A central air conditioning collecting pipe positioning welding auxiliary tool

Abstract

The present invention provides a central air-conditioning gas collecting pipe positioning welding auxiliary tooling, which belongs to the technical field of air-conditioning gas collecting pipe welding, and includes a base plate, a first drive assembly, a clamping and positioning assembly, a leveling assembly, and a welding gun. Two groups of bracket plates are fixedly provided on the upper portion of the base plate, and the two groups of bracket plates are relatively distributed. The clamping and positioning assemblies are provided in two groups, and the two groups of clamping and positioning assemblies are respectively installed on the two groups of bracket plates, and are used to clamp and position two gas collecting pipes to be welded. Compared with the existing technology, the embodiment of the present invention can pre-level the welding surfaces of the two gas collecting pipes when welding the two gas collecting pipes into one, thereby ensuring that the two gas collecting pipes can be accurately docked, while ensuring the coaxiality of the two gas collecting pipes after welding, thereby improving the welding quality.

Description

Technical Field

[0001] The invention belongs to the technical field of air-conditioning collecting pipe welding, in particular to an auxiliary tool for positioning welding of a central air-conditioning collecting pipe. Background Art

[0002] The central air-conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. Currently, in order to meet the long-distance transportation needs of the cold and heat sources, it is sometimes necessary to connect multiple air collecting pipes in sequence.

[0003] In the prior art, welding is usually used to connect multiple gas collecting pipes in sequence. When welding two gas collecting pipes into one, it is necessary to use a corresponding positioning mechanism to position the two gas collecting pipes to ensure that the welding surfaces of the two gas collecting pipes are butted against each other. However, due to factors such as processing technology and processing errors, the welding surface of the end of a single gas collecting pipe is not a standard plane structure. The welding surface of some gas collecting pipe ends is prone to bulges and tilts. After positioning, the gas collecting pipes with bulges and tilts will not be able to be smoothly and accurately butted against each other, thereby affecting the subsequent welding effect and welding quality. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide an auxiliary tool for positioning and welding of a central air-conditioning collecting pipe.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A central air conditioning collecting pipe positioning welding auxiliary tooling, comprising a base plate, a first drive assembly, a clamping and positioning assembly, a leveling assembly and a welding gun.

[0007] Two sets of bracket plates are fixedly arranged on the upper portion of the bottom plate, and the two sets of bracket plates are relatively distributed.

[0008] There are two groups of clamping and positioning components, which are respectively installed on two groups of support plates to clamp and position two gas collecting pipes to be welded.

[0009] The first driving assembly is provided with two groups, and the two groups of the first driving assembly are respectively arranged on the side walls of the two groups of the bracket plates, and are used to drive the two groups of the clamping and positioning assemblies to rotate.

[0010] The welding gun and the leveling assembly are mounted on the upper portion of the base plate and located between the two sets of support plates.

[0011] When the two sets of the clamping and positioning assemblies rotate, the leveling assembly is used to level the welding surfaces of the two gas collecting pipes. After the welding surfaces of the two gas collecting pipes are leveled, the welding gun is used to perform circumferential welding on the two gas collecting pipes.

[0012] As a further improvement of the present invention: the two groups of the first driving components have the same structure, and both include a first motor, a driving gear, a transmission gear and a rotating drum.

[0013] The rotating drum is rotatably mounted on the side wall of the bracket plate, the transmission gear is fixedly arranged on the outside of the rotating drum, the first motor is fixedly arranged on the side wall of the bracket plate, the driving gear is mounted on the output end of the first motor and meshes with the transmission gear,

[0014] The two sets of clamping and positioning components have the same structure, both including a positioning sleeve and a locking bolt.

[0015] The positioning sleeve passes through the bracket plate and the rotating drum horizontally, and the locking bolt is installed on the side wall of the positioning sleeve.

[0016] As a further improvement of the present invention: a U-shaped support seat is provided on the upper portion of the bottom plate, and the U-shaped support seat is located between the two groups of the bracket plates.

