Engine silencer shell welding device

Abstract

An engine silencer shell welding device comprises a base, a bearing assembly and a welding assembly. The bearing assembly comprises two bearing frames which are installed at the two ends of the base, the distance between the two bearing frames is adjustable, limiting plates which move vertically are arranged on the bearing frames, and the limiting plates are provided with two limiting rods which move in the opposite directions and are used for limiting the shell; the welding assembly comprises two welding modules which are arranged at the two ends of the base correspondingly, the distance between the two welding modules is adjustable, each welding module comprises a gear ring which is arranged on the outer side of the bearing frame and rotates around the axis of the gear ring, and two welding guns which are symmetrically arranged and move along the radius of the gear ring are installed on the side face of each gear ring and used for welding the shell. Vertical plates are arranged at the two ends of the bearing frame in the length direction, grooves are formed in the side faces of the vertical plates, vertical rods are arranged in the grooves, the two ends of the limiting plate are located in the grooves and arranged on the vertical rods in a sleeving mode, first springs are further arranged on the vertical rods in a sleeving mode, and the two ends of the first springs abut against the limiting plate and the tops of the grooves respectively and are in a compressed state all the time. And the shell can be continuously and automatically welded, and the phenomenon of missing welding is avoided as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a welding device for an engine muffler shell. Background Art

[0002] The engine muffler is a device designed and manufactured to eliminate gas dynamic noise. It is mainly installed on the engine exhaust pipe or in the intake and exhaust manifolds. When producing the engine muffler, the main components need to be installed inside the shell, and then a cover is welded to both ends of the shell. The cover is provided with pipes to facilitate connection with the engine exhaust pipe. Depending on the vehicle model, the structure of the engine muffler shell will also be adaptively changed, but its cross-section is basically a smooth closed curve. Therefore, in the prior art, the muffler shell and the cover are usually manually aligned, and the shell and the cover are first connected by spot welding, and then welding is performed. During the welding process, since the welding trajectory is a closed curve, the position needs to be constantly adjusted during welding, which may lead to welding leaks and affect the sealing of the muffler. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the related prior art, the present application provides an engine muffler shell welding device, which can automatically and continuously weld the shell to avoid the occurrence of welding leaks as much as possible, and has strong practicality.

[0004] In order to achieve the above purpose, the utility model adopts the following technologies:

[0005] An engine muffler shell welding device comprises a base, a bearing assembly and a welding assembly.

[0006] The bearing assembly includes two bearing frames installed at both ends of the base with adjustable spacing, the bearing frames are provided with limit plates that move in the vertical direction, and two limit rods that move toward each other are provided at both ends of the limit plates for limiting the outer shell; the welding assembly includes two welding modules that are respectively arranged at both ends of the base with adjustable spacing, the welding module includes a gear ring that is arranged on the outside of the bearing frame and rotates around its own axis, and two symmetrically arranged welding guns that move along their radius are installed on the side of the gear ring for welding the outer shell.

[0007] Furthermore, vertical plates are provided at both ends of the load-bearing frame in the length direction, grooves are provided on the sides of the vertical plates, vertical rods are provided in the grooves, both ends of the limit plates are located in the grooves and are sleeved on the vertical rods, a first spring is also sleeved on the vertical rods, both ends of the first spring respectively abut against the limit plates and the top of the grooves, and are always in a compressed state.

[0008] Furthermore, the top surface of the limit plate is provided with two symmetrically arranged through grooves that penetrate up and down along its length direction. The upper end of the limit rod is slidably fitted in the through groove, and two retaining rings are provided at the upper end of the limit rod, which respectively contact the upper and lower surfaces of the limit plate. The top surface of the support frame is also provided with two symmetrically arranged limit grooves along its length direction. The lower end of the limit rod passes through the limit groove and is penetrated into the moving block. The moving blocks are respectively connected to the two moving ends of the bidirectional linear mechanism, and the bidirectional linear mechanism is installed on the support frame.

[0009] Furthermore, the base is provided with a slide groove along its length direction, and a guide rod is provided in the slide groove along its length direction, and a supporting frame is slidably fitted in the slide groove and sleeved on the guide rod, and the supporting frame is locked with screws.

