Ultrasonic detection device for welding penetration depth of automobile metal plate

Abstract

The invention relates to the technical field of sheet metal welding, and provides an automobile sheet metal welding penetration ultrasonic detection device which comprises a workbench and a support installed on the top of the workbench. And a feeding mechanism is arranged in the workbench, a limiting mechanism is installed at the top end of the workbench, a second lead screw is installed in the support, the second lead screw is sleeved with a sliding base, and an ultrasonic probe is installed at the bottom end of the sliding base. The feeding mechanisms are arranged, the two feeding mechanisms work alternately, when one feeding mechanism is located in a detection area, the other feeding mechanism is located on the outermost side of the workbench, after detection is completed, the middle feeding mechanism moves to the outermost side, and the feeding mechanism on the outermost side moves to a monitoring area; during repeated left-right translation, materials are rapidly changed, sheet metal materials are rapidly loaded and unloaded, non-detection time is shortened, efficiency is improved, labor and material waste is reduced, and comprehensive cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal welding, and in particular to an ultrasonic detection device for the penetration depth of automobile sheet metal welding. Background Art

[0002] The automotive sheet metal weld penetration ultrasonic testing device utilizes ultrasonic technology to perform nondestructive testing of the internal structure of welded joints. Its core principle is to transmit high-frequency ultrasonic pulses into the material being tested. The device then analyzes the echo signal characteristics, such as time, amplitude, and waveform, based on the reflection, scattering, or attenuation caused by the ultrasonic waves' interaction with defects or interfaces within the material. This allows for quantitative or qualitative assessment of weld penetration, weld quality, and internal defects.

[0003] Traditional ultrasonic detection devices for automotive sheet metal welding penetration depth need to shut down after completing the current workpiece inspection due to the lack of a rapid material change mechanism. The inspection process can only be restarted after the unloading and loading processes are completed. This reduces the effective operating time of the equipment and becomes a key bottleneck restricting the overall inspection efficiency. Moreover, as high-value equipment, the ultrasonic detection device cannot continue to perform its core functions due to shutdown due to material change, which reduces the return on investment. At the same time, the equipment still needs to remain in standby mode during the shutdown period, such as power supply and cooling system operation, which further increases energy consumption costs. Summary of the Invention

[0004] The purpose of the present invention is to provide an ultrasonic detection device for the penetration depth of automobile sheet metal welding, so as to solve the defect of low production efficiency of the existing ultrasonic detection device for the penetration depth of automobile sheet metal welding.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an ultrasonic detection device for the penetration depth of automobile sheet metal welding, comprising a workbench and a bracket installed on the top thereof; a feeding mechanism is provided inside the workbench, a limiting mechanism is installed on the top of the workbench, a second screw rod is installed inside the bracket, and a slide is sleeved on the outside of the second screw rod, and an ultrasonic probe is installed on the bottom end of the slide; the feeding mechanism comprises a first screw rod installed inside the workbench, and slides are sleeved on both sides of the first screw rod, a feeding table is fixed on the top of the slide, and support plates are provided on both sides of the feeding table, and a stop block is fixed on the top of the workbench at the bottom of the support plate.

[0006] Preferably, the limiting mechanism includes platforms arranged at both ends of the top of the workbench, and slide rails are installed on both sides of the bottom of the platform. The platforms are symmetrically distributed about the center line of the workbench, and the bottom ends of the platforms are connected to connecting plates.

[0007] Preferably, adjustment grooves are provided on both sides of the platform, and connecting columns are installed inside the adjustment grooves. A sliding structure is formed between the connecting columns and the adjustment grooves, and anti-slip strips are provided on the top and bottom of the adjustment grooves.

[0008] Preferably, the top ends of the connecting posts are each rotatably mounted with a limit plate, and the limit plate is in a right-angled shape. Connecting plates are rotatably mounted at both ends of the limit plate. A connecting block is fixed to the middle of the connecting posts, and a second spring is mounted on the top end of each connecting block. The second spring is connected to the limit plate at one end away from the connecting block. When the limit plate is separated from the sheet metal material, the second spring drives the limit plate to return to its original position, ready to clamp the sheet metal again.

[0009] Preferably, a fixing block is provided at the bottom of each of the connecting columns, and a sliding structure is formed between the fixing block and the connecting column, and a first spring is sleeved on the bottom of each of the fixing blocks.

[0010] Preferably, a support shaft is installed in the center of the connecting plate, and the support shaft is connected to the top of the workbench. The connecting plate and the connecting rod are rotatably connected. Connecting rods are hinged on both sides of the connecting plate, and the end of the connecting rod away from the connecting plate is connected to the bottom of the platform.

[0011] Preferably, the feeding platform is symmetrically distributed about the center line of the workbench, the first screw rod and the slide are threadedly connected, and third springs are installed at the bottom of both ends of the support plate.

