A cigarette carton drying tunnel and method of use thereof

Abstract

The present application relates to cigarette packaging technical field, especially a kind of cigarette case drying channel and its using method.Cigarette case drying channel includes two parallelly arranged pressing plates, the pressing surface of the pressing plate is equipped with rectangular mounting slot, heating device is equipped in the mounting slot, the heating device includes sequentially attached metal sheet, electric heating plate and aramid honeycomb, the electric heating plate and aramid honeycomb are placed in the open end box, the metal sheet sealing cover is in the open end of the box, the metal sheet is connected temperature sensor, the electric heating plate and temperature sensor are electrically connected controller.The cigarette case drying channel provided by the present application is fast, fast, low energy consumption, high structural strength, and installation and maintenance are convenient and fast.

Description

Technical Field

[0001] This invention relates to the field of cigarette packaging technology, and in particular to a cigarette box drying channel and its usage method. Background Technology

[0002] During cigarette production, after the sides of the cigarette box are glued, they need to be heated in a drying channel to quickly dry and set the glued areas. The drying channel works by having soldering irons (consisting of soldering irons and heating wires inside) installed on the upper and lower sides of the channel. The inside of the soldering irons may or may not have a conveyor belt; the cigarette box is propelled forward by mechanical force. When the cigarette box enters the drying channel, the glued areas on both sides come into contact with the upper and lower soldering irons, and the glued areas dry and set rapidly under high temperature.

[0003] Patent application number 202021182104.6 discloses a heating device for the drying conveyor belt of cigarette packs at the No. 8 wheel outlet of a GD packaging machine. The device includes a conveyor belt, an upper channel support, a first pad, an upper soldering iron plate, a lower channel support, a second pad, a lower soldering iron plate, and a control module. The upper channel support is located above the conveyor belt, and its bottom has a first groove for engaging the first pad and the upper soldering iron plate. The upper soldering iron plate has a through-hole with an upper electric heating plate inside. The lower channel support is located below the conveyor belt, and its top has a second groove for engaging the second pad and the lower soldering iron plate. The lower soldering iron plate has a through-hole with a lower electric heating plate inside. The control module includes a controller, a temperature sensor, and a display screen. The temperature sensor is electrically connected to the upper soldering iron plate, the lower soldering iron plate, and the controller. The display screen is electrically connected to the controller. This device ensures that the adhesive on the sides of the cigarette pack is fully dried and cured, preventing the joint from opening. However, the above technical solution has the following problems:

[0004] 1. It adopts the heating structure of a traditional soldering iron, which is thick, slow in heating and consumes a lot of energy;

[0005] 2. The heating plate is in direct contact with the soldering iron and the channel support. The heat generated by the heating plate is conducted to the soldering iron and the channel support respectively, resulting in heat dispersion and further increasing energy consumption.

[0006] 3. The soldering iron and electric heating plate are fixed in the groove with screws. When disassembling and repairing, the screws need to be turned, which is inefficient. At the same time, small parts such as screws are easy to fall off and be lost, which not only increases the consumables, but also further reduces the efficiency.

[0007] 4. The soldering iron itself is thick and has slow heat dissipation. In addition, the channel support and the soldering iron are heated at the same time, so the overall heat dissipation efficiency of the drying channel is even lower. When the entire cigarette rolling equipment malfunctions, the cigarette boxes in the drying channel will remain, and the excessively high temperature for a long time will cause the cigarettes in the cigarette boxes to burn and deteriorate.

[0008] In summary, there is an urgent need to provide a cigarette box drying channel that features rapid heating, rapid heat dissipation, low energy consumption, and convenient and quick installation and maintenance. Summary of the Invention

[0009] To solve at least one of the above-mentioned technical problems, the present invention provides a cigarette box drying channel, including two parallel pressure plates arranged at the top and bottom. The pressing surface of the pressure plates is provided with a rectangular mounting groove. A heating device is provided in the mounting groove. The heating device includes a metal sheet, an electric heating plate, and an aramid honeycomb layer that are sequentially bonded together. The electric heating plate and the aramid honeycomb layer are placed in a box body with one open end. The metal sheet is sealed and covered by a temperature sensor. The electric heating plate and the temperature sensor are electrically connected to a controller.

[0010] Preferably, the box body is convex, including a rectangular box body and a first flange and a second flange arranged along its length. The mounting groove has an opening on one side along its length for the box body to be inserted. A baffle is provided at the opening. One end of the baffle is hinged to the pressure plate, and the other end is snapped into the pressure plate. The baffle and the mounting groove together form a first flange insertion hole. The other side of the mounting groove is provided with a second flange insertion hole and the temperature sensor.

[0011] Preferably, the free end of the baffle is provided with a snap-fit ​​portion, which is a horizontally arranged semi-cylindrical shape. Its rectangular surface is connected to the baffle, and a semi-circular first protrusion is provided in the circumferential direction. Multiple first protrusions are provided at equal intervals along the axial direction of the snap-fit ​​portion. The pressure plate is provided with a semi-cylindrical groove corresponding to the snap-fit ​​portion. A semi-circular second protrusion is provided in the circumferential direction of the groove. Multiple second protrusions are provided at equal intervals along the axial direction of the groove. In the snap-fit ​​state, the first protrusion and the second protrusion are staggered.

[0012] Preferably, the metal sheet is U-shaped, including a rectangular top plate and two side plates arranged along its length. A rectangular insertion part is provided at the bottom center of the side plate. The thickness of the insertion part is the same as the thickness of the side plate, and the length is less than the length of the side plate. The insertion part is symmetrically provided with an S-shaped first curved surface on both sides along the length direction. The box body is symmetrically provided with two connecting blocks on both sides along the length direction. The connecting blocks are provided with an S-shaped second curved surface that interlocks with the first curved surface.

