A high-precision welding positioning device for asymmetric automotive parts

Abstract

The present invention relates to the technical field of welding positioning devices, specifically a high-precision welding positioning device for asymmetric automobile parts, comprising a base and an automobile part body, and further comprising two positioning frames and a rotatable functional rotating frame. The bottom surfaces of the two positioning frames and the functional rotating frame are connected to a multi-section curved arm part, and a corner frame is rotatably mounted on the positioning frame, and two symmetrically arranged clamping frames are slidably connected to the corner frame. The beneficial effect of the present invention is that in the present invention, the spatial layout positions and spatial layout angles of the two positioning frames and the functional rotating frame can be adjusted independently. By realizing the independent adjustment function of the positions and angles of the positioning frames and the functional rotating frames, the present device is suitable for high-precision welding positioning operations of asymmetric automobile parts, and the present device can play an effect of strengthening positioning, dual-effect detection of welds and auxiliary calibration of weld points during welding operations.

Description

Technical Field

[0001] The invention relates to the technical field of welding positioning devices, in particular to a high-precision welding positioning device for asymmetric automobile parts. Background Art

[0002] During the manufacturing process of automobiles, welding is required on local positions of multiple automobile parts. Therefore, a positioning device is required to position the parts to be processed when using high-precision welding equipment. The shapes of automobile parts to be processed are mostly asymmetric structures. The positioning devices of high-precision welding equipment in the prior art only play a simple positioning role and cannot fully position according to the edges of automobile parts.

[0003] In the prior art, the patent document with publication number CN211991572U discloses a positioning device for high-precision welding equipment of asymmetric automotive parts, including two sets of positioning mechanisms, which are symmetrically arranged on the left and right. The welding head can be placed between the two sets of positioning mechanisms. The positioning mechanism includes a fixed plate, multiple limit plate structures, multiple spring-pressing mechanisms and multiple positioning rod structures that can position automotive parts. The above device can realize the positioning and pressing of asymmetric positions of automotive parts.

[0004] However, when the above-mentioned device is used, on the one hand, the clamping area of ​​the clamping mechanism cannot be conveniently adjusted during welding positioning, and on the other hand, it is not convenient to perform contour clamping and contour positioning operations on asymmetric automobile parts. Moreover, when the existing positioning device is working, it is not convenient to achieve enhanced positioning of automobile parts, dual-effect detection of welds and auxiliary calibration of weld points. Based on this, the present invention provides a high-precision welding positioning device for asymmetric automobile parts to solve the problems raised in the above-mentioned background technology. Summary of the Invention

[0005] The present invention aims to solve the technical problems existing in the prior art and provides a high-precision welding positioning device for asymmetric automobile parts to solve the problems that, when the existing device is used, on the one hand, the clamping area of ​​the clamping mechanism cannot be conveniently adjusted during welding positioning, and on the other hand, it is not convenient to perform contour clamping and contour positioning operations of asymmetric automobile parts. In addition, when the existing positioning device is working, it is not convenient to achieve enhanced positioning of automobile parts, dual-effect detection of welds and auxiliary calibration of weld points.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a high-precision welding positioning device for asymmetric automobile parts, comprising a base and an automobile part body, and also comprising two positioning frames and a rotatable functional rotating frame, the bottom surfaces of the two positioning frames and the functional rotating frame are connected to a multi-section crank arm component, a corner frame is rotatably installed on the positioning frame, and two symmetrically arranged clamping frames are slidably connected to the corner frame, the positioning frame is provided with a driving component for driving the corner frame to rotate and driving the clamping frame to move, two rollers are rotatably installed on the clamping frame, and two rollers are installed on the side of the clamping frame. A motor, the output shaft ends of the two motors are respectively fixedly connected to two rollers, a clamping belt for clamping the automobile component body is wound between the two rollers, a first linear transmission module is provided in the clamping frame, an extension frame is installed on the first linear transmission module for transmission, a guide wheel that fits the clamping belt is rotatably installed on the extension frame, an air clamping assembly is provided on the clamping belt, and four functional surfaces distributed in a circular array are provided on the functional rotating frame, and a welding point calibration module, a welding point detection unit, a clamping module and a sanding rod driven by a grinding motor are respectively installed on the four functional surfaces.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the multi-section crank arm component includes an electric rotator, the bottom surface of the electric rotator is fixedly connected to the base, the rotating surface of the electric rotator is installed with a turntable, the turntable is hinged with a first crank arm, the top of the first crank arm is hinged with a second crank arm, the end of the second crank arm is hinged with a third crank arm, a group of arm adjustment push rods are hinged between the first crank arm and the turntable, between the second crank arm and the first crank arm, and between the third crank arm and the second crank arm, a rotation motor is installed on the third crank arm, and the two positioning frames and the functional rotation frame are respectively driven by the rotation motors in the three multi-section crank arm components.

