Strength detection device for automobile dashboard cross beam support

Abstract

The invention provides an automobile dashboard cross beam support strength detection device, which comprises a smearing assembly and a driving mechanism, the smearing assembly comprises a smearing shell, the smearing shell is used for accommodating a coupling agent and smearing the coupling agent on a cross beam support, the smearing shell is internally provided with a first chamber, a second chamber and a third chamber, the volumes of which can be adjusted, and the driving mechanism is used for driving the first chamber, the second chamber and the third chamber to rotate; the volume of the cavities and the liquid outlet amount of the coupling agent are in positive correlation, and the first cavity, the second cavity and the third cavity correspond to an upstream area, a middle flow area and a downstream area of the welding area in sequence. And when the area, attached to the welding machine, of the smearing shell inclines, the driving mechanism enables the volumes of the second cavity, the first cavity and the third cavity to be sequentially reduced according to the inclination angle of the welding area. Therefore, the interior of the smearing shell is arranged to be the cavity with the adjustable volume, so that the coupling agent in each area of the welding area can be uniformly distributed, and stable transmission of ultrasonic detection signals is ensured.

Description

Technical Field

[0001] The present invention relates to the field of automotive component detection, and particularly to a strength detection device for an automotive instrument panel crossbeam bracket. Background Art

[0002] In the field of automotive manufacturing, the strength of the welding area of an automotive instrument panel crossbeam bracket is directly related to the safety and reliability of the whole vehicle. Currently, non-destructive testing technologies such as ultrasonic testing are commonly used in the industry to evaluate the strength of the welding area of the crossbeam bracket.

[0003] When the ultrasonic testing device conducts strength detection on the automotive instrument panel crossbeam bracket, first clean the surface to be inspected of the crossbeam bracket, evenly apply a coupling agent to eliminate the air gap and ensure effective sound wave conduction; fit the ultrasonic probe to the applied area, adjust the instrument parameters to make the probe emit ultrasonic waves to penetrate the workpiece; the receiving end captures the reflected echo, and by analyzing the amplitude, propagation time, and waveform change of the echo, judge whether there are defects such as cracks and pores inside the bracket, and evaluate its strength performance.

[0004] However, in the prior art, since the welding end of the auxiliary beam needs to be pre-expanded, the concave-convex structure and inclination angle formed by the expansion change the surface flatness, resulting in the applied coupling agent flowing and accumulating towards the lower part under the action of gravity. This fluidity causes uneven distribution of the coupling agent on the surface of the welding position. In some areas, the coupling agent is too thin to effectively eliminate the air gap, and the sound wave conduction is blocked; in some areas, the coupling agent accumulates to form bubbles or liquid layers, interfering with the normal reflection and reception of ultrasonic waves. Uneven application of the coupling agent will directly affect the accuracy of the detection result, may cause missed detection or misjudgment of internal cracks, pores and other defects, lead to inaccurate evaluation of the strength performance of the crossbeam bracket, pose a safety hazard, increase the cost of repeated detection at the same time, and reduce the production efficiency.

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

[0006] Based on this, in view of the problem that the uneven distribution of the coupling agent in the current strength detection device for an automotive instrument panel crossbeam bracket leads to unstable ultrasonic detection signals, it is necessary to provide a strength detection device for an automotive instrument panel crossbeam bracket.

[0007] The above object is achieved by the following technical solutions: A strength detection device for an automotive instrument panel crossbeam bracket, comprising: An ultrasonic detection component, which is used to detect the strength of the crossbeam bracket.

[0008] Coating assembly, the coating assembly includes a coating housing for accommodating a coupling agent and fitting on the surface of the crossbeam bracket to apply the coupling agent on the welding area of the crossbeam bracket. Inside the coating housing, there are multiple chambers whose volumes can be adjusted. The chambers at least include a first chamber, a second chamber, and a third chamber. The volume sizes 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.

[0009] Driving mechanism. When the coating housing tilts while fitting on the welding machine area, the driving mechanism makes the volumes of the second chamber, the first chamber, and the third chamber decrease in sequence according to the tilt angle of the welding area.

[0010] In one embodiment, a first partition plate and a second partition plate are arranged inside the coating 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 achieve the adjustment of the volume sizes of the first chamber, the second chamber, and the third chamber.

[0011] In one embodiment, the coating assembly includes a delivery pipe for transporting the coupling agent into the coating housing.

[0012] In one embodiment, the coating housing is provided with a connection chamber and distribution holes. The connection chamber connects the delivery pipe with 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.

