Sensor shell copper pipe stamping quality detection equipment

Abstract

The application relates to the field of fluid leakage detection technology, in particular to a sensor shell copper pipe stamping quality detection equipment, which comprises a detection module, the detection module comprises a detection container, a vacuum suction accessory and a detection piece; the detection container is used for placing a detection liquid and a copper pipe shell to be detected; the vacuum suction accessory is used for plugging the opening of the copper pipe shell and vacuumizing the inside of the copper pipe shell; the detection piece comprises a vacuum degree sensor arranged at the position of the vacuum suction accessory for plugging the copper pipe shell and a humidity detection sensor for detecting the humidity in the copper pipe shell. The application reduces the possibility of causing damage to the copper pipe shell in the detection process under the condition of meeting the detection pressure.

Description

Technical Field

[0001] This application relates to the field of fluid leakage detection technology, and in particular to a device for detecting the stamping quality of a copper tube housing for a sensor. Background Technology

[0002] In specific application scenarios, based on the requirements of fast response, stable transmission, and reliable protection, some sensors use copper tubes as housings, and tube structures are currently often mass-produced using stamping processes.

[0003] In the stamping process of copper tubes, a die mounted at its front end is driven forward by a hydraulic cylinder. The center of the die head is coaxial with the central axis of the copper tube, and the die head extrudes the end of the copper tube to form the outer shell. However, due to the rapid plastic deformation that occurs during stamping, defects such as pores or thin walls in some areas are prone to occur, leading to leakage problems. To detect these problems in a timely manner, fluid leakage detection of the copper tube shell is often necessary. In existing technology, the commonly used detection method is the pressurized bubble method. The detection process involves clamping and fixing the copper tube, ensuring a tight fit between the copper tube and the plug through external mechanical pressure. Then, the inside of the copper tube is pressurized and immersed in water, and the bubbles are observed to visually detect whether leakage occurs and to locate the leakage point.

[0004] While the aforementioned pressurized bubble method is intuitive, the testing process requires mechanical clamping and pressurization of the copper tube shell. However, the copper tube shell, being a sensor, has thin walls and relatively limited strength, making it highly susceptible to damage and deformation during clamping and pressurization. This can lead to defects in the copper tube shell during testing due to external factors, potentially resulting in false positives. Conversely, reducing the clamping force or pressure can lead to insufficient sealing, preventing the testing from meeting the required conditions. Therefore, finding a way to minimize damage to the copper tube shell during testing while maintaining the required pressure and reducing the likelihood of false positives is a pressing issue that needs to be addressed. Summary of the Invention

[0005] In order to reduce damage to the copper tube shell during the testing process while meeting the testing pressure, and to reduce the possibility of false detection, this application provides a sensor shell copper tube stamping quality testing device.

[0006] This application provides a sensor housing copper tube stamping quality inspection device, which adopts the following technical solution: A quality inspection device for stamping copper tube housings of sensors includes an inspection module. The inspection module includes an inspection container, a vacuum adsorption component, and an inspection component. The inspection container is used to hold the inspection liquid and the copper tube housing to be inspected. The vacuum adsorption component is used to seal the opening of the copper tube housing and to evacuate the inside of the copper tube housing. The inspection component includes a vacuum sensor disposed at the portion of the vacuum adsorption component that seals the copper tube housing and a humidity sensor for detecting the humidity inside the copper tube housing.

[0007] Optionally, the testing container is covered with a testing cover plate, which has testing holes for fitting and fixing the copper tube shell.

[0008] Optionally, a fixed spring tube extending toward the inside of the detection container is fixed inside the detection hole. The fixed spring tube is made of elastic material and the diameter of the inner wall of the fixed spring tube gradually decreases from the outside to the inside.

[0009] Optionally, the detection module further includes a detection bracket, wherein the vacuum adsorption component is vertically slidably disposed on the detection bracket, and the detection container is horizontally slidably disposed on the detection bracket.

[0010] Optionally, the detection bracket is provided with a detection drive for driving the vacuum adsorption component to slide vertically and a container drive for driving the detection container to slide laterally.

[0011] Optionally, the vacuum adsorption component is provided with at least one detection component, and the detection module includes several vacuum adsorption components. The detection bracket is vertically slidably provided with a detection support, the vacuum adsorption component is disposed on the detection support, and the detection driving component drives the vacuum adsorption component to move vertically by driving the detection support.

