U pipe detection device and pipe bending all-in-one machine thereof

Abstract

The invention provides a U pipe detection device and a pipe bending all-in-one machine thereof.The U pipe detection device detects a to-be-detected U pipe used for being clamped on a mold, the to-be-detected U pipe comprises a U pipe body and a welding ring arranged on the U pipe body in a sleeving mode, and the U pipe detection device comprises a supporting base fixed to one side of the mold; the detection assembly comprises a detection rod and a detection sleeve arranged outside the detection rod in a sleeving mode, the detection sleeve and the detection rod are located on the side, close to the to-be-detected U pipe, of the supporting base, an annular insertion groove used for allowing the end of a U pipe body to be inserted therein is formed between the detection sleeve and the detection rod, and the outer end face of the detection sleeve is used for abutting against the welding ring; the detection sleeve and the detection rod are movably arranged relative to the supporting base in the preset direction, so that when the end of the U pipe body is inserted into the annular insertion groove, and the outer end face of the detection sleeve abuts against the welding ring, it is indicated that the U pipe to be detected is a qualified product. The bending and sleeving all-in-one machine solves the problem that in the prior art, the maintenance cost needed by a small U pipe detection mode adopted by a bending and sleeving all-in-one machine is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection, in particular to a U-tube detection device and a U-tube bending machine. BACKGROUND

[0002] The U-tube bending machine refers to a device for producing small U-tubes required for connecting two copper tubes in the refrigeration industry. The small U-tube is sleeved with two welding rings to facilitate the melting of the welding rings in the next welding process, thereby sealing the two U-tube copper tubes and preventing the leakage of the medium in the two U-tube copper tubes.

[0003] The current U-tube bending machine adopts a visual detection method to detect the small U-tube and distinguish between qualified and unqualified small U-tubes. However, visual detection has significant disadvantages in environmental adaptability, cost, and maintenance. First, visual detection is highly dependent on the environment, and factors such as lighting conditions, complex backgrounds, or extreme temperature and humidity can severely affect image quality, leading to detection errors or failures. Second, the cost is relatively high, as the deployment of high-performance hardware (such as high-resolution cameras and GPUs) and complex algorithms requires a large amount of capital investment, and the labeling of high-quality training data also requires additional costs. Finally, the maintenance complexity is high, as the model needs to be updated regularly to adapt to target changes, the hardware devices are prone to aging and need frequent calibration, and the deployment requires coordination of multiple factors such as light sources and installation locations, increasing the implementation difficulty and long-term maintenance cost. SUMMARY

[0004] The main purpose of the present application is to provide a U-tube detection device and a U-tube bending machine to solve the problem of high maintenance cost of the detection method for small U-tubes used by the existing U-tube bending machine.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a U-tube detection device is provided for detecting a U-tube to be detected clamped on a mold, the U-tube to be detected including a U-tube body and a welding ring sleeved on the U-tube body. The U-tube detection device includes a support seat fixed on one side of the mold, a detection assembly including a detection rod and a detection sleeve sleeved outside the detection rod, the detection sleeve and the detection rod being located on the side of the support seat close to the U-tube to be detected, an annular insertion slot for inserting the end of the U-tube body being formed between the detection sleeve and the detection rod, and the outer end face of the detection sleeve being used for abutting against the welding ring. The detection sleeve and the detection rod are movably arranged relative to the support seat in a predetermined direction, so that when the end of the U-tube body is inserted into the annular insertion slot and the outer end face of the detection sleeve abuts against the welding ring, it indicates that the U-tube to be detected is a qualified product.

[0006] Further, the U-tube detection device comprises a sensing assembly arranged on the side of the detection assembly away from the U-tube to be detected, and arranged correspondingly with the detection assembly to detect the moving position of the detection assembly, so as to determine whether the end of the U-tube body is inserted into the annular slot and whether the outer end surface of the detection sleeve abuts on the welding ring, and determine whether the U-tube to be detected is a qualified product.

[0007] Further, the U-tube detection device further comprises a driving component arranged on the support seat and drivingly connected with the detection assembly, and a mounting plate assembly, wherein the detection assembly is arranged on the mounting plate assembly and at least partially located on the side of the mounting plate assembly close to the U-tube to be detected, and the driving component is drivingly connected with the mounting plate assembly to drive the detection assembly to move in a predetermined direction.

[0008] Further, the U-tube detection device further comprises a sensing assembly, and the mounting plate assembly comprises a first mounting plate, wherein an installation cavity is arranged in the first mounting plate, and at least part of the detection assembly is located in the installation cavity; and a second mounting plate arranged correspondingly with the first mounting plate and located on the side of the first mounting plate away from the U-tube to be detected, and the sensing assembly is arranged on the second mounting plate.

