A rapid drying device for carton printing

Abstract

The utility model provides a kind of for carton printing's quick drying device, by the carton blank of printing completion to be dried is installed in the U-shaped groove in turn, and then by the transmission of conveying belt, large quantities of carton blank can be sent into drying cabinet in turn and dry, to realize the drying treatment of carton blank drying large quantities, automation, satisfy the drying demand when large-scale production, help to improve the drying efficiency and economic benefits when carton processing.Meanwhile, by microwave generator emits microwave to penetrate carton blank inside, promote the moisture inside carton blank to spread to surface rapidly and evaporate rapidly, accelerate the solidification and adhesion of printing layer ink, also set up hot air blower hot air blower by the moisture of carton blank on the conveying belt from drying cabinet inside two sides to middle evaporates hot air, directly act on carton surface, moisture by microwave to push to the surface of carton blank and dry solidification to the printing layer of carton surface, and then significantly accelerate the rate of drying.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box processing technology, and in particular to a rapid drying device for cardboard box printing. Background Technology

[0002] Carton printing involves printing ink patterns to present product characteristics, information, brand logos, or creative designs on the carton, which can enhance the recognizability of the carton and reflect its specific purpose.

[0003] During the carton production process, after the produced cardboard is assembled into carton blanks, patterns or markings are usually printed on the outer surface of the carton blanks. In order to ensure the adhesion of the printed layer to the surface of the carton blanks and to improve the compression resistance of the carton blanks when folded into cartons, the printed carton blanks need to be dried after printing. This process evaporates the moisture inside and outside the carton blanks and allows the printed layer to adhere firmly to the surface of the carton blanks.

[0004] However, some existing drying equipment often uses a single drying method to dry carton blanks. This process is time-consuming and energy-intensive, frequently resulting in incomplete drying of the carton blanks, leading to residual moisture, and incomplete drying of the printed layer, causing the printed layer to peel off, thus affecting production quality. This is especially true for materials like stone paper cartons, which have poor ink penetration; the long drying time and high energy costs result from this single method. Furthermore, due to the current high market demand for carton packaging and the need to improve production efficiency, equipment capable of only drying small batches of printed carton blanks is insufficient to meet the growing production demands. Improving the efficiency and effectiveness of large-scale drying is therefore imperative.

[0005] Therefore, it is necessary to provide a rapid drying device for carton printing that can automate large-scale drying and has high drying efficiency. Utility Model Content

[0006] To address the low efficiency of large-scale drying of cardboard boxes in existing technologies, this invention provides a rapid drying device for cardboard box printing, which improves opening efficiency and safety.

[0007] A rapid drying device for cardboard box printing includes a conveyor frame and a drying chamber fixedly connected to the top of the conveyor frame. The conveyor frame has a conveyor belt and a drive mechanism for driving the conveyor belt. Several fixed frames are fixedly arranged along the conveying direction on the conveyor surface of the conveyor belt. The fixed frames are evenly spaced, and their surfaces are coated with polytetrafluoroethylene (PTFE). Each fixed frame includes a mesh and an L-shaped bracket. The side of the mesh near one end of the conveyor belt is fixedly connected to one end of the L-shaped bracket, and the L-shaped bracket... A U-shaped groove is formed between the partitions to accommodate and fix the cardboard blanks; the drying chamber has an inlet and an outlet at both ends along the conveying direction; several microwave power supply ports are arranged in a matrix on the top inner side of the drying chamber, and each microwave power supply port is equipped with a microwave generator; several hot air blowers are equidistantly arranged on the left and right sides along the conveying direction inside the drying chamber, and the hot air blowers on the left and right sides are symmetrically arranged; several heat exhaust ports are opened on the top of the drying chamber to discharge the hot and humid gas inside the drying chamber, and each heat exhaust port is equipped with an exhaust pipe.

[0008] Furthermore, the mesh includes a rectangular outer frame, and the rectangular outer frame is provided with a plurality of connecting strips.

[0009] Furthermore, the drying chamber is equipped with a temperature and humidity sensor for detecting the temperature and humidity inside the drying chamber.

[0010] Furthermore, both the inlet and outlet are equipped with microwave shielding curtains to reduce microwave leakage inside the drying chamber.

[0011] Furthermore, an exhaust fan is provided on the top of the drying chamber, and the exhaust fan is connected to the exhaust pipe.

[0012] Furthermore, the exhaust pipe includes an inner pipe body and an outer pipe body sleeved on the outer pipe body, and an insulation layer is provided between the inner pipe body and the outer pipe body.

