EP0423041A1 - Verfahren und Vorrichtung zum Sprühauftragen eines Produktes mittels orientierbarer Pistolen, sowie Sprühkabine zur Benutzung dieser Vorrichtung - Google Patents

Verfahren und Vorrichtung zum Sprühauftragen eines Produktes mittels orientierbarer Pistolen, sowie Sprühkabine zur Benutzung dieser Vorrichtung Download PDF

Info

Publication number: EP0423041A1
Authority: EP; European Patent Office
Prior art keywords: gun; conveyor; angle; support shaft; orientation
Prior art date: 1989-10-13
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

EP90402873A

Other languages

English (en)

French (fr)

Other versions

EP0423041B1 (de

Inventor

Christian Le Conte De Poly

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.)

Cattinair

Original Assignee

Cattinair

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.)

1989-10-13

Filing date

1990-10-15

Publication date

1991-04-17

1990-10-15 Application filed by Cattinair filed Critical Cattinair

1990-10-15 Priority to AT90402873T priority Critical patent/ATE100357T1/de

1991-04-17 Publication of EP0423041A1 publication Critical patent/EP0423041A1/de

1994-01-19 Application granted granted Critical

1994-01-19 Publication of EP0423041B1 publication Critical patent/EP0423041B1/de

2010-10-15 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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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
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads

Definitions

the present invention relates to a method of applying by spraying a coloring or treatment product to bodies displaced linearly by a flat conveyor, from at least one gun, driven by a movable member along a closed path, and of which the geometric projection on the plane of the conveyor cuts an axis of movement of said conveyor successively upstream and downstream, in opposite directions, each of the guns being inclined simultaneously by a first angle relative to the plane of the conveyor, by a second angle relative to the axis of movement of said conveyor and a third angle relative to the axis of spraying of the gun.
a device comprising at least one gun driven by a movable member, constituted by a drive arm of a rotating carousel, by means of a support shaft on which it is fixed in an orientation given by said angles.
Such a device is an integral part of a spray booth.
the rotating carousel is composed of a plurality of drive arms mounted on a central shaft driven by a variable speed drive. The therefore, it is rotatable and fits into a circle. On the spokes of the circle are arranged the drive arms on which the guns are fixed by means of a support shaft. The guns have a predetermined orientation but fixed relative to each drive arm. However, the relative position of the latter relative to the axis of movement of the conveyor is variable during rotation according to the angle formed by said axis with each of the radial drive arms.
This has the disadvantage of spraying the application product on the body at different successive angles of attack, causing overlapping and crossing zones which are not uniform, favoring some at the expense of others, depending on the position of the body on the carrier.
Cabins of this type are also known, the product application device of which comprises a rotating carousel, the drive arms of which are disposed around the periphery of a belt or chain transmission member driven by a motor, and describing above the conveyor a trajectory cutting perpendicularly the axis of movement of the conveyor, over the entire width of the latter, successively upstream and downstream in opposite directions.
Such a device makes it possible to obtain a relative position of the drive arms from which the guns constant relative to the axis of movement of the conveyor.
the speed of the drive arms is limited due to the accelerations when the direction of movement of the arms changes relative to the axis of the conveyor.
such a device comprises a complicated mechanism and this is expensive to maintain due to the mist produced by the spraying and which is deposited.
the orientation of the guns is also fixed relative to the drive arm, as mentioned above in the rotary device, which excludes any possibility of communicating to the gun a variation of orientation relative to its corresponding training arm, at a given instant, as a function of a particular contour of the body to be colored or treated.
the object of the present invention is to remedy these drawbacks and for this purpose relates to a method of application by spraying a coloring product or a treatment of bodies displaced linearly by a flat conveyor, from at least one gun , driven by a movable member along a closed path, the geometric projection of which on the plane of the conveyor intersects an axis of movement of said conveyor successively upstream and downstream, in opposite directions, each of the guns being inclined simultaneously by a first angle relative to the plane of the conveyor, a second angle relative to the axis of movement of said conveyor and a third angle relative to the axis of spraying of the gun, characterized in that the orientation of the gun is modifiable by variation of at least one of its three angles independently of the corresponding movable member.
another characteristic of the invention relates to a device comprising at least one gun driven by a movable member constituted by a drive arm of a rotating carousel, by means of a shaft support on which it is fixed in an orientation given by said first, second and third angles, characterized in that it comprises means for controlling the orientation of the gun so as to modify at least one of its angles, independently of the drive arm.
the orientation of the gun relative to the drive member can be variable independently of the latter, thus offering any possibility of orientation of the gun relative to the axis of movement of the conveyor, the plane of the conveyor and the spray axis of the gun.
the present invention also relates to the following characteristics, considered in isolation or in all their technically possible combinations:
the device comprises means for controlling the orientation of the pistol sliding on said pistol to modify said first angle.
said means for controlling the orientation of the gun consist of a finger secured to the support shaft and the free end of which is in contact with a fixed track in the form of a ramp and of which the profile, which is variable in a plane perpendicular to that of the conveyor, is capable of acting, by appropriate means, on the gun to modify the first angle.
the means for controlling the orientation of the gun act on the support shaft, by rotary action on itself, to modify the second angle.
the means for controlling the orientation of the gun consist of a follower finger secured to a support shaft whose free end is in contact with a fixed track in the form of a ramp, the profile, variable in the plane of the conveyor, is capable of rotating said support shaft on itself, to modify the second angle, depending on the orientation of the gun.
the follower finger has at its free end, in contact with the fixed track, a rotary roller.
the support shaft is mounted on the drive arm by means of at least one bearing in which it pivots under the influence of the follower finger.
a return system is interposed between the support shaft and the drive arm, in order to resiliently return the follower finger against the fixed track.
the support shaft pivots on two bearings arranged on a base substantially perpendicular to the drive arm and between which bearings is positioned the follower finger integral with said support shaft.
the rotating roundabout is part of a circle, on at least one radius of which is arranged a rotation drive arm of a pistol.
a rotary carousel has the advantage of being simpler in design, but the invention is not limited thereto.
the profile of the fixed track reproduced by the follower finger integral with the pistol support shaft is capable of imparting to said support shaft, a rotation on itself, such as to maintain a constant value of its second angle relative to the axis of movement of the conveyor, during at least a first useful part of its curvilinear trajectory corresponding to the width of the conveyor.
the width of the fixed track measured perpendicular to the axis of the conveyor is greater than the width of the latter, so as to determine two dead zones located laterally on the side and other side of said transporter and in that the profile of the fixed track at the dead zones is such that it modifies the second angle of a pistol so as to give the latter, over a second useful part of its curvilinear trajectory , corresponding to the width of the conveyor, an orientation relative to the axis of movement of the conveyor, which is parallel but opposite in direction to that of this same pistol in said first useful part of its curvilinear trajectory.
rotary carousel can rotate inside and outside the fixed track in the form of a ramp.
the device comprises control means which are associated with at least one gun, these means being able to vary the third angle of said gun.
control means are associated with at least one support shaft to vary its position along a vertical axis and its angle relative to said vertical axis.
control means are associated with at least one gun for varying the grammage as a function of the geometry of the part to be sprayed.
the device comprises control means by automatic control of the gun orientation system, automatically and continuously.
the spray booth 1 designated as a whole is intended for the application of paints, lacquers, varnishes and spray treatment products on profiled flat surfaces and simultaneously on its songs, which we will call here, panels 2.
the panels to be treated are deposited at the entrance to cabin 1 on a flat strip conveyor 3, with linear movement and vehicle butted by it, at a controlled speed.
the conveyor belts are driven by pulleys 4 and are constituted by steel blades cleaned at each turn by a double cleaning device, one not visible at the exit of the cabin and the other 5 at the entrance. .
These devices generally consist of scrapers of brass brushes dipping in a solvent and of felts. In this way, after each passage in cabin 1, the steel blades are perfectly cleaned before returning to the entrance to the cabin.
the product not shown economizer device is used to trigger the spraying only on the solid surfaces of the panels which pass on the conveyor 3. This results in a double advantage; product economy; less material to filter before evacuating the ambient air outside.
