A spot welding machine for the muffler cylinder of a generator set

Abstract

The present invention relates to the technical field of cylinder spot welding, and specifically to a generator set muffler cylinder spot welding machine, comprising a base plate, the upper end of the base plate is fixedly connected to a welding detection mechanism for matching and grinding the cylinder, the welding detection mechanism comprises a connecting plate slidably arranged on the upper end of the base plate, the upper end of the connecting plate is fixedly connected to a support column, a fourth motor is fixedly connected to the support column at a position close to the upper end, a sixth electric telescopic rod is fixedly connected to the transmission shaft end of the fourth motor, the telescopic end of the sixth electric telescopic rod is fixedly connected to a second fixed plate, a plurality of circumferentially arranged seventh electric telescopic rods are arranged on the side of the second fixed plate, and the telescopic ends of the plurality of seventh electric telescopic rods are fixedly connected to a top plate. The present invention has the advantages that during welding, a grinding head can grind the weld, and at the same time, an ultrasonic detector can detect an area where welding is insufficient, thereby controlling the spot welding head to weld the area where welding is insufficient.

Description

Technical Field

[0001] The invention relates to the technical field of barrel spot welding, in particular to a barrel spot welding machine for a muffler of a generator set. Background Art

[0002] Today's society has higher and higher requirements for noise. How to effectively control its noise pollution is a difficult task with great promotion value. Diesel generators will produce a lot of noise when working. In order to reduce the noise of the generator, a muffler needs to be installed on the generator. Among the generator mufflers, the expansion tube muffler has the most obvious muffler effect. The expansion plate and perforated plate of the expansion tube muffler attenuate the sound waves, turning the sound into heat energy and disappearing.

[0003] The existing expansion tube muffler includes a main body tube, with an outlet end and an inlet end welded at both ends of the main body tube respectively, and an expansion plate welded inside the main body tube. The expansion plate is a rotating shell structure with a cross-section gradually decreasing from one end to the other end. When welding the expansion cavity in the prior art, the end of the expansion plate is first polished and then placed into the main body tube. Workers hold a welding gun and insert it into the main body tube for welding. Summary of the invention

[0004] The technical problem to be solved by the present invention is that in the prior art, workers use handheld welding guns to weld the inner wall of the main tube and the expansion cavity, and the welding accuracy is low. In order to improve the silencer performance of the silencer, the weld needs to be polished smooth. The prior art uses a manual handheld annular polishing rod for polishing. If the polishing is too deep, it will cause gaps in the weld and reduce the silencer performance. The existing polishing device cannot ensure that the welding area of ​​the inner wall of the main tube is completely fitted with the welding end of the expansion cavity.

[0005] The present invention adopts the following technical scheme to solve the above-mentioned technical problems: a spot welding machine for a muffler cylinder of a generator set is provided, comprising a base plate, the upper end of the base plate is fixedly connected to a welding detection mechanism for matching and grinding the cylinder, the welding detection mechanism comprises a connecting plate slidably arranged on the upper end of the base plate, the upper end of the connecting plate is fixedly connected to a support column, a fourth motor is fixedly connected to the support column at a position close to the upper end, a sixth electric telescopic rod is fixedly connected to the transmission shaft end of the fourth motor, the telescopic end of the sixth electric telescopic rod is fixedly connected to a second fixed plate, a plurality of circumferentially arranged seventh electric telescopic rods are arranged on the side of the second fixed plate, the telescopic ends of the plurality of the seventh electric telescopic rods are fixedly connected to a top plate, the outer end surfaces of the plurality of the top plates are arc structures, a rotating clamping mechanism for clamping the cylinder is arranged on the upper end of the base plate, and a matching and grinding mechanism for spot welding and grinding the cylinder is fixedly connected to the upper end of the base plate.

[0006] Preferably, a first empty groove is opened at one end of the second fixed plate, an eighth electric telescopic rod is fixedly connected in the first empty groove, the telescopic end of the eighth electric telescopic rod is fixedly connected to a containing shell, one side of the containing shell is an open structure, a fifth motor is fixedly arranged in the containing shell, a transmission shaft end of the fifth motor passes through the open end of the containing shell, and a grinder for grinding the cylinder and the expansion plate is fixedly connected to the transmission shaft end of the fifth motor.

