EP0970754A1 - Unité de gommage par pulvérisation - Google Patents

Unité de gommage par pulvérisation Download PDF

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Publication number
EP0970754A1
EP0970754A1 EP99113179A EP99113179A EP0970754A1 EP 0970754 A1 EP0970754 A1 EP 0970754A1 EP 99113179 A EP99113179 A EP 99113179A EP 99113179 A EP99113179 A EP 99113179A EP 0970754 A1 EP0970754 A1 EP 0970754A1
Authority
EP
European Patent Office
Prior art keywords
channels
channel
conduit
valve
gum
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.)
Withdrawn
Application number
EP99113179A
Other languages
German (de)
English (en)
Inventor
Marco Ghini
Mario Spatafora
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.)
GD SpA
Original Assignee
GD 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 GD SpA filed Critical GD SpA
Publication of EP0970754A1 publication Critical patent/EP0970754A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B05B12/06—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for effecting pulsating flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/12—Fluid oscillators or pulse generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
    • B05B1/083—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators the pulsating mechanism comprising movable parts

Definitions

  • the present invention relates to a spray gumming unit.
  • the present invention relates to a spray gumming unit especially suitable for use on a cigarette packing machine - to which the following description refers purely by way of example - for gumming sheets of packing material used on the packing machine.
  • Known cigarette packing machines normally comprise at least one spray gumming unit having one or more gum spray nozzles, each of which is supplied with gum by a respective supply conduit controlled by a valve comprising a valve body movable back and forth in a control direction between an open and a closed position.
  • the valve body may be, for example, a pin movable axially along the conduit, or a shutter movable crosswise to the conduit.
  • the above gumming units are normally used to deposit a succession of gum spots on blanks fed continuously past the nozzles. And to deposit each gum spot, the respective nozzle must be opened for a very short length of time, and the respective valve body moved fairly rapidly back and forth in said control direction between the open and closed position.
  • valves of the above type fail to meet the extremely high operating speeds demanded on modern cigarette packing machines (capable of producing over 600 packets a minute) on account of the valve body, when depositing each gum spot, moving back and forth along the same path (in a first direction from the closed to the open position, and in the opposite direction from the open to the closed position). Which back and forth movement cannot be achieved rapidly on account of the mechanical inertia involved.
  • a spray gumming unit comprising a spray nozzle; a conduit for supplying gum to said spray nozzle; and valve means along said conduit and for controlling the conduit itself; characterized in that said valve means comprise two channels defining an intermediate portion of said conduit; two guides extending crosswise to said channels; two valve bodies, each movable along a respective said guide; and actuating means for moving each said valve body, along the respective said guide, between a first position wherein the valve body cuts off a first of said two channels and leaves a second of said two channels open, and a second position wherein the valve body cuts off said second channel and leaves said first channel open.
  • Number 1 in Figure 1 indicates as a whole a spray gumming unit comprising a spray nozzle 2 connected to a supply device 3 for feeding gum 4 along a conduit 5 controlled by valve device defined by a distributor 6 on conduit 5.
  • Supply device 3 comprises a tank 7 containing gum 4, and from which a pump 8 feeds gum 4 to conduit 5 at a constant pressure regulated by a control unit 9.
  • Distributor 6 comprises two parallel channels 10 and 11 defining an intermediate portion 12 of conduit 5, and through which extend transversely two guide conduits 13 and 14 engaged by respective valve bodies 15 and 16, each of which is moved along respective conduit 13, 14 by an actuating device 17 and in opposition to a respective spring 18.
  • Actuating device 17 comprises two known electromechanical actuators 19 and 20 associated respectively with bodies 15 and 16, and is controlled by control unit 9.
  • Each body 15, 16 is moved by actuating device 17 between a first position wherein body 15, 16 cuts off a first channel 10, 11 and leaves a second channel 11, 10 open, and a second position wherein body 15, 16 cuts off said second channel 11, 10 and leaves said first channel 10, 11 open.
  • Each body 15, 16 comprises an element 21 sliding in fluidtight manner along respective conduit 13, 14, and in which are defined two annular grooves 22 separated by a distance other (in particular, as shown in the Figure 1 embodiment, smaller) than the distance between channels 10 and 11.
  • a first of the two grooves 22 communicates with a first channel 10, 11, and a second channel 11, 10 is cut off by element 21; and in said second position, a second of the two grooves 22 communicates with said second channel 11, 10, and said first channel 10, 11 is cut off by element 21.
  • distributor 6 may assume an enabling position (as shown for example in Figures 1 and 2b) in which bodies 15 and 16 are so positioned as to leave channel 10 or 11 open; or a disabling position (as shown for example in Figures 2a and 2c) in which bodies 15 and 16 are so positioned as to each close a respective channel 10, 11 and so prevent supply of gum 4 from supply device 3 to nozzle 2, which is thus deactivated.
  • a nonreturn valve 24 is provided along each channel 10, 11, close to nozzle 2.
  • nozzle 2 To deposit a gum spot on a blank 23 fed continuously past nozzle 2, nozzle 2 must be activated, i.e. connected hydraulically to supply device 3, for a very short length of time.
  • Distributor 6 is normally set to said disabling position - as shown for example in Figure 2a - in which valve body 15 is in said first position cutting off channel 10 and leaving channel 11 open, and valve body 16 is in said second position cutting off channel 11 and leaving channel 10 open. That is, with bodies 15 and 16 positioned as described above, both channels 10 and 11 are closed.
  • control unit 9 commands actuating device 17 to move body 16 from said second position to said first position, in which both bodies 15, 16 leave channel 11 open ( Figure 2b) and close channel 10, thus enabling gum 4 to flow along channel 11 to nozzle 2.
  • Supply of gum 4 to nozzle 2 is cut off, not by moving body 16 back to its original position cutting off channel 11, but by moving body 15 from its original position cutting off channel 10, i.e. from the first position to the second position cutting off channel 11.
  • Supply of gum 4 to nozzle 2 is therefore cut off by body 16 being maintained ( Figure 2c) in the first position cutting off channel 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Materials For Medical Uses (AREA)
  • Confectionery (AREA)
EP99113179A 1998-07-08 1999-07-07 Unité de gommage par pulvérisation Withdrawn EP0970754A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO980420 1998-07-08
IT98BO000420 IT1306313B1 (it) 1998-07-08 1998-07-08 Unita' di gommatura a spruzzo

