Automatic workstation for aluminum plate stud welding
By using a six-axis robot system, a DSP-controlled inverter power supply, and an argon-protected arc welding machine for studs, the problem of unstable aluminum alloy welding was solved, achieving efficient and low-cost aluminum plate stud welding.
Patent Information
- Application Number
- CN202422049851.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-08-23
AI Technical Summary
Existing steel stud welding machines suffer from problems such as unstable welding, poor precision, and high cost when welding aluminum alloys. In particular, the difference between the oxygen affinity and magnetic properties of aluminum alloys leads to uneven welding and unstable magnetic lines of force, and there is a lack of argon gas protection.
A six-axis robot is used in conjunction with a PLC controller, a TIG stud welding torch, and a pull-arc stud welding machine. A secondary inverter power supply controlled by a digital signal processor (DSP) outputs an AC square wave, and an argon gas arc-gathering kit is installed on the pull-arc stud welding machine to achieve argon gas protection.
This has improved the stability and cost-effectiveness of aluminum plate stud welding, reduced production costs, and improved welding quality.
Smart Images
Figure CN223210640U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automobile processing, in particular to an aluminum plate stud welding automatic workstation. Background Art
[0002] Aluminum's thermal and electrical conductivity are four times greater than steel. Insufficient heat input, poor arc focus, and arc blow can lead to large spatter and uneven fusion in aluminum stud welding. Aluminum alloys are oxygen-friendly, and a dense oxide film easily forms on their surfaces, causing incomplete fusion during stud welding. The stability and precision of welding equipment are crucial for consistent weld quality. Unstable welding parameters can lead to insufficient strength and torque in aluminum alloy stud welding, leading to frequent false welds and stud dropouts. The increasing demand for lightweight structures in the automotive industry has led to the widespread use of lightweight materials such as aluminum alloys. However, aluminum stud welding requires more energy than steel stud welding, and the energy output of existing steel stud welding machines is insufficient. Furthermore, aluminum is a highly reactive metal, requiring welding under argon shielding gas. Existing steel stud welding machines and torches lack shielding gas output. Magnetic deviation is greater when the arc is near non-ferromagnetic materials than when it is near steel, due to the higher magnetic resistance of aluminum compared to steel. During welding, strong magnetic field lines outside the workpiece can cause arc instability. Using ceramic rings and additional shielding with protective gas can reduce arc blow. Therefore, all of the above techniques suffer from welding instability and poor accuracy. Utility Model Content
[0003] In view of the above problems, the purpose of the present invention is to provide an aluminum plate stud welding automated workstation with stable welding and high cost rate, and with reduced production costs.
[0004] To achieve the above objectives, the present invention provides an automated aluminum plate stud welding workstation, characterized by comprising a six-axis robot, a PLC controller mounted on one side of the six-axis robot, a TI G stud welding gun and a drawn arc stud welding machine mounted on the ends of the six-axis robot, and a fixture mounted on one side of the six-axis robot. The PLC controller is connected to the TI G stud welding gun, the drawn arc stud welding machine, and the six-axis robot.
[0005] In some embodiments, both the TIG stud welding gun and the drawn arc stud welding machine are controlled by a digital signal processor (DSP) and are secondary inverter power supplies that directly output a programmable AC square wave.
[0006] In some embodiments, the drawn arc stud welding machine is provided with an argon arc focusing kit comprising an argon gas protector and a pressure detector.
[0007] The present invention offers the advantages of stable welding with a high cost-efficiency, and reduces production costs. The improved structure utilizes a TIG stud welding gun and a drawn-arc stud welding machine mounted on the end of a six-axis robot. Compared to existing welding equipment, the stud welding gun's main unit differs in that it uses an inverter AC welder, while inverter DC welders are predominant in the existing technology. Furthermore, the drawn-arc stud welding machine is equipped with an argon arc focusing kit, providing argon gas protection. Furthermore, the TIG stud welding gun and drawn-arc stud welding machine have a wider range of applications than existing technology, and can weld both iron and aluminum. This achieves stable welding with a high cost-efficiency, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural diagram of the utility model;
[0009] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of A in the figure. DETAILED DESCRIPTION
[0010] The utility model will be further described in detail below with reference to the accompanying drawings.
[0011] like Figure 1-2 As shown, an automated aluminum stud welding workstation includes a six-axis robot 1, a programmable logic controller (PLC) controller 2 mounted on one side of the six-axis robot 1, a TIG stud welding gun 3 and a drawn arc stud welding machine 4 mounted on the ends of the six-axis robot 1, and a fixture 5 mounted on one side of the six-axis robot 1. Aluminum alloy welding is often challenging due to its physical and chemical properties, which differ from those of traditional steel. Aluminum stud welding is one of many aluminum welding methods. It primarily achieves a reliable connection by firmly welding the stud to the aluminum sheet through arc melting and pressure application. The PLC controller is connected to the TIG stud welding gun 3 and the drawn arc stud welding machine 4, both of which are connected to the six-axis robot 1. Both the TIG stud welding gun 3 and the drawn arc stud welding machine 4 are controlled by a digital signal processor (DSP) and utilize a secondary inverter power supply, directly outputting a programmable AC square wave. The drawn arc stud welding machine 4 is equipped with an argon arc focusing kit 6.
[0012] The working principle is that a six-axis robot 1 is used to carry a TIG stud welding gun 3 and a drawn arc stud welding machine 4 to perform preheating before welding and stud welding respectively. The PLC controller 2 controls the robot to move to the specified position and issues a preheating instruction. After receiving the instruction from the PLC controller 2, the TIG stud welding gun 3 outputs an arc at the specified position and preheats the specified position under the set parameters. After completion, the PLC controller 2 successively issues argon protection and stud welding instructions. After receiving the instruction from the PLC controller 2, the drawn arc stud welding machine 4 performs stud welding at the specified position and completes the disconnection of the argon protection.
[0013] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.
Claims
1. An aluminum plate stud welding automated workstation, characterized in that: It includes a six-axis robot, a PLC controller provided on one side of the six-axis robot, a TIG stud welding gun and a drawn arc stud welding machine provided on the end of the six-axis robot, and a fixture provided on one side of the six-axis robot; The PLC control product is respectively connected with the TIG stud welding gun, the drawn arc stud welding machine and the six-axis robot.
2. The aluminum plate stud welding automated workstation according to claim 1, characterized in that: The TIG stud welding gun and drawn arc stud welding machine are both controlled by a digital signal processor DSP and are secondary inverter power supplies that directly output programmable AC square waves.
3. The aluminum plate stud welding automated workstation according to claim 2, characterized in that: The drawn arc stud welding machine is provided with an argon arc focusing kit.