Drying device for carton color surface printing

Abstract

The drying device for carton color surface printing comprises a conveying mechanism, the conveying mechanism comprises a supporting seat, the two ends of the interior of the supporting seat are both rotationally connected with a first roller shaft and a second roller shaft, and a motor is installed at one end of the side face of the supporting seat; an output shaft of the motor is inserted into the supporting base and connected with a first roller shaft, a steel wire mesh belt is installed between the first roller shaft and a second roller shaft, and supporting legs are installed at the two ends of the bottom of the supporting base. Hot air is dispersed through the partition plates and the air holes of the drying box mechanism, the phenomenon that patterns are fuzzy due to direct blowing of printing ink is avoided, and drying uniformity is guaranteed; the filtering mechanism forms a hot air circulating system through an air extracting pump, a filter element and a connecting pipe, hot air in the supporting base is filtered and then fed into the box body again, heat waste is reduced, the energy consumption of the electric heating bar is reduced, the drying quality of carton color surface printing is improved, and the use cost is reduced through heat energy recovery.

Description

Technical Field

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

[0002] Color printing on cardboard boxes is the process of printing a design onto the surface of a cardboard box through plate making, ink transfer, and other processes. The typical process includes: making a printing plate based on the design, transferring ink to the surface of the cardboard box using printing equipment (such as offset printing machine or flexographic printing machine) to form a color pattern, and drying the ink after printing to ensure that the pattern is cured and to avoid smudging or fading, ultimately forming a finished cardboard box. In this process, the drying step directly affects the printing quality and production efficiency and is one of the key steps in color printing.

[0003] Currently, drying operations after color printing on cardboard boxes typically employ methods such as hot air drying, infrared drying, or ultraviolet (UV) drying. Common drying devices often involve conveyor belts carrying the cardboard boxes into a drying chamber, which houses heating elements (such as electric heating tubes or infrared lamps) or a hot air circulation system. The ink on the cardboard surface is dried by heating the air or through radiant heat transfer. For example, traditional hot air drying devices use a fan to blow heated air onto the cardboard surface, utilizing thermal convection to accelerate the evaporation of solvents in the ink. Infrared drying, on the other hand, directly heats the ink layer through infrared radiation, achieving rapid curing.

[0004] However, existing drying technologies have obvious drawbacks in practical applications. Because the hot air blows directly onto the cardboard box, it may blow away the ink before it dries, which affects the printing effect. In addition, the hot air circulation system is mostly unidirectional, resulting in low heat utilization and high operating costs. To solve this problem, we propose a drying device for color printing on cardboard boxes. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a drying device for color printing on cardboard boxes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A drying device for color printing on cardboard boxes includes a conveying mechanism. The conveying mechanism includes a support base. A first roller and a second roller are rotatably connected to both ends inside the support base. A motor is installed at one end of the side of the support base. The output shaft of the motor is inserted into the interior of the support base and connected to the first roller. A wire mesh belt is installed between the first roller and the second roller. Support legs are installed at both ends of the bottom of the support base. A drying chamber mechanism is installed on the top of the support base. A filter mechanism is installed on the side of the drying chamber mechanism. The filter mechanism is inserted into the interior of the conveying mechanism and the interior of the drying chamber mechanism.

[0008] The drying oven mechanism includes a box body fixed on a support base. The box body has an open bottom structure. A fixing plate, a heating rod, and a partition are installed inside the box body. A fan is installed on the fixing plate, and ventilation holes are provided on the partition.

[0009] Preferably, the number of the fans is at least three, and the three fans are located on the fixed plate and are symmetrically distributed.

[0010] Preferably, the number of heating rods is several, and the several heating rods are located inside the box and are symmetrically distributed.

[0011] Preferably, the number of air vents is several, and the several air vents are located on the partition and are distributed at equal intervals.

[0012] Preferably, the filtration mechanism includes a housing fixed to the side of the box, a first connecting pipe installed on the top of the housing, an air pump installed on the bottom of the housing, a second connecting pipe installed on the bottom of the air pump, a filter element installed inside the housing, and a cover plate installed on the side of the housing.

[0013] Preferably, the first connecting pipe passes through the side of the housing and is inserted into the interior of the housing, and the second connecting pipe is inserted into the side of the support and is inserted into the interior of the support.