the economizer comprises the following essential organs, partially visible, a detection bridge 10 at the entrance to the cabin 1, located on one side of the transporter 3 and struck by a light beam emanating from a source 11 located from the other side of the carrier; an advance speedometer; a rotation speedometer of a rotor of the merry-go-round; an adjustable electronic control unit.
a body or panel 2 to be treated passes over the detection bridge 10.
the latter records the image of the panel.
the image is transmitted to an electronic memory and advances in this memory at the same speed as the panel 2 on the conveyor 3 thanks to the advance speed counter.
Another synchronization device linked to the mechanical drive system of the merry-go-round 8 records the position and the speed of the pistols 12 which are attached to it.
the memory orders them to open and close according to the shape and the information received by the synchronizers.
the pistols 12 are opened and closed by a solenoid valve 13.
the actual spraying device therefore includes the rotary carousel 8 and the spraying apparatus.
the latter is essentially composed of the pistols 12 actuated by solenoid valves 13 controlled by the economizer and adjusted according to parameters such as: spraying air pressure, product pressure, product flow rate, jet width, position of the guns in height and in inclination relative to the surface to be treated.
Each gun projects a jet whose section is generally substantially oval and which has an angle which can vary by ⁇ 90 ° with respect to the spraying axis of the gun.
the rotary carousel 8 is composed of a plurality of movable radial members or drive arm 14, in this case eight in number, driving in rotation one or two guns 12 per arm 14 so vant a closed circular path, by means of the support shaft 15 on which they are fixed.
the geometric projection of the circular path on the plane of the conveyor 3 intersects the axis of movement F thereof, successively upstream and downstream, in opposite directions, each of the guns 12 being inclined simultaneously by a first angle by relative to the plane of the conveyor 3, a second angle relative to the axis of movement F of said conveyor 3 and a third angle relative to the axis of spraying of said gun, these three angles defining the overall orientation of the pistols 12 in rotary movement in the direction R of the armory 8.
the guns 12, with electric current, compressed air and product, are supplied by manifold and rotary joints which will not be described here.
the merry-go-round 8 is driven by a motor variator 16, the speed of rotation of which is adjusted as a function of the speed of advance of the transporter and the width of the jet of the pistols 12.
a suction and filtration device 17 is placed inside the cabin 1, ventilated, vertically.
the air is extracted at the base of the cabin by two ducts (not visible) leading on the top to two filters and a fan.
the filtered air is exhausted outside by a chimney.
Air is introduced into the cabin either through an open top of the cabin or via a filtering ceiling in the case of pressurized cabins.
the air circulates vertically in the direction of spraying of the guns 12.
a curtain of high-flow water 18 forms two screens of water that the sucked air must pass through, leaving a good part of the spray waste therein.
the two water screens are supplied by a high flow pump driven by a motor.
the orientation of the guns 12 can be modified by variation of at least one of its three angles ⁇ 1, ⁇ 2, and ⁇ 3, independently of the movable member or drive arm 14 .
control means 19 for the orientation of the guns 12 act on each of their own support shaft 15 of which they are integral so as to modify the angle ⁇ 2, independently of the drive arms 14.
the control means 19 for the orientation of each gun 12 act on the support shaft 15, by action rotatable on itself in order to modify the second angle ⁇ 2, that is to say the angle of the gun 12 relative to the axis of movement F of the conveyor 3.
the control means 19 for the orientation of the gun 12 are constituted by a follower finger 20, integral with the support shaft 15, and the free end of which is provided with a rotary roller 21 in contact with a fixed track 22 in the form of a ramp inside which rotates the rotary carousel 8 which forms part of a circle.
the ramp 22 may be disposed inside said rotary carousel 8.
the predetermined profile of said ramp 22 is variable in the plane of the conveyor and able to rotate the support arm 15, around its axis in the direction R1, to modify the second angle ⁇ 2 according to the orientation of the gun 12 to be obtained.
the angle ⁇ 2 of the pistol 12 formed with the axis of movement F of the conveyor 3 is constant during a first useful part L1 of the curvilinear trajectory of said pistol above the conveyor 3 on which the panels 2. It is obvious that the angle ⁇ 2 can also be modified at any point of the trajectory, by a modification of a corresponding zone of the ramp 22. In fact, such means allow a total control of the orientation of the pistol, not influenced by the rotation of the armory 8.
the support shaft 15 is mounted on the drive arm 14 by means of two bearings 23 in which it pivots under the influence of the follower finger 20, itself driven in angular variation in function of the profile of the ramp 22.
the two bearings 23 are arranged on a base 24 perpendicular to the drive arm 14 on which it is fixed, bearings 23 between which is positioned said follower finger 20 integral with the support shaft 15.
a return system such as a return spring 29, or any other equivalent device is interposed between the support shaft 15 and the drive arm 14.
the width L2 of the fixed track 22 in the form of a ramp, measured perpendicular to the longitudinal axis XX ′ of the conveyor 3 which merges with an axis of the merry-go-round 8, is greater than the width of said conveyor 3.
eccentric parts 27 , 28 of the ramp 22 are obtained symmetrically with respect to the axis XX ′ and determine, relative to the width of the conveyor 3, two lateral dead zones 25 and 26.
the eccentric parts 27, 28 are such as to modify, on the corresponding path of the gun 12, the second angle ⁇ 2 of the latter. This is so that the gun 12, after having passed through a first useful part L1 of the conveyor 3 downstream, approaches a second useful part L1 ′ of the conveyor 3 upstream, after having undergone a variation in orientation relative to the axis of displacement F of said conveyor, on passing the eccentric part 27.
This variation is such as to obtain a projection of product, parallel but in opposite direction to that obtained by this same gun 12 when it was located symmetrically in the first useful part L1 of its curvilinear trajectory.
the gun 12 After having crossed the second useful part L1 ′ at an angle ⁇ 2 also constant with respect to the axis of movement F, the gun 12 returns to its initial orientation when the concentric part 28 of the ramp 22 passes, for a new rotation cycle ride 8.
the track 22 is in a horizontal plane and the angle ⁇ 1 of the pistols relative to the plane of the conveyor is fixed.
a variation of the angle ⁇ 1 can be obtained by modifying the track 22 so that it has a variable profile with respect to the plane of the conveyor, this profile being determined in an appropriate manner.
a second finger integral with the support shaft 15 and whose free end is also in contact with the fixed track 22 in the form of a ramp.
this track has variations in a plane perpendicular to the plane of the conveyor, that is to say in a substantially vertical plane.
the finger follows the evolution of the track in this substantially vertical plane and transmits it, by appropriate means, to the pistol so as to modify the angle ⁇ 1 accordingly.
the variation of the first and / or second angle (s) is obtained by means of a ramp-shaped track.
This track can of course be replaced by any equivalent means (cams, gears, etc.).
Additional means can be provided for controlling the position of a support shaft along a vertical axis and / or the angle of this support shaft relative to said vertical axis. These means are not shown in the figures.
the quality of the spray is better if the section of the spray jet, at the level of the part, is constant. We can then act on the support shaft to obtain a constant section.
a heavier grammage on a determined surface can be made necessary by the complexity of a particular relief on the part to be covered or by an absorption coefficient of the non-homogeneous product.
a sensor working continuously is placed at the entrance to the spray booth, recording the three-dimensional characteristics of the parts to be covered.
An example of this sensor can be constituted by a laser plane having an incidence of 45 ° (or other) relative to the conveying plane and a matrix camera provided with a filter and observing the profile of intersection with the panels at 90 ° , with respect to the laser plane.

