Automatic feeding device for thin-walled small-bore pipe welding machine

Abstract

The application discloses an automatic feeding equipment for a thin-wall small-diameter pipe welding machine and belongs to the technical field of welding processing feeding, and the technical key points are as follows: the automatic feeding equipment comprises a main supporting base, and the automatic feeding mechanism arranged on the main supporting base realizes efficient connection between disorderly and randomly placed and orderly horizontal one-by-one feeding, arranges the pipe material into a horizontal posture one by one, and stably conveys the pipe material to an upper conveying belt for conveying, thereby greatly improving the overall operation efficiency of the whole welding production line; the vertical feeding mechanism arranged on the main supporting base can realize process connection of 'horizontal conveying-vertical feeding-welding', thereby effectively reducing the waiting time and manual transfer cost between processes; the horizontal feeding mechanism arranged on the main supporting base realizes integrated automatic operation of small-diameter pipe from early-stage arrangement, reverse conveying to horizontal feeding into a welding station, thereby saving manual transfer, positioning, pushing and other complicated processes, greatly improving the continuous operation efficiency of the whole welding production line, and having the advantages of convenient selective switching of feeding and convenient processing.

Description

Technical Field

[0001] This invention relates to the field of welding processing material feeding, specifically to an automatic material feeding device for a thin-walled small-diameter pipe welding machine. Background Technology

[0002] In modern manufacturing, thin-walled small-diameter tubes, with their advantages of light weight, low material consumption, and compact structure, are widely used in various fields such as power plant boilers, food and pharmaceuticals, instrumentation, aerospace, and semiconductors. Materials include carbon steel, stainless steel, titanium alloys, and nickel-based alloys. Welding, as the core process in the processing of thin-walled small-diameter tubes, directly determines the performance and market competitiveness of the final product through its welding quality and production efficiency. Automatic feeding, as a pre-processing step in welding, is a key prerequisite for achieving automated and large-scale welding production. Its operational stability, feeding accuracy, and efficiency directly affect the continuity of subsequent welding processes and the quality of the weld.

[0003] Currently, the material loading process for welding thin-walled small-diameter pipes still largely relies on traditional manual operation. Operators need to manually transfer and arrange the thin-walled small-diameter pipes stored in the material basket one by one, adjust the posture of the pipes, and then send them to the designated station of the welding machine. The entire process requires repeated bending, grabbing, and alignment, which is extremely labor-intensive and difficult to adapt to the needs of large-scale and high-speed production. At the same time, manual material loading cannot be adjusted according to the processing method. That is, when the pipes need to be welded vertically or horizontally, it is impossible to switch accordingly, resulting in poor applicability and failure to meet actual use requirements.

[0004] Therefore, there is a need to provide automatic feeding equipment for thin-walled, small-diameter pipe welding machines, which aims to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an automatic feeding device for a thin-walled small-diameter pipe welding machine, which aims to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic feeding device for a thin-walled small-diameter pipe welding machine includes a main support base, on which a guide plate for feeding small-diameter pipes is provided. A first welding worktable and a second welding worktable for welding small-diameter pipes are provided on both sides of the guide plate, and a welding machine is mounted on the first and second welding worktables. The device also includes: An automatic feeding mechanism is installed on a main support base and a guide plate to feed and transport small-diameter pipes one by one. The automatic feeding mechanism includes a fixed plate and a pusher plate for driving the feeding one by one. The fixed plate is fixedly installed on the guide plate. A pusher plate for continuous feeding is movably installed at the interval between adjacent fixed plates. A first inclined surface is opened on one side of the fixed plate, and a second inclined surface is opened on one side of the pusher plate. A conveyor belt for continuous feeding is provided on one side of the top of the fixed plate. A vertical feeding mechanism is installed on a main support base and is used to vertically unload small-diameter pipes. The vertical feeding mechanism includes a second unloading slope for vertical unloading drive. The second unloading slope is movably installed on a first fixed base. A second unloading trough for unloading is opened on the second unloading slope. A limiting block for unloading each pipe is provided above the second unloading trough. A horizontal feeding mechanism is installed on the main support base and is used to perform horizontal feeding of small-diameter pipes. The horizontal feeding mechanism includes a first feeding push plate for horizontal feeding drive. The first feeding push plate has a first feeding groove for feeding and is limited and movable on the lower side of the first feeding slope.

