A U-tube press fitting device

Abstract

The utility model discloses a kind of U pipe press-fitting devices, including workbench, workbench is provided with slide rail, the both ends of slide rail are slidably installed with slide plate, press-fitting mechanism and locating block are provided on the slide plate, press-fitting mechanism is located at the side of locating block, the upper surface of locating block is provided with locating groove a, one end of locating groove a is provided with protruding block, and placing groove is opened on the end of locating groove a and protruding block, the upper of locating block is also provided with fixed mechanism.The beneficial effects of the utility model are: according to the length of main water pipe adjusting the position of slide plate on slide rail, the both ends of main water pipe are placed in corresponding placing groove respectively, then U pipe is placed in locating groove a, start fixed mechanism to limit U pipe, form the passage of U pipe forward linear motion, to avoid U pipe from being inclined, then start press-fitting mechanism to move to center, drive U pipe to move inward and press into the end of main water pipe, replace artificial assembly, improve assembly efficiency and qualified rate.

Description

Technical Field

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

[0002] In the wall-mounted heat exchanger industry, the U-tube is an important connecting component for various main water pipes. Therefore, the correct assembly of the U-tube and the main water pipe is particularly important. The conventional assembly method is for workers to first place the U-tube at both ends of the main water pipe and then tap the U-tube with a rubber hammer to make it enter the ends of the main water pipe. However, during the tapping process, it is easy to knock the U-tube crooked, resulting in poor fit between the main water pipe and the U-tube, which affects the subsequent brazing effect and leads to a decrease in the heat exchanger's pass rate. Utility Model Content

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

[0004] The purpose of this utility model is achieved through the following technical solution: a U-tube pressing device, including a workbench, a slide rail on the workbench, slide plates slidably mounted on both ends of the slide rail, a pressing mechanism and a positioning block on the slide plates, the pressing mechanism being located on one side of the positioning block, a positioning groove a being provided on the upper surface of the positioning block, a protrusion being provided at one end of the positioning groove a, and a placement groove being provided at the end of the positioning groove a and on the protrusion, and a fixing mechanism being provided above the positioning block.

[0005] Preferably, the pressing mechanism includes a hydraulic cylinder and a push plate. A mounting plate a is provided on the sliding plate, and a hydraulic cylinder is installed on the mounting plate a. The hydraulic rod on the hydraulic cylinder is connected to the side of the push plate, and a pressing block is provided on the other side of the push plate. The end of the pressing block is provided with an arc-shaped groove corresponding to the U-tube.

[0006] Preferably, guide rods a are installed through both sides of the mounting plate a, and the push plate is slidably mounted on the guide rods a.

[0007] Preferably, the fixing mechanism includes a cylinder and a fixing plate. Guide rods b are provided at both ends of the positioning block. The fixing plate is slidably mounted on the guide rods b. An mounting plate b is installed at the end of the guide rods b. A cylinder is mounted on the mounting plate b. The piston rod on the cylinder is connected to the fixing plate. A fixing groove is provided at the bottom of the fixing plate.

[0008] Preferably, the positioning block is also provided with a deflector groove, which is located on one side of the positioning groove a. The fixing plate is provided with a fixing groove b corresponding to the deflector groove, and a deflector top rod is provided in the deflector groove. The end of the deflector top rod is installed on the push plate.

[0009] This utility model has the following advantages: The position of the sliding plate on the slide rail is adjusted according to the length of the main water pipe, so that the two ends of the main water pipe are placed in the corresponding placement slots. Then, the U-tube is placed in the positioning slot a, and the fixing mechanism is activated to limit the U-tube, forming a channel for the U-tube to move forward in a straight line, thereby preventing the U-tube from tilting. Then, the pressing mechanism is activated to move towards the center, driving the U-tube to move inward and press into the end of the main water pipe. This replaces manual assembly and improves assembly efficiency and pass rate. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the U-tube press-fitting device;

[0011] Figure 2 This is a structural diagram of the pressing mechanism and the fixing mechanism;

[0012] Figure 3 A schematic diagram of the main water supply unit;

[0013] Figure 4 This is a schematic diagram of the spoiler strip structure;

[0014] Figure 5 This is a schematic diagram of the U-tube structure;

[0015] In the diagram, 1-workbench, 2-fixing mechanism, 3-pressing mechanism, 4-slide rail, 5-slide plate, 6-positioning block, 7-positioning groove a, 8-protrusion, 9-cylinder, 10-mounting plate a, 11-guide rod a, 12-push plate, 13-pressing block, 14-mounting plate b, 15-cylinder, 16-guide rod b, 17-fixing plate, 18-fixing groove, 19-arc groove, 20-placement groove, 21-spoiler groove, 22-spoiler top rod. 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 pressing device includes a workbench 1, on which a slide rail 4 is provided. Slide plates 5 are slidably mounted at both ends of the slide rail 4. A pressing mechanism 3 and a positioning block 6 are provided on the slide plates 5. The pressing mechanism 3 is located on one side of the positioning block 6. A positioning groove a7 is provided on the upper surface of the positioning block 6. A protrusion 8 is provided at one end of the positioning groove a7, and a placement groove 20 is formed at the end of the positioning groove a7 and on the protrusion 8. A fixing mechanism 2 is also provided above the positioning block 6. Figure 3 and Figure 5As shown, the position of the sliding plate 5 on the slide rail 4 is adjusted according to the length of the main water pipe, so that both ends of the main water pipe are placed in the corresponding placement slots 20. Then, the U-tube is placed in the positioning slot a7, and the fixing mechanism 2 is activated to limit the U-tube, forming a channel for the U-tube to move forward in a straight line, thereby preventing the U-tube from tilting. Then, the pressing mechanism 3 is activated to move towards the center, driving the U-tube to move inward and press into the end of the main water pipe. This replaces manual assembly, improving assembly efficiency and the pass rate. In this embodiment, the specific standard for adjusting the position of the sliding plate 5 on the slide rail 4 according to the length of the main water pipe is as follows: assuming the length of the main water unit is 280mm, the distance between the two sliding plates 5 is adjusted to 280.5mm, that is, 0.3~0.5mm longer than the length of the main water unit.