[0009] The beneficial effect of adopting the above further solution is that, when in use, the spatial layout positions and spatial layout angles of the two positioning frames and the functional rotating frame can be adjusted by arranging the electric rotator, the turntable, the first crank arm, the second crank arm, the third crank arm and the three sets of arm adjustment push rods in the multi-section crank arm component;

[0010] Specifically, the spatial layout positions and spatial layout angles of the two positioning frames and the functional rotating frame can be adjusted independently. By realizing the independent adjustment function of the positions and angles of the positioning frames and the functional rotating frame, the device is suitable for high-precision welding positioning operations of asymmetric automotive parts.

[0011] During welding operations, the angles of the two positioning frames can be adaptively adjusted to dynamically adjust the layout angle of the automobile component body during welding, thereby facilitating variable-angle welding of the automobile component body.

[0012] Furthermore, the driving component includes an angle-changing motor installed on the positioning frame, a rotating shaft is installed on the output shaft end of the angle-changing motor, the end of the rotating shaft is fixedly connected to the angle frame, a driven rotating frame is sleeved on the rotating shaft, a group of connecting rods are hinged between the driven rotating frame and the two clamping frames, a driving frame is rotatably sleeved on the driven rotating frame, a second linear transmission module is installed on the positioning frame, the second linear transmission module is transmission-connected to the driving frame, a guide rod is installed on the positioning frame, and the guide rod is slidingly connected to the driving frame.

[0013] The beneficial effect of adopting the above further solution is that when it is necessary to perform a clamping operation on the automobile component body, first, the length of the entrained belt paid out from the two rollers is adjusted according to the specific shape of the automobile component body and the clampable area. When the length of the entrained belt paid out from the two rollers is adjusted, the position and angle of the extension frame relative to the clamping frame can be adjusted by driving the first linear transmission module. By adjusting the position and angle of the extension frame relative to the clamping frame, the position of the guide wheel can be adjusted and the length of the entrained belt paid out can be adjusted. By adjusting the length of the entrained belt paid out, the clamping area, clamping tightness and strength of the device on the automobile component body can be finally adjusted.

[0014] By adjusting the clamping area of ​​the automobile part body, the device can be applied to the clamping operation of automobile parts of different specifications.

[0015] The angle of the rotating shaft is adjustable, so that when the device clamps the automobile component body, it can act on the clampable or positionable parts at different angles on the automobile component body;

[0016] Furthermore, two transmission guide bars are installed on the rotating shaft, and two transmission guide grooves are opened inside the driven rotating frame, and the two transmission guide grooves are respectively slidably connected to the two transmission guide bars.

[0017] The beneficial effect of adopting the above further solution is that when the rotating shaft rotates, the transmission guide bars and the transmission guide grooves are arranged so that the rotating shaft can rotate synchronously with the driven rotating rack when the position of the driven rotating rack is adjusted.

[0018] Furthermore, the air clamp assembly includes a clamping bag belt installed on the clamping belt, the clamping bag belt is made of silicone, an air cavity is opened inside the clamping bag belt, an air pump is installed on the side of the clamping frame, a cavity is fixedly opened inside the roller, the cavity is connected to the air cavity, the port of the air pump is connected to the cavity through an air pipe, an air pressure probe is installed on the air pipe, a single-chip microcomputer is installed on the base, and the data end of the air pressure probe is connected to the data of the single-chip microcomputer.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that when the entrainment belt acts on the automobile component body, the air pump inflates the interior of the clamping bag belt with sufficient air until the feedback value of the air pressure probe reaches the set threshold value. When the feedback value of the air pressure probe reaches the set threshold value, the entrainment belt and the clamping bag belt can fully fit with the automobile component body and achieve a contour clamping effect on the automobile component body. At the same time, through the inflation structure setting of the clamping bag belt, a contour clamping effect can be achieved on each clampable part on the automobile component body, thereby improving the scope of application of this device.

