US20100032291A1 - Device for Surface Treatment of Workpieces - Google Patents
Device for Surface Treatment of Workpieces Download PDFInfo
- Publication number
- US20100032291A1 US20100032291A1 US12/084,468 US8446806A US2010032291A1 US 20100032291 A1 US20100032291 A1 US 20100032291A1 US 8446806 A US8446806 A US 8446806A US 2010032291 A1 US2010032291 A1 US 2010032291A1
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- United States
- Prior art keywords
- reactor housing
- fixing element
- cover
- screen element
- workpiece
- 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.)
- Abandoned
Links
- 238000004381 surface treatment Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 33
- 230000008569 process Effects 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- -1 for example Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
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- 230000008439 repair process Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/02—Tanks; Installations therefor
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/06—Suspending or supporting devices for articles to be coated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/16—Apparatus for electrolytic coating of small objects in bulk
- C25D17/18—Apparatus for electrolytic coating of small objects in bulk having closed containers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/022—Electroplating of selected surface areas using masking means
Definitions
- the present invention relates to a device for surface treatment of workpieces.
- layers are electrochemically applied for finishing the surface of components. This is accomplished in practice mostly by immersing the components into baths of a galvanic system. In particular in electrochemically applied layers, the component must be completely or partially immersed into the bath.
- the components to be treated are positively inserted into a basket-type or drum-type stand.
- This stand may be immersed into, or rotated in, the bath, for example.
- small components such as injector elements to be chrome-plated are to be precisely coated, these are treated in practice in batches of numerous components, the components being accurately inserted into a receptacle, and their positions are thus defined.
- the problem in this case is, in particular, that thermal expansion occurs due to high temperatures, which cause a change in the dimensions of the component position relative to the screen position in the event of partial coverage of component surfaces not to be coated.
- a robot-operated galvanic machine may be used, which also makes the integrated use of pre-cleaning stages or finishing preservation stages possible. This simplifies the component flow in the plant and the manipulation complexity is minimized.
- the use of an industrial robot, for example, which moves twelve gripped components through the treatment stations and inserts them into guides using twelve grippers simultaneously, is known from practice. For this purpose, an accurate alignment of the robot, gripper guide rails, and treatment cells is needed, including the parts feed and parts return.
- plastics for example, PVC-C, PVDF, or Teflon may be used, since a metallic base material to be coated with an inert substance is subject to wear and thus to the risk of influencing the process, for example, by leak currents over the base material.
- This plastic is subject to considerable changes in dimensions due to process-related strong temperature fluctuations, in particular during the feed or during idling. Swelling of the plastic when using aqueous media also results in dimensional changes. In addition, there is the problem with plastics that the warping behavior of the mostly amorphous structure of the material cannot be accurately predicted. Asymmetric warping is often observed, in particular in large components.
- the exemplary embodiments and/or exemplary methods of the present invention provides a device for galvanic surface treatment of workpieces in particular including at least one reactor housing having at least one process chamber and being coverable by a cover, and a screen element which is spatially connected to the process chamber, and which has at least one receptacle for the workpiece to be treated.
- a fixing element having a smaller thermal expansion coefficient is situated between the reactor housing and the screen element, defining their arrangement relative to each other.
- the distances between the position of the screen element and the position of the reactor housing relevant for the temperature and media-caused expansion are thus advantageously minimized and optimized, which makes it possible to positively situate the workpiece to be treated.
- the device according to the exemplary embodiments and/or exemplary methods of the present invention if the screen element and the reactor housing are made of plastic due to the aggressive nature of the medium used and for achieving electrical insulation.
- plastic Due to its amorphous structure, plastic expands in an unpredictable manner and in the event of greater temperature fluctuations it expands considerably, which may cause the otherwise absolute positioning of the component and in particular of an automated gripper device for the component with respect to the screen element and the reactor housing to become lost.
- the fixing element is advantageously fixedly mounted, while the reactor housing and the screen element are mounted on the fixing element.
- the fixing element may be a simple metallic element such as a steel support which is screw-mounted or pin-mounted on a machine stand.
- reactors in any arrangement may be built into a machine on such a fixing element without problems arising due to thermal effects.
- the manufacturing costs may also be advantageously reduced, since such a device of modular design may be manufactured much less expensively than, for example, a reactor on which a plurality of treatment cells is formed by machining.
