A pressure-resistant detection device for an aerosol can

Abstract

The present application belongs to the technical field of pressure resistance detection of aerosol cans, and particularly relates to a pressure resistance detection device for aerosol cans, comprising a detection cabinet, a clamping chuck arranged in the detection cabinet, a driving frame, a laser distance measuring module and a supporting disc. The detection cabinet forms a detection chamber, the clamping chuck is arranged at the top of the detection chamber and is used for sealing and clamping the mouth of the aerosol can, and the clamping chuck is provided with a pressurizing channel for injecting pressurizing medium into the aerosol can. The driving frame is arranged at the top of the detection chamber, and the laser distance measuring module is arranged on the driving frame. The present application automatically completes all detection steps such as initial critical positioning, circumferential rotation monitoring during the pressurizing process and spiral overall scanning after pressure maintaining by the laser distance measuring module, and the whole process does not need manual intervention, so that the complete automation of the detection process is realized, subjective errors caused by manual operation are eliminated, the single detection period is greatly shortened, and the detection efficiency is significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of pressure resistance testing technology for aerosol cans, and particularly relates to a pressure resistance testing device for aerosol cans. Background Technology

[0002] Currently, the pressure resistance performance testing of aerosol cans typically employs a continuous deformation test and burst test: first, gas is injected into the can to a predetermined pressure and held, and the deformation of the can is observed; then, pressure is continued until the can ruptures, in order to determine its burst pressure limit. This testing method is of great significance for assessing the safety of aerosol cans during transportation and use.

[0003] However, existing testing technologies have the following shortcomings: First, during the deformation testing stage, for aerosol cans with small deformation, staff must remove them and carefully observe them with the naked eye or use measuring tools to make a judgment, which is extremely inconvenient. Second, the existing testing process can only obtain the final result of the deformation after the pressure holding period, and cannot accurately record the pressure value when deformation begins or the specific location where the initial deformation occurs.

[0004] The aforementioned defects result in incomplete test data. This is especially true for explosion-proof aerosol cans, which have high safety requirements. Due to the lack of key data such as deformation initiation pressure and initiation position, staff cannot make targeted improvements to the can structure and materials, resulting in significant limitations in testing. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an aerosol can pressure resistance testing device, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: The present invention provides an aerosol can pressure resistance testing device, including a testing cabinet, a clamping head disposed within the testing cabinet, a drive frame, a laser ranging module, and a support plate. The testing cabinet forms a testing chamber, with the clamping head disposed at the top of the testing chamber for sealing and clamping the mouth of the aerosol can. The clamping head is provided with a pressurization channel for injecting a pressurizing medium into the aerosol can. The drive frame is disposed at the top of the testing chamber, the laser ranging module is disposed on the drive frame, and the support plate is disposed at the bottom of the testing chamber for supporting the aerosol can. The drive frame includes a drive unit, a radial sliding unit, a vertical sliding unit, and an angle rotation unit; the drive unit is disposed at the top of the testing chamber, the radial sliding unit is disposed on the drive unit, the vertical sliding unit is disposed on the radial sliding unit, the angle rotation unit is disposed on the vertical sliding unit, and the laser ranging module is disposed on the angle rotation unit. The angle rotation unit is used to control the rotation of the laser ranging module so that its detection end faces the aerosol can; the radial sliding unit is used to drive the laser ranging module to move to a position where its detection path is opposite to the outer peripheral surface of the aerosol can; the driving unit is used to drive the laser ranging module to rotate around the axis of the aerosol can to perform non-contact distance detection on the outer peripheral surface of the aerosol can.

[0007] According to an advantageous embodiment, the drive unit includes a first gear and a second gear rotatably disposed on the top of the detection chamber and meshing with each other, the first gear rotating coaxially with the clamping head.

[0008] According to an advantageous embodiment, a first motor is provided inside the upper end of the testing cabinet, and the output shaft of the first motor is fixedly connected to a first gear.

