Wire feeding mechanism of argon arc welding machine

Abstract

The wire feeding mechanism of the argon arc welding machine comprises a mounting plate and a welding wire, fixing plates are fixedly connected to the top and the bottom of one side of the front face of the mounting plate, an electric wire feeding roller set penetrates through the other side of the front face of the mounting plate, and the welding wire is conveyed through the electric wire feeding roller set. The right sides of the opposite sides of the two fixed plates are both fixedly connected with connecting plates, and the sides, away from the electric wire feeding roller set, of the two connecting plates are both fixedly connected with electric push rods. According to the welding wire shaping device, the two shaping clamping seats are arranged, the distance between the two shaping clamping seats is shortened through the two semi-circular pedestals, a welding wire can be clamped between the two wire grooves, and in the welding wire conveying process, the welding wire is limited and straightened through the wire grooves between the two shaping clamping seats, so that the welding wire used when the argon arc welding machine works is in a straight state, and better welding machining is facilitated.

Description

Technical Field

[0001] This utility model relates to a wire feeding mechanism for an argon arc welding machine, belonging to the field of argon arc welding equipment. Background Technology

[0002] Argon arc welding machine is a commonly used electric arc welding equipment. It uses argon gas as a shielding gas and uses the electric arc welding method to join metal materials. The wire feeding mechanism of the argon arc welding machine is a device used to feed the welding wire to the welding gun. Its main function is to continuously feed the welding wire from the wire spool to the welding gun for welding.

[0003] In the prior art, welding wire is fixed on the reel by winding during storage. When the welding wire needs to be fed, the wire reel needs to be rotated to release the wire, and the wire feeding wheel is driven by an external wire feeding motor to feed the wire. However, the welding wire, which has been wound for a long time, is still bent after being pulled out. Since the shape of the welding wire is not corrected during the wire feeding process, the end of the welding wire is bent during the welding process, which affects the welding process.

[0004] In summary, this utility model provides a wire feeding mechanism for an argon arc welding machine to solve the above-mentioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a wire feeding mechanism for an argon arc welding machine, thereby solving the problem mentioned in the background art where the wire shape is not corrected during the wire feeding process, resulting in the wire end being bent during welding.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a wire feeding mechanism for an argon arc welding machine, comprising a mounting plate and welding wire. Fixed plates are fixedly connected to the top and bottom of one side of the mounting plate. An electric wire feeding roller assembly passes through the other side of the mounting plate, and the welding wire is conveyed through the electric wire feeding roller assembly. Connecting plates are fixedly connected to the right sides of the two fixed plates on opposite sides. Electric push rods are fixedly connected to the sides of the two connecting plates away from the electric wire feeding roller assembly. A movable ring is fixedly connected between the output ends of the two electric push rods. Two shaping clamps pass through the inner ring between the two sides of the movable ring. Wire grooves are opened on opposite sides of the two shaping clamps, and wear-resistant layers are embedded inside the two wire grooves. Semi-circular platforms are fixedly connected to the sides of the two shaping clamps that are separated from each other and located on the side of the movable ring away from the electric wire feeding roller assembly. Elastic transmission components are installed between the sides of the two semi-circular platforms that are separated from each other and the sides of the two shaping clamps that are separated from each other.

[0007] Furthermore, the electric wire feeding roller assembly includes two rows of housings, each containing four housings. The two rows of housings are arranged vertically and fixedly connected to the back of the mounting plate. Each housing contains a servo motor, and the output end of each servo motor is fixedly connected to a drive shaft. One end of each drive shaft passes through the housing and the mounting plate and extends to the front of the mounting plate. One end of each drive shaft is fixedly connected to a conveyor roller. The roller surfaces of the vertically arranged conveyor rollers are provided with roller grooves for feeding welding wire.

[0008] Furthermore, the drive shaft is rotatably connected to the mounting plate and the chassis.

[0009] Furthermore, the elastic transmission assembly includes a mounting base and a first movable rod. The mounting base is fixedly connected to the top of a shaping clamp on the side away from the semi-circular platform. The first movable rod is fixedly connected to the top of a semi-circular platform on the side away from the movable ring. A second movable rod is fixedly connected to the top of the mounting base. The top ends of both the first and second movable rods penetrate the bottom of a fixed plate and extend to the top of the fixed plate. Limit blocks are fixedly connected to the top ends of both the first and second movable rods. Compression springs are sleeved on both sides of the bottom of the fixed plate between the top of the semi-circular platform and the shaping clamp, and on the rod surfaces of the first and second movable rods.

