An automated stud welding equipment for leak-checking robots

Abstract

The present invention discloses an automatic stud welding device for a leak-checking robot, which relates to the technical field of industrial welding. It includes an outer housing and an inner rotating cylinder. The outer housing is rotatably connected to the inner rotating cylinder. An inner end cylinder coaxial with the opening of the outer housing is provided at the opening of the outer housing. It further includes a welding assembly. The welding assembly includes a driven internal gear ring rotatably installed on the inner peripheral wall at one end of the inner rotating cylinder. Two pairs of end rods are fixed on the inner peripheral wall of the inner rotating cylinder near the driven internal gear ring. And a sliding frame block is slidably connected to each end rod. A mounting end rod is fixedly connected to the bottom side wall of each sliding frame block. When multiple mounting end rods move towards the stud, the present invention can simultaneously drive the slider to move along the strip-shaped through groove, and use multiple T-shaped rods to pull the corrugated heat-resistant rubber pad, so that the corrugated heat-resistant rubber pad can approach the stud as much as possible, and effectively cover and protect the base material, thereby effectively reducing the influence of welding slag on the surface of the base material.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial welding, and in particular to a leak-checkable robot automatic stud welding device. Background Art

[0002] Stud welding refers to welding a stud to a base material (workpiece). In the equipment manufacturing industry, welded bolts are widely used. Stud welding is not only applied to connect check valves, flanges or other pipe fittings in pipeline engineering, but also applicable to connections in various industrial fields such as various mechanical equipment, ships, and vehicles. The accuracy of stud welding has a great impact on the quality and reliability of the connection. If the stud welding accuracy is not high enough, it will cause the bolts to loosen, fall off or the connection to be not tight, thus affecting the use safety and performance of the equipment.

[0003] After retrieval, a Chinese patent with the publication number CN214264248U discloses a robot automatic stud welding device, including a base. One side of the base is fixedly connected with a servo motor. One side of the welding and grinding brush base is provided with a welding and grinding sleeve. One end of the welding and grinding sleeve is provided with a clamping device. One end of the welding and grinding sleeve is clamped with a welding and grinding disc. The upper surface of the motor partition is fixedly connected with a cleaning liquid tank. The upper surface of the base is fixedly connected with an alarm.

[0004] Through the cooperative setting of the sub-photoelectric switch, the mother-photoelectric switch and the alarm, the robot automatic stud welding device has the effect of checking for missed welding and alarming. Through the cooperative setting of the welding and grinding disc and the cleaning liquid tank, the robot automatic stud welding device has the ability to efficiently process welding residues.

[0005] However, the above invention has the following deficiencies: During the welding process of the above patent, the surface of the base material is not protected, resulting in the surface of the base material being easily covered with welding beads during actual welding operations, and subsequent additional grinding and cleaning operations are required, which makes the overall welding operation rather cumbersome, so there are limitations. Summary of the Invention

[0006] The purpose of the present invention is to provide a leak-checkable robot automatic stud welding device to solve the problems raised in the above background art.

[0007] The technical solution of the present invention is: A leak-checkable robot automatic stud welding device, including an outer shell and an inner rotating cylinder. The outer shell is rotationally connected to the inner rotating cylinder. An inner end cylinder coaxial with the opening of the outer shell is provided at the opening of the outer shell. It also includes;

[0008] Welding assembly, the welding assembly includes a driven internal gear ring rotatably installed on the inner peripheral wall at one end of the inner rotating cylinder. Two pairs of end rods are fixed on the inner peripheral wall of the inner rotating cylinder near the driven internal gear ring, and a sliding frame block is slidably connected to each end rod. An installation end rod is fixedly connected to the bottom side wall of each sliding frame block. Welding gun heads are fixedly installed at the ends of two symmetrically distributed installation end rods. A distance sensor and a micro ultrasonic flaw detector head are respectively fixedly installed at the ends of the other two installation end rods. A transmission push-pull rod is connected between one side of the driven internal gear ring and each installation end rod through a movable shaft;

[0009] Slag receiving assembly, the slag receiving assembly includes a plurality of strip-shaped through grooves opened on the bottom of the outer shell body. A sliding rod slidably matched with the strip-shaped through groove is fixedly installed on the bottom side wall of each installation end rod, and a T-shaped rod is fixed at the bottom end of each sliding rod. A corrugated heat-resistant rubber pad is fixedly connected to the bottom sides of the plurality of T-shaped rods, and the outer edge of the corrugated heat-resistant rubber pad is fixedly connected to the outer wall of the bottom of the outer shell body;

[0010] A plurality of hemispherical grooves, the plurality of hemispherical grooves are equidistantly opened on the outer wall of the bottom of the outer shell body, and a ball is movably connected in each hemispherical groove;

[0011] Centering assembly, the centering assembly is arranged on the inner end cylinder.

[0012] Preferably, both sides of the outer peripheral wall of the outer shell body are fixedly connected with side brackets, and lifting rods are fixed at both ends of the top of the side brackets. A connecting block is fixed between the side brackets near the lifting rods and the inner end cylinder.

[0013] Preferably, an external threaded tube is commonly connected between the top of the inner end cylinder and the side brackets by threads, and a piston abutting block is fixedly connected to the bottom end of the external threaded tube. A screwing disc is fixed at the top of the external threaded tube.

[0014] Preferably, a plurality of branch cavities communicating with the inside thereof are opened at the bottom of the inner end cylinder, and a piston rod is hermetically slidably connected to the end of each branch cavity. A return spring is fixed between each piston rod and one end of the branch cavity, and a pressing block is fixed at the end of each piston rod. A plurality of oblong rubber convex strips are fixedly arranged on the outer side wall of each pressing block.

[0015] Preferably, a sliding column is slidably connected in the external threaded tube and the inner end cylinder. A threaded end is opened on the outer peripheral wall of the sliding column near the bottom end, and a plurality of dial pieces are fixed on the outer peripheral wall of the sliding column near the top end. A pressing pad is fixedly connected to the bottom end of the sliding column. A plurality of support rods are fixed on the inner peripheral wall at one end of the inner end cylinder, and a threaded cylinder is fixedly connected to the ends of the plurality of support rods. The threaded cylinder is connected to the threaded end.

[0016] Preferably, a servo motor is fixed to one end of the inner peripheral wall of the inner rotating cylinder close to the driven internal gear ring, and a second driving gear is fixedly installed on the output shaft of the servo motor, and the second driving gear meshes with the driven internal gear ring.

[0017] Preferably, both the distance sensor and the micro ultrasonic flaw detector are electrically connected to a controller, and the controller is electrically connected to the welding gun head and the servo motor.

[0018] Preferably, a driving motor is fixed to one side of the outer peripheral wall of the outer housing, and a first driving gear is fixedly connected to the output shaft of the driving motor, and an internal gear end ring meshing with the first driving gear is fixed to the inner peripheral wall of one end of the inner rotating cylinder.

[0019] Preferably, an annular sunk groove is fixed to the inner peripheral wall of one end of the outer housing, and a plurality of runners rollingly engaged with the annular sunk groove are rotatably installed on the circumferential outer wall of the inner rotating cylinder.

[0020] Preferably, a pair of retaining pieces are fixedly installed at positions on the inner bottom of the outer housing close to the distance sensor and the micro ultrasonic flaw detector, and extension cross bars are fixed to one ends of the two installation end rods close to the welding gun head, and a plurality of cleaning wire brushes are fixedly connected to both ends of each extension cross bar.

