US 5,475,965 AGranted

Machine for sealing containers by applying a covering film

AssigneeG. Mondini S.p.A.

InventorGiovanni Mondini

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Abstract

The present invention relates to a machine for sealing containers by applying a covering film, which comprises a framework for supporting a container sealing unit which is located between a unit for feeding the containers to be sealed and a conveyor for removing the sealed containers. There are also pusher arms which are detachably associable with multiple containers to transfer them from the feeder unit to the sealing unit and from the sealing unit to the removal conveyor. The particularity of the invention resides in the fact that the feeder unit comprises an accumulation conveyor which is located upstream of the sealing unit and downstream of at least one buffer conveyor which is interposed between the accumulation conveyor and an external feeder conveyor. There are also detectors for measuring the distance and speed of the containers fed onto the buffer conveyor; these detectors drive the motors that actuate the buffer conveyor in order to feed the containers at a preset speed and in a preset position onto the accumulation conveyor.

Claims10

Dependent claims

Machine for sealing containers by applying a covering film, comprising:

a framework;
a container sealing unit supported on said framework;
a feeding unit for feeding the containers to be sealed;
a removal conveyor for removing sealed containers, said sealing unit being located between said feeding unit and said removal conveyor;
pusher arms for transferring said containers from said feeding unit to said sealing unit and from said sealing unit to said removal conveyor, said arms being detachably associable with a plurality of containers,
wherein said feeding unit comprises:
an accumulation conveyor, said accumulation conveyor being located upstream of said sealing unit;
at least one buffer conveyor, said buffer conveyor being located ahead of said accumulation conveyor, and interposed between the accumulation conveyor and an external feeder conveyor;
measuring means for measuring a distance and speed of containers fed onto said at least one buffer conveyor;
and motor means for actuating said buffer conveyor to feed the containers at a preset speed and in a preset position onto said accumulation conveyor, said motor means being controlled by said measuring means.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/426,761Filed 21 Apr 1995
Priority: IT MI94A09016 May 1994
Granted: 19 Dec 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification33 codes

B65G 47/082
Spacing or grouping the articles during feeding: grouping articles in rows
B29C 65/02
Joining or sealing of preformed parts , e.g. welding of plastics materials; Apparatus therefor: by heating, with or without pressure
B29C 65/7451
Using a single unit having both a severing tool and a welding tool: the severing tool and the welding tool being movable with respect to one-another
B29C 65/7461
Using a single unit having both a severing tool and a welding tool: for making welds and cuts of other than simple rectilinear form