A drying apparatus for printed matter

Abstract

The utility model discloses a kind of air drying device for printed matter, including box, respectively opening in the inlet and outlet of box far apart end exterior, fixedly connected in the electric heater of box outside and fixedly connected in the heat pipe of electric heater output end, still include: cooling assembly, the cooling assembly includes fixedly connected in the cooling tank of box outlet one side exterior, fixedly connected in the condenser of cooling tank top, rotationally connected in the condenser pipe of cooling tank interior and the drum of sheathed in condenser pipe exterior;The utility model passes through the condensate of low temperature of opening condenser, is sent into the interior of condenser pipe, low temperature is passed on to on the drum by heat conduction sheet, when printed matter is attached on the drum, can carry out temperature reduction to printed matter, and condensate does not directly contact with drum, can reduce the condensation water of drum exterior condensation, reduce the possibility that printed matter contacts to condensate, in the cooling effect of auxiliary hair dryer improves.

Description

Technical Field

[0001] This utility model relates to the field of printing drying equipment, and in particular to a drying device for printed materials. Background Technology

[0002] Printing is a technology that involves transferring ink from original manuscripts such as text, pictures, photographs, and anti-counterfeiting materials to the surface of materials like paper, textiles, plastics, leather, PVC, and PC through processes such as plate making, inking, and pressure application. This allows for the mass reproduction of the original content. During the printing production process, whether it's traditional offset or gravure printing, or modern digital inkjet printing, the surface of the substrate (such as paper, cardboard, or plastic film) after printing usually has incompletely cured ink or coating. If this ink or coating is not dried promptly and sufficiently, it can easily cause quality problems such as smudging, sticking, and reverse printing during subsequent winding, stacking, or handling processes, leading to the scrapping of printed materials and resulting in significant material waste and economic losses.

[0003] Currently, the common drying methods in the industry are mainly divided into two categories: natural air drying and active drying. Natural air drying involves placing the printed matter on a drying rack and relying on the natural flow of air to allow the ink to cure slowly. Active drying mainly uses electric heating tubes or gas heaters to generate high-temperature hot air, which is then blown onto the surface of the printed matter by a fan to accelerate solvent evaporation or ink curing. However, hot air drying results in printed matter being dried at a higher output temperature, which is not conducive to subsequent manual operations. Utility Model Content

[0004] The purpose of this invention is to solve the problem that most existing technologies use hot air drying, which results in high output temperatures for printed materials, making subsequent manual operations difficult. Therefore, this invention proposes a drying device for printed materials.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A drying device for printed materials includes a housing, an inlet and an outlet respectively opened on both sides of the housing, an electric heater fixedly connected to the outside of the housing, and a heat-conducting pipe fixedly connected to the output end of the electric heater, and further includes: An auxiliary drying assembly includes several placement rollers rotatably connected inside the housing, an exhaust fan fixedly connected to the top wall of the housing, a filter box fixedly connected to the top of the housing, and a ventilation duct disposed outside the filter box. The exhaust fan's outlet pipe penetrates the inner wall of the housing and extends to the inner bottom wall of the filter box. The upper end of the ventilation duct is fixedly connected to the upper part of the inner wall of the filter box, and the lower end of the ventilation duct is fixedly connected to the inner wall of the housing. The cooling assembly includes a cooling box fixedly connected to the outside of the discharge port side of the box body, a condenser fixedly connected to the top of the cooling box, a condenser pipe rotatably connected inside the cooling box, and a roller sleeved on the outside of the condenser pipe.

[0006] As a preferred technical solution of this application, both the inlet and outlet are rotatably connected to rotating rollers, and the ends of the rotating rollers on both sides are rotatably connected to heat-conducting plates.

[0007] As a preferred technical solution of this application, the heat-conducting pipe is fixedly connected inside the box, and the heat-conducting pipe is symmetrically arranged on the upper and lower sides of the placement roller, and the lower end of the ventilation duct is arranged on the left and right sides of one of the placement rollers.

