A heat pipe annular weld polishing device

Abstract

The present application belongs to the technical field of heat pipe manufacturing, and particularly relates to a heat pipe annular weld polishing device. The present application comprises an end support frame, an intermediate support frame, a polishing support protection frame, a connecting support, a driving motor, a three-jaw chuck, a polishing grinding wheel and a rotary motor. The end support frame, the intermediate support frame and the polishing support protection frame are arranged in parallel. The polishing support protection frame is fixedly provided with the connecting support at one end close to the intermediate support frame. The driving motor and the three-jaw chuck are connected with the connecting support through a connecting plate, and the driving motor drives the three-jaw chuck to rotate. The rear end of the three-jaw chuck is provided with the polishing grinding wheel, and the polishing grinding wheel is connected with the rotary motor. The present application can solve the problems of low polishing efficiency, poor surface quality and poor size consistency of the high-precision annular weld excess height of the slender pipe, improve the polishing quality and efficiency of the pipe annular weld, and avoid the influence of the weld polishing quality caused by the difference in personnel operation.

Description

Technical Field

[0001] This invention belongs to the field of heat pipe manufacturing technology, specifically relating to a heat pipe annular weld grinding device. Background Technology

[0002] Heat pipes are slender tubular components, and the surface reinforcement of the circumferential weld seam after welding is typically 0.5~1mm. In some specific scenarios, the gap between its outer diameter and the assembly hole is around 0.1mm. To ensure assemblability, the weld seam needs to be ground. Due to the slender shape of the fitting and the small weld reinforcement, the weld seam position is easily deviated from the axis under the action of the grinding head during grinding, resulting in uneven grinding and even scratches on the surface of the tube shell, affecting the quality of the fitting. Therefore, multiple positioning constraints need to be set along its length. At the same time, traditional manual angle grinder grinding relies too much on experience, cannot guarantee grinding accuracy, and cannot guarantee the consistency of surface quality, easily causing uneven weld reinforcement.

[0003] The domestic literature, titled "An Automatic Grinding Device and Method for the Outer Diameter of Drill Pipe Welds," provides a device and method for grinding the outer diameter of welds on slender rods. The device includes a frame, an electric carriage, and grinding rollers, with the grinding rollers rotated at high speed by a servo motor. However, there is no description of a device for high-precision grinding of circumferential welds on slender tubular components. Summary of the Invention

[0004] The technical problem solved by this invention: The heat pipe annular weld grinding device provided by this invention can solve the problems of low grinding efficiency, poor surface quality, and poor dimensional consistency of high-precision annular welds of slender pipes, improve the grinding quality and efficiency of annular welds of pipes, and avoid the impact of weld grinding quality caused by differences in personnel operation.

[0005] The technical solution adopted in this invention is as follows: A grinding device for annular weld seams of heat pipes includes an end support frame, an intermediate support frame, a grinding support and protective frame, a connecting bracket, a drive motor, a three-jaw chuck, a grinding wheel, and a rotary motor. The end support frame, intermediate support frame, and grinding support and protective frame are arranged in parallel. A connecting bracket is fixedly installed on one end of the grinding support and protective frame near the intermediate support frame. The drive motor and the three-jaw chuck are connected to the connecting bracket through a connecting plate, and the drive motor drives the three-jaw chuck to rotate. A grinding wheel is provided at the rear end of the three-jaw chuck, and the grinding wheel is connected to the rotary motor.

[0006] The end support frame and the middle support frame are provided with heat pipe support holes at their upper ends to limit the position of the heat pipe.

[0007] The rotary motor is mounted on the axial slider, the axial slider is mounted on the guide rail of the radial slider, and the radial slider is mounted on the lower guide rail.

[0008] The radial slider is provided with an axial screw. One end of the axial screw is connected to the axial slider by a thread, and the other end of the axial screw is provided with a second handwheel. The axial slider moves along the heat pipe axially on the guide rail of the radial slider by rotating the second handwheel.

[0009] The lower guide rail is provided with a radial screw. One end of the radial screw is connected to the radial slider by a thread, and the other end is provided with a first handwheel. The radial slider moves the heat pipe radially on the two guide rails of the lower guide rail by rotating the first handwheel.

