An automatic tubing gas tightness testing mechanism

Abstract

The application discloses a kind of oil pipe gas tightness automatic testing mechanism, belong to spare and parts detection technical field, the mechanism of this aspect includes multi-axis robot, and the test assembly is connected to the execution end of multi-axis robot, and the test assembly includes the connecting base connected with the execution end of multi-axis robot, and the inflation assembly is connected on connecting base, and the inflation assembly includes quick connector, and the air pipe is connected with quick connector, and the first limiting plate and the second limiting plate that are parallel to each other are set outside quick connector, and there is elastic column between the first limiting plate and the second limiting plate.The mechanism of the application can realize oil pipe leather sheath automatic disassembly, inflation joint butt joint, gas tightness automatic detection, solve the technical problems such as low degree of automation, great operation difficulty, poor butt precision, low detection efficiency and consistency in the existing oil pipe gas tightness detection.

Description

Technical Field

[0001] This invention relates to the field of component testing technology, specifically to an automatic testing mechanism for the airtightness of oil pipes. Background Technology

[0002] Currently, the airtightness testing of oil pipes mostly relies on manual operation or simple tooling. This requires manual removal of the sheath from the oil pipe end, followed by aligning the inflation connector with the oil pipe thread for inflation. After testing, the sheath must be manually reattached to the oil pipe end, resulting in a very low level of automation in the entire testing process. Furthermore, some related fluid component testing technologies are designed for rigid valves and connectors. For example, EP4433701A1 discloses a test method for the check valve of an internal combustion engine injection valve, applicable to the sealing test of rigid injection valves with plungers and one-way valves. Its test object is an integrated rigid valve component, requiring no removal or installation of flexible sheaths. Another example is WO2021104423A1, which discloses a development and testing method and system for high-speed switching valves in automotive braking systems. This method tests the performance of high-speed switching valves under high and low temperature environments, using various fluid sensors to detect pressure and flow. Its testing tooling is designed for the fixation and fluid transport of rigid switching valves, and it does not address the automatic operation of flexible accessories. Therefore, there is room for improvement in the automatic operation of flexible accessories. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic testing mechanism for oil pipe air tightness, which can realize automatic disassembly and assembly of oil pipe sheaths, connection of air-filled joints, and automated air tightness testing, thereby solving the technical problems of low automation, high operation difficulty, poor connection accuracy, low testing efficiency and consistency in existing oil pipe air tightness testing.

[0004] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: an automatic testing mechanism for the airtightness of oil pipes, comprising a multi-axis robot, a testing component connected to the execution end of the multi-axis robot, a connecting base connected to the execution end of the multi-axis robot, an inflation component connected to the connecting base, the inflation component comprising a quick connector, an air pipe connected to the quick connector, and a first limiting plate and a second limiting plate arranged parallel to each other on the outside of the quick connector, with an elastic column between the first limiting plate and the second limiting plate. Using a multi-axis robot to drive the testing component to achieve precise displacement adjustment is more efficient and accurate than manual labor. Furthermore, by setting the first and second limiting plates parallel to each other on the outside of the quick connector, the quick connector is guided and limited, avoiding radial offset during docking. At the same time, the elastic column between the two limiting plates can generate flexible expansion and contraction compensation, thereby offsetting the axial displacement error caused by the machining tolerance and placement deviation of the oil pipe, allowing the quick connector to adaptively fit the oil pipe thread to complete the docking, ensuring airtightness. This solves the problems of low efficiency and large error of manual docking.

[0005] According to one embodiment of the present invention, the connecting base has at least two mounting base surfaces, and a connecting base plate is provided on the mounting base surfaces. The mounting base surfaces are angled together, so that the gripper cylinder and the inflation assembly are installed on the same connecting base respectively, allowing the automatic disassembly and assembly of the sleeve and the inflation connector to be integrated into the test assembly and driven by a multi-axis robot. This avoids the need to adjust the workpiece position. At the same time, the angled mounting base surfaces help to adapt to the relative position of the oil pipe sleeve and the thread, so that the working angle of the gripper cylinder and the inflation assembly is more in line with the oil pipe structure and avoids interference.

