A device for detecting defective and faulty copper pipes in air conditioners

Abstract

This application relates to the field of copper pipe processing, specifically disclosing a device for detecting defective and faulty air conditioning copper pipes. The device includes a worktable with a feeding mechanism for inputting and feeding copper pipes, a straightening mechanism for straightening the copper pipes, and a conveying mechanism for driving the copper pipes. The straightening mechanism is located between the feeding mechanism and the conveying mechanism. A detection mechanism for detecting the black pipe area of ​​the copper pipe is also located between the straightening mechanism and the conveying mechanism. The detection mechanism includes a fixed frame and a photoelectric sensor, with the photoelectric sensor mounted on the fixed frame and facing the direction of copper pipe movement. This application improves the accuracy and stability of defective pipe segment identification, increases the detection rate of defective pipe segments, and achieves zero leakage and zero defects.

Description

Technical Field

[0001] This application relates to the technical field of copper tube processing, and in particular to a device for detecting defective and faulty copper tubes in air conditioning systems. Background Technology

[0002] Copper pipes are commonly used in the air conditioning industry to produce refrigeration piping. During the production process, copper pipes are usually supplied in rolls, with a single roll weighing hundreds of kilograms and being quite long. Because copper pipe material itself may have defects, such as holes or dents, eddy current testing and other inspection methods are typically used in production to identify defective sections of copper pipe (referred to in the industry as "black pipes"). These defective sections are then marked, for example, by using inkjet marking to mark the locations on the copper pipe, making the surface of the black pipe area appear black.

[0003] In related technologies, the subsequent processing of copper pipes requires cutting the coiled pipes into standard pieces of fixed lengths before inserting them into insulation pipes to assemble products such as connecting pipes for indoor and outdoor units. In traditional processing, manual identification of the black pipe areas marked with flaw detection is crucial. If this is not detected in time, defective pipe sections may be automatically inserted into the insulation pipe, leading to a risk of refrigerant leakage and consequently affecting product quality. Summary of the Invention

[0004] To improve the accuracy and stability of defective pipe segment identification, this application provides a device for detecting faulty and defective air conditioning copper pipes, which improves the accuracy and stability of defective pipe segment identification and reduces refrigerant leakage.

[0005] The technical solution of the air conditioning copper pipe defect detection device provided in this application is as follows: A device for detecting defective and faulty copper pipes in air conditioners includes a workbench. The workbench is equipped with a feeding mechanism for inputting and feeding copper pipes, a straightening mechanism for straightening the copper pipes, and a conveying mechanism for driving the copper pipes to move. The straightening mechanism is located between the feeding mechanism and the conveying mechanism. The workbench also includes a detection mechanism for detecting the black pipe area of ​​the copper pipe, located between the straightening mechanism and the conveying mechanism. The detection mechanism includes a fixed frame and a photoelectric sensor, with the photoelectric sensor positioned on the fixed frame and facing the direction of movement of the copper pipe.

[0006] By adopting the above technical solution, the copper tube first passes through the feeding mechanism, straightening mechanism, detection mechanism, and conveying mechanism in sequence. Then, the conveying mechanism is activated, and the copper tube moves continuously under the drive of the conveying mechanism. The straightening mechanism adjusts the curved parts of the copper tube to improve its straightness, making it easier for the photoelectric sensor to detect. When the photoelectric sensor identifies the black tube area on the copper tube, the defective tube section is cut off manually. Then, the conveying mechanism is activated again to drive the copper tube to move. Throughout the process, the photoelectric sensor automatically identifies the defective tube section of the copper tube, which effectively improves the accuracy and stability of defective tube section identification, thereby helping to reduce the occurrence of refrigerant leakage.

[0007] Optionally, multiple photoelectric sensors are configured, and a limiting cylinder is provided on the worktable. The limiting cylinder is located between the multiple photoelectric sensors, and the copper tube passes through the limiting cylinder and is slidably connected to the limiting cylinder.

[0008] By adopting the above technical solution, multiple photoelectric sensors can detect the copper tube from different angles, improving the recognition accuracy and comprehensiveness of the black tube area. The limiting cylinder can constrain the movement trajectory of the copper tube, reducing deviation or shaking during movement, ensuring that the copper tube is within the detection range of multiple photoelectric sensors, effectively improving the accuracy of photoelectric sensors in detecting defective pipe sections.

