EP1872881A2 - Method and device for embossing a drum cover - Google Patents

Method and device for embossing a drum cover Download PDF

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Publication number
EP1872881A2
EP1872881A2 EP20070110034 EP07110034A EP1872881A2 EP 1872881 A2 EP1872881 A2 EP 1872881A2 EP 20070110034 EP20070110034 EP 20070110034 EP 07110034 A EP07110034 A EP 07110034A EP 1872881 A2 EP1872881 A2 EP 1872881A2
Authority
EP
European Patent Office
Prior art keywords
embossing
drum
drum casing
drum shell
embossed
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.)
Granted
Application number
EP20070110034
Other languages
German (de)
French (fr)
Other versions
EP1872881A3 (en
EP1872881B1 (en
Inventor
Bernhard Tellen
Marcus Exler
Uwe Ratfisch
Thorsten Tillack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgaraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE102006029951A priority Critical patent/DE102006029951A1/en
Application filed by BSH Bosch und Siemens Hausgaraete GmbH filed Critical BSH Bosch und Siemens Hausgaraete GmbH
Publication of EP1872881A2 publication Critical patent/EP1872881A2/en
Publication of EP1872881A3 publication Critical patent/EP1872881A3/en
Application granted granted Critical
Publication of EP1872881B1 publication Critical patent/EP1872881B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02Stamping using rigid devices or tools
    • B21D22/04Stamping using rigid devices or tools for dimpling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15Making tubes of special shape; Making tube fittings
    • B21C37/156Making tubes with wall irregularities
    • B21C37/158Protrusions, e.g. dimples
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02Stamping using rigid devices or tools
    • B21D22/025Stamping using rigid devices or tools for tubular articles
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02Rotary receptacles, e.g. drums
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02Rotary receptacles, e.g. drums
    • D06F37/04Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06Ribs, lifters, or rubbing means forming part of the receptacle
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02Rotary receptacles, e.g. drums
    • D06F37/04Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/08Partitions
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02Rotary receptacles, e.g. drums
    • D06F37/12Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
    • D06F37/16Partitions

Abstract

The procedure for introducing an embossing structure (3) into a metallic drum casing (1) of a washing drum, comprises positioning the drum casing, operationally locking the drum casing, and embossing the drum casing. The embossing pressure producing the embossing structure in the drum casing is exercised between the embossing structure consisting of a pressure drive and a supporting element. The supporting element is provided at a bearing surface with a die consisting of the counter structure. The cylindrically curved drum casing is held in a fixed position during the embossing process. The procedure for introducing an embossing structure (3) into a metallic drum casing (1) of a washing drum, comprises positioning the drum casing, operationally locking the drum casing, and embossing the drum casing. The embossing pressure producing the embossing structure in the drum casing is exercised between the embossing structure consisting of a pressure drive and a supporting element. The supporting element is provided at a bearing surface with a die consisting of the counter structure. The cylindrically curved drum casing is held in a fixed position during the embossing process. The drum casing is brought by turning and/or axially shifting into the intended embossing positions. The pressure forces exercised in the embossing on the drum casing mutually repeal themselves in the sum. Different embossing structures are produced in controlled manner. The drum casing is positioned over recesses, which has a typical function for the drum casing. An independent claim is included for a device for introducing an embossing structure into a metallic drum casing of a washing drum.

