CN111872605A - Welding method of axial flow fan - Google Patents
Welding method of axial flow fan Download PDFInfo
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- CN111872605A CN111872605A CN202010731267.3A CN202010731267A CN111872605A CN 111872605 A CN111872605 A CN 111872605A CN 202010731267 A CN202010731267 A CN 202010731267A CN 111872605 A CN111872605 A CN 111872605A
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- air duct
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- heat
- side wall
- transverse plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0252—Steering means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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Abstract
The invention belongs to the technical field of manufacturing of ventilation equipment, and relates to a welding method of an axial flow fan, which is used for welding a wind cylinder and a mounting frame of the fan, wherein a heat conducting piece is arranged on a part, corresponding to the welding position of the mounting frame and the inner side wall of the wind cylinder, of the outer side wall of the wind cylinder, and a part, corresponding to the welding position of the mounting frame and the inner side wall of the wind cylinder, of the outer side wall of the wind cylinder, in the welding process, the heat conducting piece is arranged on the outer side wall, corresponding to the welding position of the mounting frame and the inner side wall of the wind cylinder, in the welding process, on one hand, the effect of quick heat conduction can be achieved during welding, so that dialysis cannot be caused during welding, the surface of the wind cylinder is kept smooth and flat, in addition, because the heat dissipation effect is improved, the situations that the welding surface, the heat conducting piece is arranged on the outer side surface of the air duct, so that the air duct and the mounting frame can be connected tightly, and the welding effect is improved.
Description
Technical Field
The invention belongs to the technical field of manufacturing of ventilation equipment, and particularly relates to a welding method of an axial flow fan.
Background
Axial-flow fan includes the dryer, the rotatory motor of flabellum and drive flabellum, be equipped with the mounting bracket that is used for installing the motor in the dryer, it is including the diaphragm of horizontal setting and the riser of vertical setting, during the welding, the dryer cover is established in the outside of diaphragm and riser, the diaphragm both ends weld with the inside wall of dryer, riser one end welds with the inside wall of dryer, the other end welds with the middle part position of diaphragm, but because the dryer radiating efficiency is low when current welding process welding, gather heat easily and lead to the face of weld to warp, make dryer surface unevenness, need polish after the welding and level, the technology is loaded down with trivial details, consequently, it is very necessary to research and develop a welding method to solve the above-mentioned problem that arouses because the dryer heat dissipation is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a welding method capable of improving the heat dissipation effect of an air duct.
In order to solve the technical problems, the invention adopts the following technical scheme:
a welding method of an axial flow fan is used for welding an air duct and an installation frame of the fan, and a heat conducting piece is arranged at a position, corresponding to the welding position of the installation frame and the inner side wall of the air duct, of the outer side wall of the air duct during welding.
Compared with the prior art, the welding method provided by the invention has the advantages that the heat conducting piece is arranged on the outer side wall of the air duct corresponding to the welding position of the mounting frame and the inner side wall of the air duct, on one hand, the effect of quick heat conduction can be achieved during welding, so that the welding can not be dialyzed, the surface of the air duct is kept smooth and flat, and the heat dissipation effect is improved, so that the situations that the welding surface is deformed and the like due to heat accumulation at the moment of welding can be avoided, the unevenness of the surface of the air duct is avoided, the existing polishing and flattening process after welding is omitted, the production and the manufacture are more facilitated, on the other hand, the heat conducting piece is arranged on the outer side surface of the air duct due to relative movement between the air duct and the mounting frame.
Furthermore, the heat conducting piece is in butt joint with the outer side wall of the air duct in an operation and control mode through a welding device applying the welding method.
Further, the mounting bracket includes diaphragm and riser, and riser one side is equipped with the connection convex part, and the diaphragm middle part corresponds and connects the convex part and be equipped with the locating hole, and the heat-conducting part includes first heat-conducting part, second heat-conducting part and third heat-conducting part, and the welding step specifically as follows:
arranging a baffle plate for shielding the positioning hole at one side of the transverse plate, connecting the transverse plate and the vertical plate, inserting the connecting convex part into the positioning hole and abutting against the baffle plate, abutting the second heat conducting piece on the outer side wall of the air duct corresponding to the vertical plate, abutting the inner side wall of the air duct on the vertical plate, welding the contact position of the vertical plate and the air duct, namely the welding position of the vertical plate and the air duct, withdrawing the baffle plate, continuously pushing the air duct by the second heat conducting piece, displacing the vertical plate and the air duct to one side close to the transverse plate, penetrating the connecting convex part out of the positioning hole, reducing the gap between the inner side wall of the air duct and the transverse plate, abutting the first heat conducting piece and the third heat conducting piece on the outer side wall of the air duct corresponding to the two ends of the transverse plate, abutting against the inner side wall of the air duct at the two ends of the transverse plate and the air duct, namely welding the welding position of, the steps of welding the transverse plate and the vertical plate are as follows: after the transverse plate and the air duct are welded, the first heat-conducting piece, the second heat-conducting piece and the third heat-conducting piece are separated from the outer side wall of the air duct, and the transverse plate is connected with the vertical plate by welding one side face of the transverse plate relative to the vertical plate and the part of the connecting convex part penetrating out of the positioning hole.
