Intelligent shell welding system

Abstract

The invention discloses an intelligent shell welding system, and relates to the technical field of intelligent welding systems, a welding gun unit and a wire feeding wheel are movably arranged on a mounting seat, a wire guide seat is arranged in a feeding pipe of the welding gun unit, and movable grooves in which movable beads are movably arranged are formed in a circumferential array in a hole; the carrier mechanism moves to the position, located on the vertical lower side of the welding gun unit, of the wire feeding wheel so that the movable bead can roll to the first end of the movable groove, and the movable bead gets close to the axis of the passing hole. According to the intelligent shell welding system provided by the invention, radial compression and straightening of the welding wire fed into the welding gun unit are realized by utilizing the movable bead, so that the situation that the welding wire is bent in the welding gun unit under the action of thrust of the wire feeding wheel and the gravity of the welding wire is relieved, and the situation of wire blockage in the welding gun unit is reduced. And the movable beads can uniformly and radially abut against the welding wires to roll so as to convey and straighten the welding wires, and the conveying stability and smoothness of the welding wires are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent welding systems, and in particular to an intelligent shell welding system. Background Art

[0002] As is known, in production operations, a shell welding system is often used to weld a circular shell and form a circular weld. Circular welding is used in everything from pipes to cylindrical containers.

[0003] For example, the invention patent with application publication number CN116690049B and application publication date of 2023.12.26, named "A welding system for circular shell butt welds", the specific structure of its welding system includes a circular track mechanism, a carrier mechanism and a welding mechanism, wherein the carrier mechanism includes a frame, four sets of pressure wheel assemblies and two sets of parallel drive units.

[0004] The shortcoming of the existing technology is that the carrier mechanism provided on the circular track mechanism is used to drive the welding mechanism to move in a circular motion for welding. When welding a shell with a larger axial length, the axis of the circular track mechanism needs to be arranged parallel to the horizontal plane. Therefore, the circular track mechanism can be divided into an upper half and a lower half. A wire feeding wheel needs to be provided on the welding mechanism to push the welding wire into the welding gun unit. When the welding mechanism is located in the upper half of the circular track mechanism, the thrust of the wire feeding wheel and the gravity of the welding wire itself are used to feed the welding wire into the welding gun unit; when the welding mechanism is in the lower half of the circular track mechanism, the gravity of the welding wire is converted into blocking the welding wire from entering the welding gun unit, so that the wire pushing resistance of the welding wire is increased, and the welding wire material is relatively soft. At this time, the welding wire is bent under the thrust of the wire feeding wheel and the gravity of the welding wire itself, which causes the problem of wire blockage in the welding gun unit. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent shell welding system to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: an intelligent shell welding system, comprising a circular track and a carrier mechanism movably arranged thereon, the carrier mechanism being movably provided with a mounting seat, the mounting seat being movably provided with a welding gun unit and a wire feeding wheel, a wire guide seat with a through hole being coaxially arranged in the feed pipe of the welding gun unit, a movable groove with movable beads movably arranged inside the circular array in the through hole, the carrier mechanism being moved to the vertical lower side of the wire feeding wheel to make the movable beads roll to the first end of the movable groove, and the movable beads are close to the axis of the through hole.

[0007] As a further description of the above technical solution: it also includes a movable seat and a connecting plate, the two ends of the connecting plate are respectively connected to the movable seat and the welding gun unit, and the movable seat is movably arranged on the mounting seat to drive the welding gun unit to swing through the connecting plate to adjust the welding gun angle.

[0008] As a further description of the above technical solution: the guide wire seat is fixedly provided with flexible rings in a linear array that abut against the inside of the feed tube. The first end of the guide wire seat is rotatably set on the end of the movable seat. The movable seat is driven to move to pull the guide wire seat to reduce the angle between it and the axis of the feed tube.

[0009] As a further description of the above technical solution: it also includes an annular capsule fixedly arranged in the guide wire seat in an annular shape to extend into the first end of the movable groove, and the guide wire seat rotates relative to the movable seat to make the annular capsule expand and bulge close to the axis of the hole.

[0010] As a further description of the above technical solution: it also includes a fixed seat, the guide wire seat is provided with a rotating shaft, and the fixed seat is inserted and slidably arranged on the movable seat to enclose the rotating shaft on the movable seat.

