CN115070165B - Narrow-gap vertical electro-gas welding process and equipment - Google Patents
Narrow-gap vertical electro-gas welding process and equipment Download PDFInfo
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- CN115070165B CN115070165B CN202210511650.7A CN202210511650A CN115070165B CN 115070165 B CN115070165 B CN 115070165B CN 202210511650 A CN202210511650 A CN 202210511650A CN 115070165 B CN115070165 B CN 115070165B
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- 238000003466 welding Methods 0.000 title claims abstract description 186
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000008569 process Effects 0.000 title claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims description 46
- 238000006073 displacement reaction Methods 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 238000013519 translation Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 241001016380 Reseda luteola Species 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
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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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/127—Means for tracking lines during arc welding or cutting
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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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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Abstract
The invention discloses a thick plate narrow-gap vertical electro-gas welding process, which comprises the following steps of: step one, fixing thick plates to be welded to form narrow-gap welding seams, wherein the narrow-gap welding seams are in a vertical state; fixing a lining plate on one side of the back surface of the narrow-gap welding line, and connecting a metal backing plate on one side of the lining plate facing the welding line; and thirdly, adopting a welding method of gas metal arc welding of a consumable electrode, horizontally moving a welding gun along the thickness direction, lifting the welding gun along the height direction, melting the metal backing plate in the welding process, improving the welding efficiency by the arrangement, reducing the welding heat input, and forcing the back of the welding seam to form at the lining plate at the outer side of the metal backing plate. The invention also discloses thick plate narrow gap vertical electro-gas welding equipment applied to the thick plate narrow gap vertical electro-gas welding process.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a narrow-gap vertical electro-gas welding process and equipment.
Background
Narrow gap welding is a highly efficient arc welding method that is specific to thick plate welding. Due to the limited energy density of the welding arc, the penetration of single arc welding is limited, and in order to ensure penetration, the most common welding process is the welding process method used for grooving, and the most common welding process is V-shaped groove. The V-shaped groove has the advantages of easy processing and easy welding quality assurance, and can be suitable for metal plates, pipes and the like with various thicknesses. However, as the thickness of the metal sheet increases, the cross-sectional area of the groove increases in geometric progression, for example, the thickness increases by a factor of two and the cross-sectional area of the groove increases by a factor of three. Therefore, as the plate thickness increases, the welding workload increases in geometric progression. The groove angle is reduced, the sectional area of the groove is reduced, and the welding workload is reduced. However, with respect to the V-groove, the weld root cannot be welded if the angle is too small. For this purpose, a small-angle U-groove, the so-called narrow gap weld groove, is proposed. The width of the narrow gap groove is usually 10-20mm, so even if the groove is tens or even hundreds of millimeters deep, the welding gun can penetrate into the bottom of the groove to ensure the welding of the root. However, the angle of the U-groove is so small that the wire is nearly parallel to the side wall of the workpiece and the arc cannot ensure fusion of the side wall. For this purpose, a number of narrow gap welding methods have been developed which are capable of directing an arc in a narrow gap towards the side wall of the workpiece. However, all of these methods not only have a complicated gun structure, but also do not require a workpiece groove having high dimensional accuracy. Narrow gap welding methods can therefore only be used for welding special products with precisely machined grooves, such as thick-walled high-pressure vessel welding. The narrow gap welding method can not be applied to the thick plate welding of steel structures, engineering machinery and other fields with great requirements on welding workload, so that the welding efficiency can not be improved.
