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
  • B05B13/0278—Arrangement or mounting of spray heads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
• • 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
  • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
  • B05B13/0264—Overhead conveying means, i.e. the object or other work being suspended from the conveying means; Details thereof, e.g. hanging hooks
• • 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
  • B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
  • B05B13/0457—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles specially designed for applying liquid or other fluent material to three-dimensional [3D] surfaces of the work, e.g. by using several moving spray heads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
  • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
  • B05B15/68—Arrangements for adjusting the position of spray heads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B16/00—Spray booths
  • B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
• • 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
  • B05B13/0405—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 reciprocating or oscillating spray heads
  • B05B13/041—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 reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
  • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
  • B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material

Definitions

• the present invention relates to automatic powder application systems and more particularly to a device comprising powder sprayers intended for applying powder to complex parts.
• Reinforcement can be carried out manually, which implies a high cost, the need to employ very specialized personnel, and a repeatability of the results not guaranteed.
• Reinforcement can be achieved by placing, on a fixed vertical ramp at the inlet or outlet of the application booth, a series of automatic guns specialized in the application of powder to specific specific areas of each of the parts to be powdered. This method requires manual positioning in height and depth of each of the guns for each different type of part and therefore requires production stoppages for adjustment and work by series of identical parts.
• Reinforcement can also be achieved by placing side by side against the cabin a series of 2-axis robots, having a positioning axis in height and positioning axis in depth, each of these robots being provided with an automatic application gun.
• This solution requires the placement of several robots of this type, their number being able to reach 8 or -10, which-leads to an elongation of the cabins, at a high cost and to an unacceptable footprint.
• Reinforcement can also be achieved by placing a 6-axis robot at the entrance or exit of the cabin capable of substantially reproducing the movements of the painter.
• this type of robot occupies a large floor and cabin wall surface and their complexity of implementation, maintenance and upkeep as well as their cost correspond poorly to the possibilities of a large majority of companies.
• 6-axis robots require large openings in the walls of the cabins, which induces a large increase in the air flow rates sucked by these cabins placed under vacuum to avoid the dispersion of powder outside said cabins.
• a reinforcement device must also make it possible to easily enter and exit the application guns to clean them at each change of powder shade.
• the present invention overcomes the drawbacks of the solutions mentioned above by providing high operating flexibility, high repeatability of results, implementation and maintenance compatible with the capacities of the personnel generally encountered and a reduced footprint. .
• the object of the invention relates to a device for spraying a covering product in the form of powder on a part in particular for automatic retouching intended in particular for an application booth characterized in that it comprises : • a substantially vertical column,
• At least two carriages which can move independently substantially vertically along the column
• At least one carriage is associated with means making it possible to move it and to keep it in position on a continuous set of points on the column.
• This arrangement guarantees adaptation of the reinforcement to the specific shape of each of the parts.
• at least one of the carriages can move along a second axis of movement relative to the vertical column.
• the two axes of movement of the carriages are orthogonal.
• At least one carriage is provided with at least one servomotor provided with a brake intended for its movement.
• the carriages are provided with pinions cooperating with at least one rack integral with the column.
• an automation controls the movement and positioning of the carriages and prevents collisions between the carriages.
• the automation controls the movement and positioning of the carriages to a set point to bring the guns facing particular areas of the part.
• the device is controlled by electronic means which make it possible to control the position of the guns to the position of particular zones of the parts to be reinforced.
• the information concerning the position of the zones can come from various specialized devices such as, for example, cells located at the entrance to the application booth.
• the axes of the application guns are contained in the same application plane.
• the column is mounted on a motorized base which can move it in a plane substantially parallel to the application plane:
• the column is mounted on a motorized base which can move it in a plane substantially perpendicular to the application plane.
• the part to be touched up or to be touched can be more or less deep, from a few centimeters to 1 meter for example, so the device can be pre-positioned so as to be on average at a suitable distance from the part to be treated. It is also useful to be able to position the column laterally with respect to the openings in the side wall of the application booth.
• Figure 1 is a schematic perspective view in its environment comprising an automatic application installation for an embodiment with two positioning axes.
• FIG. 1 represents a general schematic view of an automatic installation for dusting parts in which a conveyor 2 drives in a booth 3 for applying powder swings 4, which support parts to be powdered 5, these parts entering the booth by an inlet opening 6 and emerging powdered by an outlet opening 7.