[0007] As a further embodiment of the present invention, the automatic feeding mechanism further includes a drive linkage and a turntable for driving multiple pusher plates to reciprocate feeding. The pusher plates and the fixed plate on one side thereof are arranged in a stepped manner. The pusher plates are all fixedly installed on the docking plate. The bottom of the docking plate is rotatably connected to one end of the drive linkage through a first connecting shaft. The other end of the drive linkage is rotatably installed on the turntable through a second connecting shaft.

[0008] As a further embodiment of the present invention, the automatic feeding mechanism further includes a first motor for driving the turntable to rotate. The turntable is rotatably mounted inside the main support base via a motor mounting plate, and the output shaft of the first motor is fixedly connected to the center of the turntable. The first motor is fixedly mounted inside the main support base.

[0009] As a further embodiment of the present invention, the automatic feeding mechanism further includes a first roller and a second roller for driving the conveyor belt to feed materials. The first roller and the second roller are both rotatably mounted on the main support base, and the conveyor belt is drivenly connected to the first roller and the second roller. A worm gear is fixedly connected to the rotating shaft of the first roller, and a worm is meshed on the worm gear. The worm is fixedly connected to the output shaft of a second motor, and the second motor is fixedly installed inside the main support base.

[0010] As a further embodiment of the present invention, the vertical feeding mechanism further includes a second driving plate for feeding drive. The second driving plate is slidably connected to the main support seat by a second guide slide rod. One end of the second guide slide rod is fixedly connected to a fourth limiting plate, and the second driving plate is threadedly connected to a second reciprocating screw. One end of the second reciprocating screw is fixedly connected to a third limiting plate, and the other end of the second reciprocating screw is connected to the shaft of the second rotating roller by a second one-way bearing. The second driving plate is fixedly installed on one side of the second feeding slope.

[0011] As a further embodiment of the present invention, the vertical feeding mechanism further includes a second fixed seat for adjusting the small-diameter pipe to be fed vertically. The second fixed seat is provided with a Y-shaped feeding groove for adjusting the vertical feeding of the small-diameter pipe, and a second guide groove is provided at the junction of the second feeding groove and the Y-shaped feeding groove.

[0012] As a further embodiment of the present invention, the horizontal feeding mechanism further includes a first guide chute for horizontal discharge, the first discharge slope is disposed on the side close to the conveyor belt, the first guide chute is provided on the first discharge slope, and the first guide chute is disposed above the first discharge chute.

[0013] As a further embodiment of the present invention, the horizontal feeding mechanism further includes a first driving plate for driving the first feeding pusher plate to move forward and feed material. The first driving plate is fixedly installed on one side of the first feeding pusher plate. The first driving plate is slidably connected to the inside of the main support seat through a first guide slide rod. A second limiting plate is fixedly connected to one end of the first guide slide rod. The first driving plate is threadedly connected to a first reciprocating screw, and a first limiting plate is fixedly connected to one end of the first reciprocating screw. The first reciprocating screw is connected to the rotating shaft of the first roller through a first one-way bearing, and the first reciprocating screw is rotatably installed inside the main support seat.

[0014] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: This invention achieves efficient integration of disordered, random placement and orderly, horizontal, one-by-one material feeding through an automated feeding mechanism. This frees workers from the monotonous, mechanical task of material preparation, requiring only periodic replenishment of pipes to complete the pre-feeding stage. This significantly reduces the labor intensity and technical barriers of manual operation. Simultaneously, the method of arranging the pipes one by one into a horizontal position and smoothly conveying them to the upper conveyor belt ensures the continuity and accuracy of the feeding process, greatly improving the overall operating efficiency of the entire welding production line.

