Fragrance device for filter rod

Abstract

The application relates to the technical field of tobacco processing, in particular to a filter rod incense line perfuming device. The filter rod incense line perfuming device comprises a base, a perfuming box, a perfuming mechanism and a tension adjusting mechanism. The perfuming box, the perfuming mechanism and the tension adjusting mechanism are all installed on the base. The perfuming mechanism comprises a lifting plate, a rotating shaft and a perfuming wheel. The lifting plate is connected to the base, the rotating shaft is connected to the lifting plate and located above the perfuming box, and the perfuming wheel is sleeved on the outer periphery of the rotating shaft. The tension adjusting mechanism is connected with a tensioning wheel, and the tension adjusting mechanism can drive the tensioning wheel to rotate, so that the tensioning wheel can adjust the tensioning degree of the incense line in cooperation with the perfuming wheel. The perfuming wheel can rotate around the axis of the rotating shaft and can move along the height direction of the perfuming box towards the direction of approaching or moving away from the perfuming box. The filter rod incense line perfuming device provided by the application solves the problems that the incense line tension control effect of the existing perfuming mechanism is poor and the perfuming amount cannot be flexibly adjusted.

Description

Technical Field

[0001] This application relates to the field of tobacco processing technology, and in particular to a filter rod and fragrance adding device. Background Technology

[0002] In the tobacco processing industry, flavoring filter rods is a crucial step in improving cigarette quality and taste. However, traditional filter rod flavoring systems using tubular flavoring threads struggle to precisely control the tension of the flavoring thread during delivery, resulting in threads that are either too loose or too tight. Loose threads can easily become tangled or knotted, affecting the continuity and stability of flavoring, while overly tight threads may break, causing production interruptions and material waste. Furthermore, existing flavoring mechanisms also struggle to flexibly adjust the amount and effect of flavoring according to different production needs, thus affecting the uniformity of flavoring in the filter rods and the consistency of product quality. Utility Model Content

[0003] Therefore, it is necessary to provide a filter rod incense thread incense adding device to solve the problems of poor incense thread tension control and inability to flexibly adjust the amount of incense added in existing incense adding mechanisms.

[0004] This application provides a fragrance-adding device for a filter rod incense thread. The device includes a base, a fragrance box, a fragrance-adding mechanism, and a tension adjustment mechanism. The fragrance box, the fragrance-adding mechanism, and the tension adjustment mechanism are all mounted on the base. The fragrance box is used to hold fragrance that can adhere to the incense thread. The fragrance-adding mechanism includes a lifting plate, a rotating shaft, and a fragrance-adding wheel. The lifting plate is connected to the base, and the rotating shaft is connected to the lifting plate and located above the fragrance box. The fragrance-adding wheel is sleeved on the outer periphery of the rotating shaft and is used to contact and guide the movement of the incense thread. A tensioning wheel is connected to the tension adjustment mechanism, and the tension adjustment mechanism can drive the tensioning wheel to rotate so that the tensioning wheel can cooperate with the fragrance-adding wheel to adjust the tension of the incense thread. The fragrance-adding wheel can rotate around the axis of the rotating shaft and can move towards or away from the fragrance box along the height direction of the fragrance box.

[0005] In one embodiment, the fragrance filter stick and fragrance adding device further includes a track section and a slider section. One of the track section and the slider section is connected to the lifting plate, and the other is connected to the base. The track section and the slider section are connected in cooperation to drive the lifting plate to move along the height direction of the fragrance adding box.

[0006] In one embodiment, the rotating shaft is rotatably connected to the lifting plate, and an anti-rotation structure is provided between the rotating shaft and the fragrance wheel. The anti-rotation structure is used to prevent the fragrance wheel from rotating relative to the rotating shaft; wherein, the anti-rotation structure is configured as a flat key or an anti-rotation plane.

[0007] In one embodiment, the surface of the fragrance wheel is provided with grooves or textures to increase the friction of the fragrance wheel.

[0008] In one embodiment, the tension adjustment mechanism includes a wheel seat and a rotating arm. The wheel seat is mounted on the base, and one end of the rotating arm is rotatably connected to the wheel seat, while the other end is connected to the tensioning wheel.

[0009] In one embodiment, the tension adjustment mechanism further includes a drive member mounted on the wheel seat, the output end of the drive member being connected to the rotating arm to drive the rotating arm and the tension wheel to rotate.

