A strength detection device for automobile instrument panel crossbeam bracket

Abstract

The present invention provides a strength detection device for a crossbeam support of an automobile dashboard, comprising: an application component and a drive mechanism, the application component including an application shell, the application shell being used to contain a coupling agent and apply the coupling agent to the crossbeam support, the application shell being provided with a first chamber, a second chamber, and a third chamber with adjustable volumes, the volume of the chamber being positively correlated with the amount of coupling agent discharged, the first chamber, the second chamber, and the third chamber corresponding to the upstream, midstream, and downstream areas of the welding area, respectively. When the application shell is tilted in the area where the welding machine is fitted, the drive mechanism reduces the volumes of the second chamber, the first chamber, and the third chamber, respectively, according to the tilt angle of the welding area. Thus, by setting the interior of the application shell as a chamber with adjustable volume, the coupling agent in each area of ​​the welding area can be evenly distributed, thereby ensuring the stable transmission of the ultrasonic detection signal.

Description

Technical Field

[0001] The invention relates to the field of automobile parts detection, in particular to a strength detection device for an automobile instrument panel crossbeam bracket. Background Art

[0002] In the automotive industry, the strength of the weld area of ​​a dashboard crossbeam is directly related to the safety and reliability of the vehicle. Currently, the industry generally uses non-destructive testing techniques such as ultrasonic testing to assess the strength of the crossbeam support weld area.

[0003] When an ultrasonic testing device performs strength testing on a crossbeam bracket on a car dashboard, it first cleans the surface of the crossbeam bracket to be tested and evenly applies coupling agent to eliminate air gaps and ensure effective transmission of sound waves. The ultrasonic probe is placed against the coated area, and the instrument parameters are adjusted so that the probe transmits ultrasonic waves that penetrate the workpiece. The receiving end captures the reflected echo and, by analyzing the echo's amplitude, propagation time, and waveform changes, determines whether there are defects such as cracks or pores inside the bracket, thereby evaluating its strength performance.

[0004] However, in the existing technology, the welding end of the sub-beam needs to be pre-expanded. The concave-convex structure and tilt angle formed by the expansion change the surface flatness, causing the applied coupling agent to flow and gather downwards under the action of gravity. This fluidity can cause the coupling agent to be unevenly distributed on the surface of the welding position. In some areas, the coupling agent is too thin to effectively eliminate air gaps, hindering the transmission of sound waves. In other areas, bubbles or liquid layers are formed due to the accumulation of coupling agent, interfering with the normal reflection and reception of ultrasound. Uneven application of coupling agent can directly affect the accuracy of the test results, and may cause defects such as internal cracks and pores to be missed or misjudged, resulting in inaccurate assessment of the strength performance of the crossbeam support, posing a safety hazard, while also increasing the cost of repeated testing and reducing production efficiency.

[0005] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0006] Based on this, it is necessary to provide a strength detection device for an automobile dashboard crossbeam bracket to address the problem of uneven distribution of coupling agent in the current strength detection device for an automobile dashboard crossbeam bracket, which leads to unstable ultrasonic detection signals.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A strength detection device for a crossbeam support of an automobile instrument panel, comprising:

[0009] An ultrasonic detection component is used to perform strength detection on the beam support.

[0010] The smearing assembly includes a smearing shell, which is used to contain the coupling agent and fit with the surface of the beam bracket, and the coupling agent is applied to the welding area of ​​the beam bracket. The smearing shell is provided with a plurality of chambers with adjustable volumes, and the chambers include at least a first chamber, a second chamber and a third chamber. The volumes of the first chamber, the second chamber and the third chamber are positively correlated with the liquid output of the coupling agent. The coupling agent in the first chamber is applied to the upstream area of ​​the welding area, the coupling agent in the second chamber is applied to the midstream area of ​​the welding area, and the coupling agent in the third chamber is applied to the downstream area of ​​the welding area.

[0011] The driving mechanism is configured to reduce the volumes of the second chamber, the first chamber and the third chamber in sequence according to the inclination angle of the welding area when the coating shell is tilted in the welding area.

[0012] In one embodiment, a first partition plate and a second partition plate are provided in the application shell, the first partition plate is located between the first chamber and the second chamber, and the second partition plate is located between the second chamber and the third chamber, and the driving mechanism adjusts the positional relationship between the first partition plate and the second partition plate to achieve volume adjustment of the first chamber, the second chamber and the third chamber.

[0013] In one embodiment, the application assembly includes a delivery tube for transporting the coupling agent into the application housing.

[0014] In one embodiment, the application shell is provided with a connecting cavity and a distribution hole, the connecting cavity connects the delivery tube and the first chamber, the second chamber and the third chamber, and the coupling agent enters the first chamber, the second chamber and the third chamber through the plurality of the distribution holes.

