CH346128A

CH346128A - Apparatus for sandblasting

Info

Publication number: CH346128A
Authority: CH
Inventors: Steffen Robert
Original assignee: Brack Walter F
Priority date: 1958-09-24
Filing date: 1958-09-24
Publication date: 1960-04-30

Description

A ppareil pour le sablage -,kp La pr6sente invention a pour objet un appareil pour le sablage, comprenant une buse de projection pour du sable et de, Fair comprim#, entour6e d'une enveloppe qui Präsente une ouverture permettant au sable d'atteindre la surface ä sabler et dans laquelle & bouche un, conduit pour Pbacuation du sable etde Fair apr#s leur utilisation, une garniture assurant l'6tanch#it# entre ladite enveloppe et la surface ä sabler, ladite garniture d'#tanch8it# 6tant soumise ä Faction d'un, m & anisme qui lui imprime un mouve- ment rotatif osciUant destin# ä faciliter ses d#place- ments sur la surface ä sabler. A device for sandblasting -,kp The subject of the present invention is a device for sandblasting, comprising a projection nozzle for sand and, fairly compressed, surrounded by a casing which has a opening allowing the sand to reach the ä surface to be sanded and in which & plugs a conduit for the disposal of the sand and ä Fair after their use, a gasket ensuring the '6tanch#it# between the said envelope and the surface ä to sand, the said #tanch8it# lining being subjected ä to a, m & anism which imparts a Oscillating rotary movement intended ä to make it easier to move on the ä sanding surface.

Cet appareil est caract6ris6 par le fait que ladite garniture d'#tanch#it6 est constitu#e par un manchon en, mati#re souple et compressible, dans Veaisseur duquel est pratiqu6e, sur une partie de sa hauteur, une gorge annulaire m#nageant ainsi deux l#vres, Pune int6rieure, se fixant ä ladite enveloppe, et l'au- tre, ext#ricure, solidaire d'une pike annulaire d'en- trainement anim & d7un mouvement rotatif oseiHant. This device is characterized by the fact that said #tanch#it6 gasket is constituted by a sleeve made of flexible and compressible material, in the thickness of which is formed, over part of its height, an annular groove m# thus swimming two lips, an inner one, attaching itself to the said envelope, and the other, outer, secured to an annular driving pike animated by a rotary movement dareHant.

Le dessin repr#sente, ä titre d'exemple, une, forme d'exdcution de Pobjet de Finvention et une variante. La fig. 1 en est une coupe axiale. The drawing represents, ä by way of example, one form of execution of the object of the invention and a variant. fig. 1 is an axial section.

La fig. 2 est une, vue en 616vation, avee coupe partielle, d'un däail Junc variante. fig. 2 is a 616 vation view, partially sectioned, of a variant Daail Junc.

Uappareil repr6sent# comprend un carter ou. enveloppe tubulaire 1 portant une buse 2 destin6e ä projeter un m#Iange d'air comprim6 et de sable sur la surface ä sabler d6signde par3. L'extr6mit6 ant#- rieure de Fenveloppe tubulaire est munie d'une gar- niture annulaire, d'#tanch6it# 4, en une mati#re souple et compressible, qui empZehe que le sable projet# sur la surface 3 par Fouverture centrale 5 ne s'6chappe lat#ralement. La partie post#rieure de Ven- veloppe tubulaire 1 se prolonge par un conduit d'6va- cuation 6 du m#Iange d'air et de sable apr#h son utilisation. Cette 6vacuation est assur6e par simple refoulement, sans que Pappareil ait ä 8tre reli6 ä aucune installation d'aspiration. La buse 2 est viss6e sur Fenveloppe 1 et peut ainsi etre r6g16e en hau- teur; elle est en outre interchangeable. The apparatus represented # comprises a housing or. tubular casing 1 carrying a nozzle 2 intended ä to project a mixture of compressed air and sand onto the sanding surface ä denoted by 3. The front end of the tubular casing is provided with an annular gasket, #4 tightness, in a flexible and compressible material, which prevents the sand from projecting # on the surface 3 through the central opening 5 does not escape laterally. The posterior part of the tubular envelope 1 is extended by an evacuation conduit 6 for the mixture of air and sand after its use. This evacuation is ensured by simple discharge, without the appliance having ä to be connected ä to any suction installation. The nozzle 2 is screwed onto the casing 1 and can thus be adjusted in height; it is also interchangeable.

