Auto parts car front bumper mold plastic injection mold
A car bumper is a safety device that absorbs and mitigates
external impact and protects the front and rear of the
vehicle body. Generally consists of plastic bumpers,
cushioning materials and beams. Plastic bumpers have
strength, rigidity, and decorativeness. From a safety point
of view, a car can play a cushioning role in the event of a
collision and protect the front and rear body. From the
appearance, it can be naturally combined with the car body
to form a natural One body, with good decoration, has
become an important part to decorate the appearance of the
car.
1: Determination of bumper shell material
Regulatory requirements: The front and rear protection
devices of the car must ensure that the vehicle will not
cause serious damage to the vehicle when a light collision
of 4km / h occurs. In addition, the front and rear bumpers
not only protect the vehicle and reduce vehicle damage, but
also protect pedestrians and reduce the injuries to
pedestrians in the event of a collision. Therefore, the
shell material of the bumper should have the following
characteristics:
1) With less surface hardness, it can reduce pedestrian
injuries;
2) Good elasticity and strong resistance to plastic
deformation;
3) Good vibration damping effect, can absorb more energy in
the elastic range;
4) Resistant to humidity and dirt;
5) Has good acid and alkali resistance and thermal
stability.
Modern car bumper shells are mostly made of plastic or
fiberglass. In order to reduce the cost of trial
production, save mold production costs, and also shorten
the trial production cycle, in the concept car trial
production, consider using FRP glass fiber reinforced epoxy
hand lay-up process.
The materials of the bumper are generally PP + EPEM + T20
or PP + EPDM + T15. EPDM + EPP is also more versatile. ABS
uses less and is more expensive than PP. The thickness of
the bumper is usually 2.5-3.5mm, and the gas-assisted
molding can be made thinner.
Note that if the bottom mesh of the bumper is integrated
with the bumper, the thickness of the mesh must be more
than 2.0mm, and the die angle should be increased as much
as possible (2 degrees or more). If the mesh is separate,
the mesh wall of 1-1.5mm is sufficient.
2: Ergonomic check needed for bumper design
First, the vehicle's passability. Second, the license
check. Third, check the air intake area. 4. Checking at low
speed 5. Pedestrian protectionFeasibility of tow hook
work.
With the popularization of automobiles, the safety of
automobiles has received increasing attention, and the
requirements of regulations on automobile safety will
become higher and higher. At the same time, the
increasingly serious energy crisis also requires cars to be
as lightweight as possible. How to make occupants and
pedestrians safer, to make cars less susceptible to damage
during a collision, and how to minimize the weight of parts
and components are more issues that need to be considered
when designing bumpers.
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Odin Mould(atplas) is a professional manufacture of
gas-assisted injection mold, daily-use plastics mould,
SMC/BMC mould, thin-wall injection mold, injection
molding OEM,we have cultivated an excellent team and
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Different needs of customers.
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