Description

  • The invention relates to a method for introducing embossing into a metallic drum shell, in particular for introducing embossed structures into a drum shell or the lateral surface of a laundry drum, as well as a device for implementing the method. Hereinafter, without excluding the application of the invention to other areas, reference is made only to laundry drums.
  • Laundry drums of the type in question are provided in the lateral surface or the drum shell with a plurality of holes, which serve the liquid exchange during the washing or drying process. To optimize the washing process, symmetrically distributed drivers are arranged on the inner wall of the drum shell, through which the laundry is mechanically treated during the rotational movement of the drum.
  • There are known laundry drums, the drum casing are provided between the receptacles for the driver with imprints that are designed differently for the purpose of greater mechanical strength of the drum and / or to achieve a special washing technology objective position by the manufacturers.
  • For introducing such embossments in the drum plate of laundry drums methods and devices have been developed in which the desired embossments are introduced into a flat sheet metal blank and then the embossed metal sheet is rolled to form a drum shell cylinder. These methods have disadvantages, the use of the method is limited. The embossments introduced in the plane are partially changed during the subsequent bending process, specifically in the tangential direction more strongly than in the axial direction. Especially with deep imprints, the, z. Example, be introduced to increase the dimensional stability in the drum cylinder, this method is not applicable. In addition, the possibilities for introducing circumferentially extending, long embossed structures are severely limited. In any case, a drum shell produced in this way is out of round, especially polygonal, which neither the aesthetic shape nor the other Processing with changes in shape (rolling, folding, etc.) is conducive.
  • In order to avoid such defects, improved processes have been developed in which embossments are introduced into a cylinder jacket rolled drum. In the DE 199 54 027 C2 a method of this kind is described. In the known method, the drum cylinder, which has been rolled into a hollow cylinder in an upstream production step, is subjected to the embossing pressure in a rotary motion and guided between a pressure roller with a flexible jacket and a roller provided with support elements. Due to the different rotational speeds between the rollers and the drum wobbling can occur, which affect the uniformity of introduced over the drum circumference embossed structures.
  • From the DE 100 21 456 C2 a method is known which avoids this disadvantage. The support of the arch structures to be impressed are the support elements, which are pressed from the inside against the drum shell and rotate with the drum during the rotational movement of the pressure rollers. According to the intended number of drivers three or four support elements and corresponding pressure rollers are arranged distributed symmetrically in the device.
  • From the DE 71 45 276 U1 is a device for embossing of knobs, warts or the like in the wall of a tube forth, which, however, is neither suitable nor intended for use on a drum shell of the type considered here.
  • The method described above has the common disadvantage that the devices operating according to these methods are structurally complicated and very expensive to produce. In order to be able to ensure a uniform over the drum shell embossed structure, very high demands are placed on the accuracy of drum guide and positioning. The size of the rollers is to be matched exactly to that of the drum, which disadvantageously means that for each drum size a correspondingly adapted roller must be used. The same applies to different embossing structures. For manufacturers with a large range of equipment, this means having to hold a correspondingly large number of different rollers. Another disadvantage is that the rollers wear out considerably due to sideways friction occurring on the side areas of the stamps. But even with low wear of the rollers, the embossed structure can no longer with the required accuracy and quality be generated.
  • The invention has for its object to provide a method for producing the embossing in a drum shell that can be realized with simpler means and in which the parts used in the tool are protected from heavy wear.
  • According to the invention this object is achieved by a method according to the features of claim 1 and with a device for implementing the method according to the features of claim 7. Further features and preferred embodiments are contained in the respective subsequent subclaims, the features of which can be used individually or in any combination with one another or with the features of the independent claim of the respective other category. Preferred embodiments of the method according to preferred embodiments of the device, and vice versa.
  • Of importance is that the cylindrically curved drum shell is held in a fixed position during the embossing process. The pressure-generating active components in the embossing device, which act on the drum casing from inside and outside, are linearly movable. The positionally secure holding the drum in the working position and the pressure applied to introduce the embossing pressure forces are radially outwardly to the middle of the drum and the center of the drum aligned radially outward and cancel each other out in the sum.
  • The device operating according to the method of the invention contains no rotating components which act on the drum. It eliminates a required in the prior art rotary drive and the complex leadership of the drum during the rotary motion. The device is much simpler in comparison to those of the prior art and works extremely reliable. Furthermore, it is advantageous that the reproducibility and the accuracy of the embossed structures introduced can be improved and the tools wear out less.
  • As positioning aids for the establishment of the drum shell serve, for example, the boreholes, which are provided for fastening the driver on the inner wall of the drum shell or other recesses, which have a typical function for the drum shell. This eliminates a hassle for additional positioning aids.
  • In a preferred embodiment of the method according to the invention, the embossments are introduced into several successive steps in the drum shell. By turning and / or moving in the axial direction of the drum-hollow cylinder is brought into the different working positions. For this purpose, the device has means with which the drum alone or the drum together with the holding elements can be moved and positioned accordingly.