[0015] In one embodiment, the driving mechanism includes a transmission assembly, the transmission assembly includes a rotating shaft, the rotating shaft passes through the first partition plate and the second partition plate, the rotating shaft and the first partition plate are rotationally connected by a first thread, the rotating shaft and the second partition plate are rotationally connected by a second thread, when the rotating shaft rotates around its own axis, the first thread causes the first partition plate to move linearly, and the second thread causes the second partition plate to move linearly.

[0016] The pitch of the first thread is smaller than the pitch of the second thread so that the first partition plate and the second partition plate move synchronously and have different adjustment displacements.

[0017] In one embodiment, the driving mechanism comprises a gear set, which is used to convert the deflection movement of the application housing into the rotational movement of the rotating shaft.

[0018] In one embodiment, a cleaning assembly is included, wherein the cleaning assembly is used to remove impurities on the surface of the welding area.

[0019] In one embodiment, the cleaning assembly includes a rotatable sticky roller, which contacts the surface of the welding area to absorb surface impurities of the welding area.

[0020] In one embodiment, the driving mechanism includes an arc frame, the ultrasonic detection component, the smearing component and the cleaning component are fixedly connected to the arc frame, and the driving mechanism drives the arc frame so that the ultrasonic detection component, the smearing component and the cleaning component fit the surface of the beam support.

[0021] In one embodiment, the ultrasonic detection component, the coating component and the cleaning component are connected to the arc frame through an elastic member, and the elastic force of the elastic member always makes the ultrasonic detection component, the coating component and the cleaning component located at an initial position or have a tendency to approach the initial position.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a strength testing device for a crossbeam support of an automobile instrument panel, comprising an applicator assembly and a drive mechanism. The applicator assembly includes an applicator housing for containing a coupling agent and applying the coupling agent to the weld area of ​​the crossbeam support. The applicator housing is internally provided with a first, second, and third chambers, each of which has an adjustable volume. The chamber volume is positively correlated with the amount of coupling agent discharged. The first, second, and third chambers correspond, respectively, to the upstream, midstream, and downstream regions of the weld area. When the applicator housing tilts relative to the welder region, the drive mechanism sequentially reduces the volumes of the second, first, and third chambers according to the tilt angle of the weld area, thereby achieving uniform distribution of the coupling agent across the weld area and ensuring stable transmission of ultrasonic detection signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a strength detection device for a crossbeam support of an automobile instrument panel provided by one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of a strength testing device for a crossbeam support of an automobile instrument panel;

[0026] Figure 3 for Figure 2A side view of a strength testing device for a crossbeam support of an automobile instrument panel;

[0027] Figure 4 for Figure 3 An exploded view of the strength testing device for the crossbeam bracket of the vehicle dashboard;

[0028] Figure 5 for Figure 4 A side view of the coating assembly of a strength testing device for a crossbeam support of an automobile instrument panel;

[0029] Figure 6 for Figure 5 AA cross-sectional view of the coating assembly of the strength testing device for the crossbeam support of the automobile instrument panel;

[0030] Figure 7 A schematic structural diagram of a coating assembly of a strength detection device for a crossbeam support of an automobile instrument panel provided by one embodiment of the present invention;

[0031] Figure 8 for Figure 7 A partial enlarged view of the coating component B of the strength testing device for the crossbeam bracket of the vehicle dashboard;

[0032] Figure 9 This is an exploded view of the coating assembly of the strength detection device for the automobile dashboard crossbeam bracket provided by one embodiment of the present invention.

[0033] in:

[0034] 100, beam support; 110, welding area;

[0035] 200. Ultrasonic detection components;

[0036] 300, smear assembly; 310, smear housing; 311, first chamber; 312, second chamber; 313, third chamber; 314, first partition plate; 315, second partition plate; 320, delivery tube; 330, connecting chamber; 340, dispensing hole;

[0037] 400, driving mechanism; 410, transmission assembly; 411, rotating shaft; 420, gear set; 421, fixed gear; 422, first self-rotating gear; 423, second self-rotating gear; 424, first gear; 425, first sliding rod; 426, second sliding rod; 427, fixed rod; 428, transmission gear; 429, driving gear; 430, arc frame; 440, elastic member;

[0038] 500, cleaning component; 510, sticky roller. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0041] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] Refer to the following Figures 1-9 The present invention describes a strength detection device for a crossbeam support of an automobile instrument panel provided by an embodiment of the present invention.

[0043] like Figures 1-6 As shown, the strength detection device for the automobile dashboard crossbeam bracket provided by the embodiment of the present invention is particularly suitable for strength detection of the automobile dashboard crossbeam bracket 100. Of course, it can also be applied to the flaw detection operation of other parts with similar welding structures or special surface morphologies.

[0044] Specifically, it includes a detection platform, an ultrasonic detection component 200 , a three-jaw chuck and a driving mechanism 400 .

[0045] The testing platform serves as a supporting base for the overall strength testing device and is used to fix the instrument panel crossbeam bracket 100 , providing a stable installation reference for subsequent testing operations.

