Cigarette end folding mechanism and cigarette end sealing assembly

Abstract

The utility model provides a cigarette end folding mechanism which comprises a bending drum wheel and a bending mechanism. A containing groove used for containing cigarettes is formed in the circumferential surface of the bending drum wheel. The bending mechanism is located on one side of the bending drum wheel in the axial direction of the bending drum wheel. The bending mechanism comprises a first mounting ring and a bending unit; the first mounting ring is connected with the bending drum wheel and can rotate synchronously with the bending drum wheel; and the bending unit is arranged on the first mounting ring and corresponds to the containing groove, and the bending unit can move in the axial direction of the bending drum wheel so as to bend the extended tipping paper at the tobacco section port of the cigarette in the containing groove. Meanwhile, the utility model further provides a cigarette end sealing assembly. Compared with the prior art, the cigarette end folding mechanism and the cigarette end sealing assembly have the advantages that extended tipping paper can be bent, and end sealing in the heating cigarette production process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of novel tobacco, in particular to a cigarette end folding mechanism and a cigarette end sealing component. Background Art

[0002] Heated cigarettes (i.e. heat-not-burn cigarettes) are a new type of tobacco product, which has been favored by consumers due to its low harm and better taste, and the market size is expanding rapidly. Heated cigarettes need to be used with heated smoking devices. When smoking, the smoker needs to insert the tobacco segment of the heated cigarette into the heating chamber of the heating device, and the heating element set in the heating chamber heats the tobacco material in the tobacco segment, thereby generating an aerosol for smoking.

[0003] The heated cigarettes in the prior art can be roughly divided into particle-type heated cigarettes and thin-sheet-type heated cigarettes. Thin-sheet-type heated cigarettes refer to heated cigarettes in which the smoke-generating material in the tobacco segment is a tobacco material thin sheet. When smoking a thin-sheet-type heated cigarette, the tobacco material thin sheet in the tobacco segment is easy to accidentally fall into the heating chamber, so that the smoker needs to clean the heating chamber after smoking.

[0004] If the ends of the tobacco segments can be sealed during the production of heated cigarettes, the tobacco material sheets in the tobacco segments can be effectively prevented from accidentally falling off. Figure 1 As shown, the applicant has thought that if, during the production process of heated cigarettes, a sealing section 4 is reserved for the tipping paper 3 located at the port 2 of the tobacco segment 1, and the sealing section 4 is bent to achieve the sealing treatment of the port 2 of the tobacco segment 1, the tobacco material sheet in the tobacco segment 1 can be well blocked by the sealing section 4, which can better prevent the tobacco material sheet from accidentally falling.

[0005] How to achieve the bending of the end-sealing section 4 through a corresponding equipment structure during the production process is an urgent problem to be solved in this field. Utility Model Content

[0006] Aiming at the technical problem that tobacco material sheets of the prior art heated cigarettes are easy to accidentally fall into the heating device, the utility model provides a cigarette end folding mechanism, which is used to bend the sealing section reserved by the tipping paper to cover the sealing section at the end of the tobacco section, so as to seal the end of the tobacco section of the heated cigarette.

[0007] A cigarette end folding mechanism, comprising a bending drum and a bending mechanism;

[0008] The circumferential surface of the bent drum is provided with a receiving groove for receiving cigarettes;

[0009] Along the axial direction of the bending drum, the bending mechanism is located on one side of the bending drum;

[0010] The bending mechanism includes a first mounting ring and a bending unit;

[0011] The first mounting ring is connected to the bending drum and can rotate synchronously with the bending drum;

[0012] The bending unit is arranged on the first mounting ring and corresponds to the receiving groove. The bending unit can move along the axial direction of the bending drum to bend the extended tipping paper at the tobacco segment end of the cigarette at the receiving groove.

[0013] Preferably, a plurality of the bending units are provided on the first mounting ring;

[0014] Along the circumference of the first mounting ring, all the bending units are arranged in sequence and at intervals, and each of the bending units is arranged corresponding to one of the accommodating grooves.