[0009] According to an advantageous embodiment, the radial sliding unit includes a first slide rail plate fixedly disposed on the lower surface of the first gear, a first screw rotatably disposed on the first slide rail plate, a first slider threaded on the first screw, the first slider slidably disposed on the first slide rail plate, and a vertical sliding unit disposed on the first slider.

[0010] According to an advantageous embodiment, the vertical sliding unit includes a second slide rail plate fixedly mounted on a first slider, a second screw rotatably mounted on the second slide rail plate, a second slider threaded onto the second screw, the second slider slidably mounted on the second slide rail plate, an angle rotation unit mounted on the second slider, and a second motor mounted on both the first and second slide rail plates. The output shafts of the two second motors are respectively fixedly connected to one end of the first screw and the second screw.

[0011] According to an advantageous embodiment, the angle rotation unit includes a connecting plate fixedly connected to the second slider, a rotation groove is provided at the other end of the connecting plate, a rotating shaft is rotatably arranged in the rotation groove, a laser ranging module is arranged on the rotating shaft, a third motor is arranged on the connecting plate, and the output shaft of the third motor is fixedly connected to one end of the rotating shaft.

[0012] According to an advantageous embodiment, the laser ranging module is an infrared rangefinder.

[0013] According to an advantageous embodiment, a lifting stud is fixedly connected to the bottom of the support plate, and a support cylinder is threadedly connected to the lower end of the lifting stud. The lower end of the support cylinder is fixedly connected to the bottom of the testing chamber.

[0014] Compared with the prior art, the aerosol can pressure resistance testing device provided in this embodiment of the invention has the following beneficial effects:

[0015] 1. In this invention, the laser ranging module is positioned at a critical point where its emitted laser beam is not blocked by the aerosol can using a radial sliding unit. During pressurization, the drive unit continuously rotates the laser ranging module circumferentially. Once a certain point on the outer circumferential surface of the aerosol can expands and deforms, the deformed area will instantly block the laser beam, causing a sudden change in the ranging data. By capturing this sudden change signal in the distance data, the control system can immediately determine the moment of deformation and simultaneously record the real-time pressure value at that moment, as well as the current height and circumferential angle of the laser ranging module. This allows for accurate and complete acquisition of the initial pressure, initial height, and initial circumferential angle of the first deformation, providing more reference data for aerosol can improvement.

[0016] 2. In this invention, the control system provides unified and coordinated control of the drive unit, radial sliding unit, vertical sliding unit, and angular rotation unit of the drive frame. After the detection begins, the laser ranging module automatically completes all detection steps in sequence, including initial critical positioning, circumferential rotation monitoring during pressurization, and spiral full-scale scanning after pressure holding. No manual intervention is required throughout the process, achieving complete automation of the detection process. This eliminates subjective errors caused by manual operation, significantly shortens the single detection cycle, and significantly improves detection efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a front view structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the drive frame in this invention;

[0020] Figure 4 for Figure 3Enlarged structural diagram of section A;

[0021] Figure 5 This is an external planar structural diagram of the drive frame in this invention;

[0022] Figure 6 This is a schematic diagram showing the state of the laser ranging module detecting the outer periphery of the aerosol can in this invention.

[0023] The attached figures are labeled as follows: 1. Inspection cabinet; 11. Inspection chamber; 2. Clamping head; 3. Drive frame; 31. Drive unit; 32. Radial sliding unit; 321. First slide rail plate; 322. First screw; 323. First slider; 33. Vertical sliding unit; 331. Second slide rail plate; 332. Second screw; 333. Second slider; 34. Angle rotation unit; 341. Connecting plate; 342. Rotating shaft; 343. Third motor; 4. Laser ranging module; 5. Support plate; 6. Lifting stud; 7. Support cylinder; 100. Aerosol can; 200. Protrusion; 300. Laser beam. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will now be described in further detail.

