EP1817232A1 - Metering device for feeding loose granular substances - Google Patents

Metering device for feeding loose granular substances

Info

Publication number
EP1817232A1
EP1817232A1 EP05755153A EP05755153A EP1817232A1 EP 1817232 A1 EP1817232 A1 EP 1817232A1 EP 05755153 A EP05755153 A EP 05755153A EP 05755153 A EP05755153 A EP 05755153A EP 1817232 A1 EP1817232 A1 EP 1817232A1
Authority
EP
European Patent Office
Prior art keywords
product
vertical packaging
packaging machine
metering device
granular substances
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05755153A
Other languages
German (de)
French (fr)
Other versions
EP1817232B1 (en
Inventor
Gino Rapparini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ICA SpA
Original Assignee
ICA SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ICA SpA filed Critical ICA SpA
Publication of EP1817232A1 publication Critical patent/EP1817232A1/en
Application granted granted Critical
Publication of EP1817232B1 publication Critical patent/EP1817232B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/001—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • B65B39/003—Rotating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles

Definitions

  • the present invention relates to the engineering of vertical packaging machines and specifically refers to metering devices for feeding loose granular substances.
  • metering screw or bucket feeders or checkweighers Different types of metering devices are presently used to predetermine the exact quantity of free-flowing granular products to be introduced into a package: metering screw or bucket feeders or checkweighers.
  • Figure 1 provides a schematic cross-section view of a vertical packaging machine equipped with a metering device for feeding loose granular substances.
  • a metering device for feeding loose granular substances.
  • a circumstance to be highlighted is that figure 1 represents the position that the metering device of the present invention assumes when the diaphragm (5) cuts off the flow of product (1) gravity fed through the shaped channel (2).
  • the bottom of the package to be gravity filled is at the same level as the transverse sealing clamps (12) and the product drop height (h) is reduced to the distance between the clamps and the lower extremity (9) of the product feed channel (1), which corresponds to the end of the forming tube (3).
  • This minimal drop of the loose granular product is a highly welcome feature that optimises the performance of the metering device of the present invention, especially for loose granular products, even if they contain powder.
  • Figure 2 shows the initial phase of the operation whereby the product (1) is introduced and descends freely by gravity through the channel (2).
  • drop height is indicated by the letter (h) and corresponds to the vertical distance between the cut-off diaphragm (5) that slides beneath the lower extremity (9) of the feed channel (2) and the transverse sealing clamps (12).
  • Figure 3 shows the continuation of the product's gravity-induced free fall.
  • Figure 4 illustrates the end of the metering operation. It may be noted that the diaphragm (5) is closed and has cut off the gravity-induced free flow of loose product (1).
  • Figure 5 illustrates the operation whereby the package (6) filled with a predetermined quantity of product is then sealed.
  • Figure 6 schematically illustrates the use of the metering device to introduce a predetermined quantity of loose granular product into a rigid container (6 1 ). It may be noted that the letter (h) indicates that the product drop height is always minimal and is defined precisely by the vertical distance between the bottom of the container (6') and the lower extremity (9) of the feed channel (2) sealed off by the diaphragm (5).
  • Figure 7 provides a more detailed illustration of a vertical cross-section of the diaphragm (5) which cuts off the flow of loose product (1). It may be noted that the upper surface of said revolving diaphragm slides over the lower extremity (9) of the feed channel (2) so as to seal it off. It is also evident that the rotation of the revolving diaphragm (5) is driven by the shaft (7) controlled by a timed motor.
  • Figure 8 shows the diaphragm (5) as seen from below. In the diaphragm (5) one may note the presence of an aperture (8) whose shape matches that of the feed channel (2).
  • the product When this aperture is positioned directly beneath the feed channel (2) the product can flow freely, drawn by natural gravity; when the diaphragm (5) slides closed to seal off the lower extremity (9) of the shaped channel (2) the free flow of product is cut off.
  • the opening time is regulated by the motor (M), which predetermines the exact quantity of product to be introduced into the resulting package (6).
  • the device of the present invention thus functions like a traditional gravity metering device but is inserted inside the forming tube of the vertical packaging machine so that the product is discharged at the end of said forming tube. This arrangement minimises the product drop height to the value indicated by (h) in the previous figure (7).
  • Figure 9 shows a cross-section view of the metering device.
  • a tube (10) for introducing gas and an open zone (11) for venting and circulating air during product discharge operations (1).
  • the shaft (7) is integral with the revolving diaphragm (5) precisely in order to drive the latter and regulate the duration of its opening and closing, which will define the dose of the fed product.
  • each individual item is marked as follows:
  • FIG. 4 schematically represents the structure of a vertical packaging machine.
  • 10 indicates a tube for injecting gas into the package.
  • 11 indicates the air venting and circulation zone inside the forming tube (3).
  • M indicates a timed motor.
  • the invention naturally lends itself to different embodiments as regards both the dimensions and structural proportions, as well as the technological choices in respect of the materials to be used in the manufacture of the various constituent parts and various commercial components.
  • the innovative concept of the present invention is founded upon minimising the drop height (h), which is achieved through a technological contrivance whereby the flow of the loose product is cut off at the bottom of the feed channel (2). Moreover, said cut-off of flow is obtained by means of a revolving diaphragm (5) that slides over the lower terminal surface (9) of the aforesaid feed channel (2) to seal it off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)

