EP0554163B1 - Strahlreinigungsmaschine - Google Patents

Strahlreinigungsmaschine Download PDF

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Publication number
EP0554163B1
EP0554163B1 EP19930400186 EP93400186A EP0554163B1 EP 0554163 B1 EP0554163 B1 EP 0554163B1 EP 19930400186 EP19930400186 EP 19930400186 EP 93400186 A EP93400186 A EP 93400186A EP 0554163 B1 EP0554163 B1 EP 0554163B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
pinion
blasting machine
rocker bar
hollow shaft
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 - Lifetime
Application number
EP19930400186
Other languages
English (en)
French (fr)
Other versions
EP0554163A1 (de
Inventor
Bernard Thome
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.)
Wheelabrator Sisson Lehmann
Original Assignee
Wheelabrator Sisson Lehmann
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 Wheelabrator Sisson Lehmann filed Critical Wheelabrator Sisson Lehmann
Publication of EP0554163A1 publication Critical patent/EP0554163A1/de
Application granted granted Critical
Publication of EP0554163B1 publication Critical patent/EP0554163B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B24C9/003—Removing abrasive powder out of the blasting machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts

Definitions

  • the present invention relates to a shot blasting machine according to the preamble of claim 1.
  • a shot blasting machine is known, for example, from SU-A-905 035.
  • the invention relates to machines which comprise a chassis supporting a carriage movable in two perpendicular directions on which is mounted a blasting nozzle, the latter being connected by flexible hoses to a source of pressurized fluid and being carried by a vertically movable support, said nozzle being orientable.
  • the nozzle is placed in a cabin in which is mounted a support on which the object to be shot blasted is fixed.
  • the nozzle can be controlled so that the entire surface of a part is blasted.
  • One of the aims of the present invention is to remedy this drawback.
  • the shot blasting machine is of the type comprising a cabin intended to receive the object to be shot blasted, a blasting unit with a compressor for sending, under pressure, shot through a conduit, to a nozzle. projection housed in the cabin, the machine being characterized in that the nozzle is carried by one of the ends of a link, the other end of which is secured to a horizontal axis connected by a kinematic link to a pinion wedged in the vicinity of the lower end of a hollow axis, the upper end of which comprises a crown engaged with a pinion of a first electric motor, on said hollow axis, in the vicinity of the crown, being rotatably mounted a second engaged crown with a pinion of a second electric motor, said second ring being secured to a housing guided by bearings on the hollow shaft, said housing being extended by a second housing body comprising guide elements for the kinematic connection and arranged so as to be able to rotate around the pinion of the lower end of the hollow axis
  • the horizontal axis, one end of which is integral with one of the ends of the rod comprises, at its other end, a corner pinion engaged with a corner pinion wedged on an axis guided by bearings in the second housing body and on which is fixed a pinion engaged with the pinion of the lower end of the hollow axis.
  • the nozzle is integral with one end of a flexible pipe connected to the end of a rigid pipe crossing the hollow axis and connected by a rotating joint to the supply of abrasives.
  • the machine includes means for cutting off the power to the electric motors so that the travel of the link cannot exceed angular positions greater than 180 °. Thanks to this arrangement, any possibility of damage to the machine is avoided.
  • the means for cutting off the power to the electric motors, so that the travel of the link cannot exceed angular positions greater than 180 ° comprise two pinions in engagement, one with one of the crowns and the other with the other, one of the pinions being connected to a keyed sliding screw and the other to a nut, the screw carrying a member capable of cooperating with members for controlling the stopping of the motors when the position rod angle exceeds determined thresholds.
  • Means may be provided for detecting an angular reference position of the link.
  • the machine comprises a programmable control member inserted on the circuit of the electric motors to control the position of the nozzle and the angular position of the link.
  • FIG. 1 there is shown schematically a shot blasting machine, according to the invention, this machine comprising a frame 1 comprising a cabin 2 in which is mounted a carriage 3 guided on rails 4 and provided with a brake 5 for the 'immobilize on said rails.
  • the carriage 3 comprises a plate 6 intended to receive the part to be shot blasted.
  • shot means materials in the form of granules having a variable hardness depending on the work to be performed.
  • the nozzle 7 is connected by a tubular element 9 to a shot blasting assembly 10 comprising a compressor, a filter and a shot tank.
  • a shot blasting assembly 10 comprising a compressor, a filter and a shot tank.
