EP0035459A1 - Zuführvorrichtung für Plasmaspritzvorrichtung - Google Patents
Zuführvorrichtung für Plasmaspritzvorrichtung Download PDFInfo
- Publication number
- EP0035459A1 EP0035459A1 EP81420026A EP81420026A EP0035459A1 EP 0035459 A1 EP0035459 A1 EP 0035459A1 EP 81420026 A EP81420026 A EP 81420026A EP 81420026 A EP81420026 A EP 81420026A EP 0035459 A1 EP0035459 A1 EP 0035459A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torch
- powder
- machine according
- gas
- funnel
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 41
- 230000010355 oscillation Effects 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 abstract 1
- 235000010599 Verbascum thapsus Nutrition 0.000 description 42
- 244000178289 Verbascum thapsus Species 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 230000000295 complement effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000012550 audit Methods 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
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 recharging mechanical parts by the "plasma” process, therefore using an arc formed by an ionized gas column.
- Machines of this kind are already known, which in all cases include a torch and a powder distributor supplying said torch.
- current reloading machines have, in operation, limited performances, which the present invention proposes to improve. , in particular in the following aspects: saving powder, controlling the dilution rate, increasing the deposit rate (in welded reloading), positioning and mobility of the torch, ease of control and maneuvering, both for the dispenser powder and for the torch, so as to produce a rational and efficient machine.
- the invention also aims to provide a universal machine, allowing recharging by projection. tion, as well as welded reloading, and programmable in pre- and post-welding.
- the machine according to the invention for reloading mechanical parts by the "plasma” process of the type comprising a torch and a powder distributor, with a rotating disc with a vertical axis and a scraper, feeding said torch, is essentially characterized by the fact that the powder distributor comprises at least one gas injector, disposed below the periphery of the rotary disc, and having its outlet connected, by a direct conduit, to the torch.
- This injector allows the powder to be sucked in and conveyed under pressure, by a "carrier” gas, to the torch, avoiding any clogging of the conduits by the very dense powder.
- a "carrier" gas e.g., a "carrier" gas
- two gas injectors are arranged, diametrically opposite, below the periphery of the same rotating disc, associated with two scrapers and receiving the powder by two symmetrical funnel-shaped holes, each of the two injectors having its outlet connected, by a corresponding conduit, to the torch-
- a drawer is provided, which can be moved horizontally. so that one of the two funnel-shaped holes can be closed in one position when you want to use a torch with a single powder supply.
- a guide sleeve, rubbing on the upper face of the disc is freely mounted in the cylindrical lower part of each funnel-shaped hole .
- each of them comprises in particular a receiver, in the form of a funnel, surmounting a diffuser, as well as a lateral gas inlet, the conformation of the diffuser being such that a gas vortex is created, into which the powder is sprayed.
- 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 may 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 Figures 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 a 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 slide 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, located below the periphery 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 on the Figure 6.
- a bent channel 39 hollowed out in the plate 18, further communicates the chamber containing the rotating disc 22 with the annular space which, through the aforementioned openings 38, communicates with the interior of the injector.
- an outlet stub 4 At the base of each injector 31 in the diffuser 32, there is mounted an outlet stub 4 0, to which is connected one of the flexible ducts 5 and 6 leading to the torch 4.
- the powder dispenser 2 described above, operates as follows
- the powder supply is ensured by means of a single jar 12, or by means of two jars 12, used alternately.
- a level 41 control means provided on 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 proceed to fill 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 one wants to use a torch 4 with a single supply powder.
- 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 at the center of each injector, where it is sucked in by the gas stream, which forms a vortex taking into account the particular conformation of the diffuser 32 with its openings 38 (see FIG. 6), the channel 39 allowing 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 .
- This device comprises a first subset of mobile, consisting of two pairs of parallel guide bars and horizontal, respectively 47 and 4 8, whose ends are fixed to two flanges 49 and 50, one of these flanges 49 on the control horizontal translation 43.
- the first two guide bars 47 of this mobile 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 subassembly formed by two parallel and vertical guide bars 70, whose ends are joined by a top plate 71 and a lower plate 72, the ceiling ti n e 71 carrying the upper control vertical translation 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).