[0015] Preferably, the bending unit comprises a first sliding rod and a bending mold;

[0016] The first sliding rod is slidably mounted on the first mounting ring;

[0017] The bending die is installed at one end of the first sliding rod close to the bending drum, and a bending cavity for accommodating bending of the cigarette is formed at the end of the bending die.

[0018] Preferably, a bending rib is provided at the bottom of the bending cavity, and the bending rib is a closing structure facing the center of the bending cavity.

[0019] Preferably, the bending mechanism further comprises a first extrusion ring;

[0020] The first extrusion ring is installed on the frame, and the surface of one end of the first extrusion ring close to the bending unit is an annular cam surface;

[0021] The other end of the first sliding rod abuts against the annular cam surface of the first extrusion ring, and the first sliding rod can slide along the annular cam surface of the first extrusion ring;

[0022] The annular cam surface of the first extrusion ring is used to squeeze the first sliding rod to drive the bending die to move axially along the bending drum to bend the extended tipping paper at the end of the tobacco segment of the cigarette.

[0023] Preferably, a first resetting elastic member is provided between the first sliding rod and the first mounting ring, and the first resetting elastic member is used for driving the bending mold to reset.

[0024] Preferably, it also includes an abutment mechanism;

[0025] Along the axial direction of the bending drum, the abutment mechanism is located at the other side of the bending drum;

[0026] The abutment mechanism comprises a second mounting ring and an abutment unit;

[0027] The second mounting ring is connected to the bending drum and can rotate synchronously with the bending drum;

[0028] The abutment unit is arranged on the second mounting ring and is arranged corresponding to the receiving groove. The abutment unit can move along the axial direction of the bending drum wheel to abut against the end of the filter segment of the cigarette at the receiving groove.

[0029] A plurality of the abutting units are provided, and each of the abutting units is arranged opposite to one of the bending units at intervals.

[0030] Preferably, the abutment unit comprises a second sliding rod and a first abutment plate;

[0031] The second sliding rod is slidably mounted on the second mounting ring;

[0032] The first abutment plate is mounted on one end of the second sliding rod close to the bending drum.

[0033] Preferably, the abutment mechanism further comprises a second extrusion ring;

[0034] The second extrusion ring is mounted on the frame, and a surface of one end of the second extrusion ring close to the abutting unit is an annular cam surface;

[0035] The other end of the second sliding rod abuts against the annular cam surface of the second extrusion ring, and the second sliding rod can slide along the annular cam surface of the second extrusion ring;

[0036] The annular cam surface of the second extrusion ring is used to squeeze the second sliding rod to drive the first abutment plate to move axially along the bending drum wheel to abut against the end of the filter segment of the cigarette at the accommodating groove.

[0037] Preferably, a second resetting elastic member is provided between the second sliding rod and the second mounting ring, and the second resetting elastic member is used for driving the first abutting plate to reset.

[0038] A cigarette end sealing assembly, comprising a cigarette end folding mechanism and a cigarette flattening mechanism as described in any one of the above;

[0039] The cigarette flattening mechanism is arranged at the rear side of the cigarette end folding mechanism, and is used for receiving the cigarette sent out by the cigarette end folding mechanism, and pressing and flattening the end of the cigarette.

[0040] Preferably, the cigarette leveling mechanism comprises a leveling drum and a leveling mechanism;

[0041] The circumferential surface of the leveling drum is provided with a receiving groove for receiving the cigarettes;

[0042] The said leveling mechanism is provided with two, and along the axial direction of the said leveling drum, the two said leveling mechanisms are located at the opposite sides of the said leveling drum;

[0043] The leveling mechanism includes a third mounting ring and a leveling unit;

[0044] The third mounting ring is connected to the leveling drum and can rotate synchronously with the leveling drum;

[0045] The flattening unit is arranged on the third mounting ring and corresponds to the receiving groove. The flattening unit can move along the axial direction of the flattening drum to squeeze and flatten the end of the cigarette at the receiving groove.

[0046] Preferably, a plurality of the leveling units are provided on the third mounting ring;

[0047] Along the circumference of the third mounting ring, all the flattening units are arranged in sequence and at intervals, and each of the flattening units is arranged corresponding to one of the receiving grooves.

