Welding wire feeding mechanism

Abstract

The utility model discloses a welding wire feeding mechanism, which relates to the technical field of welding wire feeding and comprises a fixing box, two groups of driving mechanisms are arranged in an inner cavity of the fixing box, each group of driving mechanism comprises a first driving component and a second driving component, and each of the first driving component and the second driving component comprises a fixing plate. First servo motors are fixedly connected to one sides of the fixing plates correspondingly, rotating rollers are fixedly connected to the output ends of the first servo motors correspondingly, a plurality of mounting blocks are fixedly connected to the outer sides of the rotating rollers correspondingly, connecting blocks are fixedly connected to one ends of the mounting blocks correspondingly, and mounting bases are placed on the outer sides of the connecting blocks correspondingly. According to the welding wire feeding mechanism, by arranging the first driving assembly, the second driving assembly and the guide wheels, welding wires of various different diameters can be conveyed.

Description

Technical Field

[0001] The utility model relates to the technical field of wire feeding, in particular to a wire feeding mechanism for welding wire. Background Technique

[0002] Wire feeding is a very important operation link in the welding process. An automatic wire feeder is a mechanized wire feeding device driven automatically, which is mainly applied to automatic wire feeding in manual welding, automatic wire feeding in automatic argon arc welding, automatic wire feeding in plasma welding, and automatic wire feeding in laser welding. When the existing wire feeding mechanisms for welding wire are in use, they are generally relatively fixed and can only feed wires of one specification diameter, reducing the adaptability of the wire feeding mechanism. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a wire feeding mechanism for welding wire, which solves the problems put forward in the above background technique.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A wire feeding mechanism for welding wire, including a fixed box. There are two groups of driving mechanisms arranged in the inner cavity of the fixed box, and each group of driving mechanisms includes a first driving component and a second driving component. The first driving component and the second driving component both include a fixing plate. On one side of each fixing plate, a first servo motor is fixedly connected. The output ends of the first servo motors are fixedly connected with rotating rollers. A plurality of mounting blocks are fixedly connected to the outer sides of the rotating rollers. One end of each mounting block is fixedly connected with a connecting block. Mounting seats are placed on the outer sides of the connecting blocks. Connecting grooves are respectively opened inside the mounting seats. Rotating columns are rotatably connected inside the connecting grooves. Guide wheels are fixedly sleeved on the outer sides of the rotating columns. Side grooves are respectively opened on both sides of the fixed box.

[0005] Preferably, one end of each rotating column extends to one side of the mounting seat and is fixedly connected with a rectangular socket. On one side of each fixing plate, a driving box is fixedly connected. One side of the inner cavity of each driving box is rotatably connected with a driving shaft. A driving rod is slidably connected inside each driving shaft. Spline grooves are respectively opened inside the driving shafts and on the outer sides of the driving rods. Spline parts are respectively installed inside the spline grooves on the outer sides of the driving rods. One end of each driving rod extends to the outer side of the driving shaft and is fixedly connected with a rectangular block. Two electric telescopic rods are respectively fixedly connected to the outer sides of the driving shafts. The telescopic ends of the electric telescopic rods are fixedly connected with one end of the rectangular block, so as to be able to connect the rectangular block with a plurality of guide wheels.

[0006] Preferably, one end of each rectangular block is inserted into a rectangular groove opened on one side of the rectangular socket.

[0007] Preferably, a second servo motor is fixedly connected to one side of the inner cavity of the drive box and above the drive shaft, and belt pulleys connected by belt drive are fixedly sleeved on the output end of the second servo motor and the outer side of the drive shaft respectively.

[0008] Preferably, a clamping groove is formed on one side of each mounting seat, and the connecting blocks are all located inside the clamping grooves. A bidirectional ball screw is rotatably connected inside each connecting block. Plug posts are threadedly connected to positions on the outer side of the bidirectional ball screw where the thread directions are opposite. Slots are formed on both sides of the clamping groove inside the mounting seat, and one end of each plug post extends into the slot. Worms are fixedly sleeved on the outer side of each bidirectional ball screw. Worms that are in transmission connection with the worms are rotatably connected inside each connecting block. One end of each worm extends into the mounting block. A rotating rod is rotatably connected inside each mounting block. Bevel gears that are meshed with each other are fixedly sleeved on the outer sides of the rotating rod and the worm. One end of each rotating rod extends to the outside of the mounting block.

