Bent pipe assembly welding forming clamping mechanism for automobile mixer
By designing the welding forming clamping mechanism of the bent pipe assembly, the fixation problem between the bent pipe flange and the injection straight pipe is solved by using the cooperation of the cylinder and the rubber block, the fixation problem between the bent pipe flange and the injection straight pipe is achieved, and the tight splicing and smooth connection is achieved, the welding quality is improved and urea crystallization is prevented.
Patent Information
- Application Number
- CN202422359685.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-27
AI Technical Summary
During the production process of automobile mixers, the connection between the bent pipe flange and the injection straight pipe is difficult to fix, resulting in uneven welding and loosening, affecting the welding quality and possibly producing urea crystallization.
A welded forming and clamping mechanism for a bent pipe assembly for automobile mixer is designed, including a mounting base, a first positioning mechanism, a second positioning mechanism and a compression mechanism. Through the cooperation of the cylinder and the rubber block, the bent pipe flange is ensured to be accurately spliced and fixed with the injection straight pipe.
The tight and accurate splicing of the bent pipe flange and the jet straight pipe is achieved, which improves the welding quality, avoids position shift during welding, ensures smooth internal connections, and prevents the generation of urea crystals.
Smart Images
Figure CN223185929U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mixer welding, in particular to a welding and forming clamping mechanism for a bent pipe assembly used in an automobile mixer. Background Art
[0002] Automobile exhaust contains a large amount of harmful substances, including carbon monoxide, nitrogen oxides, hydrocarbons and solid suspended particles. While exhaust directly harms human health, it also has a profound impact on the environment in which humans live. When a car is equipped with DOC+DPF+mixer+SCR to purify exhaust, the role of the mixer is to break up the urea so that the exhaust gas and urea are fully mixed and then enter the SCR, thereby improving the SCR conversion efficiency.
[0003] In the process of producing mixers, an elbow flange needs to be welded at one end of the injection straight pipe. During the splicing process, the elbow flange is difficult to fix due to its curved surface, and its position is prone to change, causing the connection between the elbow flange and the injection straight pipe to become loose. This causes differences in size, angle, and other aspects of the weld, and the weld is uneven, which leads to the easy generation of urea crystals during use.
[0004] Therefore, it is necessary to provide a new automobile mixer elbow assembly welding forming clamping mechanism to solve the above technical problems. Utility Model Content
[0005] The technical problem solved by the utility model is to provide a welding forming clamping mechanism for an automobile mixer elbow assembly, which is convenient for accurately splicing an elbow flange and a jet straight pipe and ensures smoothness inside the welding part.
[0006] In order to solve the above technical problems, the utility model provides a welding and forming clamping mechanism for an automobile mixer elbow assembly, which includes: a mounting seat, one end of which is used to fix a first positioning mechanism of the elbow flange, and the other end of the mounting seat is provided with a second positioning mechanism for compressing the injection straight pipe, and the side wall of the mounting seat is installed with a compression mechanism for downwardly compressing the injection straight pipe; a support plate for supporting the injection straight pipe is installed in the center of the surface of the mounting seat, and a limiting mechanism for limiting the injection straight pipe is installed on the surface of the mounting seat, the limiting mechanism includes a support seat, the support seat is installed on the surface of the mounting seat, and a second cylinder is obliquely installed on the side wall of the support seat; one end of the second cylinder is connected to the mounting plate, the top end of the mounting plate is fixedly connected to a pin with an arc-shaped side wall, and the pin engages with a fixing hole on the surface of the injection straight pipe.
[0007] Preferably, the first positioning mechanism includes a first cylinder and a connecting rod, the first cylinder and the connecting rod are installed at one end of the mounting seat, the top end of the connecting rod is fixedly connected to the base, the surface of the base is installed with a first rubber block, and the first rubber block and the inside of the base are engaged with the elbow flange.
[0008] Preferably, the side wall of the connecting rod is fixedly connected to the connecting plate, the side wall of the connecting plate is rotatably connected to the claw, and the claw engages the bottom end of the elbow flange; the bottom end of the claw is slidably connected to the compression plate, and the bottom surface of the compression plate is connected to the first cylinder.
