Automatic saddle welding device for small barrel flanges

Abstract

The utility model discloses an automatic saddle welding device for a small barrel flange, which comprises a mounting plate, a shell, a fixing plate, a rotating plate, a servo motor, a first-stage gear, a second-stage gear, a third-stage gear, a fourth-stage double-tooth gear, a fifth-stage gear, a positioning shaft, a pressure head, a cam mechanism and a welding gun adjusting mechanism, and the upper and lower ends of the positioning shaft are rotationally connected with the upper and lower parts of the shell through first ball bearings. By means of the device, flange saddle welding on a small barrel can be achieved, automatic welding is facilitated, and guarantee is provided for high-quality welding; the development of the equipment can further reduce the labor intensity and working skills of operators, improve the consistency of welding quality, and improve the automation level and capability for the manufacturing of flange welding of small cylinders.

Description

Technical Field

[0001] This utility model belongs to the field of automated welding technology, and in particular relates to an automatic saddle welding device for small cylindrical flanges. Background Technology

[0002] Taking small containers as an example, in order to fill the container with liquid, it is necessary to have an inlet and an outlet, and sometimes a drain outlet, etc., with flanges that are orthogonally or laterally connected to the cylinder. These small containers are widely used in industrial fields such as water affairs, water conservancy and hydropower projects, petrochemical engineering, gas engineering, fire protection engineering, schools and hospitals, and industrial and civil building engineering, and their application range is very wide.

[0003] Orthogonal flange saddles are doubly symmetrical, meaning they go from a high point, traverse 90° to a low point, then traverse 90° back to the high point, and then traverse 180° back to the starting point. This requires two cycles for one round of welding. Side-crossing flange saddles, on the other hand, only require one cycle from high to low and back again. Previously, this type of flange saddle welding was mainly done manually with electric arc welding, requiring workers to undergo extensive training, demanding high technical skills, being difficult to operate, having difficulty guaranteeing quality, and resulting in low production efficiency. Robotic welding requires precise positioning of the cylinder body, or the addition of vision sensors to automatically locate weld seams. This results in high equipment costs and also requires highly skilled operators. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an automatic saddle welding device for small cylindrical flanges, which automatically follows the saddle trajectory and adjusts the welding torch to align with the weld seam according to different saddle rotation saddle types, thereby realizing automatic MAG welding of flanges on small cylindrical bodies.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: an automatic saddle welding device for small cylindrical flanges, comprising a mounting plate, a housing, a fixing plate, a rotating plate, a servo motor, a first-stage gear, a second-stage gear, a third-stage gear, a fourth-stage double-tooth gear, a fifth-stage gear, a positioning shaft, a pressure head, a cam mechanism, and a welding torch adjustment mechanism. The fixing plate is fixedly mounted on the top of the housing. The upper and lower ends of the positioning shaft are rotatably connected to the upper and lower parts of the housing respectively through first ball bearings. The pressure head is coaxially rotatably mounted on the lower end of the positioning shaft. The second-stage gear is coaxially and fixedly mounted on the top end of the positioning shaft. The mounting plate is fixedly mounted on the second-stage gear. The servo motor is fixedly mounted on the fixing plate. The first-stage gear is coaxially and fixedly mounted on the output shaft of the servo motor. The first-stage gear and the second-stage gear are meshed and connected. The third-stage gear, the fourth-stage double-tooth gear, and the fifth-stage gear are all rotatably mounted on the rotating plate through their central shafts. The third-stage gear and the fourth-stage double-tooth gear are meshed and connected. The fifth-stage gear and the fourth-stage double-tooth gear are meshed and connected.