[0013] Preferably, the housing is provided with a cooling mechanism. The aramid honeycomb is divided into staggered rows of air inlets and air outlets. The cooling mechanism includes a lower plate and an upper plate that hold the aramid honeycomb. The lower plate is provided with an air inlet channel communicating with the rows of air inlets and an air outlet channel communicating with the rows of air outlets. The upper plate is provided with a connecting groove that connects the rows of air inlets and the rows of air outlets. The air inlet channel and the air outlet channel are connected to a cold air circulation system.

[0014] Preferably, the air inlet channel and the air outlet channel are located at the bottom of the lower plate. The air inlet channel is connected one-to-one with the honeycomb holes on the air inlet hole row through a plurality of first through holes, and the air outlet channel is connected one-to-one with the honeycomb holes on the air outlet hole row through a plurality of second through holes. The connecting groove is laid on the top of the upper plate, with a third through hole at one end connected to the honeycomb holes on the air inlet hole row, and a fourth through hole at the other end connected to the honeycomb holes on the air outlet hole row.

[0015] Preferably, the upper end face of the lower plate is provided with a plurality of hexagonal prism-shaped third protrusions, and the lower end face of the upper plate is provided with a plurality of hexagonal prism-shaped fourth protrusions. The third protrusions and the fourth protrusions are sealed and inserted one-to-one with the honeycomb holes of the aramid honeycomb. The first through hole and the second through hole penetrate the third protrusion, and the third through hole and the fourth through hole penetrate the fourth protrusion.

[0016] Preferably, the air inlet channel and the air outlet channel extend along the width direction of the box body. One side of the box body is provided with an air inlet communicating with the air inlet channel, and the other side is provided with an air outlet communicating with the air outlet channel. The first flange is provided with an air inlet pipe on the outside and an air inlet cavity communicating with the air inlet on the inside. The second flange is provided with an air outlet pipe on the outside and an air outlet cavity communicating with the air outlet on the inside.

[0017] Preferably, the air inlet pipe is located at the center of the first flange and can extend horizontally out of the first flange insertion hole; the air outlet pipe is located at the center of the second flange and can extend horizontally out of the second flange insertion hole; both the air inlet cavity and the air outlet cavity are rectangular cavities; the air inlet has the same length as the air inlet cavity, faces the air inlet channel, and gradually tapers from both ends to the center; the height of both ends of the air inlet is equal to the height of the air inlet channel, and the height at the center is less than the height of the air inlet channel.

[0018] This invention provides a method for using a cigarette box drying channel, comprising the following steps:

[0019] Step S100. Installation: Open the baffle at the opening of the mounting slot, insert the heating device into the mounting slot, so that the second flange of the heating device is inserted into the second flange insertion hole, and then snap the baffle and the pressure plate together so that the first flange of the heating device is inserted into the first flange insertion hole, thus completing the installation and fixing of the heating device.

[0020] Step S200. Heating and drying: The electric heating plate is turned on by the controller, and the temperature sensor detects the temperature of the metal sheet. When the temperature reaches the set parameter, the cigarette box is conveyed. The cigarette box moves between two pressure plates. Each side wall to be dried is pressed against the pressing surface of a pressure plate. When passing through the heating area of ​​the heating device, the adhesive joint of the two side walls will be quickly dried and shaped.

[0021] Step S300. Heating device maintenance: When the heating device cannot heat normally due to a malfunction, open the baffle at the opening of the mounting slot, pull the heating device out of the mounting slot for replacement, apply a certain force to the metal plate of the malfunctioning heating device, pull the insert of the metal plate out of the connecting block of the box, and then repair and replace the malfunctioning part. After the replacement is completed, snap the metal plate into the box for later use.

[0022] Step S400. Cooling: When the production line stops due to a malfunction, the controller controls the electric heating plate to stop heating and simultaneously controls the cold air circulation system to blow cold air into the air inlet pipe. The cold air enters the air inlet chamber from the air inlet pipe, and then enters the multiple air inlet channels of the cooling mechanism from the air inlet. The cold air in each air inlet channel passes through the air inlet hole array, the connecting groove, the air outlet hole array and the air outlet channel in sequence before converging into the air outlet chamber. Finally, it flows back to the cold air circulation system through the air outlet pipe. The staggered air inlet hole array and air outlet hole array form a counter-current staggered cooling structure to quickly cool the heating device.

[0023] Compared with the prior art, the present invention has the following beneficial technical effects:

[0024] 1. The heating device uses a thin metal plate instead of a traditional soldering iron. The thin metal plate is thin, has high heating efficiency, and saves energy.

[0025] 2. The heating device adopts a heating structure in which a thin metal plate, an electric heating plate, and an aramid honeycomb are sequentially bonded together. The aramid honeycomb can not only provide support for the thin metal plate, increasing the overall structural strength and deformation resistance of the heating device, but also prevent the electric heating plate from directly contacting the pressure plate, blocking heat conduction and concentrating the heat of the electric heating plate to transfer to the thin metal plate, which greatly improves heating efficiency and saves energy.

[0026] 3. The thin metal sheet has a small thickness and heats up quickly, which can prevent the cigarettes inside the cigarette boxes from burning and deteriorating due to prolonged high temperatures when the production line stops due to malfunctions.

