Rotating disc type multi-station automatic machining equipment for silencer and using method of rotating disc type multi-station automatic machining equipment

Abstract

The silencer rotating disc type multi-station automatic machining equipment comprises an equipment box and a rotating disc, the top of the equipment box is rotationally connected with the rotating disc through a bearing, a fixing shell is fixed to the top of the inner wall of the equipment box, and a fixed-angle rotating device is fixed to the inner wall of the fixing shell; the output end of the constant-angle rotating device is fixedly connected with the middle of a rotating disc, fixing tools are fixed to the upper surface of the rotating disc at equal intervals, and two welding devices matched with the fixing tools are sequentially fixed to the upper surface of the equipment box; the fixed-angle rotating device comprises a rotating shaft, a first rotating plate, a shifting groove, a positioning groove, a first servo motor, a second rotating plate, a positioning plate and a shifting column, the rotating shaft is rotationally connected to the middle of the fixing shell through a bearing, the top of the rotating shaft is fixedly connected with the rotating disc, and the first rotating plate is fixed to the upper end of the rotating shaft. And the welding efficiency and the welding effect are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of muffler processing, in particular to a muffler rotary table type multi-station automatic processing equipment and a using method thereof. BACKGROUND

[0002] In the field of muffler processing, the welding quality directly affects the noise reduction performance, structural stability and service life of the muffler. The traditional muffler welding processing adopts a single-station operation mode, that is, the muffler is fixed by manual or simple mechanical device, and then the operator holds a welding tool (such as a flame welding gun) to heat and weld the welding position.

[0003] This traditional processing method has obvious limitations: on the one hand, single-station operation can only process mufflers one by one, and the processes of feeding, welding and discharging are carried out in sequence, which cannot realize multi-process parallel operation, resulting in low overall processing efficiency and difficulty in meeting the needs of large-scale production; on the other hand, when manually operated, the movement track of the welding tool, the heating time and temperature control depend on the experience of the operator, which is prone to uneven heating at the welding position, thereby causing unstable weld quality and possible defects such as virtual welding and missed welding, affecting the product performance of the muffler.

[0004] In addition, although some early automatic welding equipment tries to improve efficiency, it often has problems such as insufficient switching precision of the station and poor flexibility of the welding device adjustment. For example, it is difficult to accurately position the station when rotating, resulting in deviation of the muffler and the welding device; the welding nozzle is usually fixed at an angle, which cannot fully cover the welding area of the muffler, further exacerbating the problem of uneven heating and restricting the improvement of welding effect. Therefore, it is necessary to provide a muffler rotary table type multi-station automatic processing equipment and a using method thereof. SUMMARY

[0005] The present application aims to provide a muffler rotary table type multi-station automatic processing equipment and a using method thereof to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a multi-station welding equipment for mufflers, comprising a device box and a rotary table, the device box is rotatably connected with a rotary table at the top through a bearing, the inner wall top of the device box is fixed with a fixed shell, the inner wall of the fixed shell is fixed with a fixed angle rotating device, and the output end of the fixed angle rotating device is fixedly connected with the middle part of the rotary table, the upper surface of the rotary table is fixed with a fixed tool at equal intervals, and the upper surface of the device box is sequentially fixed with two welding devices matched with the fixed tool.

[0007] Preferably, the fixed angle rotating device comprises a rotating shaft, a first rotating plate, a pushing groove, a positioning groove, a first servo motor, a second rotating plate, a positioning plate and a pushing column, the middle part of the fixed shell is rotationally connected with the rotating shaft through a bearing, the top of the rotating shaft is fixedly connected with the rotating disc, the upper end of the rotating shaft is fixedly connected with the first rotating plate, the outer side of the first rotating plate is sequentially and equidistantly provided with the pushing groove and the positioning groove, the bottom of the fixed shell is fixedly connected with the first servo motor, the output end of the first servo motor is fixedly connected with the second rotating plate through the fixed shell, the upper surface of the second rotating plate is fixedly connected with the positioning plate, the outer edge of the upper surface of the second rotating plate is fixedly connected with the pushing column, and the pushing column is slidably connected with the pushing groove.

