摘要:
In a packaging machine in which products to be packaged are inserted in a tubular wrapper which is then closed by two closure units in cascade, a dimensional characteristic of the products, such as their heights, variations of which can cause corresponding variations in the overall lengths of the packages formed by the tubular wrappers, is monitored in order to bring about corresponding variations in the phase difference in the operation of the closure units.
摘要:
A machine for wrapping products, wherein a first conveying means presents a number of seats for successively feeding the products at constant speed and along a predetermined route through a number of fixed work stations for forming about each product at least one tubular wrapping having two opposite end portions projecting from the respective ends of the product, and for closing the end portions of each tubular wrapping about the respective ends of the product; closure of the end portions being performed in a fixed closing station wherein second conveying means reverse each seat in such a manner as to arrest the same for a given length of time.
摘要:
An apparatus for the transverse welding of a tape traveling in a machine direction, comprising: a stationary structure, a rotary structure rotatable with respect to the stationary structure about a rotation axis perpendicular to said machine direction, a plurality of welding units carried by said rotary structure and spaced apart in a circumferential direction, wherein each of said welding units comprises an inner welding element fixed relative to the rotary structure and an outer welding element cyclically movable with respect to the rotary structure between a release position and an operative position, and vice versa, wherein each of said outer welding elements during the movement from said release position to said operative position, and vice versa, performs an angular rotation movement about a respective radial axis perpendicular to said rotation axis, and a linear translation movement along said radial axis.
摘要:
A method and device for wrapping cylindrical products whereby each product is fed, together with a portion of a respective portion of wrapping material, into a respective seat on a conveyor, and is fed by the conveyor into peripheral contact with a rolling surface by which it is turned about its axis and wrapped in the aforementioned portion of wrapping material; each seat being defined by idle rollers parallel to the axis of the product, and by mobile stop elements designed to cooperate laterally with the product for angularly locking the same inside the seat subsequent to rolling.