Test device for welding joint

Abstract

The utility model discloses a test device for a welding joint, which comprises a base, a pressing mechanism and a carrying mechanism, the pressing mechanism is arranged on one side of the surface of the base, the carrying mechanism is arranged on the upper surface of the base in a sliding manner and comprises a moving seat, a V-shaped groove is formed in the middle of the surface of the moving seat, and the V-shaped groove is arranged in the V-shaped groove. The upper pressing plate is arranged to press and fix the welding joint body, meanwhile, the compression spring is arranged at the top of the upper pressing plate, and the upper pressing plate extrudes the compression spring upwards so as to place and press the welding joint bodies of different specifications, so that the practicability of the welding joint fixing device is further improved; and meanwhile, the movable seat for placing the welding joint body is arranged and is movable, so that the welding joint body is driven by the movable seat to enter the position below the pressing mechanism and move out of the position below the pressing mechanism, the hand safety of a worker is guaranteed, and the worker does not need to stretch the hand into the pressing mechanism to assemble and disassemble the welding joint body.

Description

Technical Field

[0001] This utility model relates to the field of welding joint testing technology, specifically a testing device for welding joints. Background Technology

[0002] Automotive joints require welding during production. The relative positions of the welded parts in space are called welded joints. The strength of the joint is affected not only by the weld quality but also by its geometry, dimensions, stress conditions, and operating conditions. After assembly, the welded joints undergo bending deformation during vehicle operation. Therefore, during production, the welded joints require testing, including bending, to assess their ductility, crack resistance, and surface quality.

[0003] However, most existing technologies use fixed placement slots to place welding joints of specified specifications. The joints may shift under the pressure of the punch above, causing the welding joints to tilt and making it impossible to position and fix the welding joints. This can lead to differences in test results or failures. At the same time, setting up a manual rotation and pressing component is inefficient, and the placement slot is located directly below the punch. This may cause injury to workers' hands when placing the welding joints, posing a safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide a testing device for welded joints. By setting a compression spring on the top of the upper pressure plate, the upper pressure plate presses the compression spring upward to place and fix the welded joint body of different specifications, which facilitates fatigue testing of the welded joint body. At the same time, a movable seat is set to move the welded joint body out from the lower pressing mechanism, so that the worker does not need to reach under the lower pressing mechanism to take out the welded joint body, thereby solving at least one of the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A testing device for welded joints includes a base, a pressing mechanism, and a loading mechanism. The pressing mechanism is disposed on one side of the surface of the base, and the loading mechanism is slidably disposed on the upper surface of the base.

[0007] The loading mechanism includes a movable seat, a V-shaped groove is formed in the middle of the surface of the movable seat, and a placement plate is respectively provided on both sides of the V-shaped groove on the top surface of the movable seat. A pressing component is also symmetrically provided above the placement plate for pressing and fixing the welding joint body placed on the surface of the placement plate.

[0008] Preferably, the pressing assembly includes a fixing frame, which is U-shaped and is symmetrically fixedly installed on both sides of the surface of the movable seat. A compression spring is provided in the middle of the inner top surface of both sets of fixing frames. The bottom end of the compression spring is fixedly installed to the top surface of the upper pressure plate. The welding joint body is placed between the placement plate and the upper pressure plate.

[0009] Preferably, guide rods are fixedly installed on both sides of the top surface of the upper pressure plate, and the top ends of the guide rods penetrate the top surface of the fixing frame and are slidably connected to the fixing frame.

[0010] Preferably, the top end of the guide rod is also provided with a limiting plate to prevent the guide rod from falling off the top of the fixing frame, and the diameter of the limiting plate is larger than the cross-sectional diameter of the guide rod.

[0011] Preferably, the two end sidewalls of the two sets of upper pressure plates are fixedly installed to the bottom end of the connecting frame, and a lifting rod is provided in the middle of the top surface of the fixed frame, and the working end of the lifting rod is fixedly installed to the inner top surface of the connecting frame.

[0012] Preferably, the inner top surface of the connecting frame above the fixed frame is higher than the top surface of the limiting plate located at the upper end of the guide rod of the fixed frame and does not contact the top surface of the limiting plate.

