A thin-film cigarette pack production device and method

Abstract

The present invention discloses a production device and method for a thin-film cigarette pack in the technical field of thin-film cigarette pack folding and heat-sealing, including an inner pack input unit, an inner pack spacing increasing unit, a thin-film paper supply unit, a folding and heat-sealing unit, and a cigarette pack output unit sequentially arranged along the conveying direction; the inner pack input unit can convey N inner packs in the vertical conveying direction; the inner pack spacing increasing unit is used to receive the lifted inner packs and increase the spacing between two adjacent inner packs; the folding and heat-sealing unit can fold and heat-seal the thin-film paper on the outer side of the inner pack and output the thin-film cigarette pack; the cigarette pack output unit is used to receive N heat-sealed and formed thin-film cigarette packs simultaneously and output them one by one along the conveying direction. The present invention adopts a two-line method for the transfer of inner packs and the folding and heat-sealing of thin-film cigarette packs, and outputs the thin-film cigarette packs in a single-line manner, reducing the running speeds of transmission, folding, and heat-sealing, improving the folding and heat-sealing quality of thin-film cigarette packs, and ensuring the production efficiency of the entire equipment.

Description

Technical Field

[0001] The invention relates to the technical field of folding and heat-sealing film paper cigarette packs, and in particular to a film paper cigarette pack production device and method. Background Art

[0002] As we all know, cigarettes need to be packaged before they are sold. For traditional single packs of cigarettes, they are mainly composed of cigarette groups, aluminum foil, inner frame paper, trademark paper and plastic transparent paper. The aluminum foil and plastic transparent paper work together to ensure the aroma of cigarettes and prevent them from getting damp. However, after a pack of cigarettes is opened, it is impossible to finish smoking them in a short time. At this time, the aluminum foil and plastic transparent paper are torn, the aroma of the cigarettes is easy to dissipate, and the cigarettes are easy to get damp, which affects the consumer's smoking experience.

[0003] With the continuous upgrading of the tobacco consumer market, consumers have higher and higher requirements for cigarettes, especially how to retain the aroma and taste of cigarettes for a long time after opening the cigarette pack, which has become the focus of cigarette manufacturers. In this consumer context, a plastic film paper cigarette pack with a reusable opening and closing function has been launched on the market and is becoming more and more popular among consumers.

[0004] There is a very important packaging process in the production of this kind of plastic film cigarette pack, which is heat sealing. The so-called heat sealing is to heat the folded and separated edges with a heater to deform the corresponding parts and bond them together to form a completely sealed plastic film cigarette pack.

[0005] However, this heat-sealing process has very high requirements for the blanching time. If the first blanching time is not enough, even if a second, third or more blanching is added during the subsequent production process, the heat-sealed part of the cigarette pack will still not stick firmly and will easily fall apart, thus forming an unqualified cigarette pack, which is not allowed by cigarette manufacturers.

[0006] If existing equipment and methods are used to produce plastic film cigarette packs, the existing equipment needs to be modified on a large scale. At the same time, multiple packaging wheels and packaging tracks are required to cooperate to complete the folding and heat sealing of the film cigarette packs. There will also be many unnecessary redundant packaging devices, resulting in a large equipment footprint and high cost.

[0007] More importantly, in order to ensure the heat-sealing quality of plastic film cigarette packs, the equipment operating speed can only be reduced (that is, the heat-sealing time is extended), resulting in the production efficiency of film cigarette packs being maintained at around 200 packs / minute. Such a packaging speed cannot meet the production needs of cigarette manufacturers.

[0008] Therefore, on the premise of ensuring the heat-sealing quality of the plastic film cigarette pack, how to improve the production efficiency of the film cigarette pack has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0009] In view of this, the purpose of the present invention is to provide a film cigarette pack production device to solve the technical problems of poor heat-sealing quality and low production efficiency of the existing plastic film cigarette pack.

[0010] The technical solution adopted by the present invention is: a film cigarette pack production device, including an inner pack input unit, an inner pack spacing increasing unit, a film paper supply unit, a folding and heat-sealing unit, and a cigarette pack output unit arranged in sequence along the conveying direction;

[0011] The inner pack input unit can convey N inner packs in the vertical conveying direction, and an inner pack lifting unit for lifting the inner packs upward is arranged below the inner pack input unit;

[0012] The inner pack spacing increasing unit is arranged above the inner pack input unit and is used to receive the lifted inner packs and increase the spacing between adjacent two inner packs in the vertical conveying direction; an inner pack pushing unit is arranged on one side of the inner pack spacing increasing unit, and the inner pack pushing unit is used to push the spaced inner packs and the film paper conveyed by the film paper supply unit into the folding and heat-sealing unit;

[0013] The folding and heat-sealing unit can fold and heat-seal the film paper on the outside of the inner pack and output the film paper cigarette pack;

[0014] The cigarette pack output unit is arranged on one side of the folding and heat-sealing unit along the vertical conveying direction and is used to receive N heat-sealed and formed film paper cigarette packs at the same time and output them one by one along the conveying direction;

[0015] Wherein, N is an integer greater than or equal to 2.

[0016] Preferably, the folding and heat-sealing unit includes a packaging wheel and a heat-sealing frame;

[0017] A first folding station, a second folding station, a first heat-sealing station, a second heat-sealing station, and a double-pack output station are arranged in sequence along the rotation direction of the packaging wheel, and a plurality of radial cigarette pack bins are circumferentially distributed on the packaging wheel;

[0018] Inner radial corner foldors are arranged on both axial sides of the radial cigarette pack bin, and the inner radial corner foldors can reciprocate in the radial direction of the packaging wheel and are used to fold the top folding angle of the film paper cigarette pack;

[0019] A lower circumferential shovel plate is arranged below the first folding station, and the lower circumferential shovel plate can reciprocate in the circumferential direction of the packaging wheel and is used to fold the bottom rear folding edge of the film paper cigarette pack;

[0020] Above the first folding station, a circumferential upper shovel plate is provided along the circumferential direction of the packaging wheel. The circumferential upper shovel plate can rotate relative to the packaging wheel and is used to fold the front folding edge at the bottom end of the thin-film cigarette pack.

[0021] On one side of the second folding station, an outer radial corner folder is provided. The outer radial corner folder can reciprocate along the radial direction of the packaging wheel and is used to fold the folding corner at the bottom end of the thin-film cigarette pack.

[0022] Between the first folding station and the second folding station, a lower-end shovel plate is provided. The lower-end shovel plate is arranged at both axial ends of the packaging wheel and can approach or move away from the second folding station, and is used to fold the rear folding edge of the thin-film cigarette pack.

[0023] Between the second folding station and the first heat-sealing station, an upper-end shovel plate is provided. The upper-end shovel plate is arranged at both axial ends of the packaging wheel and can approach or move away from the second folding station, and is used to fold the front folding edge of the thin-film cigarette pack.

[0024] The heat-sealing frame is coaxially arranged with the packaging wheel and can rotate relative to it, and an axial heater and a radial heater are provided on the heat-sealing frame.

[0025] The axial heater is arranged on both sides of the packaging wheel in the axial direction and can reciprocate along the axial direction of the packaging wheel, and is used to heat-seal the two side surfaces of the thin-film cigarette pack between the first heat-sealing station and the second heat-sealing station.

[0026] The radial heater is arranged outside the packaging wheel and can move along the radial direction of the packaging wheel, and is used to heat-seal the bottom surface of the thin-film cigarette pack between the first heat-sealing station and the second heat-sealing station.

[0027] At the double-pack output station, a double-pack pushing rod is provided. The double-pack pushing rod can reciprocate along the radial direction of the packaging wheel and is used to push the thin-film cigarette pack that rotates to the double-pack output station radially to the thin-film cigarette pack output unit.

[0028] Preferably, the circumferential upper shovel plate extends from the first folding station to the double-pack output station along the circumferential direction of the packaging wheel, is used to press and fix the bottom surface, and a circumferential slot hole matching the radial heater is provided on the circumferential upper shovel plate.

