Welding tool for duct flange welding

Abstract

The present invention relates to a welding tool for welding a duct flange, comprising two vertical columns, a first beam being connected between the top ends of the columns; brackets lower than the first beam being provided on both columns, a second beam being parallel to the first beam being connected between the two brackets; an electric control box being provided on the first beam for sliding along the length direction of the first beam, a welding oscillator being provided on the electric control box for sliding along the length direction of the columns toward one side of the second beam, a welding gun being provided on the welding oscillator; a plurality of clamping and fixing devices for fixing the duct flange being provided at intervals on the second beam for spacing along the length direction of the second beam. The present invention has the advantages of reducing welding weaknesses of the duct flange and the pipe body and improving welding operation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of air duct welding equipment, and in particular to a welding tool for welding air duct flanges. Background Art

[0002] Figure 1 The figure shows a duct having a rectangular cross section. After the tube body 1 is formed by processing iron sheet, the duct flange 2 needs to be welded at the opening of the end of the duct so as to realize the connection between the sections of the duct when the duct is assembled later. Due to the large size of the duct, the duct flange 2 and the duct body 1 are generally welded and fixed by manual welding. Before welding, the flange sheet is first welded into a rectangular frame duct flange 2 by manual welding or with the help of welding tools, and then the duct body 1 is assembled with the duct flange 2, and the duct flange 2 and the duct body 1 are welded and fixed by the operator holding an electric welding gun 72. When the duct flange 2 and the duct body 1 are welded and fixed in this way, on the one hand, manual operation often makes it difficult to ensure the uniformity of the welding points, and on the other hand, it is easy to leave welding dead points between the duct flange 2 and the duct body 1 that are not fixed by soldering. The uneven distribution of welding points and the existence of welding dead points can affect the performance of the duct, so that there is a connection weakness between the duct body 1 and the duct flange 2, which is easy to cause the duct flange 2 and the duct body 1 to separate at the stress weak point during the subsequent use. Summary of the invention

[0003] In view of the shortcomings of the prior art, an object of the present invention is to provide a welding tool for welding a duct flange, which has the advantage of being able to reduce welding weaknesses between the duct flange and the pipe body.

[0004] The above object of the present invention is achieved through the following technical solutions:

[0005] A welding tool for welding an air duct flange comprises two vertical columns, a first beam being connected between the top ends of the columns; brackets lower than the first beam are provided on the two columns, a second beam parallel to the first beam is connected between the two brackets; an electric control box is provided on the first beam so as to slide along the length direction of the first beam, a welding oscillator is provided on the electric control box so as to slide toward one side of the second beam in a direction parallel to the length direction of the columns, a welding oscillator is provided on the welding oscillator; a plurality of clamping and fixing devices for fixing the air duct flange are provided on the second beam at intervals along the length direction of the second beam.

[0006] By adopting the above technical solution, when welding and fixing the duct flange and the pipe body, simple spot welding can be performed first to preliminarily fix the duct flange to the pipe mouth of the pipe body. Then, the preliminarily welded and fixed duct is moved to the bottom of the first beam so that the edge of the duct flange is fixed by the clamping and fixing device set on the second beam. The welding oscillator and the welding gun are driven by the electric control box slidably set on the first beam to weld the butt joint between the duct flange and the pipe body. The welding oscillator can slide in a direction parallel to the length of the column, so as to adjust the position from the bottom end of the welding gun to the welding point; at the same time, the welding oscillator can make the welding gun swing welding, so that the butt joint is fully filled with solder, which greatly reduces the welding weaknesses. Compared with traditional manual welding, it has the advantages of simple welding operation and efficient welding operation. After completing the welding and fixing of one side of the duct flange, rotate the duct and weld and fix the next side.

[0007] Furthermore, the clamping and fixing device includes a pad fixed to the second cross beam, and a clamping elbow clamp for cooperating with the pad to clamp the air duct flange is provided on the top of the pad.

[0008] By adopting the above technical solution, the edge of the duct flange is fitted to the top surface of the pad, and then the flange can be quickly clamped with the help of the clamping elbow clamp, which is not easy to cause the welding point to shift due to looseness during the welding process. It is not only simple to operate, but also further improves the welding quality. The number of clamping and fixing devices can be set according to needs, and it can be determined according to the single-side length of the duct flange to be welded, so as to ensure that the duct flange is firmly fixed during welding. The clamping elbow clamp can choose common elbow clamp types or models, such as C-LD-20800 horizontal elbow clamp, C-LD-201 horizontal elbow clamp, MC01-2B horizontal elbow clamp, C-LD-101A vertical clamping elbow clamp, etc.

[0009] Furthermore, a slide rail is provided on the second cross beam along the length direction, the cushion blocks are all slidably connected to the slide rail, and the cushion blocks are all provided with a fastening component for fixing the position of the cushion blocks.

[0010] By adopting the above technical solution, the pads are arranged by the slider, which not only makes the pads at the same height and on the same straight line, but also facilitates the fixing of the duct flange and the positioning of the duct flange to be welded, which is beneficial to improve the welding quality. At the same time, according to the different sizes of the products to be welded, the pads can be slid to the appropriate position and then locked with the fastening components, which increases the applicability of the welding tooling.

[0011] Furthermore, it also includes a pad arranged on the ground, and the pad is rotatably connected to a supporting plate located below the first cross beam.

[0012] By adopting the above technical solution, the air duct can be conveniently rotated with the help of the rotatable support plate, and the welding position can be conveniently switched after the welding of one side of the air duct flange is completed, which greatly increases the convenience of welding operation.

[0013] Furthermore, each of the columns includes a first rod body and a second rod body; one end of the first rod body is connected to the first crossbeam, and the other end is hinged with at least two first hinged rods; each of the first hinged rods is hinged with a second hinged rod at one end away from the first rod body, and the second hinged rod is connected to the top end of the second rod body at one end away from the first hinged rod; and also includes a driving device for driving the first rod body and the second rod body to move closer to or away from each other along the length direction of the column; the first crossbeam and the bracket are both connected to the first rod body.

[0014] By adopting the above technical solution, the driving device can be used to drive the first rod body and the second rod body to move away from or close to each other, thereby adjusting the support height of the column, so that the welding tool can be used for welding air ducts of different sizes. By adjusting the support height of the column, the placement height of the air duct can be quickly adapted, which greatly increases the applicability of the welding tool for welding the air duct flange of the present invention.

[0015] Furthermore, each of the first rods is provided with a first cavity, and the driving device comprises an adjusting screw arranged along the axis direction of the first rod; the top end of the adjusting screw passes through the top wall of the first cavity and out from the top end of the first rod, and the other end is rotatably connected to the top end of the second rod.

[0016] By adopting the above technical solution, the first rod body can be driven to move up and down by rotating the adjusting screw, thereby changing the overall supporting height of the column, and the operation is simple and convenient.

[0017] Furthermore, a second cavity connected to the first cavities in the two first rods is provided in the first crossbeam, pulleys are coaxially provided on the two adjusting screws, and a synchronous belt located in the second cavity is commonly sleeved on the two pulleys.

[0018] By adopting the above technical solution and setting the synchronous belt and pulley, when one adjusting screw rotates, the other adjusting screw rotates synchronously, making the operation of adjusting the support height of the column simpler.

[0019] Furthermore, a hand wheel is coaxially provided at the top end of the adjusting screw.

[0020] By adopting the above technical solution, the hand wheel is easy to hold, making the operation of rotating the adjusting screw simpler and easier.

[0021] In summary, the present invention includes at least one of the following beneficial technical effects:

[0022] 1. When welding and fixing the duct flange and the pipe body, you can first perform simple spot welding to preliminarily fix the duct flange to the pipe mouth of the pipe body; then, move the preliminarily welded and fixed duct to the bottom of the first beam, so that the edge of the duct flange is fixed by the clamping and fixing device set on the second beam; drive the welding oscillator and the welding gun to weld the butt joint between the duct flange and the pipe body by sliding the electric control box set on the first beam; the welding oscillator can slide in a direction parallel to the length of the column, so as to adjust the position from the bottom of the welding gun to the welding point; at the same time, the welding oscillator can make the welding gun swing welding, so that the butt joint is fully filled with solder, which greatly reduces the welding weaknesses; compared with traditional manual welding, it has the advantages of simple welding operation and efficient welding operation. After completing the welding and fixing between one side of the duct flange and the pipe body, rotate the duct and weld the next side;

[0023] 2. In the preferred solution, the column is composed of a first rod body, a first hinged rod, a second hinged rod and a second rod body. Driven by a driving device, the height of the support rod of the column can be easily adjusted, so that it can adapt to welding operations of air ducts of different sizes, and has excellent applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the air duct in the background technology;

[0025] Figure 2 The structure of the welding tool for welding the air duct flange in Example 1 is shown in FIG. Figure 1 ;

[0026] Figure 3 yes Figure 2 A magnified view of part A;

[0027] Figure 4 The structure of the welding tool for welding the air duct flange in Example 1 is shown in FIG. Figure 2 ;

[0028] Figure 5 yes Figure 4 A magnified view of part B;

[0029] Figure 6 It is a structural schematic diagram of a welding tool for welding a duct flange in Example 2;

[0030] Figure 7 is a cross-sectional view of a welding tool for welding a duct flange in Example 2;

[0031] Figure 8 yes Figure 7 Magnified view of part C.

[0032] In the figure, 1. pipe body; 2. duct flange; 3. column; 31. first rod body; 311. first cavity; 32. second rod body; 33. adjusting screw; 331. hand wheel; 332. pulley; 34. first hinge rod; 35. second hinge rod; 4. first cross beam; 41. second cavity; 411. synchronous belt; 5. bracket; 6. second cross beam; 61. slide rail; 62. mounting arm; 621. laser marker; 7. electric control box; 71. welding oscillator; 72. welding gun; 73. baffle; 8. pad; 81. tightening bolt; 82. clamping elbow clamp; 9. pad; 91. support plate. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0034] Embodiment 1:

[0035] Reference Figure 2 , is a welding tool for duct flange welding disclosed in the present invention, comprising a rectangular backing plate 9 set on the ground. A circular support plate 91 is rotatably connected to the top surface of the backing plate 9. The support plate 91 is used to place the duct to be welded. During the welding operation, the welding position can be switched by rotating the support plate 91, which is convenient and easy to operate.

[0036] Reference Figure 2 and Figure 3 , a vertical column 3 fixed to the ground is arranged on each side of the pad 9, and the column 3 is arranged near the short side of one side of the pad 9. The two columns 3 are of equal length, and a first beam 4 is connected between the top ends. The first beam 4 is hollow, and its length direction is perpendicular to the length direction of the column 3. An electric control box 7 is slidably arranged on the first beam 4 along the length direction of the first beam 4. The electric control box 7 is arranged by an electric slide rail and can slide along the length direction of the first beam 4. A welding oscillator 71 is slidably arranged on one side of the electric control box 7 along the length direction parallel to the column 3. The welding oscillator 71 can be selected from commercially available products, such as a 1025LA welding gun 72 left and right oscillator, a 100LP2 welding gun 72 oscillator, a 30LP welding oscillator 71, etc. In this embodiment, a 30LP welding oscillator 71 (Nanjing Yuanxin Automation Technology Co., Ltd.) is specifically selected. Specifically, a pneumatic cylinder is provided on the side plate of the electric control box 7, and the welding oscillator 71 is connected to the movable end of the pneumatic cylinder, so that the welding oscillator 71 can be driven to move in a direction parallel to the column 3 by means of the pneumatic cylinder. A welding gun 72 is provided on the welding oscillator 71, and the position of the welding gun 72 can be adjusted to adapt to the welding position by moving the electric control box 7 and the welding oscillator 71. During the welding operation, the welding oscillator 71 causes the welding gun 72 to swing, so that the solder evenly fills the weld, which has the effect of improving the welding quality.

[0037] Reference Figure 2 and Figure 3In order to facilitate the operator to observe the welding situation during welding, a baffle 73 is also provided on the side of the welding gun 72 to block the sparks generated by welding. The material of the baffle 73 can be the same as the material of the protective light-transmitting plate on the conventional electric welding protective mask.

[0038] Reference Figure 2 and Figure 3 , the two columns 3 are provided with brackets 5 which are lower than the first beam 4, and the two brackets 5 are located on the same side of the first beam 4. A second beam 6 is installed on the two brackets 5. The length direction of the second beam 6 is parallel to the length direction of the first beam 4, and the second beam 6, the welding oscillator 71 and the welding gun 72 are located on the same side of the length direction of the first beam 4. A plurality of clamping and fixing devices are arranged at intervals on the second beam 6 to clamp and fix the duct flange 2 to be welded.

[0039] Reference Figure 4 and Figure 5 , a slide rail 61 is provided on the side of the second beam 6 facing the column 3 along the length direction of the second beam 6. The clamping and fixing device includes a pad 8 slidably connected to the slide rail 61, a clamping toggle clamp 82 arranged on the top surface of the pad 8, and a fastening bolt 81 inserted on the side of the pad 8. According to the size of the actual welded air duct, the required number of pads 8 can be set. The position of the pad 8 can be adjusted by sliding the pad 8 along the slide rail 61. After adjusting to the right position, the fastening bolt 81 can be tightened to lock the position of the pad 8. The clamping toggle clamp 82 is arranged on the top surface of the pad 8, and its clamping head is facing the side of the first beam 4. The edge of the air duct flange 2 can be clamped and fixed to the top surface of the pad 8 by the clamping toggle clamp 82 and the pad 8. The clamping toggle clamp 82 can be a commercially available horizontal clamping toggle clamp or a vertical clamping toggle clamp. In this embodiment, the C-LD-20800 horizontal toggle clamp is specifically selected.