[0025] Please refer to the following: Figures 1-3 This solution provides a pressure resistance testing device for an aerosol can 100, including a testing cabinet 1, a clamping head 2, a drive frame 3, a laser ranging module 4, a support plate 5, and a control system, all housed within the testing cabinet 1. The testing cabinet 1 forms a testing chamber 11. The clamping head 2 is located at the top of the testing chamber 11 and is used to seal and clamp the mouth of the aerosol can 100. The clamping head 2 has a pressurization channel; one end of the pressurization channel is connected to an external air source, and the other end is connected to the internal space of the aerosol can 100 when the clamping head 2 clamps the aerosol can 100, for injecting a pressurizing medium (such as compressed air or nitrogen) into the aerosol can 100. The drive frame 3 is located at the top of the testing chamber 11, and the laser ranging module 4 is mounted on the drive frame 3. The laser ranging module 4 is an infrared rangefinder. The support plate 5 is located at the bottom of the testing chamber 11 and is used to support the bottom of the aerosol can 100.

[0026] See Figures 1-5The drive frame 3 is used to drive the laser ranging module 4 to move and rotate in three-dimensional space to achieve precise non-contact detection of the outer peripheral surface of the aerosol can 100. The drive frame 3 includes a drive unit 31, a radial sliding unit 32, a vertical sliding unit 33, and an angle rotation unit 34. The drive unit 31 is located on the top of the detection chamber 11, serving as the rotation base for the entire drive frame 3. The radial sliding unit 32 is mounted on the drive unit 31, the vertical sliding unit 33 is mounted on the radial sliding unit 32, the angle rotation unit 34 is mounted on the vertical sliding unit 33, and the laser ranging module 4 is mounted on the angle rotation unit 34.

[0027] Through the above-mentioned hierarchical arrangement, the laser ranging module 4 can rotate around the axis of the aerosol can 100 under the drive of the driving unit 31, move radially along the aerosol can 100 under the drive of the radial sliding unit 32, move axially (vertically) along the aerosol can 100 under the drive of the vertical sliding unit 33, and control the infrared emitted by the laser ranging module 4 to be parallel to or perpendicular to the outer periphery of the aerosol can 100 under the drive of the angle rotation unit 34.

[0028] The aerosol can 100 is fixed by the clamping head 2 and supported at the bottom by the support plate 5.

[0029] Before the test begins, the laser ranging module 4 emits a laser beam 300 vertically downwards, keeping it parallel to the axis of the fixed aerosol can 100. The radial sliding unit 32 controls the laser beam 300 emitted by the laser ranging module 4 to approach but not overlap with the outer periphery of the aerosol can 100. At this time, the laser beam 300 emitted by the laser ranging module 4 is not blocked by the aerosol can 100. The measured data is the distance from the output end of the laser ranging module 4 to the upper surface of the support plate 5.

[0030] During testing, such as Figure 6 As shown, the aerosol can 100 is compressed by gas injected through the clamping head 2. During this process, the laser ranging module 4 rotates continuously along the outer periphery of the aerosol can 100 under the drive of the drive unit 31. When a certain part of the outer periphery of the aerosol can 100 expands, the expanded area protrudes more than the other outer periphery areas of the aerosol can 100 by 200. At this time, the expanded deformation position will block the laser beam 300 emitted by the laser ranging module 4, causing the measurement distance measured by the laser beam 300 to be the distance from its output end to the expanded deformation area. Thus, the position of the first expansion height of the aerosol can 100 during the pressure resistance test is immediately detected, and the specific position of the first expansion of the aerosol can 100 is obtained by combining the rotation angle data of the drive unit 31.

[0031] After injecting a predetermined pressure and holding it for a certain period of time, the laser ranging module 4 is adjusted away from the outer periphery of the aerosol can 100 to a predetermined position via the radial sliding unit 32. Then, the output angle of the laser ranging module 4 is adjusted to be perpendicular to the outer periphery of the aerosol can 100 via the angle rotation unit 34. Finally, the laser ranging module 4 is rotated from top to bottom via the vertical sliding unit 33 in conjunction with the drive unit 31 to detect all areas on the aerosol can 100 that have expanded and deformed, as well as the amount of deformation of each expanded and deformed area (based on the initial distance from the outer periphery of the aerosol can 100 to the aforementioned predetermined position).