Because the existing air duct is mainly made of thin plates, the air duct is easy to deform during high-temperature welding, and meanwhile, because the transverse plate and the vertical plate cannot be welded simultaneously, the welding sequence of the air duct can directly influence the welding effect, for example, when the two ends of the transverse plate are welded firstly, the welded air duct has larger deformation, so that a larger gap exists between the air duct and the vertical plate, and the gap is large enough to be incapable of being filled by welding, thereby reducing the qualification rate of products. Make dryer inside wall and diaphragm contact, consequently guaranteed to have sufficient area of contact between riser and the diaphragm to promote the welding effect, overcome among the prior art because weld the diaphragm earlier and lead to the problem of wind cylindric grow and unable welding riser.
Further, the mounting bracket is pi type structure, and its riser interval is equipped with two, and the second heat-conducting piece corresponds the riser and is equipped with two, and the welding step of two risers is the same, has accomplished the step of welding diaphragm and dryer again after the welding operation of above-mentioned two risers and dryer.
Furthermore, the air duct is a hollow cylinder, the heat conducting piece is tangent to the outer side wall of the air duct at the position corresponding to the welding position of the mounting frame and the air duct during welding, the heat gathering phenomenon at the welding position is most obvious during welding, and the heat radiating effect of the heat conducting piece at the tangent point is strongest, so that the arrangement mode can effectively improve the effect of the surface heat radiation of the air duct and ensure that the surface of the air duct is smooth and flat.
Furthermore, in order to further improve the heat conduction efficiency, the tangent point of the heat conduction piece and the outer side wall of the air duct corresponds to the middle line position of the thickness of the mounting frame at the welding position, and the arrangement can enable the tangent point to be aligned to the middle part of the welding position as much as possible, so that the heat conduction capability is enhanced.
Further, the heat conduction piece is including being used for the heat conduction portion with the dryer lateral wall butt, the heat conduction portion comprises a plurality of monomer arrangements, every the monomer comprises the copper billet that is located its both sides and the tungsten steel that is located between the copper billet of both sides respectively, and when heat conduction piece and dryer lateral wall butt, the position of tangent point is located the tungsten steel. Because tungsten steel's heat resistance is good, can bear higher temperature during the welding, guarantee its structural stability, combine the copper billet that is located both sides to the surperficial heat of dryer during the adsorption welding prevents to gather heat, improves the radiating effect on dryer surface.
Furthermore, a positioning mechanism for fixing the mounting frame is arranged on the welding device applying the welding method, a positioning cylinder is arranged on the positioning mechanism, the mounting frame is firstly arranged on the positioning mechanism before the heat conducting piece is abutted to the outer side wall of the air duct, the air duct is sleeved outside the positioning mechanism, a piston rod of the positioning cylinder pushes the inner side wall of the air duct to one side opposite to the mounting frame, the mounting frame is abutted to the inner side wall of the air duct, the air duct before welding can move relative to the positioning mechanism and the mounting frame, a vertical plate can be abutted to the inner side wall of the air duct by pushing the piston rod of the positioning cylinder to one side opposite to the mounting frame, and therefore the air duct is supported at two opposite ends respectively, the freedom degree of the air duct in the horizontal direction is limited, and the deviation is prevented from occurring during the rotation.
Further, welding set includes workstation and roating seat, be equipped with the welding station on the workstation, the roating seat rotationally locates on the workstation, the relative both sides of roating seat are equipped with positioning mechanism, the roating seat is rotatory to shift dryer and the mounting bracket that will be located positioning mechanism to the welding station, during the operation, arrange the mounting bracket in on positioning mechanism earlier, the rotatory mounting bracket and the dryer that drive on the positioning mechanism of roating seat afterwards shift to the welding station, the butt is again on the lateral wall of dryer to the heat-conducting piece, this kind of method can weld mounting bracket and dryer on two positioning mechanism alternately, thereby improve production efficiency.
Furthermore, the heat conducting piece is controlled by the welding device to abut against the outer side wall of the air duct.
Drawings
FIG. 1 is a perspective view of a welding apparatus;
FIG. 2 is a top view of the welding apparatus;
fig. 3 is a schematic structural view of an air duct and a mounting bracket according to the first embodiment;
FIG. 4 is a schematic structural diagram of a heat conducting mechanism;
FIG. 5 is a schematic structural view of a heat-conducting member;
FIG. 6 is a schematic structural diagram of a positioning mechanism according to a first embodiment;
FIG. 7 is a schematic structural view of the cross plate positioning device;
FIG. 8 is a side view of the cross plate positioning device;
fig. 9 is a schematic structural view of a riser positioning device according to the first embodiment;
FIG. 10 is an enlarged view of the area A of FIG. 2 and a schematic view of the positioning mechanism;
fig. 11 is a schematic structural view of an air duct and a mounting bracket of the second embodiment;
FIG. 12 is a schematic structural view of a positioning mechanism according to a second embodiment;
fig. 13 is a schematic structural view of a riser positioning device of the second embodiment.