[0013] In one embodiment, the driving mechanism includes a transmission assembly. The transmission assembly includes a rotating shaft that penetrates through the first partition plate and the second partition plate. The rotating shaft is rotationally connected to the first partition plate through a first thread, and the rotating shaft is rotationally connected to the second partition plate through a second thread. When the rotating shaft rotates around its own axis, the first thread makes the first partition plate move linearly, and the second thread makes the second partition plate move linearly.

[0014] 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.

[0015] In one embodiment, the driving mechanism includes a gear set for converting the deflection motion of the coating housing into the rotational motion of the rotating shaft.

[0016] In one embodiment, a cleaning component is included for removing surface impurities in the welding area.

[0017] In one embodiment, the cleaning component includes a rotatable sticky roller that contacts the surface of the welding area to adsorb surface impurities in the welding area.

[0018] In one embodiment, the driving mechanism includes an arc-shaped frame, and the ultrasonic detection component, the coating component, and the cleaning component are fixedly connected to the arc-shaped frame. The driving mechanism drives the arc-shaped frame to make the ultrasonic detection component, the coating component, and the cleaning component fit the surface of the crossbeam bracket.

[0019] In one embodiment, the ultrasonic detection component, the coating component, and the cleaning component are connected to the arc-shaped frame through elastic members, and the elastic force of the elastic members always makes the ultrasonic detection component, the coating component, and the cleaning component located at the initial position or tend to be close to the initial position.

[0020] The beneficial effects of the present invention are as follows: The present invention provides a strength detection device for an automotive instrument panel crossbeam bracket, including a coating component and a driving mechanism. The coating component includes a coating housing for accommodating a coupling agent and applying the coupling agent to the welding area of the crossbeam bracket. Inside the coating housing, there are a first chamber, a second chamber, and a third chamber whose volumes can be adjusted. The volume of the chambers is positively correlated with the liquid output of the coupling agent. The first chamber, the second chamber, and the third chamber respectively correspond to the upstream area, the midstream area, and the downstream area of the welding area. When the coating housing tilts while fitting the welding area, the driving mechanism reduces the volumes of the second chamber, the first chamber, and the third chamber in sequence according to the tilt angle of the welding area to ensure that the coupling agent in each area of the welding area is evenly distributed, guaranteeing the stable transmission of ultrasonic detection signals. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of a strength detection device for an automotive instrument panel crossbeam bracket provided by an embodiment of the present invention; Figure 2 is Figure 1 the schematic structural diagram of the strength detection device for the automotive instrument panel crossbeam bracket in Figure 3 is Figure 2 the side view of the strength detection device for the automotive instrument panel crossbeam bracket in Figure 4For Figure 3 Explosion diagram of the strength detection device for the crossbeam bracket of the vehicle instrument panel in Figure 5 For Figure 4 Side view of the coating assembly of the strength detection device for the crossbeam bracket of the vehicle instrument panel in Figure 6 For Figure 5 Schematic cross-sectional view of the coating assembly of the strength detection device for the crossbeam bracket of the vehicle instrument panel in Figure 7 Schematic structural diagram of the coating assembly of the strength detection device for the crossbeam bracket of the vehicle instrument panel provided by an embodiment of the present invention Figure 8 For Figure 7 Partial enlarged view at position B of the coating assembly of the strength detection device for the crossbeam bracket of the vehicle instrument panel in Figure 9 Explosion diagram of the coating assembly of the strength detection device for the crossbeam bracket of the vehicle instrument panel provided by an embodiment of the present invention

[0022] Wherein: 100, crossbeam bracket; 110, welding area; 200, ultrasonic detection assembly; 300, coating assembly; 310, coating housing; 311, first chamber; 312, second chamber; 313, third chamber; 314, first partition plate; 315, second partition plate; 320, delivery pipe; 330, connection chamber; 340, distribution hole; 400, drive 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, drive gear; 430, arc-shaped frame; 440, elastic member; 500, cleaning assembly; 510, sticky roller. Detailed implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, 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 used to limit the present invention.

[0024] The serial numbers assigned to components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] The following refers to Figures 1 - 9 Describe the strength detection device for the instrument panel crossbeam bracket provided by the embodiment of the present invention.

[0027] As Figures 1 - 6 As shown, the strength detection device for the instrument panel crossbeam bracket provided by the embodiment of the present invention is particularly suitable for the strength detection of the instrument panel crossbeam bracket 100. Of course, it can also be applicable to the flaw detection operations of other components with similar welding structures or special surface morphologies.

[0028] Specifically, it includes a detection platform, an ultrasonic detection component 200, a three-jaw chuck, and a driving mechanism 400.

