Manufacturing equipment and method for metal foil-reinforced powder composite flux-cored wire

Abstract

The invention discloses manufacturing equipment and method for a metal foil-reinforced powder composite flux-cored wire, and belongs to the technical field of flux-cored wire manufacturing equipment. The rolling unit is rotationally connected to the upper side of one end of the rack and used for rolling and forming the steel belt; the forming unit is rotationally connected to the middle part of the rack and is used for shaping and flattening the preliminarily formed steel belt; the welding powder filling unit is mounted on the upper side of the rack and used for filling the U-shaped groove of the steel belt with welding powder; and the mixing unit is rotationally connected into the welding powder filling unit. The forming rollers are arranged in two rows, and the spatial form of the forming rollers dynamically changes in the direction of a steel belt. The forming rollers located in the middle are kept parallel to stabilize the form of a pipe blank. The upper end part of the forming roller close to the inlet end is gradually opened, so that the strip steel is smoothly guided in and preliminarily bent; and the upper end parts of the forming rollers close to the outlet end are gradually closed, so that the edge of the circular steel belt is accurately closed.

Description

Technical Field

[0001] This invention relates to the field of flux-cored welding wire manufacturing equipment, specifically to a manufacturing equipment for a metal foil-reinforced powder composite flux-cored welding wire. Background Technology

[0002] The core of flux-cored welding wire manufacturing equipment is a precision foil forming and powder filling system. The process begins with a metal foil roll. The equipment first uses a series of forming rollers to gradually roll the flat metal foil into a stable "U"-shaped groove. Then, welding flux powder is evenly and continuously filled into the U-shaped foil groove. Next, subsequent closing rollers close the powder-filled U-shaped groove, forming a preliminary tubular structure. Finally, the composite welding wire is sized and drawn, and then wound into a coil, ultimately producing a dense, uniformly composed metal foil-reinforced powder composite flux-cored welding wire.

[0003] There are still many challenges in the actual use of flux-cored welding wire manufacturing equipment. If the metal foil does not close tightly or there is too much powder during the U-shaped groove closing stage, powder leakage is likely to occur, which not only contaminates the equipment and wastes raw materials, but may also cause defects at the welding wire closure seam. Therefore, it is necessary to improve the manufacturing equipment of metal foil-reinforced powder composite flux-cored welding wire to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a manufacturing equipment for metal foil-reinforced powder composite flux-cored wire, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A manufacturing apparatus for a metal foil-reinforced powder composite flux-cored welding wire, comprising: frame; The rolling unit is rotatably connected to the upper side of one end of the frame and is used to roll the steel strip into shape; The forming unit is rotatably connected to the middle of the frame and is used to shape and flatten the initially formed steel strip. The welding flux filling unit is installed on the upper side of the frame and is used to fill the U-shaped groove of the steel strip with welding flux. The mixing unit is rotatably connected inside the flux filling unit. By cooperating with the flux filling unit, the flux is continuously and uniformly filled into the U-shaped groove of the steel strip.

[0006] As a preferred embodiment of the present invention, the rolling unit includes: a first support fixed to the upper side of one end of the frame; a first rotating shaft rotatably connected to the upper side of two sets of first supports, with a first concave roll fixed on the surface of the first rotating shaft; a first driving member installed on the upper side of the first support; and a first convex roll rotatably connected to the lower side of the two sets of first supports, with the end of the first convex roll connected to the output end of the first driving member.

[0007] As a preferred embodiment of the present invention, the forming unit includes: a tripod fixed on the upper side of the frame, with a plurality of rotating rods rotatably connected to the tripod; a forming roller connected to the surface of the rotating rods; and an extension frame installed on the lower side of the welding powder filling unit, with forming wheels fixed to the surface of the extension frame.

[0008] As a preferred embodiment of the present invention, the forming rollers are arranged in two rows, with the forming rollers in the middle of the two rows being parallel to each other. The upper end angle of the forming rollers closer to the first convex roller gradually opens, while the upper end angle of the forming rollers closer to the pressing roller gradually closes.