[0010] The lower guide rail includes a bottom support plate, a first slide rail, and a side baffle. The first slide rail and the side baffle are fixedly installed on the bottom support plate. The side baffle is arranged perpendicular to the first slide rail, and a threaded hole is provided at the center of the side baffle. The threaded hole is connected to a radial screw.

[0011] The radial slider includes a radial slide rail and an axial connecting plate. The radial slide rail has groove structures at both ends, which are slidably connected with the first slide rail. The axial connecting plate is located at the center of the bottom of the radial slide rail. The axial connecting plate has a threaded hole at its center, which is coaxially arranged with the threaded hole at the center of the side baffle and connected by a radial screw. The radial screw connection drives the radial slide rail to move relative to the lower guide rail.

[0012] A second slide rail is fixedly connected to the upper end face of the radial slide rail. The side of the second slide rail is a lateral connecting plate. A threaded hole is opened at the center of the lateral connecting plate, and the threaded hole is connected to the axial screw.

[0013] The axial slider includes a support base, a sliding groove, and a lateral connecting plate. The upper end of the support base provides support for a rotary motor. The lower end of the support base has sliding grooves on both sides. The sliding grooves are connected to the axial second slide rail to achieve relative sliding. The center of the bottom of the support base has a lateral connecting plate with a threaded hole at its center. The threaded hole is coaxially arranged with the threaded hole on the lateral connecting plate and connected by an axial screw. The axial screw connection drives the support base and the radial slider to move relative to each other.

[0014] The grinding wheel is equipped with a grinding limiting mechanism, which includes a support arm, a cross-threaded rotary rod, a limiting arm, and a limiting roller. The support arm is an L-shaped plate with a through hole at the center of one side. The connecting shaft between the grinding wheel and the rotary motor passes through this through hole. A limiting arm is provided on the inner side of the other side of the support arm. The limiting arm is connected to the outer cross-threaded rotary rod via a rotating shaft. The front end of the limiting arm has a V-shaped structure, and the end has a limiting roller. The cross-threaded rotary rod is connected to a threaded hole on the support arm and can rotate on the support arm, thereby pushing the limiting arm to move radially. The limiting roller is a stainless steel ball bearing structure that provides support for the heat pipe weld during grinding. By rotating and adjusting the position of the limiting arm that cooperates with the cross-threaded rotary rod, two limiting rollers fixed on the limiting arm support the heat pipe during the grinding process and limit the eccentricity of the heat pipe during grinding.

[0015] The beneficial effects of this invention are: (1) The present invention provides a heat pipe annular weld grinding device, which supports pipes with a length of more than 3.5m through multiple support frames to ensure their straightness, and the grinding accuracy can reach 0.05mm. The surface after grinding is free of scratches.

[0016] (2) The present invention provides a heat pipe annular weld grinding device, which can grind welds of different diameters and positions by means of the cooperation of radial handwheel and axial handwheel.

[0017] (3) The heat pipe annular weld grinding device provided by the present invention ensures the concentricity of the weld during the grinding process by supporting the limiting roller on the other side of the grinding wheel.