Vertical electro-gas welding is another efficient arc welding process suitable for thick plate welding. The welding efficiency of the vertical electro-gas welding mainly comes from the welding line forming mode, namely, the thick metal plates are placed vertically, a gap is reserved between the two metal plates, and forced forming clamping plate devices are arranged on two sides of the welding line. The welding arc burns in the area surrounded by the two metal plates and the two side forced forming splints, the melted welding wire is filled into the area surrounded by the two metal plates and the two side forced forming splints, and the welding pool area covers the area surrounded by the two metal plates and the two side forced forming splints. The conventional vertical electro-gas welding is also provided with a V-shaped groove, and a gap of 8-10mm is reserved on the back surface of the welding seam. Thus, the thicker the metal sheet, the greater the area of the area enclosed by the two metal sheets and the two side force-forming cleats, i.e., the more wire metal is to be filled. Filling more wire metal means higher welding heat input. Whereas too high a welding heat input will lead to a decrease in the metal mechanical properties of the weld, in particular in the impact toughness of the weld. Although special high line energy steel plates and welding wires are developed at present, the performance is still limited and the price is very high compared with the conventional materials. Thus, the application of vertical electro-gas welding is also greatly limited.
Disclosure of Invention
The first object of the invention is to provide a thick plate narrow gap vertical electro-gas welding process, which has the advantages of saving welding flux and high welding efficiency.
The technical aim of the invention is realized by the following technical scheme:
A thick plate narrow gap vertical electro-gas welding process comprises the following steps:
step one, fixing thick plates to be welded to form narrow-gap welding seams, wherein the narrow-gap welding seams are in a vertical state;
Fixing a lining plate on one side of the back surface of the narrow-gap welding line, and connecting a metal backing plate on one side of the lining plate facing the welding line;
and thirdly, adopting a welding method of gas metal arc welding of a consumable electrode, horizontally moving a welding gun along the thickness direction, and lifting the welding gun along the height direction, wherein the metal backing plate is melted in the welding process.
By adopting the technical scheme, the welding efficiency can be improved by melting the metal backing plate, the welding heat input is reduced, and the backing plate at the outer side of the metal backing plate can force the back of the welding seam to be formed.
Further set up: and step three, the horizontal moving speed of the welding gun is constant or variable.
Further set up: in the third step, the lifting speed of the welding gun in the height direction is self-adaptive, namely, the distance between the contact tip of the welding gun and the welding pool is automatically controlled to be constant.
Through adopting above-mentioned technical scheme, welder's removal and lift are according to the welding actual conditions, including waiting to weld factors such as thick plate material, ambient temperature, can adjust, can adapt to different welding environment, improve the welding effect.
Further set up: and thirdly, selecting a cold wire gun to send wires to a welding pool in the welding process, and reducing the welding heat input.
By adopting the technical scheme, when the thickness of the thick plate to be welded is smaller during welding, the heat input of the welding arc to the welding seam is increased, in order to control the welding heat input, the cold wire is filled into the molten pool, and the cold wire is melted to absorb the energy in the molten pool, so that the cold wire is quickly cooled and solidified, and meanwhile, the filling metal amount is increased.
Another object of the present invention is to provide a narrow gap vertical electro-gas welding apparatus having the advantages of adjustable welding gun path and good welding effect.
The technical aim of the invention is realized by the following technical scheme:
A narrow-gap vertical electro-gas welding device is used for the vertical electro-gas welding process and comprises a frame, a welding gun and a digital oscillator, wherein the welding gun is fixed on the digital oscillator, the digital oscillator comprises a path adjusting mechanism which is used for controlling the moving path of the welding gun in the welding process,
The path adjusting mechanism comprises a sliding base and a sliding block for fixing a welding gun, wherein a plurality of sliding tables are connected to the sliding base in a sliding way, the sliding directions of the sliding tables are parallel to each other, a telescopic sliding rail is hinged between the adjacent sliding tables, a sliding groove is arranged on the sliding tables, the sliding block comprises a sliding part matched with the telescopic sliding rail and the sliding groove, a telescopic driving assembly is also connected to the sliding base in a sliding way and is used for driving the sliding block to move along the sliding direction perpendicular to the sliding tables, the telescopic driving assembly comprises a translation bracket and an electric telescopic rod, the electric telescopic rod horizontally slides along the translation bracket, the sliding direction of the electric telescopic rod is parallel to the sliding direction of the sliding table, the sliding part moves along the telescopic sliding rail and the sliding groove under the action of the electric telescopic rod, the electric telescopic rod slides along the translation bracket and keeps opposite to the sliding block in the moving process,
The sliding base is connected with a plurality of path adjusting motors which are in threaded fit with the sliding table and drive the path adjusting screws to rotate.
