An internal welding machine welding unit

Abstract

The application provides a welding wire insulation mechanism and an internal welding machine welding unit, and belongs to the technical field of steel pipeline welding, which comprises an annular cylinder, an oval hole is formed in the side of the annular cylinder, a mounting seat one is fixedly arranged on the side of the annular cylinder, the mounting seat one is arranged opposite to the oval hole, a crossbeam is fixedly arranged on the mounting seat one, square holes are formed in the two sides of the crossbeam, the square holes penetrate through the side wall of the annular cylinder, square limiting clamps are formed in the two sides of the mounting seat one, and a shaft shoulder is formed in the side of the mounting seat one, away from the crossbeam. The insulation mechanism can cover the welding wire reel, plays an isolation role on the welding wire, and forms effective insulation between the welding wire and the shell. The internal welding machine welding unit can effectively avoid the scattering of the welding wire in the wire feeding process, can more accurately adjust the wire feeding, and can be applied to different working environments.

Description

Technical Field

[0001] This invention relates to the field of steel pipe welding technology, specifically to an internal welding machine welding unit. Background Technology

[0002] Currently, the fully automated welding process technology of internal welding machine root welding used in long-distance pipelines has been widely promoted and applied in pipeline engineering. The unique multi-welding unit welding system of this technology (taking D1219mm pipeline as an example, it has 8 welding units) has a single-port root welding efficiency of about 90s, and has the characteristics of high welding efficiency and good weld consistency.

[0003] Based on engineering application experience, when welding pipes with an internal welding machine, the welding wire inside the welding unit system often experiences issues such as loose wires, broken wires, skipped wires, and tangled wires. This can cause short circuits within the welding unit system. After short-circuiting inside the welding unit, the welding wire becomes loose and comes into contact with the shell, which can easily cause burn damage to the welding control system and actuators, resulting in high equipment maintenance costs and difficulty in maintenance.

[0004] Currently, conventional internal welding machines on the market are limited by internal space, and most of them install an insulating baffle at the rear of the welding wire spool. The baffle is supported by spring force to prevent the welding wire from contacting the shell in case of wire breakage or scattering. This only meets the function of blocking on one side and cannot avoid internal short circuits caused by wire scattering, breakage, or skipping. The insulation effect is poor, the maintenance cost is high, and the maintenance is difficult. Moreover, the baffle and the welding wire spool are in frictional contact. The resistance generated by the friction can easily cause poor wire feeding, unstable welding current, and defects in the root circumferential weld (such as incomplete weld, lack of fusion, bevel penetration, dense porosity, etc.). This results in a high defect rate in the root circumferential weld, which seriously affects the first-pass welding qualification rate of the root weld.

[0005] Therefore, we propose an internal welding machine welding unit. Summary of the Invention

[0006] The purpose of this invention is to provide an internal welding machine welding unit to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This invention provides a welding wire insulation mechanism, including an annular cylinder. An elliptical hole is provided on the side of the annular cylinder. A mounting seat is fixedly provided on the side of the annular cylinder. The mounting seat is opposite to the elliptical hole. A crossbeam is fixedly provided on the mounting seat. Square holes are provided on both sides of the crossbeam. The square holes penetrate the side wall of the annular cylinder. Square limiting clips are provided on both sides of the mounting seat. A shoulder is provided on the side of the mounting seat away from the crossbeam.

[0009] Furthermore, the elliptical hole is provided with rolled-edge reinforcing ribs at the edge of the outer surface of the annular cylinder.

[0010] Furthermore, the welding wire insulation mechanism is made of insulating material through injection molding and core-pulling / molding processes.