[0027] 4. The box body is convex in shape, and a baffle is set on one side of the mounting slot. One end of the baffle is hinged to the pressure plate, and the other end is snapped into the pressure plate, which can be opened and closed quickly. This allows the box body to be quickly inserted into or removed from the mounting slot from the baffle. When the box body is inserted into the mounting slot, the first flange and the second flange can be inserted into the first flange insertion hole and the second flange insertion hole of the mounting slot, thereby fixing the box body in the mounting slot. The installation, disassembly and maintenance are highly efficient, and there is no risk of losing parts.

[0028] 5. The snap-fit ​​connection between the baffle and the pressure plate adopts a snap-fit ​​structure with a semi-cylindrical snap-fit ​​part and a snap-fit ​​groove. The first semi-circular protrusion on the snap-fit ​​part can be snapped into the groove between two adjacent semi-circular second protrusions under external force. The second protrusion in the groove is snapped into the groove between two adjacent first protrusions on the snap-fit ​​part. This staggered snap-fit ​​structure further improves the connection stability.

[0029] 6. The metal sheet is U-shaped, which can be quickly inserted into the box body. During the insertion process, the insertion part on the two side plates is inserted between the two connecting blocks of the box body, fixing the metal sheet and the box body together. There is no need to use traditional screw connection. Installation and disassembly are convenient and quick. The first curved surface on the insertion part and the second curved surface on the connecting block cooperate to form an interlocking snap-fit ​​structure, which improves the connection stability.

[0030] 7. A cooling mechanism is installed inside the box, which can quickly cool down the heating device. The cooling mechanism and the aramid honeycomb together form an interlaced cooling circulation structure. The entry and exit of cold air form a counter-current state, which further improves the cooling efficiency.

[0031] 8. The first and second through holes in the air inlet and outlet channels, as well as the third and fourth through holes in the connecting slot, can limit the circulation speed of the cold air, increase the residence time of the cold air in the box, improve the cooling effect, and save energy; the connecting slot is set at the top of the upper plate, so that the cold air can directly contact the electric heating plate, further improving the cooling efficiency.

[0032] 9. The third protrusion on the lower plate and the fourth protrusion on the upper plate can not only play a positioning role and improve the structural stability of the aramid honeycomb, but also extend the length of the first through hole, the second through hole, the third through hole and the fourth through hole, further increasing the residence time of the cold air in the box, improving the cooling effect and saving energy.

[0033] 10. An air inlet cavity is provided in the first flange and an air outlet cavity is provided in the second flange, so that the first flange and the second flange become a link in the cold air circulation, which can make the structure of the heating device more compact; the air inlet on the box body is designed to be gradually narrowed from both ends to the center, which can form different degrees of shielding for each air inlet channel, balance the air volume at the center and the sides, and make the cold air enter each air inlet channel evenly.

[0034] In summary, the cigarette box drying channel provided by this invention features rapid heating, rapid heat dissipation, low energy consumption, high structural strength, and convenient and quick installation and maintenance. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the present invention;

[0036] Figure 2This is a schematic diagram of the heating device.

[0037] Figure 3 for Figure 2 Exploded view;

[0038] Figure 4 This is a schematic diagram of the pressure plate structure;

[0039] Figure 5 This is a schematic diagram of the snap-fit ​​part;

[0040] Figure 6 This is a schematic diagram of the card slot structure;

[0041] Figure 7 This is a schematic diagram showing the snap-fit ​​connection between the baffle and the pressure plate.

[0042] Figure 8 This is a schematic diagram showing the snap-fit ​​connection between the metal sheet and the box body.

[0043] Figure 9 This is a top view of an aramid honeycomb structure.

[0044] Figure 10 This is a bottom view of the lower flat panel;

[0045] Figure 11 This is a schematic diagram of the lower plate structure;

[0046] Figure 12 This is a top view of the upper flat panel;

[0047] Figure 13 This is a bottom view of the upper flat panel;

[0048] Figure 14 A schematic diagram of the cooling mechanism and the airflow within the aramid honeycomb structure;

[0049] Figure 15 This is a top view of the box.

[0050] Figure 16 for Figure 15 AA section view;

[0051] Figure 17 for Figure 15 BB cross-sectional view.

[0052] Explanation of reference numerals in the attached figures:

[0053] 1. Pressure plate; 11. Mounting groove; 111. First flange insertion hole; 112. Second flange insertion hole; 12. Baffle; 121. Snap-fit ​​part; 122. First protrusion; 13. Snap-fit ​​groove; 131. Second protrusion; 2. Heating device; 21. Metal sheet; 211. Top plate; 212. Side plate; 213. Snap-fit ​​part; 214. First curved surface. 22. Electric heating plate; 23. Aramid honeycomb; 231. Air inlet row; 232. Air outlet row; 24. Box body; 241. Box body; 2411. Air inlet; 2412. Air outlet; 242. First flange; 2421. Air inlet pipe; 2422. Air inlet cavity; 243. Second flange; 2431. Air outlet pipe; 2432. Air outlet cavity; 244. Connecting block; 245. Second curved surface; 25. Cooling mechanism; 251. Lower plate; 2511. Air inlet channel; 2512. Air outlet channel; 2513. First through hole; 2514. Second through hole; 2515. Third protrusion; 252. Upper plate; 2521. Connecting groove; 2522. Third through hole; 2523. Fourth through hole; 2524. Fourth protrusion; 3. Temperature sensor. Detailed Implementation

[0054] The specific embodiments of the present invention are described below with reference to the accompanying drawings and examples:

[0055] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should fall within the scope of the technical content disclosed in the present invention.

