EP0169092A1 - Abrasive-blasting device for work pieces of any shape using an orientable blast gun - Google Patents

Abrasive-blasting device for work pieces of any shape using an orientable blast gun Download PDF

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Publication number
EP0169092A1
EP0169092A1 EP85401077A EP85401077A EP0169092A1 EP 0169092 A1 EP0169092 A1 EP 0169092A1 EP 85401077 A EP85401077 A EP 85401077A EP 85401077 A EP85401077 A EP 85401077A EP 0169092 A1 EP0169092 A1 EP 0169092A1
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EP
European Patent Office
Prior art keywords
frame
curtain walls
vertical
guide path
installation according
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.)
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EP85401077A
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German (de)
French (fr)
Inventor
Francis Claude Grauss
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.)
Promecam Sisson Lehmann SA
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Promecam Sisson Lehmann SA
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Publication date
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Publication of EP0169092A1 publication Critical patent/EP0169092A1/en
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    • 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

Definitions

  • the present invention relates to a shot blasting installation, in particular for parts of any shape by means of an adjustable lance.
  • the frame carrying the support is in turn joined on its lateral sides to two other flexible curtains which roll up and also take place on axes, this time vertical, provided on the sides of the opening and which allow movement transverse of the chassis and consequently of the support which is associated therewith.
  • these movements in perpendicular directions, it is thus possible to bring the projection lance into any position in front of the opening of the enclosure.
  • these installations have the drawback of requiring flexible curtains which can be rolled up or unwound on axes depending on the positions of the lance support.
  • a shot blasting installation comprising a nacelle capable of receiving an operator and on which is mounted an adjustable lance capable of projecting a shot of shot, the operator being protected by a vertical wall pierced with a glass opening allowing you to check the work done.
  • the nacelle can be moved vertically on a support frame, while the projection lance is slidably mounted axially through the vertical wall of the nacelle, while being capable of being articulated thereon by means of a ball joint, an adjustable nozzle. being also provided at the end of this lance.
  • the parts to be shot-blasted are generally placed on a carriage in order to make them scroll over the entire length in the area swept by the spray lance. But under these conditions, the length of the parts to be treated must however be less than half the length of the blasting booth, while the arrangement of the parts to be shot blasted on a carriage implies ensuring a perfect wedging of these parts on it. However, these provisions raise difficulties, particularly in the case where the parts to be shot-blasted have a complex shape.
  • the present invention relates to a shot blasting installation of the type generally recalled above but designed so as to significantly increase the length of the scanning area of the spray lance in order to be able to clean relatively long parts without having to move on a cart.
  • the invention also aims to minimize the footprint of the installation.
  • the installation according to the invention for the shot peening of parts of any shape inside an enclosure by means of a mobile lance for projecting shot, mounted on a nacelle capable of receiving an operator and which is vertically movable on a frame, in which this frame is mounted movable in one direction or the other under the effect of a drive device along a first horizontal guide path, is characterized in that, on either side of the frame, two curtain walls with a metal structure are provided attached to the frame along their vertical sides also mounted movable along a second horizontal guide path, parallel to the first.
  • the two curtain walls are articulated so as to be able to curl, their guide path extending, in one direction or the other, beyond the ends of the guide path of the frame.
  • this lance is orientable by articulation in a ball joint carried by this wall, that it can slide axially through the latter and that it is also capable of turning on itself.
  • this lance carries at the end a projection nozzle 6 which is articulated as described in the main patent.
  • the nacelle 1 can slide vertically between the uprights 7 of the frame 2 and is suspended from a curtain 8 attached to a winding drum 9 whose shaft can be driven by a motor 10.
  • This curtain also extends below the nacelle 1 to close the space left free by the latter when it is in the raised position, the lower end of this curtain being wound on another drum provided at the base. of the frame 2.
  • the vertical wall 4 of the nacelle has an opening provided with a window 11 making it possible to control the orientation of the terminal nozzle of the lance and to monitor the working conditions.
  • the external face of this window is protected from shot rebounds by a turbine 12.
  • the vertical frame 2 is mounted movable along a horizontal guide path and comprises, on either side, two curtain walls designated by the general reference 13, these being attached to the corresponding vertical sides of this frame and also mounted movable along a horizontal guide path.
  • the vertical frame 2 is suspended from a horizontal beam 14 on which it is supported by means of two rollers 15, one of which can be driven in rotation by a motor 16 to serve as a means of driving this frame, in one direction or in the other, along the beam 14.
  • the latter is carried by uprights 17 bearing on the ground and which may be part of the chassis of this installation.
  • the frame 2 is supported on a guide profile 18 which can also form part of the frame of the assembly. This support is carried out by means of rollers 19.
  • the two curtain walls 13 are suspended from a horizontal rail 20 disposed at the level of the beam 14 and parallel thereto.
  • this rail is fixed to this beam by means of supports 21.
  • the ends 22 of this rail extend beyond the beam 14 and are bent inwards, as shown in FIG. 1 , so as to each constitute a kind of siding for the respective end of the corresponding curtain wall 13.
  • the ends of this rail are fixed on support arms 23 themselves carried by the beam 14.
  • the two curtain walls are engaged in a horizontal slide 24 which has the same shape as the upper rail 20.
  • Each of these curtain walls is constituted by a series of relatively narrow panels 25, arranged one after the other and which are articulated with one another along vertical axes.
  • each of the panels 25 is constituted by a closed metal box 26, on the inside, by a cladding plate 27 and which encloses a lining 28 for soundproofing.
  • the external face of each of these panels that is to say that facing the direction of projection of the shot, carries a shielding plate 29 intended to protect it from shot rebounds.
  • a joint cover 30 is also disposed on the external side at the location of the joint existing between two successive panels 25.
  • Each of these joints is made of elastic material and comprises, on the internal side, a tongue 31 fixed on the edge of one corresponding panels.
  • the plaques interior 27 have, on their vertical sides, flanges 32 and 33 nested one inside the other. The profile of these edges is such that they ensure the tightness of the corresponding curtain wall against a risk of passage of shot rebounds, while allowing the articulation of the panels with respect to each other for the curtain walls.
  • junction hinges 34a, 34b and 34c distributed over the height of the panels, for example three.
  • the axes 35 of the hinges 34a provided at the upper part, serve to ensure the suspension of the two curtain walls 13. Indeed, on each of these axes is articulated a yoke 36 carrying a roller 37 bearing on the rail 20 of suspension.
  • axis 38 of the hinges 34c As for the axis 38 of the hinges 34c, provided at the lower part, it extends downwards by a part carrying a roller 39 engaged inside the lower guide slide 24 (see FIG. 3).
  • the two curtain walls 13 are attached to the corresponding vertical uprights 7 of the frame 2 by means of two panels 40 which may have a structure similar to that of the panels 25.
  • these two curtain walls form, with the frame 2, an assembly which can be moved in one piece in the horizontal direction by sliding along the beam 14 and along the rail 20. This translational movement is controlled by the operator by operating the motor 16 in one direction or in the other. In such a case, one of the curtain walls is pushed by the frame 2, while the other is pulled by it.
  • the frame 2 can then be moved from one of the ends of the beam 14 to the other, between position 2a drawn in phantom on the left side of FIG. 1 and the symmetrical position on the right.
  • the curtain wall 13 located on the side of the end near which the frame 2 is placed, is wound on the corresponding curved end 22 of the rail 20 as well as on the respective end of the slide 24.
  • this is the case for the right curtain wall.
  • the curved ends of the rail 20 of the slide 24 constitute in some ways garage tracks reducing the size of the entire installation in the direction of the length.
  • the length of the curtain walls 13 obviously depends on the total length provided for the installation.
  • the upper rail 10 and the lower slide 14 therefore extend, beyond the ends of the beam 14, by curved portions whose length may be more or less important depending on the case.
  • the corresponding ends of this rail and this slide can be simply bent as provided in the attached drawing or be wound in a spiral to allow the curtain walls to be wound on themselves.
  • these curved ends can also constitute a sort of return path for the curtain walls, behind the zone of movement of the nacelle 1.
  • the translation of the assembly constituted by the frame 2 and the two curtain walls is controlled by the motor 16.
  • one or more additional motors can be provided to drive the curtain walls themselves.
  • the main advantage of the installation according to the invention lies in the fact that the mobile nacelle 1 carrying the projection lance can be moved not only in the vertical direction, but also in the horizontal direction. Under these conditions, this lance can sweep a very long zone corresponding to the length of the parts to be treated, which avoids the need to arrange these on carriages to make them pass in front of the projection lance.
  • the length of the installation can be more or less important depending on the length of the parts to be treated.
  • the installation according to the invention is not limited to the single embodiment described above because it is simply an example.
  • the curtain walls 13 could consist of continuous flexible elements comprising an abrasion-resistant surface on the side facing the blasting booth.
  • the installation chassis could be produced differently.
  • the mobile frame 2 instead of being suspended from a horizontal beam, the mobile frame 2 could rest on the ground by being mounted mobile on one or more guide rails.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