[0011] As a further description of the above technical solution: a pressure bag connected to the annular bag is provided in the rotating shaft, an extrusion part is provided on the fixed seat, and the rotating shaft moves relative to the extrusion part so that the extrusion part squeezes the pressure bag to deform.

[0012] As a further description of the above technical solution: an annular plate portion is fixedly provided on the annular bag, and one end of the narrow opening of the annular plate portion is inclined toward the first end of the movable groove.

[0013] As a further description of the above technical solution: the movable seat is slidably arranged in the mounting seat, and a contact groove is provided at the end of the movable seat. The movable seat is driven to slide through the connecting plate to drive the first end of the welding gun unit to swing against the contact groove to reach the maximum limit of the welding gun angle.

[0014] As a further description of the above technical solution: it also includes a driving gear rod rotatably arranged in the mounting seat, and the driving gear rod is engaged with the linear tooth groove opened on the movable seat.

[0015] As a further description of the above technical solution: the inner wall of the movable groove of the guide wire seat is provided with a friction-reducing coating.

[0016] In the above technical solution, the present invention provides an intelligent shell welding system. When the weight of the welding wire itself is converted into resistance that prevents the welding wire from entering the welding gun unit, causing the wire pushing resistance to increase, the movable bead is used to radially compress and straighten the welding wire already fed into the welding gun unit, thereby alleviating the bending of the welding wire within the welding gun unit caused by the thrust of the wire feed wheel and the weight of the welding wire itself, thereby reducing the occurrence of wire blockage within the welding gun unit. The movable bead can also evenly radially contact the welding wire and roll to convey and straighten the welding wire, further improving the stability and smoothness of the welding wire conveyance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall three-dimensional structure provided by an embodiment of the present invention; Figure 2 A schematic cross-sectional view of the overall structure provided by an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of the carrier mechanism, adjustment seat, mounting seat and welding gun unit provided in an embodiment of the present invention; Figure 4 A schematic cross-sectional view of the transverse structure of the carrier mechanism, adjustment seat, mounting seat and welding gun unit provided in an embodiment of the present invention; Figure 5 A schematic diagram of the exploded structure of the carrier mechanism, adjustment seat and mounting seat provided in an embodiment of the present invention; Figure 6 A schematic diagram of the exploded structure of the movable seat, wire guide seat, connecting plate and welding gun unit provided in an embodiment of the present invention; Figure 7 A schematic diagram of the exploded structure of the movable seat, guide wire seat, connecting plate and fixed seat provided in an embodiment of the present invention; Figure 8 A schematic diagram of the exploded structure of the movable seat, connecting plate and fixed seat provided in an embodiment of the present invention; Figure 9 A schematic diagram of a partial structure of a guide wire holder provided in an embodiment of the present invention; Figure 10 The embodiment of the present invention provides Figure 2 A magnified schematic diagram of the local structure at point A; Figure 11 The embodiment of the present invention provides Figure 2 A magnified schematic diagram of the local structure at point A in the middle.

[0019] Description of reference numerals: 1. Circular track; 21. Carrier mechanism; 22. Adjustment seat; 3. Mounting seat; 31. Wire feed wheel; 32. Mounting part; 4. Welding gun unit; 41. Conductive nozzle; 42. Feeding tube; 43. Connecting part; 51. Movable seat; 511. Mounting part; 512. Placement groove; 513. Plug-in groove; 514. Linear tooth groove; 515. Connecting groove; 516. Contact groove; 52. Driving gear rod; 53. Driving motor; 6. Wire guide seat; 61. Through hole; 611. Movable groove; 62. Rotating shaft; 63. Movable bead; 7. Connecting plate; 8. Fixed seat; 81. Pressing groove; 811. Extrusion part; 82. Plug-in part; 83. Through groove; 91. Flexible ring; 92. Annular capsule; 921. Annular plate part; 93. Pressing capsule. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] See also Figure 1-11 An embodiment of the present invention provides a technical solution: an intelligent shell welding system, comprising a circular track 1 and a carrier mechanism 21 movably arranged thereon, wherein a mounting seat 3 is movably provided on the carrier mechanism 21, and a welding gun unit 4 and a wire feeding wheel 31 are movably provided on the mounting seat 3, a wire guide seat 6 with a through hole 61 is coaxially arranged in the feed pipe 42 of the welding gun unit 4, and a movable groove 611 with movable beads 63 movably arranged inside the through hole 61 is provided in a circular array. The carrier mechanism 21 moves to the vertical lower side of the wire feeding wheel 31 to roll the movable beads 63 to the first end of the movable groove 611, and the movable beads 63 are close to the axis of the through hole 61.