[0010] Furthermore, the ring gear meshes with the gear, the gear sleeve is arranged on the transmission shaft, the transmission shaft is rotatably mounted on the support plate and connected to the output end of the motor, the motor is mounted on the support plate, the support plate is mounted on the base, the ring gear is rotatably mounted on the support ring, the inner wall of the support ring is provided with a bracket, one of the brackets is mounted on the base, another bracket is mounted on one of the carrier frames, and a side frame is provided, one of the gears is rotatably mounted on the side frame, and the transmission shaft passes through the side frame, a plurality of spaced key grooves are provided on the circumferential side of the transmission shaft along its axial direction, a plurality of key pins are provided on the inner wall of one of the gears along the circumferential direction, and the key pins are slidably fitted in the key grooves.

[0011] Furthermore, the side wall of the gear ring is provided with two symmetrically arranged convex plates, the welding gun is inserted into the convex plates, the upper end of the welding gun is also installed on the connecting plate, a connecting rod is provided on the connecting plate, the connecting rod is inserted into the convex plate, and a retaining ring is provided at the lower end, a second spring is also sleeved on the connecting rod, the two ends of the second spring respectively abut against the convex plate and the retaining ring, and are always in a compressed state, a detachable connecting block is also provided at the lower end of the connecting rod, and a ball rotating around its own spherical center is provided at the end of the connecting block for contacting the outer shell.

[0012] Furthermore, recesses are provided at one end of the base and at both sides in the length direction for passing the gear ring.

[0013] The beneficial effects of the utility model are as follows: a bearing frame is used to support the muffler shell, and the shell is limited by a limiting plate and a limiting rod, so that it can adapt to muffler shells of different shapes; and the shell is welded by a welding gun that can move along the radius of the gear ring, which can not only weld the shell automatically and uninterruptedly, but also adapt to muffler shells of different shapes, and avoid the occurrence of welding leaks as much as possible; one of the bearing frames can also move along the length direction of the base, and one of the welding modules can also move synchronously, so as to adapt to muffler shells of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0016] Figure 2 It is a three-dimensional schematic diagram of a carrier frame according to an embodiment of the present application.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the welding assembly according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0019] like Figure 1-Figure 3 As shown, this example provides an engine muffler shell welding device, including: a base 100, a bearing assembly 200, and a welding assembly 300.

[0020] The bearing assembly 200 includes two bearing frames 201 installed at both ends of the base 100 with adjustable spacing, the bearing frames 201 are provided with limit plates 202 that move in the vertical direction, and two limit rods 203 that move toward each other are provided at both ends of the limit plates 202, which are used to limit the circumferential side of the shell; the welding assembly 300 includes two welding modules that are respectively arranged at both ends of the base 100 and have adjustable spacing, the welding module includes a gear ring 301 that is arranged on the outside of the bearing frame 201 and rotates around its own axis, and two symmetrically arranged welding guns 302 that move along their radius are installed on the side of the gear ring 301 for welding the shell.

[0021] Specifically, vertical plates 204 are provided at both ends of the support frame 201 in the length direction, grooves 205 are provided on the sides of the vertical plates 204, and vertical rods 206 are provided in the grooves 205. Both ends of the limiting plate 202 are located in the grooves 205 and are sleeved on the vertical rods 206. A first spring 207 is also sleeved on the vertical rods 206. Both ends of the first spring 207 respectively abut against the limiting plate 202 and the top of the groove 205, and are always in a compressed state. When the muffler housing is placed on the support frame 201, the limiting plate 202 is first lifted, and then the limiting plate 202 is dropped, so that the limiting plate 202 limits the upper part of the muffler housing, and under the action of the first spring 207, the limiting plate 202 applies a downward force to the muffler housing to ensure that the muffler housing maintains contact with the support frame 201.

