A bend pipe air tightness detection device with automatic feeding and discharging

Abstract

The application discloses a kind of automatic feeding and discharging's elbow pipe air tightness detection device, belong to detection equipment technical field, including rack, further include: continuous feeding mechanism and air tightness detection mechanism, the continuous feeding mechanism for continuously conveying elbow pipe and correcting elbow pipe posture is installed in the left and right sides of the rack, two air tightness detection mechanisms for detecting the air tightness of elbow pipe are installed on the rack, the continuous feeding mechanism includes: feeding assembly and posture calibration assembly, the feeding assembly is installed in rack side, and the posture calibration assembly is installed in feeding assembly output end. By the above mode, the low-cost automatic identification and alternate separation of two postures elbow pipe can be carried out, without manual sorting, further improve the feeding efficiency, realize elbow pipe feeding, posture correction, air tightness detection and the whole process automation of discharging, effectively improve the degree of automation and detection efficiency of elbow pipe air tightness detection, reduce the intensity of labor.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to an automatic loading and unloading device for testing the air tightness of bent pipes. Background Technology

[0002] As a connector used in piping systems to change the direction of media transport, bends are widely used in automobiles, hydraulic and pneumatic systems, refrigeration and HVAC systems, chemical industries, and various mechanical equipment. Their welding quality and sealing performance directly affect the operational safety of the entire piping system. Airtightness testing is a crucial inspection process before bends leave the factory, used to promptly detect leaks caused by cracks, pinholes, and other defects on the bend's surface and at the weld seams, preventing media leakage and potential safety accidents.

[0003] Chinese patent CN223783844U discloses a mechanism for testing the airtightness of a bent pipe, comprising a worktable. The worktable is characterized by: an upper positioning seat, a lower positioning seat, and a positioning block; the upper end of the bent pipe extends into the upper positioning seat, which contains an upper sealing block that can movably fit against the upper end of the bent pipe; the lower end connector of the bent pipe extends into the lower positioning seat, which contains a lower sealing block that can movably fit against the lower end of the bent pipe; the positioning block is movably positioned on the back side of the bent pipe, and has a positioning groove that matches the bent pipe, with the lower end of the positioning block engaging with the upper end of the connector; an air pipe connector for an airtightness tester is inserted through the upper or lower sealing block; the upper positioning seat is adjustable vertically on a mounting plate, and the mounting plate is adjustable horizontally; the mounting plate has a vertical groove, and the corresponding upper positioning seat has a mounting hole; the two are connected by fasteners, and their vertical positions are adjustable.

[0004] However, the technical solution of this patent has the following problems: 1. When loading materials, the patent requires adjusting the posture of each material individually by a robotic arm or manually before clamping and sealing. This involves many manual steps, is labor-intensive, and manual posture adjustment is prone to clamping deviations, affecting the reliability of the test. When using a robotic arm, the posture adjustment cost is too high, and the enterprise faces significant equipment investment and maintenance pressure. 2. This patent uses a robotic arm to feed materials one by one and operates intermittently on a single piece. It cannot achieve continuous feeding and uninterrupted conveying of bent pipes. During the inspection process, the equipment is in an intermittent waiting state, which is difficult to meet the needs of continuous and automated inspection of bent pipes in large batches, resulting in low inspection efficiency.

[0005] Based on this, the present invention designs an automatic loading and unloading device for detecting the air tightness of bent pipes to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an automatic loading and unloading device for detecting the air tightness of bent pipes.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An automatic loading and unloading device for testing the air tightness of bent pipes includes a frame, and further includes a continuous loading mechanism and an air tightness testing mechanism. The frame is equipped with continuous loading mechanisms on both the left and right sides for continuously conveying bent pipes and correcting their posture. The frame is also equipped with two air tightness testing mechanisms for testing the air tightness of bent pipes. The continuous feeding mechanism includes a feeding component and an attitude calibration component. The feeding component is located on one side of the frame, and the attitude calibration component is installed at the output end of the feeding component. The attitude calibration component includes an alternating movement component and a continuous feeding component. The alternating movement component is installed on one side of the frame and is used to identify and alternately move the curved pipe conveyed by the feeding component. The continuous feeding component is installed on the feeding component and is used to continuously convey the curved pipe that moves after being identified by the alternating movement component. The airtightness testing mechanism includes a linkage pressing and unloading assembly and a sealing detection assembly. The linkage pressing and unloading assembly is mounted on the frame and is used to press down and fix the workpiece, while moving and unloading the previous workpiece that has been tested. The sealing detection assembly is mounted on the frame and is used to test the airtightness of the bend.

