A fully automatic submerged arc welding machine

Abstract

This invention relates to the field of submerged arc welding equipment technology and discloses a fully automatic submerged arc welding machine, including a rotating frame, a moving carriage, a C-shaped frame, a welding mechanism, a feeding mechanism, and a suction device. The C-shaped frame is mounted on the moving carriage, and an adjustment table is provided at the upper end of the C-shaped frame. A frame is provided on the adjustment table, and the welding components of the welding mechanism are mounted on the frame. When performing double-sided straight seam welding on the workpiece, a straight plate protective material mechanism is installed at the end of the C-shaped frame. The straight plate protective material mechanism includes a straight plate protective material mechanism installed at the end of the C-shaped frame, which symmetrically clamps the weld seam of the workpiece. When performing circumferential double-sided welding on the workpiece, an annular plate protective material mechanism is installed on the inner and outer sides of the joint of the two workpieces. This invention realizes fully automatic double-sided welding operation, effectively solves the core problems such as complicated process, rapid loss of molten pool temperature, loss of weld liquid, and poor formation, and greatly improves welding efficiency and weld formation quality. It is suitable for double-sided welding scenarios of straight seam and circumferential seam.

Description

Technical Field

[0001] This invention relates to the field of submerged arc welding equipment technology, specifically to a fully automatic submerged arc welding machine. Background Technology

[0002] Submerged arc welding is a welding method that uses an electric arc burning under a layer of flux. It has the characteristics of high welding efficiency and relatively stable weld quality, and is widely used in the field of thick plate welding, especially in pressure vessel welding. As a key piece of equipment that withstands high pressure and contains flammable, explosive or corrosive media, pressure vessels have extremely strict requirements for the sealing, strength and forming quality of the weld. Defects such as incomplete penetration, lack of fusion, slag inclusion, and porosity are not allowed, otherwise it may cause safety accidents.

[0003] For pressure vessels and other thick plate weldments with large thicknesses, single-sided welding cannot meet the forming and strength requirements, and double-sided welding is required. Traditional processes require welding one side first, then flipping the weldment and cleaning the weld marks before welding the other side. This multi-step operation is complicated and leads to low welding efficiency. For example, in the manufacture of large pressure vessels, steel plates need to be bent into cylindrical shapes, then straight welds are made, and then multiple cylinders are welded together to form a closed container. Due to the thickness of the steel plates, the usual welding process requires grinding the weld seam to form a bevel before submerged arc welding. Because the angle control during bending is not very precise, when the weld seam is too wide, the welding material is prone to fall off the weld seam, and the molten pool is prone to collapse. The welding liquid is also prone to loss due to gravity, resulting in poor weld formation. Furthermore, the temperature of the molten pool drops too quickly during welding, which can easily lead to defects such as incomplete penetration, incomplete fusion, slag inclusions, and porosity. This makes it difficult to meet the safety requirements of pressure vessels and increases the quality risks and production difficulties of pressure vessel welding. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide a fully automatic submerged arc welding machine.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a fully automatic submerged arc welding machine, including a welding mechanism, which includes a welding machine, a wire spool, a wire feeding mechanism, and a welding torch. The equipment also includes a rotating frame, a moving carriage, a C-shaped frame, a feeding mechanism, and a suction device. The workpiece is placed on the rotating frame, the C-shaped frame is installed on the moving carriage, an adjustment table is provided at the upper end of the C-shaped frame, a frame is provided on the adjustment table, the wire feeding mechanism and the welding torch are installed on the frame, the welding machine is placed on the moving carriage, and the wire spool, the feeding mechanism, and the suction device are installed on the C-shaped frame.

[0006] When performing double-sided straight seam welding on the workpiece, a straight plate material protection mechanism is installed at the end of the C-shaped frame, which symmetrically clamps the weld seam of the workpiece; when performing double-sided circumferential seam welding on the workpiece, annular plate material protection mechanisms are installed on the inner and outer sides of the joint of the two workpieces, and a feeding mechanism in front of the welding torch conveys the welding material to the gap between the straight plate material protection mechanism and the annular plate material protection mechanism and the weld seam, while a suction device in the rear of the welding torch collects and recovers the residual material.