- both galvanic processes in which case an anode cooperating with the workpiece acting as a cathode is situated in the process chamber, as well as purely chemical processes such as chemical nickel-plating, may be performed.
- treatment stages may be implemented in the process chamber, such as pre-treatment, coating, preservation, or drying of the workpiece to be treated.
- a treatment cell may be modified inexpensively for new workpiece types or adapted to a modified process.
- a fixing element is provided between the screen element and the reactor housing, but also a cover holder, fixing the position of the cover of the reactor housing with respect to the reactor housing, having a smaller thermal expansion coefficient than the cover.
- a cover made of plastic, which is exposed to strong thermal fluctuations, may thus also be situated with small deviations regarding its positioning with respect to the screen element and the reactor housing.
- a cover holder of this type may be designed as the fixing element regarding its construction.
- FIG. 1 shows a depiction in principle of a device for galvanic surface treatment of a workpiece in a longitudinal section.
- FIG. 2 shows a section through the device according to FIG. 1 along line I-I.
- FIG. 3 shows a simplified longitudinal section through a constructive embodiment of the device of FIG. 1 .
- FIG. 4 shows a perspective bottom view of the device of FIG. 3 .
- FIG. 5 shows a perspective top view onto the device of FIG. 3 .
- FIGS. 1 and 2 are highly abstracted depictions of a device 1 for galvanic surface treatment of a workpiece 2 , a reactor housing 3 being provided with a process chamber 4 , which is connected to a screen element 5 accommodating workpiece 2 .
- Reactor housing 3 and screen element 5 which may be made of any resistant material and in the present case is made of plastic, are attached to each other via a fixing element 6 for preserving their positional accuracy in the event of process-related temperature fluctuations.
- Fixing element 6 is made of a material having a smaller thermal expansion coefficient than the material of reactor housing 3 and screen element 5 and in this case represents a U-shaped steel support, which accommodates both reactor housing 3 and screen element 5 .
- Reactor housing 3 is accommodated by fixing element 6 in such a way that fixing element 6 includes an end face 3 A facing screen element 5 and a peripheral area 3 B, adjacent thereto, of reactor housing 3 .
- Screen element 5 is inserted in the direction of reactor housing 3 defined in the peripheral direction through an opening 6 C, which is round in the present case, and rests on the side of fixing element 6 facing away from end face 3 A of reactor housing 3 .
- the fixing element may also have an H-shaped cross section. Ribs may also be provided on the fixing element for reducing the bending line.
- a cover 7 is provided, whose position with respect to reactor housing 3 and screen element 5 is fixed with the aid of a cover holder 8 , which in the present case is made of steel and thus has a smaller thermal expansion coefficient than cover 7 made of plastic.
- Cover holder 8 includes an end face 7 A facing screen element 5 and a peripheral area 7 B of cover 7 , adjacent thereto, cover holder 8 having a round recess 8 A into which cover 7 is placed positively in the peripheral direction.
- cover holder 8 and fixing element 7 are designed as a commercially available U-steel whose dimensions are reworked in the simplest possible way.
- Fixing element 7 and cover holder 8 are fixedly situated on a machine stand in a way not shown in greater detail, and are pinned, for example, to an adjustable base, so that the position may be reliably found again even after modifications or service work.
- a receptacle 9 for a centering pin for fixing element 6 on a machine stand is depicted in FIG. 2 , the centering pin or passing pin may be placed flush with opening 6 C of fixing element 6 .
- Cover holder 8 may be connected to a cover actuating mechanism; in a modular design of the device having a plurality of reactor housings and accordingly a plurality of associated covers, these may be mounted on a single cover holder and operated by a single cover actuating mechanism. After a one-time adjustment, the particular cover, even in the case of a plurality of covers, remains in the correct position both in the case of a treatment station bottom-heated by process baths and in the case of an open cell and raised cover in cold exhaust air current and may be easily set in place again without clamping.
- reactor housings 3 may also be held by fixing element 6 ; the reactors may then have small dimensions due to the simple-to-align and dimensionally stable attachment of reactor housing 3 on fixing element 6 despite unfavorable process parameters as occurring in particular in galvanic processes, and may be automated, for example, using a robot gripper.
- cover holder 8 and cover 7 as the upper receptacle and fixing element 6 together with screen element 5 and reactor housing 3 as the lower receptacle it is possible that the upper receptacle moves automatedly relative to the lower receptacle and thus a tight seal of the treatment cell is achieved.