[0008] Furthermore, the feeding assembly includes a stepped pusher feeder, which is located on one side of the frame and is used to continuously convey bent pipes in two postures to the output end of the stepped pusher feeder.

[0009] Furthermore, the alternating movement assembly includes: a support bracket, a baffle, a first linear module, a first cylinder, a C-shaped frame, and an L-shaped support plate. The support bracket is fixedly installed at the output end of the stepped pusher feeder. The baffle is fixedly installed on the front side wall of the support bracket to block the curved pipe conveyed at the output end of the stepped pusher feeder. The first linear module is fixedly installed on the support bracket. The first cylinder is fixedly installed at the output end of the first linear module. The C-shaped frame is fixedly installed at the output end of the first cylinder. An L-shaped support plate is distributed on each of the left and right sides of the C-shaped frame. The two L-shaped support plates are symmetrically fixedly installed on the left and right sides of the output end of the stepped pusher feeder to assist in supporting the feeding.

[0010] Furthermore, the alternating movement component also includes an identification component mounted on the C-shaped frame.

[0011] Furthermore, the identification component includes: a first proximity sensor, two of which are fixedly mounted on the left and right sides of the C-shaped frame for detecting the posture of the bent pipe.

[0012] Furthermore, the uninterrupted feeding assembly includes: a U-shaped flexible chain conveyor, an XZ-axis robotic arm, a rotary cylinder, a horizontal plate, and suction nozzles. The housing of the U-shaped flexible chain conveyor is installed at the output end of the stepped pusher feeder. The XZ-axis robotic arm is fixedly installed between the housing of the stepped pusher feeder and the frame. The rotary cylinder is fixedly installed at the output end of the XZ-axis robotic arm. The horizontal plate is fixedly installed at the output end of the rotary cylinder. A contoured slot is formed in the horizontal plate. Multiple suction nozzles are fixedly installed in the contoured slot. A second proximity sensor is fixedly installed on the side of the U-shaped flexible chain conveyor near the frame. The second proximity sensor is located behind the C-shaped frame. A vertical plate is fixedly installed at the output end of the U-shaped flexible chain conveyor.

[0013] Furthermore, the end of the L-shaped support plate away from the C-shaped frame is fixedly connected to the inner wall shell of the U-shaped flexible chain conveyor, and the L-shaped support plate is close to the conveyor chain of the U-shaped flexible chain conveyor.

[0014] Furthermore, the linkage pressing and dispensing assembly includes: a second linear module, a second cylinder, a pressure block, a third cylinder, and a pneumatic gripper. The housing of the second linear module is fixedly mounted on the frame via a bracket. The second cylinder is fixedly mounted on the right side of the output end of the second linear module. The pressure block is fixedly mounted on the output end of the second cylinder. The third cylinder is fixedly mounted on the left side of the output end of the second linear module. The pneumatic gripper is fixedly mounted on the output end of the third cylinder.

[0015] Furthermore, a feeding frame is fixedly installed on the frame, and the feeding frame is located directly below the pneumatic gripper.