[0008] As a preferred technical solution of this application, the filter box is provided with multiple filter layers inside, the inlet end of the ventilation duct is located on the upper side of the filter layer, and a fan is fixedly connected to the inlet end of the ventilation duct.

[0009] As a preferred technical solution of this application, a blower is fixedly connected to the inner top wall of the cooling box, and a number of heat-conducting plates are fixedly connected to the outside of the condenser tube. The outside of the heat-conducting plates is rotatably connected to the inner wall of the drum.

[0010] As a preferred technical solution of this application, a sleeve is fixedly connected to the inner top wall of the discharge port, a spring is fixedly connected inside the sleeve, a connecting rod is fixedly connected to the end of the spring away from the inner top wall of the sleeve, and an auxiliary roller shaft is rotatably connected to the lower end of the connecting rod.

[0011] As a preferred technical solution of this application, a plurality of sleeves and connecting rods are provided, and the sleeves and connecting rods are symmetrically arranged on both sides inside the discharge port, with the connecting rods on both sides respectively arranged at both ends of the auxiliary roller shaft.

[0012] Compared with the prior art, the present invention provides a drying device for printed materials, which has the following beneficial effects: 1. Through the cooling components, after the printed materials are dried, they enter the cooling chamber. The condenser is turned on to send the low-temperature condensate into the condenser tube. The low temperature is transferred to the roller through the heat conduction plate. When the printed materials are attached to the roller, the printed materials can be cooled. The condensate does not come into direct contact with the roller. It is transferred through the condenser tube and heat conduction plate, which can reduce the condensation of water on the outside of the roller and reduce the possibility of the printed materials coming into contact with the condensate. It also helps to improve the cooling effect with the auxiliary blower.

[0013] 2. By using a filter box and an exhaust fan to draw out the gas inside the box, the gas emitted after the printed materials are dried can be removed. The gas is then filtered by the filter box, and the filtered hot air is blown onto the workpiece by a fan. This improves the air circulation inside the box and enhances the drying environment. In addition, the heat pipe can dry the top and bottom sides of the workpiece simultaneously, improving the drying effect. Attached Figure Description

[0014] Figure 1 This is a perspective view of a drying device for printed materials proposed in this utility model; Figure 2 A cross-sectional view of the housing of a drying device for printed materials proposed in this utility model; Figure 3 A cross-sectional view of the filter box of a drying device for printed materials proposed in this utility model; Figure 4 This is a schematic diagram of a cooling box for a drying device for printed materials according to the present invention. Figure 5 This is a schematic diagram of an auxiliary roller for a drying device for printed materials according to the present invention. Figure 6 This is a schematic diagram of a rotating roller shaft for an air-drying device for printed materials proposed in this utility model.

[0015] In the picture: 1. Housing; 101. Feed inlet; 102. Discharge outlet; 103. Rotating roller; 104. Placement roller; 105. Heat-conducting plate; 2. Electric heater; 201. Heat-conducting pipe; 3. Filter box; 301. Exhaust fan; 302. Filter layer; 303. Ventilation pipe; 304. Fan; 4. Cooling box; 401. Condenser; 402. Condenser pipe; 403. Heat-conducting plate; 404. Roller; 405. Blower; 5. Auxiliary roller; 501. Sleeve; 502. Spring; 503. Connecting rod. Detailed Implementation