[0010] In one embodiment, an auxiliary shaft is connected to the side of the wheel seat, and a sliding groove is provided on the rotating arm; the tension adjustment mechanism further includes an adjustment assembly, which includes an inner support rod, an outer sleeve, and an elastic element. One end of the inner support rod is inserted into the inside of the outer sleeve, and the other end forms a cam opening. The cam opening is sleeved on the outer periphery of the auxiliary shaft and movably engages with the auxiliary shaft; the elastic element is installed in the outer sleeve and is connected to both the inner support rod and the outer sleeve. A sliding rod is connected to the end of the outer sleeve away from the inner support rod. The sliding rod is inserted into the sliding groove and can slide along the sliding groove.

[0011] In one embodiment, the slide is configured as a T-slot, and the shape of the portion connecting the slide rod to the slide is the same as the shape of the slide.

[0012] In one embodiment, the fragrance-adding device for the filter rod further includes a tensioning mechanism, which includes a guide plate and a tightening roller. The guide plate is connected to the base, and the tightening roller is rotatably connected to the guide plate. There are multiple tightening rollers, which are arranged at intervals in a preset shape to contact and tighten the fragrance thread. The axes of the tightening roller, the fragrance-adding wheel, and the tensioning wheel are arranged in parallel.

[0013] In one embodiment, there are two guide plates, which are arranged opposite to each other, and the guide plates are movably connected to the base along the axial direction of the tightening roller, and the tightening roller is telescopically mounted between the two guide plates; and / or, the tightening roller is movably connected to the guide plates to adjust the spacing between adjacent tightening rollers.

[0014] Compared with existing technologies, the fragrance-adding device for filter rods provided in this application allows the lower part of the fragrance-adding wheel to contact the fragrance inside the fragrance box when the fragrance-adding wheel rotates, achieving fragrance adhesion on the fragrance-adding wheel. At this time, if the fragrance thread drawn from the external raw material roll contacts the rotating fragrance-adding wheel, the fragrance can be smoothly transferred to the fragrance thread, completing the fragrance-adding operation. Furthermore, as the fragrance-adding wheel moves along the height direction of the fragrance box, the contact angle and force with the fragrance thread can be adjusted. Simultaneously, the tension adjustment mechanism drives the tensioning wheel to move and adjust the tension of the fragrance thread. In this way, precise control of the fragrance thread tension can be achieved, preventing the fragrance thread from slackening or breaking, ensuring the continuity and stability of the fragrance-adding process, and also achieving more uniform and precise fragrance-adding. The amount and effect of fragrance can be flexibly adjusted according to different production needs, improving the uniformity of fragrance-adding to the filter rod and the consistency of product quality. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a filter rod fragrance thread fragrance device according to an embodiment of this application;

[0017] Figure 2 A schematic diagram of the tension adjustment mechanism according to an embodiment of this application;

[0018] Figure 3 A schematic diagram of the structure of an adjustment component according to an embodiment of this application;

[0019] Figure 4 A cross-sectional view of a partial structure of an adjustment component according to an embodiment of this application.

[0020] The symbols in the diagram represent the following meanings:

[0021] 100. Filter rod incense thread fragrance device; 10. Base; 20. Fragrance box; 30. Fragrance adding mechanism; 31. Lifting plate; 311. Clearance groove; 32. Rotating shaft; 33. Fragrance adding wheel; 40. Tension adjustment mechanism; 41. Tensioning wheel; 42. Wheel seat; 421. Auxiliary shaft; 43. Rotating arm; 44. Driving component; 45. Adjustment assembly; 451. Inner support rod; 4511. Cam opening; 452. Outer sleeve; 4521. Slide rod; 4522. Carrier block; 453. Elastic component; 46. Fixed seat; 50. Tensioning mechanism; 51. Guide plate; 52. Tensioning roller. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0027] In the cigarette manufacturing industry, flavoring filter rods is a crucial step in improving cigarette quality and taste. However, traditional filter rod flavoring systems using tubular flavoring threads struggle to precisely control the tension of the flavoring thread during delivery, resulting in threads that are either too loose or too tight. Loose threads can easily become tangled or knotted, affecting the continuity and stability of flavoring, while overly tight threads may break, causing production interruptions and material waste. Furthermore, existing flavoring mechanisms also struggle to flexibly adjust the amount and effect of flavoring according to different production needs, thus affecting the uniformity of flavoring in the filter rods and the consistency of product quality.

