Novel dispensing system

Abstract

The utility model provides a novel dispensing system, which is arranged at a dispensing station and comprises a rotary component consisting of a dispensing drum wheel, a synchronously rotating gas distribution disc and a plurality of groups of dispensing head components, and a sealing disc independent from the rotary component, each group of dispensing head assembly is positioned right above each dispensing smoke groove, and is sequentially divided into a positive pressure section, a dispensing section, a negative pressure section and a cleaning section along the rotation direction of the dispensing drum wheel along with a circular motion trail formed by rotation of the dispensing drum wheel; by means of the rotary motion of the dispensing drum wheel, the dispensing head assembly can supplement glue liquid in time in the positive pressure section, make contact with the end face of a cigarette tube filter tip through a glue outlet with the glue liquid in the dispensing section to complete dispensing, suck the glue liquid back in time in the negative pressure section and be cleaned in time in the cleaning section. And the sealing disc and the gas distribution disc are used for forming positive pressure or negative pressure in the dispensing head assembly at the positive pressure section and the negative pressure section. According to the utility model, circular-ring-shaped glue discharge is realized, the dispensing amount is controllable, the dispensing device is automatically closed after dispensing, the dispensing device has a self-cleaning function, and the dispensing quality is favorably guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cigarette production technology, and more specifically to a novel dispensing system. Background Technology

[0002] Heated cigarettes, due to their low harm and risk, and their smoking experience being similar to traditional cigarettes, have rapidly become the most promising new cigarette product and a hot area for future development in the tobacco industry. Among them, electrically heated cigarettes, with their advantages of controllable heating temperature, flexible heating methods, and convenient and fashionable use, represent a significant development direction for heated cigarettes both domestically and internationally. Currently, typical international brands of electrically heated cigarettes include Philip Morris IQOS, British American GLO, Korea Tobacco Lil, and Japan Tobacco Ploom, and since their launch, sales have been booming, gradually becoming a major contributor to their profits.

[0003] Based on the form of the smoke-releasing material, heated cigarettes can be divided into ordered sheet heated cigarettes, disordered sheet heated cigarettes, and granular heated cigarettes. Granular heated cigarettes are a type of heated cigarette product that uses granular tobacco material as the smoke-releasing material. For example, patents CN 109527638A, CN 109527639A, and CN 109512031A disclose the structure of granular heated cigarette sticks. Furthermore, patents CN 108903065A, CN 109292115A, and CN201910809788.3 disclose equipment for forming granular heated cigarette sticks. Additionally, patent CN201910808764.6 discloses a continuous adhesive coating device for the end face of the paper tube of granular heated cigarettes. However, existing adhesive dispensing devices have difficulty achieving circular adhesive dispensing, and the amount of adhesive dispensed is not easily controlled. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a novel dispensing system that achieves circular dispensing, making the dispensing amount controllable, automatically sealing after dispensing and having a self-cleaning function, which helps to ensure dispensing quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel dispensing system, characterized by the following structural features:

[0007] The device is located at the dispensing station and includes a rotatable component consisting of a dispensing drum, an air distribution plate that rotates synchronously with the dispensing drum, and multiple sets of dispensing head assemblies. It also includes a sealing plate independent of the rotatable component. The circular motion trajectory formed by each set of dispensing head assemblies as the dispensing drum rotates is sequentially divided into a positive pressure section, a dispensing section, a negative pressure section, and a cleaning section along the rotation direction of the dispensing drum. The dispensing section covers the end point of the positive pressure section and the beginning point of the negative pressure section, and the cleaning section covers the end point of the negative pressure section and the beginning point of the positive pressure section.

[0008] The dispensing drum can rotate around its central axis. Multiple dispensing grooves are evenly spaced along the circumference of the outer circumference. A set of dispensing head assemblies, with the same structural form, is positioned directly above each dispensing groove. The cigarette tube to be dispensed can be placed upright in the dispensing groove with the filter end facing upwards and can detach from the groove. As the drum rotates through the dispensing section, it is supported by a lifting plate below and moves upwards along the groove until the filter end face contacts the dispensing outlet of the dispensing head assembly above. Upon leaving the dispensing section, it detaches from the lifting plate, moves downwards to its original position, and separates from the dispensing outlet of the dispensing head assembly. The dimensions of the dispensing outlet are set according to a preset dispensing mark and are located directly above the dispensing area on the filter end face of the cigarette tube.

[0009] The sealing disc and the air distribution disc are coaxially distributed one above the other above the dispensing drum. Each dispensing head assembly is equipped with an air path. Corresponding to the air path of each dispensing head assembly, the air distribution disc forms branch air channels that communicate with the corresponding air path. The multiple branch air channels are independent of each other. The air path is used to connect the corresponding branch air channel with the glue flow channel in the dispensing head assembly. The glue flow channel is provided with a glue addition port, and the end forms the glue outlet that faces downward and is directly opposite the end face of the cigarette tube filter.

