EP0638422A1 - Dispositif de pulvérisation de liquides pour machines d'impression - Google Patents

Dispositif de pulvérisation de liquides pour machines d'impression Download PDF

Info

Publication number
EP0638422A1
EP0638422A1 EP94107096A EP94107096A EP0638422A1 EP 0638422 A1 EP0638422 A1 EP 0638422A1 EP 94107096 A EP94107096 A EP 94107096A EP 94107096 A EP94107096 A EP 94107096A EP 0638422 A1 EP0638422 A1 EP 0638422A1
Authority
EP
European Patent Office
Prior art keywords
pump
valve
piston
pressure
spray device
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
EP94107096A
Other languages
German (de)
English (en)
Other versions
EP0638422B1 (fr
Inventor
Herbert Stanka
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.)
Baldwin Gegenheimer GmbH
Original Assignee
Baldwin Gegenheimer GmbH
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 Baldwin Gegenheimer GmbH filed Critical Baldwin Gegenheimer GmbH
Publication of EP0638422A1 publication Critical patent/EP0638422A1/fr
Application granted granted Critical
Publication of EP0638422B1 publication Critical patent/EP0638422B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0413—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with reciprocating pumps, e.g. membrane pump, piston pump, bellow pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/26—Spraying devices

Definitions

  • the invention relates to a liquid spray device for printing machines according to the preamble of claim 1.
  • Such a liquid spray device for printing presses is known from DE-OS 28 26 135 and serves there as a blanket washing device.
  • Piston pumps draw a certain amount of liquid from a liquid container during a suction stroke and then press it during the pressure stroke into a memory of a nozzle bar, from which the liquid is then expelled by a blast of compressed air through nozzle openings in the nozzle bar and sprayed onto a blanket cylinder of a printing machine to be washed becomes.
  • the liquid spray device according to the invention is suitable for both spraying techniques.
  • the liquid is pressed out of the nozzle openings of the nozzle device by the pressure of the piston pump and is sprayed by the pressure of the piston pump.
  • the liquid spray device according to the invention is suitable for supplying water, liquid detergent, solvent or a mixture thereof or of printing process liquid to any parts in a printing press, such as for example on a blanket cylinder, printing plate cylinder, printing cylinder, on inking unit rollers, dampening unit rollers or on a cleaning cloth Wash these cylinders or rollers or the substrate.
  • a printing press such as for example on a blanket cylinder, printing plate cylinder, printing cylinder, on inking unit rollers, dampening unit rollers or on a cleaning cloth Wash these cylinders or rollers or the substrate.
  • the basic structure of a printing press is known for example from DE-OS 40 13 465 A1.
  • the object of the invention is to solve the problem of dripping and deforming the spray jet into a solid liquid jet which is self-contained, and to avoid moisture stains and liquid streaks thereby generated on an object sprayed with the liquid at the end of a pressure stroke of the piston pump.
  • the liquid spray device for printing presses shown in the drawings contains a piston pump 2; a liquid container 4 with liquid 6; a nozzle device 8; a suction line 12 fluidly connecting the liquid container 4 with a suction inlet 10 of the piston pump 2; a pump inlet valve 14 arranged in the flow path of the suction line 12 in the form of a check valve opening in the flow direction towards the piston pump 2 with a compression spring 16 urging the valve in the opposite flow direction in the closed position; a pressure line 20 fluidly connecting a pressure outlet 18 of the piston pump 2 to the nozzle device 8; a arranged in the flow path of the pressure line 20 pump outlet valve 22, which opens in the flow direction from the piston pump 2 to the nozzle device 8 and is pushed in the opposite closing direction by a compression spring 24 in the closed position.
  • the pump inlet valve 14 can be arranged according to the drawings in the suction line 12 or on the pump housing 26.
  • the pump outlet valve 22 can be arranged in the pressure line 20 or on the pump housing 26.
  • the pump inlet valve 14 and the pump outlet valve 22 can be integrated in the housing 26 or in a housing cover, as is known from DE-OS 41 36 265 A1.
  • the nozzle device 8 contains a check valve 28 opening in the pressure direction of the piston pump 2 with a spring 30 urging the check valve 28 in the opposite direction into the closed position and at least one nozzle opening 32, which extends over the length of a printing press cylinder 34 to be moistened with the liquid, or a large number of nozzle openings 32, which are arranged distributed over the length of the printing press cylinder 34 to be moistened.
  • the pump outlet valve 22 is connected upstream of an additional valve 36, 40, which closes suddenly when the pump piston 38 reaches its pressure stroke end position during the pressure stroke, which is shown in FIG. 1 is shown, and which opens suddenly when the pump piston 38 starts a suction stroke movement from this pressure stroke end position.
  • the additional valve 36, 40 consists of a valve seat 36 which surrounds the pressure outlet 18 in a ring in the pump housing 26 and an end face 40 of the pump piston 38 opposite it as a valve disk which closes the valve seat 36 at the end of the pressure stroke of the pump piston 38.
  • the pressure outlet 18 and the suction inlet 10 are located side by side in the same end wall 42 of the pump housing 26. They could also be arranged differently.
  • the valve seat 36 forms a stop against which the pump piston 38 bears at the end of its pressure stroke path and which thereby limits the pressure stroke path.