[0009] Preferably, a moving groove is formed on one side of the inner cavity of the fixed box and on one side of the first driving assembly. A third servo motor is fixedly connected to the bottom of the inner cavity of the moving groove. A lead screw is rotatably connected to the top of the inner cavity of the moving groove. The output end of the third servo motor is connected to the bottom end of the lead screw. A moving block is threadedly connected to the outer side of the lead screw. One end of each moving block extends into the fixed box and is connected to one side of the fixing plate. One side of the fixing plate in the second driving assembly is fixedly connected to one side of the inner cavity of the fixed box.

[0010] The utility model provides a wire feeding mechanism for welding wire, which has the following beneficial effects:

[0011] 1. For this wire feeding mechanism for welding wire, by arranging a first driving assembly, a second driving assembly and a guide wheel, the welding wire is inserted into the fixed box through the side groove, and then passes through another side groove and extends out of the fixed box. Then, a guide wheel matching the diameter of the welding wire is selected for use. At this time, the telescopic end of the electric telescopic rod drives one end of the rectangular block to move out of the rectangular groove on one side of the rectangular socket. Then, the output end of the first servo motor drives the rotating roller to rotate, so that the rotating roller drives the mounting block, the mounting seat and the guide wheel to rotate to one end of the drive shaft. Then, the telescopic end of the electric telescopic rod pushes one end of the rectangular block to insert into the rectangular groove. Then, the output end of the third servo motor drives the lead screw to rotate, so that the lead screw drives the moving block to move downward, so that the moving block drives the first driving assembly to move downward, so that the two guide wheels are in contact with the outer side of the welding wire. Then, the output end of the second servo motor drives the drive shaft to rotate through the belt pulley, so that the drive shaft drives the drive rod to rotate through the spline groove and the spline part, so that the drive rod drives the rectangular socket to drive the rotating column to rotate through the rectangular block, so that the rotating column drives the guide wheel to rotate, so that the two guide wheels drive the welding wire to move, and the welding wire of various different diameters can be conveyed.

[0012] 2. The wire feeding mechanism of the welding wire, by providing an installation block, an installation seat and a guide wheel. When the guide wheel needs to be replaced, the operator rotates the rotating rod, so that the rotating rod drives the bevel gear to drive the worm to rotate, so that the worm drives the worm wheel to rotate, so that the worm wheel drives the bidirectional ball screw to rotate, so that the worm wheel drives the plug to move, so that the plug moves out of the inside of the slot, and then the installation seat is removed from one side of the connecting block, and then the installation seat corresponding to the new guide wheel is placed on one side of the connecting block. Then the operator resets and rotates the rotating rod, so that the rotating rod drives the worm to rotate back through the bevel gear, so that the worm drives the bidirectional ball screw to rotate back through the worm wheel, so that the bidirectional ball screw drives one end of the plug to insert into the inside of the slot, thereby installing the installation seat on the installation block. The appropriate guide wheel can be selected for installation according to the working needs to convey the welding wire matching the guide wheel. Description of the Drawings

[0013] Figure 1 Schematic diagram of the internal structure of the present utility model;

[0014] Figure 2 Schematic diagram of the internal structure of the side view of the fixed box of the present utility model;

[0015] Figure 3 Schematic diagram of the partial internal structure of the side view connection of the installation block and the installation seat of the present utility model;

[0016] Figure 4 Of the present utility model Figure 1 Enlarged view of part A.