[0007] As an improvement: the straight plate material protection mechanism includes a first straight plate, a second straight plate, a moving plate, a cylinder, and a directional frame. Multiple directional frames are respectively installed at the upper and lower ends of the C-shaped frame. The cylinder is installed on the C-shaped frame and pushes the moving plate to move back and forth on the directional frame. The first straight plate and the second straight plate are both installed on the moving plate and are symmetrically arranged on both sides of the weld. The first straight plate has a straight seam that facilitates welding and material feeding.

[0008] As an improvement: Both the first and second straight guard plates are provided with a second screw rod, which passes through the through hole at the end of the movable plate and is fixed in position by a nut. The movable plate is provided with a slider, and the bottom of the movable plate is provided with a guide platform that slides with the slider. The end of the movable plate is provided with a vertical rod, and the cylinder output end is connected to the vertical rod.

[0009] As an improvement: the annular plate material protection mechanism includes an outer ring plate and an inner ring plate. Both the outer ring plate and the inner ring plate are made of multiple pieces spliced ​​into a ring and spot-welded to the workpiece. The inner ring plate has a groove at the weld seam to facilitate welding and material feeding.

[0010] As an improvement: the feeding mechanism includes a solder box, a motor, a transmission shaft and a transmission sleeve. The solder box and the motor are located at the outer end of the C-shaped frame, the transmission sleeve is rotatably located inside the solder box, and a spiral platform is provided on the outer side of the transmission sleeve. The transmission shaft is connected to the output end of the motor and the transmission sleeve respectively.

[0011] As an improvement: the transmission shaft is provided with a gear one, and the end of the transmission sleeve extending out of the solder box through hole is provided with a gear two that meshes with the gear one. The bottom shell of the solder box is provided with a turntable that is rotatably connected to the transmission shaft. The turntable is provided with an eccentric rod. A sliding shaft is provided at the through hole inside the gear two. One end of the sliding shaft is provided with a straight groove platform. The eccentric rod is slidably provided in the straight groove of the straight groove platform. A thin rod is provided inside the transmission sleeve. One end of the thin rod is connected to the sliding shaft, and the other end extends into the feeding pipe connected to the solder box. The thin rod is provided with multiple branches.

[0012] As an improvement: the frame is slidably mounted on one end of the adjustment table, and a threaded rod is rotatably mounted on the adjustment table. The top of the threaded rod is equipped with a handle, and the frame is equipped with a threaded hole that mates with the threaded rod.

[0013] As an improvement: the feeding mechanism and the suction device are respectively provided with a feeding head and a negative pressure head at the end of the connecting pipe. When welding straight seams on both sides, the feeding head is fixed on the C-shaped frame and the negative pressure head is fixed on the moving plate; when welding circumferential seams on both sides, the feeding head and the negative pressure head are both fixed on both sides of the frame.

[0014] The beneficial effects of this invention compared to existing technologies are as follows: Addressing the pain points of traditional double-sided submerged arc welding of thick weldments, this invention achieves fully automated double-sided welding operations through the collaborative innovative design of the material protection mechanism, feeding mechanism, and welding mechanism. It effectively solves core problems such as complex processes, rapid loss of molten pool temperature, weld melt loss, and poor weld formation, significantly improving welding efficiency and weld quality, reducing manual intervention, and lowering operational difficulty. It is suitable for double-sided welding scenarios involving straight seams and circumferential seams. Specifically:

[0015] 1. The material protection mechanism is adapted to the welding requirements of straight seam and circumferential seam. The straight plate material protection mechanism and the ring plate material protection mechanism form a semi-enclosed forming space by symmetrically clamping the weld seam. This effectively prevents the weld liquid from flowing away due to gravity and slows down the loss of molten pool temperature, thereby improving the fluidity of the molten pool. This fundamentally solves the defects such as incomplete penetration and slag inclusion in the double-sided welding of thick weldments.

[0016] 2. The improved feeding mechanism adopts a dual-drive method combining spiral pushing and vibration guidance. The spiral table structure realizes uniform and quantitative feeding of solder, and the high-speed reciprocating thin rod with branch blades effectively breaks the solder accumulation and blockage. It accurately matches the welding speed and weld size to ensure that the solder is fully filled and evenly distributed.

[0017] 3. The overall automated collaborative design greatly simplifies the welding process. The moving vehicle, rotating frame and various mechanisms work together in a coordinated manner, eliminating the need for manual flipping and frequent adjustments, significantly reducing human intervention and greatly improving welding efficiency compared to traditional processes. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the straight seam welding mode of the present invention.

