EP0035459B1 - Zuführvorrichtung für Plasmaspritzvorrichtung - Google Patents

Zuführvorrichtung für Plasmaspritzvorrichtung Download PDF

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Publication number
EP0035459B1
EP0035459B1 EP81420026A EP81420026A EP0035459B1 EP 0035459 B1 EP0035459 B1 EP 0035459B1 EP 81420026 A EP81420026 A EP 81420026A EP 81420026 A EP81420026 A EP 81420026A EP 0035459 B1 EP0035459 B1 EP 0035459B1
Authority
EP
European Patent Office
Prior art keywords
torch
powder
machine
assembly
gas
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.)
Expired
Application number
EP81420026A
Other languages
English (en)
French (fr)
Other versions
EP0035459A1 (de
Inventor
Claude Louis Charles Mouchet
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.)
Cessione Nouvelle De Metallisation Industr Ste
Original Assignee
Societe de Fabrication dElements Catalytiques
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9239311&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0035459(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Societe de Fabrication dElements Catalytiques filed Critical Societe de Fabrication dElements Catalytiques
Priority to AT81420026T priority Critical patent/ATE16898T1/de
Publication of EP0035459A1 publication Critical patent/EP0035459A1/de
Application granted granted Critical
Publication of EP0035459B1 publication Critical patent/EP0035459B1/de
Expired 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
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
    • 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
    • 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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
    • B05B7/222—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc
    • B05B7/226—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc the material being originally a particulate material