Fig. 14 to 16 are schematic views illustrating a welding process of the air duct and the mounting bracket according to the first embodiment;
fig. 17 is a schematic view of a welding process of the air duct and the mounting bracket according to the second embodiment.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The first embodiment is as follows:
referring to fig. 1 to 3, the embodiment provides a welding method of an axial flow fan, which is used for welding an air duct 1 and an installation frame 2 of the axial flow fan, wherein the air duct 1 is a hollow cylinder, the installation frame 2 is a T-shaped structure and includes a transverse plate 21 and a vertical plate 22, the transverse plate 21 is transversely disposed in the air duct 1, two opposite ends of the transverse plate 21 are respectively connected with an inner side wall of the air duct 1, the vertical plate 22 is longitudinally disposed in the air duct 1, one end of the vertical plate is connected with one side of the transverse plate 21, the opposite end is connected with the inner side wall of the air duct 1, and the air duct 1 is sleeved outside the transverse plate 21 and the vertical plate 22 during.
The welding device applying the welding method comprises a workbench 3, a welding gun 4, a positioning mechanism 5 and a heat conduction mechanism 6, wherein a welding station 31 is arranged on the workbench 3, the welding gun 4 is arranged on one side of the workbench 3, and the moving track of the welding gun 4 on the welding station 31 is controlled by a welding gun driving device 41.
Referring to fig. 1, 2 and 6, a rotary base 32 is arranged on the worktable 3, the rotary base 32 can rotate relative to the worktable 3, the positioning mechanisms 5 are respectively arranged on two opposite sides of the rotary base 32, the rotary base 32 selectively rotates, so that one of the positioning mechanisms 5 rotates to the welding station 31, the positioning mechanism 5 is used for fixing the mounting frame 2, the two positioning mechanisms 5 alternately rotate to the welding station 31 by arranging the rotary base 32, and the welding efficiency is improved, and a positioning cylinder 53 is arranged on the positioning mechanism 5.
Referring to fig. 1, 2, 4 and 5, the heat conducting mechanism 6 is provided at a side portion of the welding station 31, and includes a heat conducting member 61 and a heat conducting member driving cylinder 62 for driving the heat conducting member 61 to move toward the welding station 31. Specifically, the number of the heat conducting mechanisms 6 is three, and the heat conducting members 61 of the first heat conducting mechanism 601 and the third heat conducting mechanism 603 correspond to the outer side wall of the air duct 1 at the welding position of the air duct 1 at the two opposite ends of the transverse plate 21 respectively, and the heat conducting members 61 of the second heat conducting mechanism 602 correspond to the outer side wall of the air duct 1 at the welding position of the air duct 1 at the vertical plate 22 respectively. The heat conducting mechanism 6 is used for being arranged on the position, corresponding to the welding position of the mounting frame 2 and the inner side wall of the air duct 1, of the outer side wall of the air duct 1 during welding, heat is transferred away, the area of the heat conducting piece can be reduced by a targeted heat radiating mode, and material cost is effectively reduced.
Referring to fig. 1, 2, 4 and 5, as a specific arrangement, the heat conducting member 61 includes a base 611, a support 612 and a heat conducting portion 613 for abutting against the outer side wall of the air duct 1, the base 611 is connected to a piston rod of the heat conducting member driving cylinder 62, the heat conducting portion 613 is disposed on the base 611 through the support 612, an installation groove 6121 is disposed in the middle of the support 612, the heat conducting portion 613 is disposed in the installation groove 6121, the heat conducting portion 613 is connected to the base 611 through an elastic connector 614 in a floating manner, the elastic connector 614 is preferably a spring, so that the heat conducting portion 613 compresses the elastic connector 614 and moves toward the direction close to the base 611 relative to the support 612 when receiving an external force, such as a reaction force received when abutting against the surface of the air duct 1, and the arrangement enables the heat conducting portion 613 to adapt to the surface of the air duct 1, so that the two are in close contact with each.
Referring to fig. 5, as a specific embodiment, the heat conducting portion 613 is formed by vertically arranging a plurality of single bodies (6131,6132), each single body (6131,6132) is respectively formed by a copper block 6131 positioned on both sides of the single body and tungsten steel 6132 positioned between the copper blocks 6131 on both sides, each single body (6131,6132) is connected with the base 611 through an elastic connecting piece 614, because the tungsten steel 6132 has good heat resistance and can bear higher temperature during welding, the stability of the structure of the heat conducting portion 613 is ensured, and the heat on the surface of the air duct 1 during welding is absorbed by combining the copper blocks 6131 positioned on both sides, so that heat accumulation is prevented, and the heat dissipation effect on the surface of the air duct 1 is improved.