[0016] Furthermore, the sealing detection assembly includes: a limiting block, a fourth cylinder, a plug, a fifth cylinder, and an airtightness test connector. The limiting block is fixedly installed on the frame, the fourth cylinder is fixedly installed on the frame and located to the left of the limiting block, the plug is fixedly installed at the output end of the fourth cylinder, the fifth cylinder is fixedly installed at the rear of the frame and located behind the limiting block, and the outer shell of the airtightness test connector is fixedly installed at the output end of the fifth cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention continuously conveys the 90-degree bent pipe to its output end through a stepped pusher feeder. The bent pipe is in two postures at the output end of the stepped pusher feeder: the two ends of the bent pipe face to the left or the two ends of the bent pipe face to the right. Two proximity sensors fixedly installed on the left and right sides of the C-shaped frame detect the posture of the bent pipe and transmit the electrical signal to the external controller. The external controller controls the output end of the first cylinder to move downward, driving the C-shaped frame to move downward to the position of the bent pipe. Then, the output end of the first linear module moves to drive the C-shaped frame to push the bent pipes with different orientations separately, realizing low-cost automatic identification and alternating separation of bent pipes with two postures, eliminating the need for manual sorting and further improving the feeding efficiency. 2. After passing the L-shaped support plate, the bent pipe moves to the output end of the U-shaped flexible chain conveyor of the uninterrupted feeding assembly. The bent pipe with both ends facing right moves to the left conveyor chain of the U-shaped flexible chain conveyor, and the bent pipe with both ends facing left moves to the right conveyor chain of the U-shaped flexible chain conveyor. When the bent pipe with both ends facing right moves from the left side to the right side of the U-shaped flexible chain conveyor, the bent pipe with both ends facing right becomes bent pipe with both ends facing left, completing the posture switch of the bent pipe. This ensures that the output end of the U-shaped flexible chain conveyor outputs bent pipes with both ends facing left, providing bent pipes with uniform posture for subsequent sealing and testing, ensuring the consistency and convenience of testing. 3. By linking the pressing and unloading components, the output end of the second cylinder moves downward, driving the pressure block to move downward to the position of the limit block to fix the bent pipe. At the same time, the pneumatic gripper, driven by the third cylinder and the second linear module, clamps, moves and releases the previously inspected bent pipe, so that the bent pipe falls into the unloading frame directly below the pneumatic gripper to complete the unloading. This realizes the linkage between fixing the bent pipe and unloading the inspected bent pipe, further improving the inspection efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a partial structural diagram of the continuous feeding mechanism of the present invention. Figure 1 ; Figure 5 This is a partial structural diagram of the continuous feeding mechanism of the present invention. Figure 2; Figure 6 This is a top view of a portion of the continuous feeding mechanism of the present invention; Figure 7 For along Figure 6 Sectional view along the AA direction; Figure 8 For along Figure 6 Sectional view along the BB direction; Figure 9 This is a partial structural diagram of the continuous feeding mechanism of the present invention. Figure 3 ; Figure 10 This is a partial structural schematic diagram of the uninterrupted feeding component of the present invention; Figure 11 This is a partial structural schematic diagram of the airtightness testing mechanism of the present invention.

[0020] The labels in the diagram represent: 1. Frame; 2. Continuous feeding mechanism; 21. Stepped pusher feeder; 22. Support bracket; 23. Baffle; 24. First linear module; 25. First cylinder; 26. C-shaped frame; 27. L-shaped support plate; 28. First proximity sensor; 29. ​​U-shaped flexible chain conveyor; 210. XZ axis robotic arm; 211. Rotary cylinder; 212. Horizontal plate; 213. Nozzle; 214. Second proximity sensor; 215. Contouring slot; 216. Vertical plate; 3. Air tightness testing mechanism; 31. Second linear module; 32. Second cylinder; 33. Pressure block; 34. Third cylinder; 35. Pneumatic gripper; 36. Unloading frame; 37. Limiting block; 38. Fourth cylinder; 39. Plug; 310. Fifth cylinder; 311. Air tightness test connector. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0024] Example 1: In some examples, please refer to Figures 1-11An automatic loading and unloading device for testing the air tightness of bent pipes includes a frame 1, and further includes a continuous loading mechanism 2 and an air tightness testing mechanism 3. The frame 1 is equipped with continuous loading mechanisms 2 on both the left and right sides for continuously conveying bent pipes and correcting the posture of the bent pipes. The frame 1 is equipped with two air tightness testing mechanisms 3 for testing the air tightness of bent pipes.

[0025] The continuous feeding mechanism 2 includes a feeding component and an attitude calibration component. The feeding component is located on one side of the frame 1, and the attitude calibration component is installed at the output end of the feeding component. The attitude calibration component includes an alternating movement component and a continuous feeding component. The alternating movement component is installed on one side of the frame 1 and is used to identify and alternately move the curved pipe conveyed by the feeding component. The continuous feeding component is installed on the feeding component and is used to continuously convey the curved pipe that is identified and moved by the alternating movement component.

[0026] The airtightness testing mechanism 3 includes: a linkage pressing and feeding assembly and a sealing detection assembly. The linkage pressing and feeding assembly is installed on the frame 1 and is used to press down and fix the workpiece, while moving and feeding the previous workpiece that has been tested. The sealing detection assembly is installed on the frame 1 and is used to test the airtightness of the bend.

