• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for cleaning workpieces of adhering working media and / or work residues, in which the workpieces are introduced into the cleaning chamber and are acted upon in the cleaning chamber with a cleaning medium to blow off the adhering working fluid and / or work residues. A particularly advantageous cleaning can be achieved by using steam as the first cleaning medium and compressed air as the second cleaning medium.
    公开号:AT514185A1
    申请号:T501742013
    申请日:2013-03-15
    公开日:2014-10-15
    发明作者:Hubert Ing Knoth；Petra Knoth；Rudolf Knoth-Bambule；Christian Seefeldner
    申请人:Hubert Ing Knoth；
    IPC主号:
    专利说明:

    1 16382
    The invention relates to a method for cleaning workpieces of adhering working media and / or work residues, in which the workpieces are introduced into the cleaning chamber and are acted upon in the cleaning chamber with a cleaning medium to blow off the adhering working media and / or work residues.
    In the manufacture of complex workpieces, such as some cylinder heads of internal combustion engines, usually many different machining operations are performed one behind the other. Between these operations it is necessary to carry out measuring operations in order to check the work progress and to allow a quality control. Many of the machining operations are associated with contamination of the workpiece, which manifests itself, for example, in the fact that cooling medium or honing oil adheres to the workpiece or chips of machining operations on the workpiece remain. To enable accurate and unadulterated measurements, it is necessary to remove these residues from the relevant parts of the workpiece, which is currently usually done in such a way that the workpieces are manually blown with compressed air guns. The problem with this is that even when using complex noise-reduced compressed air guns a large noise occurs. In addition, in manual cleaning, the adhering residues are atomized and so on the one hand a risk of injury and on the other hand, a pollution that pollutes the air at the workplace of the person.
    In addition to these disadvantages, it should be noted that manual cleaning, especially for complex workpieces, is labor-intensive, thereby not only causing labor costs, but also slowing down production.
    A known alternative to manual cleaning are cleaning machines in which the components are first exposed to a liquid cleaning medium and then dried. Such cleaning machines are extremely expensive and costly and cause by the required cycle times a significant slowdown of the production process.
    From EP 0 158 904 A a method and a device for cleaning bodies of adhering dust is known. The bodies, such as 2/15 2
    Metal container for audio tape or videotapes, transported through a cleaning socket and exposed to forced air. Such a device is well suited for cleaning articles when the contaminant is primarily dust. The cleaning of workpieces contaminated with residues such as chips, honing oil or the like is not possible with such a device.
    DE 29 36 779 A shows a device for cleaning motor vehicle brakes, in which the brake to be cleaned is covered by a suction hood and is acted upon by movable nozzles with compressed air. A similar device for cleaning air filters is described in US 4,808,234 A. However, it has been found that in practice such devices are not able to provide sufficient cleaning of workpieces within a short time.
    DE 41 27 982 A shows a method for removing dirt from motor vehicles in a BeszNchtungSStraße. In this case, a motor vehicle body is moved on a carriage through a tunnel-like device and simultaneously rotated about a horizontal axis. Through a plurality of nozzles, a cleaning medium is sprayed from different directions to the vehicle body. In such a device, it is extremely expensive to prevent bouncing cleaning medium and the detached dirt are thrown into the environment of the device.
    Furthermore, DE 195 32 576 A shows a device for cleaning workpieces, in which the workpiece is rotated in a chamber and is acted upon by a cleaning medium, which is sprayed from a plurality of nozzles. Such a device is only suitable for individual workpieces or small quantities, since the workpiece change is expensive.
    Another known solution is disclosed in EP 1 655 082 A. By intelligent arrangement of compressed air nozzles, a good cleaning result can be achieved. However, ever shorter cycle times require a further increase in cleaning performance while reducing the time available. 3/15 3
    It should also be noted that different requirements are placed on the type and degree of cleaning at different points on a production line. For example, at points of the production process where measurements are taken, it is necessary to make the measuring points completely free of foreign bodies, residues of grinding emulsion and the like, and to pass them over completely dry.
    In order to achieve these goals, the use of steam as a cleaning medium has been proposed for some cleaning operations. In fact, a very good cleaning result can thus be achieved under certain boundary conditions. However, it has proved to be disadvantageous that a part of the steam always condenses on the workpiece or on internals of the cleaning chamber. This condensate then mixes with the abrasive emulsions dripping from the workpiece which are collected for recycling and dilute and contaminate them. In this way, a much more complex treatment of the emulsions is required, or it must be used at all a higher proportion of new emulsion.
