US20110011145A1 - Method for producing profile sealing rings - Google Patents
Method for producing profile sealing rings Download PDFInfo
- Publication number
- US20110011145A1 US20110011145A1 US12/805,123 US80512310A US2011011145A1 US 20110011145 A1 US20110011145 A1 US 20110011145A1 US 80512310 A US80512310 A US 80512310A US 2011011145 A1 US2011011145 A1 US 2011011145A1
- Authority
- US
- United States
- Prior art keywords
- forming
- profile
- shape
- profile strand
- roll
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
- B21D53/18—Making other particular articles rings, e.g. barrel hoops of hollow or C-shaped cross-section, e.g. for curtains, for eyelets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
- B21D7/025—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and pulling or pushing the ends of the work
Definitions
- the invention relates to a method for producing profile sealing rings, in particular in a C-, V-, or U-shape.
- Profile sealing rings are widely used as a component of seal arrangements, in junction connections of exhaust gas-carrying lines, for example, for connections of lines to catalytic converters or cylinder heads of internal combustion engines, or for other components which carry hot gas, such as are generally found in power plant engineering. Due to the high exhaust gas temperatures which occur, the respective profile sealing ring is generally a metal component with a small wall thickness, the ring body conventionally having a profiled cross-sectional shape, for example in the form of a C-, U-, or V-profile.
- the object of the invention is to make available a method which enables especially efficient production.
- a band-shaped carrier part is formed by means of forming rolls such that not only is a profile strand of predetermined cross-sectional shape formed, i.e., with a C-, V-, or U-shaped cross section, but that the profile strand, after forming, is curved in the shape of an arc or spiral.
- the process of profiling thus also includes the formation of the curvature of the strand into the desired ring shape, so that a separate bending process for ring formation is eliminated.
- the method according to the invention therefore enables especially economical production of profile sealing rings at a high production rate.
- the method can be carried out especially advantageously such that the profile strand is formed from the carrier part which moves in the lengthwise direction in several forming stages, the forming rolls which form the last forming singe on the facing surfaces of the profile strands causing varied friction and/or deformation in order to produce the arc-shaped or spiral curvature of the profile strand which emerges from this forming stage.
- the flat carrier part is supplied by means of conveyor rollers to the first forming stage, in which the first forming roll with a convexly raised jacket part and an opposite second forming roll with a concavely depressed jacket part shape the carrier part into the preformed profile strand.
- the arrangement is such that at least one forming roll of the two forming stages can be adjusted both in the working direction and also transversely to the working direction.
- a different material thickness can be implemented in the preformed profile strand in different wall regions of the profile shape.
- a greater wall thickness than on the lateral legs can be formed; this leads to optimum strength and elasticity conditions for the finished profile sealing ring.
- the preformed profile strand of the last forming stage emerging from the first forming stage is supplied by way of guide rollers which can be adjusted transversely to the working direction.
- the last forming stage which has a third forming roll with a convexly raised jacket part and a fourth forming roll with a concavely depressed jacket part, it is possible to proceed such that not only the final profile shape is obtained, but also that by adjusting the peripheral velocities and the forming pressure in the last forming stage the arc-shaped or spiral curvature of the emerging profile strand is formed.
- One especially important advantage of the method according to the invention consists in that it is equally well-suited for production of profile sealing rings in which the profile opening is on the outside of the ring, as well as for profile sealing rings whose profile is opened into the interior of the ring.
- FIG. 1 shows a highly schematically simplified representation of a device for carrying out one exemplary embodiment of the method according to the invention
- FIG. 2 shows a broken away and a highly schematically simplified cross section of the device from FIG. 1 , according to the intersection line as indicated with II-II in FIG. 1 , and
- FIG. 3 shows a highly schematically simplified top view of the device from FIG. 1 .
- the carrier part 2 is routed in the form of a flat steel band by feed rollers 4 through a first forming stage 6 and a second forming stage 8 , the carrier part 2 being held in the middle by lateral guide rollers 10 and 12 .
- the carrier part 2 is formed by means of a first forming roll 14 and a second forming roll 16 which interacts with it into a preformed profile strand 18 from which the final profile of the finished profile strand 24 emerging from the device is formed in the second forming stage 8 by means of a third forming roll 20 and a fourth forming roll 22 which interacts with it.