[0017] The leveling assembly includes a second motor and a leveling rod,

[0018] The second motor is fixedly mounted on the side wall of the U-shaped support seat, the leveling rod is mounted on the output end of the second motor and is controlled to rotate by the second motor, and a polished annular surface is provided on the circumferential side wall of the leveling rod.

[0019] As a further improvement of the present invention: the U-shaped support seat is slidably mounted on the upper portion of the bottom plate, and the sliding direction of the U-shaped support seat is perpendicular to the length direction of the two gas collecting pipes.

[0020] A second driving assembly is also provided on the side wall of the bracket plate. When the second motor drives the leveling rod to rotate to level the welding surfaces of the two gas collecting pipes, the second driving assembly is used to drive the U-shaped support seat to slide along the upper part of the bottom plate.

[0021] A guide rail is fixedly provided on the upper portion of the bottom plate, and a guide rail groove adapted to the guide rail is provided at the bottom of the U-shaped support seat.

[0022] As a further improvement of the present invention: the second driving assembly includes a driving rack and a fixed rod,

[0023] The driving rack is arranged below the transmission gear and meshes with the transmission gear. One end of the fixing rod is fixedly connected to the U-shaped support seat, and the other end is fixedly connected to the driving rack for providing support for the driving rack.

[0024] As a further improvement of the present invention: a ring seat is fixedly provided on the outer circumferential wall of the positioning sleeve, and the ring seat is connected to the rotating drum via a first elastic member, and the first elastic member is used to provide elastic support for the positioning sleeve.

[0025] A guide strip is fixedly provided on the outer circumferential wall of the positioning sleeve. The guide strip is distributed along the length direction of the positioning sleeve. A guide groove adapted to the guide strip is opened on the inner wall of the rotating cylinder.

[0026] As a further improvement of the present invention: the welding gun is fixedly arranged on the side wall of the U-shaped support seat and is distributed opposite to the leveling rod.

[0027] As a further improvement of the present invention: a grinding surface is provided at one end of the leveling rod away from the second motor, and an elastic support component is also provided on the upper portion of the base plate, and the elastic support component is used to provide elastic support for the U-shaped support seat.

[0028] As a further improvement of the present invention: the elastic support assembly includes a support plate and a second elastic member,

[0029] The support plate is fixedly mounted on the upper portion of the base plate. One end of the second elastic member is connected to the support plate, and the other end is connected to the U-shaped support seat, for providing elastic support to the U-shaped support seat.

[0030] As a further improvement of the present invention, the grinding annular surface and the grinding plane are transitioned through a conical grinding surface.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] In an embodiment of the present invention, when it is necessary to weld two gas collecting pipes into one, two groups of clamping and positioning assemblies can be used to clamp and position the two gas collecting pipes respectively, and then the first driving assembly is used to drive the two groups of clamping and positioning assemblies to rotate, thereby driving the two gas collecting pipes to rotate. When the two gas collecting pipes rotate, the welding surfaces of the two gas collecting pipes are leveled by the leveling assembly, so that the welding surfaces of the two gas collecting pipes can be accurately connected and the coaxiality is guaranteed. After the leveling assembly has leveled the welding surfaces of the two gas collecting pipes, as the two gas collecting pipes continue to rotate, the welding gun rotates circumferentially relative to the two gas collecting pipes, thereby welding the two gas collecting pipes into one. Compared with the existing technology, when welding the two gas collecting pipes into one, the welding surfaces of the two gas collecting pipes can be leveled in advance, thereby ensuring that the two gas collecting pipes can be accurately connected, while ensuring the coaxiality of the two gas collecting pipes after welding, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of a central air conditioning collector positioning welding auxiliary tooling Figure 1 ;

[0034] Figure 2 A schematic diagram of the structure of a central air conditioning collector positioning welding auxiliary tooling Figure 2 ;

[0035] Figure 3 This is a structural schematic diagram of the first drive assembly in a central air-conditioning collecting pipe positioning welding auxiliary tooling;

[0036] Figure 4 This is a structural diagram of a leveling rod in a central air-conditioning collecting pipe positioning welding auxiliary tooling;

[0037] Figure 5 for Figure 1 A magnified schematic diagram of area A in the middle;

