A printing roller cooling mechanism for a printing apparatus

Abstract

This utility model relates to a cooling mechanism for printing rollers in printing equipment, belonging to the technical field of cooling mechanisms. It includes two mounting frames, a printing roller body, and a cooling box. The upper surface of the cooling box is equipped with a cooling mechanism. The interiors of the mounting frames on both sides are rotatably connected to fixed pipes via bearings. The printing roller body is connected to the opposite side of the fixed pipes on both sides. The cooling mechanism includes a liquid nitrogen tank fixed to the upper surface of the cooling box. A cooling pipe is fixed to the back wall of the inner cavity of the cooling box, and one end of the cooling pipe is connected to a conveying pipe. This cooling mechanism for printing rollers in printing equipment utilizes the low-temperature properties of liquid nitrogen to rapidly reduce the temperature of the cooling water, thereby achieving rapid cooling of the printing roller body. The water-cooling circulation system can operate continuously, and the cooling water is circulated within the system, improving cooling efficiency. The printing roller body is driven by a motor to ensure the stability and continuity of the printing process.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling mechanisms, specifically a cooling mechanism for printing rollers in printing equipment. Background Technology

[0002] Printing is a technology that uses processes such as plate making, inking, and pressure application to transfer ink to the surface of materials such as paper, textiles, plastics, and leather to reproduce the content of the original manuscript in batches. Printing is the process of transferring approved printing plates to the substrate through printing machinery and special inks. The printing roller is an important component of the printing press. After long-term operation, the printing roller will generate a lot of heat, which will affect the printing quality and accelerate the aging of the components. Therefore, it is necessary to dissipate heat from the printing roller.

[0003] For example, CN220500227U discloses a cooling mechanism for printing rollers in printing equipment, relating to the field of printing equipment technology. The utility model includes a roller body with a cooling assembly on it. A connecting shaft is located at the end of the roller body and is movably connected to the end of the roller body. The cooling assembly includes a cooling box, a cooling pipe, an air pump, and a guide plate. The cooling box is located above the roller body, and the cooling pipe is fixedly located inside the cooling box. The outlet of the air pump is connected to the interior of the cooling pipe through a connecting pipe. A cooling chamber is formed inside the roller body. The end of the cooling pipe away from the pump body is connected to the interior of the cooling chamber through an air guide pipe. The guide plate is fixedly connected to the inner wall of the cooling chamber. A vent hole is formed on the side of the roller body away from the guide pipe. This utility model is a cooling mechanism for printing rollers in printing equipment. By setting up the cooling assembly, the heat dissipation efficiency of the roller body can be improved, preventing heat accumulation inside the roller body and thus avoiding damage.

[0004] Although the aforementioned patent can improve the heat dissipation efficiency of the roller by setting up a cooling component and avoid heat accumulation in the roller body, which would cause damage, the prior art of the patent uses cold air to cool the printing roller, which is generally inefficient and thus reduces its practicality. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cooling mechanism for printing rollers in printing equipment, which has advantages such as improved cooling efficiency. It solves the problem that the existing technology of cooling printing rollers with cold air has generally low cooling efficiency, thus reducing practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A printing roller cooling mechanism for printing equipment includes two mounting frames, a printing roller body and a cooling box. The upper surface of the cooling box is provided with a cooling mechanism. The interior of the mounting frames on both the left and right sides is rotatably connected to a fixed tube via bearings. The printing roller body is connected to the opposite side of the fixed tubes on the left and right sides.

[0008] The cooling mechanism includes a liquid nitrogen tank fixed to the upper surface of the cooling box, a cooling pipe fixed to the back wall of the inner cavity of the cooling box, one end of the cooling pipe connected to a delivery pipe, one end of the delivery pipe passing through the cooling box and rotatably connected to the left side of the left fixed pipe through a sealed bearing, a water tank fixed to the right side of the cooling box, and a liquid outlet plate fixed to the back wall of the inner cavity of the cooling box.

