and prolongs the service life of the equipment;

[0128] 4. Tobacco shaping and shedding:

[0129] During the operation of the suction tape, the tobacco is uniformly distributed on the suction tape under the action of the negative pressure of the air chamber; when passing through the end of the suction tape passage, the tobacco on the suction tape is further adjusted by the shaping device to make the thickness and distribution more uniform; then, the tobacco is separated from the suction tape by the shedding device and enters the tobacco filling system of the cigarette making machine to complete the cigarette forming;

[0130] 5. Suction tape circulation:

[0131] After the tobacco is adsorbed, transported and shed, the suction tape continues to circulate back to the starting position for the next tobacco adsorption process; the design of the double-channel guide rail ensures the smooth operation of the suction tape and is not affected by other channel tobaccos, maintaining the efficiency and continuity of the production process;

[0132] Based on the integrated double-channel guide rail and suction tape system, the uniformity of the tobacco during the suction forming and conveying process is ensured through reasonable air chamber design, alloy support strip support and double-channel separate operation, thereby improving the physical indicators of the cigarette, reducing the loss and waste tobacco in production.

[0133] Specifically, in an embodiment of the present application, the shapes of the integrated inner guide rail 1 and the integrated middle guide rail 2 are matched and symmetrically provided with inclined surfaces, and the gap formed between the inclined surfaces is the suction passage I; the structure of the embodiment has the following technical features:

[0134] The inclined surface gap design improves the smooth operation of the suction tape: through the optimization design of the inclined surface of the guide rail, the suction passage I has better airflow guiding ability, reduces the friction and resistance generated during the operation of the suction tape, and thus improves the operation efficiency and stability of the equipment; this design has a significant effect on prolonging the service life of the equipment and reducing equipment failures;

[0135] The gap size optimization improves the uniformity of tobacco adsorption and conveying: the gap design in the suction passage I can ensure the smoothness and continuity of the airflow, making the tobacco adsorption on the suction tape more uniform and avoiding tobacco accumulation or loosening; this detail design helps to improve the finished product quality of the cigarette, especially to reduce the empty head phenomenon of the cigarette and improve the filling degree of the cigarette;

[0136] The improved slope structure optimizes the distribution and forming effect of tobacco: the slope design on the guide rail makes the tobacco flow more smoothly during the suction process, improving the uniformity of tobacco distribution; this improvement significantly reduces tobacco waste during production and reduces the rejection rate of waste tobacco, thereby reducing production costs.

[0137] Specifically, in one embodiment of the present application, the shapes of the integrated inner guide rail 2 and the integrated outer guide rail 3 are matched, and the upper end surfaces are adjacent and connected by a flat surface; the structure of this embodiment has the following technical features:

[0138] Improved flatness of the suction belt channel: Because the upper end surfaces of the integrated inner guide rail and the integrated outer guide rail are connected by a flat surface, the smooth structure makes the suction belt run more smoothly in the guide rail channel, reducing the possibility of jamming or blocking of tobacco during transportation, thereby ensuring uniform distribution and smooth transportation of tobacco;

[0139] Uniformity and stability of airflow: The flat design of the upper end surface not only helps the smooth running of the suction belt, but also further optimizes the airflow distribution of the suction channel; through the close fit between the guide rails, the airflow can flow more uniformly in the suction channel, ensuring that the tobacco is uniformly adsorbed on the suction belt; this design optimizes the effect of negative pressure, making the distribution of tobacco on the suction belt more consistent, thereby improving the finished product quality of the cigarette;

[0140] The adjacent connection of the upper end surface by a flat surface reduces the loose and empty head phenomenon of tobacco: The flat connection design helps to maintain the stability of the suction channel, avoiding airflow turbulence or tobacco accumulation problems caused by irregular designs on the inner wall of the channel; this design significantly reduces the falling of tobacco on the point of the cigarette, loose tobacco (i.e. empty head phenomenon), thereby improving the consistency of the filling degree and draw resistance of the cigarette;

[0141] The adjacent connection of the upper end surface by a flat surface achieves the improvement of physical indicators of the cigarette: Through the flat design, the overall flatness of the suction channel is improved, making the adsorption and transportation process of tobacco more smooth and uniform; this uniformity directly affects the performance of key physical indicators such as single cigarette weight, weight SD, and draw resistance SD, helping cigarette companies better control product quality during production.

