Device for detecting a welded joint

Abstract

The utility model provides a kind of detection device of welded joint, including frame body, clamping assembly, spraying assembly and pressurizing assembly, clamping assembly is arranged on frame body, clamping assembly is used to fix the relative position of round pipe, spraying assembly is arranged on frame body and is located above clamping assembly, spraying assembly is used to spray detection liquid to the welding interface of round pipe, pressurizing assembly is arranged on frame body, and pressurizing assembly is used to block the aperture of the two ends of round pipe.The detection device of welded joint described in the utility model replaces the welding condition of the welding interface observed by naked eye or magnifying glass in conventional use, by the joint action of internal air pressure and external detection liquid, more intuitive observation of the effectiveness of welded joint, reduce manual labor, improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of processing and welding of round tubes, and in particular relates to a detection device for welded joints. Background Technology

[0002] Welding technology has wide applications in modern industry, including construction, automotive, aerospace, and electronic equipment manufacturing. With the continuous development of new materials and processes, welding technology is also constantly innovating and progressing. For example, laser welding technology, due to its high energy density and rapid heating and cooling characteristics, is suitable for precision welding and welding of complex materials, and has been widely used in high-precision manufacturing fields such as aerospace and medical equipment. During the welding process, manual inspection of the weld joint using the naked eye or a magnifying glass is required. However, weld joints often produce defects such as porosity and cracks that are difficult to observe with the naked eye, resulting in wasted manpower and errors in inspection results that could affect safety. Utility Model Content

[0003] In view of this, the present invention aims to provide a welding joint inspection device to solve the problems of manpower waste and safety in the welding joint inspection process.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A welding joint testing device includes a frame, a clamping assembly, a spraying assembly, and a pressurizing assembly. The clamping assembly is mounted on the frame and is used to fix the relative position of a circular tube. The spraying assembly is mounted on the frame and located above the clamping assembly. The spraying assembly is used to spray a testing liquid onto the welding joint of the circular tube. The pressurizing assembly is mounted on the frame and is used to seal the openings at both ends of the circular tube.

[0006] Furthermore, the clamping assembly includes a left clamping unit and a right clamping unit. The left clamping unit and the right clamping unit have the same structure and are arranged opposite each other. The left clamping unit includes a fixed base and a clamp. One end of the fixed base is fixedly connected to the frame, and the other end of the fixed base is fixedly connected to the clamp. The outer periphery of the tube end can be detachably installed into the clamp.

[0007] Furthermore, the fixture includes a frame, a slider, a tightening screw, and a wheel. The frame has a U-shaped structure. One side wall of the frame is provided with a first threaded hole. The inner side of the other side wall of the frame and the inner side of the slider are respectively provided with anti-slip textures. The outer side of the slider is rotatably connected to one end of the tightening screw. The outer side of the tightening screw is threadedly connected to the first threaded hole. The other end of the tightening screw is equipped with a wheel.

[0008] Furthermore, the bottom of the U-shaped frame structure is provided with two baffles, which are arranged parallel to each other, and the two sides of the slider are slidably connected to the inner side of each baffle.

[0009] Furthermore, the spraying assembly includes a linear displacement unit and a circular motion unit. The linear displacement unit is mounted on the frame and located above the clamping assembly. The linear displacement unit includes a linear displacement module and a telescopic cylinder. The linear displacement module is used to drive the telescopic cylinder to move linearly, and the telescopic cylinder is used to drive the circular motion unit to move closer to or away from the circular tube.

[0010] Furthermore, the ring motion unit includes a bracket, a servo motor, a drive gear, an arc gear, and a nozzle. The bracket is fixedly installed on the movable end of the telescopic cylinder. A servo motor is installed on one side of the bracket. An arc gear is rotatably connected to the periphery of the bracket. A nozzle is installed on the arc gear. The nozzle is connected to a detection liquid source through a hose.

[0011] Furthermore, the bracket is rotatably connected to two drive gears via a connecting rod. The two drive gears are arranged opposite each other on both sides of the servo motor. The outer periphery of the two drive gears meshes with the outer periphery of the arc-shaped gear. A synchronous pulley is fixedly installed at one end of each drive gear. The outer periphery of each synchronous pulley is connected to the output shaft of the servo motor via a synchronous belt to form a synchronous transmission structure.