[0006] According to one embodiment of the present invention, the second limiting plate and the connecting base plate are connected by a support block; a limiting rod is also provided between the first limiting plate and the second limiting plate, one end of the limiting rod being detachably connected to the first limiting plate, and the other end being in contact with or separated from the second limiting plate. Connecting the second limiting plate and the connecting base plate with the support block strengthens the connection rigidity between the inflation assembly and the testing assembly, preventing component shaking or displacement when the quick connector is subjected to force. Simultaneously, the detachable limiting rod between the first and second limiting plates limits the axial docking stroke of the quick connector by adjusting the contact or separation state between the limiting rod and the second limiting plate, preventing damage to the quick connector or oil pipe threads due to over-dock. Furthermore, the detachable design of the limiting rod can adapt to the docking stroke requirements of oil pipes of different specifications.

[0007] According to one embodiment of the present invention, at least one connecting base plate is equipped with a gripper cylinder. The gripper cylinder is used to grip the soft leather sleeve to complete the automated insertion and removal, replacing manual operation and avoiding deformation and tearing of the leather sleeve caused by uneven force application.

[0008] According to one embodiment of the present invention, a limiting component for clamping and limiting the workpiece is provided on the side of the multi-axis robot. This component is used to clamp and limit the workpiece, preventing the workpiece from shaking or shifting when the multi-axis robot drives the test component to perform the sleeve disassembly and inflating docking actions. This ensures that the gripper cylinder can be aligned with the oil pipe sleeve and the quick connector can dock with the oil pipe thread, eliminating operational deviations caused by workpiece displacement and ensuring the operational accuracy of sleeve disassembly and inflation testing.

[0009] According to one embodiment of the present invention, the limiting component includes a mounting platform for placing a workpiece, the mounting platform being detachably connected to the workpiece via fixing bolts. The mounting platform ensures the flatness of the workpiece placement, and the fixing bolts rigidly lock and fix the workpiece to prevent shaking and displacement of the workpiece when the test component performs the sleeve disassembly and assembly, inflation and docking operations.

[0010] According to one embodiment of the present invention, a limiting disassembly plate is connected to the bottom of the mounting platform, and a limiting base plate is detachably connected to the bottom of the limiting disassembly plate. The limiting base plate has anti-collision blocks on its side. The mounting platform and the limiting base plate can be disassembled and replaced separately without disassembling the limiting components as a whole. This simplifies the tooling adjustment when adapting workpieces of different specifications. At the same time, the anti-collision blocks added to the side of the limiting base plate are used to buffer the impact force of accidental collisions when the multi-axis robot drives the test components to operate, and prevent the limiting base plate and the mounting platform from deforming or shifting due to collisions.

[0011] According to one embodiment of the present invention, the side of the mounting table has an auxiliary platform for assisting in the clamping of the workpiece, and the top of the auxiliary platform has an extension plate that can contact the workpiece or be connected by fasteners.

[0012] The extension plate can directly contact the workpiece to form a flexible limit, or it can be rigidly locked and limited by fasteners. This allows it to cooperate with the fixing bolts of the mounting platform to form a multi-point clamping and limiting structure, restricting the radial and axial displacement of the workpiece, avoiding the shaking and swaying of the workpiece during the inspection operation, and also making it easy to adjust the clamping method according to the specifications of the workpiece without the need to replace the auxiliary limiting components.

[0013] According to one embodiment of the present invention, a limiting component is mounted on a movable base, a base plate is provided below the movable base, a track is provided on the base plate, and a sliding member is provided at the bottom of the movable base to be assembled with the track. The movable base can slide linearly along the track, thereby driving the limiting component to adjust its spatial position. This adapts to the detection and alignment requirements of workpieces of different lengths and specifications. At the same time, the layout and switching of multiple workstations can be realized by adjusting the position of the movable base, which, together with the working range of the multi-axis robot, improves the working efficiency of the equipment.