[0027] The feeding assembly includes a stepped pusher feeder 21, which is located on one side of the frame 1 and is used to continuously convey bent pipes in two postures to the output end of the stepped pusher feeder 21.

[0028] The 90-degree bend is placed in the hopper of the stepped pusher feeder 21, and the 90-degree bend is conveyed out by the stepped pusher feeder 21. At this time, the 90-degree bend is in two positions at the output end of the stepped pusher feeder 21, with both ends of the bend facing to the left or both ends of the bend facing to the right. The bends with different orientations are pushed separately by the alternating moving components.

[0029] The alternating moving assembly includes: a support bracket 22, a baffle 23, a first linear module 24, a first cylinder 25, a C-shaped frame 26, and an L-shaped support plate 27. The support bracket 22 is fixedly installed at the output end of the stepped pusher feeder 21. The baffle 23 is fixedly installed on the front side wall of the support bracket 22 to block the curved pipe conveyed at the output end of the stepped pusher feeder 21. The first linear module 24 is fixedly installed on the support bracket 22. The first cylinder 25 is fixedly installed at the output end of the first linear module 24. The C-shaped frame 26 is fixedly installed at the output end of the first cylinder 25. An L-shaped support plate 27 is distributed on each of the left and right sides of the C-shaped frame 26. The two L-shaped support plates 27 are symmetrically fixedly installed on the left and right sides of the output end of the stepped pusher feeder 21 to assist in supporting the feeding. The two L-shaped support plates 27 are of different sizes.

[0030] The alternating movement component further includes an identification component mounted on the C-shaped frame 26.

[0031] The identification component includes: a first proximity sensor 28, two of which are fixedly installed on the left and right sides of the C-shaped frame 26 for detecting the posture of the bent pipe.

[0032] The bent tube at the output end of the stepped pusher feeder 21 moves to directly below the C-shaped frame 26. The middle side of the C-shaped frame 26 can just accommodate the bent tube with both ends facing left or right. The first proximity sensor 28 is used to detect the posture of the bent tube. The first proximity sensor 28 on the left side of the C-shaped frame 26 does not detect the bent tube, while the first proximity sensor 28 on the right side of the C-shaped frame 26 detects the bent tube. At this time, the bent tube is in the state of both ends facing left. The two first proximity sensors 28 transmit electrical signals to the external controller. The external controller controls the output end of the first cylinder 25 to move downward, driving the C-shaped frame 26 to move downward. The C-shaped frame 26 moves downward to the bent tube position. The output end of the first linear module 24 moves to the right, driving the C-shaped frame 26 to move to the right. The C-shaped frame 26 moves to the right, driving the bent tube with both ends facing left to move to the right. After passing the L-shaped support plate 27, the bent tube moves to the position of the uninterrupted feeding component.

[0033] If the first proximity sensor 28 on the left side of the C-shaped frame 26 detects the bend, and the first proximity sensor 28 on the right side of the C-shaped frame 26 does not detect the bend, then the bend is in a state where both ends are facing to the right.

[0034] The 90-degree bend is continuously conveyed to its output end by the stepped pusher feeder 21. At the output end of the stepped pusher feeder 21, the bend is in two postures: both ends of the bend are facing left or both ends of the bend are facing right. The posture of the bend is detected by two first proximity sensors 28 fixedly installed on the left and right sides of the C-shaped frame 26, and the electrical signal is transmitted to the external controller. The external controller controls the output end of the first cylinder 25 to move downward, which drives the C-shaped frame 26 to move downward to the position of the bend. Then, the output end of the first linear module 24 moves, which drives the C-shaped frame 26 to push the bends with different orientations separately. Compared with the traditional visual recognition solution, this method is lower in cost and realizes low-cost automatic recognition and alternating separation of bends with two postures, eliminating the need for manual sorting and further improving the feeding efficiency.