Definitions

  • the present invention relates to a machine for reloading parts by the "plasma” process, therefore using an arc formed by an ionized gas column.
  • This machine is of the type comprising a torch and a powder distributor, with a rotating disc with a vertical axis and a scraper, for feeding the torch, the powder being discharged towards the periphery of the disc and flowing from there through a conduit. towards the torch.
  • Such a powder distributor intended for “plasma” recharging torches, is already known from document FR-A-2 234 045.
  • this known distributor the powder discharged from the rotating disc by the action of the scraper falls by gravity into a flow hopper connected to the torch.
  • this dispenser purely mechanical, capable of sucking up the powder and mixing it with a stream of gas which must convey it to the torch.
  • a dispensing device for pulverulent products comprising a rotary plate associated with an air or other gas injector, for obtaining the dispersion in a fluid of the pulverulent product falling from the rotary plate (see FR-A-1 271 615).
  • the object of the present invention is to improve a machine for reloading mechanical parts by the "plasma” process, of the type indicated in the introduction, so as to allow the powder to be sucked up and conveyed under pressure, by a gas " carrier •, up to the torch, in a controlled manner and avoiding any clogging of the conduits by very dense powder.
  • the powder dispenser comprises at least one gas injector comprising a funnel-shaped receiver arranged below the periphery of the rotating disc and surmounting a diffuser with a lateral gas inlet and openings gas inlet, the configuration of the diffuser and the arrangement of the inlet openings being such that a gas vortex is created, in which the powder is sprayed, an outlet located at the base of the injector under the diffuser being connected, by a conduit, to the torch.
  • a gas injector comprising a funnel-shaped receiver arranged below the periphery of the rotating disc and surmounting a diffuser with a lateral gas inlet and openings gas inlet, the configuration of the diffuser and the arrangement of the inlet openings being such that a gas vortex is created, in which the powder is sprayed, an outlet located at the base of the injector under the diffuser being connected, by a conduit, to the torch.
  • each injector is further connected by a channel to the chamber containing the rotary disc.
  • the supply of powder is ensured, according to another characteristic, by means of two jars disposed above a body forming a collector, which surmounts the part containing the rotary disc, a drawer which can be moved horizontally in said body making it possible to put into service. either of the two jars of powder.
  • These provisions allow alternative use and filling of the two jars, which can be facilitated by providing, at the base of each jar, a level control means (magnetic detector).
  • the device can even be further improved, by slaving the operation of the drawer to the level detection signal, and / or by providing for the automatic stopping of the machine if the control means detect an absence of powder simultaneously in the two jars.
  • the torch supplied from the powder distributor by flexible conduits, is supported by a mobile assembly, comprising a horizontal translation control and a vertical translation control.
  • This mechanical assembly preferably remotely controlled, gives an exact position of the torch in the longitudinal position and in height, without the need for adjustments on the machine itself.
  • the horizontal translation control itself comprises, in addition to the means making it possible to position the torch longitudinally, other means which make it possible to control, in an adjustable manner, an oscillation of the torch.
  • the motors used will be, in particular, electric stepper motors, allowing centralized digital control of the movements of the torch.
  • the control screws can be, in whole or in part, ball screws.
  • the machine generally comprises a fixed support 1, above which is mounted a fixed powder distributor 2, the support 1 also serving as a guide for a mobile assembly 3 supporting the torch 4, the latter being supplied from the distributor 2 by two flexible conduits 5 and 6.
  • the powder distributor 2, fixed above the support 1 by means of a vertical plate 7, is shown in detail in FIGS. 3 to 6.
  • This distributor comprises a body, formed by an upper element 8 and a lower element 9, between which is slidably mounted, in horizontal direction, a first drawer 10.
  • the upper element 8, having two symmetrical recesses 11, serves as support for two jars 12 made of transparent material, each jar 12 surmounting one of the recesses 11 and being closed at its top by a removable cover 13.
  • the lower element 9 has a central opening 14 in the form of a funnel.
  • the drawer 10, guided in sliding and stopped by a finger 15 engaged in a groove, has a hole 16 making it possible to communicate one or the other of the two recesses 11 with the opening 14 located below.
  • a sub-assembly consisting of an upper plate 17 and a lower plate 18, between which is interposed a ferrule 19 made of transparent material.
  • the lower plate 18 comprises two diametrically opposite housings 30, situated below the periphery of the disc 22, which receive two respective injectors 31, the details of which are clearly visible in FIGS. 5 and 6.
  • Each injector 31, of vertical axis comprises a diffuser 32 surmounted by a receiver 33, these two parts being mounted in the corresponding housing 30, with interposition of respective O-rings 34 and 35, and being retained in said housing 30 by a circlip 36.
  • a nozzle 37 fixed on the side of the plate 18, constitutes a lateral inlet of carrier gas, which is distributed by means of the diffuser 32 whose particular conformation, with openings 38 offset radially, appears in FIG. 6
  • a bent channel 39 hollowed out in the plate 18, further communicates the chamber containing the rotary disc 22 with the annular space which, through the above-mentioned openings 38, communicates with the interior of the injector.
  • an outlet nozzle 40 is mounted at the base of each injector 31, under the diffuser 32, to which one of the flexible conduits 5 and 6 leading to the torch 4 is connected.
  • the powder dispenser 2 operates as follows: The powder supply is ensured by means of a single jar 12, or by means of the two jars 12, used alternately. In this case, a level control means 41, provided on the element 8 at the base of each jar 12, emits a signal announcing that this jar is almost empty. The first drawer 10 is then moved so as to put the other jar 12 in service, and to proceed to filling the jar which has just been emptied and so on ...
  • the powder reaches, by gravity and sliding, in the central opening 14. From there, it falls either simultaneously in the two holes 20, or in only one of these holes 20, depending on the position of the second drawer 21. In fact, one of the holes 20 is closed by means of this drawer 21 only when it is desired to use a torch 4 with a single powder supply.
  • the latter reaches the disc 22, driven in rotation, preferably at adjustable speed, from the gear motor 24
  • the powder is thus driven in rotation with the disc 22 and, meeting the scrapers 27, it is moved outwards and falls from the disc 22 into the receivers 33, in the form of funnels, from the injectors 31. is thus projected in the center of each injector, where it is sucked in by the gas stream, which forms a vortex taking into account the conformation diffuser 32 with its openings 38 (see Figure 6), the channel 39 for balancing the pressures.
  • the powder is conveyed. Under pressure by the gas, through the conduits 5 and 6, to the torch 4, produced according to a known principle and not forming the subject of the present invention.
  • This torch 4 is mounted, held by a support 42, on the mobile assembly 3 already mentioned, which generally comprises a horizontal translation control 43 and a vertical translation control 44, making it possible to move the torch 4 horizontally (arrow 45 ) and vertically (arrow 46) - see Figures 1 and 2.
  • FIGS. 7 to 10 The structure of the mobile assembly 3 and of the means which control the movement of the torch 4 is illustrated, more precisely, by FIGS. 7 to 10.
  • This device comprises a first movable sub-assembly, formed by two pairs of parallel and horizontal guide bars, respectively 47 and 48, the ends of which are fixed to two flanges 49 and 50, one of these flanges 49 carrying the control of horizontal translation 43.
  • the first two guide bars 47 of this movable sub-assembly are slidably mounted, by means of ball bushings 51, on the fixed support 1 which they pass through horizontally .
  • a control screw 54 driven in rotation by a motor 55, forming part of the horizontal translation control 43.
  • This screw 54 cooperates with a complementary element 56 mounted on the fixed support 1; it can be an ordinary screw or a ball screw.
  • the screw 54 is protected by two bellows 57 and 58, arranged between the flanges 49 and 50, on either side of the fixed support 1.
  • a carriage 60 On the other two guide bars 48 of the mobile sub-assembly under consideration, is slidably mounted, by means of ball bushings 59 (see FIG. 10), a carriage 60. Between the two guide bars 48 is rotatably mounted, in bearings 61 and 62 carried by the flanges 49 and 50, a control screw 63. The latter is rotated from a motor 64, forming part of the horizontal translation control 43, this by means of pinions 65 and 66 (see also Figure 8). The screw 63 cooperates with a complementary element 67 mounted on the carriage 60. Preferably, it is a ball screw, and this is protected by two bellows 68 and 69, arranged between the flanges 49 and 50, on either side of the carriage 60.
  • This carriage 60 supports another mobile sub-assembly, formed by two parallel and vertical guide bars 70, the ends of which are joined by an upper plate 71 and a lower plate 72, the upper plate 71 carrying the vertical translation control 44.
  • the two guide bars 70 of this second mobile sub-assembly are slidably mounted, by means of ball bushings 73, on the carriage 60 which they pass vertically.
  • a control screw 76 driven in rotation by a motor 77, forming part of the vertical translation control 44.
  • This screw 76 cooperates with a complementary element 78 mounted on the carriage 60; it may be an ordinary screw or a ball screw, protected by a bellows 79 disposed between the carriage 60 and the upper plate 71.
  • the support 42 in the form of a collar, which receives the torch 4.
  • This vertically mobile assembly is also associated with a pneumatic weight balancer, including an accumulator 80 carried by the carriage 60 (see FIGS. 7 and 8).
  • the motor 77 makes it possible, once the horizontal position of the carriage 60 has been fixed, to vertically move the torch 4.
  • the motor 64 makes it possible, in addition to the horizontal positioning, to control an oscillation of the carriage 60, therefore of the torch 4, on either side of a medium position. It is possible to provide an adjustment of the stroke and of the speed of this oscillation movement, as well as an adjustment of the timing of the stops at the ends of the stroke (possibly: independent adjustment for each end).
  • This machine for reloading parts by the plasma process allows, as regards its applications, both reloading by projection as welded reloading, and it is programmable in pre- and post-welding (variation of the rotation speed of the disc 22).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Nozzles (AREA)
  • Arc Welding In General (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Plasma Technology (AREA)