[0046] The ultrasonic detection component 200 detects internal defects (such as cracks and pores) in the welding area 110 by transmitting and receiving ultrasonic signals to determine whether the welding strength meets the standards.

[0047] The three-jaw chuck is used to clamp the main beam or the secondary beam of the instrument panel crossbeam bracket 100, and fix the tested component by mechanical clamping to ensure the stable position of the workpiece during the detection process and avoid affecting the detection accuracy due to shaking.

[0048] Drive mechanism 400 controls the axial movement of ultrasonic testing assembly 200, causing it to move along its axis during testing, achieving comprehensive scanning coverage of weld area 110. Drive mechanism 400 drives the instrument panel cross member support 100 in rotation and axial movement, enabling components such as ultrasonic testing assembly 200 to contact weld area 110 at multiple angles, ensuring comprehensive testing coverage.

[0049] In the prior art, ultrasonic testing and other methods are required to test the strength of the automotive instrument panel crossbeam support 100. During ultrasonic testing, coupling agent is applied to the weld area 110 to ensure good transmission of the test signal. However, due to the special structure of the sub-beam weld end after hole expansion, the coupling agent, as a viscous fluid, is affected by the gravity component when flowing on an inclined surface, causing it to migrate along the slope. This results in uneven distribution of coupling agent on the weld surface. The coupling agent in the upper area is easily lost due to gravity, resulting in insufficient coupling agent, while the coupling agent in the lower area accumulates excessively, resulting in an uneven distribution with a thinner top and thicker bottom. This uneven distribution of coupling agent can lead to unstable ultrasonic testing signals, which in turn affects the accuracy of test results. This can lead to missed detections or misjudgments, making it impossible to accurately assess the strength of the weld area 110 of the automotive instrument panel crossbeam support 100.

[0050] Based on this, the strength detection device for the automobile dashboard crossbeam support provided in the embodiment of the present invention includes a coating component 300 , which includes a coating shell 310 , which is used to contain the coupling agent and evenly coat the coupling agent on the welding area 110 .

[0051] Specifically, when the coating shell 310 applies coupling agent to the welding area 110, the bottom wall of the coating shell 310 adheres to the surface of the welding area 110, so that the welding area 110 contacted by the coating shell 310 is divided into an upstream area, a midstream area and a downstream area.

[0052] The coating housing 310 is provided with a plurality of chambers capable of adjusting the volume, including a first chamber 311, a second chamber 312, and a third chamber 313. The coupling agent in the first chamber 311 is applied to the upstream area of ​​the welding area 110, the coupling agent in the second chamber 312 is applied to the midstream area of ​​the welding area 110, and the coupling agent in the third chamber 313 is applied to the downstream area of ​​the welding area 110. Figure 6 As shown in FIG, along the extension direction of the welding area 110, the coating shell 310 includes a first chamber 311, a second chamber 312 and a third chamber 313 in sequence.

[0053] The bottom wall of the coating housing 310 is defined by a first outlet, a second outlet, and a third outlet, extending along the welding area 110. The second outlet is located midway between the first and third outlets. The outlets communicate with the corresponding chambers and discharge the coupling agent from the chambers into the welding area 110.

[0054] The amount of coupling agent discharged is positively correlated with the volume of the chamber. The larger the volume of the chamber, the larger the corresponding amount of coupling agent discharged. According to different conditions of the welding area 110, the supply amount of coupling agent is reasonably allocated to improve the uniformity of coupling agent distribution.

[0055] The drive mechanism 400 is connected to the first chamber 311, the second chamber 312 and the third chamber 313, and is used to reduce the volumes of the second chamber 312, the first chamber 311 and the third chamber 313 in sequence according to the inclination angle of the welding area 110, thereby changing the amount of coupling agent discharged from each outlet and achieving uniform distribution of the coupling agent in the welding area 110.

[0056] The coupling agent flows from the upper flow area to the middle flow area in the first stroke, and the coupling agent flows from the middle flow area to the lower flow area in the second stroke.

[0057] When the applicator housing 310 is horizontal, the amount of coupling agent in the first, second, and third chambers 311, 312, and 313 is uniform, for example, 10 units of coupling agent in each chamber. After the applicator housing 310 is in contact with the surface of the welding area 110, the drive mechanism 400 begins adjusting the volumes of the first, second, and third chambers 311, 312, and 313, ensuring that the amount of coupling agent in each region of the welding area 110 is 10 units.

[0058] Because third chamber 313 is located at the bottom, coupling agent from the upper end flows into the downstream area, increasing the amount of coupling agent in the downstream area. This minimizes the volume of third chamber 313, reducing its volume by, for example, 4 units. Because the volume of applicator housing 310 remains unchanged, the reduction in volume of third chamber 313 is equal to the sum of the increases in volume of second chamber 312 and first chamber 311.

[0059] The following discusses the distribution of coupling agent under different volume adjustment methods:

[0060] Case 1: When the volume of the first chamber 311 increases by 3 units, the amount of coupling agent liquid in the upstream region increases by 3 units accordingly. When the volume of the second chamber 312 increases by 1 unit, the amount of coupling agent liquid in the midstream region increases by 1 unit.