[0032] See Figure 5 The drive unit 31 includes a first gear and a second gear rotatably mounted on the top of the detection chamber 11 and meshing with each other. The first gear is coaxially rotatably mounted with the clamping head 2. Preferably, a first motor is fixed to the inner top wall of the detection cabinet 1, and the output shaft of the first motor is coaxially fixedly connected to the first gear. When the first motor starts, its output shaft drives the first gear to rotate, and the first gear drives the second gear to rotate synchronously through meshing transmission. Since the first gear is coaxially mounted with the clamping head 2, the rotation axis 342 of the first gear is the axis of the aerosol can 100, thereby ensuring that the entire drive frame 3 rotates around the central axis of the aerosol can 100, and ensuring that the detection trajectory of the laser ranging module 4 is a circular trajectory concentric with the aerosol can 100.

[0033] See Figure 3 and Figure 5 The radial sliding unit 32 includes a first slide rail plate 321 fixedly disposed on the lower surface of the first gear. A first screw 322 is rotatably disposed on the first slide rail plate 321, and a first slider 323 is threadedly connected to the first screw 322. The first slider 323 is slidably disposed on the first slide rail plate 321. A vertical sliding unit 33 is disposed on the first slider 323. When the first screw 322 rotates, the first slider 323 slides along the length direction of the first slide rail plate 321 (i.e., the radial direction of the aerosol can 100).

[0034] See Figure 3 and Figure 5The vertical sliding unit 33 includes a second slide rail plate 331 fixedly mounted on the first slider 323. A second screw 332 is rotatably mounted on the second slide rail plate 331, and a second slider 333 is threadedly connected to the second screw 332. The second slider 333 is slidably mounted on the second slide rail plate 331. An angle rotation unit 34 is mounted on the second slider 333. When the second screw 332 rotates, the second slider 333 slides along the length direction of the second slide rail plate 331 (i.e., the axial direction or vertical direction of the aerosol can 100). Furthermore, a second motor is mounted on both the first slide rail plate 321 and the second slide rail plate 331. The output shafts of the two second motors are fixedly connected to one end of the first screw 322 and the second screw 332, respectively, for driving the first screw 322 and the second screw 332 to rotate.

[0035] See Figures 3-5 The angle rotation unit 34 includes a connecting plate 341 fixedly connected to the second slider 333. A rotation groove is formed at the end of the connecting plate 341 away from the second slider 333. A rotating shaft 342 is rotatably mounted within the rotation groove via bearings, and the laser ranging module 4 is fixedly mounted on the rotating shaft 342. A third motor 343 is also mounted on the connecting plate 341, and the output shaft of the third motor 343 is fixedly connected to one end of the rotating shaft 342. When the third motor 343 starts, its output shaft drives the rotating shaft 342 to rotate, thereby causing the laser ranging module 4 to rotate around the axis of the rotating shaft 342, thus adjusting the detection angle of the laser ranging module 4.

[0036] like Figure 3 As shown, a lifting stud 6 is fixedly connected to the bottom of the support plate 5, and a support cylinder 7 is threadedly connected to the lower end of the lifting stud 6. The lower end of the support cylinder 7 is fixedly connected to the bottom of the testing chamber 11. In use, the height of the support plate 5 can be adjusted by rotating the lifting stud 6, so that the support plate 5 can accommodate aerosol cans 100 of different heights, ensuring that the aerosol can 100 remains vertical after being clamped by the clamping head 2. Alternatively, the height adjustment of the support plate 5 can also be achieved using an electric push rod or a hydraulic cylinder for automated adjustment.

[0037] In specific work,

[0038] Before starting the test, the aerosol can 100 is first fixed by the clamping head 2, and then the height of the support plate 5 is adjusted to contact the bottom of the aerosol can 100 by rotating the support plate 5.

[0039] Subsequently, the control system controls the angle rotation unit 34 to rotate the laser ranging module 4 around the horizontal axis, so that its laser emitting end faces vertically downward, so that the emission direction of the laser beam 300 is parallel to the vertical direction, that is, parallel to the central axis of the aerosol can 100 that has been clamped and fixed.