[0029] The detection platform serves as the support basis for the overall strength detection device and is used to fix the instrument panel crossbeam bracket 100, providing a stable installation reference for subsequent detection operations.

[0030] The ultrasonic detection component 200 detects internal defects (such as cracks and pores) in the welding area 110 by emitting and receiving ultrasonic signals to determine whether the welding strength meets the standard.

[0031] 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 to avoid affecting the detection accuracy due to shaking.

[0032] The driving mechanism 400 is used to control the axial movement of the ultrasonic detection assembly 200, so that it moves along the axis direction during the detection process to achieve full scanning coverage of the welding area 110. The driving mechanism 400 drives the dashboard crossbeam bracket 100 to rotate and move axially, so that the ultrasonic detection assembly 200 and other components can contact the welding area 110 at multiple angles to ensure that there is no blind spot in the detection.

[0033] In the prior art, in the process of strength testing of the crossbeam bracket 100 of the automobile instrument panel, it is necessary to use methods such as ultrasonic testing, and in order to ensure good transmission of the detection signal during ultrasonic testing, it is necessary to apply a coupling agent to the welding area 110. However, since the welding end of the auxiliary beam is expanded to form a special structure, the coupling agent, as a viscous fluid, is affected by the gravity component when flowing on the inclined surface, and will migrate along the slope direction, resulting in uneven distribution of the coupling agent on the surface of the welding position. The coupling agent in the upper area is easily lost due to gravity and the dosage is insufficient, while the coupling agent in the lower area is excessively accumulated, forming an uneven distribution with thin upper and thick lower. Uneven distribution of the coupling agent will cause the ultrasonic detection signal to be unstable, which will in turn affect the accuracy of the detection result, and may result in missed detection or misjudgment, etc., and it is impossible to accurately evaluate the strength of the welding area 110 of the crossbeam bracket 100 of the automobile instrument panel.

[0034] Based on this, the strength detection device of the automobile dashboard crossbeam bracket provided in the embodiment of the present invention includes a coating component 300 , and the coating component 300 includes a coating shell 310 , and the coating shell 310 is used to contain the coupling agent and evenly coat the coupling agent on the welding area 110 .

[0035] Specifically, when the coating shell 310 applies coupling agent to the welding area 110, the bottom wall of the coating shell 310 fits 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.

[0036] 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. 1 , 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.

[0037] The bottom wall of the coating housing 310 has a first discharge port, a second discharge port, and a third discharge port in sequence along the extension direction of the welding area 110, and the second discharge port is located at the middle position between the first discharge port and the third discharge port. The discharge port is connected to the corresponding chamber for discharging the coupling agent in the chamber to the welding area 110.

[0038] So that the discharge amount of the coupling agent is positively correlated with the volume of the chamber. The larger the volume of the chamber, the larger the corresponding discharge amount of the coupling agent. According to the conditions of different welding areas 110, the supply amount of the coupling agent is reasonably allocated to improve the uniformity of the coupling agent distribution.

[0039] The driving mechanism 400 is connected to the first chamber 311, the second chamber 312, and the third chamber 313, and is used to make the volumes of the second chamber 312, the first chamber 311, and the third chamber 313 decrease in sequence according to the inclination angle of the welding area 110, so as to change the liquid discharge amount of the coupling agent at each discharge port and achieve uniform distribution of the coupling agent in the welding area 110.

[0040] The first stroke is that the coupling agent flows from the upper flow area into the middle flow area, and the second stroke is that the coupling agent flows from the middle flow area into the lower flow area.

[0041] When the coating housing 310 is in a horizontal position, the liquid amounts of the coupling agent in the first chamber 311, the second chamber 312, and the third chamber 313 are made the same. For example, there are 10 units of coupling agent in each. After the coating housing 310 is attached to the surface of the welding area 110, the driving mechanism 400 starts to adjust the volumes of the first chamber 311, the second chamber 312, and the third chamber 313, so that after the adjustment is completed, the liquid amount of the coupling agent in each area of the welding area 110 is 10 units.

[0042] Since the third chamber 313 is located at the bottommost, the coupling agent at the upper end will flow to the lower flow area, increasing the liquid amount of the coupling agent in the lower flow area. Therefore, the volume of the third chamber 313 is made the minimum value, and the volume of the third chamber 313 is decreased. For example, it is decreased by 4 units. Also, because the volume of the coating housing 310 remains unchanged, the decreased volume of the third chamber 313 is equal to the sum of the increased volumes of the second chamber 312 and the first chamber 311.

