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Conveyor belts in assembly lines are classified according to the degree of continuity in the production process into ① continuous assembly lines. It refers to the fact that the processing of the items being manufactured on the assembly line proceeds continuously, without any pauses or delays. It is suitable for mass production and represents an ideal form of assembly line. ②Intermittent pipeline. Due to the unequal processing times of various steps on the production line, or because these times are not integer multiples of each other, production capacity becomes uneven, resulting in delays and time interruptions for the products as they move from one step to another. Conveyor belts in assembly lines can be classified according to the product transportation method into ① assembly lines without dedicated transportation equipment. The pipeline operators use their hands along with ordinary conveying tools to transfer the products to the next processing stage. ② There are dedicated transportation equipment pipelines. Specialized transportation equipment is used to move products between processes. Secondly, on the basis of understanding pipeline types, knowing the applicable conditions for the production of pipeline conveyor belts is also an essential step in pipeline design. (1) A production line can break down or combine the various steps in product manufacturing, with the time taken for each step being equal to or an integer multiple of the cycle time. (2) The factory buildings of assembly-line enterprises have sufficient floor space and production area to accommodate assembly-line equipment, process units, and transportation systems. (3) The output volume of the enterprise’s products must reach a certain level to ensure that all work stations (equipment) on the assembly line are fully utilized. (4) The product structure is basically finalized, with good workability and interchangeability. (5) The product range is stable, and it are products that are in continuous high demand. (6) Raw materials and components must be standardized and specified, and available for supply on time.