EP1523388A1 - Locking device - Google Patents

Locking device

Info

Publication number
EP1523388A1
EP1523388A1 EP20030762527 EP03762527A EP1523388A1 EP 1523388 A1 EP1523388 A1 EP 1523388A1 EP 20030762527 EP20030762527 EP 20030762527 EP 03762527 A EP03762527 A EP 03762527A EP 1523388 A1 EP1523388 A1 EP 1523388A1
Authority
EP
Grant status
Application
Patent type
Prior art keywords
clamping
force
clamping yoke
device
characterized
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
EP20030762527
Other languages
German (de)
French (fr)
Other versions
EP1523388B1 (en )
Inventor
Egbert Eurich
Klaus Katzfuss
Original Assignee
Egbert Eurich
Klaus Katzfuss
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

Links

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
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033Deforming tubular bodies
    • B21D26/039Means for controlling the clamping or opening of the moulds
    • 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
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • 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
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/021Deforming sheet bodies
    • B21D26/027Means for controlling fluid parameters, e.g. pressure or temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04Frames; Guides

Abstract

The invention relates to a locking device for a device used for producing metal pieces that are transformed in a closed form tool. Said locking device at least comprises: - several tensioning loops (2), each of which is provided with at least one traction frame (2.2) that has a closed contour and encompasses two facing, spaced-apart segments (2.3) between which a form tool (12) can be disposed, each of said segments (2.3) having at least one contact surface (2.1) or a contact surface (2.4) and the tensioning loops (2) being pivotably fixed to a joint (8); - a contact surface (3.1) which is located above the form tool (12) or on the surface thereof and is used as a support for a contact surface (2.1) of a tensioning loop (2); and - a device (5) which generates a locking force of more than 3 MN and is provided with several force-generating elements.

Description

locking device

The invention relates to a clamping device for an apparatus for the production of metal parts by a shaping in a closed mold and an apparatus for the production of metal parts by a shaping in a closed mold with such a clamping device according to the invention. The invention also relates to a component for a Zuhaltewerkzeug a device for producing metal pieces by forming at a closed mold.

For the purposes of the invention, the term includes "forming in a closed mold" forming methods, in which the forces are applied to the work piece for shaping the interior of a multi-part per se, but substantially closed at the time of application of force mold and applied to the mold locking forces regularly greater than 3 MN. such a forming process, for example, the so-called. hydroforming with longitudinally split dies.

For hydroforming devices are used which are regularly driven hydrauli- cally. The structure of these devices is determined to a large extent be produced by the workpieces, wherein the original molding is in particular a tubular hollow body. The force transfer to the pipe ends serving master cylinder are either standing or lying, placed against each other acting in particular in the direction of the exit tube axis. One of these ZY linder is usually drilled hollow and has a high-pressure connection, which is periodically connected through a pipe connection to the pressure intensifier.

BESTATIGUNGSKOPIE The mold is formed at least in two parts. In the simplest case of a two part mold one part of the tool is fixedly mounted on the machine table, while the other is driven and executes according to the working cycle, a Öffhungs- and closing movement. The devices may take either longitudinally or transversely split mold tools in dependence on the desired workpiece geometry, wherein, in clamping forces that are greater than 3 MN, usually longitudinally split dies are used. The efficiency of these devices is often at high volume, ie particular short cycle times given.

Devices for internal high-pressure forming which have a longitudinally divided to the tube axis mold are often designed as a multi-column presses or frame presses. The mold is arranged such that a part of the mold is moved by the press ram upwardly in the workpiece changing. During the Umfor- tion of the press ram has to balance resulting from projected workpiece surface and internal pressure strength for the molding tool and apply a least equal force to the mold. As a result of the method-specific high internal pressures (regularly about 1000 bar) understood that the necessary locking forces of more than 3 MN must be guaranteed by the steel structure of the device, which regularly with the use of multi-column press or frame presses requires relatively large overall height and large installation and operating space. The device requires an elaborate foundation and a high space requirement in accordance with the forces to be absorbed more than 3 MN and the resulting regularly resulting high dead weight. A tool change, ie in particular of the mold, is technologically up agile. From DE 1602475 B2 a pressing device for the production of hollow workpieces from sheet metal by cold working under a hydraulic internal pressure is known, in which the moving parts of the workpiece surrounding the split mold are held firmly together during the cold forming by means of swing-out locking hook. If such pressing device locking forces in excess of 1 MN, in particular of more than 3 MN, ensure the dimensioning of the closing mechanism, especially the locking hook or the joints, which are required for swiveling the locking hooks, perform accordingly. These devices with a mass of several tons require require costly foundation and the appropriate height. The locking hook, they should ensure the necessary clamping forces can ever, are difficult and e- manipulate nergetisch consuming.

