EP2981373B1 - Procédé et dispositif de formage pour un corps façonné en fil, ainsi que corps façonné en fil - Google Patents
Procédé et dispositif de formage pour un corps façonné en fil, ainsi que corps façonné en fil Download PDFInfo
- Publication number
- EP2981373B1 EP2981373B1 EP14714745.8A EP14714745A EP2981373B1 EP 2981373 B1 EP2981373 B1 EP 2981373B1 EP 14714745 A EP14714745 A EP 14714745A EP 2981373 B1 EP2981373 B1 EP 2981373B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- intermediate product
- wire
- compression
- shaping
- punch
- 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
- 238000000034 method Methods 0.000 title claims description 29
- 239000013067 intermediate product Substances 0.000 claims description 30
- 238000007906 compression Methods 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims description 28
- 238000007493 shaping process Methods 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000009940 knitting Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000005304 joining Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 3
- 239000002243 precursor Substances 0.000 description 49
- 238000000465 moulding Methods 0.000 description 14
- 230000004323 axial length Effects 0.000 description 11
- 239000000047 product Substances 0.000 description 9
- 238000005056 compaction Methods 0.000 description 4
- 239000000543 intermediate Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K23/00—Making other articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F27/00—Making wire network, i.e. wire nets
- B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
- B21F27/18—Making special types or portions of network by methods or means specially adapted therefor of meshed work for filters or sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
Definitions
- the invention relates to a method for producing a shaped wire body, according to the preamble of claim 1 (see. EP 0 370 734 A2 ), in which a precursor made of at least one wire is compressed by a forming device in the axial direction, wherein the precursor at least partially radially outwardly against a negative mold of the forming device is expanded such that it gets its final outer shape. Furthermore, the invention relates to a forming device according to the preamble of claim 9 (see. EP 0 370 734 A2 ,
- shaped wire bodies has long been known.
- a precursor made of wire for example, a wire-knitted tube portion, a wire-wound or wire-wound wire-wound wire cylinder, or the like, is provided as a preliminary product.
- semi-finished products are understood that have already been plastically deformed in upstream forming steps, for example, to specifically form material compaction, but not yet have their final shape.
- the precursor is reshaped by means of plastic deformation in a correspondingly formed forming device for the finished wire shaped body.
- the shaping device is for this purpose equipped with a negative mold which is complementary to the finished outer shape of the finished wire shaped body.
- the shaped wire body varies in its compression over its axial length and thus, for example, in its flow resistance when the shaped wire body is used, for example, as a filter insert.
- this object is achieved by a method having the features according to claim 1 and in particular by the fact that the negative mold is at least partially axially carried along during the upsetting so that frictional forces are prevented at least between the widening section of the preliminary product and the moving section of the negative mold, the frictional forces are reduced at least but with respect to the axial movement of the precursor, which undergoes the precursor during compression, are reduced. Furthermore, the object is achieved by a forming device with the features of claim 9.
- the negative mold axially at least in sections during the compression of the preliminary product such that frictional forces occur at least between the widening section of the preliminary product prevented, but at least reduced. Due to the fact that frictional forces between the outer surface of the precursor and the inner surface of the negative mold, against which the precursor is indeed formed avoided or at least reduced, the problems described above no longer or only to such a small extent that unintentional support by the expanded portions of the precursor during axial upsetting no longer occurs. This ensures that the not yet expanded portions of the precursor can still be compressed and thereby in turn radially expanded, which also unfold these sections due to the moving negative form also no support effect that counteracts the upsetting process. As a result, then the finished end product, namely the wire shaped body produced by the method according to the invention has a uniform compression over its axial length.
- the uniform compression of the shaped wire body is for a variety of reasons of great advantage, since, for example, when using the wire shaped body as a filter for a mass flow, for example, a liquid or gas stream to flow through the wire shaped body, the wire shaped body over its entire length and also over his Cross section has at least approximately constant flow resistance.