[0048] Preferably, the leveling unit comprises a third sliding rod and a leveling plate;

[0049] The third sliding rod is mounted on the third mounting ring;

[0050] The leveling plate is mounted on one end of the third sliding rod close to the leveling drum.

[0051] Preferably, the flattening mechanism further comprises a third extrusion ring;

[0052] The third extrusion ring is installed on the frame, and the surface of one end of the third extrusion ring close to the flattening unit is an annular cam surface;

[0053] The other end of the third sliding rod abuts against the annular cam surface of the third extrusion ring, and the third sliding rod can slide along the annular cam surface of the third extrusion ring;

[0054] The annular cam surface of the third extrusion ring is used to squeeze the third sliding rod to drive the leveling plate to move axially along the leveling drum wheel to abut against the end of the cigarette at the receiving groove.

[0055] Preferably, a third resetting elastic member is provided between the third sliding rod and the third mounting ring, and the third resetting elastic member is used for driving the screed plate to reset.

[0056] Compared with the prior art, the cigarette end folding mechanism provided by the utility model comprises a bending drum and a bending mechanism; a receiving groove for receiving cigarettes is provided on the circumferential surface of the bending drum; the bending mechanism is located at one side of the bending drum along the axial direction of the bending drum; the bending mechanism comprises a first mounting ring and a bending unit; the first mounting ring is connected to the bending drum and can rotate synchronously with the bending drum; the bending unit is arranged on the first mounting ring and arranged corresponding to the receiving groove, and the bending unit can move along the axial direction of the bending drum to bend the extended tipping paper at the tobacco segment end of the cigarette at the receiving groove. The cigarette end folding mechanism is provided with the bending unit that can move along the axial direction of the drum, and when the bending drum conveys cigarettes, the tipping paper reserved on the cigarette can be squeezed and bent by the axial movement of the bending unit, so as to realize the bending of the reserved tipping paper, thereby realizing the sealing of the tobacco segment end by the tipping paper. The cigarette end folding mechanism operates reliably as a whole and can stably realize the bending of the extended tipping paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0058] Figure 1 A schematic diagram of the structure of a heated cigarette after rolling provided by an embodiment;

[0059] Figure 2 A schematic diagram of the structure of a cigarette end folding mechanism provided in an embodiment;

[0060] Figure 3 for Figure 2 A partial enlarged view of area A shown;

[0061] Figure 4 for Figure 2 A schematic diagram of the structure of the bending unit shown;

[0062] Figure 5 for Figure 4 The structural schematic diagram of the bending mold shown;

[0063] Figure 6 A schematic structural diagram of a cigarette flattening mechanism provided in one embodiment. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] It should be noted that when a component is referred to as being "fixed on", "installed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0066] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0068] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0069] The utility model provides a cigarette end folding mechanism, which includes a bending drum wheel and a bending mechanism; a receiving groove for receiving cigarettes is provided on the circumferential surface of the bending drum wheel; the bending mechanism is located at one side of the bending drum wheel along the axial direction of the bending drum wheel; the bending mechanism includes a first mounting ring and a bending unit; the first mounting ring is connected to the bending drum wheel and can rotate synchronously with the bending drum wheel; the bending unit is arranged on the first mounting ring and arranged corresponding to the receiving groove, and the bending unit can move along the axial direction of the bending drum wheel to bend the extended tipping paper at the tobacco segment end of the cigarette at the receiving groove. The cigarette end folding mechanism is provided with the bending unit that can move along the axial direction of the drum wheel, and when the bending drum wheel conveys cigarettes, the tipping paper reserved on the cigarette can be squeezed and bent by the axial movement of the bending unit, so as to realize the bending of the reserved tipping paper, thereby realizing the sealing of the tobacco segment end by the tipping paper. The cigarette end folding mechanism operates reliably as a whole and can stably realize the bending of the extended tipping paper.

[0070] Please refer to Figures 1 to 5 This embodiment provides a cigarette end folding mechanism 100, which is specifically applied to the production of thin-sheet heated cigarettes and is used to bend and seal the tipping paper extending from the end of the thin-sheet heated cigarette. Figure 1 As shown, the cigarette end folding mechanism 100 is used to bend the sealing section 4 extended from the tipping paper 3 toward the center of the heated cigarette, so that the end 2 of the tobacco segment 1 finally produced is blocked by the sealing section 4, thereby achieving end sealing in the production process of the heated cigarette.