[0009] Optionally, the feeding mechanism includes a support rod and a first pulley. The support rod is fixed to the worktable, passes through the first pulley, and is rotatably connected to the first pulley. The outer circumferential surface of the first pulley is slidably connected to the copper tube.

[0010] By adopting the above technical solution, when the copper tube slides in contact with the outer circumferential surface of the first pulley, the first pulley can rotate synchronously with the movement of the copper tube, converting the sliding friction of the copper tube into rolling friction, reducing the friction between the two, reducing the wear on the surface of the copper tube caused by friction, and protecting the appearance quality of the copper tube.

[0011] Optionally, the straightening mechanism includes a vertical straightening component, which includes a first base and a first straightening wheel. The first base is vertically arranged with respect to the worktable, and the first straightening wheel is rotatably connected to the first base. Multiple first straightening wheels are provided, and the multiple first straightening wheels are located between the photoelectric sensor and the upright plate. Adjacent first straightening wheels are located on both sides of the copper tube.

[0012] By adopting the above technical solution, multiple first straightening wheels can apply force to the copper tube from the top and bottom (vertical direction). When the copper tube passes through the gap between adjacent first straightening wheels, the first straightening wheels on both sides will straighten the vertically bent part of the copper tube, improving the straightness of the copper tube in the vertical direction, which facilitates the detection of the copper tube by the photoelectric sensor.

[0013] Optionally, the straightening mechanism further includes a horizontal straightening component, which includes a second base and a second straightening wheel. The second base is arranged parallel to the worktable, and the second straightening wheel is rotatably connected to the second base. Multiple second straightening wheels are provided, and the second straightening wheel is located between the photoelectric sensor and the first straightening wheel. Adjacent second straightening wheels are located on both sides of the copper tube.

[0014] By adopting the above technical solution, when the copper tube passes through the gap between adjacent second straightening rollers, the second straightening rollers on both sides will specifically correct any horizontal bends in the copper tube. Through rolling friction, the copper tube is propelled forward while the horizontally bent parts are gradually straightened. In conjunction with the vertical straightening component, this achieves all-around straightening of the copper tube in both vertical and horizontal directions, improving the overall straightness of the copper tube and ensuring that it maintains a stable straight state during subsequent testing.

[0015] Optionally, multiple first straightening wheels are arranged in an alternating manner, and multiple second straightening wheels are arranged in an alternating manner.

[0016] By adopting the above technical solution, the staggered arrangement of the first straightening wheel or the second straightening wheel can reduce the excessively concentrated pressure applied to the same cross section of the copper tube, so that the force application points of the first straightening wheel or the second straightening wheel are distributed along the length of the copper tube, protecting the surface of the copper tube from extrusion damage, and further improving the stability of the straightening accuracy of the copper tube.

[0017] Optionally, the conveying mechanism includes a driving component and multiple rotating plates. The driving component drives the rotating plates to rotate. The rotating plates are rotatably connected to the worktable. The rotating plates are located on the side of the photoelectric sensor away from the second straightening wheel. The multiple rotating plates are located on both sides of the copper tube and abut against the copper tube.

[0018] By adopting the above technical solution, the rotating plate comes into contact with the surface of the copper tube. When the driving component drives the rotating plate to rotate, the rotating plates on both sides drive the copper tube to move forward through friction, which makes it easier to control the movement and pause of the copper tube and effectively improves the stability of copper tube transmission.

[0019] Optionally, the outer circumferential surface of the rotating plate is provided with a groove adapted to the diameter of the copper tube, and the copper tube passes through the groove and is slidably connected to the rotating plate.