[0020] Furthermore, the welding point calibration module includes two third linear transmission modules, each of the two third linear transmission modules is connected to a calibration seat, each of the two calibration seats is installed with a calibration push rod, and each end of the two calibration push rods is installed with a calibration frame, and the calibration frame is an inverted "U"-shaped structure. The transmission direction of the third linear transmission module is perpendicular to the axis of the calibration push rod, and the axes of the third linear transmission module and the calibration push rod are both perpendicular to the rotation axis of the functional rotating frame.

[0021] The beneficial effect of adopting the above-mentioned further scheme is that when welding is required, and after the two positioning frames have positioned the automobile component body on both sides, the two calibration frames can be set to adjust the crimping seam of the parts to be welded on the automobile component body or the welding angle or drive the two parts to be welded to be forced to align the seams, thereby playing a role in precise positioning of the welding position during welding. Moreover, the two calibration frames can be set to forcefully squeeze and reset the deformed parts of the parts to be welded on the automobile component body, thereby playing a role in auxiliary deformation and deformation compensation of the automobile component body during welding. After welding is completed, the welding position can be sanded by setting the sanding rod. After sanding, it is convenient for visual and ultrasonic inspection of the automobile component body after welding.

[0022] Furthermore, the clamping module includes a clamping screw rotatably connected to the functional rotating frame, a clamping motor is installed on the functional rotating frame, the output shaft end of the clamping motor is fixedly connected to the clamping screw, and the clamping screw is symmetrically provided with a positive thread portion and a negative thread portion, and the positive thread portion and the negative thread portion are both transmission-connected with a clamp, and the axis of the clamping screw is perpendicular to the rotation axis of the functional rotating frame.

[0023] The beneficial effect of adopting the above further solution is that after the automobile component body is positioned on both sides or at two points, the setting of the clamping module can enhance the positioning effect during welding of the automobile component body;

[0024] At the same time, before welding the automobile component body, the clamping module can be set to calibrate the sheet metal or forcibly reset the deformation of the designated welding part of the automobile component body.

[0025] Furthermore, the clamping module further includes a transfer support plate, which is disposed adjacent to the functional transfer frame and is fixed on a third crank arm at a corresponding position.

[0026] The beneficial effect of adopting the above-mentioned further scheme is that, when loading, the automobile component body is placed on the transfer pallet. After the automobile component body is placed on the transfer pallet, the two positioning frames are adjusted in spatial position and angle, so as to facilitate the clamping of the automobile component body from the transfer pallet. When the automobile component body is processed, the processed automobile component body can be placed on the transfer pallet, which can then assist in the unloading of the automobile component body. When it is necessary to change the clamped part of the automobile component body, the automobile component body can be temporarily placed on the transfer pallet, which facilitates the adjustment of the clamped position of the automobile component body.

[0027] Furthermore, the solder joint detection unit includes an inspection seat installed on the functional rotating frame, on which a visual recognition probe and an ultrasonic flaw detection head are respectively installed. The single-chip microcomputer has a built-in image and ultrasonic analysis module, and the data ends of the visual recognition probe and the ultrasonic flaw detection head are both connected to the image and ultrasonic analysis module data.

[0028] The beneficial effect of adopting the above further scheme is that after the automobile component body is welded, the setting of the visual recognition probe can detect the welding effect of the weld point by image recognition, and the setting of the ultrasonic flaw detection head can detect the solidity of the weld point or weld by internal ultrasonic flaw detection, thereby realizing automatic dual-effect detection after the welding of the automobile component body is completed.

