Positioning clamp for exhaust pipe shell plate welding
By introducing a lifting base, hollow disc and angle change mechanism into the positioning fixture for welding of exhaust pipe shell panels, combined with electric cylinder, vacuum pump and rubber anti-slip pad, the problem of welding inconvenience is solved, and four convenient and stable sides are achieved Fillet welding operation.
Patent Information
- Application Number
- CN202420898471.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-26
AI Technical Summary
During the welding of the car exhaust pipe shell plate, the staff need to circle around the plate to complete the welding of four corners, which leads to inconvenient operation.
A positioning fixture for welding of exhaust pipe shell sheets including lifting base, hollow disc, positioning mechanism and angle change mechanism is designed. The hollow disc is rotated by a motor 90 degrees, and the staff can weld four without moving the position. The edges and corners are used to improve the positioning and stability of the board.
The staff can complete the welding of four corners without turning around the board, which improves the convenience of welding and the stability of the board, and enhances the welding effect.
Smart Images
Figure CN222176514U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile exhaust pipe processing, in particular to a positioning fixture for exhaust pipe shell plate welding. Background Art
[0002] As the core component of automobile products for exhaust emissions, the automobile exhaust pipe is mainly processed by laminating two or more stainless steel sheets of the same shape used for the shell, welding the four corners of the laminated layer, and then forming the welded sheet through the next processing step to obtain the exhaust pipe shell.
[0003] Publication No.: CN214721795U discloses a positioning fixture for exhaust pipe shell plate welding, including a positioning block fixedly installed with a nut and a sliding block fixedly installed with the positioning block, the sliding block slidingly cooperates with a slide rail fixedly installed on a mounting frame, wherein the positioning block includes a limiting boss located at the bottom and a limiting groove located at the top, the limiting boss extends outward and cooperates with a central support platform for placing laminated plates, the limiting groove cooperates with the edge of the laminated plates and is used for an external welding machine to weld the four corners of the edge of the laminated plates; the utility model can center and limit its movement stroke, and can also accurately fit and position the outer edge of the laminated plates, which is beneficial to the welding effect of the four peripheral corners of the outer edge of the laminated plates.
[0004] The applicant found that there are some deficiencies in use: when two plates are stacked together and positioned, their four corners are welded. When the staff holds the welding machine for welding, they need to circle around the plates to complete the four welds, which is not convenient enough.
[0005] Therefore, the utility model designs a positioning fixture for welding an exhaust pipe shell plate to solve the problems existing in the prior art. Utility Model Content
[0006] The utility model aims to provide a positioning fixture for welding an exhaust pipe shell plate material, so as to solve the problems raised in the above-mentioned background technology.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning fixture for welding exhaust pipe shell plate materials, comprising: a lifting base, a hollow disk is provided directly above the lifting base, a positioning mechanism is provided on the hollow disk, an angle changing mechanism for adjusting the angle of the hollow disk is provided on the lifting base, the angle changing mechanism comprises a motor frame, the motor frame is installed in the middle of the top of the lifting base, a rotating shaft is rotatably installed on the top of the motor frame, the top of the rotating shaft is connected to the bottom center of the hollow disk, the bottom of the rotating shaft is connected to the output end of the driving motor, the driving motor drives the rotating shaft to rotate 90 degrees, so that the hollow disk rotates 90 degrees, and then drives the plate to rotate 90 degrees. The staff can weld the four corners of the plate without moving their position, which is more convenient.
[0008] Preferably, the positioning mechanism includes four L-shaped frames, which are respectively installed on the outer walls of the hollow disk. An electric cylinder is installed on the side wall of the L-shaped frame. The output end of the electric cylinder is connected to a U-shaped positioning plate. The electric cylinder drives the U-shaped positioning plate to extend, so that the four U-shaped positioning plates position the four sides of the two plates to avoid the two plates from offsetting during the welding process and affecting the welding effect.