[0008] Preferably, the welding device comprises a driving shell, a threaded rod, a second servo motor, an internally-threaded sliding block, a sliding channel, a sliding rod, a connecting plate, a rotating shaft, a U-shaped frame, a fixed ring and a flame nozzle, the top of the equipment box is fixedly connected with the driving shell, the inner wall of the driving shell is rotationally connected with the threaded rod through a bearing, the top of the driving shell is fixedly connected with the second servo motor, the output end of the second servo motor is fixedly connected with the threaded rod, the inner wall of the driving shell is slidably connected with the internally-threaded sliding block, the internally-threaded sliding block is threadedly connected with the threaded rod, one side of the driving shell is provided with the sliding channel, the outer side of the internally-threaded sliding block is fixedly connected with the sliding rod, the sliding rod is slidably connected with the sliding channel, one end of the sliding rod away from the internally-threaded sliding block is fixedly connected with the connecting plate, the end of the connecting plate away from the sliding rod is rotationally connected with the rotating shaft through a bearing, the bottom of the rotating shaft is fixedly connected with the U-shaped frame, the bottom of the U-shaped frame is fixedly connected with the fixed ring, the inner wall of the fixed ring is equidistantly fixedly connected with the flame nozzle.

[0009] Preferably, the welding device further comprises an L-shaped plate, a third servo motor, a rotating rod, a pushing rod, a driving plate and a driving groove, the upper surface of the connecting plate is fixedly connected with the L-shaped plate, the top of the L-shaped plate is fixedly connected with the third servo motor, the output end of the third servo motor is fixedly connected with the rotating rod through the L-shaped plate, one end of the rotating rod is fixedly connected with the pushing rod, the top of the rotating shaft is fixedly connected with the driving plate, one end of the driving plate close to the pushing rod is provided with the driving groove, and the pushing rod is slidably connected with the driving groove.

[0010] Preferably, the end of the positioning plate close to the pushing column is provided with the avoiding groove.

[0011] Preferably, the flame nozzle is arranged in an inclined manner.

[0012] Preferably, the first servo motor, the second servo motor and the third servo motor are all deceleration motors.

[0013] The application also provides a use method of the multi-station welding equipment of the muffler, and the use method comprises the following steps: S1, people first place the muffler in the fixed tooling, the fixed tooling has four, two of which are matched with two welding devices respectively, and the other two are used for feeding and discharging respectively; S2, the second rotating plate is driven to rotate by the first servo motor, the second rotating plate drives the shifting column to rotate, the shifting column slides into the shifting slot, the shifting column shifts the first rotating plate, the first rotating plate rotates, when the shifting column slides into the shifting slot, one end of the first rotating plate is located in the avoiding slot, when the shifting column is separated from the shifting slot, the positioning plate is tightly attached to the positioning slot, the first rotating plate is positioned, the first rotating plate drives the rotating shaft to rotate, the rotating disc is driven to rotate, the fixed tool on the rotating disc rotates 90 degrees, the muffler on the fixed tool rotates to the lower end of the first welding device; S3, the welding device has two, the first one can preheat the muffler, the second one carries out the welding work, so that the muffler is rotated 90 degrees again by the fixed angle rotating device after preheating by the first welding device and enters the lower end of the second welding device to carry out welding, and the welded muffler is rotated to the unloading station again, and the reciprocating is carried out in sequence. S4, when welding, the screw rod is driven to rotate by the second servo motor, the inner threaded sliding block is driven to slide, the inner threaded sliding block drives the connecting plate to move downward through the sliding rod, four flame nozzles on the fixed ring are moved downward to the welding position of the muffler, at this time, the welding position of the muffler can be heated and welded by the flame nozzle, while heating and welding, the rotating rod is driven to rotate by the third servo motor, the shifting rod is driven to rotate, the shifting rod shifts the driving slot, the driving plate drives the rotating shaft to rotate, the third servo motor rotates one circle, the driving plate reciprocating rotates a certain angle, the rotating shaft reciprocating rotates a certain angle, the U-shaped frame rotates, the U-shaped frame drives the flame nozzle in the fixed ring to reciprocating rotate, the flame nozzle can uniformly heat the welding position of the muffler.

