EP0970754A1 - Spray gumming unit - Google Patents

Spray gumming unit Download PDF

Info

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Withdrawn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)
French (fr)
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/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B05B12/06Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for effecting pulsating flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/12Fluid oscillators or pulse generators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02Nozzles, 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
    • B05B1/08Nozzles, 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
    • B05B1/083Nozzles, 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)
  • Confectionery (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Materials For Medical Uses (AREA)

Abstract

A spray gumming unit (1) wherein a conduit (5) for supplying gum (4) to a spray nozzle (2) has an intermediate portion (12) defined by two channels (10, 11) extending through a distributor (6) having two valve bodies (15, 16), each of which is movable, crosswise to the two channels (10, 11), between a first position wherein the valve body (15, 16) cuts off a first (10) of the two channels (10, 11) and leaves a second (11) of the two channels (10, 11) open, and a second position wherein the valve body (15, 16) cuts off the second channel (11) and leaves the first channel (10) open.

Description

The present invention relates to a spray gumming unit.
In particular, 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. In various known embodiments, the valve body may be, for example, a pin movable axially along the conduit, or a shutter movable crosswise to the conduit.
On known packing machines, 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.
Though perfectly effective, 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.
It is an object of the present invention to provide a spray gumming unit designed to eliminate the aforementioned drawbacks, and which at the same time is cheap and easy to produce.
According to the present invention, there is provided 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.
A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
  • Figure 1 shows a schematic partial section, with parts removed for clarity and parts in block form, of a preferred embodiment of the gumming unit according to the present invention;
  • Figure 2 shows a detail of Figure 1 in various operating positions.
  • 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.
    As shown in Figure 2, for each body 15, 16 in said open position, 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.
    As shown in Figure 2, 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.
    In the Figure 1 embodiment, a nonreturn valve 24 is provided along each channel 10, 11, close to nozzle 2.
    Operation of unit 1 will now be described with particular reference to Figure 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.
    To deposit a gum spot on blank 23, 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.
    In the course of each gumming cycle, therefore, the time interval between activation and deactivation of nozzle 2 is extremely short, by nozzle 2 being activated and deactivated by two distinct mechanical members (bodies 15 and 16), each of which performs one stroke in one direction, thus considerably reducing the mechanical inertia involved.

    Claims (4)

    1. A spray gumming unit comprising a spray nozzle (2); a conduit (5) for supplying gum (4) to said spray nozzle (2); and valve means (6) along said conduit (5) and for controlling the conduit (5) itself; characterized in that said valve means (6) comprise two channels (10, 11) defining an intermediate portion (12) of said conduit (5); two guides (13, 14) extending crosswise to said channels (10, 11); two valve bodies (15, 16), each movable along a respective said guide (13, 14); and actuating means (17) for moving each said valve body (15, 16), along the respective said guide (13, 14), between a first position wherein the valve body (15, 16) cuts off a first (10) of said two channels (10, 11) and leaves a second (11) of said two channels (10, 11) open, and a second position wherein the valve body (15, 16) cuts off said second channel (11) and leaves said first channel (10) open.
    2. A unit as claimed in Claim 1, characterized in that each said valve body (15, 16) comprises an element (21) sliding in fluidtight manner along the respective said guide (13, 14), and in which are defined two passages (22) separated by a distance other than the distance between the two channels (10, 11).
    3. A unit as claimed in Claim 1 or 2, characterized in that said actuating means (17) are electromechanical actuating means.
    4. A unit as claimed in any one of Claims 1 to 3, characterized by comprising a control unit (9) for commanding said actuating means (17) to move a first (15) of said two valve bodies (15, 16) from said first position to said second position to feed gum (4) to said spray nozzle (2), and to subsequently move a second (16) of said two valve bodies (15, 16) from said second position to said first position to cut off supply of gum (4) to said spray nozzle (2).
    EP99113179A 1998-07-08 1999-07-07 Spray gumming unit Withdrawn EP0970754A1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    ITBO980420 1998-07-08
    IT98BO000420 IT1306313B1 (en) 1998-07-08 1998-07-08 SPRAY RUBBER UNIT

    Publications (1)

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

    Family

    ID=11343292

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99113179A Withdrawn EP0970754A1 (en) 1998-07-08 1999-07-07 Spray gumming unit

    Country Status (2)

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

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1479517A1 (en) * 2003-05-17 2004-11-24 Technotrans AG Valve assembly for the dampening device of a printing machine
    KR20160038292A (en) * 2014-09-30 2016-04-07 동의대학교 산학협력단 Liquid injection apparatus for hydrodynamic

    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 (en) * 1978-12-02 1980-07-10 Wabco Fahrzeugbremsen Gmbh Periodic pressure impulse generation equipment - has two valves each connected by delay device to input of other
    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 (en) * 1978-12-02 1980-07-10 Wabco Fahrzeugbremsen Gmbh Periodic pressure impulse generation equipment - has two valves each connected by delay device to input of other
    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 (en) * 2003-05-17 2004-11-24 Technotrans AG Valve assembly for the dampening device of a printing machine
    DE10322320B4 (en) * 2003-05-17 2007-03-15 Technotrans Ag Valve arrangement for spray dampening of printing machines
    KR20160038292A (en) * 2014-09-30 2016-04-07 동의대학교 산학협력단 Liquid injection apparatus for hydrodynamic
    KR101639124B1 (en) 2014-09-30 2016-07-22 동의대학교 산학협력단 Liquid injection apparatus for hydrodynamic

    Also Published As

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

    Similar Documents

    Publication Publication Date Title
    US6164568A (en) Device for applying free-flowing material to a substrate, in particular for intermittent application of liquid adhesive
    EP2057310B9 (en) Knitting machine, particularly circular knitting machine, with a yarn feeding device
    US4502912A (en) Apparatus for making glue strips on a rapidly moving web
    EP0216199B1 (en) Multi-orifice zero cavity nozzle dispenser
    US6408655B1 (en) Device for selectively feeding threads in knitting machines or the like
    WO1996033052A3 (en) Servo driven watercutter
    US7305808B2 (en) Packaging machine
    EP0970754A1 (en) Spray gumming unit
    DE2118985C3 (en) Control device for double disc grinding machines
    EP1714886B1 (en) Packaging machine
    US5215762A (en) Nozzle for injection molding machine
    US6446415B1 (en) Method of forming groups of cigarettes on a cigarette packing machine
    US4193274A (en) Yarn feed and change mechanisms
    US5518301A (en) Method and device for supplying fibres to a filling tool in a brush manufacturing machine
    EP1260277A2 (en) A glue distribution unit in particular for machines which process wooden panels
    US1174349A (en) Machine-tool.
    US4963126A (en) Method and apparatus for forming carton blanks
    US4137732A (en) Yarn feed and yarn change mechanism
    US20200163357A1 (en) Process for dispensing fluid foodstuff material into a shaping cavity of a mould
    US2350229A (en) Surface grinder and automatic control means therefor
    JP2503170B2 (en) Machine tool spindle cleaning device
    US4095554A (en) Self-wiping, self controlled fluid dispenser apparatus
    KR0172668B1 (en) Blower unit for detaching a metallized web and braking a seet in a platen press
    US5217169A (en) Drool-retarding valving of a multi nozzle adhesive manifold
    DE102005030906A1 (en) Head assembly for automatic high speed adhesive point application, neatly deposits adhesive thread pulled between nozzle and product

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    AKX Designation fees paid
    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

    18D Application deemed to be withdrawn

    Effective date: 20000713

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: 8566