Tensioning device for welding high-airtightness air pipe

Abstract

The utility model provides a tensioning device for welding a high-sealing air pipe, which comprises a rack, an eighth motor arranged on the rack, a rotating shaft arranged on one side of the rack and a tensioning mechanism arranged on the rotating shaft, and the rotating shaft is connected with the eighth motor through a coupler; the tensioning mechanism comprises a fixing ring, a sliding ring, a driving cylinder, connecting rod assemblies and tensioning rods, the fixing ring is fixedly arranged at one end of the rotating shaft in a sleeving mode, the sliding ring is arranged at the other end of the rotating shaft in a sleeving mode, the multiple connecting rod assemblies are evenly distributed between the fixing ring and the sliding ring, and each connecting rod assembly is connected with the corresponding tensioning rod parallel to the rotating shaft. According to the thin-wall air pipe butt-joint positioning device, butt-joint positioning during welding of thin-wall air pipes is achieved through the tensioning mechanism designed on the rotating shaft, butt-joint of the air pipes is convenient and fast, coaxiality after butt-joint is good, the rotating shaft can achieve the welding mode that a workpiece rotates and a welding gun is fixed, and welding quality and welding efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to an air duct welding technology, in particular to a tensioning device used for welding of highly sealed air ducts. Background Art

[0002] Metal ducts are often used for ventilation and air supply ducts, oil fume and dust removal ducts, and the connection between ducts is usually fixed by welding. Manual welding of ducts is usually done by two people, one person uses a tool to drive the duct to rotate, and the other person operates the welding equipment to weld the two ducts. The work intensity is high, and the close-range operation is more harmful to the human body.

[0003] In the prior art, there are already air duct welding equipment with automatic functions, such as patent CN116117423A, but the air duct welding equipment proposed in the patent has a low degree of automation and is only applicable to thick-walled air ducts that are not easily deformed, and has a small scope of application. A considerable number of air ducts are thin-walled, highly sealed air ducts. When these thin-walled, highly sealed air ducts are laid flat and docked, the pipe openings usually have a certain degree of deformation, making docking difficult, and it is difficult to maintain the coaxiality of the docking during welding. The existing welding equipment and manual welding cannot guarantee the welding quality. Utility Model Content

[0004] In response to the problems raised in the background technology, the purpose of the utility model is to provide a tensioning device for high-sealed air duct welding, which realizes the docking positioning during the welding of thin-walled air ducts by designing a tensioning mechanism. The docking of the air ducts is convenient and quick, and the coaxiality after docking is good, which can greatly improve the welding quality and welding efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tensioning device for welding a highly sealed air duct comprises a stand and an eighth motor arranged on the stand, a rotating shaft arranged on one side of the stand and a tensioning mechanism arranged on the rotating shaft, wherein the rotating shaft is connected to the eighth motor through a coupling; the tensioning mechanism comprises a fixed ring, a slip ring, a driving cylinder, a connecting rod assembly and a tensioning rod, wherein the fixed ring is fixedly sleeved at one end of the rotating shaft, the slip ring is sleeved at the other end of the rotating shaft, a plurality of connecting rod assemblies are evenly distributed between the fixed ring and the slip ring, and each connecting rod assembly is connected to a tensioning rod parallel to the rotating shaft; the connecting rod assembly comprises a first support rod, a first slider, a second support rod and a second slider, wherein one end of the first support rod is hingedly connected to the fixed ring, and the other end is hingedly connected to the first slider, the first slider is slidably connected to the tensioning rod, one end of the second support rod is hingedly connected to the slip ring, and the other end is hingedly connected to the second slider, the second slider is slidably connected to the tensioning rod, and the middle part of the first support rod is hingedly connected to the middle part of the second support rod; the driving cylinder is arranged on the rotating shaft through a fixed seat, and the driving slip ring slides along the axis of the rotating shaft.

[0007] The tension rod is a straight rod structure as a whole, and its cross section is arc-shaped.

[0008] The fixed ring and the sliding ring are both provided with hinge ears distributed along the circumference.

