Vehicle body stud welding strength detection device

Abstract

The utility model discloses an automobile body stud welding strength detection device, relates to the automobile production technology field, the automobile body stud welding strength detection device comprises a mechanical arm, an impact mechanism and a detection mechanism, the impact mechanism comprises a housing, a telescopic driving member and an impact member, the housing is connected with the end portion of the mechanical arm, an accommodating cavity is formed in the housing, and the detection mechanism is connected with the telescopic driving member. A connecting port is formed in one side, in the first direction, of the shell and communicates with the containing cavity, the telescopic driving part is located in the containing cavity, an output shaft of the telescopic driving part penetrates through the connecting port and is connected to the impacting part, and the output shaft can stretch out and draw back in the first direction so as to drive the impacting part to impact or be away from the stud in the first direction; the detection mechanism comprises a visual detection assembly and a pressure sensor, the visual detection assembly is used for obtaining image information of the stud, and the pressure sensor is connected to the impact piece and used for obtaining the impact force of the impact piece for impacting the stud. The stud welding strength is automatically detected through the detection mechanism, and the detection efficiency of the stud welding strength is improved.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a device for testing the welding strength of car body studs. Background Technology

[0002] During vehicle manufacturing, after the body studs are welded, the welding quality of the studs needs to be inspected. Currently, workers usually use rubber mallets to tap the studs to check the welding strength. However, manual inspection makes it difficult to ensure the consistency of the force applied during each inspection, resulting in inaccurate inspection results. This can easily lead to defective studs being shipped out. Furthermore, there are a large number of studs on the vehicle body, making manual inspection inefficient. Utility Model Content

[0003] The main purpose of this invention is to propose a device for testing the welding strength of vehicle body studs, which aims to solve the technical problems of inaccurate welding strength test results and low testing efficiency of manual testing of vehicle body studs in the prior art.

[0004] To achieve the above objectives, the present invention proposes a vehicle body stud welding strength testing device comprising a robotic arm, an impact mechanism, and a testing mechanism. The impact mechanism includes a housing, a telescopic drive component, and an impact component. The housing is connected to the end of the robotic arm, and a receiving cavity is formed within the housing. A connection port is provided on one side of the housing along a first direction, and the connection port communicates with the receiving cavity. The telescopic drive component is located within the receiving cavity, and the output shaft of the telescopic drive component passes through the connection port and is connected to the impact component. The output shaft can extend and retract along the first direction to drive the impact component to impact or move away from the stud along the first direction. The testing mechanism includes a visual inspection component and a pressure sensor. The visual inspection component is used to acquire image information of the stud, and the pressure sensor is connected to the impact component and used to acquire the impact force of the impact component impacting the stud.

[0005] In one embodiment, the housing includes a connecting plate and two side plates, the two side plates being respectively connected to both ends of the connecting plate. The connecting plate and the two side plates enclose the receiving cavity. The side of the connecting plate facing away from the receiving cavity is connected to the end of the robotic arm. The telescopic drive is fixed to the side of the connecting plate facing the receiving cavity.

[0006] In one embodiment, the impact member includes an impact portion and a mounting portion. Each of the side plates is provided with a sliding groove along the first direction. The impact mechanism further includes a guide assembly, which includes two sliding plates. The two sliding plates are slidably engaged with the two sliding grooves of the two side plates, and the two sliding plates are respectively connected to both sides of the mounting portion. The output shaft is connected to the mounting portion, and the telescopic drive member can drive the impact portion, the mounting portion, and the two sliding plates to move along the first direction through the output shaft, and impact or move away from the stud through the impact portion.

[0007] In one embodiment, the guide assembly further includes a guide seat and a guide rod. The guide seat is connected to the housing and located at the connection port. The guide seat has a through hole for the output shaft to pass through. The guide rod is connected to the guide seat and extends along the first direction. The mounting portion has a guide hole for the guide rod to pass through.

[0008] In one embodiment, there are two guide rods, which are located on both sides of the output shaft. The mounting portion has two guide holes, which correspond one-to-one with the two guide rods.

[0009] In one embodiment, the detection mechanism further includes a stroke sensor connected to either of the side plates, the stroke sensor facing the sliding plate on the same side and used to acquire the sliding stroke of the sliding plate.

[0010] In one embodiment, the housing further includes a bottom plate and two protective plates. The bottom plate is connected to the lower sides of the two side plates, and the two protective plates are connected to the upper sides of the two side plates. A moving channel is formed between the two protective plates for the telescopic drive member to pass through. The bottom plate, the two side plates, and the two protective plates together enclose the accommodating cavity.

