Cigarette case package drying equipment and cigarette case package drying method

Abstract

The invention relates to the technical field of tobacco packaging equipment manufacturing, and discloses cigarette case package drying equipment and a cigarette case package drying method. The cigarette case package drying equipment comprises a drying wheel unit, a cigarette packet push-out unit, a cigarette packet lifting unit and a secondary drying unit. In the cigarette case packaging and drying equipment, a drying wheel unit comprises a drying wheel hub, a first driving assembly and a plurality of mold boxes. The mold boxes are evenly distributed and connected along the outer circumference of the drying hub, the first driving assembly drives the drying hub to rotate, cigarette cases to be dried are placed in the mold boxes, the first heating pieces in the mold boxes preliminarily dry the cigarette cases, and batch continuous operation can be achieved. The cigarette packet push-out unit is arranged on the downstream of the drying wheel unit and pushes the cigarette packets from the mold box to the secondary drying unit; the cigarette packet lifting unit is arranged on the downstream of the secondary drying unit and pushes the cigarette packets to a second heating piece acting area of the secondary drying unit for secondary drying, efficient drying and high-quality forming can be both considered, and then the cigarette packet forming quality and the follow-up packaging stability are improved.

Description

Technical Field

[0001] This invention relates to the field of tobacco packaging equipment manufacturing technology, and in particular to a cigarette box packaging drying equipment and a method for drying cigarette box packaging. Background Technology

[0002] In the cigarette box packaging production process, the drying effect of the adhesive directly affects the forming quality and subsequent processing stability of the cigarette box. After the various paper materials of the cigarette box are bonded together with adhesive, a drying process is required to cure the adhesive, ensuring that the cigarette box structure is firm and the shape is regular.

[0003] Currently, there are some cigarette box packaging drying equipment. These devices use continuous drying equipment, but in pursuit of production efficiency, the residence time of cigarette boxes in the drying equipment is often compressed. The heating intensity of a single drying wheel is insufficient to meet the rapid curing requirements of high-viscosity adhesives, which in turn affects the molding firmness of the cigarette boxes and easily causes quality problems such as wrinkles on the surface of the cigarette boxes and curling of the edges and corners, increasing the scrap rate and also adversely affecting the smoothness of subsequent packaging processes.

[0004] Therefore, there is an urgent need for a cigarette pack drying equipment that can balance efficient drying with high-quality forming, thereby improving the forming quality of cigarette packs and the stability of subsequent packaging. Summary of the Invention

[0005] The purpose of this invention is to provide a cigarette box packaging drying device that can balance efficient drying and high-quality forming, thereby improving the forming quality of cigarette packs and the stability of subsequent packaging.

[0006] Based on the above concept, the technical solution adopted by this invention is as follows:

[0007] A cigarette box packaging drying device, comprising:

[0008] A drying wheel unit includes a drying wheel hub, a first drive assembly, and multiple molds. The multiple molds are evenly distributed along the outer circumference of the drying wheel hub and connected to the drying wheel hub. The first drive assembly is mounted on the drying wheel hub and is used to drive the drying wheel hub to rotate. The cigarette box to be dried is placed in the mold. The mold includes a first heating element for drying the cigarette box to be dried.

[0009] A cigarette pack ejection unit is located downstream of the drying wheel unit, and the output end of the cigarette pack ejection unit can abut against the cigarette box to be dried;

[0010] The cigarette pack lifting unit is located downstream of the cigarette pack ejection unit.

[0011] The secondary drying unit includes both the cigarette pack ejection unit and the cigarette pack lifting unit, which are located downstream of the drying wheel unit. The secondary drying unit includes a second heating element for secondary drying of the cigarette box to be dried. The cigarette pack ejection unit is used to push the cigarette box to be dried from the mold into the secondary drying unit, and the cigarette pack lifting unit is used to push the cigarette box to be dried into the working area of ​​the second heating element.

[0012] As an optional solution for the cigarette box packaging drying equipment, the secondary drying unit also includes pairs of components arranged opposite to each other:

[0013] First rack;

[0014] A first drive unit is mounted on the first frame;

[0015] A synchronous belt is installed on the first frame and connected to the output end of the first drive unit. The first drive unit is used to drive the synchronous belt to run. The second heating element is disposed between the inner wall of the first frame and the synchronous belt. The cigarette box to be dried can be placed between a pair of synchronous belts and can abut against the synchronous belts. The synchronous belt is used to drive the cigarette box to be dried to move along its running direction.

[0016] The transition mold assembly has an adjustment area distributed below the synchronous belt on the first frame. The transition mold assembly is placed in the adjustment area. The cigarette box to be dried can fall into the transition mold assembly after being pushed out by the cigarette pack ejection unit. The cigarette pack lifting unit is used to lift the cigarette box to be dried contained in the transition mold assembly.

[0017] As an optional solution for the cigarette box packaging drying equipment, the surface of the synchronous belt that contacts the cigarette box to be dried is provided with a textured anti-slip pattern.

[0018] As an optional solution for the cigarette box packaging drying equipment, the secondary drying unit also includes an adjustment component, which includes a clamping member and a first rotating screw. The clamping member is disposed on the outer periphery of the pair of first frames, and the first rotating screw is mounted on the clamping member. The first rotating screw is used to adjust the distance between the two first frames.

[0019] As an optional solution for the cigarette box packaging drying equipment, the first drive component includes:

[0020] First servo motor;

[0021] A drive wheel, which is connected to the output end of the first servo motor;

[0022] The driven wheel meshes with the driving wheel, and the outer diameter of the driven wheel is larger than that of the driving wheel. The drying hub is coaxially mounted on the driven wheel and can move synchronously with the driven wheel. The eccentricity between the driving wheel and the driven wheel is in the range of -0.05mm to 0.05mm.

[0023] As an optional solution for the cigarette box packaging drying equipment, the ratio of the outer diameter of the driven wheel to the outer diameter of the drying hub is 1:(0.8-1.2).

[0024] As an optional solution for this cigarette box packaging drying equipment, the mold includes:

[0025] The box body has a first receiving groove, the cigarette box to be dried is placed in the first receiving groove, and the first heating element is installed in the box body, with the extension direction of the first heating element being parallel to the cigarette box to be dried.