- a precursor which has an opening extending in the axial direction, preferably a through opening into which a support element, for example a rod with a round or polygonal cross section, is inserted prior to upsetting.
- a support element for example a rod with a round or polygonal cross section
- a precursor is processed which has a comparatively large axial extent
- a negative mold which is formed from two sectionally intermeshing form elements.
- the form elements are designed so that during the compression process at least one of Forming elements is entrained and thereby comes into engagement with the other mold member such that the mutually engaging portions of the mold elements form an at least approximately closed support surface against which the radially expanding portions of the precursor are formed during the upsetting.
- a cut-off wheel extending transversely to the longitudinal direction is intended to be provided in the finished wire shaped body, which divides a through opening extending through the wire shaped body.
- the cutting disc is used, which is held pressed by the compression of the precursor and the associated compression and expansion of the precursor both outwardly and inwardly in the finished wire molding.
- a particularly preferred variant of the method according to the invention is further proposed to preform an elongated wire initially in the form of a helical helical structure and insert the helically preformed wire in the forming device for forming the precursor and then transform the precursor by means of the forming device to form the wire molding.
- a conventional wire is preformed initially in the form of a helical helical structure, the term "helical helical structure" in the present application being understood to mean a single or multi-start cylindrical spiral or helix.
- This spirally preformed wire is then inserted directly into the forming device, wherein the preformed wire forms the precursor only in the forming device. After the wire has been cut off, the wire section inserted as a precursor in the shaping device is finally shaped into the shaped wire body with the aid of the shaping device. It should be noted that the wire is either separated during insertion into the forming device, or has already been separated before insertion into the forming device and is inserted as a wire section in the forming device.
- This variant of the method according to the invention eliminates a large number of upstream manufacturing steps that have hitherto been customary in conventional production methods, such as preparing the wires prior to knitting, weaving or knitting, knitting, weaving or knitting the wires into continuous intermediates and separating individual sections from the continuous intermediates or the unpacking and cleaning of the previously separated from the continuous intermediate hose and mat sections.
- a wire with polygonal, preferably rectangular or square cross-section is particularly advantageous in the inventive method.
- the length of necessary wire can be reduced compared to conventional wire shaped bodies of wires with a round cross-section, while still a due to the intrinsically unfavorable flow behavior of the wires with angular cross-section can be maintained approximately constant flow resistance.
- a wire shaped body which is made of a round wire with a wire diameter of one millimeter and a length of 1000 mm
- a wire shaped body according to the invention when using for example a cross-sectionally square wire with an edge length of 0 in each case.
- 89 mm only a length of 678 mm, resulting in a weight saving of approximately 32%.
- With a cross-sectionally square wire with an edge length of 0.6 mm and a length of 1000 mm results in a weight saving of approximately 55% with approximately the same flow resistance.
- a wire which has a rectangular or square cross-sectional shape, since these cross-sectional shapes can be made easily by pulling the wire.
- the wire shaped body retains its outer shape after upsetting, in particular when precursors of very fine wires were used for the production, it is proposed in a further variant of the method, the outer surface of the wire shaped body in sections by joining, ie by welding or soldering, to be firmly connected to further inner layers of the wire shaped body.
- the invention relates to a forming device for forming an intermediate product made of at least one wire in a wire shaped body, in particular using the method mentioned above.
- the shaping device has a negative mold, at least one forming punch which can be moved axially to compress the precursor and which cooperates with the negative mold for forming the intermediate product into the wire shaped body, and a housing for the forming punch and the negative mold.
- the negative mold together with the forming die is movable in such a way that frictional forces are prevented at least between the portion of the precursor which is expanding during the axial compression of the precursor and the moving portion of the negative mold, but the frictional forces are at least opposite the axial movement of the precursor. which undergoes the precursor during compression, are reduced.
- the negative mold has at least one mold element which cooperates with the forming punch during forming together with the forming punch and which is displaceably mounted in the housing and is adjustable together with the forming punch.
- the mold element can be adjusted either independently of the forming die.
