A seamless sheet metal riveting and welding integrated processing device and method

Abstract

This invention discloses an integrated seamless processing device and method for sheet metal riveting and welding, belonging to the field of welding technology. It includes a welding table, a positioning plate, a support frame, and a riveting mechanism. The positioning plate is fixedly installed on the upper end of the welding table, the support frame is fixedly installed on the welding table at the side end of the positioning plate, and the riveting mechanism is fixedly installed on the upper end of the support frame. A servo motor assembly frame is installed on the upper end of the support frame, and a servo motor is fixedly assembled at the front end of the servo motor assembly frame. A controller is installed on the side end of the support frame. This invention can prevent excessive downward pressure from the positioning plate from damaging the riveting parts; it completes three-point spot welding at equal angles, ensuring the same amount of welding wire at the spot welding positions, thus guaranteeing the stability of the connection between the riveting parts and the sheet metal. During the spot welding process, the positioning plate continuously corrects and tightens the position of the riveting parts, effectively ensuring the strength and positional accuracy of the riveting connection.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to an integrated seamless processing device and method for sheet metal riveting and welding. Background Technology

[0002] In the production of sheet metal enclosures, many structural connections require press riveting. However, press riveting has the disadvantage of being prone to loosening, for the following reasons:

[0003] 1. The screws, studs and nuts after crimping may loosen under conditions of impact or vibration of the housing;

[0004] 2. For some riveting locations, a method of riveting before bending is used. However, the riveting screws or nuts may obstruct the bending edge, so bending must be performed first. But because the riveting is close to the bending edge, uneven force may occur when riveting this part, easily leading to loosening of the riveting.

[0005] 3. When large nuts are pressed onto thick plates, the riveting machine may not provide sufficient pressure, resulting in insecure riveting. Therefore, spot welding is required to weld a few points to the inner end face of the screw to enhance the connection strength of the riveted parts.

[0006] The above reasons lead to loosening of the press-fit parts. Since the press-fit parts are small, manual spot welding after loosening will leave weld marks. It is also difficult to ensure that the press-fit studs are perpendicular to the plate surface during welding. In addition, the shrinkage after the weld melts and cools may cause the welded press-fit parts to be skewed. Therefore, it will lead to poor assembly, tedious rework, and scrap of sheet metal parts. Therefore, it is necessary to propose a seamless processing device and method for sheet metal press-fitting and welding. Summary of the Invention

[0007] The purpose of this invention is to provide a seamless processing device and method for sheet metal riveting and welding, which facilitates spot welding at the connection end between the riveted part and the sheet metal. After welding, the part will not be warped due to the cooling and shrinkage of the sheet metal. Argon arc welding is used to ensure the required welding strength and the weld scar is small. No grinding is required. There are no weld scars after powder coating. This invention solves the problems of loose riveting, obvious welding marks and welding warping mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A seamless sheet metal riveting and welding integrated processing device includes a welding table, a positioning plate, a support frame, and a riveting and welding mechanism. The positioning plate is fixedly installed on the upper end of the welding table, the support frame is fixedly installed on the welding table on the side of the positioning plate, and the riveting and welding mechanism is fixedly installed on the upper end of the support frame. A servo motor assembly frame is installed on the upper end of the support frame, a servo motor is fixedly installed at the front end of the servo motor assembly frame, and a controller is installed on the side of the support frame. The servo motor and the controller are electrically connected.

[0010] Preferably, an X-axis baffle is fixedly welded to the transverse end of the positioning plate, and a Y-axis baffle is fixedly welded to the longitudinal end of the positioning plate.

[0011] Preferably, the riveting and welding mechanism includes a solder pad fixing seat, a solder pad, a welding gun adjustment frame, and an argon arc welding gun; one end of the solder pad fixing seat is fixedly welded to a support frame, a first positioning hole is provided in the center of the solder pad fixing seat, a first gear receiving frame is inserted into the first positioning hole, a first gear is provided at the upper end of the solder pad fixing seat, the first gear is movably mounted on the first gear receiving frame, a second gear receiving frame is installed on the solder pad fixing seat at the side end of the first gear, a second gear is movably mounted at the upper end of the second gear receiving frame, and the second gear meshes with the first gear; the output end of the servo motor is fixedly connected to the center of the second gear.