[0014] According to one embodiment of the present invention, the side of the substrate has a limiter corresponding to the track position. The limiter is used to limit the sliding stroke and stop position of the moving base to prevent the workpiece position from shifting due to excessive sliding stroke. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an automatic oil pipe air tightness testing mechanism according to the present invention; Figure 2 This is a schematic diagram of the connection scheme between the multi-axis robot and the testing component of the present invention; Figure 3This is a first-view schematic diagram of the test component scheme of the present invention; Figure 4 This is a second-view schematic diagram of the test component scheme of the present invention; Figure 5 This is a schematic diagram of the quick connector of the present invention; Figure 6 This is a schematic diagram of the connection scheme between the workpiece and the limiting member according to the present invention; Figure 7 This is a schematic diagram of the connection scheme between the workpiece, the fixing bolt, and the auxiliary platform of the present invention; Figure 8 This is a schematic diagram of the connection scheme between the movable base and the substrate of the present invention; Figure 9 This is a schematic diagram of the internal structure of the movable base of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 10. Base plate; 11. Track; 12. Connecting block; 13. Limiter; 20. Movable base; 21. Positioning stage; 22. Clamping component; 23. Side plate; 30. Limiting assembly; 31. Limiting base plate; 32. Limiting disassembly plate; 33. Mounting platform; 34. Anti-collision block; 35. Fixing bolt; 36. Auxiliary platform; 40. Test assembly; 41. Connecting base; 42. Inflatable assembly; 421. Support block; 422. First limiting plate; 423. Limiting rod; 424. Quick connector; 425. Elastic column; 426. Second limiting plate; 43. Gripper cylinder; 44. Connecting base plate; 50. Multi-axis robot; 60. Workpiece. Detailed Implementation

[0018] 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 scope of protection of the present invention.

[0019] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Example 1: As shown in the attached figure Figure 1 - Appendix Figure 7As shown, an automatic testing mechanism for the airtightness of oil pipes includes a multi-axis robot 50. The execution end of the multi-axis robot 50 is connected to a testing component 40. The testing component 40 includes a connecting base 41 connected to the execution end of the multi-axis robot 50. An inflation component 42 is connected to the connecting base 41. The inflation component 42 includes a quick connector 424. An air pipe is connected to the quick connector 424. A first limiting plate 422 and a second limiting plate 426 arranged parallel to each other are sleeved on the outside of the quick connector 424. An elastic column 425 is between the first limiting plate 422 and the second limiting plate 426. Using a multi-axis robot 50 to drive the test component 40 to achieve precise displacement adjustment is more efficient and accurate than manual labor. Furthermore, by setting a first limiting plate 422 and a second limiting plate 426 that are parallel to each other on the outside of the quick connector 424, the quick connector 424 is guided and limited to avoid radial displacement during docking. At the same time, the elastic column 425 between the two limiting plates can generate flexible expansion and contraction compensation, thereby offsetting the axial displacement error caused by the machining tolerance and placement deviation of the oil pipe. This allows the quick connector 424 to adaptively fit the oil pipe thread to complete the docking and ensure airtightness. This solves the problems of low efficiency and large error of manual docking.

[0021] The connecting base 41 has at least two mounting surfaces, with a connecting base plate 44 on each surface. The mounting surfaces are angled together, allowing the gripper cylinder 43 and the inflation assembly 42 to be mounted on the same connecting base 41. This integrates the automatic disassembly and assembly of the sleeve and the inflation connector onto the test assembly 40, driven by the multi-axis robot 50. This avoids the need to adjust the position of the workpiece 60. At the same time, the angled mounting surfaces help to adapt to the relative positions of the tubing sleeve and the thread, allowing the working angles of the gripper cylinder 43 and the inflation assembly 42 to better fit the tubing structure and avoid interference.

[0022] The second limiting plate 426 is connected to the connecting base plate 44 via a support block 421. A limiting rod 423 is also provided between the first limiting plate 422 and the second limiting plate 426. One end of the limiting rod 423 is detachably connected to the first limiting plate 422, and the other end is in contact with or separate from the second limiting plate 426. The support block 421 connects the second limiting plate 426 and the connecting base plate 44 to enhance the connection rigidity between the inflation assembly 42 and the test assembly 40, preventing the components from shaking or shifting when the quick connector 424 is subjected to force. At the same time, the detachable limiting rod 423 is provided between the first limiting plate 422 and the second limiting plate 426. By adjusting the contact or separation state between the limiting rod 423 and the second limiting plate 426, the axial docking stroke of the quick connector 424 is limited, preventing damage to the quick connector 424 or the oil pipe threads due to over-docking. The detachable design of the limiting rod 423 can adapt to the docking stroke requirements of oil pipes of different specifications.

