EP0125771A2 - Verfahren und Vorrichting zum Versiegeln von Schweissnähten an Fahrzeugkarosserien - Google Patents

Verfahren und Vorrichting zum Versiegeln von Schweissnähten an Fahrzeugkarosserien Download PDF

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Publication number
EP0125771A2
EP0125771A2 EP84302241A EP84302241A EP0125771A2 EP 0125771 A2 EP0125771 A2 EP 0125771A2 EP 84302241 A EP84302241 A EP 84302241A EP 84302241 A EP84302241 A EP 84302241A EP 0125771 A2 EP0125771 A2 EP 0125771A2
Authority
EP
European Patent Office
Prior art keywords
sealant
distribution manifold
gun
pump
guns
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Withdrawn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
EP84302241A
Other languages
English (en)
French (fr)
Other versions
EP0125771A3 (de
Inventor
Larry Soutar
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.)
Nordson Corp
Original Assignee
Nordson Corp
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 Nordson Corp filed Critical Nordson Corp
Publication of EP0125771A2 publication Critical patent/EP0125771A2/de
Publication of EP0125771A3 publication Critical patent/EP0125771A3/de
Withdrawn legal-status Critical Current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
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/002—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces with feed system for supplying material from an external source; Supply controls therefor
    • 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
    • B05B9/002—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour incorporating means for heating or cooling, e.g. the material to be sprayed
    • 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
    • B05B9/0406—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 several pumps
    • 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
    • B05B9/0423—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 for supplying liquid or other fluent material to several spraying apparatus