[0043] The following discusses the distribution of the coupling agent in different volume adjustment modes by cases: Case 1: When the volume of the first chamber 311 is increased by 3 units, the liquid amount of the coupling agent in the upper flow area is correspondingly increased by 3 units, and when the volume of the second chamber 312 is increased by 1 unit, the liquid amount of the coupling agent in the middle flow area is increased by 1 unit.

[0044] All the coupling agent in each chamber flows to the welding area 110. The amount of the coupling agent liquid in the upper flow area is 13 units, the amount of the coupling agent liquid in the middle flow area is 11 units, and the amount of the coupling agent liquid in the lower flow area is 6 units.

[0045] Since the flow rate is proportional to the flow velocity, the amount of the coupling agent liquid in the upper flow area is greater than that in the middle flow area. Therefore, within the same time, the flow velocity of the coupling agent in the first stroke is greater than that in the second stroke, and thus the flow rate of the coupling agent in the first stroke is greater than that in the second stroke. The increase amount of the coupling agent in the middle flow area is greater than the decrease amount, so the amount of the coupling agent liquid in the middle flow area must be greater than the average value.

[0046] Obviously, when the volume of the adjusted first chamber 311 is greater than that of the second chamber 312, the coupling agent cannot be evenly distributed in the welding area 110.

[0047] Case 2: When the volume of the first chamber 311 increases by 1 unit and the amount of the coupling agent liquid in the upper flow area increases by 1 unit accordingly, and the volume of the second chamber 312 increases by 3 units, the amount of the coupling agent liquid in the middle flow area increases by 3 units.

[0048] All the coupling agent in each chamber flows to the welding area 110. The amount of the coupling agent liquid in the upper flow area is 11 units, the amount of the coupling agent liquid in the middle flow area is 13 units, and the amount of the coupling agent liquid in the lower flow area is 6 units.

[0049] Similarly, since the flow rate is proportional to the flow velocity, the amount of the coupling agent liquid in the upper flow area is less than that in the middle flow area. Therefore, within the same time, the flow velocity of the coupling agent in the first stroke is less than that in the second stroke, the flow rate of the coupling agent in the first stroke is less than that in the second stroke, and more in the middle flow area flows to the lower flow area. In this case, the coupling agent in both the upper flow area and the middle flow area decreases, while the coupling agent in the lower flow area increases. Obviously, when the volume of the first chamber 311 is less than that of the second chamber 312, there is a uniform distribution or a tendency of uniform distribution of the coupling agent in the welding area 110.

[0050] 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 distribution of the coupling agent in each area of the welding area 110 uniform.

[0051] Thus, by setting the inside of the coating housing 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 the uneven distribution of the coupling agent.

[0052] It can be understood that when the application housing 310 is divided into multiple chambers, except for the chambers at both ends of the application housing 310, such as the first chamber 311 and the third chamber 313, the welding areas 110 corresponding to the chambers in the middle position can be used to apply the coupling agent to the flow area in the welding area 110. The middle flow area undertakes the dual functions of the upstream fluid inflow and the downstream fluid outflow during the flow of the coupling agent. At this time, the volume adjustment of the chambers in each middle flow area needs to follow the symmetry principle, that is, the volume change amounts of adjacent chambers in the middle flow area need to be kept consistent to avoid the non-uniform accumulation of the coupling agent in the welding area 110 due to local flow imbalance.

[0053] Specifically, when the application housing 310 is tilted along with the welding area 110, the chamber at the uppermost end is located at the highest position, and the coupling agent inside it can only flow downstream, and there is no situation of upstream fluid inflow. Therefore, the amount of the coupling agent liquid in the uppermost chamber will only decrease.

[0054] The chamber at the lowermost end is located at the lowest position and will converge the coupling agent flowing down from the upstream chamber. Therefore, the amount of the coupling agent liquid in the lowermost chamber will only increase.

[0055] For the middle flow chambers in the middle position, there are two-way flows of upstream fluid inflow and downstream outflow in the corresponding welding area 110. To ensure that the inflow amount of the coupling agent in the middle flow area is equal to the outflow amount, it is necessary to adjust the volume of the middle flow chambers in equal amplitude and in the same direction through the driving mechanism 400.

[0056] It can be understood that in the circumferential direction of the crossbeam bracket 100, the distance between the application assembly 300 and the ultrasonic detection assembly 200 is relatively short. The influence caused by the flow of the coupling agent in the circumferential direction is relatively small and can be ignored.

[0057] In one embodiment, as Figures 1 - 6 shown, in order to better adjust the volumes 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 arranged inside the application housing 310, and the driving mechanism 400 drives the positions of the first partition plate 314 and the second partition plate 315 to realize the adjustment of the volumes of the first chamber 311, the second chamber 312, and the third chamber 313.