In the device, the movable blast gun is mounted on a platform which can receive the operator and which can move vertically on a vertical frame. In the present device, this vertical frame (2) is mounted movably along a horizontal guide path (14) and, on either side of this frame, there are provided two curtains (13) attached to its corresponding vertical sides, and also mounted so as to be able to move along a horizontal guide path (20) parallel to that guiding the frame (2) carrying the platform (1). A drive device is provided in order to ensure the displacement, in one or other direction, of the movable assembly thus formed. The guide path (20) for the curtain walls (13) is extended, beyond the ends of the guide path (14) of the vertical frame (2), by bent-back ends in order to form storage tracks for the curtain walls, when this movable assembly is displaced in one or other direction. <IMAGE>

Description

La présente invention concerne une installation de grenaillage, notamment pour pièces de formes quelconques au moyen d'une lance orientable.The present invention relates to a shot blasting installation, in particular for parts of any shape by means of an adjustable lance.

On connaît déjà par les brevets US-A-1.882.541 et US-A-2.953.876, des installations de sablage de pièces à l'intérieur d'une enceinte fermée, comprenant un support d'une lance de projection de sable, susceptible d'être déplacée devant une ouverture de l'enceinte selon deux directions perpendiculaires, respectivement horizontale et verticale. A cet effet, on a déjà prévu de monter le support coulissant selon la direction verticale par exemple sur un châssis, et de réunir les extrémités de ce support à deux rideaux souples qui s'enroulent ou se déroulent respectivement sur des axes horizontaux prévus aux extrémités supérieure et inférieure de l'ouverture de l'enceinte selon les déplacements du support. De même, le châssis portant le support est réuni à son tour sur ses côtés latéraux à deux autres rideaux souples qui s'enroulent et se déroulent également sur des axes cette fois verticaux, prévus sur les côtés de l'ouverture et qui permettent le déplacement transversal du châssis et par suite du support qui lui est associé. Par combinaison de ces mouvements selon les directions perpendiculaires, on peut ainsi amener la lance de projection dans n'importe quelle position devant l'ouverture de l'enceinte. Toutefois, ces installations présentent l'inconvénient de nécessiter des rideaux souples pouvant s'enrouler ou se dérouler sur des axes selon les positions du support de la lance. Or si ces dispositions peuvent convenir avec une installation de sablage où le matériau abrasif est finement divisé, il n'en va pas de même avec une installation de grenaillage où les pièces à nettoyer sont soumises à un jet puissant de billes métalliques très dures qui rebondissent sur elles et produiraient une détérioration rapide des rideaux souples des installations antérieures précitées.We already know from patents US-A-1,882,541 and US-A-2,953,876, installations for sandblasting parts inside a closed enclosure, comprising a support for a lance for sand projection, capable of being moved in front of an opening of the enclosure in two perpendicular directions, horizontal and vertical respectively. To this end, provision has already been made to mount the sliding support in the vertical direction, for example on a frame, and to bring the ends of this support together with two flexible curtains which roll up or take place respectively on horizontal axes provided at the ends. upper and lower of the enclosure opening according to the movements of the support. Similarly, the frame carrying the support is in turn joined on its lateral sides to two other flexible curtains which roll up and also take place on axes, this time vertical, provided on the sides of the opening and which allow movement transverse of the chassis and consequently of the support which is associated therewith. By combining these movements in perpendicular directions, it is thus possible to bring the projection lance into any position in front of the opening of the enclosure. However, these installations have the drawback of requiring flexible curtains which can be rolled up or unwound on axes depending on the positions of the lance support. However if these provisions can be suitable with a sandblasting installation where the abrasive material is finely divided, it is not the same with a blasting installation where the parts to be cleaned are subjected to a powerful jet of very hard metal balls which rebound on them and would produce a rapid deterioration of the flexible curtains of the above-mentioned earlier installations.