Definitions

  • This invention relates to the sealing of welded seams of automobile bodies wherein finishing requirements dictate that the welded seam be covered with a sealant either before or after the body is primed and painted.
  • welded seam sealer is used to cover and protect very nearly every welded seam or joint of an automobile body. This seam sealer is applied for purposes of excluding water or air, preventing leaking, and combating corrosion.
  • most commercial sealers comprise a vinyl plastisol or epoxy that is pumped via a reciprocating piston pump to a manually operated extrusion gun.
  • the sealant is supplied either from a 55 gallon drum operable to feed a manifold system to which multiple guns are attached, or the sealant material is supplied from a five gallon can operable to supply only a single extrusion gun.
  • the excess material commonly washes off in the phosphate paint priming wash and becomes redeposited on exterior surfaces of the automobile thereby causing paint blemishes in the resulting product.
  • the excess sealant material frequently contaminates the paint primer system.
  • This object is achieved in accordance with the invention by using a metering gear pump in the sealant supply system to each of the extrusion guns of an automobile welded seam sealant applicator system, so as to accurately meter and control the volumetric deposition of sealant material from the gun.
  • the sealant material may be either a hot melt sealant which is solid at room temperature and applied in a molten state or a cold unheated sealant.
  • the metering gear pump in the supply systems to each of the extrusion guns elimintes pressure surges and uneven flow variations from the bead of material applied by the extrusion guns. Thereby, only so much sealant is applied to.a welded seam as is required to adequately cover that seam without the application of excess material.
  • sealer redeposition in the phosphate wash or in the primer paint system is mainly avoided.
  • the system for applying the sealant to the welded seam of an automobile comprises a 55 gallon drum from which sealant material is pumped by a conventional reciprocating piston pump.
  • This reciprocating piston pump supplies the sealant material to an overhead manifold line from which there extends a plurality of drop lines.
  • Each drop line terminates in a manually or a robotic operated extrusion gun.
  • an electric motor driven metering gear pump is connected to each of the drop lines so that sealant is supplied to each of the extrusion guns through a metering pump at a fixed and constant pressure without any pump surges or pressure fluctuations. Thereby, an even and precise amount of sealant is extruded from each gun at a predetermined and accurately controlled rate.
  • all of the welded seams of an automobile body must be covered with a sealant material to exclude water or air and to combat corrosion.
  • This sealant is either applied before or after the welding of the seams and either before or after any primer paint or any preparatory coating treatment of the body.
  • the apparatus generally indicated at 10 comprises a reciprocating piston pump 14 for pumping sealant material 16 from a drum or container 18 to a distribution manifold 20.
  • This manifold generally extends parallel to an automobile production line 13 and is operative to supply pressurized sealant from the pump 14 to a plurality of drop lines 22 through which the sealant is distributed to multiple extrusion guns 24 located along.the production line.
  • the guns 24 are illustrated herein as being of the manual type controlled from a manually operated trigger 26.
  • One suitable gun is disclosed in U.S. Patent No. 4,245,759. The guns could as well though be automatically operable guns controlled and moved relative to the body by robots.
  • Each pump 30 comprises a two-speed DC motor driven gear pump. Since the gear pumps 30 and the motor M for driving the gear pumps are conventional commercially available items, they have not been illustrated or disclosed in detail herein.
  • the reciprocating piston pump 14 is a conventional pneumatic motor driven reciprocating piston pump. It may be either a single acting or a double acting pump, i.e., a pump which pumps on one of two strokes or pumps on both strokes. If the sealant material 16 is a hot melt material then a heated platen 40 will be suspended beneath the pump to heat and melt the hot melt sealant material which is solid at room temperature. One appropriate heated platen is disclosed in U.S. Patent No. 4,227,069. Alternatively, if the sealant is a cold sealant, i.e., liquid at room temperature, then the heated platen will be omitted and the pump 14 inlet simply inserted into the cold sealant 16 contained in the 'drum.
  • a cold sealant i.e., liquid at room temperature
  • the metering pumps 30 are conventional motor driven gear pumps such as the gear pump disclosed in U. S. Patent No. 4,009,974. In one preferred embodiment, this pump is motor driven by a two speed DC electric motor M.
  • the use of a two speed motor has been found to be desirable if that motor is controlled from the trigger 26 of a manually operated gun 24 because it enables the operator of the gun to increase or decrease the rate at which material is dispensed from the gun in accordance with the needs or requirements of the application. Specifically, it has been found that when applying sealant with a manual gun to a straight welded seam, high speed application may be employed, but when applying the sealant to a rounded corner, a slower speed is required in order to effect complete coverage of the seam without application of excessive sealant material. Robot controlled guns may use an even greater number of motor speeds to drive the metering pump 30.
  • the reciprocating pump 14 is actuated when the system is turned on and before the valves of any of the extrusion guns are opened. This results in viscous sealant material being supplied at a pressure substantially above that of the atmosphere from the drum 18 into the distribution manifold 20 and from the distribution manifold 20 through the metering pumps 30 to the extrusion guns 24.
  • the trigger 26 of a gun 24 is actuated so as to open the valve V contained internally of the gun 24
  • the motor M for driving the gear pump 30 is actuated and sealant material is dispensed from the gun at a controlled volumetric rate for so long as the trigger remains open. That rate will remain constant irrespective of any pressure fluctuations which may occur in the distribution manifold 20 because of the presence of the motor driven gear pumps 30.
  • sealant may be obtained by adjusting the trigger 26 of the guns 24 to secure high motor speed.
  • This trigger is preferably connected via a conventional electric control circuit to the motor M of the gear pump 30 so that by controlling the trigger, the actuation and speed of the motor M is controlled.
  • the control circuit which connects the trigger 26 of each of the guns 24 to the associated motor M of the metering pump 30 through which a sealant is supplied to the gun 24 is a conventional electrical control circuit which could readily be supplied by a person skilled in this art. Accordingly, it has only been diagrammatically illustrated and represented by the dashed line 42 and the box labeled CC.
  • the sealant may be dispensed from a conventional robot controlled automatic gun.
  • the control circuit CC would be a part of a programmed control for the automatic gun, the robot, and the motor M for driving the metering pump 30 or a clutch operable between the motor M and the metering pump 30 for controlling actuation of the metering pump 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)
  • Spray Control Apparatus (AREA)
EP84302241A 1983-05-11 1984-04-02 Verfahren und Vorrichting zum Versiegeln von Schweissnähten an Fahrzeugkarosserien Withdrawn EP0125771A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49366083A 1983-05-11 1983-05-11
US493660 1995-06-22

Publications (2)

Publication Number Publication Date
EP0125771A2 true EP0125771A2 (de) 1984-11-21
EP0125771A3 EP0125771A3 (de) 1985-10-09

Family

ID=23961186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84302241A Withdrawn EP0125771A3 (de) 1983-05-11 1984-04-02 Verfahren und Vorrichting zum Versiegeln von Schweissnähten an Fahrzeugkarosserien

Country Status (4)