[0009] Preferably, the second positioning mechanism includes a slide seat, the other end of the mounting seat is slidably connected to the slide seat, the side wall of the mounting seat is installed with a third cylinder, and one end of the third cylinder is connected to the slide seat; the top end of the slide seat is fixedly connected to a second rubber block, and the second rubber block engages the inner wall of the injection straight pipe.
[0010] Preferably, one end of the second rubber block is in a hemispherical structure, and the first rubber block is in a truncated cone structure.
[0011] Preferably, the compression mechanism includes a connecting frame, the connecting frame is installed on the side wall of the mounting seat, and the fourth cylinder is installed on the side wall of the connecting frame; the top end of the connecting frame is rotatably connected to the extrusion plate, and the extrusion plate contacts the surface of the injection straight pipe; the top end of the fourth cylinder is connected to the splint, and the side wall of the extrusion plate is provided with a slide groove, and the splint is engaged and slidably connected to the slide groove.
[0012] Preferably, the clamping plate is aligned with the support plate, and the support plate is located between the support seat and the slide seat.
[0013] Compared with the related art, the welding and forming clamping mechanism for the elbow assembly for automobile mixer provided by the present invention has the following beneficial effects:
[0014] The utility model provides a welding and forming clamping mechanism for an automobile mixer elbow assembly. Before welding, the elbow flange is first placed into the interior of the first positioning mechanism, and then the injection straight pipe is placed into the interior of the support plate and spliced with the elbow flange. The second positioning mechanism is opened, and the second positioning mechanism squeezes the injection straight pipe toward the elbow flange, so that the injection straight pipe and the elbow flange are squeezed against each other, increasing the squeezing force between the two. The injection straight pipe is rotated so that the fixing hole on the side wall of the injection straight pipe is aligned with the pin. At this time, the operation of the second cylinder drives the mounting plate and the pin to move obliquely upward and enter the fixing hole. The pin obliquely engages with the fixing hole, increasing the stability between the pin and the injection straight pipe, thereby fixing the position of the injection straight pipe, making the injection straight pipe and the elbow flange tightly and accurately spliced together, avoiding displacement between the injection straight pipe and the elbow flange during welding, improving welding quality, and making the internal connection between the injection straight pipe and the elbow flange smooth, avoiding the generation of urea crystals during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural schematic diagram of a preferred embodiment of a welding and forming clamping mechanism for an automobile mixer elbow assembly provided by the utility model;
[0016] Figure 2 for Figure 1 An enlarged view of the structure at point A is shown;
[0017] Figure 3 A front view of the overall structure provided by the utility model;
[0018] Figure 4 for Figure 1 A front view of the base structure is shown;
[0019] Figure 5 for Figure 1 The side view of the injection straight pipe structure is shown;
[0020] Figure 6 for Figure 4 Schematic diagram of the claw structure shown;
[0021] Figure 7 This is a schematic diagram of the exploded structure of the injection straight pipe and elbow flange provided by the utility model.
[0022] Numbers in the figure: 1. Mounting seat, 2. First positioning mechanism, 21. First cylinder, 22. Connecting rod, 23. Connecting plate, 24. Claw, 25. Base, 26. First rubber block, 27. Compression plate, 3. Support plate, 4. Limiting mechanism, 41. Support seat, 42. Second cylinder, 43. Mounting plate, 44. Pin, 5. Second positioning mechanism, 51. Slide seat, 52. Third cylinder, 53. Second rubber block, 6. Jet straight pipe, 61. Fixing hole, 7. Bend flange, 8. Compression mechanism, 81. Extrusion plate, 82. Clamp, 83. Slide groove, 84. Fourth cylinder, 85. Connecting frame. DETAILED DESCRIPTION
[0023] The present invention will be further described below with reference to the accompanying drawings and implementation examples.
[0024] See also Figures 1 to 7 , Figure 1 This is a structural schematic diagram of a preferred embodiment of a welding and forming clamping mechanism for an automobile mixer elbow assembly provided by the utility model; Figure 2 for Figure 1 An enlarged view of the structure at point A is shown; Figure 3 A front view of the overall structure provided by the utility model; Figure 4 for Figure 1 A front view of the base structure is shown; Figure 5 for Figure 1 The side view of the injection straight pipe structure is shown; Figure 6 for Figure 4 Schematic diagram of the claw structure shown; Figure 7 This is a schematic diagram of the exploded structure of the injection straight pipe and elbow flange provided by the present invention. The welding and forming clamping mechanism of the elbow assembly for an automobile mixer includes: a mounting base 1, one end of which is used to fix a first positioning mechanism 2 for the elbow flange 7. The first positioning mechanism 2 includes a first cylinder 21 and a connecting rod 22. The first cylinder 21 and the connecting rod 22 are mounted on one end of the mounting base 1. The top end of the connecting rod 22 is fixedly connected to a base 25. A first rubber block 26 is mounted on the surface of the base 25. The first rubber block 26 and the interior of the base 25 engage the elbow flange 7. To facilitate the placement of the elbow flange 7 on the surface of the base 25, the first rubber block 26 on the surface of the base 25 engages with the elbow flange 7, preliminarily fixing the elbow flange 7 to the surface of the base 25.
[0025] The side wall of the connecting rod 22 is fixedly connected to the connecting plate 23, and the side wall of the connecting plate 23 is rotatably connected to the claw 24, and the claw 24 engages the bottom end of the elbow flange 7; the bottom end of the claw 24 is slidably connected to the compression plate 27, and the bottom surface of the compression plate 27 is connected to the first cylinder 21. In order to facilitate the operation of the first cylinder 21, the compression plate 27 is driven to move downward, and the compression plate 27 squeezes the bottom end of the claw 24 downward. The claw 24 rotates on the side wall of the connecting plate 23, and the top end of the claw 24 rotates downward to squeeze the bottom end of the elbow flange 7, thereby fixing the elbow flange 7 on the surface of the base 25.
[0026] The other end of the mounting seat 1 is provided with a second positioning mechanism 5 for compressing the injection straight pipe 6, and the second positioning mechanism 5 includes a slide 51. The other end of the mounting seat 1 is slidably connected to the slide 51, and a third cylinder 52 is installed on the side wall of the mounting seat 1, and one end of the third cylinder 52 is connected to the slide 51; the top end of the slide 51 is fixedly connected to a second rubber block 53, and the second rubber block 53 engages with the inner side wall of the injection straight pipe 6. In order to facilitate the third cylinder 52 to push the slide 51 to move, the second rubber block 53 moves into the interior of the injection straight pipe 6, squeezes the injection straight pipe 6, and makes the injection straight pipe 6 tightly squeeze the elbow flange 7.
[0027] One end of the second rubber block 53 is in a hemispherical structure. To facilitate the second rubber block 53 to enter the interior of the injection straight pipe 6, the first rubber block 26 is in a truncated cone structure. To facilitate the first rubber block 26 to fix the elbow flange 7.
[0028] A support plate 3 for supporting the jet straight pipe 6 is installed at the center of the surface of the mounting seat 1, and a limiting mechanism 4 for limiting the jet straight pipe 6 is installed on the surface of the mounting seat 1, and the limiting mechanism 4 includes a support seat 41, and the support seat 41 is installed on the surface of the mounting seat 1, and a second cylinder 42 is installed obliquely on the side wall of the support seat 41; one end of the second cylinder 42 is connected to a mounting plate 43, and the top end of the mounting plate 43 is fixedly connected to a pin 44 with an arc-shaped side wall, and the pin 44 engages with the fixing hole 61 on the surface of the jet straight pipe 6; when the jet After the jet straight tube 6 is compressed, the fixing hole 61 on the side wall of the jet straight tube 6 is aligned with the pin 44. At this time, the operation of the second cylinder 42 drives the mounting plate 43 and the pin 44 to move obliquely upward into the fixing hole 61. The pin 44 obliquely engages the fixing hole 61, increasing the stability between the pin 44 and the jet straight tube 6, thereby fixing the position of the jet straight tube 6, making the jet straight tube 6 and the elbow flange 7 tightly and accurately spliced together, avoiding displacement between the jet straight tube 6 and the elbow flange 7 during welding.