- the principle according to the exemplary embodiments and/or exemplary methods of the present invention of the holder of cover 7 and of the alignment of screen element 5 with respect to reactor housing 3 may also be applied to manually operated machines.
- the upper receptacle made up of cover holder 8 and cover 7 may also be designed as a goods support, workpiece 2 remaining stationary during treatment by process chamber 4 .
- Screen element 5 may be inserted into opening 6 C of steel fixing element 6 using tight tolerances and is sealed against reactor housing 3 also situated on fixing element 6 using a gasket 13 .
- an anode 14 For electrochemical coating of workpiece 2 , which is connected for this purpose as the cathode, an anode 14 , whose ends facing workpiece 2 are suitably designed, is situated in process chamber 4 .
- an electrolyte is filled into process chamber 4 via an inlet 15 , process chamber 4 being subdivided into a first, approximately cylindrical chamber 4 A of a small diameter and a second chamber 4 B of a larger diameter, adjacent to workpiece 2 .
- the process bath may be drained again after contact with workpiece 2 via second chamber 4 B, and removed from reactor housing 3 via a return line 17 .
- device 1 for galvanic coating of a workpiece 2 , which may represent for example a component of a motor vehicle injection system
- device 1 may also be used for purely chemical processes, where any number of reactors in any arrangement may be provided, in which positioning problems due to thermal effects may be avoided due to the design according to the exemplary embodiments and/or exemplary methods of the present invention of the device.
Abstract
A device for surface treatment, in particular galvanic surface treatment, of workpieces, including at least one reactor housing, having at least one process chamber and being coverable by a cover, and a screen element which is spatially connected to the process chamber, and which has at least one receptacle for a workpiece to be treated, a fixing element having a smaller thermal expansion coefficient being situated between the reactor housing and the screen element, which defines their relationship relative to each other.
Description
- The present invention relates to a device for surface treatment of workpieces.
- Among other methods, layers are electrochemically applied for finishing the surface of components. This is accomplished in practice mostly by immersing the components into baths of a galvanic system. In particular in electrochemically applied layers, the component must be completely or partially immersed into the bath.
- If the quality requirements for the layer are strict, the components to be treated are positively inserted into a basket-type or drum-type stand. This stand may be immersed into, or rotated in, the bath, for example. In particular when small components such as injector elements to be chrome-plated are to be precisely coated, these are treated in practice in batches of numerous components, the components being accurately inserted into a receptacle, and their positions are thus defined.
- The problem in this case is, in particular, that thermal expansion occurs due to high temperatures, which cause a change in the dimensions of the component position relative to the screen position in the event of partial coverage of component surfaces not to be coated.
- In the event of increased deposition rate and very strict precision requirements, a robot-operated galvanic machine may be used, which also makes the integrated use of pre-cleaning stages or finishing preservation stages possible. This simplifies the component flow in the plant and the manipulation complexity is minimized. The use of an industrial robot, for example, which moves twelve gripped components through the treatment stations and inserts them into guides using twelve grippers simultaneously, is known from practice. For this purpose, an accurate alignment of the robot, gripper guide rails, and treatment cells is needed, including the parts feed and parts return.
- In the case of aggressive media in the coating process, specially suitable plastics, for example, PVC-C, PVDF, or Teflon may be used, since a metallic base material to be coated with an inert substance is subject to wear and thus to the risk of influencing the process, for example, by leak currents over the base material.
- This plastic is subject to considerable changes in dimensions due to process-related strong temperature fluctuations, in particular during the feed or during idling. Swelling of the plastic when using aqueous media also results in dimensional changes. In addition, there is the problem with plastics that the warping behavior of the mostly amorphous structure of the material cannot be accurately predicted. Asymmetric warping is often observed, in particular in large components.
- In repair or modification work, setting-up is therefore very time-consuming and difficult due to the need to realign the components and tools with respect to each other. After a first temperature cycle, corrections may become necessary, so that the treatment stations must then be realigned.
- Since in the case of a larger number of components to be coated which must be arranged in a row in a screen rail and aligned, a greater change in dimensions of the individual coating positions with respect to the robot gripper system occurs during heating due to the thermal longitudinal expansion than the tolerances of the component guides in the coating positions allow; collisions also more often occur, in particular between a robot and a coating station.