[0011] This invention also provides an internal welding machine welding unit, including a housing and the aforementioned welding wire insulation mechanism. An installation plate is provided inside the housing. One end of the installation plate is fixedly connected to the housing, and a connecting plate is fixedly connected to the other end of the installation plate. The end of the connecting plate away from the installation plate is fixedly connected to the housing. The space enclosed by the installation plate, the connecting plate, and the housing forms a welding wire cavity. A welding wire shaft is provided in the welding wire cavity. One end of the welding wire shaft is slidably engaged with the installation plate, and the other end is slidably engaged with the housing. A welding wire spool is engaged on the welding wire shaft. The welding wire insulation mechanism is sleeved on the welding wire spool. A wire feeding mechanism is fixedly installed at the end of the installation plate connected to the connecting plate. A rotating frame is rotatably provided at one end of the housing, and a welding assembly is provided on the rotating frame. A driving mechanism is provided inside the housing, and the driving mechanism is fixedly connected to the rotating frame.

[0012] Furthermore, the welding wire spool includes an outer sleeve, an inner sleeve, and a bearing. The outer sleeve and the inner sleeve are rotatably connected by the bearing. The inner sleeve contains a sliding spring with spherical shaft ends at both ends. One end of the spherical shaft end is a flange, and the other end is a spherical surface. The flange contacts the sliding spring. The mounting plate and the housing are both provided with sliding grooves. The bottom of the sliding groove is provided with a snap-fit ​​groove. The spherical surface is slidably connected to the sliding groove and engages with the snap-fit ​​groove. The inner sleeve has flange seats at both ends, which are fitted onto the spherical shaft ends. The outer sleeve has a mounting hole, and a damping component is provided in the mounting hole. The top of the damping component is in frictional contact with the welding wire spool, and the bottom of the damping component is in frictional contact with the inner sleeve.

[0013] Furthermore, the damping assembly includes an upper damping block, a damping spring, and a lower damping block. The upper damping block is connected to one end of the damping spring, and the lower damping block is connected to the other end of the damping spring. The side of the upper damping block away from the damping spring is in frictional contact with the welding wire spool, and the side of the lower damping block away from the damping spring is in frictional contact with the inner sleeve.

[0014] Furthermore, the wire feeding mechanism includes a drive motor and a second mounting base. The drive motor is fixedly mounted on the mounting plate via the second mounting base. The output end of the drive motor is connected to a first wire feeding wheel. The first wire feeding wheel has a wire feeding groove on its surface for feeding welding wire. A first fixing component is rotatably mounted on the second mounting base. A rotating shaft is mounted on the first fixing component, and the second wire feeding wheel is mounted on the rotating shaft. The surface of the second wire feeding wheel rolls in contact with the surface of the first wire feeding wheel, pressing the welding wire tightly into the wire feeding groove. A first wire feeding tube and a second wire feeding tube are fixedly mounted on the second mounting base. The inlet and outlet of wire feeding tube one and the inlet and outlet of wire feeding tube two are arranged sequentially along the wire feeding direction. The outlet of wire feeding tube one is close to the contact point between wire feeding wheel one and wire feeding wheel two, and the inlet of wire feeding tube two is close to the contact point between wire feeding wheel one and wire feeding wheel two. The center of the outlet of wire feeding tube one and the center of the inlet of wire feeding tube two are both aligned with the center line of the wire feeding groove. A spring piece is provided on the fixing component one, and a fixing post is engaged at the end of the spring piece away from the fixing component one. The fixing component two is fixedly installed on the mounting base two, and the fixing post is fixedly set on the fixing component two.

[0015] Furthermore, the welding assembly includes an electric push rod, which is fixedly mounted on a rotating frame. The output end of the electric push rod is connected to a fixed base, which is movably connected to the rotating frame. A wire guide and a welding torch are fixedly mounted on the fixed base.

[0016] Furthermore, a support is fixedly installed on the rotating frame, and a roller is rotatably mounted on the support. The roller is in rolling connection with the fixed base. The rotating frame is provided with a second mounting hole, and a linear bearing is provided in the second mounting hole. A linear guide rod is installed in the linear bearing, and both ends of the linear guide rod are fixedly connected to the fixed base.

[0017] Furthermore, the driving mechanism includes a cylinder, the output end of which is rotatably connected to a connecting shaft, and the connecting shaft is fixedly connected to the rotating frame.