[0028] Please see Figures 1-4 To address the problems of poor tension control and inflexible adjustment of flavoring amount in existing flavoring mechanisms, this application provides a filter rod flavoring device 100. The filter rod flavoring device 100 includes a base 10, a flavoring box 20, a flavoring mechanism 30, and a tension adjustment mechanism 40. The flavoring box 20, the flavoring mechanism 30, and the tension adjustment mechanism 40 are all mounted on the base 10. The flavoring box 20 is used to hold the flavoring that can adhere to the flavoring thread. The flavoring thread, added to the cigarette filter rod, can enhance the flavor of the cigarette.

[0029] Specifically, the base 10, as the basic support component of the entire fragrance-adding mechanism 30, needs to ensure high structural strength. For example, it can be cast from high-strength low-alloy steel. Furthermore, the surface of the base 10 can be milled and ground to ensure flatness, providing a more stable mounting reference for other components. In addition, the base 10 can be fastened to the ground with bolts to prevent excessive vibration during equipment operation. Of course, pulleys can also be connected to the bottom of the base 10 so that the entire equipment can be moved to a preset position before being fastened to the ground.

[0030] Furthermore, the fragrance box 20 can be injection molded from transparent polycarbonate material for easy processing and observation. A level gauge for monitoring the remaining fragrance level can be installed on the side of the fragrance box 20, and an internal heat preservation device ensures the fragrance is stably maintained within a preset temperature range, such as 25℃~35℃. When the temperature is lower than the set value, the heating wire is activated; when the temperature is higher than the set value, a fan is activated for heat dissipation, thereby reducing the temperature fluctuation range of the fragrance, such as controlling it within 1℃, effectively ensuring the fluidity of the fragrance.

[0031] In one embodiment, such as Figure 1As shown, the fragrance-adding mechanism 30 includes a lifting plate 31, a rotating shaft 32, and a fragrance-adding wheel 33. The lifting plate 31 is connected to the base 10, and the rotating shaft 32 is connected to the lifting plate 31 and located above the fragrance box 20. The fragrance-adding wheel 33 is sleeved on the outer periphery of the rotating shaft 32 and is used to contact and guide the movement of the fragrance thread. A tension adjustment mechanism 40 is connected to a tensioning wheel 41, and the tension adjustment mechanism 40 can drive the tensioning wheel 41 to rotate so that the tensioning wheel 41 can cooperate with the fragrance-adding wheel 33 to adjust the tension of the fragrance thread. The fragrance-adding wheel 33 can rotate around the axis of the rotating shaft 32 and can move towards or away from the fragrance box 20 along the height direction of the fragrance box 20.

[0032] It is understood that when the fragrance wheel 33 provided in this application rotates, the lower part of the fragrance wheel 33 will contact the fragrance inside the fragrance box 20, achieving the adhesion of the fragrance to the fragrance wheel 33. At this time, if the fragrance thread drawn from the external raw material roll contacts the rotating fragrance wheel 33, the fragrance can be smoothly transferred to the fragrance thread, completing the fragrance application operation. Furthermore, as the fragrance wheel 33 moves along the height direction of the fragrance box 20, it can adjust the contact angle and force with the fragrance thread. At the same time, the tension adjustment mechanism 40 drives the tensioning wheel 41 to move and adjust the tension of the fragrance thread. In this way, precise control of the fragrance thread tension can be achieved, preventing the fragrance thread from becoming loose or breaking, ensuring the continuity and stability of the fragrance application process, and also achieving more uniform and precise fragrance application. The amount and effect of fragrance can be flexibly adjusted according to different production needs, improving the uniformity of fragrance application on the filter rod and the consistency of product quality.

[0033] Specifically, there are two lifting plates 31, and the two lifting plates 31 are respectively located on opposite sides of the incense box 20. The two ends of the rotating shaft 32 are respectively connected to the two lifting plates 31 to improve the stability of the structure.