  • an endless screw 12 is provided to recover the shot used and which, by an elevator 11, is brought to a purifier 13 where the grains no longer having the desired particle size are eliminated, the others being recycled.
  • the cabin 2 has at its upper part two guide units 17 mounted on a chassis 16 on which an assembly 40 is guided.
  • An electric motor 18 comprising on its output shaft a pinion 19 drives, by a toothed belt 20, a pinion 21 wedged at one end of a ball screw 22 which cooperates with a nut 23 integral with the assembly 40.
  • the guide unit 17 supports a body 25 in which stands a tubular element 41 with which cooperate two rollers 26 carried by a nut 28 comprising a nut 29 for a ball screw 31, on which is stuck a pinion 32 driven by a toothed belt passing over a pinion 34 wedged on the output shaft of an electric motor 35 (see FIGS. 5 and 5A).
  • the nut 28 has a flange 39 which is traversed by a sleeve 27 fixed in said flange.
  • the control assembly 40 of the nozzle 7 (see fig. 3) is thus supported by the nut 28.
  • bearings 45 and 46 Between the hollow axis 43 and the housing 42 are inserted bearings 45 and 46, said housing being secured to a toothed ring 47 driven by a pinion 48 wedged on the output shaft of an electric motor 49 fixed on a plate 50.
  • the plate 50 is fixed and a bearing 51 is inserted between the latter and the housing 42.
  • the plate 50 is integral with the sleeve 27 and a bearing 52 is inserted between said housing 42 and a ring 38 integral with said sleeve 27.
  • the entire housing 42 can rotate around the hollow axis 43.
  • the housing 42 is extended laterally by a second housing body 56 which extends parallel to the housing 42 and in which is guided, in bearings 57, 58, 59 and 60, an axis 61 on which is wedged, at the end upper, a pinion 62 in engagement with a pinion 63 fixed on the hollow axis 43, while at its lower end is wedged a corner pinion 65 engaged with a corner pinion 66 wedged on an axis 67 guided in bearings 68 and 69 (see FIG. 3A).
  • the nozzle 7 is secured to a flexible pipe 80 which is fixed to the corresponding end of a rigid tube 83 by a nut 81 screwed onto a screw 82 secured to the housing 56.
  • the rigid tube 83 crosses the hollow axis 43 and is connected by a rotary joint 84 to the peening assembly 10.
  • a joint 86 is inserted between the flexible pipe 80 and the corresponding end of the rigid tube 83.
  • the pinion 48 drives the crown 47 and the housing 42.
  • the second housing body 56 is integral with the housing 42, said second body 56 rotates around the hollow axis 43, the pinion 62 rotates on pinion 63 and axis 67 is driven by pinions 65 and 66 so that the link 71 pivots in one direction or the other according to the direction of rotation of the motor 49.
  • the link 71 carrying the nozzle 7 is also rotated.
  • the pinion 74 drives the crown 73 which drives the hollow pin 43, which drives the pinion 63 which cooperates with the pinion 62, the axis 61 and the pinions 65 and 66 modifying the angular position of the connecting rod 71.
  • a safety system is provided, shown in detail in FIG. 4.
  • the crown 73 meshes with a pinion 90 wedged on an axis 91 guided in a ring 92 and held by two shoulders 93 and 94.
  • the axis 91 carries a lateral key 96 which cooperates with a groove 97 of a hollow screw 98 whose threads 99 are screwed into the thread 100 of a nut 101 guided in a ring 102 housed in a bore 103 of the plate 50.
  • the nut 101 is integral with a ring 104 mounted on the ring 92 and on which a pinion 105 is wedged in engagement with the crown 47.
  • the hollow screw 98 is terminated by a flange 110 and there are provided on a support 111 organs 106 and 107 such as limit switches, proximity switches or the like in order to control the stopping of the motors 49 and 75 when the nozzle 7 arrives in the two horizontal extreme positions.
  • a detector 108 can be provided on a support 112 corresponding to the vertical position of the nozzle 7 and constituting a reference position.
  • Figure 6 schematically shows the operation of the nozzle control assembly.
  • the motors 49 and 75 are connected to a programmable control member 111 which, from a reference position, for example, the vertical position of the nozzle, makes it possible to control, from a on the one hand, the motor 49 to modify the position of the nozzle 7 and, on the other hand, simultaneously the motor 75 in order to modify the angular position of the link 71 carrying the nozzle 7.
  • a reference position for example, the vertical position of the nozzle
  • the motor 18 makes it possible to control the movement of the mobile assembly 40 and thus to move the nozzle 7 horizontally in one direction and in the other, while the motor 35 makes it possible to adjust the height of said nozzle 7.
  • the motors 49 and 75 are controlled in order to control, by the motor 49, the rotation of the nozzle 7, the motor 75 being controlled simultaneously so, by the crown 73 and the pinions 63 and 62, to make up for the modification of the angular position of the rod 71 generated by the rotation of the pinion 62 around the pinion 63.
  • the motor 75 can be controlled independently so that the rod 71 is brought into the angular position suitable for the work to be done.