[0018] Compared with the prior art, the present invention has the following technical effects:

[0019] 1. In this invention, the space between the internal cavities of the welding unit is utilized. Within the confined space, an insulating wire insulation mechanism made of insulating material is used. This mechanism employs a ring-shaped encapsulation structure design, using the principle of overall encapsulation insulation to cover the welding wire spool, isolating the welding wire and forming effective insulation between the welding wire and the shell. This avoids factors such as wire scattering, short circuits, welding interruptions, and voltage instability that may occur within the welding unit during operation. This improves the stability of the welding system and the first-pass yield rate. Simultaneously, it enhances the insulation within the welding unit, achieving overall protection and reducing the failure rate during equipment operation.

[0020] 2. In this invention, by setting an upper damping block, a damping spring and a lower damping block, the upper damping block is in frictional contact with the welding wire spool, and the lower damping block is in frictional contact with the inner sleeve. By increasing the friction between the welding wire spool and the inner sleeve, the welding wire can be effectively prevented from becoming scattered during the wire feeding process.

[0021] 3. In this invention, the wire feeding mechanism achieves a firm fixation of the welding wire through the second wire feeding wheel; the spring itself has elastic deformation capability, and the second wire feeding wheel can adaptively approach the first wire feeding wheel through the spring. When feeding different types of welding wire, the wire feeding can be more precisely adjusted through the cooperation of the spring, the first fixing part, the second fixing part and the fixing column.

[0022] 4. In this invention, both the wire guide tip and the welding torch are fixedly mounted on a fixed base. The position of the fixed base is finely adjusted by pushing an electric push rod, thereby enabling the adjustment of the positions of the wire guide tip and the welding torch according to the actual situation, making it more adaptable to applications in different working environments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the welding wire insulation mechanism according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the welding wire insulation mechanism according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the overall structure of the welding unit of the internal welding machine in an embodiment of the present invention. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the overall structure of the welding unit of the internal welding machine in an embodiment of the present invention. Figure 2 ;

[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0028] Figure 6 This is a schematic diagram of the connection between the welding wire shaft and the welding wire spool according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the welding wire shaft according to an embodiment of the present invention. Figure 1 ;

[0030] Figure 8 This is a schematic diagram of the structure of the welding wire shaft according to an embodiment of the present invention. Figure 2 ;

[0031] Figure 9 This is a schematic diagram of the damping component according to an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the wire feeding mechanism according to an embodiment of the present invention. Figure 1 ;

[0033] Figure 11 This is a schematic diagram of the wire feeding mechanism according to an embodiment of the present invention. Figure 2 ;

[0034] Figure 12 This is a schematic diagram of the wire feeding mechanism according to an embodiment of the present invention. Figure 3 ;

[0035] Figure 13 This is a schematic diagram of the structure of a wire feeding wheel according to an embodiment of the present invention;

[0036] Figure 14 This is a schematic diagram of the welding assembly according to an embodiment of the present invention. Figure 1 ;

[0037] Figure 15 This is a schematic diagram of the welding assembly according to an embodiment of the present invention. Figure 2 ;

[0038] Figure 16 This is a schematic diagram of the welding assembly according to an embodiment of the present invention. Figure 3 ;

[0039] Figure 17 This is a schematic diagram of the rotating frame according to an embodiment of the present invention;

[0040] Figure 18 This is a schematic diagram of the structure of the fixing base according to an embodiment of the present invention;

[0041] Figure 19 This is a schematic diagram of the housing structure according to an embodiment of the present invention.