[0013] Furthermore, the hot air blower includes a housing, inside which a heating component and a circulating fan are provided. The housing is also provided with at least one air inlet communicating with the outside and at least one air outlet communicating with the inside of the drying chamber, and the air inlet is connected to the outlet of the circulating fan.

[0014] Furthermore, the microwave generator includes a uniform magnetron and a transformer electrically connected to the magnetron.

[0015] Furthermore, a control box is also provided on the outside of the conveyor frame.

[0016] Furthermore, the fixing frame is an aluminum alloy fixing frame.

[0017] The beneficial effects of this utility model are as follows: This utility model provides a rapid drying device for cardboard box printing. By sequentially installing printed cardboard box blanks to be dried in the U-shaped groove, and then conveying them by a conveyor belt, a large number of cardboard box blanks can be sequentially fed into the drying chamber for drying. This enables large-scale, automated drying of cardboard box blanks, meeting the drying needs of large-scale production and helping to improve the drying efficiency and economic benefits of cardboard box processing. Simultaneously, microwaves emitted by a microwave generator penetrate the interior of the cardboard box blanks, causing the internal moisture to rapidly diffuse to the surface and evaporate, accelerating the drying speed of the printed ink on the surface of the cardboard box blanks and improving printing quality. A hot air blower is also provided, blowing hot air from both sides of the drying chamber onto the cardboard box blanks on the conveyor belt in the middle. This directly acts on the surface of the cardboard box, rapidly evaporating the moisture pushed to the surface by the microwaves and drying and curing the printed layer on the surface of the cardboard box, thus significantly accelerating the drying rate. This device is suitable for rapid drying of cardboard boxes of various materials after printing. In addition, the PTFE coating effectively prevents the fixing frame from sticking to the carton blank or the printing ink on the carton blank, thus avoiding damage to the integrity of the carton structure and the printing layer. Attached Figure Description

[0018] Figure 1 A simplified structural diagram of a rapid drying device for cardboard box printing provided by this utility model;

[0019] Figure 2 This is a simplified cross-sectional schematic diagram of the drying oven provided by this utility model;

[0020] Figure 3 A schematic diagram of the front structure of the fixing frame provided by this utility model;

[0021] Figure 4 A side view of the fixing frame provided by this utility model.

[0022] Attached Figure Labels

[0023] 1. Conveyor frame; 101. Conveyor belt; 2. Drying oven; 3. Fixing frame; 31. Partition net; 311. Rectangular frame; 312. Connecting strip; 32. L-shaped bracket; 4. Carton blank; 5. U-shaped trough; 6. Microwave generator; 7. Hot air blower; 8. Heat exhaust port; 9. Exhaust duct; 10. Temperature and humidity sensor; 11. Control box. Detailed Implementation

[0024] To provide a more detailed description of this utility model, the following description is provided in conjunction with the accompanying drawings. It should be noted that the embodiments described below are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] refer to Figure 1 As shown, a rapid drying device for printing cartons is used for the rapid drying of carton blanks 4 to be dried after printing. It includes a conveyor frame 1 and a drying box 2 fixedly connected to the top of the conveyor frame 1.

[0026] Specifically, refer to Figure 1 and Figure 2 As shown, the conveyor frame 1 is equipped with a conveyor belt 101 and a drive mechanism (not shown in the figure) for driving the conveyor belt 101 to operate. The drive mechanism drives the conveyor belt 101 to perform conveying. In this embodiment, the drive mechanism is a motor.

[0027] A plurality of fixed frames 3 are fixedly arranged on the conveying surface of the conveyor belt 101 along the conveying direction; the fixed frames 3 are arranged at equal intervals, and the surface of the fixed frames 3 is provided with a polytetrafluoroethylene coating (not shown in the figure).

[0028] The polytetrafluoroethylene coating effectively prevents the fixing frame 3 from sticking to the carton blank 4 or the printing ink on the carton blank 4, thus avoiding damage to the integrity of the carton structure and the printing layer.

[0029] refer to Figure 3 and Figure 4 As shown, the fixing frame 3 includes a partition net 31 and an L-shaped bracket 32. The side of the partition net 31 near one end of the conveyor belt 101 is fixedly connected to one end of the L-shaped bracket 32, and a U-shaped groove 5 for accommodating and fixing the carton blank 4 is formed between the L-shaped bracket 32 ​​and the partition net 31.