    Object of the present invention is to avoid these disadvantages and to improve the method of the type described above so that even with firmly adhering and difficult to remove impurities within a short time sufficient cleaning is achieved. In particular, the quality of wiederönönnenen emulsions should not be affected.
    Another object of the present invention is to provide an apparatus for carrying out such a method.
    According to the invention, these objects are achieved in that steam is used as the first cleaning medium and compressed air as the second cleaning medium.
    In particular, the workpiece is subjected to wet steam in the first step. Here are special nozzles directly for defined cleaning, or generally set up and adjusted. Which movement the nozzles or the workpiece performs during the cleaning process is different. There is also the possibility that the workpieces to be cleaned accomplish the movement, or that the nozzles and workpiece stand still to one another. The targeted heating of the 4/15 4 sites to be cleaned, the workpiece in comparison to other degreasing or. Degreasing methods only slightly heated. The use of steam simultaneously reduces the water input.
    The steam dissolves the fats, dissolves them and is subsequently sucked off. In any case, the simultaneous or staggered application of compressed air is important in order to immediately dry critical parts of the workpiece in order to prevent dripping of condensate.
    Preferably, an extraction is performed from the vicinity of the nozzle through which steam is injected. This is preferably done directly at the nozzle (construction either integrated into the nozzle or in the immediate vicinity of the steam outlet opening). Another extraction for the ambient air is also provided. The amount of steam, which is deflected by obstacles after exiting the nozzle, is absorbed by the ambient air extraction.
    It is particularly favorable if the above extraction is maintained during the duration of the blow-off with steam and optionally after a predetermined delay time thereafter. As a result, condensate formation can be effectively suppressed.
    It is particularly advantageous if the suction takes place via a plurality of mammalian openings, which are arranged on different sides of the nozzles through which steam is injected. As a result, the condensate can be detected effectively at all points where it is formed.
    A final drying and cooling is preferably carried out in that immediately after the blowing off with steam is carried out a blasting with compressed air.
    A device particularly particularly favored variant of the method provides that the blowing off with compressed air is at least partially carried out by the same nozzle as the blowing off with steam. A particular advantage is that it is difficult to effectively prevent the formation of condensate at the nozzle tip. As a result, there is a risk that drips condensate from the nozzle. By Nachblasen with compressed air, this danger can be significantly reduced. 5/15 5
    It is also favorable for removal of the steam, if at least during the blowing off with steam, a global suction is carried out from the cleaning chamber.
    A particularly favored embodiment variant of the method according to the invention is carried out in such a way that the blowing off takes place through nozzles which are moved through the cleaning medium. In particular, it is advantageous if the nozzles, which are moved through the cleaning medium, are introduced into openings or bores of the workpiece. These nozzles, which rotate for example, can thus particularly effectively blow out foreign bodies.
    The above method can also be developed so that the workpiece is moved relative to the cleaning chamber, wherein the movement is preferably translational. In this way, it is possible to reliably subject all areas of the workpiece to a cleaning and thereby reliably prevent material entrainment in the respective next processing step, in a first embodiment variant of the method which provides a relative movement, the workpiece is rotated inside the cleaning chamber. In relatively compact workpieces, such as cylinder heads or the like, it is possible in this way to cause a relative movement of the workpiece within a cleaning chamber, the dimensions of which are not substantially greater than that of the workpiece. It is particularly advantageous if a first group of individual jets are directed in an angle against the direction of rotation a second group of individual jets in one direction in the direction of the axis of rotation and a third group of individual jets in the direction of rotation on the workpiece. It has been found that a particularly favorable cleaning effect can be achieved by such a design. In addition to this inclination, the individual beams may also be inclined at an angle relative to the normal plane to the axis of rotation in order to detect less accessible areas of the workpiece.
    It is also advantageous if the cleaning chamber is lowered to carry out the cleaning process on a conveyor for conveying workpieces.
    Preferably, the blowing is carried out by a plurality of individual jets, which are directed in at least three groups on the workpiece, and wherein the nozzles 6/15 6 of the at least three groups are directed at different angles to the workpiece.