[0010] The sealing disc has a positive pressure airway corresponding to the positive pressure section, which is connected to an external positive pressure air source and can communicate with each branch airway in the positive pressure section. Similarly, it has a negative pressure airway corresponding to the negative pressure section, which is connected to an external negative pressure air source and can communicate with each branch airway in the negative pressure section. The adhesive in the flow channel of each set of dispensing head assemblies in the positive pressure section can overflow to the dispensing port under the action of the positive pressure airflow. In the dispensing section, the adhesive is applied to the cigarette tube by contacting the end face of the cigarette tube filter through the dispensing port. In the negative pressure section, the adhesive in each set of dispensing head assemblies can flow back from the dispensing port to the flow channel under the action of the negative pressure airflow. In the cleaning section, the dispensing port can contact the sealing plate surface, which is independent of the rotatable component and is a fixed component, and the sealing plate can cover and clean the dispensing port.

[0011] The structural features of this utility model also lie in:

[0012] The structure of the dispensing head assembly is configured as follows:

[0013] The device includes a dispensing cylinder, a dispensing head, and a dispensing sleeve coaxial with the dispensing sump, as well as the air passage. The dispensing sleeve is fitted over the lower end of the dispensing cylinder and houses the dispensing head. A circular gap exists radially between the bottom end of the dispensing head and the dispensing sleeve, serving as a pre-dispensing area. The bottom end of the pre-dispensing area communicates with the outside, forming a circular opening that serves as the dispensing outlet. The top end of the dispensing head is tightly connected to the bottom end of the dispensing cylinder. A centrally located glue flow channel forms a through-flow glue channel with the inner cavity of the dispensing cylinder. The glue in the glue channel can overflow into the pre-dispensing area through multiple overflow holes evenly distributed circumferentially at the lower end of the glue flow channel. The air passage is a flexible hose with connectors. The hose is detachably connected to the top of the dispensing cylinder and the outlet of the corresponding branch air passage through connectors at both ends.

[0014] The dispensing cartridge has a syringe-like structure with an internal cavity. The bottom tapers to form the cartridge outlet, and the top has a cap. The air passage is connected to the cap and communicates with the inside of the cartridge. The adhesive filling port is located on the cap and is used to inject adhesive into the cartridge.

[0015] The sealing disc is vertically tensioned by a pair of elastic components mounted on a support frame. The lower disc surface remains in contact with the upper disc surface of the air distribution disc due to the elastic force of the elastic components. Positive and negative pressure air channels are distributed circumferentially around the central axis of the disc body, each being an arc-shaped groove that is concave upward from the lower disc surface. Each branch air channel rotating to the positive pressure section is tightly connected and communicates with the positive pressure air channel, and each branch air channel rotating to the negative pressure section is tightly connected and communicates with the negative pressure air channel. Positive and negative pressure air holes are respectively opened on the sealing disc corresponding to the positive and negative pressure air channels. One end of the positive pressure air hole is connected to a positive pressure air source, and the other end is connected to the positive pressure air channel. One end of the negative pressure air hole is connected to a negative pressure air source, and the other end is connected to the negative pressure air channel.

[0016] The air distribution plate is fixed on the dispensing drum. Multiple branch air channels are arranged around the central axis of the plate body along the circumferential direction according to the positions of multiple sets of dispensing head assemblies. They are built into the plate body and are in the shape of L-shaped channels. The vertical section extends upward to the upper plate surface exposed on the air distribution plate, and the horizontal section extends radially outward to the outer circumference exposed on the outer wheel of the air distribution plate, connecting with the air passage.

[0017] As the dispensing drum rotates, the smoke tubes in each dispensing smoke tank pass through the positive pressure section, dispensing section, negative pressure section, and cleaning section in sequence. When passing through the positive pressure section, negative pressure section, and cleaning section, the bottom is supported by the fixed support plate on the dispensing drum. The filter tip end face and the dispensing outlet of the dispensing head assembly directly above are left with a vertical gap. When passing through the dispensing section, the bottom is supported by the lifting support plate on the dispensing drum.

[0018] The lifting support plate has a three-section bending structure, consisting of a lower section, an inclined section, and a higher section in the direction of rotation of the dispensing drum. The lower section and the inclined section are located at the junction of the positive pressure section and the dispensing section, which is used for the smooth connection between the lifting support plate and the fixed support plate. The lower section and the fixed support plate are at the same height and connected. The lower end of the inclined section connects with the lower section, and the higher end connects with the higher section. The bottom of the flue tube passing through the dispensing section is supported by the higher section of the lifting support plate, and the end face of the filter tip is in contact with the dispensing outlet of the dispensing head assembly directly above.

[0019] The sealing plate is provided with a sponge layer, which contacts the dispensing port of the dispensing head assembly.

[0020] The dispensing station is located between the filling station and the sealing station. The dispensing drum is connected between the filling drum of the filling station and the sealing drum of the sealing station. After passing through the dispensing section, the smoke tubes in each dispensing smoke trough on the dispensing drum are sequentially transferred to the sealing drum.