[0019] Figure 2 This is a schematic diagram of the main structure of the straight seam welding mode of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the mobile vehicle and welding mechanism of the present invention.

[0021] Figure 4 This is a schematic diagram of the welding mechanism of the present invention.

[0022] Figure 5 This is a schematic diagram of the feeding mechanism of the present invention.

[0023] Figure 6 This is a schematic diagram of the internal structure of the feeding mechanism of the present invention.

[0024] Figure 7 This is a schematic diagram of the straight plate material protection mechanism of the present invention.

[0025] Figure 8 This is an exploded view of the straight plate material protection mechanism of the present invention.

[0026] Figure 9 This is a structural schematic diagram of the circumferential weld mode of the present invention.

[0027] Figure 10 This is a cross-sectional view of the circumferential welding mode of the present invention.

[0028] Figure 11 This is a schematic diagram of the main structure of the circumferential weld mode of the present invention.

[0029] Figure 12 This is a schematic diagram of the annular plate material protection mechanism of the present invention.

[0030] Figure 13 This is a schematic diagram of the welding state of the present invention.

[0031] As shown in the figure: 01. Welding part; 02. Molten pool; 03. Welding material; 1. Rotating frame; 2. Moving cart; 3. C-shaped frame; 4. Welding mechanism; 5. Feeding mechanism; 6. Straight plate material protection mechanism; 7. Ring plate material protection mechanism; 8. Feeder; 31. Adjusting table; 32. Frame; 33. Rotary handle; 34. Threaded rod one; 35. Dust cover; 41. Welding machine; 42. Welding wire spool; 43. Wire guide frame; 44. Wire feeding mechanism; 45. Welding torch; 51. Welding material box; 52. Motor; 521. Belt pulley one; 53. Transmission shaft; 531. Belt pulley two; 532. Gear one; 533. Umbrella 54. Turntable; 541. Bevel gear 2; 542. Eccentric rod; 55. Transmission sleeve; 551. Spiral platform; 552. Gear 2; 56. Sliding shaft; 561. Straight groove platform; 57. Thin rod; 571. Branch plate; 58. Feeding pipe; 59. Feeding head; 61. Straight guard plate 1; 611. Straight seam; 612. Screw 2; 62. Straight guard plate 2; 63. Moving plate; 631. Slider; 64. Vertical rod; 65. Cylinder; 66. Orientation frame; 661. Guide platform; 71. Outer ring guard plate; 72. Outer welded plate; 73. Inner ring guard plate; 74. Inner welded plate; 81. Negative pressure head. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 9 and attached Figure 10As shown, a fully automatic submerged arc welding machine includes a rotating frame 1, a moving carriage 2, a U-shaped frame 3, a welding mechanism 4, a feeding mechanism 5, and a suction device 8. The workpiece 01 is placed on the rotating frame 1, the U-shaped frame 3 is installed on the moving carriage 2, and an adjustment platform 31 is provided at the upper end of the U-shaped frame 3. A frame 32 is provided on the adjustment platform 31. The welding components of the welding mechanism 4 are installed on the frame 32. The feeding mechanism 5 and the suction device 8 are installed on the U-shaped frame 3. When performing double-sided straight seam welding on the workpiece 01, a straight plate material protection mechanism 6 is installed at the end of the U-shaped frame 3. The straight plate material protection mechanism 6 symmetrically clamps the weld seam of the workpiece 01. When performing circumferential double-sided welding on the workpiece 01, an annular plate material protection mechanism 7 is installed on the inner and outer sides of the joint of the two workpieces 01. The feeding mechanism 5 conveys the welding material 03 to the gap between the straight plate material protection mechanism 6 and the annular plate material protection mechanism 7 and the weld seam before welding. The suction device 8 collects and recovers the residual material after welding.

[0034] This fully automatic submerged arc welding machine primarily addresses the problems encountered in traditional submerged arc welding processes, such as complex procedures for double-sided welding of workpiece 01, rapid temperature loss in the molten pool 02 leading to incomplete penetration, lack of fusion, slag inclusions, and porosity, excessive weld width causing weld melt loss, poor weld formation, and low efficiency in double-sided welding. Specifically, it addresses the issue of unstable weld gaps when welding workpiece 01 of a certain thickness. Through the symmetrical clamping action of the straight plate material protection mechanism 6 and the annular plate material protection mechanism 7, it limits the position of the weld material 03 in the weld and slows down the temperature loss in the molten pool 02, thereby increasing the fluidity of the molten pool 02 and ensuring weld formation quality. The overall automated design significantly reduces manual intervention, simplifies the welding process, and improves welding efficiency.