[0026] A first gasket is installed in the first receiving groove for positioning and clamping the cigarette box to be dried placed in the first receiving groove.

[0027] As an alternative to the cigarette box packaging drying equipment, a single box body has two first receiving slots spaced apart along its extension direction.

[0028] As an optional solution for the cigarette box packaging drying equipment, two cigarette boxes to be dried, placed inside the box body, can be pushed down to the secondary drying unit in a single package manner by the cigarette pack ejection unit. The operating frequency of the secondary drying unit is twice that of the drying wheel unit.

[0029] A method for using a cigarette box packaging drying device, comprising the following steps:

[0030] S1: Place the cigarette box to be dried into the mold box, turn on the drying wheel unit to dry the cigarette box once and drive the cigarette box to be dried to rotate around the drying wheel hub;

[0031] S2: When the cigarette box to be dried is directly below the secondary drying unit, open the cigarette pack ejection unit to push the cigarette box to be dried into the secondary drying unit;

[0032] S3: After the cigarette box to be dried is pushed down to the secondary drying unit, the cigarette pack lifting unit is activated to lift the cigarette box to be dried to the working area of ​​the second heating element, and the secondary drying unit is activated to perform secondary drying on the cigarette box.

[0033] The beneficial effects of this invention are as follows:

[0034] This invention proposes a cigarette box packaging drying device. The drying wheel unit includes a drying hub, a first drive assembly, and multiple molds. The multiple molds are evenly distributed along the outer circumference of the drying hub and connected to it. The drive assembly is mounted on the drying hub, and the first drive assembly drives the drying hub to rotate. The cigarette box to be dried is placed inside the mold. The mold includes a first heating element for drying the cigarette box. A cigarette pack ejection unit is located downstream of the drying wheel unit, and its output end can abut against the cigarette box to be dried. A cigarette pack lifting unit is located downstream of the cigarette pack ejection unit. Both the cigarette pack ejection unit and the cigarette pack lifting unit are mounted on a secondary drying unit, which is located downstream of the drying wheel unit. The secondary drying unit includes a second heating element for secondary drying of the cigarette box. The cigarette pack ejection unit pushes the cigarette box from the mold into the secondary drying unit, and the cigarette pack lifting unit pushes the cigarette box into the working area of ​​the second heating element. This cigarette pack drying equipment uses multiple molds in the drying wheel unit in conjunction with a first heating element to achieve initial batch drying of cigarette packs. The rotation of the drying wheel hub allows for continuous operation, improving drying efficiency. The cigarette pack ejection unit and lifting unit, in conjunction with the second heating element of the secondary drying unit, can perform secondary drying of the cigarette packs. This not only improves drying efficiency through continuous batch processing but also ensures that the cigarette packs are completely dried through secondary drying, reducing problems such as deformation and wrinkles caused by insufficient drying. This effectively improves the quality of cigarette pack forming, achieving a balance between efficient drying and high-quality forming, which helps ensure the stability of subsequent packaging processes and the overall quality of the product. Attached Figure Description

[0035] Figure 1 This is a first structural schematic diagram of the cigarette box packaging drying equipment provided in an embodiment of the present invention;

[0036] Figure 2 This is a first structural schematic diagram of the secondary drying unit provided in an embodiment of the present invention;

[0037] Figure 3 This is a first structural schematic diagram of the transition mold assembly provided in an embodiment of the present invention;

[0038] Figure 4 This is a second structural schematic diagram of the cigarette box packaging drying equipment provided in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the first structure of a mold box with only one receiving slot provided in an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the first structure of a mold box with two receiving slots provided in an embodiment of the present invention;

[0041] Figure 7 This is a first structural schematic diagram of the cigarette pack ejection unit provided in an embodiment of the present invention;

[0042] Figure 8 This is a first structural schematic diagram of the cigarette pack lifting unit provided in an embodiment of the present invention.

[0043] In the picture:

[0044] 1. Drying wheel unit; 11. Drying wheel hub; 12. First drive assembly; 121. First servo motor; 122. Drive wheel; 123. Driven wheel; 13. Mold box; 131. First heating element; 132. Box body; 133. First gasket; 14. Drive spindle; 15. Gear housing;

[0045] 2. Tobacco pack ejection unit; 22. Second servo motor; 23. First crank; 24. First rocker arm; 25. First slide bar; 26. First pusher;

[0046] 3. Cigarette pack lifting unit; 31. Third servo motor; 32. Second crank; 33. Second rocker arm; 34. First fixed base; 35. First swing arm; 36. Second fixed base; 37. First auxiliary rod; 38. First push plate;

[0047] 4. Secondary drying unit; 41. Second heating element; 42. First frame; 43. First drive element; 44. Synchronous belt; 45. Transition mold assembly; 451. Negative pressure air inlet; 452. Negative pressure air inlet; 453. First photoelectric sensor; 454. Transition mold body; 46. Adjustment assembly;

[0048] 5. Temperature control system; 51. Temperature sensor; 52. First temperature controller. Detailed Implementation