[0021] The inner diameter of the dispensing head assembly's outlet is set according to the diameter of the cigarette filter end face.

[0022] Compared with existing technologies, the beneficial effects of this utility model are reflected in:

[0023] 1. This utility model achieves ring-shaped glue dispensing;

[0024] A novel dispensing head assembly is provided. A set of dispensing head assemblies that rotate synchronously with the dispensing drum are arranged directly above the flue in each dispensing flue. A pre-dispensing area is designed in the dispensing head assembly. The pre-dispensing area is a ring-shaped gap area with a ring-shaped opening at the bottom, which serves as the dispensing port. The automatic addition or back suction of the glue at the dispensing port is achieved by using positive and negative pressure. The contact between the end face of the flue filter and the dispensing port during the dispensing section is used to achieve the ring-shaped dispensing of glue from the dispensing port to the flue.

[0025] 2. This utility model achieves stable and controllable dispensing volume, which is conducive to ensuring consistent product quality;

[0026] Based on the rotational motion of the dispensing drum, this invention is equipped with a sealing disc with positive and negative pressure air channels, a distribution disc with branch air channels, and a dispensing head assembly whose inner cavity and branch air channels are connected by an air passage. It also includes a fixed support plate and a lifting support plate for the flue. Along the rotational path of a single dispensing flue, it is sequentially divided into a positive pressure section, a dispensing section, a negative pressure section, and a cleaning section. In the positive pressure section, the positive pressure air channel of the sealing disc, the branch air channels and air passages of the distribution disc, and the inner cavity of the dispensing head assembly are connected. The positive pressure allows the adhesive in the dispensing head assembly to flow from the dispensing cylinder → flow channel → overflow hole → pre-dispensing area to the outlet. The glue overflows from the nozzle and hangs at the glue outlet, waiting for glue to be dispensed. After passing through the positive pressure section, the positive pressure is released. During the glue dispensing section, the flue is lifted by raising the support plate, and the filter end face contacts the glue outlet to achieve glue dispensing. After glue dispensing, the flue returns to the fixed support plate and detaches from the glue outlet. Under the negative pressure adsorption of the negative pressure section and the sealing plate of the cleaning section, the glue at the outlet will not overflow, effectively ensuring product quality. Utilizing the rotational motion of the glue dispensing drum, with the coordinated cooperation of the sealing plate, the air distribution plate, and the glue dispensing head assembly, the amount of glue dispensed into the downward flue by each set of glue dispensing head assemblies is not only controllable but also stable.

[0027] 3. This utility model has a self-cleaning function, which helps to ensure the quality of dispensing;

[0028] After dispensing, when entering the negative pressure section, the negative pressure air passage of the sealing disc, the branch air passage of the air distribution disc, and the inner cavity of the dispensing head assembly are connected. The negative pressure allows the adhesive in the dispensing head assembly to flow back into the dispensing cylinder from the dispensing port → pre-dispensing area → overflow hole → dispensing channel, preventing the adhesive from overflowing from the dispensing port after dispensing and affecting product quality. Furthermore, when entering the cleaning section, the negative pressure is released, but at this time the dispensing port is blocked by the sealing plate. The sealing plate scrapes off the adhesive at the dispensing port as it moves, so that the dispensing port is effectively and automatically cleaned before entering the positive pressure section again, effectively preventing residual adhesive from affecting the stable control of the dispensing amount in the next dispensing. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 This is a cross-sectional view of the present invention when the smoke pipe is in the dispensing section;

[0031] Figure 3 This is a cross-sectional view of the present invention when the flue is in the non-adhesive section;

[0032] Figure 4 This is a structural diagram of the dispensing head assembly;

[0033] Figure 5 This is a schematic diagram of the internal structure of the dispensing head assembly;

[0034] Figure 6 This is a schematic diagram showing the positional relationship between each branch airway in the positive pressure section, dispensing section, negative pressure section, and cleaning section and the positive and negative pressure airways.

[0035] Figure 7 This is a cross-sectional structural diagram of the sealing disc and the air distribution disc;

[0036] Figure 8 This is a three-dimensional structural diagram of the sealing disc and the air distribution disc;

[0037] Figure 9 This is a bottom-view three-dimensional structural diagram of the sealing disc;

[0038] Figure 10 This is a top view of the sealing disc.

[0039] Figure 11 This is a schematic diagram of the gas distribution plate;

[0040] Figure 12 This is a three-dimensional structural diagram of the raised support plate;

[0041] Figure 13 This is a side view of the raised support plate structure.

[0042] Figure 14 This is a structural diagram of the sealing plate;

[0043] Figure 15 This is a side view of the sealing plate.

[0044] Figure 16 This is a structural diagram of the dispensing head mounting plate.