[0020] By adopting the above technical solution, when the copper tube passes through the groove, the inner wall of the groove can constrain the copper tube, effectively reducing displacement and slippage of the copper tube, and further improving the guiding accuracy of the copper tube transmission.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The copper tube passes through the feeding mechanism, straightening mechanism, detection mechanism, and conveying mechanism in sequence. Then, the conveying mechanism is activated, and the copper tube moves continuously under its drive. The straightening mechanism adjusts the curved parts of the copper tube to improve its straightness, making it easier for the photoelectric sensor to detect. When the photoelectric sensor identifies the black tube area on the copper tube, the defective tube section is manually cut off. Then, the conveying mechanism is activated again to drive the copper tube to move. Throughout the process, the photoelectric sensor automatically identifies the defective tube section of the copper tube, which effectively improves the accuracy and stability of defective tube section identification, thereby helping to reduce the occurrence of refrigerant leakage. 2. Multiple photoelectric sensors can detect copper pipes from different angles, improving the recognition accuracy and comprehensiveness of the black pipe area. The limiting cylinder can constrain the movement trajectory of the copper pipe, reducing the deviation or shaking of the copper pipe during movement, so that the copper pipe is within the detection range of multiple photoelectric sensors, effectively improving the accuracy of photoelectric sensors in detecting defective pipe sections. 3. The rotating plate comes into contact with the surface of the copper tube. When the driving component drives the rotating plate to rotate, the rotating plates on both sides move the copper tube forward through friction, which makes it easier to control the movement and pause of the copper tube and effectively improves the stability of copper tube transmission. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the air conditioning copper pipe defect and defect detection device of this application, showing the detection mechanism, the conveying mechanism and the limiting cylinder; Figure 2 This is a schematic diagram of the feeding mechanism and straightening mechanism of the air conditioning copper pipe defect detection device of this application.

[0023] Reference numerals: 1. Workbench; 2. Feeding mechanism; 21. Support rod; 22. First pulley; 3. Straightening mechanism; 31. Vertical straightening assembly; 311. First base; 312. First straightening wheel; 32. Horizontal straightening assembly; 321. Second base; 322. Second straightening wheel; 4. Conveying mechanism; 41. Driving component; 42. Rotating plate; 5. Detection mechanism; 51. Fixing frame; 52. Photoelectric sensor; 6. Limiting cylinder; 7. Groove; 8. Support column; 9. Connecting plate; 10. Vertical plate; 11. Through hole; 12. Straightening rod; 13. Driving box. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0025] This application discloses a device for detecting faulty and defective copper pipes in air conditioners, referring to... Figure 1The system includes a workbench 1, on which a copper tube feeding mechanism 2, a straightening mechanism 3, a detection mechanism 5, and a conveying mechanism 4 are sequentially arranged. The feeding mechanism 2 is responsible for feeding the copper tubes, the straightening mechanism 3 straightens the copper tubes, the detection mechanism 5 detects the black tube area of ​​the copper tube, and the conveying mechanism 4 drives the copper tube to move on the workbench 1. The detection mechanism 5 includes a photoelectric sensor 52 and a mounting bracket 51. The mounting bracket 51 is vertically fixed to the top of the workbench 1 by bolts, and the photoelectric sensor 52 is fixed to the top of the mounting bracket 51, facing the direction of copper tube movement. In this embodiment, two photoelectric sensors 52 are used. The two photoelectric sensors 52 are arranged opposite each other, facilitating detection of the copper tube from different angles or positions. When the photoelectric sensor 52 detects a black tube, the conveying mechanism 4 stops working, causing the copper tube to stop moving. The defective section is then manually removed before the system restarts. By continuously detecting defective sections of the copper tube through the photoelectric sensor 52, manual intervention is reduced, effectively improving the accuracy and stability of defective section identification and helping to reduce refrigerant leakage.

[0026] The black tube area is marked black, which differs from the color and reflective properties of normal tube sections (such as copper surfaces). The photoelectric sensor 52 identifies the black tube area by detecting changes in the reflection parameters.

[0027] Reference Figure 1 The workbench 1 is fixed with a support column 8 by bolts. The support column 8 is perpendicular to the workbench 1. A limiting cylinder 6 is vertically inserted through the support column 8. The limiting cylinder 6 is located between two photoelectric sensors 52. A copper tube passes through the limiting cylinder 6 and is slidably connected to it. The limiting cylinder 6 provides limiting and support for the copper tube, reducing the deviation caused by the copper tube sagging due to its own weight. This ensures that the copper tube corresponds to the sensing position of the photoelectric sensor 52 when it passes through it, improving the accuracy of the detection by the photoelectric sensor 52.

[0028] Reference Figure 2 The feeding mechanism 2 includes two support rods 21 and two first pulleys 22. The support rods 21 are parallel to the width direction of the worktable 1, and each support rod 21 passes through the first pulley 22 and is rotatably connected to it. Two connecting plates 9 are vertically fixed to the worktable 1 by bolts. The two ends of the support rods 21 are fixed to the two connecting plates 9 respectively. The two support rods 21 are parallel to each other on the connecting plates 9, and the two first pulleys 22 are located on the same vertical line on the support rods 21. When the copper tube slides with the first pulleys 22, the rolling friction between them reduces the resistance of the copper tube conveying and reduces scratches and deformation of the copper tube. The gap formed between the two first pulleys 22 can accommodate the copper tube through, which can limit and guide the copper tube, reduce the copper tube from falling off, and facilitate the copper tube to enter the next working process.