[0021] The present invention provides an automated stud welding device for leak-checking robots through improvement. Compared with the prior art, it has the following improvements and advantages:

[0022] First: The distance sensor provided in the present invention is used to detect the distance between it and the stud to be welded, so as to be able to adjust the distance between the welding gun head and the stud, thus ensuring the smooth progress of the welding operation; and the micro ultrasonic flaw detector provided can perform ultrasonic flaw detection on the welded weld position to avoid the situation of missed welding, thus ensuring the structural firmness of the stud welding; specifically, by detecting the distance between the distance sensor and the stud, the distance between the welding gun head and the stud can be known, and by controlling the rotation of the driven internal gear ring and cooperating with the provided transmission push-pull rod, the distance between the installation end rod and the welding gun head can be adjusted through the sliding frame block;

[0023] Second: When multiple installation end rods move towards the stud in the present invention, they can simultaneously drive the slider to move along the strip-shaped through groove, and use a plurality of T-shaped rods to pull the corrugated heat-resistant rubber pad, so that the corrugated heat-resistant rubber pad can approach the stud as much as possible and effectively cover and protect the base material, thereby effectively reducing the influence of welding slag on the surface of the base material and avoiding the need to spend a long time cleaning the surface of the base material later;

[0024] Thirdly: When operating the centering of the present invention, first rotate the external threaded tube. By the rotation of the external threaded tube, the piston block is pushed downward, and by using the hydraulic effect, multiple piston rods are pushed to extend outward. Due to the uniformity of the hydraulic effect, with the cooperation of the arranged balls and hemispherical grooves, multiple pressing blocks can be made to fit the surface of the stud, and the inner end cylinder and the inner rotating cylinder can be coaxially positioned with the stud. By arranging multiple oval rubber ridges on the pressing blocks, stable clamping of the stud can be achieved for the screw grooves on the surface of the stud. After the pressing block presses and fixes the stud, the slide column can be continuously rotated by using the dial. By using the arranged threaded end and threaded cylinder, the slide column can move downward together with the pressing pad until the pressing pad abuts against the top end of the stud. Through this setting, the connection and fixing effect between the device and the stud can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts

[0026] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention;

[0027] Figure 2 is the sectional structure schematic diagram of the outer shell of the present invention;

[0028] Figure 3 is of the present invention Figure 2 is the enlarged structure schematic diagram at A in the present invention;

[0029] Figure 4 is the sectional structure schematic diagram of the inner rotating cylinder of the present invention;

[0030] Figure 5 is the internal structure schematic diagram of the outer shell of the present invention;

[0031] Figure 6 is the three-dimensional structure schematic diagram of the slide bar and the corrugated heat-resistant rubber pad of the present invention;

[0032] Figure 7 is the internal structure schematic diagram of the inner end cylinder of the present invention;

[0033] Figure 8 is of the present invention Figure 7 is the enlarged structure schematic diagram at B in the present invention;

[0034] Figure 9 is the three-dimensional structure schematic diagram of the driven internal gear ring of the present invention;

[0035] Figure 10 Schematic diagram of the partial explosion structure of the present invention.

[0036] Reference numerals:

[0037] 1. Outer housing; 11. Side bracket; 111. Annular sink; 12. Lifting rod; 13. Connecting block; 14. Driving motor; 141. First driving gear; 15. Hemispherical groove; 151. Ball; 16. Strip-shaped through groove; 17. Flap; 2. Inner rotating cylinder; 21. Inner tooth end ring; 22. Runner; 3. Inner end cylinder; 31. External threaded pipe; 311. Piston abutting block; 312. Wrenching disc; 32. Slide column; 321. Paddle; 33. Threaded end; 34. Pressure pad; 35. Support cavity; 351. Piston rod; 352. Return spring; 353. Pressing block; 354. Oval rubber convex strip; 36. Support rod; 361. Threaded barrel; 4. Driven inner tooth ring; 41. Servo motor; 42. Second driving gear; 43. End rod; 44. Slide frame block; 45. Transmission push-pull rod; 46. Mounting end rod; 47. Welding gun head; 471. Extended cross bar; 472. Cleaning wire brush; 48. Distance sensor; 49. Miniature ultrasonic flaw detector head; 5. Slide rod; 51. T-shaped rod; 52. Corrugated heat-resistant rubber pad. Detailed implementation manners