[0014] Preferably, the filter element is activated carbon, and the filter element is slidably connected to the inner wall of the housing.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The drying oven mechanism of this utility model uses a partition and ventilation hole design. The fan blows the air heated by the heating rod toward the partition. After the airflow passes through the evenly distributed ventilation holes on the partition, it forms a dispersed and gentle hot air that acts on the surface of the carton in a non-direct blowing manner. This design ensures that the ink layer receives uniform heat conduction and accelerates solvent evaporation, while avoiding the impact of strong winds on the undried ink, preventing the pattern from blurring or the ink from accumulating, thereby significantly improving the drying quality and pattern integrity of the color printing on the carton.

[0017] The filtration mechanism, through the synergistic action of the air pump, filter element, and connecting pipe, constructs a hot air recovery system. When the hot air in the drying chamber enters the shell through the second connecting pipe, the activated carbon filter element can adsorb ink volatiles and impurities in the airflow. The purified hot air is then reintroduced into the drying chamber mechanism through the first connecting pipe to participate in the drying cycle again. This design not only reduces the direct emission of heat but also avoids the energy waste of traditional unidirectional hot air systems and reduces the workload of the heating rod. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a drying device for color printing on cardboard boxes according to the present invention;

[0019] Figure 2 for Figure 1 Cross-sectional view of the central conveyor mechanism;

[0020] Figure 3 for Figure 1 Cross-sectional view of the drying oven mechanism and the filtration mechanism;

[0021] Figure 4 for Figure 3 Installation diagram of a medium-sized fan;

[0022] Figure 5 for Figure 3 Installation diagram of the electric heating element.

[0023] In the diagram: 1 Conveying mechanism, 11 Support base, 12 First roller shaft, 13 Second roller shaft, 14 Motor, 15 Steel wire mesh belt, 2 Support leg, 3 Drying oven mechanism, 31 Box body, 32 Fixing plate, 33 Fan, 34 Heating rod, 35 Partition, 36 Ventilation hole, 4 Filtering mechanism, 41 Shell, 42 First connecting pipe, 43 Air pump, 44 Second connecting pipe, 45 Filter element, 46 Cover plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-5A drying device for color printing on cardboard boxes includes a conveying mechanism 1. The conveying mechanism 1 includes a support base 11. A first roller 12 and a second roller 13 are rotatably connected to both ends inside the support base 11. A motor 14 is installed at one end of the side of the support base 11. The output shaft of the motor 14 is inserted into the inside of the support base 11 and connected to the first roller 12. A wire mesh belt 15 is installed between the first roller 12 and the second roller 13. Support legs 2 are installed at both ends of the bottom of the support base 11. A drying chamber mechanism 3 is installed on the top of the support base 1. A filter mechanism 4 is installed on the side of the drying chamber mechanism 3. The filter mechanism 4 is inserted into the inside of the conveying mechanism 1 and the inside of the drying chamber mechanism 3.

[0026] In this embodiment, refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The drying oven mechanism 3 includes a box body 31 fixed on a support base 11. The box body 31 has an open bottom structure. At least three fans 33 are symmetrically distributed on a fixed plate 32 installed inside the box body. This symmetrical layout can ensure that the airflow evenly covers the surface of the carton. Several symmetrically distributed electric heating rods 34 form a uniform heating area inside the box body. The fans 33 work together to blow hot air toward the partition 35. The partition 35 has evenly distributed equidistant air holes 36, which can transform the direct airflow into dispersed and gentle hot air, avoiding strong wind impact on the undried ink and causing the pattern to become blurred. At the same time, the airflow buffering achieves uniform heating of the carton surface, significantly improving the drying quality and pattern integrity.

[0027] In this embodiment, refer to Figure 1 and Figure 3 The filtration mechanism 4 includes a housing 41 fixed to the side of the box 31. A first connecting pipe 42 at the top of the housing 41 penetrates the box 31 and is inserted inside. An air pump 43 at the bottom is inserted into the support base 11 through a second connecting pipe 44. An activated carbon filter element 45, which is slidably connected inside the housing, can be easily replaced through a side cover 46. During operation, the air pump 43 draws hot air from the support base 11 into the housing 41 through the second connecting pipe 44. The activated carbon filter element 45 adsorbs ink volatiles and impurities in the airflow. The purified hot air is then reintroduced into the box 31 through the first connecting pipe 42 to participate in the drying cycle. This design constructs a hot air recovery system, which reduces heat emissions and lowers the workload of the heating rod 34 through recycling, improving thermal energy utilization while taking into account both environmental protection and practicality.