[0061] The coupling agent in each chamber all flows to the welding area 110 , with the coupling agent liquid volume in the upstream area being 13 units, the coupling agent liquid volume in the midstream area being 11 units, and the coupling agent liquid volume in the downstream area being 6 units.

[0062] Because flow rate is proportional to flow velocity, the amount of coupling agent liquid in the upstream region is greater than that in the midstream region. Therefore, within the same timeframe, the coupling agent flow velocity in the first pass is greater than that in the second pass, and consequently, the coupling agent flow rate in the first pass is greater than that in the second pass. The increase in coupling agent in the midstream region is greater than the decrease, so the amount of coupling agent liquid in the midstream region is necessarily greater than the average.

[0063] Obviously, when the volume of the adjusted first chamber 311 is larger than the volume of the second chamber 312 , the coupling agent cannot be evenly distributed in the welding area 110 .

[0064] Case 2: When the volume of the first chamber 311 increases by 1 unit, the amount of coupling agent liquid in the upstream area increases by 1 unit accordingly. When the volume of the second chamber 312 increases by 3 units, the amount of coupling agent liquid in the midstream area increases by 3 units.

[0065] The coupling agent in each chamber all flows to the welding area 110 , with the coupling agent liquid volume in the upstream area being 11 units, the coupling agent liquid volume in the midstream area being 13 units, and the coupling agent liquid volume in the downstream area being 6 units.

[0066] Similarly, because flow rate is proportional to flow velocity, the amount of coupling agent liquid in the upstream region is less than that in the midstream region. Therefore, within the same timeframe, the coupling agent flow rate in the first stroke is less than that in the second stroke, and the coupling agent flow rate in the first stroke is less than that in the second stroke, causing more coupling agent in the midstream region to flow into the downstream region. In this scenario, the amount of coupling agent in both the upstream and midstream regions decreases, while the amount in the downstream region increases. Clearly, when the volume of the first chamber 311 is smaller than that of the second chamber 312, the coupling agent is evenly distributed, or tends to be evenly distributed, in the welding region 110.

[0067] The driving mechanism 400 adjusts the volumes of the first chamber 311, the second chamber 312, and the third chamber 313 according to the inclination angle of the welding area 110, so that the volumes of the second chamber 312, the first chamber 311, and the third chamber 313 decrease in sequence, thereby making the coupling agent in each area of ​​the welding area 110 evenly distributed.

[0068] Therefore, by setting the interior of the coating shell 310 as a chamber with an adjustable volume, the coupling agent in the welding area 110 can be evenly distributed, ensuring the stable transmission of the ultrasonic detection signal and reducing the detection error caused by uneven distribution of the coupling agent.

[0069] It is understood that when the applicator housing 310 is divided into multiple chambers, in addition to the chambers at the ends of the applicator housing 310, such as the first chamber 311 and the third chamber 313, the welding area 110 corresponding to the intermediate chambers can also be considered to apply coupling agent to the mid-flow area of ​​the welding area 110. During the coupling agent flow process, the mid-flow area serves the dual purpose of both upstream fluid inflow and downstream fluid outflow. In this case, the volume adjustment of each mid-flow area must adhere to the principle of symmetry. That is, the volume change of adjacent mid-flow area chambers must be consistent to avoid uneven accumulation of coupling agent in the welding area 110 due to local flow imbalance.

[0070] Specifically, when the coating shell 310 is tilted along with the welding area 110, the coupling agent in the uppermost chamber can only flow to the downstream area because it is located at the highest position, and there is no upstream fluid confluence. Therefore, the coupling agent liquid amount in the uppermost chamber will only decrease.

[0071] Since the bottom chamber is located at the lowest position, it collects the coupling agent flowing down from the upstream chamber, so the amount of coupling agent liquid in the bottom chamber will only increase.

[0072] The mid-flow chamber in the middle position has a bidirectional flow of fluid flowing in and out of the corresponding welding area 110, with fluid flowing in from upstream and out of the chamber downstream. To ensure that the amount of coupling fluid flowing into the mid-flow region is equal to the amount flowing out, the volume of the mid-flow chamber must be adjusted in the same direction and with equal amplitude via the drive mechanism 400.

[0073] It is understandable that the distance between the coating assembly 300 and the ultrasonic detection assembly 200 is relatively short in the circumferential direction of the beam support 100. The influence of the couplant flow in the circumferential direction is small and can be ignored.

[0074] In one embodiment, Figures 1-6 As shown, in order to better adjust the volume of the first chamber 311, the second chamber 312 and the third chamber 313, a first partition plate 314 and a second partition plate 315 are provided in the application shell 310, and the driving mechanism 400 drives the position of the first partition plate 314 and the second partition plate 315 to achieve the volume adjustment of the first chamber 311, the second chamber 312 and the third chamber 313.