[0045] In the picture:

[0046] 1. Glue drum roller; 11. Glue fume tray; 12. Lifting support plate; 121. Lower plate section; 122. Inclined plate section; 123. Higher plate section; 13. Fixed support plate;

[0047] 2. Glue head assembly; 21. Glue cartridge; 22. Glue head; 23. Glue sleeve; 24. Glue flow channel; 25. Overflow hole; 26. Pre-dispensing area; 27. Glue outlet; 28. Air passage; 29. ​​Connector; 210. Glue head mounting plate; 211. Mounting hole;

[0048] 3-part airway; 31 airways;

[0049] 4. Sealing plate; 41. Positive pressure air passage; 42. Negative pressure air passage; 43. Positive pressure air port; 44. Negative pressure air port;

[0050] 5 uprights; 51 flexible components;

[0051] 6. Sealing board; 61. Sponge layer;

[0052] 71 Positive pressure section; 72 Dispensing section; 73 Negative pressure section; 74 Cleaning section;

[0053] 8. Smoke pipes. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0055] Please refer to Figures 1 to 3 The novel dispensing system of this embodiment is set at the dispensing station and includes a rotatable component consisting of a dispensing drum 1, an air distribution plate 3 that rotates synchronously with the dispensing drum 1, and multiple sets of dispensing head assemblies 2. It also includes a sealing plate 4 independent of the rotatable component. The circular motion trajectory formed by each set of dispensing head assemblies 2 as the dispensing drum 1 rotates is divided into a positive pressure section 71, a dispensing section 72, a negative pressure section 73, and a cleaning section 74 in the direction of rotation of the dispensing drum 1. The dispensing section 72 covers the end point of the positive pressure section 71 and the beginning point of the negative pressure section 73, and the cleaning section 74 covers the end point of the negative pressure section 73 and the beginning point of the positive pressure section 71.

[0056] The dispensing drum 1 can rotate around its central axis. Multiple dispensing flue grooves 11 are formed on the outer circumference of the drum, which are evenly spaced along the circumference. A set of dispensing head assemblies 2 are arranged in the same structural form directly above each dispensing flue groove 11. The flue tube 8 to be dispensed can be placed vertically in the dispensing flue groove 11 with the filter end facing upwards and can be separated from the dispensing flue groove 11. When the dispensing drum 1 rotates and passes through the dispensing section 72, it is supported by the lifting plate 12 below and can move upwards along the dispensing flue groove 11 until the filter end face is in contact with the dispensing outlet 27 of the dispensing head assembly 2 directly above. When it leaves the dispensing section 72, it separates from the lifting plate 12, moves downwards and resets, and separates from the dispensing outlet 27 of the dispensing head assembly 2. The outer dimensions of the dispensing outlet 27 are set according to the preset dispensing mark and are located directly above the part of the flue tube 8 to be dispensed.

[0057] The sealing disc 4 and the air distribution disc 3 are coaxially distributed above the dispensing drum 1, one above the other. Each dispensing head assembly 2 is equipped with an air passage 28. Corresponding to the air passage 28 of each dispensing head assembly 2, the air distribution disc 3 is formed with branch air passages 31 that communicate with the corresponding air passage 28. The multiple branch air passages 31 are independent of each other. The air passage 28 is used to connect the corresponding branch air passage 31 with the glue flow channel in the dispensing head assembly 2. The glue flow channel is provided with a glue addition port, and the end forms a glue outlet 27 that is exposed downward and directly faces the filter end face of the cigarette tube 8 below.

[0058] A positive pressure airway 41, connected to an external positive pressure air source, is formed on the sealing disc 4 corresponding to the positive pressure section 71. The positive pressure airway 41 can communicate with each branch airway 31 in the positive pressure section 71. A negative pressure airway 42, connected to an external negative pressure air source, is formed on the negative pressure section 73. The negative pressure airway 42 can communicate with each branch airway 31 in the negative pressure section 73. Under the action of the positive pressure airflow, the adhesive in the flow channel of each set of dispensing head assemblies 2 in the positive pressure section 71 can overflow to the dispensing outlet. When the dispensing port 27 is in the dispensing section 72, it contacts the filter end face of the cigarette tube 8 to dispense adhesive into the cigarette tube 8. When the dispensing port 27 is in the negative pressure section 73, the adhesive in each group of dispensing head assemblies 2 can flow back from the dispensing port 27 into the adhesive flow channel under the action of negative pressure airflow. When the dispensing port 27 is in the cleaning section 74, it can contact the surface of the sealing plate 6, which is independent of the rotatable component and is a fixed component, and the sealing plate 6 can seal and clean the dispensing port 27.

