1. A manufacturing process visualization apparatus comprising:at least one processor configured to implement:
a data receiving unit which receives apparatus data from at least one production apparatus of a manufacturing process line processing a plurality of products; and
a matching unit which extracts, from the received apparatus data, an introduction time of a product introduced in a production apparatus among the at least one production apparatus, and a discharge time of the product discharged from the production apparatus, and generates a graph having a start point indicating the introduction time, an end point indicating the discharge time, and a slope indicating a processing speed of the production apparatus; and
a screen display which displays the generated graphic on a screen,
wherein the matching unit determines, based on the received apparatus data, at least one of an inter-production apparatus flow time, an inter-production apparatus time difference information, whether the inter-production apparatus time difference information has a negative number, whether the inter-production apparatus time difference information falls within an error range which is preset with respect to an average of the inter-production apparatus time difference information, a result of comparing a number of product flow lines and a number of total production apparatuses, and whether a product model type applied to the manufacturing process line is changed, and
wherein the screen display displays a flow line chart in which flow information about the products is shown in the graph, and a process production information box comprising data reliability, the reliability indicating, as a result of collection of product flow information about a plurality of production apparatuses including the at least one production apparatus, a ratio between a maximum number of products to be processed and a number of products for which the product flow information are matched from introduction into the manufacturing process line to discharge from the manufacturing process line.