Country Link
EP (1) EP0125771A3 (de)
JP (1) JPS6041568A (de)
CA (1) CA1214363A (de)
ES (1) ES8504521A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182747A2 (de) * 1984-11-16 1986-05-28 Ciba-Geigy Ag Applikationsvorrichtung für eine zähflüssige oder pastöse Masse
EP0192166A2 (de) * 1985-02-22 1986-08-27 Josef Schucker Verfahren zur Regelung oder Steuerung des Flusses einer zähen Flüssigkeit, die von einer Maschine selbstätig als Naht aufgetragen wird
EP0197218A2 (de) * 1985-04-08 1986-10-15 Nordson Corporation Verfahren und Einrichtung zum Abdichten einer Schweissnaht in Autos
FR2599803A1 (fr) * 1986-06-10 1987-12-11 Prodyrem Procede de depot d'un joint en matiere pompable et dispositif pour sa mise en oeuvre
EP0347269A1 (de) * 1988-06-17 1989-12-20 Saint-Gobain Vitrage International Fertigung eines Stranges aus organischem Material, bestimmt für die Anwendung als Dichtung und als Abstandshalter in der Mehrfachverglasung
US5403515A (en) * 1992-08-25 1995-04-04 Lever Brothers Company, Division Of Conopco, Inc. Liquid cleaning compositions comprising primary alkyl sulphate and non-ionic surfactants
WO1995033574A1 (en) * 1994-06-07 1995-12-14 Nordson Corporation Spray pressure control and method of operating for can coating system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692214A (en) * 1970-05-12 1972-09-19 Atlas Copco Ab Method and means for controlling the delivery of liquid to spray guns
US3720373A (en) * 1971-08-30 1973-03-13 G Levey Recirculating paint system or the like
US4227069A (en) * 1978-04-20 1980-10-07 Nordson Corporation Hot melt dispenser
US4245759A (en) * 1979-05-02 1981-01-20 Nordson Corporation Adhesive hand gun with swivel connector and safety mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692214A (en) * 1970-05-12 1972-09-19 Atlas Copco Ab Method and means for controlling the delivery of liquid to spray guns
US3720373A (en) * 1971-08-30 1973-03-13 G Levey Recirculating paint system or the like
US4227069A (en) * 1978-04-20 1980-10-07 Nordson Corporation Hot melt dispenser
US4245759A (en) * 1979-05-02 1981-01-20 Nordson Corporation Adhesive hand gun with swivel connector and safety mechanism

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182747A2 (de) * 1984-11-16 1986-05-28 Ciba-Geigy Ag Applikationsvorrichtung für eine zähflüssige oder pastöse Masse
EP0182747A3 (en) * 1984-11-16 1987-08-05 Ciba-Geigy Ag Application device for a viscous or pasty mass
EP0192166A2 (de) * 1985-02-22 1986-08-27 Josef Schucker Verfahren zur Regelung oder Steuerung des Flusses einer zähen Flüssigkeit, die von einer Maschine selbstätig als Naht aufgetragen wird
EP0192166A3 (en) * 1985-02-22 1988-04-13 Asea Gmbh Flow regulation or control method for a viscous fluid dispensed as a glue
EP0197218A2 (de) * 1985-04-08 1986-10-15 Nordson Corporation Verfahren und Einrichtung zum Abdichten einer Schweissnaht in Autos
EP0197218A3 (de) * 1985-04-08 1987-10-07 Nordson Corporation Verfahren und Einrichtung zum Abdichten einer Schweissnaht in Autos
FR2599803A1 (fr) * 1986-06-10 1987-12-11 Prodyrem Procede de depot d'un joint en matiere pompable et dispositif pour sa mise en oeuvre
EP0347269A1 (de) * 1988-06-17 1989-12-20 Saint-Gobain Vitrage International Fertigung eines Stranges aus organischem Material, bestimmt für die Anwendung als Dichtung und als Abstandshalter in der Mehrfachverglasung
FR2632891A1 (fr) * 1988-06-17 1989-12-22 Saint Gobain Vitrage Amelioration a la fabrication d'un cordon de matiere organique destine a servir de joint et d'intercalaire dans un vitrage multiple
US5403515A (en) * 1992-08-25 1995-04-04 Lever Brothers Company, Division Of Conopco, Inc. Liquid cleaning compositions comprising primary alkyl sulphate and non-ionic surfactants
WO1995033574A1 (en) * 1994-06-07 1995-12-14 Nordson Corporation Spray pressure control and method of operating for can coating system

Also Published As

Publication number Publication date
EP0125771A3 (de) 1985-10-09
CA1214363A (en) 1986-11-25
JPS6041568A (ja) 1985-03-05
ES532415A0 (es) 1985-04-16
ES8504521A1 (es) 1985-04-16

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Inventor name: SOUTAR, LARRY