[0042] In the diagram: 1. Welding wire insulation mechanism; 11. Annular cylinder; 12. Elliptical hole; 13. Mounting seat one; 14. Crossbeam; 15. Square hole; 16. Square limit clip; 17. Shoulder; 18. Rolled edge reinforcing rib; 2. Housing; 3. Mounting plate; 4. Connecting plate; 5. Welding wire cavity; 6. Welding wire shaft; 61. Outer sleeve; 62. Inner sleeve; 63. Bearing one; 64. Axle compression spring; 65. Spherical shaft end; 651. Flange; 652. Spherical part; 66. Flange seat; 67. Mounting hole one; 68. Damping assembly; 681. Upper damping block; 682. Damping compression spring; 683. Lower damping block; 7. Welding wire reel; 8. Wire feeding mechanism; 81. 81. Drive motor; 82. Mounting base II; 83. Wire feed wheel I; 84. Wire feed groove; 85. Fixing component I; 86. Rotating shaft; 87. Wire feed wheel II; 88. Wire feed tube I; 89. Wire feed tube II; 90. Spring; 91. Fixing column; 92. Fixing component II; 93. Bearing II; 94. Rotating frame; 10. Welding assembly; 101. Electric push rod; 102. Fixing base; 103. Wire guide nozzle; 104. Welding torch; 105. Support; 106. Roller; 107. Mounting hole II; 108. Linear bearing; 109. Linear guide rod; 19. Cylinder; 20. Sliding groove; 21. Snap-fit ​​groove; 22. Rotating shaft; 23. Connecting component; 24. Base. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present invention.

[0044] In this article, terms such as "left," "right," "up," "down," "front," and "back" are established based on the positional relationships shown in the attached drawings. Depending on the attached drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection.

[0045] Please see Figures 1 to 2 This embodiment provides a welding wire insulation mechanism 1. The welding wire insulation mechanism 1 is made of insulating material and manufactured by injection molding and core-pulling molding processes. The welding wire insulation mechanism 1 includes an annular cylinder 11, which is used to cover the welding wire spool 7. An elliptical hole 12 is provided on the side of the annular cylinder 11, which is used to allow the welding wire on the welding wire spool 7 to extend out. The edge of the elliptical hole 12 located on the outer surface of the annular cylinder 11 is rolled outward to form a rolled edge reinforcing rib 18, which meets the requirements of welding wire insulation and body strength.

[0046] Specifically, a mounting base 13 is fixedly provided on the side of the annular cylinder 11. The mounting base 13 is positioned opposite the elliptical hole 12. A crossbeam 14 is fixedly provided on the mounting base 13. Square holes 15 are opened on both sides of the crossbeam 14, penetrating the side wall of the annular cylinder 11. After the welding wire insulation mechanism 1 covers the welding wire spool 7, the crossbeam 14 and the square holes 15 facilitate the worker to insert or remove the welding wire insulation mechanism 1 into the welding wire cavity 5 of the welding unit of the inner welding machine. Square limiting clips 16 are opened on both sides of the mounting base 13. A shoulder 17 is opened on the side of the mounting base 13 away from the crossbeam 14. The welding wire insulation mechanism 1 is engaged in the welding wire cavity 5 through the square limiting clips 16 and the shoulder 17.

[0047] Please see Figures 3 to 19 This embodiment also provides an internal welding machine welding unit, which is an argon arc welding unit. The internal welding machine welding unit includes a housing 2 and the welding wire insulation mechanism 1 described above. A base 24 is rotatably provided on the housing 2, and the internal welding machine welding unit is installed on the internal welding machine through the base 24. A mounting plate 3 is provided inside the housing 2. One end of the mounting plate 3 is fixedly connected to the housing 2, and a connecting plate 4 is fixedly connected to the other end of the mounting plate 3. The end of the connecting plate 4 away from the mounting plate 3 is fixedly connected to the housing 2. The space area enclosed by the mounting plate 3, the connecting plate 4, and the housing 2 forms a welding wire cavity 5.

[0048] Specifically, a welding wire spool 6 is installed in the welding wire cavity 5. One end of the welding wire spool 6 is slidably engaged with the mounting plate 3, and the other end is slidably engaged with the housing 2. A welding wire spool 7 is engaged with the welding wire spool 6, and welding wire is installed on the welding wire spool 7. A welding wire insulation mechanism 1 is sleeved on the welding wire spool 7, covering the welding wire spool 7 and isolating the welding wire on the welding wire spool 7, forming effective insulation between the welding wire and the housing 2. One end of the welding wire extends from the elliptical hole 12 of the welding wire insulation mechanism 1 toward the wire feeding mechanism 8. The wire feeding mechanism 8 is fixedly installed at the end of the mounting plate 3 connected to the connecting plate 4. The wire feeding mechanism 8 can deliver the welding wire to the wire guide nozzle 103, which is convenient for welding with the welding torch 104. A rotating frame 9 is rotatably provided at one end of the housing 2. The rotating frame 9 is rotatably connected to the rotating shaft 22, and the rotating frame 9 can rotate on the housing 2 through the rotating shaft 22. The rotating frame 9 is equipped with a welding assembly 10, which is used for welding the workpiece.