[0029] The beneficial effects of the present invention are:

[0030] 1) In the present invention, the spatial layout positions and spatial layout angles of the two positioning frames and the functional rotating frame can be adjusted independently. By realizing the independent adjustment functions of the positions and angles of the positioning frames and the functional rotating frame, the device is suitable for high-precision welding positioning operations of asymmetric automotive parts. During welding operations, the device can enhance positioning, dual-effect detection of welds, and auxiliary calibration of weld points, thereby effectively improving the functionality of the device.

[0031] 2) In the present invention, when welding is required and after the two positioning frames have positioned the automobile component body on both sides, the two calibration frames can be set to adjust the seam of the parts to be welded on the automobile component body or adjust the welding angle or drive the two parts to be welded to be forced to align, thereby playing a role in accurately positioning the welding position during welding. Moreover, the two calibration frames can be set to forcefully squeeze and reset the deformed parts of the parts to be welded on the automobile component body, thereby playing a role in auxiliary deformation and deformation compensation of the automobile component body during welding. After welding is completed, the welding position can be sanded by the setting of the sanding rod. After sanding, it is convenient for visual and ultrasonic inspection of the automobile component body after welding.

[0032] 3) In the present invention, after the entrainment belt acts on the automobile component body, the air pump inflates the interior of the clamping bag belt with sufficient air until the feedback value of the air pressure probe reaches the set threshold value. When the feedback value of the air pressure probe reaches the set threshold value, the entrainment belt and the clamping bag belt can fully fit the automobile component body and achieve a contour-like clamping effect on the automobile component body. At the same time, through the inflation structure setting of the clamping bag belt, a contour-like clamping effect can be achieved on various clampable parts on the automobile component body, thereby improving the scope of application of the present device.

[0033] 4) In the present invention, when it is necessary to perform a clamping operation on the automobile component body, first, the length of the belt released from the two rollers is adjusted according to the specific shape of the automobile component body and the clampable area. When the length of the belt released from the two rollers is adjusted, the position and angle of the extension frame relative to the clamping frame can be adjusted by driving the first linear transmission module. By adjusting the position and angle of the extension frame relative to the clamping frame, the position of the guide wheel can be adjusted and the length of the belt released can be adjusted. By adjusting the length of the belt released, the clamping area, clamping tightness and strength of the device on the automobile component body can be finally adjusted. By adjusting the clamping area of ​​the automobile component body, the device can be finally applied to clamping operations of automobile component bodies of different specifications. By adjusting the angle of the rotating shaft, the device can act on the clampable or positionable parts of the automobile component body at different angles when clamping the automobile component body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a high-precision welding positioning device for asymmetric automotive parts according to the present invention;

[0035] Figure 2 Schematic diagram of the structure of the second linear transmission module and the turntable of the present invention;

[0036] Figure 3 For the present invention Figure 2 Schematic diagram of the local enlarged structure at A in the middle;

[0037] Figure 4 This is a schematic structural diagram of the clamping bag belt and the motor of the present invention;

[0038] Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at B in the middle;

[0039] Figure 6 This is a schematic structural diagram of the arm adjustment push rod and the transfer support plate of the present invention;

[0040] Figure 7 Schematic diagram of the structure of the clamp and the third linear transmission module of the present invention;

[0041] Figure 8 For the present invention Figure 7 Structural diagram from another angle;

[0042] Figure 9 It is a structural schematic diagram of the automobile component body of the present invention.

[0043] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0044] 1. Base; 2. Automotive component body; 3. Positioning frame; 4. Functional rotating frame; 5. Corner frame; 6. Clamping frame; 7. Roller; 8. Motor; 9. Clamping belt; 10. First linear transmission module; 11. Extension frame; 12. Guide wheel; 13. Sanding rod; 14. Electric rotator; 15. Turntable; 16. First crank arm; 17. Second crank arm; 18. Third crank arm; 19. Adjusting arm push rod; 20. Indexing motor; 21. Angle variable Motor; 22. Rotary shaft; 23. Clamping bag belt; 24. Air pump; 25. Air pressure probe; 26. Single chip microcomputer; 27. Third linear transmission module; 28. Calibration seat; 29. ​​Calibration push rod; 30. Calibration frame; 31. Clamping screw; 32. Clamp; 33. Transfer tray; 34. Visual recognition probe; 35. Ultrasonic flaw detection head; 36. Second linear transmission module; 37. Connecting rod; 38. Driven rotating frame; 39. Drive frame. DETAILED DESCRIPTION