- The exemplary embodiments and/or exemplary methods of the present invention provides a device for galvanic surface treatment of workpieces in particular including at least one reactor housing having at least one process chamber and being coverable by a cover, and a screen element which is spatially connected to the process chamber, and which has at least one receptacle for the workpiece to be treated. A fixing element having a smaller thermal expansion coefficient is situated between the reactor housing and the screen element, defining their arrangement relative to each other.
- The distances between the position of the screen element and the position of the reactor housing relevant for the temperature and media-caused expansion are thus advantageously minimized and optimized, which makes it possible to positively situate the workpiece to be treated.
- Of special advantage is the device according to the exemplary embodiments and/or exemplary methods of the present invention if the screen element and the reactor housing are made of plastic due to the aggressive nature of the medium used and for achieving electrical insulation.
- Due to its amorphous structure, plastic expands in an unpredictable manner and in the event of greater temperature fluctuations it expands considerably, which may cause the otherwise absolute positioning of the component and in particular of an automated gripper device for the component with respect to the screen element and the reactor housing to become lost.
- In particular in a system having a plurality of reactor housings in rows or fields, in the case of reactor housings made of plastic considerable problems arise regarding the dimensional stability with respect to the screen element and a gripper device for the workpiece to be treated.
- With the device according to the exemplary embodiments and/or exemplary methods of the present invention very narrow tolerances between the workpiece to be treated and the screen element are possible even in the case of a larger number of reactor housing and workpieces to be treated arranged in parallel or in fields.
- The fixing element is advantageously fixedly mounted, while the reactor housing and the screen element are mounted on the fixing element. The fixing element may be a simple metallic element such as a steel support which is screw-mounted or pin-mounted on a machine stand.
- Any number of reactors in any arrangement may be built into a machine on such a fixing element without problems arising due to thermal effects.
- Due to the modular design and the possibility of situating a plurality of small reactors on the fixing element, the manufacturing costs may also be advantageously reduced, since such a device of modular design may be manufactured much less expensively than, for example, a reactor on which a plurality of treatment cells is formed by machining.
- In the process chamber of the device, both galvanic processes, in which case an anode cooperating with the workpiece acting as a cathode is situated in the process chamber, as well as purely chemical processes such as chemical nickel-plating, may be performed.
- Furthermore, different treatment stages may be implemented in the process chamber, such as pre-treatment, coating, preservation, or drying of the workpiece to be treated.
- Due to the modular design of the device according to the exemplary embodiments and/or exemplary methods of the present invention, a treatment cell may be modified inexpensively for new workpiece types or adapted to a modified process.
- In an advantageous embodiment of the present invention, not only a fixing element is provided between the screen element and the reactor housing, but also a cover holder, fixing the position of the cover of the reactor housing with respect to the reactor housing, having a smaller thermal expansion coefficient than the cover. A cover made of plastic, which is exposed to strong thermal fluctuations, may thus also be situated with small deviations regarding its positioning with respect to the screen element and the reactor housing. A cover holder of this type may be designed as the fixing element regarding its construction.
- Further advantages and advantageous embodiments of the subject matter of the present invention are presented in the description, the drawings, and as further described herein.
- An exemplary embodiment of the device for galvanic surface treatment of workpieces according to the present invention is schematically depicted in the drawings and elucidated in greater detail in the description that follows.
-
FIG. 1 shows a depiction in principle of a device for galvanic surface treatment of a workpiece in a longitudinal section. -
FIG. 2 shows a section through the device according toFIG. 1 along line I-I. -
FIG. 3 shows a simplified longitudinal section through a constructive embodiment of the device ofFIG. 1 . -
FIG. 4 shows a perspective bottom view of the device ofFIG. 3 . -
FIG. 5 shows a perspective top view onto the device ofFIG. 3 . -
FIGS. 1 and 2 are highly abstracted depictions of a device 1 for galvanic surface treatment of aworkpiece 2, areactor housing 3 being provided with aprocess chamber 4, which is connected to ascreen element 5 accommodatingworkpiece 2. -
Reactor housing 3 andscreen element 5, which may be made of any resistant material and in the present case is made of plastic, are attached to each other via afixing element 6 for preserving their positional accuracy in the event of process-related temperature fluctuations.Fixing element 6 is made of a material having a smaller thermal expansion coefficient than the material ofreactor housing 3 andscreen element 5 and in this case represents a U-shaped steel support, which accommodates bothreactor housing 3 andscreen element 5. -
Reactor housing 3 is accommodated byfixing element 6 in such a way that fixingelement 6 includes anend face 3A facingscreen element 5 and aperipheral area 3B, adjacent thereto, ofreactor housing 3.Screen element 5 is inserted in the direction ofreactor housing 3 defined in the peripheral direction through an opening 6C, which is round in the present case, and rests on the side offixing element 6 facing away fromend face 3A ofreactor housing 3. - Unlike the embodiment shown, the fixing element may also have an H-shaped cross section. Ribs may also be provided on the fixing element for reducing the bending line.