Claims (7)

1. Plasmaspritzvorrichtung für mechanische Bauteile, bestehend aus einem Brenner (4) und einem Pulververteiler (2) mit rotierender Scheibe (22) in senkrechter Achslage (23) und mit einem Abstreifer (27) zur Beschickung des Brenners (4), wobei das Pulver zur Peripherie der Scheibe (22) befördert wird und von dort durch die Leitung (5, 6) in den Brenner (4) gelangt, dadurch gekennzeichnet, daß der Pulververteiler (2) mit mindestens einem Gasinjektor (31) versehen ist, der mit einem Einlauftrichter (33) unterhalb der Peripherie der rotierenden Scheibe (2) und über einem Diffusor (32) mit einem seitlichen Gaseintrittsstutzen (37) und Gaseintrittsöffnungen (38) angeordnet ist, wobei die Form des Diffusors (32) und die Anordnung der Eintrittsöffnungen (38) so gewählt ist, daß sich ein Gaswirbel bildet, in welchen das Pulver eingespritzt wird, und wobei ein am Unterteil des Injektors (31) unterhalb des Diffusors (32) angebrachter Austrittsstutzen (40) über die genannte Leitung (5, 6) mit dem Brenner (4) in Verbindung steht.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jeder Injektor (31 außerdem über einen Druckausgleichskanal (39) mit der die rotierende Scheibe (22) umschließenden Kammer verbunden ist.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwei gläserne. Pulverbehälter (12) auf einer als Sammler dienenden Grundplatte (8, 9) angeordnet sind, welche sich über der die rotierende Scheibe (22) einschließenden Baugruppe (18, 19, 20) befindet, wobei ein horizontal beweglicher Schieber (10) den Betrieb wahlweise auf dem einen oder anderen Pulvergefäß (12) ermöglicht.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß am Unterteil eines jeden Glasbehälters (12) ein Pulverstandswächter (41), beispielsweise in Form eines Magnetdetektors, angebracht ist.
5. Vorrichtung nach den Ansprüchen 1, 2, 3 oder 4, dadurch gekennzeichnet, daß der von dem Pulververteiler (2) über die Schlauchleitungen (5, 6) beschickte Brenner (4) auf einer beweglichen Baugruppe (3) montiert ist und darauf horizontal (43) und vertikal (44) verfahrbar ist.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der Antrieb für die Horizontalbewegung (43) einerseits mit Hilfsmitteln (54, 55, 56) zur Positionierung des Brenners (4) ausgerüstet ist.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die bewegliche Baugruppe (3) aus folgenden Teilen besteht :
einer ersten Unterbaugruppe mit in einer festen Halterung (1) gleitbar gelagerten horizontalen Führungsstangen (47), wobei der Pulververteiler (2) auf der Halterung montiert ist, sowie mit einer ersten Gewindespindel (54) mit Antrieb durch einen Motor (55) zum Verfahren gegenüber der festen Halterung (1), und mit zusätzlichen und zu den erstgenannten parallel verlaufenden Führungsstangen (48), auf welchen ein durch eine zweite Gewindespindel (63) mit Antriebsmotor (64) verfahrbarer Schlitten (60) gleitet,
einer zweiten Unterbaugruppe mit in dem Schlitten (60) gleitbar gelagerten vertikalen Führungsstangen (70), welche den Brenner (4) trägt und mit Hilfe einer Gewindespindel (76) mit einem Antriebsmotor (77) vertikal verfahrbar ist.
EP81420026A 1980-02-28 1981-03-02 Zuführvorrichtung für Plasmaspritzvorrichtung Expired EP0035459B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81420026T ATE16898T1 (de) 1980-02-28 1981-03-02 Zufuehrvorrichtung fuer plasmaspritzvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8004858A FR2477050A1 (fr) 1980-02-28 1980-02-28 Machine pour le rechargement de pieces mecaniques par procede " plasma "
FR8004858 1980-02-28