  • The temporal overhead of the process in several steps is compensated by the advantages that result from the use of smaller dies. With punctures very narrow designed punches can be counteracted the disadvantage of wide die, in which the embossments in the side areas can not be introduced radially in an ideal manner and this leads to strong abrasion between the plate and the die of the punch and distortions, in particular lead to loss of quality for deep embossing or stronger sheet material.
  • In a preferred embodiment of the invention a plurality of narrow, the radius of the drum adapted punch circumferentially arranged immediately adjacent to each other for each embossing, which are radially movable to the drum center. With such an arrangement deep imprints of very high quality are feasible. Another advantage is that the wear of the tools is very low, the service life of the tools is extended.
  • In a further preferred embodiment of the invention, it is provided to produce different embossing structures with an embossing tool. For this purpose, several stamping dies are arranged next to and behind one another in a curved surface. The individual embossing stamps are each carrier of a single expression and are independent of each other controllable with respect to the printing depth and / or the compressive force. The Gegenmatrize is designed according to the stamping dies.
  • With this very convenient embodiment, different embossments can be produced with one tool set, without the embossing device having to be converted when changing the drum type. The use of identical tools for different embossing structures causes a considerable rationalization effect.
  • The method according to the invention as well as devices implementing this method are explained in more detail below with reference to exemplary embodiments illustrated in the drawing. Show it
  • Fig. 1
    a washing machine,
    Fig. 2
    an embossed structure,
    Fig. 3
    a procedure,
    Fig. 4
    an embossing device in a first variant,
    Fig. 5
    an embossing device, cutting plane through the drum center,
    Fig. 6
    an embossing device in a rzweiten variant, and
    Fig. 7
    an embossing stamp, segmented.
  • In Fig. 1, a washing machine 14 is shown with a horizontally arranged laundry drum, of which here the drum shell 1 is visible. The drum casing 1 has an embossed structure 3 in the regions between the drivers 10 (see also FIG. 2). The laundry drum is embossed by a process in which the cylindrically curved drum shell 1 is held in a fixed position during the embossing process. The embossing is introduced in one or more work steps according to the flowchart in FIG. 3.
  • A first embodiment of an embossing device 7 is shown in Fig. 4, which is designed for laundry drums with three drivers 10. Characteristic of this device 7 are mutually symmetrically offset by 120 ° arranged radially movable die 4, which act from the outside perpendicular to the drum shell 1. The surface of the embossing punch 4 facing the outer surface of the drum shell 1 carries the embossing structure 3. The embossed structure 3 is introduced in several working steps, the drum 1 being brought into the individual working positions by turning. As a result, directly adjacent embossed structural surfaces can be formed on the drum shell. For complete embossing of a drum shell 1, the device can also offset the drum shell in the depth, namely coaxially to the drum axis A. The different working positions may deviate from it be adjusted so that the holding device 2 is rotated together with the clamped drum shell 1 in the embossing device 7 or axially offset. An analog embossing device 7 for four drivers 10 is shown in Fig. 5 as a longitudinal section through the drum axis A.
  • The intended for receiving the drum shell cylinder 1 holder is formed segmented. The outer surfaces of the retaining segments 2, which point to the inside of the drum shell 1, are the carriers of the counter-die 5 and form the abutment to the externally acting embossing dies 4. The individual retaining segments 2 are radially outwardly movable and are corresponding in size and shape formed to the stamping dies 4.
  • The plugged with little play on the support core drum shell cylinder 1 is stretched and locked in the respective embossing position by spreading the retaining segments 2 radially outwardly against the inner drum wall 1 safely. The spreading of the retaining segments 2 can be effected in a simple manner via an eccentric shaft. The eccentric shaft and other structural details of the embossing device 7 are not shown in the drawing. To remove the embossed drum shell cylinder 1, the retaining segments 2 are moved radially inward.
  • The drum shell cylinder 1 is welded at the seam or permanently connected in some other way. With the device 7 drum shell cylinder 1 can be processed without and with inserted rear wall. Associated with this is the advantage of being able to flexibly classify the embossing process in the technological production chain of the laundry drum. The pressurization of the three punches 4 takes place simultaneously and under the same high pressure, so that the applied pressure forces cancel each other out in the sum. The requirements for the housing of the device 7 with respect to its mechanical strength can therefore be kept to a minimum.
  • In the case of the embossing device 7 in FIG. 6, a plurality of embossing dies 4 aligned with the drum axis A are arranged directly adjacent to one another per embossing area in a circular arc. The pressure surfaces are adapted to the drum radius. Since each individual stamp 4 is radially movable, the device 7 is particularly suitable for introducing deep embossed structures 3 and for embossing thicker sheets. The more embossing dies 4 are arranged circumferentially, ie the narrower the tangential width of the punch 4 is designed to order the better quality demands can be realized and the lower the wear of the tools.
  • In Fig. 7 a segmented embossing unit is shown. The embossing unit consists of a curved support 8 with a plurality of radially aligned guides 9 for receiving individual, linearly movable punch segments 6. The punch segments 6 are carriers each having a single embossing mold. The embossing pressure 11 is generated by radial movement of the punch segments 6, which are each controllable with respect to the pressing force and the embossing depth. The entire embossed structure results from the entirety of the individual embossings, which are introduced in one or more process steps.
  • By using the segmented embossing units, it is possible to emboss drum shells 1 of different structures 3 with a correspondingly adapted counter-die 5, with only one tool.