- To
close reactor housing 3 andscreen element 5 whileworkpiece 2 is exposed to a process bath, acover 7 is provided, whose position with respect toreactor housing 3 andscreen element 5 is fixed with the aid of acover holder 8, which in the present case is made of steel and thus has a smaller thermal expansion coefficient thancover 7 made of plastic. -
Cover holder 8 includes anend face 7A facingscreen element 5 and aperipheral area 7B ofcover 7, adjacent thereto,cover holder 8 having around recess 8A into whichcover 7 is placed positively in the peripheral direction. - In the depicted embodiment,
cover holder 8 andfixing element 7 are designed as a commercially available U-steel whose dimensions are reworked in the simplest possible way. - Fixing
element 7 andcover holder 8 are fixedly situated on a machine stand in a way not shown in greater detail, and are pinned, for example, to an adjustable base, so that the position may be reliably found again even after modifications or service work. Areceptacle 9 for a centering pin forfixing element 6 on a machine stand is depicted inFIG. 2 , the centering pin or passing pin may be placed flush with opening 6C offixing element 6. -
Cover holder 8 may be connected to a cover actuating mechanism; in a modular design of the device having a plurality of reactor housings and accordingly a plurality of associated covers, these may be mounted on a single cover holder and operated by a single cover actuating mechanism. After a one-time adjustment, the particular cover, even in the case of a plurality of covers, remains in the correct position both in the case of a treatment station bottom-heated by process baths and in the case of an open cell and raised cover in cold exhaust air current and may be easily set in place again without clamping. - Similarly, a plurality of
reactor housings 3 may also be held byfixing element 6; the reactors may then have small dimensions due to the simple-to-align and dimensionally stable attachment ofreactor housing 3 onfixing element 6 despite unfavorable process parameters as occurring in particular in galvanic processes, and may be automated, for example, using a robot gripper. - In one embodiment of
cover holder 8 andcover 7 as the upper receptacle andfixing element 6 together withscreen element 5 andreactor housing 3 as the lower receptacle, it is possible that the upper receptacle moves automatedly relative to the lower receptacle and thus a tight seal of the treatment cell is achieved. The principle according to the exemplary embodiments and/or exemplary methods of the present invention of the holder ofcover 7 and of the alignment ofscreen element 5 with respect toreactor housing 3 may also be applied to manually operated machines. - The upper receptacle made up of
cover holder 8 andcover 7 may also be designed as a goods support,workpiece 2 remaining stationary during treatment byprocess chamber 4. - In addition to the holder of
cover 7,screen element 5, andreactor housing 3, other intermediary elements, possibly to be operated automatically, may also be similarly positioned. - Making reference to the constructive design according to
FIGS. 3 through 5 , it is apparent thatworkpiece 2 to be treated is inserted into aholder 11 onscreen element 5 with the aid of anautomated gripper device 10, which hasgripper jaws 10A, 10B for grippingworkpiece 2,screen element 5 having a throughopening 12 for contactingworkpiece 2 with an electrolyte for electrolytical coating ofworkpiece 2. -
Screen element 5 may be inserted into opening 6C ofsteel fixing element 6 using tight tolerances and is sealed againstreactor housing 3 also situated on fixingelement 6 using agasket 13. - For electrochemical coating of
workpiece 2, which is connected for this purpose as the cathode, ananode 14, whoseends facing workpiece 2 are suitably designed, is situated inprocess chamber 4. - For performing the process, an electrolyte is filled into
process chamber 4 via aninlet 15,process chamber 4 being subdivided into a first, approximatelycylindrical chamber 4A of a small diameter and asecond chamber 4B of a larger diameter, adjacent toworkpiece 2. The process bath may be drained again after contact withworkpiece 2 viasecond chamber 4B, and removed fromreactor housing 3 via areturn line 17. - In addition to the depicted application of device 1 for galvanic coating of a
workpiece 2, which may represent for example a component of a motor vehicle injection system, device 1 may also be used for purely chemical processes, where any number of reactors in any arrangement may be provided, in which positioning problems due to thermal effects may be avoided due to the design according to the exemplary embodiments and/or exemplary methods of the present invention of the device.