  • a control device 44 which can be a microprocessor-controlled electronic control device, controls the pump piston 38 in such a way that when it reaches the valve seat 36 at the end of a pressure stroke it is suddenly moved away from the valve seat 36 in the opposite direction of the suction stroke. Furthermore, the control stroke 44 can be used to set or meter the suction stroke distance of the pump piston 38 and thus the amount of liquid which the pump piston 38 sprays onto the cylinder 34 via its nozzle openings 32 during a subsequent pressure stroke through the nozzle device 8. In order to the amount of liquid delivered during a delivery stroke is identical to the amount of liquid sprayed through the nozzle openings 32, it is of course necessary that the pressure line 20 has been filled with liquid by one or more previous delivery strokes of the pump piston 38.
  • FIG. 1 shows the liquid spray device when the pump piston 38 performs a suction stroke movement in the direction of an arrow 46.
  • the pump outlet valve 22 and the check valve 28 of the nozzle device 8 are relieved and closed both by the suction effect of the pump piston 38 and by their compression springs 24 and 30.
  • the suction force of the pump piston 38 outweighs the closing force of the spring 16 of the pump inlet valve 14, so that the pump inlet valve 14 is opened and liquid 6 is sucked out of the liquid container 4 through the suction line 12 into the pump housing 26.
  • the piston movement is reversed and the pump piston 38 carries out a pressure stroke in accordance with an arrow 48 until it bears against the valve seat 36 of the additional valve formed in the pump housing 26 and against it closes, as shown in FIG. 2.
  • the previously sucked-in liquid is sprayed by the nozzle device 8 in the form of a spray jet 50 onto the printing press cylinder 34. Due to the pressure stroke movement of the pump piston 38, the pump inlet valve 14 closed and the pump outlet valve 22 and the check valve 28 of the nozzle device 8 are opened against the force of their springs 24 and 30.
  • valve body 52 of the pump outlet valve 22 is provided with a valve tappet 54, which extends through the valve seat 36 formed in the pump housing 26 a distance 56 beyond this valve seat 36 into the pump housing 26 in the direction of the pump piston 38 when the valve body 52 of the Pump outlet valve 22 is in the closed position shown in Figures 1 and 3.
  • the plunger distance 56 projecting beyond the valve seat 36 can be the same size, smaller or larger than the distance by which the valve body 52 is moved in the opening direction by the liquid pressure generated by the pump piston 38 during the pressure stroke movement.
  • the pressure line 20 expands slightly due to the elasticity of its material. This expansion decreases and the line volume shrinks accordingly when the liquid pressure drops at the end of the pressure stroke because of the liquid escaping from the nozzle openings 32. This can result in dripping of liquid at the nozzle openings 32 if no special countermeasures are taken. In the present case, there are the countermeasures in the valve tappet 54 and in the additional valve with the valve seat 36, which each prevent such dripping.
  • the valve seat 36 at the upstream beginning of the pressure outlet 18 with respect to the pressure stroke means that, when the pressure stroke end has been reached, the pump piston 38 can suddenly no longer exert pressure on the liquid in the pressure line 20.
  • the pump piston 38 As soon as the pump piston 38 has reached the end of the pressure stroke shown in FIG. 2, it is suddenly and quickly moved again by the control device 44 away from the valve seat 36 in the suction stroke direction 46, so that a pressure relief quickly sets in in the pressure line 20 and in the nozzle device 8 and Liquid from the pressure line 20 and the nozzle device 8 is sucked back into the pump housing 26 through the pump outlet valve 22 which is kept open by means of the tappet 54.
  • valve tappet 54 is provided, which upon a closing movement of the valve body 52 of the pump outlet valve 22 is applied to the pump piston 38 and prevents the pump outlet valve 22 from closing completely until the pump piston 38 has covered the suction stroke start section 56 according to FIG. 3, which is equal to the distance 56 by which the valve tappet 34 moves with the outlet valve 22 closed the valve seat 36 of the additional valve protrudes into the pump housing 26.
  • the pressure line 20 has sufficient time during this suction stroke start section 56 to reduce the liquid pressure and liquid in its quantity and speed back into the pump housing 26 in such a way that drip-free is ensured at the nozzle openings 32.
  • the closing force of the spring 16 of the pump inlet valve 14 is set to a closing force threshold value such that the vacuum generated by the pump piston 38 during the initial suction stroke section 56 is not sufficient to open the pump inlet valve 14.
  • This closing pressure threshold value of the inlet valve 14 can be in the range between 0.3 and 1 bar. It is preferably 0.6 bar.
  • valve seat 36 of the additional valve projects into the housing interior via the pump housing 26.
  • the suction inlet 10 remains open to the interior of the housing even when the pump piston 38 bears on the valve seat 36 of the additional valve, as shown in FIG. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Nozzles (AREA)
  • Rotary Presses (AREA)
EP94107096A 1993-08-10 1994-05-06 Dispositif de pulvérisation de liquides pour machines d'impression Expired - Lifetime EP0638422B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9311935U DE9311935U1 (de) 1993-08-10 1993-08-10 Flüssigkeits-Sprühvorrichtung für Druckmaschinen
DE9311935U 1993-08-10