[0058] 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.

[0059] 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, so as to adjust the volumes of the first chamber 311, the second chamber 312, and the third chamber 313.

[0060] When the coating housing 310 is in a horizontal position, the volumes of the first chamber 311, the second chamber 312, and the third chamber 313 are the same and store the coupling agent in the same unit.

[0061] Attach the coating housing 310 to the surface of the welding area 110. The driving mechanism 400 corresponds to the volume sizes that need to be adjusted for the first chamber 311, the second chamber 312, and the third chamber 313 according to the inclination angle of the welding area 110. Then, drive the first partition plate 314 and the second partition plate 315 to move to the corresponding positions to change the volumes of the first chamber 311, the second chamber 312, and the third chamber 313.

[0062] After the volume adjustment of the chamber is completed, the coupling agent flows out through each discharge port and flows on the welding area 110 under the action of gravity.

[0063] Thus, by controlling the positions of the first partition plate 314 and the second partition plate 315 by the driving mechanism 400, the volumes of the first chamber 311, the second chamber 312, and the third chamber 313 are adjusted, so that the coupling agent is more evenly distributed on the welding area 110.

[0064] In one of the embodiments, as Figures 2 - 9 shown, the coating assembly 300 includes a delivery pipe 320 for transporting the coupling agent. The coating housing 310 is provided with a connection chamber 330 and a plurality of distribution holes 340. The connection chamber 330 connects the delivery pipe 320 and the chambers, and the coupling agent enters the chambers through the plurality of distribution holes 340.

[0065] Specifically, the distribution holes 340 are located between the connection chamber 330 and the first chamber 311, the second chamber 312, and the third chamber 313, and are the channels for the coupling agent to enter the chambers from the connection chamber 330.

[0066] The coupling agent enters the connection chamber 330 through the delivery pipe 320 and then enters the chambers through the distribution holes 340. The driving mechanism 400 drives the first partition plate 314 and the second partition plate 315 to adjust the number of distribution holes 340 in the first chamber 311, the second chamber 312, and the third chamber 313, so as to adjust the liquid amount of the coupling agent in the chambers of different volumes.

[0067] The driving mechanism 400 drives the first partition plate 314 and the second partition plate 315 to move to the required positions according to the inclination angle of the welding area 110, and adjusts the number of distribution holes 340 corresponding to the first chamber 311, the second chamber 312, and the third chamber 313. For example, if the second chamber 312 requires more coupling agent, the driving 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 driving mechanism 400 will reduce the number of distribution holes 340 corresponding to the third chamber 313.

[0068] After the number of distribution holes 340 is adjusted, the coupling agent enters the connection cavity 330 of the coating housing 310 through the delivery pipe 320. The connection cavity 330 temporarily stores the coupling agent, enabling the coupling agent to flow evenly through the multiple distribution holes 340. The coupling agent enters each chamber from the connection cavity 330 through the distribution holes 340. Each chamber evenly applies the coupling agent onto the welding area 110 through the discharge port at the bottom according to the liquid volume of the coupling agent stored therein.

[0069] Thus, by providing the connection cavity 330 and the distribution holes 340, the driving mechanism 400 adjusts the number of distribution holes 340 of each chamber, and realizes the distribution of the liquid volume of the coupling agent through the number of distribution holes 340, achieving precise control of the supply amount of the coupling agent in each chamber.

[0070] In one embodiment, as Figures 2 - 9 shown, the driving mechanism 400 includes a transmission assembly 410, and the transmission assembly 410 is used to synchronously transmit power to the first partition plate 314 and the second partition plate 315.

[0071] Specifically, the transmission assembly 410 includes a rotating shaft 411, and the rotating shaft 411 penetrates 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 rotational motion into the linear motion of the first partition plate 314 and the second partition plate 315.

[0072] 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 realizing the volume size relationship among the first chamber 311, the second chamber 312, and the third chamber 313.

[0073] The driving mechanism 400 provides power for the transmission assembly 410 according to the inclination angle of the welding area 110, and rotates the rotating shaft 411 by a corresponding angle according to the volume sizes that need to be adjusted for the first chamber 311, the second chamber 312, and the third chamber 313.

[0074] When the rotating shaft 411 rotates, due to the existence of the first thread and the second thread, the first partition plate 314 and the second partition plate 315 will move linearly along the rotating shaft 411. Since the pitch of the first thread is smaller than that of the second thread, at the same number of rotation turns of the rotating shaft 411, the first partition plate 314 and the second partition plate 315 will move synchronously at different speeds, and the moving displacement of the first partition plate 314 is smaller than that of the second partition plate 315, so as to always maintain the volume relationship in which the second chamber 312, the first chamber 311 and the third chamber 313 decrease in sequence.