[0045] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0046] The present invention provides the following preferred embodiments

[0047] like Figures 1-9 As shown, a high-precision welding positioning device for asymmetric automobile parts includes a base 1 and an automobile part body 2, two positioning frames 3 and a rotatable functional rotating frame 4. The bottom surfaces of the two positioning frames 3 and the functional rotating frame 4 are connected to a multi-section crank arm component;

[0048] The multi-section crank arm component includes an electric rotator 14, the bottom surface of the electric rotator 14 is fixedly connected to the base 1, and a turntable 15 is installed on the rotating surface of the electric rotator 14. A first crank arm 16 is hinged on the turntable 15, and a second crank arm 17 is hinged on the top of the first crank arm 16. The end of the second crank arm 17 is hinged to the third crank arm 18. A group of arm adjustment push rods 19 are hinged between the first crank arm 16 and the turntable 15, between the second crank arm 17 and the first crank arm 16, and between the third crank arm 18 and the second crank arm 17. A rotation motor 20 is installed on the third crank arm 18. The two positioning frames 3 and the functional rotation frame 4 are respectively driven by the rotation motors 20 in the three multi-section crank arm components.

[0049] When in use, the spatial arrangement positions and spatial arrangement angles of the two positioning frames 3 and the functional rotating frame 4 are adjustable through the arrangement of the electric rotator 14, the turntable 15, the first crank arm 16, the second crank arm 17, the third crank arm 18 and the three sets of arm adjustment push rods 19 in the multi-section crank arm component;

[0050] Specifically, the spatial layout positions and spatial layout angles of the two positioning frames 3 and the functional rotating frame 4 can be adjusted independently. By realizing the independent adjustment function of the positions and angles of the positioning frames 3 and the functional rotating frame 4, the device is suitable for high-precision welding positioning operations of asymmetric automotive parts.

[0051] During welding, the angles of the two positioning frames 3 can be adaptively adjusted to dynamically adjust the layout angle of the automobile component body 2 during welding, thereby facilitating variable-angle welding of the automobile component body 2 .

[0052] The positioning frame 3 is rotatably mounted with a corner frame 5, and the corner frame 5 is slidably connected to two symmetrically arranged clamping frames 6. The positioning frame 3 is provided with a driving component for driving the corner frame 5 to rotate and driving the clamping frame 6 to move;

[0053] The driving component includes an angle-changing motor 21 mounted on the positioning frame 3. A swivel 22 is mounted on the output shaft end of the angle-changing motor 21. The end of the swivel 22 is fixedly connected to the angle frame 5. A driven turret 38 is sleeved on the swivel 22. A set of connecting rods 37 are hinged between the driven turret 38 and the two clamping frames 6.

[0054] Two transmission guide bars are installed on the rotating shaft 22, and two transmission guide grooves are provided inside the driven rotating frame 38. The two transmission guide grooves are respectively slidably connected to the two transmission guide bars.

[0055] When the rotating shaft 22 rotates, the transmission guide bars and the transmission guide grooves are arranged so that the rotating shaft 22 can rotate synchronously with the driven rotating rack 38 when the position of the driven rotating rack 38 is adjusted.

[0056] A driving frame 39 is rotatably sleeved on the driven rotating frame 38 , a second linear transmission module 36 is installed on the positioning frame 3 , the second linear transmission module 36 is transmission-connected to the driving frame 39 , a guide rod is installed on the positioning frame 3 , and the guide rod is slidingly connected to the driving frame 39 .

