Empty pipe filter stick perfuming device and empty pipe filter stick manufacturing equipment

Abstract

The utility model relates to a blank pipe filter stick perfuming device and blank pipe filter stick manufacturing equipment, the blank pipe filter stick perfuming device comprises a plastifying device (10), a first forming device (20) and a first guide piece (30), the plastifying device (10) is configured to add a plasticizer to a tow (71), the first forming device (20) is arranged at the downstream of the plastifying device (10), the first forming device (20) comprises a first forming cavity (21), and the first guide piece (30) is arranged in the first forming cavity (21). The tow (71) is primarily formed in the first forming cavity (21), the first guide part (30) is arranged between the plasticizing device (10) and the first forming device (20), a first conveying channel (31) is arranged in the first guide part (30) and used for conveying an essence solution, the outlet end of the first guide part (30) is inserted into the first forming cavity (21), and the outlet end of the first guide part (30) is communicated with the first forming cavity (21). The outlet of the first conveying channel (31) is located in the first forming cavity (21), and the essence solution is added to the tows (71) in the forming process of the tows (71).

Description

Technical Field

[0001] The utility model relates to the technical field of filter rod processing, in particular to an empty tube filter rod fragrance adding device and empty tube filter rod manufacturing equipment. Background Art

[0002] At present, cigarettes on the market basically use filters to reduce tar and harm and improve the smoking flavor. Improving the smoking flavor basically means adding flavors or fragrance liquids to the acetate filter rod segment.

[0003] Currently, the method for adding fragrance is generally to apply the fragrance or fragrance liquid directly to the formed acetate filter rod. This method of adding fragrance to the filter rod results in the fragrance being located on the surface of the filter rod, making the fragrance easily diffused. This significantly reduces the aroma content during inhalation, and the vaping experience is not significantly improved.

[0004] It should be noted that the information disclosed in the background technology section of this utility model is intended solely to enhance understanding of the overall background of this utility model and should not be construed as an admission or any form of implication that such information constitutes prior art already known to those skilled in the art. The above statements are intended solely to provide background technology information related to this utility model and do not necessarily constitute prior art. Utility Model Content

[0005] The embodiments of the present utility model provide an empty tube filter stick fragrance adding device and an empty tube filter stick manufacturing device, which can effectively reduce the diffusion speed of the fragrance and improve the smoking experience.

[0006] According to one aspect of the present invention, there is provided an empty tube filter rod fragrance adding device, comprising:

[0007] a plasticizing device configured to add a plasticizer to the tow;

[0008] A first molding device, disposed downstream of the plasticizing device, the first molding device comprising a first molding cavity, in which the filament bundle is preliminarily molded; and

[0009] The first guide is arranged between the plasticizing device and the first molding device. The first conveying channel is provided inside the first guide. The first conveying channel is used to convey the flavor solution. The outlet end of the first guide is inserted into the interior of the first molding cavity so that the outlet of the first conveying channel is located inside the first molding cavity, and the flavor solution is added to the tow during the tow molding process.

[0010] In some embodiments, the first conveying channel includes a first conveying section and a second conveying section, the first conveying section extends along the axis of the first guide member, the second conveying section is connected to the outlet of the first conveying section, and the second conveying section is inclined relative to the first conveying section.

[0011] In some embodiments, the angle between the conveying direction of the first conveying section and the conveying direction of the second conveying section is an acute angle.

[0012] In some embodiments, the first conveying channel includes a plurality of second conveying segments, and the plurality of second conveying segments are evenly arranged along the circumference of the first conveying segment; and / or the plurality of second conveying segments are spaced apart along the axial direction of the first conveying segment.

[0013] In some embodiments, the empty tube filter rod flavoring device further includes a second guide member located downstream of the plasticizing device, the second guide member is connected to the inlet end of the first guide member, and a second conveying channel connected to the first conveying channel is provided inside the second guide member.