[0012] Furthermore, the pressurizing assembly includes a left pressurizing unit and a right pressurizing unit. The left pressurizing unit and the right pressurizing unit have the same structure and are arranged opposite each other. The left pressurizing unit includes a positioning structure and a sealing pressurizing structure. The positioning structure is used to adjust the relative position of the sealing pressurizing structure and the end of the circular tube.

[0013] Furthermore, the positioning structure includes a moving platform and a forward cylinder. The two ends of the moving platform are vertically slidably connected to the frame, and the two ends of the moving platform are respectively provided with second threaded holes. Screws are threaded into the second threaded holes, and one end of the screw abuts against the frame to limit the relative position of the moving platform on the frame. The upper end of the moving platform is provided with a slide groove, and one side of the forward cylinder is provided with a slide table. The slide table is laterally slidably connected to the slide groove. A sealing and pressurizing structure is installed on the movable end of the forward cylinder.

[0014] Furthermore, the sealing and pressurizing structure includes a support, an adapter head, and a pressure inlet pipe. The support is fixedly installed on the movable end of the forward cylinder. The adapter head is provided on the support and has a frustum structure. The outer periphery of the adapter head can abut against the inner ring of the pipe end of the circular tube. The pressure inlet pipe is provided in the middle of the adapter head. One end of the pressure inlet pipe is connected to a pressurizing pump, and the other end of the pressure inlet pipe is connected to the inside of the circular tube.

[0015] Compared with the prior art, the welding joint detection device of this utility model has the following advantages:

[0016] (1) The detection device for the welded joint described in this utility model is equipped with a clamping component, which can fix the position of the round tube, prevent the round tube from shifting during detection, and improve work efficiency.

[0017] (2) The detection device for the welded joint described in this utility model is equipped with a ring motion unit, which can finely adjust the direction of the nozzle, solve the problem of manual calibration required due to deviation in the position of the welded joint, reduce manual labor, and improve work efficiency.

[0018] (3) The detection device for the welded joint described in this utility model is equipped with a sealing and pressurizing structure, which is used to seal the openings at both ends of the round tube, pressurize the inside with air, and observe the state of the detection liquid at the welded joint outside the round tube to determine whether the welded joint contains micro-cracks, thereby improving product quality and safety. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the welding joint detection device described in this embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the clamping assembly described in an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the clamp described in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the spraying assembly described in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the ring motion unit described in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the pressurization component described in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the positioning structure described in an embodiment of the present utility model;

[0027] Figure 8 This is a cross-sectional schematic diagram of the sealing and pressurizing structure described in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Frame; 2-Clamping assembly; 21-Left clamping unit; 211-Fixed base; 212-Clamp; 2121-Frame; 21211-First threaded hole; 21212-Baffle; 2122-Slider; 2123-Tightening screw; 2124-Wheel; 22-Right clamping unit; 3-Spraying assembly; 31-Linear displacement unit; 311-Linear displacement module; 312-Telescopic cylinder; 32-Circular motion unit; 321-Bracket; 3 22-Servo motor; 323-Drive gear; 324-Arc gear; 325-Nozzle; 326-Connecting rod; 4-Pressure assembly; 41-Left pressure unit; 411-Positioning structure; 4111-Moving platform; 41111-Second threaded hole; 41112-Slide groove; 4112-Forward cylinder; 41121-Slide table; 412-Sealing pressure structure; 4121-Support; 4122-Adapter head; 4123-Pressure inlet pipe; 5-Round tube Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] like Figure 1 As shown, the welding joint inspection device includes a frame 1, a clamping assembly 2, a spraying assembly 3, and a pressurizing assembly 4. The clamping assembly 2 is mounted on the frame 1 and is used to fix the relative position of the round pipe 5. The spraying assembly 3 is mounted on the frame 1 and located above the clamping assembly 2. The spraying assembly 3 is used to spray inspection liquid onto the welding joint of the round pipe 5. The pressurizing assembly 4 is mounted on the frame 1 and is used to seal the openings at both ends of the round pipe 5. The spraying assembly 3 facilitates the spraying of inspection liquid onto the welding joint of the round pipe, amplifies the inspection effect, reduces the observation time of the welding joint, and improves work efficiency.