By adopting the technical scheme, the path adjusting component sets the movement route of the welding gun, so that the welding gun can translate to a certain extent at the welding seam, different heat dissipation conditions at different positions of the welding seam are adapted, and the welding effect is improved.
Further set up: the telescopic slide rail comprises a first telescopic plate and a second telescopic plate which are parallel to each other, the first telescopic plate comprises a first outer plate and a first inner plate, the first outer plate comprises a telescopic groove, the first inner plate comprises a telescopic block, the cross section of the telescopic groove is in a convex shape, the telescopic block corresponds to the convex shape, when the telescopic block is positioned in the telescopic groove, one side of the telescopic block, which faces the second telescopic plate, is parallel to the inner side of the first outer plate, and the sliding part is in contact with the inner side wall of the first outer plate, the telescopic block and the inner side wall of the first inner plate respectively in sequence in the sliding process of the telescopic slide rail.
By adopting the technical scheme, the contact between the inner side and the sliding part is kept stable in the extension and shortening process of the telescopic sliding rail, the vibration in the moving process of the welding gun is avoided, and the accuracy of the moving path of the welding gun is ensured.
Further set up: the digital oscillator further comprises a horizontal displacement mechanism and an angle adjusting mechanism, wherein the horizontal displacement mechanism is used for adjusting the horizontal position of the sliding base, and the angle adjusting mechanism is used for adjusting the orientation of the sliding base.
Through adopting above-mentioned technical scheme, after placing the thick plate that waits to weld, through position adjustment mechanism and angle adjustment mechanism for welder on the horizontal displacement mechanism can just be right the welding seam between the thick plate that waits to weld, welder is located the settlement position when guaranteeing to weld, has reduced the requirement of waiting to weld thick plate and put the position, makes the welding preparation work more convenient, improves welding efficiency.
Further set up: the horizontal displacement mechanism comprises a first horizontal displacement component and a second horizontal displacement component which are mutually perpendicular in displacement direction, the first horizontal displacement component comprises a first horizontal motor and a first driving screw rod connected to the first horizontal motor, a first horizontal sliding block is in threaded fit on the first driving screw rod, the second horizontal displacement component is connected to the first horizontal sliding block, the second horizontal displacement component comprises a second horizontal motor and a second driving screw rod connected to the second horizontal motor, a second horizontal sliding block is in threaded fit on the second driving screw rod,
The angle adjusting mechanism is connected to the second horizontal sliding block and comprises an angle adjusting rotary table rotationally connected with the second horizontal sliding block, the angle adjusting rotary table is rotationally connected with the second horizontal sliding block, an angle adjusting motor for driving the angle adjusting rotary table to rotate is connected to the second horizontal sliding block, and the sliding base is fixed on the angle adjusting rotary table.
Through adopting above-mentioned technical scheme, first horizontal motor, the horizontal position of second horizontal motor control horizontal plane direction for welder's center is located the horizontal symmetry axis of welding seam, then through angle adjustment motor adjustment angle, makes welder aim at the welding seam, is used for follow-up welding.
Further set up: the novel welding device is characterized in that a water-cooling limiting mechanism is arranged on the sliding base and comprises a limiting telescopic rod and a water-cooling stop block, pressure detection assemblies are arranged at two ends of the water-cooling stop block, which are far away from the sliding base, in the horizontal direction, and the pressure detection assemblies are used for detecting the pressure between the water-cooling limiting mechanism and a thick plate to be welded.
By adopting the technical scheme, the pressure detection assembly can verify whether the orientation of the horizontal displacement assembly is correct, and the welding accuracy is further improved.