[0040] Next, the control system controls the radial sliding unit 32 to move, driving the laser ranging module 4 to move along the radial direction of the aerosol can 100, so as to adjust the position of the laser ranging module 4 on the horizontal plane.

[0041] Specifically, the radial sliding unit 32 drives the laser ranging module 4 to gradually approach the outer peripheral surface of the aerosol can 100 from a position far away from the aerosol can 100, until the laser beam 300 emitted by the laser ranging module 4 just passes by the outer peripheral surface of the aerosol can 100, without being blocked by the outer peripheral surface of the aerosol can 100, and maintaining a very small distance from the outer peripheral surface of the aerosol can 100 in the horizontal direction.

[0042] In this initial position, since the vertically downward laser beam 300 emitted by the laser ranging module 4 is not blocked by the aerosol can 100, the laser beam 300 will directly illuminate the upper surface of the support plate 5. Therefore, the distance data measured by the laser ranging module 4 at this time is the vertical distance between the emitting end of the laser ranging module 4 and the upper surface of the support plate 5. The control system records this initial distance value as a reference distance value, which is used to subsequently determine whether the outer peripheral surface of the aerosol can 100 has expanded and deformed.

[0043] Phase 1:

[0044] After the initial positioning is completed, pressurizing medium is slowly and continuously injected into the aerosol can 100 through the pressurization channel of the clamping head 2, so that the internal pressure of the aerosol can 100 gradually increases.

[0045] During this pressurization process, the control system continuously operates the drive unit 31 (i.e., the first motor), driving the first gear and the second gear to rotate, thereby causing the entire drive frame 3 and the laser ranging module 4 mounted on it to rotate continuously around the central axis of the aerosol can 100. During this process, the laser ranging module 4 maintains its vertically downward orientation, and the horizontal distance between the laser beam 300 and the outer peripheral surface of the aerosol can 100 remains at the initially set minimum distance.

[0046] When the internal pressure of the aerosol can 100 rises to a certain critical value, if a local area on the outer peripheral surface of the aerosol can 100 expands and deforms, this local area will bulge outward by 200 relative to the other outer peripheral areas of the aerosol can 100. When the laser beam 300 of the laser ranging module 4 rotates to the area on the outer peripheral side of the aerosol can 100 that bulges outward by 200, the outermost convex surface of this deformed area will just block the originally vertically downward laser beam 300.

[0047] At this moment, the source of the reflected signal received by the laser ranging module 4 will instantly switch from the upper surface of the support disk 5 to the convex surface of the expansion and deformation area. Therefore, the distance data measured by the laser ranging module 4 will change abruptly, that is, from the original (distance from the transmitter to the upper surface of the support disk 5) to (distance from the transmitter to the surface of the expansion and deformation area).

[0048] The control system receives and monitors the distance data measured by the laser ranging module 4 in real time. Once a sudden decrease in the distance value exceeding a preset threshold is detected, the control system immediately determines that the aerosol can 100 has undergone its first expansion deformation at the current moment and position. At the same time, the control system records the real-time pressure value (obtained by a pressure sensor installed on the pressurization pipeline) corresponding to the moment of this sudden change, as well as the current height position (obtained by a position sensor in the vertical sliding unit 33) and circumferential angle position (obtained by a rotation angle encoder of the first motor in the drive unit 31). This accurately determines the initial pressure value, initial height position, and initial circumferential angle position of the aerosol can 100 during the pressure resistance test when it first undergoes expansion deformation.

[0049] The core advantage of this stage lies in utilizing the critical state where the laser beam 300 is just unobstructed. By using a simple distance value jump signal, the initial moment of deformation can be captured with extreme sensitivity and speed, effectively solving the technical problem in the background technology of "being unable to record the pressure value when deformation begins and the specific location where the initial deformation occurs".

[0050] After the first deformation is detected, pressurized medium is injected into the aerosol can 100 until the predetermined detection pressure value is reached. Then the pressurization channel is closed and the pressure is maintained for a certain duration (e.g., 30 seconds to several minutes) according to the detection standard.