Publications (1)

Publication Number Publication Date
EP0970754A1 true EP0970754A1 (fr) 2000-01-12

Family

ID=11343292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99113179A Withdrawn EP0970754A1 (fr) 1998-07-08 1999-07-07 Unité de gommage par pulvérisation

Country Status (2)

Country Link
EP (1) EP0970754A1 (fr)
IT (1) IT1306313B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1479517A1 (fr) * 2003-05-17 2004-11-24 Technotrans AG Arrangement à vannes pour le dispositif de mouillage d'une machine à imprimer
KR20160038292A (ko) * 2014-09-30 2016-04-07 동의대학교 산학협력단 유압식 액체 분사장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420208A (en) * 1966-12-02 1969-01-07 Lockwood Tech Pneumatically controlled applicator system for adhesive and the like
US4177927A (en) * 1977-12-14 1979-12-11 Simmons Thomas R Apparatus for shaping and positioning fluid dispersal patterns
DE2852294A1 (de) * 1978-12-02 1980-07-10 Wabco Fahrzeugbremsen Gmbh Einrichtung zur erzeugung von periodischen druckmittelimpulsen
GB2163528A (en) * 1984-08-22 1986-02-26 Gd Spa Valves

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420208A (en) * 1966-12-02 1969-01-07 Lockwood Tech Pneumatically controlled applicator system for adhesive and the like
US4177927A (en) * 1977-12-14 1979-12-11 Simmons Thomas R Apparatus for shaping and positioning fluid dispersal patterns
DE2852294A1 (de) * 1978-12-02 1980-07-10 Wabco Fahrzeugbremsen Gmbh Einrichtung zur erzeugung von periodischen druckmittelimpulsen
GB2163528A (en) * 1984-08-22 1986-02-26 Gd Spa Valves

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1479517A1 (fr) * 2003-05-17 2004-11-24 Technotrans AG Arrangement à vannes pour le dispositif de mouillage d'une machine à imprimer
DE10322320B4 (de) * 2003-05-17 2007-03-15 Technotrans Ag Ventilanordnung für Sprühfeuchtwerke von Druckmaschinen
KR20160038292A (ko) * 2014-09-30 2016-04-07 동의대학교 산학협력단 유압식 액체 분사장치
KR101639124B1 (ko) 2014-09-30 2016-07-22 동의대학교 산학협력단 유압식 액체 분사장치

Also Published As

Publication number Publication date
IT1306313B1 (it) 2001-06-04
ITBO980420A1 (it) 2000-01-08

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