The necessary for an economical operation of the device in the context of an industrial production short cycle times of 20 to 40 seconds can not be realized due to the then occurring high inertial forces. Formation of a gap during the actual forming process between the parts of the molding tool, in particular caused by the elastic deformation of the material of the locking hook, which lead to undesired deformation of the workpiece during the motor assembly is connected to this solution.

The object of the invention is to provide a device and a component of such a device, which has a lower overall height and a low weight and relative volume of investment, maintenance and operation requires less effort and can be operated economically and in which to see the gap formation be- the parts of the mold during the forming processes occur. The object of the invention is achieved by the locking device according to the invention comprises at least;

- a plurality of clamping yoke 2, wherein the clamping yoke 2 each having a a closed contour having towing frame 2.2, apart which two from each other and having oppositely disposed segments 2.3 between which a mold can be disposed 12, each of these segments 2.3 at least one bearing surface 2.1 and a bearing surface includes 2.4, and the clamping yoke 2 are each at least pivotally mounted on a pivot 8, wherein the material of the Zugrahmens 2.2 largely of materials having a tensile strength of 1500 N / mm 2 to 4200 N / mm 2, a fatigue strength of 1200 N / mm 2 consists to 3 ooon / mm 2 and a density of about 1.2 to 2.5 g / cm 3,

- a support surface 3.1, which is arranged above the forming die 12 or on the surface thereof and serves as a support for a support surface 2.1 of a tie shackle 2, and - a device 5 that generates a clamping force of more than 3 MN and has a plurality of force-generating elements, wherein the locking force between the contact surfaces 2.1 and 2.4 of the clamping yoke 2 and at least one surface that is located below the mold 12, engages.

The inventive selection of the material and its structural configuration, among other things enable a technically simple pivoting of the clamping yoke with a low expenditure of energy, so that this positive effect on the cycle times to be realized, and causes the occurrence of low dynamic forces.

The inventive use and selection of materials, having the features defined in the first claim material properties as a construction material allows compared to the usual in metal forming materials, in particular steel, new constructive solutions or machine concepts. For example, the tensile strength of a carbon fiber compounds is approximately 2950 N / mm 2 (mild steel about 320 to 690 N / mm 2), the fatigue strength of about 1950 N / mm 2 (reinforcing about 350 N / mm 2) and the density of ca. 1.8 g / cm 3).

The inventive construction of the element of the locking mechanism as Zugbü- gel, which realizes the required clamping force, brings the improved material properties of this invention preferred materials such as carbon fiber compound, such as the ratio of the fatigue strength to the mass of Zugrahmens of about 800 (steel about 8 to 12), aimed to carry.

In the dependent claims 2 to 8. Advantageous embodiments and further developments of the clamping device according to the invention are indicated.

The object of the invention is also achieved by an apparatus for the production of metal parts by hydroforming, at least generating a divided Formwerk- and includes a device according to the claims 1 to 8.

In addition, the object of the invention by a component for a Zuhaltewerkzeug a device for producing metal pieces by forming at a closed mold according to claim 10 is achieved.

In dependent claim 11 advantageous embodiments and developments of the component according to the invention are given.

An embodiment of the invention is illustrated in the drawing and described in more detail in the following description. Show it:

Fig. La, a clamping device in a side view

Fig. Lb, the locking device of Fig. La, in a further side view of Fig. 2a shows an alternative variant of the locking device with a closed

Mold in perspective

FIG. 2b shows a clamping device with an open mold in a perspective view Fig. 3a is a component for a Zuhaltewerkzeug in a side view and

FIG. 3b, the component for a Zuhaltewerkzeug from FIG. 3a in another side view.