[0014] In some embodiments, an outer diameter of the second guide gradually decreases along a conveying direction of the second conveying channel.

[0015] In some embodiments, the diameter of the first delivery channel remains unchanged along its delivery direction; and / or the diameter of the second delivery channel remains unchanged along its delivery direction.

[0016] In some embodiments, the first guide member includes a first guide section, the outer periphery of the first guide section is provided with an external thread, the second guide member is provided with a mounting groove opening toward the first guide member, the groove wall of the mounting groove is provided with an internal thread, and the first guide section is inserted into the mounting groove so that the first guide member and the second guide member are connected by threads.

[0017] In some embodiments, the first guide member includes a second guide segment downstream of the first guide segment, the second guide segment having an outer diameter greater than an outer diameter of the first guide segment.

[0018] In some embodiments, the first guide member includes a third guide segment located downstream of the second guide segment, and an outer diameter of the third guide segment gradually decreases along the conveying direction of the first conveying channel.

[0019] In some embodiments, the first guide member includes a fourth guide segment located downstream of the third guide segment, the outlet of the first conveying channel is set at the fourth guide segment, the outer diameter of the fourth guide segment is less than or equal to the minimum outer diameter of the third guide segment, and the outer diameter of the fourth guide segment remains unchanged along the conveying direction of the first conveying channel.

[0020] In some embodiments, the empty tube filter rod flavoring device also includes a filament bundle collector, which is arranged downstream of the plasticizing device. The filament bundle collector includes a collecting chamber, the diameter of the collecting chamber decreases along the moving direction of the filament bundle, and the inlet end of the first guide is arranged inside the collecting chamber.

[0021] In some embodiments, the first forming device includes a hot air input port communicating with the first forming cavity, and the hot air input port is used to input hot air into the first forming cavity to form the filament bundle.

[0022] In some embodiments, the empty tube filter rod flavoring device also includes a second molding device arranged downstream of the first molding device, the second molding device includes a second molding cavity, the filament bundle is shaped in the second molding cavity, and the second molding device includes a cold air input port connected to the second molding cavity, and the cold air input port is used to input cold air into the second molding cavity to shape the filament bundle.

[0023] According to another aspect of the present invention, there is provided an empty tube filter rod manufacturing device, comprising the above-mentioned empty tube filter rod fragrance adding device.

[0024] Based on the above technical solution, the utility model adds the flavor solution to the filament bundle during the process of the filament bundle being formed in the first molding cavity, so that the flavor solution is located inside the empty tube filter rod formed after the filament bundle is formed, thereby effectively slowing down the diffusion of the flavor, reducing the diffusion speed of the flavor, reducing the loss of the flavor, maintaining the flavor of the suction, and improving the suction experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 Schematic diagram of the structure of some embodiments of the empty tube filter rod fragrance adding device provided by the utility model.

[0027] Figure 2 This is a schematic structural diagram of the first guide member in some embodiments of the empty tube filter rod fragrance adding device provided by the present invention.

[0028] In the picture:

[0029] 10. Plasticizing device; 20. First molding device; 21. First molding cavity; 30. First guide member; 31. First conveying channel; 311. First conveying section; 312. Second conveying section; 32. First guide section; 33. Second guide section; 34. Third guide section; 35. Fourth guide section; 40. Second guide member; 41. Second conveying channel; 42. Mounting groove; 50. Tow collector; 51. Collecting cavity; 60. Second molding device; 61. Second molding cavity; 70. Empty tube filter rod; 71. Tow; 80. Third molding device; 90. Fourth molding device; 100. Support platform. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments of the empty tube filter rod flavoring device provided by the present invention, the flavoring device includes a plasticizing device 10, a first molding device 20 and a first guide 30. The plasticizing device 10 is configured to add a plasticizer to the filament bundle 71. The first molding device 20 is arranged downstream of the plasticizing device 10. The first molding device 20 includes a first molding cavity 21. The filament bundle 71 is preliminarily formed in the first molding cavity 21. The first guide 30 is arranged between the plasticizing device 10 and the first molding device 20. A first conveying channel 31 is provided inside the first guide 30. The first conveying channel 31 is used to convey the flavor solution. The outlet end of the first guide 30 is inserted into the interior of the first molding cavity 21 so that the outlet of the first conveying channel 31 is located inside the first molding cavity 21, and the flavor solution is added to the filament bundle 71 during the molding process of the filament bundle 71.