[0035] Example 2: In some embodiments, such as Figures 1-11As shown, in a preferred embodiment of the present invention, the uninterrupted feeding assembly includes: a U-shaped flexible chain conveyor 29, an XZ-axis robotic arm 210, a rotary cylinder 211, a horizontal plate 212, and suction nozzles 213. The housing of the U-shaped flexible chain conveyor 29 is installed at the output end of the stepped pusher feeder 21. The XZ-axis robotic arm 210 is fixedly installed between the housing of the stepped pusher feeder 21 and the frame 1. The rotary cylinder 211 is fixedly installed at the output end of the XZ-axis robotic arm 210. The horizontal plate 212 is fixedly installed at the output end of the rotary cylinder 211. A contoured slot 215 is provided in the horizontal plate 212. Multiple suction nozzles 213 are fixedly installed in the contoured slot 215. A second proximity sensor 214 is fixedly installed on the side of the U-shaped flexible chain conveyor 29 near the frame 1. The second proximity sensor 214 is located behind the C-shaped frame 26. A vertical plate 216 is fixedly installed at the output end of the U-shaped flexible chain conveyor 29 for material blocking.

[0036] The XZ-axis robotic arm 210 moves at its output end, driving the rotary cylinder 211, horizontal plate 212, and suction nozzle 213 to move to the bent pipe position at the output end of the U-shaped flexible chain conveyor 29. The XZ-axis robotic arm 210 then moves downwards, causing the rotary cylinder 211, horizontal plate 212, and suction nozzle 213 to move. The contoured slot 215 of the horizontal plate 212 fits tightly against the bent pipe, allowing the bent pipe to enter the contoured slot 215. The suction nozzle 213 is connected to an external negative pressure device. The suction nozzle 213 is activated to adsorb the bent pipe on the contoured slot 215. Then, the XZ-axis robotic arm 210 moves at its output end, transporting the adsorbed bent pipe to the sealing and detection component position.

[0037] The L-shaped support plate 27 is fixedly connected to the inner wall shell of the U-shaped flexible chain conveyor 29 at one end away from the C-shaped frame 26, and the L-shaped support plate 27 is close to the conveyor chain of the U-shaped flexible chain conveyor 29.

[0038] After passing the L-shaped support plate 27, the bent pipe moves to the output end of the U-shaped flexible chain conveyor 29 of the uninterrupted feeding assembly. The bent pipe with both ends facing right moves to the conveyor chain on the left side of the U-shaped flexible chain conveyor 29, and the bent pipe with both ends facing left moves to the conveyor chain on the right side of the U-shaped flexible chain conveyor 29. When the bent pipe with both ends facing right moves from the left side to the right side of the U-shaped flexible chain conveyor 29, the bent pipe with both ends facing right becomes bent pipe with both ends facing left, completing the posture switch of the bent pipe. This enables the U-shaped flexible chain conveyor 29 to output bent pipes with both ends facing left at its output end, providing convenience for subsequent processing.

[0039] To prevent blockage at the output end of the U-shaped flexible chain conveyor 29, a second proximity sensor 214 is used to detect whether there is a bend in the output end of the U-shaped flexible chain conveyor 29 at the location of the second proximity sensor 214. If a bend is found, the alternating movement component stops operating for a period of time. The alternating movement component will only start after the bend at the output end of the U-shaped flexible chain conveyor 29 has passed the second proximity sensor 214 for a preset time. This prevents the bend on the left side of the U-shaped flexible chain conveyor 29 from affecting the feeding of the bend on the right side of the U-shaped flexible chain conveyor 29. If the second proximity sensor 214 does not detect a bend within the preset time, the alternating movement component starts normally, achieving uninterrupted conveying of the bend and effectively preventing blockage, ensuring stable and reliable continuous feeding.

[0040] Example 3: In some embodiments, such as Figures 1-11 As shown, in a preferred embodiment of the present invention, the linkage pressing and dispensing assembly includes: a second linear module 31, a second cylinder 32, a pressing block 33, a third cylinder 34, and a pneumatic gripper 35. The housing of the second linear module 31 is fixedly mounted on the frame 1 by a bracket. The second cylinder 32 is fixedly mounted on the right side of the output end of the second linear module 31. The pressing block 33 is fixedly mounted on the output end of the second cylinder 32. The third cylinder 34 is fixedly mounted on the left side of the output end of the second linear module 31. The pneumatic gripper 35 is fixedly mounted on the output end of the third cylinder 34.

[0041] A feeding frame 36 is fixedly installed on the frame 1, and the feeding frame 36 is located directly below the pneumatic gripper 35.