In Fig. 1, a retaining device 1 according to the invention is as part of a Vorrich- processing for the production of metal pieces by internal pressure forming, shown with a two-part molding tool 12, in a side view. On a foundation 13, a machine frame 6 is fixed, which consists of a box-shaped construction made of mild steel substantially. A frame 6.3 is connected to a further frame 6.1 over a column 6.2 firmly. two joints 8 are arranged on the column 6.2 which are rigidly fixed in the direction of the longitudinal axis of the machine frame. 6 the two clamping yoke 2 are articulated at the joints 8, so that they are nearly parallel to the longitudinal axis of the machine frame 6 pivotably. The pivoting of the clamping yoke 2 is realized by two hydraulic tilting cylinders 9, which are arranged on the frame 6.3. in the four corners of the frame 6.3, to supportingly on this, verti- cal four lifting cylinder 4 is arranged, which are connected to the cross member. 3 The traverse 3 has flat bearing surfaces on which the 3.1 also plan and are-deductible to these parallel contact surfaces 2.1 of the clamping yoke 2 in the swiveled condition. On the cross member 3 of the upper part of the two-part longitudinally split mold 12 is fixed. The lower part of the molding tool 12 is fixedly connected to the machine table. 7 The machine table 7 is exposed on the piston surfaces of the four pressing cylinder constituting the force-generating elements of the device. 5 The pressing cylinders are fixed to the frame 6.1 of the type that these force-generating elements of the device 5, which act on the same clamping yoke 2, are preferably arranged more hydraulic high-pressure cylinder, of the type that the central force-transmission lines of this force-generating elements of the device 5 almost in parallel and extend in a plane that is not substantially different from the plane which divides the clamping yoke 2 in the axial direction in the center. The segments 2.3 are largely made of a light metal, such as aluminum alloys. The towing frame 2.2 consist largely of a carbon fiber compound, for example a intermoduligen fiber with about 50 to 65% fiber volume fraction in a resin matrix epoxy.

The operation of the device described is shown below in the context: After inserting the workpieces into the open molding tool 12, this is closed by the piston rods of the lifting cylinders are driven 4 downward, so that the two parts of the molding tool rest 12th Subsequently, the two clamping yoke 2 are pivoted by means of the pivot cylinder 9 in the vertical, so that there is an air gap between the contact surfaces 3.1 of the cross member 3 and the contact surfaces 2.1 of the clamping yoke 2, which is required to a touch ON pivot the clamping yoke 2 to realize. On the press cylinder retaining forces are now applied to the mold 12 through the machine table. 7 Here, the machine table 7 and the entire mold 12 is raised until the Aufla- geflächen to the cross member 3 and the clamping yoke 2 do. Subsequently, the two parts of the molding tool 12 are applied with the necessary clamping force, that is, the mold 12 clamped. Fig. 2 shows an alternative variant of the locking device with a closed or open die (Fig. 2a and Fig. 2b) in a perspective view. The machine frame 6 consists essentially of a box-shaped steel structure. A lower frame 6.3 is about four vertically arranged support fixedly connected to a further frame 6.1. In addition, a Zugbügelträger 10 between these two frames and the frame 6.3 by means of four spring guides 11 are connected is arranged. On Zugbügelträger 10, the two joints 8 are attached. the two clamping yoke 2 are hinged to the lower part thereof, so that they are parallel to the longitudinal axis of the machine frame 6 pivotally connected at the joints. 8 The pivoting of the clamping yoke 2 is realized by two hydraulic tilting cylinders 9, which are arranged on the frame 6.3. In the four corners of the frame 6.1 four lifting cylinders 4 are vertically arranged, which are connected to the cross member. 3 The traverse 3 has flat bearing surfaces on which the 3.1 and also planning to these parallel contact surfaces 2.1 of the clamping yoke 2 in the swiveled state (Fig. 2a) are deductible. The examples of the clamping yoke 2 each consist of two semicircular and oppositely disposed segments 2.3, wherein the almost semi-circular contours of the upper and lower segment are facing away from each other 2.3. The annular clamping yoke inflexible 2.2 wraps around the semi-circular contours of the upper and lower segment 2.3 and is connected to these. On the cross member 3 of the upper part of the two- molding tool 12 is fixed. The lower part of the molding tool 12 is fixed to the frame 6.1, on its underside also the four downwardly pressing cylinders 5 are fixed. The press cylinder 5 press through the four openings of the Zugbügelträgers 10 through the contact surfaces 2.4 of the bottom of the segments 2.3. The pressing cylinders are fixed to the frame 6.1 of the type that, when the clamping yoke 2 pivots reasonable (Fig. 2a), the average force-transmission lines of this force-generating elements of the device 5 are nearly parallel and in a plane that is not substantially different from the deviates plane which divides the clamping yoke 2 in the axial direction in the center. The operation of the device described is shown below in the context:

