A heating roller

Abstract

The utility model provides a kind of heating roller, including roller body, roller shell and heating device, the roller shell includes hollow inner chamber, the roller body is installed in the inner chamber of the roller shell, the heating device is along the axial installation in the inside of the roller body, the roller body includes roller body ontology, multiple heat conduction parts are arranged in the outer surface of the roller body ontology;By using the above heating roller, the heat generated in heating device can be effectively and uniformly transmitted to the object, the heat conduction groove capable of acting as heat pipe is formed in the roller body, thereby reducing the number of components, at the same time, by using the heat conduction part extending upward, not only when the roller body rotates, but also when the roller body stops rotating, heat exchange can be stably realized by using heat conduction, and the roller body can be easily assembled into the roller shell in interference fit, thereby the assembly can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of roller technology, specifically to a heating roller. Background Technology

[0002] A heated roller is a cylindrical component that can be heated and rotated. It typically consists of a metal core (aluminum or steel) and a built-in heating source (such as a halogen lamp, ceramic heater, etc.). Its main function is to permanently fix the material onto the medium (film) being processed through heat and pressure.

[0003] In existing technologies, the heating roller device is made of a thermally conductive material (e.g., metal) to transfer heat energy generated from a cylindrical heater to the outer surface of the roller, and a separate heat pipe is assembled within the heating roller device. However, the heating roller device, manufactured as a single structure, suffers from uneven heat conduction due to significant heat loss during the transfer of heat energy from the heater to the outer surface of the roller, and different heat dissipation conditions at the left and right ends and the center, resulting in a severe temperature deviation between the outer surface of the left and right ends and the outer surface of the center. Utility Model Content

[0004] In view of the defects existing in the prior art, the purpose of this utility model is to provide a heating roller to solve the problem of uneven heat conduction caused by the serious deviation between the outer surface temperature of the left and right ends and the outer surface temperature of the center of the existing heating roller.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This application provides a heating roller, including a roller body, a roller shell, and a heating device. The roller shell includes a hollow inner cavity, and the roller body is installed in the inner cavity of the roller shell. The heating device is installed inside the roller body along the axial direction of the roller body. The roller body includes a roller body body and a plurality of heat-conducting parts disposed on the outer surface of the roller body body. The heat-conducting parts are axially arranged along the length direction of the roller body body, and the plurality of heat-conducting parts are spaced apart along the circumferential direction on the outer surface of the roller body body. The top end of the heat-conducting parts contacts the inner wall of the roller shell, and a heat-conducting groove is formed between an adjacent pair of heat-conducting parts. The heat-conducting groove is used to hold a heat-conducting fluid.

[0007] Furthermore, the roller body also includes a pair of connecting channels, which are respectively disposed at opposite ends of the roller body body, and the connecting channels are used to connect one end of the plurality of heat-conducting grooves.

[0008] Furthermore, the heat-conducting part is fixedly installed on the inner wall of the roller shell by an interference fit.

[0009] Furthermore, a groove is provided between adjacent pairs of heat-conducting grooves, the groove being used to hold the heat-conducting fluid.

[0010] Furthermore, the groove depth of the groove portion is less than the groove depth of the heat-conducting groove.

[0011] The beneficial effects of this utility model are as follows:

[0012] By employing the aforementioned heating roller, the heat generated in the heating device can be effectively and evenly transferred to the object. A heat-conducting groove that functions as a heat pipe is formed in the roller body, thereby reducing the number of parts. At the same time, by utilizing the upwardly extending heat-conducting part, heat exchange can be stably achieved not only when the roller body is rotating but also when the roller body is not rotating. Furthermore, the roller body can be easily assembled into the roller shell in an interference fit manner, thereby greatly improving assemblability. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the heating roller in the embodiments of this application.

[0014] Figure 2 This is an exploded view of the installation and assembly structure of the heating roller in the embodiments of this application.

[0015] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of the heating roller in the embodiment of this application.