[0142] Specifically, in one embodiment of the present application, the fixing member includes a spacer 9, a shaft sleeve II 10, and a threaded member 11, the shaft sleeve II 10 is sleeved on the threaded member 11, and the spacer 9 is arranged above the shaft sleeve II 10;

[0143] The stability of the guide rail assembly is enhanced by the combination of the shaft sleeve II and the threaded part, which can maintain higher stability during operation. The positioning function of the shaft sleeve II ensures accurate alignment of the guide rails during installation, and the threaded part provides continuous fastening force through the spiral structure, thereby ensuring firm connection between the guide rails and avoiding loosening or displacement due to vibration or external force during operation;

[0144] The adjustable characteristics of the shaft sleeve II and the threaded part allow users to easily re-tighten or adjust the guide rails after a period of device operation, thereby extending the service life of the device. In addition, the presence of the spacer can avoid frequent replacement of components due to wear, further reducing the maintenance cost of the device;

[0145] The positioning accuracy of the guide rails is improved. The positioning error between the guide rails is greatly reduced through the combination of the shaft sleeve II and the threaded part. This precise positioning directly affects the size consistency of the tobacco band passage and the tobacco suction passage. The smooth fastening between the guide rails makes the operation of the tobacco band in the guide rails more smooth, thereby improving the uniformity of tobacco adsorption and reducing the possibility of jamming or unevenness during tobacco conveying;

[0146] The physical indicators of the cigarette are improved. Due to the enhanced stability of the guide rails, the airflow distribution in the tobacco suction passage is more uniform, and the thickness consistency of the tobacco on the tobacco band is improved. This improvement directly improves the physical indicators of the cigarette, such as single weight, weight SD, and draw resistance SD, which helps to achieve higher quality standards for cigarette products;

[0147] The wear and failure rate of the guide rails is reduced. The spacer reduces the friction between the internal components of the guide rail assembly, and the combination of the shaft sleeve II and the threaded part ensures the fastening and stability of the components. This design effectively reduces the wear of the guide rails and reduces the failure rate of the device, thereby improving the service life of the device. This structure is particularly important for the stability of the device during high-speed operation of the tobacco suction process;

[0148] The continuity of the device operation is improved. Due to the more stable fixing structure of the shaft sleeve II and the threaded part, the stability of the guide rail assembly is significantly improved, thereby improving the continuity of the device operation. This design can reduce downtime during operation, avoid frequent adjustment and maintenance due to loosening or failure, and further improve the work efficiency of the cigarette production line.

[0149] Specifically, in an embodiment of the present application, the inner guide rail 1 and the middle guide rail 2 are fixed by the threaded part 11, and the middle guide rail 2 and the outer guide rail 3 are fixed by the threaded part 11. The wind chamber outer alloy strip I 5, the wind chamber outer alloy strip II 6, the wind chamber outer alloy strip III 7, and the wind chamber inner alloy strip 8 are rectangular long thin-walled parts;

[0150] In the embodiments of the present application, the inner guide rail and the middle guide rail, and the middle guide rail and the outer guide rail are fixed by threaded fasteners, realizing the fastening and stable connection of the guide rails; the outer alloy strips I, II and III of the air chamber and the inner alloy strip of the air chamber are rectangular long thin-walled pieces, which can provide uniform support and adapt to the size and shape of the guide rail channel, ensuring the overall strength and stability of the guide rail structure;

[0151] The use of threaded fasteners enhances the stability of the guide rail assembly, avoiding the risk of loosening or displacement between the guide rails, thereby ensuring smooth conveying of the tobacco tape and tobacco; the design of the rectangular thin-walled strips makes the support inside the air chamber guide rail more uniform, reducing the friction between the tobacco tape and the guide rail, ensuring uniform adsorption of tobacco, improving the physical indicators of the cigarette such as single weight and draw resistance SD, and improving the operation efficiency and production quality of the equipment.

[0152] Specifically, in one embodiment of the present application, the outer alloy strip I 5, the outer alloy strip II 6, the outer alloy strip III 7 of the air chamber and the inner alloy strip 8 of the air chamber are provided with mounting holes at both ends; the mounting holes facilitate the accurate fixing of the strips and other components of the guide rail assembly, ensuring the stability of the strips and the accuracy of the mounting position. At the same time, the design of the mounting holes simplifies the assembly and disassembly process of the strips, enhancing the overall structural strength of the assembly;

[0153] By providing mounting holes at both ends of the strips, the firm fixation of the strips in the air chamber is ensured, preventing loosening or displacement of the strips due to vibration or external force during operation. This not only improves the smoothness of the tobacco tape operation, but also effectively ensures the uniform distribution of tobacco during the conveying process, reducing the phenomenon of loose tobacco caused by equipment failure or deviation, thereby improving the physical indicators of the cigarette and optimizing the production efficiency.

