CN108025334B - Method and apparatus for cleaning a screen for protecting an upper surface of a crankcase - Google Patents
Method and apparatus for cleaning a screen for protecting an upper surface of a crankcase Download PDFInfo
- Publication number
- CN108025334B CN108025334B CN201680051863.9A CN201680051863A CN108025334B CN 108025334 B CN108025334 B CN 108025334B CN 201680051863 A CN201680051863 A CN 201680051863A CN 108025334 B CN108025334 B CN 108025334B
- Authority
- CN
- China
- Prior art keywords
- cylindrical
- tools
- inner edge
- rotary cleaning
- cleaning apparatus
- 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.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000007751 thermal spraying Methods 0.000 claims abstract description 8
- 230000000284 resting effect Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012088 reference solution Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
- B08B1/34—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members rotating about an axis parallel to the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
- B08B1/36—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members rotating about an axis orthogonal to the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/021—Cleaning pipe ends or pipe fittings, e.g. before soldering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Coating By Spraying Or Casting (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a method for cleaning a cylindrical shutter (1) for protecting the upper surface of a crankcase during thermal spraying of an engine cylinder, which involves using a rotating device to simultaneously clean a bearing plane (1a) of the shutter (1) on the upper surface of the crankcase and the inner edge of the cylindrical shutter, which abuts against the crankcase.
Description
The invention relates to the preparation of the upper half of the crankcase of an internal combustion engine.
More particularly, the present invention relates to a cleaning mask for protecting the upper surface of the upper half of the engine crankcase at the end of the operation of thermal spraying particles on the inner surface of the cylinder barrel.
One subject of the invention is a method for cleaning a mask used in the process of thermal spraying a coating on the inside of an engine cylinder for protecting the upper surface of the upper crankcase half.
Another subject of the invention is a rotary cleaning apparatus for cleaning a cylindrical shield used to protect the upper surface of the upper crankcase half during thermal spraying of a coating in the engine cylinder.
The preparation of the inner surface of the engine cylinder is through the stage of applying a coating, which is usually thermally sprayed on the inside of the cylinder. This spray is directed towards the inner surface of the cylinder by a nozzle. However, this results in a disordered spread of particles, which are sprayed in other directions, in particular towards the upper surface of the upper crankcase half, which is not desirable. The spraying requires a protective covering (typically cylindrical in shape) to be placed over the upper surface of the upper crankcase half.
After use, these protective masks are cleaned to remove the material sprayed thereon (remaining overspray). These protective coverings are then stored for reuse. Currently, the mask is cleaned by High Pressure (HP) overspray removal. However, the quality of HP overspray removal is inconsistent and its cycle is long, as most masks must be cleaned again by hand. These operations result in additional costs. To reduce the additional cost, it is desirable to increase the life of the shields and reduce the time spent cleaning the shields.
The performance goals in the art are as follows:
● to obtain an optimum level of quality of the surface condition of the cover,
● increase the life of the covering, and
● reduce the time it takes to clean these screens.
However, the adhesion of the overspray to the veil is such that the operation requires very high pressures, of the order of 50 bar (5 MPa). Under such conditions, there is currently no known method of industrializing cleaning shades to achieve lower cost using high pressure overspray removal technology.
The present invention seeks to reduce the period of masking used to protect the upper surface of the cylinder whilst ensuring its cleanliness for the next cylinder barrel to be painted.
For this purpose, it is proposed to use a rotating device for cleaning simultaneously a bearing plane, by which the screen rests on the upper surface of the upper crankcase half, and the inner edge of the cylindrical screen, which rests on the upper crankcase half.
Preferably, the apparatus also simultaneously cleans a circular groove formed in the body of the shutter, near its inner edge.
This device is constituted by a tool holder driven in rotation, which has a housing for tools dedicated respectively to cleaning the bearing plane, the inner edge of the cylindrical screen, which screen is supported by the bearing plane on the upper surface of the upper crankcase half, the inner edge of the cylindrical screen resting on the upper crankcase half; and the tool holder has a housing for tools dedicated to cleaning a circular groove formed in the body of the shutter near its inner edge.