[0009] The cooling mechanism also includes a water pump fixed to the upper surface of the water tank. A return pipe is connected to the right side of the water tank. The end of the return pipe away from the water tank is rotatably connected to the right side of the right fixed pipe through a sealed bearing. The water inlet of the water pump passes through the water tank through a pipe and extends into the interior. The water outlet of the water pump passes through the cooling box through a pipe and is connected to the upper side of the right side of the cooling pipe. A conveying structure is connected to the lower side of the right side of the liquid nitrogen tank. The conveying structure includes a first connecting pipe. A first solenoid valve is connected to the outer side of the bottom end of the first connecting pipe. A second connecting pipe is connected to the interior of the first solenoid valve. The bottom end of the second connecting pipe passes through the cooling box and is connected to the upper surface of the liquid outlet plate.

[0010] Furthermore, a motor is fixed to the left side of the mounting bracket on the left side, a first gear is fixed to the outside of the motor output shaft, a second gear meshes with the outside of the first gear, and the second gear is fixed to the outside of the left fixing tube.

[0011] Furthermore, a visual scale is provided on the front of the liquid nitrogen tank.

[0012] Furthermore, a first vent valve is provided on the upper surface of the liquid nitrogen tank, and an input structure is connected to the left side of the upper surface of the liquid nitrogen tank.

[0013] Furthermore, the input structure includes a first input tube, with a second solenoid valve connected to the outer side of the top end of the first input tube, and the second input tube connected to the interior of the second solenoid valve.

[0014] Furthermore, the liquid outlet plate includes a hollow plate, and the front side of the hollow plate is connected to a plurality of liquid outlet holes.

[0015] Furthermore, the left side of the upper surface of the cooling box is connected to a second exhaust valve via a pipe, and the output end of the second exhaust valve is connected to a discharge pipe.

[0016] Furthermore, both the cooling box and the liquid nitrogen tank are equipped with temperature gauges and pressure gauges on their front sides.

[0017] Compared with the prior art, the present invention provides a cooling mechanism for printing rollers in printing equipment, which has the following beneficial effects:

[0018] The printing equipment uses a printing roller cooling mechanism that utilizes the low-temperature properties of liquid nitrogen to rapidly reduce the temperature of the cooling water, thereby achieving rapid cooling of the printing roller. The water cooling circulation system can operate continuously, and the cooling water is circulated within the system, improving cooling efficiency. The printing roller is driven to rotate by a motor, ensuring the stability and continuity of the printing process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection structure between the first gear and the second gear of this utility model;

[0021] Figure 3 This is a schematic diagram of the cooling mechanism of this utility model.

[0022] In the diagram: 1. Mounting frame, 2. Printing roller body, 3. Cooling box, 4. Cooling mechanism, 401. Liquid nitrogen tank, 402. Cooling pipe, 403. Conveying pipe, 404. Water tank, 405. Liquid outlet plate, 406. Water pump, 407. Return pipe, 408. Conveying structure, 5. Fixed pipe, 6. Motor, 7. First gear, 8. Second gear, 9. Input structure. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 2 The printing roller cooling mechanism for printing equipment in this embodiment includes two mounting frames 1, a printing roller body 2 and a cooling box 3. The upper surface of the cooling box 3 is provided with a cooling mechanism 4. The interior of the mounting frames 1 on both sides is rotatably connected to a fixed tube 5 through a bearing. The printing roller body 2 is connected to the opposite side of the fixed tubes 5 on both sides. The interior of the printing roller body 2 is provided with a cavity.

[0025] In this embodiment, a motor 6 is fixed on the left side of the left mounting bracket 1, a first gear 7 is fixed on the outside of the output shaft of the motor 6, a second gear 8 meshes with the outside of the first gear 7, the second gear 8 is fixed on the outside of the left fixing tube 5, and the left side of the upper surface of the cooling box 3 is connected to the second exhaust valve through a pipe, and the output end of the second exhaust valve is connected to the discharge pipe.

[0026] Specifically, the second exhaust valve is used to discharge excess gas inside the cooling box 3 to prevent excessive pressure. When the internal pressure reaches a certain value, the exhaust valve will automatically open to release the gas. The exhaust pipe can be extended to the outside for discharge.

[0027] Please see Figure 3 In this embodiment, the cooling mechanism 4 includes a liquid nitrogen tank 401 fixed on the upper surface of the cooling box 3, a cooling pipe 402 fixed on the back wall of the inner cavity of the cooling box 3, one end of the cooling pipe 402 connected to a delivery pipe 403, one end of the delivery pipe 403 passing through the cooling box 3 and rotatably connected to the left side of the left fixed pipe 5 through a sealed bearing, a water tank 404 fixed on the right side of the cooling box 3, and a liquid outlet plate 405 fixed on the back wall of the inner cavity of the cooling box 3.