[0011] In one embodiment, the visual inspection component includes a bracket and a camera. The bracket is connected to the housing, the camera is mounted on the bracket, and the camera is located below the impact member. The camera is used to capture image information of the stud.

[0012] In one embodiment, the telescopic drive component is a cylinder, the robotic arm is equipped with a solenoid valve and an air pipe, the solenoid valve is connected to the cylinder through the air pipe, and the air pipe is provided with a pressure switch, a pressure regulating valve and a pressure gauge at intervals.

[0013] In one embodiment, the robotic arm is also equipped with a thrust display, which is communicatively connected to the pressure sensor.

[0014] This invention proposes a vehicle body stud welding strength testing device. A robotic arm drives an impact mechanism to move in three axes, while a telescopic drive's output shaft moves an impactor in the first axis, ensuring precise impact on the stud to be tested. The impactor strikes the stud with a preset impact force. A vision inspection component acquires images of the stud before and after the impact. By comparing these images, the deformation of the stud under the preset impact force can be determined, allowing for a visual assessment of the welding condition. A pressure sensor detects the reaction force from the impact, further enhancing the accuracy of the welding strength test. This automated testing mechanism significantly improves the efficiency of stud welding strength testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of an embodiment of the vehicle body stud welding strength testing device provided by this utility model;

[0017] Figure 2 A schematic diagram of the impact mechanism of an embodiment of the vehicle body stud welding strength testing device provided by this utility model;

[0018] Figure 3 A partial structural schematic diagram of an embodiment of the vehicle body stud welding strength testing device provided by this utility model.

[0019] Explanation of icon numbers:

[0020] 10. Robotic arm; 20. Impact mechanism; 21. Housing; 211. Receiving cavity; 212. Connection port; 213. Connecting plate; 214. Side plate; 2141. Slide groove; 215. Base plate; 216. Protective plate; 217. Sliding plate; 218. Guide seat; 2181. Guide hole; 219. Guide rod; 22. Telescopic drive component; 221. Output shaft; 23. Impact component; 231. Impact part; 232. Mounting part; 30. Detection mechanism; 31. Vision inspection component; 311. Camera; 312. Bracket; 32. Stroke sensor; 40. Solenoid valve; 41. Air pressure switch; 42. Air pressure regulating valve; 43. Air pressure gauge; 44. Thrust indicator.

[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] In this utility model, the descriptions of directions such as "up", "down", "front", "back", "left", and "right" are as follows: Figure 1 and Figure 2 The directions shown are for reference only and are used to interpret the location. Figure 1 and Figure 2 The relative positional relationship between the components in the shown posture is such that if the specific posture changes, the directional indication will also change accordingly.

[0026] During vehicle manufacturing, after the body studs are welded, the welding quality of the studs needs to be inspected. Currently, workers usually use rubber mallets to tap the studs to check the welding strength. However, manual inspection makes it difficult to ensure the consistency of the force applied during each inspection, resulting in inaccurate inspection results. This can easily lead to defective studs being shipped out. Furthermore, there are a large number of studs on the vehicle body, making manual inspection inefficient.

[0027] This utility model proposes a vehicle body stud welding strength testing device, including a robotic arm 10, an impact mechanism 20, and a testing mechanism 30. The impact mechanism 20 includes a housing 21, a telescopic drive 22, and an impact member 23. The housing 21 is connected to the end of the robotic arm 10, and a receiving cavity 211 is formed inside the housing 21. A connection port 212 is opened on one side of the housing 21 along a first direction, and the connection port 212 communicates with the receiving cavity 211. The telescopic drive 22 is located inside the receiving cavity 211. The output shaft 221 of the telescopic drive 22 passes through the connection port 212 and is connected to the impact member 23. The output shaft 221 can extend and retract along the first direction to drive the impact member 23 to impact or move away from the stud along the first direction. The testing mechanism 30 includes a vision detection component 31 and a pressure sensor. The vision detection component 31 is used to acquire image information of the stud, and the pressure sensor is connected to the impact member 23 and is used to acquire the impact force of the impact member 23 impacting the stud.

