Packaging machine for making filter bags with infusion productions

Patent metadata

Field	Value
Publication number	US-12054301-B2
Application number	US-202017642593-A
Country	US
Kind code	B2
Filing date	Sep 30, 2020
Priority date	Sep 30, 2019
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

A packaging machine for making filter bags with infusion products including a plurality of processing stations and a cleaning unit. The processing stations define a processing path and are configured for making infusion products. The cleaning unit is configured for removing dust from the processing path and in turn includes a generator device positioned above the processing path and configured for generating a flow of air designed to push the dust beneath the processing path; at least one ventilation grille coupled to the generator device and designed to convey the flow of air along a predetermined direction of emission which extends around the processing path and at least one suction device positioned the processing path and configured for sucking the dust promoting the evacuation from the machine.

First claim

The invention claimed is:

1. A packaging machine for making filter bags with infusion products, the packaging machine comprising:
a plurality of processing stations defining a processing path and configured for making filter bags; and
a cleaning unit configured for removing dust from the processing path, said cleaning unit comprising:
a generator device positioned above the processing path and configured for generating a flow of air;
a ventilation grille coupled to the generator device and configured for conveying the flow of air towards said plurality of processing stations;
a suction device positioned below the processing stations and configured for sucking the flow of air conveyed by the ventilation grille to suck dust struck by the flow of air along the processing path;

wherein the plurality of processing stations comprises:
an application station in which a succession of doses of an infusion material is deposited on a respective succession of portions of a continuous strip of filter material;
a cutting station in which each portion of the continuous strip is cut and folded around the respective dose of the infusion material;

wherein said ventilation grille is configured to convey the flow of air in a proximity of the continuous strip to an intermediate position between the application station and the cutting station.

2. The packaging machine according to claim 1 , wherein the suction device is positioned facing the generator device and the ventilation grille is configured for conveying the flow of air along a vertical direction of emission.

3. The packaging machine according to claim 1 , wherein the cleaning unit comprises a plurality of generator devices and/or a plurality of ventilation grilles and/or a plurality of suction devices.

4. The packaging machine according to claim 1 , further comprising a containment chamber housing within it said plurality of processing stations, said suction device being positioned on a bottom wall of said containment chamber.

5. The packaging machine according to claim 4 , wherein said plurality of processing stations are positioned on a first vertical wall of said containment chamber, said first vertical wall extending perpendicularly to said bottom wall.

6. The packaging machine according to claim 1 , wherein the ventilation grille comprises a plurality of adjustable fins for modulating a direction of emission of the flow of air.

7. The packaging machine according to claim 6 , further comprising a control unit acting on said adjustable fins for modifying the direction of emission of the flow of air as a function of an input which is entered by an operator.

8. The packaging machine according to claim 1 , wherein the suction device comprises:
a collection chamber configured to promote collection of the dust;
a source of negative pneumatic pressure coupled to the collection chamber and connected with an outside environment for evacuating said dust.

9. The packaging machine according to claim 8 , wherein the collection chamber has a frustoconical shape having a larger base facing the processing path.

10. The packaging machine according to claim 8 , wherein the source of negative pneumatic pressure is outside the packaging_machine and connected to the collection chamber by a duct.

11. The packaging machine according to claim 1 , wherein the generator device is configured for generating a laminar flow of air downwards.

Assignees

• Ima Spa

Inventors

• Conti Roberto

Classifications

• B65B61/06

  by cutting · CPC title

• B08B5/046

  Cleaning moving webs · CPC title

• B08B5/026

  Cleaning moving webs · CPC title

• B65B29/028 Primary

  packaging infusion material into filter bags · CPC title

• B65B55/24 Primary

  Cleaning of, or removing dust from, containers, wrappers, or packaging {; Preventing of fouling} · CPC title