Publications (2)

Publication Number Publication Date
EP0035459A1 EP0035459A1 (de) 1981-09-09
EP0035459B1 true EP0035459B1 (de) 1985-12-11

Family

ID=9239311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81420026A Expired EP0035459B1 (de) 1980-02-28 1981-03-02 Zuführvorrichtung für Plasmaspritzvorrichtung

Country Status (4)

Country Link
EP (1) EP0035459B1 (de)
AT (1) ATE16898T1 (de)
DE (1) DE3173167D1 (de)
FR (1) FR2477050A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715172B1 (fr) * 1994-01-17 1997-03-21 Claude Mouchet Lame de tondeuse pour l'industrie textile et autres industries dérivées.
FR2727273A1 (fr) * 1994-11-18 1996-05-24 Mouchet Claude Distributeur de poudre pour l'alimentation d'une torche p.t.a.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE507035C (de) * 1930-09-12 Hermann Hartmann Vorrichtung zur selbsttaetigen Regelung der Ablaufmenge des Foerdergutes bei Sammelbehaeltern von Luftfoerderanlagen
CH380026A (de) * 1959-09-18 1964-07-15 Degussa Vorrichtung zum kontinuierlichen Ein- und Austragen von Feststoffen
FR1271615A (fr) * 1960-08-02 1961-09-15 Machine pneumatique pour exécuter des enduits de toute nature
DE1805145A1 (de) * 1968-10-25 1970-09-03 Gema Ag Appbau Einrichtung mit Spritzpistole
CH518215A (de) * 1969-10-24 1972-01-31 Harter August Vorrichtung zur kontinuierlichen Dosierung pulverförmiger Medien
FR2106780A5 (en) * 1970-09-24 1972-05-05 Saviem Spray metallising plant - for applying metal coatings to mechanical components in the motor industry
GB1378748A (en) * 1972-03-03 1974-12-27 Atomic Energy Authority Uk Powder entraining apparatus
BE801288A (fr) * 1973-06-22 1973-10-15 Soudure Autogene Elect Distributeur de poudres
US4099481A (en) * 1976-09-30 1978-07-11 Eutectic Corporation Apparatus for applying metal coatings to a metal substrate
US4089293A (en) * 1976-10-29 1978-05-16 Eutectic Corporation Multiple-coordinate means for applying a metal coating to a metal substrate
DE2807866C2 (de) * 1978-02-23 1979-09-20 Plasmainvent Ag, Zug (Schweiz) Vorrichtung zum dosierten Zuführen von Pulver zu einer Pulververarbeitungseinheit

Also Published As

Publication number Publication date
FR2477050A1 (fr) 1981-09-04
DE3173167D1 (en) 1986-01-23
ATE16898T1 (de) 1985-12-15
FR2477050B1 (de) 1984-04-27
EP0035459A1 (de) 1981-09-09

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