[0042] The sealing detection assembly includes: a limiting block 37, a fourth cylinder 38, a plug 39, a fifth cylinder 310, and an airtightness test connector 311. The limiting block 37 is fixedly installed on the frame 1. The fourth cylinder 38 is fixedly installed on the frame 1 and is located to the left of the limiting block 37. The plug 39 is fixedly installed at the output end of the fourth cylinder 38. The fifth cylinder 310 is fixedly installed at the rear of the frame 1 and is located behind the limiting block 37. The outer shell of the airtightness test connector 311 is fixedly installed at the output end of the fifth cylinder 310, and the input end of the airtightness test connector 311 is connected to an external airtightness testing device.

[0043] The curved pipe on the right side of the U-shaped flexible chain conveyor 29 is clamped by the uninterrupted feeding component and moved to the position of the limiting block 37 of the sealing and detection component. The output end of the second cylinder 32 of the linkage pressing and unloading component moves downward, driving the pressure block 33 to move downward. The pressure block 33 moves downward to the position of the limiting block 37, fixing the curved pipe on the limiting block 37. The output end of the fourth cylinder 38 moves towards the curved pipe to seal one end of the curved pipe. The output end of the fifth cylinder 310 moves towards the curved pipe, driving the airtightness test connector 311 to seal the other end of the curved pipe. The airtightness of the curved pipe is tested by external airtightness testing equipment in conjunction with the airtightness test connector 311.

[0044] After the inspection is completed, the output end of the second linear module 31 moves to the right, driving the third cylinder 34 and the pneumatic gripper 35 to move to the right. The output end of the third cylinder 34 moves downward, driving the pneumatic gripper 35 to move downward. The pneumatic gripper 35 starts to clamp the inspected bent pipe. The output end of the third cylinder 34 moves upward, driving the pneumatic gripper 35 and the bent pipe to move upward. The output end of the second linear module 31 moves to the left, driving the third cylinder 34, the pneumatic gripper 35 and the bent pipe to move to the left. The pneumatic gripper 35 releases the bent pipe, and the bent pipe falls into the unloading frame 36. The inspected bent pipe is unloaded through the unloading frame 36.

[0045] By linking the pressing and unloading components, the output end of the second cylinder 32 moves downward, driving the pressure block 33 to move downward to the position of the limit block 37 to fix the bent tube. At the same time, the pneumatic gripper 35, driven by the third cylinder 34 and the second linear module 31, clamps, moves and releases the previously inspected bent tube, so that the bent tube falls into the unloading frame 36 directly below the pneumatic gripper 35 to complete the unloading. This realizes the linkage between fixing the bent tube and unloading the inspected bent tube, which further improves the inspection efficiency.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic loading and unloading device for testing the air tightness of bent pipes, comprising a frame (1), characterized in that, Also includes: The continuous feeding mechanism (2) and the air tightness testing mechanism (3) are installed on both the left and right sides of the frame (1) for continuously conveying the bent pipe and correcting the posture of the bent pipe. Two air tightness testing mechanisms (3) for testing the air tightness of the bent pipe are installed on the frame (1). The continuous feeding mechanism (2) includes: a feeding component and an attitude calibration component. The feeding component is located on one side of the frame (1). The attitude calibration component is installed at the output end of the feeding component. The attitude calibration component includes: an alternating movement component and an uninterrupted feeding component. The alternating movement component is installed on one side of the frame (1) and is used to identify and alternately move the bent pipe conveyed by the feeding component. The uninterrupted feeding component is installed on the feeding component and is used to continuously convey the bent pipe that is identified and moved by the alternating movement component. The air tightness testing mechanism (3) includes: a linkage pressing and feeding assembly and a sealing testing assembly. The linkage pressing and feeding assembly is installed on the frame (1) and is used to press down and fix the workpiece, while moving and feeding the previous workpiece that has been tested. The sealing testing assembly is installed on the frame (1) and is used to test the air tightness of the bend.

2. The automatic loading and unloading pipe airtightness testing device according to claim 1, characterized in that, The feeding assembly includes a stepped push plate feeder (21), which is located on one side of the frame (1) and is used to continuously convey bent pipes in two postures to the output end of the stepped push plate feeder (21).