[0009] As a preferred embodiment of the present invention, a pressing unit is rotatably connected to the upper side of the other end of the frame. The pressing unit is used to position and press the formed steel strip. The pressing unit includes: a second bracket, fixed to the other end of the frame, with a support plate fixed to the side of the second bracket; a pressing wheel, rotatably connected between two sets of second brackets; and a second driving member, installed on the side of the second bracket, with the end of the pressing wheel connected to the output end of the second driving member.

[0010] As a preferred embodiment of the present invention, a closing unit is rotatably connected to the middle of the frame. The closing unit is used to tightly wrap the welding powder inside the steel strip. The closing unit includes: an inclined frame, fixed to the upper side of the support plate, and an inclined shaft rotatably connected to the end of the inclined frame; and a closing roller, fixed to the surface of the inclined shaft.

[0011] As a preferred embodiment of the present invention, the flux filling unit includes: a third support fixed on the upper side of the frame, with a flux box fixed at the upper end of the third support; a flux inlet pipe connected to the upper side of the flux box; and a flux outlet pipe connected to the bottom of the flux box via a discharge valve.

[0012] As a preferred embodiment of the present invention, the mixing unit includes: a third driving member, installed on the upper side of the welding powder box; a driving rod, rotatably connected to the upper side of the welding powder box, with one end extending into the interior of the welding powder box and the other end connected to the output end of the third driving member; an inner groove, formed at the end of the driving rod, with a rotating column rotatably connected inside; a pinion, installed on the surface of the rotating column; a gear ring, rotatably connected inside the inner groove, with the gear ring and the pinion meshing together, and five sets of flipping frames fixed to the inner wall of the gear ring; a first gear, fixed to the end of the rotating column; and a second gear, fixed to the inner wall of the welding powder box, meshing with the first gear.

[0013] A method for manufacturing a metal foil-reinforced powder composite flux-cored welding wire, utilizing the aforementioned manufacturing equipment for a metal foil-reinforced powder composite flux-cored welding wire, includes the following steps: Step 1: Add the welding powder into the welding powder box through the powder inlet pipe according to the specified ratio; Step 2: Activate the third drive unit to ensure that the flipping frame evenly mixes the welding powder inside the welding powder box; Step 3: Pass the end of the steel strip between the first convex roll and the first concave roll, and activate the first drive unit to initially roll the steel strip into shape; Step 4: Open the feeding valve through the controller, and the welding powder flows out through the powder feeding pipe under the action of gravity, filling the interior of the U-shaped steel strip; Step 5: Activate the second drive unit. The output end of the second drive unit will drive the pressing rollers to rotate, so that the two sets of pressing rollers apply pressure to the passing circular steel strip to achieve the pressing of the metal foil-reinforced powder composite flux-cored welding wire.

[0014] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: In the present invention, the forming rollers are arranged in two rows, and their spatial shape changes dynamically along the direction of the steel strip: the forming rollers in the middle remain parallel to stabilize the shape of the tube blank; while the upper part of the forming rollers near the inlet gradually opens to smoothly guide and initially bend the strip steel; the upper part of the forming rollers near the outlet gradually closes, thereby accurately closing the edge of the circular steel strip. In this invention, a turning frame is set inside the welding flux powder box. On the one hand, the turning frame can mix the welding flux powder in a circular motion, and on the other hand, it can drive the welding flux powder to mix from bottom to top, which improves the uniformity of the welding flux powder mixing and ensures the chemical composition and welding performance of the metal foil-reinforced powder composite flux-cored welding wire.

[0015] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a manufacturing equipment for a metal foil-reinforced powder composite flux-cored wire, provided as an embodiment of the present invention.

[0017] Figure 2 A cross-sectional view of the flux powder box in a manufacturing apparatus for a metal foil-reinforced powder composite flux-cored welding wire provided by the present invention.

[0018] Figure 3 for Figure 2 A magnified view of part A in the middle.

[0019] Figure 4 A front view of a manufacturing apparatus for a metal foil-reinforced powder composite flux-cored wire provided by the present invention.

