Rotary tray former

Details Rotary tray former Rotary tray former

1977-06-21

1979-01-02

Goldberg, Howard N.

B31B 102

Patent

active

041321561

ABSTRACT:
A rotary receptacle forming apparatus is disclosed which automatically forms a receptacle from a precut and prescored flat receptacle blank. Individual ones of the receptacle blanks are fed by a feeding mechanism from a stack of receptacle blanks to a die. According to the present invention, the rotating mandrel and the die cooperate with each other to achieve linear motion. This is accomplished by constantly maintaining the rotating mandrel in a fixed orientation parallel to the die while the mandrel passes through the die and, at the same time, enabling the die to track the mandrel by moving radially of the circular path of the mandrel. After the mandrel moves through the die, movable forming means on the mandrel fold the corner hinges on the receptacle blank. The driving force for the movable forming means is derived from the movement which enables the mandrel to maintain a fixed orientation relative to the die. The completed receptacle is removed from the mandrel by stripping fingers positioned adjacent the circular path of the mandrel. Because the mandrel is maintained in the same fixed orientation during removal of the receptacle, these stripping fingers can be positioned to remove the receptacle without interfering with the movement of the mandrel in the circular path.

REFERENCES:
patent: 1864632 (1932-06-01), Bergstein
patent: 2821054 (1958-01-01), Ritscher
patent: 2931276 (1960-04-01), Zerlin
patent: 3469508 (1969-09-01), Klapp
patent: 3683755 (1972-08-01), Lattke
patent: 4012999 (1977-03-01), Crawford

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