[0040] Reference Figure 4 and Figure 5 In order to facilitate the determination of the position when clamping and fixing the duct flange 2, in this embodiment, a mounting arm 62 is provided at one end of the second crossbeam 6, and a laser marker 621 is provided at the end of the mounting arm 62. The duct flange 2 can be positioned conveniently and quickly by using the light beam emitted by the laser marker 621 to avoid skewness when clamping and fixing.

[0041] The implementation principle of this embodiment is:

[0042] First, use manual electric welding to preliminarily fix the duct flange 2 to the end of the pipe body 1. Then, place the duct on the support plate, and make the edge of one side of the duct flange 2 at the top of the duct fit the top surface of the cushion block 8. After adjusting to the appropriate position, use the clamping elbow clamp 82 to clamp the edge of the duct flange 2 between the clamp head of the clamping elbow clamp 82 and the top surface of the cushion block 8. Then, with the help of the movement of the electric control box 7 and the welding oscillator 71, the welding gun 72 performs oscillating welding on the joint between the duct flange 2 and the pipe body 1. Not only is the welding efficient, simple to operate and of high quality, it also greatly reduces welding defects. After completing the welding of one side of the duct flange 2, rotate the support plate 91 to switch the welding position.

[0043] Embodiment 2:

[0044] Reference Figure 6 , is a welding tool for welding duct flanges disclosed in the present invention, which is based on Example 1 and differs from Example 1 in that: the height of the column 3 in this embodiment is adjustable, and the height of the first beam 4 and the second beam 6 can be adjusted as needed to meet the welding operation requirements of ducts of different sizes.

[0045] Reference Figure 6 The column 3 includes a first rod body 31, a first hinge rod 34, a second hinge rod 35 and a second rod body 32. The first rod body 31 and the second rod body 32 are coaxially arranged. The first cross beam 4 and the bracket 5 are both connected to the first rod body 31. One end of the first hinge rod 34 is connected to the bottom end of the first rod body 31, and the other end is connected to the end of the second hinge rod 35. One end of the second hinge rod 35 away from the first hinge rod 34 is hinged to the top end of the second rod body 32. In this embodiment, the first hinge rod 34 and the second hinge rod 35 are both in the shape of long strips, and the hinge axes of the hinge points at both ends of the first hinge rod 34 and the second hinge rod 35 are parallel to the length direction of the first cross beam 4.

[0046] Reference Figure 7 and Figure 8 , each first rod body 31 is provided with a first cavity 311; the first cross beam 4 is a hollow structure, and a second cavity 41 is formed inside; each first rod body 31 is provided with an adjusting screw 33 along the axial direction. One end of the adjusting screw 33 passes through the bottom wall of the first cavity 311 and extends to be rotatably connected with the top end of the second rod body 32, and the other end passes through the top end of the first rod body 31 and then inserted into the second cavity 41, and passes through the first cross beam 4 and passes out from the top surface of the first cross beam 4. A hand wheel 331 is coaxially provided at the top end of the adjusting screw 33. The adjusting screw 33 can be rotated by turning the hand wheel 331, so that the distance between the first rod body 31 and the second rod body 32 increases or decreases, thereby adjusting the height of the first cross beam 4 and the second cross beam 6.

[0047] Reference Figure 7 and Figure 8In order to increase the convenience of the adjustment operation, a synchronous belt 411 is provided in the second cavity 41. The two adjusting screws 33 are coaxially provided with pulleys 332, and the pulleys 332 are located in the second cavity 41. The synchronous belt 411 is sleeved on the two pulleys 332 together. When one adjusting screw 33 is rotated, the other adjusting screw 33 rotates synchronously, so that a single person can also adjust the support height of the column 3.

