CN112809247B - Spot welding apparatus and spot welding method of compressor - Google Patents
Spot welding apparatus and spot welding method of compressor Download PDFInfo
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- CN112809247B CN112809247B CN201911129761.6A CN201911129761A CN112809247B CN 112809247 B CN112809247 B CN 112809247B CN 201911129761 A CN201911129761 A CN 201911129761A CN 112809247 B CN112809247 B CN 112809247B
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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
- B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
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Abstract
The invention relates to the technical field of welding, and provides spot welding equipment and a spot welding method of a compressor. The spot welding apparatus includes: a workpiece stage; a plurality of bases arranged around the workpiece table; the welding guns are respectively arranged on the bases, are driven by the bases and move relative to the workpiece table; and the shielding assemblies are respectively arranged on the bases, are driven by the bases and are linked with the welding guns, and are in self-adaptive movement to shield at least part of the splashing path of the welding guns when the welding guns move towards the workpiece table. According to the invention, the shielding component and the welding gun are linked and move in a self-adaptive manner to shield at least part of the splashing path of the welding gun, so that welding splashes are automatically shielded by the shielding component in the welding process, and the shielding effect is improved.
Description
Technical Field
The invention relates to the technical field of welding, in particular to spot welding equipment and a spot welding method of a compressor.
Background
When the compressor enters three-point welding equipment or six-point welding equipment, the bottom feet are exposed in a welding state, foreign matters are easy to splash and adhere to the surfaces of the bottom feet during spot welding, and particularly, the phenomenon that the foreign matters splash and adhere to the surfaces of the bottom feet is serious when the three/six holes are positioned below the bottom feet.
Therefore, there is a need to improve the phenomenon of the spattered foreign matter adhering to the surface of the feet during the welding of the compressor.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides spot welding equipment and a spot welding method of a compressor, which can shield splashes in a welding process through a shielding assembly.
According to an aspect of the present invention, there is provided a spot welding apparatus including: a workpiece stage; a plurality of bases arranged around the workpiece table; the welding guns are respectively arranged on the bases, are driven by the bases and move relative to the workpiece table; and the shielding assemblies are respectively arranged on the bases, are driven by the bases and are linked with the welding guns, and are in self-adaptive movement to shield at least part of the splashing path of the welding guns when the welding guns move towards the workpiece table.
Preferably, in the spot welding apparatus, the shielding assembly is connected to the base through an elastic element, and moves with the welding gun toward the workpiece table, and the base drives the shielding assembly to make an elastic telescopic adaptive motion along the movement direction of the welding gun through the elastic element.
Preferably, in the spot welding apparatus described above, the shielding member includes: the connecting rod is slidably arranged in the base in a penetrating manner, and the elastic element for connecting the connecting rod and the base is arranged at the second end, extending out of the base, of the connecting rod; and the shielding piece is arranged at the first end of the connecting rod extending out of the base.
Preferably, in the spot welding apparatus described above, the base includes: the connecting seat is used for fixing the welding gun and is provided with a first through hole for the connecting rod to penetrate through; the U-shaped support extends along the movement direction of the welding gun, the U-shaped support is provided with two side plates and a bottom plate, the two side plates are fixed on the connecting seat, the bottom plate is provided with a second through hole for the second end of the connecting rod to penetrate through, and the elastic element is limited between the second end of the connecting rod and the bottom plate.
Preferably, in the spot welding device, the elastic element is a spring, is sleeved at the second end of the connecting rod, and is located between the connecting seat and the bottom plate.
Preferably, in the spot welding device, the shielding member is connected to the first end of the connecting rod through a movable mechanism, and the shielding member is driven by the movable mechanism to shield or separate from a spattering path of the welding gun.
Preferably, in the above spot welding device, the movable mechanism is a tilting mechanism, and the tilting mechanism includes: the free end of the first overturning rod is connected with the first end of the connecting rod, the free end of the second overturning rod is provided with a notch, and the shielding piece is embedded in the notch; and the fixed sleeve is used for limiting or giving way of the overturning space of the first overturning rod and the second overturning rod.
