Automatic wire feeding device for welding robot

Abstract

The automatic wire feeding device for the welding robot comprises a wire feeding frame, the back face of the wire feeding frame is fixedly connected with a driving motor in a screwed mode, the outer side of the wire feeding frame is fixedly connected with a front cover in a screwed mode, meanwhile, limiting frames are installed at the two ends of the wire feeding frame, and welding wires are inserted into the wire feeding frame in a penetrating mode. A first wire feeding wheel and a second wire feeding wheel are movably installed in the wire feeding frame, welding wires are arranged on the surfaces of the first wire feeding wheel and the second wire feeding wheel, meanwhile, the surfaces of the welding wires cover a lower pressing wheel, the lower pressing wheel is movably installed on an installation frame at the bottom of a fixing plate, and a stud is fixedly installed on the surface of the fixing plate. According to the automatic wire feeding device for the welding robot, in order to improve friction force between a welding wire and the first wire feeding wheel and friction force between the welding wire and the second wire feeding wheel, the two sets of downward pressing wheels move downwards at the moment, the welding wire is pressed on the surface of the first wire feeding wheel and the surface of the second wire feeding wheel, and efficient and smooth wire feeding work of the welding wire is completed.

Description

Technical Field

[0001] The utility model relates to the field of welding robots, in particular to an automatic wire feeding device for a welding robot. Background Art

[0002] Ordinary welding robots are usually mainly composed of a base, a rotating base, a large arm, a small arm, a welding head and other parts. The rotating base, the large arm and the small arm work together to drive the welding head to perform multi-dimensional movement in space, thereby implementing welding at the joints of the entire plate. A welding wire is provided at the end of the welding head. The high-temperature welding arc generated by the welding head is used to melt the welding wire, and then the entire plate is welded. In the existing technology, the welding wire required for the welding robot is generally wound on a welding wire reel, and the welding wire is in an arc shape. The arc-shaped welding wire is difficult to directly deliver to the welding head and is prone to wire jamming.

[0003] Regarding the patent for welding robots, the Chinese patent with authorization announcement number CN111054998A discloses a wire shaping and wire feeding device for a welding robot; the article includes shaping the arc-shaped welding wire into a straight line, and can automatically feed the wire to the welding head, effectively avoiding problems such as wire jamming, and can greatly improve the welding efficiency and quality of the welding robot.

[0004] When this wire feeding device is feeding wire to the welding robot, the wire diameters of the welding wires are inconsistent due to their different specifications and models. It is impossible to feed welding wires of different sizes, and there are limitations in its use. Utility Model Content

[0005] The purpose of the present utility model is to provide an automatic wire feeding device for a welding robot to solve the defects mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, an automatic wire feeding device for a welding robot is provided, comprising a wire feeding frame, the back of the wire feeding frame is screwed to a fixed drive motor, and the outer side of the wire feeding frame is screwed to a fixed front cover, while limit frames are installed at both ends of the wire feeding frame, and welding wire is inserted into the interior of the wire feeding frame, a first wire feeding wheel and a second wire feeding wheel are movably installed inside the wire feeding frame, and welding wire is provided on the surfaces of the first wire feeding wheel and the second wire feeding wheel, while the surface of the welding wire covers a lower pressure wheel, and the lower pressure wheel is movably installed on the mounting frame at the bottom of the fixed plate, and a stud is fixedly installed on the surface of the fixed plate.

[0007] Preferably, the transverse section of the limit frame is a cross-shaped setting, and the longitudinal section of the limit frame is a rectangular setting. At the same time, two groups of limit frames are symmetrically installed at both ends of the wire feeding frame, and welding wires are inserted into the interior of the two groups of limit frames.

[0008] Preferably, the rotating shaft of the first wire feeding wheel is fixedly connected to the driving motor, and sprockets are installed on the rotating shafts of the first wire feeding wheel and the second wire feeding wheel, and the first wire feeding wheel and the second wire feeding wheel are driven by sprockets and chains.

[0009] Preferably, the surfaces of the first wire feed wheel, the second wire feed wheel and the two groups of lower pressure wheels are all provided with the first wire feed groove, the second wire feed groove and the third wire feed groove, and the diameters of the first wire feed wheel, the second wire feed wheel and the two groups of lower pressure wheels are consistent. At the same time, the first wire feed wheel and the second wire feed wheel support the bottom of the welding wire, and the two groups of lower pressure wheels press down the surface of the welding wire. The inner diameters of the first wire feed groove, the second wire feed groove and the third wire feed groove are 1.2, 1.0 and 0.8 mm respectively.

[0010] Preferably, two sets of guide columns are fixedly installed inside the wire feeding frame, and the guide columns are inserted into two sets of guide holes opened in the middle of the fixed plate. At the same time, two sets of studs are installed on the surface of the fixed plate, and the studs pass through the U-shaped adjustment holes opened on the top of the wire feeding frame and are screwed and fixed with nuts.