Further set up: and the digital oscillator is also connected with a cold wire gun, and the cold wire gun and the welding gun synchronously move.
By adopting the technical scheme, the cold wire gun is used for filling unheated welding wires into the molten pool, and the melting of the cold wires absorbs the energy in the molten pool, so that the cold wires are quickly cooled and solidified, and the filling metal amount is increased.
Drawings
FIG. 1 is a schematic diagram of a welding process of example 1;
FIG. 2 is a schematic diagram of the welding process of example 2;
FIG. 3 is a schematic overall structure of embodiment 3;
Fig. 4 is a schematic structural view at a path adjusting mechanism in embodiment 3;
fig. 5 is a schematic structural diagram of the telescopic sliding rail in embodiment 3;
fig. 6 is a schematic view of an exploded structure at the position adjusting mechanism and the angle adjusting mechanism in embodiment 3.
In the figure, 1, thick plates to be welded; 2. a metal backing plate; 3. a lining plate; 4. a welding gun; 5. a cold wire gun; 6. a frame; 7. a digitizing wobbler; 8. a path adjusting mechanism; 9. a sliding base; 10. a sliding block; 11. a sliding table; 12. a telescopic slide rail; 13. a sliding groove; 14. a telescoping drive assembly; 15. translating the bracket; 16. an electric telescopic rod; 17. adjusting a screw rod; 18. a path adjusting motor; 19. a first expansion plate; 20. a second expansion plate; 21. a first outer plate; 22. a first inner panel; 23. a telescopic slot; 24. a telescopic block; 25. a first horizontal displacement assembly; 26. a second horizontal displacement assembly; 27. a first horizontal motor; 28. a first drive screw; 29. a first horizontal slider; 30. a second horizontal motor; 31. a second drive screw; 32. a second horizontal slider; 33. an angle adjusting motor; 34. a water-cooling limit mechanism; 35. a limiting telescopic rod; 36. and (5) water-cooling the stop block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
a thick plate narrow gap vertical electro-gas welding process, as shown in figure 1, comprises the following steps:
step one, fixing a thick plate 1 to be welded to form a narrow-gap welding line, wherein the narrow-gap welding line is in a vertical state;
Secondly, fixing a lining plate 3 on one side of the back surface of the narrow-gap welding line, and then connecting a metal backing plate 2 on one side of the lining plate 3 facing the welding line;
And thirdly, adopting a welding method of consumable electrode gas shielded welding, horizontally moving the welding gun 4 along the thickness direction, wherein the moving speed is uniform or variable, and adaptively lifting along the height direction, so that the metal backing plate 2 is melted in the welding process.
Example 2:
In the thick plate narrow gap vertical electro-gas welding process, as shown in fig. 2, the difference between the embodiment 2 and the embodiment 1 is only that a cold wire gun 5 is selected to send wires to a welding pool in the welding process of the third step, so that the welding heat input is reduced.
The melting of the cold wire will absorb the energy in the molten pool, so that the cold wire is quickly cooled and solidified, and meanwhile, the filling metal amount is increased, and the welding efficiency is improved.
Example 3:
the narrow-gap vertical electro-gas welding equipment comprises a frame 6, a welding gun 4 and a digital oscillator 7, wherein the welding gun 4 is fixed on the digital oscillator 7, the digital oscillator 7 comprises a path adjusting mechanism 8, and the path adjusting mechanism 8 is used for controlling the moving path of the welding gun 4 in the welding process.