[0028] Please see Figure 1 The first direction is Figure 1 In the front-rear direction, the impact mechanism 20 is located at the front end of the robotic arm 10, which can drive the impact mechanism 20 to move in three-axis directions. The body of the telescopic drive 22 is installed in the accommodating cavity 211 of the housing 21, and the output shaft 221 of the telescopic drive 22 passes through the connection port 212 opened on the front side of the housing 21 and is connected to the impact member 23. When the welding strength of the stud is tested by the vehicle body stud welding strength testing device, the impact mechanism 20 is first moved to the rear side of the stud to be tested by the robotic arm 10, and then the output shaft 221 of the telescopic drive 22 is extended to drive the impact member 23 to move forward, so that the impact member 23 impacts the stud with a preset impact force. The vision detection component 31 acquires the image information of the stud before and after the impact. By comparing the image information of the stud before and after the impact, the deformation of the stud under the impact of the preset impact force is obtained, thereby detecting the welding strength of the stud. The pressure sensor is used to verify that the impact force on the stud is a preset impact force, and to judge the welding strength of the stud by the reaction force fed back by the stud.

[0029] The vehicle body stud welding strength testing device proposed in this utility model uses a robotic arm 10 to drive an impact mechanism 20 to move in three axes, and a telescopic drive component 22's output shaft 221 to drive an impact component 23 to move in the first direction, ensuring that the impact component 23 can accurately impact the stud to be tested. The impact component 23 impacts the stud with a preset impact force, and the vision detection component 31 acquires image information of the stud before and after the impact. By comparing the image information before and after the impact, the deformation of the stud under the preset impact force can be obtained, thus allowing for a direct assessment of the stud's welding condition. A pressure sensor can acquire the reaction force of the impact feedback, thereby accurately detecting the stud's welding strength. The detection mechanism 30 achieves automated detection of stud welding strength, effectively improving the efficiency of stud welding strength detection.

[0030] In one embodiment, the housing 21 includes a connecting plate 213 and two side plates 214. The two side plates 214 are respectively connected to the two ends of the connecting plate 213. The connecting plate 213 and the two side plates 214 enclose a receiving cavity 211. The side of the connecting plate 213 facing away from the receiving cavity 211 is connected to the end of the robotic arm 10. The telescopic drive member 22 is fixed to the side of the connecting plate 213 facing the receiving cavity 211.

[0031] Please see Figure 2 One side of the connecting plate 213 is connected to the front end of the robotic arm 10, and the other side of the connecting plate 213 is connected to the base of the telescopic drive 22. The output shaft 221 of the telescopic drive 22 is connected to the impact member 23, thereby setting the impact mechanism 20 at the front end of the robotic arm 10 through the connecting plate 213. Two side plates 214 are respectively connected to the left and right ends of the connecting plate 213, and together with the connecting plate 213, they form a cavity 211 to provide installation space for the telescopic drive 22 and to protect the telescopic drive 22 through the two side plates 214. This helps to reduce space occupation, and the structure is compact and easy to disassemble and assemble.

[0032] In one embodiment, the impact member 23 includes an impact portion 231 and a mounting portion 232. Each side plate 214 is provided with a sliding groove 2141 along a first direction. The impact mechanism 20 also includes a guide assembly, which includes two sliding plates 217. The two sliding plates 217 are slidably engaged with the two sliding grooves 2141 of the two side plates 214, and the two sliding plates 217 are respectively connected to both sides of the mounting portion 232. The output shaft 221 is connected to the mounting portion 232. The telescopic drive member 22 can drive the impact portion 231, the mounting portion 232 and the two sliding plates 217 to move along the first direction through the output shaft 221, and impact or move away from the stud through the impact portion 231.

[0033] Furthermore, the two side plates 214 are slidably engaged with the two sliding plates 217, the front ends of which are connected to the two sides of the mounting portion 232, thereby providing support for the impactor 23 through the two side plates 214 and the output shaft 221 of the telescopic drive member 22. The two sliding grooves 2141 extend in the front-rear direction and are spaced apart in the left-right direction to limit the sliding direction of the sliding plates 217, thereby guiding the impact direction of the impactor 23 and ensuring the stability and accuracy of the impactor 23 during the impact process.

[0034] In one embodiment, the guide assembly further includes a guide seat 218 and a guide rod 219. The guide seat 218 is connected to the housing 21 and located at the connection port 212. The guide seat 218 has a through hole for the output shaft 221 to pass through. The guide rod 219 is connected to the guide seat 218 and extends along a first direction. The mounting part 232 has a guide hole 2181 for the guide rod 219 to pass through.

[0035] Please see Figure 2 The guide seat 218 is fixedly connected to the housing 21, and the guide rod 219 is connected to the guide seat 218. The output shaft 221 passes through the through hole and is connected to the mounting part 232. When the output shaft 221 extends or retracts in the first direction, the output shaft 221 drives the mounting part 232 to move relative to the guide seat 218. The guide rod 219 passes through the guide hole 2181 of the mounting part 232, so that the guide rod 219 provides guidance to the mounting part 232 during the movement of the mounting part 232, thereby further improving the stability and accuracy of the impact member 23 during the impact process.

