Intelligent welding robot

Abstract

This invention discloses an intelligent welding robot, relating to the field of welding equipment. It includes a fixed platform, with a mounting base movably mounted on the top of the fixed platform. A drive mechanism for moving the mounting base is installed inside the fixed platform. A movable platform is slidably mounted inside the mounting base. A clamping spring connects the mounting base and the movable platform. Limit seats are provided on the top of both the mounting base and the movable platform. A support mechanism is mounted on one side of each limit seat. A first correction mechanism is provided on the top of the fixed platform, and a set of positioning plates is provided on one side of the first correction mechanism. This invention adjusts the position of the welding rod's output end on the material roller through the drive mechanism, ensuring that the output end of the welding rod is always centered on the positioning plate. This position changes as the welding rod is used, and the shape of the welding rod is corrected by the first correction mechanism and the straightening wheel, resulting in better subsequent welding effects.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding equipment, in particular to an intelligent welding robot. BACKGROUND

[0002] The welding robot is an industrial robot engaged in welding. According to the definition of the standard welding robot of the International Organization for Standardization, the industrial robot is a multipurpose, repeatable programming, automatic control operation machine with three or more programmable axes, which is used in the field of industrial automation. In order to adapt to different purposes, the mechanical interface of the last axis of the robot is usually a connecting flange, which can connect different tools or end effectors. The welding robot is the welding robot which connects the welding gun or welding torch to the flange of the last axis of the industrial robot, so that it can perform welding, cutting or thermal spraying.

[0003] According to the welding process and workpiece requirements, the appropriate welding rod is selected to be inserted into the welding gun. The robot accurately moves the welding gun to the welding position according to the preset welding program, applies appropriate current and voltage, and melts the welding material and connects it together.

[0004] In the actual welding process, the surface of the welding rod may be contaminated with oil, rust, moisture and other impurities during storage and transportation. These impurities will affect the welding quality, such as causing porosity, slag inclusion and other defects, so it is necessary to remove the impurities. The general cleaning method is to use a grinding machine or other tools to clean the surface of the welding rod.

[0005] Before the welding work is carried out, the round welding rod is wound on the material roller and will be in a curved state. The welding rod in the curved state will first affect the surface treatment effect, and will also affect the subsequent welding quality. During the unwinding process of the welding rod, the welding rod on the material roller will gradually unwind from one end to the other end, resulting in more serious bending deformation of the welding rod. SUMMARY

[0006] Therefore, the purpose of the present application is to provide an intelligent welding robot to solve the technical problem that the curved welding rod will affect the subsequent welding quality during the welding rod conveying process of the general welding robot.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a kind of intelligent welding robot, including fixed platform, the top of the fixed platform movably provided with mounting seat, the inside of the fixed platform is equipped with drive mechanism for driving mounting seat movement, the inside of the mounting seat is slidably provided with movable platform, clamping spring is connected between the mounting seat and movable platform, the top of the mounting seat and movable platform is provided with limit seat, the side of the limit seat is equipped with support mechanism, the top of the fixed platform is provided with first deviation rectification mechanism, the side of the first deviation rectification mechanism is provided with a group of positioning plate, the inside of the positioning plate is equipped with pressure sensor, the movable end of the pressure sensor is connected with support seat, the inner wall of the support seat and positioning plate is provided with correction wheel.

[0008] The present application further provides that the support mechanism includes mounting column, spring telescopic cylinder and plugboard, the mounting column is arranged on the side wall of the limit seat, the outer wall of the mounting column is provided with a plurality of spring telescopic cylinders, the movable end of the spring telescopic cylinder is connected with the plugboard.

[0009] The present application further provides that the drive mechanism includes first motor and screw rod, the first motor is mounted on one side of the fixed platform, the output end of the first motor is connected with the screw rod, the bottom of the movable platform is provided with a connecting block threadedly connected with the screw rod.

[0010] The present application further provides that the outer wall of the plugboard is a conical structure.

