A argon arc welding device for online continuous surface treatment

Abstract

The invention discloses an argon arc welding device for online continuous surface treatment, which belongs to the technical field of argon arc welding. In order to solve the problems of inconvenient control of the movement trajectory of the welding gun and inconvenient retracting of the welding wire in the argon arc welding device, the invention drives the fan-shaped gear through a second motor to drive the arc plate to reciprocate, and makes the welding gun swing back and forth through a swing rod to expand the welding width and uniformity. At the same time, the spur gear drives the fixed plate to approach the position of the welding gun under the drive of the second motor, and the end of the wire feeding tube is close to the electrode of the welding gun and the surface of the workpiece. Subsequently, the welding wire contacts the surface of the welding workpiece under the action of the wire feeding mechanism. After the welding is completed, the wire feeding mechanism stops feeding the welding wire, and the second motor stops driving. Under the resetting action of the spring, the wire feeding mechanism moves obliquely upward to reset, completes the retracting action, realizes swing welding, and improves the welding quality. At the same time, the welding wire is automatically retracted after the welding is completed to avoid the welding wire sticking, and the operation is simple.

Description

Technical Field

[0001] The invention relates to the technical field of argon arc welding, in particular to an argon arc welding device for online continuous surface treatment. Background Art

[0002] Argon arc welding is a common welding method that uses an inert gas (usually argon) as a shielding gas to prevent the molten metal from reacting with oxygen in the air. Conventional argon arc welding mostly uses a welding gun. When in use, one hand holds the welding wire and the other hand holds the welding gun to weld the workpiece. In order to ensure the quality of welding, the welding gun needs to be swung to improve the quality and uniformity of welding and increase the width of the weld. During the welding process, the electrode on the welding gun needs to maintain a certain distance from the workpiece to form an arc. In addition, when the welding process ends or welding needs to be stopped, the welding wire needs to be retracted to prevent the welding wire from sticking to the workpiece. Therefore, the existing argon arc welding equipment has the problem of inconvenient control of the movement trajectory of the welding gun and inconvenient retraction of the welding wire, which affects the quality of welding. Summary of the invention

[0003] The purpose of the present invention is to provide an argon arc welding device for online continuous surface treatment, which solves the problems of inconvenient control of the movement trajectory of the welding gun and inconvenient retraction of the welding wire in the argon arc welding device in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: an argon arc welding device for online continuous surface treatment, comprising a fixed frame, and a work table movably arranged above the fixed frame, and also comprising a welding assembly movably arranged on the fixed frame, and the welding assembly is located above the work table, the fixed frame is provided with two groups, a telescopic cylinder is installed on the top of the fixed frame, the work table is fixedly installed at the output end of the telescopic cylinder, and a guide rod is installed on the fixed frame, and the guide rod is used to guide the welding assembly;

[0005] The welding assembly comprises a shell slidably connected to the guide rod, a swing groove, a rotating groove, an oblique slide groove and a linear slide groove are arranged inside the shell, the welding assembly also comprises a swing mechanism, a welding gun, a retraction mechanism and a wire feeding mechanism arranged inside the shell, the swing mechanism comprises a rotating shaft rotatably connected in the rotating groove, a swing rod is installed on the rotating shaft, an arc-shaped rack and a connecting frame are respectively installed at both ends of the swing rod, the welding gun is installed at the bottom of the connecting frame, the swing mechanism also comprises a second motor installed inside the shell, the output end of the second motor is fixedly connected to a sector gear, the inside of the shell is slidably connected with an arc plate, the inside of the arc plate is provided with first tooth grooves corresponding to the sector gear, and the outer side surface of the arc plate is provided with a second tooth groove meshing with the arc-shaped rack;

[0006] The wire feeding mechanism is slidably connected in the oblique slide groove, and the retraction mechanism includes a sliding block slidably connected to the inside of the linear slide groove, a connecting plate is installed on one side of the sliding block, a tooth position is arranged on the inner side of the connecting plate, and the tooth position covers three quarters of the inner side of the connecting plate, a spring is fixedly installed between the other side of the sliding block and the inner wall of the linear slide groove, a fixing plate is installed at the bottom of the connecting plate, and a second movable groove is arranged on the fixing plate, the retraction mechanism also includes a spur gear fixedly connected to the fan gear through a shaft, and the spur gear corresponds to the tooth position, and a guide shaft is fixedly installed on the outside of the wire feeding mechanism, and the guide shaft is movably connected in the second movable groove.