[0007] Preferably, the grinder includes a grinding rod fixedly arranged at the end of the fifth motor transmission shaft, a group of second empty grooves is opened on the side of the grinding rod, a group of second empty grooves consists of a number of second empty grooves arranged equidistantly, springs are respectively arranged in a number of the second empty grooves, ends of a number of the springs are respectively fixedly connected with pressure sensors, ends of a number of the pressure sensors are fixedly connected with top blocks, ends of a number of the top blocks are arcuate structures, and the end of the second fixed disk is fixedly connected with the first rotating roller.

[0008] Preferably, the end of the grinding rod is fixedly connected to a second rotating roller, the side of the first rotating roller is fixedly connected to a multi-stage electric telescopic rod, and the side of the second rotating roller is provided with a guide groove that slidably cooperates with the telescopic end of the multi-stage electric telescopic rod.

[0009] Preferably, two symmetrically distributed second limit grooves are provided at the upper end of the base plate, and a third motor is fixedly connected to the two second limit grooves respectively, and the transmission shaft ends of the two third motors are fixedly connected to the third motors respectively, and the transmission shaft ends of the two third motors are fixedly connected to the second threaded shafts respectively, and second limit blocks are slidably fitted in the two second limit grooves, and the two second limit blocks are respectively threadedly fitted with the second threaded shafts, and the upper ends of the two second limit blocks are fixedly connected to the connecting plate.

[0010] Preferably, the fitting and grinding mechanism includes a fixed plate slidably arranged on the upper end of the base plate, a first motor is fixedly arranged in the fixed plate, a second electric telescopic rod is fixedly connected to the transmission shaft end of the first motor, a telescopic end of the second electric telescopic rod is fixedly connected to the first fixed plate, four placement grooves are symmetrically arranged on the side of the first fixed plate, third electric telescopic rods are rotatably arranged in two symmetrically arranged placement grooves, two telescopic ends of the third electric telescopic rods are respectively fixedly connected to grinding heads, and fifth electric telescopic rods are rotatably arranged in the other two placement grooves.

[0011] Preferably, the sides of the two fifth electric telescopic rods and the third electric telescopic rod are respectively fixedly connected with slide rails, the first fixed plate is respectively provided with fourth electric telescopic rods in the placement grooves, the telescopic ends of the four fourth electric telescopic rods are respectively fixedly connected with matching bodies, the four matching bodies are respectively matched with the slide rails for sliding limit, the ends of the two grinding heads are elliptical structures, and the telescopic ends of the two fifth electric telescopic rods are respectively fixedly connected with ultrasonic detectors and spot welding heads.

[0012] Preferably, a first limit groove is opened at the upper end of the base plate, a second motor is fixedly connected in the first limit groove, a first threaded shaft is fixedly connected to the transmission shaft end of the second motor, a first limit block is slidably fitted in the first limit groove, the first limit block and the first threaded shaft are arranged through threaded fitting, and the first limit block is fixedly connected to the fixed plate.

[0013] Preferably, the rotating clamping mechanism includes a rotating groove opened at the upper end of the bottom plate, a rotating plate is rotatably arranged in the rotating groove, the upper end of the rotating plate is fixedly connected to a fixed shell by a steel rod, a plurality of groups of circumferentially arranged first electric telescopic rods are fixedly connected in the fixed shell, each group of the first electric telescopic rods is composed of a plurality of equidistantly arranged first electric telescopic rods, and the telescopic ends of the plurality of first electric telescopic rods are respectively fixedly connected with anti-slip plates.

[0014] Preferably, a threaded hole is provided on one side of the base plate, a matching groove is provided on the side surface of the rotating plate at a position corresponding to the threaded hole, a threaded rod is matched in the threaded hole, and an end of the threaded rod is slidably matched with the matching groove.