[0010] Furthermore, both the first and second movable rods are in contact with the fixed plate, and the two limiting blocks respectively limit the first and second movable rods.

[0011] Furthermore, one end of one of the compression springs is fixedly connected to the top of the semi-circular platform, and the other end of the compression spring is fixedly connected to one side of the bottom of the fixing plate.

[0012] Furthermore, one end of another compression spring is fixedly connected to the top of the mounting base, and the other end of the other compression spring is fixedly connected to the other side of the bottom of the fixing plate.

[0013] The beneficial effects of this utility model are:

[0014] By activating two electric push rods, the movable ring is moved from left to right, and the distance between the two shaping clamps is brought closer by the two semi-circular platforms. The welding wire can then be clamped between the two wire grooves. During the feeding process, the wire is straightened by the wire groove limiter between the two shaping clamps, so that the welding wire used by the argon arc welding machine is straight when it is working, which facilitates better welding processing.

[0015] The wear-resistant layer protects the wire groove, increases its hardness and wear resistance, and thus extends the service life of the wire feeding mechanism. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a three-dimensional schematic diagram of the wire feeding mechanism of an argon arc welding machine according to the present invention;

[0018] Figure 2 This is a schematic front view of the wire feeding mechanism of an argon arc welding machine according to the present invention;

[0019] Figure 3 This is a schematic main sectional view of the wire feeding mechanism of an argon arc welding machine according to the present invention;

[0020] Figure 4 for Figure 3 A schematic side sectional view of the structure of the electric wire feeding roller assembly shown.

[0021] Figure 5 for Figure 3 The schematic side view of the movable ring shown.

[0022] In the diagram: 1. Mounting plate; 2. Fixing plate; 3. Electric wire feeding roller assembly; 4. Welding wire; 5. Shaping clamp; 6. Wire groove; 7. Wear-resistant layer; 8. Elastic transmission assembly; 9. Movable ring; 10. Electric push rod; 11. Connecting plate; 12. Semi-circular platform; 31. Chassis; 32. Servo motor; 33. Drive shaft; 34. Conveyor roller; 81. Mounting base; 82. First movable rod; 83. Second movable rod; 84. Limiting block; 85. Compression spring. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figure 1-5This utility model provides a technical solution: a wire feeding mechanism for an argon arc welding machine, including a mounting plate 1 and a welding wire 4. Fixing plates 2 are fixedly connected to the top and bottom of one side of the mounting plate 1. The mounting plate 1 is fixedly installed on the frame of an external argon arc welding machine. An electric wire feeding roller group 3 passes through the other side of the mounting plate 1, and the welding wire 4 is fed through the electric wire feeding roller group 3. Connecting plates 11 are fixedly connected to the right side of the opposite sides of the two fixing plates 2. Electric push rods 10 are fixedly connected to the side of the two connecting plates 11 away from the electric wire feeding roller group 3. Both electric push rods 10 are connected to an external power source and are equipped with the same power control switch. A movable ring 9 is fixedly connected between the output ends of the two electric push rods 10. Two shaping clamps 5 pass through the inner ring between the two sides of the movable ring 9. Wire grooves 6 are opened on the opposite sides of the two shaping clamps 5. Wear-resistant layers 7 are embedded inside the two wire grooves 6. The wear-resistant layer 7 is made of tempered cast iron, a cast iron alloy that has undergone special heat treatment, and has high strength and excellent wear resistance. It contains tempered martensite and ferrite structures, which can resist wear, impact and fatigue, thereby improving the wear resistance of the wire groove 6. The two shaping clamps 5 are fixedly connected to the side away from each other and the side of the movable ring 9 away from the electric wire feeding roller group 3. The side away from each other of the two semi-circular pedestals 12 is connected to the side away from each other of the two shaping clamps 5. The main cross section of the inner ring of the movable ring 9 is a frustum shape rotated 90°. When the movable ring 9 moves from right to left, it can bring the distance between the two semi-circular pedestals 12 closer, thereby reducing the distance between the two shaping clamps 5. The two elastic transmission components 8, the two shaping clamps 5 and the two semi-circular pedestals 12 are all installed in a mirror symmetrical structure.

