Tray-forming apparatus

Details Tray-forming apparatus Tray-forming apparatus

1986-09-05

1987-09-01

Hoag, Willard E.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

425155, 425394, 425398, 425412, B29C 5120, B29C 5502

Patent

active

046906665

ABSTRACT:
A die set is provided for forming a multi-compartmented tray from sheet material. The die set includes a female die assembly formed to include at least two mold cavities and a drawing surface bounding said mold cavities, a first compartment-former for pressing sheet material into a selected mold cavity to form a compartment therein, a second compartment-former for pressing sheet material into the remaining mold cavities to form compartments therein, and a draw ring for holding sheet material against the drawing surface during movement of the first and second compartment-formers into their respective mold cavities. The first compartment-former includes a first die for pre-forming the comparment, a second die for finish-forming the compartment, and a projection system for moving the first die relative to the second die in a direction toward the cavity to a leading position. A control system is also provided for disabling the projection system at a predetermined position of the first die in the cavity to permit relative movement between the first and second dies during finish-forming of the tray compartment. Such relative movement allows the first die to relinquish its leading position as the second die finish-forms the tray compartment to relieve pressure applied to sheet material at a predetermined stage of each molding cycle so that sheet material is able to flow within the selected mold cavity during the drawing process.

REFERENCES:
patent: 4149841 (1979-04-01), Patterson
patent: 4246223 (1981-01-01), Patterson
patent: 4514353 (1985-04-01), Alexander et al.

Affiliated with

Also associated with

Rating

Tray-forming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tray-forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tray-forming apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1263136