[0011] The present application further provides that the first deviation rectification mechanism includes fixed seat, movable seat, guide column and fastening spring, a group of the fixed seat is fixedly arranged on the top of the fixed platform, the top of the fixed seat is movably provided with movable seat, the fastening spring is arranged between the movable seat and the fixed seat, the bottom of the movable seat is provided with guide column, the top of the fixed seat is provided with guide groove matched with the guide column, and the fastening spring is arranged on the outer wall of the guide column, the side wall of the fixed seat and movable seat is provided with correction wheel.

[0012] The present application further provides that the initial position of the correction wheel in the inner wall of the support seat is higher than that of the correction wheel in the side wall of the fixed seat.

[0013] The present application further provides that the inside of the positioning plate is provided with surface treatment mechanism, the surface treatment mechanism includes sealing shell, second motor, gear, connecting disc, connecting wheel and cutting hole, a group of the sealing shell is arranged on the side wall of the positioning plate, the outer wall of the sealing shell is provided with second motor, the output end of the second motor is connected with gear, the outer wall of the connecting disc is provided with connecting teeth engaged with the gear, one end of the connecting disc is provided with connecting wheel, the eccentric position of one end of the connecting disc and connecting wheel is provided with cutting hole.

[0014] The top of the fixing table is provided with a support frame on the inner side of a set of positioning plates, the sealing shell, the support frame and the positioning plates form a sealing structure, the top of the support frame is provided with an air inlet pipe, and the two sides of the support frame are provided with limiting rings.

[0015] The bottom of the fixing table is provided with a filter shell, the inside of the filter shell is provided with a filter plate, and the filter shell is connected with the sealing shell through a connecting pipe.

[0016] To sum up, the present application mainly has the following beneficial effects: the present application adjusts the position of the discharge end of the electrode on the material roller through the driving mechanism, so that the discharge end of the electrode is always at the center position of the positioning plate, changes with the use of the electrode at any time, and the shape of the electrode is corrected through the correction of the first deviation correction mechanism and the correction wheel, so that the subsequent welding effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 It is a schematic diagram of the electrode treatment structure of the present application;

[0019] Figure 3 It is a schematic diagram of the installation structure of the driving mechanism and the supporting mechanism of the present application;

[0020] Figure 4 It is a schematic diagram of the internal structure of the supporting structure of the present application;

[0021] Figure 5 It is a front view of the internal structure of the positioning plate of the present application;

[0022] Figure 6 It is a schematic diagram of the surface treatment mechanism of the present application;

[0023] Figure 7 It is a schematic diagram of the internal structure of the sealing shell of the present application;

[0024] Figure 8 It is a schematic diagram of the structure of the filter shell of the present application;

[0025] Figure 9 It is a schematic diagram of the opening state structure of the first deviation correction mechanism of the present application.

[0026] In the diagram: 1. Fixed platform; 2. Mounting base; 3. Movable platform; 4. Limiting seat; 5. Mounting column; 6. Spring telescopic cylinder; 7. Insert plate; 8. First motor; 9. Clamping spring; 10. Lead screw; 11. Fixed base; 12. Movable base; 13. Correcting wheel; 14. Support base; 15. Pressure sensor; 16. Sealing shell; 17. Support frame; 18. Limiting ring; 19. Air inlet pipe; 20. Second motor; 21. Gear; 22. Connecting disc; 23. Connecting wheel; 24. Cutting hole; 25. Filter shell; 26. Filter plate; 27. Connecting pipe; 28. Guide column; 29. ​​Fastening spring; 30. Positioning plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] A smart welding robot, such as Figures 1-9 As shown, it includes a fixed platform 1, such as Figure 1 The fixed platform 1 is installed on the top of the welding torch. The fixed platform 1 has a drive mechanism that drives the mounting base 2 to move. The drive mechanism includes a first motor 8 and a lead screw 10. The first motor 8 is installed on one side of the fixed platform 1. The output end of the first motor 8 is connected to the lead screw 10. The bottom of the movable platform 3 is equipped with a connecting block that is threadedly connected to the lead screw 10. When the first motor 8 is started, the lead screw 10 is driven to rotate by the first motor 8. When the lead screw 10 rotates, the connecting block moves along the surface of the lead screw 10, and the movable platform 3 at the top moves accordingly.