[0034] Furthermore, the fragrance-adding device 100 also includes a track section (not shown) and a slider section (not shown). One of the track section and the slider section is connected to the lifting plate 31, and the other is connected to the base 10. The track section and the slider section are connected in cooperation to drive the lifting plate 31 to move along the height direction of the fragrance-adding box 20. In this way, the lifting plate 31, the rotating shaft 32, and the fragrance-adding wheel 33 can be moved relative to the fragrance-adding box 20, thereby adjusting the contact angle and force between the fragrance thread and the fragrance-adding wheel 33.

[0035] However, this is not the only option. In other embodiments, the track and slider can be positioned between the lifting plate 31 and the rotating shaft 32, thereby enabling the rotating shaft 32 to move relative to the lifting plate 31. The specific arrangement can be tailored to actual needs. This application uses an example where the track is located on the base 10 and the slider is located on the lifting plate 31. Based on this, a clearance groove 311 can be provided on the lifting plate 31 to accommodate the track, reducing overall space occupation. The slider can be driven by an electric push rod on the track, making the drive simple, quick, and enabling precise lifting.

[0036] In one embodiment, the rotating shaft 32 is rotatably connected to the lifting plate 31, and an anti-rotation structure is provided between the rotating shaft 32 and the incense wheel 33 to prevent the incense wheel 33 from rotating relative to the rotating shaft 32. The anti-rotation structure is configured as a flat key or an anti-rotation plane. In this way, the incense wheel 33 will not rotate relative to the rotating shaft 32, ensuring that the incense wheel 33 can rotate synchronously with the rotating shaft 32, thus improving the reliability of the structure. It should be noted that when connecting the rotating shaft 32 and the incense wheel 33 with a flat key, corresponding grooves can be machined on the outer wall of the rotating shaft 32 and the inner wall of the incense wheel 33, with the flat key extending into the two grooves respectively to achieve the anti-rotation effect.

[0037] To improve the smoothness of rotation of the rotating shaft 32 relative to the lifting plate 31, a bearing (not shown) can be provided between the end of the rotating shaft 32 and the lifting plate 31, and a bearing housing is provided on the lifting plate 31. The bearing is installed in the bearing housing to improve the installation strength and control the radial runout tolerance of the rotating shaft 32. Here, the bearing housing can be fixed to the lifting plate 31 or the slider part by bolts, wherein the bearing is preferably set as an angular contact ball bearing.

[0038] In one embodiment, the surface of the fragrance wheel 33 is provided with grooves or textures to increase the friction of the fragrance wheel 33, thereby increasing the contact area and friction between the fragrance wheel 33 and the fragrance thread, and improving the reliability of fragrance adhesion.

[0039] Specifically, the fragrance wheel 33 can be composed of an aluminum alloy hub and a nitrile rubber coating layer. The grooves or textures are set on the nitrile rubber coating layer, which is simple to process. The grooves can be set as spirals to increase the coverage area of ​​the grooves on the fragrance wheel 33 and ensure reliable contact between the fragrance wheel 33 and the fragrance thread.

[0040] In one embodiment, such as Figure 1 and Figure 2 As shown, the tension adjustment mechanism 40 includes a wheel seat 42 and a rotating arm 43. The wheel seat 42 is mounted on the base 10, and one end of the rotating arm 43 is rotatably connected to the wheel seat 42, while the other end is connected to the tension wheel 41. Thus, the rotating arm 43 can drive the tension wheel 41 to move during rotation, allowing the tension wheel 41 to adjust the force on the incense thread.

[0041] Specifically, a bearing is installed inside the wheel seat 42, and the rotating arm 43 is positioned within the bearing via a shoulder and retaining ring to provide support and ensure coaxiality. Similarly, the tensioning wheel 41 can be formed by coating an aluminum alloy hub with polyurethane elastomer and fixed to the rotating arm 43 with set screws to ensure a secure installation. The surface roughness Ra of the tensioning wheel 41 is ≤0.8μm, effectively preventing slippage and damage to the incense thread. Furthermore, to improve the reliability of the installation between the wheel seat 42 and the base 10, the tension adjustment mechanism 40 also includes a fixing seat 46. The fixing seat 46 can be fixed to the base 10 with bolts, and the side of the fixing seat 46 has a mounting surface. The wheel seat 42 is installed on the mounting surface to ensure installation accuracy.