[0056] Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention. Example 1

[0057] Combined with appendix Figure 1-17This embodiment provides a cigarette box drying channel, including two parallel pressure plates 1. The pressing surface of the pressure plates 1 is provided with a rectangular mounting groove 11. A heating device 2 is provided in the mounting groove 11. The heating device 2 includes a metal sheet 21, an electric heating plate 22 and an aramid honeycomb 23 that are sequentially attached. The electric heating plate 22 and the aramid honeycomb 23 are placed in a box body 24 with one end open. The metal sheet 21 is sealed and covered by a temperature sensor 3. The electric heating plate 22 and the temperature sensor 3 are electrically connected to a controller.

[0058] In the above technical solution, the pressing surface of the pressure plate 1 is the surface that contacts the two side walls of the cigarette box. The two pressure plates 1 provide a certain degree of pressure to the cigarette box, so that each side wall of the cigarette box can be tightly bonded without hindering the movement of the cigarette box. A conveyor belt can be set between the two pressure plates 1 to transport the cigarette box, or the conveyor belt can be omitted, and the cigarette box can be directly pushed between the two pressure plates 1 by mechanical force. The above two methods are common means in the field and are applicable to the present invention. The metal sheet 21, the electric heating plate 22 and the aramid honeycomb 23 are sequentially bonded together, which can be done by adhesive bonding or by direct stacking and bonding. The thickness of the metal sheet 21 is preferably 1-5 mm. The function of the metal sheet 21 is heat conduction, directly contacting the two side walls of the cigarette box for heating and drying. Since the metal sheet 21 directly contacts the two side walls of the cigarette box, the pressing surfaces of the metal sheet 21 and the pressure plate 1 are on the same horizontal plane; this is common knowledge and will not be elaborated further. Because the thickness of the metal sheet 21 is much lower than that of a traditional soldering iron, the heating and heat dissipation efficiency of the metal sheet 21 is high. When the electric heating plate 22 heats, the metal sheet 21 can be heated quickly and evenly, saving energy. When the electric heating plate 22 stops heating, the metal sheet 21 can dissipate heat quickly, preventing the cigarettes inside the cigarette box from burning and deteriorating due to prolonged high temperatures when the production line stops due to malfunctions. The thickness of the electric heating plate 22 is preferably 1-3 mm. The function of the electric heating plate 22 is to provide heat to the metal sheet 21. The heating state of the electric heating plate 22 is remotely controlled by the controller. The aramid honeycomb 23 is made of para-aramid fiber, which has high support strength and good high temperature resistance. Its shrinkage rate is 0 at 150℃ and it can still maintain 70-80% of its original strength at 250℃. The aramid honeycomb 23 has two functions in this invention: first, it provides support for the metal plate 21, increases the overall thickness of the heating device 2, and increases its resistance to deformation; second, it blocks the conduction of heat, so that the heat of the electric heating plate 22 is concentrated and transferred to the metal plate 21, avoiding the conduction of heat to the pressure plate 1, which greatly improves the heating efficiency and saves energy. The wall thickness of the box body 24 is preferably 1-3mm. The box body 24 plays a protective and connecting role. It can protect the aramid honeycomb 23 and the electric heating plate 22, and cooperate with the metal plate 21 to make the metal plate 21, the electric heating plate 22 and the aramid honeycomb 23 fit together tightly.

[0059] In one specific technical solution, the box body 24 is convex, including a rectangular box body 241 and a first flange 242 and a second flange 243 arranged along its length direction. The mounting groove 11 has an opening on one side along its length direction for the box body 24 to be inserted. A baffle 12 is provided at the opening. One end of the baffle 12 is hinged to the pressure plate 1, and the other end is snapped into the pressure plate 1. The baffle 12 and the mounting groove 11 together form a first flange insertion hole 111. The other side of the mounting groove 11 is provided with a second flange insertion hole 112 and the temperature sensor 3.

[0060] In the above technical solution, one end of the baffle 12 is hinged to the pressure plate 1, and the other end is snapped into the pressure plate 1, allowing for quick opening and closing. This enables the box 24 to be quickly inserted into or removed from the mounting slot 11 from the baffle 12. The snapping can adopt any suitable snap-fit ​​connection structure in the prior art, including but not limited to hooks and buckles. The box 24 is convex in shape. When inserted into the mounting slot 11, its first flange 242 and second flange 243 can be inserted into the first flange insertion hole 111 and the second flange insertion hole 112 of the mounting slot 11, thereby fixing the box 24 in the mounting slot 11. The baffle 12 and the convex box 24 cooperate to enable the heating device 2 to be quickly installed and disassembled, which is more convenient and efficient than traditional screw fixing. The temperature sensor 3 is installed on one side of the mounting slot 11, and its detection end is attached to the metal thin plate 21.

[0061] In one specific technical solution, the free end of the baffle 12 is provided with a snap-fit ​​part 121. The snap-fit ​​part 121 is a horizontally arranged semi-cylindrical shape, and its rectangular surface is connected to the baffle 12. A semi-circular first protrusion 122 is provided in the circumferential direction. Multiple first protrusions 122 are provided at equal intervals along the axial direction of the snap-fit ​​part 121. The pressure plate 1 is provided with a semi-cylindrical slot 13 corresponding to the snap-fit ​​part 121. A semi-circular second protrusion 131 is provided in the circumferential direction of the slot 13. Multiple second protrusions 131 are provided at equal intervals along the axial direction of the slot 13. In the snap-fit ​​state, the first protrusion 122 and the second protrusion 131 are staggered.