[0038] Figure 6 for Figure 2 A magnified schematic diagram of area B in the middle;

[0039] Figure 7 for Figure 3 Enlarged schematic diagram of area C in the middle;

[0040] In the figure: 10-base plate, 101-bracket plate, 102-guide rail, 103-U-shaped support seat, 20-first drive assembly, 201-first motor, 202-drive gear, 203-transmission gear, 204-rotating drum, 30-clamping and positioning assembly, 301-positioning sleeve, 302-locking bolt, 303-ring seat, 304-first elastic member, 305-guide bar, 40-leveling assembly, 401-second motor, 402-leveling rod, 4021-grinding annular surface, 4022-conical grinding surface, 4023-grinding plane, 50-second drive assembly, 501-drive rack, 502-fixing rod, 60-welding gun, 70-elastic support assembly, 701-support plate, 702-second elastic member. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0042] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] See also Figure 1 as well as Figure 2The present embodiment provides a central air-conditioning collecting pipe positioning welding auxiliary tooling, comprising a base plate 10, a first drive assembly 20, a clamping and positioning assembly 30, a leveling assembly 40 and a welding gun 60. Two groups of bracket plates 101 are fixedly provided on the upper part of the base plate 10. The two groups of bracket plates 101 are relatively distributed. The clamping and positioning assemblies 30 are provided with two groups, and the two groups of clamping and positioning assemblies 30 are respectively installed on the two groups of bracket plates 101 for clamping and positioning the two collecting pipes to be welded. The first drive assembly 20 is provided with a There are two groups, and the two groups of the first driving components 20 are respectively arranged on the side walls of the two groups of the support plates 101, and are used to drive the two groups of the clamping and positioning components 30 to rotate. The welding gun 60 and the leveling component 40 are installed on the upper part of the base plate 10 and are located between the two groups of the support plates 101. When the two groups of the clamping and positioning components 30 rotate, the leveling component 40 is used to level the welding surfaces of the two gas collecting pipes. After the welding surfaces of the two gas collecting pipes are leveled, the welding gun 60 is used to perform circumferential welding on the two gas collecting pipes.

[0046] When it is necessary to weld two gas collecting pipes into one, two sets of clamping and positioning assemblies 30 can be used to clamp and position the two gas collecting pipes respectively, and then the first driving assembly 20 can be used to drive the two sets of clamping and positioning assemblies 30 to rotate, thereby driving the two gas collecting pipes to rotate. When the two gas collecting pipes rotate, the leveling assembly 40 is used to level the welding surfaces of the two gas collecting pipes, so that the welding surfaces of the two gas collecting pipes can be accurately connected and the coaxiality can be ensured. After the leveling assembly 40 has leveled the welding surfaces of the two gas collecting pipes, as the two gas collecting pipes continue to rotate, the welding gun 60 rotates circumferentially relative to the two gas collecting pipes, thereby welding the two gas collecting pipes into one.

[0047] See also Figure 1 、 Figure 3 as well as Figure 7 In one embodiment, the two groups of the first driving components 20 have the same structure, both including a first motor 201, a driving gear 202, a transmission gear 203 and a rotating drum 204, the rotating drum 204 is rotatably mounted on the side wall of the bracket plate 101, the transmission gear 203 is fixedly arranged on the outside of the rotating drum 204, the first motor 201 is fixedly arranged on the side wall of the bracket plate 101, the driving gear 202 is installed at the output end of the first motor 201 and meshes with the transmission gear 203, the two groups of the clamping and positioning components 30 have the same structure, both including a positioning sleeve 301 and a locking bolt 302, the positioning sleeve 301 horizontally passes through the bracket plate 101 and the rotating drum 204, and the locking bolt 302 is installed on the side wall of the positioning sleeve 301.