After insertion of the workpiece into the open molding tool 12, this is closed by the lift cylinder 4 are moved downwards, so that the two TEI le of the mold 12 resting. Subsequently, the two clamping yoke 2 are pivoted by means of the pivot cylinder 9 in the vertical, so that there is between the contact surfaces 3.1 of the cross member 3 and the contact surfaces 2.1 of the clamping yoke 2, an air gap, which is required in order to realize a non-contact pivoting of the clamping yoke. 2 On the press cylinder, the forces are now applied to the bearing surfaces of the clamping yoke 2.4 second Here, the clamping yoke 2 is moved downwardly until the supporting surfaces 3.1; 2.1 touching the traverse 3 and the clamping yoke. 2 Subsequently, the two parts of the molding tool 12 are applied with the necessary clamping force applied by the Preßzylindem, ie the molding tool 12 clamped by these clamping forces, so that during the deformation no lifting of the parts of the molding tool 12 is possible.

In Fig. 3 is a component for a Zuhaltewerkzeug 1 as part of a device for producing metal pieces by internal pressure forming, with a two-part molding tool 12, in a side view is shown. On a foundation 13, a machine frame 6 is fixed, which consists of a box-shaped construction made of mild steel substantially. A frame 6.3 is connected to a further frame 6.1 over a column 6.2 firmly. two joints 8 are arranged on the column 6.2 which are rigidly fixed in the direction of the longitudinal axis of the machine frame. 6 the two clamping yoke 2 and a pair of the assembly according to the invention are articulated at the joints 8, so that they are nearly parallel to the longitudinal axis of the machine frame 6 pivotably.

Alternatively, not shown in Figure 3, the clamping yoke 2 may be disposed toward axially displaceable to the tool 12th The pivoting of the clamping yoke 2 is realized by two hydraulic tilting cylinders 9, which are arranged on the frame 6.3. are located on this supporting manner in the four corners of the frame 6.3, vertical four lifting cylinder 4 is arranged, which are connected to the cross member. 3 The traverse 3 has flat bearing surfaces on which the 3.1 also plan and are-deductible to these parallel contact surfaces 2.1 of the clamping yoke 2 in the swiveled condition. On the cross member 3 of the upper part of the two-part longitudinally split mold 12 is fixed. The lower part of the molding tool 12 is fixedly connected to the machine table. 7 The machine table 7 is exposed on the piston surfaces of the four pressing cylinder constituting the force-generating elements of the forward direction. 5 The pressing cylinders are fixed to the frame 6.1 of the type that these force-generating elements of the device 5, which act on the same clamping yoke 2, are preferably arranged more hydraulic high-pressure cylinder, of the type such that the clamping force or the clamping forces acting on the clamping yoke 2 such or act that the resultant of the force introduction lines extend and in almost parallel to a plane that is not substantially different from the plane which divides the clamping yoke 2 in the axial direction in the center. The segments 2.3 are largely made of a light metal, such as aluminum alloys. The towing frame 2.2 mainly consist of a non-metallic composite material with embedded reinforcements, here largely from a carbon fiber compound, for example a domestic termoduligen fiber with about 50 to 65% fiber volume fraction in an epoxy resin matrix.

The operation of the device described is shown below in the context:

After insertion of the workpiece into the open molding tool 12, this is closed by the piston rods of the lifting cylinders 4 be moved downwardly so that the two parts of the molding tool rest 12th Subsequently, the two clamping yoke 2 are pivoted by means of the pivot cylinder 9 in the vertical, so that there is between the contact surfaces 3.1 of the cross member 3 and the contact surfaces 2.1 of the clamping yoke 2, an air gap, which is required in order to realize a non-contact pivoting of the clamping yoke. 2 On the press cylinder retaining forces are now applied to the mold 12 through the machine table. 7 Here, the machine table 7 and the entire mold 12 is raised until the contact surfaces of the cross member 3 and the clamping yoke 2 touch each other. Subsequently, the two parts of the molding tool 12 are applied with the necessary clamping force, that is, the mold 12 clamped.