[0012] Preferably, supporting feet are fixed at both ends of the bottom of the support plate, and the opposite end of the supporting feet is obliquely angled, and the opposite side of the supporting feet is installed with a protrusion.

[0013] Preferably, the end of the protrusion close to the support leg is beveled, and the relative inclination arcs of the support leg and the protrusion match each other, the two sides of the opposite end of the protrusion are conical, and the end of the stop block close to the protrusion is conical, and the conical arcs of the protrusion and the stop block match each other.

[0014] Preferably, a sleeve is fixed to the bottom of the slide seat, and a screw is installed at the bottom of the sleeve, and the screw and the sleeve are threadedly connected.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the ultrasonic detection device for automobile sheet metal welding penetration can realize rapid material replacement through two sets of feeding mechanisms when the detection is completed, thereby shortening downtime and improving detection efficiency. Moreover, through the cooperation of components such as the limit plate, the sheet metal material is automatically centered while being limited, achieving a positioning effect. At the same time, the limit spacing can be adjusted according to the size of the sheet metal part.

[0016] 1. The feeding mechanism is provided with two groups, which work alternately. When one group of feeding mechanisms is in the detection area, the other group of feeding mechanisms is at the outermost side of the workbench. When the detection is completed, the middle feeding mechanism moves to the outermost side, and the outermost feeding mechanism moves to the monitoring area. During the repeated left and right translation, the material is quickly changed, and the sheet metal material is quickly loaded and unloaded, which reduces non-detection time, improves efficiency, reduces labor and material waste, and reduces overall costs.

[0017] 2. By setting a limit mechanism, the platform is equipped with two groups. The relative displacement of the platform drives the limit plate to squeeze and limit the sheet metal material. Due to the special right-angle shape design of the limit plate, it can be automatically centered when flipping when limiting the material, eliminating the need for careful adjustment by the staff, reducing the difficulty of operation and improving the accuracy and stability of fixed clamping;

[0018] Furthermore, adjustment slots are provided on both sides of the platform, and the connecting columns can slide along the adjustment slots to achieve adjustment according to the size of the sheet metal material, so that the detection device can be applied to sheet metal parts of various sizes, thereby improving the flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the workbench of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the stent of the present invention in a cutaway state;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the workbench of the present invention in a cutaway state;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the connecting plate of the present invention when viewed from above;

[0025] Figure 7 Schematic diagram of the three-dimensional structure of the platform of the present invention;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the connecting column of the present invention;

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the support plate of the present invention.

[0028] Explanation of the reference numerals in the figure: 1. workbench; 2. limiting mechanism; 21. platform; 22. connecting column; 221. limiting plate; 222. connecting block; 223. connecting disk; 224. fixing block; 225. first spring; 226. second spring; 23. slide rail; 24. connecting plate; 241. connecting rod; 242. supporting shaft; 25. adjusting slot; 26. anti-slip strip; 3. feeding mechanism; 31. feeding platform; 32. first screw rod; 33. slide; 34. support plate; 341. support foot; 342. third spring; 343. bump; 35. stop block; 4. bracket; 5. second screw rod; 6. slide; 61. sleeve; 62. screw; 7. ultrasonic probe. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] See also Figures 1-9 The present invention provides an ultrasonic detection device for the penetration depth of automobile sheet metal welding, which includes a workbench 1 and a bracket 4 installed on the top thereof; a feeding mechanism 3 is provided inside the workbench 1, and a limiting mechanism 2 is installed on the top of the workbench 1; the feeding mechanism 3 includes a first screw rod 32 installed inside the workbench 1, and both sides of the first screw rod 32 are sleeved with slides 33, and a feeding platform 31 is fixed to the top of the slide 33, and support plates 34 are provided on both sides of the feeding platform 31, and a stop block 35 is fixed to the top of the workbench 1 at the bottom of the support plate 34, and the feeding platform 31 is symmetrically distributed about the center line of the workbench 1 The first screw rod 32 and the slide 33 are threadedly connected, and a third spring 342 is installed at the bottom of both ends of the support plate 34. Support feet 341 are fixed at both ends of the bottom of the support plate 34, and the support feet 341 are beveled at one end relative to each other, and a protrusion 343 is installed on the opposite side of the support feet 341. The protrusion 343 is beveled at one end close to the support feet 341, and the relative inclination angle of the support feet 341 and the protrusion 343 is consistent. The two sides of the opposite end of the protrusion 343 are tapered, and the end of the stop block 35 close to the protrusion 343 is tapered, and the tapered arc of the protrusion 343 and the stop block 35 are consistent;