[0030] Before drying, printed carton blanks 4 are sequentially installed in the U-shaped groove 5. Then, via conveyor belt, a large batch of carton blanks 4, contained in the fixed frame 3, are sequentially fed into the drying chamber for drying. This achieves large-scale, automated drying of the printed carton blanks 4, meeting the drying needs of large-scale production and improving drying efficiency and economic benefits in carton processing. In practical use, a large batch of carton blanks 4 can be fed into the drying chamber 2 for unified drying according to drying requirements; alternatively, the carton blanks 4 can be dried while being conveyed.

[0031] The fixing frame 3 is an aluminum alloy fixing frame; the partition 31 includes a rectangular outer frame 311, and the rectangular outer frame 311 is provided with a plurality of connecting strips 312. The partition 31 can isolate adjacent cardboard blanks while reducing the contact area with the cardboard blanks 4.

[0032] refer to Figure 1 and Figure 2 As shown, the drying chamber 2 has an inlet 21 and an outlet 22 at both ends along the conveying direction; the top of the inner side of the drying chamber 2 has a number of microwave power supply ports (not shown in the figure) arranged in a matrix, and each microwave power supply port is equipped with a microwave generator 6.

[0033] Microwaves are emitted by microwave generator 6. The radiation of microwaves can penetrate the interior of the cardboard blank conveyed on the lower conveyor belt 101, causing the moisture inside the cardboard blank 4 to vaporize rapidly and diffuse quickly to the surface. The moisture is then absorbed and evaporated, completing the drying of the inside of the cardboard blank. At the same time, it accelerates the drying speed of the printing ink on the surface of the cardboard blank 4, which is beneficial to improving the printing quality. In addition, the drying speed is fast and the drying is uniform. Furthermore, microwaves can also kill bacteria on the cardboard blank 4, improving the safety of the cardboard blank after it is folded into a cardboard box.

[0034] The microwave generator 6 includes a uniform magnetron (not shown in the figure) and a transformer (not shown in the figure) electrically connected to the magnetron.

[0035] The transformer provides the required voltage to the magnetron. The magnetron accelerates electrons through an electric field, controls their trajectory through a magnetic field, and excites microwaves through a resonant cavity. Ultimately, it efficiently converts electrical energy into microwave energy, which is then applied to the cardboard blank 4 for drying.

[0036] The drying chamber 2 is equipped with several hot air blowers 7 equidistantly arranged on both the left and right sides along the conveying direction, and the hot air blowers 7 on the left and right sides are symmetrically arranged. In use, the hot air blowers 6 arranged on both sides along the conveying direction inside the drying chamber 2 blow hot air into the drying chamber 2 to dry the cardboard blanks 4 on the conveyor belt 101 that enter the drying chamber, so that the moisture on their surface evaporates and dries quickly.

[0037] The top of the drying chamber 2 has several exhaust ports 8 for discharging hot and humid gas from inside the drying chamber 2, and each exhaust port 8 is equipped with an exhaust pipe 9. The exhaust ports 8 ensure that hot and humid gas inside the drying chamber is quickly discharged through the exhaust pipes 9, preventing excessively high local temperatures or humidity buildup in the drying chamber 2.

[0038] The hot air blower 7 includes a housing, inside which a heating component and a circulating fan are provided. The housing is also provided with at least one air inlet communicating with the outside and at least one air outlet communicating with the inside of the drying box 2, and the air inlet is connected to the outlet of the circulating fan.

[0039] The circulating fan draws ambient air from the outside environment through the air inlet of the casing and introduces it into the circulating fan. When the ambient air flows through the heating component, the heating component can convert electrical energy into heat energy through convection heat transfer, which quickly heats the air. The heated high-temperature air forms a directional airflow under the continuous pressure of the circulating fan and is sprayed into the drying chamber through the air outlet. This ensures that the hot air is in full contact with the cardboard blank 4 on the conveyor belt 101, evaporating and drying the surface moisture. Most of the generated hot and humid air is discharged through the heat exhaust port 8, and a small part can be returned to the air inlet of the hot air blower through the pipeline to form a closed loop.

[0040] The exhaust duct 9 includes an inner duct body and an outer duct body sleeved outside the inner duct body, with an insulation layer provided between the inner and outer duct bodies. In this embodiment, the inner and outer duct bodies are made of polyethylene material, and the insulation layer is a rock wool layer.

[0041] The insulation layer provides insulation for the exhaust duct 9, preventing hot and humid gas from entering the exhaust duct 9 and then cooling back into the drying chamber 2, thus affecting the normal drying process and helping to improve the drying speed.

[0042] In this embodiment, an exhaust fan is installed on the top of the drying chamber 2, and the exhaust fan is connected to the exhaust pipe 9. The exhaust fan allows for the timely extraction of hot and humid gas generated inside the drying chamber 2, ensuring efficient drying.