[0035] like Figure 2 As shown, the clamping assembly 2 includes a left clamping unit 21 and a right clamping unit 22. The left clamping unit 21 and the right clamping unit 22 have the same structure and are arranged opposite each other. The left clamping unit 21 includes a fixed base 211 and a clamp 212. One end of the fixed base 211 is fixedly connected to the frame 1, and the other end of the fixed base 211 is fixedly connected to the clamp 212. The outer periphery of the tube end of the round tube 5 can be detachably installed into the clamp 212. The left clamping unit 21 and the right clamping unit 22 can fix the axial position of the round tube 5 to prevent it from shifting, thereby improving work efficiency.

[0036] like Figure 3 As shown, the fixture 212 includes a frame 2121, a slider 2122, a tightening screw 2123, and a wheel 2124. The frame 2121 has a U-shaped structure. One side wall of the frame 2121 is provided with a first threaded hole 21211. The inner side of the other side wall of the frame 2121 and the inner side of the slider 2122 are respectively provided with anti-slip textures. The outer side of the slider 2122 is rotatably connected to one end of the tightening screw 2123. The outer thread of the tightening screw 2123 is connected to the first threaded hole 21211. The other end of the tightening screw 2123 is equipped with a wheel 2124. By rotating the wheel 2124, the relative position of the slider 2122 on the frame 2121 is adjusted to clamp or loosen the round tube 5, so that the position of the round tube 5 does not shift when inspecting the welded joint of the round tube 5, thereby improving work efficiency.

[0037] like Figure 3 As shown, the bottom of the U-shaped frame 2121 is provided with two baffles 21212, and the two baffles 21212 are arranged parallel to each other. The two sides of the slider 2122 are slidably connected to the inner side of each baffle 21212. The baffles 21212 can limit the movement trajectory of the slider 2122, reduce the failure of the clamp 212 due to the positional deviation of the slider 2122, extend the service life of the equipment, reduce manual labor, and improve work efficiency.

[0038] like Figure 4As shown, the spraying assembly 3 includes a linear displacement unit 31 and a circular motion unit 32. The linear displacement unit 31 is mounted on the frame 1 and located above the clamping assembly 2. The linear displacement unit 31 includes a linear displacement module 311 and a telescopic cylinder 312. The linear displacement module 311 is used to drive the telescopic cylinder 312 to move linearly. The telescopic cylinder 312 is used to drive the circular motion unit 32 to move closer to or away from the circular tube 5. The linear displacement module 311 provided in this utility model can be any of a cylinder, a hydraulic cylinder, or a lead screw linear module. This embodiment adopts the lead screw linear module of the prior art. The linear displacement module 311 drives the circular motion unit 32 to move linearly along the welding joint direction, thereby improving work efficiency.

[0039] like Figure 5 As shown, the ring motion unit 32 includes a bracket 321, a servo motor 322, a drive gear 323, an arc gear 324, and a nozzle 325. The bracket 321 is fixedly installed on the movable end of the telescopic cylinder 312. The servo motor 322 is provided on one side of the bracket 321. The arc gear 324 is rotatably connected to the periphery of the bracket 321. The nozzle 325 is provided on the arc gear 324. The nozzle 325 is connected to the detection liquid source through a hose.

[0040] like Figure 5 As shown, the bracket 321 is rotatably connected to two drive gears 323 via a connecting rod 326. The two drive gears 323 are arranged opposite each other on both sides of the servo motor 322. The outer periphery of the two drive gears 323 meshes with the outer periphery of the arc gear 324. A synchronous pulley is fixedly installed at one end of each drive gear 323. The outer periphery of each synchronous pulley forms a synchronous transmission structure with the output shaft of the servo motor 322 via a synchronous belt. The ring motion unit 32 can adjust the radial position of the nozzle 325. When the weld joint is bent or the weld joint of the round tube 5 is not placed directly above, the position of the nozzle 325 can be directly adjusted to ensure that the detection liquid accurately covers the weld joint, reducing manual labor and improving work efficiency.

[0041] like Figure 6 As shown, the pressurizing assembly 4 includes a left pressurizing unit 41 and a right pressurizing unit 42. The left pressurizing unit 41 and the right pressurizing unit 42 have the same structure and are arranged opposite each other. The left pressurizing unit 41 includes a positioning structure 411 and a sealing pressurizing structure 412. The positioning structure 411 is used to adjust the relative position of the sealing pressurizing structure 412 and the pipe end of the circular pipe 5. The left pressurizing unit 41 and the right pressurizing unit 42 can apply pressure to the inside of the circular pipe at the same time, making the inspection of the welded joint of the circular pipe more intuitive, reducing inspection time, reducing manpower waste, and improving work efficiency.