Preferably, in the spot welding device, the fixing sleeve is slidably sleeved outside the first turning rod and the second turning rod, and the fixing sleeve is sleeved and fixes the hinged end of the first turning rod and the hinged end of the second turning rod through a ball head plug screw to limit the turning space; or the fixed sleeve exposes the hinged end of the first overturning rod and the hinged end of the second overturning rod, so that the overturning space is made available.
Preferably, in the spot welding device, the movable mechanism is a plug-in mechanism, and the plug-in mechanism includes: the first end of the fixed sleeve is connected with the first end of the connecting rod, and the second end of the fixed sleeve provides an inserting space; and the first end of the plug rod is inserted into the insertion space in a pluggable manner, the second end of the plug rod is provided with a notch, and the shielding piece is embedded in the notch.
Preferably, in the spot welding device, when the insertion and extraction rod is inserted into the insertion space, the fixing sleeve fixes the insertion and extraction rod through a ball head plug screw; when the ball head plug screw is loosened, the plug-pull rod can be plugged relative to the fixed sleeve.
Preferably, in the spot welding apparatus described above, the shielding member is a straight plate to shield the head of the welding gun; or the shielding piece is an arc-shaped plate to partially cover the head of the welding gun; or the shielding piece is an annular plate to cover the head of the welding gun.
According to another aspect of the present invention, there is provided a spot welding method for spot welding a compressor using the above spot welding apparatus, the spot welding method comprising: placing the compressor on the workpiece table, so that welding points of the compressor correspond to the welding guns, and feet of the compressor correspond to the shielding assemblies; the welding gun is driven by the base to move towards the workpiece table until a gap is aligned with the welding point, the shielding component is driven by the base to be linked with the welding gun, and the shielding component moves to be attached to the side wall of the compressor in a self-adaptive manner and at least shields the welding gun and the bottom foot; and spot welding the welding spots through the welding gun, wherein the shielding assembly at least shields welding spatters spattered to the feet from the welding gun during spot welding.
Compared with the prior art, the invention has the beneficial effects that at least:
sheltering from the welding splash of spot welding in-process through sheltering from the subassembly, sheltering from the subassembly and being linked by base drive and welder, realize on the one hand that self-adaptation when welder moves towards the work piece platform moves on sheltering from the at least part route that splashes of welder to shelter from the welding splash automatically in welding process, on the other hand realizes the in close contact with the work piece, shelters from the effect in order to promote.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view showing the construction of a spot welding apparatus in an embodiment of the invention;
fig. 2 to 4 are schematic views showing a set of welding guns and a shielding assembly of the spot welding apparatus according to the embodiment of the present invention;
FIG. 5 is a schematic view of another set of gun and shield assembly of the spot welding apparatus according to an embodiment of the present invention; and
FIG. 6 is a schematic view showing the positional relationship between the welding gun and the shielding assembly and the compressor during spot welding according to the embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 1 shows a main structure of spot welding equipment in the embodiment, and referring to fig. 1, the spot welding equipment in the embodiment includes: a workpiece stage; a plurality of bases 2 arranged around the workpiece table; the welding guns 3 are respectively arranged on the bases 2, and the welding guns 3 are driven by the bases 2 to move relative to the workpiece table; and a plurality of sheltering from subassembly 4, set up respectively on a plurality of bases 2, shelter from subassembly 4 by base 2 drive, with welder 3 linkage, shelter from subassembly 4 when welder 3 moves towards the work piece platform on self-adaptation motion shelters from at least part of welder 3 path of splashing.