Abstract

Metering device for feeding loose granular substances in a vertical packaging machine, characterised in that the granular product (1) is gravity fed through a specially shaped channel (2) inserted inside the forming tube (3) of a vertical packaging machine (4) and its flow is cut off by a revolving diaphragm (5) which determines the quantity of product to be introduced into the resulting package (6).

Description

METERING DEVICE FOR FEEDING LOOSE GRANULAR SUBSTANCES
TECHNICAL FIELD
The present invention relates to the engineering of vertical packaging machines and specifically refers to metering devices for feeding loose granular substances. International reference classification B 65 b.
BACKGROUND ART
Different types of metering devices are presently used to predetermine the exact quantity of free-flowing granular products to be introduced into a package: metering screw or bucket feeders or checkweighers.
All of these types of metering devices share a drawback in that they release the dosed product at the upper end of the forming tube of the vertical packaging machine, thus far from the bottom of the bag to be filled, and this inevitably entails all of the problems caused by the product having to travel through an air-filled forming tube. The solution proposed by the present invention eliminates all of the aforesaid problems.
DESCRIPTION
The invention will now be described in detail referring to the diagrams and appended drawings, intended as non-restrictive examples. Figure 1 provides a schematic cross-section view of a vertical packaging machine equipped with a metering device for feeding loose granular substances. One may expressly note the absence of traditional metering screw or bucket feeders or standard weighers that feed the quantity of product to be packaged. A circumstance to be highlighted is that figure 1 represents the position that the metering device of the present invention assumes when the diaphragm (5) cuts off the flow of product (1) gravity fed through the shaped channel (2).
Also worthy of particular consideration is the fact that the bottom of the package to be gravity filled is at the same level as the transverse sealing clamps (12) and the product drop height (h) is reduced to the distance between the clamps and the lower extremity (9) of the product feed channel (1), which corresponds to the end of the forming tube (3). This minimal drop of the loose granular product is a highly welcome feature that optimises the performance of the metering device of the present invention, especially for loose granular products, even if they contain powder.
Figure 2 shows the initial phase of the operation whereby the product (1) is introduced and descends freely by gravity through the channel (2).
It may be noted that the drop height is indicated by the letter (h) and corresponds to the vertical distance between the cut-off diaphragm (5) that slides beneath the lower extremity (9) of the feed channel (2) and the transverse sealing clamps (12).
It should be noted that the discharge of the loose granular product (1) is induced by gravity but permitted only by the opening of the cut-off diaphragm (5) regulated by the motor (M) which controls the timed rotation of the shaft (7).
Figure 3 shows the continuation of the product's gravity-induced free fall.
Figure 4 illustrates the end of the metering operation. It may be noted that the diaphragm (5) is closed and has cut off the gravity-induced free flow of loose product (1). Figure 5 illustrates the operation whereby the package (6) filled with a predetermined quantity of product is then sealed.
Figure 6 schematically illustrates the use of the metering device to introduce a predetermined quantity of loose granular product into a rigid container (61). It may be noted that the letter (h) indicates that the product drop height is always minimal and is defined precisely by the vertical distance between the bottom of the container (6') and the lower extremity (9) of the feed channel (2) sealed off by the diaphragm (5).