[0031] Reference Figure 1 、 Figure 2 、 Figure 4 and Figure 9As shown, when the device is in use, the sheet metal material is placed on the top of the feeding mechanism 3 on the outside, the coupling agent is evenly applied to the welding area, and then the servo motor on one side of the first screw rod 32 is started to rotate, driving the first screw rod 32 to rotate synchronously, so that the slide 33 threadedly connected thereto drives the feeding table 31 to slide to one side. Because two sets of slides 33 are provided on the outside of the first screw rod 32, the two sets of feeding tables 31 are simultaneously translated to the left, and the feeding table 31 on the right is moved to the middle position monitoring area of ​​the feeding table 31. In the process of moving and transporting the sheet metal material, because the support plate 34 is higher than the platform 21, the sheet metal material can be stably transported to the middle position of the platform 21 during translation. When it moves to the middle position, the protrusion 343 at the bottom of the support plate 34 first contacts the stop block 35. Due to the conical design between them, the sheet metal material can be transported stably to the middle position of the platform 21 during translation. The support plate 34 is pressed against the top of the workbench 34 and the support plate 34 is pressed against the bottom of the workbench 34.

[0032] The limiting mechanism 2 includes a platform 21 provided at both ends of the top of the workbench 1, and slide rails 23 are installed on both sides of the bottom of the platform 21. The platform 21 is symmetrically distributed about the center line of the workbench 1. The bottom end of the platform 21 is connected to a connecting plate 24. Adjustment slots 25 are provided on both sides of the platform 21, and connecting columns 22 are installed inside the adjusting slots 25. The top of the connecting column 22 is rotatably installed with a limiting plate 221, and the limiting plate 221 is in a right-angle shape. Connecting disks 223 are rotatably installed at both ends of the limiting plate 221. , a connecting block 222 is fixed in the middle position of the connecting column 22, and a second spring 226 is installed on the top of the connecting block 222, and the end of the second spring 226 away from the connecting block 222 is connected to the limit plate 221, a support shaft 242 is installed in the center of the connecting plate 24, and the support shaft 242 is connected to the top of the workbench 1, the connecting plate 24 and the connecting rod 241 are rotatably connected, and the connecting rod 241 is hinged on both sides of the connecting plate 24, and the end of the connecting rod 241 away from the connecting plate 24 is connected to the bottom of the platform 21;

[0033] Reference Figure 4-Figure 6As shown, after the sheet metal material is placed on the top of the platform 21, the cylinder at the bottom of the platform 21 is started, pushing the platform 21 to move horizontally along the slide rail 23 to the middle position. The horizontal movement of one group of platforms 21 drives the connecting rod 241 to push the connecting plate 24 to rotate around the support shaft 242, so that the connecting rod 241 on the other side of the connecting plate 24 pulls the other group of platforms 21 to move inward at the same time, and the two ends of the sheet metal material continue to approach the limiting plate 221. The first contact is the inner connecting disk 223. When the connecting disk 223 contacts the material and is squeezed, because the limiting plate 221 is in a right-angle shape, the limiting plate 221 rotates inward during the continuous squeezing process, firmly squeezing and fixing the corner of the material, and automatically centering the material, and the connecting disk 223 is rotatably connected to the limiting plate 221, so that the friction force is reduced when the connecting disk 223 contacts the material.

[0034] A sliding structure is formed between the connecting column 22 and the adjustment slot 25. Anti-slip strips 26 are provided at the top and bottom of the adjustment slot 25. A fixing block 224 is provided at the bottom of the connecting column 22. A sliding structure is formed between the fixing block 224 and the connecting column 22. A first spring 225 is sleeved on the bottom of the fixing block 224.

[0035] Reference Figure 7 and Figure 8 As shown, when it is necessary to adjust the clamping distance according to the size of the sheet metal material, there are dial blocks on both sides of the fixing block 224. The dial block is pressed by the finger to drive the fixing block 224 to move downward, and then the limit plate 221 is pulled to drive the connecting column 22 to slide along the adjustment slot 25. When the displacement reaches the size of the appropriate material, the fixing block 224 is released and the fixing block 224 is reset under the action of the rebound force of the first spring 225, squeezing the edge of the adjustment slot 25 so that the connecting column 22 and the adjustment slot 25 are fixed. At the same time, anti-slip strips 26 are provided on the edges of the adjustment slot 25, and anti-slip strips 26 are provided on the top of the fixing block 224 and the bottom of the connecting block 222, which can effectively enhance the fixing effect of the fixing block 224 on the connecting column 22 to avoid sliding.