[0013] Preferably, a groove is provided in the middle of the surface of the base, and a threaded rod is rotatably provided inside the groove. One end of the threaded rod passes through one side wall of the base and is keyed to the output shaft of the servo motor. The servo motor is fixedly installed on the side wall of the base. The movable seat is sleeved on the outside of the groove and threadedly connected to the groove. The movable seat is slidably disposed inside the groove and slidably connected to the surface of the base.

[0014] Preferably, the pressing mechanism includes a bracket, which is fixedly mounted on the surface of the base. A hydraulic rod is provided on the top of the bracket, and the working end of the hydraulic rod passes through the top surface of the bracket and is fixedly installed with the punch. A controller is also provided on the side wall of the bracket.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model uses an upper pressure plate to press and fix the welding joint body. At the same time, a compression spring is set on the top of the upper pressure plate. The upper pressure plate compresses the compression spring to place and press the welding joint body of different specifications, thereby increasing the practicality of this utility model. In addition, the movable seat for placing the welding joint body is also provided to facilitate the movement of the welding joint body under the lower pressure mechanism and out of the lower pressure mechanism, so as to ensure the safety of the worker's hands and eliminate the need for the worker to put their hands into the lower pressure mechanism to load and unload the welding joint body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the movable seat below the punch of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the movable base of this utility model located below the punch;

[0019] Figure 3 This is a schematic diagram of the upper pressure plate in the pressed-down state of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the upper pressure plate of this utility model in the raised state.

[0021] In the diagram: 1. Base; 2. Bracket; 3. Controller; 4. Hydraulic rod; 5. Punch; 6. Slide groove; 7. Servo motor; 8. Threaded rod; 9. Moving seat; 10. Fixed frame; 11. Placement plate; 12. V-groove; 13. Upper pressure plate; 14. Compression spring; 15. Guide rod; 16. Connecting frame; 17. Lifting rod; 18. Welded joint body. Detailed Implementation

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 4 This utility model provides a technical solution:

[0024] A test device for welded joints includes a base 1, a pressing mechanism and a loading mechanism. The pressing mechanism is disposed on one side of the surface of the base 1, and the loading mechanism is slidably disposed on the upper surface of the base 1.

[0025] The loading mechanism includes a movable seat 9. A V-shaped groove 12 is provided in the middle of the surface of the movable seat 9. Placement plates 11 are respectively provided on both sides of the V-shaped groove 12 on the top surface of the movable seat 9. Pressing components for pressing and fixing the welding joint body 18 placed on the surface of the placement plate 11 are also symmetrically provided above the placement plate 11.

[0026] In this embodiment, the pressing component is used to press and fix the welding joint body 18 of different specifications to ensure that the welding joint body 18 will not be positioned under the pressure of the pressing mechanism during the bending test of the fixing frame 10, which would cause the test to fail.

[0027] The pressing assembly includes a fixing frame 10, which is 7-shaped. The fixing frames 10 are symmetrically fixed on both sides of the surface of the movable seat 9. A compression spring 14 is provided in the middle of the inner top surface of each of the two sets of fixing frames 10. The bottom end of the compression spring 14 is fixedly installed on the top surface of the upper pressure plate 13. The welding joint body 18 is placed between the placement plate 11 and the upper pressure plate 13.

[0028] Compression springs 14 are respectively installed on the inner top surface of the two sets of fixed frames 10, and the bottom ends of the compression springs 14 are respectively fixedly installed on the top surface of the upper pressure plate 13. The welding joint body 18 is placed between the placement plate 11 and the upper pressure plate 13. The rebound force of the compression springs 14 presses the upper pressure plate 13 to press and fix the welding joint body 18, so as to avoid the welding joint body 18 from being positioned when the lower pressing mechanism presses down and bends, which would lead to test failure.