[0029] Preferably, upper baffles and lower baffles are provided at both axial ends of the packaging wheel. The upper baffles and lower baffles extend from the second folding station to the first heat-sealing station along the circumferential direction, and the radial distance between the upper baffles and the lower baffles is less than the height of the thin-film cigarette pack, and is used to press and fix the side surface of the thin-film cigarette pack during rotation.

[0030] Preferably, the inner package input unit includes at least two inner package conveyor belts arranged along the conveying direction. Two adjacent inner package conveyor belts are arranged side by side in the direction perpendicular to the conveying direction, and lugs for pushing the inner package to move along the conveying direction are equidistantly arranged on the surface of the inner package conveyor belt.

[0031] Preferably, fixed baffles for positioning the inner package in the direction perpendicular to the conveying direction are arranged on both sides of the inner package conveyor belt, and an avoidance gap for cooperating with the inner package lifting unit is formed between the fixed baffle and the inner package conveyor belt.

[0032] Preferably, the inner package lifting unit includes a lifting plate and an up-and-down swing link. The lifting plate is arranged directly below the avoidance gap. The swing ends of two parallel up-and-down swing links are rotatably connected to the lifting plate, so as to drive the lifting plate to lift and lower through the reciprocating swing of the up-and-down swing link.

[0033] Preferably, the cigarette pack output unit includes a cigarette pack conveyor belt and a die box. The cigarette pack conveyor belt is arranged in the direction perpendicular to the conveying direction. A plurality of die boxes are equidistantly arranged on the cigarette pack conveyor belt, and the intermittent stepping frequency of the cigarette pack conveyor belt is N times that of the intermittent stepping frequency of the packaging wheel.

[0034] Preferably, the inner package spacing increasing unit includes a horizontal swing link and a die box bin. The die box bin has a packet receiving station and a packet pushing station. The packet receiving station is directly above the downstream end of the inner package input unit, and the packet pushing station is located on the input side of the packaging wheel. The swing ends of two parallel horizontal swing links are rotatably connected to the top of the die box bin, so as to drive the die box bin to switch between the packet receiving station and the packet pushing station through the reciprocating swing of the horizontal swing link.

[0035] Another object of the present invention is to provide a method for producing a thin film cigarette pack, and the method includes the following steps:

[0036] S10: Receive the inner package output by the upstream device;

[0037] S20: Synchronously lift upward the inner packages distributed side by side in the direction perpendicular to the conveying direction;

[0038] S30: Increase the spacing between two adjacent inner packages;

[0039] S40: Synchronously push the inner package into the radial cigarette pack bin of the packaging wheel at the first folding station;

[0040] S50: At the first folding station, first fold the top folding angle of the thin film cigarette pack, and then fold the bottom rear folding edge of the thin film cigarette pack;

[0041] S60: Rotate the film cigarette pack to the second folding station by the rotation of the packaging wheel, and fold the front folding edge at the bottom of the film cigarette pack during the rotation.

[0042] S70: At the second folding station, first fold the folding corner at the bottom of the film cigarette pack, and then fold the rear folding edge and the front folding edge of the film cigarette pack successively.

[0043] S80: Drive the film cigarette pack to rotate intermittently between the first heat-sealing station, the second heat-sealing station and the double-pack output station by the rotation of the packaging wheel, and heat-seal the side and bottom of the film cigarette pack between the first heat-sealing station and the second heat-sealing station.

[0044] S90: First push the film cigarette pack radially out from the double-pack output station, then move the film cigarette pack along the vertical conveying direction, and finally convey the film cigarette pack one by one downstream to the downstream equipment at a fixed position along the conveying direction.

[0045] Advantages of the present invention:

[0046] The present invention adopts the principle of time division technology, and sequentially arranges an inner pack input unit, an inner pack distance increasing unit, a film paper supply unit, a folding and heat-sealing unit and a cigarette pack output unit along the inner pack conveying direction. First, the inner pack input unit receives a plurality of inner packs synchronously output by the upstream equipment, and conveys the inner packs downstream in a multi-path conveying manner along the conveying direction; then, the inner pack distance increasing unit increases the distance between adjacent two inner packs in the vertical conveying direction to meet the requirements of the folding and heat-sealing unit for the inner pack position; then, a plurality of inner packs and film paper are sent into the folding and heat-sealing unit at the same time, and folding is carried out first and then heat-sealing. Finally, the formed cigarette packs are conveyed to the cigarette pack output unit in a multi-path form, and the cigarette packs are output in a single path along the conveying direction, which not only ensures the heat-sealing effect of the film cigarette pack, but also doubles the production efficiency of the film cigarette pack. At the same time, the transformation of the existing equipment is realized, the production cost is reduced, and the floor area is reduced. Description of the drawings

[0047] Figure 1 is a three-dimensional schematic diagram of the film cigarette pack production device of the present invention;

[0048] Figure 2 is a front view of the film cigarette pack production device of the present invention;

[0049] Figure 3 is a packaging process route diagram of the present invention;

[0050] Figure 4 is a top view of the inner pack input unit and the inner pack distance increasing unit;

[0051] Figure 5 is a side view of the inner pack input unit and the inner pack distance increasing unit;

[0052] Figure 6 Is a three-dimensional schematic diagram of a folding heat-sealing unit;

[0053] Figure 7 Is a structural schematic diagram of a cigarette pack output unit;

[0054] Figure 8 Is a structural schematic diagram of a cigarette pack;

[0055] Figure 9 Is a three-dimensional view of the first perspective of a cigarette pack;

[0056] Figure 10 Is a three-dimensional view of the second perspective of a cigarette pack.

[0057] Explanation of the reference numerals in the figure:

[0058] I, inner pack input station; II, inner pack lifting station; III, inner pack pitch-changing station; IV, first folding station; V, second folding station; VI, first heat-sealing station; VII, second heat-sealing station; VIII, double-pack output station; IX, multi-pack input station; X, rejection station; XI, single-pack output station;

[0059] 100, inner pack input unit;

[0060] 110, inner pack conveyor belt; 120, lug; 130, fixed baffle; 140, avoidance gap; 150, flange;

[0061] 200, inner pack pitch-increasing unit;

[0062] 210, horizontal swing link; 220, die box bin; 230, fixed frame;

[0063] 221, first movable jaw; 222, second movable jaw;

[0064] 300, thin film paper supply unit;

[0065] 400, folding heat-sealing unit;

[0066] 410, packaging wheel; 420, heat-sealing frame; 430, cam;

[0067] 411, radial cigarette pack bin; 412, inner radial corner folder; 413, lower circumferential shovel plate; 414, upper circumferential shovel plate; 415, outer radial corner folder; 416, lower end face shovel plate; 417, upper end face shovel plate; 418, double-pack push rod; 419, wheel disc;

[0068] 421, axial heater; 422, radial heater;

[0069] 431, circumferential slot; 432, upper baffle; 433, lower baffle;

[0070] 500, cigarette pack output unit;

[0071] 510, cigarette pack conveyor belt; 520, die box; 530, cigarette pack push rod;

[0072] 600, inner pack lifting unit;

[0073] 610, lifting plate; 620, upper and lower swing link; 630, drive motor;

[0074] 700, inner pack pushing unit;

[0075] 710, pack push rod; 720, pack push link; 730, cigarette pack positioning plate;

[0076] 800, thin film paper cigarette pack;

[0077] 810, inner pack; 820, thin film paper; 830, front; 840, side; 841, front side folding edge; 842, rear side folding edge; 850, rear; 860, top surface; 870, bottom surface; 871, bottom front folding edge; 872, bottom rear folding edge; 880, top folding corner; 890, bottom folding corner. Detailed implementation manners

[0078] The following further elaborates in detail the specific implementation manners of the present invention with reference to the accompanying drawings. These implementation manners are only used to illustrate the present invention and are not intended to limit the present invention.

[0079] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0080] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0082] Example, as Figures 1 - 10 As shown, a thin-film cigarette pack production device can be used to transform an existing production line and produce thin-film cigarette packs 800; the device includes: an inner pack input unit 100, an inner pack spacing increasing unit 200, a thin-film paper supply unit 300, a folding and heat-sealing unit 400, and a cigarette pack output unit 500 that are sequentially arranged along the conveying direction.