Referring to fig. 6 to 8, as a specific embodiment, the positioning mechanism 5 includes a transverse plate positioning device 51 and a vertical plate positioning device 52, the transverse plate positioning device 51 includes an installation base 511, a support frame 512 disposed in front of the installation base 511, a baffle 514 movably disposed in back of the support frame 512, clamping assemblies 513 disposed on opposite sides of the support frame 512, and a first clamping cylinder 5132 for driving the clamping assemblies 513 to clamp or release the transverse plate 21, the support frame 512 is provided with a slot 5121 with an open upper side, and the slot 5121 is used for placing the transverse plate 21.
Referring to fig. 6 to 8, each clamping assembly 513 includes a top plate 5131 mounted on the upper side of the mounting base 511, a connecting arm 5133, and a clamping arm 5134 disposed on the front side of the mounting base 511, wherein a first clamping cylinder 5132 is disposed on the lower side of the mounting base 511 and is rotatably connected to the mounting base 511, a piston rod of the first clamping cylinder 5132 faces the bottom of the mounting base 511, one end of the connecting arm 5133 is hinged to the piston rod of the first clamping cylinder 5132, the other end of the connecting arm 5133 is fixedly connected to the clamping arm 5134, a portion of the connecting arm 5133 between the piston rod of the first clamping cylinder 5132 and the clamping arm 5134 is hinged to a side portion of the supporting frame 512, and the clamping arm 5134 includes a.
Referring to fig. 6 and 9, the riser positioning device 52 includes two clamping plates 522 and a second clamping cylinder 521, which are disposed at the front side of the clamping arm 5134, wherein a guide column 523 is disposed between the upper portions of the two clamping plates 522, the clamping plates 522 are movable along the guide column 523, and the guide column 523 is used for supporting the riser 22 disposed between the two clamping plates 522.
Referring to fig. 1, 2 and 6, as an improved scheme, the positioning mechanism 5 further includes a padding seat 54, a through hole 541 is formed in the middle of the padding seat 54, the transverse plate positioning device 51 and the vertical plate positioning device 52 are respectively disposed in the through hole 541, the air duct 1 is supported on the upper side of the padding seat 54, and the padding seat 54 can be adjusted up and down relative to the workbench 3 to adapt to air ducts 1 with different heights and mounting frames 2 with different mounting heights.
Referring to the figures, as a specific embodiment, the transverse plate 21 is provided with a positioning hole 211 in the middle, one side of the vertical plate 22 is provided with a connecting convex part 221 connected with the positioning hole 211, and the welding method of the mounting bracket 2 and the air duct 1 includes the following steps:
s01, referring to fig. 7 and 10, the mounting frame 2 is placed on the positioning mechanism 5 and positioned by the positioning mechanism 5, specifically, the transverse plate 21 is placed between the top plate 5131 and the clamping member 5135 of the transverse plate positioning device 51 and supported on the slot 5121, as shown in fig. 7, the piston rod of the first clamping cylinder 5132 is retracted, the connecting arm 5133 is swung counterclockwise to drive the clamping arm 5134 to swing to a side close to the top plate 5131 so as to clamp the transverse plate 21 placed on the slot 5121 between the top plate 5131 and the clamping member 5135, and meanwhile, the clamping member 5135 can adjust its swing angle adaptively when clamping the transverse plate 21, so as to better adapt to the transverse plate 21 and clamp the transverse plate 21.
As shown in fig. 3, 8 and 9, the vertical plate 22 is placed between the two clamping plates 522, the baffle plate 514 abuts against the horizontal plate 21 and is located on one side opposite to the vertical plate 22 to cover the positioning hole 211, the connecting convex part 221 is inserted into the positioning hole 211 and is limited by the baffle plate 514, the limiting means that the connecting convex part 221 abuts against the baffle plate 514 and cannot penetrate through the positioning hole 211, and the second clamping cylinder 521 drives the two clamping plates 522 to approach each other along the guide column 523 to clamp the vertical plate 22, so that the current relative positions of the horizontal plate 21 and the vertical plate 22 are fixed.
s02, as shown in fig. 1, fig. 2 and fig. 10, establish dryer 1 cover in the outside of positioning mechanism 5, make dryer 1 arrange in on the bed of high seat 54, location cylinder 53 pushes up dryer 1 inside wall to one side relative mounting bracket 2, make riser 22 and dryer 1's inside wall looks butt, thereby prop dryer 1 at relative both ends respectively, with the degree of freedom of injecing on the dryer 1 horizontal direction, in order to appear the off normal when following roating seat 32 rotates, because the limiting displacement of baffle 514, riser 22 makes the dryer 1 inside wall that supports on riser 22 with the current position relation of diaphragm 21 can not be with diaphragm 21 looks butt.