[0022] Preferably, Figure 1 As shown, the carrier mechanism 21 is arranged movably along the circular track 1, and an adjustment seat 22 is provided on the carrier mechanism 21 so as to slide along the axis of the circular track 1, and the mounting seat 3 is provided on the adjustment seat 22 so as to slide radially along the circular track 1. During the actual welding process, the two shells to be welded are placed horizontally, and the circular track 1 is coaxially assembled on the outside of the shell. The position of the welding gun unit 4 can then be adjusted by sliding the adjustment seat 22 and the mounting seat 3, thereby adjusting the welding position and height of the shell. A wire feed wheel 31 is symmetrically provided on the mounting seat 3. The wire feed wheel 31 rotates synchronously in the opposite direction to push the welding wire into the feed pipe 42 of the welding gun unit 4 and causes the welding wire to move and extrude toward the conductive nozzle 41 of the welding gun unit 4. At the same time, the carrier mechanism 21 drives the welding gun unit 4 to move in a circular manner along the circular track 1, thereby enabling the welding gun unit 4 to perform annular welding between the shells to form an annular weld.

[0023] like Figure 2 As shown, the end of the movable groove 611 close to the mounting seat 3 is the first end, and the end of the movable groove 611 close to the conductive nozzle 41 is the second end. Since an angle is formed between the movable groove 611 and the axis of the through hole 61, and the movable bead 63 rolls in the movable groove 611, when the movable bead 63 rolls in the movable groove 611, the distance of the movable bead 63 relative to the axis of the through hole 61 changes.

[0024] When the shell to be welded is arranged horizontally, the circular track 1 can be divided into an upper half and a lower half from the maximum horizontal diameter value. When the carrier mechanism 21 is located in the upper half of the circular track 1, the wire feeding wheel 31 is located vertically above the welding gun unit 4. At this time, the thrust of the wire feeding wheel 31 and the gravity of the welding wire itself are used to feed the welding wire into the welding gun unit 4, and the movable bead 63 is rolled to the second end of the movable groove 611 by gravity, so that the movable bead 63 is located away from the axis of the through hole 61, so that the movable bead 63 is located in the through hole 61 to reduce the friction between the welding wire and the inner wall of the wire guide seat 6, thereby improving the smoothness of the welding wire transportation.

[0025] When the carrier mechanism 21 moves to the lower half of the circular track 1, the wire feed roller 31 on the mounting seat 3 is located vertically below the welding gun unit 4. At this time, the weight of the welding wire itself is converted into resistance that prevents the welding wire from entering the welding gun unit 4, which increases the resistance to pushing the welding wire. At this time, the movable beads 63 are rolled from the second end of the movable groove 611 to the first end under the action of gravity, that is, the movable beads 63 roll to the axis close to the through hole 61, so that several movable beads 63 can evenly roll against the circumference of the welding wire. Therefore, the movable beads 63 are used to achieve radial compression and straightening of the welding wire fed into the welding gun unit 4, thereby alleviating the bending of the welding wire in the welding gun unit 4 due to the thrust of the wire feed roller 31 and the weight of the welding wire itself, and reducing the occurrence of wire blockage in the welding gun unit 4. In addition, the movable beads 63 can even evenly roll against the welding wire in the radial direction to transport and straighten the welding wire, further improving the stability and smoothness of the welding wire transportation.

[0026] The circular track 1 , the carrier mechanism 21 , the adjustment seat 22 , the mounting seat 3 , the wire feed wheel 31 and the welding gun unit 4 are common technical knowledge known to those skilled in the art and are not described in detail here.