[0009] Preferably, an electric push rod is installed on the top of the U-shaped positioning plate, and the output end of the electric push rod is connected to a pressure plate. The electric push rod drives the pressure plate to press down to press the plate, thereby further improving the positioning effect.
[0010] Preferably, a vacuum pump connected to the hollow disk is provided on the top of the lifting base, and a plurality of circular holes are provided on the top of the hollow disk. The vacuum pump is started to generate negative pressure in the circular holes, so that the bottom of the plate is adsorbed on the hollow disk, thereby further improving the positioning effect.
[0011] Preferably, rollers are provided around the bottom of the hollow disk and are rollingly connected to the top of the lifting base.
[0012] Preferably, the bottom of the pressing plate and the side walls of the U-shaped positioning plate are both provided with rubber anti-skid pads, which can increase the friction between the pressing plate, the U-shaped positioning plate and the plate, thereby improving the positioning effect.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] 1. The utility model is provided with an angle-changing mechanism. When the worker has finished welding one corner, the driving motor drives the rotating shaft to rotate 90 degrees to rotate the hollow disk 90 degrees, and the plate is rotated 90 degrees. The worker can weld the second corner while standing in place, and then continue to rotate 90 degrees until four corners are welded. The worker does not need to circle around the plate, and welding is more convenient.
[0015] 2. The utility model uses the positioning mechanism to position the two plates with four U-shaped positioning plates. At the same time, the electric push rod drives the pressure plate to press the top of the plate. At the same time, the vacuum pump causes the circular hole to generate negative pressure to adsorb the bottom of the plate, further improving the positioning effect of the two plates and improving the stability of the plates during welding. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a main schematic diagram of the utility model;
[0017] Figure 2 It is a bottom view schematic diagram of the utility model;
[0018] Figure 3 For the utility model Figure 1 Enlarged schematic diagram of the structure at point a.
[0019] In the figure: 1. lifting base; 2. hollow plate; 3. positioning mechanism; 4. angle changing mechanism; 301. L-shaped frame; 302. electric cylinder; 303. U-shaped positioning plate; 304. electric push rod; 305. pressure plate; 306. vacuum pump; 307. round hole; 401. motor frame; 402. rotating shaft; 403. driving motor; 404. roller. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 The utility model provides an embodiment: a positioning fixture for welding an exhaust pipe shell plate, comprising: a lifting base 1, a hollow disk 2 is provided directly above the lifting base 1, a positioning mechanism 3 is provided on the hollow disk 2, and an angle changing mechanism 4 for adjusting the angle of the hollow disk 2 is provided on the lifting base 1. The angle changing mechanism 4 comprises a motor frame 401, and the motor frame 401 is installed in the middle of the top of the lifting base 1. A rotating shaft 402 is rotatably installed on the top of the motor frame 401, and the top of the rotating shaft 402 is connected to the bottom center of the hollow disk 2, and the bottom of the rotating shaft 402 is connected to the output end of the driving motor 403.
[0022] See also Figure 1In this embodiment: the lifting base 1 includes a mounting seat and a bearing seat, and circular holes are opened around the top of the mounting seat. A lifting electric cylinder is installed in the circular hole, and the output end of the lifting electric cylinder is connected to the bottom of the bearing seat. The lifting electric cylinder can adjust the height of the bearing seat by lifting and lowering, and then adjust the height of the hollow disk 2. The motor frame 401 and the vacuum pump 306 are installed on the bearing seat, and the roller 404 is rollingly connected to the bearing seat.
[0023] See also Figure 1 In this embodiment: the positioning mechanism 3 includes four L-shaped frames 301, and the four L-shaped frames 301 are respectively installed on the outer walls of the hollow disk 2. An electric cylinder 302 is installed on the side wall of the L-shaped frame 301, and the output end of the electric cylinder 302 is connected to a U-shaped positioning plate 303.
[0024] See also Figure 3 In this embodiment, an electric push rod 304 is installed on the top of the U-shaped positioning plate 303, and a pressure plate 305 is connected to the output end of the electric push rod 304.