[0029] Reference Figure 1 and Figure 2 A vertical plate 10 is bolted to the workbench 1. The vertical plate 10 is perpendicular to the workbench 1 and is located between the first pulley 22 and the straightening mechanism 3. The vertical plate 10 has a through hole 11 for the copper tube to pass through. During the process of the copper tube entering the straightening mechanism 3 through the first pulley 22, the vertical plate 10 supports the copper tube, reducing the deviation and shaking of the copper tube due to its own weight, and improving the stability of the copper tube during transportation. The through hole 11 has a restraining effect on the copper tube, reducing accidental collisions between the copper tube and other components, and protecting the integrity of the copper tube.

[0030] Reference Figure 1 and Figure 2 The straightening mechanism 3 includes a vertical straightening component 31, which comprises a first base 311 and multiple first straightening wheels 312. The first base 311 is vertically fixed on the workbench 1, and the multiple first straightening wheels 312 are rotatably connected to the side wall of the first base 311. The rotation axis of the first straightening wheels 312 is perpendicular to the first base 311. The multiple first straightening wheels 312 are staggered on the first base 311 to form two rows, with adjacent first straightening wheels 312 located on both sides of the copper tube. When the copper tube passes between multiple pairs of adjacent first straightening wheels 312, the multiple first straightening wheels 312 compress the upper and lower surfaces of the copper tube, which can reduce the bending deformation of the copper tube, improve the straightness of the copper tube in the vertical direction, and facilitate subsequent inspection.

[0031] Reference Figure 1 and Figure 2 The straightening mechanism 3 also includes a horizontal straightening component 32, which includes a second base 321 and multiple straightening wheels 322. The second base 321 is horizontally fixed to the worktable 1, and multiple straightening rods 12 are vertically fixed to the second base 321 by bolts. The second straightening wheels 322 are rotatably connected to the straightening rods 12. The second straightening wheels 322 are located between the photoelectric sensor 52 and the first straightening wheel 312. The multiple second straightening wheels 322 are staggered on the second base 321 to form two rows, with adjacent second straightening wheels 322 located on both sides of the copper tube. When the copper tube passes the second straightening wheels 322, the second straightening wheels 322 on both sides will squeeze the horizontal sides of the copper tube, so that the copper tube remains straight in the horizontal dimension. The second straightening wheels 322 and the first straightening wheels 312 cooperate to straighten the copper tube in all directions, improve the overall straightness of the copper tube, and reduce the impact of bending on the detection accuracy of the photoelectric sensor 52.

[0032] Reference Figure 1 and Figure 2The conveying mechanism 4 includes a drive component 41 and a rotating plate 42. In this embodiment, the drive component 41 is a motor. A drive box 13 is fixed to the worktable 1 by bolts, and the drive box 13 is perpendicular to the worktable 1. In this embodiment, there are two rotating plates 42, which are located on the same vertical line on the drive box 13. The rotating plates 42 are rotatably connected to the side of the drive box 13 closest to the copper tube. The outer circumferential surface of each of the two rotating plates 42 is provided with a groove 7 that matches the radius of the copper tube. The groove 7 between the two rotating plates 42 forms an area to accommodate the diameter of the copper tube, reducing the deviation and slippage of the copper tube during the conveying process. The motor is located inside the drive box 13, and the output shaft of the motor is connected to the rotating plate 42. When the motor is started, the motor drives the output shaft to rotate, thereby driving the rotating plate 42 to rotate synchronously. When the motor drives the rotating plate 42 to rotate, the inner wall of the groove 7 moves the copper tube through friction, reducing indentations on the surface of the copper tube and making it easier to control the conveying speed of the copper tube, which is beneficial to the detection of the photoelectric sensor 52. When the photoelectric sensor 52 detects the black tube area, the rotating plate 42 is stopped by the motor, and then the defective tube section is cut off by the staff, which improves the stability of defective tube section identification.