Claims (9)

  1. Strahlreinigungsmaschine von derjenigen Art, die eine zur Aufnahme des Gegenstandes, der strahlgereinigt werden soll, vorgesehene Kabine und eine Strahlreinigungseinheit mit einem Verdichter aufweist, um Strahlkornmaterial unter Druck über eine Leitung zu einer Abstrahldüse (7) zu fördern, die in der Kabine angeordnet ist, dadurch gekennzeichnet, daß die Düse (7) durch eines der Enden eines Schwingarmes (71) gehalten ist, dessen anderes Ende an einer horizontalen Achse (67) befestigt ist, die durch eine kinematische Verbindung (61, 62) mit einem Ritzel (63) verbunden ist, das in der Nähe des unteren Endes einer Hohlwelle (43) festgelegt ist, deren oberes Ende einen Zahnkranz (73) in Eingriff mit einem Ritzel (74) eines ersten Elektromotors (75) aufweist, daß auf der genannten Hohlwelle (43), in der Nähe des Zahnkranzes (73), drehbar ein zweiter Zahnkranz (47) in Eingriff mit einem Ritzel (48) eines zweiten Elektromotors (49) angeordnet ist, der genannte zweite Zahnkranz (47) an einem Gehäuse (42) befestigt ist, das durch Lager auf der Hohlwelle (43) geführt ist, das genannte Gehäuse (42) durch einen zweiten Gehäusekörper (56) verlängert ist, der Führungselemente für die kinematische Verbindung (61, 62) aufweist und so eingerichtet ist, daß er sich um das Ritzel (63) am unteren Ende der Hohlwelle (43) herum in einer Weise drehen kann, um die Drehung der Düse (7) zu steuern, und daß der erste Elektromotor (75) die Veränderung der Winkelposition des Schwingarmes steuert und sich die Versorgungsleitung der Düse (7) durch die Hohlwelle (43) hindurch erstreckt.
  2. Strahlreinigungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die horizontale Achse (67), deren eines Ende mit einem der Enden des Schwingarmes (71) verbunden ist, an ihrem anderen Ende ein Kegelrad (66) aufweist, das in Eingriff mit einem Kegelrad (65) ist, das auf einer Welle festgelegt ist, die durch Lager in dem zweiten Gehäusekörper (56) geführt und auf der ein Ritzel (62) festgelegt ist, das mit dem Ritzel (63) des unteren Endes der Hohlwelle (43) in Eingriff ist.
  3. Strahlreinigungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Düse (7) am einen der Enden eines flexiblen Rohres (80) befestigt ist, das mit einer starren Leitung (83) in Verbindung ist, die sich durch die Hohlwelle (43) hindurch erstreckt und über eine Drehkupplung mit der Strahlreinigungseinheit verbunden ist.
  4. Strahlreinigungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß sie Mittel zum Unterbrechen der Versorgung der Elektromotoren (49, 75) aufweist, damit die Auslenkung des Schwingarmes Winkelpositionen von mehr als 180° nicht überschreiten kann.
  5. Strahlreinigungsmaschine nach Anspruch 4, dadurch gekennzeichnet, daß die Mittel, um die Versorgung der Elektromotoren (49 und 75) zu unterbrechen, damit die Auslenkung des Schwingarmes (71) Winkelpositionen von mehr als 180° nicht überschreiten kann, zwei Ritzel (90, 105) aufweist, von denen eines mit dem einen der Zahnkränze (47, 73) und das andere mit deren anderem in Eingriff ist, das eine der Ritzel mit einer verschiebbaren Schraube (98) in Keilverbindung und das andere mit einer Mutter (101) verbunden ist und die Schraube (98) ein Organ (110) trägt, das mit Organen (106, 107) zur Steuerung des Anhaltens der Motoren (49, 75) zusammenwirkt, wenn die Winkelstellung des Schwingarmes (71) vorbestimmte Schwellenwerte überschreitet.
  6. Strahlreinigungsmaschine nach den Ansprüchen 4 und 5, dadurch gekennzeichnet, daß sie Mittel (108, 110) zur Erkennung einer Bezugs-Winkelposition des Schwingarmes (71) aufweist.
  7. Strahlreinigungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß sie ein programmierbares Steuerorgan (110) aufweist, das in den Stromkreis der Elektromotoren (49, 75) eingeschaltet ist, um die Position der Düse (7) und die Winkelposition des Schwingarmes (71) zu steuern.
  8. Strahlreinigungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß sie Mittel (16, 17, 18) für die Steuerung einer Horizontalverschiebung der Düse aufweist.
  9. Strahlreinigungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß sie Mittel (35) für die Steuerung einer Vertikalverschiebung der Düse aufweist.
EP19930400186 1992-01-29 1993-01-26 Strahlreinigungsmaschine Expired - Lifetime EP0554163B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200947A FR2686540B1 (fr) 1992-01-29 1992-01-29 Perfectionnements aux machines a grenailler.
FR9200947 1992-01-29