[0051] Phase Two:

[0052] During the pressure holding process, in addition to the initial deformation location, new expansion deformations may occur on the aerosol can 100 at other heights and circumferential locations. To comprehensively detect all deformed areas on the outer peripheral surface of the aerosol can 100 and quantify the deformation amount in each area, this invention provides further detection steps.

[0053] After the pressure holding period ends, the control system first controls the radial sliding unit 32 to move the laser ranging module 4 radially outward, moving it away from the outer peripheral surface of the aerosol can 100 to a predetermined safe distance position. This predetermined position should ensure that the laser beam 300 emitted by the laser ranging module 4 can completely cover the maximum possible deformation contour of the aerosol can 100 during subsequent scanning, without being blocked by any deformed protrusions 200. The distance to the upper surface of the support plate 5, or the distance to the outer peripheral surface of the aerosol can 100 (if the laser beam is not blocked), measured by the laser ranging module 4 at this predetermined position, is used as the reference value for subsequent deformation calculation.

[0054] Subsequently, the control system controls the angle rotation unit 34 to rotate the laser ranging module 4 around the horizontal axis, so that its laser emitting end is adjusted from a vertical downward posture to a horizontal posture, that is, the emission direction of the laser beam 300 is adjusted to be perpendicular to the central axis of the aerosol can 100, that is, perpendicular to the outer peripheral surface of the aerosol can 100.

[0055] Next, the control system simultaneously activates the drive unit 31 and the vertical sliding unit 33, causing the laser ranging module 4 to continuously rotate around the central axis of the aerosol can 100 while moving slowly and uniformly from top to bottom (or from bottom to top) along the vertical direction of the aerosol can 100, thus forming a spiral scanning trajectory. During this process, the laser ranging module 4 continuously emits a laser beam 300 and receives reflected signals, measuring in real time the distance from its emitting end to the outer peripheral surface of the aerosol can 100 (or to the upper surface of the support plate 5, when the laser beam 300 is outside the height range of the aerosol can 100).

[0056] Since the laser ranging module 4 has been moved to the predetermined safe distance position beforehand, which is far from the initial contour of the outer peripheral surface of the aerosol can 100, the measured distance value is large and basically remains unchanged when the laser beam 300 scans the undeformed area; when the laser beam 300 scans the area that has expanded and deformed, the measured distance value will decrease accordingly because the area protrudes outward by 200, and the magnitude of the decrease is positively correlated with the amount of deformation in the area.

[0057] The control system compares each distance value measured by the laser ranging module 4 during the scanning process with the previously recorded reference value to calculate the deformation amount (i.e., the protrusion height of 200) at each detected point. Simultaneously, by recording the rotation angle corresponding to the driving unit 31 and the vertical height corresponding to the vertical sliding unit 33 at the current moment, the specific position (height coordinates + circumferential angle coordinates) of each deformation point on the outer peripheral surface of the aerosol can 100 can be accurately determined.

[0058] Finally, the control system integrates and processes all the detection data to generate a complete deformation distribution map of the outer peripheral surface of the aerosol can 100. This map can intuitively display key information such as all areas of deformation that occurred during the pressure resistance test, the magnitude of deformation in each area, the location of the first deformation, and the corresponding initial pressure.

[0059] In summary, this invention, by incorporating a laser ranging module 4 capable of multi-degree-of-freedom movement and employing a combined first-stage and second-stage detection mode, achieves fully automated, high-precision, and omnidirectional detection of the deformation of the outer peripheral surface of the aerosol can 100 during pressure resistance testing. This invention not only accurately records the final deformation result but also precisely locates the starting position of the initial deformation and records the initial pressure, providing complete and accurate data support for the structural optimization and material improvement of the aerosol can 100, significantly enhancing the technical level of pressure resistance performance testing for the aerosol can 100.

[0060] It should be noted that although the drive frame 3 structure of the present invention introduces more degrees of freedom of motion compared with traditional detection devices, the drive unit 31, radial sliding unit 32, vertical sliding unit 33 and angle rotation unit 34 are all mature mechanical transmission structures known in the art. Each component can be obtained by commercially available standard parts or conventional machining methods. The overall device has good manufacturability and assemblability, and there are no technical defects that violate natural laws or cannot be manufactured and used in industry.