[0075] Specifically, the first partition plate 314 is located between the first chamber 311 and the second chamber 312 , and the second partition plate 315 is located between the second chamber 312 and the third chamber 313 .

[0076] The driving mechanism 400 can adjust the positional relationship between the first partition plate 314 and the second partition plate 315 according to the inclination angle of the welding area 110 , thereby adjusting the volumes of the first chamber 311 , the second chamber 312 and the third chamber 313 .

[0077] When the application housing 310 is in a horizontal position, the first chamber 311 , the second chamber 312 and the third chamber 313 have the same volume and store the same unit of coupling agent.

[0078] The applicator housing 310 is attached to the surface of the welding area 110. The driving mechanism 400 adjusts the volumes of the first, second, and third chambers 311, 312, and 313 according to the tilt angle of the welding area 110. The first and second partition plates 314, 315 are then driven to move to corresponding positions, changing the volumes of the first, second, and third chambers 311, 312, and 313.

[0079] After the volume of the chamber is adjusted, the coupling agent flows out through the various outlets and flows in the welding area 110 under the action of gravity.

[0080] Thus, the positions of the first partition plate 314 and the second partition plate 315 are controlled by the driving mechanism 400 to adjust the volumes of the first chamber 311 , the second chamber 312 and the third chamber 313 , so that the coupling agent is more evenly distributed in the welding area 110 .

[0081] In one embodiment, Figure 2-Figure 9 As shown, the application assembly 300 includes a delivery tube 320 for transporting coupling agent, and the application housing 310 is provided with a connecting cavity 330 and a plurality of distribution holes 340 . The connecting cavity 330 connects the delivery tube 320 and the chamber, and the coupling agent enters the chamber through the plurality of distribution holes 340 .

[0082] Specifically, the distribution hole 340 is located between the connecting cavity 330 and the first cavity 311 , the second cavity 312 and the third cavity 313 , and is a passage for the coupling agent to enter the cavity from the connecting cavity 330 .

[0083] The coupling agent enters the connecting chamber 330 through the delivery tube 320 and then enters the chamber through the distribution holes 340. The drive mechanism 400 drives the first and second partition plates 314 and 315 to adjust the number of distribution holes 340 in the first, second, and third chambers 311, 312, and 313, thereby adjusting the amount of coupling agent liquid in the chambers of different volumes.

[0084] The drive mechanism 400 moves the first and second partition plates 314, 315 to the desired positions based on the inclination angle of the welding area 110, adjusting the number of distribution holes 340 corresponding to the first, second, and third chambers 311, 312, and 313. For example, if the second chamber 312 requires more coupling agent, the drive mechanism 400 will increase the number of distribution holes 340 corresponding to the second chamber 312. If the third chamber 313 requires less coupling agent, the drive mechanism 400 will decrease the number of distribution holes 340 corresponding to the third chamber 313.

[0085] After adjusting the number of distribution holes 340, the coupling agent flows through the delivery tube 320 into the connecting cavity 330 of the applicator housing 310. The connecting cavity 330 temporarily stores the coupling agent, allowing it to flow evenly through the multiple distribution holes 340. The coupling agent then flows from the connecting cavity 330 through the distribution holes 340 and into each chamber. Each chamber evenly applies the coupling agent to the welding area 110 through the discharge port at the bottom, based on the amount of liquid stored in the chamber.

[0086] Therefore, by providing the connecting cavity 330 and the distribution holes 340 , the driving mechanism 400 adjusts the number of distribution holes 340 in each chamber, and the liquid amount of the coupling agent is distributed according to the number of distribution holes 340 , thereby achieving precise control of the coupling agent supply amount in each chamber.

[0087] In one embodiment, Figure 2-Figure 9 As shown, the driving mechanism 400 includes a transmission assembly 410 , which is used to synchronously transmit power to the first partition plate 314 and the second partition plate 315 .

[0088] Specifically, the transmission assembly 410 includes a rotating shaft 411 that passes through the first partition plate 314 and the second partition plate 315. The rotating shaft 411 and the first partition plate 314 are connected by a first thread, and the rotating shaft 411 and the second partition plate 315 are connected by a second thread. The rotating shaft 411 converts its own rotational motion into linear motion of the first partition plate 314 and the second partition plate 315.

[0089] The pitch of the first thread is smaller than the pitch of the second thread so that the first partition plate 314 and the second partition plate 315 move synchronously and have different adjustment displacements, thereby achieving the volume relationship of the first chamber 311, the second chamber 312 and the third chamber 313.

[0090] The driving mechanism 400 provides power to the transmission assembly 410 according to the tilt angle of the welding area 110 and the required volume adjustment of the first chamber 311 , the second chamber 312 and the third chamber 313 , so that the rotating shaft 411 rotates a corresponding angle.