Publications (2)

Publication Number Publication Date
EP0554163A1 EP0554163A1 (de) 1993-08-04
EP0554163B1 true EP0554163B1 (de) 1996-09-04

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EP19930400186 Expired - Lifetime EP0554163B1 (de) 1992-01-29 1993-01-26 Strahlreinigungsmaschine

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EP (1) EP0554163B1 (de)
DE (1) DE69304360T2 (de)
FR (1) FR2686540B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522760A (en) * 1994-08-22 1996-06-04 Cummins Engine Company, Inc. Method of microdeburring a bore

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU781039A1 (ru) * 1975-01-06 1980-11-23 Предприятие П/Я Р-6639 Дробеструйна установка
SU905035A1 (ru) * 1976-09-06 1982-02-15 Всесоюзный Проектно-Конструкторский Технологический Институт Атомного Машиностроения И Котлостроения "Атомкотломаш" Установка дл абразивоструйной очистки деталей
KR840002298B1 (ko) * 1980-01-30 1984-12-15 웨스팅하우스일렉트릭 코오포레이숀 증기 발생기용 오염제거장치
WO1991014539A1 (en) * 1990-03-27 1991-10-03 Southwest Research Institute Robotic system for paint removal

Also Published As

Publication number Publication date
FR2686540B1 (fr) 1994-04-29
FR2686540A1 (fr) 1993-07-30
DE69304360D1 (de) 1996-10-10
DE69304360T2 (de) 1997-02-20
EP0554163A1 (de) 1993-08-04

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