- the guide rollers 10 and 12 can be positioned on carriers 26 transversely to the feed direction.
- the first forming roll 14 with the convexly raised jacket part 28 acts on the supplied carrier part 2 in the middle, see FIG. 2
- the second forming roll 16 which is the lower one in FIGS. 1 and 2
- the concavely depressed jacket part 30 deforms the carrier part 2 laterally toward the top in order to impart a cross-sectional shape in the form of a flat, widely opened C to the preformed profile strand 18 emerging from the first forming stage 6 .
- the concavely depressed jacket part 34 of the fourth forming roll 22 is made much differently from the concavely depressed jacket part 30 of the second forming roll 16 .
- the jacket part 34 of the forming roll 22 is made in the form of a narrower and more deeply machined depression, compared to the jacket part 30 of the forming roll 16 . In this way a profile shape is imparted to the finished profile strand 24 , as is schematically indicated in FIG. 1 at 36 .
- the second forming roll 16 can be positioned as indicated with the double arrow 38 in the direction to the upper forming roll 14 in order to reduce the size of the roll gap, and according to the double arrow 40 , along the working direction.
- the fourth forming roll 22 can be positioned accordingly in the direction to the pertinent forming roll 20 and along the working direction.
- the peripheral velocities of the forming rolls, at least the forming rolls 20 and 22 of the second forming stage 8 can be adjusted independently of one another.
- the forming in the second forming stage 8 can take place especially advantageously such that the material of the profile strand 18 is less stretched on the profile base than on the profile sides. This can be brought about by stronger friction in the rolling process taking effect on the profile sides by the shape and dimensioning of the interacting jacket parts of the forming rolls 20 and 22 , for example, by the depressed jacket part 34 being narrowed in the external region, so that the profile strand 24 in the outer region is more heavily stretched than in the profile base. In this way the finished profile strand 24 , relative to the curvature shown in FIG. 1 with the solid line, emerges to the top with a curvature pointed downward from the second forming stage 8 , as is shown in FIG. 1 with the broken line. As is indicated in FIG. 1 at 36 , in both instances the profile is thus opened toward different sides.
- the invention thus makes it possible to easily produce profile sealing rings with a profile that is open in the desired direction.
- profile shapes other than the illustrated C-shape can be implemented, and profile shapes can also be produced in which the side walls of the profile can be irregularly arced.
- contouring can be impressed on the outer sides or inner sides. The production process can take place continuously by the carrier part 2 being withdrawn as an endless sheet metal strip from a supply and routed through the forming stages 6 , 8 with the same working direction.
- defined lengths of the carrier part 2 can be moved by means of a linear advance device in repeated back-and-forth motion through the forming stages 6 and 8 in order to form the finished profile strand 24 in several roll steps, optionally with altered positioning of the forming rolls, especially of the rolls 16 and 22 .
- the carrier part 2 is moved as a blank in a rocking process, i.e., by motion of the blank back-and-forth through the corresponding roll pair preferably into a closed ring shape.
- the blank at the start of the rolling process has a finite length which includes the required peripheral length of the ring.
- the blank is rolled into the round shape by the rocking motion of the blank in the lengthwise direction of the strip which is stretched during the forming process.
- the several rocking processes required for this purpose preferably are carried out continuously and therefore in succession in the manner of a multistep process up to final production. Then the ring is removed from the forming device, and on the end side it is brought, for example by a welding process, into the ring shape which remains closed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Wire Processing (AREA)
Abstract
A method for producing profile sealing rings, in particular in a C-, V-, or U-shape, in which a profile strand (24) of definable cross-sectional shape is obtained from a band-shaped carrier part (2) by forming and the use of forming rolls (14, 16, 20, 22), the process of forming proceeding such that the profile strand (24) assumes at least part of an arc shape or spiral shape after forming.
Description
- The invention relates to a method for producing profile sealing rings, in particular in a C-, V-, or U-shape.