Claims (16)
1-13. (canceled)
14. A device for galvanic surface treatment of a workpiece, comprising:
at least one reactor housing having at least one process chamber and being coverable by a cover;
a screen element which is spatially connected to the process chamber and which has at least one receptacle for the workpiece to be treated; and
a fixing element, having a smaller thermal expansion coefficient, situated between the reactor housing and the screen element, which defines their arrangement relative to each other.
15. The device of claim 14 , wherein the fixing element is fixedly mounted.
16. The device of claim 14 , wherein the screen element and the reactor housing are at least essentially made of plastic.
17. The device of claim 14 , wherein the fixing element is at least essentially made of metal.
18. The device of claim 14 , wherein the reactor housing is accommodated by the fixing element so that the fixing element includes an end face facing the screen element and a peripheral area, adjacent thereto, of the reactor housing, the fixing element having an opening, into which the screen element is placed positively in the peripheral direction.
19. The device of claim 14 , wherein the fixing element forms a base for the screen element on its side facing away from an end face of the reactor housing.
20. The device of claim 14 , wherein the fixing element has a U-shaped design, and U-shaped legs of the fixing element encompass a peripheral area of the reactor housing.
21. The device of claim 14 , wherein the fixing element has a plurality of openings for accommodating a plurality of reactor housings.
22. The device of claim 14 , further comprising:
a cover holder having a smaller thermal expansion coefficient than the cover, and accommodating the cover of the reactor housing and fixing its position with respect to the reactor housing.
23. The device of claim 14 , wherein the cover holder includes an end face facing the screen element and a peripheral area of the cover, adjacent thereto, and the cover holder has a recess into which the cover is placed positively in the peripheral direction.
24. The device of claim 22 , wherein the fixing element and the cover holder have a same construction.
25. The device of claim 14 , wherein an anode, which cooperates with the workpiece, acts as a cathode and is situated in the process chamber.
26. The device of claim 14 , further comprising:
an automated gripper device for positioning the workpiece in the screen element.
27. The device of claim 14 , wherein the reactor housing is accommodated by the fixing element so that the fixing element includes an end face facing the screen element and a peripheral area, adjacent thereto, of the reactor housing, the fixing element having a round opening, into which the screen element is placed positively in the peripheral direction.
28. The device of claim 14 , wherein the cover holder includes an end face facing the screen element and a peripheral area of the cover, adjacent thereto, and the cover holder has a round recess into which the cover is placed positively in the peripheral direction.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102005052676.4 | 2005-11-04 | ||
DE102005052676A DE102005052676A1 (en) | 2005-11-04 | 2005-11-04 | Device for surface treatment of workpieces |
PCT/EP2006/067532 WO2007051708A1 (en) | 2005-11-04 | 2006-10-18 | Device for the surface treatment of workpieces |
Publications (1)
Publication Number | Publication Date |
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US20100032291A1 true US20100032291A1 (en) | 2010-02-11 |
Family
ID=37526987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/084,468 Abandoned US20100032291A1 (en) | 2005-11-04 | 2006-10-18 | Device for Surface Treatment of Workpieces |
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Country | Link |
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US (1) | US20100032291A1 (en) |
JP (1) | JP4928556B2 (en) |
CN (1) | CN101300376B (en) |
BR (1) | BRPI0618226A2 (en) |
DE (1) | DE102005052676A1 (en) |
WO (1) | WO2007051708A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016121397A (en) * | 2014-12-24 | 2016-07-07 | 株式会社デンソー | Plating device and production method of plating product |