[0048] When the two gas collecting pipes need to be welded together, the two gas collecting pipes can be passed through the interior of the positioning sleeves 301 corresponding to the two sets of clamping and positioning assemblies 30, so that the welding surfaces of the two gas collecting pipes are in contact with the leveling assembly 40, and then the locking bolts 302 on the outside of the two sets of positioning sleeves 301 are screwed into the corresponding positioning sleeves 301, and the locking bolts 302 are used to fix the gas collecting pipe top support inside the positioning sleeves 301, thereby achieving the clamping and positioning of the gas collecting pipes; when the two gas collecting pipes are clamped and positioned, the two sets of first motors 201 are started, and the two sets of first motors 201 drive the two sets of drive gears 202 to rotate synchronously, and the two sets of drive gears 202 are driven to rotate synchronously. The meshing action of the moving gear 202 and the two sets of transmission gears 203 drives the two sets of rotating drums 204 to rotate. When the two sets of rotating drums 204 rotate, they drive the two sets of positioning sleeves 301 to rotate, and then drive the two gas collecting pipes to rotate synchronously. When the two gas collecting pipes rotate synchronously, the leveling component 40 levels the welding surfaces of the two gas collecting pipes so that the welding surfaces of the two gas collecting pipes can be accurately connected. When the welding surfaces of the two gas collecting pipes are leveled, as the two sets of first motors 201 continue to drive the two sets of driving gears 202 to rotate, the two gas collecting pipes are driven to continue to rotate. At this time, the welding gun 60 rotates circumferentially compared to the two gas collecting pipes, and then performs circumferential welding on the two gas collecting pipes.

[0049] See also Figure 1 、 Figure 4 as well as Figure 5 In one embodiment, a U-shaped support seat 103 is provided on the upper part of the base plate 10, and the U-shaped support seat 103 is located between the two groups of the bracket plates 101. The leveling assembly 40 includes a second motor 401 and a leveling rod 402. The second motor 401 is fixedly mounted on the side wall of the U-shaped support seat 103. The leveling rod 402 is mounted on the output end of the second motor 401 and is controlled to rotate by the second motor 401. A polishing annular surface 4021 is provided on the circumferential side wall of the leveling rod 402.

[0050] After the two gas collecting pipes are passed through the two sets of positioning sleeves 301 respectively, the positions of the two gas collecting pipes can be adjusted so that the welding surfaces of the two gas collecting pipes contact the polished surface 4021 on the circumferential side wall of the leveling rod 402, and then the two gas collecting pipe top supports are fixed inside the corresponding positioning sleeves 301 using the locking bolts 302, and then the first motor 201 and the second motor 401 are started. The first motor 201 drives the rotating drum 204 to rotate through the meshing action of the driving gear 202 and the transmission gear 203, and then drives the positioning sleeve 301 and the gas collecting pipe to rotate. The second motor 401 drives the leveling rod 402 to rotate. When the leveling rod 402 rotates, it drives the polished annular surface 4021 to rotate, and the welding surfaces of the two gas collecting pipes are smoothed through the friction between the polished annular surface 4021 and the welding surfaces of the two gas collecting pipes.

[0051] See also Figure 1 In one embodiment, the U-shaped support seat 103 is slidably mounted on the upper part of the base plate 10, and the sliding direction of the U-shaped support seat 103 is perpendicular to the length direction of the two gas collecting pipes. A second driving assembly 50 is also provided on the side wall of the bracket plate 101. When the second motor 401 drives the leveling rod 402 to rotate to level the welding surfaces of the two gas collecting pipes, the second driving assembly 50 is used to drive the U-shaped support seat 103 to slide along the upper part of the base plate 10, thereby driving the second motor 401 and the leveling rod 402 to move. When the leveling rod 402 moves, it is removed from between the two gas collecting pipes, so that the welding gun 60 can subsequently smoothly perform circumferential welding on the two gas collecting pipes.

[0052] See also Figure 1 In one embodiment, a guide rail 102 is fixedly provided on the upper portion of the base plate 10 , and a guide rail groove (not shown in the figure) adapted to the guide rail 102 is opened at the bottom of the U-shaped support seat 103 .

[0053] When the second motor 401 drives the leveling rod 402 to rotate to level the welding surfaces of the two gas collecting pipes, the second drive assembly 50 drives the U-shaped support seat 103 to slide along the guide rail 102, thereby driving the second motor 401 and the leveling rod 402 to move, so that the leveling rod 402 is removed from between the two gas collecting pipes.