[0018] (4) The heat pipe annular weld grinding device provided by the present invention has the characteristics of simple structure and convenient operation. It can greatly improve the grinding efficiency and quality of pipe welds, improve the dimensional consistency after grinding, and has broad application prospects. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in describing the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are merely some embodiments recorded in the present invention. Those skilled in the art can derive other drawings from the following drawings without any creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a heat pipe annular weld grinding device provided by the present invention; Figure 2 This is a schematic diagram of the installation structure of the pipe fitting annular weld grinding device of the present invention; Figure 3 This is a schematic diagram of a partial clamping mechanism of the present invention; Figure 4 This is a schematic diagram of the grinding mechanism of the present invention; Figure 5 This is a schematic diagram of the lower guide rail structure; Figure 6 This is a schematic diagram of a radial slider structure; Figure 7 This is a schematic diagram of the axial slider structure; Figure 8 A schematic diagram of the limiting mechanism is being polished; In the diagram: 1-End support frame, 2-Intermediate support frame, 3-Grinding support and protection frame, 4-Connecting bracket, 5-Drive motor, 6-Three-jaw chuck, 7-Grinding wheel, 8-Rotary motor, 9-Support arm, 10-Cross threaded screw rod, 11-Limit arm, 12-Limit roller, 13-Lower guide rail, 14-Radial screw, 15-First handwheel, 16-Radial slider, 17-Axial screw, 18-Second handwheel, 19-Axial slider, 20-Support plate, 21-Slide rail, 22-Side baffle, 23-Axial slide rail, 24-Side connecting plate, 25-Radial slide rail, 26-Axial connecting plate, 27-Support base, 28-Sliding groove, 29-Side connecting plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] like Figure 1 and 2 As shown, the present invention provides a heat pipe annular weld grinding device, comprising an end support frame 1, an intermediate support frame 2, a grinding support and protection frame 3, a connecting bracket 4, a drive motor 5, a three-jaw chuck 6, a grinding wheel 7, a rotary motor 8, a lower guide rail 13, a radial screw 14, a first handwheel 15, a radial slider 16, an axial screw 17, a second handwheel 18, and an axial slider 19. The end support frame 1, the intermediate support frame 2, and the grinding support and protection frame 3 are arranged in parallel. The upper ends of the end support frame 1 and the intermediate support frame 2 are provided with heat pipe support holes to limit the movement of the heat pipe. A connecting bracket 4 is fixedly installed on one end of the grinding support and protection frame 3 near the intermediate support frame 2. Figure 3 As shown, the drive motor 5 and the three-jaw chuck 6 are connected to the connecting bracket 4 via a connecting plate. The drive motor 5 drives the three-jaw chuck 6, which functions to clamp and rotate around a center. A grinding wheel 7 is provided at the rear end of the three-jaw chuck 6. Figure 4 As shown, the grinding wheel 7 is connected to a rotary motor 8, which is mounted on an axial slider 19. The axial slider 19 is mounted on a guide rail of a radial slider 16. An axial screw 17 is provided on the radial slider 16. One end of the axial screw 17 is threadedly connected to the axial slider 19, and the other end of the axial screw 17 is provided with a second handwheel 18. The axial slider 19 can move axially along the heat pipe along the guide rail of the radial slider 16 by rotating the second handwheel 18. The radial slider 16 is mounted on a lower guide rail 13, which is provided with a radial screw 14. One end of the radial screw 14 is threadedly connected to the radial slider 16, and the other end is provided with a first handwheel 15. The radial slider 16 can move radially along the two guide rails of the lower guide rail 13 by rotating the first handwheel 15. The lower guide rail 13 is fixedly connected to the grinding support and protective frame 3.

[0025] like Figure 5As shown, the lower guide rail 13 includes a bottom support plate 20, a first slide rail 21, and a side baffle 22. The first slide rail 21 and the side baffle 22 are fixedly installed on the bottom support plate 20. The side baffle 22 is arranged perpendicularly to the first slide rail 21. A threaded hole is provided at the center of the side baffle 22, and the threaded hole is connected to the radial screw 14.

[0026] like Figure 6 As shown, the radial slider 16 includes an axial second slide rail 23, a lateral connecting plate 24, a radial slide rail 25, and an axial connecting plate 26. The radial slide rail 25 has groove structures at both ends, which are slidably connected to the first slide rail 21. The axial connecting plate 26 is located at the center of the bottom of the radial slide rail 25. The axial connecting plate 26 has a threaded hole at its center, which is coaxially arranged with the threaded hole at the center of the lateral baffle 22 and connected by a radial screw 14. The radial screw 14 drives the radial slide rail 25 to move relative to the lower guide rail 13. The second slide rail 23 is fixedly connected to the upper end face of the radial slide rail 25. The side of the second slide rail 23 is a lateral connecting plate 24. The lateral connecting plate 24 has a threaded hole at its center, which is connected to the axial screw 17.

[0027] like Figure 7 As shown, the axial slider 19 includes a support base 27, a sliding groove 28, and a lateral connecting plate 29. The upper end of the support base 27 provides support for the rotary motor 8. The lower end of the support base 27 has sliding grooves 28 on both sides. The sliding grooves 28 are connected to the axial second slide rail 23 to achieve relative sliding. The center of the bottom of the support base 27 has a lateral connecting plate 29. The center of the lateral connecting plate 29 has a threaded hole. The threaded hole is coaxially arranged with the threaded hole on the lateral connecting plate 24 and is connected by an axial screw 17. The axial screw 17 drives the support base 27 to move relative to the radial slider 16.