[0027] In the above technical solution, when the weight of the welding wire itself is converted into resistance that prevents the welding wire from entering the welding gun unit 4, thereby increasing the resistance to pushing the welding wire, the movable bead 63 is used to radially compress and straighten the welding wire already fed into the welding gun unit 4, thereby alleviating the bending of the welding wire in the welding gun unit 4 caused by the thrust of the wire feed wheel 31 and the weight of the welding wire itself, thereby reducing the occurrence of wire blockage in the welding gun unit 4. The movable bead 63 can also evenly radially contact the welding wire and roll to convey and straighten the welding wire, further improving the stability and smoothness of the welding wire conveyance.

[0028] In another embodiment provided by the present invention, it also includes a movable seat 51 and a connecting plate 7, the two ends of the connecting plate 7 are respectively connected to the movable seat 51 and the welding gun unit 4, and the movable seat 51 is movably arranged on the mounting seat 3 to drive the welding gun unit 4 to swing through the connecting plate 7 to adjust the welding gun angle.

[0029] Preferably, Figure 2 As shown, the welding gun unit 4 is rotatably mounted on the mounting portion 32 of the mounting seat 3, and a connecting portion 43 is fixedly provided on the end of the welding gun unit 4 close to the mounting seat 3, a connecting groove 515 is provided on the movable seat 51, and both ends of the connecting plate 7 are rotatably connected to the connecting portion 515 and the connecting groove 43 respectively.

[0030] When the two shells to be welded are assembled and fixed to the ground, the axis of the shells and the ground will inevitably have a level error. Since the circular track 1 also needs to be fixed to the ground, there will inevitably be a coaxial error between the circular track 1 and the shells to be welded. This can easily cause a perpendicularity error between the contact tip 41 of the welding gun unit 4 and the surface of the shell, which directly affects the shape of the weld pool formed during welding and the weld quality.

[0031] Therefore, during the actual assembly process, the movable seat 51 can be driven to move to drive the welding gun unit 4 to swing through the connecting plate 7, thereby correcting the verticality error between the conductive nozzle 41 of the welding gun unit 4 and the surface of the shell, thereby realizing the adjustment and correction of the welding gun angle, and avoiding the problem of poor welding quality caused by the error of the welding gun angle.

[0032] Among them, the movable seat 51 can be arranged in a swinging manner to drive the welding gun unit 4 to swing through the connecting plate 7, or the movable seat 51 can be arranged in a rotating manner to drive the welding gun unit 4 to swing through the connecting plate 7, or other arrangements known to those skilled in the art that can make the movable seat 51 movable to drive the welding gun unit 4 to swing through the connecting plate 7 can be replaced.

[0033] In another embodiment provided by the present invention, a flexible ring 91 is fixedly provided on the guide wire seat 6 in a linear array and abuts against the feed tube 42. The first end of the guide wire seat 6 is rotatably provided on the end of the movable seat 51. The movable seat 51 is driven to move to pull the guide wire seat 6 to move to reduce the angle between it and the axis of the feed tube 42.

[0034] Preferably, Figure 11 As shown, the end of the guide wire holder 6 close to the movable seat 51 is the first end, and a plurality of flexible rings 91 are provided around the guide wire holder 6. The guide wire holder 6 is coaxially arranged in the feed tube 42 so that the flexible rings 91 are located between the guide wire holder 6 and the feed tube 42 as a flexible buffer. The first end of the guide wire holder 6 is rotatably provided on the movable seat 51.

[0035] When the movable seat 51 is driven to move to drive the welding gun unit 4 to swing through the connecting plate 7, since the wire feed wheel 31 is installed on the mounting seat 3, the welding wire output by the wire feed wheel 31 will be bent to a certain extent when the welding gun unit 4 swings relative to the mounting seat 3.

[0036] When the movable seat 51 moves, it also synchronously pulls the wire guide seat 6 to move. The wire guide seat 6 rotates relative to the movable seat 51 at this time, and the wire guide seat 6 is also squeezed by the pulling force of the movable seat 51 to squeeze the flexible ring 91, so that the wire guide seat 6 will squeeze the flexible ring 91 during the swinging of the welding gun unit 4 so that it is no longer coaxial with the feed pipe 42, and the wire guide seat 6 can move to reduce the angle between it and the axis of the feed pipe 42, so that when the welding gun unit 4 swings to change the welding gun angle, the wire guide seat 6 can adaptively deflect the angle to reduce the degree of bending of the welding wire, and further straighten the welding wire after it is conveyed into the welding gun unit 4, thereby further improving the protection of the welding wire and avoiding blockage problems caused by excessive bending of the welding wire.