- Profile sealing rings are widely used as a component of seal arrangements, in junction connections of exhaust gas-carrying lines, for example, for connections of lines to catalytic converters or cylinder heads of internal combustion engines, or for other components which carry hot gas, such as are generally found in power plant engineering. Due to the high exhaust gas temperatures which occur, the respective profile sealing ring is generally a metal component with a small wall thickness, the ring body conventionally having a profiled cross-sectional shape, for example in the form of a C-, U-, or V-profile.
- According to the prior art shown in
document EP 2 020 541 A1, in the production of these profile sealing rings from a sheet metal strip, a ring is formed after the sheet metal strip has been cut to the length of the periphery of the ring; then the ends of the strips are welded to form a closed ring, and it is profiled by rolling. - Proceeding from this prior art, the object of the invention is to make available a method which enables especially efficient production.
- This object is achieved according to the invention by a method having the features of
claim 1 in its entirety. - Accordingly, one important particular of the invention is that a band-shaped carrier part is formed by means of forming rolls such that not only is a profile strand of predetermined cross-sectional shape formed, i.e., with a C-, V-, or U-shaped cross section, but that the profile strand, after forming, is curved in the shape of an arc or spiral. The process of profiling thus also includes the formation of the curvature of the strand into the desired ring shape, so that a separate bending process for ring formation is eliminated. The method according to the invention therefore enables especially economical production of profile sealing rings at a high production rate.
- Because the profile strand is already in an arc shape, sections of a length having a length which corresponds to the periphery of the respective profile ring to be formed can be easily connected, in particular by welding.
- The method can be carried out especially advantageously such that the profile strand is formed from the carrier part which moves in the lengthwise direction in several forming stages, the forming rolls which form the last forming singe on the facing surfaces of the profile strands causing varied friction and/or deformation in order to produce the arc-shaped or spiral curvature of the profile strand which emerges from this forming stage.
- Preferably, the flat carrier part is supplied by means of conveyor rollers to the first forming stage, in which the first forming roll with a convexly raised jacket part and an opposite second forming roll with a concavely depressed jacket part shape the carrier part into the preformed profile strand.
- Preferably, the arrangement is such that at least one forming roll of the two forming stages can be adjusted both in the working direction and also transversely to the working direction. In this way a different material thickness can be implemented in the preformed profile strand in different wall regions of the profile shape. Thus, for example, in the region of the back of a formed C- or U-profile, a greater wall thickness than on the lateral legs can be formed; this leads to optimum strength and elasticity conditions for the finished profile sealing ring.
- Preferably, the preformed profile strand of the last forming stage emerging from the first forming stage is supplied by way of guide rollers which can be adjusted transversely to the working direction.
- In order to achieve the desired arc-shaped or spiral curvature of the strand which emerges from the last forming stage, preferably in the last forming stage which has a third forming roll with a convexly raised jacket part and a fourth forming roll with a concavely depressed jacket part, it is possible to proceed such that not only the final profile shape is obtained, but also that by adjusting the peripheral velocities and the forming pressure in the last forming stage the arc-shaped or spiral curvature of the emerging profile strand is formed.
- One especially important advantage of the method according to the invention consists in that it is equally well-suited for production of profile sealing rings in which the profile opening is on the outside of the ring, as well as for profile sealing rings whose profile is opened into the interior of the ring. In this respect, according to the invention, it is possible to proceed such that the direction of the curvature is chosen in order to obtain as desired a profile strand with a profile which is opened to the inside or outside, relative to the arc shape, by the positioning and shaping of at least the fourth forming roll and setting of the peripheral speeds of at least one of the third and fourth forming rolls.
- The invention is detailed below using the drawings.
