A printing roller for a printing apparatus

Abstract

The utility model discloses a printing roller for printing equipment, including printing roller main part, its characterized in that: the cavity is seted up in printing roller main part, the left end and right end of printing roller main part are provided with liquid inlet pipe and liquid outlet pipe respectively, liquid inlet pipe and liquid outlet pipe are installed on printing roller main body through the symmetry and are provided with two groups of mounting structure, the utility model discloses through the equal interval arrangement of multiple heat dissipation structure in the cavity of printing roller main body, and each heat dissipation structure includes heat conduction mounting ring and the heat dissipation fin of circumferential distribution, and the heat transfer area between cooling liquid and roll body has been increased significantly, and heat conduction to heat conduction mounting ring through roll wall, then diffuses to multiple heat dissipation fins again, and fully contact with the cooling liquid of flowing, and the heat conduction efficiency has been greatly promoted, and the uniform heat dissipation along the full length direction of roll body is ensured to the equal interval arrangement heat dissipation structure, and the local temperature rise is avoided effectively, and the stability of printing quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of printing roller technology, and more specifically, to a printing roller for printing equipment. Background Technology

[0002] In printing equipment, the printing roller is a key component for ink transfer and image reproduction. During high-speed continuous printing, there is constant friction between the printing roller and the substrate (such as paper, film, etc.), and it is also affected by external heat sources (such as drying equipment, infrared heating, etc.), causing the roller temperature to rise continuously. Excessive temperature can not only cause problems such as deformation of the printing material, misregistration, and abnormal ink drying, but may also lead to a decline in the performance of the roller material, affecting printing quality and equipment lifespan.

[0003] In existing technologies, internal cooling is usually used to dissipate heat from printing rollers. This involves setting up coolant channels inside the printing roller and circulating the coolant to remove heat. However, traditional cooling structures are mostly simple cavities or straight-through channels with limited heat dissipation area and low heat exchange efficiency. This makes it difficult to achieve uniform cooling along the roller axis and can easily lead to localized overheating. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a printing roller for printing equipment. It solves the problem that the existing technology usually uses internal cooling to dissipate heat from the printing roller, that is, setting up a coolant channel inside the printing roller and carrying away heat through coolant circulation. However, traditional cooling structures are mostly simple cavities or straight-through channels, with limited heat dissipation area and low heat exchange efficiency. It is difficult to achieve uniform cooling along the roller axis and is prone to local overheating.

[0005] To achieve the above objectives, this utility model provides a printing roller for printing equipment, comprising a printing roller body, characterized in that: a cavity is provided in the printing roller body, an inlet pipe and an outlet pipe are respectively provided at the left and right ends of the printing roller body, the inlet pipe and the outlet pipe are mounted on the printing roller body by two sets of mounting structures symmetrically arranged, and multiple sets of heat dissipation structures are arranged at equal intervals along the length direction of the printing roller body in the cavity.

[0006] Preferably, each heat dissipation structure includes a heat-conducting mounting ring fixedly installed on the inner wall of the cavity, and each heat-conducting mounting ring is fixedly connected with multiple heat dissipation fins at equal intervals in the circumferential direction.

[0007] Preferably, each set of mounting structures includes a connecting pipe and a mounting head. Each connecting pipe is fixedly connected to a threaded connector. Threaded mounting holes are symmetrically opened at both ends of the printing roller body. Each threaded connector is threaded into the threaded mounting hole. Two mounting heads are respectively connected to the inlet pipe and the outlet pipe. Each connecting pipe has a connecting hole. Each mounting head extends into the connecting pipe through the connecting hole. A connecting ring plate is fixedly connected to the outer wall of one section of the connecting pipe. Each connecting ring plate is rotatably connected to the inner wall of the connecting pipe. A ring sleeve is fixedly connected to the outer wall of the outer section of the mounting head. Each ring sleeve is rotatably connected to the connecting pipe.

[0008] Preferably, each of the connecting ring plates is fixedly connected to a first sealing ring, and each of the connecting pipes has a first groove on its inner wall that matches the first sealing ring.

[0009] Preferably, each of the ring sleeves is fixedly connected with a second sealing ring, and a second groove matching the second sealing ring is provided on the outer wall of each of the connecting tubes.

[0010] Preferably, the device also includes a mounting bracket, on which two ear plates are symmetrically fixedly connected. Each ear plate has a round opening, and each connecting tube passes through the round opening. Each connecting tube is fixedly connected with a retaining ring, and the two retaining rings abut against the opposite sides of the two ear plates.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By setting multiple sets of heat dissipation structures at equal intervals in the cavity of the printing roller body, each set of heat dissipation structures includes a heat-conducting mounting ring and circumferentially distributed heat dissipation fins, the heat exchange area between the coolant and the roller body is significantly increased. Heat is conducted through the roller wall to the heat-conducting mounting ring, and then quickly diffuses to multiple heat dissipation fins, making full contact with the flowing coolant, which greatly improves the heat conduction efficiency. The heat dissipation structures arranged at equal intervals ensure uniform heat dissipation along the entire length of the roller body, effectively avoiding local temperature rise and ensuring the stability of printing quality.