[0042] Furthermore, the tension adjustment mechanism 40 also includes a drive component 44, which is mounted on the wheel seat 42, and its output end is connected to the rotating arm 43 to drive the rotating arm 43 and the tension wheel 41 to rotate. This simplifies the driving of the rotating arm 43. The drive component 44 can be configured as a motor and connected to the rotating arm 43 via a coupling, effectively compensating for installation errors and transmitting smooth torque. Simultaneously, the drive component 44 is equipped with an encoder to achieve closed-loop speed control.

[0043] For example, a high-precision tension and compression sensor can be installed near the tension wheel 41 to detect the tension of the incense thread. The sensor converts the collected tension signal into a current signal and transmits it to the control system. Then, the control system adjusts the rotation speed of the drive component 44 by a preset tension value to achieve automatic closed-loop control of the incense thread tension.

[0044] In one embodiment, such as Figure 2 and Figure 3 As shown, the tension adjustment mechanism 40 also includes an adjustment component 45, the two ends of which are movably connected to the rotating arm 43 and the wheel seat 42, respectively, for adjusting the pressure of the tension wheel 41 on the incense thread.

[0045] Specifically, an auxiliary shaft 421 is connected to the side of the wheel seat 42, and a sliding groove is provided on the rotating arm 43. The adjusting assembly 45 includes an inner support rod 451, an outer sleeve 452, and an elastic element 453. One end of the inner support rod 451 is inserted into the outer sleeve 452, and the other end forms a cam opening 4511. The cam opening 4511 is sleeved on the outer periphery of the auxiliary shaft 421 and is movably engaged with the auxiliary shaft 421. A sliding rod 4521 is connected to the end of the outer sleeve 452 away from the inner support rod 451. The sliding rod 4521 is inserted into the sliding groove and can slide along the sliding groove. The elastic element 453 is installed in the outer sleeve 452 and is connected to both the inner support rod 451 and the outer sleeve 452. Understandably, through the sliding of the slide rod 4521 in the slide groove and the movement of the auxiliary shaft 421 in the cam opening 4511, the rotating arm 43 can smoothly drive the adjustment component 45 to move during rotation. At the same time, the inner support rod 451 and the outer sleeve 452 are connected by the elastic element 453, which can be used to make the movement trajectory of the tensioning wheel 41 have a certain amplitude, thereby realizing the dynamic adjustment of the tensioning wheel 41 on the tension of the incense thread.

[0046] For example, the rotating arm 43 can rotate within a preset angle range under the drive of the drive component 44. When the adjustment component 45 is not set, the trajectory of the rotating arm 43 relative to the rotation center is fixed, resulting in a fixed trajectory of the tensioning wheel 41, which will not change. At this time, if the speed of the incense thread moving before and after the tensioning wheel 41 is slightly inconsistent, and the tensioning wheel 41 is still moving with the rotating arm 43, the incense thread at the tensioning wheel 41 will be stuck very tightly or there will be a flying thread phenomenon. However, after setting the adjustment component 45, if the incense thread gets stuck during the movement, the incense thread at the tensioning wheel 41 will be very taut. The rotating arm 43 will stop momentarily under force. At the same time, the elastic component 453 will contract and pull the rotating arm 43 to generate a certain rotation, preventing the rotating arm 43 from continuing to rotate in the preset direction, which would cause the incense thread to become further taut and thus break.

[0047] Here, the auxiliary shaft 421 can be integrally formed with the wheel seat 42, or a mounting hole can be opened on the wheel seat 42. The auxiliary shaft 421 is connected by interference fitting into the mounting hole, ensuring reliable installation of the auxiliary shaft 421. The surface roughness Ra of the auxiliary shaft 421 is ≤0.8μm to ensure smooth fit between the cam port 4511 and the auxiliary shaft 421. Furthermore, the cam port 4511 and the auxiliary shaft 421 can be configured as a clearance fit, with the clearance set to 0.05mm~1mm, allowing the inner support rod 451 to rotate freely 360° around the auxiliary shaft through the cam port 4511. The contour curve of the cam port 4511 can be designed according to the requirements of incense thread tension adjustment, without further limitations here.