[0059] The corresponding structural design of this new dispensing system also includes:

[0060] like Figure 16 As shown, a dispensing head mounting plate 210 is coaxially fixed on the dispensing drum 1, and each dispensing head assembly 2 is installed in a pre-drilled mounting hole 211 on the dispensing head mounting plate 210. Figures 4 to 5 As shown, the dispensing head assembly 2 includes a dispensing cylinder 21, a dispensing head 22, and a dispensing sleeve 23, all coaxial with the dispensing fume trough 11, and also includes an air passage 28. The dispensing sleeve 23 is fitted over the lower end of the dispensing cylinder 21 and houses the dispensing head 22. A circular gap is left radially between the bottom end of the dispensing head 22 and the dispensing sleeve 23, serving as a pre-dispensing area 26. The bottom end of the pre-dispensing area 26 communicates with the outside, forming a circular opening as a dispensing outlet 27. The dispensing head 2... The top of 2 is tightly connected to the bottom of the dispensing tube 21. The dispensing channel 24 formed in the center of the interior forms a through adhesive channel with the inner cavity of the dispensing tube 21. The adhesive in the adhesive channel can overflow to the pre-dispensing area 26 through multiple overflow holes 25 evenly distributed around the lower end of the dispensing channel 24. The air passage 28 is a hose with a connector 29. The hose is detachably connected to the top of the dispensing tube 21 and the outlet of the corresponding branch air passage 31 through the connector 29 at the two ends.

[0061] The dispensing cartridge 21 has a syringe-like structure with an internal cavity. The bottom gradually narrows to form the cartridge outlet, and the top has a cartridge cap. The air passage 28 is connected to the cartridge cap and communicates with the inside of the cartridge. The glue addition port is located on the cartridge cap and is used to inject glue into the cartridge.

[0062] The number of dispensing head assemblies 2 and dispensing fume troughs 11 is the same, which is 32 sets in this embodiment.

[0063] like Figures 6 to 11 As shown, the sealing disc 4 is vertically tensioned by a pair of elastic components 51 mounted on the upright frame 5. The lower disc surface is always in contact with the upper disc surface of the air distribution disc 3 due to the elastic force of the elastic components 51. The positive pressure air passage 41 and the negative pressure air passage 42 are distributed circumferentially around the central axis of the disc body. They are respectively an arc-shaped groove that is concave upward from the lower disc surface. Each branch air passage 31 that rotates to the positive pressure section 71 is tightly connected and communicates with the positive pressure air passage 41. Each branch air passage 31 that rotates to the negative pressure section 73 is tightly connected and communicates with the negative pressure air passage 42. The sealing disc 4 has a positive pressure air hole 43 and a negative pressure air hole 44 respectively corresponding to the positive pressure air passage 41 and the negative pressure air passage 42. One end of the positive pressure air hole 43 is connected to the positive pressure air source and the other end is connected to the positive pressure air passage 41. One end of the negative pressure air hole 44 is connected to the negative pressure air source and the other end is connected to the negative pressure air passage 42.

[0064] Positive pressure air passage 41 and negative pressure air passage 42 are symmetrically distributed on the sealing disc 4, each occupying 120° along the circumference. The amount of adhesive dispensed is related to the air pressure and the rotation speed of the dispensing drum 1. The positive and negative air pressures are adjusted as needed.

[0065] The elastic component 51 is a spring that is vertically tensioned between the upright 5 and the sealing disc 4.

[0066] The air distribution plate 3 is fixed on the dispensing drum 1. Multiple air channels 31 are arranged around the central axis of the plate body along the circumferential direction according to the positions of multiple dispensing head assemblies 2. They are built into the plate body and are in the shape of L-shaped channels. The vertical section extends upward to the upper plate surface exposed on the air distribution plate 3, and the horizontal section extends radially outward to the outer circumference exposed on the outer wheel of the air distribution plate 3, and connects with the air passage 28.

[0067] As the dispensing drum 1 rotates, the smoke tube 8 in each dispensing smoke tank 11 passes through the positive pressure section 71, dispensing section 72, negative pressure section 73, and cleaning section 74 in sequence. When passing through the positive pressure section 71, negative pressure section 73, and cleaning section 74, the bottom is supported by the fixed support plate 13 on the dispensing drum 1. The filter tip end face and the dispensing outlet 27 of the dispensing head assembly 2 directly above are left with a vertical gap. When passing through the dispensing section 72, the bottom is supported by the lifting support plate 12 on the dispensing drum 1.

[0068] like Figures 12 to 13As shown, the lifting support plate 12 has a three-section bending structure, consisting of a lower section 121, an inclined section 122, and a higher section 123 in the direction of rotation of the dispensing drum 1. The lower section 121 and the inclined section 122 are located at the junction of the positive pressure section 71 and the dispensing section 72, used for the smooth connection between the lifting support plate 12 and the fixed support plate 13. The lower section 121 and the fixed support plate 13 are at the same height and connected. The inclined section 122 has an inclination angle of 3°, with its lower end connected to the lower section 121 and its higher end connected to the higher section 123. The bottom of the flue tube 8 passing through the dispensing section 72 is supported by the higher section 123 of the lifting support plate 12, and the filter tip end face remains in contact with the dispensing outlet 27 of the dispensing head assembly 2 directly above. The area occupied by the lifting support plate 12 in the circumferential direction is less than 180°.