Claims (12)

  1. Method for introducing an embossed structure into a metallic drum casing (1), in particular into a drum casing (1) of a laundry drum, the embossing pressure generating the embossed structure (3) in the drum casing (1) between a pressure component (4) and the embossed structure (3) a support element (2) is applied, which is provided on the contact surface with a die having the counter-structure (5), characterized in that the cylindrically curved drum shell (1) is held in a fixed position during the embossing process.
  2. A method according to claim 1, characterized in that the drum shell (1) is processed one after the other as follows:
    - Positioning,
    - reliable locking
    - Shape.
  3. A method according to claim 1, characterized in that the embossments (3) are introduced in several steps in the drum shell (1), wherein the drum shell (1) is brought by rotation and / or by axial displacement successively in the intended embossing positions.
  4. A method according to claim 1, characterized in that the embossing on the drum shell (1) exerted pressure forces (11, 13) cancel each other out in the sum.
  5. A method according to claim 1, characterized in that different embossed structures (3) are generated controlled.
  6. A method according to claim 1, characterized in that the drum shell (1) is positioned over recesses which have a typical for the drum shell (1) function.
  7. Device for introducing an embossed structure into a metallic drum casing (1), in particular into a drum casing (1) of a laundry drum, the embossing pressure generating the embossed structure (3) in the drum casing (1) between a pressure component (4) and the embossed structure (3) a support element (2) is exercised, which is provided on the contact surface with a die having the counterstructure (5), and wherein the cylindrically curved drum shell (1) during the stamping process in a fixed position is durable, characterized in that the embossed structure (3) generating, active components (2, 4) in the embossing device (7) are linearly radially movable and set for secure locking of the drum shell (1) and the compression forces transmitted during embossing (11, 13) radially to the drum center or opposite are directed.
  8. Apparatus according to claim 8, characterized in that the active components (2, 4) in the embossing device (7) are arranged rotationally symmetrical to each other.
  9. Apparatus according to claim 8, characterized in that the contact surfaces of the active components (2, 4) are adapted to the radius of the drum shell (1).
  10. Apparatus according to claim 8, characterized in that the contact surface of each of the outside of the drum shell (1) acting component (4) occupied by the embossing structure to be introduced (3) and the contact surface of the counter-acting from the inside active component (2) with the counter-die ( 5) is provided.
  11. Apparatus according to claim 8, characterized in that a plurality of radially aligned dies (4) are arranged directly next to each other.
  12. Apparatus according to claim 8, characterized in that the embossing (11) generating components guided in guides (9) of a carrier (8) for a plurality of in a cylindrical surface next to and behind one another arranged punch segments (6) radially movable and with respect to the embossing depth and or the pressure force can be controlled.
EP07110034.1A 2006-06-29 2007-06-12 Method and device for embossing a drum cover Active EP1872881B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102006029951A DE102006029951A1 (en) 2006-06-29 2006-06-29 Method and device for embossing a drum shell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL07110034T PL1872881T3 (en) 2006-06-29 2007-06-12 Method and device for embossing a drum cover

Publications (3)