[0016] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0017] Reference Figure 1-4A drying device for printed materials includes a housing 1, an inlet 101 and an outlet 102 respectively opened on both sides of the housing 1, an electric heater 2 fixedly connected to the outside of the housing 1, and a heat-conducting pipe 201 fixedly connected to the output end of the electric heater 2. It also includes an auxiliary drying assembly and a cooling assembly. The auxiliary drying assembly includes a plurality of placement rollers 104 rotatably connected inside the housing 1, an exhaust fan 301 fixedly connected to the top wall inside the housing 1, a filter box 3 fixedly connected to the top of the housing 1, and a filter disposed outside the filter box 3. The ventilation duct 303 and the exhaust pipe of the exhaust fan 301 pass through the inner wall of the box 1 and extend to the inner bottom wall of the filter box 3. The upper end of the ventilation duct 303 is fixedly connected to the upper part of the inner wall of the filter box 3, and the lower end of the ventilation duct 303 is fixedly connected to the inner wall of the box 1. The cooling assembly includes a cooling box 4 fixedly connected to the outside of the discharge port 102 of the box 1, a condenser 401 fixedly connected to the top of the cooling box 4, a condenser pipe 402 rotatably connected to the inside of the cooling box 4, and a roller 404 sleeved on the outside of the condenser pipe 402.

[0018] The electric heater 2 provides stable basic heat to the chamber 1 through the heat pipe 201 to dry the printed matter entering from the feed port 101. At the same time, the exhaust fan 301 is activated to draw the humid air containing solvent volatiles from the chamber 1 into the filter box 3 for purification. The filtered clean air is then sent back into the chamber 1 through the ventilation duct 303, thus forming a closed circulating airflow in the chamber 1. This accelerates the curing speed of the ink on the surface of the printed matter, improves the drying efficiency, reduces heat loss, achieves energy saving and consumption reduction, and reduces the risk of damage to the printing quality by external pollutants. The dried printed matter then enters the cooling component through the discharge port 102. The condenser 401 at the top of the cooling box 4 cools the cooling medium in the condenser pipe 402. The printed matter entering the cooling box 4 will adhere to the outside of the roller 404, providing a low-temperature cooling contact surface for the printed matter, so that the printed matter can be cooled and set evenly and quickly during the process of leaving the cooling box 4.

[0019] Reference Figure 2 , Figure 3 and Figure 4 A drying device for printed materials is further provided, wherein rotating rollers 103 are rotatably connected inside the inlet 101 and the outlet 102, and heat-conducting plates 105 are rotatably connected to the ends of the rotating rollers 103 on both sides; heat-conducting pipes 201 are fixedly connected inside the housing 1, and the heat-conducting pipes 201 are symmetrically arranged on the upper and lower sides of the placement rollers 104; the lower end of the ventilation duct 303 is arranged on the left and right sides of one of the placement rollers 104; the filter box 3 is provided with multiple layers of filter 302 inside, the inlet end of the ventilation duct 303 is located on the upper side of the filter layer 302, and a fan 304 is fixedly connected to the inlet end of the ventilation duct 303.

[0020] The rotating rollers 103 located at the inlet 101 and outlet 102 reduce the frictional resistance of the printed matter during transport, ensuring smooth and stable transport and effectively reducing scratches and paper jams on the surface of the printed matter. The rotating rollers 103 at the outlet 102 and inlet 101 are connected by a heat-conducting plate 105, allowing heat carried from the inside of the box 1 by the printed matter to be absorbed when it comes into contact with the rotating rollers 103 at the outlet 102. Since the rotating rollers 103 at the inlet 101 are at a lower temperature, the collected heat is transferred to the rotating rollers 103 at the inlet 101 via the heat-conducting plate 105, providing preheating for the low-temperature printed matter and initiating drying preparation in advance. This improves thermal energy utilization and reduces the energy consumption of the electric heater 2. The heat pipes 201 are symmetrically arranged on the upper and lower sides of the rollers 104, enabling uniform and efficient heating and drying of both sides of the printed matter simultaneously, reducing curling caused by uneven heating stress on one side. To mitigate the risk of shape defects and ensure product flatness, the lower outlet of the ventilation duct 303 is located on the left and right sides of the roller 104, working in conjunction with the vertical heat pipe 201 to form a three-dimensional interwoven circulating air duct inside the housing 1. This makes the flow of hot air more uniform, improving the uniformity and overall efficiency of drying. The multi-layer filter 302 inside the filter box 3 can adsorb and intercept ink particles and volatile organic compounds in the air in stages, efficiently purifying the circulating air and preventing contaminants from re-adhering to the surface of the printed materials and causing defects. The fan 304 installed at the upper end of the ventilation duct 303 actively provides a powerful airflow driving force, working in conjunction with the exhaust fan 301 to enhance the airflow speed and wind pressure inside the housing 1, thereby further enhancing the drying effect. It should be noted that the materials of the filter layer 302 include, but are not limited to, non-woven fabric, synthetic fiber, activated carbon filter, glass fiber paper, etc., mainly used to remove gaseous pollutants (odors, harmful gases) in the air.

