Airflow circulating oven device of photogravure press

Abstract

The utility model belongs to the technical field of gravure printing, and discloses an airflow circulation drying oven device of a gravure printing machine, which comprises a drying oven bottom box, a heating component, a drying oven top box, a fan and an air circulation component, the heating assembly is arranged between the oven bottom box and the oven top box; a drying area for a film material to pass through is formed between the drying oven bottom box and the drying oven top box; a wind energy storage area is formed between the drying oven top box and the heating assembly, and a plurality of fans for conveying natural wind into the wind energy storage area are further arranged on the drying oven top box; a gas extraction channel communicated with the drying area is formed in the drying oven top box; the air circulation assembly is used for circulating air flow of the exhaust air channel to the wind energy storage area. By arranging the fan and the air circulation assembly, uniform air blowing can be achieved, so that the printing film is heated uniformly and can be dried timely and fully, the quality of finished products can be guaranteed, and the printing speed of the whole machine can be increased.

Description

Technical Field

[0001] This utility model belongs to the field of gravure printing technology, and more specifically relates to an airflow circulation drying oven device for gravure printing machines. Background Technology

[0002] In the printing machinery industry, gravure printing presses are commonly used equipment, and their main structure is well-known to technicians. Each color group in a gravure printing press requires drying, typically using a drying chamber, one chamber per color group. Current drying chambers generally consist of a chamber body with slit-shaped air nozzles and return air vents on the side facing the printing film. This structure results in low return air volume and slow drying speed in wide-format printing. Consequently, the printing film cannot dry sufficiently in a timely manner, leading to higher ink residue, increased waste, and a decrease in the overall printing speed of the machine.

[0003] Chinese patent CN207088713U discloses a drying oven for a gravure printing machine, including an oven body with multiple oven ducts inside. An arc-shaped end plate is provided on the air outlet of the oven body. The multiple oven ducts are arranged side-by-side on the arc-shaped end plate, and air outlet plates are provided at the air outlets of each duct. A honeycomb-shaped air outlet is provided on the air outlet plate of the oven duct at the upper end of the arc-shaped end plate, and a cutter air outlet is provided on the air outlet plate of the oven duct at the lower end of the arc-shaped end plate. The drying process involves heating the air with a heating element, and then an external fan converts the air into wind energy, compresses it, and guides it into the ducts. The wind energy is directed to the cutter air outlet near the heating element, allowing the hot air to transfer heat to the printing film.

[0004] The cutting air outlets of the aforementioned drying oven are evenly distributed across the oven body, while the second air inlet channel of the oven duct is located on one side of the oven body. After entering the duct, the air continuously flows out from the cutting air outlets, failing to fill the entire duct before exiting. This results in uneven airflow from the cutting air outlets, with greater air volume closer to the second air inlet channel and less air volume further away. This leads to uneven heat transfer to the printing film, causing overheating and deformation in parts of the printed material or incomplete drying of the pattern, thus affecting the quality of the finished product. Utility Model Content

[0005] In view of this, the present invention provides an airflow circulating oven device for a gravure printing machine to solve at least one of the technical problems in the background art.

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

[0007] A gravure printing machine airflow circulation oven device includes: an oven bottom chamber, a heating element, an oven top chamber, a fan, a top chamber mesh cover plate, and an air circulation component;

[0008] The heating element is disposed between the bottom chamber and the top chamber of the oven;

[0009] A drying area for the film material to pass through is formed between the bottom box and the top box of the drying oven;

[0010] A wind energy storage area is formed between the top box of the oven and the heating element, and multiple fans are also provided on the top box of the oven to deliver natural wind to the wind energy storage area;

[0011] An extraction gas channel, connected to the drying area, is formed on the top of the oven near the position where the film material enters or exits.

[0012] The air circulation component is used to circulate the airflow extracted from the gas channel to the wind energy storage area.

[0013] Furthermore, the heating component includes a heating tube mounting plate, heating tubes, and a temperature sensor; the heating tube mounting plate is installed inside the top chamber of the oven, and multiple rows of heating tubes are evenly arranged on the heating tube mounting plate, and the temperature sensor is installed on the heating tube mounting plate.

[0014] Furthermore, a temperature adjustment knob for controlling the heating power of the heating element is installed on the top of the oven.

