Inkjet drying apparatus and inkjet printing apparatus

Abstract

This utility model claims protection for an inkjet drying device and an inkjet printing device. The key technical points of the solution include a fan and a heater, as well as an air outlet device. The fan draws in air, sends it to the heater, and the air outlet device blows out the air required for the corresponding printing medium. The air outlet device includes an air direction regulator for dynamically adjusting the airflow direction. The inkjet printing device includes a printing device and an inkjet drying device. The printing device further includes a feeding device, a printing device, and a receiving device. The feeding device and the receiving device cooperate to drive the printing medium sequentially through the printing device and the inkjet drying device. This technical solution has the beneficial effect that the fan, heater, and air outlet device cooperate to blow out the required air for different printing media, and the air direction regulator dynamically adjusts the airflow direction.

Description

Technical Field

[0001] This utility model relates to the field of printer equipment, and more specifically, to an inkjet drying device and an inkjet printing device. Background Technology

[0002] In existing technologies, inkjet printing systems directly use heating drying (electric heating tubes or infrared lamps) to dry the printed output. In order to accelerate drying or improve energy efficiency, the distance between the dryer and the paper is adjusted so that more heat can be conducted to the printed output. The disadvantage is that the printing medium (paper or film) is easily deformed and wrinkled by excessively high temperature or uneven heating. Utility Model Content

[0003] To address the shortcomings of existing technologies, an inkjet drying device and an inkjet printing device are provided, which can reduce problems such as heat deformation and wrinkling of printing media.

[0004] To achieve the above objectives, the following technical solution is provided: an inkjet drying device, including a fan and a heater, and also including an air outlet device; The fan draws in air and sends it into the heater, and the air outlet blows out the air required for the corresponding printing medium. The air outlet device includes a wind direction regulator for dynamically adjusting the airflow direction.

[0005] A further optimization of this invention is that the airflow regulator performs reciprocating airflow on the printing medium.

[0006] An inkjet printing device includes a printing unit and an inkjet drying unit; The printing device also includes a feeding device, a printing device, and a receiving device; The printing device also includes an infeed roller and a first discharge roller; The feed roller and the first discharge roller work together to adjust the printing medium transport path and work together with the inkjet drying device to dry the printing medium. The inkjet drying device described above is used.

[0007] In a further optimization of this invention, the printing device also includes a final discharge roller; The first discharge roller is positioned near the conveying end of the printing device; the final discharge roller is positioned near the receiving device. The inkjet drying device is configured to correspond to the path between the first discharge roller and the final discharge roller. The first discharge roller and the final discharge roller work together to increase the drying path of the printing media.

[0008] In a further optimization of this invention, the printing device also includes a second discharge roller, which cooperates with the first discharge roller and the final discharge roller to further increase the drying path of the printing medium. The drying path is divided into at least two sections; The drying path is divided into a natural cooling path and / or a drying path corresponding to an inkjet drying device.

[0009] In a further optimization of this utility model, at least two inkjet drying devices are provided, and the inkjet drying devices are configured to correspond to the printing media transport route.

[0010] The technical solution has the following advantages: the fan, heater and air outlet device work together to blow out the required air for different printing media, and the air direction is dynamically adjusted and controlled by the air direction regulator. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the planar structure of the inkjet printing device of this utility model.

[0012] Figure 2 This is a schematic diagram of the planar structure of another inkjet printing device according to the present invention.

[0013] Figure 3 This is a schematic diagram of the planar structure of another inkjet printing device according to the present invention.

[0014] Figure 4 This is a schematic diagram of the planar structure of the inkjet drying device of this utility model.

[0015] Reference numerals: 1. Fan; 2. Heater; 3. Air outlet device; 31. Air direction regulator; 4. Feeding device; 5. Printing device; 6. Receiving device; 7. Feed roller; 8. First discharge roller; 9. Final discharge roller; 10. Second discharge roller. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0017] Reference Figure 1-4 As shown, an inkjet drying device includes a fan 1 and a heater 2, and also includes an air outlet device 3; Fan 1 draws in air and sends it into heater 2, and the air outlet 3 blows out the air required for the corresponding printing medium. The air outlet device 3 includes an air direction regulator 31 for dynamically adjusting the airflow direction.