[0057] When the clamping operation of the automobile component body 2 is required, the length of the entrained belt 9 released from the two winding rollers 7 is first adjusted according to the specific shape of the automobile component body 2 and the clamping area. When the length of the entrained belt 9 released from the two winding rollers 7 is adjusted, the position and angle of the expansion frame 11 relative to the clamping frame 6 can be adjusted by driving the first linear transmission module 10. By adjusting the position and angle of the expansion frame 11 relative to the clamping frame 6, the position of the guide wheel 12 can be adjusted and the length of the entrained belt 9 can be adjusted. By adjusting the length of the entrained belt 9, the clamping area, clamping tightness and strength of the device on the automobile component body 2 can be finally adjusted.

[0058] By adjusting the clamping area of ​​the automobile component body 2, the device can be applied to the clamping operation of automobile component bodies 2 of different specifications.

[0059] The angle of the rotating shaft 22 is adjustable, so that when the device clamps the automobile component body 2, it can act on the clampable or positionable parts of the automobile component body 2 at different angles;

[0060] Two rollers 7 are rotatably mounted on the clamping frame 6. Two motors 8 are mounted on the side of the clamping frame 6. The output shaft ends of the two motors 8 are fixedly connected to the two rollers 7 respectively. A clamping belt 9 for clamping the automobile component body 2 is wound between the two rollers 7.

[0061] A first linear transmission module 10 is provided in the clamping frame 6, an extension frame 11 is installed on the first linear transmission module 10, a guide wheel 12 that fits the clamping belt 9 is rotatably installed on the extension frame 11, and an air clamp assembly is provided on the clamping belt 9;

[0062] The air clamp assembly includes a clamping bag belt 23 installed on the clamping belt 9. The clamping bag belt 23 is made of silicone. An air cavity is opened inside the clamping bag belt 23. An air pump 24 is installed on the side of the clamping frame 6. A cavity is fixedly opened inside a roller 7. The cavity is connected to the air cavity. The port of the air pump 24 is connected to the cavity through an air pipe. A pressure probe 25 is installed on the air pipe. A single-chip microcomputer 26 is installed on the base 1. The data end of the pressure probe 25 is connected to the data of the single-chip microcomputer 26.

[0063] When the entrainment belt 9 acts on the automobile component body 2, the air pump 24 inflates the interior of the clamping bag belt 23 with sufficient air until the feedback value of the air pressure probe 25 reaches the set threshold. When the feedback value of the air pressure probe 25 reaches the set threshold, the entrainment belt 9 and the clamping bag belt 23 can fully fit with the automobile component body 2 and achieve a contour clamping effect on the automobile component body 2. At the same time, through the inflation structure setting of the clamping bag belt 23, a contour clamping effect can be achieved on each clampable part on the automobile component body 2, thereby improving the scope of application of this device.

[0064] The functional rotating frame 4 is provided with four functional surfaces distributed in a circular array, and the four functional surfaces are respectively installed with a welding point calibration module, a welding point detection unit, a clamping module and a sanding rod 13 driven by a grinding motor.

[0065] The welding point calibration module includes two third linear transmission modules 27, each of which is transmission-connected to a calibration seat 28, each of which is equipped with a calibration push rod 29, and each of which has a calibration frame 30 installed at the end of each calibration push rod 29. The calibration frame 30 is an inverted "U"-shaped structure. The transmission direction of the third linear transmission module 27 is perpendicular to the axis of the calibration push rod 29, and the axes of the third linear transmission module 27 and the calibration push rod 29 are perpendicular to the rotation axis of the functional rotating frame 4.

[0066] When welding is required, and after the two positioning frames 3 have positioned the automobile component body 2 on both sides, the two calibration frames 30 can be set to adjust the seam of the parts to be welded on the automobile component body 2 or adjust the welding angle, or drive the two parts to be welded to be forced to align, thereby playing a role in accurately positioning the welding position during welding. Moreover, through the setting of the two calibration frames 30, the deformed parts of the parts to be welded on the automobile component body 2 can be forced to be squeezed and reset, thereby playing a role in auxiliary deformation and deformation compensation of the automobile component body 2 during welding. After welding is completed, the welding position can be sanded by the setting of the sanding rod 13. After sanding, it is convenient for visual and ultrasonic inspection of the automobile component body 2 after welding.