The spot welding apparatus of the present embodiment is used for a work spot welding process such as triple spot welding and six spot welding. The workpiece to be welded is placed on a work bench, for example, a compressor 1 to be welded is shown in fig. 1, and the position of the compressor 1 corresponds to the position of the work bench. The base 2 is connected with a driving mechanism and used for driving the shielding component 4 to be linked when the driving welding gun 3 moves towards the workpiece table, so that the shielding component 4 can move to shield at least part of the splashing path of the welding gun 3 in a self-adaptive manner, and welding splashing objects can be shielded. The number of the welding guns 3 is determined according to the spot welding process, and when the spot welding equipment is used for three-spot welding, three welding guns 3 are arranged; when the spot welding apparatus is used for six spot welding, six welding guns 3 are provided. The number of the shielding components 4 is determined according to the parts of the workpiece to be shielded, and when the three parts of the workpiece need to be shielded, three shielding components 4 are arranged; when six parts of the workpiece need to be shielded, six shielding assemblies 4 are arranged. For example, the spot welding apparatus shown in fig. 1 includes six welding guns 3 and three shielding assemblies 4, wherein a structure in which the welding guns 3 and the shielding assemblies 4 are simultaneously provided on the base 2 is denoted by M, and a structure in which the welding guns 3 are separately provided on the base 2 is denoted by N.
In one embodiment, the shielding assembly 4 is connected with the base 2 through an elastic element 5, and as the welding gun 3 moves towards the workpiece table, the base 2 drives the shielding assembly 4 to make elastic telescopic self-adaptive movement along the movement direction of the welding gun 3 through the elastic element 5. Shelter from subassembly 4 by the drive of base 2 and the linkage of welder 3, shelter from subassembly 4 when welder 3 moves towards the work piece platform through the flexible self-adaptation motion of elasticity, realize sheltering from on welder 3's the route that splashes on the one hand to shelter from the welding splash in welding process is automatic, on the other hand realizes the in close contact with of work piece, shelters from the effect in order to promote.
Fig. 2 to 4 show structural schematics of a set of welding guns 3 and a shielding assembly 4 of the spot welding apparatus in the embodiment. As shown in fig. 2 to 4, in one embodiment, the shielding assembly 4 includes: at least one connecting rod 41 slidably disposed through the base 2, wherein a second end 41b of the connecting rod 41 extending out of the base 2 is provided with an elastic element 5 connecting the connecting rod 41 and the base 2; and a shutter 42 provided at a first end 41a of the connection rod 41 protruding out of the base 2.
The number of the connecting rods 41 can be determined according to actual requirements, and when more than two connecting rods 41 are arranged, the stability of the whole structure of the shielding component 4 can be realized. When the welding gun 3 moves towards the workpiece table, under the elastic action of the elastic element 5 connecting the connecting rod 41 and the base 2, the base 2 drives the connecting rod 2 to move towards the workpiece table in a self-adaptive manner, and the shielding piece 42 contacts with the workpiece to realize buffering through elastic expansion and close contact with the workpiece. Wherein the direction of movement of the connecting rod 41 coincides with the direction of movement of the welding gun 3, indicated as "x" in fig. 2. The linkage arm arrangement shown at 20 in figure 2 is used to link the base 2 to the drive mechanism.
The welding torch 3 performs welding by the head portion 3a and generates welding spatter, and the shielding member 42 is shielded mainly at the head portion 3a of the welding torch 3. The shielding member 42 may be a straight plate as shown in fig. 2, and may shield the head 3a of the welding gun 3, specifically, between the head 3a of the welding gun 3 and the portion of the workpiece to be shielded. The shield 42 may also be an arc-shaped plate to partially cover the head 3a of the welding gun 3; or the shutter 42 is an annular plate to cover the head 3a of the welding gun 3.