The component according to the invention can be used also as an integral element of a Zuhaltewerkzeuges, which is used for forming or molding of plastic, metal, ceramic or glass parts. A shaping of the workpiece can be realized for example by blow molding or injection molding of large plastic parts. For example, a two-part blow mold could be gap-free, closed by means of the assembly according to the invention may contain one or more components according to the invention. The basic idea of ​​the invention can be transferred by one of ordinary skill after appropriate adjustment to the respective common parameters in a known manner. Another example of the principles of use of the invention is given in the casting of metal, ceramic or glass components in a known manner.

Claims

1. Locking device for a device for producing metal pieces by forming at a closed mold, characterized in that the clamping device comprises at least, a plurality of clamping yoke (2), wherein the clamping yoke (2) each have at least one a closed contour having towing frame (2.2) spaced which two from each other and oppositely disposed segments (2.3) between which a mold tool (12) can be arranged, each of these segments (2.3) has at least one supporting surface (2.1) or a bearing surface (2.4), and the
Clamping yoke (2) at at least one joint (8) are mounted pivotally in each case, wherein the material of Zugrahmens (2.2) is largely a reinforced composite material, and as far as possible made of materials having a tensile strength of 1500 N / mm 2 to 4200 N / mm 2, a fatigue strength of 1200 N / mm 2 to 3000 N / mm 2 and a density of about 1.2 to 2.5 g / cm 3 comprises a support surface (3.1), which above the mold (12) or arranged on the surface thereof and as a support for a bearing surface (2.1) of the tie shackle (2) is used, and - a device (5) which produces a clamping force of more than 3 MN and sev- eral has force-generating elements, the clamping force between the
Bearing surfaces (2.1) and (2.4) of the tension clamp (2) and at least one surface that is located below the mold (12), engages.
2. Locking device according to claim 1, characterized in that the device (5) between the bearing surfaces (2.4) of said clamping yoke (2) and directly to the forming tool (12).
3. Locking device according to claim 1, characterized in that the device (5) between the bearing surfaces (2.4) of said clamping yoke (2) and indirectly the mold (12).
4. Locking device according to claim 1, characterized in that the force-generating elements of the device (5), acting on the same clamping yoke (2), are arranged such that the central force-transmission lines of this force-generating elements of the device (5) substantially parallel and extend in a plane that is not substantially different from the plane which divides the clamping yoke (2) in the axial direction in the center.
5. Locking device according to claim 4, characterized in that the force-generating elements of the device (5) one or more hydraulic Hochdruckzy- are alleviated.
6. Zuhaltevomchtung according to claim 1, characterized in that at least one clamping yoke (2) to the tool (12) towards axially displaceable.
7. Locking device according to claim 1, characterized in that the towing frame (2.2) mainly consist of a non-metallic composite material with embedded reinforcements.
8. Locking device according to claim 7, characterized in that the towing frame (2.2) mainly made of a carbon fiber compound, for example an intermolecular duligen fiber with about 50 to 65% fiber volume fraction in an epoxy resin matrix.
9. An apparatus for producing metal parts by hydroforming, at least comprising a split mold and a clamping device according to the claims 1 to eighth
10. The member for Zuhaltewerkzeug a device for producing metal pieces by forming at a closed mold, characterized in that the component comprises at least - a clamping yoke (2), wherein the clamping yoke (2) at least one a closed
Contour has having towing frame (2.2), spaced which two from each other and oppositely disposed segments (2.3) between which a tool (12) can be arranged, each of these segments (2.3) at least one supporting surface (2.1) or a bearing surface (2.4) has, wherein the Mate rial of Zugrahmens (2.2) is largely a reinforced composite material, and the supporting surface (2.1) with a bearing surface (3.1) corresponds which o- arranged berhalb or below the tool (12) and / or on the surface thereof is, one or more locking force of locking forces together at least 1 MN can be applied to the component or are connected between the
Bearing surfaces (2.1) and (2.4) of the tie shackle (2) and at least one surface that is located below or above the tool (12), engages, wherein the clamping force or the clamping forces acting on the respective clamping yoke (2) such or act, that the resultant of the force introduction lines Near-run parallel to and in a plane that is not substantially different from the plane which centrally divides the clamping yoke (2) in the axial direction.
11. The component according to claim 10, characterized in that the clamping yoke (2) is at least on a hinge (8) pivotally fastened to the tool or (12) towards axially displaceable.
EP20030762527 2002-07-04 2003-06-27 Locking device Active EP1523388B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE10230071 2002-07-04
DE2002130071 DE10230071C1 (en) 2002-07-04 2002-07-04 Closure unit for molds or press tools includes tensile strap and closed contour frame made of fiber-reinforced composite
DE20308856U 2003-06-06
DE2003208856 DE20308856U1 (en) 2002-07-04 2003-06-06 The member for Zuhaltewerkzeug
PCT/EP2003/006801 WO2004004939A1 (en) 2002-07-04 2003-06-27 Locking device