[0006] The cam mechanism consists of a reversing mechanism, a cam seat, an adjusting block, an adjusting bolt, a first connecting rod, and a second connecting rod. The reversing mechanism is fixedly mounted on a fixed plate. The central shaft of the fourth-stage double-tooth gear is coaxially and fixedly connected to the input shaft of the reversing mechanism. The rotating plate is provided with an arc-shaped guide hole centered on the central shaft of the fourth-stage double-tooth gear. A guide limit rod is fixedly mounted on the fixed plate and slidably mounted in the arc-shaped guide hole. Two pin holes are also fixedly mounted on the rotating plate, and positioning pins can be inserted into the pin holes. The center of the cam seat is fixedly mounted on the output shaft of the reversing mechanism. The adjusting block is slidably mounted in the slide groove of the cam seat. A connecting plate is fixedly mounted at one end of the slide groove. The adjusting bolt is rotatably mounted on the connecting plate through a second ball bearing. The lower end of the adjusting bolt is screwed to the adjusting block. The two ends of the first connecting rod are respectively hinged to the adjusting block and the second connecting rod.

[0007] The welding torch adjustment mechanism comprises a first rack, a first transmission seat, a first adjustment knob, a first slider, a linear slide rail, a second rack, a second transmission seat, a second adjustment knob, and a welding torch body. The linear slide rail is vertically fixedly mounted on the housing. The first slider is slidably mounted on the linear slide rail. The other end of the second connecting rod is fixedly connected to the first slider. The first transmission seat is fixedly mounted on the first slider. The first rack is horizontally slidably mounted inside the first transmission seat. The first adjustment knob is rotatably mounted on the first transmission seat. A first drive gear is coaxially fixedly mounted on the inner end of the first adjustment knob. The first drive gear meshes with the first rack for transmission. The second transmission seat is fixedly mounted on the right end of the first rack. The second rack is vertically slidably mounted inside the second transmission seat. The welding torch body is fixedly mounted on the lower end of the second rack. The second adjustment knob is rotatably mounted on the second transmission seat. A second drive gear is coaxially fixedly mounted on the inner end of the second adjustment knob. The second drive gear meshes with the second rack for transmission.

[0008] Furthermore, the positioning surface of the pressure head is configured as a frustum-shaped structure.

[0009] Furthermore, scales are provided on both sides of the slide.

[0010] Furthermore, the positioning pin is configured as a spring pin, and the positioning pin is fixedly mounted on the fixing plate.

[0011] Furthermore, the second rack is fixedly mounted with a clamping block, the clamping block having an open through hole, the welding torch body is fixedly mounted on a cylindrical rod, the cylindrical rod is installed in the through hole, and the clamping block is also screwed with a bolt that causes the through hole to contract and clamp the cylindrical rod.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] 1. This device enables flange saddle welding on small cylinders, which facilitates automated welding and ensures high-quality welding.

[0014] 2. The development of this equipment can further reduce the labor intensity and work skills of operators, improve the consistency of welding quality, and enhance the level and capability of automation in the manufacturing of flange welding for small cylinders. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is the front view of this utility model.

[0018] Figure 3 This is a perspective view of the present invention excluding the mounting plate.

[0019] Figure 4 This is a top view of the present invention excluding the mounting plate.

[0020] Figure 5 It is a 3D view of the installation structure of the fixed plate and the rotating plate.

[0021] Figure 6 This is a top view of the installation structure of the fixed plate and the rotating plate. Detailed Implementation

[0022] The present invention will now be described in detail with reference to specific embodiments:

[0023] like Figures 1 to 6The illustrated automatic saddle welding device for small cylindrical flanges includes a mounting plate 1, a housing 2, a fixing plate 20, a rotating plate 3, a servo motor 40, a primary gear 41, a secondary gear 42, a tertiary gear 43, a quaternary double-tooth gear 44, a quinary gear 45, a positioning shaft 9, a pressure head 91, a cam mechanism, and a welding torch adjustment mechanism. The fixing plate 20 is fixedly mounted on the top of the housing 2. The upper and lower ends of the positioning shaft 9 are rotatably connected to the upper and lower parts of the housing 2 respectively through first ball bearings. The pressure head 91 is coaxially rotatably mounted on the lower end of the positioning shaft 9. The secondary gear 42 is coaxial and fixed. Mounted on the top of the positioning shaft 9, the mounting plate 1 is fixedly mounted on the secondary gear 42, the servo motor 40 is fixedly mounted on the fixing plate 20, the primary gear 41 is coaxial and fixedly mounted on the output shaft of the servo motor 40, the primary gear 41 is meshed with the secondary gear 42 for transmission, the tertiary gear 43, the fourth-stage double-tooth gear 44, and the fifth-stage gear 45 are all rotatably mounted on the rotating plate 3 through their central shafts, the small teeth of the tertiary gear 43 are meshed with the small teeth of the fourth-stage double-tooth gear 44 for transmission, and the large teeth of the fifth-stage gear 45 are meshed with the large teeth of the fourth-stage double-tooth gear 44 for transmission.