[0083] The inner pack input unit 100 is arranged along the conveying direction, and the inner pack input unit 100 can convey N inner packs 810 in the vertical conveying direction, that is, the inner pack input unit 100 can convey N paths of inner packs 810 to the inner pack spacing increasing unit 200. And an inner pack lifting unit 600 is provided below the inner pack input unit 100, and the inner pack lifting unit 600 can lift the inner packs 810 upward to synchronously lift the N inner packs 810 conveyed by the inner pack input unit 100 to the inner pack spacing increasing unit 200 at a predetermined position.

[0084] The inner pack spacing increasing unit 200 is arranged above the inner pack input unit 100 and is used to receive the inner packs 810 lifted upward by the inner pack lifting unit 600 and increase the spacing between two adjacent inner packs 810 in the vertical conveying direction; an inner pack pushing unit 700 is provided on one side of the inner pack spacing increasing unit 200. The inner pack pushing unit 700 is arranged above the inner pack input unit 100 and can push the inner packs 810 along the conveying direction to synchronously push the inner packs 810 with increased spacing by the inner pack spacing increasing unit 200 and the thin-film paper 820 conveyed by the thin-film paper supply unit 300 into the folding and heat-sealing unit 400.

[0085] The folding and heat-sealing unit 400 can receive the N inner packs 810 and N sheets of thin-film paper 820 pushed by the inner pack pushing unit 700, fold the thin-film paper 820 outside the inner packs 810 and heat-seal it during the conveying process, and then intermittently convey the thin-film cigarette packs 800 to the cigarette pack output unit 500.

[0086] The cigarette pack output unit 500 is arranged on one side of the folding and heat-sealing unit 400 along the vertical conveying direction, and can receive N juxtaposed heat-sealed and formed thin-film cigarette packs 800 conveyed by the folding and heat-sealing unit 400, and output the thin-film cigarette packs 800 one by one along the conveying direction.

[0087] Wherein, N is an integer greater than or equal to 2.

[0088] The present invention adopts the principle of time-division technology, and sequentially arranges an inner pack input unit 100, an inner pack spacing increasing unit 200, a thin-film paper supply unit 300, a folding and heat-sealing unit 400, and a cigarette pack output unit 500 along the inner pack conveying direction. First, the inner pack input unit 100 receives a plurality of juxtaposed inner packs 810 output by the upstream equipment, and conveys the inner packs 810 to the inner pack spacing increasing unit 200 in a multi-path conveying manner along the conveying direction; then, the inner pack spacing increasing unit 200 increases the distance between two adjacent inner packs 810 in the vertical conveying direction to meet the position requirements of the folding and heat-sealing unit 400 for the inner packs 810; then, a plurality of inner packs 810 and thin-film paper 820 are sent into the folding and heat-sealing unit 400 at the same time, and the folding and heat-sealing unit 400 folds the thin-film paper 820 outside the inner packs 810 and heat-seals them. Finally, the formed thin-film cigarette packs 800 are conveyed to the cigarette pack output unit 500 in a multi-path form, and at the same time, the thin-film cigarette packs 800 are output in a single path along the conveying direction, which not only ensures the heat-sealing effect of the thin-film cigarette packs 800, but also doubles the production efficiency of the thin-film cigarette packs 800. At the same time, the transformation of the existing equipment is realized, the production cost is reduced, and the floor area is reduced.

[0089] In a specific embodiment, as Figure 1 、 Figure 2 shown, the folding and heat-sealing unit 400 includes a packaging wheel 410 and a heat-sealing frame 420. The number of the packaging wheels 410 is two or more, and all the packaging wheels 410 are coaxially arranged and can rotate synchronously. The axis of the packaging wheel 410 is perpendicular to the conveying direction of the inner packs 810.

[0090] Such a setting is because: in the existing production equipment, when producing the thin-film cigarette packs 800, the inner packs 810 are all conveyed in a single path. After reducing the operating speed of the equipment, the production efficiency of the thin-film cigarette packs 800 will be limited to about 200 packs per minute; at the same time, for the upstream equipment producing the inner packs 810, the inner packs 810 are output in a double-path juxtaposed form. In order to meet the single-path input requirements of the downstream trademark paper packaging equipment, the thin-film cigarette packs 800 need to be input in a single path.

[0091] In this embodiment, the folding heat-sealing unit 400 includes two packaging wheels 410 that are coaxially arranged and can rotate synchronously. The inner package 810 can be first folded and then heat-sealed through the packaging wheels 410, realizing the double-path folding heat-sealing operation of the inner package 810 and the thin film paper 820 in the folding heat-sealing unit. This can not only increase the production efficiency of the thin film paper cigarette pack 800 to 400 packs per minute, but also be directly docked with the upstream and downstream equipment to transform the existing production line and reduce the procurement cost of production equipment.

[0092] As Figure 1 、 Figure 2 shown, a first folding station, a second folding station, a first heat-sealing station, a second heat-sealing station, and a double-pack output station are sequentially arranged along the rotation direction of the packaging wheel 410. There are twelve radial cigarette pack bins 411 circumferentially distributed on the packaging wheel 410. During the intermittent rotation of the packaging wheel 410, each radial cigarette pack bin 411 can successively rotate to the first folding station, the second folding station, the first heat-sealing station, the second heat-sealing station, and the double-pack output station and stay.

[0093] Such a setting is because: above the packaging wheel 410, a first folding station, a second folding station, a first heat-sealing station, a second heat-sealing station, and a double-pack output station are sequentially arranged along the rotation direction of the packaging wheel 410, and multiple radial cigarette pack bins 411 are evenly distributed circumferentially on the packaging wheel 410; when the inner package pushing unit 700 pushes the inner package 810 and the thin film paper 820 into the radial cigarette pack bin 411, through the intermittent rotation of the packaging wheel 410, the inner package 810 and the thin film paper 820 in the radial cigarette pack bin 411 can successively rotate to the first folding station, the second folding station, the first heat-sealing station, and the second heat-sealing station, so as to fold the thin film paper 820 outside the inner package 810 at the first folding station and the second folding station, and heat-seal the thin film paper 820 folded outside the inner package 810 at the first heat-sealing station and the second heat-sealing station, realizing the folding operation and heat-sealing operation of the thin film paper 820 and the inner package 810 by a single packaging wheel 410, which helps to simplify the structure of the thin film paper cigarette pack 800 production device and reduce the floor area.

[0094] Preferably, the angle between the first folding station and the double-pack output station is 180°; the number of the radial cigarette pack bins 411 can be eight, ten, or twelve.

[0095] As Figure 1 、 Figure 2 shown, the radial cigarette pack bin 411 axially penetrates the entire packaging wheel 410, and inner radial corner fold devices 412 are provided on both axial sides of the radial cigarette pack bin 411. The inner radial corner fold devices 412 can reciprocate radially along the packaging wheel 410 and are used to fold the top folding angle 880 of the thin film paper cigarette pack 800.

[0096] Such a setting is because: the height of the radial cigarette packet bin 411 is adapted to the thickness of the film-wrapped cigarette packet 800. After the inner packet pushing unit 700 pushes the inner packet 810 and the film paper 820 into the radial cigarette packet bin 411 at the first folding station, the film paper 820 will be folded into a U shape under the action of the top wall and the bottom wall of the radial cigarette packet bin 411, that is, the folding of the front 830 and the back 850 of the film-wrapped cigarette packet 800 is completed; the inner radial corner folder 412 is slidably connected to the radial cigarette packet bin 411 along the radial direction, and the folding operation of the top folding corner 880 of the film-wrapped cigarette packet 800 can be completed through the radial movement of the inner radial corner folder 412 to fold the film paper 820.

[0097] Preferably, as Figure 1 、 Figure 2 shown, cams 430 are provided on both axial sides of the packaging wheel 410. The cams 430 are coaxially arranged with the packaging wheel 410 and can rotate relative to each other; the cams 430 are drivingly connected to the inner ends of the inner radial corner folders 412 for driving the inner radial corner folders 412 to move radially outwards and for driving the inner radial corner folders 412 to reset. For example: the inner ends of the inner radial corner folders 412 are installed in the annular grooves of the cams 430.