    A further aspect of the present invention is that the application of the individual jets to the workpiece so that at certain points a sufficiently high energy is achieved in order to remove even firmly adhering impurities. It is also important that the individual beams are directed in different directions on the workpiece, on the one hand to reach concave or hard to reach area of the workpiece and on the other hand, to facilitate the detachment of firmly adhering residues.
    The process according to the invention can be used particularly favorably if the pressure of the compressed air is between 0.5 bar and 10 bar, preferably between 0.9 bar and 8 bar.
    It is also possible to clean blind holes or tapped holes particularly intensely, by inserting one or more nozzles into: these, moving in them, possibly stopping briefly and moving them out again.
    Furthermore, the present invention relates to a device for cleaning workpieces of adhering working media and / or Arbeitsrüekständen with a cleaning chamber and means for introducing a gaseous cleaning medium, which are designed as nozzles.
    According to the invention it is provided that the nozzles are at least partially formed for the delivery of steam.
    It is of particular advantage if a device for producing a relative movement between the workpiece and the nozzles is provided, which is designed as a clamping device. In this way, inaccessible point of the workpiece can be achieved by the cleaning medium.
    It is particularly advantageous to provide a movable mounting of the nozzles. By such a movable storage adjustments to the respective workpiece during operation can be easily made when it appears that the cleaning result in some areas is unsatisfactory. 7/15 7
    In general, the following remarks can be made for carrying out the invention:
    The steam is defined as wet steam. An optimum effect is achieved in the temperature range of the steam from 130 ° C to 2O0 ° C (370 ° C - limit superheated steam). The pressure of the steam can be adjusted with special nozzles in the range of 0.01 bar to 15 bar and used specifically for the workpiece.
    Depending on the requirements of the workpiece and the cleaning effect, different nozzles can be used. Fan nozzles with holes / slots, nozzles according to the Laval principle or special nozzles, such. Nozzles with annular discharge and adjustable discharge opening.
    When adjusting the nozzles, the following must be observed depending on pressure and requirements; Nozzles for small holes and scooping points can immerse in the workpiece. General area nozzles can be spaced from 3 mm to 500 mm from the workpiece.
    The steam generators used are characterized by a minimum water input (> 0 but <100 l / h) at pressures of 0.5 to 15 bar, the amount of water is not necessarily in proportion to the pressure.
    The steam systems / nozzle systems are characterized by the fact that an automatic condensate drain is installed in the system, which automatically empties the steam system / nozzle system between the treatments. The recovered water is discharged separately and can be further used for steam generation.
    The extraction at the point of entry (nozzle) is integrated directly into the nozzle (additional openings around the exit point) or is located in the immediate vicinity of the individual nozzle / nozzle systems. 8.15
    权利要求:
    Claims (24)
    [1]
    8 PATENT ATTACHMENTS 1. A process for cleaning workpieces of adhering working media and / or work residues, in which the workpieces are introduced into the cleaning chamber and in the cleaning chamber are subjected to a cleaning medium to blow the adhering working media and / or work residues, characterized that steam is used as the first cleaning medium and compressed air as the second cleaning medium.
    [2]
    2. The method according to claim 1, characterized in that from the environment of the nozzle through which steam is injected, an extraction is performed,
    [3]
    3. The method according to claim 2, characterized in that the suction is maintained during the duration of the blow with steam and optionally a predetermined follow-up time thereafter.
    [4]
    4. The method according to any one of claims 2 or 3, characterized in that the suction takes place via a plurality of mammalian openings, which are arranged on different sides of the nozzle through which steam is injected,
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that immediately after the blowing off with steam blowing off takes place with compressed air.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that the blowing off with compressed air is at least partially carried out by the same nozzle as the blowing off with steam.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that at least during the blowing with steam, a global suction is carried out of the cleaning chamber.
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the blowing takes place by means of nozzles, which are moved by the cleaning medium. 9/15 9
    [9]
    9. The method according to claim 8, characterized in that the nozzles, which are moved by the cleaning medium, are introduced into openings or bores of the workpiece.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the workpiece is moved relative to the cleaning chamber, wherein the movement is preferably translational.
    [11]
    11. The method according to any one of claims 1 to 10, characterized in that the cleaning chamber is lowered to carry out the cleaning operation on a conveyor for conveying workpieces.