- the mold element is firmly connected to the forming die and is carried along with the forming die.
- the mold element can be integrally or detachably connected to the forming die. The latter is advantageous if the forming device has to be quickly converted to different shaped wire bodies.
- the negative mold has two interlocking interlocking mold elements which move axially into one another during upsetting such that the already intermeshing sections of the molded elements form an at least approximately closed support surface which forms during molding the wire shaped body radially expanding portions of the precursor is supported.
- each forming element is associated with a forming die, which with the respective associated mold element for forming the wire shaped body interacts.
- both mold elements are movable, while only one forming die is provided, and the precursor is supported on its opposite end of the forming die in the housing.
- two forming punches are provided, wherein the respective form element projects from the end face of each forming punch.
- the forming dies are displaceably mounted in the housing along a common longitudinal axis and movable toward or away from one another.
- the two form elements are provided with complementary cooperating support fingers, which move axially together during the movement of the forming die, that the already engaged sections of the support fingers form an at least approximately closed support surface for the arranged between the Umformstempeln intermediate product.
- a wire shaped body of at least one wire which flows through a mass flow, as a liquid flow or a gas flow, and which has a predetermined average flow resistance, viewed in relation to its axial flow, in a range of maximum ⁇ 5%, preferably within a range of maximum ⁇ 2.5% over the axial length.
- FIG. 1a to c is a schematic representation of a first embodiment of a forming device 10 according to the invention shown in different operating positions.
- the forming device 10 has a housing 12 which rests on a base plate 14.
- a lower punch 16 is arranged, which is releasably secured to the base plate 14.
- a negative mold 18 is further slidably received, which is guided in its lower portion on the lower punch 16.
- an upper punch 20 is slidably supported by means of an actuator (not shown) between a raised position in which he has moved out of the housing 12 and a lowered position in the direction of the lower punch 16 to move is.
- a support member 22 is further held in the form of a cylindrical rod.
- the support element 22 projects beyond the negative mold 18 into a receiving opening 24 formed in the upper punch 20.
- the negative mold 18 is also adjustable by means of an actuator (not shown) and, as will be explained later, is moved together with the upper punch 20 in the longitudinal direction of the housing 12 to and fro.
- the forming process is shown, which will be explained in more detail below.
- the upper punch 20 is moved to its raised position, in which the closed by the female mold 18 forming space 26 is opened.
- a hollow cylindrical preform 28 is inserted into the forming space 26 in this embodiment, wherein the precursor 28 is pushed onto the support member 22.
- the precursor 28 is a tube section knitted from a wire.
- the upper punch 20 is moved together with the female mold 18 in the direction of the lower punch 16, wherein the precursor 28 is compressed in its axial longitudinal direction.
- the movement of the negative mold 18 is adapted to the movement of the punch 20 so that the widening portions of the precursor 28, which arise during the upsetting process, with respect to the inner surface of the female mold 18 no, or at best experience a slight relative movement.
- This intermediate position is in Fig. 1b shown.
- the upper punch 20 is now moved so far down until the precursor 28 is formed into its desired compressed final shape and the finished wire molded body 30 is formed, as in the Fig. 1c shown end position is recognizable.
- any resulting frictional forces between the inner wall of the female mold 18 and the outer surface of the precursor 28 are eliminated.
- Fig. 2 is a schematic representation of a diagram in which, based on the finished end product, namely the wire molding 30, the compression over the axial length of the wire molding 30 is recorded. Like the diagram too can be seen, the wire molding 30 shows over its axial length considered an at least approximately constant compression.
- the forming device 40 has a two-part housing 42 with a continuous axial bore 44.
- the axial bore 44 two identically formed forming punch 46 are slidably received, with reference to the FIGS. 7 and 8 briefly explained below.
- Fig. 7 shows a perspective view of the forming die 46.
- the forming punch 46 has a cylindrical flange 48, from the center concentrically a hollow cylindrical punch portion 50 protrudes.