Figure 7 provides a more detailed illustration of a vertical cross-section of the diaphragm (5) which cuts off the flow of loose product (1). It may be noted that the upper surface of said revolving diaphragm slides over the lower extremity (9) of the feed channel (2) so as to seal it off. It is also evident that the rotation of the revolving diaphragm (5) is driven by the shaft (7) controlled by a timed motor. Figure 8 shows the diaphragm (5) as seen from below. In the diaphragm (5) one may note the presence of an aperture (8) whose shape matches that of the feed channel (2). When this aperture is positioned directly beneath the feed channel (2) the product can flow freely, drawn by natural gravity; when the diaphragm (5) slides closed to seal off the lower extremity (9) of the shaped channel (2) the free flow of product is cut off. The opening time is regulated by the motor (M), which predetermines the exact quantity of product to be introduced into the resulting package (6). The device of the present invention thus functions like a traditional gravity metering device but is inserted inside the forming tube of the vertical packaging machine so that the product is discharged at the end of said forming tube. This arrangement minimises the product drop height to the value indicated by (h) in the previous figure (7).
Figure 9 shows a cross-section view of the metering device. One may note the presence of a tube (10) for introducing gas and an open zone (11) for venting and circulating air during product discharge operations (1). It is also possible to note the necessary geometrical congruence between the shape of the aperture (8) and the shape of the feed channel (2). It is moreover evident that the shaft (7) is integral with the revolving diaphragm (5) precisely in order to drive the latter and regulate the duration of its opening and closing, which will define the dose of the fed product. In the figures each individual item is marked as follows:
1 indicates a loose granular product which may also contain powder.
2 indicate a specially shaped feed channel through which the product to be dosed flows down freely.
3 indicates the forming tube of a vertical packaging machine.
4 schematically represents the structure of a vertical packaging machine.
5 indicates a diaphragm for cutting off the flow of fed product.
6 indicates a flexible packaging container. ' indicates a rigid container.
7 indicates the shaft driving the rotation of the cut-off diaphragm (5). . indicates the aperture that allows product to flow through when the diaphragm (5) is open. indicates the bottom surface of the feed channel (2).
10 indicates a tube for injecting gas into the package. 11 indicates the air venting and circulation zone inside the forming tube (3).
12 indicates the clamps for transverse sealing of the packages, h indicates the drop height of the loose granular product.
M indicates a timed motor.
The invention naturally lends itself to different embodiments as regards both the dimensions and structural proportions, as well as the technological choices in respect of the materials to be used in the manufacture of the various constituent parts and various commercial components.
It shall be emphasized that the innovative concept of the present invention is founded upon minimising the drop height (h), which is achieved through a technological contrivance whereby the flow of the loose product is cut off at the bottom of the feed channel (2). Moreover, said cut-off of flow is obtained by means of a revolving diaphragm (5) that slides over the lower terminal surface (9) of the aforesaid feed channel (2) to seal it off.
Thus the scope of protection of this patent shall extend to all metering devices for feeding loose granular substances that display the inventive characteristics of the present invention as substantially described, illustrated and claimed below.