[0028] Specifically, the cooling mechanism 4 also includes a water pump 406 fixed on the upper surface of the water tank 404. A return pipe 407 is connected to the right side of the water tank 404. The end of the return pipe 407 away from the water tank 404 is rotatably connected to the right side of the right fixed pipe 5 through a sealed bearing. The water inlet end of the water pump 406 passes through the water tank 404 through a pipe and extends into the interior. The water outlet end of the water pump 406 passes through the cooling box 3 through a pipe and is connected to the upper side of the right side of the cooling pipe 402. A conveying structure 408 is connected to the lower side of the right side of the liquid nitrogen tank 401. A water inlet pipe is connected to the right side of the upper surface of the water tank 404. A sealing cap is threaded on the outer side of the top of the water inlet pipe. A first drain pipe is connected to the lower side of the right side of the water tank 404. A third solenoid valve is connected to the outer side of the right side of the first drain pipe. A second drain pipe is connected to the interior of the third solenoid valve.

[0029] Specifically, by turning on the water pump 406, the water inside the water tank 404 can be pumped into the printing roller body 2 through the pipe, cooling pipe 402, delivery pipe 403 and left fixed pipe 5. Then, it flows back into the water tank 404 through the return pipe 407 for circulation cooling. Although liquid nitrogen is expensive, the amount of liquid nitrogen used can be reduced and the operating cost can be lowered by the assistance of water cooling circulation. Water has high thermal conductivity and its heat dissipation efficiency is much higher than that of air cooling, which can better remove heat.

[0030] Specifically, the conveying structure 408 includes a first connecting pipe, a first solenoid valve connected to the outer side of the bottom end of the first connecting pipe, a second connecting pipe connected inside the first solenoid valve, the bottom end of the second connecting pipe penetrating the cooling tank 3 and connecting to the upper surface of the liquid outlet plate 405, a visual scale provided on the front of the liquid nitrogen tank 401, and a first vent valve provided on the upper surface of the liquid nitrogen tank 401. The first vent valve prevents excessive pressure. During the operation of the liquid nitrogen tank 401, when the internal pressure reaches a certain value, the vent valve will automatically open to release gas. The left side of the upper surface of 01 is connected to an input structure 9, which includes a first input pipe. The outer side of the top of the first input pipe is connected to a second solenoid valve, and the inside of the second solenoid valve is connected to the second input pipe. The liquid outlet plate 405 includes a hollow plate, and the front of the hollow plate is connected to several liquid outlet holes. The front of both the cooling box 3 and the liquid nitrogen tank 401 is equipped with a temperature gauge and a pressure gauge. During use, the pressure gauge of the liquid nitrogen tank 401 should be inspected regularly to ensure that the pressure is within the safe range. Liquid nitrogen can be input into the liquid nitrogen tank 401 through the input structure 9.

[0031] It should be noted that during cooling, the first solenoid valve in the conveying structure 408 can be opened, and then the liquid nitrogen inside the liquid nitrogen tank 401 flows into the liquid outlet plate 405, and then enters the interior of the cooling box 3. The liquid nitrogen vaporizes in the cooling box 3, absorbing a large amount of heat, thereby reducing the temperature of the water in the cooling pipe 402, and then cooling the water inside the cooling pipe 402. After cooling, the water flows into the interior of the printing roller body 2 to cool the printing roller body 2. The cooling speed is fast and the temperature reduction effect is significant. Water cooling can improve the cooling efficiency. By starting the motor 6, the first gear 7 and the second gear 8 can be driven to rotate. Then, through the fixed pipes 5 on the left and right sides, the printing roller body 2 can be driven to rotate and print.