[0015] Compared with the prior art, the present invention provides a generator set muffler barrel spot welding machine, which has the following beneficial effects:

[0016] 1. The generator set muffler cylinder spot welding machine uses a rotating grinding rod to grind the welding area of ​​the inner wall of the cylinder. The grinding thickness can be controlled by the value of the pressure sensor. During the grinding process, the multi-stage electric telescopic rod is extended, and the telescopic end of the multi-stage electric telescopic rod is inserted into the guide groove, thereby supporting the grinding rod and improving the stability of the grinding rod during grinding. After the grinding of the welding area inside the cylinder is completed, the cylinder is removed, and the expansion plate is placed in the fixed shell and fixedly clamped. After that, the eighth electric telescopic rod is extended by a length of the grinding rod diameter to grind the end of the expansion plate. During grinding, the value of the pressure sensor is ensured to be consistent with the value when grinding the cylinder, so as to ensure that the inner wall of the cylinder after grinding and the outer side of the expansion plate are matched, thereby improving the quality of welding.

[0017] 2. The generator set muffler cylinder spot welding machine places the inside of the expansion plate on the side of the second fixed plate, extends several seventh electric telescopic rods to fix the expansion plate, and then starts the third motor to drive the expansion plate to move toward the position of the cylinder. When the expansion plate moves to the welding area of ​​the inner wall of the cylinder, it stops moving to ensure that there will be no scratches during the fitting process of the expansion plate and the cylinder, thereby improving the welding quality of the device.

[0018] 3. The generator muffler barrel spot welding machine can stably weld the barrel and the expansion plate in all directions under the drive of the first motor during welding. The grinding head can grind the weld. At the same time, the ultrasonic detector can detect the insufficiently welded area, thereby controlling the spot welding head to weld the insufficiently welded area, ensuring that the joint between the expansion plate and the barrel can be completely welded while being polished smooth. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a cross-sectional view of the present invention;

[0021] Figure 3 Partial cross-section of the present invention Figure 1 ;

[0022] Figure 4 Partial cross-section of the present invention Figure 2 ;

[0023] Figure 5 Partial cross-section of the present invention Figure 3 ;

[0024] Figure 6 It is a cross-sectional view of the fixing plate of the present invention;

[0025] Figure 7 for Figure 2 A magnified image of point A;

[0026] Figure 8 for Figure 5 Enlarged view of point B.

[0027] In the figure: 1, bottom plate; 2, rotating clamping mechanism; 3, laminating and grinding mechanism; 4, welding detection mechanism; 21, rotating groove; 22, rotating plate; 23, fixed shell; 24, first electric telescopic rod; 25, anti-skid plate; 26, threaded rod; 27, threaded hole; 28, matching groove; 31, first motor; 32, fixed plate; 33, second motor; 34, first limit block; 35, first limit groove; 36, first threaded shaft; 37, second electric telescopic rod; 38, first fixed plate; 39, placement groove; 310, third electric telescopic rod; 311, fourth electric telescopic rod; 312, matching body; 313, grinding head; 314, slide rail; 315, ultrasonic detector; 316, fifth Electric telescopic rod; 317, spot welding head; 41, second limiting groove; 42, second threaded shaft; 43, second limiting block; 44, connecting plate; 45, third motor; 46, grinder; 47, fourth motor; 48, sixth electric telescopic rod; 49, second fixed plate; 410, seventh electric telescopic rod; 411, top plate; 412, support column; 413, first rotating roller; 414, first empty slot; 415, eighth electric telescopic rod; 416, accommodating shell; 417, fifth motor; 418, multi-stage electric telescopic rod; 461, grinding rod; 462, top block; 463, spring; 464, second empty slot; 465, second rotating roller; 466, guide slot; 467, pressure sensor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] See also Figure 1 - Figure 8 A spot welding machine for a muffler cylinder of a generator set comprises a base plate 1, and a welding detection mechanism 4 for performing matching grinding on the cylinder is fixedly connected to the upper end of the base plate 1.