[0023] Furthermore, the fixing mechanism 2 includes a cylinder 15 and a fixing plate 17. Guide rods b16 are provided at both ends of the positioning block 6. The fixing plate 17 is slidably mounted on the guide rods b16. An mounting plate b14 is installed at the end of the guide rods b16, and a cylinder 15 is mounted on the mounting plate b14. The piston rod of the cylinder 15 is connected to the fixing plate 17. A fixing groove 18 is provided below the fixing plate 17. Specifically, when both ends of the main water pipe are placed in their respective placement grooves 20, and the U-tube is placed in the positioning groove a7, the cylinder 15 is activated, causing the fixing plate 17 to move downwards along the guide rods b16, closing the fixing groove 18 on the fixing plate 17 with the positioning groove a7, forming a channel for the U-tube to move forward, preventing the U-tube from becoming skewed.

[0024] In this embodiment, the pressing mechanism 3 includes a hydraulic cylinder 9 and a push plate 12. A mounting plate a10 is provided on the sliding plate 5, and the hydraulic cylinder 9 is mounted on the mounting plate a10. The hydraulic rod on the hydraulic cylinder 9 is connected to the side of the push plate 12, and a pressing block 13 is provided on the other side of the push plate 12. The end of the pressing block 13 is provided with an arc-shaped groove 19 corresponding to the U-tube. Furthermore, guide rods a11 are installed through both sides of the mounting plate a10, and the push plate 12 is slidably mounted on the guide rods a11. Specifically, after the fixing groove 18 on the fixing plate 17 closes with the positioning groove 7, the hydraulic cylinder 9 drives the push plate 12 to move inward via the hydraulic rod. Since the end of the pressing block 13 on the push plate 12 has an arc-shaped groove 19 corresponding to the U-tube, it can ensure that the U-tube is evenly stressed during the pushing process. At the same time, since the two ends of the main water pipe are placed in the corresponding placement grooves 20, the main function of the placement grooves 20 is to limit the end face of the main water pipe, so that it is not skewed when bearing the pushing force of the pressing U-tube, thus ensuring the pass rate. After the pressing is completed, the hydraulic cylinder 9 and the air cylinder 15 drive the push plate 12 and the fixing plate 17 to reset respectively. The operator takes out the main water unit with the pressed U-tube and prepares to press the next main water unit.

[0025] In this embodiment, the positioning block 6 is also provided with a baffle groove 21, which is located on one side of the positioning groove a7. The fixing plate 17 is provided with a fixing groove b corresponding to the baffle groove 21. A baffle rod 22 is provided in the baffle groove 21, and the end of the baffle rod 22 is installed on the push plate 12. Specifically, as Figure 4 As shown, the baffle strip needs to be manually inserted into the main water device beforehand, and the end face of the baffle strip should be aligned with the end face of the main water device. The hydraulic cylinder 9 drives the push plate 12 to move inward through the hydraulic rod, so that the baffle strip push rod 22 extends into the main water device and pushes the baffle strip into place, thereby avoiding manual knocking on the end face of the baffle strip and avoiding damage to the end face of the main water pipe.

[0026] 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 pressing device, characterized in that: The system includes a workbench (1), on which a slide rail (4) is provided. Slide plates (5) are slidably installed at both ends of the slide rail (4). A pressing mechanism (3) and a positioning block (6) are provided on the slide plate (5). The pressing mechanism (3) is located on one side of the positioning block (6). A positioning groove a (7) is provided on the upper surface of the positioning block (6). A protrusion (8) is provided at one end of the positioning groove a (7). Placement grooves (20) are opened at the end of the positioning groove a (7) and on the protrusion (8). A fixing mechanism (2) is also provided above the positioning block (6).

2. The U-tube pressing device according to claim 1, characterized in that: The pressing mechanism (3) includes a hydraulic cylinder (9) and a push plate (12). A mounting plate a (10) is provided on the sliding plate (5). The hydraulic cylinder (9) is mounted on the mounting plate a (10). The hydraulic rod on the hydraulic cylinder (9) is connected to the side of the push plate (12). A pressing block (13) is provided on the other side of the push plate (12). The end of the pressing block (13) is provided with an arc groove (19) corresponding to the U-tube.

3. The U-tube pressing device according to claim 2, characterized in that: Guide rods a (11) are installed through both sides of the mounting plate a (10), and the push plate (12) is slidably installed on the guide rods a (11).

4. The U-tube pressing device according to claim 2, characterized in that: The fixing mechanism (2) includes a cylinder (15) and a fixing plate (17). The positioning block (6) has guide rods b (16) at both ends. The fixing plate (17) is slidably mounted on the guide rods b (16). The end of the guide rods b (16) is mounted on a mounting plate b (14). The cylinder (15) is mounted on the mounting plate b (14). The piston rod on the cylinder (15) is connected to the fixing plate (17). A fixing groove (18) is provided below the fixing plate (17).

5. The U-tube pressing device according to claim 4, characterized in that: The positioning block (6) is also provided with a turbulence groove (21), which is located on one side of the positioning groove a (7). The fixing plate (17) is provided with a fixing groove b corresponding to the turbulence groove (21). A turbulence top rod (22) is provided in the turbulence groove (21), and the end of the turbulence top rod (22) is installed on the push plate (12).

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