On connaît également par le FR-A-82 08646 une installation de grenaillage comprenant une nacelle pouvant recevoir un opérateur et sur laquelle est montée une lance orientable apte à projeter un jet de grenaille , l'opérateur étant protégé par une paroi verticale percée d'une ouverture vitrée permettant de contrôler le travail réalisé. La nacelle est déplaçable verticalement sur un bâti support cependant que la lance de projection est montée coulissante axialement à travers la paroi verticale de la nacelle, tout en étant susceptible de s'articuler sur celle-ci au moyen d'une rotule, une buse orientable étant par ailleurs prévue en bout de cette lance.Also known from FR-A-82 08646 is a shot blasting installation comprising a nacelle capable of receiving an operator and on which is mounted an adjustable lance capable of projecting a shot of shot, the operator being protected by a vertical wall pierced with a glass opening allowing you to check the work done. The nacelle can be moved vertically on a support frame, while the projection lance is slidably mounted axially through the vertical wall of the nacelle, while being capable of being articulated thereon by means of a ball joint, an adjustable nozzle. being also provided at the end of this lance.

Grâce à cet agencement, il est possible de réaliser un grenaillage de la quasi totalité de la surface de la pièce à grenailler même si cette dernière a une forme particulièrement complexe. En effet l'opérateur peut à la fois jouer sur la modification du niveau de la lance par déplacement vertical de la nacelle, sur le déplacement de l'extrémité de cette lance par rapport à la nacelle grâce à un mouvement de coulissement axial, sur l'orientation de la lance par articulation sur la paroi qui lui sert de support et enfin sur l'articulation de la buse terminale de projection par rapport au corps même de la lance. Ces divers réglages et adaptations sont encore complétés par le fait que la lance peut tourner sur elle-même en rotation.Thanks to this arrangement, it is possible to make a blasting of almost the entire surface of the part to be blasted even if the latter has a particularly complex shape. Indeed the operator can both play on the modification of the level of the lance by vertical displacement of the nacelle, on the displacement of the end of this lance relative to the nacelle by means of an axial sliding movement, on the orientation of the lance by articulation on the wall which serves as its support and finally on the articulation of the terminal projection nozzle relative to the body of the lance. These various adjustments and adaptations are further supplemented by the fact that the lance can rotate on itself in rotation.

Les pièces à grenailler sont généralement disposées sur un chariot afin de les faire défiler sur toute la longueur dans la zone balayée par la lance de projection. Mais dans ces conditions, la longueur des pièces à traiter doit être cependant inférieure à la moitié de la longueur de la cabine de grenaillage, tandis que la disposition des pièces à grenailler sur un chariot implique d'assurer un parfait calage de ces pièces sur celui-ci. Or ces dispositions soulèvent des difficultés notamment dans le cas où les pièces à grenailler présentent une forme complexe.The parts to be shot-blasted are generally placed on a carriage in order to make them scroll over the entire length in the area swept by the spray lance. But under these conditions, the length of the parts to be treated must however be less than half the length of the blasting booth, while the arrangement of the parts to be shot blasted on a carriage implies ensuring a perfect wedging of these parts on it. However, these provisions raise difficulties, particularly in the case where the parts to be shot-blasted have a complex shape.

La présente invention a pour objet une installation de grenaillage du genre généralement rappelé ci-dessus mais conçu de façon à accroître de manière importante la longueur de la zone de balayage de la lance de projection afin de pouvoir nettoyer des pièces relativement longues sans avoir à les déplacer sur un chariot. L'invention a également pour but de réduire au maximum l'encombrement au sol de l'installation.The present invention relates to a shot blasting installation of the type generally recalled above but designed so as to significantly increase the length of the scanning area of the spray lance in order to be able to clean relatively long parts without having to move on a cart. The invention also aims to minimize the footprint of the installation.

A cet effet l'installation selon l'invention, pour le grenaillage de pièces de formes quelconques à l'intérieur d'une enceinte au moyen d'une lance mobile de projection de grenaille, montée sur une nacelle pouvant recevoir un opérateur et qui est déplaçable verticalement sur un bâti, dans laquelle ce bâti est monté mobile dans un sens ou dans l'autre sous l'effet d'un dispositif d'entraînement le long d'un premier chemin de guidage horizontal, se caractérise en ce que, de part et d'autre du bâti , sont prévus deux murs rideaux à structure métallique attachés au bâti selon leurs côtés verticaux également montés mobiles le long d'un second chemin de guidage horizontal, parallèle au premier.To this end the installation according to the invention, for the shot peening of parts of any shape inside an enclosure by means of a mobile lance for projecting shot, mounted on a nacelle capable of receiving an operator and which is vertically movable on a frame, in which this frame is mounted movable in one direction or the other under the effect of a drive device along a first horizontal guide path, is characterized in that, on either side of the frame, two curtain walls with a metal structure are provided attached to the frame along their vertical sides also mounted movable along a second horizontal guide path, parallel to the first.