[0054] See also Figure 1 In one embodiment, the second drive assembly 50 includes a drive rack 501 and a fixed rod 502. The drive rack 501 is arranged below the transmission gear 203 and engages with the transmission gear 203. One end of the fixed rod 502 is fixedly connected to the U-shaped support seat 103, and the other end is fixedly connected to the drive rack 501, for providing support for the drive rack 501.

[0055] When the first motor 201 drives the driving gear 202 to rotate and then drives the positioning sleeve 301 and the gas collecting pipe to rotate through the meshing action of the driving gear 202 and the transmission gear 203, the driving rack 501 can also be driven to move through the meshing action of the transmission gear 203 and the driving rack 501. When the driving rack 501 moves, it drives the U-shaped support seat 103 to slide along the guide rail 102 through the fixed rod 502, and then drives the second motor 401 and the leveling rod 402 to move, so that the polished annular surface 4021 on the circumferential side wall of the leveling rod 402 is polished and leveled for the welding surface of the two gas collecting pipes. After that, the leveling rod 402 can be removed from between the two gas collecting pipes, so that the welding gun 60 can subsequently smoothly perform circumferential welding on the two gas collecting pipes.

[0056] See also Figure 7In one embodiment, a ring seat 303 is fixedly provided on the outer circumferential wall of the positioning sleeve 301, and the ring seat 303 is connected to the rotating drum 204 via a first elastic member 304. The first elastic member 304 is used to provide elastic support for the positioning sleeve 301. A guide strip 305 is also fixedly provided on the outer circumferential wall of the positioning sleeve 301. The guide strip 305 is distributed along the length direction of the positioning sleeve 301, and a guide groove (not shown in the figure) adapted to the guide strip 305 is opened on the inner wall of the rotating drum 204.

[0057] After the locking bolt 302 fixes the gas collecting pipe support inside the positioning sleeve 301, the first elastic member 304 supports the positioning sleeve 301, so that the gas collecting pipe can obtain an elastic supporting force toward the leveling rod 402, thereby making the welding surface of the gas collecting pipe closely contact with the polished annular surface 4021 on the circumferential side wall of the leveling rod 402. As the polished annular surface 4021 continuously polishes the welding surface of the gas collecting pipe, the gas collecting pipe gradually moves toward the leveling rod 402 under the support of the first elastic member 304. When the welding surface of the gas collecting pipe is leveled, the leveling rod 402 is driven to move by the meshing action of the transmission gear 203 and the driving rack 501. At this time, the two gas collecting pipes slide away from one end of the leveling rod 402 and They are pushed by their respective corresponding first elastic members 304 and then move toward each other. At this time, since the welding surfaces of the two gas collecting pipes have been leveled, the two gas collecting pipes moving toward each other can be accurately docked, and the coaxiality between the two gas collecting pipes after docking is guaranteed; the above-mentioned cooperation between the guide bar 305 and the guide groove can enable the first motor 201 to drive the driving gear 202 to rotate and then drive the rotating drum 204 to rotate through the transmission gear 203. The rotating drum 204 can use the guide groove and the guide bar 305 to smoothly drive the positioning sleeve 301 and the gas collecting pipe to rotate synchronously. When the first elastic member 304 pushes the positioning sleeve 301 and thus drives the two gas collecting pipes to move toward each other, the guide bar 305 slides adaptively compared to the guide groove.

[0058] See also Figure 2 as well as Figure 6 In one embodiment, the welding gun 60 is fixedly mounted on the side wall of the U-shaped support seat 103 and is distributed opposite to the leveling rod 402 .

[0059] When the transmission gear 203 engages with the drive rack 501 and drives the U-shaped support seat 103 and the leveling rod 402 to move, the U-shaped support seat 103 drives the welding gun 60 to move synchronously, and the welding gun 60 gradually approaches the two gas collecting pipes. When the leveling rod 402 is removed from between the two gas collecting pipes, the welding gun 60 moves to the front of the two gas collecting pipes. As the two gas collecting pipes are docked and continue to rotate, the welding gun 60 welds the two gas collecting pipes into one.

