Chery S15 main production line project in Pakistan
1. Project name:
Chery S15 main production line project in Pakistan
2. Project time:
April 2020
3. Project location
Chery Pakistan Plant
4. Project introduction:
Model: S15 model
Capacity: 5JPH
Beat: 576S
Main off-line conveying form: roller bed skid conveying system
5. Core technology:
1. Roller bed skid conveying system (independent research and
development)
2. Assembled slide mechanism
3. Gas-electric combination PLC control system
As one of the four major processes in the automotive industry, the
welding process is self-evident. It shoulders the important mission
of forming the body and providing a supporting frame for the
vehicle. In addition to ensuring the appearance and shape, it must
also ensure that all parts of the final assembly The precision of
the component installation point, so its process is far more
complicated than the other three major processes. The planning and
layout of the production line not only need to consider from the
aspects of precision assurance, production efficiency, distribution
logistics, and storage, but are also limited by the plant area and
structure, Existing conditions such as painting corridors. There is
no perfect layout plan, only the most suitable layout plan at
present.
The structure of the assembly station
The mechanism of the assembly station needs to be considered in
combination with the side wall conveying method, which is mainly
limited by the site and the type of production model. There are
three commonly used types: reversible slide table, switchable
flexible slide table, and back buckle type.
(1) Flip Slider
Turn the side wall from horizontal to 90° by flipping the fixture,
and use the sliding table to assemble the side wall. This method
can be used with the side wall conveying method and the single-side
side wall conveying method. It does not need to pre-assemble the
side wall, and it can be directly welded, but the efficiency is
low. , not suitable for high-beat production lines.
(2) Switchable flexible sliding table
The switchable flexible sliding table is mainly composed of two
parts: the sliding table base and the switchable fixture. The
fixture can be switched as a whole. By switching to produce
different platform models, the production efficiency is high.
However, due to the large size of the sliding tables on both sides,
the side walls cannot be pre-installed. An additional
pre-installation station is required.
(3) Back button type
The back buckle type is equipped with a rotating hinge mechanism on
the top to connect the fixtures on both sides. After rotating down,
it is buckled on the side wall for positioning welding. Its main
advantage is high production efficiency, but its flexibility is
poor. Only a single model can be produced, and pre-installation
must be added. If the output of a single model is high, more
stations are used.
There are various forms of the assembly station, not limited to the
above three forms, and the assembly plan can be selected according
to the actual situation, as long as the accuracy and efficiency of
the car body are taken into account, and it is suitable for the
current form requirements. But no matter what kind of plan, it is
necessary to formulate appropriate three-dimensional size
requirements of length, width and height, and provide data input
for simultaneous engineering and layout.