[0071] The cigarette end folding mechanism 100 includes a bending drum (not shown) and a bending mechanism 10. A receiving groove for receiving cigarettes is provided on the circumferential surface of the bending drum. The bending drum adopts the drum used for conveying cigarettes in the prior art, that is, a receiving groove is provided on its circumferential surface, and cigarettes can be received in the receiving groove, and a negative pressure mechanism is connected to the inside thereof, and the cigarettes are fixed in the receiving groove by negative pressure suction, which is well known in the art and will not be described in detail here. Specifically, the bending drum is arranged at Figure 2 In area B shown.

[0072] Along the axial direction of the bending drum, the bending mechanism 10 is located on one side of the bending drum. It is understandable that when the bending drum conveys the cigarette, the tobacco segment 1 of the cigarette is located on the side facing the bending mechanism 10 .

[0073] The bending mechanism 10 includes a first mounting ring 11 and a bending unit 12. The first mounting ring 11 is connected to the bending drum, and the first mounting ring 11 can rotate synchronously with the bending drum. In other words, when the bending drum is driven to rotate, it will synchronously drive the first mounting ring 11 to rotate.

[0074] The bending unit 12 is arranged on the first mounting ring 11 and is arranged corresponding to the receiving groove. The bending unit 12 can move along the axial direction of the bending drum to bend the extended tipping paper 3 (i.e. the sealing section 4) at the end 2 of the tobacco section 1 of the cigarette at the receiving groove.

[0075] The operating principle of the cigarette end folding mechanism 100 is as follows: after the bending drum receives the cigarette, the bending drum drives the cigarette to move by its own rotation. When it moves to a certain position, the bending unit 12 moves axially to come into contact with the sealing section 4 on the cigarette, and squeezes and bends the sealing section 4, so that the sealing section 4 is bent toward the center of the cigarette, thereby achieving end sealing and shielding of the port 2 through the sealing section 4.

[0076] Preferably, in one embodiment, a plurality of the bending units 12 are provided on the first mounting ring 11. Along the circumference of the first mounting ring 11, all the bending units 12 are arranged in sequence and spaced apart, and each bending unit 12 is arranged corresponding to one of the receiving grooves. This structure can realize continuous production, and during the rotating conveying process of the bending drum, multiple cigarettes can be conveyed at the same time, and the multiple cigarettes are gradually bent and sealed, which can better improve production efficiency.

[0077] Preferably, in one embodiment, the bending unit 12 includes a first sliding rod 121 and a bending die 122. The first sliding rod 121 is slidably mounted on the first mounting ring 11. The bending die 122 is mounted on one end of the first sliding rod 121 close to the bending drum, and a bending cavity 1221 for accommodating the bending of the cigarette is provided at the end of the bending die 122. That is, in this embodiment, the first sliding rod 121 is moved axially, thereby driving the bending die 122 to move axially. When the bending die 122 moves to a certain distance, the sealing section 4 on the cigarette and the head of the tobacco section 1 enter the bending cavity 1221, and the sealing section 4 is squeezed and bent by the inner wall of the bending cavity 1221, thereby achieving the sealing of the port 2.

[0078] Preferably, in one embodiment, a bending rib 1222 is provided at the bottom of the bending cavity 1221, and the bending rib 1222 is a closing structure toward the center of the bending cavity 1221. That is, in the bending cavity 1221, the portion of the bending rib 1222 located at the center is more deeply recessed than the portion located at the side, so that the surface of the bending rib 1222 in contact with the cigarette is an inclined surface closing toward the center, and the sealing segment 4 is closed toward the center of the tobacco segment 1 during the gradual movement of the bending mold 122.

[0079] Specifically, in one embodiment, the bending rib 1222 includes a plurality of bending rib units 1223 , and along the circumference of the bending mold 122 , all of the bending rib units 1223 are sequentially spaced apart.