[0014] Compared with the prior art, the beneficial effects of the present application are: The people of the present application first place the silencer inside the fixed tool, the fixed tool has four, two of which are matched with two welding devices respectively, and the other two are for feeding and discharging respectively; the first servo motor is rotated to drive the second rotating plate to rotate, so that the second rotating plate drives the shifting column to rotate, and then the shifting column slides into the shifting groove, so that the shifting column shifts the first rotating plate, and the first rotating plate rotates, when the shifting column slides into the shifting groove, one end of the first rotating plate is located in the avoiding groove, and when the shifting column is separated from the shifting groove, the positioning plate is tightly attached to the positioning groove, the first rotating plate is positioned to prevent the first rotating plate from rotating, the first rotating plate drives the rotating shaft to rotate, and then drives the rotating disc to rotate, so that the fixed tool on the rotating disc rotates 90 degrees, so that the silencer on the fixed tool rotates to the lower end of the first welding device; the welding device has two, the first one can preheat the silencer, and the second one can weld, so that the silencer is preheated by the first welding device, and then rotated 90 degrees by the fixed angle rotating device to enter the lower end of the second welding device for welding, and then the welded silencer is rotated to the discharging station again, and the process is repeated; when welding, the second servo motor is rotated to drive the threaded rod to rotate, and then the inner threaded sliding block is driven to slide, so that the inner threaded sliding block drives the connecting plate to move downward through the sliding rod, and then the four flame nozzles on the fixed ring are moved downward to the welding position of the silencer, at this time the welding position of the silencer can be heated and welded by the flame nozzles, at the same time of heating and welding, the third servo motor is rotated to drive the rotating rod to rotate, and then the shifting rod is driven to rotate, so that the shifting rod shifts the driving groove, so that the driving plate drives the rotating shaft to rotate, and one rotation of the third servo motor, the driving plate rotates back and forth by a certain angle, and then the rotating shaft rotates back and forth by a certain angle, and then the U-shaped frame rotates, so that the flame nozzles in the fixed ring of the U-shaped frame rotate back and forth, so that the flame nozzles can uniformly heat the welding position of the silencer, the device is more uniform for heating the welding position of the silencer, improves the welding efficiency and welding effect, and is convenient for people to use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall cross-section structure of the present application; Figure 2 It is a schematic diagram of the fixed angle rotating device structure of the present application; Figure 3 It is a schematic diagram of the fixed tool structure of the present application; Figure 4 It is a schematic diagram of the welding device structure of the present application.

[0016] As shown in the figure, the device comprises a device box 1, a rotating disc 2, a fixed shell 3, a fixed angle rotating device 4, a rotating shaft 41, a first rotating plate 42, a pushing groove 43, a positioning groove 44, a first servo motor 45, a second rotating plate 46, a positioning plate 47, a pushing column 48, a fixed tool 5, a welding device 6, a driving shell 61, a threaded rod 62, a second servo motor 63, an internally-threaded sliding block 64, a sliding channel 65, a sliding rod 66, a connecting plate 67, a rotating shaft 68, a U-shaped frame 69, a fixed ring 610, a flame spraying head 611, an L-shaped plate 612, a third servo motor 613, a rotating rod 614, a pushing rod 615, a driving plate 616, a driving groove 617, and an avoiding groove 7. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0018] Please refer to Figure 1 and Figure 3 , a multi-station welding device for a muffler is shown in the figure, which comprises a device box 1 and a rotating disc 2, the rotating disc 2 is rotatably connected to the top of the device box 1 through a bearing, a fixed shell 3 is fixed to the top inner wall of the device box 1, a fixed angle rotating device 4 is fixed to the inner wall of the fixed shell 3, and the output end of the fixed angle rotating device 4 is fixedly connected to the middle part of the rotating disc 2, fixed tooling 5 are fixedly arranged on the upper surface of the rotating disc 2 at equal intervals, and two welding devices 6 matched with the fixed tooling 5 are fixedly arranged on the upper surface of the device box 1 in sequence.