The invention will be better understood from a reading of the following description of one non-limiting embodiment thereof with reference to the attached drawings, in which:
figures 1A to 1D are a plan view, an elevation view, a section view and a perspective view, respectively, of a screen,
figure 2 shows the shelter after use,
figure 3 shows the area to be cleaned,
FIG. 4 illustrates a first embodiment of a removable head for a tool having a cutting insert or a tool holder brush, wherein the cutting insert or the brush is screw clamped,
FIG. 5 illustrates a second embodiment of a removable head with a brush holder or blade holder clip,
figures 6 and 7 show the removable head of figures 4 and 5 mounted on its tool holder, and
fig. 8 shows the removable head in the working position 20 on the protective screen.
The protective covering of fig. 1A-1D is placed on the upper surface of the upper crankcase half above each cylinder opening. Its support plane 1a rests around the opening of the cylinder barrel to prevent the paint product sprayed towards the inner surface of the barrel at high temperature from being sprayed on the upper surface of the upper crankcase half.
As indicated above, the screen 1 needs to be cleaned in order to eliminate the remaining overspray from its lower surface 1a before the screen can be used again. With reference to the example of figure 2 and to the enlarged view of figure 3, the areas to be cleaned on the lower surface 1a of the shutter are located on its supporting plane z1, on its slot z2 and on its inner edge z 3.
The tool holder head 2 of fig. 4 is a removable head. The removable head supports three different cleaning tools 3, 4, 6 which are clamped at their centers by screws (not depicted), a clamping hole 7 for which can be seen:
the first tool 3 is used for cleaning the support plane z1,
the second tool 4 is used to clean the tank z2,
the third tool 6 is used to clean the inner edge z3 of the screen.
The three tools 3, 4, 6 of the removable head 2 may be brushes, cutting blades or others. The head 2 is secured to the tool holder 8 (as in fig. 6 or 7) by a cylindrical shank 10, for example having a flattened region 10a which makes it easier to screw.
In the embodiment of fig. 5, again a removable tool holder head 2 of the same type is present, having three tools 3, 4, 6 of fig. 4. However, these tools are no longer screwed directly into the housing in the head 2 but are mounted on clips 3a, 4a, 6a, which are themselves fixed at their centers in the housing in the head 2 by screws.
The tool holder 8 of fig. 6 has an attachment end 11 for attachment to a rotary drive machine. The attachment end supports the removable head 2 of fig. 4, wherein the tools 3, 4, 6 are screwed directly into the housing in the removable head. In fig. 7, the tool holder receives a removable head 2 with the clips 3a, 4a, 6a of fig. 5.
Finally, fig. 8 shows a specific embodiment of the invention, in which there are only two brushes, a first brush for cleaning the bearing surface 1a of the screen and a single second brush for cleaning the groove and the inner edge of the screen.
Unlike the example shown in the figures, the tool holder 8 can have no removable head. In this case, the tool 3, 4, 6 or its mounting clip 3a, 4a, 6a is screwed directly onto the tool holder 8.
In summary, the new method for cleaning a cylindrical screen for protecting the upper surface of the upper crankcase half during thermal spraying of the engine cylinder is implemented with a rotary apparatus consisting of a tool holder body with or without a removable head having a housing into which a tool is inserted through a hole in the center of the tool or alternatively a tool holder clip is inserted through a hole in the center of the tool holder clip. The tools may be cutting blades, brushes, or a combination of both. The tool holder may or may not receive a removable tool support head. The tool is screwed directly into its housing on the tool holder or on the removable head, or alternatively is mounted in clips which are themselves screwed into the housing of the tool holder or removable head.
The device simultaneously cleans the support plane 1a via which the screen is supported on the upper surface of the upper crankcase half and the inner edge of the cylindrical screen, which abuts against the upper crankcase half. The apparatus also cleans a circular groove formed in the body of the shutter, near its inner edge.