[0080] Preferably, in one embodiment, the bending mechanism 10 further includes a first extrusion ring 13. The first extrusion ring 13 is mounted on a frame, wherein the frame may be an additional arrangement for the first extrusion ring 13, or a frame shared with other components, and it is only necessary to ensure the installation of the first extrusion ring 13 and ensure that the first extrusion ring 13 does not rotate synchronously with the first mounting ring 11. The surface of the first extrusion ring 13 close to one end of the bending unit 12 is an annular cam surface 131, that is, the surface of the first extrusion ring 13 close to one end of the bending unit 12 is annular, and the surface is a cam surface. The cam surface refers to: the axial protrusion size of each area on the annular surface is different and the adjacent areas are smooth transition structures, and relatively protruding protrusions are provided in some areas, and relatively concave concave parts are provided in another area. The annular cam surface 131 of the first extrusion ring 13 is used to squeeze the first sliding rod 121 to drive the bending die 122 to move axially along the bending drum wheel to bend the sealing section 4 at the port 2 of the tobacco section 1 of the cigarette. That is to say, in this embodiment, the power source for driving the axial movement of the bending unit 12 is the annular cam surface 131 on the first extrusion ring 13. When the first sliding rod 121 slides along the annular cam surface 131 of the first extrusion ring 13 and slides to the convex part of the annular cam surface 131, the annular cam surface 131 correspondingly squeezes the first sliding member 121, driving the first sliding member 121 to move axially toward the bending drum, thereby achieving extrusion and bending of the sealing segment 4.

[0081] Preferably, in one embodiment, a first reset elastic member is provided between the first sliding rod 121 and the first mounting ring 11, and the first reset elastic member is used to drive the bending mold 122 to reset. Specifically, in one embodiment, the first reset elastic member can be a spring. When the first sliding rod 121 slides along the annular cam surface 131 of the first extrusion ring 13 and leaves the raised portion of the annular cam surface 131, the first reset elastic member stretches, thereby driving the first sliding rod 121 to move axially away from the bending drum, driving the bending mold 122 to reset, so that the bending mold 122 is separated from the cigarette, and is ready to bend the next cigarette.

[0082] Preferably, in one embodiment, the cigarette end folding mechanism 100 further includes a butting mechanism 20. Along the axial direction of the bending drum, the butting mechanism 20 is located on the other side of the bending drum. That is, along the axial direction of the bending drum, the bending mechanism 10 and the butting mechanism 20 are located on opposite sides, so that the bending mechanism 10 and the butting mechanism 20 can correspondingly butt against the opposite ends of the cigarette. The butting mechanism 20 includes a second mounting ring 21 and a butting unit 22. The second mounting ring 21 is connected to the bending drum, and the second mounting ring 21 can rotate synchronously with the bending drum. The butting unit 22 is arranged on the second mounting ring 21 and corresponds to the receiving groove, and the butting unit 22 can move along the axial direction of the bending drum to butt against the filter segment end of the cigarette at the receiving groove. That is, when the cigarette end folding mechanism 100 is in operation, the abutting unit 22 can cooperate with the bending unit 12, and when the bending unit 12 moves axially to squeeze and bend the sealing section 4, the abutting unit 22 moves axially synchronously, and the abutting unit 22 abuts against the other end of the cigarette, thereby preventing the cigarette from moving axially when the bending unit 12 squeezes and bends the sealing section 4, thereby better ensuring the bending effect of the sealing section 4. A plurality of abutting units 22 are provided, and each abutting unit 22 is provided opposite to a bending unit 12 at intervals.

[0083] Preferably, in one embodiment, the abutment unit 22 comprises a second sliding rod 221 and a first abutment plate 222. The second sliding rod 221 is mounted on the second mounting ring 21. The first abutment plate 222 is mounted on an end of the second sliding rod 221 close to the bending drum. That is, in this embodiment, the first abutment plate 222 is driven by the axial sliding of the second sliding rod 221, and then the first abutment plate 222 abuts against the cigarette.