[0038] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] The present invention provides an automatic stud welding device for a leak-checking robot through improvement. The technical solution of the present invention is as follows:

[0040] As Figures 1 to 10 shown, the embodiment of the present invention provides an automatic stud welding device for a leak-checking robot, including an outer housing 1 and an inner rotating cylinder 2. The outer housing 1 is rotatably connected to the inner rotating cylinder 2. An inner end cylinder 3 coaxially arranged is provided at the opening of the outer housing 1. The inner rotating cylinder 2 can rotate relative to the outer housing 1 and the inner end cylinder 3, so as to facilitate the subsequent welding operation. It further includes;

[0041] The welding assembly includes a driven inner gear ring 4 rotatably mounted on the inner circumferential wall of one end of the inner rotating cylinder 2, two pairs of end rods 43 are fixed to one end of the inner circumferential wall of the inner rotating cylinder 2 close to the driven inner gear ring 4, and each end rod 43 is slidably connected to a sliding frame block 44, and a mounting end rod 46 is fixedly connected to the bottom side wall of each sliding frame block 44, wherein the ends of two symmetrically distributed mounting end rods 46 are fixedly mounted with welding gun heads 47, and the ends of the other two mounting end rods 46 are respectively fixedly mounted with a distance sensor 48 and a miniature ultrasonic flaw detection head 49, and a transmission push-pull rod 45 is connected between one side of the driven inner gear ring 4 and each mounting end rod 46 through a movable shaft;

[0042] Through the above structure, the distance sensor 48 is used to detect the distance between it and the stud to be welded, so that the distance between the welding gun head 47 and the stud can be adjusted to ensure the smooth progress of the welding operation;

[0043] The micro ultrasonic flaw detection head 49 can perform ultrasonic flaw detection on the weld position to avoid welding leaks, thereby ensuring the structural firmness of the stud welding.

[0044] Specifically, the distance sensor 48 detects the distance between it and the stud, so that the distance between the welding gun head 47 and the stud can be known. By controlling the rotation of the driven inner gear ring 4 and cooperating with the transmission push-pull rod 45, the distance between the installation end rod 46 and the welding gun head 47 can be adjusted through the sliding frame block 44.

[0045] The slag connecting component includes a plurality of strip through grooves 16 opened on the bottom inner side of the outer shell 1, and a sliding rod 5 that slides with the strip through groove 16 is fixedly installed on the bottom side wall of each mounting end rod 46, and the bottom ends of the plurality of sliding rods 5 are fixed with T-shaped rods 51, and the bottom sides of the plurality of T-shaped rods 51 are commonly fixedly connected with a corrugated heat-resistant rubber pad 52, and the outer edge of the corrugated heat-resistant rubber pad 52 is fixedly connected to the outer wall of the bottom of the outer shell 1; through the above structure, when the plurality of mounting end rods 46 move toward the stud, the sliding rod 5 can be driven to move along the strip through groove 16 at the same time, and the corrugated heat-resistant rubber pad 52 can be pulled by using the plurality of T-shaped rods 51, so that the corrugated heat-resistant rubber pad 52 can be as close to the stud as possible, and effectively cover and protect the substrate, thereby effectively reducing the impact of welding slag on the surface of the substrate.

[0046] Multiple hemispherical grooves 15 are equidistantly arranged on the bottom outer wall of the outer shell 1, and a ball 151 is movably connected in each hemispherical groove 15; through the above structure, the hemispherical grooves 15 are arranged in conjunction with the ball 151, so that the outer shell 1 has good flexibility, which is convenient for positioning and centering the device.

[0047] The centering component is arranged on the inner end tube 3. The centering component is used to ensure that the outer shell 1 and the inner end tube 3 are in a coaxial position to ensure the accuracy of the welding operation.