    [12]
    12. The method according to any one of claims 1 to 11, characterized in that the blowing takes place by a plurality of individual jets, which are directed in at least three groups on the workpiece, and wherein the nozzles of the at least three groups directed at different angles to the workpiece are.
    [13]
    13. An apparatus for cleaning workpieces of adhering working media and / or work residues with a cleaning chamber and means for introducing a gaseous cleaning medium, which are designed as nozzles, characterized in that the nozzles are at least partially formed for the delivery of steam.
    [14]
    14. The apparatus according to claim 13, characterized in that adjacent to the nozzles suction openings are provided.
    [15]
    15. The apparatus according to claim 14, characterized in that the suction openings are arranged on different sides of the nozzles.
    [16]
    16. Device according to one of claims 13 to 15, characterized in that in addition to the nozzles and compressed air nozzles are provided, which are designed for blowing off with compressed air.
    [17]
    17. Device according to one of claims 13 to 16, characterized in that the nozzles are at least partially formed both for the delivery of steam and for blowing off with compressed air.
    [18]
    18. Device according to one of claims 13 to 17, characterized in that the nozzles are designed as adjustable multi-hole nozzles. 10/15 10
    [19]
    19. Device according to one of claims 13 to 18, characterized in that a plurality of groups of nozzles are provided and that the nozzles of a group are arranged on at least one common distribution pipe.
    [20]
    20. Device according to one of claims 13 to 19, characterized in that preferably in the upper region of the cleaning chamber an opening for a global suction is provided.
    [21]
    21. Device according to one of claims 13 to 20, characterized in that the nozzles are at least partially formed by the cleaning medium movable.
    [22]
    22. The apparatus according to claim 21, characterized in that the movable formed by the cleaning medium nozzles are formed in openings or holes of the workpiece lowered.
    [23]
    23. Device according to one of claims 13 to 22, characterized in that the nozzles of a first group are inclined at an angle of about 25 ° to a normal to the manifold, that the nozzles of a second group are parallel to a normal to the manifold and that the nozzles of a third group are inclined at an angle between 10 ° and 35 ° to a normal to the manifold opposite to the nozzles of a first group,
    [24]
    24. Device according to one of claims 13 to 23, characterized in that the cleaning chamber is designed to carry out the cleaning operation on a conveyor for conveying workpieces lowered 2013 03 15 Ba 11/15
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    同族专利:
    公开号 | 公开日
    DE102014103542A1|2014-09-18|
    AT514185B1|2016-07-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4425765A1|1994-07-21|1996-01-25|Duerr Gmbh & Co|Process and system for cleaning workpieces using a compressed air jet|
    DE2936779A1|1979-09-12|1981-04-02|Fischer, Friedrich W., 7500 Karlsruhe|Suction hood for cleaning large brake systems - has compressed air blow lance and inner rotary blast system for also clearing inspection window|
    DE3419028C2|1984-04-05|1987-12-17|Kessler & Luch Gmbh, 6300 Giessen, De|
    US4808234A|1984-08-30|1989-02-28|Mcwinn Filter Services Ltd.|Cleaner assembly for air filters|
    JP2872777B2|1990-08-23|1999-03-24|マツダ株式会社|How to remove body dust|
    DE19532576A1|1995-09-04|1997-03-06|Hans Hermann Dipl Ing Gross|Plant for cleaning of workpieces|
    AT500610B1|2004-11-04|2006-02-15|Knoth Automation Gmbh|PROCESS FOR CLEANING WORKPIECES|DE102016111050A1|2016-06-16|2017-12-21|Ossberger Gmbh + Co Kg|Continuous cleaning system and cleaning method for it|
    DE102016113973A1|2016-07-28|2018-02-01|Piller Entgrattechnik Gmbh|Blowing device for construction parts|
    法律状态:
    2021-11-15| MM01| Lapse because of not paying annual fees|Effective date: 20210315 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50174/2013A|AT514185B1|2013-03-15|2013-03-15|Process for cleaning workpieces|ATA50174/2013A| AT514185B1|2013-03-15|2013-03-15|Process for cleaning workpieces|
    DE201410103542| DE102014103542A1|2013-03-15|2014-03-14|Process for cleaning workpieces|
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