[0018] like Figure 4 As shown, after the fan 1 starts, it draws in ambient air and delivers the drawn-in air to the heater 2 for heating, forming a hot airflow, which is then delivered to the air outlet device 3; The fan 1 and heater 2 can be set to fixed values ​​for operation, and can also be equipped with control chips to control their air volume and heating temperature; The wind direction regulator 31 can be driven by a stepper motor, and can also be provided with at least one air outlet. The wind direction regulator 31 controls the airflow direction through the air outlet. Furthermore, multiple air outlets are provided, and an integrated control chip is installed on the air direction regulator 31 to automatically control the airflow direction based on the printing medium material, environmental data, and printing data. At the same time, it can also control the air volume and temperature in conjunction with the fan 1 and heater 2 to automatically adapt to different printing media materials. At the same time, multiple air outlets can be controlled individually, and the air blown out by each air outlet can be different; Fan 1, heater 2 and airflow regulator 31 can be connected via flexible hoses; The airflow regulator 31 dynamically adjusts the airflow direction, resulting in different areas of hot air action and residence time for the ink on the printing medium surface. This allows for better drying of the printing medium. Compared with existing technologies, it can better solve the problems of deformation and wrinkling caused by local overheating and uneven evaporation of moisture in the printing medium due to continuous heating at a fixed point. Thus, it ensures the flatness of the printing medium while achieving efficient drying.

[0019] Preferably, the airflow regulator 31 performs reciprocating airflow on the printing medium.

[0020] The wind direction regulator 31 is set to a fixed cycle sweeping mode, which can be up-and-down cycle sweeping and / or left-and-right cycle sweeping. This fixed airflow pattern ensures that hot air is evenly distributed across the entire surface of the printing medium, avoiding the problem of localized overheating found in existing technologies. Meanwhile, dynamic air sweeping promotes air turbulence above the printing medium, accelerating the diffusion and dissipation of steam, thereby preventing the printing medium from deforming and wrinkling while improving the overall drying efficiency.

[0021] An inkjet printing device includes a printing unit and an inkjet drying unit; The printing device also includes a feeding device 4, a printing device 5, and a receiving device 6; The printing device also includes an infeed roller 7 and a first discharge roller 8; The feed roller 7 and the first discharge roller 8 work together to adjust the printing medium transport path and work together with the inkjet drying device to dry the printing medium; The inkjet drying device is the same as described above.

[0022] like Figure 1-4 As shown, the above-mentioned inkjet drying device is installed in an inkjet printing device. The feed roller 7 outputs the printing medium, which is then pulled by the first output roller 8 and conveyed to the receiving device 6 after passing through the printing device 5. The printing medium passes through the printing device 5 and the inkjet drying device in sequence along a preset path. When the printing medium passes through the inkjet printing device 5, the required graphics and text are printed on its surface. Then, the printing medium carrying the undried ink enters the working area of ​​the inkjet drying device. At this time, the inkjet drying device is activated, and its air outlet device 3 blows out uniform hot air that has been dynamically adjusted by the air direction adjuster 31 to act on the surface of the wet printing medium and dry the ink. Finally, the dried printing medium is collected by the collection device 6. The first discharge roller 8 can be placed in any position to avoid direct contact between the printing medium and the equipment with undried ink, which would result in poor printing quality due to friction between the equipment and the printing medium. At the same time, it can also increase the path for drying the printing medium, so that the inkjet drying device can dry the printing medium. By extending the effective drying path length and natural cooling path length of the printing medium in the inkjet drying device through the first discharge roller 8, the printing medium is no longer rolled up by the take-up device 6 after passing through the inkjet drying device in a short distance. Instead, it passes around the first discharge roller 8 and then passes through the inkjet drying device, or passes through the inkjet drying device first and then passes around the first discharge roller 8. Both of these can increase the time that the printing medium is exposed to hot air or extend the natural cooling path. While ensuring an effective drying path and sufficient drying time, it can also reduce the space required for the equipment and extend the heating time, which allows for the use of relatively low air temperature, further reducing the risk of the printing medium deforming and wrinkling due to thermal shock. An inkjet drying unit is installed in an inkjet printer to effectively solve the problem of printing media deformation during the immediate drying process after printing, ensuring the flatness and quality of the final output product and realizing the integrated operation of printing and drying.

[0023] Preferably, the printing apparatus further includes a final discharge roller 9; The first discharge roller 8 is positioned near the conveying end of the printing device 5; the final discharge roller 9 is positioned near the receiving device 6. The inkjet drying device is configured with a path between the first discharge roller 8 and the final discharge roller 9. The first discharge roller 8 and the final discharge roller 9 work together to increase the drying path of the printing media.

[0024] like Figure 3 As shown, the first discharge roller 8 and the final discharge roller 9 work together, compared to Figure 1 The drying path in the middle is extended, and the drying path of the printing media is extended compared to Figure 1 and Figure 2 It also further reduces the space required for the equipment; After the printing medium comes out of the inkjet printing device 5, it first passes through the first discharge roller 8, and then goes around the final discharge roller 9 before heading to the receiving device 6. An inclined drying path is formed between the first discharge roller 8 and the final discharge roller 9. The air outlet device 3 is set up to correspond to the drying path in order to dry the printing medium to the greatest extent.

[0025] Preferably, the printing apparatus further includes a second discharge roller 10, which cooperates with the first discharge roller 8 and the final discharge roller 9 to further increase the drying path of the printing medium. The drying path is divided into at least two sections; The drying path is divided into a natural cooling path and / or a drying path corresponding to an inkjet drying device.

[0026] Figure 1 The printing media delivery path shown is longer than Figure 3 The conveying path and drying path are smaller than Figure 3 However, it also adds a natural cooling path, and the air outlet device 3 can be set to correspond to any of the path segments. Drying the ink before it dries can reduce the temperature of the printing medium during collection, making it easier to remove the printing medium. Natural cooling followed by drying via air outlet 3 reduces deformation caused by temperature differences between the inside and outside of the printing medium during drying. Natural cooling also promotes the initial curing of the inkjet ink surface, facilitating subsequent drying. Compared to existing technologies, this drying process is no longer a single rapid heating process, but a multi-combination process that includes drying and natural cooling.

[0027] Preferably, at least two inkjet drying units are provided, and the inkjet drying units are configured to correspond to the printing media transport route.

[0028] like Figure 2 As shown, multiple air outlet devices 3 are installed along the transport route of the printing medium to dry the printing medium; Furthermore, each fan 1 and heater 2 can control the wind speed and temperature. It is even possible to set up a separate controller to independently control the wind speed, temperature and direction of each inkjet drying unit to match the different printing conditions and drying degree of the printing media. It can also form a stepped drying with high temperature and low temperature to achieve faster drying and lower temperature material collection.

[0029] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An inkjet drying apparatus, comprising a fan and a heater, characterized in that, It also includes an air outlet device; The fan draws in air and sends it into the heater, and the air outlet blows out the air required for the corresponding printing medium. The air outlet device includes a wind direction regulator for dynamically adjusting the airflow direction.

2. The inkjet drying apparatus according to claim 1, characterized in that, The airflow regulator reciprocates to sweep the printing medium.

3. An inkjet printing device, characterized in that, It includes a printing unit and an inkjet drying unit; The printing device also includes a feeding device, a printing device, and a receiving device; The printing device also includes an infeed roller and a first discharge roller; The feed roller and the first discharge roller work together to adjust the printing medium transport path and work together with the inkjet drying device to dry the printing medium. The inkjet drying device is the inkjet drying device as described in any one of claims 1-2.

4. The inkjet printing device according to claim 3, characterized in that, The printing device also includes a final discharge roller; The first discharge roller is positioned near the conveying end of the printing device; the final discharge roller is positioned near the receiving device. The inkjet drying device is configured to correspond to the path between the first discharge roller and the final discharge roller. The first discharge roller and the final discharge roller work together to increase the drying path of the printing media.

5. The inkjet printing device according to claim 4, characterized in that, The printing device also includes a second discharge roller, which cooperates with the first discharge roller and the final discharge roller to further increase the drying path of the printing medium. The drying path is divided into at least two sections; The drying path is divided into a natural cooling path and / or a drying path corresponding to an inkjet drying device.

6. The inkjet printing device according to claim 5, characterized in that, At least two inkjet drying devices are provided, and the inkjet drying devices are set up according to the printing media transport route.

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