Flexible Floor Welding System/BIW Engineering

Flexible Floor Welding System

1. Process introduction:

The floor welding line flexible system mainly completes the assembly and welding work of the front, middle and rear floors and engine compartment. The floor line can realize the flexible switching of two types of models. Using the core technology of the flexible sliding table and the split switching system, the middle floor area and the rear floor area can be welded together in one line. The production cycle can be 60JPH, and the automation rate can reach more than 90%.

Pic1

Pic2

2. Project case:

Pic1-3

1. Accompanying trolley through production line

The typical form of this production line is shown in Figure 4. It generally adopts the same trolley-type fixtures in different quantities, and is driven by a chain to a predetermined station. After manual feeding and manual welding, each car body is placed on the same fixture and different working stations. Complete the assembly. This form of production line has low production efficiency, high labor intensity, single-species special-line production, and the accuracy and quality of products are not easy to guarantee. It is a commonly used production form in the early days and is generally suitable for small batch production.

2. Automatic production line for single vehicle

The typical form of the production line is shown in Figure 5. It generally uses fixed special fixtures and cooperates with manipulators for automatic welding and assembly. Materials are automatically transported and put in by cranes, and reciprocating shuttle machines are often used for product transportation between each station. It is characterized by high production efficiency, high degree of automation, and stable quality, but it is still a single-species production line.

3. Multi-model automatic mixed production line

The form of this production line is basically the same as that of the single-model automatic production line. The main difference is that the main welding production line adopts multi-model mixed line production, generally 1 to 3 models. The assembly fixture adopts the special series connection method for each model. The investment cost of this equipment is relatively high, and the independent assembly fixtures and surrounding transport relations of each model need to meet the requirements of the production capacity of the whole line, and the equipment flexibility is poor, and the investment efficiency of automation equipment is low.

The other way is to use a four-sided rotary fixture, which automatically switches the corresponding production according to different models, and the manipulator performs automatic assembly. Its main form is shown in Figure 7. As for the floor sub-assembly fixture, it is generally moved outside the main welding line to set up the line independently. The main welding line is usually a repair welding fixture except for the assembly fixture, which is easier to share with multiple models.