[0023] At least one connecting base plate 44 is equipped with a gripper cylinder 43. The gripper cylinder 43 is used to grip the soft leather sleeve to complete the automatic insertion and removal, replacing manual operation and avoiding deformation and tearing of the leather sleeve caused by uneven force.

[0024] The multi-axis robot 50 is provided with a limiting component 30 on the side for clamping and limiting the workpiece 60. This component is used to clamp and limit the workpiece 60, preventing the workpiece 60 from shaking or shifting when the multi-axis robot 50 drives the test component 40 to perform the sleeve disassembly, assembly, and inflation docking actions. This ensures that the gripper cylinder 43 can be aligned with the oil pipe sleeve and the quick connector 424 can be docked with the oil pipe thread, eliminating operational deviations caused by workpiece displacement and ensuring the operational accuracy of sleeve disassembly, assembly, inflation testing, and other operations.

[0025] The limiting assembly 30 includes a mounting platform 33 for placing the workpiece 60. The mounting platform 33 is detachably connected to the workpiece 60 by fixing bolts 35. The mounting platform 33 is used to ensure the flatness of the workpiece 60, and the fixing bolts 35 are used to rigidly lock and fix the workpiece 60 to prevent the workpiece 60 from shaking or displacing when the test assembly 40 performs the sleeve removal and inflation docking actions.

[0026] The bottom of the mounting platform 33 is connected to a limiting disassembly plate 32, and the bottom of the limiting disassembly plate 32 is detachably connected to a limiting base plate 31. The limiting base plate 31 has anti-collision blocks 34 on its side. The mounting platform 33 and the limiting base plate 31 can be disassembled and replaced separately without disassembling the limiting component 30 as a whole. This simplifies the tooling adjustment when adapting workpieces 60 of different specifications. At the same time, the anti-collision blocks 34 added to the side of the limiting base plate 31 are used to buffer the accidental collision impact force when the multi-axis robot 50 drives the test component 40 to work, and prevent the limiting base plate 31 and the mounting platform 33 from being deformed or displaced due to collision.

[0027] The mounting table 33 has an auxiliary platform 36 on its side for auxiliary clamping of the workpiece 60. The top of the auxiliary platform 36 has an extension plate that can contact the workpiece 60 or be connected by fasteners.

[0028] The extension plate can directly contact the workpiece 60 to form a flexible limit, or it can be rigidly locked and limited by fasteners. This allows it to cooperate with the fixing bolts 35 of the mounting platform 33 to form a multi-point clamping and limiting structure, restricting the radial and axial displacement of the workpiece 60, avoiding the shaking and swaying of the workpiece 60 during the inspection operation, and also facilitating the adjustment of the clamping method according to the specifications of the workpiece 60 without the need to replace the auxiliary limiting components.

[0029] The limiting component 30 is mounted on the movable base 20. A base plate 10 is located below the movable base 20, and a track 11 is mounted on the base plate 10. A sliding component that is fitted to the track 11 is located at the bottom of the movable base 20. The movable base 20 can slide linearly along the track 11, causing the limiting component 30 to adjust its spatial position. This adapts to the detection and alignment requirements of workpieces 60 of different lengths and specifications. Furthermore, adjusting the position of the movable base 20 allows for the layout and switching of multiple workstations, thus improving the operating efficiency of the equipment in conjunction with the working range of the multi-axis robot 50.

[0030] The side of the substrate 10 has a limiter 13 corresponding to the position of the track 11. The limiter 13 is used to limit the sliding stroke and stop position of the movable base 20 to prevent the workpiece 60 from shifting due to excessive sliding stroke.

[0031] Example 2: See appendix Figure 1 As shown, in this embodiment there are at least two substrates 10, each substrate 10 is provided with a movable base 20, a limiting component 30, a multi-axis robot 50 and a testing component 40, so as to realize multi-station detection.

[0032] Adjacent substrates 10 are connected by connecting blocks 12.

[0033] By setting up at least two base plates 10, and each base plate 10 is equipped with a moving base 20, a limiting component 30, a multi-axis robot 50 and a testing component 40, the synchronous parallel testing of multiple oil pipes can be achieved, thereby improving the overall testing efficiency.