[0060] See also Figure 2、 Figure 4 as well as Figure 5 In one embodiment, a grinding surface 4023 is provided at one end of the leveling rod 402 away from the second motor 401, and an elastic support component 70 is also provided on the upper part of the base plate 10, and the elastic support component 70 is used to provide elastic support for the U-shaped support seat 103.

[0061] When the transmission gear 203 is engaged with the driving rack 501 and thus drives the U-shaped support seat 103 and the leveling rod 402 to move, the elastic support component 70 is compressed. When the leveling rod 402 is removed from between the two collecting pipes, the transmission gear 203 and the driving rack 501 are disengaged. At this time, the two collecting pipes move toward each other and dock with each other under the support of their respective first elastic members 304. At the same time, the elastic support effect of the elastic support component 70 on the U-shaped support seat 103 can make the leveling rod 402 away from the polishing surface 4023 at one end of the second motor 401. The weld formed after docking with the two gas collecting pipes is tightly attached. As the second motor 401 drives the leveling rod 402 to continue to rotate, and the first motor 201 drives the two gas collecting pipes to continue to rotate, the welding gun 60 rotates along the weld to weld the two gas collecting pipes into one. As the weld rotates, the welding slag protruding from the outside of the weld rotates to the position of the grinding plane 4023, the grinding plane 4023 can be used to grind the protruding welding slag by utilizing the rotation of the leveling rod 402, so that the outer surfaces of the two gas collecting pipes after welding remain flat, thereby improving the aesthetics of the two gas collecting pipes after welding.

[0062] See also Figure 2 In one embodiment, the elastic support assembly 70 includes a support plate 701 and a second elastic member 702, wherein the support plate 701 is fixedly mounted on the upper portion of the base plate 10, and one end of the second elastic member 702 is connected to the support plate 701, and the other end is connected to the U-shaped support seat 103, for providing elastic support to the U-shaped support seat 103.

[0063] When the transmission gear 203 engages with the driving rack 501 and drives the U-shaped support seat 103 and the leveling rod 402 to move, the second elastic member 702 is compressed. When the leveling rod 402 is removed from between the two gas collecting pipes, the transmission gear 203 disengages from the driving rack 501, and the two gas collecting pipes are pushed by their respective corresponding first elastic members 304 to move toward each other and dock with each other. At this time, under the support of the second elastic member 702, the leveling rod 402 can be moved away from the grinding plane 4023 at one end of the second motor 401 and contact the weld position formed between the two gas collecting pipes, thereby grinding away the raised welding slag that is subsequently rotated to the position of the grinding plane 4023.

[0064] See also Figure 4In one embodiment, the polishing annular surface 4021 and the polishing plane 4023 are transitioned through a conical polishing surface 4022 .

[0065] After the grinding annular surface 4021 has finished grinding and leveling the welding surfaces of the two gas collecting pipes, as the leveling rod 402 moves, the conical grinding surface 4022 acts on the outer edge of the welding surfaces of the two gas collecting pipes, and then grinds the outer edge of the welding surfaces of the two gas collecting pipes, so that the outer edge of the welding surfaces of the two gas collecting pipes forms a groove of a certain angle. In this way, a groove gap with a certain width can be formed after the two gas collecting pipes are subsequently connected. The welding gun 60 performs circumferential welding on the groove gap, thereby increasing the welding area between the two gas collecting pipes and improving the welding strength of the two gas collecting pipes.

[0066] In one embodiment, the first elastic member 304 and the second elastic member 702 can be springs or metal springs, which are not limited here.