[0075] As the volume of each chamber changes, the distribution amount of the coupling agent is also adjusted accordingly, and each chamber evenly applies the coupling agent to the welding area 110 through the discharge port.

[0076] The rotating shaft 411 is threadedly connected to both 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 simultaneously, realizing the synchronous movement of the first partition plate 314 and the second partition plate 315.

[0077] The different pitches of the first thread and the second thread result in different moving distances of the first partition plate 314 and the second partition plate 315 under the same rotation condition of the rotating shaft 411. By reasonably designing the pitch, the adjustment amount of the volume of each chamber can be accurately controlled according to actual requirements, realizing the differential synchronous adjustment of the volume of each chamber, so that the coupling agent can be evenly applied to the welding area 110.

[0078] Therefore, through the threaded connection of the rotating shaft 411 with the first partition plate 314 and the second partition plate 315 and the threads with different pitches, the moving distances of the first partition plate 314 and the second partition plate 315 can be accurately and synchronously controlled, so as to realize the accurate adjustment of the volume of each chamber.

[0079] In one embodiment, as Figures 2 - 9 shown, in order to adjust the volume of each chamber in real time according to the inclination angle of the welding area 110, the driving mechanism 400 includes a gear set 420, and the gear set 420 is used to convert the deflection movement of the coating housing 310 into the rotational movement of the rotating shaft 411.

[0080] Specifically, the driving mechanism 400 includes a driving frame, and the driving frame is rotatably connected to the coating housing 310.

[0081] The gear set 420 includes a plurality of gears and rods, specifically including 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.

[0082] The fixed gear 421 is fixedly connected to the driving frame.

[0083] The first self-rotating gear 422 is fixed on the coating 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 rotate around its own central axis at the same time.

[0084] 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.

[0085] The upper end of the first sliding rod 425 meshes with the first gear 424, and the lower end meshes 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.

[0086] The second self-rotating gear 423 meshes with the first sliding rod 425 and the second sliding rod 426 respectively for transitional transmission to change the direction and transmission path of the motion.

[0087] The second sliding rod 426 meshes with the second self-rotating gear 423, and its motion direction is opposite to that of the first sliding rod 425.

[0088] The fixed rods 427 are arranged at both ends of the coating housing 310, and the fixed rods 427 are provided with threads. The first sliding rod 425, the second sliding rod 426 and the transmission gear 428 are sleeved at both ends of the fixed rod 427. The fixed rod 427 provides guidance and support for the motion 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.

[0089] The transmission gear 428 is sleeved on the fixed rod 427 and meshes with the driving gear 429. The transmission gear 428 moves and rotates along the central axis of the fixed rod 427 under the drive of the first sliding rod 425 and the second sliding rod 426, and converts the linear motion of the first sliding rod 425 and the second sliding rod 426 into rotational motion and transmits it to the driving gear 429.

[0090] The driving gear 429 is arranged at both ends of the rotating shaft 411 and meshes with the transmission gear 428. The driving gear 429 transmits the rotation of the transmission gear 428 to the rotating shaft 411 to drive the rotating shaft 411 to rotate.

[0091] When the application housing 310 contacts the inclined surface of the welding area 110, due to the inclination of the welding area 110, relative rotation occurs between the application housing 310 and the drive frame. The relative rotation between the application housing 310 and the drive frame causes the first self-rotating gear 422 fixed on the application assembly 300 to revolve around the central axis of the fixed gear 421 and rotate around its own central axis at the same time. The rotation of the first self-rotating gear 422 drives the rotation of the first gear 424 meshing with it. The rotation of the first gear 424 drives the first sliding rod 425 meshing with it to move forward, and the movement of the first sliding rod 425 drives the rotation of the second self-rotating gear 423 meshing with it. The rotation of the second self-rotating gear 423 drives the second sliding rod 426 to move in the direction opposite to that of the first sliding rod 425. The movement of the first sliding rod 425 and the second sliding rod 426 drives the transmission gear 428 sleeved on the fixed rod 427 to move along the central axis of the fixed rod 427. Due to the thread on the fixed rod 427, the transmission gear 428 rotates while moving axially. The drive gears 429 at both ends of the rotating shaft 411 mesh with the transmission gear 428, and the rotation of the transmission gear 428 drives the drive gears 429 to rotate, thereby causing the rotating shaft 411 to rotate. The rotation of the rotating shaft 411 drives the movement of the first partition plate 314 and the second partition plate 315 through a threaded connection, thereby adjusting the volumes of the first chamber 311, the second chamber 312, and the third chamber 313 to meet the requirements of the inclination angle of the welding area 110 for the distribution of the coupling agent.