[0048] The implementation principle of this embodiment is:

[0049] The difference between this embodiment and embodiment 1 is that the support height of the column 3 can be adjusted, and the height of the second crossbeam 6 can be determined according to the actual size of the air duct to be welded (the axial length of a single section of the air duct). Then, the hand wheel 331 at the top of any adjusting screw 33 is rotated to drive the adjusting screw 33 to rotate. During the circumferential rotation of the adjusting screw 33, the first rod body 31 moves up or down in the length direction of the adjusting screw 33, and the folding angle between the first hinge rod 34 and the second hinge rod 35 is changed accordingly for adaptive adjustment, thereby achieving the adjustment of the support height of the column 3 and adapting to the welding operation requirements of air ducts of different sizes. The first rod body 31 and the second rod body 32 are connected by the first hinge rod 34 and the second hinge rod 35, which does not hinder the adjustment of the support height of the column 3 and ensures that the column 3 has sufficient support reliability.

[0050] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding tool for duct flange welding, characterized in that: The welded air duct has a rectangular cross section and comprises a tube body (1) formed by processing iron sheet, and an air duct flange (2) is welded at the end opening of the tube body (1) of the welded air duct; the welding tool comprises two vertical columns (3), and a first crossbeam (4) is connected between the top ends of the columns (3); the two columns (3) A bracket (5) lower than the first crossbeam (4) is provided on each of the two crossbeams (5); a second crossbeam (6) parallel to the first crossbeam (4) is connected between the two brackets (5); an electric control box (7) is slidably provided on the first crossbeam (4) along the length direction of the first crossbeam (4); a welding oscillator (71) is slidably provided on the electric control box (7) toward one side of the second crossbeam (6) along the length direction parallel to the column (3); a welding gun (72) is provided on the welding oscillator (71); a plurality of clamping and fixing devices for fixing the air duct flange (2) are arranged at intervals on the second crossbeam (6) along the length direction of the second crossbeam (6); The clamping and fixing device comprises a cushion block (8) fixed to the second cross beam (6), and a clamping elbow clamp (82) is provided on the top of the cushion block (8) for cooperating with the cushion block (8) to clamp the air duct flange (2); a slide rail (61) is provided on the second cross beam (6) along the length direction, and the cushion blocks (8) are all slidably connected to the slide rail (61), and a fastening component for fixing the position of the cushion blocks (8) is provided on the cushion blocks (8); A mounting arm (62) is provided at one end of the second crossbeam (6), a laser marker (621) is provided at the end of the mounting arm (62), and the laser marker (621) emits a light beam to position the air duct flange (2); The welding tool also includes a pad (9) arranged on the ground, the pad (9) being rotatably connected to a support plate (91) located below the first crossbeam (4), the support plate (91) being used to place the air duct to be welded; Each of the uprights (3) comprises a first rod body (31) and a second rod body (32); one end of the first rod body (31) is connected to the first crossbeam (4), and the other end is hinged to at least two first hinged rods (34); each of the first hinged rods (34) is hinged to a second hinged rod (35) at one end away from the first rod body (31), and the end of the second hinged rod (35) away from the first hinged rod (34) is connected to the top end of the second rod body (32); The welding tool also includes a driving device for driving the first rod body (31) and the second rod body (32) to move closer to or farther from each other along the length direction of the column (3); the first crossbeam (4) and the bracket (5) are both connected to the first rod body (31); a first cavity (311) is provided in each of the first rod bodies (31); the driving device includes an adjusting screw (33) arranged along the axis direction of the first rod body (31); the top end of the adjusting screw (33) passes through the top wall of the first cavity (311) and comes out from the top end of the first rod body (31), and the other end is rotatably connected to the top end of the second rod body (32); the first crossbeam (4) is provided with a second cavity (41) connected to the first cavities (311) in the two first rod bodies (31); pulleys (332) are coaxially provided on the two adjusting screws (33), and a synchronous belt (411) located in the second cavity (41) is commonly sleeved on the two pulleys (332); When welding and fixing the duct flange (2) and the tube body (1), the duct flange (2) is firstly fixed to the end of the tube body (1) by spot welding, and then the duct to be welded is placed on the support plate (91), and one side edge of the duct flange (2) is made to fit the top surface of the cushion block (8), so that the edge of the duct flange (2) is fixed by the clamping and fixing device arranged on the second cross beam (6); the welding oscillator (71) and the welding gun (72) are driven by the electric control box (7) slidably arranged on the first cross beam (4), and the butt joint of the duct flange (2) and the tube body (1) is oscillatingly welded, so that the butt joint is fully filled with solder; after completing the welding and fixing between one side of the duct flange (2) and the tube body (1), the support plate (91) is rotated to rotate the duct to switch the welding position, and the next side of the duct flange (2) is welded and fixed.

2. The welding tool for duct flange welding according to claim 1 is characterized in that: The top end of the adjusting screw rod (33) is coaxially provided with a hand wheel (331).

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