[0015] Furthermore, the air circulation component includes a fan, the circulating air inlet of the fan is connected to the air outlet of the gas extraction channel through a first connecting pipe, and the circulating air outlet of the fan is connected to two air inlets of the wind energy storage area through a second connecting pipe and a third connecting pipe, respectively.

[0016] Furthermore, a first air intake channel and a second air intake channel are formed within the wind energy storage area, which respectively connect to the two air inlets of the wind energy storage area and the inner side of the wind energy storage area.

[0017] Furthermore, it also includes an oven opening and closing control component, the two ends of which are respectively connected to the outer walls of the oven bottom box and the oven top box.

[0018] Furthermore, the oven opening and closing control assembly includes at least one cylinder, the two ends of which are respectively hinged to the color machine wall panel and the top box of the oven;

[0019] It also includes an oven track support device for vertically supporting the top box of the oven.

[0020] Furthermore, an oven support is installed on the outer wall of the oven bottom, and the oven support is connected to the color machine wall panel.

[0021] Furthermore, the inner side of the oven bottom box is provided with multiple oven rollers, and the two ends of the oven rollers have shafts that pass through the side wall of the oven bottom box and are connected to the roller bearing seats installed on the color machine wall plate.

[0022] Furthermore, a top box mesh cover is installed on the side of the top box of the oven away from the bottom box of the oven.

[0023] The beneficial effects of this utility model are as follows:

[0024] This utility model has a simple structure and is easy to use. The air circulation component introduces the airflow from the gas extraction channel into the air storage area to realize air circulation in the drying oven. At the same time, the fan increases the air pressure in the air storage area and increases the uniformity of airflow entering the drying area, thereby ensuring that the printing film is fully dried in time. This not only ensures the quality of the finished product, but also improves the printing speed of the whole machine. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a three-dimensional view of the disassembled back side of this utility model;

[0028] Figure 3 This is a three-dimensional frontal view of the disassembled part of this utility model;

[0029] Figure 4 This is a schematic diagram showing the open state of this utility model;

[0030] Figure 5 This is a cross-sectional view of the present invention.

[0031] In the figure:

[0032] 1. Oven bottom chamber; 2. Oven drum; 3. Drum bearing seat; 4. Hinge; 5. Oven support components; 6. Heating element mounting plate; 7. Oven top chamber; 8. Fan; 9. First connecting pipe; 10. Buffer box; 11. Second connecting pipe; 12. Third connecting pipe; 13. Fan; 14. Top chamber mesh cover plate; 15. Heating element; 16. Temperature sensor; 17. Cylinder; 18. Oven track support device; 19. Temperature adjustment knob; 20. Slide rail; A. Drying area; B. Energy storage area; C. First air inlet channel; D. Second air inlet channel; E. Gas extraction channel. Detailed Implementation

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments thereof. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] refer to Figure 1-5 This utility model provides an airflow circulating drying oven device for a gravure printing machine, installed on the wall panel of the color printing machine, including: a bottom oven 1, a drying roller 2, a heating element, a top oven 7, a fan 13, and an air circulation component; the heating element is disposed between the bottom oven 1 and the top oven 7; a drying area A for film material to pass through is formed between the bottom oven 1 and the top oven 7; an air energy storage area B is formed between the top oven 7 and the heating element, and the top oven 7 is also provided with a fan for air energy storage area B. Multiple fans 13 internally supply natural air; an extraction gas channel E, connected to the drying area A, is formed on the top chamber 7 of the oven near the position where the film material enters or exits; the air circulation assembly is used to circulate the airflow from the extraction gas channel E to the energy storage area B, thereby realizing air circulation within the oven device, increasing the air pressure in the energy storage area B, and increasing the uniformity of the airflow entering the drying area A, so as to ensure that the printed film is fully dried in time, which can both guarantee the quality of the finished product and improve the printing speed of the whole machine.

[0035] The heating assembly includes a heating element mounting plate 6, heating elements 15, and a temperature sensor 16. The heating element mounting plate 6 is installed inside the top chamber 7 of the oven, and multiple rows of heating elements 15 are evenly arranged on the mounting plate 6. The heating elements 15 are arranged parallel to the oven drum 2. The temperature sensor 16 is mounted on the heating element mounting plate 6. A temperature adjustment knob 19 for controlling the heating power of the heating elements 15 is installed on the top chamber 7 of the oven. The temperature sensor 16 can detect the heating temperature of the heating elements in real time and can be connected to an external controller with a display screen via a communication module. The heating temperature of the heating elements can be adjusted by the temperature adjustment knob 19 to meet the drying requirements of the printed film.