[0007] Furthermore, the wire feeding mechanism is a structure consisting of a shell, a wire feeding tube, a servo motor and a wire feeding guide wheel.

[0008] Furthermore, a support leg is installed at the bottom of the fixing frame, and a driving mechanism is installed on the fixing frame, and the driving mechanism is used to drive the welding assembly to move on the guide rod.

[0009] Furthermore, the driving mechanism includes a first motor mounted on a fixing frame, and also includes a screw rod fixedly mounted on an output end of the first motor, and the screw rod is threadably connected to the housing.

[0010] Furthermore, a sliding groove is provided on the top of the work surface, and the sliding groove is provided in four groups. A positioning block is slidably connected inside the sliding groove, and a positioning bolt is rotatably connected to the side of the work surface, and the positioning bolt is threadedly connected to the positioning block.

[0011] Furthermore, a through groove is provided in the middle of the work surface, and round tube positioning frames are provided at both sides of the through groove at the bottom of the work surface.

[0012] Furthermore, the round tube positioning frame includes a fixed seat fixedly installed at the bottom of the work table, a rotating frame is rotatably connected to the fixed seat, a rotating roller is rotatably connected to the other end of the rotating frame, a first movable groove is provided on the inner side surface of the rotating frame, a movable shaft is movably provided in the first movable groove, a nut seat is installed in the middle of the movable shaft, a rotating seat is installed at the bottom of the work table, and the round tube positioning frame also includes an adjusting bolt rotatably connected to the bottom of the rotating seat, and the adjusting bolt is threadedly connected to the nut seat.

[0013] Furthermore, a surface cleaning mechanism is installed on the side of the shell, and the surface cleaning mechanism includes a negative pressure cover fixedly installed on the side of the shell, and a polishing machine arranged inside the negative pressure cover, and the bottom of the negative pressure cover is open, and also includes a negative pressure pump installed on the side of the shell.

[0014] Furthermore, a second filter, a first filter and a negative pressure pipe are sequentially connected between the negative pressure pump and the negative pressure cover, and a one-way valve is installed on the negative pressure pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides an argon arc welding device for online continuous surface treatment. The second motor drives the fan gear and then drives the arc plate to reciprocate, and the swing rod makes the welding gun swing back and forth to expand the welding width and uniformity. At the same time, the spur gear is driven by the second motor to make the fixed plate close to the position of the welding gun, and the end of the wire feeding tube is close to the electrode of the welding gun and the surface of the workpiece. Then, under the action of the wire feeding mechanism, the welding wire contacts the surface of the welding workpiece. After the welding is completed, the wire feeding mechanism stops feeding the welding wire, and the second motor stops driving. Under the resetting action of the spring, the wire feeding mechanism moves obliquely upward to reset, completes the retraction action, realizes swing welding, and improves the welding quality. At the same time, the welding wire is automatically retracted after the welding is completed to avoid the welding wire sticking, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is an exploded view of the overall structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the fixing frame and the driving mechanism of the present invention;

[0020] Figure 4 It is an exploded view of the workbench and the round tube fixing frame structure of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the round tube fixing frame of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the welding assembly and the surface cleaning mechanism of the present invention;

[0023] Figure 7 It is an exploded view of the surface cleaning mechanism structure of the present invention;

[0024] Figure 8 An exploded view of the welding assembly structure of the present invention;

[0025] Fig. 9 It is a cross-sectional view of the housing structure of the present invention;

[0026] Fig.10 It is an exploded view of the partial structure of the welding assembly of the present invention;

[0027] Fig.11 It is a schematic diagram of the structure of the withdrawal mechanism of the present invention.