[0033] In the above embodiment, the first guide member 30 is located downstream of the plasticizing device, and the outlet end of the first guide member 30 is inserted into the interior of the first molding cavity 21, and the outlet of the first conveying channel 31 is located inside the first molding cavity 21. Therefore, the flavor solution can be added to the filament bundle 71 during the molding process of the filament bundle 71 in the first molding cavity 21. In this way, the flavor solution can be located inside the empty tube filter rod 70 formed after the filament bundle 71 is molded, thereby effectively slowing down the diffusion of the flavor, reducing the diffusion speed of the flavor, reducing the loss of the flavor, maintaining the flavor of the suction, and improving the suction experience.

[0034] In some embodiments, the empty tube filter rod fragrance adding device further includes a driving member for driving the flow of the fragrance solution in the first delivery channel 31 so that the fragrance solution can be sprayed onto the filament bundle 71 in the form of a spray.

[0035] The driving member may be a pump, such as a constant force pump, to ensure uniform delivery and uniform spraying of the flavor solution, and to avoid uneven distribution of the flavor due to pressure fluctuations.

[0036] like Figure 2 As shown, in some embodiments, the first conveying channel 31 includes a first conveying section 311 and a second conveying section 312, the first conveying section 311 extends along the axis of the first guide member 30, the second conveying section 312 is connected to the outlet of the first conveying section 311, and the second conveying section 312 is inclined relative to the first conveying section 311.

[0037] By providing a second conveying section 312 inclined relative to the first conveying section 311, the flavor solution can be sprayed in an inclined direction. This can facilitate spraying the flavor solution onto the filament bundle 71 located on the periphery of the first guide member 30. On the other hand, it is beneficial to reduce the reversing angle of the first conveying channel 31 at the connection between the first conveying section 311 and the second conveying section 312, thereby reducing flow losses and improving the conveying efficiency of the flavor solution.

[0038] In some embodiments, the angle between the conveying direction of the first conveying section 311 and the conveying direction of the second conveying section 312 is an acute angle.

[0039] Compared with the solution of setting the above-mentioned angle to a right angle or an obtuse angle, the embodiment of the utility model sets the angle to an acute angle, which can effectively reduce the reversing angle of the first conveying channel 31 at the connection between the first conveying section 311 and the second conveying section 312, reduce flow loss, and improve the conveying efficiency of the essence solution.

[0040] In some embodiments, the angle between the conveying direction of the first conveying section 311 and the conveying direction of the second conveying section 312 may be 30° to 60°.

[0041] In some embodiments, the first conveying channel 31 includes multiple second conveying segments 312 , which are evenly arranged along the circumference of the first conveying segment 311 ; and / or, the multiple second conveying segments 312 are spaced apart along the axial direction of the first conveying segment 311 .

[0042] By providing a plurality of second conveying sections 312 , the essence solution can be sprayed out from the nozzles of the plurality of second conveying sections 312 , thereby increasing the spraying area.

[0043] The plurality of second conveying sections 312 are evenly arranged along the circumference of the first conveying section 311 , so that the essence solution can be evenly sprayed along the circumference.

[0044] The plurality of second conveying sections 312 are arranged at intervals along the axial direction of the first conveying section 311 , so as to increase the spraying length of the essence solution in the axial direction and improve the spraying efficiency.

[0045] In some embodiments, the plurality of second conveying segments 312 are evenly spaced apart along the axial direction of the first conveying segment 311 to achieve uniform axial spraying.