[0020] Reference numerals: 1. Frame; 10. Steel strip; 2. Rolling unit; 21. First support; 22. First rotating shaft; 23. First concave roll; 24. First driving component; 25. First convex roll; 3. Forming unit; 31. Triangular frame; 32. Rotating rod; 33. Forming roll; 34. Extension frame; 35. Forming wheel; 4. Pressing unit; 41. Second support; 42. Support plate; 43. Pressing wheel; 44. Second driving component 5. Closing unit; 51. Inclined frame; 52. Inclined shaft; 53. Closing roller; 6. Welding powder filling unit; 61. Third support; 62. Welding powder box; 63. Powder inlet pipe; 64. Powder outlet pipe; 7. Mixing unit; 70. Third drive component; 71. Drive rod; 72. Inset groove; 73. Rotating column; 74. Pinion; 75. Gear ring; 76. First gear; 77. Second gear; 78. Tilting frame. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0023] See Figures 1-4 A manufacturing apparatus for a metal foil-reinforced powder composite flux-cored welding wire, comprising: Rack 1; Rolling unit 2 is rotatably connected to the upper side of one end of frame 1 and is used to roll the steel strip 10 into shape; The forming unit 3 is rotatably connected to the middle of the frame 1 and is used to shape and flatten the initially formed steel strip 10. The welding powder filling unit 6 is installed on the upper side of the frame 1 and is used to fill the U-shaped groove of the steel strip 10 with welding powder. The mixing unit 7 is rotatably connected inside the flux filling unit 6. By cooperating with the flux filling unit 6, the flux is continuously and uniformly filled into the U-shaped groove of the steel strip 10.

[0024] In one embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the rolling unit 2 includes: The first bracket 21 is fixed to the upper side of one end of the frame 1; The first rotating shaft 22 is rotatably connected to the upper side of the two sets of first supports 21, and the surface of the first rotating shaft 22 is fixed with the first concave roller 23; The first driving component 24 is installed on the upper side of the first bracket 21; The first convex roller 25 is rotatably connected to the lower side of the two sets of first supports 21, and the end of the first convex roller 25 is connected to the output end of the first drive member 24.

[0025] In this embodiment, when manufacturing the composite flux-cored welding wire, the oil and impurities on the surface of the steel strip 10 are first removed. The end of the steel strip 10 is passed between the first convex roll 25 and the first concave roll 23. The first drive unit 24 is activated, and the output end of the first drive unit 24 drives the first convex roll 25 to rotate. Thus, the steel strip 10 is initially rolled into a "U" shape under the action of the first convex roll 25 and the first concave roll 23.

[0026] like Figure 1 and Figure 2 As shown, two sets of the first convex roll 25 and the first concave roll 23 are provided to facilitate stable rolling of the steel strip 10.

[0027] In one embodiment of the present invention, such as Figure 2 As shown, the molding unit 3 includes: Tripod 31 is fixed on the upper side of frame 1, and several sets of rotating rods 32 are rotatably connected to tripod 31; The forming roller 33 is connected to the surface of the rotating rod 32; An extension frame 34 is installed on the lower side of the welding powder filling unit 6, and a forming wheel 35 is fixed on the surface of the extension frame 34.

[0028] In this embodiment, the forming rollers 33 are arranged in two rows, and the forming rollers 33 in the middle of the two rows are parallel to each other. The upper end angle of the forming rollers 33 near the first convex roller 25 gradually opens, and the upper end angle of the forming rollers 33 near the pressing roller 43 gradually closes.

[0029] After the steel strip 10 is initially rolled and formed by the first convex roll 25 and the first concave roll 23, it enters between two rows of forming rolls 33 (closer to the first convex roll 25). Since the upper ends of the forming rolls 33 gradually open here, they form a large opening angle, like a trumpet, which can easily "catch" the steel strip 10. At this time, the forming wheel 35 is located at the upper end of the steel strip 10, and the forming wheel 35 can accurately roll the steel strip 10 into a U-shape.

[0030] As the steel strip 10 advances, the opening angle gradually and gently decreases, applying an initial, slight upward bending force to both sides of the steel strip 10. This process is gradual, avoiding material damage due to abrupt changes in the bending radius. This achieves stable shaping and initial sizing of the steel strip 10.

[0031] After being pre-bent by the inlet forming roller 33, the steel strip 10 forms a roughly stable, upward-opening "U" shape. As the steel strip 10 continues to advance, after passing the parallel forming roller 33, the parallel forming roller 33 no longer changes the bending angle of the steel strip 10, but instead straightens, rounds, and stabilizes the already formed open steel strip 10, ensuring that the shape and size of the tube blank are correct and stable before entering the final closing stage.