s03, the rotary base rotates to transfer the wind cone 1 and the mounting rack 2 on the positioning mechanism 5 to the welding station 31, as shown in fig. 1, 2 and 10.
s04, as shown in fig. 14, the heat-conducting member driving cylinder 62 of the second heat-conducting mechanism 602 drives the heat-conducting member 61 to move toward the mounting frame 2, and pushes and abuts against the outer sidewall of the corresponding riser 22 of the air duct 1, so that the inner sidewall of the air duct 1 is tightly attached to the riser 22.
s05, as shown in fig. 14 ((r)), the welding torch 4 welds the position where the riser 22 contacts the air duct 1, that is, the welding position of the riser 22 to the air duct 1.
s06, as shown in fig. 14 and 15, the baffle 514 is withdrawn, the heat-conducting member of the second heat-conducting mechanism 602 drives the cylinder 62 to drive the heat-conducting member 61 to push the air duct 1, and under the pushing action of the second heat-conducting mechanism 602, the vertical plate 22 and the air duct 1 are displaced toward the side close to the horizontal plate 21, so that the connecting protrusion 221 penetrates through the positioning hole 211, extends out to the side of the horizontal plate 21 opposite to the vertical plate 22, and reduces the gap between the inner side wall of the air duct 1 and the horizontal plate 21.
s07, as shown in fig. 15, the heat conducting members of the first heat conducting mechanism 601 and the second heat conducting mechanism 602 drive the cylinder 62 to drive the heat conducting member 61 to move towards the mounting frame 2, and push and abut against the outer side walls of the two ends of the corresponding transverse plate 21 of the air duct 1, so that the inner side walls of the air duct 1 abut against the transverse plate 22.
s08, as shown in the second and third parts of fig. 15, the welding gun 4 welds the position where the horizontal plate 21 contacts the air duct 1, i.e. the welding position of the horizontal plate 21 and the air duct 1.
s09, as shown in fig. 15 and 16, the heat conducting members 61 of the first heat conducting mechanism 601, the second heat conducting mechanism 602, and the third heat conducting mechanism 603 are separated from the outer side wall of the air duct 1, and as shown in the fourth in fig. 16, the welding gun 4 welds a side surface of the horizontal plate 21 opposite to the vertical plate 22 and a portion of the connecting protrusion 221 penetrating through the positioning hole 211 to weld the horizontal plate 21 and the vertical plate 22.
s10, as shown in fig. 7 to 9, the piston rod of the first clamping cylinder 5132 is extended, the connecting arm 5133 is swung clockwise to drive the clamping arm 5134 to swing to the side away from the top plate 5131, so as to release the cross plate 21, and the second clamping cylinder 521 drives the two clamping plates 522 to move away from the release riser 22 along the guide column 523 relatively, so as to release the mounting bracket 2.
Compared with the prior art, the welding method provided by the embodiment arranges the heat conducting piece 61 on the outer side wall of the air duct 1 corresponding to the welding position of the inner side wall of the mounting frame 2 and the air duct 1, on one hand, the effect of quick heat conduction can be achieved during welding, so that welding can not be dialyzed, the surface of the air duct 1 is kept smooth and flat, and the heat dissipation effect is improved, so that the situations that the welding surface is deformed and the like due to instantaneous heat accumulation during welding can not occur, the unevenness of the surface of the air duct 1 is avoided, the polishing and flattening process after the existing welding is omitted, the production and the manufacturing are more facilitated, on the other hand, the air duct 1 and the mounting frame 2 can move relatively, the heat conducting piece 61 arranged on the outer side surface of the air duct 1 can ensure that the air duct and the mounting frame.
In addition, because the existing air duct 1 is mainly made of thin plates, the air duct is easy to deform during high-temperature welding, and meanwhile, because the transverse plate 21 and the vertical plate 22 cannot be welded at the same time, the welding sequence can directly influence the welding effect, for example, when the two ends of the transverse plate 21 are welded firstly, the welded air duct 1 deforms greatly, so that a large gap exists between the air duct 1 and the vertical plate 22, the gap is large enough to be filled by welding, and the qualification rate of products is reduced, based on the above problems, when the vertical plate 22 is welded, because the inner side wall of the air duct 1 abutted against the vertical plate 22 cannot be contacted with the transverse plate 21 due to the limit of the baffle 514, the welding of the vertical plate 22 and the air duct 1 by the transverse plate 21 cannot be influenced, after the vertical plate 22 is welded, the baffle 514 is withdrawn, the heat conducting piece 61 of the second heat conducting mechanism 602 continues to push against the air duct 1, so that the vertical plate 22 welded on the air duct 1 and the air, the connecting convex part 221 is driven to penetrate through the positioning hole 211, so that the inner side wall of the air duct 1 is in contact with the transverse plate 21, and therefore, sufficient contact area between the vertical plate 22 and the transverse plate 21 is ensured, the welding effect is improved, and the problem that the vertical plate 22 cannot be welded due to the fact that the transverse plate 21 is welded firstly to cause the shape of the air duct 1 to be enlarged in the prior art is solved.