[0030] In this embodiment, the welding detection mechanism 4 includes a connecting plate 44 slidably arranged at the upper end of the base plate 1, the upper end of the connecting plate 44 is fixedly connected to a support column 412, a fourth motor 47 is fixedly connected to the support column 412 at a position close to the upper end, a sixth electric telescopic rod 48 is fixedly connected to the transmission shaft end of the fourth motor 47, the telescopic end of the sixth electric telescopic rod 48 is fixedly connected to a second fixed plate 49, a plurality of circumferentially arranged seventh electric telescopic rods 410 are provided on the side of the second fixed plate 49, the telescopic ends of the plurality of the seventh electric telescopic rods 410 are fixedly connected to a top plate 411, and the outer end surfaces of the plurality of the top plates 411 are arc structures.

[0031] A first slot 414 is provided at one end of the second fixed plate 49, an eighth electric telescopic rod 415 is fixedly connected in the first slot 414, a telescopic end of the eighth electric telescopic rod 415 is fixedly connected to a containing shell 416, one side of the containing shell 416 is an open structure, a fifth motor 417 is fixedly provided in the containing shell 416, a transmission shaft end of the fifth motor 417 passes through the open end of the containing shell 416, and a grinder 46 for grinding the cylinder and the expansion plate is fixedly connected to the transmission shaft end of the fifth motor 417.

[0032] The grinder 46 includes a grinding rod 461 fixedly set on the end of the transmission shaft of the fifth motor 417, and a group of second empty grooves 464 are opened on the side of the grinding rod 461, and a group of second empty grooves 464 is composed of a plurality of equally spaced second empty grooves 464, and a spring 463 is respectively arranged in a plurality of the second empty grooves 464, and the ends of a plurality of the springs 463 are respectively fixedly connected with pressure sensors 467, and the ends of a plurality of the pressure sensors 467 are fixedly connected with top blocks 462, and the ends of a plurality of the top blocks 462 are arc-surface structures, and the end of the second fixed disk 49 is fixedly connected with the first rotating roller 413.

[0033] The end of the grinding rod 461 is fixedly connected to a second rotating roller 465, the side of the first rotating roller 413 is fixedly connected to a multi-stage electric telescopic rod 418, and the side of the second rotating roller 465 is provided with a guide groove 466 that slidably cooperates with the telescopic end of the multi-stage electric telescopic rod 418.

[0034] Two symmetrically distributed second limiting grooves 41 are provided at the upper end of the base plate 1, and a third motor 45 is fixedly connected to the two second limiting grooves 41 respectively, and the transmission shaft ends of the two third motors 45 are fixedly connected to the third motors 45 respectively, and the transmission shaft ends of the two third motors 45 are fixedly connected to the second threaded shaft 42 respectively, and a second limiting block 43 is slidably fitted in the two second limiting grooves 41, and the two second limiting blocks 43 are respectively threadedly fitted with the second threaded shaft 42, and the upper ends of the two second limiting blocks 43 are fixedly connected to the connecting plate 44.

[0035] Specifically, the fourth motor 47 and the fifth motor 417 enable the rotating grinding rod 461 to grind the welding area of ​​the inner wall of the cylinder. The grinding thickness can be controlled by the value of the pressure sensor 467. During the grinding process, the multi-stage electric telescopic rod 418 is extended, and the telescopic end of the multi-stage electric telescopic rod 418 is inserted into the guide groove 466, thereby supporting the grinding rod 461 and improving the stability of the grinding rod 461 during grinding.

[0036] In this embodiment, a rotating clamping mechanism 2 for clamping the cylinder is provided at the upper end of the base plate 1, and the rotating clamping mechanism 2 includes a rotating groove 21 opened at the upper end of the base plate 1, and a rotating plate 22 is rotatably provided in the rotating groove 21, and the upper end of the rotating plate 22 is fixedly connected to a fixed shell 23 through a steel rod, and a plurality of groups of circumferentially arranged first electric telescopic rods 24 are fixedly connected in the fixed shell 23, and each group of the first electric telescopic rods 24 is composed of a plurality of equidistantly arranged first electric telescopic rods 24, and the telescopic ends of the plurality of first electric telescopic rods 24 are respectively fixedly connected with anti-slip plates 25.

[0037] A threaded hole 27 is formed on one side of the base plate 1 , and a matching groove 28 is formed on the side of the rotating plate 22 at a position corresponding to the threaded hole 27 . A threaded rod 26 is matched in the threaded hole 27 , and the end of the threaded rod 26 is slidably matched with the matching groove 28 .

