EP3334544B1 - Tiefziehwerkzeug und tiefziehverfahren zum tiefziehen von rohlingen - Google Patents

Tiefziehwerkzeug und tiefziehverfahren zum tiefziehen von rohlingen Download PDF

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Publication number
EP3334544B1
EP3334544B1 EP16758087.7A EP16758087A EP3334544B1 EP 3334544 B1 EP3334544 B1 EP 3334544B1 EP 16758087 A EP16758087 A EP 16758087A EP 3334544 B1 EP3334544 B1 EP 3334544B1
Authority
EP
European Patent Office
Prior art keywords
deep
movement
bell
transmission means
force transmission
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
Application number
EP16758087.7A
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German (de)
English (en)
French (fr)
Other versions
EP3334544A1 (de
Inventor
Marcus Naroska
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.)
Rainer Naroska Engineering GmbH
Original Assignee
Rainer Naroska Engineering 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
Application filed by Rainer Naroska Engineering GmbH filed Critical Rainer Naroska Engineering GmbH
Priority to PL16758087T priority Critical patent/PL3334544T3/pl
Publication of EP3334544A1 publication Critical patent/EP3334544A1/de
Application granted granted Critical
Publication of EP3334544B1 publication Critical patent/EP3334544B1/de
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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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/12—Devices controlling or operating blank holders independently, or in conjunction with dies mechanically
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/14—Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically

Definitions

  • the present invention relates to a deep-drawing tool for deep drawing of blanks which are punched out of lacquered or sheet material coated sheet material, to flangeless blanks, according to the preamble of claim 1, and to a corresponding method.
  • US 2009/126453 A1 discloses a thermoforming tool having the features of the preamble of claim 1.
  • thermoforming tools are used in particular for the production of container lids.
  • the blanks are punched out of metal sheets and deep-drawn in a deep-drawing tool, so that they receive an approximately cup-shaped form.
  • the thermoforming tool comprises a drawing bell and a drawing core, around which the drawing bell forms the cup-shaped molding in a downward movement.
  • the term "downward movement” as used here and below is not intended to limit the invention to certain spatial directions, but merely to designate a movement in the direction of a bottom dead center of the drawing bell during the deep-drawing movement. In fact, this designation also corresponds to a conventional arrangement in a thermoforming machine, in which the drawing bell is lowered from above onto the drawing core. This movement of the pulling bell is usually controlled by a corresponding crank gear which provides a sinusoidal movement of the pulling bell.
  • a so-called fold holder is provided which is pressed against the drawing bell from below such that the edge region of the blank lies between the drawing bell and the fold holder and is clamped therein.
  • This clamping in turn leads to the problem that form so-called paint hairs on the flangeless molding, ie hair-like structures that can contaminate the tool.
  • the shows EP 2 125 264 B1 a deep-drawing tool, in which the fold holder is pressed by the counter-force of a pneumatic spring in the direction of the drawing bell.
  • This acting on the fold holder spring in technical language also called "die cushion” is here formed by a gas volume in a chamber which is sealed by a piston, which rests on power transmission elements on the fold holder.
  • the piston first moves down together with the drawing bell. If a predetermined lower position of the piston is reached, the chamber is vented suddenly and thus set the counterforce of the pneumatic spring to zero. As a result, the clamping of the edge of the molding is canceled. This prevents paint or film material from detaching from the sheet material of the molding and forms the mentioned unwanted paint hairs.
  • thermoforming tool which represents an alternative way to suppress the formation of paint on the thermoforming tool, which is connected with little effort, lower cost, lower noise and can also be used for mechanical die cushion ,
  • thermoforming tool with the features of claim 1, as well as by a corresponding thermoforming method according to claim 14.
  • the deep-drawing tool comprises a drive which, when the drawing bell has reached a predetermined position in its downward movement, drives the force-transmitting means, which transmit the spring force of the die cushion to the fold holder, to move the drawing bell ahead.
  • the position at which this anticipatory movement sets in will be referred to in the following for linguistic simplification as a "predetermined position".
  • the anticipatory movement of the fold holder is removed from the drawing bell, and the clamping action of the fold holder is released. As a result, the edge of the molding is released, so that the Lackhaar Struktur is prevented.
  • the anticipatory movement preferably starts just before the end of the deep-drawing movement of the drawing bell, or shortly before the clamped flange (edge region) of the blank enters the drawing radius of the bell and is stretched.
  • the drive for generating the anticipatory movement must apply a force that overcomes the spring force of the die cushion.
  • the die cushioning force need not be zeroed to release the edge of the molded article, significant costs for compressed air production and noise reduction can be avoided and there is no longer a restriction to pneumatic die cushions.
  • the power transmission means comprises a piston or a pressure plate which is driven by the spring force in the direction of the drawing bell, while the piston or on the pressure plate, a pull rod is mounted, which is driven by the drive.
  • the piston is located in a chamber and sealingly closes off a volume of gas in the chamber forming a pneumatic spring.
  • This pneumatic spring in this case forms the die cushion.
  • the pressure plate is driven by a mechanical spring in the direction of the drawing bell.
  • the die cushion is formed by the mechanical spring.
  • the drive comprises a coupling rod which is parallel to the drawbar or in the axial extension and is brought into engagement with the drawbar at the latest when reaching the predetermined position of the drawing bell to transmit a pulling movement from the coupling rod to the drawbar.
  • the coupling rod Before reaching the predetermined position of the drawing bell, the coupling rod, for example, move freely relative to the pull rod, ie it finds no movement coupling takes place while reaching the predetermined position of the drawing bell, the coupling rod engages with the pull rod and pulls them down with.