[0011] Preferably, a support frame is fixedly installed on the lower inner side of the wire feeding frame, and the support frame is arranged in a "mountain" shape. At the same time, three groups of limiting cylinders are respectively installed on the support frame, and welding wires are inserted into the inside of the three groups of limiting cylinders.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] In order to increase the friction between the welding wire and the first and second wire feeding rollers, the two sets of lower pressing rollers move downward to press the welding wire against the surfaces of the first and second wire feeding rollers, thus completing the efficient and smooth feeding of the welding wire.

[0014] The inner diameters of the first wire feed trough, the second wire feed trough and the third wire feed trough are 1.2, 1.0 and 0.8 mm respectively; they can adapt to welding wires with diameters of 0.8, 1.0 and 1.2 mm. By switching between the three sets of wire feed troughs, three sets of welding wires with different diameters can be fed accurately and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0016] Figure 2 For the utility model structure Figure 1 A three-dimensional schematic diagram from another angle;

[0017] Figure 3 For the utility model structure Figure 1 Schematic diagram of the internal structure;

[0018] Figure 4 For the utility model structure Figure 3 Side view of;

[0019] Figure 5 This is a schematic diagram of the surface structure of the first wire feeding wheel of the utility model.

[0020] Numbers in the figure: 1. Limit frame; 2. Wire feeding frame; 21. Front cover; 3. Welding wire; 4. First wire feeding wheel; 41. First wire feeding trough; 42. Second wire feeding trough; 43. Third wire feeding trough; 5. Drive motor; 6. Sprocket; 7. Support frame; 8. Limit cylinder; 9. Second wire feeding wheel; 10. Lower pressure wheel; 11. Fixing plate; 12. Stud; 13. Adjustment hole; 14. Nut; 15. Guide column. DETAILED DESCRIPTION

[0021] See also Figure 1-5 The utility model provides an automatic wire feeding device for a welding robot, including a wire feeding frame 2, the back of the wire feeding frame 2 is screwed to a fixed driving motor 5, and the outer side of the wire feeding frame 2 is screwed to a fixed front cover 21, and at the same time, both ends of the wire feeding frame 2 are installed with a limit frame 1, and the inside of the wire feeding frame 2 is interspersed with welding wire 3, and the inside of the wire feeding frame 2 is movably installed with a first wire feeding wheel 4 and a second wire feeding wheel 9, and the surfaces of the first wire feeding wheel 4 and the second wire feeding wheel 9 are both provided with welding wire 3, and at the same time, the surface of the welding wire 3 covers a lower pressure wheel 10, and the lower pressure wheel 10 is movably installed on the mounting frame at the bottom of the fixed plate 11, and the surface of the fixed plate 11 is fixedly installed with a stud 12.

[0022] Working principle: The device is installed in the position where the welding robot is adapted to feed the wire. At this time, the external switch of the drive motor 5 is turned on. The output shaft of the drive motor 5 drives the first wire feed wheel 4 to rotate, and the second wire feed wheel 9 is driven to rotate synchronously in the same direction through the sprocket 6 and the chain to complete the feeding of the welding wire 3.

[0023] In order to increase the friction between the welding wire 3 and the first wire feeding wheel 4 and the second wire feeding wheel 9, the two sets of lower pressure wheels 10 move downward at this time, pressing the welding wire 3 on the surface of the first wire feeding wheel 4 and the second wire feeding wheel 9, completing the efficient and smooth wire feeding of the welding wire 3.

[0024] As a preferred embodiment, the transverse section of the limit frame 1 is a "cross" shape, and the longitudinal section of the limit frame 1 is a rectangular shape. At the same time, two groups of limit frames 1 are symmetrically installed at both ends of the wire feeding frame 2, and the welding wire 3 is inserted into the interior of the two groups of limit frames 1.

[0025] The rotating shaft of the first wire feeding wheel 4 is fixedly connected to the driving motor 5, and sprockets 6 are installed on the rotating shafts of the first wire feeding wheel 4 and the second wire feeding wheel 9. At the same time, the first wire feeding wheel 4 and the second wire feeding wheel 9 are driven by the sprocket 6 and the chain.

[0026] By setting the sprocket 6 and the chain, the first wire feeding wheel 4 and the second wire feeding wheel 9 can rotate synchronously.

[0027] As a preferred embodiment, the surfaces of the first wire feed wheel 4, the second wire feed wheel 9 and the two groups of lower pressure wheels 10 are all provided with the first wire feed groove 41, the second wire feed groove 42 and the third wire feed groove 43, and the diameters of the first wire feed wheel 4, the second wire feed wheel 9 and the two groups of lower pressure wheels 10 are consistent. At the same time, the first wire feed wheel 4 and the second wire feed wheel 9 support the bottom of the welding wire 3, and the two groups of lower pressure wheels 10 press down the surface of the welding wire 3. The inner diameters of the first wire feed groove 41, the second wire feed groove 42 and the third wire feed groove 43 are 1.2, 1.0 and 0.8 mm respectively.