[0036] A second screw rod 5 is installed inside the bracket 4, and a slide 6 is sleeved on the outside of the second screw rod 5. An ultrasonic probe 7 is installed at the bottom of the slide 6. A sleeve 61 is fixed to the bottom of the slide 6, and a screw rod 62 is installed at the bottom of the sleeve 61. The screw rod 62 and the sleeve 61 are threadedly connected;

[0037] Reference Figure 1 and Figure 3As shown, when the sheet metal material is limited and fixed, the rotating screw 62 is threadedly connected to the sleeve 61, and drives the ultrasonic probe 7 to move downward during rotation until it contacts the welding area on the surface of the material, and starts the servo motor on one side of the second screw 5 to rotate, driving the slide 6 to move to one side, so that the ultrasonic probe 7 scans and inspects along the welding direction, records the ultrasonic echo signal, especially the signal characteristics of the penetration depth area, filters, amplifies, and digitizes the echo signal, extracts characteristic parameters such as time, amplitude, and phase, and calculates the penetration depth, defect position and size through an algorithm.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultrasonic detection device for detecting the penetration depth of automobile sheet metal welding, comprising a workbench (1) and a bracket (4) mounted on the top thereof; Its characteristics are: A feeding mechanism (3) is provided inside the workbench (1), a limiting mechanism (2) is installed on the top of the workbench (1), a second screw rod (5) is installed inside the bracket (4), and a slide seat (6) is sleeved on the outside of the second screw rod (5), and an ultrasonic probe (7) is installed on the bottom end of the slide seat (6); The feeding mechanism (3) comprises a first screw rod (32) installed inside the workbench (1), and slides (33) are sleeved on both sides of the first screw rod (32), a feeding platform (31) is fixed on the top of the slide (33), and support plates (34) are provided on both sides of the feeding platform (31), and a stop block (35) is fixed on the top of the workbench (1) at the bottom of the support plate (34).

2. The ultrasonic detection device for welding penetration of automobile sheet metal according to claim 1, characterized in that: The limiting mechanism (2) comprises platforms (21) arranged at both ends of the top of the workbench (1), and slide rails (23) are installed on both sides of the bottom end of the platform (21), the platforms (21) are symmetrically distributed about the center line of the workbench (1), and the bottom end of the platform (21) is connected to a connecting plate (24).

3. The ultrasonic detection device for welding penetration of automobile sheet metal according to claim 2, characterized in that: Adjustment grooves (25) are provided on both sides of the platform (21), and connecting columns (22) are installed inside the adjustment grooves (25). A sliding structure is formed between the connecting columns (22) and the adjustment grooves (25), and anti-slip strips (26) are provided on the top and bottom of the adjustment grooves (25).

4. The ultrasonic detection device for welding penetration of automobile sheet metal according to claim 3, characterized in that: The top end of each connecting column (22) is rotatably mounted with a limiting plate (221), and the limiting plate (221) is in a right-angled shape. Both ends of the limiting plate (221) are rotatably mounted with connecting disks (223). A connecting block (222) is fixed at the middle position of each connecting column (22), and a second spring (226) is mounted at the top end of each connecting block (222). The second spring (226) is connected to the limiting plate (221) at one end away from the connecting block (222).

5. The ultrasonic detection device for welding penetration of automobile sheet metal according to claim 3, characterized in that: The bottom of each connecting column (22) is provided with a fixed block (224), and a sliding structure is formed between the fixed block (224) and the connecting column (22), and the bottom of each fixing block (224) is sleeved with a first spring (225).

6. The ultrasonic detection device for automobile sheet metal welding penetration according to claim 2, characterized in that: A support shaft (242) is installed at the center of the connecting plate (24), and the support shaft (242) is connected to the top of the workbench (1). The connecting plate (24) and the connecting rod (241) are rotatably connected. The connecting rods (241) are hinged on both sides of the connecting plate (24), and the end of the connecting rod (241) away from the connecting plate (24) is connected to the bottom of the platform (21).

7. The ultrasonic detection device for automobile sheet metal welding penetration according to claim 1, characterized in that: The feeding platform (31) is symmetrically distributed about the center line of the workbench (1), the first screw rod (32) and the slide (33) are threadedly connected, and third springs (342) are installed at the bottoms of both ends of the support plate (34).

8. The ultrasonic detection device for welding penetration of automobile sheet metal according to claim 1, characterized in that: Support legs (341) are fixed at both ends of the bottom of the support plate (34), and the opposite end of the support leg (341) is in an oblique angle shape, and the opposite side of the support leg (341) is installed with a protrusion (343).

9. The ultrasonic detection device for automobile sheet metal welding penetration according to claim 8, characterized in that: The end of the protrusion (343) close to the support leg (341) is in an oblique angle shape, and the relative inclination arcs of the support leg (341) and the protrusion (343) are consistent. The two sides of the opposite end of the protrusion (343) are both conical. The end of the stop block (35) close to the protrusion (343) is also conical, and the conical arcs of the protrusion (343) and the stop block (35) are consistent.

10. The ultrasonic detection device for automobile sheet metal welding penetration according to claim 1, characterized in that: A sleeve (61) is fixed to the bottom of the slide seat (6), and a screw rod (62) is installed at the bottom of the sleeve (61), and the screw rod (62) and the sleeve (61) are threadedly connected.

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