[0029] Guide rods 15 are fixedly installed on both sides of the compression spring 14 on the top surface of the upper pressure plate 13. The top ends of the guide rods 15 penetrate the top surface of the fixed frame 10 and are slidably connected to the fixed frame 10. At the same time, guide rods 15 are symmetrically arranged on both sides of the compression spring 14 on the top surface of the upper pressure plate 13, and the top ends of the guide rods 15 penetrate the top surface of the fixed frame 10 and are slidably connected to the fixed frame 10. This allows the guide rods 15 to be slidably connected to the fixed frame 10 to determine the direction of the upper pressure plate 13 when it is raised or lowered, thereby increasing the stability of the upper pressure plate 13 when it is raised or lowered.

[0030] The top of the guide rod 15 is also provided with a limiting plate to prevent the guide rod 15 from falling off the top of the fixed frame 10. The diameter of the limiting plate is larger than the cross-sectional diameter of the guide rod 15. By setting the diameter of the limiting plate at the top of the guide rod 15 to be larger than the cross-sectional diameter of the guide rod 15, the position of the guide rod 15 and the fixed frame 10 can be restricted by the limiting plate, so as to prevent the guide rod 15 from sliding out of the fixed frame 10, causing equipment damage, making it impossible to determine the direction of the upper pressure plate 13 when it is raised and lowered, and thus affecting the bending fatigue test of the welded joint body 18.

[0031] The two end side walls of the two sets of upper pressure plates 13 are fixedly installed to the bottom of the connecting frame 16, and the top surface of the fixed frame 10 is provided with a lifting rod 17. The working end of the lifting rod 17 is fixedly installed to the inner top surface of the connecting frame 16.

[0032] Two sets of upper pressure plates 13 are also provided, with their ends fixedly installed at the bottom of the connecting frame 16. A lifting rod 17 is fixedly installed on the top surface of the fixed frame 10. The working end of the lifting rod 17 is fixedly installed on the inner top surface of the connecting frame 16, so that the connecting frame 16 can be lifted and lowered by the working end of the lifting rod 17, thereby driving the upper pressure plate 13 to rise, which makes it easier for workers to load and unload the welding joint body 18.

[0033] The inner top surface of the connecting frame 16, located above the fixed frame 10, is higher than the top surface of the limiting plate at the upper end of the guide rod 15 located above the fixed frame 10, and the two surfaces do not contact each other. At the same time, the inner top surface of the connecting frame 16 is higher than the top surface of the limiting plate at the top of the guide rod 15 to ensure that the lifting rod 17 will not collide with the limiting plate on the top surface of the guide rod 15 when it drives the connecting frame 16 to rise and fall, thus ensuring the safety of the equipment and increasing its service life.

[0034] A groove 6 is provided in the middle of the surface of the base 1. A threaded rod 8 is rotatably provided inside the groove 6. One end of the threaded rod 8 passes through one side wall of the base 1 and is keyed to the output shaft of the servo motor 7. The servo motor 7 is fixedly installed on the side wall of the base 1. The movable seat 9 is sleeved on the outside of the groove 6 and threadedly connected to the groove 6. The movable seat 9 is slidably disposed inside the groove 6 and slidably connected to the surface of the base 1.

[0035] By setting the movable seat 9 to be sleeved on the outside of the slide 6 and threadedly connected to the slide 6, the slide 6 can be rotated by starting the servo motor 7, thereby driving the movable seat 9 to move the fixed welding joint body 18 along the outer arc surface of the slide 6 on the surface of the base 1 to the bottom of the pressing mechanism. After the test is completed, the movable seat 9 is moved out from under the pressing mechanism by reversing the servo motor 7, which makes it convenient for workers to unload the welding joint body 18 without having to put their hands under the pressing mechanism to load and unload the welding joint body 18, thus ensuring the safety of workers' hands.

[0036] The pressing mechanism includes a bracket 2, which is fixedly mounted on the surface of the base 1. A hydraulic rod 4 is mounted on the top of the bracket 2. The working end of the hydraulic rod 4 passes through the top surface of the bracket 2 and is fixedly installed with the punch 5. A controller 3 is also mounted on the side wall of the bracket 2. The controller 3 controls the punch 5 at the bottom of the hydraulic rod 4 to press down and bend the welding joint body 18 placed inside the moving seat 9 below. The worker controls the pressing force of the punch 5 through the controller 3 to conduct a fatigue test on the welding joint body 18.

