EP0861131B1 - Machine a laver industrielle - Google Patents
Machine a laver industrielle Download PDFInfo
- Publication number
- EP0861131B1 EP0861131B1 EP96935726A EP96935726A EP0861131B1 EP 0861131 B1 EP0861131 B1 EP 0861131B1 EP 96935726 A EP96935726 A EP 96935726A EP 96935726 A EP96935726 A EP 96935726A EP 0861131 B1 EP0861131 B1 EP 0861131B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- washing
- belt
- conveyor
- chamber
- perforations
- 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
Links
- 238000005406 washing Methods 0.000 claims abstract description 62
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
Definitions
- the present invention relates to an industrial washing-machine according to the preamble of claim 1.
- a drawback of the above-mentioned batchwise washing with the aid of baskets is that merely immersion in a solvent bath is not enough to remove remaining chips.
- agitation, such as stirring, of the bath therefore takes place, but it has still been found difficult to reach a satisfactory result in this manner, especially for complicated parts comprising bores and grooves, in which especially remaining chips but also cutting lubricant residues tend to adhere.
- a further disadvantage of the described washing in batches is that it is not very kind to the washed parts, which especially on powerful agitation of the solvent bath are colliding with each other and thus run the risk of being damaged.
- Both drawbacks hit especially such parts as are located in the very centre of the basket and are, in the shade of the surrounding parts, affected only by the negative consequences of the agitation in the form of impacts on the surrounding parts and not by its positive effects in the form of reinforced lubricant motion.
- a drawback of the last-mentioned type of industrial washing-machine is that it is relatively non-flexible, since the chute used must be specially adapted to the washed part to make it possible for this to be advanced through the washing and drying station. Therefore, when changing parts, also the chute must be exchanged, which causes costs both for the new chute and for the time required for dismounting the old chute and mounting the new one. In practice, there is thus no possibility of using the washing-machine for washing a different part, if required.
- the object of the invention is, on the basis of the deficiencies of the known technical solutions, to provide an industrial washing-machine, which obviates the deficiencies of the known solutions and which in one and the same machine combines the advantages that have still existed in the known solutions.
- an air supply means is arranged in the first slide plate for injection of air into the washing chamber through the perforations of the belt.
- the first conveyor comprises an endless belt, which has perforations and an upper run, which is supported by a second stationary slide plate, which abuts against the underside of the upper run and comprises drainage openings or ducts for draining or sucking out the washing liquid from the washing chamber through the perforations in the belt of the first conveyor, the belts of the two conveyors being driven synchronously.
- the second slide plate preferably has air exhaust openings or ducts for discharging the air injected into the washing chamber through the perforations in the belt of the first conveyor.
- an insert which is adapted to hold the workpieces to be washed, is insertable into the washing chamber.
- This solution is especially suited when more than one part should be washed simultaneously in one and the same washing chamber or when very complicated parts are to be washed, which for optimum washing results require a special arrangement relative to the injection means.
- washing chambers are fixedly arranged on the first conveyor.
- the industrial washing-machine 1 shown in Figs 1 and 2 comprises a lower or first conveyor 2 and an upper or second conveyor 3.
- the lower conveyor 2 is formed as a belt conveyor, whose belt 4 is clamped between two rollers 5, 6, of which at least one is operable both clockwise and anticlockwise according to Fig. 1.
- the upper and lower runs 7, 8 of the belt 4 are horizontally arranged, and between the two rollers 5, 6, the underside of the upper run 7 abuts in a slidable manner against a metal sheet 9 which is also horizontally arranged.
- the metal sheet has a width corresponding to the width of the belt 4 and is included as an upper wall in a parallelepipedal box 10 which by means of a pipe socket 11 is connected to a suction member (not shown).
- both the belt 4 and the metal sheet 9 have perforations, the perforations 12 of the belt 4 having a relatively small diameter and the perforations 13 of the metal sheet 9 having a relatively large diameter.