[0012] Preferably, the upper end of the welding pad is fixedly welded to the lower end of the first gear receiving frame, and a shaft is provided at the lower end of the welding pad. Both ends of the shaft are provided with internal thread grooves. The welding gun adjustment frame is installed on the shaft and is fixedly connected to the shaft by bolts through the through holes of the shaft and screwed into the internal thread grooves. The argon arc welding gun is fixedly installed at the lower end of the welding gun adjustment frame.

[0013] Preferably, the positioning plate is provided with a riveting plate, which is placed flat on the positioning plate; the center of the welding pad is concentric with the riveting part at the upper end of the riveting plate.

[0014] Preferably, the lower end of the welding pad is further provided with an angle positioning device, which includes a support square plate, an internal thread block, and a manual adjustment screw; a strip groove is opened through the middle of the welding gun adjustment frame, and an I-shaped frame is fixedly installed in the strip groove at both ends of the welding gun adjustment frame. A shaft tube is movably sleeved at the middle end of the I-shaped frame, the front end of the manual adjustment screw is sleeved in the shaft tube, and the other end of the manual adjustment screw is screwed through and screwed into the internal thread block, which is fixedly welded to the support square plate.

[0015] Preferably, both ends of the I-shaped frame are square plates, and the inner end face is in contact with the outer end of the welding torch adjustment frame.

[0016] Preferably, a positioning device is installed at the lower end of the pad. The positioning device includes a support rod, a spring, a pressure sensor, a push cylinder, and a positioning plate. The upper end of the support rod is fixedly welded to the lower end of the pad. The push cylinder is assembled inside the support rod. The pressure sensor is assembled at the output end of the push cylinder. One end of the spring is connected to the pressure sensor, and the other end of the spring is fixedly connected to the positioning plate. The inner end of the positioning plate is set in a trapezoidal arc shape. The pressure sensor and the push cylinder are both electrically connected to the controller.

[0017] According to another aspect of the present invention, a method for a seamless sheet metal riveting and welding integrated processing apparatus is provided, comprising the following steps:

[0018] S1: Place the rivet plate on the positioning plate, and place the rivet on the rivet plate in a position directly opposite the lower end of the positioning plate. The inner end of the positioning plate is set in a trapezoidal arc shape, so that the upper end of the rivet on the rivet plate is fastened in the slot at the lower end of the positioning plate. The support rod is pushed down by the push cylinder, the spring is compressed, and the spring pushes the positioning plate down, so that the positioning plate corrects and presses the position of the rivet. The pressure sensor is used to detect the pressure value and transmit the detected signal to the controller. Set the upper limit of pressure. When the upper limit of pressure is reached, control the push cylinder to stop working. The set pressure value can prevent the positioning plate from applying too much downward pressure, which may damage the rivet.

[0019] S2: Rotate the manual adjustment screw. At this time, the front end of the manual adjustment screw is fitted inside the shaft tube, and the shaft tube can rotate on the I-shaped frame. Therefore, through the internal thread cooperation between the manual adjustment screw and the internal thread block, the manual adjustment screw can move back and forth, thereby driving the shaft tube to move back and forth. The shaft tube can synchronously drive the I-shaped frame to move. The I-shaped frame moves in the strip groove, thereby pushing the welding gun adjustment frame to move. The upper end of the welding gun adjustment frame is connected by a shaft. Therefore, when the welding gun adjustment frame moves, its angle also changes. At this time, the angle of the welding gun adjustment frame can be adjusted so that the welding head of the argon arc welding gun at the lower end of the welding gun adjustment frame is aligned with the connection end of the riveting part and the riveting plate.