[0025] See also Figure 1 In this embodiment: a vacuum pump 306 connected to the hollow disk 2 is provided on the top of the lifting base 1, and a plurality of circular holes 307 are provided on the top of the hollow disk 2. The vacuum pump 306 and the hollow disk 2 are connected through a telescopic hose. The hollow disk 2 rotates back and forth clockwise and counterclockwise, that is, after welding two plates, it starts to reverse after replacing two new plates, and then rotates forward next time. This is to avoid the entanglement of the telescopic hose.
[0026] See also Figure 1 In this embodiment: rollers 404 are provided around the bottom of the hollow disk 2 and are rollingly connected to the top of the lifting base 1.
[0027] See also Figure 3 In this embodiment, the bottom of the pressing plate 305 and the side wall of the U-shaped positioning plate 303 are both provided with rubber anti-slip pads.
[0028] Working principle: after stacking two plates together and placing them on the top of the hollow disk 2, the electric cylinder 302 drives the U-shaped positioning plate 303 to extend, so that the four sides of the plate enter the U-shaped positioning plate 303 to position the plate, and at the same time the electric push rod 304 drives the pressing plate 305 to descend, presses the plate tightly, and further improves the positioning effect, and finally starts the vacuum pump 306, so that the circular hole 307 generates negative pressure to adsorb the plate, and further improves the positioning effect of the plate, improves the stability during welding, and then the staff stands at a corner of the plate and holds the welding machine to weld one corner of the two plates. After welding, the driving motor 403 drives the rotating shaft 402 to rotate 90 degrees, and the plate changes sides. The staff can continue welding by standing away, without circling around the plate, which is more convenient. In addition, before welding, the height of the hollow disk 2 can be adjusted by the lifting base 1, and then the height of the plate can be adjusted, which is convenient for staff of different heights to perform welding. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.
[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A positioning fixture for welding an exhaust pipe shell plate, comprising: A lifting base (1), characterized in that: a hollow disk (2) is provided directly above the lifting base (1), a positioning mechanism (3) is provided on the hollow disk (2), an angle changing mechanism (4) for adjusting the angle of the hollow disk (2) is provided on the lifting base (1), and the angle changing mechanism (4) comprises a motor frame (401), the motor frame (401) is installed at the middle of the top of the lifting base (1), a rotating shaft (402) is rotatably installed on the top of the motor frame (401), the top of the rotating shaft (402) is connected to the bottom center of the hollow disk (2), and the bottom of the rotating shaft (402) is connected to the output end of the driving motor (403).
2. A positioning fixture for exhaust pipe housing plate welding according to claim 1, characterized in that: The positioning mechanism (3) comprises four L-shaped frames (301), the four L-shaped frames (301) being respectively mounted on the outer side walls of the hollow disk (2), an electric cylinder (302) being mounted on the side walls of the L-shaped frames (301), and an output end of the electric cylinder (302) being connected to a U-shaped positioning plate (303).
3. A positioning fixture for welding exhaust pipe housing plate material according to claim 2, characterized in that: An electric push rod (304) is installed on the top of the U-shaped positioning plate (303), and a pressure plate (305) is connected to the output end of the electric push rod (304).
4. A positioning fixture for exhaust pipe housing plate welding according to claim 2, characterized in that: A vacuum pump (306) connected to the hollow disk (2) is provided on the top of the lifting base (1), and a plurality of circular holes (307) are provided on the top of the hollow disk (2).
5. The positioning fixture for exhaust pipe housing plate welding according to claim 1, characterized in that: Rollers (404) are provided around the bottom of the hollow plate (2) and are rollingly connected to the top of the lifting base (1).
6. The positioning fixture for exhaust pipe housing plate welding according to claim 3, characterized in that: The bottom of the pressing plate (305) and the side wall of the U-shaped positioning plate (303) are both provided with rubber anti-skid pads.