La garniture d'6tanch6it6 4, en forme de man- chon, pr6sente, sur Unke partie de sa hauteur, une gorge annulaire 7 m6nageant deux l#vres 4aet 4b. L'extr#mit6 ant6rieure la de Fenveloppe 1 est engag#e dans la gorge, 7 et adh#re ä la l#vre int6- rieure 4ade la garniture d'#tanch6it6, ce qui assure Passemblage de cette derni#re ä l'enveloppe. La Mvre ext6rieure 4b est perc6e de trous axiaux 8 dans les- quels p#n#trent des. t6tons 9 solidaires d'une bague 10 mont & rotativement autour de Penveloppe 1 et main- tenue, en place par un circlips 11. Cette bague est anim6e d#un mouvement altematif oseillant que lui imprime un excentrique 12 command6 par une tur- bine ä air 13. Cet excentrique 12 est engag6 entre les deux branches 10a d'une fourche constitu6e par une. oreille de la bague 10. Ainsi, la gamiture d'6tanch6it6 4 est en partie anim6e- d'un mouvement rotatif oseillant, rendu possible par son 61asticit6, mouvement qui facilite son d6placement sur la sur- face ä sabler 3. The seal 4, in the form of a sleeve, has, over one part of its height, an annular groove 7 forming two lips 4aand 4b. The extremity anterior to the of the envelope 1 is engaged in the groove, 7 and adheres ä the inner lip 4aof the sealing gasket, which ensures the assembly of this latter ä the 'envelope. The outer shell 4b is pierced with axial holes 8 into which holes penetrate. studs 9 secured to a ring 10 mounted & rotating around the casing 1 and held in place by a circlip 11 . This ring is animated by a daring alternating movement imparted to it by an eccentric 12 controlled by an air ä turbine 13. This eccentric 12 is engaged between the two branches 10a of a fork constitu6e by a. lug of the ring 10. Thus, the sealing gasket 4 is partly driven by a wobbly rotary movement, made possible by its elasticity, a movement which facilitates its movement on the surface ä sand 3.

Enfin, l'extr6mit6 de la garniture 4 est munie d'une pi#ce annulaire 14, 6galement en une mati#re. souple et compressible, mais plus tendre que la mati#re de la garniture. Cette pike annulaire est colke ä la garniture ä chaud, lors du moulage de cette derni#re. Elle pr6sente une l#vre annulaire, 14a s'6tendant radIalement vers l'i-nt6rieur, destin6e ä s'appliquer 6troitement contre la surface ä sabler 3. Dans la variante de la fig. 2, la pike annulaire, torminale de la gamiture d!6tanch6it6, d6siga6e, par 15, est fix6e ä la gamiture 16 de fagon amovible. A cet effet, cette pike annulaire, pr6sente une s6rie de trous borgnes 17 dans lesquels p6n#trent des t6tons 16a de la gamiture 16. Gräce ä cette dispo- sition, la pike annulaire terminale, qui s'use plus rapidement que le reste de la gamiture, peut 8tre remplac.6e ind6pendamment de cette derni#re. Finally, the end of the gasket 4 is provided with an annular part 14, also in one material. flexible and compressible, but softer than the material of the filling. This annular pike is colke ä the hot trim ä, during the molding ä of the latter. It has an annular lip, 14a extending radially inwards, intended ä to press closely against the surface ä to be sanded 3. In the variant of fig. 2, the annular pike, torminal of the sealing gasket, designated by 15, is fixed ä to the gasket 16 in a removable manner. A this effect, this annular pike, has a series of blind holes 17 into which the nipples 16a of the fitting penetrate. 16. Thanks ä to this arrangement, the terminal annular pike, which wears out more quickly than the rest of the lining, can be replaced independently of the latter.

Claims

CLAIM : Apparatus for sandblasting according to the claim of the main patent, characterized by the fact that said lining d! 6tanch6it6 is constituted by a sleeve of flexible and compressible matter, in the thickness of which , over part of its height, an annular groove thus forming two lips, an inner one extending from said casing, and the other, outer, integral with an annular piece of driven by an oscillating rotary movement. SUB-CLAIMS: 1. -Apparatus according to claim, characterized in that the end of said casing is engaged in said groove and faces ä said interior lWe.

2. Apparatus according to claim, earaet#ris4# in that said outer lip is pierced with axial holes in which penetrating tetoris solidary d7un.e drive ring rotatably mounted on said casing. 3. Apparatus according to claim, characterized in that said sealing gasket is provided, at its front end, with an annular pike made of , flexible and compressible, softer than that of the lining, presenting an annular lip extending radially inwards, intended ä to be in right contact with the pikeä sand. 4. Apparatus according to claim and sub-claim 3, characterized in that said annular plece is assembled ä the gasket in a removable manner.