[0020] S3: After the rivet is clamped and positioned, the controller controls the servo motor to work. The servo motor drives the second gear to rotate through the linkage of the second gear support frame. The rotation of the second gear drives the first gear, and the rotation of the first gear drives the first gear support frame to rotate. At this time, the welding pad at the lower end rotates synchronously. At this time, the welding gun adjustment frame rotates synchronously. After the position of the argon arc welding gun in S2 is adjusted, the servo motor works to drive the second gear to rotate. Through the linkage, the argon arc welding gun at the lower end rotates. The controller controls the rotation amount of each rotation to drive the welding pad to rotate 120 degrees. After rotating 120 degrees, the argon arc welding gun is controlled to spot weld one point. After spot welding is completed, it rotates another 120 degrees and spot welds another point. This cycle is repeated to complete the three-point spot welding, ensuring the stability of the connection between the rivet and the plate. During spot welding, the positioning plate in S1 always corrects and clamps the position of the rivet. Therefore, during the cooling and shrinkage process of the plate after spot welding, the rivet will not be tilted to the side. After the spot welding is completed and cooled, the fixing work of the rivet is completed.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. In this invention, a push cylinder provides pressure, and a spring acts as a buffer element. After the force is transmitted to the positioning plate, the positioning plate presses and corrects the position of the rivet on the rivet plate to prevent tilting due to improper placement during spot welding and to prevent tilting due to cooling and shrinkage after spot welding. The pressure sensor can transmit the detected pressure value to the controller to determine when the upper pressure limit is reached. When the upper pressure limit is reached, the push cylinder is controlled to stop working. With the buffering effect of the spring, the downward pressure of the positioning plate can be prevented from being too large and causing damage to the rivet.

[0023] 2. This invention allows for the adjustment of the welding torch adjustment frame angle by rotating a manual adjustment screw until the welding head of the argon arc welding torch at the lower end of the adjustment frame is aligned with the connection end between the riveting component and the riveting plate. After the welding head position is adjusted, the controller controls the rotation to 120 degrees each time. After rotating 120 degrees, the argon arc welding torch is controlled to spot weld one point. After spot welding, the controller rotates another 120 degrees and spot welds another point, repeating this cycle to complete three-point spot welding. The spot welding positions, i.e., the amount of welding wire used, are the same, ensuring the stability of the connection between the riveting component and the plate. During the spot welding process, the positioning plate always corrects and presses the position of the riveting component, preventing the riveting component from tilting during spot welding. Therefore, the riveting component will not tilt during the cooling and shrinkage process of the plate after spot welding, effectively ensuring the strength and positional accuracy of the riveting component connection. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a bottom view of the positioning plate and riveting mechanism of the present invention;

[0026] Figure 3This is a top view of the connection between the positioning plate and the riveting mechanism of the present invention;

[0027] Figure 4 This is a diagram showing the welding position adjustment state of the argon arc welding gun according to the present invention;

[0028] Figure 5 This is a schematic diagram of the riveting and welding mechanism of the present invention;

[0029] Figure 6 This is an exploded view of the engagement state of the first gear and the second gear of the present invention.

[0030] In the diagram: 1. Welding table; 2. Positioning plate; 21. X-axis baffle; 22. Y-axis baffle; 3. Support frame; 4. Riveting and welding mechanism; 401. Welding pad fixing seat; 4011. First positioning hole; 402. Welding pad; 403. Welding torch adjusting frame; 4031. Strip groove; 4032. I-beam frame; 4033. Shaft tube; 404. Argon arc welding torch; 405. First gear receiving frame; 406. First gear; 407. Second gear receiving frame. 408. Connecting frame; 409. Second gear; 410. Shaft; 411. Riveting plate; 4111. Angle positioning device; 4112. Support square plate; 4113. Internal thread block; 4114. Manual adjusting screw; 412. Positioning device; 4121. Support rod; 4122. Spring; 4123. Pressure sensor; 4124. Push cylinder; 4125. Positioning pressure plate; 5. Servo motor assembly frame; 6. Servo motor; 7. Controller. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] To address the issue of existing press-fit parts not being securely pressed, and the subsequent cooling and shrinkage causing the press-fit parts to tilt and preventing screws from being installed, please refer to [the relevant documentation / reference]. Figures 1-6 This embodiment provides the following technical solution:

[0033] A seamless sheet metal riveting and welding integrated processing device includes a welding table 1, a positioning plate 2, a support frame 3, and a riveting and welding mechanism 4. The positioning plate 2 is fixedly installed on the upper end of the welding table 1, the support frame 3 is fixedly installed on the welding table 1 on the side of the positioning plate 2, and the riveting and welding mechanism 4 is fixedly installed on the upper end of the support frame 3. A servo motor assembly frame 5 is installed on the upper end of the support frame 3, a servo motor 6 is fixedly installed on the front end of the servo motor assembly frame 5, and a controller 7 is installed on the side of the support frame 3. The servo motor 6 and the controller 7 are electrically connected.

[0034] like Figure 3-4 As shown, as a further embodiment of the present invention, an X-axis baffle 21 is fixedly welded to the transverse end of the positioning plate 2, and a Y-axis baffle 22 is fixedly welded to the longitudinal end of the positioning plate 2.

[0035] By adopting the above technical solution, the positioning plate 2 is used to place the rivet plate 410, and the X-axis baffle 21 and Y-axis baffle 22 are used to prevent the rivet plate 410 from falling off.

[0036] like Figure 2-6 As shown, as a further embodiment of the present invention, the riveting and welding mechanism 4 includes a solder pad fixing seat 401, a solder pad 402, a welding gun adjusting frame 403, and an argon arc welding gun 404; one end of the solder pad fixing seat 401 is fixedly welded to the support frame 3, a first positioning circular hole 4011 is provided in the center of the solder pad fixing seat 401, a first gear receiving frame 405 is inserted into the first positioning circular hole 4011, a first gear 406 is provided at the upper end of the solder pad fixing seat 401, the first gear 406 is movably mounted on the first gear receiving frame 405, a second gear receiving frame 407 is installed on the solder pad fixing seat 401 at the side end of the first gear 406, a second gear 408 is movably mounted at the upper end of the second gear receiving frame 407, and the second gear 408 meshes with the first gear 406; the output end of the servo motor 6 is fixedly connected to the center of the second gear 408.

[0037] By adopting the above technical solution, the controller 7 controls the servo motor 6 to work. The servo motor 6 drives the second gear 408 to rotate through the linkage of the second gear support frame 407. The rotation of the second gear 408 drives the first gear 406 to rotate. The rotation of the first gear 406 drives the first gear support frame 405 to rotate. At this time, the welding pad 402 welded at the lower end can rotate synchronously.

[0038] like Figure 5 As shown, as a further embodiment of the present invention, the upper end of the welding pad 402 is fixedly welded to the lower end of the first gear support frame 405, and a shaft 409 is provided at the lower end of the welding pad 402. Both ends of the shaft 409 are provided with internal thread grooves. The welding torch adjustment frame 403 is installed on the shaft 409 and is fixedly connected to the shaft 409 by bolts passing through the through holes of the shaft 409 and screwed into the internal thread grooves. The argon arc welding torch 404 is fixedly installed at the lower end of the welding torch adjustment frame 403.

[0039] By adopting the above technical solution, the lower welding gun adjustment frame 403 rotates synchronously when the welding pad 402 rotates. After the position of the argon arc welding gun 404 is adjusted, the servo motor 6 drives the second gear 408 to rotate. Through the linkage, the lower argon arc welding gun 404 rotates. The controller 7 controls the rotation amount of each rotation to drive the welding pad 402 to rotate 120 degrees.