[0061] Furthermore, this invention can not only record the final deformation of the aerosol can 100 during the pressure resistance test, but also simultaneously acquire multi-dimensional data such as the deformation initiation pressure, deformation initiation height position, deformation initiation circumferential angle position, and deformation distribution in each deformation area. This data is of significant guiding importance for manufacturers of explosion-proof aerosol cans 100 (such as cartridge stove canisters) to analyze weak points in the can structure, optimize material formulations, and improve manufacturing processes, effectively enhancing the safety performance of the aerosol can 100 product.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A pressure resistance testing device for aerosol cans, characterized in that: Includes a testing cabinet, a clamping head installed inside the testing cabinet, a drive frame, a laser ranging module, and a support plate; The testing cabinet has a testing chamber, and a clamping head is set on the top of the testing chamber to seal and clamp the mouth of the aerosol can. The clamping head is provided with a pressurization channel for injecting pressurizing medium into the aerosol can. The drive frame is located at the top of the testing chamber, the laser ranging module is located on the drive frame, and the support plate is located at the bottom of the testing chamber to support the aerosol can. The drive frame includes a drive unit, a radial sliding unit, a vertical sliding unit, and an angle rotation unit; the drive unit is located on the top of the detection chamber, the radial sliding unit is located on the drive unit, the vertical sliding unit is located on the radial sliding unit, the angle rotation unit is located on the vertical sliding unit, and the laser ranging module is located on the angle rotation unit. The angle rotation unit is used to control the rotation of the laser ranging module so that its detection end faces the aerosol can; the radial sliding unit is used to drive the laser ranging module to move to a position where its detection path is opposite to the outer peripheral surface of the aerosol can; the driving unit is used to drive the laser ranging module to rotate around the axis of the aerosol can to perform non-contact distance detection on the outer peripheral surface of the aerosol can.

2. The pressure resistance testing device for aerosol cans according to claim 1, characterized in that, The drive unit includes a first gear and a second gear that are rotatably mounted on the top of the detection chamber and mesh with each other. The first gear rotates coaxially with the clamping head.

3. The pressure resistance testing device for an aerosol can according to claim 2, characterized in that, The upper part of the testing cabinet is equipped with a first motor, and the output shaft of the first motor is fixedly connected to the first gear.

4. The pressure resistance testing device for an aerosol can according to claim 2, characterized in that, The radial sliding unit includes a first slide rail plate fixedly disposed on the lower surface of the first gear, a first screw rotatably disposed on the first slide rail plate, a first slider threaded on the first screw, the first slider slidably disposed on the first slide rail plate, and a vertical sliding unit disposed on the first slider.

5. The pressure resistance testing device for an aerosol can according to claim 4, characterized in that, The vertical sliding unit includes a second slide rail plate fixedly mounted on the first slider, a second screw rotatably mounted on the second slide rail plate, a second slider threaded onto the second screw, the second slider slidably mounted on the second slide rail plate, an angle rotation unit mounted on the second slider, and a second motor mounted on both the first and second slide rail plates. The output shafts of the two second motors are fixedly connected to one end of the first screw and the second screw, respectively.

6. The pressure resistance testing device for an aerosol can according to claim 5, characterized in that, The angle rotation unit includes a connecting plate fixedly connected to the second slider. A rotation groove is provided at the other end of the connecting plate. A rotating shaft is rotatably arranged in the rotation groove. The laser ranging module is arranged on the rotating shaft. A third motor is arranged on the connecting plate. The output shaft of the third motor is fixedly connected to one end of the rotating shaft.

7. The pressure resistance testing device for aerosol cans according to claim 1, characterized in that, The laser ranging module is an infrared rangefinder.

8. The pressure resistance testing device for aerosol cans according to claim 1, characterized in that, The bottom of the support plate is fixedly connected to a lifting stud, and the lower end of the lifting stud is threadedly connected to a support cylinder, the lower end of which is fixedly connected to the bottom of the testing chamber.

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