[0009] Further, the detection assembly comprises a connecting rod located on the side of the detection sleeve and the detection rod away from the U-tube to be detected, and connected with the detection sleeve and the detection rod, and in the direction away from the U-tube to be detected, the connecting rod comprises a first connecting rod segment and a second connecting rod segment connected in sequence, and the outer diameter of the first connecting rod segment is greater than that of the second connecting rod segment; the first connecting rod segment is located in the first mounting plate, and at least part of the second connecting rod segment is located in the second mounting plate; wherein the sensing assembly is arranged correspondingly with the second connecting rod segment to detect the moving position of the second connecting rod segment, so as to obtain the moving position of the detection assembly.

[0010] Further, the connecting rod further comprises a third connecting rod segment arranged on the end of the first connecting rod segment away from the second connecting rod segment, and the outer diameter of the first connecting rod segment is smaller than that of the third connecting rod segment; an elastic member is arranged in the installation cavity and extends in the extension direction of the first mounting plate, and the elastic member is sleeved on the first connecting rod segment and located in the installation cavity, and the two ends of the elastic member abut on the end of the third connecting rod segment and the cavity wall surface of the installation cavity, respectively.

[0011] Further, the second mounting plate further comprises a mounting through hole, and the second connecting rod segment is movably inserted in the mounting through hole; the sensing assembly comprises a first sensing component arranged above the second mounting plate, and the second connecting rod segment is provided with a first detection position, and a first sensing probe of the first sensing component is arranged towards the mounting through hole to detect the first moving position of the first detection position relative to the mounting through hole, so as to determine whether the outer end surface of the detection sleeve abuts on the welding ring according to the first moving position.

[0012] Further, the sensing assembly further comprises a second sensing component, the second sensing component comprising a sensing body and a second sensing probe connected with each other, the sensing body being provided with a sensing opening, the sensing body being arranged on the second mounting plate and located at a side of the second mounting plate away from the first mounting plate, the second connecting rod segment being provided with a second detection position, the second detection position being located at a side of the first detection position away from the first connecting rod segment; the sensing opening is in communication with the mounting through hole, and the second sensing probe is arranged towards the sensing opening to detect a second movement position of the second detection position relative to the sensing opening, so as to determine whether the end of the U-tube body is inserted into the annular insertion slot according to the second movement position.

[0013] Further, the mounting plate assembly comprises a third mounting plate, the third mounting plate being connected with the output end of the driving component, and the first mounting plate and the second mounting plate are both arranged on the third mounting plate, so that the first mounting plate and the second mounting plate are driven to move under the driving of the driving component.

[0014] According to another aspect of the present application, a pipe bending all-in-one machine is provided, comprising a mold and a U-tube detection device, the mold being used to clamp a U-tube, and the U-tube detection device being used to detect the assembly state of the U-tube and a welding ring sleeved on the U-tube, the U-tube detection device being the U-tube detection device described above.

[0015] By applying the technical scheme of the present application, the U-tube detection device of the present application can directly detect whether the welding ring is correctly sleeved on the U-tube body and whether the pipe opening of the U-tube body is damaged through the physical contact mode of the sleeve, the detection rod, the U-tube body and the welding ring on the U-tube body. Compared with the traditional visual detection method, the detection result of the U-tube detection device of the present application is not affected by factors such as environmental light, temperature and humidity or complex background, which significantly improves the stability and reliability of the detection, and the design of the detection assembly makes the detection operation more direct and fast. When the end of the U-tube body is inserted into the annular insertion slot and the outer end surface of the detection sleeve abuts against the welding ring, it can be judged that the U-tube is a qualified product, without the need for complex image acquisition, processing and analysis steps, greatly simplifying the detection process and improving the production efficiency. The U-tube detection device of the present application adopts the combination of mechanical structure and sensor, which significantly reduces the hardware cost compared with the high-performance visual detection system, and the detection principle is simple, without the need for complex training data and algorithm model, effectively solving the problem of high maintenance cost of the detection method for small U-tubes adopted by the pipe bending all-in-one machine in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings constituting a part of the specification of the present application are used to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 Fig. 1 shows a schematic diagram of the overall structure of an embodiment of the U-tube detection device and the U-tube bending all-in-one machine according to the present application; and

[0018] Figure 2 Fig. 2 shows a schematic diagram of the U-tube detection device of the U-tube detection device and the U-tube bending all-in-one machine according to the present application; Figure 1 Fig. 3 shows a partial enlarged view of A shown in Fig. 2;