Selon une caractéristique particulière de l'invention, les deux murs rideaux sont articulés de façon à pouvoir s'incurver, leur chemin de guidage se prolongeant, dans un sens ou dans l'autre, au-delà des extrémités du chemin de guidage du bâti vertical , par des extrémités recourbées du pour côté opposé à l'enceinte de grenaillage/constituer des voies de garage des murs rideaux, afin de limiter l'encombrement de l'installation.According to a particular characteristic of the invention, the two curtain walls are articulated so as to be able to curl, their guide path extending, in one direction or the other, beyond the ends of the guide path of the frame. vertical, by curved ends of the for side opposite to the blasting enclosure / constitute garage tracks of the curtain walls, in order to limit the space requirement of the installation.

D'autres caractéristiques et avantages d'une installation de grenaillage établie conformément à l'invention apparaîtront encore à travers la description qui suit d'un exemple de réalisation donné à titre indicatif et non limitatif en référence aux dessins annexés sur lesquels :

  • La figure 1 est une vue en perspective d'une installation de grenaillage selon l'invention ;
  • Les figures 2 et 3 sont des vues partielles en coupe.transversale selon la ligne II-II de la figure 1, respectivement de la partie supérieure et de la partie inférieure de l'un des murs rideaux et des éléments servant de support et de guidage pour celui-ci ;
  • La figure 4 est une vue partielle en plan de dessus d'un mur rideau, avec un arrachement correspondant à un plan horizontal de coupe selon la ligne IV-IV de la figure 3 ;
  • La figure 5 est une vue en perspective et en coupe de deux panneaux successifs de l'un des murs rideaux. L'installation représentée comporte une nacelle
    • 1 montée mobile, dans le sens vertical, sur un bâti-support
    • 2. Cette nacelle possède une plateforme horizontale 3 destinée à supporter l'opérateur et elle comporte une paroi verticale
    • 4 traversée par une lance de projection 5.
Other characteristics and advantages of a shot blasting installation established in accordance with the invention will become more apparent from the following description of an exemplary embodiment given by way of non-limiting example with reference to the appended drawings in which:
  • Figure 1 is a perspective view of a shot blasting installation according to the invention;
  • Figures 2 and 3 are partial cross-sectional views along line II-II of Figure 1, respectively of the upper part and the lower part of one of the curtain walls and elements serving as support and guide for this one;
  • Figure 4 is a partial top plan view of a curtain wall, with a cutaway corresponding to a horizontal plane of section along the line IV-IV of Figure 3;
  • Figure 5 is a perspective view in section of two successive panels of one of the curtain walls. The installation shown includes a nacelle
    • 1 mobile mounting, vertically, on a support frame
    • 2. This nacelle has a horizontal platform 3 intended to support the operator and it has a vertical wall
    • 4 crossed by a projection lance 5.

A ce sujet il n'y a pas lieu d'exposer en détail le mode de montage de cette lance dans cette paroi, car celui-ci est déjà décrit dans le brevet principal. Il suffit donc de rappeler que cette lance est orientable par articulation dans une rotule portée par cette paroi, qu'elle peut coulisser axialement à travers celle-ci et qu'elle est également susceptible de tourner sur elle-même. De plus cette lance porte en bout une buse 6 de projection qui est articulée de la façon décrite dans le brevet principal.On this subject there is no need to explain in detail the method of mounting this lance in this wall, since it is already described in the main patent. It is therefore sufficient to recall that this lance is orientable by articulation in a ball joint carried by this wall, that it can slide axially through the latter and that it is also capable of turning on itself. In addition, this lance carries at the end a projection nozzle 6 which is articulated as described in the main patent.

La nacelle 1 peut coulisser verticalement entre les montants 7 du bâti 2 et est suspendue à un rideau 8 attaché à un tambour d'enroulement 9 dont l'arbre peut être entraîné par un moteur 10. Ainsi le relèvement de cette nacelle est commandé par enroulement du rideau 8 sur le tambour 9, cependant que sa descente est obtenue par déroulement de ce rideau. Ce rideau s'étend également au-dessous de la nacelle 1 pour fermer l'espace laissé libre par celle-ci lorsqu'elle est en position relevée, l'extrémité inférieure de ce rideau s'enroulant sur un autre tambour prévu à la base du bâti 2.The nacelle 1 can slide vertically between the uprights 7 of the frame 2 and is suspended from a curtain 8 attached to a winding drum 9 whose shaft can be driven by a motor 10. Thus the lifting of this nacelle is controlled by winding of the curtain 8 on the drum 9, while its descent is obtained by unwinding of this curtain. This curtain also extends below the nacelle 1 to close the space left free by the latter when it is in the raised position, the lower end of this curtain being wound on another drum provided at the base. of the frame 2.

Dans sa partie supérieure la paroi verticale 4 de la nacelle comporte une ouverture pourvue d'une vitre 11 permettant de contrôler l'orientation de la buse terminale de la lance et de surveiller les conditions de travail. La face externe de cette vitre est protégée des rebonds de grenaille par une turbine 12.In its upper part, the vertical wall 4 of the nacelle has an opening provided with a window 11 making it possible to control the orientation of the terminal nozzle of the lance and to monitor the working conditions. The external face of this window is protected from shot rebounds by a turbine 12.

Selon l'invention, le bâti vertical 2 est monté mobile le long d'un chemin de guidage horizontal et comporte, de part et d'autre, deux murs rideaux désignés par la référence générale 13, ceux-ci étant attachés aux côtés verticaux correspondants de ce bâti et également montés mobiles le long d'un chemin de guidage horizontal.According to the invention, the vertical frame 2 is mounted movable along a horizontal guide path and comprises, on either side, two curtain walls designated by the general reference 13, these being attached to the corresponding vertical sides of this frame and also mounted movable along a horizontal guide path.