[0046] In some embodiments, the empty tube filter rod flavoring device also includes a second guide member 40 located downstream of the plasticizing device 10, the second guide member 40 is connected to the inlet end of the first guide member 30, and the interior of the second guide member 40 is provided with a second conveying channel 41 connected to the first conveying channel 31.

[0047] By disposing the second guide member 40 downstream of the plasticizing device 10 , the length of the first guide member 30 can be extended, thereby providing structural support for manufacturing the hollow tube filter rod 70 using the tow 71 .

[0048] The second conveying channel 41 is provided on the second guide member 40 , and the inlet of the flavor solution can be extended to the inlet of the second conveying channel 41 , so as to prevent the addition and conveyance of the flavor solution from affecting the wrapping and forming of the filament bundle 71 .

[0049] In some embodiments, the outer diameter of the second guide 40 gradually decreases along the conveying direction of the second conveying channel 41 .

[0050] By setting the outer diameter of the second guide member 40 to gradually decrease along the conveying direction of the second conveying channel 41, the outer diameter of the second guide member 40 can be gradually increased in the direction away from the first guide member 30, facilitating the matching connection between the inlet end of the second guide member 40 and the outlet of the flavor solution supply device.

[0051] In some embodiments, the diameter of the first delivery channel 31 remains unchanged along its delivery direction; and / or the diameter of the second delivery channel 41 remains unchanged along its delivery direction.

[0052] Setting the diameter of the first delivery channel 31 to remain constant along its delivery direction is beneficial to maintaining the stability of the delivery speed and delivery flow rate of the flavor solution in the first delivery channel 31 .

[0053] Setting the diameter of the second delivery channel 41 to remain constant along its delivery direction is beneficial to maintaining the stability of the delivery speed and delivery flow rate of the essence solution in the second delivery channel 41 .

[0054] In some embodiments, the diameter of the first delivery channel 31 is equal to the diameter of the second delivery channel 41. This configuration can maintain a stable delivery speed and flow rate of the flavor solution in the first delivery channel 31 and the second delivery channel 41, and prevent the flow rate of the flavor solution from changing at the transition point between the first delivery channel 31 and the second delivery channel 41.

[0055] In some embodiments, the first guide member 30 includes a first guide section 32, the outer periphery of the first guide section 32 is provided with an external thread, the second guide member 40 is provided with a mounting groove 42 opening toward the first guide member 30, the groove wall of the mounting groove 42 is provided with an internal thread, and the first guide section 32 is inserted into the mounting groove 42 so that the first guide member 30 and the second guide member 40 are connected by threads.

[0056] By providing the first guide section 32 and the mounting groove 42 , the threaded connection between the first guide member 30 and the second guide member 40 can be achieved.

[0057] The first guide member 30 and the second guide member 40 are connected by threads, which can facilitate connection and disassembly of the first guide member 30 and the second guide member 40 and facilitate replacement of the first guide member 30 and the second guide member 40 .

[0058] In some embodiments, the first guide member 30 includes a second guide segment 33 located downstream of the first guide segment 32 , and the outer diameter of the second guide segment 33 is larger than the outer diameter of the first guide segment 32 .

[0059] By setting the outer diameter of the second guide section 33 to be larger than the outer diameter of the first guide section 32, the second guide member 40 can be limited by the end face of the second guide section 33 close to the first guide section 32, and guidance can be provided for the screwing position of the second guide member 40, thereby improving the convenience of operation.

[0060] In some embodiments, the first guide member 30 includes a third guide segment 34 located downstream of the second guide segment 33 , and an outer diameter of the third guide segment 34 gradually decreases along the conveying direction of the first conveying channel 31 .

[0061] By setting a third guide section 34 downstream of the second guide section 33, and the outer diameter of the third guide section 34 gradually decreases along the conveying direction of the first conveying channel 31, the diameter of the filament bundle 71 wrapped around the outer periphery of the first guide member 30 can be gradually reduced, so that the filament bundle 71 can gradually shrink to a size that matches the core shaft size in the downstream first forming device 20, avoiding the need for the diameter of the filament bundle 71 to be suddenly reduced and cause jamming.

[0062] In some embodiments, the first guide member 30 includes a fourth guide section 35 located downstream of the third guide section 34, the outlet of the first conveying channel 31 is set at the fourth guide section 35, the outer diameter of the fourth guide section 35 is less than or equal to the minimum outer diameter of the third guide section 34, and the outer diameter of the fourth guide section 35 remains unchanged along the conveying direction of the first conveying channel 31.

[0063] By providing a fourth guide section 35 of equal diameter as the outlet end of the first guide member 30 , the first guide member 30 can be conveniently inserted into the first molding cavity 21 of the first molding device 20 and matched with the core shaft size in the first molding cavity 21 .

[0064] Furthermore, if the size of the mandrel within the first molding cavity 21 changes, the diameter of the outlet end of the first guide member 30 also needs to be adjusted. By providing the fourth guide segment 35, when manufacturing a new first guide member 30, the mold dimensions of the first, second, and third guide segments 32, 33, 34 can be retained, and only the mold dimensions of the fourth guide segment 35 need to be adjusted. This effectively improves the efficiency of mold changes and, in turn, the manufacturing efficiency of the first guide member 30.

[0065] In some embodiments, the empty tube filter rod flavoring device also includes a filament collector 50, which is arranged downstream of the plasticizing device 10. The filament collector 50 includes a collecting chamber 51, and the diameter of the collecting chamber 51 decreases along the moving direction of the filament bundle 71. The inlet end of the first guide member 30 is arranged inside the collecting chamber 51.

[0066] By providing the filament collector 50 and reducing the diameter of the collecting chamber 51 along the moving direction of the filament 71 , the filament 71 can be shrunk to gradually approach the size of the core shaft in the first molding cavity 21 .

[0067] The inlet end of the first guide member 30 is arranged inside the collecting chamber 51, so that the first guide member 30 can also be used as the central core axis for manufacturing the empty tube filter rod 70, so that the filament bundle 71 is wrapped around the outer periphery of the first guide member 30 to produce a filter rod with a hollow center. At the same time, it is also convenient for the fragrance solution sprayed by the first guide member 30 to be sprayed on the inner wall of the central cavity of the empty tube filter rod 70.

[0068] In some embodiments, the first molding device 20 includes a hot air input port in communication with the first molding cavity 21 , and the hot air input port is used to input hot air into the first molding cavity 21 to mold the filament bundle 71 .

[0069] The first forming device 20 is a thermoforming device, which realizes thermoforming of the filament bundle 71 by hot air.

[0070] In some embodiments, the empty tube filter rod flavoring device also includes a second molding device 60 arranged downstream of the first molding device 20, the second molding device 60 includes a second molding cavity 61, the filament bundle 71 is shaped in the second molding cavity 61, and the second molding device 60 includes a cold air input port connected to the second molding cavity 61, and the cold air input port is used to input cold air into the second molding cavity 61 to shape the filament bundle 71.

[0071] The second forming device 60 is a cold setting device, which can achieve cooling and setting of the filament bundle 71 through cold air.

[0072] In some embodiments, a third molding device 80 and a fourth molding device 90 may be further provided downstream of the second molding device 60 . The third molding device 80 and the fourth molding device 90 may further shape the filter rod by cold air.

[0073] Based on the empty tube filter rod fragrance adding device in each of the above embodiments, the present invention further provides an empty tube filter rod manufacturing device, which includes the above empty tube filter rod fragrance adding device.

[0074] The positive technical effects of the empty tube filter rod fragrance adding device in the above-mentioned embodiments are also applicable to the empty tube filter rod manufacturing equipment, and will not be described in detail here.