-
FIG. 1 shows a highly schematically simplified representation of a device for carrying out one exemplary embodiment of the method according to the invention; -
FIG. 2 shows a broken away and a highly schematically simplified cross section of the device fromFIG. 1 , according to the intersection line as indicated with II-II inFIG. 1 , and -
FIG. 3 shows a highly schematically simplified top view of the device fromFIG. 1 . - As
FIGS. 1 and 3 show, thecarrier part 2 is routed in the form of a flat steel band byfeed rollers 4 through a first formingstage 6 and a second formingstage 8, thecarrier part 2 being held in the middle bylateral guide rollers stage 6, thecarrier part 2 is formed by means of a first formingroll 14 and a second formingroll 16 which interacts with it into apreformed profile strand 18 from which the final profile of the finishedprofile strand 24 emerging from the device is formed in the second formingstage 8 by means of a third formingroll 20 and a fourth formingroll 22 which interacts with it. - The
guide rollers carriers 26 transversely to the feed direction. In the first formingstage 6, the first formingroll 14 with the convexly raisedjacket part 28 acts on the suppliedcarrier part 2 in the middle, seeFIG. 2 , while the second formingroll 16, which is the lower one inFIGS. 1 and 2 , with the concavelydepressed jacket part 30 deforms thecarrier part 2 laterally toward the top in order to impart a cross-sectional shape in the form of a flat, widely opened C to thepreformed profile strand 18 emerging from the first formingstage 6. While in the subsequent, second formingstage 8, the third formingroll 20 at the top inFIGS. 1 and 2 has a raisedjacket part 32 which corresponds to thejacket part 28 of the first formingroll 14, the concavelydepressed jacket part 34 of the fourth formingroll 22 is made much differently from the concavelydepressed jacket part 30 of the second formingroll 16. In the exemplary embodiment described here, in which the finishedprofile strand 24 forms a comparatively narrow C-profile, thejacket part 34 of the formingroll 22 is made in the form of a narrower and more deeply machined depression, compared to thejacket part 30 of the formingroll 16. In this way a profile shape is imparted to the finishedprofile strand 24, as is schematically indicated inFIG. 1 at 36. - For the process of preprofiling in the first forming
stage 6, in this example the second formingroll 16 can be positioned as indicated with thedouble arrow 38 in the direction to the upper formingroll 14 in order to reduce the size of the roll gap, and according to thedouble arrow 40, along the working direction. As indicated with the correspondingdouble arrows stage 8, the fourth formingroll 22 can be positioned accordingly in the direction to the pertinent formingroll 20 and along the working direction. In addition, the peripheral velocities of the forming rolls, at least the formingrolls stage 8, can be adjusted independently of one another. By setting these parameters, in the forming process in the second formingstage 8 action is applied to the material of thepreformed profile strand 18 such that material stretching on the profile base is different relative to the stretching on the side parts of the profile. This leads to a curvature of the finishedprofile strand 24 so that it leaves the second formingstage 8 in an arc shape, seeFIG. 1 . When the finishedstrand 24 is routed toward the side by thepositionable guide roller 42, theprofile strand 24forms loops 44 which are taken up in a spiral, seeFIG. 3 . For the final ring shape of the profile sealing ring, therefore only sections of length which correspond to the periphery of the profile sealing ring need be cut to length from theloops 44 and on the end side need be welded to form the finished profile sealing ring without a bending process being necessary on a straight profile strand. - The forming in the second forming
stage 8 can take place especially advantageously such that the material of theprofile strand 18 is less stretched on the profile base than on the profile sides. This can be brought about by stronger friction in the rolling process taking effect on the profile sides by the shape and dimensioning of the interacting jacket parts of the formingrolls depressed jacket part 34 being narrowed in the external region, so that theprofile strand 24 in the outer region is more heavily stretched than in the profile base. In this way the finishedprofile strand 24, relative to the curvature shown inFIG. 1 with the solid line, emerges to the top with a curvature pointed downward from the second formingstage 8, as is shown inFIG. 1 with the broken line. As is indicated inFIG. 1 at 36, in both instances the profile is thus opened toward different sides. The invention thus makes it possible to easily produce profile sealing rings with a profile that is open in the desired direction. - Depending on the deformation of the convexly raised jacket parts of the forming rolls and the concavely depressed jacket parts of the mating roll which interact with them, profile shapes other than the illustrated C-shape can be implemented, and profile shapes can also be produced in which the side walls of the profile can be irregularly arced. Likewise, contouring can be impressed on the outer sides or inner sides. The production process can take place continuously by the
carrier part 2 being withdrawn as an endless sheet metal strip from a supply and routed through the formingstages carrier part 2 can be moved by means of a linear advance device in repeated back-and-forth motion through the formingstages profile strand 24 in several roll steps, optionally with altered positioning of the forming rolls, especially of therolls - Preferably, it is also possible to obtain the illustrated profiled ring with only one pair of forming
rolls carrier part 2 is moved as a blank in a rocking process, i.e., by motion of the blank back-and-forth through the corresponding roll pair preferably into a closed ring shape. The blank at the start of the rolling process has a finite length which includes the required peripheral length of the ring. The blank is rolled into the round shape by the rocking motion of the blank in the lengthwise direction of the strip which is stretched during the forming process. The several rocking processes required for this purpose preferably are carried out continuously and therefore in succession in the manner of a multistep process up to final production. Then the ring is removed from the forming device, and on the end side it is brought, for example by a welding process, into the ring shape which remains closed.