[0091] As the rotating shaft 411 rotates, the first and second threads cause the first and second partition plates 314, 315 to move linearly along the rotating shaft 411. Because the pitch of the first thread is smaller than the pitch of the second thread, the first and second partition plates 314, 315 move synchronously at different speeds for the same number of rotations of the rotating shaft 411. The displacement of the first partition plate 314 is smaller than that of the second partition plate 315, thereby maintaining a sequentially decreasing volume relationship between the second chamber 312, the first chamber 311, and the third chamber 313.

[0092] As the volume of each chamber changes, the amount of coupling agent distributed is also adjusted accordingly, and each chamber evenly applies the coupling agent to the welding area 110 through the discharge port.

[0093] The rotating shaft 411 is threadedly connected to the first partition plate 314 and the second partition plate 315 at the same time. When the rotating shaft 411 rotates, it will drive the first partition plate 314 and the second partition plate 315 to move at the same time, realizing the synchronous movement of the first partition plate 314 and the second partition plate 315.

[0094] The different pitches of the first and second threads result in different movement distances of the first and second partition plates 314, 315 when the rotating shaft 411 rotates the same amount. By properly designing the pitches, the volume adjustment of each chamber can be precisely controlled based on actual needs, achieving differentiated and synchronized adjustment of the chamber volumes, thereby ensuring that the coupling agent is evenly applied to the welding area 110.

[0095] Therefore, through the threaded connection between the rotating shaft 411 and the first partition plate 314 and the second partition plate 315 and the threads with different pitches, the moving distance of the first partition plate 314 and the second partition plate 315 can be accurately and synchronously controlled, thereby achieving precise adjustment of the volume of each chamber.

[0096] In one embodiment, Figure 2-Figure 9 As shown, in order to adjust the volume of each chamber in real time according to the tilt angle of the welding area 110 , the driving mechanism 400 includes a gear set 420 , which is used to convert the deflection motion of the application shell 310 into the rotation motion of the rotating shaft 411 .

[0097] Specifically, the driving mechanism 400 includes a driving frame, which is rotatably connected to the application housing 310 .

[0098] The gear set 420 includes multiple gears and rods, specifically a fixed gear 421 , a first self-rotating gear 422 , a second self-rotating gear 423 , a first gear 424 , a first sliding rod 425 , a second sliding rod 426 , a fixed rod 427 , a transmission gear 428 and a driving gear 429 .

[0099] The fixed gear 421 is fixedly connected to the driving frame.

[0100] The first self-rotating gear 422 is fixed to the application housing 310 and meshes with the fixed gear 421. The first self-rotating gear 422 can revolve around the central axis of the fixed gear 421 and can also rotate around its own central axis.

[0101] The first gear 424 is sleeved on the first self-rotating gear 422 and meshes with the first self-rotating gear 422. The first gear 424 transmits the rotation of the first self-rotating gear 422 to the first sliding rod 425.

[0102] The upper end of the first sliding rod 425 is engaged with the first gear 424, and the lower end is engaged with the second self-rotating gear 423. The first sliding rod 425 converts the rotation of the first gear 424 into its own linear motion.

[0103] The second self-rotating gear 423 is engaged with the first sliding rod 425 and the second sliding rod 426 respectively to transition the transmission and change the direction and transmission path of the movement.

[0104] The second sliding rod 426 is engaged with the second rotation gear 423 , and its movement direction is opposite to that of the first sliding rod 425 .

[0105] The fixing rods 427 are provided at both ends of the applicator housing 310 and are provided with threads. The first sliding rod 425, the second sliding rod 426 and the transmission gear 428 are sleeved on both ends of the fixing rod 427. The fixing rod 427 provides guidance and support for the movement of the first sliding rod 425, the second sliding rod 426 and the transmission gear 428. At the same time, its threaded structure is used to realize the rotation and axial movement of the transmission gear 428.

[0106] The transmission gear 428 is mounted on the fixed rod 427 and meshes with the driving gear 429. Driven by the first sliding rod 425 and the second sliding rod 426, the transmission gear 428 moves and rotates along the central axis of the fixed rod 427, converting the linear motion of the first sliding rod 425 and the second sliding rod 426 into rotational motion and transmitting it to the driving gear 429.

[0107] The driving gears 429 are provided at both ends of the rotating shaft 411 and mesh with the transmission gear 428. The driving gears 429 transmit the rotation of the transmission gear 428 to the rotating shaft 411, driving the rotating shaft 411 to rotate.