[0048] As a further solution of the present invention, side brackets 11 are fixedly connected to both sides of the outer peripheral wall of the outer shell 1, and lifting rods 12 are fixed on both sides of the top of the side bracket 11, and a connecting block 13 is fixed between the side bracket 11 and the inner end tube 3 near the lifting rod 12; through the above structure, the inner end tube 3 and the outer shell 1 are fixed relative to each other; at the same time, the device is convenient to carry with the help of the provided lifting rod 12.

[0049] As a further solution of the present invention, an external threaded tube 31 is connected between the top of the inner end tube 3 and the side bracket 11 through threads, and the bottom end of the external threaded tube 31 is fixedly connected to a piston block 311, and the top of the external threaded tube 31 is fixed with a screw disk 312.

[0050] Furthermore, the bottom of the inner end tube 3 is provided with a plurality of branch cavities 35 connected to the interior thereof, and the end of each branch cavity 35 is sealed and slidably connected to a piston rod 351, a return spring 352 is fixed between each piston rod 351 and one end of the branch cavity 35, and a pressure block 353 is fixed to the end of each piston rod 351, and a plurality of oblong rubber ridges 354 are fixedly provided on the outer wall of each pressure block 353.

[0051] With the above structure, when the centering assembly is used, it is necessary to first determine the welding position of the stud, and use spot welding to pre-fix the stud and the base material by welding three to four welding points; after completion, cover the outer shell 1 and set the inner end tube 3 on the outside of the top of the stud. It should be noted that the outer shell 1 is specifically made of colored tempered glass, which, on the one hand, makes it easier for personnel to observe the interior of the outer shell 1, and on the other hand, can reduce the strong light generated by welding to a certain extent;

[0052] During the centering operation, it is necessary to first rotate the external threaded tube 31, and the rotation of the external threaded tube 31 pushes the piston block 311 downward, and uses the hydraulic effect to push the multiple piston rods 351 to extend and move outward. Due to the uniformity of the hydraulic effect, the balls 151 and the hemispherical grooves 15 are arranged, so that the multiple pressing blocks 353 can fit the surface of the stud, and the inner end tube 3 and the inner rotating tube 2 are in a coaxial position with the stud.

[0053] By providing a plurality of oblong rubber protrusions 354 on the pressing block 353 , the stud can be firmly clamped according to the screw groove on the surface of the stud.

[0054] Further, a sliding column 32 is slidably connected between the external thread pipe 31 and the inner end cylinder 3. A threaded end 33 is provided on the outer peripheral wall of the sliding column 32 near the bottom end. A plurality of paddles 321 are fixed on the outer peripheral wall of the sliding column 32 near the top end. A pressing pad 34 is fixedly connected to the bottom end of the sliding column 32. A plurality of support rods 36 are fixed on the inner peripheral wall of one end of the inner end cylinder 3, and a threaded cylinder 361 is fixedly connected to the ends of the plurality of support rods 36. The threaded cylinder 361 is connected to the threaded end 33.

[0055] With the above structure, after the pressing block 353 presses and fixes the stud, the paddle 321 can be used to continue rotating the sliding column 32. By using the provided threaded end 33 and threaded cylinder 361, the sliding column 32 can move downward together with the pressing pad 34 until the pressing pad 34 abuts against the top end of the stud. Through this setting, the connection and fixing effect between the device and the stud can be further improved.

[0056] It should be noted that dynamic seals are installed at the connection between the inner end cylinder 3 and the sliding column 32 to ensure the sealing effect.

[0057] Further, a servo motor 41 is fixed on the inner peripheral wall of the inner rotating cylinder 2 near one end of the driven internal gear ring 4, and a driving gear two 42 is fixedly installed on the output shaft of the servo motor 41. The driving gear two 42 meshes with the driven internal gear ring 4.