[0017] In the figure: 1. Fixed box; 2. First drive assembly; 3. Second drive assembly; 4. Fixed plate; 5. First servo motor; 6. Rotating roller; 7. Installation block; 8. Installation seat; 9. Connecting block; 10. Bidirectional ball screw; 11. Plug; 12. Slot; 13. Worm wheel; 14. Worm; 15. Rotating rod; 16. Bevel gear; 17. Connecting groove; 18. Drive box; 19. Second servo motor; 20. Drive shaft; 21. Pulley; 22. Drive rod; 23. Spline groove; 24. Spline piece; 25. Electric telescopic rod; 26. Rectangular block; 27. Rectangular socket; 28. Guide wheel; 29. Side groove; 30. Moving groove; 31. Lead screw; 32. Third servo motor; 33. Moving block; 34. Rotating column. Detailed Description of the Preferred Embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] Embodiment 1

[0020] Please refer to Figures 1 to 4 Figures 1 to 4 , the present utility model provides a technical solution: a wire feeding mechanism for welding wire, including a fixed box 1. There are two groups of driving mechanisms arranged in the inner cavity of the fixed box 1, and each group of driving mechanisms includes a first driving component 2 and a second driving component 3. Both the first driving component 2 and the second driving component 3 include a fixing plate 4. On one side of each fixing plate 4, a first servo motor 5 is fixedly connected. The output ends of the first servo motors 5 are fixedly connected with rotating rollers 6. A plurality of mounting blocks 7 are fixedly connected to the outer sides of the rotating rollers 6. One end of each mounting block 7 is fixedly connected with a connecting block 9. Mounting seats 8 are placed on the outer sides of the connecting blocks 9. Connecting grooves 17 are respectively formed inside the mounting seats 8. Rotating columns 34 are rotatably connected inside the connecting grooves 17. Guide wheels 28 are fixedly sleeved on the outer sides of the rotating columns 34. Side grooves 29 are respectively formed on both sides of the fixed box 1.

[0021] One end of each rotating column 34 extends to one side of the mounting seat 8 and is fixedly connected with a rectangular socket 27. On one side of each fixing plate 4, a driving box 18 is fixedly connected. One side of the inner cavity of the driving box 18 is rotatably connected with a driving shaft 20. A driving rod 22 is slidably connected inside the driving shaft 20. Spline grooves 23 are respectively formed inside the driving shafts 20 and on the outer sides of the driving rods 22. Spline parts 24 are respectively installed inside the spline grooves 23 on the outer sides of the driving rods 22. One end of each driving rod 22 extends to the outside of the driving shaft 20 and is fixedly connected with a rectangular block 26. Two electric telescopic rods 25 are respectively fixedly connected to the outer sides of the driving shafts 20. The telescopic ends of the electric telescopic rods 25 are fixedly connected with one end of the rectangular block 26, so as to be able to connect the rectangular block 26 with a plurality of guide wheels 28. The guide grooves formed on the outer sides of the guide wheels 28 on the first driving component 2 are all different, so as to convey guide wires with different diameters. The guide grooves formed on the outer sides of the guide wheels 28 on the first driving component 2 and the second driving component 3 are all the same.

[0022] One end of each rectangular block 26 is inserted into the rectangular groove formed on one side of the rectangular socket 27, so that the rectangular block 26 can be inserted into the rectangular groove to connect the driving shaft 20 with the rotating column 34.

[0023] On one side of the inner cavity of the driving box 18 and above the driving shaft 20, a second servo motor 19 is fixedly connected. Pulley wheels 21 connected by belt transmission are respectively fixedly sleeved on the output ends of the second servo motors 19 and the outer sides of the driving shafts 20, which can drive the rotating column 34 to drive the guide wheel 28 to rotate.

[0024] On one side of the mounting base 8, clamping grooves are provided, and the connecting blocks 9 are all located inside the clamping grooves. Inside the connecting blocks 9, bidirectional ball screws 10 are rotatably connected. At positions with opposite thread directions on the outer side of the bidirectional ball screws 10, plug posts 11 are threadedly connected. Inside the mounting base 8 and on both sides of the clamping grooves, slot holes 12 are provided. One ends of the plug posts 11 all extend into the slot holes 12. On the outer side of the bidirectional ball screws 10, worm gears 13 are fixedly sleeved. Inside the connecting blocks 9, worm shafts 14 that are drivingly connected to the worm gears 13 are rotatably connected. One ends of the worm shafts 14 all extend into the mounting block 7. Inside the mounting block 7, rotating rods 15 are rotatably connected. On the outer sides of the rotating rods 15 and the worm shafts 14, meshing bevel gears 16 are fixedly sleeved. One ends of the rotating rods 15 all extend to the outside of the mounting block 7, enabling the mounting base 8 to be mounted on the mounting block 7.