[0034] Example 3: See appendix Figure 1 Appendix Figure 8 - Appendix Figure 9 As shown, the movable base 20 has a receiving cavity that allows the installation of the limiting component 30. Inside the receiving cavity is a positioning platform 21 detachably connected to the movable base 20. The positioning platform 21 is detachably connected to the limiting base plate 31 of the limiting component 30. A clamping member 22 is located on the side of the receiving cavity, providing auxiliary clamping and support for the positioning platform 21 to prevent it from shaking or shifting. A vertically arranged side plate 23 is also located on the side of the movable base 20, and a vertically arranged upright plate is located on the limiting base plate 31. The side plate 23 can be connected to the upright plate via fasteners. The clamping member 22 on the side of the receiving cavity provides lateral auxiliary clamping for the positioning platform 21 to prevent it from shaking due to operational vibrations. The side plate 23 on the side of the movable base 20 and the upright plate of the limiting base plate 31 are locked together with fasteners, further strengthening the connection rigidity between the limiting component 30 and the movable base 20 and preventing displacement or swaying during operation.

[0035] It should also 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, and are only for the convenience of describing this application 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 on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," etc., 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0037] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. An automatic testing mechanism for the airtightness of oil pipes, comprising a multi-axis robot (50), wherein the execution end of the multi-axis robot (50) is connected to a testing component (40), characterized in that, The test component (40) includes a connection base (41) connected to the execution end of a multi-axis robot (50). An inflation component (42) is connected to the connection base (41). The inflation component (42) includes a quick connector (424). An air tube is connected to the quick connector (424). A first limiting plate (422) and a second limiting plate (426) are provided on the outside of the quick connector (424) and are arranged in parallel with each other. An elastic column (425) is provided between the first limiting plate (422) and the second limiting plate (426).

2. The automatic oil pipe airtightness testing mechanism according to claim 1, characterized in that, The connecting base (41) has at least two mounting base surfaces, and a connecting base plate (44) is provided on the mounting base surfaces. The mounting base surfaces are at an angle to each other.

3. The automatic oil pipe airtightness testing mechanism according to claim 2, characterized in that, The second limiting plate (426) is connected to the connecting base plate (44) by a support block (421); A limiting rod (423) is provided between the first limiting plate (422) and the second limiting plate (426). One end of the limiting rod (423) is detachably connected to the first limiting plate (422), and the other end is in contact with or separated from the second limiting plate (426).

4. The automatic oil pipe airtightness testing mechanism according to claim 2, characterized in that, At least one connecting base plate (44) is equipped with a gripper cylinder (43).

5. The automatic oil pipe airtightness testing mechanism according to claim 1, characterized in that, The multi-axis robot (50) is provided with a limiting component (30) on its side for clamping and limiting the workpiece (60).

6. The automatic oil pipe airtightness testing mechanism according to claim 5, characterized in that, The limiting assembly (30) includes a mounting platform (33) for placing the workpiece (60), the mounting platform (33) being detachably connected to the workpiece (60) by fixing bolts (35).

7. The automatic oil pipe airtightness testing mechanism according to claim 6, characterized in that, The mounting platform (33) is connected to a limiting disassembly plate (32) at the bottom. The limiting disassembly plate (32) is detachably connected to a limiting base plate (31) at the bottom. The limiting base plate (31) has anti-collision blocks (34) on its side.

8. The automatic oil pipe airtightness testing mechanism according to claim 6, characterized in that, The mounting platform (33) has an auxiliary platform (36) on its side for assisting in clamping the workpiece (60). The top of the auxiliary platform (36) has an extension plate that can contact the workpiece (60) or be connected by fasteners.

9. The automatic oil pipe airtightness testing mechanism according to claim 6, characterized in that, The limiting component (30) is mounted on the movable base (20), and a base plate (10) is provided below the movable base (20). The base plate (10) has a track (11), and the bottom of the movable base (20) has a sliding member that is assembled with the track (11).

10. The automatic oil pipe airtightness testing mechanism according to claim 9, characterized in that, The substrate (10) has a limiter (13) on its side that corresponds to the position of the track (11).

Images