[0022] Specifically, two symmetrically arranged through grooves 208 that penetrate up and down are provided on the top surface of the limit plate 202 along its length direction. The upper end of the limit rod 203 slides in the through groove 208, and two retaining rings 209 are provided on the upper end of the limit rod 203. The retaining rings 209 are respectively in contact with the upper and lower surfaces of the limit plate 202. When the limit plate 202 moves downward, the limit rod 203 will also move downward. In addition, two symmetrically arranged limit grooves 210 are also provided on the top surface of the carrier frame 201 along its length direction. The lower end of the limit rod 203 passes through the limit groove 210 and is penetrated in the moving block 211. The moving block 211 is respectively connected to the two moving ends of the bidirectional linear mechanism. The bidirectional linear mechanism is installed on the carrier frame 201. The bidirectional linear mechanism can be driven by a bidirectional screw rod structure. The two limit rods 203 are moved toward each other through the bidirectional linear mechanism, thereby limiting the two sides of the muffler shell, thereby realizing the limitation of the surrounding side of the muffler shell.

[0023] Specifically, the base 100 is provided with a slide groove 101 along its length direction, and a guide rod 102 is provided in the slide groove 101 along its length direction, and a supporting frame 201 is slidably fitted in the slide groove 101 and sleeved on the guide rod 102, and the supporting frame 201 is locked with screws to prevent the supporting frame 201 from shifting.

[0024] Specifically, the gear ring 301 is meshed with the gear 304, the gear 304 is sleeved on the transmission shaft 305, the transmission shaft 305 is rotatably mounted on the support plate 103, and is connected to the output end of the motor 306, the motor 306 is mounted on the support plate 103, the transmission shaft 305 is driven to rotate by the motor 306, and the transmission shaft 305 drives the gear 304 to rotate, so that the gear ring 301 rotates, and the welding gun 302 can also make a circular motion, so that the shell can be welded uninterruptedly, the support plate 103 is mounted on the base 100, the gear ring 301 is rotatably mounted on the support ring 303, and the inner wall of the support ring 303 is provided with a bracket 307, one of which is mounted on the base 100, and the other bracket 307 is mounted on the support ring 303. One of the carrier frames 201 is provided with a side frame 308, one of the gears 304 is rotatably mounted on the side frame 308, so that the gear 304 can move with the ring gear 301, and the transmission shaft 305 passes through the side frame 308, and the circumferential side of the transmission shaft 305 is provided with a plurality of spaced key grooves 309 along its axial direction, and the inner wall of one of the gears 304 is provided with a plurality of key pins 310 along the circumferential direction, and the key pins 310 are slidably fitted in the key grooves 309, so as to ensure that after one of the gears 304 moves, it can also rotate with the transmission shaft 305, and due to the limitation of the guide rod 102 and other components, the welding gun 302 cannot rotate 360 ​​degrees, so after the welding is completed, the part of the shell that has not been welded can be repaired.

[0025] Specifically, the side wall of the gear ring 301 is provided with two symmetrically arranged convex plates 311, the welding gun 302 is inserted into the convex plate 311, and the upper end of the welding gun 302 is also installed on the connecting plate 312, and a connecting rod 313 is provided on the connecting plate 312, and the connecting rod 313 is inserted into the convex plate 311, and a retaining ring 314 is provided at the lower end, and a second spring 315 is also sleeved on the connecting rod 313, and the two ends of the second spring 315 are respectively abutted against the convex plate 311 and the retaining ring 314, and are always in a compressed state, and a detachable connecting rod 313 is also provided at the lower end The connecting block 316 has a ball 317 rotating around its own spherical center at its end. When welding, the ball 317 abuts against the muffler shell. As the gear ring 301 rotates, the ball 317 also moves along the trajectory of the muffler shell. At the same time, according to the change of the trajectory of the muffler shell, the welding gun 302 will also change synchronously to adapt to muffler shells of different shapes and complete the welding operation. The second spring 315 can also ensure that the ball 317 is always in contact with the muffler shell to avoid welding leaks.

[0026] Specifically, recesses 104 are provided at one end and both sides in the length direction of the base 100 for passing the gear ring 301 .