[0067] The clamping module includes a clamping screw 31 which is rotatably connected to the functional rotating frame 4. A clamping motor is installed on the functional rotating frame 4. The output shaft end of the clamping motor is fixedly connected to the clamping screw 31. The clamping screw 31 is symmetrically provided with a positive thread portion and a negative thread portion. A clamp 32 is transmission-connected to the positive thread portion and the negative thread portion. The axis of the clamping screw 31 is perpendicular to the rotation axis of the functional rotating frame 4.

[0068] After the automobile component body 2 is positioned on both sides or at two points, the setting of the clamping module can enhance the positioning effect during welding of the automobile component body 2;

[0069] At the same time, before welding the automobile component body 2, the clamping module can be set to perform sheet metal calibration or forced reset deformation on the designated welding position of the automobile component body 2.

[0070] The clamping module further includes a transfer support plate 33 , which is disposed adjacent to the functional rotating frame 4 and is fixed to a third crank arm 18 at a corresponding position.

[0071] During loading, the automobile component body 2 is placed on the transfer pallet 33. After the automobile component body 2 is placed on the transfer pallet 33, the two positioning frames 3 are adjusted in spatial position and angle, so as to facilitate the clamping of the automobile component body 2 from the transfer pallet 33. After the automobile component body 2 is processed, the processed automobile component body 2 can be placed on the transfer pallet 33, which can then assist in the unloading of the automobile component body 2. When it is necessary to change the clamped part of the automobile component body 2, the automobile component body 2 can be temporarily placed on the transfer pallet 33, which facilitates the adjustment of the clamped position of the automobile component body 2.

[0072] The solder joint detection unit includes an inspection seat installed on the functional rotating frame 4, on which a visual recognition probe 34 and an ultrasonic flaw detection head 35 are respectively installed. The single-chip microcomputer 26 has a built-in image and ultrasonic analysis module, and the data ends of the visual recognition probe 34 and the ultrasonic flaw detection head 35 are both connected to the image and ultrasonic analysis module data.

[0073] After the automobile component body 2 is welded, the visual recognition probe 34 can be used to detect the welding effect of the weld point by image recognition. The ultrasonic flaw detection head 35 can be used to detect the solidity of the weld point or weld by internal ultrasonic flaw detection, thereby realizing automatic dual-effect detection after the welding of the automobile component body 2 is completed.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. A high-precision welding positioning device for asymmetric automobile parts, comprising a base (1) and an automobile part body (2), characterized in that: It also includes two positioning frames (3) and a rotatable functional rotating frame (4), the bottom surfaces of the two positioning frames (3) and the functional rotating frame (4) are connected to a multi-section crank arm component, the positioning frame (3) is rotatably mounted with a corner frame (5), the corner frame (5) is slidably connected to two symmetrically arranged clamping frames (6), the positioning frame (3) is provided with a driving component for driving the corner frame (5) to rotate and to drive the clamping frame (6) to move, the clamping frame (6) is rotatably mounted with two rollers (7), the side of the clamping frame (6) is mounted with two motors (8), the output shaft ends of the two motors (8) are respectively fixed to the two rollers (7) The invention relates to a fixed connection, wherein a clamping belt (9) for clamping the automobile component body (2) is wound between the two winding rollers (7), a first linear transmission module (10) is provided in the clamping frame (6), an extension frame (11) is installed on the first linear transmission module (10), a guide wheel (12) in contact with the clamping belt (9) is rotatably installed on the extension frame (11), an air clamp assembly is provided on the clamping belt (9), and four functional surfaces distributed in a circumferential array are provided on the functional rotating frame (4), and a welding point calibration module, a welding point detection unit, a clamping module and a sanding rod (13) driven by a sanding motor are respectively installed on the four functional surfaces.

2. The high-precision welding positioning device for asymmetric automobile parts according to claim 1, characterized in that: The multi-section crank arm component includes an electric rotator (14), the bottom surface of the electric rotator (14) is fixedly connected to the base (1), and a turntable (15) is installed on the rotating surface of the electric rotator (14). A first crank arm (16) is hinged on the turntable (15), a second crank arm (17) is hinged on the top of the first crank arm (16), and a third crank arm (18) is hinged on the end of the second crank arm (17). A group of arm adjustment push rods (19) are hinged between the first crank arm (16) and the turntable (15), between the second crank arm (17) and the first crank arm (16), and between the third crank arm (18) and the second crank arm (17). A transfer motor (20) is installed on the third crank arm (18), and the two positioning frames (3) and the functional transfer frame (4) are respectively driven by the transfer motors (20) in the three multi-section crank arm components.