[0033] The implementation principle of the air conditioning copper pipe defect detection device disclosed in this application is as follows: First, the copper pipe is manually fed through two first pulleys 22, and then sequentially passed through the gaps between multiple sets of adjacent first straightening rollers 312 and the gaps between multiple sets of adjacent second straightening rollers 322 to straighten the copper pipe in all directions. Then, it passes through the grooves 7 of the limiting cylinder 6 and the rotating plate 42, so that multiple photoelectric sensors 52 are facing the copper pipe. The motor is started, and the motor drives the rotating plate 42 to rotate. The grooves 7 drive the copper pipe to move through friction. When the photoelectric sensor 52 detects the black pipe area, the motor stops working, so that the rotating plate 42 stops rotating, that is, the copper pipe stops moving. Then, the black pipe area is manually cut off, and the motor is started again to drive the rotating plate 42 to rotate. This cycle is repeated multiple times to realize the continuous detection and control of defective pipe sections, effectively improving the accuracy and stability of defective pipe section identification, and helping to reduce the occurrence of refrigerant leakage.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for detecting defective and faulty copper pipes in air conditioning systems, characterized in that: The system includes a workbench (1), on which a feeding mechanism (2) for feeding copper tubes is provided, a straightening mechanism (3) for straightening copper tubes is provided, and a conveying mechanism (4) for driving copper tubes to move is provided on the workbench (1). The straightening mechanism (3) is located between the feeding mechanism (2) and the conveying mechanism (4). The workbench (1) also includes a detection mechanism (5) for detecting the black tube area of ​​the copper tubes. The detection mechanism (5) is located between the straightening mechanism (3) and the conveying mechanism (4). The detection mechanism (5) includes a fixed frame (51) and a photoelectric sensor (52). The photoelectric sensor (52) is located on the fixed frame (51) and faces the direction of movement of the copper tubes.

2. The copper tube defect detection device according to claim 1, wherein The photoelectric sensor (52) is configured as a plurality of them. A limiting cylinder (6) is provided on the worktable (1). The limiting cylinder (6) is located between the plurality of photoelectric sensors (52). The copper tube passes through the limiting cylinder (6) and is slidably connected to the limiting cylinder (6).

3. The copper tube defect detection device according to claim 1, wherein The feeding mechanism (2) includes a support rod (21) and a first pulley (22). The support rod (21) is fixed on the workbench (1). The support rod (21) passes through the first pulley (22) and is rotatably connected to the first pulley (22). The outer circumferential surface of the first pulley (22) is slidably connected to the copper tube.

4. The air conditioner copper pipe defect detection device according to claim 3, characterized in that, The straightening mechanism (3) includes a vertical straightening component (31), which includes a first base (311) and a first straightening wheel (312). The first base (311) is vertically arranged with the workbench (1). The first straightening wheel (312) is rotatably connected to the first base (311). There are multiple first straightening wheels (312). The multiple first straightening wheels (312) are located between the photoelectric sensor (52) and the first pulley (22). Adjacent first straightening wheels (312) are located on both sides of the copper tube.

5. The copper tube defect detection device according to claim 4, wherein The straightening mechanism (3) further includes a horizontal straightening component (32), which includes a second base (321) and a second straightening wheel (322). The second base (321) is arranged parallel to the workbench (1), and the second straightening wheel (322) is rotatably connected to the second base (321). Multiple second straightening wheels (322) are provided. The second straightening wheel (322) is located between the photoelectric sensor (52) and the first straightening wheel (312), and adjacent second straightening wheels (322) are located on both sides of the copper tube.

6. The air conditioning copper pipe defect detection device according to claim 5, characterized in that, Multiple first straight wheels (312) are staggered, and multiple second straight wheels (322) are staggered.

7. The copper tube defect detection device according to claim 5, wherein The conveying mechanism (4) includes a driving member (41) and multiple rotating plates (42). The driving member (41) drives the rotating plates (42) to rotate. The rotating plates (42) are rotatably connected to the worktable (1). The rotating plates (42) are located on the side of the photoelectric sensor (52) away from the second straightening wheel (322). The multiple rotating plates (42) are located on the symmetrical sides of the copper tube. The multiple rotating plates (42) abut against the surface of the copper tube.

8. The air conditioner copper pipe defect detection device according to claim 7, wherein The outer circumferential surface of the rotating plate (42) is provided with a groove (7) adapted to the diameter of the copper tube, and the copper tube passes through the groove (7) and is slidably connected to the rotating plate (42).

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