[0019] Figure 3 Fig. 4 shows a schematic diagram of the structure of an embodiment of the U-tube detection device of the U-tube detection device and the U-tube bending all-in-one machine according to the present application;

[0020] Figure 4 Fig. 5 shows a sectional view of an embodiment of the U-tube detection device of the U-tube detection device and the U-tube bending all-in-one machine according to the present application;

[0021] Figure 5 Fig. 6 shows a schematic diagram of another perspective view of the U-tube detection device shown in Fig. 2; Figure 3 Fig. 7 shows a schematic diagram of the structure of another perspective view of the U-tube detection device shown in Fig. 2;

[0022] Figure 6 Fig. 8 shows a schematic diagram of the structure of the detection sleeve of the U-tube detection device according to the present application when the outer end surface of the detection sleeve abuts on the welding ring; Figure 1 Fig. 9 shows a schematic diagram of the structure of the detection sleeve of the U-tube detection device according to the present application when the outer end surface of the detection sleeve abuts on the welding ring; Fig. 10 shows a schematic diagram of the structure of the detection sleeve of the U-tube detection device according to the present application when the outer end surface of the detection sleeve abuts on the welding ring;

[0023] Fig. 11 shows a schematic diagram of the structure of the detection sleeve of the U-tube detection device according to the present application when the outer end surface of the detection sleeve abuts on the welding ring; Figure 7 Fig. 12 shows a schematic diagram of the structure of the detection sleeve of the U-tube detection device according to the present application when the outer end surface of the detection sleeve abuts on the welding ring; Figure 6 Fig. 13 shows a top view of the U-tube detection device shown in Fig. 2;

[0024] Figure 8 Fig. 14 shows a top view of the U-tube detection device of the U-tube detection device according to the present application when the outer end surface of the detection sleeve abuts on the mold.

[0025] Wherein, the above-mentioned drawings include the following reference signs:

[0026] 10, mold; 30, support seat; 60, driving component; 80, elastic member;

[0027] 20, U-tube to be detected; 210, U-tube body; 220, welding ring;

[0028] 40, detection assembly; 410, detection rod; 420, detection sleeve;

[0029] 430, connecting rod; 431, first connecting rod segment; 432, second connecting rod segment; 433, third connecting rod segment;

[0030] 401, annular slot;

[0031] 50, induction assembly; 510, first induction component; 520, second induction component;

[0032] 521, induction body; 522, induction opening;

[0033] 70. Mounting plate assembly; 710. First mounting plate; 720. Second mounting plate; 730. Third mounting plate;

[0034] 711. Installation cavity;

[0035] 721. Install through holes. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] like Figures 1 to 8 As shown, the U-tube detection device of the present invention detects a U-tube 20 to be tested, which is clamped on a mold 10. The U-tube 20 to be tested includes a U-tube body 210 and a welding ring 220 sleeved on the U-tube body 210. The U-tube detection device includes: a support base 30, fixed to one side of the mold 10; and a detection assembly 40, including a detection rod 410 and a detection sleeve 420 sleeved outside the detection rod 410. The detection sleeve 420 and the detection rod 410 are both located on the support base 30 near the U-tube 20 to be tested. On the side, an annular slot 401 is formed between the detection sleeve 420 and the detection rod 410 for inserting the end of the U-tube body 210. The outer end face of the detection sleeve 420 is used to abut against the welding ring 220. The detection sleeve 420 and the detection rod 410 are both movably arranged relative to the support base 30 in a predetermined direction, so that when the end of the U-tube body 210 is inserted into the annular slot 401 and the outer end face of the detection sleeve 420 abuts against the welding ring 220, it indicates that the U-tube 20 to be tested is a qualified product.

[0038] In this way, the U-tube detection device of the present application can directly detect whether the welding ring 220 is correctly sleeved on the U-tube body 210 and whether the pipe opening of the U-tube body 210 is damaged through the physical contact mode of the detection sleeve 420, the detection rod 410 and the U-tube body 210 and the welding ring 220 on the U-tube body 210. Compared with the traditional visual detection method, the detection result of the U-tube detection device of the present application is not affected by environmental light, temperature and humidity or complex background and other factors, which significantly improves the stability and reliability of the detection, and the design of the detection assembly 40 makes the detection operation more direct and fast. When the end of the U-tube body 210 is inserted into the annular slot 401 and the outer end face of the detection sleeve 420 abuts on the welding ring 220, it can be judged that the U-tube 20 to be detected is a qualified product. There is no need for complex image acquisition, processing and analysis steps, which greatly simplifies the detection process and improves the production efficiency. The U-tube detection device of the present application adopts a combination of mechanical structure and sensor, which significantly reduces the hardware cost compared with the high-performance visual detection system. The detection principle is simple and does not require complex training data and algorithm model, effectively solving the problem of high maintenance cost of the detection method of the small U-tube adopted by the existing bending and sleeving integrated machine.