[0024] The cam mechanism consists of a reversing mechanism 50, a cam seat 5, an adjusting block 51, an adjusting bolt 52, a first connecting rod 53, and a second connecting rod 54. The reversing mechanism 50 is fixedly mounted on the fixed plate 20. The central shaft of the fourth-stage double-tooth gear 44 is coaxially and fixedly connected to the input shaft of the reversing mechanism 50. The rotating plate 3 is provided with an arc-shaped guide hole 31 with the central shaft of the fourth-stage double-tooth gear 44 as the axis. A guide limiting rod 21 is fixedly mounted on the fixed plate 20, and the guide limiting rod 21 is slidably mounted in the arc-shaped guide hole 31. Two pin holes 32 are also fixedly installed on the rotating plate 3. A positioning pin 33 can be inserted into the pin holes 32. The center of the cam seat 5 is fixedly installed on the output shaft of the reversing mechanism 50. The adjusting block 51 is slidably installed in the slide groove 501 of the cam seat 5. A connecting plate is fixedly installed at one end of the slide groove 501. The adjusting bolt 52 is rotatably installed on the connecting plate through the second ball bearing. The lower end of the adjusting bolt 52 is screwed to the adjusting block 51. The two ends of the first connecting rod 53 are respectively hinged to the adjusting block 51 and the second connecting rod 54.

[0025] The welding torch adjustment mechanism comprises a first rack 6, a first transmission seat 61, a first adjustment knob 62, a first slider 63, a linear slide rail 64, a second rack 7, a second transmission seat 71, a second adjustment knob 72, and a welding torch body 8. The linear slide rail 64 is vertically fixedly mounted on the housing 2. The first slider 63 is slidably mounted on the linear slide rail 64. The other end of the second connecting rod 54 is fixedly connected to the first slider 63. The first transmission seat 61 is fixedly mounted on the first slider 63. The first rack 6 is horizontally slidably mounted within the first transmission seat 61. The first adjustment knob 62 rotates... The welding torch body 8 is mounted on the first transmission seat 61. A first drive gear is coaxially fixedly mounted on the inner end of the first adjustment knob 62, and the first drive gear meshes with and drives the first rack 6. A second transmission seat 71 is fixedly mounted on the right end of the first rack 6, and the second rack 7 is vertically slidably mounted within the second transmission seat 71. The welding torch body 8 is fixedly mounted on the lower end of the second rack 7. The second adjustment knob 72 is rotatably mounted on the second transmission seat 71, and a second drive gear is coaxially fixedly mounted on the inner end of the second adjustment knob 72, and the second drive gear meshes with and drives the second rack 7. Rotating the combination of the first adjustment knob 62 and the first drive gear causes the first drive gear to drive the first rack 6 to move left and right, adjusting the left and right position of the welding torch body 8. Rotating the combination of the second adjustment knob 72 and the second drive gear causes the second drive gear to drive the second rack 7 to move up and down, adjusting the up and down position of the welding torch body 8.

[0026] The positioning surface of the pressure head 91 is set as a frustum-shaped structure, which can be adapted to the positioning requirements of inlet and outlet connectors of various diameter sizes.

[0027] The slide 501 is equipped with scales on both sides. By referring to the scales, it is easy to observe and judge the amount of movement adjustment of the adjusting block 51.

[0028] The positioning pin 33 is a spring pin, which is fixedly installed on the fixing plate 20. Manually pulling the pin rod outward can dislodge the pin rod from the pin hole 32. After releasing the pin rod, the pin rod can be reset and inserted into the pin hole 32 to play a limiting role.