[0040] like Figure 5 As shown, as a further embodiment of the present invention, an angle positioning device 411 is also provided at the lower end of the solder pad 402. The angle positioning device 411 includes a support square plate 4111, an internal thread block 4112, and a manual adjustment screw 4113. A strip groove 4031 is provided through the middle end of the welding gun adjustment frame 403. An I-shaped frame 4032 is fixedly installed in the strip groove 4031 at both ends of the welding gun adjustment frame 403. A shaft tube 4033 is movably sleeved at the middle end of the I-shaped frame 4032. The front end of the manual adjustment screw 4113 is sleeved in the shaft tube 4033. The other end of the manual adjustment screw 4113 is screwed through and screwed into the internal thread block 4112. The internal thread block 4112 is fixedly welded in the support square plate 4111. A rivet plate 410 is provided on the positioning plate 2. The rivet plate 410 is placed flat on the positioning plate 2. The center of the solder pad 402 is concentric with the rivet at the upper end of the rivet plate 410.

[0041] By adopting the above technical solution, the manual adjustment screw 4113 is rotated. At this time, the front end of the manual adjustment screw 4113 is sleeved in the shaft tube 4033, and the shaft tube 4033 can rotate on the I-shaped frame 4032. Therefore, through the internal thread cooperation between the manual adjustment screw 4113 and the internal thread block 4112, the manual adjustment screw 4113 can move back and forth, thereby driving the shaft tube 4033 to move back and forth. The strip groove 4031 limits the movement of the I-shaped frame 4032. The shaft tube 4033 synchronously drives the I-shaped frame 4032 to move, thereby pushing the welding gun adjustment frame 403 to move, and its angle also changes accordingly. At this time, the angle of the welding gun adjustment frame 403 can be adjusted so that the welding head of the argon arc welding gun 404 at the lower end of the welding gun adjustment frame 403 is aligned with the connection end of the riveting part and the riveting plate.

[0042] like Figure 5 As shown, as a further embodiment of the present invention, both ends of the I-beam frame 4032 are square plates, and the inner end face is in contact with the outer end of the welding torch adjustment frame 403.

[0043] By adopting the above technical solution, the above setting can prevent the I-shaped frame 4032 from tilting inside the welding torch adjustment frame 403, ensuring the stability of height adjustment, thereby ensuring the stability of the angle adjustment of the welding torch adjustment frame 403.

[0044] like Figure 5As shown, as a further embodiment of the present invention, a positioning device 412 is installed at the lower end of the pad 402. The positioning device 412 includes a support rod 4121, a spring 4122, a pressure sensor 4123, a push cylinder 4124, and a positioning plate 4125. The upper end of the support rod 4121 is fixedly welded to the lower end of the pad 402. The push cylinder 4124 is assembled inside the support rod 4121. The pressure sensor 4123 is assembled at the output end of the push cylinder 4124. One end of the spring 4122 is connected to the pressure sensor 4123, and the other end of the spring 4122 is fixedly connected to the positioning plate 4125. The inner end of the positioning plate 4125 is set in a trapezoidal arc shape. The pressure sensor 4123 and the push cylinder 4124 are both electrically connected to the controller 7.

[0045] By adopting the above technical solution, the push cylinder 4124 pushes the support rod 4121 downward, the spring 4122 is compressed, and the spring 4122 pushes the positioning plate 4125 downward. The inner end of the positioning plate 4125 is set in a trapezoidal arc shape, so that the positioning plate 4125 can correct and press the position of the riveting part. The pressure sensor 4123 is used to detect the pressure value and transmit the detected signal to the controller 7 to set the upper limit of pressure. When the upper limit of pressure is reached, the push cylinder 4124 is controlled to stop working. The set pressure value can prevent the positioning plate 4125 from applying too much downward pressure, which could damage the riveting part.

