Ground wire conductive mechanism

Abstract

The utility model discloses a ground wire conductive mechanism used for large-scale jointed board welding equipment, the large-scale jointed board welding equipment comprises a support frame and a support plane located above the support frame, and the support plane is used for supporting a workpiece. The ground wire conductive mechanism comprises a fixed seat fixed on the supporting frame, a pneumatic jacking mechanism connected to the fixed seat and a carbon brush assembly located below the supporting plane. The pneumatic jacking mechanism is provided with a base part fixedly held on the fixed seat, an air cylinder connected to the base part and a sliding block driven by the air cylinder. The carbon brush assembly is provided with a carbon brush support fixedly connected to the sliding block and a flexible carbon brush located at the upper end of the carbon brush support, the flexible carbon brush is connected to an external power source through a ground wire and protrudes upwards out of the carbon brush support, and after the workpiece moves in place on the supporting plane, the air cylinder drives the carbon brush assembly to move upwards through the sliding block. And the flexible carbon brush is electrified until the flexible carbon brush abuts against the lower surface of the workpiece, current export in the welding process is stabilized, and therefore the purpose of stabilizing the welding arc is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic welding of spliced plates, in particular to a ground wire conducting mechanism for a large spliced plate welding device. Background Art

[0002] The automatic welding technology of spliced plates is mainly applied to industrial fields such as ships, buildings, machinery, and energy. Due to the characteristics of fast splicing speed, high structural strength, and good economy of the splicing process, the automatic welding technology of spliced plates is widely used in these fields. The automatic welding technology of spliced plates requires a flat welding surface, no gaps, continuous and defect-free welds, high welding strength, and beautiful color. It requires stable and reliable welding process parameters and the performance of welding equipment, and has the ability to work continuously for a long time.

[0003] Due to the long-term welding applied to the production line, if a ground wire conducting mechanism of a specially designed large spliced plate welding device is not adopted, on the one hand, the welding quality requirements cannot be met, and on the other hand, automatic welding cannot be achieved during the process. Currently, a mechanism using a simple ground wire clamp and a cable connection mandrel is commonly used, and then connected to the welding power supply; the entire conduction process is simple, the current distribution during the welding process is not uniform enough, and the voltage sampling during the welding process is not accurate enough, which does not meet the use scenario of the automatic welding production line, so the welding quality and the use requirements of the automatic welding production line cannot be guaranteed.

[0004] Therefore, it is hoped to propose a new ground wire conducting mechanism to overcome the above defects. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a ground wire conducting mechanism for a large spliced plate welding device, ensuring the stability of the arc during the welding process.

[0006] To achieve the above object, the present utility model adopts the following technical solution: A ground wire conducting mechanism is used for a large-scale panel welding device. The large-scale panel welding device includes a support frame and a support plane located above the support frame. The support plane is used to support at least one workpiece. The ground wire conducting mechanism includes a fixed seat fixed on the support frame, a pneumatic lifting mechanism connected to the fixed seat, and a carbon brush assembly located below the support plane. The pneumatic lifting mechanism is provided with a base fixed on the fixed seat, a cylinder connected to the base, and a slider driven by the cylinder. The cylinder drives the slider to move vertically. The carbon brush assembly is provided with a carbon brush bracket fixedly connected to the slider and a flexible carbon brush located at the upper end of the carbon brush bracket. The flexible carbon brush is connected to an external power source through a ground wire and protrudes upward from the carbon brush bracket. After the workpiece moves into place on the support plane, the cylinder drives the carbon brush assembly to move upward through the slider until the flexible carbon brush abuts against the lower surface of the workpiece. At this time, the flexible carbon brush is energized.

[0007] In a preferred embodiment, the carbon brush assembly is provided with an insulating partition between the slider and the carbon brush bracket to electrically insulate the slider from the carbon brush bracket.