[0069] like Figures 14 to 15 As shown, the sealing plate 6 has a segment made of a sponge layer 61, which contacts the dispensing port 27 of the dispensing head assembly 2 and is fixed to the aforementioned frame 5. Through the contact between the sealing plate 6 and the dispensing port 27 via the sponge layer 61, the relative displacement between the sealing plate 6 and the dispensing port 27 scrapes away excess adhesive and simultaneously seals the dispensing port 27, preventing adhesive overflow. This ensures that the dispensing port 27 is clean when it enters the positive pressure section 71 next time, guaranteeing a stable dispensing volume each time.

[0070] The dispensing station connects the filling station and the sealing station. The dispensing drum 1 connects the filling drum of the filling station and the sealing drum of the sealing station. The smoke tubes 8 in each dispensing smoke trough 11 on the dispensing drum 1 are sequentially transferred to the sealing drum after passing through the dispensing section 72. Therefore, when passing through the negative pressure section 73 and the cleaning section 74, there are no smoke tubes 8 in each dispensing smoke trough 11 on the dispensing drum 1.

[0071] The following is a further explanation of the existing technology for the transfer of the smoke tube 8 between workstations: Adjacent drums are meshed by gears at their bottoms, rotating independently. At the tangent point between their outer circumferences, the adhesive-filled smoke troughs 11 on the two drums are radially aligned. The upstream adhesive-filled smoke trough 11 holds the smoke tube 8 under negative pressure, while the downstream adhesive-filled smoke trough 11 does not. The two adhesive-filled smoke troughs 11 are appropriately matched to enclose the smoke tube 8. At this time, the negative pressure corresponding to the upstream adhesive-filled smoke trough 11 is disconnected, stopping the adsorption of the smoke tube 8, while the negative pressure corresponding to the downstream adhesive-filled smoke trough 11 is connected, forming the adsorption of the smoke tube 8. As the two drums continue to rotate, the transfer of the smoke tube 8 from the upstream drum to the downstream drum is completed. Adsorption air holes are opened on the walls of the adhesive-filled smoke troughs 11 of each drum. These air holes are connected to a negative pressure air source, achieving adsorption and fixation of the smoke tube 8 within the adhesive-filled smoke trough 11 by relying on negative pressure.

[0072] The inner diameter of the dispensing port 27 of the dispensing head assembly 2 is set according to the diameter of the filter end face of the cigarette tube 8, and in this embodiment it is designed to be 7.2mm.

[0073] The following is a detailed description of the working process of this embodiment:

[0074] As the dispensing drum 1 rotates, the dispensing smoke tray 11, carrying the smoke tube 8 within it, will sequentially pass through the positive pressure section 71, the dispensing section 72, the negative pressure section 73, and the cleaning section 74, as... Figure 6 As shown. Figure 6 The area occupied by the above four sections along the circumference is shown by double-dotted lines. At the same time, dashed lines show the branch air passages 31, positive pressure air passages 41, negative pressure air passages 42 and their positional relationship. When in the positive pressure section 71, negative pressure section 73, and clean section 74, the flue 8 is supported by the fixed support plate 13. At this time, there is a vertical gap between the end face of the filter and the glue outlet 27 of the glue dispensing head assembly 2 directly above.

[0075] When the dispensing drum 1's dispensing smoke trough 11, the corresponding dispensing head assembly 2, and the branch air passage 31 of the air distribution plate 3 rotate with the dispensing drum 1 to the range of the positive pressure section 71, the branch air passage 31 connects with the positive pressure air passage 41 on the sealing plate 4. Under the action of the positive pressure airflow, the glue in the dispensing cylinder 21 flows into the glue flow channel 24 in the dispensing head 22. As the positive pressure airflow continues to act, it overflows into the pre-dispensing area 26 through each overflow hole 25, so that the pre-dispensing area 26 is filled with glue and hangs at the glue outlet 27, preparing for dispensing.

[0076] When the dispensing drum 1's dispensing flue 11, the corresponding dispensing head assembly 2, and the branch air passage 31 of the air distribution plate 3 rotate with the dispensing drum 1 to the range of the dispensing section 72, the branch air passage 31 gradually leaves the positive pressure air passage 41 and loses the effect of positive pressure airflow. The amount of glue at the glue outlet 27 is stable, while the bottom of the flue tube 8 contacts the lifting plate 12 and is lifted up along the dispensing flue 11 by the lifting plate 12. The filter end face contacts the glue outlet 27 directly above, and the glue at the glue outlet 27 is imprinted onto the filter end face, completing the quantitative dispensing of the filter end face of the flue tube 8. After dispensing, it is transferred to the drum at the downstream station.

[0077] When the dispensing drum 1's dispensing smoke trough 11, the corresponding dispensing head assembly 2, and the branch air passage 31 of the air distribution plate 3 rotate with the dispensing drum 1 to the range of the negative pressure section 73, the branch air passage 31 connects with the negative pressure air passage 42 on the sealing plate 4. Under the action of the negative pressure airflow, the glue flows back into the dispensing cylinder 21 along the return path of the glue outlet 27 - pre-dispensing area 26 - overflow hole 25 - glue flow channel - dispensing cylinder 21, thus preventing the glue from flowing downwards and affecting product quality.