[0058] Further, both the distance sensor 48 and the micro ultrasonic flaw detector 49 are electrically connected to a controller, and the controller is electrically connected to the welding gun head 47 and the servo motor 41.

[0059] With this setting, after the distance sensor 48 measures the distance from the stud, the signal can be transmitted to the controller. After receiving the signal, the controller controls the servo motor 41 to start. The servo motor 41 cooperates with the driving gear two 42 to drive the driven internal gear ring 4 to rotate, so as to realize the adjustment of the positions of the plurality of installation end rods 46. It should be noted that the servo motor 41 is specifically a self-locking servo motor, that is, when the servo motor 41 stops running, it can lock the output shaft by using its own position loop to ensure the stability of the installation end rod 46 after the position adjustment.

[0060] Further, a driving motor 14 is fixed on one side of the outer peripheral wall of the outer housing 1, and a driving gear one 141 is fixedly connected to the output shaft of the driving motor 14. An internal gear end ring 21 meshing with the driving gear one 141 is fixed on the inner peripheral wall of one end of the inner rotating cylinder 2.

[0061] With the above structure, during the welding operation, the driving motor 14 can be controlled to start. Through the transmission of the first driving gear 141 and the internal tooth end ring 21, the inner rotating cylinder 2 is driven to rotate. At the same time, the rotation of the inner rotating cylinder 2 can drive the two welding gun heads 47 to rotate, so as to weld the stud and the base material. At the same time, the two welding gun heads 47 are symmetrically distributed, ensuring uniform force during stud welding and facilitating the shortening of the welding time. It should be noted that the welding gun head 47 is preferably a tungsten argon arc welding gun head.

[0062] Furthermore, an annular groove 111 is fixed on the inner peripheral wall at one end of the outer shell 1, and a plurality of runners 22 that are rotatably installed on the circumferential outer wall of the inner rotating cylinder 2 and are in rolling cooperation with the annular groove 111 are provided. The arranged runners 22 cooperate with the annular groove 111, which can effectively improve the stability of the inner rotating cylinder 2 during rotation, thereby ensuring the welding quality.

[0063] Furthermore, a pair of baffles 17 are fixedly installed at positions on the inner bottom of the outer shell 1 close to the distance sensor 48 and the micro ultrasonic flaw detector 49. At one end of the two installation end rods 46 close to the welding gun head 47, extension cross bars 471 are fixedly installed, and a plurality of cleaning wire brushes 472 are fixedly connected to both ends of each extension cross bar 471. By using the arranged baffles 17, on the one hand, it can protect the distance sensor 48 and the micro ultrasonic flaw detector 49; on the other hand, it can effectively improve the structural firmness of the inner rotating cylinder 2. At the same time, before and after welding, the arranged extension cross bars 471 and cleaning wire brushes 472 can effectively clean the weld seam, saving the process and avoiding impurities from affecting the welding quality.

[0064] The specific working method is as follows: When in use, it is necessary to first determine the welding position of the stud and use spot welding to pre-fix the stud and the base material by welding three to four weld points. After completion, cover the outer shell 1 and make the inner end cylinder 3 sleeved on the outer side of the top of the stud. It should be noted that the outer shell 1 is specifically made of colored tempered glass. On the one hand, it is convenient for personnel to observe the inside of the outer shell 1, and on the other hand, it weakens the strong light generated during welding to a certain extent. During the centering operation, it is necessary to first rotate the external thread tube 31. By rotating the external thread tube 31, the piston abutment 311 is pushed downward, and using the hydraulic effect, a plurality of piston rods 351 are pushed to extend outward. Due to the uniformity of the hydraulic effect, in cooperation with the arranged balls 151 and the hemispherical grooves 15, a plurality of pressing blocks 353 are all in contact with the surface of the stud, and the inner end cylinder 3 and the inner rotating cylinder 2 are coaxially positioned with the stud. By arranging a plurality of oval rubber protrusions 354 on the pressing block 353, the stud can be firmly clamped in view of the thread grooves on the surface of the stud.