[0025] Please see Figure 3-4 The electric wire feeding roller assembly 3 includes two rows of housings 31, each containing four housings 31. The two rows of housings 31 are arranged vertically and fixedly connected to the back of the mounting plate 1. Each housing 31 has a servo motor 32 fixedly connected inside. The servo motor 32 is connected to an external power supply and is equipped with a power control switch. The output ends of the servo motors 32 in the same row rotate in the same direction, while the output ends of the servo motors 32 in the upper and lower rows rotate in opposite directions. This drives the upper and lower sets of conveying rollers 34 to rotate in opposite directions, thereby conveying the welding wire 4. Each servo motor 32 has a drive shaft 33 fixedly connected to its output end. One end of each drive shaft 33 passes through the housing 31 and the mounting plate 1 and extends to the front of the mounting plate 1. Each drive shaft 33 has a conveying roller 34 fixedly connected to its end. The roller surfaces of the vertically arranged conveying rollers 34 have roller grooves that cooperate with the conveying of the welding wire 4. The drive shaft 33 is rotatably connected to the mounting plate 1 and the housing 31.

[0026] Please see Figure 2-3The elastic transmission assembly 8 includes a mounting base 81 and a first movable rod 82. The mounting base 81 is fixedly connected to the top of a shaping clamp 5 on the side away from the semi-circular platform 12. The first movable rod 82 is fixedly connected to the top of a semi-circular platform 12 on the side away from the movable ring 9. A second movable rod 83 is fixedly connected to the top of the mounting base 81. The top ends of both the first movable rod 82 and the second movable rod 83 penetrate the bottom of a fixed plate 2 and extend to the top of the fixed plate 2. Limiting blocks 84 are fixedly connected to the top ends of both the first movable rod 82 and the second movable rod 83. Compression springs 85 are sleeved on both sides of the bottom of the fixed plate 2 between the top of the semi-circular platform 12 and the shaping clamp 5 and on the rod surfaces of the first movable rod 82 and the second movable rod 83.

[0027] Please see Figure 2-3 Both the first movable rod 82 and the second movable rod 83 are in contact with the fixed plate 2. The two limiting blocks 84 respectively limit the first movable rod 82 and the second movable rod 83. One end of a compression spring 85 is fixedly connected to the top of the semi-circular platform 12, and the other end of a compression spring 85 is fixedly connected to one side of the bottom of the fixed plate 2. One end of another compression spring 85 is fixedly connected to the top of the mounting base 81, and the other end of another compression spring 85 is fixedly connected to the other side of the bottom of the fixed plate 2. When the movable ring 9 moves from right to left and performs transmission displacement on the two semi-circular platforms 12 and the two shaping clamps 5, it can be stretched by the compression springs 85 sleeved on the rod surfaces of the first movable rod 82 and the second movable rod 83. When the electric push rod 10 is closed, the output end retracts, and the movable ring 9 is reset, the rebound force of the compression spring 85 can drive the two semi-circular platforms 12 and the two shaping clamps 5 to move and reset.

[0028] Detailed Implementation: By placing the welding wire 4 between the wire grooves 6 on opposite sides of the two shaping clamps 5 and pulling one end of the welding wire 4 between the upper and lower rows of conveyor rollers 34 inside the electric wire feeding roller group 3, the two electric push rods 10 are activated, pushing the movable ring 9 to move from left to right. The main cross-section of the inner ring of the movable ring 9 is a truncated cone shape rotated 90°. When the movable ring 9 moves from right to left, it can bring the distance between the two semi-circular truncated cones 12 closer, thereby reducing the distance between the two shaping clamps 5. The welding wire 4 is clamped by the wire grooves 6 on opposite sides of the two shaping clamps 5. The servo motors 32 inside the electric wire feeding roller group 3 are started. The servo motors 32 drive the conveying rollers 34 to rotate through the transmission shaft 33. The output ends of the servo motors 32 in the same row rotate in the same direction, while the output ends of the servo motors 32 in the upper and lower rows rotate in opposite directions. This drives the upper and lower sets of conveying rollers 34 to rotate in opposite directions, thereby conveying the welding wire 4. During the conveying process, the welding wire 4 is straightened by the wire groove 6 between the two shaping clamps 5, so that the welding wire 4 used by the argon arc welding machine is in a straight state when it is working, which facilitates better welding processing.

