A u-tube press device

Abstract

This utility model discloses a U-tube forming device, including a base plate, a guide rod a on the base plate, and a lower plate, a movable plate, a pressure plate, and an upper plate arranged sequentially from bottom to top on the guide rod a. The lower plate is installed on the upper surface of the base plate, and an elastic component and a guide rod b are provided between the lower plate and the movable plate. A fixing mechanism and a forming mechanism are provided between the movable plate and the pressure plate. The pressure plate is installed on the lower surface of the upper plate, and the upper surface of the upper plate is connected to the output end of the press. The beneficial effect of this utility model is that by placing both ends of the U-tube on the fixing mechanism, and then driving the upper plate downward by the press, the forming mechanism forms the U-tube. After forming is completed, the upper plate is reset, and the worker removes the U-tube from the fixing mechanism, thereby replacing manual forming and improving forming efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a U-tube forming device. Background Technology

[0002] U-tubes with elliptical cross-sections are more likely to trigger secondary or localized flows than U-tubes with circular cross-sections, thus initiating turbulence earlier and making the turbulent pulsations stronger, which can improve heat exchange. At the same time, U-tubes with elliptical cross-sections are mainly laminar, with smooth flow and no excessive local flow velocity that would increase noise. However, there is currently no dedicated molding device for U-tubes with elliptical cross-sections connected to the main water pipe in heat exchangers. Molding can only be done manually, resulting in low molding efficiency and inconsistent molding quality, which is difficult to guarantee. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a U-tube forming device.

[0004] The purpose of this utility model is achieved through the following technical solution: A U-tube forming device includes a base plate, a guide rod a is provided on the base plate, and a lower plate, a movable plate, a pressure plate and an upper plate are arranged sequentially from bottom to top on the guide rod a. The lower plate is installed on the upper surface of the base plate, and an elastic component and a guide rod b are provided between the lower plate and the movable plate. A fixing mechanism and a forming mechanism are provided between the movable plate and the pressure plate. The pressure plate is installed on the lower surface of the upper plate, and the upper surface of the upper plate is connected to the output end of the press.

[0005] Preferably, the fixing mechanism includes a swing arm, a mounting cavity a is provided on the movable plate, a rotating shaft a is provided at the lower end of the swing arm, a through hole is provided in the middle of the lower plate, the two ends of the rotating shaft a are rotatably installed in the through hole, the swing arm is located in the mounting cavity a, and a spring a is provided between the two swing arms.

[0006] Preferably, the forming mechanism includes a guide block, forming block a, and forming block b. An installation cavity b is provided on the movable plate. The guide block is located in the installation cavity b. The lower end of the guide block is installed on the base plate. The forming block b is located in the installation cavity a and is located between the two swing rods. The forming block a is installed on the pressure plate through the rotating shaft b. When forming is performed, the forming block a is located between the guide block and the swing rod.

[0007] Preferably, the upper end of the guide block is provided with an inclined surface a, the outer side of the forming block a is provided with an inclined surface b corresponding to the inclined surface a, and the inner side of the forming block a is provided with a groove corresponding to the side of the swing rod.

[0008] Preferably, the upper surface of the molding block b is an arc-shaped surface, and the lower surface of the pressure plate is provided with an arc-shaped groove corresponding to the arc-shaped surface.

[0009] Preferably, the elastic component is spring b, which is located inside the guide rod b.

[0010] This utility model has the following advantages: By placing both ends of the U-tube on a fixed mechanism, and then using a press to move the upper plate downwards, the forming mechanism forms the U-tube. After forming is completed, the upper plate is reset, and the worker removes the U-tube from the fixed mechanism, thereby replacing manual forming and improving forming efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the U-tube forming device;

[0012] Figure 2 A structural diagram showing the positional relationship between the guide block, molding block a, and the swing rod;

[0013] Figure 3 This is a schematic diagram of the structure after U-tube molding;

[0014] Figure 4 This is a schematic diagram of the structure of the U-tube before molding;

[0015] In the diagram, 1-base plate, 2-lower plate, 3-upper plate, 4-pressure plate, 5-rotating shaft b, 6-forming block a, 7-guide rod a, 8-U-tube, 9-forming block b, 10-installation cavity a, 11-installation cavity b, 12-guide block, 13-moving plate, 14-spring b, 15-guide rod b, 16-rotating shaft a, 17-groove, 18-swing rod, 19-arc groove. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this embodiment, as Figure 1 and Figure 2 As shown, a U-tube forming device includes a base plate 1, on which a guide rod a7 is provided. From bottom to top, a lower plate 2, a movable plate 13, a pressure plate 4, and an upper plate 3 are sequentially arranged on the guide rod a7. The lower plate 2 is mounted on the upper surface of the base plate 1, and an elastic component and a guide rod b15 are provided between the lower plate 2 and the movable plate 13. Preferably, the elastic component is a spring b14, located inside the guide rod b15. A fixing mechanism and a forming mechanism are provided between the movable plate 13 and the pressure plate 4. The pressure plate 4 is mounted on the lower surface of the upper plate 3, and the upper surface of the upper plate 3 is connected to the output end of the press. By placing both ends of the U-tube 8 on the fixing mechanism, and then moving the upper plate 3 downwards via the press, the forming mechanism forms the U-tube 8. After forming, the upper plate 3 is reset, and the operator removes the U-tube 8 from the fixing mechanism, thus replacing manual forming and improving forming efficiency. In this embodiment, the press (not shown in the figure) is an existing device, and no modifications have been made to it, so it will not be described in detail here.