[0008] In a preferred embodiment, the carbon brush assembly is provided with several insulating sleeves. The insulating sleeves sequentially pass through the carbon brush bracket and the insulating partition and are fixedly connected to the slider.

[0009] In a preferred embodiment, the carbon brush assembly is provided with a carbon brush pressing plate at the upper end of the carbon brush bracket. The carbon brush pressing plate does not exceed the top surface of the carbon brush bracket, and the flexible carbon brush is fixedly connected to the carbon brush pressing plate.

[0010] In a preferred embodiment, the base is provided with a lower base at the lower end of the fixed seat, an upper base at the upper end of the fixed seat, and a guide rail connected between the upper base and the lower base. The slider is located between the upper base and the lower base and sleeved on the guide rail.

[0011] In a preferred embodiment, the ground wire conducting mechanism includes a driving component connected to the cylinder. The driving component is provided with a conduit connecting the cylinder to an external air source to drive the operation of the cylinder.

[0012] In a preferred embodiment, the conduit is connected to the bottom of the lower base through a straight-through joint, and the cylinder is fixedly connected to the top of the lower base to connect the conduit to the cylinder.

[0013] In a preferred embodiment, the driving assembly is provided with a solenoid valve connected to the conduit, and the solenoid valve is connected to a controller, and the controller controls the operation of the cylinder through the solenoid valve.

[0014] In a preferred embodiment, the driving assembly is provided with a regulating valve connected to the conduit, and the regulating valve controls the gas flow rate flowing from the external air source into the cylinder.

[0015] In a preferred embodiment, the fixed seat and the carbon brush assembly are respectively arranged on both sides of the pneumatic lifting mechanism, and the flexible carbon brush is arranged on a side surface of the carbon brush bracket away from the pneumatic lifting mechanism.

[0016] Compared with the prior art, the present utility model has the following beneficial effects: The carbon brush assembly is provided with a carbon brush bracket fixedly connected to the slider and a flexible carbon brush located at the upper end of the carbon brush bracket. The flexible carbon brush is connected to an external power source through a ground wire and protrudes upward from the carbon brush bracket. After the workpiece moves into place on the support plane, the cylinder drives the carbon brush assembly to move upward through the slider until the flexible carbon brush abuts against the lower surface of the workpiece. At this time, the flexible carbon brush is energized. The flexible design of the flexible carbon brush flexibly solves the problem of the flow of the assembled plates during the welding process of the assembled plates by driving the lifting of the flexible carbon brush by the cylinder. It is placed at a suitable conductive position to stabilize the current conduction during the welding process, so that the sampling voltage can be stably identified, thereby achieving the purpose of stabilizing the welding arc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic view of the ground wire conduction mechanism for a large assembled plate welding device in a preferred embodiment of the present utility model.

[0018] Figure 2 is Figure 1 a three-dimensional schematic view of the ground wire conduction mechanism shown.

[0019] Figure 3 is Figure 2 a front view of the ground wire conduction mechanism shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Please refer to Figures 1 to 3 shown, a preferred embodiment of the present utility model discloses a ground wire conduction mechanism 100 for a large assembled plate welding device, mainly aiming at reducing the phenomenon of uneven loop current, inaccurate welding voltage sampling and thus unstable welding arc during the welding process of assembled plates of carbon steel and stainless steel, and ensuring the stability of the arc during the welding process. The large assembled plate welding device includes a support frame 201 and a support plane located above the support frame 201, and the support plane is used to support at least one workpiece 200.

[0021] Combined with Figure 2 As shown, the ground wire conducting mechanism 100 includes a fixed seat 10 fixed on the support frame 201, a pneumatic lifting mechanism 20 connected to the fixed seat 10, and a carbon brush assembly 30 located below the support plane. The fixed seat 10 is connected to the lower part of the support frame 201, and the fixed seat 10 and the carbon brush assembly 30 are respectively arranged on both sides of the pneumatic lifting mechanism 20, so that the whole ground wire conducting mechanism 100 is arranged below the support plane, that is, the ground wire conducting mechanism 100 is located below the workpiece 200.