[0078] When the dispensing drum 1's dispensing smoke trough 11, the corresponding dispensing head assembly 2, and the branch air passage 31 of the air distribution plate 3 rotate with the dispensing drum 1 to the range of the cleaning section 74, the branch air passage 31 gradually leaves the negative pressure air passage 42 and loses the effect of negative pressure airflow. At this time, a distance is left between the smoke pipe 8 and the glue outlet 27, and the glue outlet 27 contacts the sealing plate 6. By using the movement of the glue outlet 27, the sealing plate 6 scrapes off the excess glue at the glue outlet 27, thus cleaning the glue outlet 27 and temporarily sealing the glue outlet 27, further ensuring the glue flows out.

[0079] This process is repeated to complete the automatic quantitative dispensing of adhesive onto the smoke pipe 8 on the dispensing drum 1.

[0080] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A novel dispensing system, characterized by: The dispensing station includes a rotatable component consisting of a dispensing drum (1), an air distribution plate (3) that rotates synchronously with the dispensing drum (1), and multiple sets of dispensing head assemblies (2), and also includes a sealing plate (4) independent of the rotatable component; the circular motion trajectory formed by each set of dispensing head assemblies (2) as it rotates with the dispensing drum (1) is divided into a positive pressure section (71), a dispensing section (72), a negative pressure section (73), and a cleaning section (74) in sequence along the rotation direction of the dispensing drum (1). The dispensing section (72) covers the end point of the positive pressure section (71) and the beginning point of the negative pressure section (73), and the cleaning section (74) covers the end point of the negative pressure section (73) and the beginning point of the positive pressure section (71); The dispensing drum (1) can rotate around its central axis. Multiple dispensing flue grooves (11) are formed on the outer circumference of the drum, evenly spaced along the circumference. A set of dispensing head assemblies (2) are arranged in the same structural form directly above each dispensing flue groove (11). The flue tube (8) to be dispensed can be placed vertically in the dispensing flue groove (11) with its filter end facing upwards, and can detach from the dispensing flue groove (11). As the dispensing drum (1) rotates through the dispensing section (72), it is supported by the lifting plate (12) below and can move along the dispensing flue groove (11). 1) Move upwards until the filter tip end face is in contact with the glue outlet (27) of the glue dispensing head assembly (2) directly above. When leaving the glue dispensing section (72), it separates from the lifting support plate (12), moves downwards to reset, and separates from the glue outlet (27) of the glue dispensing head assembly (2). The outer dimensions of the glue outlet (27) are set according to the preset glue dispensing mark and are located directly above the glue dispensing part on the filter tip end face of the cigarette tube (8). The glue dispensing head mounting plate (210) is coaxially fixed on the glue dispensing drum (1), and each glue dispensing head assembly (2) is installed in each reserved mounting hole (211) on the glue dispensing head mounting plate (210). The sealing disc (4) and the air distribution disc (3) are coaxially distributed above the dispensing drum (1), one above the other. Each dispensing head assembly (2) is equipped with an air path (28). Corresponding to the air path (28) of each dispensing head assembly (2), the air distribution disc (3) is formed with branch air channels (31) that communicate with the corresponding air path (28). The multiple branch air channels (31) are independent of each other. The air path (28) is used to connect the corresponding branch air channel (31) with the glue flow channel in the dispensing head assembly (2). The glue flow channel is provided with a glue addition port, and the end forms the glue outlet (27) that is exposed downward and directly opposite the filter end face of the cigarette tube (8) below. The sealing disc (4) has a positive pressure airway (41) corresponding to the positive pressure section (71) with an external positive pressure air source. The positive pressure airway (41) can communicate with each branch airway (31) in the positive pressure section (71). A negative pressure airway (42) corresponding to the negative pressure section (73) has an external negative pressure air source. The negative pressure airway (42) can communicate with each branch airway (31) in the negative pressure section (73). The adhesive in the flow channel of each set of dispensing head assemblies (2) in the positive pressure section (71) can overflow to the dispensing port (27) under the action of the positive pressure airflow. When in the dispensing section (72), the adhesive flows through the dispensing port (27). 27) Contact with the filter end face of the cigarette tube (8) to achieve dispensing of glue to the cigarette tube (8). Under the action of negative pressure airflow, the glue of each dispensing head assembly (2) in the negative pressure section (73) can flow back from the glue outlet (27) to the glue flow channel. When in the cleaning section (74), the glue outlet (27) can contact the sealing plate (6) which is independent of the rotatable component and is a fixed component. The sealing plate (6) can cover and clean the glue outlet (27). The sealing plate (6) is provided with a sponge layer (61), which contacts the glue outlet (27) of the dispensing head assembly (2) through the sponge layer (61).