[0012] Optionally, the detection module is provided in several groups, and also includes a transfer module for batch placing or removing the copper tube shells to be tested from the detection container.

[0013] Optionally, several of the detection modules are arranged in a straight line and the detection container moves out on the same side relative to the detection support. The transfer module includes a fixing component for batch adsorption or clamping of the copper tube shell and a moving component for controlling the fixing component to move the copper tube shell between the target area and the detection container.

[0014] Optionally, the fixing assembly includes a fixing support and several fixing parts disposed on the fixing support and temporarily fixing the copper tube shell by vacuum adsorption or clamping.

[0015] Optionally, it may also include at least a drying assembly for drying the copper tube housing before testing, the drying assembly including an air blower for outputting compressed gas and a drying control for controlling the air blower to extend into or approach the opening of the copper tube housing.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. During testing, the copper tube shell is first placed inside the tube rack on the platform. Then, the platform moves the tube rack past the gantry and pauses. After adjusting the spacing of the air blowing components, the copper tube shell is thoroughly dried before moving towards the testing module until it is directly below one end of the fixed support's moving path. This allows for temporary fixation by the fixing components and the transfer of the copper tube shell. Subsequently, the horizontal linear slide rail, in conjunction with the vertical linear slide rail, temporarily adsorbs and fixes several dried copper tube shells and transfers them into the testing container. By fixing them with a fixed spring tube sleeve, the possibility of liquid around the testing container entering the copper tube shell during the insertion of the fixed spring tube can be significantly reduced.

[0017] 2. During the testing process, the copper tube shell is placed vertically inside the testing container containing liquid, allowing the testing container to slide into the inside of the testing bracket and be positioned below the testing support. Then, the testing support moves down so that the opening of the copper tube shell can contact the vacuum adsorption component. At the same time, the detection ends of the vacuum sensor and humidity sensor are both located inside the copper tube shell. Then, a vacuum is drawn, causing the copper tube shell to be tightly and automatically adhered to the adsorption end of the vacuum adsorption component under negative pressure, without the need for external clamping or pressure to maintain contact and seal. This significantly reduces the possibility of damage to the copper tube shell due to clamping or excessive local pressure applied externally. After the vacuum sensor detects that the vacuum level inside the copper tube casing is relatively stable and confirms that the vacuum level remains within a preset range, the humidity sensor detects humidity changes and outputs data to the outside. At this point, an external receiver, such as an analyzer, can generate humidity and vacuum level change curves during the detection process. If a short-term increase in humidity is observed inside the copper tube casing without a change in vacuum, then liquid was present inside the copper tube casing before detection and stabilized after vaporization under vacuum. If the vacuum level continues to change significantly and continuously after a certain period of adsorption, and abnormal changes in humidity are detected, then... There are leakage points inside the copper pipe casing. In a normal, leak-free copper pipe casing, the vacuum level and humidity are relatively stable. However, if there is an intermittent or minor leakage, the liquid will vaporize after seeping in due to the high vacuum, causing the vacuum level to drop and the humidity to increase. After the vaporized liquid is pumped out, the vacuum level will recover and the humidity will decrease. If there is a continuous leakage, the continuous seepage and vaporization of liquid will cause the humidity to rise and the vacuum level to drop before remaining within a relatively stable range. This is used to determine the size of the leakage, optimize the accuracy of detection, and reduce the possibility of false detection. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of this embodiment.

[0019] Figure 2This is a partial structural diagram of this embodiment.

[0020] Figure 3 This is a cross-sectional view of the detection module in this embodiment.

[0021] Figure 4 This is a schematic diagram of the detection module in this embodiment.

[0022] Figure 5 yes Figure 3 A magnified structural diagram of part B.

[0023] Figure 6 This is a cross-sectional view of the fixed missile tube in this embodiment.

[0024] Figure 7 yes Figure 1 A magnified structural diagram of part A in the middle.