[0035] Its working principle revolves around the different welding requirements of the workpiece 01, and achieves fully automatic double-sided welding operation through the coordinated cooperation of various mechanisms. The workpiece 01 is placed on the rotating frame 1, and the moving carriage 2 can drive the shaped frame 3 to move horizontally, thereby moving the workpiece 01 into the groove of the shaped frame 3. When performing straight seam double-sided welding, the straight plate material protection mechanism 6 installed at the end of the shaped frame 3 will symmetrically clamp the weld of the workpiece 01. The feeding mechanism 5 feeds material into the gap formed between the weld and the straight plate material protection mechanism 6. The straight plate material protection mechanism 6 limits the welding to prevent the weld 03 from falling from the weld, while protecting the temperature of the molten pool 02 during the welding process and providing a stable forming space for the weld 03. During the welding process, the moving carriage 2 can drive the shaped frame 3 to move, the welding mechanism 4 follows the shaped frame 3 to perform moving welding, and the straight plate material protection mechanism 6 follows the shaped frame 3 by moving intermittently.

[0036] When performing double-sided welding of the circumferential seam, the annular plate protective material mechanism 7 is pre-installed at the butt weld of the two weldment 01. The moving carriage 2 can drive the U-shaped frame 3 to move, so that the welding position of the welding mechanism 4 is aligned with the butt joint of the two weldment 01. Then, the rotating frame 1 drives the two weldment 01 to rotate synchronously at the same speed. The welding mechanism 4 welds the circumferential seam. During this process, the position of the welding mechanism 4 does not move. The annular plate protective material mechanism 7 has the same effect as the straight plate protective material mechanism 6. It can prevent the welding liquid from flowing out under the action of gravity and ensure the welding forming quality of the inner and outer sides of the circumferential seam, avoiding defects such as incomplete penetration and undercut.

[0037] During the welding process, the feeding mechanism 5 is located on the front side of the welding and accurately feeds the welding material 03 according to the welding speed and weld size. The welding material 03 is evenly filled into the gap formed by the straight plate material protection mechanism 6, the ring plate material protection mechanism 7 and the weld, ensuring that the welding material 03 is sufficient and evenly distributed. The suction device 8 is located on the rear side of the welding and collects and recovers the excess material and spatter on the surface of the weld in a timely manner after the welding is completed.

[0038] Combined with appendix Figure 3 and attached Figure 4 As shown, the welding mechanism 4 includes a welding machine 41, a welding wire spool 42, a wire guide frame 43, a wire feeding mechanism 44, and a welding torch 45. The welding machine 41 is placed on a moving cart 2 at the rear end of the C-shaped frame 3. The welding wire spool 42 and the wire guide frame 43 are fixed on the C-shaped frame 3. The wire feeding mechanism 44 and the welding torch 45 are installed on the frame 32. The welding wire on the wire guide frame 43 is fed to the welding torch 45 through the wire feeding mechanism 44. The frame 32 is slidably disposed at one end of the adjusting table 31. A threaded rod 34 is rotatably disposed on the adjusting table 31. A handle 33 is disposed on the top of the threaded rod 34. The frame 32 is provided with a threaded hole that mates with the threaded rod 34.

[0039] The welding machine 41 is placed on the mobile carriage 2 at the rear end of the frame 3, providing stable power support for the welding operation and ensuring the continuous and stable generation of the welding arc at the welding torch 45. The wire spool 42 is fixed on the frame 3 to store a sufficient amount of welding wire. The wire guide 43 serves as a guide and limiter to prevent the welding wire from tangling, deviating or wearing during the conveying process. The wire feeding mechanism 44, installed on the frame 32, delivers the welding wire guided by the wire guide 43 at a uniform speed and in a quantitative manner to the welding torch 45, which is also located on the frame 32, with precise power control, providing continuous and stable filler material for welding. Under the energy support of the welding machine 41, the welding torch 45 melts the welding wire delivered to the nozzle to form a high-temperature molten pool 02, thereby realizing the welding operation of the weld seam of the workpiece 01.