Referring to fig. 14 and 15, as an improved scheme, during welding, the heat conducting member 61 is tangent to the outer side wall of the air duct 1 at a position corresponding to the welding position of the mounting bracket 2 and the air duct 1, and because the heat accumulation phenomenon at the welding position is most obvious during welding, and the heat radiation effect of the heat conducting member 61 at the tangent point is strongest, the arrangement mode can effectively improve the heat radiation effect of the surface of the air duct, and ensure that the surface is smooth and flat. In order to further improve the heat conduction efficiency, the tangent point of the heat conducting piece 61 and the outer side wall of the air duct 1 corresponds to the central line position of the thickness of the mounting frame 2 at the welding position, namely, the central line position of the thickness of the transverse plate 21 and the vertical plate 22, the arrangement can enable the tangent point to be aligned to the middle part of the welding position as much as possible, so that the heat conduction capability is enhanced, and particularly, when the heat conducting piece 61 is abutted to the outer side wall of the air duct 1, the position of the tangent point is located on the tungsten steel 6132.
Example two:
referring to fig. 1, 2, 11 to 13, and 17, the difference between the first embodiment and the first embodiment is the shape of the mounting bracket 2 is different, the mounting bracket 2 related to the first embodiment has a pi-shaped structure, and includes a horizontal plate 21 and two vertical plates 22 arranged at intervals, the welding device using the welding method is provided with two second heat conducting mechanisms 602, the welding steps of the two vertical plates 22 are the same, and the step of welding the horizontal plate 21 and the air duct 1 is performed after the welding operation of the two vertical plates 22 and the air duct 1 is completed.
The welding step comprises:
s01, placing the mounting bracket 2 on the positioning mechanism 5, and positioning by the positioning mechanism 5, including positioning the cross plate 21 by the cross plate positioning device 51 and positioning the two risers 22 by the riser positioning device 52.
Specifically, referring to fig. 1, 2, 7, 8, 11 to 13 and 17, the transverse plate 21 is placed between the top plate 5131 and the clamping member 5135 of the transverse plate positioning device 51 and supported on the slot 5121, as shown in fig. 7, the piston rod of the first clamping cylinder 5132 is retracted, the connecting arm 5133 is swung counterclockwise to drive the clamping arm 5134 to swing to a side close to the top plate 5131, so as to clamp the transverse plate 21 placed on the slot 5121 between the top plate 5131 and the clamping member 5135, and meanwhile, the clamping member 5135 can adaptively adjust the swinging angle thereof when clamping the transverse plate 21, so as to better adapt to the transverse plate 21 to clamp the transverse plate 21.
The two vertical plates 22 are respectively arranged between the corresponding fixed clamping plates 525 and the corresponding movable clamping plates 524, the baffle plates 514 are abutted against one side of the transverse plate 21, which is located opposite to the vertical plates 22, so that the locating holes 211 are shielded, the connecting convex parts 221 are inserted into the locating holes 211 and are limited by the baffle plates 514, the limiting means that the connecting convex parts 221 are abutted against the baffle plates 514 and cannot penetrate out of the locating holes 211, the second clamping cylinder 521 drives the two movable clamping plates 524 to follow the guide columns 523, which are relatively far away from and clamp the two vertical plates 22, so that the current relative positions of the transverse plate 21 and the two vertical plates.
s02, establish dryer 1 cover in the outside of positioning mechanism 5, make on dryer 1 arranges the bed of high seat 54 in, location cylinder 53 pushes up dryer 1 inside wall to one side of relative mounting bracket 2, make riser 22 and dryer 1's inside wall looks butt, thereby prop dryer 1 at relative both ends respectively, with the degree of freedom of injecing dryer 1 horizontal direction, in order to appear the off normal when follow-up roating seat 32 rotates, because the limiting displacement of baffle 514, riser 22 makes to support dryer 1 inside wall on riser 22 with the current position relation of diaphragm 21 and can not with diaphragm 21 looks butt.
s03, as shown in fig. 1, 2 and 17, the rotary base 32 rotates to transfer the wind tunnel 1 and the mounting frame 2 on the positioning mechanism 5 to the welding station 31.
s04, as shown in fig. 17, the heat-conducting members of the two second heat-conducting mechanisms 602 drive the air cylinders 62 to drive the heat-conducting members 61 to move toward the mounting frame 2, and push and abut against the outer side walls of the corresponding risers 22 of the air duct 1, so that the inner side walls of the air duct 1 cling to the risers 22.
s05, the welding gun 4 respectively welds the positions of the two vertical plates 22 contacting with the air duct 1, namely the welding positions of the vertical plates 22 and the air duct 1.