[0037] When the worker uses the device, the servo motor 7 is started by the controller 3, which drives the threaded rod 8 to rotate. This causes the movable seat 9, which is sleeved on the outside of the threaded rod 8, to move out of the support 2 and onto the outside of the support 2. Then, the working end inside the lifting rod 17 is raised by the controller 3, which causes the connecting frame 16 to lift the upper pressure plate 13. The tester places the welded joint above the placement plate 11 and lowers the working end of the lifting rod 17 by the controller 3. This causes the connecting frame 16 to press down and position the joint placed above the placement plate 11 by the upper pressure plate 13. After placement, the servo motor 7 is started in reverse to drive the movable seat 9 to move below the support 2. The upper hydraulic rod 4 then actuates the punch 5 to press down and bend and squeeze the welded joint.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A testing apparatus for welded joints, characterized in that: It includes a base (1), a pressing mechanism and a carrying mechanism. The pressing mechanism is disposed on one side of the surface of the base (1), and the carrying mechanism is slidably disposed on the upper surface of the base (1). The loading mechanism includes a movable seat (9), a V-shaped groove (12) is provided in the middle of the surface of the movable seat (9), and a placement plate (11) is provided on both sides of the V-shaped groove (12) on the top surface of the movable seat (9). A pressing component is also symmetrically provided above the placement plate (11) for pressing and fixing the welding joint body (18) placed on the surface of the placement plate (11).

2. The testing apparatus for welded joints according to claim 1, characterized in that: The pressing assembly includes a fixing frame (10), which is 7-shaped. The fixing frames (10) are symmetrically fixed on both sides of the surface of the movable seat (9). A compression spring (14) is provided in the middle of the inner top surface of each of the two sets of fixing frames (10). The bottom end of the compression spring (14) is fixedly installed on the top surface of the upper pressure plate (13). The welding joint body (18) is placed between the placement plate (11) and the upper pressure plate (13).

3. The testing apparatus for welded joints according to claim 2, characterized in that: The top surface of the upper pressure plate (13) is located on both sides of the compression spring (14) and guide rods (15) are fixedly installed respectively. The top ends of the guide rods (15) penetrate the top surface of the fixing frame (10) and are slidably connected to the fixing frame (10).

4. The testing apparatus for welded joints according to claim 3, characterized in that: The top of the guide rod (15) is also provided with a limiting plate to prevent the guide rod (15) from falling off the top of the fixing frame (10). The diameter of the limiting plate is larger than the cross-sectional diameter of the guide rod (15).

5. The testing apparatus for welded joints according to claim 4, characterized in that: The two end sidewalls of the two sets of upper pressure plates (13) are fixedly installed to the bottom of the connecting frame (16). The top surface of the fixed frame (10) is provided with a lifting rod (17), and the working end of the lifting rod (17) is fixedly installed to the inner top surface of the connecting frame (16).

6. The testing apparatus for welded joints according to claim 5, characterized in that: The inner top surface of the connecting frame (16) above the fixed frame (10) is higher than the top surface of the limiting plate provided at the upper end of the guide rod (15) above the fixed frame (10) and does not contact the top surface of the limiting plate.

7. The testing apparatus for welded joints according to claim 1, characterized in that: The base (1) is provided with a groove (6) in the middle of its surface. A threaded rod (8) is rotatably provided inside the groove (6). One end of the threaded rod (8) passes through one side wall of the base (1) and is keyed to the output shaft of the servo motor (7). The servo motor (7) is fixedly installed on the side wall of the base (1). The movable seat (9) is sleeved on the outside of the groove (6) and threadedly connected to the groove (6). The movable seat (9) is slidably disposed inside the groove (6) and slidably connected to the surface of the base (1).

8. The testing apparatus for welded joints according to claim 7, characterized in that: The pressing mechanism includes a bracket (2), which is fixedly mounted on the surface of the base (1). A hydraulic rod (4) is provided on the top of the bracket (2). The working end of the hydraulic rod (4) passes through the top surface of the bracket (2) and is fixedly installed with the punch (5). A controller (3) is also provided on the side wall of the bracket (2).

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