[0154] Specifically, in one embodiment of the present application, the spacer 9 is an annular piece; the shaft sleeve II 10 is a cylindrical piece, and a protrusion or a protruding annular piece is provided on the shaft sleeve II 10 for supporting the spacer 9 and isolating the tobacco tape; the annular spacer design cooperates with the cylindrical shaft sleeve II, enabling the spacer to be stably supported, while the protrusion or protruding annular piece provides additional positioning function, ensuring the accurate separation of the running path of the tobacco tape and the guide rail channel;

[0155] This structure design effectively supports the spacer through the protruding annular piece, avoiding direct contact between the tobacco tape and other components, reducing friction and wear, and prolonging the service life of the tobacco tape; the isolation design ensures that the tobacco tape maintains a smooth motion trajectory during operation, reducing the shaking and deviation of the tobacco tape, thereby improving the uniform adsorption effect of the tobacco and further optimizing the physical indicators of the cigarette such as draw resistance and weight consistency.

[0156] Specifically, in one embodiment of the present application, one end of the integrated inner guide rail 2 and the integrated outer guide rail 3 is provided with a shaft sleeve I 4, which is used for positioning;

[0157] The shaft sleeve I 4 includes a horizontal hole, which is perpendicular to the central axis of the hole, and a vertical cylinder is arranged on the outer wall of the horizontal hole; a raised platform is arranged adjacent to the vertical cylinder on the outer wall of the horizontal hole, the raised platform narrows along the width of the outer end, and the central axis of the raised platform is perpendicular to the central axis of the horizontal hole and the central axis of the vertical cylinder;

[0158] The use of the shaft sleeve I in the guide rail assembly makes the installation and maintenance process of the guide rail more convenient and efficient. Through the positioning function, complex adjustments are not required during assembly, and the shaft sleeve can automatically ensure the accurate alignment of the guide rail assembly, thereby reducing assembly errors and improving production efficiency. At the same time, during equipment maintenance, the shaft sleeve I also helps to quickly disassemble and replace the guide rail, reducing equipment downtime;

[0159] Through the positioning of the shaft sleeve I, the guide rail can maintain stability during operation, reducing the problem of the suction tape deviating from the track due to guide rail deviation or vibration; this technical feature directly affects the smooth operation of the suction tape and the uniform adsorption of tobacco, ensuring that the tobacco can be smoothly conveyed in the channel, avoiding uneven distribution of tobacco or conveying blockage;

[0160] The design of the shaft sleeve I is simple and efficient, providing precise positioning function without increasing the complexity of the guide rail; this design improves the running stability of the guide rail assembly, avoiding problems such as loose guide rail and misalignment; by ensuring the consistency of the guide rail and the suction channel, the shaft sleeve I provides protection for the stable conveying of tobacco;

[0161] Due to the positioning effect of the shaft sleeve I, the wear and displacement of the guide rail assembly are effectively reduced, reducing the maintenance frequency and cost of the equipment; at the same time, precise positioning also reduces the scrap rate caused by uneven tobacco or equipment failure during production, further reducing production consumption.

[0162] Specifically, in one embodiment of the present application, the threaded part 11 is an M6 thin cylindrical head screw.

[0163] Specifically, in one embodiment of the present application, the present application relates to a process for absorbing tobacco shreds for cigarette tobacco, and belongs to a tobacco shred absorbing and forming conveying device;

[0164] The process for absorbing tobacco shreds for cigarette tobacco is a key step in the process of tobacco absorption in cigarette production, which uniformly conveys and adheres tobacco shreds to the suction tape through specific equipment and processes, ensuring that the tobacco shreds are accurately filled into the cigarette; the process is roughly as follows:

[0165] 1. Tobacco supply:

[0166] After the tobacco is cut, it is fed into the feeding device of the tobacco suction equipment. The tobacco is usually finely processed to ensure that its size, moisture content, and other parameters meet the requirements of the subsequent process;