Ainsi dans l'exemple de réalisation représenté, le bâti vertical 2 est suspendu à une poutre horizontale 14 sur laquelle elle prend appui par l'intermédiaire de deux galets de roulement 15, l'un de ceux-ci pouvant être entraîné en rotation par un moteur 16 pour servir de moyen d'entraînement de ce bâti, dans un sens ou dans, l'autre, le long de la poutre 14. Celle-ci est portée par des montants 17 prenant appui au sol et qui peuvent faire partie du châssis d'ensemble de la présente installation.Thus in the embodiment shown, the vertical frame 2 is suspended from a horizontal beam 14 on which it is supported by means of two rollers 15, one of which can be driven in rotation by a motor 16 to serve as a means of driving this frame, in one direction or in the other, along the beam 14. The latter is carried by uprights 17 bearing on the ground and which may be part of the chassis of this installation.

A sa partie inférieure le bâti 2 prend appui sur un profilé 18 de guidage pouvant également faire partie du châssis de l'ensemble. Cet appui s'effectue par l'intermédiaire de galets 19.At its lower part, the frame 2 is supported on a guide profile 18 which can also form part of the frame of the assembly. This support is carried out by means of rollers 19.

Les deux murs rideaux 13 sont suspendus à un rail horizontal 20 disposé au niveau de la poutre 14 et parallèle à celle-ci. Dans le cas représenté, ce rail est fixé sur cette poutre par l'intermédiaire de supports 21. Cependant les extrémités 22 de ce rail se prolongent au-delà de la poutre 14 et sont recourbées vers l'intérieur, comme représenté sur la figure 1, de façon à constituer chacune une sorte de voie de garage pour l'extrémité respective du mur rideau 13 correspondant. A cet effet les extrémités de ce rail sont fixées sur des bras support 23 eux-mêmes portés par la poutre 14. A leur partie inférieure les deux murs rideaux sont engagés dans une glissière horizontale 24 qui présente la même forme que le rail supérieur 20.The two curtain walls 13 are suspended from a horizontal rail 20 disposed at the level of the beam 14 and parallel thereto. In the case shown, this rail is fixed to this beam by means of supports 21. However the ends 22 of this rail extend beyond the beam 14 and are bent inwards, as shown in FIG. 1 , so as to each constitute a kind of siding for the respective end of the corresponding curtain wall 13. To this end, the ends of this rail are fixed on support arms 23 themselves carried by the beam 14. At their lower part, the two curtain walls are engaged in a horizontal slide 24 which has the same shape as the upper rail 20.

Chacun de ces murs rideaux est constitué par une série de panneaux 25, relativement étroits, disposés les uns à la suite des autres et qui s'articulent entre eux selon des axes verticaux. Comme représenté sur les figures 4 et 5, chacun des panneaux 25 est constitué par un caisson métallique 26 fermé, du côté intérieur, par une plaque 27 de bardage et qui renferme une garniture 28 d'insonorisation. La face externe de chacun de ces panneaux, c'est-à-dire celle tournée vers la direction de projection de la grenaille, porte une plaque 29 de blindage destinée à la protéger des rebonds de grenaille.Each of these curtain walls is constituted by a series of relatively narrow panels 25, arranged one after the other and which are articulated with one another along vertical axes. As shown in Figures 4 and 5, each of the panels 25 is constituted by a closed metal box 26, on the inside, by a cladding plate 27 and which encloses a lining 28 for soundproofing. The external face of each of these panels, that is to say that facing the direction of projection of the shot, carries a shielding plate 29 intended to protect it from shot rebounds.

Un couvre joint 30 est également disposé du côté externe à l'endroit du joint existant entre deux panneaux successifs 25. Chacun de ces joints est réalisé en matière élastique et comporte, du côté interne, une languette 31 fixée sur le chant de l'un des panneaux correspondants. Les plaques intérieures 27 présentent, sur leurs côtés verticaux, des rebords 32 et 33 emboîtés les uns dans les autres. Le profil de ces rebords est tel que ceux-ci assurent l'étanchéité du mur rideau correspondant à l'encontre d'un risque de passage des rebonds de grenaille, tout en permettant l'articulation des panneaux les uns par rapport aux autres pour l'incurvement des murs rideaux.A joint cover 30 is also disposed on the external side at the location of the joint existing between two successive panels 25. Each of these joints is made of elastic material and comprises, on the internal side, a tongue 31 fixed on the edge of one corresponding panels. The plaques interior 27 have, on their vertical sides, flanges 32 and 33 nested one inside the other. The profile of these edges is such that they ensure the tightness of the corresponding curtain wall against a risk of passage of shot rebounds, while allowing the articulation of the panels with respect to each other for the curtain walls.

Cette articulation est assurée au moyen d'un certain nombre de charnières de jonction 34a, 34b et 34c réparties sur la hauteur des panneaux, par exemple trois. De plus, ainsi qu'il apparaît sur la figure 2, les axes 35 des charnières 34a, prévues à la partie supérieure, servent à assurer la suspension des deux murs rideaux 13. En effet sur chacun de ces axes s'articule une chape 36 portant un galet 37 prenant appui sur le rail 20 de suspension.This articulation is ensured by means of a number of junction hinges 34a, 34b and 34c distributed over the height of the panels, for example three. In addition, as it appears in FIG. 2, the axes 35 of the hinges 34a, provided at the upper part, serve to ensure the suspension of the two curtain walls 13. Indeed, on each of these axes is articulated a yoke 36 carrying a roller 37 bearing on the rail 20 of suspension.

Quant à l'axe 38 des charnières 34c, prévues à la partie inférieure, il se prolonge vers le bas par une partie portant une roulette 39 engagée à l'intérieur de la glissière inférieure 24 de guidage (voir figure 3).As for the axis 38 of the hinges 34c, provided at the lower part, it extends downwards by a part carrying a roller 39 engaged inside the lower guide slide 24 (see FIG. 3).