3. The high-precision welding positioning device for asymmetric automobile parts according to claim 1, characterized in that: The driving component includes an angle-changing motor (21) mounted on a positioning frame (3), a rotating shaft (22) is mounted on the output shaft end of the angle-changing motor (21), the end of the rotating shaft (22) is fixedly connected to the angle frame (5), a driven rotating frame (38) is sleeved on the rotating shaft (22), a group of connecting rods (37) are hinged between the driven rotating frame (38) and the two clamping frames (6), a driving frame (39) is rotatably sleeved on the driven rotating frame (38), a second linear transmission module (36) is mounted on the positioning frame (3), the second linear transmission module (36) is transmission-connected to the driving frame (39), a guide rod is mounted on the positioning frame (3), and the guide rod is slidingly connected to the driving frame (39).

4. The high-precision welding positioning device for asymmetric automobile parts according to claim 3, characterized in that: Two transmission guide bars are installed on the rotating shaft (22), and two transmission guide grooves are provided inside the driven rotating frame (38), and the two transmission guide grooves are respectively slidably connected to the two transmission guide bars.

5. The high-precision welding positioning device for asymmetric automobile parts according to claim 1, characterized in that: The air clamp assembly includes a clamping bag belt (23) installed on the clamping belt (9), the clamping bag belt (23) is made of silicone, an air cavity is opened inside the clamping bag belt (23), an air pump (24) is installed on the side of the clamping frame (6), a cavity is fixedly opened inside the roller (7), the cavity is connected to the air cavity, the port of the air pump (24) is connected to the cavity through an air pipe, an air pressure probe (25) is installed on the air pipe, a single-chip microcomputer (26) is installed on the base (1), and the data end of the air pressure probe (25) is connected to the single-chip microcomputer (26).

6. The high-precision welding positioning device for asymmetric automobile parts according to claim 1, characterized in that: The welding point calibration module comprises two third linear transmission modules (27), each of the two third linear transmission modules (27) is connected to a calibration seat (28), each of the two calibration seats (28) is installed with a calibration push rod (29), and each end of the two calibration push rods (29) is installed with a calibration frame (30), the calibration frame (30) is an inverted "U"-shaped structure, the transmission direction of the third linear transmission module (27) is perpendicular to the axis of the calibration push rod (29), and the axes of the third linear transmission module (27) and the calibration push rod (29) are perpendicular to the rotation axis of the functional rotating frame (4).

7. The high-precision welding positioning device for asymmetric automobile parts according to claim 1, characterized in that: The clamping module includes a clamping screw (31) rotatably connected to a functional rotating frame (4), a clamping motor is installed on the functional rotating frame (4), the output shaft end of the clamping motor is fixedly connected to the clamping screw (31), and the clamping screw (31) is symmetrically provided with a positive thread portion and a negative thread portion, and the positive thread portion and the negative thread portion are both transmission-connected to a clamp (32), and the axis of the clamping screw (31) is perpendicular to the rotation axis of the functional rotating frame (4).

8. The high-precision welding positioning device for asymmetric automobile parts according to claim 7, characterized in that: The clamping module further comprises a transfer support plate (33), the transfer support plate (33) being arranged adjacent to the functional transfer frame (4) and the transfer support plate (33) being fixed on a third crank arm (18) at a corresponding position.

9. The high-precision welding positioning device for asymmetric automobile parts according to claim 5, characterized in that: The solder joint detection unit includes a detection seat installed on a functional rotating frame (4), a visual recognition probe (34) and an ultrasonic flaw detection head (35) are respectively installed on the detection seat, the single chip computer (26) is equipped with an image and ultrasonic analysis module, and the data ends of the visual recognition probe (34) and the ultrasonic flaw detection head (35) are both connected to the image and ultrasonic analysis module data.

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