[0167] 2. Loose tobacco processing:

[0168] Before entering the tobacco suction belt, the tobacco is subjected to loose processing to ensure that it does not form clumps, facilitating uniform delivery in the subsequent process. The loose processing equipment usually uses air flow or mechanical means to turn and loosen the tobacco;

[0169] 3. Tobacco suction belt suction:

[0170] The tobacco suction belt is composed of a continuous circulating conveyor belt and a suction system. The tobacco adheres to the lower part of the suction belt under the action of air flow or gravity. The air flow on the suction belt creates negative pressure through the air chamber, which sucks the loose tobacco onto the belt surface, forming a uniform tobacco layer;

[0171] 4. Tobacco shaping:

[0172] After the tobacco is sucked onto the suction belt, it is further distributed uniformly by the shaping device to ensure consistent thickness at every point. This is to ensure uniform distribution of tobacco when filling into cigarettes, avoiding problems such as empty head or uneven density;

[0173] 5. Tobacco delivery:

[0174] The suction belt smoothly delivers the sucked tobacco to the filling device of the cigarette machine. During the delivery process, the channel design and transmission mechanism of the suction belt play a key role in ensuring smooth, non-accumulative, or lossless delivery of the tobacco;

[0175] 6. Tobacco filling:

[0176] The suction belt delivers the tobacco to the forming part of the cigarette machine, and the tobacco is uniformly filled into the cigarette paper after leaving the suction belt, forming a cigarette;

[0177] 7. Suction belt circulation:

[0178] After completing the tobacco delivery, the suction belt circulates back to the initial position to continue the next suction and delivery process;

[0179] This process requires precise equipment control to ensure the stability of the tobacco during the entire delivery and filling process, thereby improving the physical indicators and quality of the finished cigarettes;

[0180] Equipment used in the tobacco suction process: In cigarette production, the tobacco suction process involves multiple devices that work together to ensure uniform suction, delivery, and filling of the tobacco. The following are the main equipment used and their functions:

[0181] 1. Tobacco feeding device:

[0182] This is the starting point of the cut tobacco process, responsible for evenly delivering the cut tobacco processed to the entrance of the tape; the feeding device usually includes a vibrating feeder or a screw conveyor, ensuring the flowability and continuity of the tobacco supply;

[0183] 2. Tobacco loosening machine:

[0184] The loosening machine is used to loosen the tobacco to prevent clumping during storage and feeding; it makes the tobacco more loose and uniform through mechanical stirring or air flow treatment, facilitating the subsequent adsorption of the tape;

[0185] 3. Tape:

[0186] The tape is the core equipment for tobacco delivery; it consists of a continuous conveyor belt and an air suction system, and the belt surface is usually porous; the loose tobacco is evenly adsorbed on the belt surface by the negative pressure generated by the air suction system; the material of the tape usually has wear resistance and stability, which can ensure long-term operation;

[0187] 4. Suction air chamber:

[0188] The air chamber is used in conjunction with the tape to provide stable negative pressure airflow, allowing the tobacco to be firmly adsorbed on the surface of the tape; the design of the air chamber is crucial to ensure the uniformity of tobacco adsorption and reduce tobacco loss;

[0189] 5. Tobacco shaper:

[0190] The shaper is located downstream of the tape and is responsible for further spreading the tobacco adsorbed on the tape; it usually adjusts the thickness of the adsorbed layer of tobacco through mechanical means or airflow, ensuring consistent density of each part of the tobacco;

[0191] 6. Tape guide system:

[0192] The guide system is used to guide the smooth operation of the tape and ensure the flatness of the channel during tobacco delivery; it includes guide rails and supporting rollers to ensure the smooth and precise operation of the tape, avoiding deviation or instability;

[0193] 7. Tobacco shedding device:

[0194] When the tape delivers tobacco to the cigarette machine, the shedding device helps the tobacco to separate from the tape and enter the cigarette filling device; the shedding device changes the airflow direction or uses mechanical scrapers to ensure smooth filling of the tobacco into the cigarette paper;

[0195] 8. Tobacco filling device:

[0196] It is a component of the cigarette making machine, and the tobacco carried by the tobacco suction belt is evenly filled into the predetermined cigarette paper to form a complete cigarette;

[0197] 9. Dust removal and waste treatment equipment:

[0198] During the tobacco conveying process, tobacco crumbs or dust may be generated; the dust removal equipment removes these impurities through adsorption or filtration, keeps the production environment clean, and reduces the impact of waste on the production line;

[0199] 10. Automatic control system:

[0200] The entire process is accurately adjusted by an automatic control system, including the tobacco supply speed, suction intensity, and running speed of the tobacco suction belt, to ensure the stability and accuracy of the entire tobacco suction process;

[0201] These devices work together to ensure smooth tobacco conveying, uniform adsorption, and accurate filling during the entire tobacco suction process, thereby improving cigarette production efficiency and product quality;

[0202] The present application improves the guide rail assembly by combining the original tobacco suction belt guide rail and the tobacco guide rail into one, ensuring the parallelism of the tobacco suction belt channel and allowing the tobacco suction belt to circulate more smoothly; at the same time, it can better ensure the perpendicularity of the tobacco suction belt channel and the tobacco channel, allowing the tobacco to be more evenly adsorbed under the tobacco suction belt, thereby providing protection for improving the physical indicators of the cigarette;

[0203] The original tobacco suction belt guide rail and the tobacco suction wind chamber guide rail are combined into an integrated wind chamber guide rail; the ceramic rollers supporting the tobacco suction belt of the wind chamber guide rail are replaced with guide strips;

[0204] The original tobacco suction belt guide rail and the tobacco suction wind chamber guide rail are combined into an integrated wind chamber guide rail; this design can ensure the continuity of the tobacco suction belt channel and reduce the resistance of tobacco conveying, making it more reasonable than the original structure and prolonging the service life; the guide rail material structure is changed, the original tool steel surface is carburized and replaced with embedded hard alloy, the guide rail is more wear-resistant; the ceramic rollers are removed, and the roller structure supporting the tobacco suction belt of the wind chamber guide rail is improved to a guide strip structure; the thickness of the tobacco on the tobacco suction belt is more balanced, ensuring the uniformity of the tobacco filling in the cigarette, and avoiding the transmission resistance of the tobacco suction belt caused by the poor rotation of the rollers;

[0205] The technical solution of the present application has been verified to have good use effect, improve the physical indicators such as cigarette weight SD and draw resistance SD, and improve the phenomena of tobacco falling from the lit end of the cigarette, loose tobacco, and empty head of the cigarette, thereby reducing the rejection rate of waste tobacco, reducing production consumption, and improving the continuity of equipment operation and production efficiency; 2. The improved integrated wind chamber guide rail optimizes the channel size, makes the parallelism of the tobacco suction belt channel and the perpendicularity of the tobacco channel better, and makes the tobacco run more stably in the guide rail channel;

[0206] The physical indexes of the single weight, weight SD, and suction resistance SD of the finished cigarette produced by the newly introduced ZJ116 high-speed machine are improved, the falling of the tobacco at the point of the cigarette is improved, the loose tobacco is improved, the rejection rate of the waste tobacco is reduced, the production consumption is reduced, the continuity of the equipment operation and the production efficiency are improved, the roller transmission is used in the original design of the suction belt channel, the rotation is difficult after a period of time, and the hidden danger of the tobacco transmission is caused;

[0207] The tobacco is adsorbed by the negative pressure air and runs in the channel, the optimization of the channel size, the parallelism of the suction belt channel and the verticality of the tobacco channel can be ensured by one-time processing, the suction belt channel and the tobacco channel of the original design are used in splicing combination, and the parallelism and the verticality of the channel are difficult to ensure, the surface of the tobacco channel is mirror polished to reduce the resistance of the tobacco running,

[0208] The original structure of the suction belt is supported by a plurality of discontinuous ceramic rollers, due to the action of the negative pressure air, the suction belt forms a wave shape in the running process, as shown in Figure 24 The adsorbed tobacco is uneven, which affects the physical indexes of the cigarette, the alloy support strip guide rail supports the suction belt continuously, the suction belt runs stably, and the adsorption of the tobacco is more uniform, so that the physical indexes of the single weight, weight SD, and suction resistance SD of the cigarette are improved, the falling of the tobacco at the point of the cigarette is improved, the loose tobacco (i.e. the empty head of the cigarette) is improved, the rejection rate of the waste tobacco is reduced, the continuity of the equipment operation and the production efficiency are improved;

[0209] The application can also change the material structure of the guide rail, replace the original tool steel surface carburizing with hard alloy inlaying, improve the processing technology of the guide rail material, avoid the deformation caused by heat treatment, make the tobacco conveying more smooth, the guide rail more wear-resistant, and the service life more than 8 years.