[0062] In the above technical solution, the snap-fit ​​adopts a snap-fit ​​structure in which a semi-cylindrical snap-fit ​​part 121 and a snap-fit ​​groove 13 cooperate. The semi-circular first protrusion 122 on the snap-fit ​​part 121 can be snapped into the groove 13 between two adjacent semi-circular second protrusions 131 under external force. Similarly, the second protrusions 131 in the groove 13 snap into the snap-fit ​​part 121 between two adjacent first protrusions 122. This staggered snap-fit ​​structure further improves the connection stability.

[0063] In one specific technical solution, the metal sheet 21 is U-shaped, including a rectangular top plate 211 and two side plates 212 arranged along its length. A rectangular insertion part 213 is provided at the bottom center of the side plate 212. The thickness of the insertion part 213 is the same as the thickness of the side plate 212, and the length is less than the length of the side plate 212. The insertion part 213 is symmetrically provided with an S-shaped first curved surface 214 on both sides along the length direction. The box body 241 is symmetrically provided with two connecting blocks 244 on both sides along the length direction. The connecting blocks 244 are provided with an S-shaped second curved surface 245 that is inserted and matched with the first curved surface 214.

[0064] In the above technical solution, each part of the metal sheet 21 is preferably integrally formed. The metal sheet 21 is U-shaped and can be quickly inserted into the box body 241. During the insertion process, the insertion parts 213 on the two side plates 212 are inserted between the two connecting blocks 244 of the box body 241, fixing the metal sheet 21 and the box body 241 together. There is no need to use traditional screw connections, and the installation and disassembly are convenient and quick. The first curved surface 214 on the insertion part 213 and the second curved surface 245 on the connecting block 244 cooperate to form an interlocking snap-fit ​​structure, which improves the connection stability.

[0065] In one specific technical solution, the housing 24 is provided with a cooling mechanism 25. The aramid honeycomb 23 is divided into an alternating array of air inlets 231 and air outlets 232. The cooling mechanism 25 includes a lower plate 251 and an upper plate 252 that clamp the aramid honeycomb 23. The lower plate 251 is provided with an air inlet channel 2511 communicating with the air inlet array 231 and an air outlet channel 2512 communicating with the air outlet array 232. The upper plate 252 is provided with a connecting groove 2521 that connects the air inlet array 231 and the air outlet array 232. The air inlet channel 2511 and the air outlet channel 2512 are connected to an external cold air circulation system.

[0066] In the above technical solution, the air inlet row 231 and the air outlet row 232 refer to a row of honeycomb holes located in a straight line. All the honeycomb holes in the air inlet row 231 are connected to the air inlet channel 2511, and all the honeycomb holes in the air outlet row 232 are connected to the air outlet channel 2512. The air inlet row 231 and the air outlet row 232 are staggered, meaning that the aramid honeycomb 23 has an even number of rows of honeycomb holes. Two adjacent rows of honeycomb holes (i.e., the air inlet row 231 and the air outlet row 232) form a set of cold air circulation paths, such as... Figure 14As shown, the cold air circulation path of each group of cold air circulation channels is: cold air circulation system - air inlet channel 2511 - air inlet hole row 231 - connecting groove 2521 - air outlet hole row 232 - air outlet channel 2512 - cold air circulation system; since the air inlet hole row 231 and the air outlet hole row 232 are staggered, the cooling mechanism 25 and the aramid honeycomb 23 together form a staggered cooling circulation structure, and the entry and exit of cold air form a countercurrent state, which further improves the cooling efficiency.

[0067] The air inlet channel 2511 and the air outlet channel 2512 can be arranged on the lower plate 251 in any suitable manner, including but not limited to being arranged in the shape of a long groove on the upper end face of the lower plate 251. The opening of the air inlet channel 2511 is connected to the honeycomb holes of the air inlet hole row 231, and the opening of the air outlet channel 2512 is connected to the honeycomb holes of the air outlet hole row 232. The connecting groove 2521 can be arranged on the upper plate 252 in any suitable manner, including but not limited to being arranged in the shape of a long groove on the lower end face of the upper plate 252. One connecting groove 2521 spans a set of air inlet hole rows 231 and air outlet hole rows 232 in the width direction. The opening of the connecting groove 2521 is connected to the honeycomb holes of a set of air inlet hole rows 231 and air outlet hole rows 232 respectively.

[0068] In one specific technical solution, the air inlet channel 2511 and the air outlet channel 2512 are located at the bottom of the lower plate 251. The air inlet channel 2511 is connected one-to-one with the honeycomb holes on the air inlet hole row 231 through a plurality of first through holes 2513. The air outlet channel 2512 is connected one-to-one with the honeycomb holes on the air outlet hole row 232 through a plurality of second through holes 2514. The connecting groove 2521 is laid on the top of the upper plate 252, with a third through hole 2522 at one end connected to the honeycomb holes on the air inlet hole row 231, and a fourth through hole 2523 at the other end connected to the honeycomb holes on the air outlet hole row 232.

[0069] In the above technical solution, the air inlet channel 2511 and the air outlet channel 2512 are located at the bottom of the lower plate 251. They are connected to the honeycomb holes on the air inlet hole row 231 through the first through hole 2513 and to the honeycomb holes on the air outlet hole row 232 through the second through hole 2514. The first through hole 2513 and the second through hole 2514 can limit the circulation speed of the cold air, increase the residence time of the cold air in the box 24, improve the cooling effect, and save energy. The connecting groove 2521 is located at the top of the upper plate 252, so that the cold air can directly contact the electric heating plate 22, improve the cooling efficiency. The third through hole 2522 and the fourth through hole 2523 in the connecting groove 2521 can limit the circulation speed of the cold air, increase the residence time of the cold air in the box 24, improve the cooling effect, and save energy.