[0040] Because of the shape of the U-shaped frame 3 and the fact that the workpiece 01 is in an elevated state, the welding machine 41 and control system of the welding mechanism 4 need to be placed on the rear side of the U-shaped frame 3 to facilitate adjustment from the outside of the workpiece 01, preventing operators from climbing into the workpiece 01 to make adjustments during the welding process, thus improving operational convenience and safety.

[0041] The frame 32 is used to adjust the distance between the welding torch 45 and the weld. When adjustment is needed, the handle 33 at the top of the threaded rod 34 is rotated. The handle 33 drives the threaded rod 34 to rotate synchronously. The threaded engagement causes the frame 32 to slide up and down along the adjustment table 31, thereby driving the wire feeding mechanism 44 and the welding torch 45 mounted on the frame 32 to achieve fine-tuning of their positions, ensuring that the welding torch 45 can be accurately aligned with the target area for straight or circumferential welding.

[0042] Combined with appendix Figure 2 Appendix Figure 7 and attached Figure 8 As shown, the straight plate material protection mechanism 6 includes a first straight plate 61, a second straight plate 62, a moving plate 63, a cylinder 65, and a directional frame 66. Multiple directional frames 66 are respectively installed on the upper and lower ends of the C-shaped frame 3. The cylinder 65 is installed on the C-shaped frame 3 and pushes the moving plate 63 to move back and forth on the directional frame 66. The first straight plate 61 and the second straight plate 62 are both installed on the moving plate 63 and are symmetrically arranged on both sides of the weld. The first straight plate 61 is provided with a straight seam 611 to facilitate welding and material feeding.

[0043] Combined with appendix Figure 7 Appendix Figure 8 and attached Figure 13 As shown, both the first straight guard plate 61 and the second straight guard plate 62 are provided with screws 612. The screws 612 pass through the end through hole of the movable plate 63 and are fixed in position by nuts. The movable plate 63 is provided with a slider 631. The bottom of the movable plate 63 is provided with a guide platform 661 that slides with the slider 631. The end of the movable plate 63 is provided with a vertical rod 64. The output end of the cylinder 65 is connected to the vertical rod 64.

[0044] The improved design of the straight plate protection mechanism 6 specifically addresses the core problems of poor movement accuracy of the straight plate, the movement of the straight plate causing the internal weld 03 to move along with it, and the easy inclusion of slag in the molten pool 02. To address these issues, the outer sides of both straight plate 61 and straight plate 62 are designed with a gap between the outer edge of the plate and the weld seam. Figure 13 During welding, the solder 03 is overfilled around the weld. During welding, the molten pool 02 is formed at the weld of the workpiece 01. Since the straight guard plate 2 62 supports the solder 03 below the weld, the solder 03 here will restrict the downward flow of the molten pool 02, so that the molten pool 02 fills the weld and achieves the effect of double-sided welding in one welding. At the same time, under the protection of the straight guard plate 1 61, the straight guard plate 2 62 and the solder 03, the temperature loss rate of the molten pool 02 is reduced, which improves the forming quality.

[0045] During the movement of the welding mechanism 4 along the shaped frame 3, the cylinder 65 on the shaped frame 3 pushes the moving plate 63 to move along the guide frame 66. The slider 631 at the bottom of the moving plate 63 and the guide table 661 on the guide frame 66 form a sliding engagement, further constraining the movement direction of the moving plate 63 and ensuring its smooth and precise back-and-forth movement. The first straight guard plate 61 and the second straight guard plate 62 move synchronously with the moving plate 63. When the first straight guard plate 61 and the second straight guard plate 62 move, they remain relatively stationary with the workpiece 01 for a period of time. After the cylinder 65 reaches its maximum pushing distance, the cylinder 65 drives the moving plate 63 to move in the opposite direction, causing the first straight guard plate 61 and the second straight guard plate 62 to move rapidly backward (in the welding movement direction). This action is repeated. During this process, due to the overfilling of the solder 03, when the straight guard plate moves rapidly, the outer solder 03 will move a short distance with the straight guard plate, while the inner solder 03 is not affected by inertia, and the molten pool 02 under its protection will not be affected.