[0025] Explanation of reference numerals in the attached drawings: 1. Detection container; 10. Detection linear slide rail; 11. Detection cover plate; 111. Detection hole; 112. Fixing spring tube; 113. Spring bar; 12. Container driving component; 2. Vacuum adsorption component; 21. Detection driving component; 22. Detection support; 221. Vacuum linear slide rail; 23. Detection spring; 3. Detection component; 31. Vacuum sensor; 32. Humidity sensor; 4. Detection bracket; 41. Fixing linear slide rail; 42. Abutment seat; 43. Control screw; 431. Positioning block; 5. Fixing component; 51. Fixing support; 52. Fixing component; 6. Moving component; 61. Horizontal linear slide rail; 611. Fixing bracket; 62. Vertical linear slide rail; 7. Drying component; 71. Air blowing component; 72. Drying control component; 721. Gantry frame; 722. Linear slide rail; 8. Quality inspection base; 81. Storage platform. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0027] This application discloses a device for inspecting the stamping quality of copper tubes for sensor housings. (Refer to...) Figure 1 , Figure 2 and Figure 3 A quality inspection device for stamping copper tubes for sensor housings includes an inspection base 8, a transfer module, and several inspection modules. The top of the inspection base 8 is a mounting platform, and the inspection modules are arranged in a straight line. The inspection modules are used to inspect the copper tube housings. The transfer module is located on the mounting platform at the top of the inspection base 8 and is situated on the side where the copper tube housing is output by the inspection module.

[0028] Specifically, the detection module includes a detection container 1, a vacuum adsorption component 2, and a detection component 3 (see...). Figure 5The system includes a testing bracket 4, which is slidably connected to the mounting platform on top of the quality inspection base 8 via two fixed linear slide rails 41. One end of the testing bracket 4, sliding along the fixed linear slide rails 41, abuts against a stop seat 42 fixed to the quality inspection base 8. The other end of the testing bracket 4, sliding along the fixed linear slide rails 41, abuts against a control screw 43. The term "fixed" in the description of the fixed linear slide rails 41 is merely for identification purposes and has no limiting use. The control screw 43 passes through and is threadedly connected to a positioning block 431 fixed to the quality inspection base 8 to achieve positioning and fixation of the testing bracket 4. Simultaneously, the position of the testing bracket 4 can be adjusted by replacing the stop seat 42, and the testing bracket 4 can be fixed by rotating the control screw 43. The sliding directions of the fixed linear slide rails 41 are parallel to each other.

[0029] Reference Figure 1 , Figure 2 and Figure 3 The detection container 1 has an open top structure and is used to hold the detection liquid to assist in the detection of the copper tube shell. The liquid can be ordinary water or an easy-to-mark and identify liquid, such as fluorescent tracer leak detector, water-based fluorescent leak detector, etc.

[0030] The detection container 1 is slidably connected to the detection bracket 4 via the detection linear slide rail 10, and the sliding direction of the detection linear slide rail 10 is parallel to the sliding direction of the detection linear slide rail 10. The detection bracket 4 is fixed with a container drive component 12 for driving the detection container 1 to slide. The container drive component 12 can be a linear propulsion component, such as a cylinder, electric cylinder or linear motor, etc. That is, the container drive component 12 is fixedly installed on the detection bracket 4, and the telescopic end of the container drive component 12 is hinged or fixed to the detection container 1 to control the sliding of the detection container 1.

[0031] Reference Figure 2 , Figure 3 and Figure 4 At least one vacuum adsorption element 2 is provided. In this embodiment, several vacuum adsorption elements 2 are provided and arranged in an array. The vacuum adsorption elements 2 are arranged vertically with the vacuum adsorption end facing downward. The detection support 4 is provided with a detection support 22, which is arranged horizontally and vertically slidably connected to the detection support 4 through a vacuum linear slide rail 221. The vacuum adsorption elements 2 are arranged in an array and fixed to the detection support 22, and the projection of the detection support 22 covers the sliding path of the detection container 1, so that the vacuum adsorption elements 2 can slide vertically and perform vacuum adsorption on the copper tube shell inside the detection container 1.

[0032] The detection bracket 4 is equipped with a detection drive component 21 for driving the vacuum adsorption component 2 to slide vertically via the detection support 22. The detection drive component 21 is a linearly driven component, such as a cylinder, linear motor, or electric actuator. In this embodiment, it is a cylinder for rapid response control and is not used to maintain a contact seal with the copper tube shell through pressure. The vacuum adsorption components 2 are arrayed on the detection support 22, and the adsorption end of the vacuum adsorption component 2 is located on the lower side of the detection support 22. The vacuum adsorption component 2 is a vacuum nozzle or other accessory capable of creating a vacuum. At least one detection component 3 is provided on the vacuum adsorption component 2. In this embodiment, one detection component is used as an example. The detection component 3 is located around the nozzle of the vacuum adsorption component 2 and is located inside the copper tube shell when in contact with it.

