Stretch packaging machine

Patent metadata

Field	Value
Publication number	US-9938028-B2
Application number	US-201514817700-A
Country	US
Kind code	B2
Filing date	Aug 4, 2015
Priority date	Aug 6, 2014
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A stretch packaging machine is provided with a lift mechanism and a tray movement mechanism. The lift mechanism has a plurality of loading members on which a tray is loaded and which lift up the tray toward film such that the tray contacts the film sealing an opening at the top of the tray. The tray movement mechanism is configured to move the tray slidingly over the loading members of the lift mechanism to a predetermined position on the loading members. A frictional coefficient of at least first loading members is such that contact between the tray and the loading members disposed on the near side in the moving direction in which the tray is moved by the tray movement mechanism is smaller than the frictional coefficient of second loading members disposed on the far side in the moving direction.

First claim

What is claimed is:

1. A stretch packaging machine comprising:
a lift mechanism having a plurality of loading members on which a container is loaded, the container having an opening at a top surface thereof, the lift mechanism being configured to lift up the container on the loading members toward a film such that the container can contact the film closing or sealing the opening; and
a container movement mechanism configured to slidingly move the container in a moving direction over the loading members of the lift mechanism to a predetermined position on the loading members,
wherein the loading members include a first group of loading members and a second group of loading members, the first group of loading members being disposed on an upstream side relative to the moving direction and being configured to contact the container, the second group of loading members being disposed on a downstream side relative to the moving direction, a frictional coefficient of the first group of loading members is smaller than a frictional coefficient of the second group of loading members.

2. The stretch packaging machine according to claim 1 , wherein
a length of the container measured in the moving direction is less than a length thereof in a direction orthogonal to the moving direction.

3. The stretch packaging machine according to claim 2 , wherein
the lift mechanism further has a support member for supporting the loading members; and
the loading members are configured so as to be detachable from the support members.

4. The stretch packaging machine according to claim 1 , wherein
the lift mechanism further has a support member for supporting the loading members; and
the loading members are configured so as to be detachable from the support members.

Assignees

• Ishida Seisakusho

Inventors

• Koyama Kazuo

Classifications

• B65B41/04

  by grippers · CPC title

• B65B11/54 Primary

  Wrapping by causing the wrapper to embrace one end and all sides of the contents, and closing the wrapper onto the opposite end by forming regular or irregular pleats · CPC title

• B65B51/16

  by rotary members · CPC title

• B65B35/205

  linked to endless conveyors · CPC title

• B65B61/26

  for marking or coding completed packages · CPC title