[0037] In another embodiment provided by the present invention, it further includes an annular capsule 92 fixedly arranged in an annular shape in the guide wire seat 6 to extend into the first end of the movable groove 611. The guide wire seat 6 rotates relative to the movable seat 51 to allow the annular capsule 92 to expand and bulge close to the axis of the hole 61.

[0038] Preferably, Figure 10 As shown, the annular bag 92 extends into the movable groove 611. The annular bag 92 acts as a flexible bag to play a buffering role when the movable ball 63 rolls in the movable groove 611, reducing the impact damage of the movable ball 63, thereby reducing the pressure damage of the surface of the movable ball 63 to the welding wire.

[0039] When the welding gun unit 4 adjusts the welding gun angle, the larger the angle between the welding gun angle and the horizontal plane, the greater the radial component of the welding wire's gravity, making the welding wire more susceptible to bending due to gravity.

[0040] When the movable seat 51 is driven to move, thereby causing the welding gun unit 4 to swing through the connecting plate 7 to adjust the welding gun angle, the wire guide seat 6 also rotates relative to the movable seat 51. At this time, the annular sac 92 is inflated and bulged to approach the axis of the through hole 61. Therefore, due to the volume expansion, the annular sac 92 changes the pressure on the movable bead 63 in the first end of the movable groove 611, thereby adjusting the radial pressure of the movable bead 63 on the welding wire in the through hole 61. When the welding gun unit 4 swings to adjust the welding gun angle, the annular sac 92 and the movable bead 63 are used to adaptively adjust the radial pressure on the welding wire according to the angle between the welding gun unit 4 and the horizontal plane, thereby further improving the protection of the welding wire and preventing the welding wire from bending and clogging due to the action of gravity.

[0041] In another embodiment provided by the present invention, a fixed seat 8 is further included. A rotating shaft 62 is provided on the guide wire seat 6 . The fixed seat 8 is inserted and slidably provided on the movable seat 51 to enclose the rotating shaft 62 on the movable seat 51 .

[0042] Preferably, Figure 7 As shown, a mounting portion 511 is symmetrically provided on the movable seat 51, and a placement groove 512 and an insertion groove 513 are provided on the mounting portion 511. A pressing groove 81 is provided on the fixed seat 8, and an insertion portion 82 is also provided on the fixed seat 8. The rotating shaft 62 of the guide wire seat 6 can be first placed in the placement groove 512, and then the insertion portion 82 of the fixed seat 8 is slidably inserted into the insertion groove 513, so that the pressing groove 81 and the placement groove 512 surround the circumference of the rotating shaft 62, thereby completing the installation of the guide wire seat 6. Due to the presence of the movable groove 611 and the movable bead 63 in the guide wire seat 6, when the wire feed wheel 31 pushes the welding wire into the through hole 61 and the feed tube 42 moves toward the conductive nozzle 41, the welding wire is radially resisted by the movable bead 63. Therefore, even if the welding wire is bent and blocked, the blockage location is likely to be located in the guide wire seat 6, so that the blockage location is far away from the conductive nozzle 41 to avoid the problem of difficult to clear welding wire blockage. Secondly, the wire guide seat 6 can be removed from the welding gun unit 4 by removing the fixing seat 8 to clear the blockage, thereby removing the blocked welding wire without disassembling the welding gun unit 4, which facilitates blockage treatment.

[0043] In another embodiment of the present invention, a pressure bag 93 connected to the annular bag 92 is provided in the rotating shaft 62, and an extrusion portion 811 is provided on the fixed seat 8. The rotating shaft 62 moves relative to the extrusion portion 811 so that the extrusion portion 811 squeezes the pressure bag 93 to deform.