[0033] Reference Figure 2 , Figure 3 and Figure 4 The detection component 3 includes a vacuum sensor 31 for detecting vacuum level and a humidity sensor 32 for detecting humidity. Both the vacuum sensor 31 and the humidity sensor 32 are integrated into the detection end of the vacuum adsorption component 2 so that the changes in vacuum level and humidity inside the copper tube shell can be obtained in real time during detection. Of course, the humidity sensor 32 can also be replaced with a detection sensor corresponding to the tracer liquid to further optimize the detection effect.

[0034] In use, the copper tube shell is placed vertically inside the detection container 1 containing liquid, so that the detection container 1 slides into the inside of the detection bracket 4 and is located below the detection support 22. Then, the detection support 22 moves down so that the opening of the copper tube shell can contact the vacuum adsorption component 2. At the same time, the detection ends of the vacuum sensor 31 and the humidity sensor 32 are both located inside the copper tube shell. Then, a vacuum is drawn, so that the copper tube shell is tightly and automatically adhered to the adsorption end of the vacuum adsorption component 2 under the action of negative pressure, without the need for external clamping and pressure to maintain contact and seal. This significantly reduces the possibility of damage to the copper tube shell due to clamping or excessive local pressure applied externally. After the vacuum sensor 31 detects that the vacuum level inside the copper tube casing is relatively stable and confirms that the vacuum level is within a preset range, the humidity sensor 32 detects humidity changes and outputs data to the outside. At this time, a humidity change curve can be generated through the external receiver. If a short-term increase in humidity is detected inside the copper tube casing without a change in vacuum level, then liquid was present inside the copper tube casing before detection and vaporized under vacuum. If the vacuum level still shows a large and continuous change after a certain period of adsorption, and abnormal humidity changes are detected, then a leak point is determined to exist inside the copper tube casing. That is, in a normal, leak-free copper tube casing, the vacuum level and humidity are relatively stable. However, if a leak exists, after liquid seeps in, the vacuum level decreases and the humidity increases. Subsequently, the vaporized liquid is pumped away, the vacuum level recovers and then decreases again, and the humidity increases. This can also optimize the detection accuracy and reduce the possibility of false detection. At the same time, this process can also simulate the process of external liquid seeping from the outside to the inside of the copper tube casing during use, which is closer to the actual working conditions.

[0035] During the leakage detection process, a judgment is made based on the detection data from the humidity sensor 32 and the vacuum sensor 31. The judgment procedure is as follows: Step S1: Parameter preset.

[0036] The target vacuum level when the vacuum adsorption device performs a vacuuming operation on the copper tube shell is set to X, and the normal fluctuation range of the vacuum level inside the copper tube shell is X±L; the humidity threshold of the ambient air is set to Y; and the preset duration of a single detection is set to M.

[0037] Step S2: Data Acquisition.

[0038] During the detection process, vacuum level data in the detection circuit is collected in real time by vacuum level sensor 31 to generate a vacuum level change curve within a preset time period M; humidity level data in the detection circuit is collected in real time by humidity detection sensor 32 to generate a humidity change curve within a preset time period M.

[0039] Step S3: Status recognition.

[0040] Based on the morphological characteristics of the vacuum degree change curve and humidity change curve, the leakage status of the copper pipe casing is determined. The specific determination is as follows: If, within the preset detection time M, the vacuum degree change curve remains near the target vacuum degree X, and the fluctuation range is within the normal fluctuation range X±L; simultaneously, the humidity change curve remains near the humidity threshold Y, without significant fluctuations, then it is determined that the copper pipe casing has no leakage, no residual liquid, and the copper pipe casing has good sealing performance.

[0041] If, within the preset detection time M, the vacuum degree change curve shows a gradual downward trend and eventually stabilizes below XL or fluctuates within a certain range below it; at the same time, the humidity change curve rises and the rise time is later than the vacuum degree decrease time, and eventually stabilizes above the threshold Y or fluctuates within a certain range above Y, then it is determined that there is no residual liquid inside the copper tube of the outer shell and there is leakage.

[0042] If, within the preset detection time M, the vacuum degree change curve shows a gradual decrease followed by an increase and stabilization within the normal fluctuation range X±L, and the humidity change curve increases in the initial stage of the vacuum degree decrease and then remains stable near the threshold Y, then it is determined that there is residual liquid inside the copper tube of the outer shell but no leakage.

[0043] If, within the preset detection time M, the vacuum degree change curve fluctuates repeatedly below XL, and the humidity change curve is below the threshold Y, both exhibiting an oscillating pattern, then it is determined that liquid remains inside the copper tube of the outer casing and there is a minor leak. This is because the minor leak cannot continuously and stably penetrate the liquid; the liquid's blocking and unblocking of the leak channel is intermittent.

[0044] If, within the preset detection time M, the vacuum degree change curve shows a gradual downward trend and stabilizes below XL; and the humidity change curve changes synchronously with the vacuum degree change curve (i.e., when the vacuum degree decreases, the humidity increases synchronously and stabilizes near the threshold Y), then liquid remains inside the outer copper tube and there is significant leakage. This indicates that the liquid remaining in the outer copper tube evaporates during vacuuming, causing the humidity to decrease synchronously with the vacuum degree.

[0045] If, within the preset detection time M, the vacuum degree change curve shows that the vacuum degree cannot be maintained within the preset range X±L (i.e., the vacuum degree drops abnormally), and the humidity change curve remains stable without any increase, then it is determined that there is a leak at the contact point between the vacuum adsorption component 2 and the copper tube of the adsorbed outer shell. Based on the characteristic of abnormal vacuum degree but normal humidity, it is determined that the adsorption seal has failed rather than the copper tube outer shell is leaking, in order to avoid false detection.

[0046] Reference Figure 5 and Figure 6In addition, in order to enable the vacuum adsorption component 2 to fit and adsorb relatively tightly onto the copper tube shell, the vacuum adsorption component 2 is vertically slidably arranged relative to the detection support 22 and fitted with a detection spring 23. The two ends of the detection spring 23 are respectively fixed to the detection support 22, so that different vacuum adsorption components 2 can simultaneously adsorb copper tube shells with different heights through the elastic extension and contraction of the detection spring 23.

[0047] Specifically, in order to further optimize the stability of the detection, the opening of the detection container 1 is covered and fixed with a detection cover plate 11. The detection cover plate 11 is provided with detection holes 111 corresponding to the array distribution position of the vacuum adsorption component 2, for temporary insertion and fixing of the copper tube shell.

[0048] Reference Figure 3 , Figure 5 and Figure 6 A fixing spring tube 112 extending towards the interior of the detection container 1 is provided inside the detection hole 111. The fixing spring tube 112 is made of an elastic material, such as rubber or silicone. The inner diameter of the fixing spring tube 112 gradually decreases from the outside to the inside, that is, the inner diameter of the fixing spring tube 112 gradually decreases from top to bottom. It is preferably a tapered tube structure with the larger opening facing upwards, so that copper tube shells of different diameters can be inserted for temporary fixation. At the same time, it can also reduce the possibility of liquid in the detection container 1 splashing into the copper tube shell due to vibration caused by the operation of other external components.

[0049] Furthermore, in order to significantly reduce the liquid adhering to the copper tube shell during the process of the copper tube shell passing through the fixed spring tube 112, the liquid level height in the detection container 1, that is, the height of the liquid level from the bottom wall of the detection container 1, is h. During the process of the closed end of the copper tube shell passing through the fixed spring tube 112, the height of the position where the closed end of the copper tube shell first contacts the fixed spring tube 112 from the bottom wall of the detection container 1 is h1. Then h1 > h, so that during the process of the copper tube shell passing through and penetrating the copper tube shell, the liquid in the fixed spring tube 112 can be forced into the detection container 1.

[0050] Reference Figure 5 and Figure 6 The inner wall of the fixed spring tube 112 is embedded with several spring strips 113 to prevent the lower end of the fixed spring tube 112 from rolling inward during the process of pulling out the copper tube shell.