Les deux murs rideaux 13 sont attachés aux montants verticaux correspondants 7 du bâti 2 par l'intermédiaire de deux panneaux 40 pouvant avoir une structure similaire à celle des panneaux 25. Ainsi ces deux murs rideaux forment, avec le bâti 2, un ensemble qui peut être déplacé d'un seul tenant dans le sens horizontal par coulissement le long de la poutre 14 et le long du rail 20. Ce mouvement de translation est commandé par l'opérateur par mise en fonctionnement du moteur 16 dans un sens ou dans l'autre. Dans un tel cas l'un des murs rideaux se trouve poussé par le bâti 2, tandis que l'autre est tiré par celui-ci.The two curtain walls 13 are attached to the corresponding vertical uprights 7 of the frame 2 by means of two panels 40 which may have a structure similar to that of the panels 25. Thus these two curtain walls form, with the frame 2, an assembly which can be moved in one piece in the horizontal direction by sliding along the beam 14 and along the rail 20. This translational movement is controlled by the operator by operating the motor 16 in one direction or in the other. In such a case, one of the curtain walls is pushed by the frame 2, while the other is pulled by it.

Le bâti 2 peut alors être déplacé de l'une des extrémités de la poutre 14 à l'autre, entre la position 2a dessinée en traits mixtes sur le côté gauche de la figure 1 et la position symétrique à droite. Dans chacune de ces positions extrêmes le mur rideau 13, situé du côté de l'extrémité près de laquelle est placé le bâti 2, est enroulé sur l'extrémité incurvée correspondante 22 du rail 20 ainsi que sur l'extrémité respective de la glissière 24. Sur la figure 1 ceci est le cas pour le mur rideau de droite. Ainsi les extrémités recourbées du rail 20 de la glissière 24 constituent en quelque sorte des voies de garage réduisant l'encombrement de l'ensemble de l'installation dans le sens de la longueur.The frame 2 can then be moved from one of the ends of the beam 14 to the other, between position 2a drawn in phantom on the left side of FIG. 1 and the symmetrical position on the right. In each of these positions extremes the curtain wall 13, located on the side of the end near which the frame 2 is placed, is wound on the corresponding curved end 22 of the rail 20 as well as on the respective end of the slide 24. In FIG. 1 this is the case for the right curtain wall. Thus the curved ends of the rail 20 of the slide 24 constitute in some ways garage tracks reducing the size of the entire installation in the direction of the length.

A ce sujet il convient de noter que le coulissement des deux murs rideaux 13 sur ces voies recourbées de garage est rendu possible par le fait que ces murs rideaux peuvent s'incurver sur leur face tournée vers l'intérieur. Ceci résulte de la réalisation de ces murs rideaux au moyen des panneaux étroits 25 articulés les uns à la suite des autres et au fait que les chapes 36, portant les galets de suspension de ces panneaux, peuvent librement pivoter autour des axes 35 leur servant de support.In this regard, it should be noted that the sliding of the two curtain walls 13 on these curved garage tracks is made possible by the fact that these curtain walls can curve on their face facing inwards. This results from the realization of these curtain walls by means of the narrow panels 25 articulated one after the other and the fact that the yokes 36, carrying the rollers for hanging these panels, can freely pivot around the axes 35 serving them support.

La longueur des murs rideaux 13 dépend évidemment de la longueur totale prévue pour l'installation. Le rail supérieur 10 et la glissière inférieure 14 se prolongent donc, au-delà des extrémités de la poutre 14, par des parties recourbées dont la longueur peut être plus ou moins importante selon les cas. Les extrémités correspondantes de ce rail et de cette glissière peuvent être simplement recourbées comme prévu sur le dessin annexé ou être enroulées en spirale pour permettre l'enroulement des murs rideaux sur eux-mêmes. Cependant ces extrémités recourbées peuvent également constituer une sorte de chemin de retour pour les murs rideaux, derrière la zone de déplacement de la nacelle 1.The length of the curtain walls 13 obviously depends on the total length provided for the installation. The upper rail 10 and the lower slide 14 therefore extend, beyond the ends of the beam 14, by curved portions whose length may be more or less important depending on the case. The corresponding ends of this rail and this slide can be simply bent as provided in the attached drawing or be wound in a spiral to allow the curtain walls to be wound on themselves. However, these curved ends can also constitute a sort of return path for the curtain walls, behind the zone of movement of the nacelle 1.

Comme déjà indiqué, la translation de l'ensemble constitué par le bâti 2 et les deux murs rideaux, est commandée par le moteur 16. Cependant, dans le cas d'une installation de très grande longueur, il peut être prévu un ou plusieurs moteurs supplémentaires assurant l'entraînement des murs rideaux eux-mêmes.As already indicated, the translation of the assembly constituted by the frame 2 and the two curtain walls is controlled by the motor 16. However, in the case of an installation of very long, one or more additional motors can be provided to drive the curtain walls themselves.

Le principal avantage de l'installation selon l'invention réside dans le fait que la nacelle mobile 1 portant la lance de projection peut être déplacée non seulement dans le sens vertical, mais également dans le sens horizontal. Dans ces conditions cette lance peut balayer une zone de grande longueur correspondant à la longueur des pièces à traiter, ce qui évite la nécessité de disposer celles-ci sur des chariots pour les faire défiler devant la lance de projection. Bien entendu la longueur de l'installation peut être plus ou moins importante suivant le longueur des pièces à traiter.The main advantage of the installation according to the invention lies in the fact that the mobile nacelle 1 carrying the projection lance can be moved not only in the vertical direction, but also in the horizontal direction. Under these conditions, this lance can sweep a very long zone corresponding to the length of the parts to be treated, which avoids the need to arrange these on carriages to make them pass in front of the projection lance. Of course the length of the installation can be more or less important depending on the length of the parts to be treated.