s06, withdraw from baffle 514, the heat-conducting piece driving cylinder 62 of two second heat-conducting mechanisms 602 orders its heat-conducting piece 61 to continue to push against the air duct 1, under the pushing of second heat-conducting mechanisms 602, the vertical plate 22 and the air duct 1 displace to one side close to the transverse plate 21, so that the connecting convex part 221 penetrates out of the positioning hole 211, stretches out to one side of the transverse plate 21 relative to the vertical plate 22, and reduces the gap between the inner side wall of the air duct 1 and the transverse plate 21.
s07, the heat-conducting members of the first heat-conducting mechanism 601 and the second heat-conducting mechanism 602 drive the cylinder 62 to drive the heat-conducting members 61 to move towards the mounting frame 2, and the pushing and the abutting are performed on the outer side walls of the two ends of the corresponding transverse plate 21 of the air duct 1, so that the inner side wall of the air duct 1 abuts against the transverse plate 22.
s08, the welding gun 4 welds the contact position of the transverse plate 21 and the air duct 1, namely the welding position of the transverse plate 21 and the air duct 1.
s09, the heat conducting members 61 of the first heat conducting mechanism 601, the second heat conducting mechanism 602, and the third heat conducting mechanism 603 are separated from the outer side wall of the wind barrel 1, and the welding gun 4 welds a side surface of the horizontal plate 21 relative to the vertical plate 22 and a portion of the connecting convex portion 221 penetrating through the positioning hole 211 to weld the horizontal plate 21 and the vertical plate 22.
s10, the piston rod of the first clamping cylinder 5132 extends out, the connecting arm 5133 swings clockwise to drive the clamping arm 5134 to swing to the side far away from the top plate 5131, so as to release the transverse plate 21, and the second clamping cylinder 521 drives the two movable clamping plates 524 to approach to the two releasable vertical plates 22 along the guide column 523, so as to release the mounting frame 2.
Compared with the prior art, the welding method provided by the embodiment arranges the heat conducting piece 61 on the outer side wall of the air duct 1 corresponding to the welding position of the inner side wall of the mounting frame 2 and the air duct 1, on one hand, the effect of quick heat conduction can be achieved during welding, so that welding can not be dialyzed, the surface of the air duct 1 is kept smooth and flat, and the heat dissipation effect is improved, so that the situations that the welding surface is deformed and the like due to instantaneous heat accumulation during welding can not occur, the unevenness of the surface of the air duct 1 is avoided, the polishing and flattening process after the existing welding is omitted, the production and the manufacturing are more facilitated, on the other hand, the air duct 1 and the mounting frame 2 can move relatively, the heat conducting piece 61 arranged on the outer side surface of the air duct 1 can ensure that the air duct and the mounting frame.
In addition, because the existing air duct 1 is mainly made of thin plates, the air duct is easy to deform during high-temperature welding, and meanwhile, because the transverse plate 21 and the vertical plate 22 cannot be welded at the same time, the welding sequence can directly influence the welding effect, for example, when the two ends of the transverse plate 21 are welded firstly, the welded air duct 1 deforms greatly, so that a large gap exists between the air duct 1 and the vertical plate 22, the gap is large enough to be filled by welding, and the qualification rate of products is reduced, based on the above problems, when the vertical plate 22 is welded, because the inner side wall of the air duct 1 abutted against the vertical plate 22 cannot be contacted with the transverse plate 21 due to the limit of the baffle 514, the welding of the vertical plate 22 and the air duct 1 by the transverse plate 21 cannot be influenced, after the vertical plate 22 is welded, the baffle 514 is withdrawn, the heat conducting piece 61 of the second heat conducting mechanism 602 continues to push against the air duct 1, so that the vertical plate 22 welded on the air duct 1 and the air, the connecting convex part 221 is driven to penetrate through the positioning hole 211, so that the inner side wall of the air duct 1 is in contact with the transverse plate 21, and therefore, sufficient contact area between the vertical plate 22 and the transverse plate 21 is ensured, the welding effect is improved, and the problem that the vertical plate 22 cannot be welded due to the fact that the transverse plate 21 is welded firstly to cause the shape of the air duct 1 to be enlarged in the prior art is solved.
Other technical features of the present embodiment are the same as those of the first embodiment, and are not described herein.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The welding method of the axial flow fan is used for welding an air duct and a mounting frame of the fan and is characterized in that a heat conducting piece is arranged at a position, corresponding to the welding position of the mounting frame and the inner side wall of the air duct, of the outer side wall of the air duct during welding.