[0075] The following is combined with Figure 1 and 2 The structure and working process of an embodiment of the empty tube filter rod fragrance adding device provided by the utility model are described as follows:

[0076] like Figure 1 As shown, the empty tube filter rod flavoring device includes a plasticizing device 10, a first molding device 20, a first guide member 30, a second guide member 40, a tow collector 50, a second molding device 60, a third molding device 80, a fourth molding device 90 and a supporting platform 100.

[0077] The plasticizing device 10 is used to add a plasticizer to the filament bundle 71 to increase the hardness of the filament bundle 71 and facilitate subsequent molding. The plasticizer can be glycerin or the like.

[0078] The first molding device 20 is disposed downstream of the plasticizing device 10. The first guide 30, the second guide 40 and the tow collector 50 are disposed between the first molding device 20 and the plasticizing device 10.

[0079] The outlet end of the first guide member 30 is partially inserted into the first molding cavity 21 of the first molding device 20. The second guide member 40 is connected upstream of the first guide member 30. The inlet end of the first guide member 30 and the majority of the second guide member 40 are located within the collection cavity 51 of the tow collector 50. The tow collector 50 is mounted on the outside of the first guide member 30 and the second guide member 40. The output end of the first guide member 30 and the input end of the second guide member 40 are located outside the tow collector 50.

[0080] The first forming device 20 , the second forming device 60 , the third forming device 80 and the fourth forming device 90 are sequentially arranged on the supporting platform 100 along the moving direction of the filament bundle 71 .

[0081] There is a gap between each of the first forming device 20, the second forming device 60, the third forming device 80 and the fourth forming device 90, and the size of the gap is adjustable. By adjusting the size of the gap between two adjacent forming devices, the forming process and quality of the filter rod can be changed.

[0082] A first molding cavity 21 is provided inside the first molding device 20 . Hot air can be input into the first molding cavity 21 through a hot air input port. After the filament bundle 71 enters the first molding cavity 21 , it is molded under the action of the hot air.

[0083] A second molding cavity 61 is provided inside the second molding device 60 . Cold air can be input into the second molding cavity 61 through the cold air input port. After the filament bundle 71 enters the second molding cavity 61 , it is initially shaped under the cooling effect of the cold air.

[0084] The third molding device 80 and the fourth molding device 90 are also provided with molding cavities inside, into which cold air can be input to further shape the filter rods.

[0085] Core shafts of the same shape, such as circular, triangular, pentagonal or various flower shapes, can be set in the first molding cavity 21, the second molding cavity 61, and the molding cavities inside the third molding device 80 and the fourth molding device 90, so as to produce a hollow tube filter rod 70 with a central cavity in the shape of a circle, triangle, pentagonal or various flower shapes.

[0086] Along the moving direction of the filament tow 71, the outer diameter of the filament tow collector 50 first remains unchanged, then gradually decreases, and then remains unchanged.

[0087] like Figure 2 As shown, the first guide member 30 includes a first guide segment 32 , a second guide segment 33 , a third guide segment 34 and a fourth guide segment 35 which are sequentially arranged along the conveying direction.

[0088] The first guide section 32 is a constant diameter section with an external thread on its outer circumference. The second guide section 33 is a constant diameter section with an outer diameter larger than that of the first guide section 32. The third guide section 34 is a tapered section with an outer diameter that gradually decreases along the conveying direction. The fourth guide section 35 is also a constant diameter section.

[0089] A first conveying channel 31 is provided inside the first guide member 30. The first conveying channel 31 includes a first conveying section 311 and a second conveying section 312. The first conveying section 311 extends from the end face of the first guide section 32 away from the second guide section 33, through the second guide section 33 and the third guide section 34, and to a position near the end of the fourth guide section 35 away from the third guide section 34. The first conveying section 311 is of a constant diameter design, and the diameter of the first conveying section 311 remains unchanged along the conveying direction. The entrance of the first conveying section 311 is located at the end face of the first guide section 32 away from the second guide section 33, and the other end of the first conveying section 311 is closed. The second conveying section 312 is connected to the side of the first conveying section 311.