[0029] The side wall of the mounting seat 1 is installed with a compression mechanism 8 for downwardly compressing the injection straight pipe 6; the compression mechanism 8 includes a connecting frame 85, the side wall of the mounting seat 1 is installed with the connecting frame 85, and the side wall of the connecting frame 85 is installed with a fourth cylinder 84; the top end of the connecting frame 85 is rotatably connected to the extrusion plate 81, and the extrusion plate 81 contacts the surface of the injection straight pipe 6; the top end of the fourth cylinder 84 is connected to the splint 82, and the side wall of the extrusion plate 81 is provided with a slide groove 83, and the splint 82 is engaged and slidably connected to the slide groove 83. In order to facilitate opening the fourth cylinder 84, the fourth cylinder 84 drives the splint 82 to move upward, and the splint 82 moves inside the slide groove 83, pushing the extrusion plate 81 to rotate at the top end of the connecting frame 85, so that one end of the extrusion plate 81 rotates downward to extrude the injection straight pipe 6, thereby increasing the stability of the injection straight pipe 6 during welding.
[0030] The clamping plate 82 is aligned with the support plate 3, and the support plate 3 is located between the support seat 41 and the slide seat 51, in order to facilitate the support plate 3 to provide support for the injection straight pipe 6 and facilitate the splicing between the injection straight pipe 6 and the elbow flange 7.
[0031] The working principle of the welding and forming clamping mechanism for the automobile mixer elbow assembly provided by the present invention is as follows: the elbow flange 7 is placed on the surface of the base 25, and the first rubber block 26 on the surface of the base 25 engages with the elbow flange 7, preliminarily fixing the elbow flange 7 to the surface of the base 25. The injection straight pipe 6 is placed on the surface of the support plate 3 and slid to preliminarily connect it to the elbow flange 7. The cylinder is connected to the air pump, and the third cylinder 52 is turned on. The third cylinder 52 pushes the slide 51 to move, so that the second rubber block 53 moves into the interior of the injection straight pipe 6, squeezes the injection straight pipe 6, and makes the injection straight pipe 6 tightly press the elbow flange 7. In the process of the injection straight pipe 6 and the elbow flange 7 being tightly pressed together, the elastic second rubber block 53 and the first rubber block 26 are slightly deformed. By manipulating the movement spacing of the slide 51 by the third cylinder 52, the extrusion degree of the rubber block is changed. According to the elasticity of the rubber block, the injection straight pipe 6 and the elbow flange 7 are slightly shaken left and right. At the same time, the injection straight pipe 6 is rotated to facilitate the alignment of the fixing hole 61 with the pin 44. At this time, the second cylinder 42 and the first cylinder 2 are turned on. 1. The operation of the second cylinder 42 drives the mounting plate 43 and the pin 44 to move obliquely upward into the fixing hole 61. The pin 44 obliquely engages the fixing hole 61 to increase the stability between the pin 44 and the injection straight pipe 6, thereby fixing the position of the injection straight pipe 6. The operation of the first cylinder 21 drives the compression plate 27 to move downward. The compression plate 27 presses the bottom end of the claw 24 downward. The claw 24 rotates on the side wall of the connecting plate 23. The top end of the claw 24 rotates downward to press the bottom end of the elbow flange 7, fixing the elbow flange 7 on the surface of the base 25, so that the injection straight pipe 6 and the elbow flange 7 are tightly and accurately spliced together to avoid displacement between the injection straight pipe 6 and the elbow flange 7 during welding. Open the fourth cylinder 84, and the fourth cylinder 84 drives the clamping plate 82 to move upward. The clamping plate 82 moves inside the slide groove 83, pushing the extrusion plate 81 to rotate at the top end of the connecting frame 85, so that one end of the extrusion plate 81 rotates downward to squeeze the injection straight pipe 6, thereby increasing the stability of the injection straight pipe 6 during welding. The injection straight pipe 6 and the elbow flange 7 are multiplexed to ensure that the parts do not move or deform during assembly and welding, thereby improving the welding quality, thereby making the internal connection between the injection straight pipe 6 and the elbow flange 7 smooth, and avoiding the formation of urea crystals during use.