[0028] In the figure: 1, fixed frame; 11, supporting leg; 12, telescopic cylinder; 13, guide rod; 2, working table; 21, sliding groove; 22, positioning block; 23, positioning bolt; 24, through groove; 3, driving mechanism; 31, first motor; 32, screw rod; 4, round tube positioning frame; 41, fixed seat; 42, rotating frame; 421, first movable groove; 43, rotating roller; 44, movable shaft; 45, nut seat; 46, rotating seat; 47, adjusting bolt; 5, welding assembly; 51, housing; 511, swinging groove; 512, rotating groove; 513, oblique slide groove; 514, linear slide groove; 52, swing mechanism; 521, rotating shaft; 5 22. Swing rod; 523. Connecting frame; 524. Second motor; 525. Fan gear; 526. Arc plate; 5261. First tooth groove; 5262. Second tooth groove; 527. Arc rack; 53. Welding gun; 54. Retraction mechanism; 541. Sliding block; 542. Connecting plate; 5421. Tooth position; 543. Spring; 544. Straight gear; 545. Fixed plate; 5451. Second movable groove; 546. Guide shaft; 55. Wire feeding mechanism; 6. Surface cleaning mechanism; 61. Negative pressure hood; 62. Polishing machine; 63. Negative pressure pump; 64. First filter; 65. Second filter; 66. Negative pressure pipe; 67. One-way valve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to solve the technical problems of inconvenient control of welding gun movement trajectory and inconvenient wire retraction in argon arc welding equipment, such as Figure 1-Figure 11 As shown, the following preferred technical solutions are provided:

[0031] A argon arc welding device for online continuous surface treatment, comprising a fixed frame 1, and a work table 2 movably arranged above the fixed frame 1, and also comprising a welding assembly 5 movably arranged on the fixed frame 1, and the welding assembly 5 is located above the work table 2, the fixed frame 1 is provided with two groups, a telescopic cylinder 12 is installed on the top of the fixed frame 1, the work table 2 is fixedly installed at the output end of the telescopic cylinder 12, the height of the work table 2 can be controlled by the telescopic cylinder 12, and thus the position between the workpiece to be welded and the welding assembly 5 can be adjusted, and a guide rod 13 is installed on the fixed frame 1, and the guide rod 13 is used to guide the welding assembly 5;

[0032] The welding assembly 5 includes a housing 51 slidably connected to the guide rod 13, and a swing groove 511, a rotating groove 512, an oblique slide groove 513 and a linear slide groove 514 are arranged inside the housing 51. The welding assembly 5 also includes a swing mechanism 52, a welding gun 53, a retraction mechanism 54 and a wire feeding mechanism 55 arranged inside the housing 51. The swing mechanism 52 includes a rotating shaft 521 rotatably connected to the rotating groove 512, and a swing rod 522 is installed on the rotating shaft 521. The two ends of the swing rod 522 are respectively installed with an arc rack 527 and a connecting frame 523. The welding gun 53 is installed at the bottom of the connecting frame 523. The swing mechanism 52 also includes a second motor installed inside the housing 51 524, the output end of the second motor 524 is fixedly connected with a sector gear 525, and the interior of the housing 51 is slidably connected with an arc plate 526, and the interior two sides of the arc plate 526 are provided with first tooth grooves 5261 corresponding to the sector gear 525, and the outer side surface of the arc plate 526 is provided with a second tooth groove 5262 meshing with the arc rack 527. Under the drive of the second motor 524, the sector gear 525 can drive the arc plate 526 to reciprocate back and forth, and the second tooth groove 5262 on the outer side surface of the arc plate 526 meshes with the arc rack 527 to make the swing rod 522 swing back and forth around the rotating shaft 521, and finally make the welding gun 53 swing in an arc inside the swing slot 511;