[0019] Please refer to Figure 1 and Figure 2As shown, the fixed angle rotating device 4 includes a rotating shaft 41, a first rotating plate 42, a pushing groove 43, a positioning groove 44, a first servo motor 45, a second rotating plate 46, a positioning plate 47 and a pushing column 48, the middle part of the fixed shell 3 is rotatably connected with the rotating shaft 41 through a bearing, the top of the rotating shaft 41 is fixedly connected with the rotating disc 2, the upper end of the rotating shaft 41 is fixedly connected with the first rotating plate 42, the outer side of the first rotating plate 42 is sequentially and equidistantly provided with the pushing groove 43 and the positioning groove 44, the bottom of the fixed shell 3 is fixedly connected with the first servo motor 45, the output end of the first servo motor 45 is fixedly connected with the second rotating plate 46 through the fixed shell 3, the upper surface of the second rotating plate 46 is fixedly connected with the positioning plate 47, the outer edge of the upper surface of the second rotating plate 46 is fixedly connected with the pushing column 48, the pushing column 48 is slidably connected with the pushing groove 43, the end of the positioning plate 47 close to the pushing column 48 is provided with an avoiding groove 7, the first servo motor 45 is rotated to drive the second rotating plate 46 to rotate, so that the second rotating plate 46 drives the pushing column 48 to rotate, and then the pushing column 48 slides into the pushing groove 43, the pushing column 48 pushes the first rotating plate 42 to rotate, when the pushing column 48 slides into the pushing groove 43, one end of the first rotating plate 42 is located in the avoiding groove 7, and when the pushing column 48 is separated from the pushing groove 43, the positioning plate 47 is tightly attached to the positioning groove 44, so as to position the first rotating plate 42 and prevent the first rotating plate 42 from rotating, the first rotating plate 42 is rotated to drive the rotating shaft 41 to rotate, and then the rotating disc 2 is driven to rotate, so that the fixed tooling 5 on the rotating disc 2 is rotated by 90 degrees, and the silencer on the fixed tooling 5 is rotated to the lower end of the first welding device 6.