[0016] In the picture:

[0017] 100 - Heating roller;

[0018] 10-Roller body; 11-Heat-conducting part; 12-Heat-conducting groove; 13-Connecting channel; 14-Groove part;

[0019] 20 - Roller housing. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] See Figures 1 to 3As shown in the figure, this embodiment provides a heating roller 100, including a roller body 10 and a roller shell 20. The roller body is generally formed in a tubular shape and can be a cylindrical structure with an internal receiving space to allow insertion into the roller body 10. The roller shell 20 can be made of a thermally conductive material such as metal or ceramic to receive heat energy from the roller body 10. It can be a cylindrical structure with sufficient strength and durability to allow assembly with the roller body 10, and its outer surface can be coated with an elastic outer skin such as rubber or silicone. However, this roller shell 20 is not limited to the figures shown, and various shapes or types of tubular structures can be used depending on the specifications of the object. For example, the roller body 10 is inserted into the receiving space of the roller shell 20. More specifically, the roller body 10 includes a heat-conducting portion 11 and another portion of the outer diameter surface of the roller body 10. The heat-conducting portion 11 is formed on a portion of the outer diameter surface of the roller body 10, protruding towards the roller shell 20, so as to transfer the heat energy of the heating device to the roller shell 20 by heat conduction. The heat-conducting portion 11 is formed on another portion of the outer diameter surface of the roller body 10, and is in direct contact with the roller shell 20 in an interference fit. The shrink-fit method, for example, involves stitching the roller body 10, which expands due to high-temperature heating or contracts due to room temperature or low-temperature cooling, to the roller shell 20 at room temperature in a forced fit. However, in addition to the shrink-fit method, various forced fit methods can also be used as the joining method between the roller shell 20 and the roller body 10 in this solution. For example, such as... Figure 2 As shown, a heat-conducting groove 12 is provided between adjacent pairs of heat-conducting parts 11, and multiple grooves are formed along the length direction on the outer diameter surface of the roller body 10. The heat-conducting part 11 can be a groove shape that is also formed along the length direction between the heat-conducting groove 12 and other adjacent heat-conducting grooves 12.

[0022] Therefore, the working fluid, such as water, alcohol, or other liquids, contained within the heat-conducting groove 12 can move freely in the outer diameter direction, enabling more rapid and uniform transfer of internal heat energy. The roller body 10 may also include a connecting channel 13, which is formed circumferentially at one or both ends to allow the multiple heat-conducting grooves 12 to communicate with each other. Thus, the working fluid moving freely inside the heat-conducting groove 12 can also move freely to adjacent heat-conducting grooves 12 via the connecting channel 13, thereby enabling more rapid and uniform overall heat energy transfer, achieving more uniform and faster heat transfer.

[0023] In some embodiments, the roller body 10 may include a heat-conducting groove 12 cut to a first depth and a groove portion 14 cut to a second depth below the first depth. The groove portion 14 can improve the heat exchange efficiency between the heating device and the roller housing 20.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A heating roller, characterized in that, The device includes a roller body, a roller shell, and a heating device. The roller shell includes a hollow inner cavity, and the roller body is installed in the inner cavity of the roller shell. The heating device is installed inside the roller body along the axial direction of the roller body. The roller body includes a roller body body and a plurality of heat-conducting parts disposed on the outer surface of the roller body body. The heat-conducting parts are arranged axially along the length direction of the roller body body, and the plurality of heat-conducting parts are spaced apart along the circumferential direction on the outer surface of the roller body body. The top end of the heat-conducting parts contacts the inner wall of the roller shell, and a heat-conducting groove is formed between adjacent pairs of heat-conducting parts. The heat-conducting groove is used to hold heat-conducting fluid.

2. A heating roller according to claim 1, characterized in that, The roller body also includes a pair of connecting channels, which are respectively disposed at opposite ends of the roller body body. The connecting channels are used to connect one end of the plurality of heat-conducting grooves.

3. A heating roller according to claim 1, characterized in that, The heat-conducting part is fixedly installed on the inner wall of the roller shell by an interference fit.

4. A heating roller according to claim 1 or 2, characterized in that, A groove is provided between adjacent pairs of heat-conducting grooves, the groove being used to hold the heat-conducting fluid.

5. A heating roller according to claim 4, characterized in that, The groove depth of the groove portion is less than the groove depth of the heat-conducting groove.

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