In one embodiment, referring to fig. 3, the base 2 comprises: the connecting seat 21 is used for fixing the welding gun 3 and is provided with a first through hole for the connecting rod 41 to penetrate through; and a U-shaped bracket 22 extending along the movement direction "x" of the welding gun 3, the U-shaped bracket 22 having two side plates 221 and a bottom plate 222, the two side plates 221 being fixed to the connection base 21, the bottom plate 222 being provided with a second through hole for the second end 41b of the connection rod 41 to pass through, the elastic element 5 being limited between the second end 41b of the connection rod 41 and the bottom plate 222. Wherein the elastic member 5 may be located at an inner side of the U-shaped bracket 22 as shown in fig. 3, or may be located at a side where the second end 41b of the connecting rod 41 protrudes out of the bottom plate 222. The position limitation of the elastic member 5 may be achieved by a position limitation member 51 fixed to the connection rod 41.
When the base 2 drives the welding gun 3 forward, i.e. along the indicated "x 1 The direction moves toward the workpiece table, the bottom plate 222 drives the elastic element 5 to compress/stretch (when the elastic element 5 is arranged at the inner side of the U-shaped bracket 22, it is compressed, and when the elastic element is arranged at the side of the connecting rod 41 extending out of the bottom plate 222, it is stretched), and the connecting rod 41 performs the self-adaptive movement of elastic expansion and contraction under the elastic action. Specifically, the connecting rod 41 is first shown along the line "x" of the drawing 1 The direction moves towards the workpiece table, and when the shielding piece 4 contacts the workpiece, the shielding piece is buffered and moves in a self-adaptive manner under the elastic action of the elastic element 5 until the shielding piece 5 is tightly attached to the workpiece and is shielded between the welding gun 3 and the part of the workpiece to be shielded.
The elastic element 5, which may be a spring as shown in fig. 3, is sleeved on the second end 41b of the connecting rod 41 and located between the connecting seat 21 and the bottom plate 222. In other embodiments, the elastic element 5 may be another element that can achieve an elastic action.
Further, the shielding member 42 is connected to the first end 41a of the connecting rod 41 through a movable mechanism, and the shielding member 42 is driven by the movable mechanism to shield or leave the spatter path of the welding gun 3. Thus, during welding, the shield 42 shields the head 3a of the welding gun 3 from welding spatter; at the end of the weld, shield 42 is clear of head 3a of gun 3, facilitating cleaning of gun 3.
In one embodiment, as shown with reference to fig. 3 and 4, the movable mechanism is a tilting mechanism, by which shutter 42 is connected to first end 41a of connecting rod 41. Tilting mechanism includes: the first overturning rod 61 and the second overturning rod 62 are hinged with each other, the free end of the first overturning rod 61 is connected with the first end 41a of the connecting rod 41, the free end of the second overturning rod 62 is provided with a notch, and the shielding piece 42 is embedded in the notch; and a fixing sleeve 63 for limiting or making room for the turning of the first turning bar 61 and the second turning bar 62. When the fixing sleeve 63 limits the turning space of the first turning rod 61 and the second turning rod 62, the first turning rod 61 and the second turning rod 62 are fixed, and the shielding member 42 stably shields the splashing path of the welding gun 3; when the fixing sleeve 63 leaves the turning space of the first turning rod 61 and the second turning rod 62, the second turning rod 62 can be turned relative to the first turning rod 61, so that the shielding member 42 is away from the spattering path of the welding gun 3.
The fixing sleeve 63 can be slidably sleeved outside the first overturning rod 61 and the second overturning rod 62, and when the fixing sleeve 63 limits an overturning space, the fixing sleeve 63 is sleeved and fixes the hinged ends of the first overturning rod 61 and the second overturning rod 62 through the ball head screw plug 64; the fixing sleeve 63 exposes the hinged ends of the first and second overturning rods 61 and 62 when the fixing sleeve 63 gives way to the overturning space. It should be noted that fig. 3 shows the hinged ends 612 of the first and second turning rods 61 and 62, and in practical use, the fixing sleeve 63, when limiting the turning space, will move to cover and fix the hinged ends 612 of the first and second turning rods 61 and 62 to limit the turning action of the second turning rod 62. When it is desired to clean torch 3, as shown in fig. 4, sleeve 63 is removed and second inverting bar 62 is inverted so that shield 42 is clear of head 3a of torch 3.