[0070] In one specific technical solution, the upper end face of the lower plate 251 is provided with a plurality of hexagonal prism-shaped third protrusions 2515, and the lower end face of the upper plate 252 is provided with a plurality of hexagonal prism-shaped fourth protrusions 2524. The third protrusions 2515 and the fourth protrusions 2524 are sealed and inserted one-to-one with the honeycomb holes of the aramid honeycomb 23. The first through hole 2513 and the second through hole 2514 penetrate the third protrusion 2515, and the third through hole 2522 and the fourth through hole 2523 penetrate the fourth protrusion 2524.

[0071] In the above technical solution, the height of the third protrusion 2515 and the fourth protrusion 2524 is preferably 1 / 10 to 1 / 20 of the height of the honeycomb hole. The third protrusion 2515 and the fourth protrusion 2524 can play a positioning role, improve the structural stability of the aramid honeycomb 23, and prevent the aramid honeycomb 23 from shaking during the cold air circulation. On the other hand, they can extend the length of the first through hole 2513, the second through hole 2514, the third through hole 2522 and the fourth through hole 2523, further increase the residence time of the cold air in the box 24, improve the cooling effect and save energy.

[0072] In one specific technical solution, the air inlet channel 2511 and the air outlet channel 2512 extend along the width direction of the box body 241 (i.e., perpendicular to the conveying direction of the cigarette box). The box body 241 has an air inlet 2411 communicating with the air inlet channel 2511 on one side and an air outlet 2412 communicating with the air outlet channel 2512 on the other side. The first flange 242 has an air inlet pipe 2421 on the outside and an air inlet cavity 2422 communicating with the air inlet 2411 on the inside. The second flange 243 has an air outlet pipe 2431 on the outside and an air outlet cavity 2432 communicating with the air outlet 2412 on the inside.

[0073] In the above technical solution, an air inlet cavity 2422 is provided in the first flange 242 and an air outlet cavity 2432 is provided in the second flange 243, so that the first flange 242 and the second flange 243 become a link in the cold air circulation, which makes the structure of the heating device 2 more compact.

[0074] In one specific technical solution, the air inlet pipe 2421 is located at the center of the first flange 242 and can extend horizontally to the first flange insertion hole 111. The air outlet pipe 2431 is located at the center of the second flange 243 and can extend horizontally to the second flange insertion hole 112. The air inlet cavity 2422 and the air outlet cavity 2432 are both rectangular cavities. The air inlet 2411 has the same length as the air inlet cavity 2422, faces the air inlet channel 2511, and gradually narrows from both ends to the center. The height of both ends of the air inlet 2411 is equal to the height of the air inlet channel 2511, and the height at the center is less than the height of the air inlet channel 2511.

[0075] In the above technical solution, the air inlet pipe 2421 is located at the center of the first flange 242, and the length of the air inlet 2411 is the same as that of the air inlet cavity 2422, that is, the air inlet pipe 2421 is directly opposite the center of the air inlet 2411. When cold air enters the air inlet cavity 2422 from the air inlet pipe 2421, the wind pressure at the center of the air inlet 2411 is the largest, and the cold air flow velocity from the center into the air inlet channel 2511 is the largest. The wind pressure on both sides is the smallest, and the cold air flow velocity from both sides into the air inlet channel 2511 is the smallest. By setting the air inlet 2411 to a structure that gradually narrows from both ends to the center, it can form different degrees of shielding for each air inlet channel 2511, balance the air volume at the center and on both sides, and make the cold air enter each air inlet channel 2511 evenly. The specific structure of the air inlet 2411 includes, but is not limited to, the structure with a V-shaped top and an inverted V-shaped bottom as in this invention.

[0076] The working principle and process of this embodiment are as follows: Open the baffle 12 at the opening of the mounting slot 11, insert the heating device 2 into the mounting slot 11, so that the second flange 243 of the heating device 2 is inserted into the second flange insertion hole 112, and then the baffle 12 is snapped into the pressure plate 1, so that the first flange 242 of the heating device 2 is inserted into the first flange insertion hole 111, thus completing the installation and fixing of the heating device 2; the controller controls the electric heating plate 22 to start heating, the temperature sensor 3 detects the temperature of the metal sheet 21, and when the temperature reaches the set parameter, the cigarette box is conveyed, and the cigarette box moves between the two pressure plates 1. Each side wall to be dried is tightly pressed against the pressing surface of one pressure plate 1. When passing through the heating area of ​​the heating device 2, the adhesive joint of the two side walls will be quickly dried and shaped; when the heating device 2 fails to heat normally due to a malfunction, open the baffle 12 at the opening of the mounting slot 11, pull the heating device 2 out of the mounting slot 11 for replacement, apply a certain force to the metal sheet 21 of the malfunctioning heating device 2, and press the metal sheet 21... The insertion part 213 is pulled out from the connecting block 244 of the box body 24, and then the faulty part is repaired and replaced. After the replacement is completed, the metal sheet 21 is snapped into the box body 24 for later use. When the production line stops due to a fault, the cigarette box remains in the drying channel. At this time, the controller controls the electric heating plate 22 to stop heating, and at the same time controls the cold air circulation system to blow cold air into the air inlet pipe 2421. The cold air enters the air inlet chamber 2422 from the air inlet pipe 2421, and then enters the cooling mechanism 25 through the air inlet 2411. Within the air inlet channel 2511, the cold air in each air inlet channel 2511 passes sequentially through the air inlet hole array 231, the connecting groove 2521, the air outlet hole array 232, and the air outlet channel 2512 before converging into the air outlet cavity 2432. Finally, it flows back to the cold air circulation system through the air outlet pipe 2431. The staggered air inlet hole array 231 and air outlet hole array 232 form a counter-current staggered cooling structure, which rapidly cools the heating device 2 and prevents the cigarette box in the drying channel from staying at high temperature for a long time, causing the cigarettes inside to deteriorate. Example 2