[0033] The wire feeding mechanism 55 is slidably connected in the oblique slide groove 513, and the retracting mechanism 54 includes a sliding block 541 slidably connected to the inside of the linear slide groove 514, a connecting plate 542 is installed on one side of the sliding block 541, a tooth position 5421 is arranged on the inner side of the connecting plate 542, and the tooth position 5421 covers three-quarters of the inner side of the connecting plate 542, a spring 543 is fixedly installed between the other side of the sliding block 541 and the inner wall of the linear slide groove 514, a fixing plate 545 is installed at the bottom of the connecting plate 542, and a second movable groove 5451 is arranged on the fixing plate 545, and the retracting mechanism 54 also includes a spur gear 544 fixedly connected to the fan-shaped gear 525 through an axis, and the spur gear 544 corresponds to the tooth position 5421, and a guide shaft 546 is fixedly installed on the outside of the wire feeding mechanism 55, and the guide shaft 546 is movably connected in the second movable groove 5451. When connected, the second motor 524 drives the sector gear 525 to rotate counterclockwise, and the spur gear 544 rotates counterclockwise to make the connecting plate 542 move in the direction close to the welding gun 53 until the spur gear 544 corresponds to the edge of the tooth position 5421, and the spur gear 544 no longer pushes the connecting plate 542 to move. When the connecting plate 542 moves in the direction close to the welding gun 53, the wire feeding mechanism 55 moves obliquely downward under the action of the fixed plate 545 and the guide shaft 546. At this time, the wire feeding mechanism 55 transports the welding wire for welding. When the welding stops, the second motor 524 is powered off and no longer drives the welding gun 53 to swing. At this time, the sliding block 541 and the connecting plate 542 are reset under the action of the spring 543, so that the wire feeding mechanism 55 moves obliquely upward, thereby completing the retraction action. The wire feeding mechanism 55 is a structure composed of a shell, a wire feeding tube, a servo motor and a wire feeding guide wheel.

[0034] A support leg 11 is installed at the bottom of the fixed frame 1, and a driving mechanism 3 is installed on the fixed frame 1. The driving mechanism 3 is used to drive the welding assembly 5 to move on the guide rod 13. The driving mechanism 3 includes a first motor 31 installed on the fixed frame 1, and also includes a screw rod 32 fixedly installed at the output end of the first motor 31, and the screw rod 32 is threadedly connected to the housing 51.

[0035] A sliding groove 21 is provided on the top of the work table 2, and the sliding groove 21 is provided with four groups. A positioning block 22 is slidably connected inside the sliding groove 21. A positioning bolt 23 is rotatably connected to the side of the work table 2. The positioning bolt 23 is threadedly connected to the positioning block 22. The position of the positioning block 22 in the sliding groove 21 can be changed by rotating the positioning bolt 23. The positioning block 22 is used to position the workpiece to be welded. A through groove 24 is provided in the middle of the work table 2. A round tube positioning frame 4 is provided on both sides of the through groove 24 at the bottom of the work table 2. The round tube positioning frame 4 includes a fixed seat 41 fixedly installed at the bottom of the work table 2. A rotating frame 42 is rotatably connected to the fixed seat 41. The other end of the movable frame 42 is rotatably connected to a rotating roller 43, and a first movable groove 421 is provided on the inner side surface of the rotating frame 42, and a movable shaft 44 is movably provided in the first movable groove 421, and a nut seat 45 is installed in the middle of the movable shaft 44. A rotating seat 46 is installed at the bottom of the work table 2, and the round tube positioning frame 4 also includes an adjusting bolt 47 rotatably connected to the bottom of the rotating seat 46, and the adjusting bolt 47 is threadedly connected to the nut seat 45. The inclination angle of the rotating frame 42 can be changed by rotating the adjusting bolt 47. When the workpiece to be welded is a round tube, the two groups of rotating rollers 43 can support the round tube so that the upper part of the round tube extends upward from the through groove 24 to the bottom of the welding assembly 5.