[0038] Specifically, the cylinder of the muffler is placed in the fixed shell 23, and then a plurality of first electric telescopic rods 24 are extended simultaneously so that the anti-slide plate 25 can fix and clamp the cylinder.

[0039] In this embodiment, the upper end of the base plate 1 is fixedly connected to a fitting and grinding mechanism 3 for spot welding and grinding the cylinder body, and the fitting and grinding mechanism 3 includes a fixed plate 32 slidably arranged at the upper end of the base plate 1, and a first motor 31 is fixedly arranged in the fixed plate 32, and a second electric telescopic rod 37 is fixedly connected to the transmission shaft end of the first motor 31, and the telescopic end of the second electric telescopic rod 37 is fixedly connected to a first fixed plate 38, and four placement grooves 39 are symmetrically arranged on the side of the first fixed plate 38, and third electric telescopic rods 310 are respectively rotatably arranged in two symmetrically arranged placement grooves 39, and the telescopic ends of the two third electric telescopic rods 310 are respectively fixedly connected with grinding heads 313, and fifth electric telescopic rods 316 are respectively rotatably arranged in the other two placement grooves 39.

[0040] The sides of the two fifth electric telescopic rods 316 and the third electric telescopic rod 310 are respectively fixedly connected with slide rails 314, the first fixed plate 38 is respectively provided with fourth electric telescopic rods 311 in the placement groove 39, the telescopic ends of the four fourth electric telescopic rods 311 are respectively fixedly connected with matching bodies 312, the four matching bodies 312 are respectively slidably limited with the slide rails 314, the ends of the two grinding heads 313 are elliptical structures, and the telescopic ends of the two fifth electric telescopic rods 316 are respectively fixedly connected with ultrasonic detectors 315 and spot welding heads 317.

[0041] A first limiting groove 35 is provided at the upper end of the base plate 1, a second motor 33 is fixedly connected in the first limiting groove 35, a first threaded shaft 36 is fixedly connected to the transmission shaft end of the second motor 33, a first limiting block 34 is slidably fitted in the first limiting groove 35, the first limiting block 34 and the first threaded shaft 36 are arranged by threaded fitting, and the first limiting block 34 is fixedly connected to the fixing plate 32.

[0042] Specifically, the third electric telescopic rod 310 and the fifth electric telescopic rod 316 are extended and retracted so that the grinding head 313, the ultrasonic detector 315 and the spot welding head 317 are aligned with the welding area. During welding, the spot welding head 317, driven by the first motor 31, can stably perform all-round welding on the cylinder and the expansion plate. While welding, the grinding head 313 can grind the weld, and at the same time, the ultrasonic detector 315 can detect areas where welding is insufficient.

[0043] When in use, first, place the cylinder of the muffler in the fixed shell 23, then extend several first electric telescopic rods 24 at the same time, so that the anti-slide plate 25 fixes and clamps the cylinder, and then start the two third motors 45. The two third motors 45 drive the second limit block 43 to move along the second limit groove 41 through the second threaded shaft 42. When the second fixed plate 49 moves to the predetermined position, extend the sixth electric telescopic rod 48 to move the grinder 46 to the welding area of ​​the inner wall of the cylinder, and then extend the eighth electric telescopic rod 415, and start the fourth motor 47 and the fifth motor 417 at the same time, so that the rotating grinding rod 461 grinds the welding area of ​​the inner wall of the cylinder. The value of the pressure sensor 467 can be used to determine the value of the pressure sensor 467. To control the grinding thickness, during the grinding process, the multi-stage electric telescopic rod 418 is extended, and the telescopic end of the multi-stage electric telescopic rod 418 is inserted into the guide groove 466, thereby supporting the grinding rod 461 and improving the stability of the grinding rod 461 during grinding. After the grinding of the welding area inside the cylinder is completed, the cylinder is removed, and the expansion plate is placed in the fixed shell 23 and fixedly clamped. Then, the eighth electric telescopic rod 415 is extended by a length of the diameter of the grinding rod 461 to grind the end of the expansion plate. During grinding, the value of the pressure sensor 467 is ensured to be consistent with the value when the cylinder is ground, so as to ensure that the inner wall of the cylinder after grinding and the outer side of the expansion plate are matched, thereby improving the quality of welding.