[0021] The cooling box 4 has a blower 405 fixedly connected to the inner top wall, and a number of heat-conducting plates 403 fixedly connected to the outside of the condenser pipe 402. The outside of the heat-conducting plates 403 is rotatably connected to the inner wall of the roller 404.

[0022] The blower 405 continuously delivers airflow into the cooling chamber 4, breaking the heat insulation layer formed by hot air on the surface of the printed matter, thereby significantly accelerating the overall heat dissipation inside the chamber. Several heat-conducting plates 403 fixedly connected to the outside of the condenser pipe 402 increase the contact surface area between the condenser pipe 402 and the roller 404, allowing the cooling energy generated by the condenser 401 to be released more quickly and fully to the outer surface of the roller 404 and the space of the cooling chamber 4 through the condenser pipe 402 and the heat-conducting plates 403, improving heat exchange efficiency and ensuring that the roller 404 does not directly contact the cooling medium, thereby effectively reducing condensation on the outer surface of the roller 404 due to overcooling, preventing the printed matter from being wetted by condensation, and ensuring the final drying effect. When the still warm printed matter comes into contact with the low-temperature surface of the roller 404, the heat will be quickly and evenly conducted away, achieving rapid and uniform cooling and shaping, reducing the deformation, warping, or sticking of the printed matter that may occur due to uneven cooling or slow cooling speed.

[0023] Reference Figure 2 and Figure 5 A drying device for printed materials is further provided, wherein a sleeve 501 is fixedly connected to the inner top wall of the discharge port 102, a spring 502 is fixedly connected inside the sleeve 501, a connecting rod 503 is fixedly connected to the end of the spring 502 away from the inner top wall of the sleeve 501, and an auxiliary roller shaft 5 is rotatably connected to the lower end of the connecting rod 503; a plurality of sleeves 501 and connecting rods 503 are provided, and the sleeves 501 and connecting rods 503 are symmetrically arranged on both sides inside the discharge port 102, and the connecting rods 503 on both sides are respectively arranged at both ends of the auxiliary roller shaft 5.

[0024] The sleeve 501, along with the internal spring 502 and connecting rod 503, enables the auxiliary roller 5 at the lower end of the connecting rod 503 to automatically float up and down when printed materials of different thicknesses pass through. The spring 502 continuously provides stable and gentle downward pressure, thereby ensuring that the auxiliary roller 5 is always tightly and closely attached to the surface of the printed material, ensuring a smooth discharge process. Several sleeves 501 and connecting rods 503 symmetrically arranged on both sides inside the discharge port 102 provide independent and balanced support and pressure for both ends of the auxiliary roller 5. This allows the auxiliary roller 5 to always maintain a horizontal state even during long-term operation or when subjected to uneven loads, avoiding problems such as roller tilting, skewed printing, or wrinkling that may be caused by uneven force on one side.

