EP1029601A1 - Verfahren und Vorrichtung zum Waschen von Gegenständen - Google Patents

Verfahren und Vorrichtung zum Waschen von Gegenständen Download PDF

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Publication number
EP1029601A1
EP1029601A1 EP99830084A EP99830084A EP1029601A1 EP 1029601 A1 EP1029601 A1 EP 1029601A1 EP 99830084 A EP99830084 A EP 99830084A EP 99830084 A EP99830084 A EP 99830084A EP 1029601 A1 EP1029601 A1 EP 1029601A1
Authority
EP
European Patent Office
Prior art keywords
washing liquid
liquid spraying
spraying means
wash
foregoing
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.)
Withdrawn
Application number
EP99830084A
Other languages
English (en)
French (fr)
Inventor
Aurelio Caroli
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP99830084A priority Critical patent/EP1029601A1/de
Publication of EP1029601A1 publication Critical patent/EP1029601A1/de
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates to a method and an apparatus for washing parts.
  • parts for industrial and any other use are washed in apparatus where the part to be washed is moved relative to the washing liquid spraying nozzles or in apparatus where the nozzles are moved relative to the part to be washed.
  • the part that moves relative to the other, whether nozzle or part to be washed moves at a substantially constant speed and the jets of washing liquid strike the different points on the part in totally random fashion and only for the instant in which they are in the path of the corresponding nozzle.
  • This conventional method is not entirely effective in removing dirt from the part, especially from cavities or holes which the jets of washing liquid cannot easily reach.
  • a hole especially a deep blind hole, can only be satisfactorily cleaned by hand, using a suitable spray gun to direct a jet of washing liquid into it.
  • Another disadvantage of conventional machines is that, because the washing liquid is recirculated by a pump from a tank where the washing liquid collects to all the spraying nozzles, the pressure of the washing liquid flow is considerably divided and the strength of the washing jet consequently reduced.
  • the present invention provides a method for washing a part, especially a part with cavities extending inwards from its surfaces, by using means for spraying a washing liquid onto a surface of the part, said method envisaging that the part and the means for spraying the washing liquid be moved relative to each other so as to enable the surface of the part to be thoroughly washed.
  • the part to be washed and the means for spraying the washing liquid are moved relative to each other in steps of predetermined length so that the washing liquid can enter the cavities in the part.
  • Figures 1 and 2 illustrate a preferred embodiment 10 of the present apparatus for the washing of parts 12.
  • the present apparatus is designed in particular to wash irregularly shaped parts, especially parts 12 having cavities or holes 16 extending inwards from their outer surfaces 14a, 14b, 14c, 14d, 14e, 14f to be washed, where such cavities or holes are very different in size and shape and are randomly positioned on each part 12.
  • the present preferred embodiment of the washing apparatus comprises a frame 18 supporting a base 20 that supports the part 12, the base consisting of a mobile carriage 20 with wheels 22 running on rails 24 which are fixed to the frame 18 of the washing machine 10.
  • the base 20 is open at the bottom, since it is made up simply of longitudinal bars and crossbars which allow the washing water to reach the part from below, as described in more detail in another part of this description.
  • the frame 18 of the washing machine also comprises a tank 13 located under the part supporting base 20 and designed to collect the washing liquid 15 consisting preferably of water mixed with a suitable detergent or other cleaning agent.
  • the present embodiment also has means designed to spray the washing liquid at a corresponding face of the part 12 opposite it and comprising spraying elements 26a, 26b, 26c, 26d for cleaning the longitudinal faces 14a, 14b, 14c, 14d of the part 12, and spraying elements 26e, 26f for cleaning the transversal faces 14e, 14f of the part 12.
  • each of the washing liquid spraying elements 26a, 26b, 26c, 26d, 26e, 26f comprises a plurality of nozzles 28, each of which sprays a jet 30 of washing liquid.
  • the nozzles 28 of each of the washing liquid spraying elements are made on one side of a corresponding tubular component 25a, 25b 25c, 25d, 25e, 25f, in line and closely spaced in such a way that the nozzles 28 strike the part 12 to be washed along a corresponding band of the part 12 itself.
  • the spacing between the nozzles 28 is such that water jets form a comb-like configuration which enables the washing liquid to make effective contact with the surface of the part 12 in the area that is struck by the "comb" of water jets.
  • This comb-like configuration which is obtained by setting the nozzles close together, makes it possible to effectively clean every point on the surface of the part struck by the flow of washing liquid.
  • the present embodiment comprises means for moving the part 12 to be washed and the washing liquid spraying means 26a, 26b, 26c, 26d, 26e, 26f relative to each other.
  • the means for moving the part 12 relative to the washing liquid spraying means are designed to move the part 12 in a straight, longitudinal direction and, in the present preferred embodiment, consist of a drive chain 32 whose active branch drives the carriage 20 in a longitudinal direction through a corresponding toothed gear 34 which is in turn driven by a motor (not illustrated).
  • the effect of moving the part 12 in this way is to clean only the longitudinal faces 14a, 14b, 14c, 14d of the part 12.
  • washing liquid spraying elements there may be a smaller number of washing liquid spraying elements, even a single nozzle for spraying a single washing liquid jet or a single element with a plurality of spraying nozzles.
  • either the liquid spraying means are moved relative to the part to be washed or the part to be washed is moved while the spraying means are kept in a fixed position.
  • both the washing liquid spraying means and the part to be washed may be moved together according to appropriately synchronized reciprocal movements.
  • Suitable means are provided to control the relative movements of the part 12 and the washing liquid spraying means 26a, 26b, 26c, 26d, 26e, 26f.
  • the control means should be such as to make the part 12 and the washing liquid spraying means 26a, 26b, 26c, 26d, 26e, 26f move relative to each other in steps of predetermined length so that the part and the washing liquid spraying means assume relative positions such that at least one jet of washing liquid is sprayed into each of the cavities in the corresponding faces 14a, 14b, 14c, 14d, 14e, 14f of the part 12.
  • the hold time in each predetermined working position during which washing liquid is sprayed may be fixed or variable, according to the features of each single hole or cavity.
  • control means comprise sensor means 36, 38 capable of detecting the relative position of the part 12 and the washing liquid spraying means 26a, 26b, 26c, 26d, 26e, 26f.
  • said sensors consist of an encoder 36 that detects the angular position of the drive gear 34 and a transducer 38 that detects the position of the corresponding means 26e, 26f for washing the transversal faces of the part 12.
  • the control means also comprise centralized, electronic processing means 40 (for example, a PLC) which generate a signal in response to the signal from the sensor means 36 in order to move the part 12 and the washing liquid spraying means 26a, 26b, 26c, 26d, 26e, 26f relative to each other in steps of predetermined length.
  • electronic processing means 40 for example, a PLC
  • the electronic processing means 40 essentially comprise a central processing unit, a memory which, amongst other things, contains a program to control the operation of the machine, and input and output units.
  • the machine operator starts by scanning the part to be washed so as to enter part shape data in the processor 40. This data is then used by the program to control the relative movements of the part and washing liquid spraying means in such a way as to thoroughly wash the part, including holes and irregular surfaces.
  • the part carriage 20 is equipped with means designed to position the part itself at appropriate reference points.
  • means are also envisaged for selectively feeding the liquid to the washing liquid spraying means 26a, 26b, 26c, 26d, 26e, 26f.
  • the means for selectively feeding the liquid to the washing liquid spraying means 26a, 26b, 26c, 26d, 26e, 26f comprise a single pump 42 for supplying and recirculating the liquid 15 by pumping it from the tank 13 through pipes 27a, 27b, 27c 27d, 27e, 27f to the corresponding means 26a, 26b, 26c, 26d, 26e, 26f that spray the washing liquid 15 onto the part 12.
  • the present apparatus is therefore capable of locating each hole in the part and spraying a jet of washing liquid into it. Parts of any shape can be thoroughly washed.
  • the selective feed means comprise appropriate means 44 for distributing the flow of washing liquid to the spraying means 26a, 26b, 26c, 26d, 26e, 26f.
  • the electronic processing means 40 also control the flow distributing means 44 in such a way as to activate the nozzles 28 of only one spraying element at a time, so that the pressure of the washing liquid jet delivered by each single nozzle is higher and, consequently, the jet is more powerful and more effective in removing the dirt from the surface of the part to be washed.
  • the washing liquid may be supplied to a predetermined number of spraying elements or groups of nozzles instead of just to a single spraying element or a single group of nozzles, so that the corresponding number of jets are delivered at a pressure that is in any case higher than the pressure that would be obtained if all the spraying elements of the machine were activated at the same time.
  • the part to be washed is moved longitudinally by a series of steps, so as to wash the corresponding face of the part, and then returned to the starting position.
  • the head and tail ends of the part may be washed simultaneously or in sequence after the last longitudinal face has been washed.
  • there are means (illustrated by the two-way arrows labelled M26a, M26b, M26c M26d, M26e, M26f) each designed to move the corresponding washing liquid spraying element 26a, 26b, 26c, 26d, 26e, 26f in a direction parallel to each face 14a, 14b, 14c, 14d, 14e, 14f and perpendicular to the path of the jet of washing liquid of the corresponding face 14a, 14b, 14c, 14d, 14e, 14f.
  • the washing liquid spraying means 26a, 26b, 26c, 26d, 26e, 26f are vertical for the spraying elements 26a, 26c, 26e, 26f and horizontal for the spraying elements 26b, 26d.
  • there are also means (illustrated by the two-way arrows labelled D26a, D26b, D26c D26d, D26e, D26f) each designed to move the corresponding washing liquid spraying element 26a, 26b, 26c, 26d, 26e, 26f in a direction perpendicular to each face 14a, 14b, 14c, 14d, 14e, 14f.
  • the adjusting movements perpendicular to the paths of the washing jets and to the faces of the spraying elements 26a, 26b, 26c, 26d, 26e, 26f are controlled by the electronic processing means 40 according to the position signals generated by the position sensors 36 and 38.