[0028] After the motor 14 starts, it drives the first roller 12 to rotate. The first roller 12 drives the second roller 13 to rotate through the wire mesh belt 15, so that the wire mesh belt 15 circulates in the support seat 11, conveying the printed cartons to the bottom of the drying box mechanism 3. In the drying box mechanism 3, the fan 33 blows the air heated by the electric heating rod 34 toward the partition 35. After the airflow is dispersed through the vent holes 36 on the partition 35, it acts on the surface of the cartons in the form of gentle hot air for drying. At the same time, the air pump 43 of the filtration mechanism 4 draws the hot air in the support seat 11 into the housing 41 through the second connecting pipe 44. The filter element 45 in the housing 41 filters the hot air. The purified hot air is sent back into the box 31 through the first connecting pipe 42, heated by the electric heating rod 34, and participates in the drying cycle again. Throughout the process, the wire mesh belt 15 continuously conveys the cartons, the drying box mechanism 3 provides uniform hot air, and the filtration mechanism 4 realizes the recycling of hot air, together completing the drying operation after the color printing of the cartons.

[0029] In summary, this utility model disperses hot air through the partitions and vents of the drying oven mechanism, avoiding direct blowing of ink and causing blurring of the pattern, thus ensuring uniform drying. The filtration mechanism forms a hot air circulation system through an air pump, filter element, and connecting pipe, filtering the hot air in the support base and then sending it back into the oven, reducing heat waste and lowering the energy consumption of the heating rod. This not only improves the drying quality of the color printing on the carton but also reduces operating costs through heat recovery.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drying apparatus for color printing on cardboard boxes, comprising a conveying mechanism (1), characterized in that, The conveying mechanism (1) includes a support base (11), with a first roller shaft (12) and a second roller shaft (13) rotatably connected to both ends of the interior of the support base (11). A motor (14) is installed at one end of the side of the support base (11), and the output shaft of the motor (14) is inserted into the interior of the support base (11) and connected to the first roller shaft (12). A wire mesh belt (15) is installed between the first roller shaft (12) and the second roller shaft (13). Support legs (2) are installed at both ends of the bottom of the support base (11), and a drying box mechanism (3) is installed on the top of the support base (11). A filter mechanism (4) is installed on the side of the drying box mechanism (3), and the filter mechanism (4) is inserted into the interior of the conveying mechanism (1) and the interior of the drying box mechanism (3). The drying box mechanism (3) includes a box body (31) fixed on a support base (11). The box body (31) has an open bottom structure. A fixing plate (32), an electric heating rod (34) and a partition (35) are installed inside the box body (31). A fan (33) is installed on the fixing plate (32), and a ventilation hole (36) is opened on the partition (35).

2. The drying device for color printing on cardboard boxes according to claim 1, characterized in that, The number of the fans (33) is at least three, and the three fans (33) are located on the fixed plate (32) and are symmetrically distributed.

3. The drying device for color printing on cardboard boxes according to claim 1, characterized in that, The number of heating rods (34) is several, and the several heating rods (34) are located inside the box (31) and are symmetrically distributed.

4. The drying device for color printing on cardboard boxes according to claim 1, characterized in that, The number of the vent holes (36) is several, and the several vent holes are located on the partition plate (35) and are distributed at equal intervals.

5. The drying apparatus for color printing on cardboard boxes according to claim 1, characterized in that, The filtration mechanism (4) includes a housing (41) fixed to the side of the box (31), a first connecting pipe (42) installed on the top of the housing (41), an air pump (43) installed on the bottom of the housing (41), a second connecting pipe (44) installed on the bottom of the air pump (43), a filter element (45) installed inside the housing (41), and a cover plate (46) installed on the side of the housing (41).

6. The drying apparatus for color printing on cardboard boxes according to claim 5, characterized in that, The first connecting pipe (42) passes through the side of the box (31) and is inserted into the inside of the box (31), and the second connecting pipe (44) is inserted into the side of the support (11) and is inserted into the inside of the support (11).

7. A drying apparatus for color printing on cardboard boxes according to claim 5, characterized in that, The filter element (45) is activated carbon, and the filter element (45) is slidably connected to the inner wall of the shell (41).

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