[0028] like Figure 5 As shown: the inner diameters of the first wire feeding trough 41, the second wire feeding trough 42 and the third wire feeding trough 43 are 1.2, 1.0 and 0.8 mm respectively; they can be adapted to welding wires with diameters of 0.8, 1.0 and 1.2 mm. By switching between the three sets of wire feeding troughs, three sets of welding wires 3 with different diameters can be fed accurately and stably.

[0029] As a preferred embodiment, two sets of guide columns 15 are fixedly installed inside the wire feeding frame 2, and the guide columns 15 are inserted into the two sets of guide holes opened in the middle of the fixing plate 11. At the same time, two sets of studs 12 are installed on the surface of the fixing plate 11, and the studs 12 pass through the U-shaped adjustment holes 13 opened on the top of the wire feeding frame 2 and are screwed and fixed with the nuts 14.

[0030] A support frame 7 is fixedly installed on the lower inner side of the wire feeding frame 2, and the support frame 7 is arranged in a "mountain" shape. At the same time, three groups of limiting cylinders 8 are respectively installed on the support frame 7, and the welding wires 3 are inserted into the inside of the three groups of limiting cylinders 8.

[0031] The arrangement of two sets of limit frames 1 and three sets of limit cylinders 8 can ensure that the welding wire 3 is transported horizontally inside the wire feeding frame 2 without tilting. The downward pressing wheel 10 can ensure that the welding wire 3 is in a taut state when being transported, making the wire feeding smoother.

[0032] The pressing force of the lower pressing wheel 10 on the welding wire 3 can be adjusted by the stud 12 and the nut 14.

Claims

1. An automatic wire feeding device for a welding robot, comprising a wire feeding frame (2), characterized in that: The back of the wire feeding frame (2) is screwed to fix the driving motor (5), and the outer side of the wire feeding frame (2) is screwed to fix the front cover (21), and at the same time, both ends of the wire feeding frame (2) are installed with limit frames (1), and the inside of the wire feeding frame (2) is inserted with welding wire (3), and the inside of the wire feeding frame (2) is movably installed with a first wire feeding wheel (4) and a second wire feeding wheel (9), and the surfaces of the first wire feeding wheel (4) and the second wire feeding wheel (9) are both provided with welding wire (3), and at the same time, the surface of the welding wire (3) covers the lower pressure wheel (10), and the lower pressure wheel (10) is movably installed on the mounting frame at the bottom of the fixing plate (11), and the surface of the fixing plate (11) is fixedly installed with a stud (12).

2. The automatic wire feeding device for a welding robot according to claim 1, characterized in that: The transverse section of the limit frame (1) is in the shape of a cross, and the longitudinal section of the limit frame (1) is in the shape of a rectangle. Meanwhile, two groups of limit frames (1) are symmetrically mounted at two ends of the wire feeding frame (2), and welding wires (3) are inserted into the interiors of the two groups of limit frames (1).

3. The automatic wire feeding device for a welding robot according to claim 1, characterized in that: The rotating shaft of the first wire feeding wheel (4) is fixedly connected to the driving motor (5), and sprockets (6) are installed on the rotating shafts of the first wire feeding wheel (4) and the second wire feeding wheel (9), and transmission is carried out between the first wire feeding wheel (4) and the second wire feeding wheel (9) via the sprockets (6) and chains.

4. The automatic wire feeding device for a welding robot according to claim 1, characterized in that: The surfaces of the first wire feeding wheel (4), the second wire feeding wheel (9) and the two groups of lower pressing wheels (10) are all provided with a first wire feeding groove (41), a second wire feeding groove (42) and a third wire feeding groove (43), and the diameters of the first wire feeding wheel (4), the second wire feeding wheel (9) and the two groups of lower pressing wheels (10) are consistent. At the same time, the first wire feeding wheel (4) and the second wire feeding wheel (9) support the bottom of the welding wire (3), and the two groups of lower pressing wheels (10) press down the surface of the welding wire (3), and the inner diameters of the first wire feeding groove (41), the second wire feeding groove (42) and the third wire feeding groove (43) are 1.2, 1.0 and 0.8 mm respectively.

5. The automatic wire feeding device for a welding robot according to claim 1, characterized in that: Two groups of guide columns (15) are fixedly installed inside the wire feeding frame (2), and the guide columns (15) are inserted into two groups of guide holes opened in the middle of the fixing plate (11). At the same time, two groups of studs (12) are installed on the surface of the fixing plate (11), and the studs (12) pass through the U-shaped adjustment holes (13) opened on the top of the wire feeding frame (2) and are screwed and fixed with nuts (14).

6. The automatic wire feeding device for a welding robot according to claim 1, characterized in that: A support frame (7) is fixedly installed on the lower inner side of the wire feeding frame (2), and the support frame (7) is arranged in a "mountain" shape. Three groups of limiting cylinders (8) are respectively installed on the support frame (7), and welding wires (3) are inserted into the interiors of the three groups of limiting cylinders (8).

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