Publications (2)

Publication Number Publication Date
EP0638422A1 true EP0638422A1 (fr) 1995-02-15
EP0638422B1 EP0638422B1 (fr) 1996-11-13

Family

ID=6896609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94107096A Expired - Lifetime EP0638422B1 (fr) 1993-08-10 1994-05-06 Dispositif de pulvérisation de liquides pour machines d'impression

Country Status (2)

Country Link
EP (1) EP0638422B1 (fr)
DE (2) DE9311935U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297713A (en) * 1995-02-07 1996-08-14 Heidelberger Druckmasch Ag Washing device for a printing unit of a printing machine
DE19519432A1 (de) * 1995-05-26 1996-11-28 Flach Karl Heinz Verfahren und Vorrichtung zum Verspruehen einer Fluessigkeit
DE19938414B4 (de) * 1999-08-13 2004-12-02 Koenig & Bauer Ag Einrichtung zum Aufbringen von einem Reinigungsmedium
CN111299006A (zh) * 2020-03-13 2020-06-19 深圳市奥科立自动化有限公司 雾化系统的雾化方法及雾化系统
CN112248637A (zh) * 2020-09-23 2021-01-22 马鞍山虹润彩印有限责任公司 一种食品包装印刷用油墨自动添加装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508711A (en) * 1967-12-29 1970-04-28 Ryco Graphic Mfg Fluid dispensing system
US4050378A (en) * 1974-10-17 1977-09-27 Smith R.P.M. Corporation Metered spray dampening system
US4230160A (en) * 1978-12-11 1980-10-28 National Instrument Company, Inc. Adjustable suck-back device for sanitary pumps
WO1991001222A1 (fr) * 1989-07-25 1991-02-07 Precision Engineered Systems Inc. Systeme de lavage de blanchet a circulation de pression sous-ambiante
US4991747A (en) * 1988-10-11 1991-02-12 Risdon Corporation Sealing pump
EP0484192A1 (fr) * 1990-10-30 1992-05-06 Alliedsignal Europe Services Techniques Pompe hydraulique
US5192006A (en) * 1991-05-01 1993-03-09 Risdon Corporation Low profile pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508711A (en) * 1967-12-29 1970-04-28 Ryco Graphic Mfg Fluid dispensing system
US4050378A (en) * 1974-10-17 1977-09-27 Smith R.P.M. Corporation Metered spray dampening system
US4230160A (en) * 1978-12-11 1980-10-28 National Instrument Company, Inc. Adjustable suck-back device for sanitary pumps
US4991747A (en) * 1988-10-11 1991-02-12 Risdon Corporation Sealing pump
WO1991001222A1 (fr) * 1989-07-25 1991-02-07 Precision Engineered Systems Inc. Systeme de lavage de blanchet a circulation de pression sous-ambiante
EP0484192A1 (fr) * 1990-10-30 1992-05-06 Alliedsignal Europe Services Techniques Pompe hydraulique
US5192006A (en) * 1991-05-01 1993-03-09 Risdon Corporation Low profile pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297713A (en) * 1995-02-07 1996-08-14 Heidelberger Druckmasch Ag Washing device for a printing unit of a printing machine
GB2297713B (en) * 1995-02-07 1997-12-03 Heidelberger Druckmasch Ag Washing device for a printing unit of a printing machine
DE19519432A1 (de) * 1995-05-26 1996-11-28 Flach Karl Heinz Verfahren und Vorrichtung zum Verspruehen einer Fluessigkeit
DE19519432C2 (de) * 1995-05-26 1999-06-24 Flach Karl Heinz Verfahren und Vorrichtung zum Versprühen einer Flüssigkeit
DE19938414B4 (de) * 1999-08-13 2004-12-02 Koenig & Bauer Ag Einrichtung zum Aufbringen von einem Reinigungsmedium
CN111299006A (zh) * 2020-03-13 2020-06-19 深圳市奥科立自动化有限公司 雾化系统的雾化方法及雾化系统
CN112248637A (zh) * 2020-09-23 2021-01-22 马鞍山虹润彩印有限责任公司 一种食品包装印刷用油墨自动添加装置