[0090] The plurality of second conveying segments 312 are arranged at intervals along the extending direction of the first conveying segment 311 , and the plurality of second conveying segments 312 are arranged circumferentially at the same axial position.

[0091] The angle between the conveying direction of the second conveying section 312 and the conveying direction of the first conveying section 311 is 60°.

[0092] The outer diameter of the second guide member 40 gradually decreases along the conveying direction, and a second conveying channel 41 of constant diameter is defined within the second guide member 40. A mounting groove 42, opening toward the first guide member 30, is defined at the end of the second guide member 40 adjacent to the first guide member 30. The mounting groove 42 is internally threaded, and the first guide section 32 is inserted into the mounting groove 42 and threadedly connected thereto.

[0093] The forming process of the empty tube filter rod is as follows:

[0094] refer to Figure 1 As shown, the tow 71 passes through the plasticizing device 10 from right to left to add plasticizer; then enters the tow collector 50, and the tow is wrapped around the periphery of the second guide member 40 and the first guide member 30 and gradually shrinks; then enters the first molding device 20 for thermoforming. During the thermoforming process, the flavor solution enters the first guide member 30 from the second guide member 40 driven by the constant force pump, and then is sprayed out through the outlet of the first guide member 30 and sprayed on the inner wall of the hollow cavity of the empty tube filter rod 70 formed by the tow 71; then it is cooled and shaped by the second molding device 60, and further cooled and shaped by the third molding device 80 and the fourth molding device 90, and finally the empty tube filter rod 70 is made.

[0095] The embodiment of the empty tube filter stick flavoring device provided by the utility model sprays the flavor solution onto the inner wall of the hollow cavity of the empty tube filter stick after adding the plasticizer during the thermoforming process of the filter stick, which can effectively slow down the diffusion of the flavor, preserve the flavor, and enhance the smoking experience; it is also beneficial to improve the uniformity of the flavor spraying, achieve uniform distribution of the flavor, and improve the quality of the smoke and oral comfort.

[0096] The embodiment of the empty tube filter rod flavoring device provided by the utility model can be used to manufacture cigarette filter rods, and can also be used to manufacture heated cigarette filter rods.

[0097] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other and will not be repeated herein for the sake of brevity.

[0098] Those skilled in the art will understand that, in the above-mentioned method of a specific embodiment, the writing order of each step does not mean a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that without departing from the principles of the present invention, the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents. These modifications and equivalent replacements should all be included in the scope of the technical solutions claimed for protection in the present invention.

Claims

1. An empty tube filter rod fragrance adding device, characterized in that: include: a plasticizing device (10) configured to add a plasticizer to the filament bundle (71); a first molding device (20) disposed downstream of the plasticizing device (10), the first molding device (20) comprising a first molding cavity (21), wherein the filament bundle (71) is preliminarily molded in the first molding cavity (21); and A first guide member (30) is provided between the plasticizing device (10) and the first molding device (20); a first conveying channel (31) is provided inside the first guide member (30); the first conveying channel (31) is used to convey the fragrance solution; the outlet end of the first guide member (30) is inserted into the inside of the first molding cavity (21) so that the outlet of the first conveying channel (31) is located inside the first molding cavity (21); and the fragrance solution is added to the filament bundle (71) during the molding process of the filament bundle (71).

2. The empty tube filter rod fragrance adding device according to claim 1, characterized in that: The first conveying channel (31) comprises a first conveying section (311) and a second conveying section (312), wherein the first conveying section (311) extends along the axis of the first guide member (30), and the second conveying section (312) is connected to the outlet of the first conveying section (311), and the second conveying section (312) is inclined relative to the first conveying section (311).