[0046] To better demonstrate the processing method of the integrated seamless processing device for sheet metal riveting and welding, this embodiment presents the integrated seamless processing device and method for sheet metal riveting and welding, including the following steps:

[0047] Step 1: Place the rivet plate 410 on the positioning plate 2, and place the rivet on the rivet plate 410 directly opposite the lower end of the positioning plate 4125. The inner end of the positioning plate 4125 is set in a trapezoidal arc shape, so that the upper end of the rivet on the rivet plate 410 is fastened in the slot at the lower end of the positioning plate 4125. The support rod 4121 is pushed down by the push cylinder 4124, the spring 4122 is compressed, and the spring 4122 pushes the positioning plate 4125 down, so that the positioning plate 4125 corrects and presses the position of the rivet. The pressure sensor 4123 is used to detect the pressure value and transmit the detected signal to the controller 7 to set the upper limit of the pressure. When the upper limit of the pressure is reached, the push cylinder 4124 is controlled to stop working. The set pressure value can prevent the positioning plate 4125 from applying too much downward pressure, which may damage the rivet.

[0048] Step 2: Rotate the manual adjustment screw 4113. At this time, the front end of the manual adjustment screw 4113 is fitted inside the shaft tube 4033, and the shaft tube 4033 can rotate on the I-beam frame 4032. Therefore, through the internal thread cooperation between the manual adjustment screw 4113 and the internal thread block 4112, the manual adjustment screw 4113 can move back and forth, thereby driving the shaft tube 4033 to move back and forth. The shaft tube 4033 can synchronously drive the I-beam frame 4032 to move. The I-beam frame 4032 moves in the strip groove 4031, thereby pushing the welding torch adjustment frame 403 to move. The upper end of the welding torch adjustment frame 403 is connected by the shaft 409. Therefore, when the welding torch adjustment frame 403 moves, its angle also changes. At this time, the angle of the welding torch adjustment frame 403 can be adjusted so that the welding head of the argon arc welding torch 404 at the lower end of the welding torch adjustment frame 403 is aligned with the connection end of the riveting part and the riveting plate.

[0049] Step 3: After the rivet is clamped and positioned, the controller 7 controls the servo motor 6 to work. The servo motor 6 drives the second gear 408 to rotate through the linkage of the second gear support frame 407. The rotation of the second gear 408 drives the first gear 406, and the rotation of the first gear 406 drives the first gear support frame 405 to rotate. At this time, the welding pad 402 at the lower end rotates synchronously, and the welding torch adjustment frame 403 rotates synchronously. After the position of the argon arc welding torch 404 in S2 is adjusted, the servo motor 6 drives the second gear 408 to rotate through the linkage. The lower argon arc welding gun 404 is rotated. The controller 7 controls the rotation amount of each rotation, causing the welding pad 402 to rotate 120 degrees. After rotating 120 degrees, the argon arc welding gun 404 is controlled to spot weld one point. After spot welding, it rotates another 120 degrees and spot welds another point. This cycle is repeated to complete three-point spot welding, ensuring the stability of the connection between the rivet and the plate. During spot welding, the positioning plate 4125 in S1 always corrects and presses the position of the rivet. Therefore, during the cooling and shrinkage of the plate after spot welding, the rivet will not be tilted to the side. After the spot welding is completed and cooled, the fixing of the rivet is completed.