[0046] Straight guard plate 1 61 and straight guard plate 2 62 pass through the through hole at the end of the moving plate 63 via screw 2 612 and are then locked onto the moving plate 63 by nuts. During use, the position of screw 2 612 in the through hole can be adjusted by loosening the nuts according to the thickness of the workpiece 01 and the width of the weld, thereby adjusting the distance between the straight guard plate and the workpiece 01 so that they fit symmetrically on both sides of the weld, forming a semi-enclosed space for the forming of the solder 03 to prevent the loss of the solder. If the weld is too long, straight guard plate 1 61 and straight guard plate 2 62 can be directly spot welded to the weld. The welding mechanism 4 is set on the moving trolley to perform the welding operation.

[0047] Combined with appendix Figure 10 and attached Figure 12 As shown, the annular plate material protection mechanism 7 includes an outer ring guard plate 71 and an inner ring guard plate 73. Both the outer ring guard plate 71 and the inner ring guard plate 73 are made of multiple pieces spliced ​​into a ring. The outer ring guard plate 71 is connected to each other by outer welding pieces 72 or fasteners on the outer side. The inner ring guard plate 73 is fixed to the weldment 01 by spot welding of inner welding pieces 74 on the side side or connected to each other by fasteners. The inner ring guard plate 73 has a groove at the weld seam to facilitate welding and material feeding.

[0048] The annular plate material protection mechanism 7 has the same function as the straight plate material protection mechanism 6. The annular plate material protection mechanism 7 protects the outer side of the annular weld when the annular weld is being welded on both sides. After multiple outer ring guard plates 71 and inner ring guard plates 73 are installed on the weldment 01, the rotating frame 1 drives the weldment 01 to rotate. The feeding mechanism 5, the welding mechanism 4 and the suction device 8 respectively fill the weld space with welding material 03, perform welding and waste material recovery operations.

[0049] Combined with appendix Figure 3 Appendix Figure 5 and attached Figure 6As shown, the feeding mechanism 5 includes a solder box 51, a motor 52, a transmission shaft 53, and a transmission sleeve 55. The solder box 51 and the motor 52 are located at the outer end of the frame 3. The transmission shaft 53 is rotatably located in the bottom housing of the transmission shaft 53. The transmission sleeve 55 is rotatably located inside the solder box 51. The output end of the motor 52 is provided with a pulley 521. The transmission shaft 53 is provided with a pulley 531 and a gear 532. The pulley 521 and the pulley 531 are connected by a belt drive. The end of the transmission sleeve 55 that extends out of the through hole of the solder box 51 is provided with a gear 552 that meshes with the gear 532. The outside of the transmission sleeve 55 inside the solder box 51 is provided with a spiral platform 551.

[0050] The conventional feeding structure uses a simple funnel, relying on the automatic falling of solder 03. When the solder 03 is insufficient, it needs to be replenished manually. However, in this equipment, the shape design of the C-shaped frame 3 makes it difficult to replenish the solder in the solder box 51. Therefore, the feeding mechanism 5 was improved. In order to improve the convenience of replenishment, the solder box 51 was moved to the outer end of the C-shaped frame 3. This increased the conveying length and the conveying difficulty, which in turn led to problems such as uneven feeding of solder 03 during the feeding process, mismatch between the feeding speed and the welding speed, easy accumulation and blockage of solder 03, poor feeding continuity, and insufficient accuracy of quantity control.

[0051] To address the aforementioned issues, the solder 03 conveying method is improved. During feeding, the pulley 521 at the output end of motor 52 forms a transmission connection with the pulley 531 on the conveyor shaft 53 via a belt, transmitting power to the conveyor shaft 53 and causing it to rotate synchronously. When the conveyor shaft 53 rotates, the gear 532 fixed on it meshes with the gear 552 at one end of the transmission sleeve 55, further transmitting power to the transmission sleeve 55, causing the transmission sleeve 55 to rotate smoothly along its own axis. Due to the internal transmission of the solder box 51... The outer side of the moving sleeve 55 is provided with a spiral platform 551. When the transmission sleeve 55 rotates, the spiral platform 551 generates a continuous and uniform axial pushing force through the spiral structure, which pushes the solder 03 stored in the solder box 51 forward along the axial direction of the transmission sleeve 55 step by step. This allows the solder 03 to be smoothly and accurately transported through the pipeline to the gap formed between the straight plate protective material mechanism 6 or the ring plate protective material mechanism 7 on the front side of the welding and the weld, providing a continuous, uniform, and quantitative supply of solder 03 for the welding operation, ensuring that the solder 03 is fully filled and evenly distributed.