3. The empty tube filter rod fragrance adding device according to claim 2, characterized in that: The angle between the conveying direction of the first conveying section (311) and the conveying direction of the second conveying section (312) is an acute angle.

4. The empty tube filter rod fragrance adding device according to claim 2, characterized in that: The first conveying channel (31) comprises a plurality of second conveying sections (312), wherein the plurality of second conveying sections (312) are evenly arranged along the circumference of the first conveying section (311); and / or the plurality of second conveying sections (312) are spaced apart along the axial direction of the first conveying section (311).

5. The empty tube filter rod fragrance adding device according to claim 1, characterized in that: The invention also includes a second guide member (40) located downstream of the plasticizing device (10), wherein the second guide member (40) is connected to the inlet end of the first guide member (30), and a second conveying channel (41) communicating with the first conveying channel (31) is provided inside the second guide member (40).

6. The empty tube filter rod fragrance adding device according to claim 5, characterized in that: The outer diameter of the second guide member (40) gradually decreases along the conveying direction of the second conveying channel (41).

7. The empty tube filter rod fragrance adding device according to claim 5, characterized in that: The diameter of the first conveying channel (31) remains unchanged along its conveying direction; and / or the diameter of the second conveying channel (41) remains unchanged along its conveying direction.

8. The empty tube filter rod fragrance adding device according to claim 5, characterized in that: The first guide member (30) comprises a first guide section (32), the outer periphery of which is provided with an external thread, the second guide member (40) is provided with a mounting groove (42) opening toward the first guide member (30), the groove wall of the mounting groove (42) is provided with an internal thread, and the first guide section (32) is inserted into the mounting groove (42) so that the first guide member (30) and the second guide member (40) are connected by threads.

9. The empty tube filter rod fragrance adding device according to claim 8, characterized in that: The first guide member (30) includes a second guide section (33) located downstream of the first guide section (32), and the outer diameter of the second guide section (33) is larger than the outer diameter of the first guide section (32).

10. The empty tube filter rod fragrance adding device according to claim 9, characterized in that: The first guide member (30) comprises a third guide section (34) located downstream of the second guide section (33), and the outer diameter of the third guide section (34) gradually decreases along the conveying direction of the first conveying channel (31).

11. The empty tube filter rod fragrance adding device according to claim 10, characterized in that: The first guide member (30) includes a fourth guide section (35) located downstream of the third guide section (34); the outlet of the first conveying channel (31) is arranged at the fourth guide section (35); the outer diameter of the fourth guide section (35) is smaller than or equal to the minimum outer diameter of the third guide section (34); and the outer diameter of the fourth guide section (35) remains unchanged along the conveying direction of the first conveying channel (31).

12. The empty tube filter rod fragrance adding device according to claim 1, characterized in that: It also includes a filament bundle collector (50), which is arranged downstream of the plasticizing device (10), and the filament bundle collector (50) includes a collecting chamber (51), the diameter of the collecting chamber (51) decreases along the moving direction of the filament bundle (71), and the inlet end of the first guide member (30) is arranged inside the collecting chamber (51).

13. The empty tube filter rod fragrance adding device according to claim 1, characterized in that: The first molding device (20) comprises a hot air input port connected to the first molding cavity (21), and the hot air input port is used to input hot air into the first molding cavity (21) to mold the filament bundle (71).

14. The empty tube filter rod fragrance adding device according to claim 1, characterized in that: The invention also includes a second molding device (60) arranged downstream of the first molding device (20), the second molding device (60) includes a second molding cavity (61), the filament bundle (71) is shaped in the second molding cavity (61), and the second molding device (60) includes a cold air input port connected to the second molding cavity (61), and the cold air input port is used to input cold air into the second molding cavity (61) to shape the filament bundle (71).

15. An empty tube filter rod manufacturing device, characterized in that: The device comprises the empty tube filter rod fragrance adding device according to any one of claims 1 to 14.

Images