[0012] 2. The inlet and outlet pipes are connected to the main body of the printing roller through a special installation structure. This structure adopts a double rotating connection design consisting of a connecting pipe, an installation head, a connecting ring plate, and a ring sleeve. With bearing support, the installation head can rotate freely relative to the connecting pipe, thereby achieving smooth fluid transmission between the stationary external pipeline and the rotating printing roller. The rotational resistance is small and the operation is stable. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of this utility model; Figure 2 is a cross-sectional view of the main body of the printing roller in this utility model; Figure 3 is a schematic diagram of the installation structure in this utility model; Figure 4 is a structural schematic diagram of point A in Figure 3 of this utility model.

[0014] The meanings of the labels in the diagram are as follows: 1. Printing roller body; 2. Cavity; 3. Inlet pipe; 4. Outlet pipe; 5. Mounting bracket; 501. Ear plate; 6. Mounting bracket Assembly structure; 601, connecting pipe; 6011, threaded connector; 6012, retaining ring; 602, mounting head; 603, connecting ring plate; 6031, First sealing ring; 604, Ring sleeve; 6041, Second sealing ring; 7, Heat dissipation structure; 701, Thermally conductive mounting ring; 702. Heat dissipation fins. Detailed Implementation

[0015] 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.

[0016] Please refer to Figures 1-4. This embodiment provides a printing roller for printing equipment, including a cylindrical printing roller body 1. A cavity 2 is provided inside the printing roller body 1 along its axial direction. The cavity 2 extends through the entire length of the printing roller body 1. An inlet pipe 3 and an outlet pipe 4 are respectively provided at the left and right ends of the printing roller body 1 for the circulation of coolant. The inlet pipe 3 and the outlet pipe 4 are fixed to the printing roller body 1 by two symmetrically arranged sets of mounting structures 6. Multiple sets of heat dissipation structures 7 are installed at equal intervals along the length direction of the printing roller body 1 inside the cavity 2. Each set of heat dissipation structures 7 includes a heat-conducting mounting ring 701 fixedly installed on the inner wall of the cavity 2. The heat-conducting mounting ring 701 is preferably made of a material with high thermal conductivity such as copper or aluminum alloy and is fixed to the inner wall of the cavity 2 by interference fit or welding. On the outer circumferential surface of each heat-conducting mounting ring 701, multiple heat dissipation fins 702 are fixedly connected at equal intervals in the circumferential direction. The heat dissipation fins 702 are radially distributed and integrally formed with the heat-conducting mounting ring 701 to maximize the heat conduction area. The gaps between the heat dissipation fins 702 form coolant flow channels.

[0017] In summary, the improvement of this embodiment lies in: By arranging multiple sets of heat dissipation structures 7 at equal intervals within the cavity 2 of the printing roller body 1, each set of heat dissipation structures 7 includes a heat-conducting mounting ring 701 and circumferentially distributed heat dissipation fins 702, the heat exchange area between the coolant and the roller body is significantly increased. Heat is conducted through the roller wall to the heat-conducting mounting ring 701, and then rapidly diffuses to the multiple heat dissipation fins 702, making full contact with the flowing coolant, which greatly improves the heat conduction efficiency. The equally spaced heat dissipation structures ensure uniform heat dissipation along the entire length of the roller body, effectively avoiding local temperature rise and ensuring the stability of printing quality.

[0018] Based on the above, other structures also need to be disclosed in detail. For example, please refer to Figures 1, 3, and 4. Each set of mounting structures 6 includes a connecting pipe 601 and a mounting head 602. One end of the connecting pipe 601 is fixedly connected to a threaded connector 6011. The two ends of the printing roller body 1 are symmetrically machined with threaded mounting holes that match the threaded connectors 6011. By screwing the threaded connectors 6011 into the threaded mounting holes, the connecting pipe 601 is fixedly connected to the printing roller body 1. The two mounting heads 602 are fixedly connected to the inlet pipe 3 and the outlet pipe 4, respectively. Each connecting pipe 601 has a connecting hole in the radial direction. The mounting head 602 passes through the connecting hole and extends into the interior of the connecting pipe 601. The mounting head 602 is located on a section of the outer wall inside the connecting pipe 601 and is fixedly connected to a connecting ring plate 603. The connecting ring plate 603 is rotatably connected to the inner wall of the connecting pipe 601 through a bearing or sliding bearing structure, so that the mounting head 602 can be positioned relative to the connecting pipe 601. The mounting head 602 is located on a section of the outer wall outside the connecting tube 601 and is fixedly connected to a ring 604. The ring 604 is also rotatably connected to the outer wall of the connecting tube 601 through a bearing structure. This double rotatable connection design ensures that the inlet tube 3 and the outlet tube 4 can remain stationary, while the printing roller body 1 and its connected components can rotate freely.

[0019] Referring to Figure 4, a first sealing ring 6031 is embedded on the outer circumferential surface of each connecting ring plate 603, and a corresponding first groove matching the first sealing ring 6031 is formed on the inner wall of the connecting pipe 601. A second sealing ring 6041 is embedded on the inner circumferential surface of each ring sleeve 604, and a second groove matching the second sealing ring 6041 is formed on the outer wall of the connecting pipe 601. These two sealing structures effectively prevent coolant leakage from the rotating connection.