[0022] The pneumatic lifting mechanism 20 is provided with a base 21 fixed on the fixed seat 10, a cylinder 22 connected to the base 21, and a slider 23 driven by the cylinder 22. The cylinder 22 drives the slider 23 to move vertically. Specifically, the base 21 is provided with a lower base 211 at the lower end of the fixed seat 10, an upper base 212 at the upper end of the fixed seat 10, and a guide rail 213 connected between the upper base 212 and the lower base 211. The guide rail 213 extends vertically, and the slider 23 is located between the upper base 212 and the lower base 211 and sleeved on the guide rail 213.

[0023] The carbon brush assembly 30 is provided with a carbon brush bracket 31 fixedly connected to the slider 23, a flexible carbon brush 32 and a carbon brush pressing plate 33 at the upper end of the carbon brush bracket 31. The carbon brush pressing plate 33 does not exceed the top surface of the carbon brush bracket 31, and the flexible carbon brush 32 is fixedly connected to the carbon brush pressing plate 33 for disassembly / installation of the flexible carbon brush 32 on the carbon brush bracket 31. The flexible carbon brush 32 is connected to an external power supply through a ground wire and protrudes upward from the carbon brush bracket 31. The flexible carbon brush 32 is used to contact the workpiece 200 and is of a flexible design, so that the contact surface between the two is large, the conductive effect is good, and the welding is stable, thereby ensuring uniform conductivity of the entire flexible carbon brush 32.

[0024] The flexible carbon brush 32 is arranged on a side surface of the carbon brush bracket 31 away from the pneumatic lifting mechanism 20. The carbon brush assembly 30 is further provided with an insulating partition 34 and several insulating bushings 35 between the slider 23 and the carbon brush bracket 31. The insulating bushings 35 sequentially pass through the carbon brush bracket 31 and the insulating partition 34 and are fixedly connected to the slider 23, so that the slider 23 and the carbon brush bracket 31 are fixedly connected while being electrically insulated.

[0025] The ground wire conducting mechanism 100 further includes a driving component 40 connected to the air cylinder 22. The driving component 40 is provided with a conduit 41, a solenoid valve 42 and a regulating valve 43 connected to the conduit 41. The conduit 41 is connected to the bottom of the lower base 211 through a straight connector. The air cylinder 22 is fixedly connected to the top of the lower base 211 so that the conduit 41 communicates with the air cylinder 22. At the same time, the conduit 41 communicates the air cylinder 22 with an external air source to drive the operation of the air cylinder 22. The solenoid valve 42 is connected to a controller, and the controller controls the operation of the air cylinder 22 through the solenoid valve 42. The regulating valve 43 controls the gas flow rate flowing from the external air source into the air cylinder 22.

[0026] After the workpiece 200 is moved into place and clamped on the support plane, the air cylinder 22 drives the carbon brush assembly 30 to move upward through the slider 23 until the flexible carbon brush 32 abuts against the lower surface of the workpiece 200. At this time, the flexible carbon brush 32 is electrified, stabilizing the current conduction during the welding process, enabling the sampling voltage to be stably identified, and thus achieving the purpose of stabilizing the welding arc. At the same time, the ground wire conducting mechanism 100 can be flexibly lifted and lowered to meet the use requirements of ground wire connection in an automated production line, with high automation and good effects.

