A muffler pipe welding positioning device

Abstract

The utility model provides an exhaust pipe welding positioning device, including long strip base plate, the long strip base plate is along its length direction and is set up with the guide groove, a pair of movable seat is movably arranged on the guide groove, the upper end of movable seat is welded with the vertical board, and the inner wall of vertical board is equipped with positioning mechanism. The utility model discloses two interval adjustable placing columns, first, the interval adjustable convenient to the placement of the pipe to be welded, second, can support the inside of pipe after placing to ensure the roundness of pipe after welding, and the pipe is in the state of being propped up when welding, thereby facilitating the welding operation, and the setting of recess can avoid the welding of pipe and placing column together.

Description

Technical Field

[0001] This utility model relates to the field of muffler processing technology, and in particular to a muffler pipe welding positioning device. Background Technology

[0002] The circular tube silencer consists of an inner tube with micropores and an outer tube covering the inner tube. Both the inner and outer tubes are formed by bending and rolling, and then welded together. However, due to the inherent characteristics of the sheet metal, perfect alignment at the joint cannot be guaranteed during welding. The current method involves two operators working together to weld either the outer or inner tube. Specifically, one operator applies pressure to both sides of the tube to seal the joint, while the other operator first uses spot welding to shape it, and then fills the gap with full welding. This method suffers from low welding precision, primarily because it cannot guarantee the roundness of the tube, thus affecting the quality of the silencer. Utility Model Content

[0003] This utility model provides a welding positioning device for muffler pipe fittings, which solves the shortcomings of the prior art and addresses the problems of inconvenience in jointing and ensuring welding quality, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A welding positioning device for a muffler fitting includes a long base plate with a guide groove formed along its length. A pair of movable seats are movably mounted on the guide groove. A vertical plate is welded to the upper end of the movable seats, and a positioning mechanism is provided on the inner wall of the vertical plate.

[0005] Furthermore, the positioning mechanism includes a mounting plate that is installed on the inner wall of the upper end of the upright plate by screws. The inner end of the mounting plate is provided with an inner extension column, and the inner end of the inner extension column is provided with a placement column by screws. The placement column has a groove on its periphery.

[0006] Furthermore, the inner end of the placement column is connected by two pairs of limit screws via threads. Each pair of limit screws is movably equipped with a movable plate. The movable plates are symmetrically arranged and have a pair of guide holes. The guide holes are arranged horizontally, and the limit screws pass through the guide holes. The outer end of the movable plate is equipped with a wing plate via screws. The inner end of the wing plate is welded with an inner pressure arc plate, which is located on both sides of the outer periphery of the placement column.

[0007] Furthermore, an installation platform is mounted on the inner end of the column by screws, and an inner plate is welded to the outer end of the installation platform. A lead screw is rotatably mounted on the inner plate, and a pair of limit nuts are fixed to the upper end of the lead screw by threads. The limit nuts are located on the inner and outer sides of the inner plate. A movable seat is connected to the lead screw by threads, and an end cap is provided at the lower end of the lead screw. A concave plate is mounted on the inner end of the movable seat by screws. The inner plate and the inner extension column are located in the groove of the concave plate. The concave plate has symmetrically arranged vertically arranged waist-shaped holes. Guide screws are threaded to both ends of the installation platform and pass through the waist-shaped holes. The concave plate has symmetrically arranged oblique holes, and the upper end of the oblique holes extends inward at an incline. A movable rod is movably mounted in the oblique hole, and an inner block is provided on the inner end of the movable rod. The inner block is welded to the inner end of the movable plate.

[0008] Furthermore, an outer nut is threaded onto the outer end of the movable rod, and the outer nut is located on the outer side of the concave plate.

[0009] The advantages of the above technical solution are: This utility model uses two adjustable-spacing placement columns. Firstly, the adjustable spacing facilitates the placement of the pipe to be welded. Secondly, after placement, the columns can support the inside of the pipe during welding to ensure the roundness of the pipe after welding. Furthermore, the pipe is in a supported state during welding, which facilitates the welding operation. At the same time, the groove design can prevent the pipe and the placement column from being welded together.

[0010] This utility model uses two internal pressure arc plates that can move inward simultaneously and synchronously. First, it can fix the pipe fitting on the placement column. Second, when each pair of internal pressure arc plates closes and clamps the two ends of the pipe fitting, it can ensure that the joint of the pipe fitting is sealed. In addition, the synchronous inward movement and the arc structure design can ensure the roundness of the pipe fitting. Attached Figure Description

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a more detailed description of this utility model in conjunction with the accompanying drawings.

[0012] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0013] Figure 2 The three-dimensional structure of the positioning mechanism is shown. Figure 1 .

[0014] Figure 3 The three-dimensional structure of the positioning mechanism is shown. Figure 2 . Detailed Implementation

[0015] like Figures 1-3As shown, a muffler fitting welding positioning device includes a long base plate 1, on which a guide groove 10 is formed along its length. A pair of movable seats 2 are movably mounted on the guide groove 10, and a vertical plate 20 is welded to the upper end of the movable seats 2. A positioning mechanism is provided on the inner wall of the vertical plate 20.