[0015] The vertical feeding mechanism can complete the process connection of "horizontal conveying - vertical feeding - welding", which completely breaks the limitation of "disconnection between conveying and feeding" in the traditional feeding mode, effectively reduces the waiting time between processes and the cost of manual transfer, and significantly improves the continuous operation efficiency of the entire welding production line.

[0016] The horizontal feeding mechanism enables the integrated automated operation of small-diameter pipes from initial sorting and reverse conveying to horizontal feeding into the welding station. This eliminates cumbersome manual transfer, positioning, and pushing processes, significantly improving the continuous operation efficiency of the entire welding production line. At the same time, it greatly reduces the intensity of manual labor, further reducing production costs and operational risks, and providing convenience for optimizing the enterprise's production layout.

[0017] 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

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0019] Figure 2 This is a side view of the structure according to an embodiment of the present invention.

[0020] Figure 3 This is a rear view structural diagram of an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the connection structure of the guide tray in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the connection structure below the guide plate in an embodiment of the present invention.

[0023] Figure 6 This is an exploded structural diagram of the pusher plate connection in an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the connection structure behind the main support base in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the connection structure of the conveyor belt in an embodiment of the present invention.

[0026] Figure 9 for Figure 8 A magnified structural diagram of A in the middle.

[0027] Figure 10 for Figure 8 A magnified structural diagram of B in the diagram.

[0028] Figure 11 This is a schematic diagram of the exploded structure of the second unloading slope connection in an embodiment of the present invention.

[0029] Figure 12 This is an exploded structural diagram of the first unloading slope connection in an embodiment of the present invention.

[0030] Reference numerals: 1. Main support base; 2. Guide plate; 3. Small-diameter pipe; 4. Fixing plate; 5. Pushing plate; 6. First inclined plane; 7. Second inclined plane; 8. Connecting plate; 9. Drive connecting rod; 10. First connecting shaft; 11. Second connecting shaft; 12. Turntable; 13. First motor; 14. Motor mounting plate; 15. Conveyor belt; 16. First rotating roller; 17. Worm gear; 18. Worm; 19. Second motor; 20. First one-way bearing; 21. First reciprocating screw; 22. First limiting plate; 23. First guide slide rod; 24. Second limiting plate; 25. 26. First drive plate; 27. First feeding push plate; 28. First feeding groove; 29. ​​First feeding ramp; 30. First guide groove; 31. First welding worktable; 32. Second rotating roller; 33. Second one-way bearing; 34. Second reciprocating screw; 35. Third limiting plate; 36. Second guide slide rod; 37. Fourth limiting plate; 38. Second drive plate; 39. Second feeding ramp; 40. Second feeding groove; 41. Limiting block; 42. First fixed seat; 43. Second guide groove; 44. Y-shaped feeding groove; 45. Second fixed seat; 46. Second welding worktable. Detailed Implementation

[0031] 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.

[0032] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0033] Example 1 See Figures 1-9 An automatic feeding device for a thin-walled small-diameter pipe welding machine includes a main support base 1, a guide plate 2 for feeding small-diameter pipes 3 is provided on the main support base 1, a first welding worktable 30 and a second welding worktable 45 for welding small-diameter pipes 3 are provided on both sides of the guide plate 2, and a welding machine is provided on the first welding worktable 30 and the second welding worktable 45. The device also includes: An automatic feeding mechanism is installed on the main support base 1 and the guide plate 2. It is used to feed and transport small-diameter pipes 3 one by one. The automatic feeding mechanism includes a fixed plate 4 and a pusher plate 5 for driving the feeding one by one. The fixed plate 4 is fixedly installed on the guide plate 2. The pusher plate 5 for continuous feeding is movably installed at the interval between adjacent fixed plates 4. A first inclined surface 6 is opened on one side of the fixed plate 4, and a second inclined surface 7 is opened on one side of the pusher plate 5. A conveyor belt 15 for continuous feeding is provided on one side of the top of the fixed plate 4.