[0108] When the applicator housing 310 contacts the inclined surface of the welding area 110, the tilt of the welding area 110 causes relative rotation between the applicator housing 310 and the drive frame. This relative rotation causes the first self-rotating gear 422, fixed to the applicator assembly 300, to orbit around the central axis of the fixed gear 421 while simultaneously rotating around its own central axis. The rotation of the first self-rotating gear 422 drives the meshed first gear 424 to rotate. The rotation of the first gear 424 drives the meshed first sliding rod 425 to move forward. This movement of the first sliding rod 425 rotates the meshed second self-rotating gear 423, which in turn drives the second self-rotating gear 423 to move in the opposite direction from the first sliding rod 425. The movement of the first and second sliding rods 425, 426 drives the transmission gear 428, mounted on the fixed rod 427, to move along its central axis. Due to the threads on the fixed rod 427, the transmission gear 428 rotates while moving axially. Drive gears 429 at both ends of the rotating shaft 411 mesh with transmission gears 428. The rotation of the transmission gears 428 drives the drive gears 429, which in turn rotates the rotating shaft 411. The rotation of the rotating shaft 411, through a threaded connection, moves the first and second partition plates 314, 315, thereby adjusting the volumes of the first, second, and third chambers 311, 312, and 313 to accommodate the couplant distribution requirements of the welding area 110's inclination angle.

[0109] Therefore, by setting up the gear set 420, the tilting movement of the coating shell 310 is converted into the power for adjusting the chamber volume, and the volume of each chamber can be automatically adjusted according to the tilt angle of the welding area 110 to achieve adaptive distribution of the coupling agent.

[0110] It is understandable that the positional relationship between the gears and related components in the gear set 420 can be diverse. For example, the fixed gear 421 can always serve as the transmission reference point throughout the entire transmission process, so that the entire transmission system maintains a relatively stable starting state.

[0111] However, the positional relationship of components such as the fixed gear 421, the first self-rotating gear 422, the first gear 424, the first sliding rod 425, the second self-rotating gear 423, the second sliding rod 426, the transmission gear 428 and the driving gear 429 should enable the power to ultimately realize the rotation of the rotating shaft 411 to adjust the volume of each chamber.

[0112] In one embodiment, during the strength test of the automobile dashboard crossbeam support 100 , impurities on the surface of the welding area 110 may interfere with signal transmission, causing distortion of the test signal and seriously affecting the accuracy of the test result.

[0113] like Figure 2-Figure 4As shown, in order to reduce impurities on the surface of the crossbeam bracket 100 , the strength detection device for the automobile instrument panel crossbeam bracket provided by the embodiment of the present invention further includes a cleaning component 500 , which is used to clean impurities on the surface of the crossbeam bracket 100 .

[0114] Specifically, cleaning assembly 500 includes a rotatable adhesive roller 510. During the cleaning process, adhesive roller 510 directly contacts the surface of welding area 110, removing impurities from the surface and preventing them from interfering with the detection signal. Adhesive roller 510 contacts the surface of welding area 110, and its viscosity absorbs impurities on the surface.

[0115] Therefore, by providing the cleaning component 500 to clean impurities on the surface of the welding area 110, the interference of impurities on the detection signal is eliminated, and the detection reliability is enhanced.

[0116] Typically, the cleaning component 500 can be a rotatable sticky roller 510 with a sticky surface, or a rotating brush roller with bristles, a high-pressure air flow nozzle, or an ultrasonic cleaning device.

[0117] It is understandable that other common surface cleaning mechanisms can be used in the present invention to clean impurities on the surface of the welding area 110 .

[0118] In one embodiment, Figure 2-Figure 6 As shown, in the strength test of the automobile dashboard crossbeam bracket 100, the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 need to fit tightly to the complex curved surface of the crossbeam bracket 100 to ensure uniform coating of the coupling agent and stable transmission of the detection signal, and to prevent gaps from appearing at the undulating parts of the curved surface, which may cause uneven coating of the coupling agent or attenuation of the ultrasonic signal. The driving mechanism 400 includes an arc frame 430, and the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 are fixedly connected to the arc frame 430. The driving mechanism 400 drives the arc frame 430 to make the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 fit the surface of the crossbeam bracket 100.

[0119] The ultrasonic detection assembly 200, the coating assembly 300 and the cleaning assembly 500 are connected to the arc frame 430 via the elastic member 440. The elastic member 440 enables the ultrasonic detection assembly 200, the coating assembly 300 and the cleaning assembly 500 to always fit tightly when contacting the welding area 110.

[0120] Specifically, the curvature of the curved frame 430 matches the typical curved surface profile of the beam support 100, providing initial alignment guidance. The curved frame 430 is translated as a whole by the driving mechanism 400, driving the ultrasonic detection assembly 200, the coating assembly 300, and the cleaning assembly 500 to approach the surface of the beam support 100.

[0121] The ultrasonic detection component 200, the coating component 300 and the cleaning component 500 are connected to the arc frame 430 via the elastic member 440. The elastic force of the elastic member 440 always makes the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 located at the initial position or have a tendency to approach the initial position.

[0122] The driving mechanism 400 drives the arc frame 430 to approach the beam support 100, the elastic member 440 is in a naturally extended state, and the ultrasonic detection component 200, the smearing component 300 and the cleaning component 500 are in the initial positions.

[0123] The driving mechanism 400 pushes the arc frame 430 to move toward the surface of the beam support 100, and the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 contact the welding area 110. As the arc frame 430 continues to move, the elastic part 440 is compressed and deformed, and the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 follow the curved surface contour and fit closely to the beam support 100.