[0048] In one embodiment, the inner support rod 451 includes a rod portion and a cylindrical portion connected to each other, a cam opening 4511 is formed in the cylindrical portion, and the rod portion is inserted into the outer sleeve 452. Here, the rod portion and the cylindrical portion can be connected by threads, and the cylindrical portion is preferably made of polyoxymethylene plastic injection molding, while the rod portion is made of stainless steel to reduce friction on the inner wall of the cam opening 4511.

[0049] Furthermore, the outer sleeve 452 can be made of aluminum alloy, and the inner surface of the outer sleeve 452 is ground to achieve a roughness Ra≤0.4μm, ensuring smoother sliding of the inner support rod 451 relative to the outer sleeve 452. And, as... Figure 4 As shown, the elastic element 453 can be a stainless steel spiral compression spring, and both ends of the elastic element 453 are ground flat to ensure that both ends of the elastic element 453 are in close contact with the inner support rod 451 and the outer sleeve 452, so as to better utilize the elastic force of the elastic element 453 to achieve dynamic adjustment of the tension of the incense thread.

[0050] In one embodiment, the slide groove is configured as a T-groove, and the shape of the part connecting the slide rod 4521 to the slide groove is the same as the shape of the slide groove. In this way, the cooperation between the slide rod 4521 and the slide groove is stable, and the slide rod 4521 will not disengage from the slide groove when it moves in the slide groove, ensuring that the outer sleeve 452 can move with the rotation of the rotating arm 43, while ensuring that the inner support rod 451 can smoothly retract and move along the axial direction.

[0051] Specifically, the bottom of the outer sleeve 452 is provided with a carrier block 4522, which can be fixed to the bottom of the outer sleeve 452 by bolts. The slide rod 4521 is connected to the carrier block 4522 to facilitate the processing of the slide rod 4521 and the like, and reduce the difficulty of processing and connection.

[0052] In one embodiment, such as Figure 1 As shown, the filter rod incense thread fragrance application device 100 also includes a tensioning mechanism 50. The tensioning mechanism 50, in conjunction with the fragrance application wheel 33 and the tensioning wheel 41, further enhances the fragrance application effect on the incense thread. The tensioning mechanism 50 includes a guide plate 51 and a tightening roller 52. The guide plate 51 is connected to the base 10, and the tightening roller 52 is rotatably connected to the guide plate 51. Multiple tightening rollers 52 are arranged at intervals in a preset shape to contact and tighten the incense thread. It is easy to understand that the tensioning mechanism 50 is positioned closer to the raw material roll of the incense thread. That is, after the incense thread enters the filter rod incense thread fragrance application device 100, it first passes through multiple tightening rollers 52 for initial tightening, thereby stabilizing the direction of the incense thread. Therefore, the tightening roller 52, in conjunction with the fragrance application wheel 33, can achieve more uniform and precise fragrance application. The amount and effect of fragrance application can be flexibly adjusted according to different production needs, improving the uniformity of filter rod fragrance application and the consistency of product quality.

[0053] Specifically, in this embodiment, there are three tightening rollers 52, and the three tightening rollers 52 are arranged in a triangle, which can more effectively stabilize the direction of the incense thread and achieve a preliminary tightening effect. The axes of the tightening rollers 52, the incense adding wheel 33, and the tensioning wheel 41 are arranged in parallel to improve the reliability of the incense thread movement.

[0054] Furthermore, in one embodiment, there are two guide plates 51, which are arranged opposite to each other. The guide plates 51 are movably connected to the base 10 along the axial direction of the tightening roller 52, and the tightening roller 52 is telescopically mounted between the two guide plates 51. This allows for better adaptation to incense threads of different specifications. The guide plates 51 can be connected to the T-slots on the base 10 via T-bolts, and precise positioning is achieved through scale markings and locking nuts. Furthermore, the surface of the guide plate 51 near the tightening roller 52 can be polished to reduce roughness, which helps reduce frictional resistance generated during incense thread transport, resulting in smoother incense thread movement.

[0055] In one embodiment, the tightening roller 52 is movably connected to the guide plate 51 to adjust the spacing between adjacent tightening rollers 52. Similarly, by adjusting the spacing between the tightening rollers 52, it is possible to better accommodate incense threads of different specifications. Here, one end of the tightening roller 52 relative to the guide plate 51 can be adjusted by a bracket. The surface of the tightening roller 52 can be hard chrome plated to improve reliability, and bearings can be provided at both ends of the tightening roller 52 to ensure coaxiality.