  • the coupling between the coupling rod and tie rod can be done for example by a drive sleeve which is fixedly connected to the coupling rod and runs up to a stop which determines the engagement position, free on the pull rod. At the predetermined position, the sleeve strikes against a stop and pulls the pull rod down with it.
  • the coupling between piston rod and pull rod can also be done by other means.
  • the drive comprises a curved track and a cam roller, which bears against the cam track and is coupled in a motion-coupled manner to the power transmission means.
  • the cam roller can thus follow the course of the curved path.
  • the shape of the curved path is selected so that a downward movement of the cam roller is only transmitted to the power transmission means when the drawing bell has reached the predetermined position at which the anticipatory movement is to begin.
  • the curved path can be formed by various suitable mechanical elements, such as by a rotatable cam on whose circumference the curved path is formed, or by a translationally movable cam bar with the curved path on a side surface.
  • the drive comprises a rotating eccentric, which is connected via a connecting rod linkage with the power transmission means.
  • This eccentric may for example be a crankshaft to which the end of a connecting rod is attached.
  • the connecting rod itself still more rods, levers or the like may be present in the connecting rod linkage in order to achieve the desired movement coupling.
  • the drive comprises a camshaft, the cam of which is arranged to press down the power transmission means during rotation of the camshaft.
  • the drive comprises a cam bar, on the lateral curve profile of a cam roller which is pivotally mounted about an offset relative to the cam axis pivot axis, and means for converting a swinging movement of the cam roller about the pivot axis in a translational movement of the power transmission means.
  • a translational displacement of the cam bar and the pivot axis against each other in this case causes a pivoting of the cam roller, which in turn is converted into a linear movement of the power transmission means.
  • the drive of the power transmission means is coupled to the drive of the drawing bell.
  • the synchronization of the leading movement relative to the drawing bell can be realized most simply and inexpensively.
  • a motion coupling is energetically cheaper than a standalone drive.
  • the coupling can take place rotationally from the main press shaft via suitable chain, belt or gear drives or also translationally by a suitable coupling with the press ram, the upper tool or the drawing bell.
  • the drive comprises an electromagnetic drive for moving the power transmission means.
  • the drive in this case comprises a coil and a plunger anchor immersed in the coil, or a linear motor whose rotor is coupled to the power transmission means.
  • FIGS. 1a to 1c a deep drawing tool for deep drawing of blanks is shown, which are punched out of painted or sheet material coated with sheet material.
  • the deep-drawing tool is generally designated by the reference numeral 10 and comprises a cutting bell 12 shown in section and a pulling core 14, over which the drawing bell 12 is pulled down in the direction S during the deep-drawing operation.
  • This direction S here denotes a downward movement to a bottom dead center of the drawing bell, which can be moved by a crankshaft, not shown in detail and can perform typically, but not restrictive, a sinusoidal up and down movement, while the pulling core 14 remains stationary.
  • a fold holder 18 is disposed around the pulling core 14 and movable up and down.
  • the pleat holder 18 rests on pleat-holder pins 20, which in turn are coupled at their lower ends to a piston 22 which is moveable upwardly and downwardly in a chamber 24.
  • a gas volume 26 which is sealed at its top by the piston 22 sealing.
  • the gas volume 26 thus forms a pneumatic spring, which is an upward spring force F (see arrow up in Fig.
  • thermoforming tool 10 The above-described elements of the thermoforming tool 10 and their function are essentially made of EP 2 125 264 B1 known.
  • the representation in the Fig. 1a to 1c the state of the art.
  • a mounted on the underside of the piston 22 piston rod 30 which in Fig. 1d is shown schematically and their function will be described below. It moves together with the piston 22 in the vertical direction.
  • the terms "piston rod” and “piston” are referred to herein and in the following according to their use in connection with the pneumatic spring or the pneumatic die cushion.
  • the power transmission means for transmitting the spring force of the die cushion to the pleat holder 18 instead of a plunger 22 comprises a pressure plate which is supported from below by the mechanical springs.
  • the piston rod 30 is merely one embodiment of a pull rod attached to the piston 22 or the pressure plate.
  • Fig. 1a shows the drawing bell 12 in a position just before placement on a disc-shaped blank 32, which rests on the pulling core 14.
  • the drawing bell 12 makes a downward movement in the direction S, through which its edge 16 pulls the corresponding underlying areas of the blank 32 down over the pulling core 14, as in the sequence of movements in the Figures 1b and 1c is shown.
  • the path of the drawing bell 12 is denoted there by S 2 and S 3 respectively.
  • the piston 22 moves during this movement the same way S 2 and S 3 back and is pressed down against the spring force F of the die cushion.