Dans le cas du grenaillage d'une série de pièces identiques, ou d'une série de pièces importantes, il est possible de prévoir la programmation des déplacements horizontaux du bâti 2 et des déplacements verticaux de la nacelle 1 suivant un cycle déterminé. Dans un tel cas il est possible de prévoir par ailleurs un manipulateur mécanisé pour imprimer à la lance les divers mouvements successifs nécessaires et ce, selon une programmation qui peut alors être combinée avec celle des déplacements horizontaux et verticaux de la nacelle. Ceci permet donc de transformer la présente installation en une sorte de robot de grenaillage.In the case of shot peening of a series of identical parts, or of a series of large parts, it is possible to provide for the programming of the horizontal movements of the frame 2 and the vertical movements of the nacelle 1 according to a determined cycle. In such a case, it is also possible to provide a mechanized manipulator for printing with the lance the various successive movements necessary, according to a programming which can then be combined with that of the horizontal and vertical movements of the nacelle. This therefore makes it possible to transform the present installation into a sort of blasting robot.

Les étanchéités nécessaires en partie basse et en partie haute, de part et d'autre des murs rideaux, sont assurées par des tôles disposées en chicane. A ce sujet il convient de rappeler que la structure particulière des panneaux articulés constituant ces murs rideaux assure également l'étanchéité voulue pour éviter le passage de rebonds de grenaille. De plus la structure de ces panneaux a l'avantage d'assurer l'insonorisation nécessaire grâce à la garniture isolante 28 prévue à l'intérieur des caissons 26.The watertightness required in the lower part and in the upper part, on either side of the curtain walls, is ensured by sheets arranged in a baffle. In this regard, it should be recalled that the particular structure of the hinged panels constituting these curtain walls also provides the desired seal to avoid the passage of shot bounces. In addition, the structure of these panels has the advantage of ensuring the necessary soundproofing thanks to the insulating lining 28 provided inside the boxes 26.

Cependant l'installation selon l'invention n'est pas limitée à la seule forme de réalisation décrite ci-dessus car celle-ci constitue simplement un exemple. Ainsi, au lieu d'être constitués par une série de lattes ou panneaux articulés, les murs rideaux 13 pourraient consister en des éléments flexibles continus comportant une surface résistant à l'abrasion du côté tourné vers la cabine de grenaillage. Pour sa part le châssis de l'installation pourrait être réalisé différemment. Du reste au lieu d'être suspendu à une poutre horizontale, le bâti mobile 2 pourrait prendre appui sur le sol en étant monté mobile sur un ou plusieurs rails de guidage.However, the installation according to the invention is not limited to the single embodiment described above because it is simply an example. Thus, instead of being constituted by a series of hinged slats or panels, the curtain walls 13 could consist of continuous flexible elements comprising an abrasion-resistant surface on the side facing the blasting booth. For its part, the installation chassis could be produced differently. Moreover, instead of being suspended from a horizontal beam, the mobile frame 2 could rest on the ground by being mounted mobile on one or more guide rails.

Claims (9)

1. Installation pour le grenaillage de pièces de formes quelconques à l'intérieur d'une enceinte au moyen d'une lance mobile de projection de grenaille, montée sur une nacelle pouvant recevoir un opérateur et qui est déplaçable verticalement sur un bâti, dans laquelle ce bâti (2) est monté mobile dans un sens ou dans l'autre sous l'effet d'un dispositif d'entraînement le long d'un premier chemin de guidage horizontal, caractérisée en ce que, de part et d'autre du bâti (2), sont prévus deux murs rideaux à structure métallique (13), attachés au bâti selon leurs côtés verticaux et également montés mobiles le long d'un second chemin de guidage horizontal parallèle au premier.1. Installation for the shot peening of parts of any shape inside an enclosure by means of a mobile lance for projecting shot, mounted on a nacelle capable of receiving an operator and which is vertically movable on a frame, in which this frame (2) is mounted movable in one direction or the other under the effect of a drive device along a first horizontal guide path, characterized in that, on either side of the frame (2), two curtain walls with a metallic structure (13) are provided, attached to the frame according to their vertical sides and also mounted movable along a second horizontal guide path parallel to the first. 2. Installation selon la revendication 1 caractérisée en ce que les deux murs rideaux (13) sont articulés de façon à pouvoir s'incurver et en ce que leur chemin de guidage se prolonge, dans un sens ou dans l'autre, au-delà des extrémités du chemin de guidage du bâti vertical (2), par des extrémités recourbées du côté opposé à l'enceinte de grenaillage pour constituer des voies de garage des murs rideaux, afin de limiter l'encombrement de l'installation.2. Installation according to claim 1 characterized in that the two curtain walls (13) are articulated so as to be able to curve and in that their guide path extends, in one direction or the other, beyond ends of the guide path of the vertical frame (2), by curved ends on the side opposite to the blasting enclosure to form garage tracks of the curtain walls, in order to limit the size of the installation. 3. Installation selon la revendication 2, caractérisée en ce que chaque mur rideau (13) est constitué par une série de lattes verticales ou panneaux verticaux (25) relativement étroits, articulés les uns à la suite des autres et qui sont suspendus, par l'intermédiaire de galets de roulement (37), à un rail horizontal supérieur (20) constituant leur chemin horizontal de guidage.3. Installation according to claim 2, characterized in that each curtain wall (13) consists of a series of vertical slats or vertical panels (25) relatively narrow, articulated one after the other and which are suspended, by the 'intermediate rollers (37) to an upper horizontal rail (20) constituting their horizontal guide path. 4. Installation selon la revendication 3, caractérisée en ce que le bord inférieur des deux murs rideaux (13) est engagé dans une glissière horizontale de guidage (24) parallèle au rail supérieur (20).4. Installation according to claim 3, characterized in that the lower edge of the two curtain walls (13) is engaged in a horizontal guide slide (24) parallel to the upper rail (20). 5. Installation selon l'une des revendications 3 et 4, caractérisée en ce que les lattes ou panneaux articulés (25) des deux murs rideaux sont constitués chacun par un caisson métallique (26) dont la face tournée du côté de la projection de grenaille porte une plaque de blindage (29), cependant que les côtés verticaux de sa face opposée (27) comportent des rebords de recouvrement (32, 33) aptes à permettre l'incurvement de chaque mur rideau sur sa face correspondante.5. Installation according to one of claims 3 and 4, characterized in that the slats or articulated panels (25) of the two curtain walls each consist of a metal box (26) whose face turned towards the side of the shot projection carries a shielding plate (29), while the vertical sides of its opposite face (27) have overlapping edges (32, 33) capable of allowing the curving of each curtain wall on its corresponding face. 6. Installation selon la revendication 5, caractérisée en ce que, sur leur face tournée vers la direction de projection de grenaille, les murs rideaux comportent une série de couvre-joints (30) en matière élastique disposés à l'endroit des intervalles entre les divers panneaux verticaux successifs (25).6. Installation according to claim 5, characterized in that, on their face turned towards the shot projection direction, the curtain walls comprise a series of joint covers (30) of elastic material arranged at the locations of the intervals between the various successive vertical panels (25). 7. Installation selon l'une des revendications précédentes, caractérisée en ce que le chemin de guidage horizontal du bâti vertical (2) portant la nacelle (1) consiste en une poutre horizontale (14) à laquelle celui-ci est suspendu par l'intermédiaire de galets de roulement (15), la partie inférieure de ce bâti prenant appui, par l'intermédiaire de galets, sur un profilé (18) de guidage.7. Installation according to one of the preceding claims, characterized in that the horizontal guide path of the vertical frame (2) carrying the nacelle (1) consists of a horizontal beam (14) to which the latter is suspended by the intermediate rollers (15), the lower part of this frame bearing, by means of rollers, on a profile (18) guide. 8. Installation selon la revendication 8, caractérisée en ce que l'entraînement, en translation horizontale, du bâti vertical (2) et des murs rideaux (13) attaché à celui-ci est assuré par un galet moteur (15) placé au contact de la poutre (14) à laquelle ce bâti est suspendu.8. Installation according to claim 8, characterized in that the drive, in horizontal translation, of the vertical frame (2) and curtain walls (13) attached thereto is provided by a drive roller (15) placed in contact of the beam (14) to which this frame is suspended. 9. Installation selon l'une des revendications 1 à 6, caractérisée en ce que le bâti mobile (2) portant la nacelle (1) prend appui sur le sol en étant monté mobile sur un ou plusieurs rails de guidage.9. Installation according to one of claims 1 to 6, characterized in that the movable frame (2) carrying the nacelle (1) bears on the ground by being movably mounted on one or more guide rails.
EP85401077A 1984-06-19 1985-05-31 Abrasive-blasting device for work pieces of any shape using an orientable blast gun Withdrawn EP0169092A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8409548A FR2565878A2 (en) 1984-06-19 1984-06-19 STACKING PLANT OF ANY SHAPED PIECES BY MEANS OF AN ORIENTABLE LANCE
FR8409548 1984-06-19