[0124] The drive mechanism 400 drives the crossbeam support 100 to begin rotating. The area to be inspected first passes through the cleaning assembly 500. Under the elastic force of the elastic member 440, the cleaning assembly 500 removes surface impurities using a sticky roller 510 or a brush roller. The area then passes through the coating assembly 300. Under the action of the elastic member 440, the bottom wall of the coating housing 310 is constantly in contact with the surface of the weld area 110, dynamically adjusting the chamber volume to evenly apply the coupling compound. Finally, the area passes through the ultrasonic testing assembly 200, which contacts the surface of the weld area 110 for inspection.

[0125] After the beam support 100 is fully inspected, the driving mechanism 400 drives the arc frame 430 away from the beam support 100, the elastic member 440 releases the elastic force, and the ultrasonic detection component 200, the smearing component 300 and the cleaning component 500 are reset to the initial position, completing one inspection of the beam support 100.

[0126] Therefore, by setting the arc frame 430 and the elastic member 440, the elastic member 440 deforms to absorb the displacement difference caused by the undulation of the curved surface, so that each component can dynamically adjust its position in the direction perpendicular to the curved surface, so that each component can always adhere to the surface of the welding area 110 for cleaning, applying coupling agent and testing during testing.

[0127] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0128] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A strength detection device for a crossbeam support of an automobile instrument panel, characterized in that: include: Ultrasonic testing component, used to test the strength of the beam support; An smear assembly includes an smear housing and a delivery tube. The smear housing is used to contain a coupling agent and is in contact with the surface of the crossbeam support. The coupling agent is applied to the welding area of ​​the crossbeam support. The smear housing is internally provided with a plurality of chambers with adjustable volumes. The chambers include at least a first chamber, a second chamber, and a third chamber arranged in sequence along the extension direction of the welding area. The volumes of the first chamber, the second chamber, and the third chamber are positively correlated with the amount of coupling agent discharged. The coupling agent in the first chamber is applied to the upstream area of ​​the welding area, the coupling agent in the second chamber is applied to the midstream area of ​​the welding area, and the coupling agent in the third chamber is applied to the downstream area of ​​the welding area. A driving mechanism, when the coating shell is tilted in the area where the welding machine is bonded, the driving mechanism causes the volumes of the second chamber, the first chamber, and the third chamber to decrease in sequence according to the tilt angle of the welding area; A first partition plate and a second partition plate are provided in the application housing. The first partition plate is located between the first chamber and the second chamber, and the second partition plate is located between the second chamber and the third chamber. The driving mechanism adjusts the positional relationship between the first partition plate and the second partition plate to adjust the volume of the first chamber, the second chamber, and the third chamber. The application housing is provided with a connecting chamber and a distribution hole. The connecting chamber connects the delivery tube and the first chamber, the second chamber, and the third chamber. The coupling agent enters the first chamber, the second chamber, and the third chamber through the multiple distribution holes. The driving mechanism includes a transmission assembly, which includes a rotating shaft, the rotating shaft passes through the first partition plate and the second partition plate, the rotating shaft and the first partition plate are rotatably connected by a first thread, and the rotating shaft and the second partition plate are rotatably connected by a second thread. When the rotating shaft rotates around its own axis, the first thread causes the first partition plate to move linearly, and the second thread causes the second partition plate to move linearly. The pitch of the first thread is smaller than the pitch of the second thread so that the first partition plate and the second partition plate move synchronously and have different adjustment displacements.

2. The strength detection device for a crossbeam support of an automobile instrument panel according to claim 1, characterized in that: The delivery tube is used to transport the coupling agent into the applicator housing.

3. The strength detection device for a crossbeam support of an automobile instrument panel according to claim 1, characterized in that: The driving mechanism comprises a gear set, which is used to convert the deflection motion of the application housing into the rotational motion of the rotating shaft.

4. The strength detection device for a crossbeam support of an automobile instrument panel according to claim 1, characterized in that: It includes a cleaning component, which is used to remove impurities on the surface of the welding area.

5. The strength detection device for a crossbeam support of an automobile instrument panel according to claim 4, characterized in that: The cleaning assembly comprises a rotatable sticky roller, which contacts the surface of the welding area to absorb surface impurities of the welding area.

6. The strength detection device for a crossbeam support of an automobile instrument panel according to claim 4, characterized in that: The driving mechanism includes an arc frame, and the ultrasonic detection component, the smear component and the cleaning component are fixedly connected to the arc frame. The driving mechanism drives the arc frame so that the ultrasonic detection component, the smear component and the cleaning component fit the surface of the beam support.

7. The strength detection device for a crossbeam support of an automobile instrument panel according to claim 6, characterized in that: The ultrasonic detection component, the smear component and the cleaning component are connected to the arc frame through an elastic member, and the elastic force of the elastic member always makes the ultrasonic detection component, the smear component and the cleaning component located at the initial position or have a tendency to approach the initial position.

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