[0044] After the grinding of both is completed, the cylinder is first placed in the fixed shell 23 for fixed clamping, and then the inside of the expansion plate is placed on the side of the second fixed plate 49, and several seventh electric telescopic rods 410 are extended to fix the expansion plate, and then the third motor 45 is started to drive the expansion plate to move to the position of the cylinder. When the expansion plate moves to the welding area of ​​the inner wall of the cylinder, it stops moving to ensure that there is no scratch during the fitting of the expansion plate and the cylinder, thereby improving the welding quality of the device. After the cylinder and the expansion plate are fixed, the second motor 33 is started to drive the fixed plate 32 to move to a position close to the cylinder, and the second electric telescopic rod 37 is extended to make the first fixed plate 3 8 moves to a position close to the welding area, and then extends the third electric telescopic rod 310 and the fifth electric telescopic rod 316 to align the grinding head 313, the ultrasonic detector 315 and the spot welding head 317 with the welding area. During welding, the spot welding head 317 can stably weld the cylinder and the expansion plate in all directions under the drive of the first motor 31. While welding, the grinding head 313 can grind the weld. At the same time, the ultrasonic detector 315 can detect the insufficiently welded area, thereby controlling the spot welding head 317 to weld the insufficiently welded area, ensuring that the joint between the expansion plate and the cylinder can be completely welded while being polished smooth.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A generator set muffler barrel spot welding machine, comprising a bottom plate (1), characterized in that: The upper end of the base plate (1) is fixedly connected to a welding detection mechanism (4) for performing matching grinding on the cylinder body, the welding detection mechanism (4) comprising a connecting plate (44) slidably arranged on the upper end of the base plate (1), the upper end of the connecting plate (44) is fixedly connected to a support column (412), a fourth motor (47) is fixedly connected inside the support column (412) at a position close to the upper end, a sixth electric telescopic rod (48) is fixedly connected to the transmission shaft end of the fourth motor (47), a telescopic end of the sixth electric telescopic rod (48) is fixedly connected to a second fixed plate (49), a side surface of the second fixed plate (49) is provided with a plurality of circumferentially arranged seventh electric telescopic rods (410), and the plurality of seventh electric telescopic rods (410) are fixedly connected to the support column (412) at a position close to the upper end. ) is fixedly connected to a top plate (411) at its telescopic end, the outer end surfaces of several of the top plates (411) being of an arc structure, a rotating clamping mechanism (2) for clamping the cylinder is provided at the upper end of the bottom plate (1), a fitting and grinding mechanism (3) for spot welding and grinding the cylinder is fixedly connected to the upper end of the bottom plate (1), a first empty slot (414) is provided at one end of the second fixed plate (49), an eighth electric telescopic rod (415) is fixedly connected in the first empty slot (414), a telescopic end of the eighth electric telescopic rod (415) is fixedly connected to a containing shell (416), one side of the containing shell (416) being of an open structure, a fifth motor (417) is fixedly provided in the containing shell (416), and the fifth motor The transmission shaft end of the fifth motor (417) passes through the open end of the accommodating shell (416), the transmission shaft end of the fifth motor (417) is fixedly connected to a grinder (46) for grinding the cylinder and the expansion plate, the grinder (46) comprises a grinding rod (461) fixedly arranged at the transmission shaft end of the fifth motor (417), a group of second empty slots (464) is opened on the side of the grinding rod (461), a group of second empty slots (464) is composed of a plurality of second empty slots (464) arranged at equal intervals, a plurality of second empty slots (464) are respectively provided with springs (463), the ends of a plurality of the springs (463) are respectively fixedly connected to pressure sensors (467), and the ends of a plurality of the pressure sensors (467) are fixedly connected There is a top block (462), the ends of several of the top blocks (462) are of cambered structure, the end of the second fixed disk (49) is fixedly connected to a first rotating roller (413), the laminating and grinding mechanism (3) comprises a fixed plate (32) slidably arranged at the upper end of the bottom plate (1), a first motor (31) is fixedly arranged in the fixed plate (32), a second electric telescopic rod (37) is fixedly connected to the transmission shaft end of the first motor (31), a telescopic end of the second electric telescopic rod (37) is fixedly connected to the first fixed disk (38), four placement grooves (39) are symmetrically arranged on the side surface of the first fixed disk (38), and third electric telescopic rods (310) are rotatably arranged in two of the symmetrically arranged placement grooves (39), respectively.The telescopic ends of the two third electric telescopic rods (310) are respectively fixedly connected to a grinding head (313), and the other two placement grooves (39) are respectively rotatably provided with a fifth electric telescopic rod (316).