[0049] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0050] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0053] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0054] This embodiment provides a drying device for cigarette box packaging, such as... Figure 1 and Figure 5As shown, in this embodiment, the cigarette pack drying equipment includes a drying wheel unit 1, a cigarette pack ejection unit 2, a cigarette pack lifting unit 3, and a secondary drying unit 4. The drying wheel unit 1 includes a drying wheel hub 11, a first drive assembly 12, and multiple molds 13. The multiple molds 13 are evenly distributed along the outer circumference of the drying wheel hub 11 and connected to the drying wheel hub 11. The drive assembly is installed on the drying wheel hub 11, and the first drive assembly 12 is used to drive the drying wheel hub 11 to rotate. The cigarette pack to be dried is placed in the mold 13. The mold 13 includes a first heating element 131, which is used to dry the cigarette pack. The cigarette pack is ejected. Unit 2 is located downstream of drying wheel unit 1. The output end of cigarette pack ejection unit 2 can abut against the cigarette box to be dried. Cigarette pack lifting unit 3 is located downstream of cigarette pack ejection unit 2. Both cigarette pack ejection unit 2 and cigarette pack lifting unit 3 are installed on secondary drying unit 4. Secondary drying unit 4 is located downstream of drying wheel unit 1. Secondary drying unit 4 includes a second heating element 41. The second heating element 41 is used to perform secondary drying on the cigarette box to be dried. Cigarette pack ejection unit 2 is used to push the cigarette box to be dried from mold box 13 into secondary drying unit 4. Cigarette pack lifting unit 3 is used to push the cigarette box to be dried into the working area of ​​second heating element 41. This cigarette pack drying equipment uses multiple molds 13 in the drying wheel unit 1 in conjunction with the first heating element 131 to achieve batch initial drying of cigarette packs to be dried. The rotation of the drying wheel hub 11 allows for continuous operation, improving drying efficiency. The cigarette pack ejection unit 2 and the lifting unit, in conjunction with the second heating element 41 in the secondary drying unit 4, can perform secondary drying of the cigarette packs to be dried. This not only improves drying efficiency through continuous batch processing but also ensures uniform drying of all parts of the cigarette packs through secondary drying, reducing problems such as deformation and wrinkles caused by insufficient drying. This effectively improves the quality of cigarette pack forming, achieving a balance between efficient drying and high-quality forming, which is conducive to ensuring the stability of subsequent packaging processes and the overall quality of the product.

[0055] Specifically, such as Figure 2As shown, in this embodiment, the secondary drying unit 4 includes a pair of first frames 42, a first drive unit 43, and a synchronous belt 44 arranged opposite to each other. The first drive unit 43 is mounted on the first frame 42, and the synchronous belt 44 is mounted on the first frame 42. The synchronous belt 44 is connected to the output end of the first drive unit 43. The first drive unit 43 is used to drive the synchronous belt 44 to run. A second heating element 41 is disposed between the inner wall of the first frame 42 and the synchronous belt 44. The cigarette box to be dried can be placed between the pair of synchronous belts 44 and can abut against the synchronous belts 44. The synchronous belt 44 is used to drive the cigarette box to be dried to move along its running direction. The above arrangement enables the secondary drying unit 4 to... The synchronous belts 44 arranged in pairs form a conveying channel. While the first drive unit 43 drives the synchronous belts 44 to transport the cigarette boxes to be dried, the second heating element 41 located between the inner wall of the first frame 42 and the synchronous belts 44 heats the cigarette boxes to be dried, realizing secondary drying during the conveying process. The synchronous belts 44 can ensure the stable movement of the cigarette boxes to be dried. The paired arrangement can ensure that both sides of the cigarette boxes to be dried can be dried by the second heating element 41, making the cigarette boxes to be dried more evenly. The combination of heating and conveying can complete secondary drying in continuous operation, further improving drying efficiency and ensuring drying effect, thereby better guaranteeing the quality of cigarette pack forming.

[0056] Optionally, in this embodiment, the second heating element 41 is a plate-like structure, which can achieve uniform heating and drying of the cigarette box to be dried. The plate-like structure can be disposed between the synchronous belt 44 and the inner wall of the frame. In conjunction with the paired synchronous belts 44, both sides of the cigarette box to be dried can contact the heating element. During the conveying process of the cigarette box by the synchronous belt 44, the cigarette box can undergo secondary drying, ensuring stable movement of the cigarette box while making the drying more uniform. Combining heating and conveying improves drying efficiency and ensures the quality of the cigarette pack forming. In other embodiments, the second heating element 41 can also be a heating tube or a mesh heating structure, etc.

[0057] Optionally, such as Figure 2 As shown, in this embodiment, the first driving component 43 is a fourth servo motor, which can precisely control the running speed, start / stop time, and rotation angle of the synchronous belt 44, thereby achieving precise control of the conveying rhythm of the cigarette boxes to be dried in the secondary drying unit 4. The first driving component 43, being a fourth servo motor, can also flexibly adjust the conveying speed according to the drying requirements of the cigarette boxes to be dried, ensuring that the cigarette boxes have sufficient time to be dried by the second heating element 41, while ensuring rhythm matching with the preceding and following processes, avoiding accumulation of cigarette boxes or interruption of conveying, improving the stability and coordination of equipment operation, and further ensuring the uniformity of secondary drying and overall drying efficiency. In other embodiments, the first driving component 43 can also be a stepper motor structure or a hydraulic motor structure, etc. Preferably, in this embodiment, the speed deviation between the two fourth servo motors is <0.01%.

[0058] Preferably, in this embodiment, the secondary drying unit 4 includes a first fixing component, which includes a metal fixing bracket. The second heating element 41 is mounted on the inner wall of the first frame 42 via the metal fixing bracket, and the second heating element 41 maintains a 0.5mm gap with the synchronous belt 44. In other embodiments, the gap between the second heating element 41 and the synchronous belt 44 can also be 0.4mm, 0.6mm, or 0.7mm, etc., as long as it can dry the cigarette boxes to be dried on the synchronous belt 44, and there is no specific limitation.

[0059] Preferably, in this embodiment, the secondary drying unit 4 further includes a second temperature controller, which is electrically connected to the second heating element 41. The second temperature controller can adjust the heating temperature of the heating element according to the real-time temperature feedback signal.

[0060] Preferably, in this embodiment, the second temperature controller can set the heating temperature of the second heating element 41 to around 45°C. In other embodiments, the second temperature controller can set the heating temperature of the second heating element 41 to 43°C, 44°C, or 46°C, etc., as long as it is sufficient to dry the cigarette box to be dried, and no specific limitation is made.

