Molded fiber product production line

Patent metadata

Field	Value
Publication number	US-11738485-B2
Application number	US-202017095244-A
Country	US
Kind code	B2
Filing date	Nov 11, 2020
Priority date	Nov 11, 2019
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A molded fiber part former includes a first forming mold defining a first mold area and at least one fluid inlet. The molded fiber part former also includes a wall substantially surrounding the first mold area. The molded fiber part former includes a fluid channel disposed adjacent to and surrounding the wall, wherein the channel is fluidically connected to the at least one fluid inlet and defines a fluid channel outlet.

First claim

What is claimed is:

1. A molded fiber part production line comprising:
(a) a forming station comprising:
a slurry tank configured to receive a fiber slurry comprising a plurality of fiber and a liquid;
a forming mold comprising a mold plate defining a plurality of vacuum channels and at least one fluid trim channel, wherein the mold plate comprises a first mold area and at least one fluid inlet, and a wall substantially surrounding the first mold area, wherein the at least one fluid trim channel is disposed adjacent to and surrounding the wall, and wherein the at least one fluid trim channel is fluidically connected to the at least one fluid inlet and defines a fluid channel outlet; and
a mold actuation system for adjusting a position of the mold plate relative to the slurry tank;

(b) a part transfer system comprising:
a part transfer feature defining a plurality of part vacuum channels; and
a conveyance mechanism for moving the part transfer feature from a first position in engagement with the forming mold to a second position;

(c) a press station comprising:
a core mold;
a cavity mold compatible with the core mold; and
a press actuation system for adjusting a position of the core mold relative to the cavity mold, wherein at least one of the core mold and the cavity mold defines a plurality of vacuum channels and at least one heating element, and wherein in the second position, the part transfer feature is in engagement with at least one of the core mold and the cavity mold; and

(d) a removal system comprising:
a removal feature defining a plurality of part vacuum channels and a plurality of trim vacuum channels; and
a conveyance mechanism for moving the removal feature from a third position in engagement with at least one of the core mold and the cavity mold to a fourth position.

2. The molded fiber part former of claim 1 , wherein the forming station further comprises:
a sealing ring secured to the mold plate and at least partially covering the at least one fluid trim channel outlet, wherein the sealing ring is spaced apart from the wall so as to at least partially define a fluid slot therebetween.

3. The molded fiber part former of claim 2 , wherein the sealing ring is removably fixed to the mold plate.

4. The molded fiber part former of claim 2 , wherein the at least one fluid trim channel defines a maximum channel width and the fluid slot defines a maximum slot width less than the maximum channel width.

5. The molded fiber part former of claim 2 , wherein the fluid slot is disposed so as to direct a flow of fluid in a direction substantially orthogonal to an uppermost extent of the wall.

6. The molded fiber part production line of claim 1 , wherein the part transfer feature comprises a part transfer mold compatible with the forming mold.

7. The molded fiber part production line of claim 1 , wherein the part transfer system conveyance mechanism comprises a robotic arm.

8. The molded fiber part production line of claim 1 , wherein the part transfer system conveyance mechanism comprises a shuttle disposed on a gantry.

9. The molded fiber part production line of claim 8 , wherein the gantry extends in a first direction away from the forming mold and an opposite, second direction away from the forming mold.

10. The molded fiber part production line of claim 1 , wherein both of the core mold and the cavity mold define the plurality of vacuum channels.

11. The molded fiber part production line of claim 1 , wherein the at least one heating element comprises a plurality of heating elements, and wherein both of the core mold and the cavity mold comprise at least one of the plurality of heating elements.

12. The molded fiber part production line of claim 1 , wherein the removal feature comprises a removal mold.

13. The molded fiber part production line of claim 1 , wherein the removal feature comprises a plurality of vacuum cups.

14. The molded fiber part production line of claim 1 , wherein the removal system conveyance mechanism comprises a robotic arm.

15. The molded fiber part production line of claim 1 , wherein the removal system conveyance mechanism comprises a shuttle disposed on a gantry.

16. The molded fiber part production line of claim 1 , wherein the removal system is the part transfer system.

17. The molded fiber part production line of claim 1 , further comprising a print station, and wherein when in the fourth position, the removal feature is in engagement with the print station.

18. The molded fiber part production line of claim 17 , wherein the print station comprises at least one print device.

19. The molded fiber part production line of claim 18 , wherein the at least one print device comprises at least one of a screen printer, a laser printer, an inkjet printer, and a pad printer.

20. The molded fiber part production line of claim 19 , further comprising a stacking station.

21. The molded fiber part production line of claim 1 , herein at least one of the part transfer system and the removal system comprises at least one of a robotic arm, a shuttle, and a conveyor.

Assignees

• Zume Inc

Inventors

• Gonzalez Pablo
• Leeman Paul

Classifications

• B29C41/50 Primary

  Shaping under special conditions, e.g. vacuum · CPC title

• B29C41/16

  Slip casting, i.e. applying a slip or slurry on a perforated or porous or absorbent surface with the liquid being drained away · CPC title

• B29C41/38

  Moulds, cores or other substrates · CPC title

• B29C43/02

  of articles of definite length, i.e. discrete articles {(B29C35/0227 takes precedence)} · CPC title

• B29K2105/0058

  Liquid or visquous · CPC title