[0051] Reference Figure 7Specifically, in order to optimize the detection efficiency, the transfer module includes a fixing component 5 and a moving component 6. The fixing component 5 is used for batch adsorption or clamping of copper tube shells. In this embodiment, the fixing component 5 includes a fixing support 51 and several fixing parts 52 installed on the fixing support 51. The fixing parts 52 are used to temporarily adsorb and transfer copper tube shells by vacuum adsorption or clamping, such as clamping cylinders or vacuum nozzles. In this embodiment, a vacuum nozzle is preferred.

[0052] The moving component 6 includes a horizontal linear slide rail 61 and a vertical linear slide rail 62. The horizontal linear slide rail 61 is fixedly installed on the mounting platform on top of the quality inspection base 8 via a fixed bracket 611, and the sliding path of the sliding end of the horizontal linear slide rail 61 is parallel to the distribution direction of the several detection modules. The vertical linear slide rail 62 is fixedly installed on the sliding end of the horizontal linear slide rail 61, so that the vertical linear slide rail 62 can be moved towards different detection modules. The fixed support 51 is fixedly installed on the sliding end of the vertical linear slide rail 62, so that it can cooperate with the sliding of the detection container 1 relative to the detection bracket 4, so that the copper tube shell temporarily fixed by the fixing member 52 can be inserted into the fixed spring tube 112 in the detection hole 111. In this embodiment, the horizontal linear slide rail 61 has two sliding ends, and the sliding ends can slide to the outside of several detection modules to facilitate the picking and placing of the copper tube shell. Of course, in other embodiments, the moving component 6 can also use a robotic arm to control multiple vacuum nozzles to adsorb and transfer the copper tube shell.

[0053] Reference Figure 7 In addition, two placement platforms 81 are fixedly installed on the top of the quality inspection base 8. The two placement platforms 81 are located at the input and output positions of the copper tube shells corresponding to the multiple detection modules, and are located between the detection bracket 4 and the fixed bracket 611, for temporary placement of copper tube shells for input or output, such as tube racks for temporary placement of copper tube shells. In this embodiment, the placement platform 81 is a horizontally arranged conveyor belt for controlling the reciprocating movement of the placed tube racks.

[0054] Furthermore, the placement platform 81 is also used for drying the copper tube casing before or after inspection. A drying assembly 7 is installed on the top of the quality inspection base 8, corresponding to the position of the placement platform 81. The drying assembly 7 includes an air blowing component 71 and a drying control component 72. The air blowing component 71 blows out liquid or impurities inside the copper tube casing by outputting compressed gas to reduce interference with the inspection. The drying control component 72 can be a robotic arm, with the air blowing component 71 fixed to the moving end of the robotic arm. In this embodiment, the drying control component 72 includes a gantry 721 spanning the placement platform 81 and a linear slide rail 722 fixed to the gantry 721. The linear slide rail 722 has several moving ends, and the air blowing component 71 is fixed to the moving ends of the linear slide rail 722 to adjust the spacing in real time. This allows for drying of the copper tube casing as the tube rack passes through the gantry 721, optimizing the inspection accuracy.

[0055] The implementation principle of this application embodiment is as follows: During testing, the copper tube shell is first placed in the tube rack on the placement platform 81. Then, the placement platform 81 drives the tube rack to pause when passing the gantry 721. After the spacing of the air blowing component 71 is adjusted, the copper tube shell is fully dried and then moves towards the testing module until it is directly below one end of the path of the fixed support 51, so that the fixing component 52 can temporarily fix it for transfer. After that, the horizontal linear slide rail 61 and the vertical linear slide rail 62 simultaneously adsorb and fix several dried copper tube shells and transfer them into the testing container 1, and fix them by the fixing spring tube 112.