[0061] Specifically, such as Figure 2-Figure 3 As shown, in this embodiment, an adjustment area is also distributed below the synchronous belt 44 on the first frame 42. After the dried cigarette box is pushed out by the cigarette pack ejection unit 2, it can fall into the adjustment area. The secondary drying unit 4 also includes a transition mold assembly 45, which is placed in the adjustment area. The transition mold assembly 45 includes a negative pressure air inlet 451, a negative pressure air inlet 452, a first photoelectric sensor 453, and a pair of oppositely arranged transition mold bodies 454. The negative pressure air inlet 452 is opened on the inner wall of the transition mold body 454. The negative pressure air inlet 451 is connected to the transition mold body 454, and the negative pressure air inlet 451 can move towards the transition mold assembly 45. Internal air intake: The first photoelectric sensor 453 is embedded in the inner wall of the transition mold box body 454. The first photoelectric sensor 453 can identify the placement of the cigarette boxes to be dried inside the transition mold box assembly 45. It can adjust and detect the posture and position of the cigarette boxes to be dried before entering the synchronous belt 44, ensuring that the cigarette boxes to be dried enter the secondary drying stage in the correct state, avoiding the impact of positional deviation on the subsequent drying effect, improving the stability of the cigarette boxes to be dried in the secondary drying unit 4, and also facilitating the timely detection and handling of abnormal placement of the cigarette boxes to be dried, reducing equipment failure and defective products, and further ensuring the quality of secondary drying and the efficiency of equipment operation.

[0062] Preferably, in this embodiment, the inner diameter of the hole into which the negative pressure air intake component 451 is embedded is 1 mm, and the vacuum degree of the negative pressure air intake component 451 is -0.06 MPa. In other embodiments, the inner diameter of the hole into which the negative pressure air intake component 451 is embedded can also be 0.5 mm or 1.5 mm, etc., and the vacuum degree of the negative pressure air intake component 451 can also be -0.05 MPa or -0.07 MPa, etc.

[0063] Preferably, in this embodiment, the surface of the synchronous belt 44 that contacts the cigarette box to be dried is provided with an uneven anti-slip texture, which can increase the friction between the synchronous belt 44 and the cigarette box to be dried, and prevent the cigarette box to be dried from sliding, deviating or even falling off during the conveying process of the synchronous belt 44 due to factors such as vibration, speed change or its own weight. This ensures that the cigarette box to be dried always maintains a stable conveying posture and position in the secondary drying unit 4, and ensures a stable relative position with the second heating element 41, so that the various parts of the cigarette box to be dried are heated more evenly. At the same time, it avoids problems such as conveying jams and accumulation caused by the deviating of the cigarette box to be dried, improves the smoothness of equipment operation, and further ensures the secondary drying effect and overall production efficiency.

[0064] Preferably, in this embodiment, the timing belt 44 is made of rubber, which, thanks to the good elasticity and flexibility of the rubber material, can fit tightly against the surface of the cigarette box to be dried. The textured surface further enhances friction, effectively preventing the cigarette box from sliding or shifting during transport, ensuring its stable passage through the working area of ​​the second heating element 41 in the secondary drying unit 4, and guaranteeing uniform drying. Simultaneously, the rubber material has a certain degree of wear resistance and temperature resistance, adapting to the working environment of the secondary drying stage. Its relatively soft texture reduces wear or indentations caused by contact with the cigarette box, ensuring both transport stability and drying effect, while also helping to protect the appearance of the cigarette box and improving overall molding quality. In other embodiments, the timing belt can also be made of polyurethane or polyvinyl chloride.

[0065] Preferably, in this embodiment, glass fibers or steel wires can be embedded in the rubber, which can significantly enhance the structural strength and tensile properties of the synchronous belt, effectively preventing deformation and breakage during long-term operation or load-bearing, and extending its service life. Embedding glass fibers or steel wires in the rubber can also improve the dimensional stability of the synchronous belt, ensuring precise motion accuracy during transmission and conveying, reducing conveying rhythm deviations caused by belt expansion and contraction, thereby ensuring stable movement and uniform heating of the cigarette boxes to be dried in the secondary drying unit. At the same time, this composite structure can also enhance the impact resistance and fatigue resistance of the synchronous belt, making it better adaptable to the continuous operating intensity of the equipment, further ensuring the overall stability and efficiency of the cigarette box packaging drying equipment.

[0066] Preferably, such as Figure 2As shown, in this embodiment, the secondary drying unit 4 further includes an adjustment component 46. The adjustment component 46 includes a clamping member and a first rotating screw. The clamping member is disposed on the outer periphery of a pair of first frames 42, and the first rotating screw is mounted on the clamping member. The first rotating screw is used to adjust the distance between the two first frames 42, thereby changing the width of the conveying channel formed by the synchronous belt 44. This allows for flexible adaptation to cigarette boxes of different sizes to be dried, enhancing the equipment's compatibility with diverse specifications of cigarette boxes to be dried. At the same time, it can also precisely adjust the fit between the synchronous belt 44 and the cigarette box to be dried according to the thickness of the cigarette box, ensuring stability during conveying and uniform heating during secondary drying. This reduces conveying failures or poor drying effects caused by size mismatch, improving the equipment's versatility and operational reliability.

[0067] Specifically, in this embodiment, the secondary drying unit 4 can simultaneously dry 75 packs of cigarette boxes awaiting drying. In other embodiments, the secondary drying unit 4 can also simultaneously dry 70 or 80 packs of cigarette boxes awaiting drying.

[0068] Preferably, such as Figure 4 As shown, in this embodiment, the first drive assembly 12 includes a first servo motor 121, a drive wheel 122, and a driven wheel 123. The drive wheel 122 is connected to the output end of the first servo motor 121, and the driven wheel 123 meshes with the drive wheel 122. The outer diameter of the driven wheel 123 is larger than the outer diameter of the drive wheel 122. The drying hub 11 is coaxially mounted on the driven wheel 123, and the drying hub 11 can move synchronously with the driven wheel 123. The eccentricity between the drive wheel 122 and the driven wheel 123 is in the range of -0.05mm to 0.05mm, utilizing gears. The transmission characteristics enable the drying hub 11 to rotate stably, and the small eccentricity between the driving wheel 122 and the driven wheel 123 ensures transmission accuracy. The servo motor can precisely control the speed and start / stop of the drying hub 11. The large outer diameter driven wheel 123 can reduce the rotation speed of the drying hub 11 to ensure that the cigarette boxes to be dried are fully dried. The small eccentricity reduces the shaking and deviation during the transmission process, ensuring the stability of the cigarette boxes to be dried in the mold box 13, improving the uniformity of the initial drying and the stability of the equipment operation, thereby ensuring the overall drying efficiency and the forming quality of the cigarette boxes to be dried.