[0039] As shown in Figures 3 to 5 The U-tube detection device comprises a sensing assembly 50 arranged on the side of the detection assembly 40 away from the U-tube 20 to be detected. The sensing assembly 50 is arranged correspondingly with the detection assembly 40 to detect the movement position of the detection assembly 40, so as to judge whether the end of the U-tube body 210 is inserted into the annular slot 401 and whether the outer end face of the detection sleeve 420 abuts on the welding ring 220, so as to judge whether the U-tube 20 to be detected is a qualified product.

[0040] The sensing assembly 50 of the present application can accurately detect the movement position of the detection assembly 40, so as to judge whether the end of the U-tube body 210 is completely inserted into the annular slot 401 and whether the outer end face of the detection sleeve 420 abuts on the welding ring 220. This accurate positioning detection ensures that only when the U-tube body 210 and the welding ring 220 are correctly assembled can a qualified detection signal be given, which greatly reduces the false detection rate. The sensing assembly 50 can quickly respond to the movement change of the detection assembly 40 and feedback the detection result to the control system in time, which is beneficial to speed up the entire detection process and shorten the detection time of a single U-tube 20 to be detected, thereby improving the output efficiency of the entire production line.

[0041] As shown in Figure 1As shown, the U-tube detection device further comprises a driving component 60, which is arranged on the support base 30 and drivingly connected with the detection assembly 40; and a mounting plate assembly 70, on which the detection assembly 40 is arranged and at least partially located on a side of the mounting plate assembly 70 close to the U-tube 20 to be detected, and the driving component 60 is drivingly connected with the mounting plate assembly 70 to drive the detection assembly 40 to move along a predetermined direction.

[0042] The introduction of the driving component 60 realizes the automatic movement of the detection assembly 40, and the contact and separation of the detection assembly 40 and the U-tube 20 to be detected can be accurately controlled according to the preset detection program or control signal, thereby ensuring the consistency of the detection process and the reliability of the detection result; the mounting plate assembly 70 serves as a bearing platform of the detection assembly 40, so that the detection assembly 40 can quickly and smoothly move along the predetermined direction, and is used in cooperation with the driving component 60 to significantly improve the response speed and movement efficiency of the detection assembly 40, thereby improving the entire process speed of the U-tube detection.

[0043] As shown in Figure 3 The U-tube detection device further comprises a sensing assembly 50, and the mounting plate assembly 70 comprises a first mounting plate 710, an installation cavity 711 is arranged in the first mounting plate 710, and at least part of the detection assembly 40 is located in the installation cavity 711; and a second mounting plate 720, which is arranged corresponding to the first mounting plate 710 and located on a side of the first mounting plate 710 away from the U-tube 20 to be detected, and the sensing assembly 50 is arranged on the second mounting plate 720.

[0044] Preferably, the sensing assembly 50 is arranged on the second mounting plate 720 and maintains a constant relative position with the detection assembly 40, which ensures the continuous and accurate monitoring of the state of the detection assembly 40 by the sensing assembly 50. This precise position control helps to improve the accuracy of the U-tube state judgment during the detection process and reduce the occurrence of false positives and missed detections.

[0045] Preferably, the installation cavity 711 inside the first mounting plate 710 provides shielding and protection for the detection assembly 40, reducing the influence of external environmental factors such as vibration, dust or temperature fluctuation on the detection assembly 40, thereby enhancing the stability and consistency of the detection process. At the same time, the position selection of the second mounting plate 720 also avoids the physical interference of the sensing assembly 50 during the U-tube detection process, ensuring the reliability of the signal detection.

[0046] As shown in Figure 4As shown, the detection assembly 40 comprises a connecting rod 430 located on the side of the detection sleeve 420 and the detection rod 410 away from the U-shaped pipe 20 to be detected, and connected with the detection sleeve 420 and the detection rod 410, and comprising a first connecting rod segment 431 and a second connecting rod segment 432 connected in sequence in the direction away from the U-shaped pipe 20 to be detected, the outer diameter of the first connecting rod segment 431 being larger than that of the second connecting rod segment 432; the first connecting rod segment 431 is located in the first mounting plate 710, and at least part of the second connecting rod segment 432 is located in the second mounting plate 720; wherein the inductive assembly 50 is correspondingly arranged with the second connecting rod segment 432 to detect the movement position of the second connecting rod segment 432 to obtain the movement position of the detection assembly 40.

[0047] The special design of the connecting rod 430 in the application, i.e., the outer diameter of the first connecting rod segment 431 is larger than that of the second connecting rod segment 432, provides a clear detection reference for the inductive assembly 50, ensures that the inductive assembly 50 can accurately identify the small movement position change of the detection assembly 40, and can provide stable and reliable feedback signals even in high-speed and high-load environments, greatly improving the detection accuracy and reaction speed of the device; the power transmission and position feedback of the detection sleeve 420 and the detection rod 410 are combined through the connecting rod 430, ensuring the synchronous and smooth movement of the two parts during the detection process, and the first connecting rod segment 431 is shielded and protected inside the first mounting plate 710, which can avoid external interference, while the thin diameter part of the second connecting rod segment 432 facilitates accurate interaction with the inductive assembly 50, ensuring the stability and reliability of the detection assembly 40 during the entire detection process.

[0048] Specifically, the connecting rod 430 further comprises a third connecting rod segment 433 arranged at the end of the first connecting rod segment 431 away from the second connecting rod segment 432, and the outer diameter of the first connecting rod segment 431 is smaller than that of the third connecting rod segment 433; the mounting cavity 711 is provided with an elastic member 80 extending along the extension direction of the first mounting plate 710, the elastic member 80 is sleeved on the first connecting rod segment 431 and located in the mounting cavity 711, and the two ends of the elastic member 80 are respectively in abutment with the end of the third connecting rod segment 433 and the cavity wall surface of the mounting cavity 711.

[0049] The arrangement of the elastic member in the application enables the detection assembly 40 to automatically reset after completing a detection, preparing for the next detection, and this automatic reset mechanism ensures the continuity and smoothness of the detection process, avoids the delay and error of manual operation, and improves the production efficiency. At the same time, the elastic member 80 can play a buffering role when the detection assembly 40 is subjected to abnormal impact or overload, protecting the detection assembly 40 from damage and enhancing the durability and safety of the device.

[0050] The outer diameter of the first connecting rod segment 431 is smaller than that of the third connecting rod segment 433, which provides an additional positioning reference for the displacement of the detection assembly 40. Since the two ends of the elastic member 80 abut against the end of the third connecting rod segment 433 and the cavity wall surface of the mounting cavity 711 respectively, it is ensured that the displacement of the detection assembly 40 can be accurately controlled and fed back, thereby improving the detection accuracy. In particular, in the case where the displacement needs to be fine-tuned or finely controlled, this design can provide more sensitive and accurate detection results.

[0051] As shown in Figure 4 and Figure 6 , the second mounting plate 720 is further provided with a mounting through hole 721, and the second connecting rod segment 432 is movably inserted into the mounting through hole 721; the induction assembly 50 includes a first induction component 510, which is arranged above the second mounting plate 720, and the second connecting rod segment 432 is provided with a first detection position, and the first induction component 510 is provided with a first induction probe facing the mounting through hole 721, for detecting the first movement position of the first detection position relative to the mounting through hole 721, so as to judge whether the outer end surface of the detection sleeve 420 abuts on the welding ring 220 according to the first movement position.

[0052] The first induction component 510 can provide real-time feedback on whether the detection sleeve 420 successfully abuts on the welding ring 220 by detecting the first movement position of the first detection position on the second connecting rod segment 432 relative to the mounting through hole 721. This precise contact detection avoids uncertainty in the detection process, ensuring that the device will only judge the U-tube as qualified when the detection sleeve 420 correctly contacts the welding ring 220, significantly improving the reliability and accuracy of the detection.

[0053] Specifically, the induction assembly 50 further includes a second induction component 520, which includes an induction body 521 and a second induction probe connected thereto, and the induction body 521 is provided with an induction opening 522, the induction body 521 is arranged on the second mounting plate 720 and located on the side of the second mounting plate 720 away from the first mounting plate 710, and the second connecting rod segment 432 is provided with a second detection position, which is located on the side of the first detection position away from the first connecting rod segment 431; the induction opening 522 is in communication with the mounting through hole 721, and the second induction probe is arranged towards the induction opening 522 for detecting the second movement position of the second detection position relative to the induction opening 522, so as to judge whether the end of the U-tube body 210 is inserted into the annular insertion slot 401 according to the second movement position.

[0054] The addition of the second sensing component 520 enables the device to not only detect the contact state of the detection sleeve 420 and the welding ring 220, but also to determine whether the end of the U-tube body 210 is correctly inserted into the annular insertion slot 401. This comprehensive detection capability covers various defects that the U-tube may encounter during detection, improving the overall functionality and detection efficiency of the detection device. By detecting the second movement position of the second detection position relative to the sensing opening 522, the device can accurately determine the insertion state of the end of the U-tube body 210, avoiding false positives caused by positional deviation or insufficient insertion depth.

[0055] As shown in Figure 6 The mounting plate assembly 70 includes a third mounting plate 730 connected to the output end of the driving component 60, and the first mounting plate 710 and the second mounting plate 720 are both arranged on the third mounting plate 730 to move the first mounting plate 710 and the second mounting plate 720 under the driving of the driving component 60.

[0056] Specifically, the third mounting plate 730 includes a first connecting plate body and a second connecting plate body perpendicular to each other, the first connecting plate body is arranged at the output end of the driving component 60, and the second connecting plate body is connected to the first mounting plate 710 and the second mounting plate 720 and located on the side of the driving component 60 away from the support base 30.

[0057] The addition of the third mounting plate 730 enables the detection assembly 40 and the sensing assembly 50 to move quickly to the detection position or reset as a whole under the driving of the driving component 60, reducing the adjustment time of the assemblies before and after detection, thereby improving the detection speed and the efficiency of the production line. The third mounting plate 730 provides stronger structural rigidity and stability as a common support for the first mounting plate 710 and the second mounting plate 720, effectively reducing vibration and displacement during detection, ensuring accurate positioning and stable operation of the detection assembly 40 and the sensing assembly 50 during high-speed movement, and improving detection accuracy.

[0058] The application also provides a U-tube detection device, which comprises a mold and a U-tube detection device, the mold is used to clamp a U-tube, and the U-tube detection device is used to detect the assembly state of the U-tube and a welding ring sleeved on the U-tube.

[0059] The application of the above-mentioned U-tube detection device in the U-tube bending machine not only significantly improves the quality control and production efficiency of the product, but also reduces costs, improves working environment, and improves automation and intelligence level, which plays an important role in promoting technical innovation and production optimization in the refrigeration industry.

[0060] Preferably, the application point of the application includes the innovative combination of mechanical structure and sensor: traditional visual detection relies on image processing algorithm, while the application replaces visual analysis with physical contact detection, avoiding the complex process of image acquisition, processing and analysis, significantly improving the stability and reliability of detection.

[0061] Preferably, the application point of the application includes the innovative combination of mechanical structure and sensor: traditional visual detection relies on image processing algorithm, while the application replaces visual analysis with physical contact detection, avoiding the complex process of image acquisition, processing and analysis, significantly improving the stability and reliability of detection.

[0062] Preferably, the driving part 60 of the application is a double-shaft air cylinder. When the double-shaft air cylinder works, the detection rod 410 and the detection sleeve 420 move forward to contact the U-tube 20 to be detected, and the detection sleeve 420 can push the welding ring 220 that is not in place to the place.

[0063] The three detection modes of the application are as follows:

[0064] As shown in Figure 7 , if the U-tube 20 to be detected is qualified, the detection sleeve 420 will push against the welding ring 220, and the detection rod 410 will extend into the U-tube body 210, the connecting rod 430 will retreat by the thickness of the welding ring 220, about 1.3mm, the first sensing part 510 senses the connecting rod 430, and the second sensing part 520 does not sense the connecting rod 430, and according to this condition, a signal is given to judge that the U-tube 20 to be detected is qualified.

[0065] As shown in Figure 8 , the stroke of the U-tube detection device is set in advance, and when it stops at the position of the mold 10, if the U-tube 20 to be detected lacks the welding ring 220, the detection sleeve 420 will push against the mold 10, and the detection rod 410 will extend into the U-tube body 210, at this time the connecting rod 430 does not move throughout the process, and the first sensing part 510 and the second sensing part 520 do not sense the connecting rod 430, and according to this condition, a signal is given to judge that the U-tube 20 to be detected is unqualified.

[0066] As shown in Figure 6 , if the U-tube 20 to be detected is damaged, at this time the U-tube will collapse inward, the detection sleeve 420 will push against the welding ring 220, the detection rod 410 will push to the position of the mouth of the U-tube body 210 and will not enter the U-tube body 210, and the connecting rod 430 will retreat by about 5mm, and the first sensing part 510 and the second sensing part 520 will sense the connecting rod 430, and according to this condition, a signal is given to judge that the U-tube 20 to be detected is unqualified.