- a total of four support fingers 52 are arranged evenly distributed (see. Fig. 8 ), which are fixedly connected to the stamp portion 50 and project beyond this in the axial direction.
- the support fingers 52 are identical and designed as segments of a hollow cylinder. Viewed in the circumferential direction (cf. Fig. 8 ), the support fingers 52 are dimensioned so that in each case a recess 54 is maintained, wherein the distance between each two adjacent support fingers 52 is slightly larger than the radians of each support finger 52nd
- the two forming dies 46 are slidably receivable in the axial bore 44, wherein the forming die 46 are rotated relative to each other, that each of the support fingers 52 of a forming die 46 in the recess 54 of the other forming die 46 can be inserted.
- the preliminary product 56 which is a tube section knitted from a wire, is first drawn onto a support element 58. Subsequently, the support member 58 is introduced with the raised precursor 56 in the space formed by the support fingers 52 of the forming die 46. Thereafter, the forming die 46 are moved toward each other, wherein, as previously described, the support fingers 52 of a forming die 46 engage in the recesses 54 of the other forming die 46 and vice versa.
- the support element 58 is inserted from the one forming punch 46 inwardly into the bore 44 until the pre-product 56 mounted on the support element 58 rests with its two end faces against the end faces of the stamping portions 50 of the forming punch 46.
- the two forming dies 46 are moved further inward, wherein the precursor 56 is compressed axially. Due to the fact that the frictional forces arising on the support fingers 52 of the forming dies 46 moving towards each other are opposite, they lift up so that the precursor 56 experiences a uniform compression over its axial length.
- the support fingers 52 are moved axially into one another such that the sections of the support fingers 52 already in engagement form an at least approximately closed support surface for the intermediate product 56 arranged between the forming dies 46.
- the forming dies 46 have arrived in their end positions, in which they rest with their flanges 48 at the two end faces of the housing 42, shaping of the wire shaped body 60 is completed. Subsequently, the two forming dies 46 are moved apart again, the housing 42 moved apart and ejected the finished wire shaped body 60 together with the support member 58 from the housing 42.
- a spacer sleeve 62 is pushed onto the support fingers 52 and the punch portion 50 of the forming die 46, which limits the insertion movement of the forming die 46, if the respective spacer sleeve 62 on the front side of the housing 42nd comes to the plant, as in Fig. 6 shown an enlarged detail view of the in Fig. 4 left end of the forming device 40th
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Claims (12)
- Procédé de fabrication d'un corps façonné en fil (30 ; 60), dans lequel un produit préliminaire (28 ; 56) fabriqué à partir d'au moins un fil est refoulé en direction axiale par un moyen de formage, et le produit préliminaire est évasé au moins localement radialement vers l'extérieur contre un moule négatif (18) du moyen de formage de manière à obtenir sa forme extérieure définitive,
caractérisé en ce que
pendant le refoulement, le moule négatif (18) est amené au moins localement axialement de telle sorte que des forces de friction au moins entre la portion du produit préliminaire (28 ; 56) en cours d'évasement et la portion du moule négatif (18) en mouvement sont supprimées, ou alors les forces de friction sont au moins réduites par rapport au mouvement axial du produit préliminaire (28 ; 56) que subit le produit préliminaire pendant le refoulement. - Procédé selon la revendication 1,
caractérisé en ce que