[0069] Specifically, such as Figure 4As shown, in this embodiment, the drying wheel unit 1 further includes a drive shaft 14. One end of the drive shaft 14 is coaxially connected to the driven wheel 123, and the other end of the drive shaft 14 is connected to the drying wheel hub 11. This enables the power transmission from the driven wheel 123 to the drying wheel hub 11, allowing the driving force of the first drive assembly 12 to be precisely applied to the drying wheel hub 11 through the sequential transmission of the drive wheel 122, the driven wheel 123, and the drive shaft 14. This ensures that the drying wheel hub 11 rotates synchronously and stably with the driven wheel 123. The rigidly connected drive shaft 14 enhances the stability and precision of the transmission system, reduces losses and deviations during power transmission, and ensures the positional accuracy and motion consistency of multiple mold boxes 13 as they rotate with the drying wheel hub 11. This, in turn, ensures the stability and uniformity of the drying process of the cigarette boxes to be dried within the mold boxes 13, improves the initial drying effect, and enhances the overall operational reliability of the equipment.

[0070] Preferably, in this embodiment, the drying wheel unit 1 further includes a synchronous connector. The drying wheel hub 11 and the driven wheel 123 are connected by the synchronous connector, which enables them to rotate synchronously. This ensures that the power and motion state of the driven wheel 123 are accurately transmitted to the drying wheel hub 11, and that the rotation rhythm and angle of the drying wheel hub 11 are completely consistent with those of the driven wheel 123. This enhances the stability of the connection between the drying wheel hub 11 and the driven wheel 123 and the accuracy of the transmission, reduces the positional deviation of the mold box 13 caused by loose connection or transmission deviation, ensures the stability of the cigarette box to be dried in the mold box 13 during the drying process, improves the uniformity of the initial drying, and facilitates the installation, disassembly, and maintenance of the drying wheel hub 11 and the driven wheel 123 by the synchronous connector. This enhances the flexibility and maintainability of the equipment structure and ensures the continuous and stable operation of the drying wheel unit 1.

[0071] Optionally, in this embodiment, the ratio of the outer diameter of the driven wheel 123 to the outer diameter of the drying hub 11 is 1:(0.8-1.2). This allows the outer diameters of the driven wheel 123 and the drying hub 11 to be close, making their linear velocities consistent during synchronous rotation. This reduces transmission stress and motion deviation caused by excessive size differences, ensuring that the rotation of the driven wheel is transmitted more accurately to the drying hub 11. This reduces the shaking and positional shift of the drying hub 11 during rotation, thereby improving the overall transmission accuracy of the drying wheel unit 1. It also ensures the positional accuracy and motion stability of the mold box 13 as it rotates with the drying hub 11, making the posture of the cigarette box to be dried more stable within the mold box 13. This, in turn, ensures that the cigarette box to be dried is subjected to uniform force during the initial drying process within the mold box 13, avoiding positional shift of the cigarette box to be dried caused by improper speed matching, and improving the reliability of equipment operation and the drying quality of the cigarette box. Specifically, in this embodiment, the ratio of the outer diameter of the driven wheel 123 to the outer diameter of the drying hub 11 is 1:1. In other embodiments, the ratio of the outer diameter of the driven wheel 123 to the outer diameter of the drying hub 11 can also be 1:0.8, 1:0.9, 1:1.1 or 1:1.2, etc.

[0072] Preferably, such as Figure 4 As shown, in this embodiment, the drying wheel unit 1 also includes a gear housing 15, which covers the driving wheel 122 and the driven wheel 123. This housing provides enclosed protection for the transmission structure of the driving wheel 122 and the driven wheel 123, isolating the gear transmission components from the external environment. It effectively prevents dust, impurities, and other contaminants from entering the gear meshing area, avoiding foreign objects from affecting transmission accuracy or causing gear wear. It also prevents operators from contacting the operating gears, improving equipment operating safety. Furthermore, it reduces the noise diffusion generated by gear transmission, improves the working environment, and helps maintain the lubrication of the gear transmission system, extending the service life of components and ensuring the stability and durability of the drying wheel unit 1's transmission, thereby maintaining the overall drying efficiency of the equipment and the processing quality of the cigarette boxes to be dried.

[0073] Preferably, such as Figures 4-5 As shown, in this embodiment, the mold 13 includes a box body 132 and a first gasket 133. The box body 132 has a first receiving groove, and the cigarette box to be dried is placed in the first receiving groove. The first heating element 131 is installed in the box body 132, and the extension direction of the first heating element 131 is parallel to the cigarette box to be dried. The first gasket 133 is installed in the first receiving groove and is used to position and hold the cigarette box to be dried placed in the first receiving groove. The first gasket 133 can ensure that the cigarette box to be dried is stable in posture when the drying hub 11 rotates, avoids displacement that affects the drying effect, and also prevents the cigarette box to be dried from falling out of the mold 13. The parallel extending first heating element 131 can make the various parts of the cigarette box to be dried more evenly heated, improve the initial drying quality, reduce deformation and wrinkles caused by shaking or uneven heating of the cigarette box to be dried, provide a stable cigarette box to be dried for subsequent processes, and ensure the overall drying and forming effect.

[0074] Optionally, in this embodiment, the first heating element 131 is a rod structure, which allows it to be stably installed inside the box body 132 in a direction parallel to the cigarette box to be dried. It evenly releases heat to heat and dry the cigarette box. The rod structure facilitates installation and fitting with the box body 132, and the heat dissipation is more even, ensuring more uniform heating of all parts of the cigarette box and preventing localized overheating or insufficient drying. The rod structure is also robust and durable, reducing damage caused by long-term use, ensuring the stability and continuity of the initial drying process, and further improving the quality of the initial drying of the cigarette box. In other embodiments, the first heating element 131 can also be a flexible heating belt or a sheet structure, etc.

[0075] Optionally, in this embodiment, the temperature of the heating rod can be set to 40-100°C. Preferably, in this embodiment, the temperature of the heating rod is 45°C. In other embodiments, the temperature of the heating rod can also be 40°C, 60°C, 80°C, or 100°C, etc.