[0029] The mounting base 2 has a sliding movable platform 3 inside, and a clamping spring 9 connects the mounting base 2 and the movable platform 3. Both the mounting base 2 and the movable platform 3 have limit seats 4 on their tops. A support mechanism is installed on one side of the limit seat 4. The support mechanism clamps and fixes the material roller with the welding rod. The support mechanism includes a mounting column 5, a spring telescopic cylinder 6, and an insert plate 7. The mounting column 5 is located on the side wall of the limit seat 4. Multiple spring telescopic cylinders 6 are installed on the outer wall of the mounting column 5. The movable end of the spring telescopic cylinder 6 is connected to the insert plate 7. The two ends of the material roller are hollow, so the insert plate 7 can be inserted into both ends of the material roller. Due to the presence of the clamping spring 9, the limit seats 4 on both sides will squeeze the material roller. With the help of the insert plate 7, the material roller can be fixed. At the same time, the outer wall of the insert plate 7 is a conical structure, which can adapt to different material roller sizes and has higher adaptability. A rotary motor is installed on one side of one of the limit seats 4. The rotary motor controls the rotation of the mounting column 5, and the material roller rotates accordingly to perform the corresponding feeding work.

[0030] The end of the electrode on the material roller passes through the correction mechanism and the surface treatment mechanism and is connected with the electrode conveying mechanism of the welding gun. The electrode conveying mechanism is composed of a motor and a set of rubber wheels. The motor drives the rubber wheels to rotate, and the electrode is pulled out. The above structure is not shown in the structural diagram, and those skilled in the art can choose appropriate equipment for use.

[0031] The correction mechanism includes a first deviation correction mechanism, which includes a fixed seat 11. A set of fixed seats 11 are fixedly arranged on the top of the fixed table 1. The top of the fixed seat 11 movably arranges a movable seat 12. A tightening spring 29 is arranged between the movable seat 12 and the fixed seat 11. The bottom of the movable seat 12 is provided with a guide column 28. The top of the fixed seat 11 is provided with a guide groove matched with the guide column 28, and the tightening spring 29 is arranged on the outer wall of the guide column 28. The side walls of the fixed seat 11 and the movable seat 12 are provided with correction wheels 13. The electrode is generally in a curved state when it leaves the material roller. When it passes between the fixed seat 11 and the movable seat 12, it will be preliminarily corrected by the correction wheels 13 above. After correction, the electrode continues to move forward to the inside between the positioning plates 30, and is further corrected by the multiple correction wheels 13 arranged on the inner wall of the positioning plates 30. After correction, it enters the surface treatment mechanism for surface treatment work. The tightening spring 29 and the guide column 28 facilitate the insertion of the electrode, and when the electrode is tightened, it will not be further deformed due to the fixed position of the correction wheel 13.

[0032] The surface treatment mechanism is installed in the inside of the positioning plate 30, which includes a sealing shell 16. A set of sealing shells 16 are arranged on the side wall of the positioning plate 30. The outer wall of the sealing shell 16 is provided with a second motor 20. The output end of the second motor 20 is connected with a gear 21. The outer wall of the connecting disc 22 is provided with connecting teeth meshed with the gear 21. One end of the connecting disc 22 is provided with a connecting wheel 23. The eccentric position of the connecting disc 22 and one end of the connecting wheel 23 are provided with cutting holes 24. After the electrode enters the surface treatment mechanism, it passes out of the cutting hole 24. Start the second motor 20. The second motor 20 drives the gear 21 to rotate. Under the action of the connecting teeth, the connecting disc 22 and the connecting wheel 23 rotate, and because the cutting hole 24 is in an eccentric position, the inner wall of the cutting hole 24 is a rough bore wall, so that the cutting hole 24 always has part of the rough inner wall in contact with the electrode. With the forward movement of the electrode, the oxide layer protruding on the surface of the electrode can be polished and cut.

[0033] The connecting disc 22 and the connecting wheel 23 are detachable and replaceable structures. The hole diameters of the cutting holes 24 on different connecting discs 22 and connecting wheels 23 are different. The appropriate cutting hole 24 can be selected according to the diameter of the electrode to perform the corresponding surface treatment work.