[0067] The working principle of the present invention is as follows:

[0068] First, the two gas collecting pipes to be welded are passed through the interior of the positioning sleeve 301 respectively, so that the welding surfaces of the two gas collecting pipes are in contact with the polished annular surface 4021 on the circumferential side wall of the leveling rod 402, and then the positioning sleeve 301 is pushed to make the first elastic member 304 in a compressed state, and then the locking bolts 302 on the two sets of positioning sleeves 301 are screwed, and the two gas collecting pipes are fixed to the interior of the two sets of positioning sleeves 301 by using the locking bolts 302, and then the first motor 201 and the second motor 401 are started. The machine 201 drives the driving gear 202 to rotate, and the meshing action of the driving gear 202 and the transmission gear 203 drives the rotating drum 204, the positioning sleeve 301 and the gas collecting pipe to rotate. The second motor 401 drives the leveling rod 402 to rotate. When the leveling rod 402 rotates, the grinding annular surface 4021 on the circumferential side wall thereof grinds and flattens the welding surfaces of the two gas collecting pipes. While the transmission gear 203 rotates, the meshing action of the transmission gear 203 and the driving rack 501 drives the U-shaped support seat 103 to slide along the guide rail 102, thereby The second motor 401, the leveling rod 402 and the welding gun 60 are driven to move. When the welding surfaces of the two gas collecting pipes are polished and leveled, the leveling rod 402 is removed from between the two gas collecting pipes, and then the transmission gear 203 is disengaged from the driving rack 501. The two gas collecting pipes move toward each other and dock with each other under the push of their respective first elastic members 304. After the two gas collecting pipes are docked, as the two gas collecting pipes continue to rotate, the welding gun 60 performs circumferential welding on the weld formed by the docking of the two gas collecting pipes, and the welding gun 60 While the two gas collecting pipes are being welded, the welding slag protruding from the outside of the weld rotates to the position of the grinding plane 4023, and is then ground away by the rotating grinding plane 4023, so as to improve the aesthetics of the two gas collecting pipes after welding, thereby improving the welding quality; when the two gas collecting pipes are welded, turn off the first motor 201 and the second motor 401, and then reversely tighten the locking bolt 302 to release the supporting fixed state of the gas collecting pipe, and then remove the welded gas collecting pipe from the inside of the two sets of positioning sleeves 301.

[0069] In an embodiment of the present invention, when it is necessary to weld two gas collecting pipes into one, two groups of clamping and positioning assemblies 30 can be used to clamp and position the two gas collecting pipes respectively, and then the first driving assembly 20 is used to drive the two groups of clamping and positioning assemblies 30 to rotate, thereby driving the two gas collecting pipes to rotate. When the two gas collecting pipes rotate, the leveling assembly 40 is used to level the welding surfaces of the two gas collecting pipes, so that the welding surfaces of the two gas collecting pipes can be accurately connected and the coaxiality can be guaranteed. After the leveling assembly 40 has leveled the welding surfaces of the two gas collecting pipes, as the two gas collecting pipes continue to rotate, the welding gun 60 rotates circumferentially relative to the two gas collecting pipes, thereby welding the two gas collecting pipes into one. Compared with the existing technology, when welding the two gas collecting pipes into one, the welding surfaces of the two gas collecting pipes can be leveled in advance, thereby ensuring that the two gas collecting pipes can be accurately connected, while ensuring the coaxiality of the two gas collecting pipes after welding, thereby improving the welding quality.