[0044] Preferably, Figure 11As shown, the pressure bag 93 is connected to the annular bag 92. When the fixed seat 8 is installed on the movable seat 51, the extrusion portion 811 on the fixed seat 8 extends into the rotating shaft 62 to be located in the middle of the pressure bag 93. When the movable seat 51 is driven to move to drive the welding gun unit 4 to swing through the connecting plate 7 to adjust the welding gun angle, the guide wire seat 6 also rotates relative to the movable seat 51, and the pressure bag 93 in the rotating shaft 62 rotates relative to the extrusion portion 811, thereby causing the extrusion portion 811 to move to squeeze and contract the pressure bag 93, and the gas in the pressure bag 93 is squeezed into the annular bag 92, causing the annular bag 92 to inflate and bulge to approach the axis of the through hole 61.

[0045] Furthermore, a through slot 83 is formed on the fixing seat 8, and a threaded hole is formed on the mounting portion 511. A bolt can be passed through the through slot 83 to connect to the threaded hole. First, the screw head of the bolt can be made to contact the fixing seat 8 to complete the position limitation of the fixing seat 8. If the welding wire is blocked in the guide wire holder 6, the bolt can be rotated to no longer contact the fixing seat 8. At this time, the fixing seat 8 can be positioned on the mounting portion 511 and slide. When the welding wire is bent and blocked in the through hole 61, the welding wire is deformed and enters the movable groove 611 due to the pushing force. At this time, the two fixing seats 8 can be manually pressed relative to each other to repeatedly squeeze the pressure bag 93, thereby causing the annular bag 92 in the movable groove 611 to reciprocate and expand and contract to push the welding wire out of the movable groove 611. This can achieve the clearing and pushing out of the welding wire blocked in the through hole 61 without disassembling the guide wire holder 6, facilitating the rapid treatment of welding wire blockage. For welding wires with a small bend, the reciprocating expansion and contraction of the annular bag 92 can produce a certain straightening effect on the welding wire, so that the welding wire can continue to be used after manual correction through the fixing seat 8 and the annular bag 92.

[0046] In another embodiment provided by the present invention, an annular plate portion 921 is fixedly provided on the annular bag 92 , and a narrow end of the annular plate portion 921 is inclined toward the first end of the movable groove 611 .

[0047] Preferably, Figure 10 As shown, an annular plate portion 921 is provided on the annular bag 92. When the carrier mechanism 21 moves to the lower half of the circular track 1, the wire feeding wheel 31 on the mounting seat 3 is located on the vertical lower side of the welding gun unit 4. At this time, the movable bead 63 rolls from the second end of the movable groove 611 to the first end under the action of gravity. At this time, the annular plate portion 921 can further cushion the movable bead 63 and improve the protection of the movable bead 63.

[0048] In the actual welding process, the welding wire used can be divided into solid wire and flux-cored wire. Since the flux-cored wire is filled with a medicament, it is necessary to ensure the uniformity of the radial pressure on the flux-cored wire during the wire pushing process. If it is necessary to use a flux-cored wire for welding, the carrier mechanism 21 can be first moved to the lower half of the circular track 1, so that the wire feed wheel 31 is located vertically below the welding gun unit 4, and the movable ball 63 rolls over the annular bag 92 to abut against the first end of the movable groove 611. Then, the movable seat 51 is driven to move, thereby driving the welding gun unit 4 to swing through the connecting plate 7 to adjust the welding gun angle of the welding gun unit 4. At the same time, the guide wire seat 6 also rotates relative to the movable seat 51, and the pressure bag 93 in the rotating shaft 62 rotates relative to the extrusion part 811, so that the extrusion part 811 moves to squeeze and contract the pressure bag 93, and the annular bag 92 is inflated to limit the movable bead 63 to the end of the movable groove 611, and then the welding operation can be carried out. At this time, the movable bead 63 is always maintained at the end of the movable groove 611 to maintain uniform radial pressure on the flux-cored welding wire conveyed through the hole 61, so that the flux-cored welding wire can be conveyed without adding an additional radial pressure maintaining mechanism, thereby improving the applicability of the device.

[0049] In another embodiment provided by the present invention, the movable seat 51 is slidably arranged in the mounting seat 3, and a contact groove 516 is provided at the end of the movable seat 51. The movable seat 51 is driven to slide through the connecting plate 7 to drive the first end of the welding gun unit 4 to swing against the contact groove 516 to reach the maximum limit of the welding gun angle.