US11453954B2 (en) | 2020-10-07 | 2022-09-27 | Honeywell International Inc. | Masking and sealing system for multi-step surface treatment |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009045889A1 (en) | 2009-10-21 | 2011-04-28 | Robert Bosch Gmbh | Method for electrolytic deposition of a chromium-wear protection layer on a substrate, comprises depositing the chromium-wear protection layer by a pulse voltage- and/or pulse current method |
DE102012206260A1 (en) | 2012-04-17 | 2013-10-17 | Robert Bosch Gmbh | Device for galvanic coating of coating surfaces of workpieces, comprises first and second electrodes and electrolyte, where workpieces are positioned by diaphragm comprising receiving region having workpiece holder, and flow dividing region |
AT522169B1 (en) * | 2019-10-16 | 2020-09-15 | Ess Holding Gmbh | Device for the surface treatment of a workpiece in a production line |
Citations (5)
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US3591480A (en) * | 1968-07-15 | 1971-07-06 | Ibm | Glucose measuring system |
US4456059A (en) * | 1981-09-14 | 1984-06-26 | Valeo | Heat exchanger having a bundle of parallel tubes, and method of assembling its component parts |
US5935407A (en) * | 1997-11-06 | 1999-08-10 | Chromalloy Gas Turbine Corporation | Method for producing abrasive tips for gas turbine blades |
US20030127336A1 (en) * | 2001-10-15 | 2003-07-10 | Memgen Corporation | Methods of and apparatus for making high aspect ratio microelectromechanical structures |
DE10249572A1 (en) * | 2002-10-24 | 2004-05-13 | Robert Bosch Gmbh | Device for galvanically coating, especially chromating, a workpiece comprises a coating chamber for receiving the workpiece, and an annular anode which interacts with the workpiece acting as a cathode |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2552476B2 (en) * | 1987-03-19 | 1996-11-13 | ヤマハ発動機株式会社 | High-speed plating device |
JP2000087289A (en) * | 1998-09-11 | 2000-03-28 | Nippon Mining & Metals Co Ltd | Spot plating method for metallic bar and spot plating device |
CN1122123C (en) * | 2000-09-08 | 2003-09-24 | 东莞宝迪环保电镀设备有限公司 | Vibrating surface treating equipment |
DE10260863A1 (en) * | 2002-12-23 | 2004-07-08 | Robert Bosch Gmbh | Closed reactor for surface electroplating, especially chromium plating of a workpiece, includes a reactor housing and a reactor space containing the workpiece |
-
2005
- 2005-11-04 DE DE102005052676A patent/DE102005052676A1/en not_active Withdrawn
-
2006
- 2006-10-18 CN CN2006800410279A patent/CN101300376B/en not_active Expired - Fee Related
- 2006-10-18 JP JP2008539385A patent/JP4928556B2/en not_active Expired - Fee Related
- 2006-10-18 BR BRPI0618226-7A patent/BRPI0618226A2/en not_active IP Right Cessation
- 2006-10-18 US US12/084,468 patent/US20100032291A1/en not_active Abandoned
- 2006-10-18 WO PCT/EP2006/067532 patent/WO2007051708A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US3591480A (en) * | 1968-07-15 | 1971-07-06 | Ibm | Glucose measuring system |
US4456059A (en) * | 1981-09-14 | 1984-06-26 | Valeo | Heat exchanger having a bundle of parallel tubes, and method of assembling its component parts |
US5935407A (en) * | 1997-11-06 | 1999-08-10 | Chromalloy Gas Turbine Corporation | Method for producing abrasive tips for gas turbine blades |
US20030127336A1 (en) * | 2001-10-15 | 2003-07-10 | Memgen Corporation | Methods of and apparatus for making high aspect ratio microelectromechanical structures |
DE10249572A1 (en) * | 2002-10-24 | 2004-05-13 | Robert Bosch Gmbh | Device for galvanically coating, especially chromating, a workpiece comprises a coating chamber for receiving the workpiece, and an annular anode which interacts with the workpiece acting as a cathode |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016121397A (en) * | 2014-12-24 | 2016-07-07 | 株式会社デンソー | Plating device and production method of plating product |
US11453954B2 (en) | 2020-10-07 | 2022-09-27 | Honeywell International Inc. | Masking and sealing system for multi-step surface treatment |
Also Published As
Publication number | Publication date |
---|---|
WO2007051708A1 (en) | 2007-05-10 |
CN101300376B (en) | 2010-12-08 |
JP4928556B2 (en) | 2012-05-09 |
JP2009515050A (en) | 2009-04-09 |
BRPI0618226A2 (en) | 2011-08-23 |
CN101300376A (en) | 2008-11-05 |
DE102005052676A1 (en) | 2007-05-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ROBERT BOSCH GMBH,GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KELLER, ROLF;MAUS, HARALD;LINGNER, MICHAEL;REEL/FRAME:023382/0268 Effective date: 20080617 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |