Methods forming a shipping and display container from a blank assembly using a pre-fold mandrel section

Patent metadata

Field	Value
Publication number	US-11565492-B2
Application number	US-202017087256-A
Country	US
Kind code	B2
Filing date	Nov 2, 2020
Priority date	Sep 6, 2013
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A method for forming a container from a blank assembly including a tray blank and lid blank includes folding a first portion of the blank assembly about at least a first face of a first mandrel to form a partially formed container, and transferring the partially formed container towards a second mandrel using a transfer assembly that extends through the first face of the first mandrel. The method also includes transferring the partially formed container from the first mandrel to the second mandrel along a pair of guide rails extending between the first mandrel and the second mandrel, wrapping a second portion of the blank assembly about at least a first face of the second mandrel to form the container, wherein the first face of the second mandrel opposes the first face of the first mandrel with respect to a vertical direction, and ejecting the container from the second mandrel.

First claim

What is claimed is:

1. A method of forming a container from a blank assembly using a machine, the blank assembly including a tray blank coupled to a lid blank, the tray blank defining a tray portion of the container, the lid blank defining a lid portion of the container that is separable from the tray portion of the container, the machine including a mandrel assembly having a first mandrel and a second mandrel positioned downstream from the first mandrel, the method comprising:
folding, using a pre-folding assembly, a first portion of the blank assembly about, and in face-to-face contact with, at least a first face of the first mandrel to form a partially formed container;
transferring, using a transfer assembly, the partially formed container from the first mandrel to the second mandrel along a pair of guide rails extending between the first mandrel and the second mandrel;
wrapping a second portion of the blank assembly about, and in face-to-face contact with, at least a first face of the second mandrel to form the container, wherein the first face of the second mandrel opposes the first face of the first mandrel with respect to a vertical direction; and
ejecting the container from the second mandrel.

2. The method of claim 1 , wherein folding the first portion of the blank assembly further comprises:
rotating a pre-folding assembly from a first position to a second position, the pre-folding assembly including folding rods and a tray panel folder, wherein the folding rods are configured to contact and rotate lid side panels about the first mandrel, and the tray panel folder is configured to contact and rotate a tray side panel about the first mandrel; and
holding the folding rods and the tray panel folder in the second position while the partially formed container is transferred from the first mandrel to the second mandrel to maintain alignment of the partially formed container.

3. The method of claim 1 , wherein folding the first portion of the blank assembly further comprises:
folding at least a first lid side panel of the lid blank and an opposing second lid side panel of the lid blank into face-to-face contact with opposing side faces of the first mandrel; and
folding at least a first tray side panel into face-to-face contact with the first lid side panel.

4. The method of claim 3 , wherein wrapping a second portion of the blank assembly further comprises folding a third lid side panel of the lid blank into face-to-face contact with the first face of the second mandrel.

5. The method of claim 1 , wherein transferring the partially formed container further comprises using a pusher foot that extends through the first face of the first mandrel to transfer the partially formed container along the pair of guide rails from the first mandrel to the second mandrel.

6. The method of claim 1 , further comprising applying adhesive to the partially formed container as the partially formed container is transferred from the first mandrel to the second mandrel.

7. The method of claim 6 , wherein applying adhesive to the partially formed container further comprises applying the adhesive using adhesive applicators arranged in a substantially horizontal orientation.

8. The method of claim 1 , wherein wrapping the second portion of the blank assembly about the first face of the second mandrel further comprises engaging the first portion of the blank assembly against an opposing second face of the second mandrel during said wrapping.

9. The method of claim 8 , wherein engaging the first portion of the blank assembly comprises lowering a plate-over tool into engagement with the blank assembly.

10. The method of claim 1 , wherein transferring the partially formed container from the first mandrel to the second mandrel comprises transferring the partially formed container in a blank transfer direction into engagement with a stopper that impedes further motion of the partially formed container in the blank transfer direction.

11. The method of claim 10 , wherein ejecting the container from the second mandrel comprises advancing the container past the stopper, which does not impede motion of the container in the blank transfer direction.

12. The method of claim 1 , wherein the blank assembly includes a plurality of panels, wherein folding the first portion of the blank assembly about the first face of the first mandrel comprises folding a first subset of a plurality of panels downward with respect to the vertical direction.

13. The method of claim 12 , wherein wrapping the second portion of the blank assembly about the first face of the second mandrel comprises folding a second subset of the plurality of panels upward with respect to the vertical direction.

14. The method of claim 1 , further comprising:
folding a third portion of the blank assembly against a second face of the second mandrel to form a bottom surface of the container, wherein the second face of the second mandrel is orthogonal to the first face of the second mandrel.

15. The method of claim 14 , wherein folding the third portion of the blank assembly against the second face of the second mandrel comprises rotating a plurality of bottom panels against an ejection plate of the second mandrel, and
wherein ejecting the container from the second mandrel comprises advancing the ejection plate in a blank transfer direction to disengage the container from at least the first face of the second mandrel.

16. A method of forming a container from a blank assembly using a machine, the blank assembly including a tray blank coupled to a lid blank, the machine including a mandrel assembly having a first mandrel and a second mandrel positioned downstream from the first mandrel, the method comprising:
folding, using a pre-folding assembly, a first portion of the blank assembly downwardly, in face-to-face contact with, and around the first mandrel to form a partially formed container;
transferring the partially formed container from the first mandrel to the second mandrel;
wrapping a second portion of the blank assembly upwardly, in face-to-face contact with, and around the second mandrel to form the container; and
ejecting the container from the second mandrel.

17. The method of claim 16 , further comprising applying adhesive to the partially formed container as the partially formed container is transferred from the first mandrel to the second mandrel.

18. The method of claim 17 , wherein applying adhesive to the partially formed container further comprises applying the adhesive using adhesive applicators arranged in a substantially horizontal orientation.

19. The method of claim 16 , wherein wrapping the second portion of the blank assembly upwardly and around the second mandrel further comprises engaging the first portion of the blank assembly against a top face of the second mandrel during said wrapping.

20. The method of claim 19 , wherein engaging the first portion of the blank assembly comprises lowering a plate-over tool into engagement with the blank assembly.

Assignees

• Westrock Shared Services Llc

Inventors

• Graham Thomas D
• Aganovic Amer
• D'Alesio Claudio

Classifications

• B31B50/30

  the mandrels moving · CPC title

• B31B50/52

  by reciprocating or oscillating members, e.g. fingers (by plungers moving through folding dies B31B50/44) · CPC title

• B31B50/07

  by air pressure or suction · CPC title

• B31B2120/102

  with a hinged cover · CPC title

• B31B50/28 Primary

  around mandrels, e.g. for forming bottoms · CPC title