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  • Cleaning By Liquid Or Steam (AREA)
EP99830084A 1999-02-18 1999-02-18 Verfahren und Vorrichtung zum Waschen von Gegenständen Withdrawn EP1029601A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99830084A EP1029601A1 (de) 1999-02-18 1999-02-18 Verfahren und Vorrichtung zum Waschen von Gegenständen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99830084A EP1029601A1 (de) 1999-02-18 1999-02-18 Verfahren und Vorrichtung zum Waschen von Gegenständen

Publications (1)

Publication Number Publication Date
EP1029601A1 true EP1029601A1 (de) 2000-08-23

Family

ID=8243279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99830084A Withdrawn EP1029601A1 (de) 1999-02-18 1999-02-18 Verfahren und Vorrichtung zum Waschen von Gegenständen

Country Status (1)

Country Link
EP (1) EP1029601A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1626819B1 (de) * 2003-04-16 2013-12-25 Earl Fenton Goddard Teilewaschvorrichtung
WO2023009921A1 (en) 2021-07-27 2023-02-02 Exxonmobil Chemical Patents Inc. Systems and methods of cleaning extruders

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2922213A1 (de) * 1979-03-12 1980-09-18 John Michael Bartlett Reinigungsvorrichtung und -verfahren fuer maschinenkomponenten
DE8806774U1 (de) * 1988-05-25 1988-07-07 S + B Schätzle + Bergmann GmbH, 8759 Hösbach Waschvorrichtung für Werkstücke
DE3814014A1 (de) * 1988-04-26 1989-11-09 Werner & Pfleiderer Verfahren und vorrichtung zum reinigen von verschmutzten werkstuecken
US5370746A (en) * 1989-08-16 1994-12-06 O & J Hojtryk A/S Process and apparatus for cleaning small diameter clogged holes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2922213A1 (de) * 1979-03-12 1980-09-18 John Michael Bartlett Reinigungsvorrichtung und -verfahren fuer maschinenkomponenten
DE3814014A1 (de) * 1988-04-26 1989-11-09 Werner & Pfleiderer Verfahren und vorrichtung zum reinigen von verschmutzten werkstuecken
DE8806774U1 (de) * 1988-05-25 1988-07-07 S + B Schätzle + Bergmann GmbH, 8759 Hösbach Waschvorrichtung für Werkstücke
US5370746A (en) * 1989-08-16 1994-12-06 O & J Hojtryk A/S Process and apparatus for cleaning small diameter clogged holes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1626819B1 (de) * 2003-04-16 2013-12-25 Earl Fenton Goddard Teilewaschvorrichtung
WO2023009921A1 (en) 2021-07-27 2023-02-02 Exxonmobil Chemical Patents Inc. Systems and methods of cleaning extruders

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