[0036] A surface cleaning mechanism 6 is installed on the side of the shell 51, and the surface cleaning mechanism 6 includes a negative pressure cover 61 fixedly installed on the side of the shell 51, and a polishing machine 62 arranged inside the negative pressure cover 61, and the bottom of the negative pressure cover 61 is open, and also includes a negative pressure pump 63 installed on the side of the shell 51, and a second filter 65, a first filter 64 and a negative pressure pipe 66 are connected between the negative pressure pump 63 and the negative pressure cover 61 in sequence. The first filter 64 is filled with water, and the water is used to filter solid debris and powder. The second filter 65 is used to filter water to prevent water from entering the negative pressure pump 63, and a one-way valve 67 is installed on the negative pressure pipe 66 to prevent water from flowing back.

[0037] Specifically, during welding, the positioning block 22 is first positioned on the workpiece to be welded by rotating the positioning bolt 23, and then the negative pressure pump 63, the polisher 62, the first motor 31, the second motor 524 and the wire feeding mechanism 55 are started in sequence. The surface of the workpiece is polished and grinded by the cooperation of the negative pressure pump 63 and the polisher 62 to give it a metallic luster. The first motor 31 drives the screw rod 32 to move the welding assembly 5 to weld the workpiece. During welding, the second motor 524 drives the fan gear 525 to reciprocate the arc plate 526, and the swing rod 522 is used to swing the welding gun 53 back and forth to expand the welding width and uniformity. At the same time, the spur gear 544 in the second Driven by the motor 524, the fixed plate 545 is moved closer to the position of the welding gun 53. Since the tooth position 5421 only covers three-quarters of the area of ​​the connecting plate 542, the fixed plate 545 no longer moves after moving within a certain range. The end of the wire feeding tube is now close to the electrode of the welding gun 53 and the surface of the workpiece. Subsequently, the welding wire contacts the surface of the welding workpiece under the action of the wire feeding mechanism 55. After the welding is completed, the wire feeding mechanism 55 stops feeding the welding wire, and the second motor 524 stops driving. Under the resetting action of the spring 543, since the second motor 524 is in a power-off state, it can rotate freely under external force, so the wire feeding mechanism 55 will eventually move diagonally upward to reset and complete the retraction action.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An argon arc welding device for online continuous surface treatment, comprising a fixed frame (1), and a work surface (2) movably arranged above the fixed frame (1), and also comprising a welding assembly (5) movably arranged on the fixed frame (1), and the welding assembly (5) is located above the work surface (2), characterized in that: The fixing frame (1) is provided with two groups, a telescopic cylinder (12) is installed on the top of the fixing frame (1), the work table (2) is fixedly installed on the output end of the telescopic cylinder (12), and a guide rod (13) is installed on the fixing frame (1), and the guide rod (13) is used to guide the welding assembly (5); The welding assembly (5) comprises a housing (51) slidably connected to a guide rod (13); a swing groove (511), a rotation groove (512), an oblique slide groove (513) and a linear slide groove (514) are arranged inside the housing (51); the welding assembly (5) further comprises a swing mechanism (52), a welding gun (53), a retracting mechanism (54) and a wire feeding mechanism (55) arranged inside the housing (51); the swing mechanism (52) comprises a rotation shaft (521) rotatably connected to the rotation groove (512); a swing rod (522) is mounted on the rotation shaft (521); arc rods are mounted at both ends of the swing rod (522). A toothed rack (527) and a connecting frame (523), the welding gun (53) being mounted at the bottom of the connecting frame (523), the swing mechanism (52) further comprising a second motor (524) mounted inside the housing (51), the output end of the second motor (524) being fixedly connected to a sector gear (525), an arc plate (526) being slidably connected inside the housing (51), first tooth grooves (5261) corresponding to the sector gear (525) being provided on both sides inside the arc plate (526), ​​and second tooth grooves (5262) ​​meshing with the arc-shaped rack (527) being provided on the outer side surface of the arc plate (526); The wire feeding mechanism (55) is slidably connected in the oblique slide groove (513), and the retracting mechanism (54) includes a sliding block (541) slidably connected inside the linear slide groove (514), a connecting plate (542) is installed on one side of the sliding block (541), and a tooth position (5421) is arranged on the inner side of the connecting plate (542), and the tooth position (5421) covers three quarters of the inner side of the connecting plate (542), and the other side of the sliding block (541) is fixedly installed between the inner wall of the linear slide groove (514). A spring (543) is provided, a fixing plate (545) is installed at the bottom of the connecting plate (542), a second movable groove (5451) is provided on the fixing plate (545), the retraction mechanism (54) further comprises a spur gear (544) fixedly connected to the fan-shaped gear (525) via an axis, and the spur gear (544) corresponds to the tooth position (5421), and a guide shaft (546) is fixedly installed on the outside of the wire feeding mechanism (55), and the guide shaft (546) is movably connected in the second movable groove (5451).