[0077] Combined with appendix Figure 1-17 This embodiment provides a method for using the drying channel of a cigarette box, including the following steps:

[0078] Step S100. Installation: Open the baffle 12 at the opening of the mounting slot 11, insert the heating device 2 into the mounting slot 11, so that the second flange 243 of the heating device 2 is inserted into the second flange insertion hole 112, and then the baffle 12 is snapped into the pressure plate 1, so that the first flange 242 of the heating device 2 is inserted into the first flange insertion hole 111, thus completing the installation and fixing of the heating device 2.

[0079] Step S200. Heating and drying: The electric heating plate 22 is turned on by the controller, the temperature sensor 3 detects the temperature of the metal sheet 21, and when the temperature reaches the set parameter, the cigarette box is conveyed. The cigarette box moves between the two pressure plates 1. Each side wall to be dried is pressed against the pressing surface of a pressure plate 1. When passing through the heating area of ​​the heating device 2, the adhesive joint of the two side walls will be quickly dried and shaped.

[0080] Step S300. Overhaul of heating device 2: When heating device 2 fails to heat normally due to malfunction, open the baffle 12 at the opening of the mounting slot 11, remove heating device 2 from the mounting slot 11 for replacement, apply a certain force to the metal plate 21 of the malfunctioning heating device 2, remove the insertion part 213 of the metal plate 21 from the connecting block 244 of the box 24, and then repair and replace the malfunctioning part. After replacement, snap the metal plate 21 to the box 24 for later use.

[0081] Step S400. Cooling: When the production line stops due to a malfunction, the controller controls the electric heating plate 22 to stop heating, and at the same time controls the cold air circulation system to blow cold air into the air inlet pipe 2421. The cold air enters the air inlet chamber 2422 from the air inlet pipe 2421, and then enters the multiple air inlet channels 2511 of the cooling mechanism 25 from the air inlet 2411. The cold air in each air inlet channel 2511 passes through the air inlet hole row 231, the connecting groove 2521, the air outlet hole row 232 and the air outlet channel 2512 in sequence and then gathers into the air outlet chamber 2432. Finally, it flows back to the cold air circulation system through the air outlet pipe 2431. The staggered air inlet hole row 231 and air outlet hole row 232 form a counter-current staggered cooling structure to quickly cool down the heating device 2.

[0082] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A cigarette box drying channel, comprising two parallel pressure plates (1) arranged vertically, wherein the pressing surface of the pressure plates (1) is provided with a rectangular mounting groove (11), and a heating device (2) is provided in the mounting groove (11), characterized in that, The heating device (2) includes a metal sheet (21), an electric heating plate (22) and an aramid honeycomb (23) that are sequentially bonded together. The electric heating plate (22) and the aramid honeycomb (23) are placed inside a box (24) with one end open. The metal sheet (21) is sealed and covered by a cover over the opening of the box (24). The metal sheet (21) is connected to a temperature sensor (3). The electric heating plate (22) and the temperature sensor (3) are electrically connected to a controller. The housing (24) is provided with a cooling mechanism (25). The aramid honeycomb (23) is divided into an alternating array of air inlets (231) and an array of air outlets (232). The cooling mechanism (25) includes a lower plate (251) and an upper plate (252) that clamp the aramid honeycomb (23). The lower plate (251) is provided with an air inlet channel (2511) that communicates with the array of air inlets (231) and an air outlet channel (2512) that communicates with the array of air outlets (232). The upper plate (252) is provided with a connecting groove (2521) that communicates with the array of air inlets (231) and the array of air outlets (232). The air inlet channel (2511) and the air outlet channel (2512) are connected to a cold air circulation system.

2. The cigarette box drying channel according to claim 1, characterized in that, The box body (24) is convex, including a rectangular box body (241) and a first flange (242) and a second flange (243) arranged along its length. The mounting groove (11) has an opening on one side along its length for the box body (24) to be inserted. A baffle (12) is provided at the opening. One end of the baffle (12) is hinged to the pressure plate (1), and the other end is snapped into the pressure plate (1). The baffle (12) and the mounting groove (11) together form a first flange insertion hole (111). The other side of the mounting groove (11) is provided with a second flange insertion hole (112) and the temperature sensor (3).

3. The cigarette box drying channel according to claim 2, characterized in that, The free end of the baffle (12) is provided with a snap-fit ​​part (121). The snap-fit ​​part (121) is a horizontally arranged semi-cylindrical shape. Its rectangular surface is connected to the baffle (12). A semi-circular first protrusion (122) is provided in the circumferential direction. Multiple first protrusions (122) are provided at equal intervals along the axial direction of the snap-fit ​​part (121). The pressure plate (1) is provided with a semi-cylindrical slot (13) corresponding to the snap-fit ​​part (121). A semi-circular second protrusion (131) is provided in the circumferential direction of the slot (13). Multiple second protrusions (131) are provided at equal intervals along the axial direction of the slot (13). In the snap-fit ​​state, the first protrusion (122) and the second protrusion (131) are staggered.