[0020] Please refer to Figure 4As shown in the figure, the welding device 6 comprises a driving shell 61, a threaded rod 62, a second servo motor 63, an internally threaded sliding block 64, a slide 65, a slide rod 66, a connecting plate 67, a rotating shaft 68, a U-shaped frame 69, a fixed ring 610 and flame spray heads 611, the top of the equipment box 1 is fixedly connected with the driving shell 61, the inner wall of the driving shell 61 is rotatably connected with the threaded rod 62 through a bearing, the top of the driving shell 61 is fixedly connected with the second servo motor 63, and the output end of the second servo motor 63 is fixedly connected with the threaded rod 62, the inner wall of the driving shell 61 is slidably connected with the internally threaded sliding block 64, and the internally threaded sliding block 64 is threadedly connected with the threaded rod 62, one side of the driving shell 61 is provided with the slide 65, the outer side of the internally threaded sliding block 64 is fixedly connected with the slide rod 66, and the slide rod 66 is slidably connected with the slide 65, one end of the slide rod 66 away from the internally threaded sliding block 64 is fixedly connected with the connecting plate 67, one end of the connecting plate 67 away from the slide rod 66 is rotatably connected with the rotating shaft 68 through a bearing, the bottom of the rotating shaft 68 is fixedly connected with the U-shaped frame 69, the bottom of the U-shaped frame 69 is fixedly connected with the fixed ring 610, the inner wall of the fixed ring 610 is equidistantly fixedly connected with the flame spray heads 611, the welding device 6 further comprises an L-shaped plate 612, a third servo motor 613, a rotating rod 614, a lever 615, a driving plate 616 and a driving groove 617, the upper surface of the connecting plate 67 is fixedly connected with the L-shaped plate 612, the top of the L-shaped plate 612 is fixedly connected with the third servo motor 613, the output end of the third servo motor 613 is fixedly connected with the rotating rod 614 through the L-shaped plate 612, one end of the rotating rod 614 is fixedly connected with the lever 615, the top of the rotating shaft 68 is fixedly connected with the driving plate 616, one end of the driving plate 616 close to the lever 615 is provided with the driving groove 617, and the lever 615 is slidably connected with the driving groove 617, when welding, the second servo motor 63 is rotated to drive the threaded rod 62 to rotate, thereby driving the internally threaded sliding block 64 to slide, so that the internally threaded sliding block 64 drives the connecting plate 67 to move downward through the slide rod 66, thereby moving the four flame spray heads 611 on the fixed ring 610 downward to the welding position of the muffler, at this time, the welding position of the muffler can be heated and welded through the flame spray heads 611, while heating and welding, the third servo motor 613 is rotated to drive the rotating rod 614 to rotate, thereby driving the lever 615 to rotate, so that the lever 615 drives the driving groove 617 to move, so that the driving plate 616 drives the rotating shaft 68 to rotate, and when the third servo motor 613 rotates one circle, the driving plate 616 reciprocatingly rotates by a certain angle, thereby making the rotating shaft 68 reciprocatingly rotate by a certain angle, thereby making the U-shaped frame 69 rotate, so that the U-shaped frame 69 drives the flame spray heads 611 in the fixed ring 610 to reciprocatingly rotate, so that the flame spray heads 611 can uniformly heat the welding position of the muffler.

[0021] Please refer to Figure 4 As shown in the figure, the flame spray heads 611 are arranged obliquely, so that the flame can accurately point to the welding point of the muffler.

[0022] Please refer to Figure 1 and Figure 4 As shown in the figure, the first servo motor 45, the second servo motor 63 and the third servo motor 613 are all kinds of reduction motors, which are convenient for reducing the output rotating speed and improving the output torque.

[0023] The application also provides a use method of the multi-station welding equipment of the muffler, and the use method comprises the following steps: 1. People first place the muffler in the fixed tool 5, and the fixed tool 5 has four, two of which are matched with two welding devices 6 respectively, and the other two are used for feeding and discharging respectively; 2. The first servo motor 45 is rotated to drive the second rotating plate 46 to rotate, so that the second rotating plate 46 drives the shifting column 48 to rotate, and then the shifting column 48 slides into the shifting groove 43, so that the shifting column 48 drives the first rotating plate 42 to rotate, and when the shifting column 48 slides into the shifting groove 43, one end of the first rotating plate 42 is located in the avoiding groove 7, and when the shifting column 48 is separated from the shifting groove 43, the positioning plate 47 is tightly attached to the positioning groove 44 to position the first rotating plate 42 and prevent the first rotating plate 42 from rotating, the rotating plate 42 drives the rotating shaft 41 to rotate, and then drives the rotating disc 2 to rotate, so that the fixed tool 5 on the rotating disc 2 is rotated by 90 degrees, and the muffler on the fixed tool 5 is rotated to the lower end of the first welding device 6; 3. The welding device 6 has two, the first one can preheat the muffler, and the second one can perform welding work, so that the muffler is preheated by the first welding device 6, and then is rotated by 90 degrees by the fixed angle rotating device 4 to enter the lower end of the second welding device 6 for welding, and then the welded muffler is rotated to the discharging station again, and the process is repeated; 4. During welding, the second servo motor 63 is rotated to drive the threaded rod 62 to rotate, and then drive the inner threaded sliding block 64 to slide, so that the inner threaded sliding block 64 drives the connecting plate 67 to move downward through the sliding rod 66, and then moves the four flame spray heads 611 on the fixed ring 610 downward to the welding position of the muffler, at this time, the welding position of the muffler can be heated and welded by the flame spray head 611, and at the same time of heating and welding, the third servo motor 613 is rotated to drive the rotating rod 614 to rotate, and then drive the shifting rod 615 to rotate, so that the shifting rod 615 drives the driving groove 617 to rotate, so that the driving plate 616 drives the rotating shaft 68 to rotate, and one rotation of the third servo motor 613 drives the driving plate 616 to rotate by a certain angle, and then drives the rotating shaft 68 to rotate by a certain angle, and then drives the U-shaped frame 69 to rotate, so that the U-shaped frame 69 drives the flame spray head 611 in the fixed ring 610 to rotate reciprocatingly, so that the flame spray head 611 can uniformly heat the welding position of the muffler.