[0098] As Figure 2 shown, a lower circumferential shovel plate 413 is provided below the first folding station. The lower circumferential shovel plate 413 is attached to the outer circumferential surface of the packaging wheel 410 and can reciprocally swing along the circumferential direction of the packaging wheel 410 for folding the bottom rear folding edge 872 of the film-wrapped cigarette packet 800.

[0099] Such a setting is because: by providing the lower circumferential shovel plate 413 attached to the outer circumferential surface of the packaging wheel 410 below the first folding station, when the inner packet 810 is stationary in the radial cigarette packet bin 411 at the first folding station, the lower circumferential shovel plate 413 can be rotated counterclockwise in the circumferential direction of the packaging wheel 410 to drive the back 850 of the film paper 820 to fold upwards to form the bottom rear folding edge 872, thereby completing the folding operation of the bottom rear folding edge 872 of the film-wrapped cigarette packet 800.

[0100] As Figure 2 、 Figure 6 shown, an upper circumferential shovel plate 414 is fixedly arranged above the first folding station along the circumferential direction of the packaging wheel 410. The upper circumferential shovel plate 414 is attached to the outer circumferential surface of the packaging wheel 410 and can rotate relative to the packaging wheel 410 for folding the bottom front folding edge 871 of the film-wrapped cigarette packet 800.

[0101] Such a setting is because: above the first folding station, a circumferential front shovel plate 414 is fixedly arranged along the circumferential direction of the packaging wheel 410. When the packaging wheel 410 drives the inner package 810 and the thin film paper 820 in the radial cigarette package bin 411 to rotate from the first folding station to the second folding station, the circumferential front shovel plate 414 with a fixed position will drive the front surface 830 of the thin film paper 820 to fold downward to form a bottom front folding edge 871, and the bottom front folding edge 871 covers the bottom rear folding edge 872, thereby completing the folding operation of the bottom front folding edge 871 of the thin film paper cigarette package 800 and also completing the folding of the bottom surface 870 of the thin film paper cigarette package 800.

[0102] As Figure 2 、 Figure 6 shown, on one side of the second folding station, an outer radial corner folder 415 is provided. In the axial direction, the number of the outer radial corner folders 415 is two, and they are fixedly installed on both axial sides of the packaging wheel 410 in one-to-one correspondence; in the radial direction, the outer radial corner folder 415 is installed on the outside of the packaging wheel 410, and the outer radial corner folder 415 can reciprocate radially along the packaging wheel 410 for folding the bottom folding corner 890 of the thin film paper cigarette package 800.

[0103] Such a setting is because: an outer radial corner folder 415 is provided at the second folding station, and the outer radial corner folder 415 reciprocates radially along the packaging wheel 410; when the bottom surface 870 of the thin film paper cigarette package 800 is folded and the thin film paper 820 rotates from the first folding station to the second folding station and stops with the packaging wheel 410, the folding operation of the bottom folding corner 890 of the thin film paper cigarette package 800 can be completed through the radial movement of the outer radial corner folder 415 and its folding effect on the thin film paper.

[0104] As Figure 2 、 Figure 6 shown, a lower end face shovel plate 416 is provided between the first folding station and the second folding station. In the axial direction, the number of the lower end face shovel plates 416 is two, and they are fixedly installed on both axial ends of the packaging wheel 410 in one-to-one correspondence; in the radial direction, the distance between the lower end face shovel plate 416 and the rotation axis of the packaging wheel 410 is equal to the distance between the inner package 810 and the rotation axis of the packaging wheel 410, and the lower end face shovel plate 416 can swing reciprocally around the rotation axis of the packaging wheel 410, so that the lower end face shovel plate 416 can approach or move away from the second folding station for folding the rear folding edge 842 of the thin film paper cigarette package 800.

[0105] This is set because: a lower-end shovel plate 416 is installed between the first folding station and the second folding station, and the lower-end shovel plate 416 is installed on the two end faces of the packaging wheel 410 in a reciprocating swingable manner; after the folding of the bottom folding corner 890 of the thin-film cigarette pack 800 is completed, the lower-end shovel plate 416 can be driven to rotate counterclockwise around the rotation axis of the packaging wheel 410, and the two sides of the back 850 of the thin-film paper 820 are driven by the lower-end shovel plate 416 to fold upward to form a rear folding edge 842, thereby completing the folding operation of the rear folding edge 842 of the thin-film paper 820.

[0106] As Figure 2 、 Figure 6 shown, an upper-end shovel plate 417 is provided between the second folding station and the first heat-sealing station. In the axial direction, the number of the upper-end shovel plates 417 is two, and they are fixedly installed at the two axial ends of the packaging wheel 410 in one-to-one correspondence; in the radial direction, the distance between the upper-end shovel plate 417 and the rotation axis of the packaging wheel 410 is equal to the distance between the inner package 810 and the rotation axis of the packaging wheel 410, and the upper-end shovel plate 417 can reciprocate around the rotation axis of the packaging wheel 410, so that the upper-end shovel plate 417 can approach or move away from the second folding station, and is used for folding the front folding edge 841 of the thin-film cigarette pack 800.

[0107] This is set because: an upper-end shovel plate 417 is installed between the second folding station and the first heat-sealing station, and the upper-end shovel plate 417 is installed on the two end faces of the packaging wheel 410 in a reciprocating swingable manner; after the folding of the rear folding edge 842 of the thin-film cigarette pack 800 is completed, the upper-end shovel plate 417 can be driven to rotate clockwise around the rotation axis of the packaging wheel 410, so that the upper-end shovel plate 417 drives the two sides of the front 830 of the thin-film paper 820 to fold downward to form a front folding edge 841, thereby completing the folding operation of the front folding edge 841 of the thin-film paper 820.

[0108] As Figure 1 、 Figure 2 、 Figure 6 shown, in the circumferential direction, the heat-sealing frame 420 is a U-shaped frame, the U-shaped frame straddles the packaging wheel 410, and the heat-sealing frame 420 is coaxially arranged with the packaging wheel 410 and can rotate relatively.

[0109] An axial heater 421 and a radial heater 422 are provided on the heat-sealing frame 420; in the axial direction, the number of the axial heaters 421 is two, and they are installed on the heat-sealing frames 420 on both sides of the packaging wheel 410 in one-to-one correspondence, and the axial heater 421 can reciprocate along the axial direction of the packaging wheel 410, so that the two axial heaters 421 can approach or move away from the thin-film cigarette pack 800, and are used for clamping and heat-sealing the two side faces 840 of the thin-film cigarette pack 800 between the first heat-sealing station and the second heat-sealing station.

[0110] In the radial direction, the radial heater 422 is installed on the heat-sealing frame 420 outside the packaging wheel 410, and the radial heater 422 can move radially along the packaging wheel 410, so that the radial heater 422 can approach or move away from the film cigarette pack 800, and is used for heat-sealing the bottom surface 870 of the film cigarette pack 800 between the first heat-sealing station and the second heat-sealing station.

[0111] Such a setting is because: in order to ensure the heat-sealing effect of the film 820 outside the inner pack 810, a certain heat-sealing time needs to be ensured. In this embodiment, a first heat-sealing station and a second heat-sealing station are provided in the circumferential direction of the packaging wheel 410, and a heat-sealing frame 420 capable of rotating relatively is installed on the packaging wheel 410. At the same time, an axial heater 421 capable of moving axially and a radial heater 422 capable of moving radially are installed on the heat-sealing frame 420; when the completely folded film 820 and the inner pack 810 rotate with the packaging wheel 410 to the first heat-sealing station and stop, the two axial heaters 421 will approach each other and abut against the side surface 840 of the film cigarette pack 800, and the radial heater 422 will approach the packaging wheel 410 and abut against the bottom surface 870 of the film cigarette pack 800; when the film cigarette pack 800 rotates between the first heat-sealing station and the second heat-sealing station, the two axial heaters 421 and the radial heater 422 respectively perform heat-sealing operations on the two side surfaces 840 and the bottom surface 870 of the film cigarette pack 800, thereby completing the first heat-sealing operation of the film cigarette pack 800, and releasing the film cigarette pack 800 at the second heat-sealing station.