[0210] The above is only the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A tobacco cut filler drawing and forming conveyor dual track guide, characterised in that, The integrated inner guide rail (1), the integrated middle guide rail (2) and the integrated outer guide rail (3) are sequentially and adjacently arranged, and the integrated inner guide rail (1), the integrated middle guide rail (2) and the integrated outer guide rail (3) are integrated and non-segmented components. The integrated inner guide rail (1) and the integrated middle guide rail (2) are provided with a fixing member, so that a suction belt passage I is formed between the integrated inner guide rail (1) and the integrated middle guide rail (2), and a suction passage I is formed above the suction belt I. The integrated middle guide rail (2) and the integrated outer guide rail (3) are provided with a fixing member, so that a suction belt passage II is formed between the integrated middle guide rail (2) and the integrated outer guide rail (3), and a suction passage II is formed above the suction belt II. The inner wall of the air duct below the suction belt passage I of the integrated inner guide rail (1) and the integrated middle guide rail (2) is provided with an air chamber inner duct alloy support strip (8). The inner wall of the air duct below the suction belt passage II of the integrated middle guide rail (2) and the integrated outer guide rail (3) is provided with an air chamber outer duct alloy support strip I (5), an air chamber outer duct alloy support strip II (6) and an air chamber outer duct alloy support strip III (7). The integrated inner guide rail (1), the integrated middle guide rail (2) and the integrated outer guide rail (3) are connected through the fixing member.

2. A twin channel tobacco rod drawing, forming and conveying track as claimed in claim 1, characterized in that The integrated inner guide rail (1) and the integrated middle guide rail (2) are symmetrically provided with inclined surfaces in a matched manner, and the gap formed between the inclined surfaces is the suction passage I.

3. A twin channel tobacco rod drawing, forming and conveying track as claimed in claim 1, characterized in that, The integrated middle guide rail (2) and the integrated outer guide rail (3) are symmetrically provided with flat surfaces in a matched manner.

4. A dual pass tobacco rod drawing, forming and conveying track as claimed in claim 1, wherein, The fixing member comprises a spacer (9), a shaft sleeve II (10) and a threaded member (11), the shaft sleeve II (10) is sleeved on the threaded member (11), and the spacer (9) is arranged above the shaft sleeve II (10).

5. A dual pass tobacco rod draw forming and conveying track as claimed in claim 1 wherein, The integrated inner guide rail (1) and the integrated middle guide rail (2) are fixed through the threaded member (11), and the integrated middle guide rail (2) and the integrated outer guide rail (3) are fixed through the threaded member (11).

6. A dual pass tobacco strand drawing and forming rail as claimed in claim 1 wherein, The air chamber outer duct alloy support strip I (5), the air chamber outer duct alloy support strip II (6), the air chamber outer duct alloy support strip III (7) and the air chamber inner duct alloy support strip (8) are rectangular long thin-walled members.

7. A dual pass tobacco strand drawing and forming rail as claimed in claim 1 wherein, The air chamber outer duct alloy support strip I (5), the air chamber outer duct alloy support strip II (6), the air chamber outer duct alloy support strip III (7) and the air chamber inner duct alloy support strip (8) are provided with mounting holes at both ends.

8. A dual pass tobacco strand drawing and forming rail as claimed in claim 1 wherein, The spacer (9) is a ring-shaped member.

9. A dual pass tobacco strand drawing and forming rail as claimed in claim 1 wherein, The shaft sleeve II (10) is a cylindrical member, and a protrusion or a protrusion ring-shaped member is arranged on the shaft sleeve II (10) to support the spacer (9) and isolate the suction belt.

10. A dual pass tobacco rod draw forming and conveying track as claimed in claim 1 wherein, One end of the integrated middle guide rail (2) and the integrated outer guide rail (3) is provided with a shaft sleeve I (4) for positioning. The shaft sleeve I (4) comprises a horizontal hole, a vertical cylinder is arranged on the outer wall of the horizontal hole, a protruding table is arranged on the outer wall of the horizontal hole adjacent to the vertical cylinder, the protruding table is narrowed along the width of the outer end, and the central axis of the protruding table is perpendicular to the central axis of the horizontal hole and the central axis of the vertical cylinder.

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