[0025] Embodiment 2

[0026] Please refer to Figure 1, the present utility model provides a technical solution: moving grooves 30 are respectively opened on one side of the inner cavity of the fixed box 1 and on one side of the first driving component 2. Third servo motors 32 are fixedly connected to the bottoms of the inner cavities of the moving grooves 30. The tops of the inner cavities of the moving grooves 30 are respectively rotatably connected with lead screws 31. The output ends of the third servo motors 32 are respectively connected to the bottoms of the lead screws 31. Moving blocks 33 are respectively threadedly connected to the outer sides of the lead screws 31. One ends of the moving blocks 33 respectively extend into the fixed box 1 and are connected to one side of the fixing plate 4. One sides of the fixing plates 4 in the second driving component 3 are respectively fixedly connected to one side of the inner cavity of the fixed box 1, which can adjust the position of the first driving component 2 for wire threading operation. In summary, when using this wire feeding mechanism for welding wire, the welding wire is passed through the side groove 29 into the fixed box 1, then passes through another side groove 29 and exits the outside of the fixed box 1. Then, a guide wheel 28 matching the diameter of the welding wire is selected for use. At this time, the telescopic end of the electric telescopic rod 25 drives one end of the rectangular block 26 to move out of the rectangular groove on one side of the rectangular socket 27. Then, the output end of the first servo motor 5 drives the rotating roller 6 to rotate, so that the rotating roller 6 drives the mounting block 7, the mounting seat 8 and the guide wheel 28 to rotate to one end of the driving shaft 20. Then, the telescopic end of the electric telescopic rod 25 pushes one end of the rectangular block 26 to insert into the rectangular groove. Then, the output end of the third servo motor 32 drives the lead screw 31 to rotate, so that the lead screw 31 drives the moving block 33 to move downward, so that the moving block 33 drives the first driving component 2 to move downward, so that the two guide wheels 28 are in contact with the outer side of the welding wire. Then, the output end of the second servo motor 19 drives the driving shaft 20 to rotate through the pulley 21, so that the driving shaft 20 drives the driving rod 22 to rotate through the spline groove 23 and the spline part 24, so that the driving rod 22 drives the rectangular socket 27 to drive the rotating column 34 to rotate through the rectangular block 26, so that the rotating column 34 drives the guide wheel 28 to rotate, so that the two guide wheels 28 drive the welding wire to move and convey the welding wire. When the guide wheel 28 needs to be replaced, the operator rotates the rotating rod 15, so that the rotating rod 15 drives the bevel gear 16 to drive the worm 14 to rotate, so that the worm 14 drives the worm gear 13 to rotate, so that the worm gear 13 drives the bidirectional ball screw 10 to rotate, so that the worm gear 13 drives the plug post 11 to move, so that the plug post 11 moves out of the slot 12. Then, the mounting seat 8 is removed from one side of the connecting block 9. Then, the mounting seat 8 corresponding to the new guide wheel 28 is placed on one side of the connecting block 9. Then, the operator resets and rotates the rotating rod 15, so that the rotating rod 15 drives the worm 14 to rotate in place through the bevel gear 16, so that the worm 14 drives the bidirectional ball screw 10 to rotate in place through the worm gear 13, so that the bidirectional ball screw 10 drives one end of the plug post 11 to insert into the slot 12, thereby installing the mounting seat 8 on the mounting block 7.