- the belt 4 is divided into a plurality of washing chambers 14. These are parallelepipedal and integrated with the belt 4 and have a chamber opening 15, side walls 16, 17, 18, 19 and a bottom wall 20, of which walls the bottom wall 20 is perforated (the previously mentioned perforations 12).
- the side walls 16, 18 extending in parallel with the travelling direction of the belt 4 are sectioned, i.e. they consist of wall slats 16', 16" ..., 16 n and 18', 18", ..., 18 n , respectively.
- the wall slats engage tightly with each other by means of groove and tongue members 21, 22, which, seen from above (Fig. 5), are slightly bevelled for reduction of friction.
- the individual washing chambers 14 are spaced apart by a groove 23, which is formed in the upper side of the wall between two neighbouring chambers 14.
- the wall is formed of the side walls 17, 19 of two juxtaposed chambers, the side walls preferably being made in one piece. This is, however, as the expert will realise, possible only if the wall thickness is not too great.
- the side walls 16, 17, 18, 19 of the chambers 14 have, especially when the belt 4 travels over the horizontal metal sheet 9, exactly the same height and thus constitute a plane which is parallel with the metal sheet 9.
- the above-mentioned upper conveyor 3 is also formed as a belt conveyor, whose belt 24 is clamped between two free-running rollers 25, 26.
- the upper and lower runs 27, 28 of the belt 24 are horizontally arranged, and between the two rollers 25, 26, the upper side of the lower run 28 abuts in a slidable manner against a stationary, horizontally arranged slide plate 29.
- the slide plate 29 has a width corresponding to the width of the belt 24, which in turn is identical with the belt width of the lower conveyor 2.
- the belt 24 has perforations 30, the size of which corresponds to that of the perforations 12 in the belt 4.
- the slide plate 29 comprises two tubular members 31, 32, which extend transversely of the slide plate 29 and the belt 24 and whose underside is flattened and arranged flush with the underside of the slide plate 29.
- the underside of the tubular members 31, 32 is formed with apertures 33, 34, which in the longitudinal direction of the tubular members 31, 32 are arranged to match the perforations 30 in the belt 24.
- the tubular members 31, 32 have closed ends and are connectible by means of tube-coupling nipples 35, 36 to a pump (not shown), which under high pressure feeds a cleaning liquid, such as trichloroethylene, to a compressor (not shown) which emits pressurised drying air.
- a cleaning liquid such as trichloroethylene
- the slide plate 29 has a length which essentially corresponds to the distance between the two rollers 25, 26 and is arranged in parallel with the metal sheet 9. Together with the metal sheet 9, the slide plate 29 forms a nip, whose opening corresponds to the space required by the belt 4 and chamber 14 of the lower conveyor 2 and the belt 24 of the upper conveyor 3 in vertical as well as horizontal direction.
- the slide plate 29 holds the belt 24 down in sealing engagement with the flat upper side of the chambers 14 of the subjacent belt 4 by means of a pressure pad 37, which is filled with a pressurised fluid or with compressed air and acts on the upper side of the slide plate 29 by a very uniformly distributed pressure, which is adjustable by regulating the pressure of the fluid or air.
- the rollers 25, 26 of the upper conveyor 3 are, as mentioned above, free-running, i.e. they have no drive means of their own. Therefore, the belt 24 is instead driven by the lower belt 4 by means of a tooth arrangement (Figs 3, 4).
- This comprises a toothed strip-shaped sealing strip 38, 39 along each of the two longitudinal edges of the belt 24 and a corresponding sealing groove 40, 41 each in the upper side of the side walls 16, 18 of the washing chambers, the two sealing strips 38, 39 and the sealing grooves 40, 41 besides serving in lateral direction to seal the chambers.
- sealing strips 38, 39 serve to drive as well as to seal
- other projections formed on the belt 24 of the upper conveyor 3 only serve to seal.
- beads 42, 43 (Fig. 4) are involved, which are semicircular in cross-section and extend in the longitudinal direction of the belt and transversely thereof, respectively.