[0028] like Figure 8As shown, the grinding wheel 7 is equipped with a grinding limiting mechanism, which includes a support arm 9, a cross-threaded rotary rod 10, a limiting arm 11, and a limiting roller 12. The support arm 9 is an L-shaped plate with a through hole at the center of one side. The connecting shaft between the grinding wheel 7 and the rotary motor 8 passes through this through hole. The limiting arm 11 is provided on the inner side of the other side of the support arm 9. The limiting arm 11 is connected to the outer cross-threaded rotary rod 10 via a rotating shaft. The front end of the limiting arm 11 is V-shaped. The structure includes a limiting roller 12 at the end. The cross-threaded swivel rod 10 is connected to the threaded hole on the support arm 9 and can rotate on the support arm 9, thereby pushing the limiting arm 11 to move radially. The limiting roller 12 is a stainless steel ball structure that provides support for the heat pipe weld during grinding. By rotating and adjusting the position of the limiting arm 9 that cooperates with the cross-threaded swivel rod 10, the two limiting rollers 12 fixed on the limiting arm 9 provide support for the heat pipe during the grinding process and limit the eccentricity of the heat pipe during grinding.

[0029] This invention employs a multi-segment support frame to support pipes exceeding 3.5m in length; it enables rapid, efficient, and high-quality grinding of the circumferential weld seam on the end face of slender pipes, achieving a grinding accuracy of 0.1mm; it uses a combination of a hand-cranked slide rail and a lead screw to precisely control the position of the grinding head along the axial and radial directions of the pipe; and it uses two rolling rollers to support the pipe during grinding, ensuring grinding accuracy.

[0030] The working principle of this invention is as follows: Align the center of the support frame, and pass the pipe fitting sequentially through the end support frame 1, the middle support frame 2, and the three-jaw chuck 6. Start the drive motor 5 to clamp the pipe fitting with the three-jaw chuck 6. Adjust the second handwheel 18 to drive the axial slider 19 to move, so that the grinding wheel 7 is aligned with the weld seam of the pipe fitting to be ground. Adjust the first handwheel 15 to drive the radial slider 16 to move, so that the surface of the grinding wheel 7 contacts the surface of the weld seam of the pipe fitting. Adjust the cross-threaded swivel rod 10 so that the limiting roller 12 contacts the surface of the high-temperature hot pipe weld seam under the push of the limiting arm 11. Start the rotary motor 8 to drive the grinding wheel 7 to rotate and begin grinding. During the grinding process, gradually reduce the grinding diameter by adjusting the first handwheel 15, and at the same time reduce the support diameter of the limiting roller 12 by adjusting the cross-threaded swivel rod 10, until the excess weld height is completely removed.

[0031] While those skilled in the art will recognize that the present invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention, the embodiments should be considered illustrative and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description, and therefore all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although the present invention is described according to embodiments, not every embodiment includes only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grinding device for annular weld seams of heat pipes, characterized in that, The device includes an end support frame (1), an intermediate support frame (2), a grinding support and protection frame (3), a connecting bracket (4), a drive motor (5), a three-jaw chuck (6), a grinding wheel (7), and a rotary motor (8). The end support frame (1), the intermediate support frame (2), and the grinding support and protection frame (3) are arranged in parallel. A connecting bracket (4) is fixedly installed on one end of the grinding support and protection frame (3) near the intermediate support frame (2). The drive motor (5) and the three-jaw chuck (6) are connected to the connecting bracket (4) through a connecting plate. The drive motor (5) drives the three-jaw chuck (6) to rotate. A grinding wheel (7) is provided at the rear end of the three-jaw chuck (6). The grinding wheel (7) is connected to the rotary motor (8).

2. The automatic grinding device for heat pipe circumferential welds according to claim 1, characterized in that, The end support frame (1) and the middle support frame (2) are provided with heat pipe support holes at their upper ends to limit the position of the heat pipe.

3. The automatic grinding device for heat pipe circumferential welds according to claim 1, characterized in that, The rotary motor (8) is mounted on the axial slider (19), the axial slider (19) is mounted on the guide rail of the radial slider (16), and the radial slider (16) is mounted on the lower guide rail (13).