The path adjusting mechanism 8 comprises a sliding base 9 and a sliding block 10 for fixing the welding gun 4, a plurality of sliding tables 11 are connected to the sliding base 9 in a sliding mode, sliding directions of the sliding tables 11 are parallel to each other, a telescopic sliding rail 12 is hinged between the adjacent sliding tables 11, a sliding groove 13 is formed in each sliding table 11, and the telescopic sliding rail 12 is communicated with the sliding groove 13. The slider 10 includes a sliding portion that cooperates with the telescopic slide rail 12 and the slide groove 13, the sliding portion being provided in a cylindrical shape, and the circumferential side surface being in contact with the slide groove 13 and the telescopic slide rail 12. The sliding base 9 is connected with a plurality of path adjusting motors 18 which are in threaded fit with the sliding table 11 and drive the path adjusting screws 17 to rotate. The sliding base 9 is further connected with a telescopic driving assembly 14 in a sliding manner, the telescopic driving assembly 14 is used for driving the sliding block 10 to move along the sliding direction perpendicular to the sliding table 11, the telescopic driving assembly 14 comprises a translation bracket 15 and an electric telescopic rod 16, the electric telescopic rod 16 horizontally slides along the translation bracket 15, the sliding direction of the electric telescopic rod 16 is parallel to the sliding direction of the sliding table 11, the sliding part moves along the telescopic sliding rail 12 and the sliding groove 13 under the action of the electric telescopic rod 16, and the electric telescopic rod 16 slides along the translation bracket 15 and keeps right against the sliding block 10 in the moving process.
Referring to fig. 6, the telescopic slide rail 12 includes a first telescopic plate 19 and a second telescopic plate 20 which are parallel to each other, the first telescopic plate 19 includes a first outer plate 21 and a first inner plate 22, the first outer plate 21 includes a telescopic slot 23, the first inner plate 22 includes a telescopic block 24, the cross section of the telescopic slot 23 is in a convex shape, the telescopic block 24 corresponds to a convex shape, when the telescopic block 24 is positioned in the telescopic slot 23, one side of the telescopic block 24 facing the second telescopic plate 20 is parallel to the inner side of the first outer plate 21, and the sliding part is respectively contacted with the inner side wall of the first outer plate 21, the telescopic block 24 and the inner side wall of the first inner plate 22 in sequence during the sliding process of the sliding part in the telescopic slide rail 12.
Referring to fig. 3 and 6, the digitizing oscillator 7 further includes a horizontal displacement mechanism for adjusting the horizontal position of the slide base 9, and an angle adjustment mechanism for adjusting the orientation of the slide base 9. The horizontal displacement mechanism comprises a first horizontal displacement assembly 25 and a second horizontal displacement assembly 26, wherein the displacement directions of the first horizontal displacement assembly and the second horizontal displacement assembly are mutually perpendicular. The first horizontal displacement assembly 25 comprises a first horizontal motor 27 and a first driving screw rod 28 connected to the first horizontal motor 27, a first horizontal sliding block 29 is in threaded fit on the first driving screw rod, and the second horizontal displacement assembly 26 is connected to the first horizontal sliding block 29. The second horizontal displacement assembly 26 comprises a second horizontal motor 30 and a second driving screw 31 connected to the second horizontal motor 30, and a second horizontal sliding block 32 is screwed on the second driving screw 31.
The second horizontal sliding block 32 is connected with an angle adjusting mechanism, the angle adjusting mechanism comprises an angle adjusting turntable rotationally connected with the second horizontal sliding block 32, the angle adjusting turntable is rotationally connected with the second horizontal sliding block 32, the second horizontal sliding block 32 is connected with an angle adjusting motor 33 for driving the angle adjusting turntable to rotate, and the sliding base 9 is fixed on the angle adjusting turntable.
Referring to fig. 4, a water-cooling limiting mechanism 34 is disposed on the sliding base 9, the water-cooling limiting mechanism 34 includes a limiting telescopic rod 35 and a water-cooling stop block 36, two ends of the water-cooling stop block 36 in the horizontal direction away from one side of the sliding base 9 are provided with pressure detection assemblies, and the pressure detection assemblies are used for detecting the pressure between the water-cooling limiting mechanism 34 and the thick plate 1 to be welded.
The digital oscillator 7 is also connected with a cold wire gun 5, and the cold wire gun 5 is connected to the welding gun 4 and moves synchronously with the welding gun 4.