[0036] The air circulation assembly includes a fan 8. The circulating air inlet of the fan 8 is connected to the air outlet of the gas extraction channel E through a first connecting pipe 9. The circulating air outlet of the fan 8 is connected to the two air inlets of the energy storage area B through a second connecting pipe 11 and a third connecting pipe 12, respectively. A first air inlet channel C and a second air inlet channel D are also formed within the energy storage area B. The first air inlet channel C and the second air inlet channel D are respectively connected to the two air inlets of the energy storage area B and the inner side of the energy storage area B. Starting the fan 8 can draw gas from the gas channel E to the energy storage area B, increasing the air pressure in the energy storage area B and allowing the gas in the drying area A to be recycled.

[0037] In one embodiment, the first air inlet channel C and the second air inlet channel D are groove structures with one side open, facing the bottom box 1 of the oven. Of course, in the specific implementation process, the first air inlet channel C and the second air inlet channel D can also be set as a cavity structure. The side of the first air inlet channel C and the second air inlet channel D facing the bottom box 1 of the oven is provided with multiple through holes for gas flow, so as to distribute the airflow in the wind energy storage area B and realize gas circulation.

[0038] The circulating air outlet of the fan 8 is also connected to a buffer box 10. The second connecting pipe 11 and the third connecting pipe 12 are respectively installed on the buffer box 10 and connected to the inside of the buffer box 10.

[0039] For example, in one embodiment, an opening is formed on one side of the buffer box 10, which can be sealed by a sealing plate. In specific implementation, a heating element can be installed inside the buffer box 10 to achieve secondary heating of the airflow passing through the buffer box 10, so that the airflow entering the wind energy storage area B is secondary heated airflow. Alternatively, a heating element can be omitted, and the airflow can be directly used for circulation buffering. The specific choice can be made according to actual needs, and this embodiment does not make specific limitations.

[0040] In another exemplary embodiment, a heating element is installed inside the buffer box 10. The heating element is controlled by a control unit to be turned on or off. When turned on, the airflow passing through the buffer box 10 is reheated, so that the airflow entering the wind energy storage area B is reheated airflow. When turned off, the airflow directly passes through the buffer box 10 and enters the second connecting pipe 11 and the third connecting pipe 12.

[0041] For example, in one embodiment, the buffer box 10 is also provided with other pipe interfaces to facilitate the addition of ventilation pipes. An external air box is connected to the end of the ventilation pipe away from the buffer box 10. The external air box has honeycomb through holes. The external air box is placed near the material film by setting a bracket. The gas extracted by the blower 8 is guided to the material film for secondary use by the honeycomb through holes of the external air box.

[0042] This utility model also includes an oven opening and closing control assembly. Both ends of the assembly are connected to the outer walls of one side of the oven bottom chamber 1 and the oven top chamber 7, respectively. The outer walls of the other side of the oven bottom chamber 1 and the oven top chamber 7 are hinged together by hinges 4. The oven opening and closing control assembly includes at least one cylinder 17, both ends of which are hinged to the color machine wall panel and the oven top chamber 7, respectively. It also includes an oven track support device 18 for vertically supporting the oven top chamber 7. When the cylinder 17 extends, the pulley moves along the track, opening the oven top chamber 7 to facilitate film insertion. After film insertion, the cylinder 17 retracts, closing the oven top chamber 7.

[0043] The oven track support device 18 is used to effectively support the top box 7 of the oven and prevent the hinge 4 from deforming due to the weight of the top box 7. The oven track support device 18 is widely used in opening and closing equipment, so it will not be described in detail in this embodiment.

[0044] To further optimize the technical solution, an oven support 5 is installed on the outer wall of the oven bottom box 1. The oven support 5 is connected to the color machine wall panel to facilitate the overall installation of the oven device.

[0045] To further optimize the technical solution, multiple oven rollers 2 are provided on the inner side of the oven bottom box 1. The two ends of the oven roller 2 have rotating shafts that pass through the side wall of the oven bottom box 1 and are connected to the roller bearing seats 3 installed on the color machine wall plate, thereby realizing the rotation support of the oven rollers.

[0046] To further optimize the technical solution, a top box mesh cover plate 14 is installed on the side of the top box 7 away from the bottom box 1 of the oven, so as to facilitate the entry of natural wind and block the entry of large-volume materials.