[0084] Preferably, in one embodiment, the abutment mechanism 20 further includes a second extrusion ring 23. The second extrusion ring 23 is mounted on a frame. Similarly, the frame on which the second extrusion ring 23 is mounted can be separately provided or shared with other components. It is only necessary to ensure that the second extrusion ring 23 does not rotate synchronously with the second mounting ring 21. The surface of the second extrusion ring 23 at one end close to the abutment unit 22 is an annular cam surface. The other end of the second sliding rod 221 abuts against the annular cam surface of the second extrusion ring 23, and the second sliding rod 221 can slide along the annular cam surface of the second extrusion ring 23. The annular cam surface of the second extrusion ring 23 is used to squeeze the second sliding rod 221 to drive the first abutment plate 222 to move axially along the bending drum to abut against the filter segment end of the cigarette at the receiving groove. That is to say, in this embodiment, the power to drive the second sliding rod 221 to move axially is also achieved by squeezing the cam surface.

[0085] Preferably, in one embodiment, a second resetting elastic member is provided between the second sliding rod 221 and the second mounting ring 21, and the second resetting elastic member is used to drive the first abutting plate 222 to reset. Specifically, in one embodiment, the second resetting elastic member is a spring. That is to say, in one embodiment, the structure and operating principle of the abutting mechanism 20 are similar to those of the bending mechanism 10, and the difference between the two is that the bending die 122 in the bending mechanism 10 is used to contact the cigarette, while the first abutting plate 222 in the abutting mechanism 20 is used to contact the cigarette.

[0086] Please refer to Figures 1 to 6 . At the same time, in one embodiment, a cigarette end sealing assembly is also provided, which includes the cigarette end folding mechanism 100 and the cigarette flattening mechanism 200. The cigarette flattening mechanism 200 is arranged at the rear side of the cigarette end folding mechanism 100, and is used to receive the cigarette sent out by the cigarette end folding mechanism 100, and squeeze and flatten the end of the cigarette. That is to say, after the cigarette end folding mechanism 100 bends the sealing section 4, the cigarette flattening mechanism 200 receives the cigarette again, and then squeezes and flattens the cigarette for a second time, so as to better ensure that the sealing section 4 is more flatly covered on the port 2, and the sealing effect is better ensured.

[0087] It can be understood that, in one embodiment, in order to better ensure the sealing effect, the inner surface of the sealing section 4 can be coated with a certain amount of glue.

[0088] Preferably, in one embodiment, the cigarette flattening mechanism 200 includes a flattening drum (not shown) and a flattening mechanism 30. A receiving groove for accommodating the cigarette is provided on the circumferential surface of the flattening drum. Similarly, the flattening drum adopts the drum used for conveying cigarettes in the prior art, that is, a receiving groove is provided on its circumferential surface, and the cigarettes can be accommodated in the receiving groove, and a negative pressure mechanism is connected to the inside thereof, and the cigarettes are fixed in the receiving groove by negative pressure suction, which is well known in the art and will not be described in detail here. Specifically, the flattening drum is arranged at Figure 6 At the C area shown. The flattening mechanism 30 is provided with two, and along the axial direction of the flattening drum, the two flattening mechanisms 30 are located on opposite sides of the flattening drum. The flattening mechanism 30 includes a third mounting ring 31 and a flattening unit 32. The third mounting ring 31 is connected to the flattening drum, and the third mounting ring 31 can rotate synchronously with the flattening drum. The flattening unit 32 is arranged on the third mounting ring 31 and corresponds to the receiving groove. The flattening unit 32 can move along the axial direction of the flattening drum to squeeze and flatten the end of the cigarette at the receiving groove. When the flattening drum conveys the cigarette, after conveying to a certain position, the flattening units 32 located on both sides move axially toward the cigarette, thereby abutting against the two ends of the cigarette, squeezing the two ends of the cigarette, so that the sealing section 4 is more evenly attached to the port 2.

[0089] Preferably, in one embodiment, the third mounting ring 31 is provided with a plurality of the flattening units 32, and along the circumference of the third mounting ring 31, all the flattening units 32 are sequentially arranged at intervals, and each flattening unit 32 is arranged corresponding to one receiving groove. This structure can realize continuous production, and during the rotation and conveying process of the flattening drum, multiple cigarettes can be conveyed at the same time, and the multiple cigarettes can be squeezed and flattened step by step, which can better improve production efficiency.