[0052] Combined with appendix Figure 5 and attached Figure 6As shown, a turntable 54 is rotatably mounted inside the bottom shell of the solder box 51. A bevel gear 541 is mounted on the bottom of the turntable 54. A bevel gear 533 that meshes with the bevel gear 541 is mounted on the conveyor shaft 53. An eccentric rod 542 is mounted on the turntable 54. A sliding shaft 56 is slidably mounted at the through hole inside the gear 552. A straight groove platform 561 is mounted at one end of the sliding shaft 56. The eccentric rod 542 is slidably mounted in the straight groove of the straight groove platform 561. A thin rod 57 is mounted inside the transmission sleeve 55. One end of the thin rod 57 is connected to the sliding shaft 56, and the other end extends into the feeding pipe 58 connected to the solder box 51. Multiple branch plates 571 are mounted on the thin rod 57.

[0053] Based on the original feeding mechanism 5, a high-speed vibrating thin rod 57 was added to further optimize the uniformity and anti-clogging performance of solder 03 conveying, and solve problems such as local accumulation and blockage of solder 03 in the feeding pipe and poor conveying of fine particles or sticky solder 03.

[0054] When motor 52 drives the transmission shaft 53 to rotate, the transmission shaft 53 forms a dual-path power output: on the one hand, through the meshing of gear one 532 and gear two 552, it drives the transmission sleeve 55 to rotate, causing the spiral platform 551 on the outside of the transmission sleeve 55 to push the solder 03 into the feeding tube 58; on the other hand, the bevel gear one 533 on the transmission shaft 53 meshes with the bevel gear two 541 at the bottom of the turntable 54, driving the turntable 54 to rotate synchronously. When the eccentric rod 542 on the turntable rotates with the turntable, it creates a straight groove platform 56 at the end of the sliding shaft 56. The slide shaft 56 slides in the straight slot of the gear 1, thereby driving the slide shaft 56 to move axially back and forth in the through hole inside the gear 2 552. The thin rod 57 at the end of the slide shaft 56 moves synchronously with the slide shaft 56 to guide the solder 03 in the feed tube 58 and avoid blockage. At the same time, as the multiple branches 571 on the thin rod 57 move forward, they push the solder 03. During the pushing process, the branches 571 open to increase the contact area with the solder 03. When the branches 571 move backward, they are retracted under the obstruction of the solder 03 to avoid obstructing the conveying of the solder 03.

[0055] Combined with appendix Figure 3 Appendix Figure 7 and attached Figure 11 As shown, the feeding mechanism 5 and the suction device 8 are respectively provided with a feeding head 59 and a negative pressure head 81 at the end of the connecting pipe. During double-sided straight seam welding, the feeding head 59 is fixed on the shaped frame 3 and stably conveys the welding material 03 while moving at a uniform speed with the shaped frame 3. The negative pressure head 81 is fixed on the moving plate 63 and collects the residual material when the moving plate 63 moves. During double-sided circumferential seam welding, both the feeding head 59 and the negative pressure head 81 are fixed on both sides of the frame 32. A dust cover 35 is provided above the frame 32 to prevent the welding material 03 above from falling and affecting the operation of the welding mechanism 4.

[0056] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A fully automatic submerged arc welding machine, comprising a welding mechanism (4), the welding mechanism (4) comprising a welding machine (41), a wire spool (42), a wire feeding mechanism (44), and a welding torch (45), characterized in that: The equipment also includes a rotating frame (1), a moving cart (2), a shaped frame (3), a feeding mechanism (5), and a suction device (8). The workpiece is placed on the rotating frame (1), the shaped frame (3) is installed on the moving cart (2), the upper end of the shaped frame (3) is provided with an adjustment table (31), the adjustment table (31) is provided with a frame (32), the wire feeding mechanism (44) and the welding gun (45) are installed on the frame (32), the welding machine (41) is placed on the moving cart (2), and the welding wire spool (42), the feeding mechanism (5), and the suction device (8) are installed on the shaped frame (3). When performing double-sided straight seam welding on the workpiece, a straight plate material protection mechanism (6) is installed at the end of the shaped frame (3), and the straight plate material protection mechanism (6) symmetrically clamps the weld seam of the workpiece; when performing double-sided circumferential seam welding on the workpiece, an annular plate material protection mechanism (7) is installed on the inner and outer sides of the joint of the two workpieces, and the feeding mechanism (5) conveys the welding material to the gap between the straight plate material protection mechanism (6) and the annular plate material protection mechanism (7) and the weld seam in front of the welding gun (45), and the suction device (8) collects and recovers the residual material in front of the welding gun (45).