[0029] The second rack 7 is fixedly mounted with a clamping block 81, which has an open through hole. The welding torch body 8 is fixedly mounted on a cylindrical rod 82, which is installed in the through hole. The clamping block 81 is also screwed with a bolt that causes the through hole to contract and clamp the cylindrical rod 82. The cylindrical rod 82 and the clamping block 81 cooperate to adjust the front and rear position and rotation angle of the welding torch body 8.

[0030] For workpieces with flange welding of small cylindrical bodies, there are two types: orthogonal flange saddle type and side-intersecting flange saddle type.

[0031] During orthogonal flange saddle welding, rotating plate 3 causes the third-stage gear 43 to mesh with the second-stage gear 42, and the fifth-stage gear 45 to separate from the second-stage gear 42. The rotating plate 3 is then fixed using positioning pin 33. Servo motor 40 drives the first-stage gear 41 to mesh with the second-stage gear 42. The combination of servo motor 40, first-stage gear 41, housing 2, fixing plate 20, and rotating plate 3 rotates around the central axis of the combination of second-stage gear 42 and mounting plate 1. The small teeth of the third-stage gear 43 and the fourth-stage double-tooth gear 44 mesh, and the fourth-stage double-tooth gear 44 drives the reversing mechanism 50 to drive the cam seat 5. The adjusting block 51 is in a non-central position of the cam seat 5, forming a cam structure. When the cam structure rotates, it drives the first connecting rod 53 to swing. When the first connecting rod 53 swings, it drives the first slider 63 to move up and down along the linear slide rail 64, thereby realizing the up and down movement of the welding torch body 8 and achieving orthogonal flange saddle welding.

[0032] During the welding of the saddle-shaped flange, the rotating plate 3 is rotated to make the fifth gear 45 mesh with the second gear 42 for transmission, and the third gear 43 separates from the second gear 42. The rotating plate 3 is fixed with the positioning pin 33. The servo motor 40 drives the first gear 41 to mesh with the second gear 42 for transmission. The combination of the servo motor 40, the first gear 41, the housing 2, the fixing plate 20, and the rotating plate 3 rotates around the central axis of the combination of the second gear 42 and the mounting plate 1. The large teeth of the fifth gear 45 and the fourth-stage double-tooth gear 44 mesh for transmission. The fourth-stage double-tooth gear 44 drives the reversing mechanism 50 to drive the cam seat 5. The adjusting block 51 is in the non-center position of the cam seat 5 to form a cam structure. When the cam structure rotates, it drives the first connecting rod 53 to swing. When the first connecting rod 53 swings, it drives the first slider 63 to move up and down along the linear slide rail 64, thereby realizing the up and down movement of the welding torch body 8 and realizing the orthogonal flange saddle-shaped welding.

[0033] Rotate the adjusting bolt 52 to adjust the eccentric position of the adjusting block 51, and rotate the first adjusting knob 62 and the second adjusting knob 72 to adjust the left and right and up and down positions of the welding torch body 8, so as to adapt to the welding operation needs of small containers of different diameters and inlet and outlet connectors of different diameters.