Also Published As

Publication number Publication date
DE9311935U1 (de) 1993-10-21
DE59401032D1 (de) 1996-12-19
EP0638422B1 (fr) 1996-11-13

Similar Documents

Publication Publication Date Title
DE1628144C3 (de) Saugdrosselsteuereinrichtung
DE2936552C2 (de) Luftsteuervorrichtung fuer presslufttrockner
EP0216043B1 (fr) Dispositif pour distribuer des matériaux liquides ou pâteux
DE2608842C2 (fr)
EP0570727B1 (fr) Dispositif de lavage pour machines à imprimer
DE69624642T2 (de) Pumpenmechanismus
EP0638422B1 (fr) Dispositif de pulvérisation de liquides pour machines d'impression
AT397609B (de) Dispenser für waschmittel für eine geschirrspülmaschine
EP0570763B1 (fr) Dispositif de lavage pour machine à imprimer
EP0627268B1 (fr) Dispositif de pulvérisation de liquide, en particulier pour les machines à imprimer
DE69102047T2 (de) Flüssigkeitspumpe.
DE2238327C3 (de) Vorrichtung zum Spritzen bzw. Sprühen von Flüssigkeiten
DE102004024471B3 (de) Pumpe zur Entnahme von Flüssigkeit oder pastöser Masse, entsprechender Spendeapparat und entsprechendes Verfahren
DE9308392U1 (de) Flüssigkeits-Sprühvorrichtung, insbesondere für Druckmaschinen
DE2462828C3 (de) Handbetätigter Kleinzerstäuber
CH616235A5 (en) Device for testing fuel injection valves.
DE3026872A1 (de) Fluessigkraftstoffeinspritzpumpvorrichtung
CH616382A5 (en) Nebulising device for liquids
DE60120626T2 (de) Espressomaschine mit einem abwassersystem für das heizelement
DE2118562C3 (de) Vorrichtung zur selbsttätigen Kontrolle des Flusses einer Flüssigkeit
DE942066C (de) Kolbenpumpe
DE2938220A1 (de) Vorzugsweise mit druckluft betriebene vorrichtung zum kontinuierlichen abgeben einer substanz, insbesondere eines zaehfluessigen oder pastenartigen materials aus einem behaelter
DE2514022C3 (de) Vorrichtung zum Schmieren der Gelenkverbindungen von endlosen Förderketten
DE3227616A1 (de) Verfahren und anordnung zum abfuellen eines verformbaren und fliessfaehigen fuellgutvorrats
DE19616762C2 (de) Dampfbügeleisen

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

17P Request for examination filed

Effective date: 19940507

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT SE

17Q First examination report despatched

Effective date: 19950508

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19961113

REF Corresponds to:

Ref document number: 59401032

Country of ref document: DE

Date of ref document: 19961219

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030414

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030520

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030523

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040506

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040507

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040506

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20130522

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20130524

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59401032

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20140507