[0009] The fixing seat is composed of a base and a seat plate. The base fixing sleeve is arranged on the rotating shaft. The seat plate is fixedly connected to the side of the base and is perpendicular to the rotating shaft. The cylinder body of the driving cylinder is installed on the seat plate. The output shaft of the driving cylinder passes through the seat plate and is connected to the slip ring.

[0010] The slip ring is fixedly connected with a driving plate and is connected with the output shaft of the driving cylinder through the driving plate.

[0011] One end of the tension rod is provided with a first axial slide rail, and the other end is provided with a second axial slide rail. The first slider is slidably connected to the first axial slide rail, and the second slider is slidably connected to the second axial slide rail.

[0012] The beneficial effects of the utility model: the utility model realizes the docking positioning of thin-walled air ducts during welding through the tensioning mechanism designed on the rotating shaft. The docking of the air ducts is convenient and quick, and the coaxiality after docking is good. The rotating shaft can realize the welding method in which the workpiece rotates and the welding gun does not move, which can greatly improve the welding quality and welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the tensioning device of the utility model.

[0014] Figure 2 It is a cross-sectional view of the tensioning mechanism.

[0015] Figure 3 for Figure 2 Enlarged view of part A.

[0016] In the figure: 8, stand, 71, eighth motor, 72, rotating shaft, 73, fixed ring, 74, slip ring, 75, driving cylinder, 77, tensioning rod, 761, first support rod, 762, second support rod, 78, first slider, 79, second slider. DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be described clearly and completely below in conjunction with the drawings of the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.

[0018] like Figure 1-3As shown, the utility model proposes a tensioning device for high-sealed air duct welding, including a stand 8, an eighth motor 71 arranged on the stand 8, a rotating shaft 72 arranged on one side of the stand 8 and a tensioning mechanism arranged on the rotating shaft 72, wherein the rotating shaft 72 is connected to the eighth motor 71 through a coupling; the tensioning mechanism includes a fixing ring 73, a slip ring 74, a driving cylinder 75, a connecting rod assembly and a tensioning rod 77, wherein the fixing ring 73 is fixedly sleeved at one end of the rotating shaft 72, the slip ring 74 is sleeved at the other end of the rotating shaft 72, and a plurality of connecting rod assemblies are evenly distributed between the fixing ring 73 and the slip ring 74, and each connecting rod assembly is provided with a plurality of connecting rod assemblies. A tensioning rod 77 is installed on each component; the connecting rod assembly consists of a first support rod 761 and a second support rod 762, one end of the first support rod 761 is hingedly connected to the fixing ring 73, and the other end is hingedly connected to the first slider 78, the first slider 78 is slidably connected to the tensioning rod 77, one end of the second support rod 762 is hingedly connected to the slip ring 74, and the other end is hingedly connected to the second slider 79, the second slider 79 is slidably connected to the tensioning rod 77, the middle part of the first support rod 761 is hingedly connected to the middle part of the second support rod 762; the driving cylinder 75 is arranged on the rotating shaft 72 through a fixed seat, and the driving slip ring 74 slides along the axis of the rotating shaft 72.

[0019] The tension rod is provided with a first axial slide rail at one end and a second axial slide rail at the other end. The first slider 78 is slidably connected to the first axial slide rail, and the second slider 79 is slidably connected to the second axial slide rail. Specifically, the first axial slide rail and the second axial slide rail are both arranged on the inner side of the tension rod; in one embodiment of the utility model, an axial slide groove is respectively provided at both ends of the inner side of the tension rod, and the first axial slide rail and the second axial slide rail are respectively fixed in the corresponding axial slide grooves, the first slider 78 is sleeved on the first axial slide rail, and the second slider 79 is sleeved on the second axial slide rail to prevent the first slider 78 and the second slider 79 from falling off during movement.