Claims (9)
1. A method for producing profile sealing rings, in particular in a C-, V-, or U-shape, in which a profile strand (24) of definable cross-sectional shape is obtained from a band-shaped carrier part (2) by forming and use of forming rolls (14, 16, 20, 22), the process of forming proceeding such that the profile strand (24) assumes at least part of an arc shape or spiral shape after forming.
2. The method according to claim 1 , characterized in that sections of length of the profile strand (24), which is in an arc shape, are connected, in particular by welding, on the end side for forming the ring body of the profile sealing ring.
3. The method according to claim 1 or 2 , characterized in that the profile strand (24) is formed from the carrier part (2) which moves in the lengthwise direction in several forming stages (6, 8), the forming rolls (20, 22) which form the last forming stage (8) on the facing surfaces of the profile strands causing varied friction and/or deformation in order to produce the arc-shaped or spiral curvature of the profile strand (24) which emerges from this forming stage (8).
4. The method according to claim 3 , characterized in that the flat carrier part (2) is supplied by means of conveyor rollers (4) to the first forming stage (6) in which the first forming roll (14) with a convexly raised jacket part (28) and an opposite second forming roll (16) with a concavely depressed jacket part (30) shape the carrier part (2) into the preformed profile strand (18).
5. The method according to claim 4 , characterized in that at least one forming roll (14, 16, 20, 22) of the two forming stages (6, 8) can be adjusted in the working direction and transversely to the working direction to change the roll gap.
6. The method according to claim 5 , characterized in that the preformed profile strand (18) of the last forming stage (8) emerging from the first forming stage (6) is supplied by way of guide rollers (12) which can be adjusted transversely to the working direction.
7. The method according to claim 6 , characterized in that in the last forming stage (8) with a third forming roll (20) which has a convexly raised jacket part (32) and fourth forming roll (22) with a concavely depressed jacket part (34) the final profile shape is formed and by adjusting the peripheral velocities and the forming pressure in the last forming stage (8) the curvature of the emerging profile strand (24) is formed.
8. The method according to claim 7 , characterized in that the direction of curvature is chosen in order to obtain as desired a profile strand (24) with a profile which is opened to the inside or outside, relative to the arc shape, by shaping and positioning at least the fourth forming roll (22) and by setting the peripheral speed of at least one of the third (20) and fourth forming rolls (22).