• the cabin 3 is placed under vacuum relative to the outside by a fan preceded by a filter or a cyclone not shown, and connected by a sheath at the outlet 8 from the bottom of a lower hopper 9 of the cabin 3.
• the powder sprayed by application guns 10, here electrostatic, connected to the appropriate supply and control means, is largely deposited on the part 5, but 30 to 40% of this powder does not deposit and is entrained towards the filter by the cabin vacuum pressure air.
• the vacuuming air is sucked from the workshop to the cabin 3 via all of its openings to the outside and in particular via the inlet 6 and outlet 7 openings, the passage openings 12 of the supports pistols 10 as well as through the passage opening 13 of the swing 4.
• Two spraying devices fitted with guns 10 are associated with the cabin 3, the openings 12 guaranteeing the passage of the guns
• the first automatic device 14 is a conventional device comprising a vertical column 15 and a single carriage 16 associated with an appropriate drive mechanism not shown. This device 14 imposes for example on five superimposed pistols 10 a permanent movement of ascent and descent 21 of amplitude and speed adapted to the number of pistols 10 carried by the carriage 16 and to the running speed of the conveyor 2, so that that a homogeneous electrified cloud of powder is directed from the guns 10 towards the parts to be powdered 5.
• the second spray device 17 object of the invention is a pre-touch or touch-up device.
• the device 17 comprises a vertical column 18 as well as four carriages 19 with crossed movements perpendicular or not with respect to the column 18, which can move independently of one another.
• a gun 10 is fixed on each of these four carriages 19, which can therefore move along the column 18 along arrow 20 and / or perpendicular thereto, along arrow 22 so as to spray a narrow jet of powder and precise on the particular zones of the part 5 that the homogeneous cloud of powder diffused by the automatic device 14 provided with guns 10 could not reach for reasons both electrostatic of field disturbance or Faraday cage phenomenon , or mechanical direct accessibility.
• the guns 10 integral with the carriages 19 are positioned facing the particular areas 23, 24, 25, 26 and touch up or pre-touch these particular areas.
• the part 5 can be more or less deep, from a few cm to 1m for example, also the device 17 can be pre-positioned according to the arrow 29 by means of a base 27 along ground rails 28 so as to be on average at a distance suitable for the part to be treated 5.
• the first automatic device 14 can also be provided with this pre-positioning system.
• An electronic device 30 controls the movement along the two axes 20, 22 of the carriages 19 as well as the electrostatic characteristics of the powder flow rates and the characteristic of the powder jets of each of the electrostatic guns 10 as a function of a set point 32.
• the set point 32 is received-from ⁇ an-appropriate-means-not shown which may be a cell barrier placed at the entrance to the cabin, or an automatic reading device at the entrance to the cabin 3 of bar code placed on the swings 4 or any other appropriate means.
• an-appropriate-means-not shown which may be a cell barrier placed at the entrance to the cabin, or an automatic reading device at the entrance to the cabin 3 of bar code placed on the swings 4 or any other appropriate means.
• FIG. 2 represents a different embodiment of the spraying device 17 compared to FIG. 1.
• the pistols 10 are required to move in the only vertical direction relative to the column 18.
• the device 17 comprises a column 18 on which the carriages 19 move, each of these carriages being guided in its vertical movement by two ball guide rails 33 on which slide the ball skids 34 integral with the carriage 19.
• a servomotor 35 and a gear reducer 36 are fixed which drive a toothed pinion 37 cooperating with a rack 38 secured to the column 18.
• the booster 35 When the booster 35 is actuated in one direction or another, it drives the carriage 19 up or down via its pinion 37 cooperating with the rack 38 secured to the column 18.
• Each booster 35 is provided with a brake, not shown, which keeps the carriage 19 in position when the desired positioning is reached, the booster 35 then being deactivated. Each carriage 19 can thus be moved and held in position on a continuous set of points on the column.
• Each carriage 19 is moreover provided with an encoder, not shown, allowing the control of its position along the column.
• a support arm 39 is fixed to each carriage 19, on which is fixed an application gun 10.
• the column 18 fixed on its base 27 can be positioned relative to the axis of the conveyor via a set of guided wheels 40 on rails 28 fixed to the ground and a reducing servomotor 42 driving a toothed pinion 43 cooperating with a rack 44 fixed to the ground.
• a trolley with two axes it is fixed to some or all of the trolleys 19 and, in place of the arms 39 for pistol support 10, a motorized sub trolley moving for example according to a movement parallel to a-plane-containing-two-guide-rails 33.
• Each gun 10 is then mechanically fixed on a sub carriage.
• This sub carriage can be actuated by a servomotor, a stepper motor, a pneumatic motor or any other type of actuator via a ball screw system, rail and ball shoe, belt system or any other equivalent system.
• the invention is not limited to the embodiment described, on the contrary it embraces all variants.

Landscapes

• Spray Control Apparatus (AREA)
• Electrostatic Spraying Apparatus (AREA)
• Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=33396673

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (22)

Family Cites Families (8)

• 2003
  • 2003-05-22 FR FR0306171A patent/FR2855081B1/fr not_active Expired - Fee Related
• 2004
  • 2004-05-19 EP EP04742792A patent/EP1624971A2/de not_active Withdrawn
  • 2004-05-19 WO PCT/FR2004/001249 patent/WO2004103574A2/fr not_active Ceased
  • 2004-05-19 US US10/557,874 patent/US20070169691A1/en not_active Abandoned
  • 2004-05-19 JP JP2006530371A patent/JP2006528065A/ja active Pending
  • 2004-05-19 BR BRPI0410771-3A patent/BRPI0410771A/pt not_active Application Discontinuation

Non-Patent Citations (1)

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