[0043] In some embodiments, the drying chamber 2 is equipped with a temperature and humidity sensor 10 for detecting the temperature and humidity inside the drying chamber 2. By acquiring the temperature and humidity data inside the drying chamber 2, it can be determined whether the drying is proceeding normally. At the same time, the power of the drying equipment and the exhaust fan can be controlled according to the temperature and humidity data to ensure the efficient operation of the drying process.

[0044] In some embodiments, both the inlet 21 and the outlet 22 are provided with a microwave shielding curtain to reduce microwave leakage inside the drying oven 2. In actual use, the microwave shielding curtain is a tassel-shaped curtain to facilitate the passage of the fixing frame 3 and the cardboard blank 4.

[0045] By using a microwave shielding curtain, the amount of microwave leakage generated by the microwave generator 6 can be reduced, thereby improving microwave utilization and drying efficiency while saving energy and reducing operating costs.

[0046] In some embodiments, a control box 11 is also provided on the outside of the conveyor frame 101 for controlling the operation of the various components of the device.

[0047] This utility model provides a rapid drying device for carton printing. By combining microwave drying and hot air drying, the moisture inside the carton blank 4 can be quickly evaporated and the printing layer on the surface of the carton blank 4 can be quickly cured and adhered during the drying process, thereby significantly improving the efficiency of carton production.

[0048] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model and do not limit the utility model to the specific implementations described. Obviously, other modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. They are not intended to limit the utility model, and any simple modifications to this utility model fall within the protection scope of this utility model.

Claims

1. A rapid drying device for carton printing, characterized by, It includes a conveyor frame and a drying box fixedly connected to the top of the conveyor frame; The conveyor frame is provided with a conveyor belt and a drive mechanism for driving the conveyor belt to operate. Several fixed frames are fixedly arranged on the conveyor surface of the conveyor belt along the conveying direction. The fixing frames are arranged at equal intervals, and the surface of the fixing frames is coated with polytetrafluoroethylene. The fixing frame includes a partition net and an L-shaped bracket. The side of the partition net near one end of the conveyor belt is fixedly connected to one end of the L-shaped bracket, and a U-shaped groove for accommodating and fixing the carton blank is formed between the L-shaped bracket and the partition net. The drying chamber has a feed inlet and a discharge outlet at both ends along the conveying direction; a number of microwave power supply ports are arranged in a matrix on the top of the inner side of the drying chamber, and each microwave power supply port is equipped with a microwave generator; a number of hot air blowers are equidistantly arranged on the left and right sides of the drying chamber along the conveying direction, and the hot air blowers on the left and right sides are symmetrically arranged. The top of the drying chamber is provided with several heat exhaust ports for discharging hot and humid gas from inside the drying chamber, and each heat exhaust port is provided with an exhaust pipe.

2. A quick drying device for carton printing according to claim 1, characterized in that, The mesh includes a rectangular outer frame, and the rectangular outer frame is provided with several connecting strips.

3. A quick drying device for carton printing according to claim 1, characterized in that, The drying chamber is equipped with a temperature and humidity sensor for detecting the temperature and humidity inside the drying chamber.

4. The rapid drying apparatus for cardboard box printing according to claim 1, characterized in that, Both the inlet and outlet are equipped with microwave shielding curtains to reduce microwave leakage inside the drying oven.

5. The rapid drying apparatus for cardboard box printing according to claim 1, characterized in that, The top of the drying chamber is equipped with an exhaust fan, which is connected to the exhaust pipe.

6. The rapid drying apparatus for cardboard box printing according to claim 1, characterized in that, The exhaust pipe includes an inner pipe body and an outer pipe body sleeved on the outer pipe body, and an insulation layer is provided between the inner pipe body and the outer pipe body.

7. The rapid drying apparatus for cardboard box printing according to claim 1, characterized in that, The hot air blower includes a housing, inside which a heating component and a circulating fan are provided. The housing is also provided with at least one air inlet communicating with the outside and at least one air outlet communicating with the inside of the drying chamber, and the air inlet is connected to the outlet of the circulating fan.

8. A rapid drying apparatus for cardboard box printing according to claim 1, characterized in that, The microwave generator includes a uniform magnetron and a transformer electrically connected to the magnetron.

9. A rapid drying apparatus for cardboard box printing according to claim 1, characterized in that, A control box is also provided on the outside of the conveyor frame.

10. A rapid drying apparatus for cardboard box printing according to claim 1, characterized in that, The mounting bracket is an aluminum alloy mounting bracket.

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