Working principle:
Welding preparation: firstly, fixing a thick plate 1 to be welded to form a vertical narrow-gap welding seam; then fixing a lining plate 3 on the back side of the thick plate 1 to be welded, shielding the back side of the narrow-gap welding line, and then placing a metal backing plate 2 with the width equal to that of the narrow-gap welding line into the narrow-gap welding line and abutting against the lining plate 3; and then welding by a narrow gap vertical electro-gas welding device.
Before welding, the welding gun 4 is opposite to a narrow gap welding seam through a horizontal displacement mechanism and an angle adjusting mechanism, after adjustment, the orientation verification is carried out through a water-cooling limit mechanism 34, when a water-cooling stop block 36 contacts a thick plate to be detected, the pressure of pressure detection assemblies on two sides is the same, alignment is indicated, otherwise, the angle adjusting mechanism is controlled to rotate towards the side with larger pressure, which is displayed by the pressure detection assemblies; then the PLC control module is used for respectively controlling the electric telescopic rod 16 and the path adjusting motor 18, so that the welding gun 4 moves according to the set horizontal movement speed (constant speed or variable speed) and the set path, thereby controlling the movement path of the welding gun 4 in the narrow-gap welding seam, controlling different welding paths according to different heat dissipation conditions of different positions of the narrow-gap welding seam, and improving the welding effect.
When the thickness of the thick plate 1 to be welded is smaller during welding, the heat input of welding arc to the welding seam is increased, in order to control the welding heat input, cold wires are filled into a molten pool through a cold wire gun 5, and the cold wires melt and absorb the energy in the molten pool, so that the cold wires are quickly cooled and solidified, and meanwhile, the filling metal amount is increased.
The above-described embodiments do not limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present invention.
Claims (4)
1. A narrow gap vertical electro-gas welding apparatus for use in a vertical electro-gas welding process comprising the steps of:
step one, fixing a thick plate (1) to be welded to form a narrow-gap welding line, wherein the narrow-gap welding line is in a vertical state;
Secondly, fixing a lining plate (3) on one side of the back surface of the narrow-gap welding line, and then connecting a metal backing plate (2) on one side of the lining plate (3) facing the welding line;
Thirdly, adopting a welding method of consumable electrode gas shielded welding, horizontally moving a welding gun (4) along the thickness direction, and lifting the welding gun along the height direction, wherein the metal backing plate (2) is melted in the welding process;
In the third step, the horizontal moving speed of the welding gun (4) is constant or variable;
in the third step, the lifting speed of the welding gun (4) in the height direction is self-adaptive, namely, the distance between the contact tip of the welding gun (4) and a welding pool is automatically controlled to be constant;
in the welding process of the third step, a wire cooling gun (5) is selected to send wires to a welding pool, so that the welding heat input is reduced;
The narrow-gap vertical electro-gas welding equipment comprises a frame (6), a welding gun (4) and a digital oscillator (7), wherein the welding gun (4) is fixed on the digital oscillator (7), the digital oscillator (7) comprises a path adjusting mechanism (8), the path adjusting mechanism (8) is used for controlling the moving path of the welding gun (4) in the welding process,
The path adjusting mechanism (8) comprises a sliding base (9) and a sliding block (10) for fixing a welding gun (4), wherein a plurality of sliding tables (11) are connected to the sliding base (9) in a sliding manner, the sliding directions of the sliding tables (11) are parallel to each other, a telescopic sliding rail (12) is hinged between the adjacent sliding tables (11), a sliding groove (13) is formed in the sliding tables (11), the sliding block (10) comprises a sliding part matched with the telescopic sliding rail (12) and the sliding groove (13), a telescopic driving assembly (14) is further connected to the sliding base (9) in a sliding manner, the telescopic driving assembly (14) is used for driving the sliding block (10) to move along the sliding direction perpendicular to the sliding tables (11), the telescopic driving assembly (14) comprises a translation bracket (15) and an electric telescopic rod (16), the electric telescopic rod (16) horizontally slides along the translation bracket (15), the sliding direction of the electric telescopic rod (16) is parallel to the sliding direction of the sliding rail (11), the sliding part directly faces the sliding rail (12) and the sliding groove (13) under the action of the electric telescopic rod (16), and the electric telescopic rod (16) moves along the sliding block (13) in a sliding process of the sliding direction opposite to the sliding direction,