Publications (2)

Publication Number Publication Date
EP1523388A1 true true EP1523388A1 (en) 2005-04-20
EP1523388B1 EP1523388B1 (en) 2011-02-09

Family

ID=30116603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030762527 Active EP1523388B1 (en) 2002-07-04 2003-06-27 Locking device

Country Status (8)

Country Link
US (1) US7415863B2 (en)
EP (1) EP1523388B1 (en)
JP (1) JP2005531416A (en)
KR (1) KR101002021B1 (en)
CN (1) CN100448563C (en)
CA (1) CA2490719C (en)
RU (1) RU2324563C2 (en)
WO (1) WO2004004939A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009020448A1 (en) * 2009-05-08 2010-11-11 Rehau Ag + Co. Highly rigid injection molded part as well as methods for producing a highly rigid injection-molded part
DE102016102275A1 (en) * 2016-02-10 2017-08-10 Uniflex-Hydraulik Gmbh radial press

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1938279A1 (en) * 1969-03-24 1970-10-15 Von Roll Ag Press
US3884142A (en) * 1973-01-19 1975-05-20 Carbox Ab Machine frame, having a biased wire girdle, and a method for biasing such a girdle
US3992837A (en) * 1974-07-29 1976-11-23 Allmanna Svenska Elektriska Aktiebolaget Press stand
US4155476A (en) * 1977-12-21 1979-05-22 Autoclave Engineers, Inc. Hanging reaction frame assembly
US4345893A (en) 1980-10-20 1982-08-24 Prince Corporation Molding machine
US4878374A (en) * 1988-05-20 1989-11-07 Nelson Richard E Five bar linkage mechanism
JPH0292625A (en) * 1988-09-30 1990-04-03 Kobe Steel Ltd Fiber-reinforced resin composite material
DE19602490C2 (en) * 1996-01-25 2002-07-18 Huber & Bauer Gmbh An apparatus for hydroforming
DE10081017T1 (en) * 1999-03-31 2001-06-13 Norsk Hydro As Fastening / locking device
JP3714116B2 (en) * 1999-08-09 2005-11-09 トヨタ自動車株式会社 Steering stability control system
EP1075882B1 (en) 1999-08-10 2003-09-24 Müller Weingarten AG Locking device for hydraulically operated presses
JP2002153918A (en) * 2000-11-20 2002-05-28 Nippon Steel Corp Mold clamping device
EP1513630A1 (en) * 2002-05-27 2005-03-16 Flow Holdings SAGL Pressure cell press comprising a tray, and a method for manufacturing said tray

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004004939A1 *

Also Published As

Publication number Publication date Type
CA2490719A1 (en) 2004-01-15 application
US20060090529A1 (en) 2006-05-04 application
JP2005531416A (en) 2005-10-20 application
WO2004004939A1 (en) 2004-01-15 application
US7415863B2 (en) 2008-08-26 grant
EP1523388B1 (en) 2011-02-09 grant
RU2324563C2 (en) 2008-05-20 grant
KR101002021B1 (en) 2010-12-22 grant
RU2005102708A (en) 2005-07-20 application
CN100448563C (en) 2009-01-07 grant
KR20050025308A (en) 2005-03-14 application
CA2490719C (en) 2009-12-22 grant
CN1665613A (en) 2005-09-07 application

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