[0020] When the utility model is in use, the tensioning mechanism should first be kept in the initial state, that is, the distance between the fixed ring 73 and the slip ring 74 is the largest, and then the two air ducts to be welded are sleeved on the tensioning rod 77 of the tensioning mechanism, and the splicing parts of the two air ducts are manually aligned, and the driving cylinder 75 is started; under the action of the connecting rod assembly, the tensioning rod 77 expands outward, gradually tightening the two air ducts into a cylinder spliced ​​together, because the radial movement of the two ends of the tensioning rod 77 is synchronized during tensioning, the splicing parts aligned in advance are not prone to movement and dislocation; when welding, the eighth motor 71 can be started to rotate the rotating shaft, drive the air duct on the tensioning mechanism to rotate, and realize welding on the circumference of the air duct; when unloading, the driving cylinder 75 drives the slip ring 74 to reset, and under the action of the connecting rod assembly, the tensioning rod 77 contracts inward, and the welded air duct can be removed from the tensioning mechanism.

[0021] The tension rod 77 is a straight rod structure as a whole, and its cross section is arc-shaped.

[0022] The fixed ring 73 and the sliding ring 74 are both provided with hinge ears distributed along the circumference.

[0023] The fixing seat is composed of a base and a seat plate. The base is fixedly sleeved on the rotating shaft 72. The seat plate is fixedly connected to the side of the base and is perpendicular to the rotating shaft 72. The cylinder body of the driving cylinder 75 is installed on the seat plate. The output shaft of the driving cylinder 75 passes through the seat plate and is connected to the slip ring 74.

[0024] The slip ring 74 is fixedly connected to a driving plate, and is connected to the output shaft of the driving cylinder 75 via the driving plate.

[0025] The parts not described in detail in this utility model are prior art.

Claims

1. A tensioning device for welding a highly sealed air duct, comprising a stand (8), an eighth motor (71) arranged on the stand (8), a rotating shaft (72) arranged on one side of the stand (8), and a tensioning mechanism arranged on the rotating shaft (72), wherein: The rotating shaft (72) is connected to the eighth motor (71) via a coupling; the tensioning mechanism comprises a fixed ring (73), a slip ring (74), a driving cylinder (75), a connecting rod assembly and a tensioning rod (77); the fixed ring (73) is fixedly sleeved on one end of the rotating shaft (72); the slip ring (74) is sleeved on the other end of the rotating shaft (72); a plurality of connecting rod assemblies are evenly distributed between the fixed ring (73) and the slip ring (74); each connecting rod assembly is connected to a tensioning rod (77) parallel to the rotating shaft (72); the connecting rod assembly comprises a first support rod (761), a first slider (78), a second support rod (762) ) and a second slider (79), one end of the first support rod (761) is hingedly connected to the fixing ring (73), and the other end is hingedly connected to the first slider (78), the first slider (78) is slidably connected to the tensioning rod (77), one end of the second support rod (762) is hingedly connected to the slip ring (74), and the other end is hingedly connected to the second slider (79), the second slider (79) is slidably connected to the tensioning rod (77), the middle part of the first support rod (761) is hingedly connected to the middle part of the second support rod (762); the driving cylinder (75) is arranged on the rotating shaft (72) through a fixing seat, and the driving slip ring (74) slides along the axis of the rotating shaft (72).

2. The tensioning device for high-sealed air duct welding according to claim 1 is characterized in that: The tension rod (77) is a straight rod structure as a whole, and its cross section is arc-shaped.

3. The tensioning device for high-sealed air duct welding according to claim 1 is characterized in that: The fixed ring (73) and the sliding ring (74) are both provided with hinge ears distributed along the circumference.

4. The tensioning device for high-sealed air duct welding according to claim 1 is characterized in that: The fixing seat is composed of a base and a seat plate. The base is fixedly sleeved on the rotating shaft (72). The seat plate is fixedly connected to the side of the base and is perpendicular to the rotating shaft (72). The cylinder body of the driving cylinder (75) is installed on the seat plate. The output shaft of the driving cylinder (75) passes through the seat plate and is connected to the slip ring (74).

5. The tensioning device for welding a highly sealed air duct according to claim 1 is characterized in that: The slip ring (74) is fixedly connected to a drive plate and is connected to an output shaft of a drive cylinder (75) via the drive plate.

6. The tensioning device for welding a highly sealed air duct according to claim 1, characterized in that: The tension rod (77) is provided with a first axial slide rail at one end and a second axial slide rail at the other end; the first slide block (78) is slidably connected to the first axial slide rail, and the second slide block (79) is slidably connected to the second axial slide rail.

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