- the longitudinal beads 42 are arranged on the inside of the belt 24 precisely opposite the sealing strips 38, 39 and engage sealingly but slidably with corresponding recesses 44 in the slide plate 29, and the transverse beads 43 are arranged in the longitudinal direction of the belt at such a distance that they sealingly engage in the above-mentioned groove between or in the chamber walls 17, 19.
- the above-described industrial washing-machine 1 comprises a plurality of spaced-apart washing chambers 14, which are arranged on an endless belt 4. Since this is longer than the superimposed belt 24 which is adapted to close the washing chambers 14, the washing chambers 14 are easily accessible both before and after the belt 4 for unimpeded supply and discharge of parts 45 to be washed.
- the parts 45 can either be arranged separately in a washing chamber 14 of their own or according to Fig. 5, for instance, in pairs in an insert 46, which is specially adapted to the washed part 45 and supports this in a manner which is advantageous for achieving a desirable cleaning result.
- inserts 46 for different parts 45 suitably all inserts 46 still have the same outer dimensions adapted to the size of the washing chamber 14.
- the washed part 45 is flushed only from above through the belt 24.
- injection means are arranged at the sides of the chambers 14 and also under the chambers 14 in the metal sheet 9.
- the injection means under the chambers can have the same appearance as the above-described tubular members 31, 32 and will therefore not be described in more detail.
- the injection means arranged at the sides of the chambers 14 preferably comprise a nozzle 47, which is arranged centrally in one of the above-mentioned wall slats 16', 16", ..., 16 n and 18', 18", ..., 18 n and opens, on the outside of the slat, into a projection 48 which is undercut in a dovetailed manner.
- the projection 48 is adapted to engage, slidably in the longitudinal direction of the belt 4, with a correspondingly dovetailed rail 14 which is adapted, when passing a projection 48, to inject a dose of pressurised washing liquid into the nozzle 47 and, thus, the chamber 14.
- the two conveyors 2, 3 always operate synchronously with one another and preferably continuously at a steady speed in the feeding or travelling direction indicated by arrow 50. It will be appreciated, however, that there is nothing to prevent, for instance when washing and drying, short stops from being put into the feeding in order to achieve a satisfactory result, also in particularly difficult cases. Also the supplying and discharging of parts 45 on the same side of the upper conveyor 3 is, of course, possible but requires the travelling direction to be reversible.
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Centrifugal Separators (AREA)
- Cleaning In General (AREA)
Claims (6)
- Machine à laver industrielle, comprenant au moins un espace de lavage de pièces, cet espace étant placé entre un premier transporteur (2) et un second transporteur (3) qui est parallèle au premier transporteur (2) et comporte une courroie sans fin (24) ayant un brin inférieur (28) dont la face inférieure ferme ledit espace, un dispositif d'injection (31) disposé afin qu'il injecte un liquide de lavage dans l'espace de lavage par des perforations (30) formées dans la courroie (24), l'un au moins des transporteurs (2, 3) étant destiné à entraîner ledit espace devant le dispositif d'injection (31) pour le lavage des pièces, caractérisé en ce que l'espace de lavage est une chambre (14) ayant une ouverture supérieure (15) de chambre, des parois latérales (16, 17, 18, 19) et une paroi inférieure (20) qui a des perforations (12), en ce que le brin inférieur (28) de la courroie sans fin (24) est maintenu vers le bas contre l'ouverture (15) de la chambre par une première plaque stationnaire (29) de glissement qui est en butée contre la face supérieure du brin inférieur (28) et a une largeur et une longueur supérieures à celles de l'ouverture (15) de la chambre, et en ce que le dispositif d'injection (31) est disposé dans la plaque de glissement (29).
- Machine à laver industrielle selon la revendication 1, caractérisée en ce qu'un dispositif (32) d'alimentation pneumatique est disposé dans la première plaque de glissement (29) afin qu'il injecte de l'air dans la chambre de lavage (14) par les perforations (30) de la courroie.