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An engine muffler shell welding device, characterized in that: include: base(100); The bearing assembly (200) comprises two bearing frames (201) installed at two ends of the base (100) and having an adjustable spacing therebetween, the bearing frames (201) being provided with a limit plate (202) movable in a vertical direction, and two limit rods (203) movable towards each other are provided at two ends of the limit plate (202) for limiting the position of the housing; The welding assembly (300) comprises two welding modules respectively arranged at two ends of the base (100) and having an adjustable spacing, the welding module comprising a gear ring (301) arranged outside the support frame (201) and rotating around its own axis, and two symmetrically arranged welding guns (302) movable along their radius are mounted on the side of the gear ring (301) for welding the shell.

2. The engine muffler shell welding device according to claim 1, characterized in that: Vertical plates (204) are provided at both ends of the bearing frame (201) in the length direction, a groove (205) is provided on the side of the vertical plate (204), a vertical rod (206) is provided in the groove (205), both ends of the limit plate (202) are located in the groove (205) and are sleeved on the vertical rod (206), a first spring (207) is also sleeved on the vertical rod (206), and both ends of the first spring (207) are respectively abutted against the limit plate (202) and the top of the groove (205), and are always in a compressed state.

3. The engine muffler shell welding device according to claim 1, characterized in that: The top surface of the limit plate (202) is provided with two symmetrically arranged through grooves (208) extending vertically along its length direction; the upper end of the limit rod (203) is slidably fitted in the through groove (208); and the upper end of the limit rod (203) is provided with two retaining rings (209); the retaining rings (209) are respectively in contact with the upper and lower surfaces of the limit plate (202); the top surface of the support frame (201) is also provided with two symmetrically arranged limit grooves (210) along its length direction; the lower end of the limit rod (203) passes through the limit grooves (210) and is inserted into a moving block (211); the moving block (211) is respectively connected to the two moving ends of a bidirectional linear mechanism; and the bidirectional linear mechanism is mounted on the support frame (201).

4. The engine muffler shell welding device according to claim 1, characterized in that: The base (100) is provided with a slide groove (101) along its length direction, and a guide rod (102) is provided in the slide groove (101) along its length direction, wherein one of the support frames (201) is slidably fitted in the slide groove (101) and sleeved on the guide rod (102), and the support frame (201) is locked with screws.

5. The engine muffler shell welding device according to claim 1, characterized in that: The gear ring (301) is meshed with the gear (304), the gear (304) is sleeved on the transmission shaft (305), the transmission shaft (305) is rotatably mounted on the support plate (103) and connected to the output end of the motor (306), the motor (306) is mounted on the support plate (103), the support plate (103) is mounted on the base (100), the gear ring (301) is rotatably mounted on the support ring (303), the inner wall of the support ring (303) is provided with a bracket (307), one of the brackets (307) is mounted on the base (100), wherein another bracket (307) is mounted on one of the carrier frames (201) and is provided with a side frame (308), wherein one of the gears (304) is rotatably mounted on the side frame (308), and the transmission shaft (305) passes through the side frame (308), and a plurality of spaced keyways (309) are provided on the circumferential side of the transmission shaft (305) along its axial direction, wherein a plurality of key pins (310) are provided on the inner wall of one of the gears (304) along the circumferential direction, and the key pins (310) are slidably fitted in the keyways (309).

6. The engine muffler shell welding device according to claim 1, characterized in that: The side wall of the gear ring (301) is provided with two symmetrically arranged protruding plates (311), the welding gun (302) is inserted into the protruding plates (311), the upper end of the welding gun (302) is also mounted on a connecting plate (312), a connecting rod (313) is provided on the connecting plate (312), the connecting rod (313) is inserted into the protruding plates (311), and a retaining ring (314) is provided at the lower end, a second spring (315) is also sleeved on the connecting rod (313), two ends of the second spring (315) respectively abut against the protruding plates (311) and the retaining ring (314), and are always in a compressed state, a detachably connected connecting block (316) is also provided at the lower end of the connecting rod (313), and a ball (317) that rotates around its own ball center is provided at the end of the connecting block (316) for contacting the outer shell.

7. The engine muffler shell welding device according to claim 1, characterized in that: One end of the base (100) and both sides in the length direction are provided with recesses (104) for passing the gear ring (301).

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