[0112] Preferably, in the axial direction, the heat-sealing frame 420 is integrally Y-shaped, so that two radial heaters 422 and axial heaters 421 can be installed on the heat-sealing frame 420 in the circumferential direction, for improving the folding and heat-sealing efficiency of the film cigarette pack 800.

[0113] As Figure 1 、 Figure 2 shown, at the double-pack output station of the packaging wheel 410, there is a double-pack pushing rod 418. The number of the double-pack pushing rods 418 is equal to the number of the packaging wheels 410, and can reciprocate in the radial direction of the packaging wheel 410, and is used for pushing a plurality of juxtaposed film cigarette packs 800 rotated to the double-pack output station radially to the cigarette pack output unit 500.

[0114] Specifically, the packaging wheel 410 includes two coaxial and fixedly connected discs 419. An annular avoidance gap (not marked in the figure) is formed between the two discs 419. The radial cigarette packet bins 411 are circumferentially distributed on the discs 419, and the radial cigarette packet bins 411 of the two discs 419 are in the same position in the circumferential direction. The double-pack pusher rod 418 is fixedly arranged in the avoidance gap 140 and can reciprocate along the conveying direction (the radial direction of the packaging wheel 410 at the double-pack output station).

[0115] In a specific embodiment, as Figure 1 、 Figure 6 shown, the upper circumferential shovel plate 414 is an arc-shaped plate, and the upper circumferential shovel plate 414 extends from the first folding station to the double-pack output station along the circumferential direction of the packaging wheel 410, for pressing and fixing the front folding edge 871 and the rear folding edge 872 at the bottom end of the bottom surface 870 of the thin film cigarette packet 800. And a circumferential slot hole 431 matching with the radial heater 422 is arranged on the upper circumferential shovel plate 414, and the circumferential slot hole 431 extends along the circumferential direction of the packaging wheel 410, for avoiding the radial movement and circumferential movement of the radial heater 422, so that the radial heater 422 can continuously heat-seal the thin film cigarette packet 800 between the first heat-sealing station and the second heat-sealing station, effectively extending the heat-sealing time of the thin film cigarette packet 800 and ensuring the heat-sealing effect of the thin film cigarette packet 800.

[0116] In a specific embodiment, as Figure 6 shown, upper baffles 432 and lower baffles 433 are arranged along the circumferential direction at both axial ends of the packaging wheel 410. The positions of the upper baffles 432 and the lower baffles 433 are fixed, that is, the upper baffles 432 and the lower baffles 433 are installed on both end faces of the packaging wheel 410, and the upper baffles 432 and the lower baffles 433 are fixedly connected with the upper circumferential shovel plate 414, so that the upper baffles 432 and the lower baffles 433 can rotate relative to the packaging wheel 410. The upper baffles 432 and the lower baffles 433 are integrally arc-shaped and extend from the second folding station to the first heat-sealing station along the circumferential direction of the packaging wheel 410, and the radial distance between the upper baffles 432 and the lower baffles 433 is less than the height of the thin film cigarette packet 800, for pressing and fixing both ends of the side surface 840 of the thin film cigarette packet 800 and maintaining the folded state of the thin film 820.

[0117] Such a setting is because: after the folded thin-film cigarette pack 800 is transferred out from the second folding station, the front folding edge 841 pressed on the rear folding edge 842 will become loose, which is not conducive to subsequent heat-sealing operations. In this embodiment, upper baffles 432 and lower baffles 433 with fixed positions are installed on both end faces of the packaging wheel 410. The upper baffles 432 and lower baffles 433 extend from the second folding station to the first heat-sealing station along the circumferential direction, and the radial distance between the upper baffles 432 and the lower baffles 433 is smaller than the height of the thin-film cigarette pack 800. When the packaging wheel 410 rotates, the upper baffles 432 will press both sides of the bottom end of the thin-film cigarette pack 800, and the lower baffles 433 will press both sides of the top end of the thin-film cigarette pack 800, preventing the side 840 of the already folded and formed thin-film cigarette pack 800 from becoming loose when the thin-film cigarette pack 800 rotates.

[0118] In a specific embodiment, as Figure 4 、 Figure 5 shown, the inner pack input unit 100 includes at least two inner pack conveyor belts 110 arranged along the conveying direction, and two adjacent inner pack conveyor belts 110 are arranged in parallel in the direction perpendicular to the conveying direction, and lugs 120 for pushing the inner pack 810 to move along the conveying direction are arranged at intervals on the surface of the inner pack conveyor belt 110.

[0119] Such a setting is because: on the existing cigarette pack production line, when the upstream equipment outputs the inner packs 810, it outputs them in a double-path parallel form, but the thin-film cigarette packs 800 of the downstream equipment are input in a single-path form. Therefore, when transforming the existing cigarette pack production line, only the form of double-path input of inner packs and single-path output of cigarette packs can be adopted. In this embodiment, the inner pack input unit 100 includes two inner pack conveyor belts 110 arranged in parallel with a spacing of X, which can directly receive the two paths of inner packs 810 with a spacing of X output by the upstream equipment. At the same time, a plurality of lugs 120 are arranged at equal intervals on the surface of the inner pack conveyor belt 110. When the inner pack conveyor belt 110 rotates, the two inner packs 810 can be intermittently and synchronously conveyed to the inner pack distance increasing unit 200 through the pushing action of the lugs 120 on the inner packs 810.

[0120] Preferably, as Figure 4 、 Figure 5 shown, on both sides of the inner pack conveyor belt 110 in the direction perpendicular to the conveying direction, fixed baffles 130 are provided. The fixed baffles 130 are used to position the inner packs 810 in the direction perpendicular to the conveying direction, so that the lifted inner packs 810 can accurately enter the die box bin 220 of the inner pack distance increasing unit 200. At the same time, an avoidance gap 140 is formed between the inner pack conveyor belt 110 and each fixed baffle 130. The avoidance gap 140 is used to avoid the lifting of the lifting plate 610 of the inner pack lifting unit 600, so that the inner pack lifting unit 600 can lift the inner packs 810 on the inner pack conveyor belt 110 upward.

[0121] More preferably, a flange 150 is provided on one side of the fixed baffle 130 close to the inner bag conveyor belt 110 , and the flange 150 is spaced apart from the inner bag conveyor belt for positioning the inner bag 810 on the inner bag conveyor belt 110 .

[0122] In a specific embodiment, if Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the inner bag lifting unit 600 includes a lifting plate 610, an up-and-down swing connecting rod 620 and a driving motor 630, wherein the number of the lifting plates 610 is the same as the number of the avoidance gaps 140 of the inner bag input unit 100, and they are arranged one by one directly below the avoidance gaps 140; the number of the up-and-down swing connecting rods 620 is twice the number of the lifting plates 610, and the two up-and-down swing connecting rods 620 are arranged in parallel one above the other, the swinging ends of the up-and-down swing connecting rods 620 are rotatably connected to the lifting plate 610, and one of the up-and-down swing connecting rods 620 is The rotating end is rotatably connected to the frame (not shown in the figure), and the other up and down swing connecting rod 620 is transmission-connected to the power output shaft of the driving motor 630, thereby forming a parallelogram transmission mechanism, so that the up and down swing connecting rod 620 is driven to swing back and forth in the vertical plane through the rotation of the driving motor 630, and then the reciprocating swing of the up and down swing connecting rod 620 drives the lifting plate 610 to lift and reciprocate in the avoidance gap 140, thereby lifting the inner package 810 at a predetermined position on the inner package conveyor belt 110 upward to the mold box bin 220 of the inner package distance increasing unit 200.

[0123] In a specific embodiment, if Figure 1 , Figure 2 , Figure 7 As shown, the cigarette pack output unit 500 includes a cigarette pack conveyor belt 510 and a mold box 520. The cigarette pack conveyor belt 510 is arranged along the vertical conveying direction, and a plurality of mold boxes 520 are arranged on the cigarette pack conveyor belt 510 at equal intervals (the distance is Y, and is equal to the spacing between two packaging wheels 410). The mold box 520 is used to receive a plurality of film paper cigarette packs 800 input synchronously, and through the rotation of the cigarette pack conveyor belt 510, drive the film paper cigarette packs 800 to move in the vertical conveying direction; the intermittent stepping frequency of the cigarette pack conveyor belt 510 is N times the intermittent stepping frequency of the packaging wheel 410.