The sliding base (9) is connected with a plurality of path adjusting screws (17) which are in threaded fit with the sliding table (11) and a path adjusting motor (18) which drives the path adjusting screws (17) to rotate;
The telescopic sliding rail (12) comprises a first telescopic plate (19) and a second telescopic plate (20) which are parallel to each other, the first telescopic plate (19) comprises a first outer plate (21) and a first inner plate (22), the first outer plate (21) comprises a telescopic groove (23), the first inner plate (22) comprises a telescopic block (24), the cross section of the telescopic groove (23) is in a convex shape, the telescopic block (24) is correspondingly in a convex shape, when the telescopic block (24) is positioned in the telescopic groove (23), one side of the telescopic block (24) facing the second telescopic plate (20) is parallel to the inner side of the first outer plate (21), and the sliding part is sequentially contacted with the inner side wall of the first outer plate (21), the inner side wall of the telescopic block (24) and the inner side wall of the first inner plate (22) respectively in the sliding process of the telescopic sliding rail (12);
the digital oscillator (7) further comprises a horizontal displacement mechanism and an angle adjusting mechanism, wherein the horizontal displacement mechanism is used for adjusting the horizontal position of the sliding base (9), and the angle adjusting mechanism is used for adjusting the orientation of the sliding base (9).
2. The narrow gap vertical electro-gas welding apparatus as claimed in claim 1, wherein the horizontal displacement mechanism comprises a first horizontal displacement assembly (25) and a second horizontal displacement assembly (26) with mutually perpendicular displacement directions, the first horizontal displacement assembly (25) comprises a first horizontal motor (27) and a first driving screw (28) connected to the first horizontal motor (27), the first driving screw (28) is in threaded fit with a first horizontal slide block (29), the second horizontal displacement assembly (26) is connected to the first horizontal slide block (29), the second horizontal displacement assembly (26) comprises a second horizontal motor (30) and a second driving screw (31) connected to the second horizontal motor (30), the second driving screw (31) is in threaded fit with a second horizontal slide block (32),
The angle adjusting mechanism is connected to the second horizontal sliding block (32), the angle adjusting mechanism comprises an angle adjusting rotary table rotationally connected with the second horizontal sliding block (32), an angle adjusting motor (33) for driving the angle adjusting rotary table to rotate is connected to the second horizontal sliding block (32), and the sliding base (9) is fixed to the angle adjusting rotary table.
3. The narrow gap vertical electro-gas welding equipment according to claim 1 or 2, wherein a water-cooling limiting mechanism (34) is arranged on the sliding base (9), the water-cooling limiting mechanism (34) comprises a limiting telescopic rod (35) and a water-cooling stop block (36), two ends of the water-cooling stop block (36) in the horizontal direction, which are far away from one side of the sliding base (9), are provided with pressure detection assemblies, and the pressure detection assemblies are used for detecting pressure between the water-cooling limiting mechanism (34) and a thick plate (1) to be welded.
4. The narrow gap vertical electro-gas welding apparatus as claimed in claim 1, wherein the digitized wobbler (7) is further connected with a cold wire gun (5), and the cold wire gun (5) moves synchronously with the welding gun (4).
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| CN202210511650.7A CN115070165B (en) | 2022-05-11 | 2022-05-11 | Narrow-gap vertical electro-gas welding process and equipment |
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| CN115070165B true CN115070165B (en) | 2024-05-03 |
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Citations (21)
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| CN115070165A (en) | 2022-09-20 |
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