le produit préliminaire (28 ; 56) présente une ouverture s'étendant en direction axiale, de préférence une ouverture de passage dans laquelle, avant le refoulement, un élément de soutien (22) est inséré, qui soutient depuis l'intérieur le produit préliminaire (28 ; 56) pendant le refoulement. - Procédé selon la revendication 1 ou 2,
caractérisé en ce que
le moule négatif (18) est réalisé par deux éléments de formage qui s'engagent localement l'un dans l'autre et qui, lors du refoulement, se déplacent axialement l'un dans l'autre de telle sorte que les portions des éléments de formage qui sont déjà en engagement mutuel constituent une surface au moins approximativement fermée contre laquelle sont formées les portions du produit préliminaire (28 ; 56) qui s'évasent radialement pendant le refoulement. - Procédé selon la revendication 1, 2 ou 3,
caractérisé en ce que
le produit préliminaire (28 ; 56) réalisé de préférence par tricotage, tissage ou entrelacement présente une ouverture de passage qui s'étend en direction longitudinale axiale à travers le produit préliminaire (28 ; 56) et dans laquelle est inséré, avant le refoulement, un disque de séparation disposé transversalement à la direction longitudinale axiale, qui, par le refoulement du produit préliminaire (28 ; 56), est inséré par formage dans le corps façonné en fil (30 ; 60) fini. - Procédé selon l'une des revendications précédentes,
caractérisé en ce que
le produit préliminaire (28 ; 56) est fabriqué à partir d'un ensemble tissé, entrelacé ou tricoté en fil, réalisé en premier fil, et à partir d'un ensemble tricoté, tissé ou entrelacé de renforcement, réalisé en un second fil plus épais que le premier fil. - Procédé selon l'une des revendications précédentes,
caractérisé en ce que
le produit préliminaire (28 ; 56) est réalisé du fait qu'au moins un fil allongé est tout d'abord préformé sous la forme d'une structure hélicoïdale en spirale, le fil préformé en spirale est ensuite inséré dans le dispositif de formage pour réaliser le produit préliminaire, et le produit préliminaire est alors formé à l'aide du dispositif de formage pour donner le corps façonné en fil. - Procédé selon l'une des revendications précédentes,
caractérisé en ce que
ledit au moins un fil présente une section transversale polygonale, de préférence rectangulaire ou carrée. - Procédé selon l'une des revendications précédentes,
caractérisé en ce que
des portions de la surface extérieure du corps façonné en fil (30 ; 60) formé sont fermement reliées les unes aux autres par assemblage. - Dispositif de formage pour former un produit préliminaire (28 ; 56) fabriqué à partir d'au moins un fil pour donner un corps façonné en fil (30 ; 60), comportant un moule négatif (18), au moins un poinçon de formage (18 ; 46) qui est mobile pour le refoulement axial du produit préliminaire (28 ; 56) et qui coopère avec le moule négatif (18) pour former le produit préliminaire (28 ; 56) en le corps façonné en fil (30 ; 60), et un boîtier (12 ; 42) pour le poinçon de formage (18 ; 46) et pour le moule négatif (18),
caractérisé en ce que
le moule négatif (18) est mobile conjointement avec le poinçon de formage (18 ; 46) axialement vers le boîtier (12 ; 42) de telle sorte que des forces de friction au moins entre la portion du produit préliminaire (28 ; 56) en cours d'évasement pendant le refoulement axial du produit préliminaire (28 ; 56) et la portion du moule négatif (18) en mouvement sont supprimées, ou alors les forces de friction sont au moins réduites par rapport au mouvement axial du produit préliminaire (28 ; 56) que subit le produit préliminaire (28 ; 56) pendant le refoulement. - Dispositif de formage selon la revendication 9,
caractérisé en ce que
le moule négatif comprend au moins un élément de formage (52) qui coopère avec le poinçon de formage (46) pendant le refoulement pour démouler le corps façonné en fil (60) et qui est monté mobile en translation dans le boîtier (42) et est déplaçable conjointement avec le poinçon de formage (46). - Dispositif de formage selon la revendication 9 ou 10,