[0049] Specifically, a drive mechanism is provided inside the housing 2, and the drive mechanism is fixedly connected to the rotating frame 9. The drive mechanism can drive the rotating frame 9 to rotate, thereby adjusting the position of the welding assembly 10. In this embodiment, the drive mechanism includes a cylinder 19, and a connector 23 is rotatably connected to the output end of the cylinder 19. The connector 23 is fixedly connected to the rotating frame 9. During operation, the piston rod of the cylinder 19 moves. Since the piston rod is rotatably connected to the connector 23, the connector 23 will rotate relative to the piston rod and move together with the piston rod. The connector 23 drives the rotating frame 9 to move. The rotating frame 9 rotates on the housing 2 via the rotating shaft 22, thereby driving the welding assembly 10 to move.

[0050] Specifically, the welding wire spool 6 includes an outer sleeve 61, an inner sleeve 62, and a bearing 63. The outer sleeve 61 and the inner sleeve 62 are rotatably connected by the bearing 63. A welding wire spool 7 is held in place on the outer sleeve 61, allowing the outer sleeve 61 to drive the welding wire spool 7 to rotate relative to the inner sleeve 62. The inner sleeve 62 is equipped with a sliding shaft compression spring 64, which has spherical shaft ends 65 at both ends. The sliding shaft compression spring 64 exerts an elastic force on the spherical shaft ends 65. One end of the spherical shaft end 65 is a flange portion 651, and the other end is a spherical portion 652. The flange portion 651 contacts the axle compression spring 64. Both the mounting plate 3 and the housing 2 have sliding grooves 20, and the bottom of the sliding groove 20 has a locking groove 21. The spherical portion 652 is slidably connected to the sliding groove 20 and engages with the locking groove 21. The spherical portion 652 can slide along the sliding groove 20. When it moves to the locking groove 21, under the elastic force of the axle compression spring 64, the spherical portion 652 will engage with the locking groove 21, allowing the welding wire shaft 6 to be installed in the welding wire cavity 5. The inner sleeve 62 has flange seats 66 at both ends, which are fitted onto the spherical shaft end 65.

[0051] Specifically, the outer sleeve 61 has a mounting hole 67, and a damping assembly 68 is installed inside the mounting hole 67. The top of the damping assembly 68 is in frictional contact with the welding wire spool 7, and the bottom of the damping assembly 68 is in frictional contact with the inner sleeve 62. The damping assembly 68 includes an upper damping block 681, a damping spring 682, and a lower damping block 683. The upper damping block 681 is connected to one end of the damping spring 682, and the lower damping block 683 is connected to the other end of the damping spring 682. The side of the upper damping block 681 away from the damping spring 682 is in frictional contact with the welding wire spool 7, and the side of the lower damping block 683 away from the damping spring 682 is in frictional contact with the inner sleeve 62. The damping component 68 can increase the friction between the wire spool 7 and the inner sleeve 62. When the wire is fed on the wire spool 7, the rotation speed of the wire spool 7 and the outer sleeve 61 relative to the inner sleeve 62 is slowed down, which can effectively prevent the wire from becoming scattered during the feeding process.

[0052] Specifically, the wire feeding mechanism 8 includes a drive motor 81 and a mounting base 82. The drive motor 81 is fixedly mounted on the mounting plate 3 via the mounting base 82. The mounting base 82 is made of insulating material to facilitate insulation during wire feeding. The output end of the drive motor 81 is connected to a wire feeding wheel 83, and the surface of the wire feeding wheel 83 has a wire feeding groove 84 for feeding the welding wire. A fixing member 85 is rotatably mounted on the mounting base 82, and a rotating shaft 86 is rotatably mounted on the fixing member 85 via a bearing 93. A wire feeding wheel 87 is mounted on the rotating shaft 86, and the surface of the wire feeding wheel 87 rolls in contact with the surface of the wire feeding wheel 83, pressing the welding wire tightly in the wire feeding groove 84.