[0027] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A wire feeding mechanism for welding wire, comprising a fixed box (1), characterized in that: Two sets of driving mechanisms are arranged in the inner cavity of the fixed box (1), and each set of driving mechanisms includes a first driving component (2) and a second driving component (3). Both the first driving component (2) and the second driving component (3) include a fixed plate (4). On one side of each fixed plate (4), a first servo motor (5) is fixedly connected. The output ends of the first servo motors (5) are fixedly connected with rotating rollers (6). A plurality of mounting blocks (7) are fixedly connected to the outer sides of the rotating rollers (6). One end of each mounting block (7) is fixedly connected with a connecting block (9). Mounting seats (8) are placed on the outer sides of the connecting blocks (9). Connecting grooves (17) are formed inside the mounting seats (8). Rotating columns (34) are rotatably connected inside the connecting grooves (17). Guide wheels (28) are fixedly sleeved on the outer sides of the rotating columns (34). Side grooves (29) are formed on both sides of the fixed box (1).

2. The wire feeding mechanism according to claim 1, characterized in that: One end of each rotating column (34) extends to one side of the mounting seat (8) and is fixedly connected with a rectangular socket (27). On one side of each fixed plate (4), a driving box (18) is fixedly connected. One side of the inner cavity of the driving box (18) is rotatably connected with a driving shaft (20). A driving rod (22) is slidably connected inside the driving shaft (20). Spline grooves (23) are formed inside the driving shafts (20) and on the outer sides of the driving rods (22). Spline parts (24) are installed inside the spline grooves (23) on the outer sides of the driving rods (22). One end of each driving rod (22) extends to the outside of the driving shaft (20) and is fixedly connected with a rectangular block (26). Two electric telescopic rods (25) are fixedly connected to the outer sides of the driving shafts (20). The telescopic ends of the electric telescopic rods (25) are fixedly connected with one end of the rectangular block (26) so as to be able to connect the rectangular block (26) with a plurality of guide wheels (28).

3. The wire feeding mechanism according to claim 2, characterized in that: One end of each rectangular block (26) is inserted into a rectangular groove formed on one side of the rectangular socket (27).

4. The wire feeding mechanism according to claim 2, characterized in that: On one side of the inner cavity of the driving box (18) and above the driving shaft (20), a second servo motor (19) is fixedly connected. Pulley wheels (21) connected by a belt are fixedly sleeved on the output ends of the second servo motors (19) and the outer sides of the driving shafts (20).

5. The wire feeding mechanism according to claim 1, characterized in that: On one side of the mounting base (8), a clamping groove is formed, and the connecting blocks (9) are all located inside the clamping groove. A bidirectional ball screw (10) is rotatably connected inside each of the connecting blocks (9). On positions with opposite thread directions on the outer side of the bidirectional ball screw (10), plug posts (11) are threadedly connected. Inside the mounting base (8) and on both sides of the clamping groove, slots (12) are formed. One end of each plug post (11) extends into the slot (12). On the outer side of the bidirectional ball screw (10), worm wheels (13) are fixedly sleeved. Inside each of the connecting blocks (9), a worm (14) that is in transmission connection with the worm wheel (13) is rotatably connected. One end of each worm (14) extends into the mounting block (7). Inside each of the mounting blocks (7), a rotating rod (15) is rotatably connected. On the outer sides of the rotating rod (15) and the worm (14), bevel gears (16) that are meshed with each other are fixedly sleeved. One end of each rotating rod (15) extends to the outside of the mounting block (7).

6. The wire feeding mechanism according to claim 1, characterized in that: On one side of the inner cavity of the fixed box (1) and on one side of the first driving assembly (2), moving grooves (30) are formed. At the bottom of the inner cavity of each moving groove (30), a third servo motor (32) is fixedly connected. At the top of the inner cavity of each moving groove (30), a lead screw (31) is rotatably connected. The output end of each third servo motor (32) is connected to the bottom end of the lead screw (31). On the outer side of each lead screw (31), a moving block (33) is threadedly connected. One end of each moving block (33) extends into the fixed box (1) and is connected to one side of the fixing plate (4). One side of the fixing plate (4) in the second driving assembly (3) is fixedly connected to one side of the inner cavity of the fixed box (1).

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