  • the edge area of the blank which is successively deep-drawn into a blank, is clamped during this movement between the lower edge 16 of the drawing bell 12 and the fold holder 18.
  • Fig. 1d Is a predetermined position of the drawing bell 12 reached during its downward movement, in Fig. 1d is shown, the piston rod 30 is driven to move downward, which leads the movement of the pulling bell 12.
  • the piston rod 30 thus moves faster than the drawing bell 12 down, whereby a gap Z is formed and the clamping between the fold holder 18 and the edge 16 of the drawing bell 12 is released.
  • the distance between the fold holder 18 and the edge 16 of the drawing bell 12 is now greater than the material thickness of the blank 32 and its edge region is thus released.
  • the path traveled by the piston rod 30 and the piston 22 together may, as in Fig. 1d shown, S 3 + Z be, so be greater than the path designated by S 3 of the drawing bell to the predetermined position at which the release of the edge of the blank 32 is to take place.
  • the drawing bell 12 on the in Fig. 1d designated position also covers a way down, which is longer than S 3 , for example, to strip the blank completely flangeless.
  • the piston rod 30 with the piston 22 is moved further synchronously or in advance down so that the size of the gap Z is maintained or increased at least until the clamped flange (edge) of the blank enters the drawing radius of the drawing bell , that is, the surface 16 has passed the drawing bell.
  • the piston rod with the piston can also be moved lagging or decoupled from the piston drive, which would lead to a gap reduction or decoupling due to the Ziehkissenfederkraft to a concern of the pleat holder on the surface of the edge 16 of the drawing bell.
  • Fig. 1e shows an alternative embodiment with a mechanical spring-cushion, in which a pressure plate 23 attached pull rod 33 through the fixed bottom plate 34 on which at least one mechanical compression spring 25 is arranged and presses against the pressure plate 23.
  • the pressure plate 23 replaces the piston 22 in this case, and the pull rod 33 replaces the piston rod 30 Fig. 1a to 1d ,
  • the embodiments of the present invention described below relate primarily to formations of a drive for the power transmission means to the movement of the drawing bell 12 vorseilenden movement, ie in the present case the piston drive for movement of the piston rod 30 and attached thereto the piston 22, which in the preceding Fig. 1a until le is not shown.
  • the details shown there of the drawing bell 12, the pulling core 14, the folding holder 18, etc. are omitted in the following figures for the sake of simplicity. Identical parts are designated by the same reference numerals.
  • the pulling bell 12, the pulling core 14 and the fold holder 18 and the fold holding pins 20 are formed in the following embodiments as in FIGS Fig. 1a to 1d represented, ie with respect to a pneumatic die cushion.
  • the illustrated drives equally to drive a pressure plate 23 via the tie rod 33 in accordance Fig. 1e are suitable.
  • Fig. 2 In the upper area of Fig. 2 the chamber 24 with the gas volume 26 and the inside of the chamber movable piston 22 are shown.
  • the piston rod 30 passes through the bottom 34 of the chamber 24 perpendicular to the underside of the piston 22 and is fixed thereto, so that a downwardly acting on the piston rod 30 pulling force moves the piston 22 down.
  • a cam roller 36 is mounted, which is rotatable about an axis perpendicular to the piston rod 30.
  • the cam roller 36 abuts on the surface of a cam track 38 which is formed by the outside of a cam disc 40, which in turn is rotatable about an axis 42 parallel to the axis of rotation of the cam roller 36.
  • a spring 43 By a spring 43, the piston rod 30 is pressed with the cam roller 36 down against the cam track 38.
  • the cam track 38 is formed so that it in a peripheral portion of the cam plate 40 (in particular in the upper left quadrant in Fig.
  • the cam track 38 must be designed so that the movements of the cam roller 36 and the drawing bell 12 are synchronized before reaching the predetermined position of the drawing bell 12, at which the edge region of the blank 32 is to be released.
  • a high manufacturing accuracy of the cam plate 40 is required.
  • Fig. 3 an embodiment in which the upward and downward movement of the cam roller 36 is only transmitted to the piston rod 30 when the predetermined position of the drawing bell 12 is reached.
  • Coupling rod 44 and piston rod 30 can be coupled to each other by suitable coupling means 46, such as a driver sleeve free on piston rod 30 fixedly connected to the upper end of coupling rod 44, such that coupling rod 44 does not reach until it reaches a downward movement a predetermined waypoint reaches the piston rod 30 (ie about by running the drive sleeve on a lower stop on the piston rod 30) and this carries on their way to transmit a downward pulling movement of the coupling rod 44 to the piston rod 30. Above this stop point, in which the coupling takes place between the coupling rod 44 and the piston rod 30, the coupling rod 44 runs freely and independently of a movement of the piston rod 30.
  • suitable coupling means 46 such as a driver sleeve free on piston rod 30 fixedly connected to the upper end of coupling rod 44, such that coupling rod 44 does not reach until it reaches a downward movement a predetermined waypoint reaches the piston rod 30 (ie about by running the drive sleeve on a lower stop on