2. The argon arc welding equipment for online continuous surface treatment according to claim 1, characterized in that: The wire feeding mechanism (55) is a structure consisting of a housing, a wire feeding tube, a servo motor and a wire feeding guide wheel.

3. The argon arc welding equipment for online continuous surface treatment according to claim 1, characterized in that: A support leg (11) is installed at the bottom of the fixing frame (1), and a driving mechanism (3) is installed on the fixing frame (1), wherein the driving mechanism (3) is used to drive the welding assembly (5) to move on the guide rod (13).

4. The argon arc welding equipment for online continuous surface treatment as claimed in claim 3, characterized in that: The driving mechanism (3) comprises a first motor (31) mounted on a fixing frame (1), and also comprises a screw rod (32) fixedly mounted on an output end of the first motor (31), wherein the screw rod (32) is threadedly connected to the housing (51).

5. The argon arc welding equipment for online continuous surface treatment according to claim 1, characterized in that: The top of the work surface (2) is provided with a sliding groove (21), and the sliding groove (21) is provided with four groups. The interior of the sliding groove (21) is slidably connected to a positioning block (22), and the side of the work surface (2) is rotatably connected to a positioning bolt (23), and the positioning bolt (23) is threadedly connected to the positioning block (22).

6. The argon arc welding equipment for online continuous surface treatment according to claim 1, characterized in that: A through groove (24) is provided in the middle of the work surface (2), and round tube positioning frames (4) are provided on both sides of the through groove (24) at the bottom of the work surface (2).

7. The argon arc welding equipment for online continuous surface treatment according to claim 6, characterized in that: The round tube positioning frame (4) comprises a fixed seat (41) fixedly mounted on the bottom of the work surface (2), a rotating frame (42) being rotatably connected to the fixed seat (41), a rotating roller (43) being rotatably connected to the other end of the rotating frame (42), a first movable groove (421) being provided on the inner side surface of the rotating frame (42), a movable shaft (44) being movably arranged in the first movable groove (421), a nut seat (45) being installed in the middle of the movable shaft (44), a rotating seat (46) being installed at the bottom of the work surface (2), and the round tube positioning frame (4) further comprises an adjusting bolt (47) rotatably connected to the bottom of the rotating seat (46), and the adjusting bolt (47) is threadedly connected to the nut seat (45).

8. The argon arc welding equipment for online continuous surface treatment according to claim 1, characterized in that: A surface cleaning mechanism (6) is installed on the side of the housing (51), and the surface cleaning mechanism (6) comprises a negative pressure cover (61) fixedly installed on the side of the housing (51), and a polishing machine (62) arranged inside the negative pressure cover (61), and the bottom of the negative pressure cover (61) is open, and also comprises a negative pressure pump (63) installed on the side of the housing (51).

9. The argon arc welding equipment for online continuous surface treatment according to claim 8, characterized in that: A second filter (65), a first filter (64) and a negative pressure pipe (66) are sequentially connected between the negative pressure pump (63) and the negative pressure cover (61); a one-way valve (67) is installed on the negative pressure pipe (66) to prevent water from flowing back.

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