In one embodiment, the first turning bar 61 and the second turning bar 62 are stainless steel turning bars, the fixing sleeve 63 is a copper sleeve, and the base 2 is made of glass fiber, so that the base has the advantages of good insulation, high temperature resistance, incombustibility, high strength and the like. The outer wall of the connecting rod 41 is chrome-plated, and the shielding piece 42 is made of brass. In other embodiments, the materials of the components in the spot welding equipment can be adjusted as desired.
Fig. 5 shows a structural schematic of another set of welding guns 3 and a shield assembly 4 of the spot welding apparatus in the embodiment. Referring to fig. 5, the movable mechanism may be a plugging mechanism including: a fixing sleeve 71, wherein a first end of the fixing sleeve 71 is connected with the first end 41a of the connecting rod 41, and a second end of the fixing sleeve 71 provides an insertion space 710; and the plugging rod 72, a first end of the plugging rod 72 is pluggable in the plugging space 710, a second end of the plugging rod 72 is provided with a notch, and the shielding piece 42 is embedded in the notch. When the plugging rod 72 is plugged into the plugging space 710, the fixing sleeve 71 can fix the plugging rod 72 through the ball head plug screw 73, so that the shielding member 42 shields the spatter path of the welding gun 3 to shield the welding spatter; when the ball head plug screw 73 is loosened, the plug rod 72 can be plugged relative to the fixed sleeve 71, so that the shielding piece 42 is separated from the splashing path of the welding gun 3, and the welding gun 3 is convenient to clean.
The embodiment of the invention also provides a spot welding method for performing spot welding on the compressor by using the spot welding equipment described in any embodiment. Fig. 6 shows the positional relationship of the welding gun 3 and the shielding member 4 with the compressor 1 during spot welding in the embodiment. Referring to fig. 6, the spot welding method of the compressor in the present embodiment includes: placing the compressor 1 on a workpiece table, and enabling welding points 11 of the compressor 1 to correspond to the welding guns 3 and feet 12 of the compressor 1 to correspond to the shielding assemblies 4; the welding gun 3 is driven by the base 2 to move towards the workpiece platform to the gap alignment welding point 11, the shielding component 4 is driven by the base 2 to be linked with the welding gun 3, and the welding gun 3 adaptively moves to be close to the side wall of the compressor 1 and is at least shielded between the welding gun 3 and the bottom foot 12; and spot welding the welding spot 11 by the welding gun 3, and the shielding component 4 at least shields welding spatter spattered to the base 12 from the welding gun 3 during spot welding.
The shape of the end of the shielding piece 42 is adapted to the side wall of the compressor 1, so that the shielding piece 42 is in seamless fit with the side wall of the compressor 1; there is a slight clearance, for example 5mm, between shield 42 and foot 12; there is also a clearance, for example 4.5mm, between shutter 42 and head 3a of welding gun 3; the vertical distance of the shield 42 from the welding point 11 on the compressor 1 is for example 25mm; the shield 42 itself has a thickness of, for example, 2mm. The above-described numerical setting can better achieve spot welding of the compressor 1 while preventing welding spatter from adhering to the foot 12. Of course, the above numerical setting is only an example, and may be adaptively changed in other application scenarios.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (5)
1. A spot welding apparatus characterized by comprising:
a workpiece stage;
a plurality of bases arranged around the workpiece table;
the welding guns are respectively arranged on the bases, are driven by the bases and move relative to the workpiece table; and
the shielding assemblies are respectively arranged on the bases, are driven by the bases and are linked with the welding gun, and when the welding gun moves towards the workpiece table, the shielding assemblies adaptively move to shield at least part of a splashing path of the welding gun;
the shielding assembly is connected with the base through an elastic element and moves towards the workpiece table along with the welding gun, and the base drives the shielding assembly to do elastic telescopic self-adaptive movement along the movement direction of the welding gun through the elastic element;
the shading component comprises:
the connecting rod is slidably arranged in the base in a penetrating manner, and a second end, extending out of the base, of the connecting rod is provided with the elastic element for connecting the connecting rod and the base;