[0025] Specifically, in use, the printed matter is first placed inside the chamber 1. Then, the electric heater 2 is turned on to provide stable basic heat to the chamber 1 through the heat conduction pipe 201 to dry the printed matter. At the same time, the exhaust fan 301 is turned on to draw the humid air containing solvent volatiles from the chamber 1 into the filter box 3 for purification. The filtered clean air is then drawn back into the chamber 1 by the fan 304 into the ventilation duct 303, thus forming a closed circulating airflow inside the chamber 1, which accelerates the curing speed of the ink on the surface of the printed matter and improves the drying efficiency. The dried printed matter will enter the cooling chamber 4. The condenser 401 is turned on to cool the cooling medium in the condenser pipe 402. The printed matter entering the cooling chamber 4 will adhere to the outside of the roller 404. Then, the cooling medium will transfer the low temperature to the outside of the roller 404 through the heat conduction plate 403, thereby cooling the printed matter and achieving rapid and uniform cooling and shaping.

[0026] 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 device for printed matter, comprising a housing (1), an inlet (101) and an outlet (102) respectively opened on both sides of the housing (1), an electric heater (2) fixedly connected to the outside of the housing (1), and a heat-conducting pipe (201) fixedly connected to the output end of the electric heater (2), characterized in that, Also includes: The auxiliary air drying assembly includes several placement rollers (104) rotatably connected inside the housing (1), an exhaust fan (301) fixedly connected to the inner top wall of the housing (1), a filter box (3) fixedly connected to the top of the housing (1), and a ventilation duct (303) set outside the filter box (3). The exhaust pipe of the exhaust fan (301) passes through the inner wall of the housing (1) and extends to the inner bottom wall of the filter box (3). The upper end of the ventilation duct (303) is fixedly connected to the upper part of the inner wall of the filter box (3), and the lower end of the ventilation duct (303) is fixedly connected to the inner wall of the housing (1). The cooling assembly includes a cooling box (4) fixedly connected to the outside of the outlet (102) of the box body (1), a condenser (401) fixedly connected to the top of the cooling box (4), a condenser pipe (402) rotatably connected inside the cooling box (4), and a roller (404) sleeved on the outside of the condenser pipe (402).

2. The air-drying device for printed matter according to claim 1, characterized in that, The feed inlet (101) and the discharge outlet (102) are both rotatably connected to rotating rollers (103), and the ends of the rotating rollers (103) on both sides are rotatably connected to heat-conducting plates (105).

3. The air-drying device for printed matter according to claim 1, characterized in that, The heat pipe (201) is fixedly connected inside the box (1), and the heat pipe (201) is symmetrically arranged on the upper and lower sides of the placement roller (104). The lower end of the ventilation pipe (303) is arranged on the left and right sides of one of the placement rollers (104).

4. A drying device for printed matter according to claim 1, characterized in that, The filter box (3) is provided with multiple filter layers (302) inside. The inlet end of the ventilation duct (303) is located on the upper side of the filter layer (302). A fan (304) is fixedly connected to the inlet end of the ventilation duct (303).

5. A drying device for printed matter according to claim 1, characterized in that, A blower (405) is fixedly connected to the inner top wall of the cooling box (4), and several heat-conducting plates (403) are fixedly connected to the outside of the condenser tube (402). The outside of the heat-conducting plates (403) is rotatably connected to the inner wall of the roller (404).

6. A drying device for printed matter according to claim 1, characterized in that, A sleeve (501) is fixedly connected to the inner top wall of the discharge port (102). A spring (502) is fixedly connected inside the sleeve (501). A connecting rod (503) is fixedly connected to one end of the spring (502) away from the inner top wall of the sleeve (501). An auxiliary roller shaft (5) is rotatably connected to the lower end of the connecting rod (503).

7. A drying device for printed matter according to claim 6, characterized in that, Several sleeves (501) and connecting rods (503) are provided, and the sleeves (501) and connecting rods (503) are symmetrically arranged on both sides of the inside of the discharge port (102). The connecting rods (503) on both sides are respectively arranged at both ends of the auxiliary roller shaft (5).

Images