Claims

1. An automatic saddle welding device for small cylindrical flanges, characterized in that: The assembly includes a mounting plate (1), a housing (2), a fixing plate (20), a rotating plate (3), a servo motor (40), a first-stage gear (41), a second-stage gear (42), a third-stage gear (43), a fourth-stage double-tooth gear (44), a fifth-stage gear (45), a positioning shaft (9), a pressure head (91), a cam mechanism, and a welding torch adjustment mechanism. The fixing plate (20) is fixedly mounted on the top of the housing (2). The upper and lower ends of the positioning shaft (9) are rotatably connected to the upper and lower parts of the housing (2) respectively through first ball bearings. The pressure head (91) is coaxially rotatably mounted on the lower end of the positioning shaft (9). The second-stage gear (42) is coaxially and fixedly mounted on the positioning shaft (9). At the top, the mounting plate (1) is fixedly mounted on the secondary gear (42), the servo motor (40) is fixedly mounted on the fixing plate (20), the primary gear (41) is coaxial and fixedly mounted on the output shaft of the servo motor (40), the primary gear (41) is meshed with the secondary gear (42) for transmission, the tertiary gear (43), the fourth-stage double-tooth gear (44), and the fifth-stage gear (45) are all rotatably mounted on the rotating plate (3) through their central shafts, the tertiary gear (43) is meshed with the small tooth of the fourth-stage double-tooth gear (44) for transmission, and the fifth-stage gear (45) is meshed with the large tooth of the fourth-stage double-tooth gear (44) for transmission; The cam mechanism consists of a reversing mechanism (50), a cam seat (5), an adjusting block (51), an adjusting bolt (52), a first connecting rod (53), and a second connecting rod (54). The reversing mechanism (50) is fixedly mounted on the fixed plate (20). The central shaft of the fourth-stage double-tooth gear (44) is coaxially and fixedly connected to the input shaft of the reversing mechanism (50). The rotating plate (3) is provided with an arc-shaped guide hole (31) with the central shaft of the fourth-stage double-tooth gear (44) as the axis. A guide limit rod (21) is fixedly mounted on the fixed plate (20). The guide limit rod (21) is slidably mounted in the arc-shaped guide hole (31). Two pin holes (32) are fixedly installed on the rotating plate (3). A positioning pin (33) can be inserted into the pin hole (32). The center of the cam seat (5) is fixedly installed on the output shaft of the reversing mechanism (50). The adjusting block (51) is slidably installed in the slide groove (501) of the cam seat (5). A connecting plate is fixedly installed at one end of the slide groove (501). The adjusting bolt (52) is rotatably installed on the connecting plate through the second ball bearing. The lower end of the adjusting bolt (52) is screwed to the adjusting block (51). The two ends of the first connecting rod (53) are respectively hinged to the adjusting block (51) and the second connecting rod (54). The welding torch adjustment mechanism consists of a first rack (6), a first transmission seat (61), a first adjustment knob (62), a first slider (63), a linear slide rail (64), a second rack (7), a second transmission seat (71), a second adjustment knob (72), and a welding torch body (8). The linear slide rail (64) is vertically fixed on the housing (2), the first slider (63) is slidably mounted on the linear slide rail (64), the other end of the second connecting rod (54) is fixedly connected to the first slider (63), the first transmission seat (61) is fixedly mounted on the first slider (63), and the first rack (6) is horizontally slidably mounted inside the first transmission seat (61). The knob (62) is rotatably mounted on the first transmission seat (61). The first driving gear is coaxially fixedly mounted on the inner end of the first adjustment knob (62). The first driving gear meshes with the first rack (6) for transmission. The second transmission seat (71) is fixedly mounted on the right end of the first rack (6). The second rack (7) is vertically slidably mounted in the second transmission seat (71). The welding torch body (8) is fixedly mounted on the lower end of the second rack (7). The second adjustment knob (72) is rotatably mounted on the second transmission seat (71). The second driving gear is coaxially fixedly mounted on the inner end of the second adjustment knob (72). The second driving gear meshes with the second rack (7) for transmission.

2. The automatic saddle welding device for small cylindrical flanges according to claim 1, characterized in that: The positioning surface of the pressure head (91) is configured as a frustum-shaped structure.

3. The automatic saddle welding device for small cylindrical flanges according to claim 1, characterized in that: A scale is provided on both sides of the slide (501).

4. The automatic saddle welding device for small cylindrical flanges according to claim 1, characterized in that: The positioning pin (33) is configured as a spring pin, and the positioning pin is fixedly installed on the fixing plate (20).

5. The automatic saddle welding device for small cylindrical flanges according to claim 1, characterized in that: The second rack (7) is fixedly mounted with a clamping block (81), the clamping block (81) has an open through hole, the welding gun body (8) is fixedly mounted on a cylindrical rod (82), the cylindrical rod (82) is installed in the through hole, and the clamping block (81) is also screwed with a bolt that causes the through hole to shrink and clamp the cylindrical rod (82) in place.

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