Kunshan sled conveyor line in the automotive production line application cases

Hey, did you know? The sled conveyor line made in Kunshan is quietly carrying half of China's automobile manufacturing industry's logistics burden! Today we will break open the crumbs to talk about - this pile of iron frame by virtue of what let the bosses of car companies willing to pay?

First, the painting line: 200 ℃ high temperature under the "steel camel"

​"Won't the sled bake in the paint booth?"--Good question! Kunshan Xinyuan to a parts factory in Foshan to do the programme, the skid directly into the 280 ℃ drying furnace, the key is in the material:

• ​Skid frame: High-temperature resistant stainless steel base, welding must be done after theStress Relief by AgeingOtherwise, thermal expansion and contraction are quasi-deformation
• ​roller bearingHigh-temperature grease, ordinary grease would have turned into smoke.
• ​Guide Wheel Protection: Polyurethane cladding has to withstand continuous baking at 200°C.

Take a real case: Huizhou Guanjie with Kunshan sled system to build the coating line, the production beat!48 pieces/hourI don't know. And guess what? The bodywork goes from pre-treatment to spraying to drying, all without manual intervention, and even the film uniformity is a cut above manual transfer!

Welding line: millimetre precision "cradle of the car body".

​"One shake of the white body and you have to rework it, right?"--The doorway here is deep! Look at the operation of a welding shop in Kunshan:

The sled is not just a mover and shaker here, it's theMobile assembly table! The torch works directly on the sled, so:

• The main locating pin must be used40Cr carburised steel(hardness HRC58-62), otherwise the weld slag spatters a few times will be scrapped.
• The support blocks have to be pressed against the longitudinal beams and just top the floor skin? You'll get a crater in a minute.

Third, the assembly line: will be "aerial gymnastics" logistics experts

​"The assembly workshop is densely packed with equipment, how can the skid be drilled through?"--Watch the divine operation of Geely's Ningbo plant:

1. ​The Grand Divergence of Heaven and Earth: Lift lifts the body to a height of 8 metres directly over the equipment cluster
2. ​limbo step (dance): Double chain conveyor with sled on accumulation chain, waiting for the assembly position to become free.
3. ​harrier's somersault: 180° turntable for body turn-around, eliminating 30 metres of turn-around lanes

The best one is that one.carousel! Normal equipment takes 6 steps to move, Kunshan's improved version only takes 4:

markdownmake a copy of
1. Sled rolled into conveyor table  
2. Rotate while panning (eliminates separate rotation time)  
3. Precise matching to the next production line  
4. Empty skid spiral return  
​The beat was compressed from 65 seconds to 52 seconds--Don't look just 13 seconds faster, 80 more cars off the line in a day!

Fourth, personalised customisation: small batch to play with flowers
​"We make speciality vehicles, so a universal sled won't work, will it?"-Kunshan McWheel Polyurethane takes on trickier jobs:

​Explosion-proof vehicle production line: Installation of anti-static coating on sled and change of rollers to conductive rubber
​saloon: Customised 5.8m lengthened skid with pre-arched rails to counteract sagging deformation
​Electric car chassis: Support point avoiding battery pack, locating pin changed to nylon to prevent short-circuit

One tuner went even further - mounting the sled on aRFID chipIt automatically switches the positioning mode from one model to another. It took 2 hours to change the production line and adjust the workpiece, now? Now? The next car is straight to work!

Personal opinion: Don't be fooled by the "case"!
A heartfelt word from a veteran of over a decade of automotive engineering:

​"Don't just look at how awesome the case is, it's all about the fit!"​

Paint line selectionStainless steel skid + temperature resistant guide wheel(expensive but saves three years of maintenance)
Welding line deadheading0.3mm positioning accuracy"The solder joints are all out of alignment.
Assembly Line EssentialsDouble column lifts + mechanical safety pins--It's a life preserver for the workers when they're overhauling.

That's right. You have to check it every week.Thin oil lubrication quantity! I've seen too many factories planted in this: a factory in Foshan, the chain lack of oil stuck.Lost 200,000 in one day of shutdownI've got enough lubricant for ten years! Next time you go to the factory, don't just look at the equipment running happily, crouch down and feel the track temperature--Stop the machine when it's over 60 degrees centigrade.The bearings are going to revolt!