[0034] Although the cutting hole 24 can cut the surface of the welding rod, the welding rod in the external environment can still be oxidized, so the top of the fixing table 1 is located inside a set of positioning plates 30 and provided with a support frame 17, the sealing shell 16, the support frame 17 and the positioning plate 30 constitute a sealed structure, the top of the support frame 17 is provided with an air inlet pipe 19, and the two sides of the support frame 17 are provided with a limiting ring 18, so that the welding rod does not excessively contact with the external air during cutting, and the possibility of oxidation is reduced, and the air inlet pipe 19 is connected with a helium supply mechanism, the inside of the sealed structure is supplied with air through the helium supply mechanism, the helium space can protect the welding rod from direct contact with air, and the possibility of oxidation of the welding rod is further reduced, the welding rod coming out of the surface treatment mechanism directly enters the welding gun for welding, the limiting ring 18 wraps the surface of the welding rod, which can further improve the sealing effect and guide the movement of the welding rod, and since the air inlet pipe 19 supplies air to the sealed structure from the top, the cutting debris will be blown to the bottom of the sealing shell 16 at the same time of air supply, the bottom of the fixing table 1 is provided with a filter shell 25, the inside of the filter shell 25 is provided with a filter plate 26, and the filter shell 25 is connected with the sealing shell 16 through a connecting pipe 27, the debris entering the bottom of the sealing shell 16 will enter the filter shell 25 along the connecting pipe 27, and the helium is filtered by the filter shell 25, when the helium mixed with debris enters the filter shell 25 from the connecting pipe 27, the helium enters from a small space to a large space, the filter plate 26 has a better filtering effect, a one-way valve is installed in the connecting pipe 27, the one-way valve can effectively prevent dust on the filter plate 26 from backflushing, and the filter plate 26 can be disassembled and cleaned to prevent blockage and poor filtering effect due to long use time.

[0035] Further, the limiting ring 18 is a two-section structure, which is a sealing section and a guiding section, the sealing section is made of wear-resistant rubber material, and the guiding section is made of aluminum alloy material and coated with a Teflon coating, the welding rod first passes through the sealing section and then passes through the guiding section during movement, the guiding section limits and guides the welding rod, the sealing section improves the sealing effect of the sealing structure, and since the welding rod is not consumed quickly, the movement speed is slow, the heat generation during contact with the sealing section is low, the two-section limiting ring 18 can effectively improve the auxiliary limiting effect and will not generate high heat, the contact area between the sealing section and the welding rod is small, and the heat generation is also limited.

[0036] During the welding process, since the welding rod is wound on the surface of the material roller, as the welding rod is consumed, the discharge end of the welding rod on the material roller will gradually deviate from the center position of the positioning plate 30, at this time, the first motor 8 drives the lead screw 10 to rotate, and the movable table 3 is controlled to move horizontally, so that the discharge end of the welding rod is always located at the center position of the positioning plate 30, and the change is made in time as the welding rod is used.

[0037] Further, the inside of the positioning plate 30 is provided with a pressure sensor 15, the movable end of the pressure sensor 15 is connected with a support seat 14, the inner wall of the support seat 14 is provided with a correcting wheel 13, the welding rod winding thickness on the material roller becomes thinner and thinner with use, at this time, the welding rod provided by the material roller rotation per round becomes less and less, and the welding rod conveying mechanism conveying speed on the welding gun is unchanged, so the welding rod is tight, the tight welding rod will press the correcting wheel 13 on the support seat 14 downward, at this time, the pressure sensor 15 is also extruded, the extruded pressure sensor 15 sends a signal to the controller, the controller intelligently controls the rotating speed of the first motor 8 to increase, keeps the output speed of the welding rod at both ends equal, and the welding rod will not be in a tight state.

[0038] The signal sending of the pressure sensor 15 mentioned in the above structure and the electrical connection structure of the controller controlling the rotating speed of the first motor 8 are prior art, so they are not described in detail, and the person skilled in the art can clearly understand and use the corresponding structure.

