Workpiece conveying system of white automobile body welding production line and control method thereof

Abstract

The invention discloses a workpiece conveying system of a white automobile body welding production line. The workpiece conveying system comprises a base frame, guide rails, conveying units, a slidingtable, an alarm device and a control system, wherein the base frame is fixed on the ground, the alarm device and the guide rails in the Y direction are fixedly arranged on the base frame, a displacement sensor I is arranged on the guide rails, the guide rails are located above ground equipment of the welding production line; the guide rails are arranged at the upper end of the base frame in the conveying direction of workpieces in the production line, the upper end of the conveying unit cooperates with the guide rails, the lower end of the conveying unit is suspended, and the sliding table islocated below the conveying unit; and the workpiece to be conveyed is placed on the sliding table, and the control system controls the conveying unit and the sliding table to act. The invention further discloses a control method of the workpiece conveying system of the white automobile body welding production line. The workpiece conveying system can be erected above the production line to achievelong-distance conveying of the workpieces, and the occupied area of the production field is small, the control system controls the action of each action piece, the control efficiency is high, and thereliability is high.

Description

technical field [0001] The invention relates to the field of automated production, in particular to a workpiece conveying system and a control method for a body-in-white welding production line. Background technique [0002] The automated production line is the route that the product production process passes through, that is, the route formed by a series of production line activities such as processing, transportation, assembly, and inspection, starting from the entry of raw materials into the production site. The production line is widely used in industrial production because of its high degree of automation, high production efficiency, and high utilization rate of equipment. Nowadays, most automobiles are processed by automatic production lines, such as the welding production line of automobile rear side panel assembly. [0003] Automated production lines such as body-in-white welding production lines generally have the following situations: [0004] In the body-in-white...

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Problems solved by technology

[0004] In the body-in-white welding production line, considering the cost of production, the layout of the production line, and the utilization rate of equipment, the transportation of workpiece A between workstations in a production line is discontinuous. For example, after workpiece A is processed at workstation I , Workstation II and Workstation III are used to process workpiece B, and workpiece A and workpiece B are combined to process workpiece C at workstation IV, which leads to the need for a conveyor system to transport workpiece A from workstation I to Workstation IV, while the existing conveying system from Workstation II to Workstation IV mainly transports workpiece B, which is not convenient for conveying workpiece A at the same time; Transportation cannot realize the transportation of workpiece A between workstations; on the other hand, if a special ground conveyor belt is built to transport workpiece A, it will occupy a large production site, which is not convenient for the arrangement of equipment, etc.

[0005] At the same time, on the body-in-white welding production line, since the workpieces are parts of the body-in-white and have irregular shapes, the clamping and positioning of the workpieces on the conveying system are highly required. Otherwise, the misalignment and sliding of the workpieces during the conveying process will affect the welding of the workpieces in the next process. Seam position, which affects welding quality

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