Disclosed herein, amongst other things, is a molding system (100) comprising control structure that includes a mold (120) that is configured to mold a molded article (180), a controller (170) with which to control the operation of the molding structure, and a vision system (174) with which to appreciate a parameter of the molded article (180) for control of molding system (100).

A tubular product manufacturing apparatus successively delivers an injection molded tubular shaped body in the delivery direction. The manufacturing apparatus detects a defect on the surface of the molded body passing through the detection position in the delivery direction. The manufacturing apparatus separates a tubular product from the molded body. When a portion having a predetermined length in the molded body passes the detection position without detecting a defect, the manufacturing apparatus separates a tubular product from the molded body, which contains the portion having the predetermined length. When a defect is detected before a portion having the predetermined length in the molded body BT passes through the detection position, the manufacturing apparatus separates the defective tubular product from the molded body. The length of the defective tubular product is shorter than a good product length which is the length of the tubular product including the portion of the predetermined length.

A fitting-together system for fitting together two parts and includes a thumbwheel having an axis of revolution and coming into abutment on the second part to fitted on the first part, two lever arms able to rotate about a rotation axis offset with respect to said axis of revolution, at least one force sensor secured to an element of the fitting-together system and arranged to emit an electrical value proportional to the deformation suffered when said thumbwheel rests on the second part, and a control unit connected to said at least one force sensor and arranged to compare the electrical value with a predefined interval of values.