[0124] Such arrangement is because: the cigarette pack conveyor belt 510 is arranged along the vertical conveying direction, and the intermittent stepping frequency of the cigarette pack conveyor belt 510 is set to N times the intermittent stepping frequency of the packaging wheel 410; the N mold boxes 520 at the multi-pack input station on the cigarette pack conveyor belt 510 can be directly opposite to the N radial cigarette pack warehouses 411 at the double-pack output station on the packaging wheel 410, which are used to receive the N film paper cigarette packs 800 synchronously output by the double-pack output station.

[0125] Specifically, along the rotation direction of the cigarette packet conveyor belt 510, there are sequentially arranged a multi-pack input station, a rejection station, and a single-pack output station. Among them, the number of multi-pack input stations is equal to the number of packaging wheels 410 and inner-pack conveyor belts 110. Through the rotation of the cigarette packet conveyor belt 510, the thin-film paper cigarette packets 800 in the die box 520 are driven to pass through the multi-pack input station, the rejection station, and the single-pack output station in sequence, and the unqualified thin-film paper cigarette packets 800 will be pushed out of the die box 520 at the rejection station. At the same time, a cigarette packet pushing rod 530 is provided between the cigarette packet conveyor belt 510 and the packaging wheel 410. The cigarette packet pushing rod 530 can reciprocate intermittently along the conveying direction, and is used to push the thin-film paper cigarette packets 800 at the single-pack output station to the downstream trademark paper packaging equipment.

[0126] Preferably, N = 2.

[0127] In a specific embodiment, as Figure 4 、 Figure 5 shown, the inner-pack distance-increasing unit 200 includes a horizontal swing link 210, a die box bin 220, and a fixed frame 230. Among them, in the vertical conveying direction, the fixed frame 230 is fixedly arranged on both sides of the inner-pack input unit 100 and is located above the inner-pack input unit 100. Two horizontal swing links 210 are in a group. The swing end of each group of horizontal swing links 210 is rotatably connected to the top of the die box bin 220, and the rotating end of each group of horizontal swing links 210 is rotatably connected to the fixed frame 230 to form a parallelogram transmission mechanism in the horizontal plane. The die box bin 220 has a packet receiving station and a packet pushing station. The packet receiving station is directly above the downstream end of the inner-pack input unit 100, and the packet pushing station is located on the input side of the packaging wheel 410. The distance between the two packet pushing stations is greater than the distance between the two packet receiving stations, so as to drive the die box bin 220 to switch between the packet receiving station and the packet pushing station through the reciprocating swing of the horizontal swing link 210 in the horizontal plane, thereby increasing the distance between adjacent two inner packs 810 in the vertical conveying direction.

[0128] It should be noted that how to drive the horizontal swing link 210 to reciprocate intermittently is the prior art, such as servo motor drive and cam drive.

[0129] Preferably, when the number of inner-pack conveyor belts 110 of the inner-pack input unit 100 is three, in the vertical conveying direction, the packet receiving station of the die box bin 220 of the inner-pack distance-increasing unit 200 is arranged above the two inner-pack conveyor belts 110 on both sides, and the inner pack 810 on the middle inner-pack conveyor belt 110 does not move in the vertical conveying direction.

[0130] Specifically: At the bag receiving station, the center distance between the two mold box bins 220 is X. After receiving the inner bag 810, the two mold box bins 220 will transport the inner bag 810 towards the packaging wheel 410, and at the same time, the two mold box bins 220 will separate from each other; when the mold box bin 220 transports the inner bag 810 to the bag pushing station, the center distance between the two mold box bins 220 changes to a larger value Y, and when the mold box bin 220 returns to the bag receiving station, the center distance between the two mold box bins 220 will return to the value X.

[0131] As Figure 5 described, in the vertical conveying direction, the overall shape of the mold box bin 220 is a U shape with the opening facing downwards, and the two sides of the mold box bin 220 are provided with a first movable jaw 221 and a second movable jaw 222, and the tops of the first movable jaw 221 and the second movable jaw 222 are rotatably connected to the mold box bin 220, so that the bottom opening of the mold box bin 220 can be movably opened and closed. When the inner bag 810 is lifted by the lifting plate 610, the first movable jaw 221 and the second movable jaw 222 are in an open state. When the inner bag 810 completely enters the mold box bin 220, the first movable jaw 221 and the second movable jaw 222 will immediately close to clamp the inner bag 810.

[0132] It should be noted that: the rotation of the first movable jaw 221 and the second movable jaw 222 around the top is controllable, for example, driven by a servo motor.

[0133] In a specific embodiment, as Figure 1 、 Figure 2 、 Figure 4 shown, the inner bag pushing unit 700 is arranged upstream of the inner bag distance increasing unit 200 and is located above the inner bag input unit 100. The inner bag pushing unit 700 includes a bag pushing rod 710 and a bag pushing connecting rod 720, and the number of the bag pushing rods 710 is equal to the number of the packaging wheels 410. The bag pushing rod 710 is arranged above the inner bag input unit 100 and can reciprocate along the conveying direction of the inner bag 810 and can avoid the rising of the lifting plate 610 of the inner bag lifting unit 600. One end of the bag pushing connecting rod 720 is rotatably connected to the frame, and the other end is in transmission connection with the bag pushing rod 710 for driving the bag pushing rod 710 to reciprocate along the conveying direction of the inner bag 810.

[0134] Preferably, the inner bag pushing unit 700 further includes a cigarette pack positioning plate 730. The number of the cigarette pack positioning plates 730 is two, and they are respectively installed on both sides of the axial direction of the packaging wheel 410 and are located between the second heat sealing station and the double pack output station, for axially limiting the heat-sealed and formed thin film paper cigarette pack 800 during the rotation of the packaging wheel 410, so that the thin film paper cigarette pack 800 can be accurately pushed into the mold box 520 of the cigarette pack output unit 500.

[0135] In a specific embodiment, asFigure 1 , Figure 2 As shown in Figure 2 , in front of the radial cigarette packet bin 411 of the wrapping wheel 410 at the first folding station, that is, between the wrapping wheel 410 and the inner wrapping distance increasing unit 200, a thin film paper supply unit 300 is provided, and the thin film paper supply unit 300 can intermittently supply thin film paper 820 to the wrapping wheel 410.

[0136] Embodiment, a method for producing a thin film paper cigarette packet, the method comprising the following steps:

[0137] S10: Receive the inner wrapping 810 output by the upstream equipment.

[0138] Specifically, the two juxtaposed inner wrapping conveyor belts 110 of the inner wrapping input unit 100 receive two juxtaposed inner wrappings 810 output by the upstream equipment, and convey the two juxtaposed inner wrappings 810 to the inner wrapping distance increasing unit 200 along the conveying direction of the inner wrapping 810.

[0139] S20: Synchronously lift the inner wrappings 810 juxtaposed along the vertical conveying direction upward.

[0140] Specifically, under the jacking action of the lifting plate 610 of the inner wrapping lifting unit 600, the two inner wrappings 810 conveyed to a predetermined position on the inner wrapping conveyor belt 110 are lifted upward into the die box bin 220 of the inner wrapping distance increasing unit 200.

[0141] S30: Increase the distance between two adjacent inner wrappings 810.

[0142] Specifically, through the swinging of the horizontal swing link 210 of the inner wrapping distance increasing unit 200 to both sides, the inner wrappings in the two die box bins 220 are moved from the packet receiving station to the packet pushing station, so that the distance between the two inner wrappings 810 is increased from X to Y.

[0143] S40: Synchronously push the inner wrappings 810 into the radial cigarette packet bin 411 of the wrapping wheel 410 at the first folding station.

[0144] Specifically, through the horizontal movement of the packet pushing rod 710 of the inner wrapping pushing unit 700, the two inner wrappings 810 at the packet pushing station together with the thin film paper 820 are pushed into the radial cigarette packet bin 411 of the wrapping wheel 410 at the first folding station. During the pushing process, through the folding action of the radial cigarette packet bin 411 on the thin film paper 820, the folding of the front 830 and the back 850 of the thin film paper cigarette packet 800 can be directly completed.