  • This coupling mechanism 46 is used to bring about on reaching the predetermined position of the pulling bell 12, a carrying the piston rod 30 down, which corresponds to the desired anticipatory movement of the piston rod 30 relative to the drawing bell 12.
  • a movement is in the Fig. 4a to 4g shown.
  • Fig. 4a denotes a top dead center of the drawing bell 12.
  • Fig. 4b the drawing bell 12 moves down on the pulling core 14 until in Fig. 4c a contact of the drawing bell 12 is made with the blank 32 and the punching and deep drawing process begins.
  • the drawing bell 12 moves sinusoidally downward, together with the piston 22 and the piston rod 30, which is still decoupled from the coupling rod 44. Meanwhile, the cam plate 40 makes a continuous counterclockwise rotation.
  • the piston drive comprises a rotating eccentric 48, which may be a crankshaft rotating about a rotation axis 50.
  • a lower end of a connecting rod 52 is attached, whose upper end is connected to a two-armed pendulum rocker 54.
  • This pendulum rocker 54 oscillates about a pendulum axis 56, from which the two pendulum arms 58,60 extend in different directions.
  • the first pendulum arm 58 is connected to the upper end of the connecting rod 52, while the in Fig. 5 opposite second pendulum arm 60 is connected to the lower end of a push rod 62, whose upper end is hinged to the lower end of the coupling rod 44.
  • the connecting rod 52 driven by the eccentric 48 is articulated directly to the coupling rod 44 with its upper end.
  • the eccentric 48 is driven in this case by a Elektroanrieb, such as a servo motor whose speed is controlled so that only at the defined position of the drawing bell 12 of the desired additional stroke in the anticipatory movement of the piston rod 30 by a correspondingly accelerated pulling movement of the coupling rod 44th is generated downwards, which is brought into engagement with the lower end of the piston rod 30 at this moment.
  • Fig. 7 shows a further embodiment in which the piston drive comprises a camshaft 64, the cam 66 is arranged to detect in a certain rotational position of the camshaft 64, the piston rod 30 and provided on the piston rod 30 projection or the like, so that they piston rod 30th during the further rotational movement of the camshaft 64 is pressed down.
  • the camshaft 64 may have a constant speed and be coupled to the drive of the upper tool or have a self-controlled electric drive.
  • the piston drive comprises an electromagnetic drive 68 for moving the piston rod 30.
  • This electromagnetic drive 68 comprises a coil 70 and a plunger rod 72 immersed in the coil 70, which is attached to the piston rod 30.
  • the coil 70 is connected to a power source 74 through a corresponding circuit 76 so that the coil 70 can be temporarily powered. If the power is turned on, the plunger armature 72 is drawn into the coil 70 and thus pulls the piston rod 30 down.
  • the electric drive 68 of the embodiment in FIG Fig. 9 includes a linear motor 78 having a rotor 80 coupled to the piston rod 30. If the runner 80 is moved down, he leads the piston rod 30 in this direction.
  • FIG. 10 The illustrated embodiment is similar to FIG Fig. 2 at the lower end of the piston rod 30, a cam roller 36 is mounted, which runs in this case on top of a translationally movable cam rod 82.
  • the top of the cam bar 82 forms a cam track, and the cam bar 82 is horizontal, ie perpendicular to the vertical direction of movement of the piston rod 30.
  • the cam roller 36 is moved up and down, and this movement is applied to the piston rod 30 transmitted.
  • the embodiment in Fig. 11 comprises a pendulum rocker arm 90, which oscillates about a pendulum axis 92 and has two arms 86, 88 which extend from the pendulum axis 92 in different spatial directions.
  • a cam roller 84 is mounted, which runs on the top of a cam bar 82, which is similar to the in the previous embodiment Fig. 10 is arranged, namely horizontally, and is translationally reciprocable. During this reciprocation of the cam bar 82, the cam follower 84 running thereon is moved up and down.
  • the rocker arm 90 is pivoted about its pendulum axis 92, so that a pressure roller 94, which is attached to the end of the other arm 88, also performs a pivoting movement and thus is also moved substantially also up and down.
  • the pressure roller 94 detects the piston rod 30, for example at a stop provided for this purpose, and presses the piston rod 30 downwards. This downward pulling movement of the piston rod 30 downwardly can be controlled by the shape of the cam track of the cam roller 82.
  • Fig. 12 shows a further embodiment in which the cam bar 82 is stationary and instead the pendulum axis 92 of the pendulum rocker 90 is translationally reciprocated (arrow F).
  • the cam roller 84 runs on the rising portion of the cam bar 82, resulting in the pivoting movement of the pendulum rocker 90 leads and presses the pressure roller 94 together with the piston rod 30 downward.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP16758087.7A 2015-08-12 2016-08-05 Tiefziehwerkzeug und tiefziehverfahren zum tiefziehen von rohlingen Active EP3334544B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16758087T PL3334544T3 (pl) 2015-08-12 2016-08-05 Narzędzie do głębokiego tłoczenia i sposób głębokiego tłoczenia półwyrobów