[0039] Although the embodiments of the present application have been shown and described, the specific embodiments are only an explanation of the present application, and are not a limitation of the application, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. An intelligent welding robot comprising a fixed table (1), characterized in that: The top of the fixed table (1) is movably provided with a mounting seat (2), the inside of the fixed table (1) is provided with a driving mechanism for driving the movement of the mounting seat (2), the inside of the mounting seat (2) is slidably provided with a movable table (3), the mounting seat (2) and the movable table (3) are connected with clamping springs (9), the top of the mounting seat (2) and the movable table (3) is provided with a limiting seat (4), one side of the limiting seat (4) is provided with a supporting mechanism, the top of the fixed table (1) is provided with a first deviation rectifying mechanism, one side of the first deviation rectifying mechanism is provided with a group of positioning plates (30), the inside of the positioning plate (30) is provided with a pressure sensor (15), the movable end of the pressure sensor (15) is connected with a supporting seat (14), the supporting seat (14) and the inner wall of the positioning plate (30) are provided with a correction wheel (13); the first deviation rectifying mechanism comprises a fixed seat (11), a movable seat (12), a guide column (28) and a fastening spring (29), a group of the fixed seat (11) is fixedly arranged on the top of the fixed table (1), the top of the fixed seat (11) is movably provided with a movable seat (12), the movable seat (12) and the fixed seat (11) are provided with a fastening spring (29), the bottom of the movable seat (12) is provided with a guide column (28), the top of the fixed seat (11) is provided with a guide groove matched with the guide column (28), and the fastening spring (29) is arranged on the outer wall of the guide column (28), the side wall of the fixed seat (11) and the movable seat (12) is provided with a correction wheel (13); the inside of the positioning plate (30) is provided with a surface treatment mechanism, the surface treatment mechanism comprises a sealing shell (16), a second motor (20), a gear (21), a connecting disc (22), a connecting wheel (23) and a cutting hole (24), a group of the sealing shell (16) is arranged on the side wall of the positioning plate (30), the outer wall of the sealing shell (16) is provided with a second motor (20), the output end of the second motor (20) is connected with a gear (21), the outer wall of the connecting disc (22) is provided with a connecting tooth engaged with the gear (21), one end of the connecting disc (22) is provided with a connecting wheel (23), one end of the connecting disc (22) and the connecting wheel (23) is eccentrically provided with a cutting hole (24).

2. The intelligent welding robot of claim 1, wherein: The supporting mechanism comprises a mounting column (5), a spring telescopic cylinder (6) and a plugboard (7), the mounting column (5) is arranged on the side wall of the limiting seat (4), a plurality of spring telescopic cylinders (6) are arranged on the outer wall of the mounting column (5), the movable end of the spring telescopic cylinder (6) is connected with the plugboard (7).

3. The intelligent welding robot of claim 1, wherein: The driving mechanism comprises a first motor (8) and a lead screw (10), the first motor (8) is mounted on one side of the fixed table (1), the output end of the first motor (8) is connected with a lead screw (10), the bottom of the movable table (3) is provided with a connecting block threadedly connected with the lead screw (10).

4. The intelligent welding robot of claim 2, wherein: The outer wall of the plugboard (7) is a tapered structure.

5. The intelligent welding robot of claim 1, wherein: The initial position of the correction wheel (13) in the inner wall of the support seat (14) is higher than the side wall of the fixing seat (11).

6. The intelligent welding robot of claim 1, wherein: The top of the fixing table (1) is provided with a support frame (17) on the inner side of a set of positioning plates (30), the sealing shell (16), the support frame (17) and the positioning plates (30) constitute a sealing structure, the top of the support frame (17) is provided with an air inlet pipe (19), and the two sides of the support frame (17) are provided with limiting rings (18).

7. The intelligent welding robot of claim 6, wherein: The bottom of the fixing table (1) is provided with a filter shell (25), the inside of the filter shell (25) is provided with a filter plate (26), the filter shell (25) and the sealing shell (16) are connected through a connecting pipe (27), and the inside of the connecting pipe (27) is provided with a one-way valve.

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