[0090] Preferably, in one embodiment, the flattening unit 32 comprises a third sliding rod 321 and a flattening plate 322. The third sliding rod 321 is mounted on the third mounting ring 31. The flattening plate 322 is mounted on one end of the third sliding rod 321 close to the flattening drum. That is, in this embodiment, the flattening plate 322 is driven by the axial sliding of the third sliding rod 321, and then the flattening plate 322 is pressed against the cigarette.

[0091] Preferably, in one embodiment, the leveling mechanism 30 further includes a third extrusion ring 33. The third extrusion ring 33 is mounted on a frame. Similarly, the frame can be separately provided or shared with other components. It is only necessary to ensure that the third extrusion ring 33 does not rotate synchronously with the third mounting ring 31. The surface of the third extrusion ring 33 close to one end of the leveling unit is an annular cam surface. The other end of the third sliding rod 321 abuts against the annular cam surface of the third extrusion ring 33, and the third sliding rod 321 can slide along the annular cam surface of the third extrusion ring 33. The annular cam surface of the third extrusion ring 33 is used to squeeze the third sliding rod 321 to drive the leveling plate 322 to move axially along the leveling drum to abut against the end of the cigarette at the receiving groove. That is to say, in this embodiment, the power to drive the third sliding rod 321 to move axially is also achieved by squeezing the cam surface.

[0092] Preferably, in one embodiment, a third resetting elastic member is provided between the third sliding rod 321 and the third mounting ring 31, and the third resetting elastic member is used to drive the leveling plate 322 to reset. Specifically, in one embodiment, the third resetting elastic member is a spring. That is to say, in one embodiment, the structure and operating principle of the leveling mechanism 30 are similar to those of the bending mechanism 10, and the difference between the two is that the bending die 122 in the bending mechanism 10 is used to contact the cigarette, while the leveling plate 322 in the leveling mechanism 30 is used to contact the cigarette.

[0093] The above is only an implementation method of the present invention. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the protection scope of the present invention.

Claims

1. A cigarette end folding mechanism, characterized in that: It includes a bending drum and a bending mechanism; The circumferential surface of the bending drum is provided with a receiving groove for receiving cigarettes; Along the axial direction of the bending drum, the bending mechanism is located on one side of the bending drum; The bending mechanism includes a first mounting ring and a bending unit; The first mounting ring is connected to the bending drum and can rotate synchronously with the bending drum; The bending unit is arranged on the first mounting ring and corresponds to the receiving groove. The bending unit can move along the axial direction of the bending drum to bend the extended tipping paper at the tobacco segment end of the cigarette at the receiving groove.

2. The cigarette end folding mechanism according to claim 1, characterized in that: The first mounting ring is provided with a plurality of the bending units; Along the circumference of the first mounting ring, all the bending units are arranged in sequence and at intervals, and each of the bending units is arranged corresponding to one of the accommodating grooves.

3. The cigarette end folding mechanism according to claim 2, characterized in that: The bending unit includes a first sliding rod and a bending mold; The first sliding rod is slidably mounted on the first mounting ring; The bending die is installed at one end of the first sliding rod close to the bending drum, and a bending cavity for accommodating bending of the cigarette is formed at the end of the bending die.

4. The cigarette end folding mechanism according to claim 3, characterized in that: A bending rib is disposed at the bottom of the bending cavity, and the bending rib is a closing structure facing the center of the bending cavity.

5. The cigarette end folding mechanism according to claim 3, characterized in that: The bending mechanism also includes a first extrusion ring; The first extrusion ring is installed on the frame, and the surface of one end of the first extrusion ring close to the bending unit is an annular cam surface; The other end of the first sliding rod abuts against the annular cam surface of the first extrusion ring, and the first sliding rod can slide along the annular cam surface of the first extrusion ring; The annular cam surface of the first extrusion ring is used to squeeze the first sliding rod to drive the bending die to move axially along the bending drum to bend the extended tipping paper at the end of the tobacco segment of the cigarette.

6. The cigarette end folding mechanism according to claim 5, characterized in that: A first resetting elastic member is disposed between the first sliding rod and the first mounting ring, and the first resetting elastic member is used to drive the bending mold to reset.