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015113267.2A DE102015113267A1 (de) 2015-08-12 2015-08-12 Tiefziehwerkzeug zum Tiefziehen von Rohlingen
PCT/EP2016/001349 WO2017025181A1 (de) 2015-08-12 2016-08-05 Tiefziehwerkzeug und tiefziehverfahren zum tiefziehen von rohlingen

Publications (2)

Publication Number Publication Date
EP3334544A1 EP3334544A1 (de) 2018-06-20
EP3334544B1 true EP3334544B1 (de) 2019-07-31

Family

ID=56851533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16758087.7A Active EP3334544B1 (de) 2015-08-12 2016-08-05 Tiefziehwerkzeug und tiefziehverfahren zum tiefziehen von rohlingen

Country Status (9)

Country Link
US (1) US11318518B2 (lt)
EP (1) EP3334544B1 (lt)
CN (1) CN108136471B (lt)
DE (1) DE102015113267A1 (lt)
DK (1) DK3334544T3 (lt)
ES (1) ES2753176T3 (lt)
LT (1) LT3334544T (lt)
PL (1) PL3334544T3 (lt)
WO (1) WO2017025181A1 (lt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118559A1 (de) 2017-08-15 2019-02-21 Neoform Flensburg Gmbh & Co. Kg Tiefziehwerkzeug zum Tiefziehen von Rohlingen
CN110405077B (zh) * 2019-08-02 2021-04-16 江苏春秋重型机械有限公司 一种金属板材弯曲变形加工自动化机械
DE102021126646A1 (de) 2021-10-14 2023-04-20 MAIKO Engineering Gesellschaft mit beschränkter Haftung Werkzeug zum Umformen von beschichteten Blech-Rohlingen

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US924672A (en) * 1907-08-21 1909-06-15 Bliss E W Co Drawing-press.
US3267715A (en) * 1961-10-16 1966-08-23 Dro Engineering Company Di Hydraulic control for dies in ram type presses
US3373596A (en) * 1965-06-18 1968-03-19 Gerd M. Moeller Hydraulic press
GB1481202A (en) * 1976-03-29 1977-07-27 Metal Box Co Ltd Deep drawing
US4248545A (en) * 1978-09-12 1981-02-03 Mts Systems Corporation Deep drawing press with blanking and draw pad pressure control
JP2513379B2 (ja) * 1991-10-02 1996-07-03 東洋製罐株式会社 有機被覆金属材の絞り成形法
DE4419676A1 (de) * 1994-06-07 1995-12-14 Horst Baltschun Hydraulisch gekoppelter Blechhalter
CN1181332C (zh) * 2003-03-07 2004-12-22 江苏大学 变压边力和变冲压速度的薄板成形方法及其装置
JP4787642B2 (ja) * 2006-03-22 2011-10-05 コマツ産機株式会社 プレス機械のダイクッション制御装置
US7765848B2 (en) * 2006-04-14 2010-08-03 Honda Motor Co., Ltd. Press working method and press working apparatus
DE102007005011B4 (de) * 2007-02-01 2012-09-06 Saeta Gmbh & Co. Kg Verfahren und Ziehwerkzeug zum Tiefziehen von Rohlingen aus Blechmaterial zu flanschlosen Formlingen
JP5466834B2 (ja) * 2008-05-22 2014-04-09 株式会社小松製作所 ダイクッション装置
DE102010060103B4 (de) * 2010-10-21 2013-04-11 Schuler Pressen Gmbh & Co. Kg Ziehpresse mit dynamisch optimierter Blechhaltung

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Also Published As

Publication number Publication date
DK3334544T3 (da) 2019-10-14
WO2017025181A1 (de) 2017-02-16
ES2753176T3 (es) 2020-04-07
EP3334544A1 (de) 2018-06-20
LT3334544T (lt) 2019-09-10
CN108136471A (zh) 2018-06-08
US11318518B2 (en) 2022-05-03
DE102015113267A1 (de) 2017-02-16
US20200197996A1 (en) 2020-06-25
CN108136471B (zh) 2019-12-27
PL3334544T3 (pl) 2019-12-31

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