[0034] Furthermore, the automatic feeding mechanism also includes a drive linkage 9 and a turntable 12 for driving multiple pusher plates 5 to reciprocate feeding. The pusher plates 5 and the fixed plate 4 on one side of them are arranged in a stepped manner. The pusher plates 5 are all fixedly installed on the docking plate 8. The bottom of the docking plate 8 is rotatably connected to one end of the drive linkage 9 through the first connecting shaft 10. The other end of the drive linkage 9 is rotatably installed on the turntable 12 through the second connecting shaft 11.

[0035] Furthermore, the automatic feeding mechanism also includes a first motor 13 for driving the turntable 12 to rotate. The turntable 12 is rotatably mounted inside the main support base 1 via a motor mounting plate 14, and the center of the turntable 12 is fixedly connected to the output shaft of the first motor 13. The first motor 13 is fixedly mounted inside the main support base 1.

[0036] Furthermore, the automatic feeding mechanism also includes a first roller 16 and a second roller 31 for driving the conveyor belt 15 to convey materials. The first roller 16 and the second roller 31 are both rotatably mounted on the main support base 1, and the conveyor belt 15 is drivenly connected to the first roller 16 and the second roller 31. A worm gear 17 is fixedly connected to the rotating shaft of the first roller 16, and a worm 18 is meshed on the worm gear 17. The worm 18 is fixedly connected to the output shaft of the second motor 19, and the second motor 19 is fixedly installed inside the main support base 1.

[0037] Preferably, when feeding small-diameter pipes 3, multiple small-diameter pipes 3 can be placed on the guide plate 2 without considering the placement orientation of the small-diameter pipes 3. When feeding is driven, the output shaft of the first motor 13 drives the turntable 12 to rotate. Under the transmission connection of the drive linkage 9, multiple push plates 5 can be driven to move up and down reciprocally. Thus, under the inclined feeding action of the second inclined surface 7 on the push plate 5 and the inclined action of the first inclined surface 6 on the fixed plate 4, multiple small-diameter pipes 3 can be gradually raised and sent to the conveyor belt 15 above for conveying.

[0038] The conveyor belt 15 can rotate in the forward or reverse direction as needed for vertical or horizontal feeding. Specifically, the output shaft of the second motor 19 drives the worm gear 18 to rotate. Under the meshing connection between the worm gear 18 and the worm wheel 17, the first roller 16 is driven to rotate in the forward or reverse direction. Thus, under the synchronous driving action of the second roller 31, the conveyor belt 15 can be driven to transport materials.

[0039] By combining the random placement of pipes with the orderly, sequential feeding, this highly efficient process eliminates the tedious pre-processing required by traditional feeding equipment, which necessitates operators orienting, positioning, and neatly arranging small-diameter pipes. This improvement removes the high-intensity, repetitive labor of manual tray placement, freeing workers from the monotonous, mechanical task of preparing for feeding. The pre-feeding process can be completed simply by periodically replenishing the pipes, significantly reducing the labor intensity and technical threshold of manual operation. At the same time, the method of arranging the pipes one by one into a horizontal position and smoothly conveying them to the upper conveyor belt ensures the continuity and accuracy of the feeding process, greatly improving the overall operating efficiency of the entire welding production line.

[0040] Example 2 like Figures 1 to 11 As shown, this embodiment, based on embodiment 1, also includes a vertical feeding mechanism, which is installed on the main support base 1 and is used to vertically unload the small-diameter pipe 3 being conveyed. The vertical feeding mechanism includes a second unloading slope 38 for vertical unloading drive. The second unloading slope 38 is movably installed on the first fixed base 41. A second unloading groove 39 for unloading is provided on the second unloading slope 38. A limiting block 40 for unloading one by one is provided above the second unloading groove 39.

[0041] Furthermore, the vertical feeding mechanism also includes a second drive plate 37 for unloading drive. The second drive plate 37 is slidably connected to the main support base 1 via a second guide slide rod 35. One end of the second guide slide rod 35 is fixedly connected to a fourth limiting plate 36, and the second drive plate 37 is threadedly connected to a second reciprocating screw 33. One end of the second reciprocating screw 33 is fixedly connected to a third limiting plate 34, and the other end of the second reciprocating screw 33 is connected to the rotating shaft of the second roller 31 via a second one-way bearing 32. The second drive plate 37 is fixedly installed on one side of the second unloading slope 38.