Landscapes

Spray Control Apparatus (AREA)
Application Of Or Painting With Fluid Materials (AREA)
Furnace Housings, Linings, Walls, And Ceilings (AREA)
Chemical And Physical Treatments For Wood And The Like (AREA)

EP90402873A 1989-10-13 1990-10-15 Verfahren und Vorrichtung zum Sprühauftragen eines Produktes mittels orientierbarer Pistolen, sowie Sprühkabine zur Benutzung dieser Vorrichtung Expired - Lifetime EP0423041B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT90402873T ATE100357T1 (de)	1989-10-13	1990-10-15	Verfahren und vorrichtung zum spruehauftragen eines produktes mittels orientierbarer pistolen, sowie spruehkabine zur benutzung dieser vorrichtung.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8913452A FR2653038B1 (fr)	1989-10-13	1989-10-13	Procede et dispositif d'application par pulverisation de produit par pistolets orientables et cabine de pistolage pour la mise en óoeuvre dudit dispositif.
FR8913452		1989-10-13

Publications (2)

Publication Number	Publication Date
EP0423041A1 true EP0423041A1 (de)	1991-04-17
EP0423041B1 EP0423041B1 (de)	1994-01-19

Family

ID=9386401

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90402873A Expired - Lifetime EP0423041B1 (de)	1989-10-13	1990-10-15	Verfahren und Vorrichtung zum Sprühauftragen eines Produktes mittels orientierbarer Pistolen, sowie Sprühkabine zur Benutzung dieser Vorrichtung

Country Status (5)