[0145] S50: At the first folding station, first fold the top folding corner 880 of the thin film paper cigarette packet 800, and then fold the bottom rear folding edge 872 of the thin film paper cigarette packet 800.

[0146] Specifically, when the packaging wheel 410 is in a stationary state, first, by the clockwise rotation of the cam 430, the inner radial corner folder 412 at the first folding station is driven to move radially outward along the packaging wheel 410, thereby completing the folding of the top folding angle 880 of the thin-film cigarette pack 800. Then, the lower circumferential shovel plate 413 is controlled to rotate counterclockwise along the circumferential direction of the packaging wheel 410, and the rear surface 850 of the thin-film paper 820 will be folded upward by the lower circumferential shovel plate 413, thereby completing the folding of the rear folding edge 872 at the bottom of the thin-film cigarette pack 800.

[0147] S60: Rotate the thin-film cigarette pack 800 to the second folding station by the rotation of the packaging wheel 410, and fold the front folding edge 871 at the bottom of the thin-film cigarette pack 800 during the rotation.

[0148] Specifically, control the intermittent rotation of the packaging wheel 410 (the cam 430 rotates synchronously), that is, rotate the thin-film cigarette pack 800 at the first folding station counterclockwise to the second folding station by the packaging wheel 410. Due to the relative rotation between the packaging wheel 410 and the upper circumferential shovel plate 414, the upper circumferential shovel plate 414 will fold the front surface 830 of the thin-film paper 820 downward, forming the front folding edge 871 at the bottom and covering it on the rear folding edge 872 at the bottom, thereby completing the folding of the front folding edge 871 at the bottom of the thin-film cigarette pack 800, that is, completing the folding of the bottom surface 870 of the thin-film cigarette pack 800.

[0149] S70: At the second folding station, first fold the bottom folding angle 890 of the cigarette pack, and then fold the rear folding edge 842 and the front folding edge 841 of the cigarette pack successively.

[0150] Specifically, when the packaging wheel 410 is in a stationary state, first, by the clockwise rotation of the cam 430, the inner radial corner folder 412 is radially moved back to its original position, and then the outer radial corner folder 415 is controlled to move radially inward along the packaging wheel 410, thereby completing the folding and resetting of the bottom folding angle 890 of the thin-film cigarette pack 800. Subsequently, control the two lower end-face shovel plates 416 to swing and reset. The lower end-face shovel plates 416 will fold the two sides of the rear surface 850 of the thin-film paper 820 upward, thereby completing the folding of the rear folding edge 842. Finally, control the two upper end-face shovel plates 417 to swing clockwise. The upper end-face shovel plates 417 will fold the two sides of the front surface 830 of the thin-film paper 820 downward, thereby completing the folding of the front folding edge 841, and making the front folding edge 841 cover the rear folding edge 842.

[0151] S80: Drive the thin-film cigarette pack 800 to intermittently rotate between the first heat-sealing station, the second heat-sealing station and the double-pack output station by the rotation of the packaging wheel 410, and heat-seal the side surface 840 and the bottom surface 870 of the thin-film cigarette pack 800 between the first heat-sealing station and the second heat-sealing station.

[0152] Specifically, control the intermittent counterclockwise rotation of the packaging wheel 410 (the upper end face shovel plate 417 rotates synchronously with the packaging wheel 410 and resets). Under the limiting action of the upper circumferential shovel plate 414 on the bottom surface 870 of the thin-film cigarette pack 800, and under the limiting action of the upper baffle 432 and the lower baffle 433 on the side surface 840 of the thin-film cigarette pack 800, the thin-film cigarette pack 800 rotates from the second folding position to the first heat-sealing station along with the packaging wheel 410. At this time, the heat-sealing frame 420 is located at the first heat-sealing station. Control the radial heater 422 to move radially and abut against the bottom surface 870 of the thin-film cigarette pack 800, and control the axial heater 421 to move axially and abut against the side surface 840 of the thin-film cigarette pack 800. Heat-seal and shape the bottom surface 870 of the thin-film cigarette pack 800 through the radial heater 422, and perform heat-sealing on the two side surfaces 840 of the thin-film cigarette pack 800 through the axial heater 421. While the heat-sealing is being carried out, through the synchronous rotation of the packaging wheel 410 and the heat-sealing frame 420, rotate the thin-film cigarette pack 800 in the heat-sealed state from the first heat-sealing station to the second heat-sealing station, and then control the radial heater 422 and the axial heater 421 to move away from the thin-film cigarette pack 800, and the heat-sealing frame 420 returns to the first heat-sealing station.

[0153] S90: First, radially push out the thin-film cigarette pack 800 from the double-pack output station, then move the thin-film cigarette pack 800 along the vertical conveying direction, and finally convey the thin-film cigarette pack 800 one by one downstream to the downstream equipment at a fixed position along the conveying direction.

[0154] Specifically, through the intermittent rotation of the packaging wheel 410, first rotate the heat-sealed thin-film cigarette pack 800 from the second heat-sealing station to the double-pack output station, and then push the two thin-film cigarette packs 800 at the double-pack output station into the mold box 520 at the multi-pack input station on the cigarette pack conveyor belt 510 through the double-pack push rod 418. Then, through the rotation of the cigarette pack conveyor belt 510, the thin-film cigarette packs 800 in the mold box 520 pass through the rejection station and the single-pack output station in sequence, and are successively pushed out along the conveying direction by the cigarette pack push rod 530 at the single-pack output station.

[0155] Compared with the prior art, the present application has at least the following beneficial technical effects:

[0156] The present application improves the packaging speed from two directions:

[0157] One is by expanding the number of packaging routes, and simultaneously completing the transfer, folding, and heat-sealing of the thin-film cigarette packs in at least two adjacent routes, and finally outputting the packaged thin-film cigarette packs in the form of a single route, which can increase the folding and heat-sealing speed of the thin-film cigarette packs from the original 200 packs per minute to 400 packs per minute.

[0158] Second, by optimizing the folding process, the folding of the thin-film cigarette pack is completed with a compact folding action. A follow-up heater is set after complete folding, which can clamp the cigarette pack and follow one station step by step to extend the first heat-sealing time.

[0159] This application realizes that a packaging wheel completes the folding operation and heat-sealing operation of all edges of the thin-film cigarette pack. Compared with the existing thin-film paper folding process with two packaging wheels and the folding process combining one packaging wheel and a folding channel, the packaging process flow is shortened, making the equipment more concise and efficient.

[0160] This application completes the long-time clamping and heat-sealing of the thin-film cigarette pack through the follow-up heater of the packaging wheel, solves the problem of poor bonding caused by insufficient heat-sealing time of the existing thin-film cigarette pack, and greatly improves the packaging quality of the cigarette pack.

[0161] This application uses a two-line method for the transfer of the inner package and the folding and heat-sealing of the thin-film cigarette pack. While reducing the operating speeds of all mechanisms such as transmission, folding, and heat-sealing, it ensures the production efficiency of the entire equipment.

[0162] This application can realize the transformation of the double-line center distance of the inner package of the skeleton paper and complete the double-line packaging and single-line output of the thin-film cigarette pack, solving the connection problems with the upstream double-line skeleton paper packaging equipment and the downstream single-line trademark paper packaging equipment.