For example, cutting inserts have cutting edges made of carbide, ceramic or CBN (cubic boron nitride), which have angles such that a variety of coating materials sprayed in the cylinder barrel can be cut. The cutting insert is removable and preferably reversible in order to increase its lifetime. The brush is also removable. The brush is made of nylon, steel or composite materials.
The reference solution is a three-blade cleaning device. However, according to the non-limiting illustrations above, the invention covers other embodiments and alternatives thereof, in particular selected from the following list:
a rotary cleaning device with two cutting blades and a brush,
a rotating cleaning device with three brushes,
a rotary cleaning device with one blade and two brushes,
a rotary cleaning device with two blades and one brush for the inner edge or groove.
Rotary cleaning devices with one cutting blade (or one brush) for the bearing surface of the screen and a common brush for the slot and the inner edge.
Claims (14)
1. A method for cleaning a cylindrical shield (1) for protecting the upper surface of the upper crankcase half during thermal spraying of the cylinder barrel of an engine, characterized in that, by using a rotating device, the support plane (1a) of the cylindrical shield, the inner edge of the cylindrical shield, and a circular groove formed in the body of the cylindrical shield (1) near its inner edge, via which support plane the cylindrical shield (1) rests on the upper surface of the upper crankcase half, are all cleaned simultaneously.
2. A rotary cleaning device for cleaning a cylindrical shield for protecting an upper surface of an upper crankcase half during thermal spraying of a cylinder barrel of an engine, characterized in that the rotary cleaning device is constituted by a tool holder (8) having housings for tools (3, 4, 6) dedicated to cleaning a support plane (1a) of the cylindrical shield, respectively, an inner edge of the cylindrical shield via which the cylindrical shield (1) is supported on the upper surface of the upper crankcase half, and a circular groove in the body of the cylindrical shield formed near its inner edge, the inner edge of the cylindrical shield resting on the upper crankcase half.
3. The rotary cleaning apparatus as claimed in claim 2, characterized in that the tools (3, 4, 6) are screwed directly into their housing on the tool holder (8).
4. The rotary cleaning apparatus as claimed in claim 2, characterized in that the tools (3, 4, 6) are mounted in clips (3a, 4a, 6a) which are screwed into the housing of the tool holders (8).
5. A rotary cleaning device for cleaning a cylindrical shield used to protect the upper surface of the upper crankcase half during thermal spraying of the cylinder barrel of an engine, characterized in that the rotary cleaning apparatus is constituted by a tool holder (8) receiving a removable head (2) for supporting a tool (3, 4, 6), the tool holder has a housing for tools (3, 6, 4) which are dedicated to cleaning the support plane (1a) of the cylindrical shutter, the inner edge of the cylindrical shutter and the circular groove, respectively, the cylindrical screen (1) is supported on the upper surface of the upper crankcase half via the support plane, the inner edge of the cylindrical shutter rests on the upper crankcase half, and the circular groove is formed in the body of the cylindrical shutter near its inner edge.
6. The rotary cleaning apparatus as claimed in claim 5, characterized in that the tools (3, 4, 6) are screwed directly into their housing on the tool holder (8).
7. The rotary cleaning apparatus as claimed in claim 5, characterized in that the tools (3, 4, 6) are screwed directly into their housing on the removable head (2).
8. The rotary cleaning apparatus as claimed in claim 5, characterized in that the tools (3, 4, 6) are mounted in clips (3a, 4a, 6a) which are screwed into the housing of the tool holders (8).
9. The rotary cleaning apparatus as claimed in claim 5, characterized in that the tools (3, 4, 6) are mounted in clips (3a, 4a, 6a) which are screwed into the housing of the removable head (2).
10. The rotary cleaning apparatus as claimed in one of claims 2 to 9, characterized in that the tools (3, 4, 6) are cutting blades.
11. A rotary cleaning apparatus as claimed in any one of claims 2 to 9, characterized in that the tools are brushes.
12. The rotary cleaning apparatus as claimed in one of claims 2 to 9, characterized in that some of the tools (3, 4, 6) are cutting blades and some are brushes.