2. The fully automatic submerged arc welding machine according to claim 1, characterized in that: The straight plate material protection mechanism (6) includes a first straight plate (61), a second straight plate (62), a moving plate (63), a cylinder (65), and a directional frame (66). Multiple directional frames (66) are respectively installed on the upper and lower ends of the C-shaped frame (3). The cylinder (65) is installed on the C-shaped frame (3) and pushes the moving plate (63) to move back and forth on the directional frame (66). The first straight plate (61) and the second straight plate (62) are both installed on the moving plate (63) and are symmetrically arranged on both sides of the weld. The first straight plate (61) has a straight seam (611) that facilitates welding and material feeding.

3. The fully automatic submerged arc welding machine according to claim 2, characterized in that: Both the first straight guard plate (61) and the second straight guard plate (62) are provided with a second screw (612). The second screw (612) passes through the end through hole of the moving plate (63) and is fixed in position by a nut. The moving plate (63) is provided with a slider (631). The bottom of the moving plate (63) is provided with a guide platform (661) that slides with the slider (631). The end of the moving plate (63) is provided with a vertical rod (64). The output end of the cylinder (65) is connected to the vertical rod (64).

4. The fully automatic submerged arc welding machine according to claim 1, characterized in that: The annular plate material protection mechanism (7) includes an outer ring plate (71) and an inner ring plate (73). Both the outer ring plate (71) and the inner ring plate (73) are made of multiple pieces spliced ​​into a ring and spot-welded to the workpiece. The inner ring plate (73) has a groove at the weld seam to facilitate welding and feeding.

5. The fully automatic submerged arc welding machine according to claim 1, characterized in that: The feeding mechanism (5) includes a solder box (51), a motor (52), a transmission shaft (53), and a transmission sleeve (55). The solder box (51) and the motor (52) are located at the outer end of the frame (3). The transmission sleeve (55) is rotatably located inside the solder box (51). A spiral platform (551) is provided on the outer side of the transmission sleeve (55). The transmission shaft (53) is connected to the output end of the motor (52) and the transmission sleeve (55) respectively.

6. The fully automatic submerged arc welding machine according to claim 5, characterized in that: The transmission shaft (53) is provided with a gear 1 (532). The transmission sleeve (55) extends out of the through hole of the solder box (51) and is provided with a gear 2 (552) that meshes with the gear 1 (532). The bottom shell of the solder box (51) is provided with a turntable (54) that is connected to the transmission shaft (53). The turntable (54) is provided with an eccentric rod (542). The inner through hole of the gear 2 (552) is provided with a sliding shaft (56). One end of the sliding shaft (56) is provided with a straight groove platform (561). The eccentric rod (542) is slidably provided in the straight groove of the straight groove platform (561). The inner side of the transmission sleeve (55) is provided with a thin rod (57). One end of the thin rod (57) is connected to the sliding shaft (56), and the other end extends into the feeding pipe (58) connected to the solder box (51). The thin rod (57) is provided with multiple branches (571).

7. The fully automatic submerged arc welding machine according to claim 1, characterized in that: The frame (32) is slidably disposed at one end of the adjustment table (31). A threaded rod (34) is rotatably disposed on the adjustment table (31). A handle (33) is disposed on the top of the threaded rod (34). A threaded hole that mates with the threaded rod (34) is disposed on the frame (32).

8. A fully automatic submerged arc welding machine according to claim 2, characterized in that: The feeding mechanism (5) and the suction device (8) are respectively provided with a feeding head (59) and a negative pressure head (81) at the end of the connecting pipe. When welding straight seams on both sides, the feeding head (59) is fixed on the shaped frame (3) and the negative pressure head (81) is fixed on the moving plate (63). When welding circumferential seams on both sides, the feeding head (59) and the negative pressure head (81) are both fixed on both sides of the frame (32).

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