[0070] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A central air conditioning collecting pipe positioning welding auxiliary tooling, characterized in that: It comprises a base plate (10), a first driving assembly (20), a clamping and positioning assembly (30), a leveling assembly (40), and a welding gun (60). Two groups of bracket plates (101) are fixedly arranged on the upper part of the bottom plate (10), and the two groups of bracket plates (101) are relatively distributed. The clamping and positioning components (30) are provided in two groups. The two groups of clamping and positioning components (30) are respectively mounted on the two groups of support plates (101) and are used to clamp and position the two gas collecting pipes to be welded. The first driving assembly (20) is provided with two groups, and the two groups of the first driving assembly (20) are respectively arranged on the side walls of the two groups of the bracket plates (101) and are used to drive the two groups of the clamping and positioning assemblies (30) to rotate. The welding gun (60) and the leveling assembly (40) are mounted on the upper portion of the base plate (10) and are located between the two sets of support plates (101). When the two sets of the clamping and positioning assemblies (30) rotate, the leveling assembly (40) is used to level the welding surfaces of the two gas collecting pipes. After the welding surfaces of the two gas collecting pipes are leveled, the welding gun (60) is used to perform circumferential welding on the two gas collecting pipes. The two groups of the first driving components (20) have the same structure, and both include a first motor (201), a driving gear (202), a transmission gear (203), and a rotating drum (204). The rotating drum (204) is rotatably mounted on the side wall of the bracket plate (101), the transmission gear (203) is fixedly arranged on the outside of the rotating drum (204), the first motor (201) is fixedly arranged on the side wall of the bracket plate (101), the driving gear (202) is mounted on the output end of the first motor (201) and meshes with the transmission gear (203), The two groups of clamping and positioning assemblies (30) have the same structure, and both include a positioning sleeve (301) and a locking bolt (302). The positioning sleeve (301) horizontally passes through the support plate (101) and the rotating drum (204), and the locking bolt (302) is installed on the side wall of the positioning sleeve (301). A U-shaped support seat (103) is provided on the upper portion of the bottom plate (10), and the U-shaped support seat (103) is located between the two sets of bracket plates (101). The leveling assembly (40) includes a second motor (401) and a leveling rod (402). The second motor (401) is fixedly mounted on the side wall of the U-shaped support seat (103), the leveling rod (402) is mounted on the output end of the second motor (401) and is controlled to rotate by the second motor (401), and a polished annular surface (4021) is provided on the circumferential side wall of the leveling rod (402). The U-shaped support seat (103) is slidably mounted on the upper portion of the bottom plate (10), and the sliding direction of the U-shaped support seat (103) is perpendicular to the length direction of the two gas collecting pipes. A second driving assembly (50) is further provided on the side wall of the support plate (101). When the second motor (401) drives the leveling rod (402) to rotate to level the welding surfaces of the two gas collecting pipes, the second driving assembly (50) is used to drive the U-shaped support seat (103) to slide along the upper part of the bottom plate (10). A guide rail (102) is fixedly provided on the upper portion of the base plate (10), and a guide rail groove adapted to the guide rail (102) is provided at the bottom of the U-shaped support seat (103). The second driving assembly (50) comprises a driving rack (501) and a fixing rod (502). The driving rack (501) is arranged below the transmission gear (203) and meshes with the transmission gear (203). One end of the fixing rod (502) is fixedly connected to the U-shaped support seat (103), and the other end is fixedly connected to the driving rack (501), and is used to provide support for the driving rack (501). A grinding surface (4023) is provided at one end of the leveling rod (402) away from the second motor (401). The polishing annular surface (4021) and the polishing plane (4023) transition through a conical polishing surface (4022).

2. The central air conditioning collecting pipe positioning welding auxiliary tool according to claim 1 is characterized in that: A ring seat (303) is fixedly provided on the outer circumferential wall of the positioning sleeve (301), and the ring seat (303) is connected to the rotating drum (204) via a first elastic member (304). The first elastic member (304) is used to provide elastic support for the positioning sleeve (301). A guide strip (305) is fixedly provided on the circumferential outer wall of the positioning sleeve (301), and the guide strip (305) is distributed along the length direction of the positioning sleeve (301). A guide groove adapted to the guide strip (305) is provided on the inner wall of the rotating drum (204).

3. The central air conditioning collecting pipe positioning welding auxiliary tool according to claim 1, characterized in that: The welding gun (60) is fixedly arranged on the side wall of the U-shaped support seat (103) and is distributed opposite to the leveling rod (402).

4. The central air conditioning collecting pipe positioning welding auxiliary tool according to claim 1, characterized in that: An elastic support assembly (70) is also provided on the upper portion of the bottom plate (10), and the elastic support assembly (70) is used to provide elastic support for the U-shaped support seat (103).

5. The central air conditioning collecting pipe positioning welding auxiliary tool according to claim 4, characterized in that: The elastic support assembly (70) comprises a support plate (701) and a second elastic member (702). The support plate (701) is fixedly mounted on the upper portion of the base plate (10); one end of the second elastic member (702) is connected to the support plate (701), and the other end is connected to the U-shaped support seat (103), for providing elastic support to the U-shaped support seat (103).

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