[0065] After the pressing block 353 presses and fixes the stud, the slide column 32 can be continuously rotated by using the paddle 321. By means of the provided threaded end 33 and threaded barrel 361, the slide column 32 together with the pressing pad 34 moves downward until the pressing pad 34 abuts against the top end of the stud. Through this setting, the connection and fixing effect between the device and the stud can be further improved; the provided distance sensor 48 is used to detect the distance between it and the stud to be welded, so as to adjust the distance between the welding gun head 47 and the stud, thereby ensuring the smooth progress of the welding operation; and the provided micro ultrasonic flaw detector head 49 performs ultrasonic flaw detection on the welded weld position to avoid the situation of missed welding, thereby ensuring the structural firmness of the stud welding.

[0066] Specifically, the distance sensor 48 detects the distance from the stud and can transmit the signal to the controller. After receiving the signal, the controller controls the start of the servo motor 41. The servo motor 41 cooperates with the driving gear two 42 to drive the driven internal gear ring 4 to rotate, thereby realizing the adjustment of the positions of the plurality of mounting end rods 46; when the plurality of mounting end rods 46 move towards the stud, they simultaneously drive the slide rod 5 to move along the strip-shaped through groove 16, and use a plurality of T-shaped rods 51 to pull the corrugated heat-resistant rubber pad 52, so that the corrugated heat-resistant rubber pad 52 approaches the stud as much as possible and effectively covers and protects the base material, thereby effectively reducing the influence of welding slag on the surface of the base material.

[0067] During the welding operation, the driving motor 14 can be controlled to start. Through the transmission of the driving gear one 141 and the internal gear end ring 21, the inner rotating cylinder 2 is driven to rotate. At the same time, the rotation of the inner rotating cylinder 2 drives the two welding gun heads 47 to rotate, thereby performing welding treatment on the stud and the base material; before and after welding, the provided extension cross bar 471 and the cleaning wire brush 472 effectively clean the weld, saving the process and avoiding impurities from affecting the welding quality.

[0068] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic stud welding device for a leak-checking robot, comprising an outer shell (1) and an inner rotating cylinder (2), wherein the outer shell (1) is rotatably connected to the inner rotating cylinder (2), and an inner end cylinder (3) coaxial with the outer shell (1) is arranged at the opening of the outer shell (1), characterized in that, Further included are; A welding assembly, the welding assembly includes a driven internal gear ring (4) rotatably mounted on the inner peripheral wall at one end of the inner rotating cylinder (2). At one end of the inner peripheral wall of the inner rotating cylinder (2) close to the driven internal gear ring (4), two pairs of end rods (43) are fixed. A sliding frame block (44) is slidably connected to each end rod (43). A mounting end rod (46) is fixedly connected to the bottom side wall of each sliding frame block (44). Welding gun heads (47) are fixedly mounted at the ends of two symmetrically distributed mounting end rods (46). A distance sensor (48) and a micro ultrasonic flaw detector head (49) are respectively fixedly mounted at the ends of the other two mounting end rods (46). A transmission push-pull rod (45) is connected between one side of the driven internal gear ring (4) and each mounting end rod (46) through a movable shaft; A slag receiving assembly, the slag receiving assembly includes a plurality of strip-shaped through grooves (16) opened on the inner bottom of the outer casing (1). A sliding rod (5) slidably engaged with the strip-shaped through groove (16) is fixedly mounted on the bottom side wall of each mounting end rod (46). A T-shaped rod (51) is fixed to the bottom end of each sliding rod (5). A corrugated heat-resistant rubber pad (52) is fixedly connected to the bottom sides of the plurality of T-shaped rods (51). The outer edge of the corrugated heat-resistant rubber pad (52) is fixedly connected to the outer bottom wall of the outer casing (1); A plurality of hemispherical grooves (15), the plurality of hemispherical grooves (15) are equidistantly opened on the outer bottom wall of the outer casing (1). A ball (151) is movably connected in each hemispherical groove (15); An alignment assembly, the alignment assembly is arranged on the inner end cylinder (3).