2. The novel dispensing system according to claim 1, characterized in that, The structure of the dispensing head assembly (2) is configured as follows: The system includes a dispensing cylinder (21), a dispensing head (22), and a dispensing sleeve (23) coaxial with the dispensing sump (11), as well as the air passage (28). The dispensing sleeve (23) is fitted around the lower end of the dispensing cylinder (21) and houses the dispensing head (22). A circular gap is left radially between the bottom end of the dispensing head (22) and the dispensing sleeve (23), serving as a pre-dispensing area (26). The bottom end of the pre-dispensing area (26) communicates with the outside, forming a circular opening, which serves as the dispensing outlet (27). The dispensing head (22) The top end of the tube is tightly connected to the bottom end of the dispensing cylinder (21). The dispensing channel (24) formed in the center of the tube and the inner cavity of the dispensing cylinder (21) form a through dispensing channel. The adhesive in the dispensing channel can overflow to the pre-dispensing area (26) through multiple overflow holes (25) evenly distributed around the lower end of the dispensing channel (24). The air passage (28) is a hose with a connector (29). The hose is detachably connected to the top of the dispensing cylinder (21) and the outlet of the corresponding branch air passage (31) through the connector (29) at the two ends.

3. The novel dispensing system according to claim 2, characterized in that: The dispensing tube (21) has a syringe-like structure with an internal cavity. The bottom gradually narrows to form a tube outlet, and the top has a tube cap. The air passage (28) is connected to the tube cap and communicates with the inside of the tube. The adhesive addition port is opened on the tube cap and is used to inject adhesive into the tube.

4. The novel dispensing system according to claim 1, characterized in that: The sealing disc (4) is vertically tensioned by a pair of elastic components (51) mounted on the upright frame (5). The lower disc surface is kept in contact with the upper disc surface of the gas distribution disc (3) by the elastic force of the elastic components (51). The positive pressure air passage (41) and the negative pressure air passage (42) are distributed circumferentially around the central axis of the disc body. They are respectively a section of arc-shaped groove that is concave upward from the lower disc surface. Each branch air passage (31) that rotates to the positive pressure section (71) is closely connected to and communicates with the positive pressure air passage (41). Each branch airway (31) that rotates to the negative pressure section (73) is closely connected to and communicates with the negative pressure airway (42); the sealing plate (4) is provided with a positive pressure air hole (43) and a negative pressure air hole (44) respectively corresponding to the positive pressure airway (41) and the negative pressure airway (42). One end of the positive pressure air hole (43) is connected to a positive pressure air source, and the other end is connected to the positive pressure airway (41). One end of the negative pressure air hole (44) is connected to a negative pressure air source, and the other end is connected to the negative pressure airway (42).

5. The novel dispensing system according to any one of claims 1-4, characterized in that: The air distribution plate (3) is fixed on the dispensing drum (1). Multiple branch air channels (31) are arranged around the central axis of the plate body in the circumferential direction according to the positions of multiple dispensing head assemblies (2). They are built into the plate body and are in the shape of L-shaped channels. The vertical section extends upward to the upper plate surface exposed on the air distribution plate (3), and the horizontal section extends radially outward to the outer circumference exposed on the air distribution plate (3) and connects with the air passage (28).

6. The novel dispensing system according to claim 1, characterized in that: As the dispensing drum (1) rotates, the smoke tube (8) in each dispensing smoke tank (11) passes through the positive pressure section (71), dispensing section (72), negative pressure section (73), and cleaning section (74) in sequence. When passing through the positive pressure section (71), negative pressure section (73), and cleaning section (74), the bottom is supported by the fixed support plate (13) on the dispensing drum (1). The filter tip end face and the glue outlet (27) of the dispensing head assembly (2) directly above are left with a vertical gap. When passing through the dispensing section (72), the bottom is supported by the lifting support plate (12) on the dispensing drum (1). The lifting plate (12) is a three-section bending structure, which consists of a lower plate section (121), an inclined plate section (122), and a higher plate section (123) in sequence along the rotation direction of the dispensing drum (1). The lower plate section (121) and the inclined plate section (122) are located at the junction of the positive pressure section (71) and the dispensing section (72), and are used for the smooth connection between the lifting plate (12) and the fixed plate (13). The lower plate section (121) and the fixed plate (13) are at the same height and connected. The lower end of the inclined plate section (122) is connected to the lower plate section (121), and the higher end is connected to the higher plate section (123). The bottom of the smoke tube (8) passing through the dispensing section (72) is supported by the higher plate section (123) of the lifting plate (12), and the end face of the filter tip is in contact with the dispensing outlet (27) of the dispensing head assembly (2) directly above.

7. The novel dispensing system according to claim 1, characterized in that: The dispensing station is located between the filling station and the sealing station. The dispensing drum (1) is connected between the filling drum of the filling station and the sealing drum of the sealing station. The smoke tubes (8) in each dispensing smoke groove (11) on the dispensing drum (1) are transferred to the sealing drum in sequence after passing through the dispensing section (72).

8. The novel dispensing system according to claim 1, characterized in that: The inner diameter of the dispensing port (27) of the dispensing head assembly (2) is set according to the diameter of the filter end face of the cigarette tube (8).

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