[0050] Preferably, Figure 2 As shown, the movable seat 51 is slidably arranged in the mounting seat 3, and the end of the movable seat 51 is provided with a contact groove 516. When the movable seat 51 is driven to slide and drive the welding gun unit 4 to swing through the connecting plate 7, when the welding gun unit 4 swings to the point where its first end abuts against the contact groove 516, the welding gun angle of the welding gun unit 4 reaches the maximum limit. If at this time the conductive nozzle 41 of the welding gun unit 4 still cannot be perpendicular to the surface of the shell to be welded, it means that the horizontal installation error of the shell on the ground is too large. Even if the welding operation is completed, the annular seam formed by the welding between the two shells is uneven in the annular direction due to gravity interference, which can easily lead to cracking of the welding annular seam. Therefore, when the welding gun angle of the welding gun unit 4 reaches the maximum limit and the conductive nozzle 41 still cannot be perpendicular to the surface of the shell to be welded, the shell to be welded needs to be re-mounted and fixed horizontally to reduce the horizontal installation error of the shell. Secondly, the contact groove 516 is used to set a welding gun angle limiter for the welding gun unit 4 on the mounting base 3 , thereby preventing the conductive tip 41 of the welding gun unit 4 from hitting the carrier mechanism 21 and being damaged.

[0051] In another embodiment provided by the present invention, the present invention further includes a driving gear rod 52 rotatably arranged in the mounting seat 3 , and the driving gear rod 52 is engaged with a linear tooth groove 514 provided on the movable seat 51 .

[0052] Preferably, a driving motor 53 is also fixedly provided in the mounting seat 3, and the output end of the driving motor 53 is fixedly connected to the driving gear rod 52. The driving motor 53 can be used to drive the driving gear rod 52 to rotate, and the driving gear rod 52 and the linear tooth groove 514 can be used to drive the movable seat 51 to slide in the mounting seat 3.

[0053] The driving motor 53 and its control program are common technical knowledge to those skilled in the art and are not described in detail here.

[0054] In another embodiment provided by the present invention, the inner wall of the movable groove 611 of the guide wire seat 6 is provided with a friction-reducing coating.

[0055] Preferably, the inner wall of the movable groove 611 is provided with a friction-reducing coating to prevent the welding wire from being blocked in the movable groove 611 .

[0056] Working principle: First, place the two shells to be welded horizontally, and coaxially assemble the circular track 1 on the outside of the shells. Then, the position of the welding gun unit 4 can be adjusted by sliding the adjustment seat 22 and the mounting seat 3, thereby adjusting the welding position and height of the shells. Then, the driving motor 53 is used to drive the driving gear rod 52 to rotate, and the driving gear rod 52 and the linear tooth groove 514 are used to drive the movable seat 51 to slide in the mounting seat 3. The movable seat 51 moves to drive the welding gun unit 4 to swing through the connecting plate 7, thereby correcting the verticality error between the conductive nozzle 41 of the welding gun unit 4 and the surface of the shell. When the movable seat 51 moves, it also synchronously pulls the wire guide seat 6 to move. The wire guide seat 6 rotates relative to the movable seat 51 at this time, and the wire guide seat 6 is also squeezed by the tension of the movable seat 51 to squeeze the flexible ring 91, so that the wire guide seat 6 can move to reduce the angle between the wire guide seat 6 and the axis of the feed pipe 42. The wire guide seat 6 also rotates relative to the movable seat 51, and the pressure bag 93 in the rotating shaft 62 rotates relative to the squeezing part 811, thereby causing the squeezing part 811 to move to squeeze and contract the pressure bag 93, and the gas in the pressure bag 93 is squeezed into the annular bag 92, so that the annular bag 92 is inflated and bulged to approach the axis of the through hole 61. Then, the wire feed wheel 31 rotates to push the welding wire into the through hole 61 and the feed tube 42 to approach the conductive nozzle 41 of the welding gun unit 4. When the carrier mechanism 21 is located in the upper half of the circular track 1, the wire feed wheel 31 is located vertically above the welding gun unit 4, and the movable ball 63 is rolled to the second end of the movable groove 611 by gravity, that is, the movable ball 63 is located at a position away from the axis of the through hole 61, so that the movable ball 63 is located in the through hole 61 to reduce the friction between the welding wire and the inner wall of the wire guide seat 6; When the carrier mechanism 21 moves to the lower half of the circular track 1, the wire feeding wheel 31 on the mounting seat 3 is located on the vertical lower side of the welding gun unit 4. At this time, the gravity of the welding wire itself is converted into resistance that prevents the welding wire from entering the welding gun unit 4, which increases the wire pushing resistance of the welding wire. At this time, the movable bead 63 rolls from the second end of the movable groove 611 to the first end under the action of gravity, that is, the movable bead 63 rolls to the axis close to the through hole 61, so that several movable beads 63 can evenly resist the circumference of the welding wire and roll. The movable bead 63 radially compresses and straightens the welding wire that has been fed into the welding gun unit 4.