[0020] Please refer to Figure 1. The system also includes a mounting frame 5 for supporting the entire printing roller body 1. Two ear plates 501 are symmetrically fixedly connected to the mounting frame 5. Each ear plate 501 has a circular opening, through which two connecting pipes 601 pass. A retaining ring 6012 is fixedly connected to each connecting pipe 601. The two retaining rings 6012 abut against the opposite outer surfaces of the two ear plates 501, thereby axially fixing the printing roller to the mounting frame 5 while allowing the connecting pipes 601 and the printing roller body 1 to rotate freely relative to the mounting frame 5.

[0021] In summary, the working principle of this scheme is as follows: Coolant flows in from the inlet pipe 3, passes through the mounting structure 6 on the left, and enters the cavity 2 of the printing roller body 1. Since the inlet pipe 3 is connected to the stationary external pipeline through the mounting head 602, and the printing roller body 1 rotates at high speed during the printing process, the rotational connection design in the mounting structure 6 (rotational connection of the connecting ring plate 603 and the ring sleeve 604) ensures smooth fluid transfer between the stationary pipeline and the rotating printing roller body 1. When the coolant flows in the cavity 2, it comes into full contact with multiple heat dissipation structures 7. The heat generated by the printing roller body 1 during the printing process is conducted through the roller wall to the heat-conducting mounting ring 701, and the heat is further conducted to multiple heat dissipation fins 702, which greatly increases the contact area with the coolant and improves the heat exchange efficiency. The evenly spaced heat dissipation structures 7 ensure uniform heat dissipation along the entire length of the roller body, avoiding local overheating. During the coolant circulation process, the first sealing ring 6031 and the second sealing ring 6041 respectively prevent the coolant from flowing out of the connecting pipe 601. The leakage of the inner and outer walls ensures the sealing reliability of the system. After absorbing heat, the coolant flows out from the right end of the cavity 2, passes through the right-side mounting structure 6, and finally returns to the external cooling system from the outlet pipe 4, forming a complete cooling cycle.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A printing roller for printing equipment, comprising a printing roller body (1), characterized in that: The printing roller body (1) The printing roller body (1) has a cavity (2) in the middle, and the left and right ends of the printing roller body (1) are respectively provided with an inlet pipe (3) and an outlet pipe (4). The inlet pipe (3) and outlet pipe (4) are mounted on the printing press by two sets of mounting structures (6) symmetrically arranged. On the roller body (1), the cavity (2) is provided with multiple heat dissipation structures (7) at equal intervals along the length direction of the printing roller body (1).

2. The printing roller for printing equipment according to claim 1, characterized in that: Each group's heat dissipation structure (7) Each includes a thermally conductive mounting ring (701) fixedly installed on the inner wall of the cavity (2), and each of the thermally conductive mounting rings (701) The uppermost fixed connection has multiple heat dissipation fins (702) at equal intervals.

3. The printing roller for printing equipment according to claim 1, characterized in that: The installation structure described in each group (6) Each includes a connecting tube (601) and a mounting head (602), and each connecting tube (601) is fixedly connected with a threaded connection. The head (6011) and the printing roller body (1) are symmetrically provided with threaded mounting holes at both ends, and each of the threaded connections The head (6011) is threaded into the threaded mounting hole, and the two mounting heads (602) are respectively connected to the inlet pipe (3) and the outlet pipe. The pipes (4) are connected, each of the connecting pipes (601) has a connecting hole, and each of the mounting heads (602) passes through it. The connecting hole extends into the connecting tube (601), and each of the mounting heads (602) is positioned on the outer side wall of a section of the connecting tube (601). Each of the components is fixedly connected to a connecting ring plate (603), and each connecting ring plate (603) is rotatably connected to the connecting pipe (601). On the inner wall, each of the mounting heads (602) is fixedly connected to a ring (604) on the outer wall of the outer side of the outer side. Each of the aforementioned ring sleeves (604) is rotatably connected to the connecting pipe (601).

4. The printing roller for printing equipment according to claim 3, characterized in that: Each of the aforementioned connecting ring plates (603) Each of the connecting pipes (601) is fixedly connected with a first sealing ring (6031), and each of the connecting pipes (601) has a sealing ring (6031) on its inner wall. The sealing ring (6031) matches the first groove.

5. The printing roller for printing equipment according to claim 3, characterized in that: Each of the aforementioned rings (604) A second sealing ring (6041) is fixedly connected, and each of the connecting pipes (601) has a sealing ring (6041) on its outer side wall. The sealing ring (6041) matches the second groove.

6. The printing roller for printing equipment according to claim 3, characterized in that: It also includes a mounting bracket (5), Two ear plates (501) are symmetrically fixedly connected to the mounting bracket (5), and each ear plate (501) has a round opening. Each of the connecting tubes (601) has a through-hole, and each of the connecting tubes (601) is fixedly connected with a retaining ring (6012). The two retaining rings (6012) abut against the opposite sides of the two ear plates (501).

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