[0024] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0025] While the embodiments of the application have been shown and described herein, it is to be understood that the scope of the application, jointly pointed out in the appended claims, is not to be limited to the above-described embodiments but can be otherwise variously changed, modified, replaced, and altered within the principles and spirit of the present application.

Claims

1. A multi-station welding device for silencers, comprising a device housing (1) and a turntable (2), characterized in that: The top of the equipment box (1) is rotatably connected to a turntable (2) via a bearing. A fixed shell (3) is fixed to the top of the inner wall of the equipment box (1). A fixed angle rotating device (4) is fixed to the inner wall of the fixed shell (3). The output end of the fixed angle rotating device (4) is fixedly connected to the middle of the turntable (2). Fixed fixtures (5) are fixed at equal intervals on the upper surface of the turntable (2). Two welding devices (6) that cooperate with the fixed fixtures (5) are fixed sequentially on the upper surface of the equipment box (1).

2. The multi-station welding equipment for a silencer according to claim 1, characterized in that: The fixed-angle rotating device (4) includes a rotating shaft (41), a first rotating plate (42), a groove (43), a positioning groove (44), a first servo motor (45), a second rotating plate (46), a positioning plate (47), and a swivel (48). The rotating shaft (41) is rotatably connected to the middle of the fixed shell (3) via a bearing. The top of the rotating shaft (41) is fixedly connected to the turntable (2). The first rotating plate (42) is fixed at the upper end of the rotating shaft (41). The groove (43) and the positioning groove (44) are sequentially and equidistantly opened on the outer side of the first rotating plate (42). The first servo motor (45) is fixed at the bottom of the fixed shell (3). The output end of the first servo motor (45) passes through the fixed shell (3) and is fixed to the second rotating plate (46). The positioning plate (47) is fixed on the upper surface of the second rotating plate (46). The swivel (48) is fixed at the outer edge of the upper surface of the second rotating plate (46), and the swivel (48) is slidably connected to the groove (43).

3. The multi-station welding equipment for a silencer according to claim 2, characterized in that: The welding device (6) includes a drive housing (61), a threaded rod (62), a second servo motor (63), an internal threaded slider (64), a slide rail (65), a slide bar (66), a connecting plate (67), a rotating shaft (68), a U-shaped frame (69), a fixing ring (610), and a flame nozzle (611). The drive housing (61) is fixed to the top of the equipment box (1). The threaded rod (62) is rotatably connected to the inner wall of the drive housing (61) via a bearing. The second servo motor (63) is fixed to the top of the drive housing (61), and the output end of the second servo motor (63) is fixedly connected to the threaded rod (62). The internal threaded slider (64) is slidably connected to the inner wall of the drive housing (61). 4), and the internal threaded slider (64) is threadedly connected to the threaded rod (62). A slide rail (65) is provided on one side of the drive housing (61). A slide rod (66) is fixed on the outside of the internal threaded slider (64), and the slide rod (66) is slidably connected to the slide rail (65). A connecting plate (67) is fixed at the end of the slide rod (66) away from the internal threaded slider (64). A rotating shaft (68) is rotatably connected to the end of the connecting plate (67) away from the slide rod (66) through a bearing. A U-shaped frame (69) is fixed at the bottom of the rotating shaft (68). A fixing ring (610) is fixed at the bottom of the U-shaped frame (69). Flame nozzles (611) are fixed at equal intervals on the inner wall of the fixing ring (610).