Country	Link
EP (1)	EP0423041B1 (de)
AT (1)	ATE100357T1 (de)
DE (1)	DE69006160T2 (de)
FR (1)	FR2653038B1 (de)
WO (1)	WO1991005615A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4418288A1 (de) *	1994-05-26	1995-11-30	Gema Volstatic Ag	Elektrostatische Sprühvorrichtung
EP1974831A1 (de) *	2007-03-27	2008-10-01	Jesús Francisco Barberan Latorre	Maschine zur Aufbringung von Produkten mit Hilfe von Spritzpistolen
ES2334534A1 (es) *	2008-02-22	2010-03-11	Jesus Francisco Barberan Latorre	Maquina para pulverizacion cicloidal.
ITVE20110060A1 (it) *	2011-08-24	2013-02-25	Ger Elettronica S R L	Metodo di taratura di un'apparecchiatura a pistole rotanti per spruzzare un liquido nebulizzato su un oggetto laminare in movimento, in particolare su una pelle, ed apparecchiatura per attuare il metodo.
US20240226945A1 (en) *	2023-01-06	2024-07-11	General Electric Company	Machine motion cam track follower

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2345834A (en) *	1941-10-01	1944-04-04	Howard V Schweitzer	Painting machine
US2397482A (en) *	1942-12-24	1946-04-02	A C Lawrence Leather Company	Spraying machine
GB1113959A (en) *	1964-12-08	1968-05-15	Ici Australia Ltd	Method of distributing a liquid onto a sheet

1989
- 1989-10-13 FR FR8913452A patent/FR2653038B1/fr not_active Expired - Fee Related
1990
- 1990-10-15 WO PCT/FR1990/000741 patent/WO1991005615A1/fr not_active Ceased
- 1990-10-15 EP EP90402873A patent/EP0423041B1/de not_active Expired - Lifetime
- 1990-10-15 DE DE69006160T patent/DE69006160T2/de not_active Expired - Fee Related
- 1990-10-15 AT AT90402873T patent/ATE100357T1/de not_active IP Right Cessation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2345834A (en) *	1941-10-01	1944-04-04	Howard V Schweitzer	Painting machine
US2397482A (en) *	1942-12-24	1946-04-02	A C Lawrence Leather Company	Spraying machine
GB1113959A (en) *	1964-12-08	1968-05-15	Ici Australia Ltd	Method of distributing a liquid onto a sheet

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4418288A1 (de) *	1994-05-26	1995-11-30	Gema Volstatic Ag	Elektrostatische Sprühvorrichtung
EP1974831A1 (de) *	2007-03-27	2008-10-01	Jesús Francisco Barberan Latorre	Maschine zur Aufbringung von Produkten mit Hilfe von Spritzpistolen
ES2322927A1 (es) *	2007-03-27	2009-07-01	Jesus Francisco Barberan Latorre	Maquina para aplicacion de productos mediante pistolas de pulverizado.
ES2322927B1 (es) *	2007-03-27	2009-12-23	Jesus Francisco Barberan Latorre	Maquina para aplicacion de productos mediante pistolas de pulverizado.
ES2334534A1 (es) *	2008-02-22	2010-03-11	Jesus Francisco Barberan Latorre	Maquina para pulverizacion cicloidal.
ES2334534B1 (es) *	2008-02-22	2011-03-22	Jesus Francisco Barberan Latorre	Maquina para pulverizacion cicloidal.
ITVE20110060A1 (it) *	2011-08-24	2013-02-25	Ger Elettronica S R L	Metodo di taratura di un'apparecchiatura a pistole rotanti per spruzzare un liquido nebulizzato su un oggetto laminare in movimento, in particolare su una pelle, ed apparecchiatura per attuare il metodo.
US20240226945A1 (en) *	2023-01-06	2024-07-11	General Electric Company	Machine motion cam track follower
US12397312B2 (en) *	2023-01-06	2025-08-26	Ge Infrastructure Technology Llc	Machine motion cam track follower

Also Published As

Publication number	Publication date
DE69006160T2 (de)	1994-08-11
EP0423041B1 (de)	1994-01-19
DE69006160D1 (de)	1994-03-03
FR2653038B1 (fr)	1993-11-05
FR2653038A1 (fr)	1991-04-19
ATE100357T1 (de)	1994-02-15
WO1991005615A1 (fr)	1991-05-02

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FR2545396A1 (de)	1984-11-09
EP0846525A1 (de)	1998-06-10	Verfahren zum Randschleifen von Glasplatten
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EP0384873A1 (de)	1990-08-29	Vorrichtung zum Reinigen von Gebäudefassaden
FR2657275A3 (fr)	1991-07-26	Machine automatique de pulverisation sur des produits manufactures et procede de pulverisation correspondant.
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