[0092] Thus, by setting the gear set 420, the inclined movement of the application housing 310 is converted into the adjustment power of the chamber volume, and the volumes of the chambers can be automatically adjusted according to the inclination angle of the welding area 110, realizing the adaptive distribution of the coupling agent.

[0093] It can be understood that the positional relationships of the gears and related components in the gear set 420 can be diverse. For example, the fixed gear 421 can always serve as the reference point for transmission throughout the transmission process, enabling the entire transmission system to maintain a relatively stable starting state.

[0094] However, the positional relationships 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 drive gear 429 should enable the power to ultimately rotate the rotating shaft 411 to adjust the volumes of the chambers.

[0095] In one embodiment, during the strength detection of the automotive instrument panel crossbeam bracket 100, impurities on the surface of the welding area 110 will interfere with the signal transmission, resulting in signal distortion of the detection signal and seriously affecting the accuracy of the detection result.

[0096] Such as Figures 2 - 4As shown in the figure, in order to reduce the impurities on the surface of the crossbeam bracket 100, the strength detection device for the automotive instrument panel crossbeam bracket provided by the embodiment of the present invention further includes a cleaning component 500, and the cleaning component 500 is used to clean the impurities on the surface of the crossbeam bracket 100.

[0097] Specifically, the cleaning component 500 includes a rotatable sticky roller 510. During the cleaning process, the sticky roller 510 is in direct contact with the surface of the welding area 110, taking away the impurities from the surface and avoiding the interference of the impurities with the detection signal. The sticky roller 510 contacts the surface of the welding area 110, and adsorbs the impurities on the surface through the stickiness of the sticky roller 510.

[0098] Thus, by setting the cleaning component 500 to clean the impurities on the surface of the welding area 110, the interference of the impurities with the detection signal is eliminated, and the detection reliability is enhanced.

[0099] Generally, 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 nozzle or an ultrasonic cleaning device, etc.

[0100] It can be understood that other common surface cleaning mechanisms can be used in the present invention to realize the cleaning of the impurities on the surface of the welding area 110.

[0101] In one of the embodiments, as Figures 2 - 6 shown, in the strength detection of the automotive instrument panel crossbeam bracket 100, the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 need to be closely attached to the surface of the crossbeam bracket 100 with a complex curved surface to ensure uniform coating of the coupling agent and stable transmission of the detection signal, and prevent gaps from easily appearing at the undulating parts of the curved surface, resulting in uneven coating of the coupling agent or attenuation of the ultrasonic signal. Therefore, the driving mechanism 400 includes an arc-shaped frame 430, and the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 are fixedly connected to the arc-shaped frame 430, and the driving mechanism 400 drives the arc-shaped 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.

[0102] The ultrasonic detection component 200, the coating component 300 and the cleaning component 500 are connected to the arc-shaped frame 430 through elastic members 440. The elastic members 440 enable the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 to always be closely attached when contacting the welding area 110.

[0103] Specifically, the radian of the arc-shaped frame 430 matches the typical curved surface contour of the crossbeam bracket 100, providing an initial fitting guide. The arc-shaped frame 430 realizes overall translation through the driving mechanism 400, driving the ultrasonic detection component 200, the coating component 300 and the cleaning component 500 to approach the surface of the crossbeam bracket 100.

[0104] The ultrasonic detection assembly 200, the coating assembly 300, and the cleaning assembly 500 are connected to the arc-shaped frame 430 through the elastic member 440. The elastic force of the elastic member 440 always causes the ultrasonic detection assembly 200, the coating assembly 300, and the cleaning assembly 500 to be in the initial position or have a tendency to be close to the initial position.

[0105] The driving mechanism 400 drives the arc-shaped frame 430 to approach the crossbeam support 100. The elastic member 440 is in a natural elongation state, and the ultrasonic detection assembly 200, the coating assembly 300, and the cleaning assembly 500 are in the initial position.

[0106] The driving mechanism 400 pushes the arc-shaped frame 430 to move towards the surface of the crossbeam support 100. The ultrasonic detection assembly 200, the coating assembly 300, and the cleaning assembly 500 contact the welding area 110. As the arc-shaped frame 430 continues to move, the elastic member 440 is compressed and deformed, and the ultrasonic detection assembly 200, the coating assembly 300, and the cleaning assembly 500 closely fit the crossbeam support 100 along the curved surface contour.