[0076] Optionally, such as Figure 5 As shown, in this embodiment, the box body 132 has only one first receiving slot, which allows a single mold box 13 to focus on supporting and positioning one cigarette box to be dried. This ensures that each cigarette box to be dried occupies a complete heating space independently during the drying process, maintains a stable heat exchange distance with the first heating element 131, and receives more uniform heating. At the same time, the first gasket 133 can more accurately fix a single cigarette box to be dried, reduce the difference in drying effect caused by multiple boxes sharing the same slot, ensure that the initial drying quality of each cigarette box to be dried is consistent, provide standardized semi-finished products for subsequent processes, and improve the overall production stability and finished product qualification rate.

[0077] Preferably, in this embodiment, the operating speed of both the drying wheel unit 1 and the secondary drying unit 4 is 400 packs / min. In this embodiment, the operating speed of both the drying wheel unit 1 and the secondary drying unit 4 can also be 350 packs / min or 450 packs / min, etc.

[0078] In some other embodiments, such as Figure 6 As shown, a single box body 132 has two first receiving slots spaced apart along its extension direction, which allows a single mold box 13 to simultaneously accommodate two cigarette boxes to be dried. During the rotation of the drying hub 11, the two cigarette boxes to be dried are simultaneously pre-dried, thereby further improving the efficiency of batch drying without increasing the total number of mold boxes 13 and the overall volume of the equipment.

[0079] Preferably, in this embodiment, two cigarette boxes to be dried, placed within a single box body 132, can be pushed down to the secondary drying unit 4 in a single package manner via the cigarette pack ejection unit 2. The operating frequency of the secondary drying unit 4 is twice that of the drying wheel unit 1, enabling orderly connection and rhythm matching of the cigarette boxes from initial drying to secondary drying. When two cigarette boxes to be dried from a single mold 13 enter the secondary drying unit 4 sequentially, the secondary drying unit 4 can synchronously receive and process them through higher frequency operation. This avoids congestion or posture confusion that may occur when multiple cigarette boxes are pushed down simultaneously, and ensures that the secondary drying stage can efficiently receive the cigarette boxes after initial drying. Without reducing the overall production rhythm, it ensures that each cigarette box receives sufficient secondary drying time, achieving smooth coordination between the preceding and following processes, and further improving the overall operating efficiency of the equipment and the stability of the drying quality of the cigarette boxes. In other embodiments, three or four first receiving slots may also be provided on a single box body 132.

[0080] Optionally, in this embodiment, the number of mold boxes 13 is set to 60-100, which can simultaneously carry more cigarette boxes to be dried during the rotation of the drying hub 11, and achieve batch synchronous drying in combination with the heating elements in each mold box 13. Specifically, in this embodiment, the number of mold boxes 13 is 80. In other embodiments, the number of mold boxes 13 can also be 60, 70, 90 or 100, etc.

[0081] Preferably, such as Figure 1 and Figure 7 As shown, in this embodiment, the cigarette pack ejection unit 2 includes a second servo motor 22, a first crank 23, a first rocker arm 24, a first slide bar 25, and a first pusher 26. The second servo motor 22 is mounted on the secondary drying unit 4. The first crank 23 is connected to the output end of the second servo motor 22. One end of the first rocker arm 24 along its extension direction is connected to the output end of the first crank 23, and the other end of the first rocker arm 24 along its extension direction is connected to the first slide bar 25. The output end of the first slide bar 25 is connected to the first pusher 26, which can abut against the cigarette pack to be dried. By driving the crank-rocker mechanism through the servo motor, the slide bar and pusher can be moved, which can accurately eject the cigarette pack to be dried in the mold box 13 to the secondary drying unit 4. The second servo motor 22 can accurately control the force, speed, and timing of the ejection action, and work with the crank-rocker mechanism to achieve stable linear pushing, ensuring the smooth transfer of the cigarette pack to be dried from the mold box 13 to the secondary drying unit 4, and avoiding the displacement or damage of the cigarette pack to be dried during the pushing process. In other embodiments, the cigarette pack ejection unit 2 may also be a claw-type ejection structure or a cam-linkage ejection structure, etc.

[0082] Preferably, in this embodiment, the cigarette pack ejection unit 2 and the drying wheel unit 1 move synchronously, with the phase difference controlled within ±1°. This ensures that when the mold box 13 of the drying wheel unit 1 rotates to the corresponding pushing position of the cigarette pack ejection unit 2, the first pusher 26 of the cigarette pack ejection unit 2 is precisely aligned with the cigarette box to be dried inside the mold box 13. This achieves a high degree of coordination between the two actions, thereby avoiding problems such as push misalignment, incomplete pushing of the cigarette box to be dried, or collision with the mold box 13 during pushing due to phase deviation. This ensures a smooth and accurate transfer of the cigarette box to be dried from the mold box 13 to the secondary drying unit 4, reducing posture deviation or damage of the cigarette box during the transfer process. It also ensures smooth connection between the preceding and following processes, improving the stability and reliability of the equipment operation and guaranteeing the continuity and consistency of the drying process of the cigarette box to be dried. This provides a strong guarantee for the uniformity of subsequent secondary drying and the quality of cigarette pack forming.