2. A generator muffler barrel spot welding machine according to claim 1, characterized in that: The end of the grinding rod (461) is fixedly connected to a second rotating roller (465), the side of the first rotating roller (413) is fixedly connected to a multi-stage electric telescopic rod (418), and the side of the second rotating roller (465) is provided with a guide groove (466) that slidably cooperates with the telescopic end of the multi-stage electric telescopic rod (418).

3. The generator muffler barrel spot welding machine according to claim 1, characterized in that: The upper end of the bottom plate (1) is provided with two symmetrically distributed second limiting grooves (41), the two second limiting grooves (41) are respectively fixedly connected with a third motor (45), the transmission shaft ends of the two third motors (45) are respectively fixedly connected with the third motor (45), the transmission shaft ends of the two third motors (45) are respectively fixedly connected with a second threaded shaft (42), the two second limiting grooves (41) are slidably fitted with a second limiting block (43), the two second limiting blocks (43) are respectively threadably fitted with the second threaded shaft (42), and the upper ends of the two second limiting blocks (43) are fixedly connected with the connecting plate (44).

4. The generator muffler barrel spot welding machine according to claim 1, characterized in that: The sides of the two fifth electric telescopic rods (316) and the third electric telescopic rod (310) are respectively fixedly connected to a slide rail (314); the first fixed plate (38) is respectively provided with a fourth electric telescopic rod (311) in a placement groove (39); the telescopic ends of the four fourth electric telescopic rods (311) are respectively fixedly connected to a matching body (312); the four matching bodies (312) are respectively slidably limited with the slide rail (314); the ends of the two grinding heads (313) are elliptical structures; the telescopic ends of the two fifth electric telescopic rods (316) are respectively fixedly connected to an ultrasonic detector (315) and a spot welding head (317).

5. The generator muffler barrel spot welding machine according to claim 1, characterized in that: A first limiting groove (35) is provided at the upper end of the bottom plate (1), a second motor (33) is fixedly connected in the first limiting groove (35), a first threaded shaft (36) is fixedly connected to the transmission shaft end of the second motor (33), a first limiting block (34) is slidably fitted in the first limiting groove (35), the first limiting block (34) and the first threaded shaft (36) are arranged by threaded fitting, and the first limiting block (34) is fixedly connected to the fixing plate (32).

6. A generator muffler barrel spot welding machine according to claim 1, characterized in that: The rotating clamping mechanism (2) comprises a rotating groove (21) provided at the upper end of the bottom plate (1), a rotating plate (22) being rotatably arranged in the rotating groove (21), the upper end of the rotating plate (22) being fixedly connected to a fixed shell (23) via a steel rod, a plurality of groups of circumferentially arranged first electric telescopic rods (24) being fixedly connected in the fixed shell (23), each group of the first electric telescopic rods (24) comprising a plurality of equidistantly arranged first electric telescopic rods (24), and the telescopic ends of the plurality of the first electric telescopic rods (24) being respectively fixedly connected to anti-slip plates (25).

7. A generator muffler barrel spot welding machine according to claim 6, characterized in that: A threaded hole (27) is provided on one side of the bottom plate (1), a matching groove (28) is provided on the side of the rotating plate (22) at a position corresponding to the threaded hole (27), a threaded rod (26) is provided in the threaded hole (27), and an end of the threaded rod (26) is slidably matched with the matching groove (28).

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