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%.
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2. Project case:
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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.