Publication Number Publication Date
EP1872881A2 true EP1872881A2 (en) 2008-01-02
EP1872881A3 EP1872881A3 (en) 2008-05-21
EP1872881B1 EP1872881B1 (en) 2017-10-25

Family

ID=38519707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07110034.1A Active EP1872881B1 (en) 2006-06-29 2007-06-12 Method and device for embossing a drum cover

Country Status (4)

Country Link
EP (1) EP1872881B1 (en)
DE (1) DE102006029951A1 (en)
ES (1) ES2647266T3 (en)
PL (1) PL1872881T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMC20090059A1 (en) * 2009-03-20 2010-09-21 Qs Group S P A Band of the drum washing machine, dryer and dryer and related production equipment.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101136863B1 (en) 2007-02-28 2012-04-20 삼성전자주식회사 Washing machine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7145276U (en) Neunkircher Eisenwerk Ag
US1939065A (en) 1931-01-22 1933-12-12 E W Blies Company Flanging and corrugating machine and method
DE1120411B (en) 1954-07-28 1961-12-28 Schmitz & Co Maschb Pressing or punching device for hollow workpieces
US4264017A (en) 1979-08-20 1981-04-28 American Can Company Container shape
JPS6012230A (en) 1983-06-30 1985-01-22 Chokichi Sato Method and device for slitting of strainer for well
DE8424004U1 (en) 1984-08-13 1985-01-31 Widmann, H. Werner, 8892 Kuehbach, De Mattress for improving tubular shells and hoods
US5634367A (en) 1994-04-18 1997-06-03 Kabushiki Kaisha Toshiba Press forming device
EP1214991A2 (en) 2000-12-18 2002-06-19 FRATTINI S.p.A.-COSTRUZIONI MECCANICHE Device for straining extruded or drawn bodies
DE19954027C2 (en) 1998-12-18 2003-01-23 Miele & Cie Device and method for producing dent-structured material webs
DE10021456C2 (en) 2000-05-03 2003-03-27 Miele & Cie Method for embossing arch structures in a hollow cylinder and device for carrying out the method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1629147B1 (en) * 2003-06-05 2007-07-18 LG Electronics Inc. Drum for washer and dryer
EP1872880B1 (en) * 2006-06-29 2009-09-16 BSH Bosch und Siemens Hausgeräte GmbH Method and device for embossing a drum cover
DE102006052429A1 (en) * 2006-06-29 2008-01-10 BSH Bosch und Siemens Hausgeräte GmbH Procedure for introducing an embossing structure into a metallic drum casing of a washing drum, comprises positioning the drum casing, operationally locking the drum casing, and embossing the drum casing

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7145276U (en) Neunkircher Eisenwerk Ag
US1939065A (en) 1931-01-22 1933-12-12 E W Blies Company Flanging and corrugating machine and method
DE1120411B (en) 1954-07-28 1961-12-28 Schmitz & Co Maschb Pressing or punching device for hollow workpieces
US4264017A (en) 1979-08-20 1981-04-28 American Can Company Container shape
JPS6012230A (en) 1983-06-30 1985-01-22 Chokichi Sato Method and device for slitting of strainer for well
DE8424004U1 (en) 1984-08-13 1985-01-31 Widmann, H. Werner, 8892 Kuehbach, De Mattress for improving tubular shells and hoods
US5634367A (en) 1994-04-18 1997-06-03 Kabushiki Kaisha Toshiba Press forming device
DE19954027C2 (en) 1998-12-18 2003-01-23 Miele & Cie Device and method for producing dent-structured material webs
DE10021456C2 (en) 2000-05-03 2003-03-27 Miele & Cie Method for embossing arch structures in a hollow cylinder and device for carrying out the method
EP1214991A2 (en) 2000-12-18 2002-06-19 FRATTINI S.p.A.-COSTRUZIONI MECCANICHE Device for straining extruded or drawn bodies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMC20090059A1 (en) * 2009-03-20 2010-09-21 Qs Group S P A Band of the drum washing machine, dryer and dryer and related production equipment.

Also Published As

Publication number Publication date
DE102006029951A1 (en) 2008-01-03
EP1872881B1 (en) 2017-10-25
PL1872881T3 (en) 2018-03-30
ES2647266T3 (en) 2017-12-20
EP1872881A3 (en) 2008-05-21

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