3. The automatic loading and unloading pipe airtightness testing device according to claim 2, characterized in that, The alternating moving assembly includes: a support bracket (22), a baffle (23), a first linear module (24), a first cylinder (25), a C-shaped frame (26), and an L-shaped support plate (27). The support bracket (22) is fixedly installed at the output end of the stepped pusher feeder (21). The baffle (23) is fixedly installed on the front side wall of the support bracket (22) to block the curved pipe conveyed by the output end of the stepped pusher feeder (21). The first linear module (24) is fixedly installed on the support bracket (22). The first cylinder (25) is fixedly installed at the output end of the first linear module (24). The C-shaped frame (26) is fixedly installed at the output end of the first cylinder (25). An L-shaped support plate (27) is distributed on both the left and right sides of the C-shaped frame (26). The two L-shaped support plates (27) are symmetrically fixedly installed on the left and right sides of the output end of the stepped pusher feeder (21) to assist in supporting the feeding.

4. The automatic loading and unloading pipe airtightness testing device according to claim 3, characterized in that, The alternating movement component further includes an identification component mounted on the C-shaped frame (26).

5. The automatic loading and unloading pipe airtightness testing device according to claim 4, characterized in that, The identification component includes: a first proximity sensor (28), two first proximity sensors (28) are fixedly installed on the left and right sides of the C-shaped frame (26) for detecting the posture of the bent pipe.

6. The automatic loading and unloading pipe airtightness testing device according to claim 5, characterized in that, The uninterrupted feeding assembly includes: a U-shaped flexible chain conveyor (29), an XZ-axis robotic arm (210), a rotary cylinder (211), a horizontal plate (212), and a suction nozzle (213). The outer shell of the U-shaped flexible chain conveyor (29) is installed at the output end of the stepped pusher feeder (21). The XZ-axis robotic arm (210) is fixedly installed between the outer shell of the stepped pusher feeder (21) and the frame (1). The rotary cylinder (211) is fixedly installed at the output end of the XZ-axis robotic arm (210). A horizontal plate (212) is fixedly installed at the output end of a rotary cylinder (211). A contoured slot (215) is provided in the horizontal plate (212). Multiple suction nozzles (213) are fixedly installed in the contoured slot (215). A second proximity sensor (214) is fixedly installed on the side of the U-shaped flexible chain conveyor (29) near the frame (1). The second proximity sensor (214) is located behind the C-shaped frame (26). A vertical plate (216) is fixedly installed at the output end of the U-shaped flexible chain conveyor (29).

7. The automatic loading and unloading pipe airtightness testing device according to claim 6, characterized in that, The L-shaped support plate (27) is fixedly connected to the inner wall shell of the U-shaped flexible chain conveyor (29) at one end away from the C-shaped frame (26), and the L-shaped support plate (27) is close to the conveying chain of the U-shaped flexible chain conveyor (29).

8. The automatic loading and unloading pipe airtightness testing device according to claim 7, characterized in that, The linkage pressing and dispensing assembly includes: a second linear module (31), a second cylinder (32), a pressure block (33), a third cylinder (34), and a pneumatic gripper (35). The outer shell of the second linear module (31) is fixedly mounted on the frame (1) by a bracket. The second cylinder (32) is fixedly mounted on the right side of the output end of the second linear module (31). The pressure block (33) is fixedly mounted on the output end of the second cylinder (32). The third cylinder (34) is fixedly mounted on the left side of the output end of the second linear module (31). The pneumatic gripper (35) is fixedly mounted on the output end of the third cylinder (34).

9. The automatic loading and unloading pipe airtightness testing device according to claim 8, characterized in that, A feeding frame (36) is fixedly installed on the frame (1), and the feeding frame (36) is located directly below the pneumatic gripper (35).

10. The automatic loading and unloading pipe airtightness testing device according to claim 9, characterized in that, The sealing detection assembly includes: a limiting block (37), a fourth cylinder (38), a plug (39), a fifth cylinder (310), and an airtightness test connector (311). The limiting block (37) is fixedly installed on the frame (1). The fourth cylinder (38) is fixedly installed on the frame (1) and is located to the left of the limiting block (37). The plug (39) is fixedly installed at the output end of the fourth cylinder (38). The fifth cylinder (310) is fixedly installed at the rear side of the frame (1) and is located at the rear side of the limiting block (37). The outer shell of the airtightness test connector (311) is fixedly installed at the output end of the fifth cylinder (310).

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