13. The rotary cleaning apparatus as claimed in claim 11, characterized in that it comprises two brushes, one for cleaning the support plane (1a) on which the cylindrical shutter rests and another single brush for cleaning the slot and the inner edge of the cylindrical shutter.
14. The rotary cleaning apparatus as claimed in claim 12, characterized in that it comprises two brushes, one for cleaning the support plane (1a) on which the cylindrical shutter rests and another single brush for cleaning the slot and the inner edge of the cylindrical shutter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1558440A FR3040901B1 (en) | 2015-09-10 | 2015-09-10 | METHOD AND APPARATUS FOR CLEANING UPPER FACE PROTECTION MASKS OF CYLINDER HOUSING |
| FR1558440 | 2015-09-10 | ||
| PCT/FR2016/052187 WO2017042459A1 (en) | 2015-09-10 | 2016-09-05 | Method and apparatus for cleaning masks for protecting the upper surface of a crankcase |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108025334A CN108025334A (en) | 2018-05-11 |
| CN108025334B true CN108025334B (en) | 2021-10-12 |
Family
ID=54356587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680051863.9A Active CN108025334B (en) | 2015-09-10 | 2016-09-05 | Method and apparatus for cleaning a screen for protecting an upper surface of a crankcase |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3347144B1 (en) |
| JP (1) | JP6622906B2 (en) |
| CN (1) | CN108025334B (en) |
| FR (1) | FR3040901B1 (en) |
| WO (1) | WO2017042459A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646703B (en) * | 2022-11-07 | 2023-05-30 | 哈尔滨职业技术学院 | Car body paint spraying equipment |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2635281B1 (en) * | 1988-08-12 | 1990-10-19 | Srti Soc Rech Tech Ind | METHOD FOR CLEANING HOLES AND FABRICATION DEVICES |
| JP2989357B2 (en) * | 1991-11-22 | 1999-12-13 | 三菱重工業株式会社 | Nozzle cleaning device for welding torch |
| EP1141438B1 (en) * | 1998-12-18 | 2003-03-26 | Volkswagen Aktiengesellschaft | Auxiliary device for thermally coating the surfaces of an inner area |
| US6395090B1 (en) * | 1999-08-16 | 2002-05-28 | Ford Global Technologies, Inc. | Masking for engine blocks for thermally sprayed coatings |
| EP1772671A1 (en) * | 2005-10-08 | 2007-04-11 | INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH | Cleaning station for a robot-assisted or automated burner |
| SE530788C2 (en) * | 2007-01-17 | 2008-09-09 | Sandvik Intellectual Property | Rotatable multi-operation tool for chip separating machining, and basic body for this |
| DE102007037464B4 (en) * | 2007-08-08 | 2010-09-09 | Audi Ag | Cutting tool for machining workpiece surfaces |
| SG182782A1 (en) * | 2010-01-29 | 2012-09-27 | Univ Singapore | Modular shelter |
| JP6167897B2 (en) * | 2013-12-27 | 2017-07-26 | トヨタ自動車株式会社 | Masking for cylinder bore spraying |
| CN104588251B (en) * | 2015-02-13 | 2019-04-26 | 中冶京诚工程技术有限公司 | Powder shelters from and cleaning device in electrostatic powder spraying |
-
2015
- 2015-09-10 FR FR1558440A patent/FR3040901B1/en active Active
-
2016
- 2016-09-05 EP EP16775773.1A patent/EP3347144B1/en active Active
- 2016-09-05 JP JP2018512361A patent/JP6622906B2/en active Active
- 2016-09-05 WO PCT/FR2016/052187 patent/WO2017042459A1/en active Application Filing
- 2016-09-05 CN CN201680051863.9A patent/CN108025334B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017042459A1 (en) | 2017-03-16 |
| FR3040901A1 (en) | 2017-03-17 |
| EP3347144A1 (en) | 2018-07-18 |
| EP3347144B1 (en) | 2023-05-17 |
| JP6622906B2 (en) | 2019-12-18 |
| FR3040901B1 (en) | 2019-05-17 |
| JP2018535082A (en) | 2018-11-29 |
| CN108025334A (en) | 2018-05-11 |
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