[0047] This utility model has a simple structure and is easy to use. The air circulation component introduces the airflow from the gas extraction channel E into the air storage area B to realize air circulation in the drying oven. At the same time, the fan increases the air pressure in the air storage area B and increases the uniformity of the airflow entering the drying area A, thereby ensuring that the printing film is fully dried in time. This not only ensures the quality of the finished product, but also improves the printing speed of the whole machine.

[0048] The working principle of this utility model:

[0049] The drying oven has channels at the top and bottom for the printing film to pass through, while the rest of the oven is sealed. Heating element 15 provides infrared heating. Fan 13 drives airflow from the energy storage area B to the drying area A, allowing hot air to contact the printing film and dry the ink. A temperature sensor 16 is installed on the heating element mounting plate 6 to sense the temperature and stability of the drying area A. The temperature can be adjusted using the temperature control knob 19. Then, fan 8 is activated, drawing gas from the extraction gas channel E and sending it to the energy storage area B, thus achieving recycling.

[0050] When threading the film, the cylinder is activated, and the cylinder extends to open the top box 7 of the oven, making it easier to operate during the film threading process; after the film threading is completed, the cylinder 17 retracts and closes the top box 7 of the oven.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An air flow circulating oven device for a gravure printing press, characterized by, include: The oven includes a bottom chamber (1), a heating element, a top chamber (7), a fan (13), and an air circulation component; the heating element is disposed between the bottom chamber (1) and the top chamber (7). A drying area (A) for the film material to pass through is formed between the bottom box (1) and the top box (7) of the oven; A wind energy storage area (B) is formed between the top box (7) of the oven and the heating element. The top box (7) of the oven is also provided with a plurality of fans (13) that deliver natural wind to the wind energy storage area (B). An extraction gas channel (E) is formed on the top box (7) of the oven near the drying area (A) where the film material enters or exits; The air circulation component is used to circulate the airflow from the extracted gas channel (E) to the wind energy storage area (B).

2. The airflow circulating oven device for a gravure printing machine according to claim 1, characterized in that, The heating component includes a heating tube mounting plate (6), heating tubes (15) and a temperature sensor (16); the heating tube mounting plate (6) is installed inside the top chamber (7) of the oven, and multiple rows of heating tubes (15) are evenly arranged on the heating tube mounting plate (6), and the temperature sensor (16) is installed on the heating tube mounting plate (6).

3. An air flow circulating oven device for a gravure printing press according to claim 2, wherein The top box (7) of the oven is equipped with a temperature adjustment knob (19) for controlling the heating power of the heating tube (15).

4. An air flow circulating oven device for a gravure printing press according to claim 1, wherein The air circulation assembly includes a fan (8), the air inlet of the fan (8) is connected to the air outlet of the gas extraction channel (E) through a first connecting pipe (9), and the air outlet of the fan (8) is connected to the two air inlets of the wind energy storage area (B) through a second connecting pipe (11) and a third connecting pipe (12).

5. An air flow circulating oven device for a gravure printing press as claimed in claim 4, wherein The wind energy storage area (B) also includes a first air intake channel (C) and a second air intake channel (D), which are respectively connected to the two air inlets of the wind energy storage area (B) and the inner side of the wind energy storage area (B).

6. An air flow circulating oven device for a gravure printing press according to claim 1, wherein It also includes an oven opening and closing control component, the two ends of which are connected to the outer walls of the oven bottom box (1) and the oven top box (7), respectively.

7. An air flow circulating oven device for a gravure printing press according to claim 6, wherein The oven opening and closing control assembly includes at least one cylinder (17), and the two ends of the cylinder (17) are respectively hinged to the top box (7) of the oven and the color machine wall panel that supports the bottom box (1) of the oven. It also includes an oven track support device (18) for vertically supporting the top box (7) of the oven.

8. An air flow circulating oven device for a gravure printing press according to claim 1, wherein An oven support (5) is installed on the outer wall of the oven bottom box (1), and the oven support (5) is fixed to the color machine wall panel that supports the oven bottom box (1).

9. An air flow circulating oven device for a gravure printing press as claimed in claim 1, wherein Multiple oven rollers (2) are provided on the inner side of the oven bottom box (1). The two ends of the oven rollers (2) have shafts that pass through the side wall of the oven bottom box (1) and are connected to the roller bearing seat (3).

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