[0056] In summary, through high-precision machining and assembly processes, the coaxiality error of the central axis between the incense roller 33, the tension roller 41, and the three tensioning rollers 52 is small, which can ensure that the incense thread is subjected to uniform force and runs stably during the conveying process.

[0057] In one embodiment, the filter rod incense thread fragrance adding device 100 also includes a photoelectric encoder, which is set at the incense thread inlet and used to detect the conveying speed of the incense thread. The control system can automatically adjust the rotation speed of the drive component 44 according to the incense thread speed, the rotation speed of the fragrance adding wheel 33 and the fragrance adding amount set value, so as to ensure that the incense thread speed is synchronized with the fragrance adding process. In this way, when the incense thread speed changes, the control system can quickly complete the adaptive adjustment of the fragrance adding parameters to ensure the uniformity of fragrance adding.

[0058] Furthermore, the control system can be equipped with a fault diagnosis module to monitor the operating status of each component. When faults such as broken fragrance thread, low fragrance level, motor overload, or abnormal temperature occur, the touchscreen displays the fault code and location information, and an alarm is triggered by an audible and visual alarm. At the same time, the system automatically saves the operating data within a preset time period before the fault occurred (usually set to 10 minutes) to facilitate fault analysis and troubleshooting.

[0059] In operation, the fragrance rod incense thread adding device 100 provided in this application guides the incense thread from the external raw material roll into an initial guiding channel composed of two guide plates 51. Within this channel, the incense thread sequentially passes around three tightening rollers 52 arranged in a triangular pattern, stabilizing the thread's direction and initially tightening it to prepare for subsequent fragrance addition and tensioning. The guide plates 51 and tightening rollers 52 can be adjusted in position according to different specifications of incense thread. After being guided by the tightening rollers 52, the incense thread contacts the fragrance adding wheel 33. Since the fragrance adding wheel 33 is connected to the lifting plate 31 via a rotating shaft 32, the contact force and angle between the incense thread and the fragrance adding wheel 33 can be adjusted by raising and lowering the lifting plate 31. Furthermore, when the incense thread contacts the fragrance adding wheel 33, the fragrance carried by the fragrance adding wheel 33 from the fragrance adding box 20 below can be transferred to the incense thread, completing the fragrance adding operation. Subsequently, the incense thread winds around the outer circumference of the tensioning wheel 41, and the tension of the incense thread is detected by a sensor. When the tension of the incense thread changes, the inner support rod 451 rotates relative to the auxiliary shaft 421 through the cam opening 4511, changing the extension and retraction of the inner support rod 451. This, in turn, automatically adjusts the pressure of the tensioning wheel 41 on the incense thread through the elastic action of the elastic element 453, ensuring reliable movement of the incense thread and achieving precise control of the incense thread tension. This effectively prevents the incense thread from becoming loose or breaking, ensuring the continuity and stability of the incense adding process. At the same time, the incense adding wheel 33, in conjunction with the tightening roller 52 and the tensioning wheel 41, can further stabilize the direction of the incense thread, achieving more uniform and precise incense adding. The amount and effect of incense adding can be flexibly adjusted according to different production needs, improving the uniformity of incense adding to the filter rod and the consistency of product quality.

[0060] Furthermore, compared with the traditional fragrance adding mechanism 30, the filter rod fragrance line fragrance adding device 100 provided in this application has a compact layout of parts, which is easy to disassemble and assemble, reduces the difficulty of equipment maintenance, and can reduce the equipment failure rate, effectively reduce production and maintenance costs, and improve production efficiency.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A fragrance-adding device for a filter rod and fragrance thread, characterized in that, It includes a base (10), a fragrance box (20), a fragrance adding mechanism (30), and a tension adjusting mechanism (40). The fragrance box (20), the fragrance adding mechanism (30), and the tension adjusting mechanism (40) are all installed on the base (10). The fragrance box (20) is used to hold fragrance that can be attached to the fragrance thread. The fragrance adding mechanism (30) includes a lifting plate (31), a rotating shaft (32), and a fragrance adding wheel (33). The lifting plate (31) is connected to the base (10), the rotating shaft (32) is connected to the lifting plate (31) and is located above the fragrance adding box (20). The fragrance adding wheel (33) is sleeved on the outer periphery of the rotating shaft (32) and is used to contact and guide the movement of the fragrance thread. The tension adjustment mechanism (40) is connected to a tension wheel (41), and the tension adjustment mechanism (40) can drive the tension wheel (41) to rotate so that the tension wheel (41) can cooperate with the fragrance wheel (33) to adjust the tension of the fragrance thread; The fragrance wheel (33) can rotate around the axis of the rotating shaft (32) and can move towards or away from the fragrance box (20) along the height direction of the fragrance box (20).