[0083] Preferably, such as Figure 1 and Figure 8As shown, in this embodiment, the cigarette pack lifting unit 3 includes a third servo motor 31, a second crank 32, a second rocker arm 33, a first fixed base 34, a first swing arm 35, a second fixed base 36, a first auxiliary rod 37, and a first push plate 38. The second crank 32 is connected to the output end of the third servo motor 31. One end of the second rocker arm 33 along its extension direction is rotatably connected to the output end of the second crank 32. The first fixed base 34 is mounted on the secondary drying unit 4 and is connected to the opposite end of the second rocker arm 33 along its extension direction. One end of the first swing arm 35 along its extension direction is connected to the first fixed base 34. The second fixed base 36 is mounted on the secondary drying unit 4 and is spaced apart directly above the first fixed base 34. One end of the first auxiliary rod 37 along its extension direction is connected to the second fixed base 36. The first auxiliary rod 37 and the first swing arm 35 are arranged in parallel. The opposite end of the first auxiliary rod 37 along its extension direction is rotatably connected to the first push plate 38. The connection between the first swing rod 35 and the first push plate 38 and the connection between the first auxiliary rod 37 and the first push plate 38 are spaced apart in the vertical direction. The top of the first push plate 38 can abut against the cigarette box to be dried. The second crank 32 and the second rocker arm 33 are driven by the third servo motor 31. With the cooperation of the first fixed seat 34, the first swing rod 35, the second fixed seat 36, and the first auxiliary rod 37, the first push plate 38 is moved, which can accurately push the cigarette box to be dried to the working area of ​​the second heating element 41. The third servo motor 31 can accurately control the speed, stroke and timing of the lifting action. With the help of the combination structure of the crank rocker arm, the swing rod and the auxiliary rod, the first push plate 38 can achieve a stable lifting trajectory, ensuring that the cigarette box to be dried is stable in posture during the lifting process and avoiding deviation or falling. The cigarette pack lifting unit 3 can also match the conveying rhythm of the synchronous belt 44, ensuring that the cigarette boxes to be dried can accurately enter the effective range of the second heating element 41, improving the uniformity and effectiveness of secondary drying. Furthermore, its compact overall structure and stable operation further enhance the smoothness and automation of continuous operation, ensuring the quality of the cigarette pack forming. In other embodiments, the cigarette pack lifting unit 3 can also be a structure of a pneumatic telescopic cylinder with a guide rail or a gear and rack transmission structure, etc.

[0084] Preferably, such as Figure 1 and Figure 4As shown, in this embodiment, the drying equipment for cigarette boxes to be dried also includes a temperature control system 5. The temperature control system 5 includes a temperature sensor 51 and a first temperature controller 52. The temperature sensor 51 is installed on the circumferential outer side of the drying wheel hub 11, with its monitoring end aligned with the mold box 13. The first temperature controller 52 is electrically connected to the temperature sensor 51 and to the first heating element 131. This enables precise control of the primary drying temperature of the drying wheel unit 1. The temperature control system 5 monitors the drying temperature of the cigarette boxes to be dried inside the mold box 13 in real time. By adjusting the output of the first heating element 131 in a timely manner through the first temperature controller 52, the primary drying temperature is ensured to remain stable within a suitable range. This avoids damage to the cigarette boxes due to excessively high temperatures or insufficient drying due to excessively low temperatures, ensuring the uniformity and reliability of the primary drying process. This, in turn, helps improve the overall drying quality in subsequent secondary drying. Preferably, in this embodiment, the temperature control system 5 can maintain the temperature of the mold box 13 at approximately 40-80°C to heat and dry the adhesive on the cigarette boxes to be dried.

[0085] Preferably, in this embodiment, the drying wheel unit 1 is positioned in front of and spaced apart from the secondary drying unit 4, enabling a compact layout of the various functional units and reducing the overall footprint of the equipment. The cigarette pack drying equipment integrates the drying wheel unit 1, the cigarette pack ejection unit 2, the cigarette pack lifting unit 3, and the secondary drying unit 4. These units are compactly connected and functionally coordinated, achieving efficient continuous batch drying and secondary drying operations while significantly reducing the overall space required for the equipment.

[0086] This embodiment also discloses a method for using a cigarette box packaging drying device, which is applied to the aforementioned cigarette box packaging drying device. Specifically, the method for using the cigarette box packaging drying device includes the following steps:

[0087] S1: Place the cigarette box to be dried into the mold box 13, turn on the drying wheel unit 1 to dry the cigarette box once and drive the cigarette box to be dried to rotate around the drying wheel hub 11.

[0088] S2: When the cigarette box to be dried is directly below the secondary drying unit 4, open the cigarette pack ejection unit 2 to push the cigarette box to be dried into the secondary drying unit 4;

[0089] S3: After the cigarette box to be dried is pushed down to the secondary drying unit 4, the cigarette pack lifting unit 3 is turned on to lift the cigarette box to be dried to the working area of ​​the second heating element 41, and the secondary drying unit 4 is turned on to perform secondary drying on the cigarette box to be dried.

[0090] The above-described method for using the cigarette box packaging drying equipment enables continuous and efficient drying of cigarette boxes. This method achieves orderly connection between primary and secondary drying through step-by-step operation. The batch rotation of drying wheel unit 1 improves drying efficiency, and secondary drying ensures uniform drying of cigarette boxes, reducing problems such as deformation and wrinkles caused by insufficient drying. At the same time, the rhythm of each step is matched to ensure the stability of continuous operation, effectively improve the quality of cigarette pack forming, and provide reliable guarantee for subsequent packaging processes, thus balancing drying efficiency and forming effect.

[0091] In summary, the cigarette box packaging drying equipment disclosed in this embodiment, through the cooperation of drying wheel unit 1 and secondary drying unit 4, shortens the drying time by 66% compared to natural drying and extends the drying time by 111% compared to FOCKE. The cigarette box packaging drying equipment disclosed in this embodiment, through the cooperation of drying wheel unit 1 and secondary drying unit 4, increases the glue curing rate of FOCKE by 35%. The cigarette box packaging drying equipment disclosed in this embodiment significantly reduces the surface temperature difference compared to FOCKE, and improves the uniformity of glue curing on the cigarette boxes to be dried. The cigarette box packaging drying equipment disclosed in this embodiment, through the cooperation of drying wheel unit 1 and secondary drying unit 4, can... The equipment improves its adaptability to adhesives and is fully compatible with existing cold glue processes without requiring modifications to the glue supply system. It also avoids the glue line strength defects of hot glue solutions, i.e., peel force ≥1.7N / mm. Compared to the FOCKE drying wheel cigarette pack jamming rate of 3 times / shift, the jamming rate of this embodiment is 0.5 times / shift, a reduction of 83% compared to the FOCKE drying wheel cigarette pack jamming rate. The cigarette box packaging drying equipment disclosed in this embodiment, through the setting of the synchronous belt 44, has a lifespan of >2000 hours compared to the traditional belt's 800-hour lifespan. The replacement cycle of the heating rod of the mold box 13 can be extended from one year to two years compared to the existing technology.