[0032] As the steel strip 10 continues to advance, it enters the space between the two rows of forming rollers 33 at the end (near the pressure roller 43). Here, the upper ends of the forming rollers 33 gradually approach each other, applying an inward force to the upper part of the steel strip 10, gradually and precisely squeezing the two edges of the tube blank together. Finally, the two edges of the U-shaped steel strip 10 are precisely aligned and fitted together, forming a closed circular tube.

[0033] In one embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a closing unit 5 is rotatably connected to the middle of the frame 1. The closing unit 5 is used to tightly wrap the welding powder inside the steel strip 10. The closing unit 5 includes: An inclined frame 51 is fixed to the upper side of the support plate 42, and an inclined shaft 52 is rotatably connected to the end of the inclined frame 51. The closing roller 53 is fixed on the surface of the inclined shaft 52.

[0034] In this embodiment, after the steel strip 10 is formed into a U-shape by the forming roller 33 and filled with welding powder, before it enters the fully closed state, the closing roller 53 presses into the edge of the steel strip 10 from above at a certain angle. Through its radial pressure, the closing roller 53 tightly compacts and wraps the loose welding powder inside the steel strip, while guiding the edges of the steel strip on both sides to gather inward in advance, preparing for the subsequent entry into the end pressing roller 43 to achieve final precise positioning and pressing.

[0035] In one embodiment of the present invention, such as Figure 2 As shown, a pressing unit 4 is rotatably connected to the upper side of the other end of the frame 1. The pressing unit 4 is used to position and press the formed steel strip 10. The pressing unit 4 includes: The second bracket 41 is fixed to the other end of the frame 1, and a support plate 42 is fixed to the side of the second bracket 41. The pressing wheel 43 is rotatably connected between the two sets of second brackets 41; The second drive unit 44 is installed on the side of the second bracket 41, and the end of the pressing wheel 43 is connected to the output end of the second drive unit 44.

[0036] In this embodiment, activating the second drive unit 44 causes the output end of the second drive unit 44 to drive the pressing rollers 43 to rotate. This causes the two sets of pressing rollers 43 to apply pressure to the passing circular steel strip 10, achieving positioning and pressing operations, and ensuring the stability and precision of the steel strip 10 after forming. The rotation speed of the pressing rollers 43 can be adjusted by the second drive unit 44 to adapt to the processing requirements of steel strips of different specifications.

[0037] In one embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the flux filling unit 6 includes: The third bracket 61 is fixed on the upper side of the frame 1, and the upper end of the third bracket 61 is fixed with a welding powder box 62. The powder inlet pipe 63 is connected to the upper side of the welding powder box 62; The powder feeding pipe 64 is connected to the bottom of the welding powder box 62 via a feeding valve.

[0038] In this embodiment, during operation, welding powder is added to the welding powder box 62 through the powder inlet pipe 63 in a specified ratio for storage. When it is necessary to fill the U-shaped steel strip 10 with welding powder, the discharge valve is opened by the controller, and the welding powder flows out through the powder outlet pipe 64 under the action of gravity, accurately filling the interior of the U-shaped steel strip 10.

[0039] In one embodiment of the present invention, such as Figure 3 As shown, the mixing unit 7 includes: The third drive unit 70 is installed on the upper side of the welding powder box 62; The drive rod 71 is rotatably connected to the upper side of the welding powder box 62, with one end extending into the interior of the welding powder box 62 and the other end connected to the output end of the third drive unit 70; An embedded groove 72 is provided at the end of the drive rod 71, and a rotating column 73 is rotatably connected inside it; The pinion 74 is mounted on the surface of the rotating column 73; The gear ring 75 is rotatably connected inside the inner groove 72. The gear ring 75 and the pinion 74 are meshed together. Five sets of flipping frames 78 are fixed on the inner wall of the gear ring 75. The first gear 76 is fixed to the end of the rotating column 73; The second gear 77 is fixed to the inner wall of the welding powder box 62 and meshes with the first gear 76.

[0040] In this embodiment, when the third drive unit 70 is turned on, the output end of the third drive unit 70 will drive the gear ring 75 to rotate through the drive rod 71. The gear ring 75 will drive the five sets of flipping frames 78 on its inner wall to rotate, so that the flipping frames 78 can mix the welding powder inside the welding powder box 62.