[0042] like Figure 7As shown, the positioning structure 411 includes a moving platform 4111 and a forward cylinder 4112. Both ends of the moving platform 4111 are vertically slidably connected to the frame 1, and both ends of the moving platform 4111 are respectively provided with second threaded holes 41111. Screws are internally threaded into the second threaded holes 41111, with one end of the screw abutting against the frame 1 to limit the relative position of the moving platform 4111 on the frame 1. A sliding groove 41112 is provided at the upper end of the moving platform 4111, and a groove 41112 is provided on one side of the forward cylinder 4112. The slide table 41121 is laterally slidably connected to the slide groove 41112. The moving end of the forward cylinder 4112 is equipped with a sealing and pressurizing structure 412. The positioning structure 411 moves laterally and longitudinally to adjust the relative position of the sealing and pressurizing structure 412, ensuring that the center of the sealing and pressurizing structure 412 and the circular tubes of different diameters being tested are in the same position. The forward cylinder 4112 pushes and adjusts the sealing and pressurizing structure 412 to seal both ends of the circular tubes, thereby improving equipment utilization and reducing production costs.

[0043] like Figure 8 As shown, the sealing and pressurizing structure 412 includes a support 4121, an adapter 4122, and a pressure inlet pipe 4123. The support 4121 is fixedly installed on the movable end of the forward cylinder 4112. The adapter 4122 is provided on the support 4121, and the adapter 4122 has a frustum structure. The outer periphery of the adapter 4122 can abut against the inner ring of the pipe end of the circular tube 5. The pressure inlet pipe 4123 is provided in the middle of the adapter 4122. One end of the pressure inlet pipe 4123 is connected to a pressurizing pump, and the other end of the pressure inlet pipe 4123 is connected to the inside of the circular tube 5. The outer periphery of the adapter 4122 is made of soft silicone material. The forward cylinder 4112 pushes the adapter 4122 into the inside of the circular tube 5 to seal the two ends of the circular tube 5. The pressure is applied to the inside of the circular tube 5 through the pressure inlet pipe 4123 to detect the welded joint, amplify the detection results, reduce detection time, save manpower, and improve work efficiency.

[0044] Working process of the welding joint inspection device:

[0045] Place the welded joint of the round tube 5 upward on the fixture 212, rotate the wheel 2124 to drive the slider 2122 to move, clamp the round tube 5, adjust the position of the spraying component, move the nozzle 325 to one end of the welded joint and close to a certain position of the welded joint, and at the same time, the nozzle 325 follows the linear displacement unit 31 to move linearly and spray the test liquid onto the welded joint. Adjust the positioning component 411 to ensure that the center of the forward cylinder 4112 and the round tube 5 being tested are on the same axis. The forward cylinder 4112 pushes the adapter head 4122 into the round tube 5 to seal the openings at both ends of the round tube 5. After the two ends are sealed, the pressure inlet pipe 4123 pressurizes the inside of the round tube 5. The degree of welding of the welded joint is determined by observing whether there are bubbles or other changes in the test liquid outside the welded joint.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing device for welded joints, characterized in that: The device includes a frame (1), a clamping assembly (2), a spraying assembly (3), and a pressurizing assembly (4). The clamping assembly (2) is mounted on the frame (1) and is used to fix the relative position of the round tube (5). The spraying assembly (3) is mounted on the frame (1) and located above the clamping assembly (2). The spraying assembly (3) is used to spray the test liquid onto the welding joint of the round tube (5). The pressurizing assembly (4) is mounted on the frame (1) and is used to seal the openings at both ends of the round tube (5).

2. The detection device for welded joints according to claim 1, characterized in that: The clamping assembly (2) includes a left clamping unit (21) and a right clamping unit (22). The left clamping unit (21) and the right clamping unit (22) have the same structure and are arranged opposite each other. The left clamping unit (21) includes a fixed base (211) and a clamp (212). One end of the fixed base (211) is fixedly connected to the frame (1), and the other end of the fixed base (211) is fixedly connected to the clamp (212). The outer periphery of the tube end of the round tube (5) can be detachably installed into the clamp (212).