[0029] The wear-resistant layer 7 protects the wire groove 6, increases its hardness and wear resistance, and thus extends the service life of the wire feeding mechanism.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wire feeding mechanism for an argon arc welding machine, comprising a mounting plate (1) and welding wire (4), characterized in that: The mounting plate (1) has fixed plates (2) fixedly connected to the top and bottom of one side of its front side. An electric wire feeding roller group (3) passes through the other side of the mounting plate (1). The welding wire (4) is fed through the electric wire feeding roller group (3). A connecting plate (11) is fixedly connected to the right side of the two fixed plates (2) on opposite sides. An electric push rod (10) is fixedly connected to the side of the two connecting plates (11) away from the electric wire feeding roller group (3). A movable ring (9) is fixedly connected between the output ends of the two electric push rods (10). Two shaping clamps (5) are connected between the two sides of the movable ring (9) through an inner ring. Each of the two shaping clamps (5) has a wire groove (6) on its opposite side. Each of the two wire grooves (6) has a wear-resistant layer (7) embedded inside. A semi-circular platform (12) is fixedly connected to the side of the two shaping clamps (5) that is away from the movable ring (9) and away from the electric wire feeding roller group (3). An elastic transmission component (8) is installed between the side of the two semi-circular platforms (12) that is away from the side of the two shaping clamps (5).

2. The wire feeding mechanism of an argon arc welding machine according to claim 1, characterized in that: The electric wire feeding roller assembly (3) includes two rows of housings (31). Each of the two rows of housings (31) contains four housings (31). The two rows of housings (31) are arranged vertically and fixedly connected to the back of the mounting plate (1). Each housing (31) is fixedly connected to a servo motor (32). The output end of each servo motor (32) is fixedly connected to a drive shaft (33). One end of each drive shaft (33) passes through the housing (31) and the mounting plate (1) and extends to the front of the mounting plate (1). One end of each drive shaft (33) is fixedly connected to a conveyor roller (34). The conveyor rollers (34) arranged vertically have grooves on their surfaces to facilitate the conveying of the welding wire (4).

3. The wire feeding mechanism of an argon arc welding machine according to claim 2, characterized in that: The drive shaft (33) is rotatably connected to the mounting plate (1), and the drive shaft (33) is rotatably connected to the chassis (31).

4. The wire feeding mechanism of an argon arc welding machine according to claim 1, characterized in that: The elastic transmission assembly (8) includes a mounting base (81) and a first movable rod (82). The mounting base (81) is fixedly connected to the top of a shaping clamp (5) on the side away from the semi-circular platform (12). The first movable rod (82) is fixedly connected to the top of a semi-circular platform (12) on the side away from the movable ring (9). The top of the mounting base (81) is fixedly connected to a second movable rod (83). The top ends of the first movable rod (82) and the second movable rod (83) both penetrate the bottom of a fixed plate (2) and extend to the top of the fixed plate (2). The top ends of the first movable rod (82) and the second movable rod (83) are both fixedly connected to a limit block (84). Compression springs (85) are sleeved on both sides of the bottom of the fixed plate (2) between the top of the semi-circular platform (12) and the shaping clamp (5) and on the rod surfaces of the first movable rod (82) and the second movable rod (83).

5. The wire feeding mechanism of an argon arc welding machine according to claim 4, characterized in that: The first movable rod (82) and the second movable rod (83) are both in contact with the fixed plate (2), and the two limiting blocks (84) respectively limit the first movable rod (82) and the second movable rod (83).

6. The wire feeding mechanism of an argon arc welding machine according to claim 4, characterized in that: One end of one of the compression springs (85) is fixedly connected to the top of the semi-circular pedestal (12), and the other end of the compression spring (85) is fixedly connected to one side of the bottom of the fixing plate (2).

7. The wire feeding mechanism of an argon arc welding machine according to claim 4, characterized in that: One end of another compression spring (85) is fixedly connected to the top of the mounting base (81), and the other end of another compression spring (85) is fixedly connected to the other side of the bottom of the fixing plate (2).

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