- Machine à laver industrielle selon la revendication 1 ou 2, caractérisée en ce que le premier transporteur (2) comporte une courroie sans fin (4) ayant des perforations (12) et un brin supérieur (7) qui est supporté par une seconde plaque stationnaire de glissement (9) qui est en butée contre la face inférieure du brin supérieur (7) et a des ouvertures (13) d'évacuation ou des conduits d'évacuation ou d'aspiration de liquide de lavage de la chambre de lavage (14) par l'intermédiaire des perforations (12) de la courroie (4) du premier transporteur, les courroies (4, 24) des deux transporteurs étant entraînées en synchronisme.
- Machine à laver industrielle selon la revendication 3, caractérisée en ce que la seconde plaque de glissement (9) comprend des ouvertures (13) d'échappement d'air ou des conduits d'évacuation de l'air injecté dans la chambre de lavage (14) par les perforations (30) de la courroie (24) du premier transporteur.
- Machine à laver industrielle selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'un élément rapporté (46) destiné à loger les pièces (45) à laver peut être introduit dans la chambre de lavage (14).
- Machine à laver industrielle selon l'une quelconque des revendications 1 à 5, caractérisée en ce que plusieurs chambres de lavage (14) sont disposées en position fixe sur le premier transporteur (2).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9503674A SE505487C2 (sv) | 1995-10-19 | 1995-10-19 | Industritvättmaskin |
SE9503674 | 1995-10-19 | ||
PCT/SE1996/001328 WO1997014515A1 (fr) | 1995-10-19 | 1996-10-18 | Machine a laver industrielle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0861131A1 EP0861131A1 (fr) | 1998-09-02 |
EP0861131B1 true EP0861131B1 (fr) | 2001-09-19 |
Family
ID=20399888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96935726A Expired - Lifetime EP0861131B1 (fr) | 1995-10-19 | 1996-10-18 | Machine a laver industrielle |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0861131B1 (fr) |
AT (1) | ATE205757T1 (fr) |
AU (1) | AU7354296A (fr) |
DE (1) | DE69615391T2 (fr) |
SE (1) | SE505487C2 (fr) |
WO (1) | WO1997014515A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE545117C2 (en) * | 2021-05-27 | 2023-04-04 | Viverk Ab | A cleaning device comprising an oscillating conveyor and a method for cleaning a workpiece |
DE102021210880A1 (de) | 2021-09-29 | 2023-03-30 | Zf Friedrichshafen Ag | Prüfkörper zum Prüfen einer Waschleistung einer industriellen Waschmaschine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3229701A (en) * | 1963-01-10 | 1966-01-18 | Ind Washing Machine Corp | Washing machine for cleaning small industrial parts |
US4327756A (en) * | 1980-05-19 | 1982-05-04 | Metalwash Machinery Corp. | Cleaning machine |
-
1995
- 1995-10-19 SE SE9503674A patent/SE505487C2/sv not_active IP Right Cessation
-
1996
- 1996-10-18 DE DE69615391T patent/DE69615391T2/de not_active Expired - Fee Related
- 1996-10-18 AU AU73542/96A patent/AU7354296A/en not_active Abandoned
- 1996-10-18 EP EP96935726A patent/EP0861131B1/fr not_active Expired - Lifetime
- 1996-10-18 AT AT96935726T patent/ATE205757T1/de not_active IP Right Cessation
- 1996-10-18 WO PCT/SE1996/001328 patent/WO1997014515A1/fr active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
AU7354296A (en) | 1997-05-07 |
ATE205757T1 (de) | 2001-10-15 |
SE9503674L (sv) | 1997-04-20 |
WO1997014515A1 (fr) | 1997-04-24 |
SE505487C2 (sv) | 1997-09-08 |
SE9503674D0 (sv) | 1995-10-19 |
DE69615391D1 (de) | 2001-10-25 |
EP0861131A1 (fr) | 1998-09-02 |
DE69615391T2 (de) | 2002-07-04 |
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