4. A cigarette box drying channel according to claim 3, characterized in that, The metal sheet (21) is U-shaped, including a rectangular top plate (211) and two side plates (212) arranged along its length. The side plate (212) has a rectangular insertion part (213) at the bottom center. The thickness of the insertion part (213) is the same as the thickness of the side plate (212), and its length is less than the length of the side plate (212). The insertion part (213) has an S-shaped first curved surface (214) symmetrically arranged on both sides along the length direction. The box body (241) has two connecting blocks (244) symmetrically arranged on both sides along the length direction. The connecting block (244) has an S-shaped second curved surface (245) that is inserted and matched with the first curved surface (214).

5. A cigarette box drying channel according to claim 4, characterized in that, The air inlet channel (2511) and air outlet channel (2512) are located at the bottom of the lower plate (251). The air inlet channel (2511) is connected one-to-one with the honeycomb holes on the air inlet hole row (231) through a number of first through holes (2513). The air outlet channel (2512) is connected one-to-one with the honeycomb holes on the air outlet hole row (232) through a number of second through holes (2514). The connecting groove (2521) is laid on the top of the upper plate (252). One end is provided with a third through hole (2522) that communicates with the honeycomb holes on the air inlet hole row (231), and the other end is provided with a fourth through hole (2523) that communicates with the honeycomb holes on the air outlet hole row (232).

6. A cigarette box drying channel according to claim 5, characterized in that, The upper surface of the lower plate (251) is provided with a plurality of hexagonal prism-shaped third protrusions (2515), and the lower surface of the upper plate (252) is provided with a plurality of hexagonal prism-shaped fourth protrusions (2524). The third protrusions (2515) and the fourth protrusions (2524) are sealed and inserted one-to-one with the honeycomb holes of the aramid honeycomb (23). The first through hole (2513) and the second through hole (2514) penetrate the third protrusion (2515), and the third through hole (2522) and the fourth through hole (2523) penetrate the fourth protrusion (2524).

7. A cigarette box drying channel according to claim 6, characterized in that, The air inlet channel (2511) and air outlet channel (2512) extend along the width direction of the box body (241). The box body (241) has an air inlet (2411) on one side that communicates with the air inlet channel (2511) and an air outlet (2412) on the other side that communicates with the air outlet channel (2512). The first flange (242) has an air inlet pipe (2421) on the outside and an air inlet cavity (2422) that communicates with the air inlet (2411) on the inside. The second flange (243) has an air outlet pipe (2431) on the outside and an air outlet cavity (2432) that communicates with the air outlet (2412) on the inside.

8. A cigarette box drying channel according to claim 7, characterized in that, The air inlet pipe (2421) is located at the center of the first flange (242) and can extend horizontally to the first flange insertion hole (111). The air outlet pipe (2431) is located at the center of the second flange (243) and can extend horizontally to the second flange insertion hole (112). The air inlet cavity (2422) and the air outlet cavity (2432) are both rectangular cavities. The length of the air inlet (2411) is the same as that of the air inlet cavity (2422), facing the air inlet channel (2511) and gradually narrowing from both ends to the center. The height of the two ends of the air inlet (2411) is equal to the height of the air inlet channel (2511), and the height at the center is less than the height of the air inlet channel (2511).

9. A method of using a cigarette box drying channel according to claim 8, characterized in that, Includes the following steps: Step S100. Installation: Open the baffle (12) at the opening of the mounting slot (11), insert the heating device (2) into the mounting slot (11), so that the second flange (243) of the heating device (2) is inserted into the second flange insertion hole (112), and then the baffle (12) is snapped into the pressure plate (1), so that the first flange (242) of the heating device (2) is inserted into the first flange insertion hole (111), thus completing the installation and fixing of the heating device (2); Step S200. Heating and drying: The electric heating plate (22) is turned on by the controller, and the temperature sensor (3) detects the temperature of the metal sheet (21). When the temperature reaches the set parameter, the cigarette box is conveyed. The cigarette box moves between two pressure plates (1). Each side wall to be dried is pressed against the pressing surface of a pressure plate (1). When passing through the heating area of ​​the heating device (2), the adhesive joint of the two side walls will be quickly dried and shaped. Step S300. Repair of heating device (2): When the heating device (2) cannot heat normally due to a fault, open the baffle (12) at the opening of the mounting slot (11), remove the heating device (2) from the mounting slot (11) for replacement, apply a certain force to the metal plate (21) of the faulty heating device (2), remove the plug part (213) of the metal plate (21) from the connecting block (244) of the box (24), and then repair and replace the faulty part. After the replacement is completed, snap the metal plate (21) to the box (24) for later use. Step S400. Cooling: When the production line stops due to a fault, the controller controls the electric heating plate (22) to stop heating, and at the same time controls the cold air circulation system to blow cold air into the air inlet pipe (2421). The cold air enters the air inlet cavity (2422) from the air inlet pipe (2421), and then enters the multiple air inlet channels (2511) of the cooling mechanism (25) from the air inlet (2411). The cold air in each air inlet channel (2511) passes through the air inlet hole row (231), the connecting groove (2521), the air outlet row (232) and the air outlet channel (2512) in sequence and then gathers into the air outlet cavity (2432). Finally, it flows back to the cold air circulation system through the air outlet pipe (2431). The staggered air inlet hole row (231) and air outlet row (232) form a counter-staggered cooling structure to quickly cool the heating device (2).

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