Claims

1) Metering device for feeding loose granular substances in a vertical packaging machine, characterised in that the granular product (1) is gravity fed through a specially shaped channel (2) inserted inside the forming tube (3) of a vertical packaging machine (4) and its flow is cut off by a revolving diaphragm (5) which determines the quantity of product to be introduced into the resulting package (6).
2) Metering device for feeding loose granular substances in a vertical packaging machine as per the previous claim, characterised in that the rotation of the revolving diaphragm (5) is driven by the shaft (7) of an electronically timed motor (M), which controls the opening time of said revolving diaphragm (5) in order to determine and regulate the exact quantity of product gravity fed through the shaped channel (2).
3) METERING DEVICE for feeding loose granular substances in a vertical packaging machine as per the previous claims, characterised in that the revolving diaphragm (5), provided with a duly shaped aperture (8), has the form of a flat disk which slides so that its upper surface will seal off the lower open extremity (9) of the shaped feed channel (2) through which the granular product (1) flows.
4) METERING DEVICE for feeding loose granular substances in a vertical packaging machine as previously claimed, characterised in that said device is provided with suitable ducting (10) for injecting inert gas into the resulting package (6). 5) METERING DEVICE for feeding loose granular substances in a vertical packaging machine as claimed above, characterised in that said device is provided with suitable ducting (11) to enable the venting and circulation of air during the product's descent into the resulting package (6).
6) METERING DEVICE for feeding loose granular substances in a vertical packaging machine as claimed above, characterised in that in the height of the gravity-induced drop (h) of the granular product is minimised by virtue of the fact that the cut-off diaphragm (5) is positioned at the lower open extremity (9) of the feed channel (2) and is thus situated in proximity to the transverse sealing clamps (12) that seal the resulting package (6).
7) METERING DEVICE for feeding loose granular substances in a vertical packaging machine as claimed above, characterised in that said device is applicable both to vertical packaging machines that work with rolls and vertical packaging machines that work with pre-made flexible bags or rigid containers.
EP05755153A 2004-06-29 2005-06-20 Metering device for feeding loose granular substances Not-in-force EP1817232B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20040407 ITBO20040407A1 (en) 2004-06-29 2004-06-29 DEVICE FOR DOSING THE FEEDING OF SLIDING GRANULAR SUBSTANCES
PCT/IB2005/001720 WO2006005996A1 (en) 2004-06-29 2005-06-20 Metering device for feeding loose granular substances

Publications (2)

Publication Number Publication Date
EP1817232A1 true EP1817232A1 (en) 2007-08-15
EP1817232B1 EP1817232B1 (en) 2009-12-02

Family

ID=34972752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05755153A Not-in-force EP1817232B1 (en) 2004-06-29 2005-06-20 Metering device for feeding loose granular substances

Country Status (5)

Country Link
EP (1) EP1817232B1 (en)
DE (1) DE602005018097D1 (en)
ES (1) ES2337909T3 (en)
IT (1) ITBO20040407A1 (en)
WO (1) WO2006005996A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5367634B2 (en) * 2010-04-28 2013-12-11 株式会社イシダ Vertical bag making and packaging machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591303A (en) * 1982-06-14 1984-01-06 ニュ−ロング株式会社 Method and device for bagging and filling powdered body
DE3612197A1 (en) * 1986-04-11 1987-10-22 Bosch Gmbh Robert DEVICE FOR PRODUCING BAG PACKS FILLED WITH LIQUID
JPH03200507A (en) * 1989-12-25 1991-09-02 Meiji Milk Prod Co Ltd Filling packaging method for liquid containing solid material while forming container, and device therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006005996A1 *

Also Published As

Publication number Publication date
ES2337909T3 (en) 2010-04-30
WO2006005996A1 (en) 2006-01-19
EP1817232B1 (en) 2009-12-02
DE602005018097D1 (en) 2010-01-14
ITBO20040407A1 (en) 2004-09-29

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