[0036] In one embodiment, there are two guide rods 219, which are located on both sides of the output shaft 221. The mounting part 232 has two guide holes 2181, which correspond one-to-one with the two guide rods 219.

[0037] Furthermore, the impact part 231 is connected to the middle of the mounting part 232. Two guide holes 2181 are respectively opened on the left and right sides of the mounting part 232. Two guide rods 219 are respectively inserted into the corresponding guide holes 2181. The two guide rods 219 are respectively located on both sides of the output shaft 221. The two guide rods 219 cooperate with the corresponding guide holes 2181 to restrict the movement of the impact member 23 in the left and right directions, thereby further ensuring the accurate transmission of impact force and the accurate positioning of the impact member 23.

[0038] In one embodiment, the detection mechanism 30 further includes a stroke sensor 32, which is connected to either side plate 214 and faces the sliding plate 217 on the same side and is used to obtain the sliding stroke of the sliding plate 217.

[0039] It should be noted that the two side plates 214 are slidably engaged with the two sliding plates 217 respectively. The stroke sensor 32 is connected to one of the side plates 214 and is used to obtain the sliding stroke of the sliding plate 217 that is slidably engaged with the side plate 214, that is, the impact stroke of the impact member 23, so as to detect the impact state of the impact member 23 and ensure that each impact hits the stud according to the preset stroke and impact force, thereby improving the accuracy of the impact mechanism 20.

[0040] In one embodiment, the housing 21 further includes a bottom plate 215 and two protective plates 216. The two sides of the bottom plate 215 are respectively connected to the lower part of the two side plates 214, and the two protective plates 216 are respectively connected to the upper part of the two side plates 214. A moving channel for the telescopic drive member 22 to pass through is formed between the two protective plates 216. The bottom plate 215, the two side plates 214 and the two protective plates 216 together enclose and form a receiving cavity 211.

[0041] Understandably, the base plate 215 is connected to the two side plates 214 on both sides, providing a solid bottom support for the housing 21 and ensuring its stability. Two protective plates 216 are connected to the two side plates 214 on top, forming a moving channel through which the telescopic drive component 22 passes, thus protecting the telescopic drive component 22 while allowing it to extend and retract freely, ensuring the normal operation of the impact mechanism 20. The base plate 215, the two side plates 214, and the two protective plates 216 together form a cavity 211, providing a closed working space for the telescopic drive component 22, preventing debris generated by stud impact from affecting its operation, thereby improving the performance and service life of the detection device.

[0042] In one embodiment, the visual inspection component 31 includes a bracket 312 and a camera 311. The bracket 312 is connected to the housing 21, and the camera 311 is mounted on the bracket 312 and located below the impact member 23. The camera 311 is used to capture and acquire image information of the stud.

[0043] Understandably, by mounting a bracket 312 on the housing 21 and fixing a camera 311 on the bracket 312, positioning the camera 311 below the impact member 23 and directly aimed at the stud, the camera 311 can capture the state of the stud before and after the impact. By comparing the images before and after the impact, the deformation of the stud caused by the impact can be analyzed, thereby assessing the welding strength. Understandably, the camera 311 and the pressure sensor can also be communicatively connected to an external processing device, enabling the external processing device to automatically detect the welding strength of the stud using the image information acquired by the camera 311 and the impact force information acquired by the pressure sensor. The camera 311, pressure sensor, external processing device, and their communication connection methods all employ existing technologies.

[0044] In one embodiment, the telescopic drive component 22 is a cylinder, and the robotic arm 10 is equipped with a solenoid valve 40 and an air pipe. The solenoid valve 40 is connected to the cylinder through the air pipe, and a pressure switch 41, a pressure regulating valve 42, and a pressure gauge 43 are spaced apart on the air pipe.

[0045] Please see Figure 3 The robotic arm 10 is equipped with a solenoid valve 40 and an air pipe. The solenoid valve 40 is connected to the cylinder via the air pipe to control the extension and retraction of the cylinder. A pressure switch 41, a pressure regulating valve 42, and a pressure gauge 43 are spaced along the air pipe. The pressure switch 41 detects the air pressure in the pneumatic system to ensure the system operates under safe and effective pressure. The pressure regulating valve 42 adjusts the air pressure to control the extension and retraction speed and force of the cylinder, thereby adjusting the impact force of the impactor 23. The pressure gauge 43 monitors the air pressure in the pneumatic system in real time, providing intuitive pressure feedback. By installing the solenoid valve 40 and air pipe on the robotic arm 10, and by installing the pressure switch 41, pressure regulating valve 42, and pressure gauge 43 on the air pipe, precise control of the cylinder-driven impact mechanism 20 is achieved, thereby improving the automation and accuracy of the detection process.