[0050] Working principle: First, the riveting plate 410 is placed so that the riveting parts on the riveting plate 410 are positioned directly opposite the lower end of the positioning plate 4125. Then, the push cylinder 4124 is controlled to work, causing the lower positioning plate 4125 to press and correct the position of the riveting parts. The pressure sensor 4123 sends the detected pressure value back to the controller 7 to control the pushing pressure and prevent excessive downward pressure from the positioning plate 4125, which could damage the riveting parts. After the position of the riveting parts is pressed and corrected, the manual adjusting screw 4113 is rotated to adjust the welding torch. The angle of the bracket 403 is adjusted until the welding head of the argon arc welding gun 404 at the lower end of the manually adjusted screw 4113 is aligned with the connection end between the riveting part and the riveting plate. After the welding head position is adjusted, the servo motor 6 drives the second gear 408 to rotate, which in turn drives the lower argon arc welding gun 404 to rotate through the linkage. The controller 7 controls the welding pad 402 to rotate 120 degrees each time, and a spot weld is performed after each 120-degree rotation. This cycle is repeated to complete the three-point spot welding. After the spot welding is completed and cooled, the riveting plate 410 is removed to complete the entire processing process.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sheet metal riveting, welding and integrative traceless processing device, comprising a welding table (1), a positioning plate (2), a supporting frame (3) and a riveting and welding mechanism (4), characterized in that: The positioning plate (2) is fixedly installed on the upper end of the welding table (1), the support frame (3) is fixedly installed on the welding table (1) at the side end of the positioning plate (2), and the riveting and welding mechanism (4) is fixedly installed on the upper end of the support frame (3); the upper end of the support frame (3) is provided with a servo motor assembly frame (5), the front end of the servo motor assembly frame (5) is fixedly provided with a servo motor (6), the side end of the support frame (3) is provided with a controller (7), the servo motor (6) is electrically connected with the controller (7), and the riveting and welding mechanism (4) comprises a welding pad fixing seat (401), a welding pad (402), a welding gun adjusting frame (403) and an argon arc welding gun (404); one end of the welding pad fixing seat (401) is fixedly welded on the support frame (3), a first positioning circular hole (4011) is formed in the center of the welding pad fixing seat (401), a first gear bearing frame (405) is inserted into the first positioning circular hole (4011), a first gear (406) is arranged on the upper end of the welding pad fixing seat (401), the first gear (406) is movably installed on the first gear bearing frame (405), a second gear bearing frame (407) is arranged on the welding pad fixing seat (401) at the side end of the first gear (406), a second gear (408) is movably installed on the upper end of the second gear bearing frame (407), and the second gear (408) is engaged with the first gear (406); the output end of the servo motor (6) is fixedly connected with the center of the second gear (408), and the lower end of the welding pad (402) is further provided with an angle positioning device (411), the angle positioning device (411) comprises a support square plate (4111), an internally-threaded block (4112) and a manually-adjusting screw rod (4113); a strip-shaped groove (4031) is formed in the middle end of the welding gun adjusting frame (403), a I-shaped frame (4032) is fixedly installed in the strip-shaped groove (4031) at the two ends of the welding gun adjusting frame (403), a shaft tube (4033) is movably sleeved on the middle end of the I-shaped frame (4032), the front end of the manually-adjusting screw rod (4113) is sleeved in the shaft tube (4033), the other end of the manually-adjusting screw rod (4113) is rotatably inserted in the internally-threaded block (4112), and the internally-threaded block (4112) is fixedly welded in the support square plate (4111).

2. The sheet metal press riveting and welding integrated traceless processing device according to claim 1, characterized in that: The transverse end of the positioning plate (2) is fixedly welded with an X-axis baffle (21), and the longitudinal end of the positioning plate (2) is fixedly welded with a Y-axis baffle (22).

3. The device according to claim 1, characterized in that: The upper end of the welding pad (402) is fixedly welded on the lower end of the first gear bearing frame (405), the lower end of the welding pad (402) is provided with a shaft rod (409), internally-threaded grooves are formed in the two ends of the shaft rod (409), the welding gun adjusting frame (403) is installed on the shaft rod (409) and is rotatably connected with the shaft rod (409) by being rotatably inserted in the internally-threaded grooves through the through holes of the shaft rod (409); the argon arc welding gun (404) is fixedly installed on the lower end of the welding gun adjusting frame (403).

4. The sheet metal press riveting and welding integrated traceless processing device according to claim 3, characterized in that: The positioning plate (2) is provided with a riveting plate (410) which is placed flat on the positioning plate (2), and the center of the soldering pad (402) is concentric with the riveting piece at the upper end of the riveting plate (410).

5. The sheet metal press riveting and welding integrated traceless processing device according to claim 3, characterized in that: The I-shaped frame (4032) is a square plate at both ends, and the inner end face is attached to the outer side end of the soldering gun adjusting frame (403).