[0163] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A production device for thin-film cigarette packs, characterized in that, It includes an inner package input unit (100), an inner package spacing increasing unit (200), a thin film paper supply unit (300), a folding and heat-sealing unit (400), and a cigarette pack output unit (500) arranged in sequence along the conveying direction; The inner package input unit (100) can convey N inner packages (810) in the vertical conveying direction, and an inner package lifting unit (600) for lifting the inner packages (810) upward is provided below the inner package input unit (100); The inner package spacing increasing unit (200) is arranged above the inner package input unit (100) and is used to receive the lifted inner packages (810) and increase the spacing between adjacent two inner packages (810) in the vertical conveying direction; an inner package pushing unit (700) is provided on one side of the inner package spacing increasing unit (200), and the inner package pushing unit (700) is used to push the spaced inner packages (810) and the thin film paper (820) conveyed by the thin film paper supply unit (300) into the folding and heat-sealing unit (400); The folding and heat-sealing unit (400) can fold and heat-seal the thin film paper (820) on the outer side of the inner package (810) and output a thin film paper cigarette pack (800); The cigarette pack output unit (500) is arranged on one side of the folding and heat-sealing unit (400) along the vertical conveying direction and is used to receive N heat-sealed and formed thin film paper cigarette packs (800) simultaneously and output them one by one along the conveying direction; wherein, N is an integer greater than or equal to 2; The folding and heat-sealing unit (400) includes a packaging wheel (410) and a heat-sealing frame (420); A first folding station, a second folding station, a first heat-sealing station, and a second heat-sealing station are successively arranged along the rotation direction of the packaging wheel (410), and a plurality of radial cigarette pack bins (411) are circumferentially distributed on the packaging wheel (410); Inner radial corner folding devices (412) are provided on both axial sides of the radial cigarette pack bin (411), and the inner radial corner folding devices (412) can reciprocate in the radial direction of the packaging wheel (410) and are used to fold the top folding angle (880) of the thin film paper cigarette pack (800); A lower circumferential shoveling plate (413) is provided below the first folding station, and the lower circumferential shoveling plate (413) can reciprocate in the circumferential direction of the packaging wheel (410) and is used to fold the rear folding edge (872) of the bottom end of the thin film paper cigarette pack (800); An upper circumferential shoveling plate (414) is arranged along the circumferential direction of the packaging wheel (410) above the first folding station, and the upper circumferential shoveling plate (414) can rotate relative to the packaging wheel (410) and is used to fold the front folding edge (871) of the bottom end of the thin film paper cigarette pack (800); An outer radial corner folding device (415) is provided on one side of the second folding station, and the outer radial corner folding device (415) can reciprocate in the radial direction of the packaging wheel (410) and is used to fold the bottom folding angle (890) of the thin film paper cigarette pack (800); A lower-end face shovel plate (416) is provided between the first folding station and the second folding station. The lower-end face shovel plate (416) is arranged at both axial ends of the packaging wheel (410) and can approach or move away from the second folding station, and is used for folding the rear folding edge (842) of the thin-film cigarette pack (800). An upper-end face shovel plate (417) is provided between the second folding station and the first heat-sealing station. The upper-end face shovel plate (417) is arranged at both axial ends of the packaging wheel (410) and can approach or move away from the second folding station, and is used for folding the front folding edge (841) of the thin-film cigarette pack (800). The heat-sealing frame (420) is coaxially arranged with the packaging wheel (410) and can rotate relatively, and an axial heater (421) and a radial heater (422) are provided on the heat-sealing frame (420). The axial heater (421) is arranged on both axial sides of the packaging wheel (410) and can reciprocate axially along the packaging wheel (410), and is used for heat-sealing the two side faces (840) of the thin-film cigarette pack (800) between the first heat-sealing station and the second heat-sealing station. The radial heater (422) is arranged outside the packaging wheel (410) and can move radially along the packaging wheel (410), and is used for heat-sealing the bottom face (870) of the thin-film cigarette pack (800) between the first heat-sealing station and the second heat-sealing station.

2. The production device for a thin-film cigarette pack according to claim 1, wherein A first folding station, a second folding station, a first heat-sealing station, a second heat-sealing station and a double-pack output station are successively arranged along the rotation direction of the packaging wheel (410). A double-pack pushing rod (418) is provided at the double-pack output station. The double-pack pushing rod (418) can reciprocate radially along the packaging wheel (410), and is used for pushing the thin-film cigarette pack (800) rotated to the double-pack output station radially to the thin-film cigarette pack output unit (500).

3. The thin film cigarette pack production device according to claim 2, wherein, The upper circumferential shovel plate (414) extends from the first folding station to the double-pack output station along the circumferential direction of the packaging wheel (410), and is used for pressing and fixing the bottom face (870), and a circumferential slot hole (431) matched with the radial heater (422) is provided on the upper circumferential shovel plate (414).

4. A thin film cigarette pack production device according to claim 2, characterized in that, Upper baffles (432) and lower baffles (433) are provided at both axial ends of the packaging wheel (410). The upper baffles (432) and the lower baffles (433) extend from the second folding station to the first heat-sealing station along the circumferential direction, and the radial distance between the upper baffles (432) and the lower baffles (433) is smaller than the height of the thin-film cigarette pack (800), and is used for pressing and fixing the side faces (840) of the thin-film cigarette pack (800) during rotation.

5. A thin film cigarette pack production device according to claim 1, characterized in that, The inner package input unit (100) includes at least two inner package conveyor belts (110) arranged along the conveying direction. Adjacent two of the inner package conveyor belts (110) are arranged side by side in the direction perpendicular to the conveying direction, and lugs (120) for pushing the inner package (810) to move along the conveying direction are equidistantly arranged on the surface of the inner package conveyor belt (110).

6. The thin film cigarette pack production device according to claim 5, characterized in that, Fixed baffles (130) for positioning the inner package (810) in the direction perpendicular to the conveying direction are arranged on both sides of the inner package conveyor belt (110), and a clearance (140) for cooperating with the inner package lifting unit (60) is formed between the fixed baffle (130) and the inner package conveyor belt (110).

7. A production device for thin-film cigarette packs according to claim 6, characterized in that The inner package lifting unit (600) includes a lifting plate (610) and an upper and lower swing link (620). The lifting plate (610) is arranged directly below the clearance (140). The swing ends of two parallel upper and lower swing links (620) are rotatably connected to the lifting plate (610) to drive the lifting plate (610) to lift and lower through the reciprocating swing of the upper and lower swing link (620).

8. A thin film cigarette pack production device according to claim 2, characterized in that, The cigarette package output unit (500) includes a cigarette package conveyor belt (510) and a die box (520). The cigarette package conveyor belt (510) is arranged in the direction perpendicular to the conveying direction. A plurality of die boxes (520) are equidistantly arranged on the cigarette package conveyor belt (510), and the intermittent step frequency of the cigarette package conveyor belt (510) is N times that of the intermittent step frequency of the packaging wheel (410).

9. The thin film cigarette pack production device according to claim 1, characterized in that, The inner package spacing increasing unit (200) includes a horizontal swing link (210) and a die box bin (220). The die box bin (220) has a package receiving station and a package pushing station. The package receiving station is directly above the downstream end of the inner package input unit (100), and the package pushing station is located on the input side of the packaging wheel (410). The swing ends of two parallel horizontal swing links (210) are rotatably connected to the top of the die box bin (220) to drive the die box bin (220) to switch between the package receiving station and the package pushing station through the reciprocating swing of the horizontal swing link (210).

10. A production method for a thin-film cigarette pack, characterized in that, The method includes the following steps: S10: Receive the inner package (810) output by the upstream device; S20: Synchronously lift upward the inner packages (810) distributed side by side in the direction perpendicular to the conveying direction; S30: Increase the spacing between adjacent two of the inner packages (810); S40: Synchronously push the inner packages (810) into the radial cigarette package bin (411) of the packaging wheel (410) at the first folding station; S50: At the first folding station, first fold the top folding corner (880) of the thin film paper cigarette package (800), and then fold the bottom rear folding edge (872) of the thin film paper cigarette package (800); S60: Rotate the thin film paper cigarette package (800) to the second folding station through the rotation of the packaging wheel (410), and fold the bottom front folding edge (871) of the thin film paper cigarette package (800) during the rotation process; S70: At the second folding station, first fold the bottom folding corner (890) of the thin-film cigarette pack (800), and then fold the rear folding edge (842) and the front folding edge (841) of the thin-film cigarette pack (800) successively. S80: Drive the intermittent rotation of the thin-film cigarette pack (800) between the first heat-sealing station, the second heat-sealing station, and the double-pack output station by the rotation of the packaging wheel (410), and heat-seal the side surface (840) and the bottom surface (870) of the thin-film cigarette pack (800) between the first heat-sealing station and the second heat-sealing station. S90: First push out the thin-film cigarette pack (800) radially from the double-pack output station, then move the thin-film cigarette pack (800) in the vertical conveying direction, and finally convey the thin-film cigarette pack (800) one by one downstream along the conveying direction at a fixed position.

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