9. The method according to claim 1 , characterized in that the profiled arc shape is formed from the band-shaped carrier part (2) by forming, using a pair of forming rolls (20, 22), in the manner of a rocking motion by continuous back-and-forth movement of the carrier part (2) along the pair of forming rolls (20, 22).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009033135A DE102009033135A1 (en) | 2009-07-15 | 2009-07-15 | Method for producing profiled sealing rings |
DE102009033135.2 | 2009-07-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110011145A1 true US20110011145A1 (en) | 2011-01-20 |
Family
ID=43383830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/805,123 Abandoned US20110011145A1 (en) | 2009-07-15 | 2010-07-13 | Method for producing profile sealing rings |
Country Status (3)
Country | Link |
---|---|
US (1) | US20110011145A1 (en) |
DE (1) | DE102009033135A1 (en) |
FR (1) | FR2948043A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120003783A1 (en) * | 2010-06-30 | 2012-01-05 | Malik Jr Richard S | Lead foil loop formation |
CN104624756A (en) * | 2014-12-31 | 2015-05-20 | 北京北冶功能材料有限公司 | Forming technology for metal elastic sealing ring |
CN106270094A (en) * | 2015-06-26 | 2017-01-04 | 中航空天发动机研究院有限公司 | A kind of " M " shape metal is obturaged the single pass integral forming device of ring |
US20180187218A1 (en) * | 2014-02-19 | 2018-07-05 | Xyleco, Inc. | Processing biomass |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112011105631A5 (en) | 2010-03-19 | 2015-01-15 | Elringklinger Ag | Method and device for producing profile rings |
DE102011001279A1 (en) | 2011-03-15 | 2012-09-20 | Elringklinger Ag | Method for producing profiled ring e.g. sealing ring in car, involves shaping ring into profiled ring in continuous manner along circumference of ring in sections by exerting pressure in radial direction by profiling element |
DE102015217344A1 (en) | 2015-09-10 | 2017-03-16 | Anton Kelz E.K. | Process for the production of sealing rings with deformed profile |
DE102015121459A1 (en) | 2015-12-09 | 2017-06-14 | Elringklinger Ag | Mounting device for a profiled ring |
DE102015121811A1 (en) | 2015-12-15 | 2017-07-06 | Elringklinger Ag | Profiled ring and manufacturing process |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106318A (en) * | 1974-04-10 | 1978-08-15 | Nippon Steel Corporation | Method and apparatus for rolling metallic material |
US7251978B2 (en) * | 2001-01-23 | 2007-08-07 | Sms Demag Ag | Roll stand for producing plane roll strips having a desired strip profile superelevation |
US7296452B2 (en) * | 2001-07-03 | 2007-11-20 | Hiroaki | Metallic wire for grip rings, producing method and apparatus thereof, producing method and apparatus of grip rings for tube connector with use of metallic wire and grip rings for tube connector |
US20100187767A1 (en) * | 2007-08-01 | 2010-07-29 | Carl Freudenberg Kg | Method for the production of a sealing ring |
US20120131974A1 (en) * | 2007-12-12 | 2012-05-31 | Allied Tube & Conduit Corporation | Arching metallic profiles in continous in-line process |
-
2009
- 2009-07-15 DE DE102009033135A patent/DE102009033135A1/en not_active Withdrawn
-
2010
- 2010-06-24 FR FR1002645A patent/FR2948043A1/en not_active Withdrawn
- 2010-07-13 US US12/805,123 patent/US20110011145A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106318A (en) * | 1974-04-10 | 1978-08-15 | Nippon Steel Corporation | Method and apparatus for rolling metallic material |
US7251978B2 (en) * | 2001-01-23 | 2007-08-07 | Sms Demag Ag | Roll stand for producing plane roll strips having a desired strip profile superelevation |
US7296452B2 (en) * | 2001-07-03 | 2007-11-20 | Hiroaki | Metallic wire for grip rings, producing method and apparatus thereof, producing method and apparatus of grip rings for tube connector with use of metallic wire and grip rings for tube connector |
US20100187767A1 (en) * | 2007-08-01 | 2010-07-29 | Carl Freudenberg Kg | Method for the production of a sealing ring |
US20120131974A1 (en) * | 2007-12-12 | 2012-05-31 | Allied Tube & Conduit Corporation | Arching metallic profiles in continous in-line process |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120003783A1 (en) * | 2010-06-30 | 2012-01-05 | Malik Jr Richard S | Lead foil loop formation |
US20180187218A1 (en) * | 2014-02-19 | 2018-07-05 | Xyleco, Inc. | Processing biomass |
CN104624756A (en) * | 2014-12-31 | 2015-05-20 | 北京北冶功能材料有限公司 | Forming technology for metal elastic sealing ring |
CN106270094A (en) * | 2015-06-26 | 2017-01-04 | 中航空天发动机研究院有限公司 | A kind of " M " shape metal is obturaged the single pass integral forming device of ring |
Also Published As
Publication number | Publication date |
---|---|
DE102009033135A1 (en) | 2011-01-27 |
FR2948043A1 (en) | 2011-01-21 |
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