![]() This is easier if you load the truck from the side. ![]() Please note that depending on the truck type, you may have to load the truck in reverse order, so that the part needed last is loaded first and stored in the very back of the truck. There, the goods are unloaded and brought directly to the line, maintaining sequence all the way to the line. The supplier loads the part on the trucks in the right sequence, and drives the goods to the main line. ![]() It is also possible to have the products shipped in sequence. On the plus side, if you have the parts in the inventory, this approach is most flexible to adjust for short-term changes in the sequence. Often, a small buffer is added between the picking and the actual assembly to reduce waiting times of both the pickers (if the main line is slower) and the main line (if the picker is slower). The worker (or computer) would need to know the sequence of production, and then simply select the matching parts for this sequence in the right order. You have an inventory, and a worker (or a computer system) picks the required parts from the inventory and creates a sequence. This is pretty much the same as the large inventory mentioned above. There are different ways to create a sequence. On the downside, this approach may require quite a bit of walking and searching for the right part. The inventory could have many parts of popular colors, and have the number of less popular colors that match the demand. This would work with both high-volume and low-volume components. It is more common to have a larger (non-supermarket) inventory, and simply pick whatever part you need. Hence, this option works only for a combination or small number of variants and small physical part size. You cannot keep all colors in stock in a supermarket. Sure, there are some standard colors that are common, but there are also lots of other rarer colors. The more variants you have, the more cumbersome it will be to have them all in the supermarket. However, this would work only if you have a limited number of variants. You could use a supermarket instead of a just in sequence delivery. There are two possible alternatives to Just in Sequence. In particular, the seats are often delivered from a nearby supplier just in sequence. Other examples of Just in Sequence are the seats, the dashboards, and many other parts of the car. Hence, the doors in automotive merely have to maintain the sequence in which they are painted, which is together with the rest of the car body. Only toward the end are the doors reinstalled. On a side note, cars are usually painted together with their doors, but the doors are then removed again for ease of access for other assemblies. Since Just in Sequence is not easy to begin with, try to avoid this indirect sequencing until at least your direct sequencing runs reasonably trouble free. However, the longer such a sequence runs, the more complex it will be. In other words, you have an initial sequence of the main car bodies, so you produce the doors just in sequence for the main body and then produce the door handles just in sequence to the doors that are in sequence to the main body. You could in theory extend the sequence to sub-components. If the doors are supplied just in the right sequence, the worker simply has to mount the next door and everything will be fine. Naturally, the color of the door has to match the color of the rest of the car. Hence, the part type has to match the main product. Due to the large number of options in automotive, there is a low-volume, high-mix production where every car is different. The prime example is (as often) in the automotive industry. Ideally, the person assembling the components does not have to choose from different parts, but merely picks the next part in the supply queue for assembly. Parts and components needed for production are delivered just in the sequence they are needed. This first post details the basics of Just in Sequence production. In this series of posts I would like to talk about what Just in Sequence is, how it works, and what to be aware of. In automotive it is sometimes also called In Line Vehicle Sequence (ILVS). ![]() It combines well with “Just in Time” (JIT) and “Ship to Line” (STL), but neither are a prerequisite for Just in Sequence. ![]() “Just in Sequence” (JIS) is a good way to supply material to high-mix, low-volume production. ![]()
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