7. The cigarette end folding mechanism according to any one of claims 2 to 6, characterized in that: Also included is an abutment mechanism; Along the axial direction of the bending drum, the abutment mechanism is located at the other side of the bending drum; The abutment mechanism comprises a second mounting ring and an abutment unit; The second mounting ring is connected to the bending drum and can rotate synchronously with the bending drum; The abutment unit is arranged on the second mounting ring and is arranged corresponding to the receiving groove. The abutment unit can move along the axial direction of the bending drum wheel to abut against the end of the filter segment of the cigarette at the receiving groove. A plurality of the abutting units are provided, and each of the abutting units is arranged opposite to one of the bending units at intervals.

8. The cigarette end folding mechanism according to claim 7, characterized in that: The abutment unit comprises a second sliding rod and a first abutment plate; The second sliding rod is slidably mounted on the second mounting ring; The first abutment plate is mounted on one end of the second sliding rod close to the bending drum.

9. The cigarette end folding mechanism according to claim 8, characterized in that: The abutment mechanism further includes a second extrusion ring; The second extrusion ring is mounted on the frame, and a surface of one end of the second extrusion ring close to the abutting unit is an annular cam surface; The other end of the second sliding rod abuts against the annular cam surface of the second extrusion ring, and the second sliding rod can slide along the annular cam surface of the second extrusion ring; The annular cam surface of the second extrusion ring is used to squeeze the second sliding rod to drive the first abutment plate to move axially along the bending drum wheel to abut against the end of the filter segment of the cigarette at the accommodating groove.

10. The cigarette end folding mechanism according to claim 9, characterized in that: A second resetting elastic member is disposed between the second sliding rod and the second mounting ring, and the second resetting elastic member is used for driving the first abutting plate to reset.

11. A cigarette end-sealing assembly, characterized in that: It comprises a cigarette end folding mechanism and a cigarette flattening mechanism as claimed in any one of claims 1 to 10; The cigarette flattening mechanism is arranged at the rear side of the cigarette end folding mechanism, and is used for receiving the cigarette sent out by the cigarette end folding mechanism, and pressing and flattening the end of the cigarette.

12. The cigarette end-sealing assembly according to claim 11, characterized in that: The cigarette leveling mechanism comprises a leveling drum and a leveling mechanism; The circumferential surface of the leveling drum is provided with a receiving groove for receiving the cigarettes; The leveling mechanism is provided with two, and along the axial direction of the leveling drum, the two leveling mechanisms are located on opposite sides of the leveling drum; The leveling mechanism includes a third mounting ring and a leveling unit; The third mounting ring is connected to the leveling drum and can rotate synchronously with the leveling drum; The flattening unit is arranged on the third mounting ring and corresponds to the receiving groove. The flattening unit can move along the axial direction of the flattening drum to squeeze and flatten the end of the cigarette at the receiving groove.

13. The cigarette end-sealing assembly according to claim 12, characterized in that: The third mounting ring is provided with a plurality of the leveling units; Along the circumference of the third mounting ring, all the flattening units are arranged in sequence and at intervals, and each of the flattening units is arranged corresponding to one of the receiving grooves.

14. The cigarette end-sealing assembly according to claim 13, characterized in that: The leveling unit comprises a third sliding rod and a leveling plate; The third sliding rod is mounted on the third mounting ring; The leveling plate is mounted on one end of the third sliding rod close to the leveling drum.

15. The cigarette end-sealing assembly according to claim 14, characterized in that: The flattening mechanism also includes a third extrusion ring; The third extrusion ring is installed on the frame, and the surface of one end of the third extrusion ring close to the flattening unit is an annular cam surface; The other end of the third sliding rod abuts against the annular cam surface of the third extrusion ring, and the third sliding rod can slide along the annular cam surface of the third extrusion ring; The annular cam surface of the third extrusion ring is used to squeeze the third sliding rod to drive the leveling plate to move axially along the leveling drum wheel to abut against the end of the cigarette at the receiving groove.

16. The cigarette end-sealing assembly according to claim 15, characterized in that: A third resetting elastic member is provided between the third sliding rod and the third mounting ring, and the third resetting elastic member is used for driving the screed plate to reset.

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