the shielding piece is arranged at the first end, extending out of the base, of the connecting rod;
the shielding piece is connected with the first end of the connecting rod through a movable mechanism, the movable mechanism is a turnover mechanism or a plug-pull mechanism, and the shielding piece is driven by the movable mechanism to shield or leave a splashing path of the welding gun;
when the movable mechanism is a turnover mechanism, the turnover mechanism comprises: the free end of the first overturning rod is connected with the first end of the connecting rod, the free end of the second overturning rod is provided with a notch, and the shielding piece is embedded in the notch; the fixed sleeve limits or gives way to the overturning space of the first overturning rod and the second overturning rod; the fixed sleeve is sleeved outside the first turning rod and the second turning rod in a sliding manner, and the hinged ends of the first turning rod and the second turning rod are fixed by the fixed sleeve through ball head screw plugs so as to limit the turning space; or the fixed sleeve exposes the hinged ends of the first overturning rod and the second overturning rod to make the overturning space available;
when the movable mechanism is a plugging mechanism, the plugging mechanism comprises: the first end of the fixed sleeve is connected with the first end of the connecting rod, and the second end of the fixed sleeve provides an inserting space; the first end of the plugging rod is plugged into the plugging space in a plugging manner, the second end of the plugging rod is provided with a notch, and the shielding piece is embedded in the notch; when the plug-pull rod is plugged in the plugging space, the fixing sleeve fixes the plug-pull rod through a ball head plug screw; when the ball head plug screw is loosened, the plug-pull rod can be plugged relative to the fixed sleeve.
2. The spot welding apparatus according to claim 1, wherein the base includes:
the connecting seat is used for fixing the welding gun and is provided with a first through hole for the connecting rod to penetrate through; and
the U-shaped support extends along the movement direction of the welding gun, the U-shaped support is provided with two side plates and a bottom plate, the two side plates are fixed on the connecting seat, the bottom plate is provided with a second through hole for the second end of the connecting rod to penetrate through, and the elastic element is limited between the second end of the connecting rod and the bottom plate.
3. The spot welding apparatus according to claim 2, wherein the elastic member is a spring sleeved on the second end of the connecting rod and located between the connecting seat and the bottom plate.
4. The spot welding apparatus according to claim 1, wherein the shielding member is a straight plate to shield a head of the welding gun; or
The shielding piece is an arc-shaped plate and partially covers the head of the welding gun; or
The shielding piece is an annular plate to cover the head of the welding gun.
5. A spot welding method of a compressor, which is characterized in that a spot welding apparatus according to any one of claims 1 to 4 is used to spot-weld the compressor, the spot welding method comprising:
placing the compressor on the workpiece table, so that welding points of the compressor correspond to the welding guns, and feet of the compressor correspond to the shielding assemblies;
the base drives the welding gun to move towards the workpiece table to a gap to align with the welding point, the shielding assembly is driven by the base to be in linkage with the welding gun, the shielding assembly moves to be attached to the side wall of the compressor in a self-adaptive mode, and at least the shielding assembly is shielded between the welding gun and the bottom foot; and
the welding spot is spot-welded by the welding gun, and the shielding assembly at least shields welding spatters spattered to the footing from the welding gun during spot welding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911129761.6A CN112809247B (en) | 2019-11-18 | 2019-11-18 | Spot welding apparatus and spot welding method of compressor |
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| CN201911129761.6A CN112809247B (en) | 2019-11-18 | 2019-11-18 | Spot welding apparatus and spot welding method of compressor |
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| CN112809247B true CN112809247B (en) | 2023-01-17 |
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| CN104084665A (en) * | 2013-04-01 | 2014-10-08 | 珠海启世机械设备有限公司 | Three-spot welding equipment for compressor |
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