[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A welding and forming clamping mechanism for an automobile mixer elbow assembly, characterized in that: include: A mounting seat (1), one end of the mounting seat (1) being used to fix a first positioning mechanism (2) of a bent pipe flange (7), the other end of the mounting seat (1) being provided with a second positioning mechanism (5) for compressing a straight injection pipe (6), and a compression mechanism (8) for downwardly compressing the straight injection pipe (6) being installed on a side wall of the mounting seat (1); A support plate (3) for supporting the jet straight pipe (6) is installed at the center of the surface of the mounting seat (1), and a limiting mechanism (4) for limiting the jet straight pipe (6) is installed on the surface of the mounting seat (1). The limiting mechanism (4) includes a support seat (41). The support seat (41) is installed on the surface of the mounting seat (1), and a second cylinder (42) is installed obliquely on the side wall of the support seat (41); one end of the second cylinder (42) is connected to a mounting plate (43), and the top end of the mounting plate (43) is fixedly connected to a pin (44) with an arc-shaped side wall, and the pin (44) is engaged with a fixing hole (61) on the surface of the jet straight pipe (6).
2. The welding and forming clamping mechanism for the elbow assembly for an automobile mixer according to claim 1, characterized in that: The first positioning mechanism (2) comprises a first cylinder (21) and a connecting rod (22); the first cylinder (21) and the connecting rod (22) are mounted on one end of the mounting seat (1); the top end of the connecting rod (22) is fixedly connected to a base (25); a first rubber block (26) is mounted on the surface of the base (25); the first rubber block (26) and the interior of the base (25) engage with the elbow flange (7).
3. The welding and forming clamping mechanism for the elbow assembly for an automobile mixer according to claim 2, characterized in that: The side wall of the connecting rod (22) is fixedly connected to the connecting plate (23), and the side wall of the connecting plate (23) is rotatably connected to a clamping claw (24), and the clamping claw (24) is engaged with the bottom end of the elbow flange (7); the bottom end of the clamping claw (24) is slidably connected to a compression plate (27), and the bottom surface of the compression plate (27) is connected to the first cylinder (21).
4. The welding and forming clamping mechanism for an automobile mixer elbow assembly according to claim 3, characterized in that: The second positioning mechanism (5) includes a slide seat (51), the other end of the mounting seat (1) is slidably connected to the slide seat (51), a third cylinder (52) is installed on the side wall of the mounting seat (1), and one end of the third cylinder (52) is connected to the slide seat (51); the top end of the slide seat (51) is fixedly connected to a second rubber block (53), and the second rubber block (53) is engaged with the inner wall of the injection straight pipe (6).
5. The welding and forming clamping mechanism for the elbow assembly for an automobile mixer according to claim 4, characterized in that: One end of the second rubber block (53) is in a hemispherical structure, and the first rubber block (26) is in a truncated cone structure.
6. The welding and forming clamping mechanism for an automobile mixer elbow assembly according to claim 4, characterized in that: The compression mechanism (8) includes a connecting frame (85), the connecting frame (85) is installed on the side wall of the mounting seat (1), and the side wall of the connecting frame (85) is installed on the fourth cylinder (84); the top end of the connecting frame (85) is rotatably connected to the extrusion plate (81), and the extrusion plate (81) contacts the surface of the injection straight pipe (6); the top end of the fourth cylinder (84) is connected to the clamping plate (82), and the side wall of the extrusion plate (81) is provided with a sliding groove (83), and the clamping plate (82) is engaged with and slidably connected to the sliding groove (83).
7. The welding and forming clamping mechanism for the elbow assembly for an automobile mixer according to claim 6, characterized in that: The clamping plate (82) is aligned with the support plate (3), and the support plate (3) is located between the support seat (41) and the slide seat (51).