[0032] The working principle of the above embodiments is as follows:

[0033] In use, by turning on the water pump 406, water from the water tank 404 is pumped into the printing roller 2 through pipes, cooling pipes 402, conveying pipes 403, and left-side fixed pipes 5. Then, it flows back into the water tank 404 through the return pipe 407 for circulating cooling. During cooling, the first solenoid valve in the conveying structure 408 is opened, and liquid nitrogen from the liquid nitrogen tank 401 flows into the liquid outlet plate 405. Then, it enters the cooling box 3, where the liquid nitrogen vaporizes and absorbs a large amount of heat, thereby lowering the temperature of the water in the cooling pipes 402 and cooling the water inside the cooling pipes 402. The cooled water then flows into the printing roller 2 to cool the printing roller 2. The cooling speed is fast and the cooling effect is significant. Water cooling can improve the cooling efficiency. By starting the motor 6, the first gear 7 and the second gear 8 can be driven to rotate. Then, through the left and right fixed pipes 5, the printing roller 2 can be rotated and printing can be performed.

[0034] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A printing roller cooling mechanism for a printing apparatus, comprising two mounting frames (1), a printing roller body (2) and a cooling box (3), characterized in that: The upper surface of the cooling box (3) is provided with a cooling mechanism (4), and the interior of the mounting brackets (1) on both the left and right sides is rotatably connected to a fixed tube (5) via bearings. The printing roller body (2) is connected to the opposite side of the fixed tubes (5) on both the left and right sides. The cooling mechanism (4) includes a liquid nitrogen tank (401) fixed on the upper surface of the cooling box (3), a cooling pipe (402) fixed on the back wall of the inner cavity of the cooling box (3), one end of the cooling pipe (402) being connected to a delivery pipe (403), one end of the delivery pipe (403) penetrating the cooling box (3) and being rotatably connected to the left side of the left fixed pipe (5) through a sealed bearing, a water tank (404) fixed on the right side of the cooling box (3), and a liquid outlet plate (405) fixed on the back wall of the inner cavity of the cooling box (3). The cooling mechanism (4) also includes a water pump (406) fixed on the upper surface of the water tank (404). A return pipe (407) is connected to the right side of the water tank (404). The end of the return pipe (407) away from the water tank (404) is rotatably connected to the right side of the right fixed pipe (5) through a sealed bearing. The water inlet end of the water pump (406) passes through the water tank (404) through a pipe and extends into the interior. The water outlet end of the water pump (406) passes through the cooling box (3) through a pipe and is connected to the upper side of the right side of the cooling pipe (402). A conveying structure (408) is connected to the lower side of the right side of the liquid nitrogen tank (401). The conveying structure (408) includes a first connecting pipe. A first electromagnetic valve is connected to the outer side of the bottom end of the first connecting pipe. A second connecting pipe is connected to the interior of the first electromagnetic valve. The bottom end of the second connecting pipe passes through the cooling box (3) and is connected to the upper surface of the liquid outlet plate (405).

2. The printing roller cooling mechanism for printing equipment according to claim 1, characterized in that: A motor (6) is fixed on the left side of the mounting bracket (1) on the left side. A first gear (7) is fixed on the outside of the output shaft of the motor (6). A second gear (8) meshes with the outside of the first gear (7). The second gear (8) is fixed on the outside of the left fixed tube (5).

3. The printing roller cooling mechanism for printing equipment according to claim 1, characterized in that: The liquid nitrogen tank (401) has a visual scale on its front.

4. The printing roller cooling mechanism for printing equipment according to claim 1, characterized in that: The liquid nitrogen tank (401) is provided with a first exhaust valve on its upper surface, and an input structure (9) is connected to the left side of the upper surface of the liquid nitrogen tank (401).

5. A printing roller cooling mechanism for printing equipment according to claim 4, characterized in that: The input structure (9) includes a first input tube, with a second electromagnetic valve connected to the outer side of the top of the first input tube, and the second input tube connected to the inside of the second electromagnetic valve.

6. A printing roller cooling mechanism for printing equipment according to claim 1, characterized in that: The liquid outlet plate (405) includes a hollow plate, and the front side of the hollow plate is connected with a plurality of liquid outlet holes.

7. A printing roller cooling mechanism for printing equipment according to claim 1, characterized in that: The left side of the upper surface of the cooling box (3) is connected to the second exhaust valve through a pipe, and the output end of the second exhaust valve is connected to the discharge pipe.

8. A printing roller cooling mechanism for printing equipment according to claim 1, characterized in that: The front of both the cooling box (3) and the liquid nitrogen tank (401) is equipped with a temperature gauge and a pressure gauge.

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