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EP0169092A1 true EP0169092A1 (en) 1986-01-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0291707A2 (en) * 1987-05-16 1988-11-23 FRIEDRICH GOLDMANN GMBH &amp; CO. Sandblast cabinet
FR2630674A1 (en) * 1988-04-27 1989-11-03 Snecma Device for acoustic insulation of the operational openings of an enclosure, particularly a sand-blasting machine
CN102632463A (en) * 2012-04-27 2012-08-15 无锡中盈实业有限公司 Multi-functional large-sized metal surface treating machine
CN114260832A (en) * 2021-12-29 2022-04-01 山东华中重钢有限公司 Shot blasting machine with function of preventing shot from jumping out of shot blasting chamber

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19754624A1 (en) * 1997-12-09 1999-06-10 Kueba Kaeltetechnik Gmbh Work cabin for manually finishing workpieces
CN108436792B (en) * 2018-05-17 2023-08-25 东莞吉川机械科技股份有限公司 Material driving mechanism for sand blasting machine

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US1882541A (en) * 1929-12-23 1932-10-11 James William Ball Sand blast apparatus
US2953876A (en) * 1958-11-05 1960-09-27 Edna I Zieber Automatic blasting control
US3436866A (en) * 1967-10-23 1969-04-08 Will Burt Co The Automatic sandblast machine
US3863393A (en) * 1972-03-13 1975-02-04 Nelson Robert J Apparatus for supporting work means on vertically disposed surface
CH576874A5 (en) * 1974-02-08 1976-06-30 Zug Verzinkerei Ag Surface decoration applying blasting machine - varies decoration shading by varying blasting time and density and agent

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1882541A (en) * 1929-12-23 1932-10-11 James William Ball Sand blast apparatus
US2953876A (en) * 1958-11-05 1960-09-27 Edna I Zieber Automatic blasting control
US3436866A (en) * 1967-10-23 1969-04-08 Will Burt Co The Automatic sandblast machine
US3863393A (en) * 1972-03-13 1975-02-04 Nelson Robert J Apparatus for supporting work means on vertically disposed surface
CH576874A5 (en) * 1974-02-08 1976-06-30 Zug Verzinkerei Ag Surface decoration applying blasting machine - varies decoration shading by varying blasting time and density and agent

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0291707A2 (en) * 1987-05-16 1988-11-23 FRIEDRICH GOLDMANN GMBH &amp; CO. Sandblast cabinet
EP0291707A3 (en) * 1987-05-16 1990-03-14 Goldmann Friedrich Gmbh & Co Sandblast cabinet
FR2630674A1 (en) * 1988-04-27 1989-11-03 Snecma Device for acoustic insulation of the operational openings of an enclosure, particularly a sand-blasting machine
CN102632463A (en) * 2012-04-27 2012-08-15 无锡中盈实业有限公司 Multi-functional large-sized metal surface treating machine
CN114260832A (en) * 2021-12-29 2022-04-01 山东华中重钢有限公司 Shot blasting machine with function of preventing shot from jumping out of shot blasting chamber

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