[0023] In this embodiment, the fixing mechanism includes a swing arm 18, a mounting cavity a10 is provided on the moving plate 13, a rotating shaft a16 is provided at the lower end of the swing arm 18, a through hole is provided in the middle of the lower plate 2, the two ends of the rotating shaft a16 are rotatably installed in the through hole, the swing arm 18 is located in the mounting cavity a10, and a spring a is provided between the two swing arms 18. Furthermore, the forming mechanism includes a guide block 12, a forming block a6, and a forming block b9. A mounting cavity b11 is provided on the moving plate 13. The guide block 12 is located within the mounting cavity b11, with its lower end mounted on the base plate 1. The forming block b9 is located within the mounting cavity a10 and is positioned between the two swing rods 18. The forming block a6 is mounted on the pressure plate 4 via a rotating shaft b5. During forming, the forming block a6 is positioned between the guide block 12 and the swing rods 18. Preferably, the upper end of the guide block 12 has an inclined surface a, the outer surface of the forming block a6 has an inclined surface b corresponding to the inclined surface a, and the inner surface of the forming block a6 has a groove 17 corresponding to the side of the swing rod 18. Further, the upper surface of the forming block b9 is an arc-shaped surface, and the lower surface of the pressure plate 4 has an arc-shaped groove 19 corresponding to the arc-shaped surface. Specifically, in the initial state, spring a pushes the two swing rods 18 outward, bringing them closer to the guide block 12. The operator places both ends of the U-tube 8 to be pressed onto the swing rods 18 respectively. Figure 4 As shown, starting the press causes the upper plate 3 to move downwards, thereby causing the pressure plate 4 to move downwards. During the downward movement of the pressure plate 4, the forming block a6 will cause the moving plate 13 to move downwards. At this time, the spring b14 is compressed. Simultaneously, under the guidance of the guide block 12, the forming block a6 will rotate to a certain extent, causing the inner side of the forming block a6 to fit against the swing rod 18, and causing the swing rod 18 to rotate slightly, making it move closer to the forming block b9. At this time, the spring a is compressed. The two ends of the U-tube 8 are pressed into an elliptical shape under the combined action of the forming block a6, the swing rod 18, and the forming block b9. The middle end of the U-tube 8 is also pressed into an elliptical shape under the combined action of the arc groove 19 and the arc surface. After the forming is completed, the upper plate 3 is reset. At this time, since both the spring a and the spring b14 are in a compressed state, the spring a will cause the swing rod 18 to reset, and the spring b14 will cause the moving plate 13 to reset. The operator then removes the formed U-tube 8 from the swing rod 18. The formed U-tube 8 is as follows. Figure 3 As shown, this provides a dedicated molding device that replaces manual molding and improves molding efficiency.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A U-tube forming device, characterized in that: Includes a base plate (1), on which a guide rod a (7) is provided. From bottom to top, a lower plate (2), a moving plate (13), a pressure plate (4), and an upper plate (3) are arranged on the guide rod a (7). The lower plate (2) is installed on the upper surface of the base plate (1), and an elastic component and a guide rod b (15) are provided between the lower plate (2) and the moving plate (13). The moving plate (13) and the pressure plate (4) have a fixing mechanism and a forming mechanism. The pressure plate (4) is installed on the lower surface of the upper plate (3), and the upper surface of the upper plate (3) is connected to the output end of the press.

2. The U-tube forming device according to claim 1, characterized in that: The fixing mechanism includes a swing arm (18), the moving plate (13) has an installation cavity a (10), the lower end of the swing arm (18) is provided with a rotating shaft a (16), the middle part of the lower plate (2) has a through hole, the two ends of the rotating shaft a (16) are rotatably installed in the through hole, the swing arm (18) is located in the installation cavity a (10), and a spring a is provided between the two swing arms (18).

3. The U-tube forming device according to claim 2, characterized in that: The forming mechanism includes a guide block (12), a forming block a (6) and a forming block b (9). The moving plate (13) has an installation cavity b (11). The guide block (12) is located in the installation cavity b (11). The lower end of the guide block (12) is installed on the base plate (1). The forming block b (9) is located in the installation cavity a (10) and is located between the two swing rods (18). The forming block a (6) is installed on the pressure plate (4) through a rotating shaft b (5). When forming, the forming block a (6) is located between the guide block (12) and the swing rod (18).

4. The U-tube forming device according to claim 3, characterized in that: The guide block (12) has an inclined surface a at its upper end, the outer side of the molding block a (6) has an inclined surface b corresponding to the inclined surface a, and the inner side of the molding block a (6) has a groove (17) corresponding to the side of the swing rod (18).

5. The U-tube forming device according to claim 4, characterized in that: The upper surface of the molding block b (9) is an arc-shaped surface, and the lower surface of the pressing plate (4) is provided with an arc-shaped groove (19) corresponding to the arc-shaped surface.

6. The U-tube forming device according to claim 1, characterized in that: The elastic component is spring b (14), which is located inside the guide rod b (15).

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