[0067] From the above description, it can be seen that the above-mentioned embodiments of the application achieve the following technical effects:

[0068] The U tube detection device of the present application detects the U tube 20 to be detected clamped on the mold 10, which includes a U tube body 210 and a welding ring 220 sleeved on the U tube body 210, and comprises: a support seat 30 fixed on one side of the mold 10; a detection assembly 40 comprising a detection rod 410 and a detection sleeve 420 sleeved outside the detection rod 410, the detection sleeve 420 and the detection rod 410 are located on the side of the support seat 30 close to the U tube 20 to be detected, an annular insertion slot 401 for inserting the end of the U tube body 210 is formed between the detection sleeve 420 and the detection rod 410, and the outer end face of the detection sleeve 420 is used to abut against the welding ring 220; wherein the detection sleeve 420 and the detection rod 410 are movably arranged relative to the support seat 30 in a predetermined direction, so that when the end of the U tube body 210 is inserted into the annular insertion slot 401 and the outer end face of the detection sleeve 420 abuts on the welding ring 220, it indicates that the U tube 20 to be detected is a qualified product.

[0069] It can be seen that the U tube detection device of the present application can directly detect whether the welding ring 220 is correctly sleeved on the U tube body 210 and whether the pipe opening of the U tube body 210 is damaged through the physical contact mode of the detection sleeve 420, the detection rod 410, the U tube body 210 and the welding ring 220 on the U tube body 210. Compared with the traditional visual detection method, the detection result of the U tube detection device of the present application is not affected by environmental light, temperature and humidity or complex background and other factors, which significantly improves the stability and reliability of the detection, and the design of the detection assembly 40 makes the detection operation more direct and fast. When the end of the U tube body 210 is inserted into the annular insertion slot 401 and the outer end face of the detection sleeve 420 abuts on the welding ring 220, it can be judged that the U tube 20 to be detected is a qualified product, without complex image acquisition, processing and analysis steps, greatly simplifying the detection process and improving the production efficiency. The U tube detection device of the present application adopts the combination mode of mechanical structure and sensor, compared with the high-performance visual detection system, the hardware cost is significantly reduced, the detection principle is simple, and complex training data and algorithm model are not required, effectively solving the problem of high maintenance cost required by the detection mode of the small U tube adopted by the existing bending and sleeving integrated machine.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0071] The foregoing description, for purposes of clarity, describes the present application in terms of its components, processes and operations. Such descriptions and representations are the means used by those skilled in the art of describing the technical fabric of the present application. There is, of course, a variety of ways to manufacture the present application as described above, and the present application should be understood to encompass all such variations. The above description is that of current embodiments of the application. Various alterations, modifications and improvements will readily occur to those skilled in the art. The application has been shown and described with reference to exemplary embodiments. Those skilled in the art will readily devise their own implementations that, although not explicitly described or shown herein, embody the principles of the application, and are included within its spirit and scope. Accordingly, all such variations are considered within the scope of the present application. Any and all patents and patent applications mentioned are incorporated by reference in their entirety for all purposes.

[0072] In the description of the present application, it is to be understood that the specific location or position relationships indicated by the orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary description, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0073] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0074] In addition, it should be noted that the use of the words "first", "second" and the like to describe various components is merely intended to distinguish the corresponding components, and the words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0075] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A U-tube detection device, characterized by, The application discloses a U-tube detection device. A support base (30) is fixed to one side of the mold (10). A detection assembly (40) is arranged on the support base (30) and comprises a detection rod (410) and a detection sleeve (420) sleeved outside the detection rod (410). The detection sleeve (420) and the detection rod (410) are arranged on the side of the support base (30) close to the U-tube (20) to be detected. An annular insertion slot (401) is formed between the detection sleeve (420) and the detection rod (410) for inserting the end of the U-tube body (210). The outer end surface of the detection sleeve (420) is used for abutting against the welding ring (220). The detection sleeve (420) and the detection rod (410) are movably arranged relative to the support base (30) in a predetermined direction. When the end of the U-tube body (210) is inserted into the annular insertion slot (401) and the outer end surface of the detection sleeve (420) abuts against the welding ring (220), it indicates that the U-tube (20) to be detected is a qualified product.

2. The U-tube detection device of claim 1, wherein, The U-tube detection device comprises: An induction assembly (50) is arranged on the side of the detection assembly (40) away from the U-tube (20) to be detected. The induction assembly (50) is arranged in correspondence with the detection assembly (40) and is used for detecting the movement position of the detection assembly (40). Whether the end of the U-tube body (210) is inserted into the annular insertion slot (401) and whether the outer end surface of the detection sleeve (420) abuts against the welding ring (220) is determined according to the movement position of the detection assembly (40), so as to determine whether the U-tube (20) to be detected is a qualified product.