4. The multi-station welding equipment for a silencer according to claim 3, characterized in that: The welding device (6) further includes an L-shaped plate (612), a third servo motor (613), a rotating rod (614), a lever (615), a drive plate (616), and a drive groove (617). The L-shaped plate (612) is fixed on the upper surface of the connecting plate (67). The third servo motor (613) is fixed on the top of the L-shaped plate (612). The output end of the third servo motor (613) passes through the L-shaped plate (612) and is fixed with a rotating rod (614). A lever (615) is fixed on one end of the rotating rod (614). The drive plate (616) is fixed on the top of the rotating shaft (68). A drive groove (617) is opened on one end of the drive plate (616) near the lever (615), and the lever (615) is slidably connected to the drive groove (617).

5. The multi-station welding equipment for a silencer according to claim 3, characterized in that: The positioning plate (47) has a clearance groove (7) at one end near the push post (48).

6. The multi-station welding equipment for a silencer according to claim 2, characterized in that: The flame nozzle (611) is set at an angle.

7. The multi-station welding equipment for a silencer according to claim 1, characterized in that: The first servo motor (45), the second servo motor (63) and the third servo motor (613) are all geared motors.

8. The method of using a multi-station welding equipment for a silencer as described in any one of claims 1-7, characterized in that: The method of use includes: S1. People first place the muffler inside the fixed fixture (5). There are four fixed fixtures (5), two of which are matched with two welding devices (6) respectively, while the other two are used for loading and unloading respectively. S2. The first servo motor (45) rotates to drive the second rotating plate (46) to rotate, so that the second rotating plate (46) drives the pin (48) to rotate, and then the pin (48) slides into the pin groove (43), so that the pin (48) pushes the first rotating plate (42), causing the first rotating plate (42) to rotate. When the pin (48) slides into the pin groove (43), one end of the first rotating plate (42) is located in the clearance groove. When the pin (48) is separated from the pin groove (43), the positioning plate (47) is close to the positioning groove (44) to position the first rotating plate (42) and prevent the first rotating plate (42) from rotating. The rotation of the first rotating plate (42) drives the rotating shaft (41) to rotate, and then drives the turntable (2) to rotate, so that the fixed fixture (5) on the turntable (2) rotates 90 degrees, and the muffler on the fixed fixture (5) rotates to the lower end of the first welding device (6). S3. There are two welding devices (6). The first one can preheat the muffler, and the second one is used for welding. After the muffler is preheated by the first welding device (6), it is rotated 90 degrees again by the fixed angle rotating device (4) to enter the lower end of the second welding device (6) for welding. The welded muffler is then rotated to the unloading station again, and the process is repeated. S4. During welding, the second servo motor (63) rotates to drive the threaded rod (62) to rotate, which in turn drives the internal threaded slider (64) to slide. This causes the internal threaded slider (64) to drive the connecting plate (67) downward through the sliding rod (66), thereby moving the four flame nozzles (611) on the fixing ring (610) downward to the welding point of the muffler. At this time, the flame nozzles (611) can heat and weld the welding point of the muffler. While heating and welding, the third servo motor (613) rotates to drive the rotating rod (614) to rotate, thereby driving the connecting plate (67) to move downward through the sliding rod (66). The lever (615) rotates, causing the lever (615) to move the drive slot (617), causing the drive plate (616) to drive the rotating shaft (68) to rotate, and the third servo motor (613) rotates once. Then the drive plate (616) reciprocates and rotates at a certain angle, which in turn causes the rotating shaft (68) to reciprocate and rotate at a certain angle, which in turn causes the U-shaped frame (69) to rotate, causing the U-shaped frame (69) to drive the flame nozzle (611) in the fixed ring (610) to reciprocate and rotate, so that the flame nozzle (611) can evenly heat the welded part of the silencer.

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