[0016] The positioning mechanism includes a mounting plate 3 that is screwed to the inner wall of the upper end of the upright plate 20. An inner extension post 30 is provided on the inner end of the mounting plate 30, and a placement post 31 is screwed to the inner end of the inner extension post 30. A groove 32 is formed on the periphery of the placement post 31. Two pairs of limiting screws 48 are threaded to the inner end of the placement post 31. A movable plate 46 is movably mounted on each pair of limiting screws 48. The movable plates 46 are symmetrically arranged and have a pair of guide holes 47 arranged laterally. The limiting screws 48 pass through the guide holes 47. A wing plate 49 is screwed to the outer end of the movable plate 46. An inner pressure arc plate 50 is welded to the inner end of the wing plate 49, and the inner pressure arc plate 50 is located on both sides of the outer periphery of the placement post 31. An mounting platform 33 is screwed onto the inner end of the placement column 31. An inner plate 34 is welded to the outer end of the mounting platform 33. A lead screw 35 is rotatably mounted on the inner plate 34. A pair of limit nuts 36 are threaded onto the upper end of the lead screw 35. The limit nuts 36 are located on the inner and outer sides of the inner plate 34. A movable seat 37 is threaded onto the lead screw 35. An end cap 38 is provided at the lower end of the lead screw 35. A concave plate 40 is screwed onto the inner end of the movable seat 37. The inner plate 34 and the inner extension column 30 are located in the groove of the concave plate 40. The mounting plate 33 has symmetrically arranged vertically oriented oblong holes 41. The two ends of the mounting plate 33 are connected by threaded guide screws 39, which pass through the oblong holes 41. The concave plate 40 has symmetrically arranged oblique holes 42. The upper end of the oblique holes 42 extends inward at an incline. A movable rod 43 is movably arranged in the oblique holes 42. The inner end of the movable rod 43 is provided with an inner block 45, which is welded to the inner end of the movable plate 46. The outer end of the movable rod 43 is connected by threaded outer nut 44, which is located on the outer side of the concave plate 40.

[0017] During implementation, if the inner tube is being processed, micro-holes are punched first, and then the sheet metal is bent into a tubular structure by bending. If the outer tube is being processed, it is bent directly.

[0018] Then, one end of the processed pipe fitting is fitted onto one of the placement posts 31, and the two placement posts 31 are moved relative to each other, so that the other placement post 31 is inserted onto the other end of the pipe fitting. After that, a threaded fixing screw can be connected to the movable seat 2, and the lower end of the fixing screw is tightened to act on the long strip base plate 1 to lock the position of the placement post 31.

[0019] Next, the operator rotates the lead screw 35 through the end cap 38. When the lead screw 35 rotates, it will drive the concave plate 40 to move downward. The downward movement of the concave plate 40 will cause the inclined hole 42 on it to act on the outer periphery of the movable rod 43, thereby causing the movable plate 46 and the inner pressure arc plate 50 to move inward. This will cause the inner wall of the inner pressure arc plate 50 to abut against the outer periphery of the pipe fitting. During the abutment process, the joint of the pipe fitting will gradually close. Since both ends close simultaneously and the joint seam is narrow, it can ensure that the entire weld seam is joined together. After joining together, the weld seam of the pipe fitting is located in the groove 32. After that, the operator performs the welding operation. After the welding is completed, the clamping of the inner pressure arc plate 50 is removed, and the placement column 31 is pulled out from both ends of the pipe fitting.

[0020] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A welding positioning device for silencer pipe fittings, characterized in that, It includes a long strip base plate (1), and a guide groove (10) is provided on the long strip base plate (1) along its length direction. A pair of movable seats (2) are movably provided on the guide groove (10). A vertical plate (20) is welded to the upper end of the movable seat (2). A positioning mechanism is provided on the inner wall of the vertical plate (20). The positioning mechanism includes a mounting plate (3) that is installed on the inner wall of the upper end of the upright plate (20) by screws. The inner end of the mounting plate (3) is provided with an inner extension column (30). The inner end of the inner extension column (30) is provided with a placement column (31) by screws. The periphery of the placement column (31) is provided with a groove (32). The inner end of the placement column (31) is connected by two pairs of limit screws (48) by thread. Each pair of limit screws (48) is movably provided with a movable plate (46). The movable plates (46) are symmetrically arranged. A pair of guide holes (47) are opened on the movable plate (46). The guide holes (47) are arranged horizontally. The limit screws (48) are inserted into the guide holes (47). The outer end of the movable plate (46) is fitted with a wing plate (49) by screws. The inner end of the wing plate (49) is welded with an inner pressure arc plate (50). The inner pressure arc plate (50) is located on both sides of the outer periphery of the placement column (31).

2. The silencer pipe fitting welding positioning device according to claim 1, characterized in that, An mounting platform (33) is installed on the inner end of the placement column (31) by screws. An inner plate (34) is welded to the outer end of the mounting platform (33). A lead screw (35) is rotatably mounted on the inner plate (34). A pair of limit nuts (36) are fixed to the upper end of the lead screw (35) by threads. The limit nuts (36) are located on the inner and outer sides of the inner plate (34). A movable seat (37) is connected to the lead screw (35) by threads. An end cap (38) is provided at the lower end of the lead screw (35). A concave plate (40) is installed on the inner end of the movable seat (37) by screws. The inner plate (34) and the inner extension column ( 30) Located in the groove of the concave plate (40), the concave plate (40) is symmetrically provided with vertically arranged waist-shaped holes (41), and the two ends of the mounting platform (33) are connected by threaded guide screws (39). The guide screws (39) pass through the waist-shaped holes (41). The concave plate (40) is symmetrically provided with oblique holes (42). The upper end of the oblique holes (42) extends inward at an inclination. The oblique holes (42) are movably provided with movable rods (43). The inner end of the movable rods (43) is provided with inner blocks (45). The inner blocks (45) are welded to the inner end of the movable plate (46).

3. The silencer pipe fitting welding positioning device according to claim 2, characterized in that, The outer end of the movable rod (43) is connected to an outer nut (44) by a thread, and the outer nut (44) is located on the outside of the concave plate (40).

Images