3. The U-tube detection device of claim 1, wherein, The U-tube detection device further comprises: A driving component (60) is arranged on the support base (30) and is drivingly connected with the detection assembly (40). An installation plate assembly (70) is arranged on the support base (30) and is arranged on the side of the installation plate assembly (70) close to the U-tube (20) to be detected. The driving component (60) is drivingly connected with the installation plate assembly (70) to drive the detection assembly (40) to move in the predetermined direction.

4. The U-tube detection device of claim 3, wherein, The U-tube detection device further comprises an induction assembly (50). The installation plate assembly (70) comprises: A first installation plate (710) is arranged in the installation plate assembly (70) and comprises an installation cavity (711). At least part of the detection assembly (40) is arranged in the installation cavity (711). A second mounting plate (720) is arranged corresponding to the first mounting plate (710) and located on a side of the first mounting plate (710) away from the U-shaped pipe (20) to be detected, and the inductive assembly (50) is arranged on the second mounting plate (720).

5. The U-tube detection device of claim 4, wherein, The detection assembly (40) comprises: A connecting rod (430) is located on a side of the detection sleeve (420) and the detection rod (410) away from the U-shaped pipe (20) to be detected, and the connecting rod (430) is connected with the detection sleeve (420) and the detection rod (410). In a direction away from the U-shaped pipe (20) to be detected, the connecting rod (430) comprises a first connecting rod segment (431) and a second connecting rod segment (432) connected in sequence, and an outer diameter of the first connecting rod segment (431) is greater than an outer diameter of the second connecting rod segment (432). The first connecting rod segment (431) is located in the first mounting plate (710), and at least part of the second connecting rod segment (432) is located in the second mounting plate (720). The inductive assembly (50) is arranged corresponding to the second connecting rod segment (432) to detect a movement position of the second connecting rod segment (432) to obtain a movement position of the detection assembly (40).

6. The U-tube detection device of claim 5, wherein, The connecting rod (430) further comprises a third connecting rod segment (433) arranged at an end of the first connecting rod segment (431) away from the second connecting rod segment (432), and an outer diameter of the first connecting rod segment (431) is smaller than an outer diameter of the third connecting rod segment (433). An elastic member (80) is arranged in the mounting cavity (711) and extends along an extension direction of the first mounting plate (710). The elastic member (80) is sleeved on the first connecting rod segment (431) and located in the mounting cavity (711), and two ends of the elastic member (80) respectively abut against end portions of the third connecting rod segment (433) and a cavity wall surface of the mounting cavity (711).

7. The U-tube detection device of claim 5, wherein, The second mounting plate (720) further comprises a mounting through hole (721), and the second connecting rod segment (432) is movably inserted in the mounting through hole (721). The inductive assembly (50) comprises a first inductive component (510) arranged above the second mounting plate (720). The second connecting rod segment (432) is provided with a first detection position, and a first inductive probe of the first inductive component (510) is arranged towards the mounting through hole (721) to detect a first movement position of the first detection position relative to the mounting through hole (721) to determine whether an outer end surface of the detection sleeve (420) abuts against the welding ring (220) according to the first movement position.

8. The U-tube detection device of claim 7, wherein, The induction assembly (50) further comprises a second induction component (520), the second induction component (520) comprising a connected induction body (521) and a second induction probe, the induction body (521) being provided with an induction opening (522), the induction body (521) being arranged on the second mounting plate (720) and located on a side of the second mounting plate (720) away from the first mounting plate (710), the second connecting rod segment (432) being provided with a second detection position, the second detection position being located on a side of the first detection position away from the first connecting rod segment (431); the induction opening (522) being in communication with the mounting through hole (721), the second induction probe being arranged towards the induction opening (522) for detecting a second movement position of the second detection position relative to the induction opening (522) so as to determine whether the end of the U-tube body (210) is inserted into the annular insertion slot (401) according to the second movement position.

9. The U-tube detection device of claim 4, wherein, The mounting plate assembly (70) comprises: a third mounting plate (730) connected with an output end of the driving component (60), the first mounting plate (710) and the second mounting plate (720) being arranged on the third mounting plate (730) so as to drive the first mounting plate (710) and the second mounting plate (720) to move under the driving of the driving component (60).

10. A pipe bending machine, characterized by comprising: comprises: a mold for clamping a U-tube and a U-tube detection device for detecting the assembly state of the U-tube and a welding ring sleeved on the U-tube, the U-tube detection device being the U-tube detection device according to any one of claims 1 to 9.

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