- This machine for reloading parts by "plasma” process allows, as regards its applications, both reloading by projection as welded reloading, and it is programmable in p re-and post-welding (variation of the speed of rotation of the disc 22).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Nozzles (AREA)
- Arc Welding In General (AREA)
- Plasma Technology (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Preliminary Treatment Of Fibers (AREA)
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 |
---|---|---|---|
FR8004858 | 1980-02-28 | ||
FR8004858A FR2477050A1 (fr) | 1980-02-28 | 1980-02-28 | Machine pour le rechargement de pieces mecaniques par procede " plasma " |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0035459A1 true EP0035459A1 (de) | 1981-09-09 |
EP0035459B1 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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2715172A1 (fr) * | 1994-01-17 | 1995-07-21 | Mouchet Claude | Lame de tondeuse pour l'industrie textile et autres industries dérivées. |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2727273A1 (fr) * | 1994-11-18 | 1996-05-24 | Mouchet Claude | Distributeur de poudre pour l'alimentation d'une torche p.t.a. |
Citations (11)
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 | |
FR1271615A (fr) * | 1960-08-02 | 1961-09-15 | Machine pneumatique pour exécuter des enduits de toute nature | |
GB943803A (en) * | 1959-09-18 | 1963-12-04 | Degussa | Apparatus for the continuous introduction and discharge of solid substances |
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 |
FR2234045A1 (en) * | 1973-06-22 | 1975-01-17 | Arcos Soudure Elect Autogene | Plasma torch dispenser - for small grain sizes |
DE2743833A1 (de) * | 1976-09-30 | 1978-04-06 | Eutectic Corp | Vorrichtung zum aufbringen einer metallischen spruehbeschichtung auf einem substrat und mittels der vorrichtung durchfuehrbares verfahren zum spruehbeschichten |
DE2748490A1 (de) * | 1976-10-29 | 1978-05-03 | Eutectic Corp | Vorrichtung zum aufbringen einer metallischen beschichtung auf einem substrat durch flammspritzen sowie verfahren zum flammspritzen, das mittels der vorrichtung durchfuehrbar ist |
DE2807866B1 (de) * | 1978-02-23 | 1979-01-25 | Plasmainvent Ag | Vorrichtung zum dosierten Zufuehren von Pulver zu einer Pulververarbeitungseinheit |
-
1980
- 1980-02-28 FR FR8004858A patent/FR2477050A1/fr active Granted
-
1981
- 1981-03-02 DE DE8181420026T patent/DE3173167D1/de not_active Expired
- 1981-03-02 AT AT81420026T patent/ATE16898T1/de active
- 1981-03-02 EP EP81420026A patent/EP0035459B1/de not_active Expired
Patent Citations (11)
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 | |
GB943803A (en) * | 1959-09-18 | 1963-12-04 | Degussa | Apparatus for the continuous introduction and discharge of solid substances |
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 |
FR2234045A1 (en) * | 1973-06-22 | 1975-01-17 | Arcos Soudure Elect Autogene | Plasma torch dispenser - for small grain sizes |
DE2743833A1 (de) * | 1976-09-30 | 1978-04-06 | Eutectic Corp | Vorrichtung zum aufbringen einer metallischen spruehbeschichtung auf einem substrat und mittels der vorrichtung durchfuehrbares verfahren zum spruehbeschichten |
DE2748490A1 (de) * | 1976-10-29 | 1978-05-03 | Eutectic Corp | Vorrichtung zum aufbringen einer metallischen beschichtung auf einem substrat durch flammspritzen sowie verfahren zum flammspritzen, das mittels der vorrichtung durchfuehrbar ist |
DE2807866B1 (de) * | 1978-02-23 | 1979-01-25 | Plasmainvent Ag | Vorrichtung zum dosierten Zufuehren von Pulver zu einer Pulververarbeitungseinheit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2715172A1 (fr) * | 1994-01-17 | 1995-07-21 | Mouchet Claude | Lame de tondeuse pour l'industrie textile et autres industries dérivées. |
Also Published As
Publication number | Publication date |
---|---|
ATE16898T1 (de) | 1985-12-15 |
DE3173167D1 (en) | 1986-01-23 |
FR2477050A1 (fr) | 1981-09-04 |
FR2477050B1 (de) | 1984-04-27 |
EP0035459B1 (de) | 1985-12-11 |
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