2. The fragrance-adding device for filter rods and fragrance threads according to claim 1, characterized in that, The fragrance filter rod fragrance device (100) also includes a track section and a slider section. One of the track section and the slider section is connected to the lifting plate (31), and the other is connected to the base (10). The track section and the slider section are connected in cooperation to drive the lifting plate (31) to move along the height direction of the fragrance box (20).

3. The fragrance-adding device for filter rods and fragrance threads according to claim 2, characterized in that, The rotating shaft (32) is rotatably connected to the lifting plate (31), and an anti-rotation structure is provided between the rotating shaft (32) and the fragrance wheel (33). The anti-rotation structure is used to prevent the fragrance wheel (33) from rotating relative to the rotating shaft (32). The anti-rotation structure is configured as a flat key or an anti-rotation plane.

4. The fragrance-adding device for filter rods and fragrance threads according to claim 1, characterized in that, The surface of the fragrance wheel (33) is provided with grooves or textures to increase the friction of the fragrance wheel (33).

5. The fragrance-adding device for filter rods and fragrance threads according to claim 1, characterized in that, The tension adjustment mechanism (40) includes a wheel seat (42) and a rotating arm (43). The wheel seat (42) is mounted on the base (10). One end of the rotating arm (43) is rotatably connected to the wheel seat (42), and the other end is connected to the tension wheel (41).

6. The fragrance-adding device for filter rods and fragrance threads according to claim 5, characterized in that, The tension adjustment mechanism (40) further includes a drive member (44), which is mounted on the wheel seat (42) and the output end of the drive member (44) is connected to the rotating arm (43) to drive the rotating arm (43) and the tension wheel (41) to rotate.

7. The fragrance-adding device for filter rods and fragrance threads according to claim 5, characterized in that, An auxiliary shaft (421) is connected to the side of the wheel seat (42), and a sliding groove is provided on the rotating arm (43); The tension adjustment mechanism (40) further includes an adjustment component (45), which includes an inner support rod (451), an outer sleeve (452), and an elastic element (453). One end of the inner support rod (451) is inserted into the outer sleeve (452), and the other end forms a cam opening (4511). The cam opening (4511) is sleeved on the outer periphery of the auxiliary shaft (421) and is movably engaged with the auxiliary shaft (421). The elastic element (453) is installed inside the outer sleeve (452) and is connected to the inner support rod (451) and the outer sleeve (452) respectively. A sliding rod (4521) is connected to one end of the outer sleeve (452) away from the inner support rod (451). The sliding rod (4521) is inserted into the sliding groove and can slide along the sliding groove.

8. The fragrance-adding device for filter rods and fragrance threads according to claim 7, characterized in that, The slide is configured as a T-shaped groove, and the shape of the part connecting the slide rod (4521) to the slide is the same as the shape of the slide.

9. The fragrance-adding device for filter rods and fragrance threads according to claim 1, characterized in that, The fragrance filter rod fragrance device (100) also includes a tensioning mechanism (50), which includes a guide plate (51) and a tightening roller (52). The guide plate (51) is connected to the base (10), and the tightening roller (52) is rotatably connected to the guide plate (51). There are multiple tightening rollers (52), which are arranged at intervals in a preset shape to contact and tighten the fragrance line. The axes of the tightening roller (52), the fragrance roller (33), and the tensioning roller (41) are arranged in parallel.

10. The fragrance-adding device for filter rods and fragrance threads according to claim 9, characterized in that, The number of guide plates (51) is two, the two guide plates (51) are arranged opposite to each other, and the guide plates (51) are movably connected to the base (10) along the axial direction of the tightening roller (52), and the tightening roller (52) is telescopically installed between the two guide plates (51). And / or, the tightening roller (52) is movably connected to the guide plate (51) to adjust the spacing between adjacent tightening rollers (52).

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