2. The automated stud welding equipment for leak-checking robots according to claim 1, characterized in that: Two sides of the outer peripheral wall of the outer casing (1) are fixedly connected together with side brackets (11). Lifting rods (12) are fixed to both sides of the top of the side brackets (11). A connecting block (13) is fixed between the side brackets (11) close to the lifting rods (12) and the inner end cylinder (3).

3. The automatic stud welding equipment for leak-checking robots according to claim 2, characterized in that: An external threaded pipe (31) is commonly connected between the top of the inner end cylinder (3) and the side brackets (11) by threads. A piston abutting block (311) is fixedly connected to the bottom end of the external threaded pipe (31). A screwing disc (312) is fixed to the top of the external threaded pipe (31).

4. The automatic stud welding equipment for leak-checking robots according to claim 3, characterized in that: A plurality of branch cavities (35) communicating with the inside are opened at the bottom of the inner end cylinder (3). A piston rod (351) is hermetically slidably connected to the end of each branch cavity (35). A return spring (352) is fixed between each piston rod (351) and one end of the branch cavity (35). A pressing block (353) is fixed to the end of each piston rod (351). A plurality of oval rubber convex strips (354) are fixedly arranged on the outer side wall of each pressing block (353).

5. The automated stud welding equipment for leak-checking robots according to claim 3, characterized in that: A sliding column (32) is slidably connected between the external thread tube (31) and the inner end cylinder (3). A threaded end (33) is provided on the outer peripheral wall of the sliding column (32) near the bottom end. A plurality of paddle pieces (321) are fixed on the outer peripheral wall of the sliding column (32) near the top end. A pressure pad (34) is fixedly connected to the bottom end of the sliding column (32). A plurality of support rods (36) are fixed on the inner peripheral wall of one end of the inner end cylinder (3), and a threaded cylinder (361) is fixedly connected to the ends of the plurality of support rods (36). The threaded cylinder (361) is connected to the threaded end (33).

6. The automatic stud welding equipment for leak-checking robots according to claim 1, wherein: A servo motor (41) is fixed on the inner peripheral wall of the inner rotating cylinder (2) near one end of the driven internal gear ring (4). An output shaft of the servo motor (41) is fixedly installed with a second driving gear (42). The second driving gear (42) meshes with the driven internal gear ring (4).

7. The automatic stud welding equipment for leak-checking robots according to claim 1, characterized in that: Both the distance sensor (48) and the micro ultrasonic flaw detector head (49) are electrically connected to a controller, and the controller is electrically connected to the welding gun head (47) and the servo motor (41).

8. The automatic stud welding equipment for leak-checking robots according to claim 1, characterized in that: A driving motor (14) is fixed on one side of the outer peripheral wall of the outer housing (1). An output shaft of the driving motor (14) is fixedly connected to a first driving gear (141). An internal gear end ring (21) meshing with the first driving gear (141) is fixed on the inner peripheral wall of one end of the inner rotating cylinder (2).

9. The automated stud welding equipment for leak-checking robots according to claim 1, characterized in that: An annular sink (111) is fixed on the inner peripheral wall of one end of the outer housing (1). A plurality of runners (22) rollingly engaged with the annular sink (111) are rotatably installed on the circumferential outer wall of the inner rotating cylinder (2).

10. The automated stud welding equipment for leak-checkable robots according to claim 1, characterized in that: A pair of retaining pieces (17) are fixedly installed at positions on the inner bottom of the outer housing (1) near the distance sensor (48) and the micro ultrasonic flaw detector head (49). Extension cross bars (471) are fixedly connected to the ends of the two mounting end rods (46) near the welding gun head (47), and a plurality of cleaning wire brushes (472) are fixedly connected to both ends of each extension cross bar (471).

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