[0041] When the drive rod 71 rotates, it drives the first gear 76 to rotate via the rotating column 73. The first gear 76, under the action of the second gear 77, drives the rotating column 73 to rotate inside the drive rod 71. When the rotating column 73 rotates, it drives the pinion 74 to rotate inside the inner groove 72. The gear ring 75 rotates inside the drive rod 71 under the drive of the pinion 74. When the gear ring 75 rotates, it drives the flipping frame 78 on its inner wall. Thus, the flipping frame 78 can mix the welding powder in a circular motion and mix the welding powder from bottom to top, which effectively improves the uniformity of the welding powder mixing and ensures the chemical composition and welding performance of the metal foil-reinforced powder composite flux-cored wire.

[0042] A method for manufacturing a metal foil-reinforced powder composite flux-cored welding wire, based on the aforementioned manufacturing equipment for processing metal foil-reinforced powder composite flux-cored welding wire, includes the following steps: Step 1: Add the welding powder into the welding powder box 62 through the powder inlet pipe 63 according to the specified ratio; Step 2: Activate the third drive component 70 to make the flipping frame 78 evenly mix the welding powder inside the welding powder box 62; Step 3: Pass the end of the steel strip 10 between the first convex roll 25 and the first concave roll 23, and activate the first drive unit 24 to initially roll the steel strip 10 into shape; Step 4: Open the feeding valve through the controller, and the welding powder flows out through the powder feeding pipe 64 under the action of gravity, filling the interior of the U-shaped steel strip 10; Step 5: Turn on the second drive unit 44. The output end of the second drive unit 44 will drive the pressing roller 43 to rotate, so that the two sets of pressing rollers 43 apply pressure to the passing circular steel strip 10 to realize the pressing of the metal foil-reinforced powder composite flux-cored welding wire.

[0043] The working principle of this invention is as follows: Welding powder is added to the welding powder box 62 through the powder inlet pipe 63 in a specified ratio. When welding powder needs to be filled into the U-shaped steel strip 10, the discharge valve is opened by the controller, and the welding powder flows out through the powder outlet pipe 64 under the action of gravity, accurately filling the interior of the U-shaped steel strip 10; the end of the steel strip 10 is passed between the first convex roller 25 and the first concave roller 23, and the first drive member 24 is activated, so that the steel strip 10 is initially rolled into shape; the second drive member 44 is activated, and the output end of the second drive member 44 drives the pressing roller 43 to rotate, so that the two sets of pressing rollers 43 apply pressure to the passing circular steel strip 10, realizing the pressing of the metal foil-reinforced powder composite flux-cored welding wire.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An apparatus for manufacturing a metal foil-reinforced powder composite flux-cored wire, characterized by comprising: The utility model relates to a welding flux filling device for steel belt, which comprises a rack (1), a rolling unit (2) rotatably connected to one end of the upper side of the rack (1) and used for rolling and forming a steel belt (10), a forming unit (3) rotatably connected to the middle part of the rack (1) and used for shaping and flattening the preliminarily formed steel belt (10), a welding flux filling unit (6) installed on the upper side of the rack (1) and used for filling welding flux into the U-shaped groove of the steel belt (10), and a mixing unit (7) rotatably connected to the inside of the welding flux filling unit (6) and used for continuously and uniformly filling the welding flux into the U-shaped groove of the steel belt (10) in cooperation with the welding flux filling unit (6). The rolling unit (2) comprises first supports (21) fixed to the upper side of one end of the rack (1), a first rotating shaft (22) rotatably connected to the upper side of the two groups of first supports (21), a first concave roller (23) fixed to the surface of the first rotating shaft (22), a first driving member (24) installed on the upper side of the first support (21), and a first convex roller (25) rotatably connected to the lower side of the two groups of first supports (21) and connected to the output end of the first driving member (24). The forming unit (3) comprises a tripod (31) fixed to the upper side of the rack (1), a plurality of groups of rotating rods (32) rotatably connected to the tripod (31), forming rollers (33) connected to the surface of the rotating rods (32), and an extension frame (34) installed on the lower side of the welding flux filling unit (6) and having forming wheels (35) fixed to the surface thereof. The forming rollers (33) are arranged in two rows, the forming rollers (33) in the middle part of the two rows are parallel to each other, the upper end parts of the forming rollers (33) gradually open in the direction close to the first convex roller (25), and the upper end parts of the forming rollers (33) gradually close in the direction close to the flattening wheel (43). The other end of the rack (1) is rotatably connected to a flattening unit (4) for positioning and flattening the formed steel belt (10), which comprises second supports (41) fixed to the other end of the rack (1), a support plate (42) fixed to the side surface of the second support (41), a flattening wheel (43) rotatably connected between the two groups of second supports (41), and a second driving member (44) installed on the side surface of the second support (41) and having the end part of the flattening wheel (43) connected to the output end thereof. The middle part of the rack (1) is rotatably connected to a closing unit (5) for tightly wrapping the welding flux in the steel belt (10), which comprises an inclined frame (51) fixed to the upper side of the support plate (42), an inclined shaft (52) rotatably connected to the end part of the inclined frame (51), and a closing roller (53) fixed to the surface of the inclined shaft (52).