4. The automatic grinding device for heat pipe circumferential weld seams according to claim 3, characterized in that, The radial slider (16) is provided with an axial screw (17). One end of the axial screw (17) is connected to the axial slider (19) by a thread. The other end of the axial screw (17) is provided with a second handwheel (18). The axial slider (19) moves along the heat pipe axis on the guide rail of the radial slider (16) by rotating the second handwheel (18).

5. The automatic grinding device for heat pipe circumferential welds according to claim 4, characterized in that, The lower guide rail (13) is provided with a radial screw (14). One end of the radial screw (14) is connected to the radial slider (16) by a thread, and the other end is provided with a first handwheel (15). The radial slider (16) moves radially on the two guide rails of the lower guide rail (13) by rotating the first handwheel (15).

6. The automatic grinding device for heat pipe circumferential welds according to claim 5, characterized in that, The lower guide rail (13) includes a bottom support plate (20), a first slide rail (21) and a side baffle (22). The first slide rail (21) and the side baffle (22) are fixedly installed on the bottom support plate (20). The side baffle (22) is arranged perpendicularly to the first slide rail (21). The side baffle (22) has a threaded hole at its center, and the threaded hole is connected to the radial screw (14).

7. The automatic grinding device for heat pipe circumferential weld seams according to claim 6, characterized in that, The radial slider (16) includes a radial slide rail (25) and an axial connecting plate (26). The radial slide rail (25) has groove structures at both ends and slides in cooperation with the first slide rail (21). The radial slide rail (25) has an axial connecting plate (26) at the bottom center. The axial connecting plate (26) has a threaded hole at the center and is coaxially arranged with the threaded hole at the center of the side baffle (22). It is connected by a radial screw (14). The radial screw (14) drives the radial slide rail (25) to move relative to the lower guide rail (13).

8. The automatic grinding device for heat pipe circumferential weld seams according to claim 7, characterized in that, The upper end face of the radial slide rail (25) is fixedly connected to a second slide rail (23). The side of the second slide rail (23) is a lateral connecting plate (24). A threaded hole is opened at the center of the lateral connecting plate (24), and the threaded hole is connected to the axial screw (17).

9. The automatic grinding device for heat pipe circumferential weld seams according to claim 8, characterized in that, The axial slider (19) includes a support base (27), a sliding groove (28), and a lateral connecting plate (29). The upper end of the support base (27) provides support for the rotary motor (8). The lower end of the support base (27) is provided with sliding grooves (28) on both sides. The sliding grooves (28) are connected to the axial second slide rail (23) to achieve relative sliding. The center of the bottom of the support base (27) is provided with a lateral connecting plate (29). The center of the lateral connecting plate (29) is provided with a threaded hole. The threaded hole is coaxially arranged with the threaded hole on the lateral connecting plate (24) and connected by an axial screw (17). The axial screw (17) connects and drives the support base (27) and the radial slider (16) to move relative to each other.

10. The automatic grinding device for heat pipe circumferential welds according to claim 1, characterized in that, The grinding wheel (7) is equipped with a grinding limiting mechanism, which includes a support arm (9), a cross-threaded rotary rod (10), a limiting arm (11), and a limiting roller (12). The support arm (9) is an L-shaped plate with a through hole at the center of one side. The connecting shaft between the grinding wheel (7) and the rotary motor (8) passes through this through hole. The inner side of the other side of the support arm (9) is provided with a limiting arm (11). The limiting arm (11) is connected to the outer cross-threaded rotary rod (10) through a rotating shaft. The front end of the limiting arm (11) is V-shaped. The structure has a limiting roller (12) at the end. The cross-threaded swivel (10) is connected to the threaded hole on the support arm (9) and can rotate on the support arm (9) to push the limiting arm (11) to move radially. The limiting roller (12) is a stainless steel ball structure, which provides support for the heat pipe weld during grinding. By rotating and adjusting the position of the limiting arm (9) that cooperates with the cross-threaded swivel (10), the two limiting rollers (12) fixed on the limiting arm (9) can support the heat pipe during the grinding process and limit the eccentricity of the heat pipe during the grinding process.

Images