[0092] With the above settings, the drying time of the cigarette box to be dried in the drying wheel unit 1 is 12 seconds, and the drying time of the cigarette box to be dried in the secondary drying unit 4 is 11.3 seconds, which is greater than the theoretically required drying time of 22 seconds for the glue at 45℃. When the temperature of the drying wheel unit 1 is set to 45℃, the measured temperature distribution of the mold box 13 is 43.5-46.8℃ (standard deviation 2℃). When the temperature of the secondary drying unit 4 is set to 45℃, the surface temperature of the synchronous belt 44 is 44.2-45.5℃. Under these conditions, the peel strength of the glue (cold glue model: Henkel 8165) reaches 12.3N / 15mm after drying in 23.3 seconds, which meets the industry standard (≥10N / 15mm).

[0093] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A drying device for cigarette box packaging, characterized in that, include: A drying wheel unit (1) includes a drying wheel hub (11), a first drive assembly (12), and multiple mold boxes (13). The multiple mold boxes (13) are evenly distributed along the outer circumference of the drying wheel hub (11) and connected to the drying wheel hub (11). The first drive assembly (12) is mounted on the drying wheel hub (11) and is used to drive the drying wheel hub (11) to rotate. The cigarette box to be dried is placed in the mold box (13). The mold box (13) includes a first heating element (131) and is used to dry the cigarette box to be dried. A cigarette pack ejection unit (2) is located downstream of the drying wheel unit (1), and the output end of the cigarette pack ejection unit (2) can abut against the cigarette box to be dried. A cigarette pack lifting unit (3) is located downstream of the cigarette pack ejection unit (2). The secondary drying unit (4) is equipped with the cigarette pack ejection unit (2) and the cigarette pack lifting unit (3). The secondary drying unit (4) is located downstream of the drying wheel unit (1). The secondary drying unit (4) includes a second heating element (41). The second heating element (41) is used to perform secondary drying on the cigarette box to be dried. The cigarette pack ejection unit (2) is used to push the cigarette box to be dried from the mold box (13) into the secondary drying unit (4). The cigarette pack lifting unit (3) is used to push the cigarette box to be dried into the working area of ​​the second heating element (41).

2. The cigarette box packaging drying equipment according to claim 1, characterized in that, The secondary drying unit (4) further includes pairs of units arranged opposite to each other: First rack (42); A first drive unit (43) is mounted on the first frame (42); A synchronous belt (44) is mounted on the first frame (42). The synchronous belt (44) is connected to the output end of the first drive unit (43). The first drive unit (43) is used to drive the synchronous belt (44) to run. The second heating element (41) is disposed between the inner wall of the first frame (42) and the synchronous belt (44). The cigarette box to be dried can be placed between a pair of synchronous belts (44) and can abut against the synchronous belts (44). The synchronous belt (44) is used to drive the cigarette box to be dried to move along its running direction. The transition mold assembly has an adjustment area distributed below the synchronous belt (44) on the first frame (42). The transition mold assembly (45) is placed in the adjustment area. The cigarette box to be dried can fall into the transition mold assembly (45) after being pushed out by the cigarette pack ejection unit (2). The cigarette pack lifting unit (3) is used to lift the cigarette box to be dried contained in the transition mold assembly (45).

3. The cigarette box packaging drying equipment according to claim 2, characterized in that, The surface of the synchronous belt (44) that contacts the cigarette box to be dried is provided with a textured anti-slip pattern.

4. The cigarette box packaging drying equipment according to claim 2, characterized in that, The secondary drying unit (4) further includes an adjustment component (46), which includes a clamping member and a first rotating screw. The clamping member is disposed on the outer periphery of a pair of first frames (42), and the first rotating screw is mounted on the clamping member. The first rotating screw is used to adjust the distance between the two first frames (42).

5. The cigarette box packaging drying equipment according to any one of claims 1-4, characterized in that, The first driving component (12) includes: First servo motor (121); A drive wheel (122) is connected to the output end of the first servo motor (121); Driven wheel (123) meshes with driving wheel (122), the outer diameter of driven wheel (123) is larger than the outer diameter of driving wheel (122), drying hub (11) is coaxially mounted on driven wheel (123), drying hub (11) can move synchronously with driven wheel (123), the eccentricity between driving wheel (122) and driven wheel (123) is in the range of -0.05mm to 0.05mm.

6. The cigarette box packaging drying equipment according to claim 5, characterized in that, The ratio of the outer diameter of the driven wheel (123) to the outer diameter of the dry hub (11) is 1:(0.8-1.2).

7. The cigarette box packaging drying equipment according to any one of claims 1-4, characterized in that, The mold (13) includes: The box body (132) has a first receiving groove, the cigarette box to be dried is placed in the first receiving groove, and the first heating element (131) is installed in the box body (132). The extension direction of the first heating element (131) is parallel to the cigarette box to be dried. The first gasket (133) is installed in the first receiving groove and is used to position and hold the cigarette box to be dried placed in the first receiving groove.

8. The cigarette box packaging drying equipment according to claim 7, characterized in that, Each of the box bodies (132) has two first receiving slots spaced apart along its extension direction.

9. The cigarette box packaging drying equipment according to claim 8, characterized in that, Two cigarette boxes to be dried, placed inside a box body (132), can be pushed down to the secondary drying unit (4) in a single pack manner by the cigarette pack ejection unit (2). The operating frequency of the secondary drying unit (4) is twice that of the operating frequency of the drying wheel unit (1).

10. A drying method for cigarette box packaging, characterized in that, The method of using the cigarette box packaging drying equipment as described in any one of claims 1-9 includes the following steps: S1: Place the cigarette box to be dried in the mold box (13), turn on the drying wheel unit (1) to dry the cigarette box once and drive the cigarette box to be dried to rotate around the drying wheel hub (11); S2: When the cigarette box to be dried is directly below the secondary drying unit (4), the cigarette pack ejection unit (2) is opened to push the cigarette box to be dried into the secondary drying unit (4); S3: When the cigarette box to be dried is pushed down to the secondary drying unit (4), the cigarette pack lifting unit (3) is turned on to lift the cigarette box to be dried to the working area of ​​the second heating element (41), and the secondary drying unit (4) is turned on to perform secondary drying on the cigarette box to be dried.

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