[0042] Furthermore, the vertical feeding mechanism also includes a second fixed seat 44 for adjusting the small-diameter pipe 3 to be fed vertically. The second fixed seat 44 is provided with a Y-shaped feeding groove 43 for adjusting the vertical feeding of the small-diameter pipe 3. A second guide groove 42 is provided at the joint between the second feeding groove 39 and the Y-shaped feeding groove 43.

[0043] Preferably, in this embodiment, when the small-diameter pipe 3 needs to be vertically fed, the output shaft of the second motor 19 is driven to rotate in the forward direction. At this time, the conveyor belt 15 is conveyed towards the second discharge slope 38 under the action of the first rotating roller 16 and the second rotating roller 31. Under the unidirectional action of the first one-way bearing 20, the first reciprocating screw 21 is not driven to rotate accordingly. However, under the unidirectional action of the second one-way bearing 32, the second reciprocating screw 33 can be driven to rotate continuously.

[0044] At this time, under the threaded connection between the second drive plate 37 and the second reciprocating screw 33 and the guiding action of the second guide slide 35, the second drive plate 37 can be driven to move the second discharge slope 38 back and forth. That is, when the small diameter pipe 3 falling into the second discharge slope 38 moves towards the second discharge trough 39 under the action of the inclined plane, the second discharge trough 39 stores a small diameter pipe 3. At this time, the second discharge trough 39 on the second discharge slope 38 is set away from the second guide trough 42. When the second discharge trough 39 on the second discharge slope 38 is aligned with the second guide trough 42 by the drive of the second drive plate 37, the small diameter pipe 3 in the second discharge trough 39 can fall into the Y-shaped discharge trough 43 through the second guide trough 42. Under the adjustment action of the Y-shaped discharge trough 43, the small diameter pipe 3 can be vertically fed to the second welding worktable 45 below. The second welding worktable 45 is equipped with a welding machine for welding.

[0045] By precisely linking the conveyor belt's transport and vertical feeding actions, the integrated automated connection of small-diameter pipes from horizontal transport to vertical feeding and welding is achieved. The process of "horizontal transport - vertical feeding - welding" can be completed without manual intervention, completely breaking the limitation of "disconnection between transport and feeding" in the traditional feeding mode. This effectively reduces the waiting time between processes and the cost of manual transfer, and significantly improves the continuous operation efficiency of the entire welding production line.

[0046] Example 3 like Figures 1-12 As shown, this embodiment, based on the above embodiment, also includes a horizontal feeding mechanism, which is installed on the main support 1 and is used to perform horizontal feeding of the small-diameter pipe 3 being conveyed. The horizontal feeding mechanism includes a first feeding push plate 26 for horizontal feeding drive. The first feeding push plate 26 has a first feeding groove 27 for feeding, and the first feeding push plate 26 is limited and movablely installed on the lower side of the first feeding slope 28.

[0047] Furthermore, the horizontal feeding mechanism also includes a first guide chute 29 for horizontal discharge, and a first discharge slope 28 is disposed on one side close to the conveyor belt 15. The first guide chute 29 is provided on the first discharge slope 28, and the first guide chute 29 is located above the first discharge chute 27.

[0048] Furthermore, the horizontal feeding mechanism also includes a first drive plate 25 for driving the first unloading push plate 26 to move and unload materials. The first drive plate 25 is fixedly installed on one side of the first unloading push plate 26. The first drive plate 25 is slidably connected to the inside of the main support base 1 through the first guide slide rod 23. One end of the first guide slide rod 23 is fixedly connected to a second limiting plate 24. The first drive plate 25 is threadedly connected to the first reciprocating screw 21. The first reciprocating screw 21 is connected to the rotating shaft of the first roller 16 through the first one-way bearing 20, and the first reciprocating screw 21 is rotatably installed inside the main support base 1.