3. The detection device for welded joints according to claim 2, characterized in that: The fixture (212) includes a frame (2121), a slider (2122), a tightening screw (2123), and a wheel (2124). The frame (2121) is a U-shaped structure. A first threaded hole (21211) is provided on one side wall of the frame (2121). Anti-slip textures are provided on the inner side of the other side wall of the frame (2121) and the inner side of the slider (2122). One end of the tightening screw (2123) is rotatably connected to the outer side of the slider (2122). The outer thread of the tightening screw (2123) is connected to the first threaded hole (21211). The wheel (2124) is installed on the other end of the tightening screw (2123).

4. The detection device for welded joints according to claim 3, characterized in that: The bottom of the U-shaped frame (2121) is provided with two baffles (21212), and the two baffles (21212) are arranged parallel to each other. The two sides of the slider (2122) are slidably connected to the inner side of each baffle (21212).

5. The detection device for welded joints according to claim 1, characterized in that: The spraying assembly (3) includes a linear displacement unit (31) and a circular motion unit (32). The linear displacement unit (31) is mounted on the frame (1) and located above the clamping assembly (2). The linear displacement unit (31) includes a linear displacement module (311) and a telescopic cylinder (312). The linear displacement module (311) is used to drive the telescopic cylinder (312) to move linearly. The telescopic cylinder (312) is used to drive the circular motion unit (32) to move closer to or away from the circular tube (5).

6. The testing device for welded joints according to claim 5, characterized in that: The ring motion unit (32) includes a bracket (321), a servo motor (322), a drive gear (323), an arc gear (324), and a nozzle (325). The bracket (321) is fixedly installed on the movable end of the telescopic cylinder (312). The servo motor (322) is provided on one side of the bracket (321). The arc gear (324) is rotatably connected to the periphery of the bracket (321). The nozzle (325) is provided on the arc gear (324). The nozzle (325) is connected to the detection liquid source through a hose.

7. The detection device for welded joints according to claim 6, characterized in that: The bracket (321) is rotatably connected to two drive gears (323) via a connecting rod (326). The two drive gears (323) are arranged opposite each other on both sides of the servo motor (322). The outer periphery of the two drive gears (323) is meshed with the outer periphery of the arc gear (324). A synchronous pulley is fixedly installed at one end of each drive gear (323). The outer periphery of each synchronous pulley is connected to the output shaft of the servo motor (322) via a synchronous belt to form a synchronous transmission structure.

8. The detection device for welded joints according to claim 1, characterized in that: The pressurizing assembly (4) includes a left pressurizing unit (41) and a right pressurizing unit (42). The left pressurizing unit (41) and the right pressurizing unit (42) have the same structure and are arranged opposite each other. The left pressurizing unit (41) includes a positioning structure (411) and a sealing pressurizing structure (412). The positioning structure (411) is used to adjust the relative position of the sealing pressurizing structure (412) and the pipe end of the round pipe (5).

9. The detection device for welded joints according to claim 8, characterized in that: The positioning structure (411) includes a moving platform (4111) and a forward cylinder (4112). The two ends of the moving platform (4111) are vertically slidably connected to the frame (1), and the two ends of the moving platform (4111) are respectively provided with second threaded holes (41111). The second threaded holes (41111) are threaded with screws. One end of the screw abuts against the frame (1) to limit the relative position of the moving platform (4111) on the frame (1). The upper end of the moving platform (4111) is provided with a slide groove (41112). The side of the forward cylinder (4112) is provided with a slide table (41121). The slide table (41121) is horizontally slidably connected to the slide groove (41112). The movable end of the forward cylinder (4112) is equipped with a sealing and pressurizing structure (412).

10. The detection device for welded joints according to claim 8, characterized in that: The sealing and pressurizing structure (412) includes a support (4121), an adapter (4122), and a pressure inlet pipe (4123). The support (4121) is fixedly installed on the movable end of the forward cylinder (4112). The adapter (4122) is provided on the support (4121), and the adapter (4122) is a frustum structure. The outer periphery of the adapter (4122) can abut against the inner ring of the pipe end of the circular tube (5). The pressure inlet pipe (4123) is provided in the middle of the adapter (4122). One end of the pressure inlet pipe (4123) is connected to a pressurizing pump, and the other end of the pressure inlet pipe (4123) is connected to the inside of the circular tube (5).

Images