[0107] The driving mechanism 400 drives the crossbeam support 100 to start rotating. The area to be detected first passes through the cleaning assembly 500, and the cleaning assembly 500 removes surface impurities through the sticky roller 510 or the brush roller under the action of the elastic force of the elastic member 440. Then it passes through the coating assembly 300. Under the action of the elastic member 440, the bottom wall of the coating housing 310 always fits the surface of the welding area 110, and the chamber volume is dynamically adjusted to evenly apply the coupling agent. Finally, it passes through the ultrasonic detection assembly 200, and the ultrasonic detection assembly 200 contacts the surface of the welding area 110 for detection.

[0108] After the crossbeam support 100 is completely detected, the driving mechanism 400 drives the arc-shaped frame 430 away from the crossbeam support 100, the elastic member 440 releases the elastic force, and the ultrasonic detection assembly 200, the coating assembly 300, and the cleaning assembly 500 are reset to the initial position, completing one detection of the crossbeam support 100.

[0109] Thus, by setting the arc-shaped frame 430 and the elastic member 440, the deformation of the elastic member 440 absorbs the displacement difference generated by the undulation of the curved surface, enabling each component to dynamically adjust its position in the direction perpendicular to the curved surface, so that each component can always fit the surface of the welding area 110 for cleaning, applying the coupling agent, and detection during the detection.

[0110] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered to be within the scope described in this specification.

[0111] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. An intensity detection device for a crossbeam bracket of an automotive instrument panel, characterized in that, Including: An ultrasonic detection component for detecting the strength of the crossbeam support; A coating component, which includes a coating housing for accommodating a coupling agent and fitting with the surface of the crossbeam support to apply the coupling agent onto the welding area of the crossbeam support. There are multiple chambers with adjustable volumes inside the coating housing. The chambers at least include a first chamber, a second chamber, and a third chamber. The volume sizes 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; A driving mechanism. When the coating housing tilts when fitting with the welding area, the driving mechanism makes the volumes of the second chamber, the first chamber, and the third chamber decrease in sequence according to the tilt angle of the welding area.

2. The strength detection device for a crossbeam bracket of an automotive instrument panel according to claim 1, wherein, A first partition plate and a second partition plate are arranged inside the coating 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 achieve the adjustment of the volume sizes of the first chamber, the second chamber, and the third chamber.

3. The strength detection device for an automotive instrument panel crossbeam bracket according to claim 2, characterized in that, The coating component includes a delivery pipe for transporting the coupling agent into the coating housing.

4. The strength detection device for an instrument panel crossbeam bracket of an automobile according to claim 3, characterized in that, The coating housing is provided with a connection chamber and distribution holes. The connection chamber connects the delivery pipe with 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 multiple distribution holes.

5. The strength detection device for an instrument panel crossbeam bracket of an automobile according to claim 2, characterized in that, The driving mechanism includes a transmission component, which includes a rotating shaft. The rotating shaft penetrates through the first partition plate and the second partition plate. The rotating shaft is rotationally connected with the first partition plate through a first thread, and the rotating shaft is rotationally connected with the second partition plate through a second thread. When the rotating shaft rotates around its own axis, the first thread makes the first partition plate move linearly, and the second thread makes the second partition plate 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.

6. The strength detection device for a crossbeam bracket of an automotive instrument panel according to claim 5, characterized in that, The driving mechanism includes a gear set for converting the deflection movement of the coating housing into the rotational movement of the rotating shaft.

7. The strength detection device for a crossbeam bracket of an automotive instrument panel according to claim 1, wherein, Including a cleaning component for removing impurities on the surface of the welding area.

8. An intensity detection device for a crossbeam bracket of an automotive instrument panel according to claim 7, characterized in that, The cleaning component includes a rotatable sticky roller that contacts the surface of the welding area to adsorb the surface impurities of the welding area.

9. The strength detection device for an instrument panel crossbeam bracket of an automobile according to claim 7, characterized in that, The driving mechanism includes an arc-shaped frame. The ultrasonic detection component, the coating component, and the cleaning component are fixedly connected to the arc-shaped frame. The driving mechanism drives the arc-shaped frame so that the ultrasonic detection component, the coating component, and the cleaning component fit with the surface of the crossbeam support.

10. The strength detection device for an instrument panel crossbeam bracket of an automobile according to claim 9, characterized in that, The ultrasonic detection component, the coating component, and the cleaning component are connected to the arc-shaped frame through elastic members, and the elastic force of the elastic members always causes the ultrasonic detection component, the coating component, and the cleaning component to be in the initial position or tend to be close to the initial position.

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