[0057] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. An intelligent shell welding system, comprising a circular track (1) and a carrier mechanism (21) movably arranged thereon, wherein a mounting seat (3) is movably provided on the carrier mechanism (21), characterized in that: A welding gun unit (4) and a wire feeding wheel (31) are movably arranged on the mounting seat (3); a wire guide seat (6) with a through hole (61) is coaxially arranged in the feed pipe (42) of the welding gun unit (4); a movable groove (611) in which movable beads (63) are movably arranged is arranged in a circumferential array in the through hole (61); the carrier mechanism (21) moves to the side of the wire feeding wheel (31) located vertically below the welding gun unit (4) so ​​that the movable beads (63) roll to the first end of the movable groove (611), and the movable beads (63) move closer to the axis of the through hole (61).

2. The intelligent shell welding system according to claim 1, characterized in that: It also includes a movable seat (51) and a connecting plate (7), wherein both ends of the connecting plate (7) are respectively connected to the movable seat (51) and the welding gun unit (4), and the movable seat (51) is movably arranged on the mounting seat (3) to drive the welding gun unit (4) to swing through the connecting plate (7) to adjust the welding gun angle.

3. The intelligent shell welding system according to claim 2, characterized in that: A flexible ring (91) is fixedly provided on the guide wire seat (6) in a linear array and contacts the inside of the feed pipe (42). The first end of the guide wire seat (6) is rotatably provided on the end of the movable seat (51). The movable seat (51) is driven to move to pull the guide wire seat (6) to move so as to reduce the angle between the guide wire seat (6) and the axis of the feed pipe (42).

4. The intelligent shell welding system according to claim 3, characterized in that: It also includes an annular capsule (92) fixedly arranged in an annular shape in the guide wire seat (6) to extend into the first end of the movable groove (611), and the guide wire seat (6) rotates relative to the movable seat (51) to make the annular capsule (92) expand and bulge close to the axis of the hole (61).

5. The intelligent shell welding system according to claim 4, characterized in that: It also includes a fixed seat (8), a rotating shaft (62) is provided on the guide wire seat (6), and the fixed seat (8) is inserted and slidably provided on the movable seat (51) to enclose the rotating shaft (62) on the movable seat (51).

6. The intelligent shell welding system according to claim 5, characterized in that: A pressure bag (93) connected to the annular bag (92) is provided in the rotating shaft (62), and an extrusion portion (811) is provided on the fixed seat (8). The rotating shaft (62) moves relative to the extrusion portion (811) so that the extrusion portion (811) squeezes the pressure bag (93) to deform.

7. The intelligent shell welding system according to claim 6, characterized in that: An annular plate portion (921) is fixedly provided on the annular bag (92), and a narrow end of the annular plate portion (921) is inclined toward the first end of the movable groove (611).

8. The intelligent shell welding system according to claim 2, characterized in that: The movable seat (51) is slidably arranged in the mounting seat (3), and a contact groove (516) is provided at the end of the movable seat (51). The movable seat (51) is driven to slide through the connecting plate (7) to drive the first end of the welding gun unit (4) to swing against the contact groove (516) to reach the maximum limit of the welding gun angle.

9. The intelligent shell welding system according to claim 8, characterized in that: It also includes a driving gear rod (52) rotatably arranged in the mounting seat (3), wherein the driving gear rod (52) is engaged with a linear tooth groove (514) provided on the movable seat (51).

10. The intelligent shell welding system according to claim 1, characterized in that: The inner wall of the movable groove (611) of the guide wire seat (6) is provided with a friction-reducing coating.

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