[0049] Preferably, in this embodiment, when the small-diameter pipe 3 needs to be horizontally fed, the output shaft of the second motor 19 is driven to rotate in the opposite direction. At this time, the conveyor belt 15 is conveyed towards the first discharge slope 28 under the action of the first roller 16 and the second roller 31. Under the unidirectional action of the first one-way bearing 20, the second reciprocating screw 33 is not driven to rotate accordingly. However, under the unidirectional action of the first one-way bearing 20, the first reciprocating screw 21 can be driven to rotate continuously.

[0050] At this time, under the threaded connection between the first drive plate 25 and the first reciprocating screw 21 and the guiding action of the first guide slide 23, the first drive plate 25 can be driven to drive the first unloading push plate 26 to perform reciprocating movement. That is, when the small-diameter pipe 3 falling into the first unloading slope 28 moves towards the first guide groove 29 under the action of the slope, the first guide groove 29 stores a small-diameter pipe 3. At this time, the first unloading groove 27 on the first unloading push plate 26 is set away from the first guide groove 29. When the first unloading groove 27 on the first unloading push plate 26 and the first guide groove 29 are in the same position due to the drive of the first drive plate 25, the small-diameter pipe 3 in the first guide groove 29 can fall into the first welding workbench 30 below for loading. The first welding workbench 30 is equipped with a welding machine for welding.

[0051] This seamless horizontal feeding system significantly improves production efficiency and eliminates process interruptions. By precisely linking the reverse conveyor belt with the horizontal feeding mechanism, it breaks through the limitations of traditional "staged operation" in horizontal feeding, realizing integrated automated operation of small-diameter pipes from initial preparation and reverse conveying to horizontal delivery to the welding station. This eliminates cumbersome manual transfer, positioning, and pushing processes, greatly improving the continuous operation efficiency of the entire welding production line. At the same time, it significantly reduces the intensity of manual labor, further reducing production costs and operational risks, and providing convenience for optimizing the enterprise's production layout.

[0052] It should be noted that the components in this application are all general standard parts or parts known to those skilled in the art, which effectively solve the technical problems raised in the background art.

[0053] The above description is merely 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 automatic feeding device for a thin-walled small-diameter pipe welding machine, comprising a main support base (1), characterized in that, The main support base (1) is provided with a guide plate (2) for feeding small-diameter pipes (3). A first welding workbench (30) and a second welding workbench (45) for welding small-diameter pipes (3) are provided on both sides of the guide plate (2). Welding machines are provided on the first welding workbench (30) and the second welding workbench (45). The system also includes: An automatic feeding mechanism is installed on the main support base (1) and the guide plate (2) to feed and transport small-diameter pipes (3) one by one. The automatic feeding mechanism includes a fixed plate (4) and a pusher plate (5) for feeding one by one. The fixed plate (4) is fixedly installed on the guide plate (2). A pusher plate (5) for continuous feeding is movably installed at the interval between adjacent fixed plates (4). A first inclined surface (6) is opened on one side of the fixed plate (4). A second inclined surface (7) is opened on one side of the pusher plate (5). A conveyor belt (15) for continuous feeding is provided on one side of the top of the fixed plate (4). A vertical feeding mechanism is installed on the main support base (1) and is used to vertically unload the small-diameter pipe (3) being conveyed. The vertical feeding mechanism includes a second unloading slope (38) for vertical unloading drive. The second unloading slope (38) is movably installed on the first fixed base (41). A second unloading groove (39) for unloading is opened on the second unloading slope (38). A limiting block (40) for unloading each piece of material is provided above the second unloading groove (39). A horizontal feeding mechanism is installed on the main support base (1) for horizontally feeding the small-diameter pipe (3) being conveyed. The horizontal feeding mechanism includes a first feeding push plate (26) for horizontal feeding drive. A first feeding groove (27) for feeding is provided on the first feeding push plate (26), and the first feeding push plate (26) is limited and movablely installed on the lower side of the first feeding slope (28).