6. The sheet metal press riveting and welding integrated traceless processing device according to claim 3, characterized in that: The lower end of the soldering pad (402) is provided with a positioning device (412), which includes a support rod (4121), a spring (4122), a pressure sensor (4123), a push cylinder (4124) and a positioning pressing plate (4125). The upper end of the support rod (4121) is fixedly welded with the lower end of the soldering pad (402), the push cylinder (4124) is assembled in the support rod (4121), the pressure sensor (4123) is assembled at the output end of the push cylinder (4124), one end of the spring (4122) is connected with the pressure sensor (4123), the other end of the spring (4122) is fixedly connected with the positioning pressing plate (4125), the inner side end of the positioning pressing plate (4125) is provided in a trapezoidal arc shape, and the pressure sensor (4123) and the push cylinder (4124) are electrically connected with the controller (7).

7. The operating method of the sheet metal rivet-shy welding integrated traceless processing device according to any one of claims 1-6, characterized in that: The method comprises the following steps: S1: Place the riveting plate (410) on the positioning plate (2), and place the riveting piece on the riveting plate (410) at a position directly opposite the lower end of the positioning pressing plate (4125). The inner side end of the positioning pressing plate (4125) is provided in a trapezoidal arc shape, so that the upper end of the riveting piece on the riveting plate (410) is buckled in the slot hole at the lower end of the positioning pressing plate (4125). The push cylinder (4124) pushes the support rod (4121) to move downward, the spring (4122) is compressed, the spring (4122) pushes the positioning pressing plate (4125) to move downward, the positioning pressing plate (4125) corrects and presses the position of the riveting piece, the pressure sensor (4123) detects the pressure value and transmits the detected signal to the controller (7), sets the upper limit value of the pressure, and when the upper limit value of the pressure is reached, the push cylinder (4124) stops working, and the set pressure value can prevent the positioning pressing plate (4125) from being pressed downward with excessive force to damage the riveting piece; S2: rotate the manual adjusting screw (4113), at this time the front end of the manual adjusting screw (4113) is sleeved in the shaft pipe (4033), and the shaft pipe (4033) can rotate on the I-shaped frame (4032), so that the manual adjusting screw (4113) can move forward and backward through the cooperation of the internal thread of the manual adjusting screw (4113) and the internal thread block (4112), thereby driving the shaft pipe (4033) to move forward and backward, the shaft pipe (4033) can synchronously drive the I-shaped frame (4032) to move, the I-shaped frame (4032) moves in the strip-shaped groove (4031), so as to drive the welding gun adjusting frame (403) to move, the welding gun adjusting frame (403) is connected through the shaft rod (409) at the upper end, so that the angle of the welding gun adjusting frame (403) changes when the welding gun adjusting frame (403) moves, at this time the angle of the welding gun adjusting frame (403) can be adjusted, so that the welding head of the argon arc welding gun (404) at the lower end of the welding gun adjusting frame (403) is aligned with the connecting end of the rivet and the plate; S3: when the rivet is pressed and positioned, the controller (7) controls the servo motor (6) to work, the servo motor (6) drives the second gear (408) to rotate through the linkage of the second gear bearing frame (407), the second gear (408) drives the first gear (406) to rotate, the first gear (406) drives the first gear bearing frame (405) to rotate, at this time the welding pad (402) at the lower end is synchronously rotated, at this time the welding gun adjusting frame (403) is synchronously rotated, when the position of the argon arc welding gun (404) is adjusted in S2, the servo motor (6) drives the second gear (408) to rotate, and the lower end argon arc welding gun (404) is driven to rotate through the linkage, the controller (7) controls the rotation amount of each rotation to drive the welding pad (402) to rotate by 120 degrees, when the welding pad (402) is rotated by 120 degrees, the argon arc welding gun (404) is controlled to spot weld one point, after spot welding, the welding pad (402) is rotated by 120 degrees again, and one point is spot welded again, so as to complete three-point spot welding, so as to ensure the stability of the connection between the rivet and the plate, and the position of the rivet is corrected and pressed by the positioning pressing plate (4125) in S1 during spot welding, so that the rivet is not deviated during the cooling and shrinking process of the plate after spot welding, and the fixing work of the rivet is completed after the cooling of spot welding.

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