2. The welding method according to claim 1, wherein the mounting frame comprises a transverse plate and a vertical plate, a connecting convex portion is arranged on one side of the vertical plate, a positioning hole is arranged in the middle of the transverse plate corresponding to the connecting convex portion, the heat conducting members comprise a first heat conducting member, a second heat conducting member and a third heat conducting member, and the welding method comprises the following welding steps:
s1, arranging a baffle plate for shielding the positioning hole on one side of the transverse plate, inserting the connecting convex part into the positioning hole and abutting against the baffle plate;
s2, the second heat-conducting piece is abutted against the outer side wall of the corresponding vertical plate of the air duct, so that the inner side wall of the air duct is abutted against the vertical plate;
s3, welding a vertical plate and an air duct;
s4, withdrawing the baffle, and continuously pushing the air duct by the second heat-conducting member to make the vertical plate and the air duct displace to one side close to the transverse plate, so that the connecting convex part penetrates through the positioning hole, and the gap between the inner side wall of the air duct and the transverse plate is reduced;
s5, the first heat-conducting piece and the third heat-conducting piece are abutted against the outer side walls of the two ends of the air duct corresponding to the transverse plate, so that the inner side walls of the air duct are abutted against the two ends of the transverse plate;
and s6, welding the transverse plate and the air duct, and welding the transverse plate and the vertical plate.
3. The welding method of claim 2, wherein the step of welding the cross plate and the riser comprises: after the transverse plate and the air duct are welded, the first heat-conducting piece, the second heat-conducting piece and the third heat-conducting piece are separated from the outer side wall of the air duct, and the transverse plate is connected with the vertical plate by welding one side face of the transverse plate relative to the vertical plate and the part of the connecting convex part penetrating out of the positioning hole.
4. The welding method according to claim 2, wherein the risers are spaced apart by two, and the second heat-conducting member is provided by two corresponding to the risers.
5. The welding method according to any one of claims 1 to 4, wherein the air duct is a hollow cylinder, and the heat-conducting member is tangent to the outer wall of the air duct at a position corresponding to the welding position of the mounting frame and the air duct during welding.
6. The welding method according to claim 5, wherein the tangent point of the heat-conducting member to the outer side wall of the air duct corresponds to the centerline position of the thickness of the mounting frame at the welding position.
7. The welding method according to claim 6, wherein the heat conducting member comprises a heat conducting portion for abutting against an outer side wall of the air duct, the heat conducting portion is composed of a plurality of single bodies, each single body is composed of a copper block on two sides and tungsten steel between the copper blocks on two sides, and the position of the tangent point is located on the tungsten steel.
8. The welding method according to any one of claims 1 to 4, wherein a welding device applying the welding method is provided with a positioning mechanism for mounting the mounting frame, the positioning mechanism is provided with a positioning cylinder, the mounting frame is mounted on the positioning mechanism before welding, the air duct is sleeved outside the positioning mechanism, a piston rod of the positioning cylinder pushes the inner side wall of the air duct to one side opposite to the mounting frame, so that the mounting frame is abutted against the inner side wall of the air duct, and the degree of freedom of the air duct in the horizontal direction is limited.
9. The welding method according to claim 8, wherein the welding device comprises a workbench and a rotary base, the workbench is provided with a welding station, the rotary base is rotatably arranged on the workbench, the positioning mechanisms are arranged on two opposite sides of the rotary base, and the air duct and the mounting rack which are positioned on the positioning mechanisms are transferred to the welding station by the rotary base.
10. The welding method according to claim 8, characterized in that said heat-conducting member is operatively abutted against an outer side wall of said air duct by welding means.
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| CN202010731267.3A CN111872605B (en) | 2020-07-27 | 2020-07-27 | Welding method of axial flow fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202137529U (en) * | 2011-06-21 | 2012-02-08 | 苏州华亚电讯设备有限公司 | Welding cooling device |
| CN202984886U (en) * | 2012-09-06 | 2013-06-12 | 广东美的暖通设备有限公司 | Argon tungsten-arc welding device of barrel shaped thin plate butt joint structure |
| CN204657795U (en) * | 2015-04-19 | 2015-09-23 | 内蒙古北方重工业集团有限公司 | A kind of thin-walled ring parts positioning welding fixture |
| CN208196054U (en) * | 2018-03-28 | 2018-12-07 | 埃斯顿（湖北）机器人工程有限公司 | A kind of blower robot automatic welding work station |
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2020
- 2020-07-27 CN CN202010731267.3A patent/CN111872605B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202137529U (en) * | 2011-06-21 | 2012-02-08 | 苏州华亚电讯设备有限公司 | Welding cooling device |
| CN202984886U (en) * | 2012-09-06 | 2013-06-12 | 广东美的暖通设备有限公司 | Argon tungsten-arc welding device of barrel shaped thin plate butt joint structure |
| CN204657795U (en) * | 2015-04-19 | 2015-09-23 | 内蒙古北方重工业集团有限公司 | A kind of thin-walled ring parts positioning welding fixture |
| CN208196054U (en) * | 2018-03-28 | 2018-12-07 | 埃斯顿（湖北）机器人工程有限公司 | A kind of blower robot automatic welding work station |
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| CN111872605B (en) | 2022-03-29 |
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