caractérisé en ce que
le moule négatif comprend deux éléments de formage (52) qui s'engagent localement l'un dans l'autre et qui, lors du refoulement, se déplacent axialement l'un dans l'autre de telle sorte que les portions des éléments de formage (52) qui sont déjà en engagement mutuel constituent une surface au moins approximativement fermée qui soutient les portions du produit préliminaire (56) en cours d'évasement radial pendant le démoulage du corps façonné en fil (60), en ce que
une portion de poinçon (50) du poinçon de formage (46) est associée à chaque élément de formage (52), et en ce que
les éléments de formage (52) et les poinçons (50) coopèrent pour démouler le corps façonné en fil (60). - Dispositif de formage selon la revendication 11,
caractérisé en ce que
l'élément de formage respectif fait saillie à proximité de la face frontale de que portion de poinçon (50) du poinçon de formage (46), en ce que les poinçons de formage (46) sont montés mobiles en translation le long d'un axe longitudinal commun dans le boîtier (42) et sont mobiles l'un vers l'autre ou en éloignement l'un de l'autre, et en ce que les deux éléments de formage sont pourvus de doigts de soutien (52) coopérant de façon complémentaire, qui, lors du rapprochement mutuel des poinçons de formage (46), se déplacent axialement l'un dans l'autre de telle sorte que les portions des doigts de soutien (52) qui sont déjà en engagement mutuel constituent une surface de soutien au moins approximativement fermée pour le produit préliminaire (56) disposé entre les poinçons de formage (46).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013005685.3A DE102013005685A1 (de) | 2013-04-03 | 2013-04-03 | Verfahren und Umformeinrichtung für einen Drahtformkörper sowie Drahtformkörper |
PCT/EP2014/056722 WO2014161950A1 (fr) | 2013-04-03 | 2014-04-03 | Procédé et dispositif de formage pour un corps façonné en fil, ainsi que corps façonné en fil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2981373A1 EP2981373A1 (fr) | 2016-02-10 |
EP2981373B1 true EP2981373B1 (fr) | 2019-10-09 |
Family
ID=50424281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14714745.8A Active EP2981373B1 (fr) | 2013-04-03 | 2014-04-03 | Procédé et dispositif de formage pour un corps façonné en fil, ainsi que corps façonné en fil |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2981373B1 (fr) |
DE (1) | DE102013005685A1 (fr) |
WO (1) | WO2014161950A1 (fr) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2604841A1 (de) * | 1976-02-07 | 1977-08-11 | Andreas Weissfloch | Verfahren zur herstellung von einfach- oder mehrschichtsieben |
DE3333140A1 (de) * | 1983-09-14 | 1985-04-04 | Riedel-Technik Gmbh, 5657 Haan | Verfahren zum herstellen eines trennsiebes und das nach dem verfahren hergestellte trennsieb |
JPS6393440A (ja) * | 1986-10-07 | 1988-04-23 | Chuo Spring Co Ltd | 金属ワイヤ圧縮成形品の成形方法 |
EP0370734B1 (fr) * | 1988-11-24 | 1995-02-22 | Ngk Insulators, Ltd. | Filtre pour producteur de gaz et procédé de fabrication |
JPH02253060A (ja) * | 1989-03-24 | 1990-10-11 | Nippon Pillar Packing Co Ltd | ガスケット及びその製造方法 |
JPH0716743B2 (ja) * | 1989-11-21 | 1995-03-01 | 日本碍子株式会社 | 金属線材積層圧縮体の製造装置 |
NL9302237A (nl) * | 1993-12-22 | 1995-07-17 | Stork Screens Bv | Zeefmateriaal uit draad, werkwijze voor het vervaardigen daarvan, en een huls, die uit een dergelijk zeefmateriaal is vervaardigd. |
US5849054A (en) * | 1995-10-31 | 1998-12-15 | Nippon Reinz Co., Ltd. | Filter for an inflator |
-
2013
- 2013-04-03 DE DE102013005685.3A patent/DE102013005685A1/de not_active Ceased
-
2014
- 2014-04-03 WO PCT/EP2014/056722 patent/WO2014161950A1/fr active Application Filing
- 2014-04-03 EP EP14714745.8A patent/EP2981373B1/fr active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
DE102013005685A1 (de) | 2014-10-09 |
WO2014161950A1 (fr) | 2014-10-09 |
EP2981373A1 (fr) | 2016-02-10 |
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