2. The automatic feeding device for a thin-walled small-diameter pipe welding machine according to claim 1, characterized in that, The automatic feeding mechanism also includes a drive link (9) and a turntable (12) for driving multiple pusher plates (5) to reciprocate feeding. The pusher plates (5) and the fixed plate (4) on one side of them are arranged in a stepped manner. The pusher plates (5) are all fixedly installed on the docking plate (8). The bottom of the docking plate (8) is rotatably connected to one end of the drive link (9) through the first connecting shaft (10). The other end of the drive link (9) is rotatably installed on the turntable (12) through the second connecting shaft (11).

3. The automatic feeding device for a thin-walled small-diameter pipe welding machine according to claim 2, characterized in that, The automatic feeding mechanism also includes a first motor (13) for driving the turntable (12) to rotate. The turntable (12) is rotatably mounted inside the main support base (1) via a motor mounting plate (14), and the center of the turntable (12) is fixedly connected to the output shaft of the first motor (13). The first motor (13) is fixedly mounted inside the main support base (1).

4. The automatic feeding device for a thin-walled small-diameter pipe welding machine according to claim 3, characterized in that, The automatic feeding mechanism also includes a first roller (16) and a second roller (31) for driving the conveyor belt (15) to feed materials. The first roller (16) and the second roller (31) are both rotatably mounted on the main support base (1), and the conveyor belt (15) is connected to the first roller (16) and the second roller (31). A worm wheel (17) is fixedly connected to the shaft of the first roller (16), and a worm (18) is meshed on the worm wheel (17). The worm (18) is fixedly connected to the output shaft of the second motor (19), and the second motor (19) is fixedly installed inside the main support base (1).

5. The automatic feeding device for a thin-walled small-diameter pipe welding machine according to claim 1, characterized in that, The vertical feeding mechanism also includes a second drive plate (37) for feeding drive. The second drive plate (37) is slidably connected to the main support base (1) by a second guide slide rod (35). One end of the second guide slide rod (35) is fixedly connected to a fourth limiting plate (36), and the second drive plate (37) is threadedly connected to a second reciprocating screw (33). One end of the second reciprocating screw (33) is fixedly connected to a third limiting plate (34), and the other end of the second reciprocating screw (33) is connected to the shaft of the second roller (31) through a second one-way bearing (32). The second drive plate (37) is fixedly installed on one side of the second feeding slope (38).

6. The automatic feeding device for a thin-walled small-diameter pipe welding machine according to claim 5, characterized in that, The vertical feeding mechanism also includes a second fixed seat (44) for adjusting the small diameter pipe (3) to be fed vertically. The second fixed seat (44) is provided with a Y-shaped feeding groove (43) for adjusting the small diameter pipe (3) to be fed vertically. A second guide groove (42) is provided at the junction of the second feeding groove (39) and the Y-shaped feeding groove (43).

7. The automatic feeding device for a thin-walled small-diameter pipe welding machine according to claim 1, characterized in that, The horizontal feeding mechanism also includes a first guide trough (29) for horizontal discharge. The first discharge slope (28) is located on one side close to the conveyor belt (15). The first guide trough (29) is provided on the first discharge slope (28), and the first guide trough (29) is located above the first discharge trough (27).

8. The automatic feeding device for a thin-walled small-diameter pipe welding machine according to claim 7, characterized in that, The horizontal feeding mechanism also includes a first drive plate (25) for driving the first feeding push plate (26) to move and feed materials. The first drive plate (25) is fixedly installed on one side of the first feeding push plate (26). The first drive plate (25) is slidably connected to the inside of the main support base (1) through the first guide slide rod (23). One end of the first guide slide rod (23) is fixedly connected to the second limiting plate (24). The first drive plate (25) is threadedly connected to the first reciprocating screw (21), and one end of the first reciprocating screw (21) is fixedly connected to the first limiting plate (22). The first reciprocating screw (21) is connected to the rotating shaft of the first roller (16) through the first one-way bearing (20), and the first reciprocating screw (21) is rotatably installed inside the main support base (1).

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