2. The manufacturing apparatus of the metal foil-reinforced powder composite flux-cored wire according to claim 1, characterized by, The welding flux filling unit (6) comprises third supports (61) fixed to the upper side of the rack (1), a welding flux box (62) fixed to the upper end part of the third support (61), and a mixing wheel (63) rotatably connected to the surface of the welding flux box (62). ​ ​ ​ ​ 3. The apparatus for manufacturing a metal foil-reinforced powder composite flux-cored wire according to claim 2, characterized by ​ ​ ​ ​ 4. The apparatus for manufacturing a metal foil-reinforced powder composite flux-cored wire according to claim 3, characterized by ​ 5. The apparatus for manufacturing a metal foil-reinforced powder composite flux-cored wire according to claim 4, characterized by ​ ​ ​ ​ 6. The apparatus for manufacturing a metal foil-reinforced powder composite flux-cored wire according to claim 5, characterized by ​ ​ ​ 7. The apparatus for manufacturing a metal foil-reinforced powder composite flux-cored wire according to claim 6, characterized by ​ ​ The powder inlet pipe (63) is connected to the upper side of the welding powder box (62); The powder feeding pipe (64) is connected to the bottom of the welding powder box (62) through the feeding valve.

8. The apparatus for manufacturing a metal foil-reinforced powder composite flux-cored wire according to claim 7, characterized by The mixing unit (7) includes: The third drive unit (70) is installed on the upper side of the welding powder box (62); The drive rod (71) is rotatably connected to the upper side of the flux box (62), with one end extending into the interior of the flux box (62) and the other end connected to the output end of the third drive unit (70); An embedded groove (72) is provided at the end of the drive rod (71), and a rotating column (73) is rotatably connected inside it; A small gear (74) is mounted on the surface of a rotating column (73); The gear ring (75) is rotatably connected inside the inner groove (72), and the gear ring (75) and the pinion (74) are meshed together. Five sets of flipping frames (78) are fixed on the inner wall of the gear ring (75). The first gear (76) is fixed to the end of the rotating column (73); The second gear (77) is fixed to the inner wall of the welding powder box (62) and meshes with the first gear (76).

9. A method for manufacturing a metal foil-reinforced powder composite flux-cored wire, using the metal foil-reinforced powder composite flux-cored wire manufacturing apparatus according to any one of claims 1 to 8, characterized by, Includes the following steps: Step 1: Add the welding powder into the welding powder box (62) through the powder inlet pipe (63) according to the specified ratio; Step 2: Activate the third drive unit (70) to make the flipping frame (78) evenly mix the welding powder inside the welding powder box (62); Step 3: Pass the end of the steel strip (10) between the first convex roll (25) and the first concave roll (23), and activate the first drive unit (24) to initially roll the steel strip (10); Step 4: Open the feeding valve through the controller, and the welding powder flows out through the powder feeding pipe (64) under the action of gravity and fills the interior of the U-shaped steel strip (10); Step 5: Turn on the second drive unit (44). The output end of the second drive unit (44) will drive the pressing wheel (43) to rotate, so that the two sets of pressing wheels (43) apply pressure to the passing circular steel strip (10) to realize the pressing of the metal foil-reinforced powder composite flux-cored wire.

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