[0056] Subsequently, the copper tube shell is placed vertically inside the detection container 1 containing liquid, allowing the detection container 1 to slide into the inside of the detection bracket 4 and be positioned below the detection support 22. Then, the detection support 22 moves down so that the opening of the copper tube shell can contact the vacuum adsorption component 2. At the same time, the detection ends of the vacuum sensor 31 and the humidity sensor 32 are both located inside the copper tube shell. Then, a vacuum is drawn, causing the copper tube shell to be tightly and automatically adhered to the adsorption end of the vacuum adsorption component 2 under negative pressure, without the need for external clamping or pressure to maintain a contact seal. This significantly reduces the possibility of damage to the copper tube shell due to clamping or excessive local pressure applied externally. After the vacuum sensor 31 detects that the vacuum level inside the copper tube shell is relatively stable and confirms that the vacuum level is within the preset range, the humidity sensor 32 detects humidity changes and outputs data to the outside. At this time, a humidity change curve can be generated through the external receiver. If a short-term increase in humidity is found inside the copper tube shell without a change in vacuum level, then liquid was present inside the copper tube shell before detection and vaporized under vacuum. If the vacuum level still shows a large and continuous change after a certain period of adsorption and abnormal humidity changes are detected, then a leak point is determined to exist inside the copper tube shell. That is, in a normal, leak-free copper tube shell, the vacuum level and humidity are relatively stable. However, if a leak exists, after liquid seeps in, the vacuum level decreases and the humidity increases. Subsequently, the vaporized liquid is pumped away, the vacuum level recovers and decreases again, and the humidity increases. This can also optimize the accuracy of detection and reduce the possibility of false detection.

[0057] 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 quality inspection device for stamping copper tubes for sensor housings, characterized in that: The detection module includes a detection container (1), a vacuum adsorption component (2), and a detection component (3). The test container (1) is used to hold the test liquid and the outer shell of the copper tube to be tested; Vacuum adsorption component (2) is used to seal the opening of the copper tube shell and to evacuate the inside of the copper tube shell. The detection component (3) includes a vacuum sensor (31) installed on the sealed copper tube shell of the vacuum adsorption component (2) and a humidity detection sensor (32) for detecting the humidity inside the copper tube shell.

2. The sensor housing copper tube stamping quality inspection equipment according to claim 1, characterized in that: The testing container (1) is covered with a testing cover plate (11), and the testing cover plate (11) has a testing hole (111) for fitting and fixing the copper tube shell.

3. The sensor housing copper tube stamping quality inspection equipment according to claim 2, characterized in that: The detection hole (111) is fixed with a fixed spring tube (112) extending toward the inside of the detection container (1). The fixed spring tube (112) is made of elastic material and the diameter of the inner wall of the fixed spring tube (112) gradually decreases from the outside to the inside.

4. The sensor housing copper tube stamping quality inspection equipment according to claim 1, characterized in that: The detection module also includes a detection bracket (4), the vacuum adsorption component (2) is vertically slidably disposed on the detection bracket (4), and the detection container (1) is horizontally slidably disposed on the detection bracket (4).

5. The sensor housing copper tube stamping quality inspection equipment according to claim 4, characterized in that: The detection bracket (4) is provided with a detection drive (21) for driving the vacuum adsorption component (2) to slide vertically and a container drive (12) for driving the detection container (1) to slide horizontally.

6. The sensor housing copper tube stamping quality inspection equipment according to claim 5, characterized in that: The vacuum adsorption component (2) is provided with at least one detection component (3), and the detection module includes several vacuum adsorption components (2). The detection bracket (4) is vertically slidably provided with a detection support (22). The vacuum adsorption component (2) is provided on the detection support (22). The detection drive component (21) drives the vacuum adsorption component (2) to move vertically by driving the detection support (22).

7. A sensor housing copper tube stamping quality inspection device according to any one of claims 1-6, characterized in that: The detection module is provided in several groups, and also includes a transfer module for batch placing or removing the copper tube shells to be tested from the detection container (1).

8. The sensor housing copper tube stamping quality inspection equipment according to claim 7, characterized in that: Several of the detection modules are arranged in a straight line and the detection container (1) moves out on the same side relative to the detection bracket (4). The transfer module includes a fixing component (5) for batch adsorption or clamping of copper tube shells and a moving component (6) for controlling the fixing component (5) to move the copper tube shells between the target area and the detection container (1).

9. The sensor housing copper tube stamping quality inspection equipment according to claim 8, characterized in that: The fixing component (5) includes a fixing support (51) and several fixing parts (52) disposed on the fixing support (51) and temporarily fixing the copper tube shell by vacuum adsorption or clamping.

10. The sensor housing copper tube stamping quality inspection equipment according to claim 7, characterized in that: It also includes at least a drying assembly (7) for drying the copper tube shell before testing, the drying assembly (7) including an air blower (71) for outputting compressed gas and a drying control (72) for controlling the air blower (71) to extend into or near the opening of the copper tube shell.

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