[0046] In one embodiment, a thrust display 44 is also mounted on the robotic arm 10, and the thrust display 44 is communicatively connected to a pressure sensor.

[0047] Furthermore, the thrust display 44 is communicatively connected to a pressure sensor. The pressure sensor measures the force applied by the impactor 23 when it impacts the stud and transmits this data to the thrust display 44 to monitor the impact force applied to the stud in real time. This ensures consistency in the testing process and improves the accuracy of stud welding strength testing. It should be noted that the solenoid valve 40, air pipe, air pressure switch 41, air pressure regulating valve 42, air pressure gauge 43, and thrust display 44 all utilize existing technologies.

[0048] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A device for testing the welding strength of vehicle body studs, characterized in that, include: robotic arm; An impact mechanism is provided, comprising a housing, a telescopic drive, and an impact member. The housing is connected to the end of the robotic arm, and a receiving cavity is formed inside the housing. A connection port is provided on one side of the housing along a first direction, and the connection port communicates with the receiving cavity. The telescopic drive is located inside the receiving cavity, and the output shaft of the telescopic drive passes through the connection port and is connected to the impact member. The output shaft can extend and retract along the first direction to drive the impact member to impact or move away from the stud along the first direction. The detection mechanism includes a vision detection component and a pressure sensor. The vision detection component is used to acquire image information of the stud, and the pressure sensor is connected to the impact member and is used to acquire the impact force of the impact member hitting the stud.

2. The vehicle body stud welding strength testing device as described in claim 1, characterized in that, The housing includes a connecting plate and two side plates, which are respectively connected to the two ends of the connecting plate. The connecting plate and the two side plates enclose the receiving cavity. The side of the connecting plate opposite to the receiving cavity is connected to the end of the robotic arm. The telescopic drive is fixed to the side of the connecting plate facing the receiving cavity.

3. The vehicle body stud welding strength testing device as described in claim 2, characterized in that, The impact member includes an impact part and a mounting part. Each of the side plates is provided with a sliding groove along the first direction. The impact mechanism also includes a guide assembly, which includes two sliding plates. The two sliding plates are slidably engaged with the two sliding grooves of the two side plates, and the two sliding plates are respectively connected to both sides of the mounting part. The output shaft is connected to the mounting part. The telescopic drive member can drive the impact part, the mounting part, and the two sliding plates to move along the first direction through the output shaft, and impact or move away from the stud through the impact part.

4. The vehicle body stud welding strength testing device as described in claim 3, characterized in that, The guide assembly further includes a guide seat and a guide rod. The guide seat is connected to the housing and located at the connection port. The guide seat has a through hole for the output shaft to pass through. The guide rod is connected to the guide seat and extends along the first direction. The mounting part has a guide hole for the guide rod to pass through.

5. The vehicle body stud welding strength testing device as described in claim 4, characterized in that, The number of guide rods is two, and the two guide rods are respectively located on both sides of the output shaft. The mounting part has two guide holes, and the two guide holes correspond one-to-one with the two guide rods.

6. The vehicle body stud welding strength testing device as described in claim 3, characterized in that, The detection mechanism further includes a stroke sensor connected to any of the side plates, the stroke sensor facing the sliding plate on the same side and used to obtain the sliding stroke of the sliding plate.

7. The vehicle body stud welding strength testing device as described in claim 2, characterized in that, The housing also includes a bottom plate and two protective plates. The bottom plate is connected to the bottom of the two side plates on both sides, and the two protective plates are connected to the top of the two side plates. A moving channel is formed between the two protective plates for the telescopic drive member to pass through. The bottom plate, the two side plates and the two protective plates together enclose the accommodating cavity.

8. The vehicle body stud welding strength testing device as described in any one of claims 1 to 7, characterized in that, The visual inspection component includes a bracket and a camera. The bracket is connected to the housing, and the camera is mounted on the bracket and located below the impact member. The camera is used to capture image information of the stud.

9. The vehicle body stud welding strength testing device as described in any one of claims 1 to 7, characterized in that, The telescopic drive component is a cylinder. The robotic arm is equipped with a solenoid valve and an air pipe. The solenoid valve is connected to the cylinder through the air pipe. The air pipe is equipped with a pressure switch, a pressure regulating valve, and a pressure gauge at intervals.

10. The vehicle body stud welding strength testing device as described in claim 9, characterized in that, The robotic arm is also equipped with a thrust display, which is communicatively connected to the pressure sensor.

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