[0027] In the present utility model, the carbon brush assembly 30 is provided with a carbon brush bracket 31 fixedly connected to the slider 23 and a flexible carbon brush 32 located at the upper end of the carbon brush bracket 31. The flexible carbon brush 32 is connected to an external power source through a ground wire and protrudes upward from the carbon brush bracket 31. After the workpiece 200 is moved into place on the support plane, the air cylinder 22 drives the carbon brush assembly 30 to move upward through the slider 23 until the flexible carbon brush 32 abuts against the lower surface of the workpiece 200. At this time, the flexible carbon brush 32 is electrified. The flexible design of the flexible carbon brush 32 flexibly solves the problem of panel turnover during the panel welding process by driving the lifting of the flexible carbon brush 32 by the air cylinder 22. It is placed in a suitable conductive position to stabilize the current conduction during the welding process, enabling the sampling voltage to be stably identified, and thus achieving the purpose of stabilizing the welding arc. Therefore, for large panel welding equipment, the ground wire conducting mechanism 100 can not only meet the welding stability requirements but also well adapt to the application of the panel production line, thus well completing the welding work of the panel.

[0028] In summary, the above are only the preferred embodiments of the present utility model, and the scope of the present utility model should not be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A ground wire conducting mechanism is used for a large-scale panel welding device. The large-scale panel welding device includes a support frame and a support plane located above the support frame. The support plane is used to support at least one workpiece. The ground wire conducting mechanism includes a fixed seat fixed on the support frame, a pneumatic lifting mechanism connected to the fixed seat, and a carbon brush assembly located below the support plane. The pneumatic lifting mechanism is provided with a base fixed on the fixed seat, a cylinder connected to the base, and a slider driven by the cylinder. The cylinder drives the slider to move vertically. It is characterized in that: The carbon brush assembly is provided with a carbon brush bracket fixedly connected to the slider and a flexible carbon brush located at the upper end of the carbon brush bracket. The flexible carbon brush is connected to an external power supply through a ground wire and protrudes upward from the carbon brush bracket. After the workpiece moves into place on the support plane, the air cylinder drives the carbon brush assembly to move upward through the slider until the flexible carbon brush abuts against the lower surface of the workpiece, and at this time the flexible carbon brush is energized.

2. The ground wire conducting mechanism according to claim 1, wherein: The carbon brush assembly is provided with an insulating partition between the slider and the carbon brush bracket to electrically insulate the slider from the carbon brush bracket.

3. The ground wire conducting mechanism according to claim 2, characterized in that: The carbon brush assembly is provided with several insulating bushings, and the insulating bushings sequentially pass through the carbon brush bracket and the insulating partition and are fixedly connected to the slider.

4. The ground wire conduction mechanism according to claim 1, wherein: The carbon brush assembly is provided with a carbon brush pressing plate at the upper end of the carbon brush bracket. The carbon brush pressing plate does not exceed the top surface of the carbon brush bracket, and the flexible carbon brush is fixedly connected to the carbon brush pressing plate.

5. The ground wire conduction mechanism according to claim 1, characterized in that: The base is provided with a lower base at the lower end of the fixed seat, an upper base at the upper end of the fixed seat, and a guide rail connected between the upper base and the lower base. The slider is located between the upper base and the lower base and is sleeved on the guide rail.

6. The ground wire conducting mechanism according to claim 5, wherein: The ground wire conducting mechanism includes a driving component connected to the air cylinder. The driving component is provided with a conduit connecting the air cylinder to an external air source to drive the operation of the air cylinder.

7. The ground wire conducting mechanism according to claim 6, characterized in that: The conduit is connected to the bottom of the lower base through a straight joint, and the air cylinder is fixedly connected to the top of the lower base so that the conduit communicates with the air cylinder.

8. The ground wire conduction mechanism according to claim 6, characterized in that: The driving component is provided with a solenoid valve connected to the conduit. The solenoid valve is connected to a controller, and the controller controls the operation of the air cylinder through the solenoid valve.

9. The ground wire conducting mechanism according to claim 8, characterized in that: The driving component is provided with a regulating valve connected to the conduit. The regulating valve controls the gas flow rate flowing from the external air source into the air cylinder.

10. The ground wire conducting mechanism according to claim 1, wherein: The fixed seat and the carbon brush assembly are respectively arranged on both sides of the pneumatic lifting mechanism, and the flexible carbon brush is arranged on a side surface of the carbon brush bracket away from the pneumatic lifting mechanism.

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