[0053] Specifically, the mounting base 2 82 is fixedly equipped with wire feeding tube 1 88 and wire feeding tube 2 89. The input and output ports of wire feeding tube 1 88 and wire feeding tube 2 89 are arranged sequentially along the wire feeding direction. The output port of wire feeding tube 1 88 is close to the contact point between wire feeding wheel 1 83 and wire feeding wheel 2 87, and the input port of wire feeding tube 2 89 is close to the contact point between wire feeding wheel 1 83 and wire feeding wheel 2 87. The center of the output port of wire feeding tube 1 88 and the center of the input port of wire feeding tube 2 89 coincide with the center line of the channel of wire feeding groove 84, which facilitates efficient and accurate feeding of welding wire.

[0054] Specifically, a spring piece 90 is provided on the fixing component 85, and a fixing post 91 is engaged at the end of the spring piece 90 away from the fixing component 85. The fixing component 92 is fixedly installed on the mounting base 82, and the fixing post 91 is fixedly set on the fixing component 92. The spring piece 90 itself has elastic deformation capability, and the wire feeding wheel 87 can adaptively approach the wire feeding wheel 83 through the spring piece 90. When feeding different types of welding wire, the wire feeding can be more precisely adjusted through the cooperation of the spring piece 90, the fixing component 85, the fixing component 92, and the fixing post 91.

[0055] Specifically, during operation, one end of the welding wire on the welding wire spool 7 extends from the elliptical hole 12, enters the wire feeding tube 88 through its inlet, then extends from its outlet and enters the wire feeding groove 84 of the wire feeding wheel 83. It then enters the wire feeding tube 89 through its inlet and extends from its outlet to the wire guide nozzle 103. The drive motor 81 drives the wire feeding wheel 83 to rotate, which in turn drives the wire feeding wheel 87 to roll. Through the cooperation of the wire feeding wheels 83 and 87, the welding wire is fed via friction transmission.

[0056] Specifically, the welding assembly 10 includes an electric push rod 101, which is fixedly mounted on the rotating frame 9. The output end of the electric push rod 101 is connected to a fixed base 102, which is movably connected to the rotating frame 9. A wire guide nozzle 103 and a welding torch 104 are fixedly mounted on the fixed base 102. Welding wire extending from the output port of the wire feed tube 89 enters the wire guide nozzle 103 and extends towards the welding torch 104, allowing the welding torch 104 to perform welding. During operation, when the positions of the welding torch 104 and the wire guide nozzle 103 need fine-tuning (i.e., the welding torch 104 and the wire guide nozzle 103 move closer to the workpiece), the electric push rod 101 pushes the fixed base 102 to move, and the fixed base 102 drives the wire guide nozzle 103 and the welding torch 104 closer to the workpiece.

[0057] Specifically, a support 105 is fixedly mounted on the rotating frame 9, and a roller 106 is rotatably mounted on the support 105. The roller 106 is in rolling connection with the fixed seat 102. The rotating frame 9 has a second mounting hole 107, in which a linear bearing 108 is installed. A linear guide rod 109 is installed in the linear bearing 108, and the linear guide rod 109 can reciprocate along the linear bearing 108. Both ends of the linear guide rod 109 are fixedly connected to the fixed seat 102. The fixed seat 102 is movably connected to the rotating frame 9 through the roller 106, the linear bearing 108, and the linear guide rod 109.

[0058] Specifically, in this invention, utilizing the space between the internal cavities of the welding unit, a wire insulation mechanism 1 made of insulating material is used within the confined space. This mechanism employs a ring-shaped encapsulation structure design, using the principle of overall encapsulation insulation to cover the wire reel 7, isolating the wire and effectively insulating it from the housing 2. This avoids factors such as wire scattering, short circuits, welding interruptions, and voltage instability that can occur during the welding process of the internal welding machine unit. This improves the stability of the internal welding system and the first-pass yield rate. Simultaneously, it enhances the insulation within the welding unit, achieving overall protection and reducing the failure rate during equipment operation. By setting up an upper damping block 681, a damping spring 682, and a lower damping block 683, with the upper damping block 681 in frictional contact with the wire reel 7 and the lower damping block 683 in frictional contact with the inner sleeve 62, the increased friction between the wire reel 7 and the inner sleeve 62 effectively prevents wire scattering during feeding. The wire feeding mechanism 8 securely fixes the welding wire via the second wire feeding wheel 87. The spring 90 possesses elastic deformation capability, allowing the second wire feeding wheel 87 to adaptively approach the first wire feeding wheel 83. When feeding different types of welding wire, the cooperation of the spring 90, fixing component 85, fixing component 92, and fixing post 91 enables more precise adjustment of the wire feeding. The wire guide nozzle 103 and welding torch 104 are both fixedly mounted on the fixed base 102. The position of the fixed base 102 is finely adjusted by pushing the electric push rod 101, thereby allowing for adjustment of the positions of the wire guide nozzle 103 and welding torch 104 according to actual conditions, making it more adaptable to different operating environments.

[0059] The above embodiments merely illustrate the basic principles and characteristics of the present invention, but are not limited to the above implementation schemes. It should be understood that those skilled in the art can make various changes and modifications to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined freely by the appended claims and their equivalents.

Claims

1. An in-line welder welding unit characterized by, The device includes a housing (2) and a welding wire insulation mechanism (1). A mounting plate (3) is provided inside the housing (2). One end of the mounting plate (3) is fixedly connected to the housing (2), and a connecting plate (4) is fixedly connected to the other end of the mounting plate (3). The end of the connecting plate (4) away from the mounting plate (3) is fixedly connected to the housing (2). The space enclosed by the mounting plate (3), the connecting plate (4), and the housing (2) forms a welding wire cavity (5). A welding wire shaft (6) is provided in the welding wire cavity (5). Sliding grooves (20) are provided on both the mounting plate (3) and the housing (2). A snap-fit ​​groove (21) is provided at the bottom of the sliding groove (20). One end of the welding wire shaft (6) slides into the sliding groove (20) on the mounting plate (3). The welding wire shaft (6) is slidably connected to the sliding groove (20) on the housing (2). One end of the welding wire shaft (6) is engaged with the snap-fit ​​groove (21) on the mounting plate (3). The other end of the welding wire shaft (6) is engaged with the snap-fit ​​groove (21) on the housing (2). A welding wire spool (7) is engaged on the welding wire shaft (6). The welding wire insulation mechanism (1) is sleeved on the welding wire spool (7). A wire feeding mechanism (8) is fixedly installed at one end of the mounting plate (3) connected to the connecting plate (4). A rotating frame (9) is rotatably provided at one end of the housing (2). A welding assembly (10) is provided on the rotating frame (9). A driving mechanism is provided inside the housing (2). The driving mechanism is fixedly connected to the rotating frame (9). The welding wire insulation mechanism (1) includes an annular cylinder (11), an elliptical hole (12) is provided on the side of the annular cylinder (11), a mounting seat (13) is fixedly provided on the side of the annular cylinder (11), the mounting seat (13) is opposite to the elliptical hole (12), a crossbeam (14) is fixedly provided on the mounting seat (13), square holes (15) are provided on both sides of the crossbeam (14), the square holes (15) penetrate the side wall of the annular cylinder (11), square limit clips (16) are provided on both sides of the mounting seat (13), a shoulder (17) is provided on the side of the mounting seat (13) away from the crossbeam (14), and a rolled edge reinforcing rib (18) is provided at the edge of the outer surface of the annular cylinder (11) where the elliptical hole (12) is located. The welding wire insulation mechanism (1) is made of insulating material by injection molding and core pulling molding process. The welding assembly (10) includes an electric push rod (101), which is fixedly mounted on a rotating frame (9). The output end of the electric push rod (101) is connected to a fixed seat (102), which is movably connected to the rotating frame (9). A wire guide (103) and a welding torch (104) are fixedly mounted on the fixed seat (102). A support (105) is fixedly installed on the rotating frame (9). A roller (106) is rotatably provided on the support (105). The roller (106) is tumblingly connected to the fixed seat (102). The rotating frame (9) is provided with a second mounting hole (107). A linear bearing (108) is provided in the second mounting hole (107). A linear guide rod (109) is installed in the linear bearing (108). Both ends of the linear guide rod (109) are fixedly connected to the fixed seat (102). The wire feeding mechanism (8) includes a drive motor (81) and a mounting base (82). The drive motor (81) is fixedly mounted on the mounting plate (3) via the mounting base (82). The output end of the drive motor (81) is connected to a wire feeding wheel (83). The surface of the wire feeding wheel (83) is provided with a wire feeding groove (84) for feeding welding wire. A fixing part (85) is rotatably mounted on the mounting base (82). A rotating shaft (86) is provided on the fixing part (85). The rotating shaft (86) and the fixing part (85) are rotatably connected via a bearing (93). A wire feeding wheel (87) is mounted on the rotating shaft (86). The surface of the wire feeding wheel (87) rolls in contact with the surface of the wire feeding wheel (83). The wire feeding wheel (87) presses the welding wire into the wire feeding groove (84). A wire feeding wheel is fixedly mounted on the mounting base (82). Wire feeding tube one (88) and wire feeding tube two (89) are arranged sequentially along the wire feeding direction. The output port of wire feeding tube one (88) is close to the contact point between wire feeding wheel one (83) and wire feeding wheel two (87). The input port of wire feeding tube two (89) is close to the contact point between wire feeding wheel one (83) and wire feeding wheel two (87). The center of the output port of wire feeding tube one (88) and the center of the input port of wire feeding tube two (89) coincide with the center line of the channel of wire feeding groove (84). A spring piece (90) is provided on the fixing part one (85). A fixing post (91) is snapped onto the end of the spring piece (90) away from the fixing part one (85). A fixing part two (92) is fixedly installed on the mounting base two (82). The fixing post (91) is fixedly set on the fixing part two (92).

2. The internal welding machine welding unit of claim 1, wherein, The welding wire shaft (6) includes an outer sleeve (61), an inner sleeve (62), and a bearing (63). The outer sleeve (61) and the inner sleeve (62) are rotatably connected by the bearing (63). The inner sleeve (62) is provided with a sliding shaft compression spring (64). The two ends of the sliding shaft compression spring (64) are provided with spherical shaft ends (65). One end of the spherical shaft end (65) is a flange (651), and the other end of the spherical shaft end (65) is a spherical part (652). The flange (651) is in contact with the sliding shaft compression spring (64). The spherical part (652) is slidably connected to the sliding groove (20), and the spherical part (652) is engaged with the snap-fit ​​groove (21). The inner sleeve (62) has flange seats (66) at both ends. The flange seats (66) are sleeved on the spherical shaft end (65). The outer sleeve (61) has a mounting hole (67). The mounting hole (67) has a damping component (68). The top of the damping component (68) is in frictional contact with the welding wire spool (7), and the bottom of the damping component (68) is in frictional contact with the inner sleeve (62).

3. The internal welding machine welding unit of claim 2, wherein, The damping assembly (68) includes an upper damping block (681), a damping spring (682), and a lower damping block (683). The upper damping block (681) is connected to one end of the damping spring (682), and the lower damping block (683) is connected to the other end of the damping spring (682). The side of the upper damping block (681) away from the damping spring (682) is in frictional contact with the welding wire spool (7), and the side of the lower damping block (683) away from the damping spring (682) is in frictional contact with the inner sleeve (62).

4. The inline welder welding unit of claim 1, wherein, The driving mechanism includes a cylinder (19), and a connector (23) is rotatably connected to the output end of the cylinder (19). The connector (23) is fixedly connected to the rotating frame (9).

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