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Dokumentenidentifikation EP1074316 13.09.2007
EP-Veröffentlichungsnummer 0001074316
Titel VORRICHTUNG ZUM EINSTELLEN DES SPALTES ZWISCHEN DEN METALLPRESSWERKZEUGEN EINER BLECHPRESSVORRICHTUNG
Anmelder Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo, JP;
JFE Steel Corp., Tokio/Tokyo, JP
Erfinder MURATA, Satoshi, Chiyoda-ku Tokyo 100-8202, JP;
YAMASHINA, Shuichi, Chiyoda-ku Tokyo 100-8202, JP;
NARUSHIMA, Shigeki, Yokosuka-shi Kanagawa 239-0827, JP;
IDE, Kenichi, Yokohama-shi Kanagawa 234-0052, JP;
DODO, Yasushi, Kouza-gun Kanagawa 253-0112, JP;
MASUDA, Sadakazu, Chiyoda-ku Tokyo 100-8202, JP
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 69936718
Vertragsstaaten AT, DE, FR, GB, IT
Sprache des Dokument EN
EP-Anmeldetag 27.01.1999
EP-Aktenzeichen 999018872
WO-Anmeldetag 27.01.1999
PCT-Aktenzeichen PCT/JP99/00343
WO-Veröffentlichungsnummer 2000030777
WO-Veröffentlichungsdatum 02.06.2000
EP-Offenlegungsdatum 07.02.2001
EP date of grant 01.08.2007
Veröffentlichungstag im Patentblatt 13.09.2007
IPC-Hauptklasse B21B 13/18(2006.01)A, F, I, 20051017, B, H, EP
IPC-Nebenklasse B21D 31/06(2006.01)A, L, I, 20051017, B, H, EP   

Beschreibung[en]

The present invention relates to a plate thickness reduction system according to the preamble of independent claim 1.

Such a plate thickness reduction system can be taken from prior art document JP 61-222651 . Said system is provided with sliders that drive up and down the upper and lower dies via eccentric shafts or crank shafts. The die gap adjustment apparatus of the prior art is provided with an upper and lower bearing that supports rotation of said eccentric shafts or crank shafts in the slides, respectively.

As a means of one-pass, high-reduction pressing, press systems with conventional stentering press machines modified to a plate-thickness pressing system have been proposed (for example, Japanese patent publication No. 014139 , 1990 , unexamined Japanese patent publications No. 222651 , 1986 , No. 175011 , 1990 , etc.).

According to the unexamined Japanese patent publication No. 175011 , 1990 "Flying Sizing Press Apparatus" as shown in Fig. 1, for instance, rotating axes 4 are provided at the upper and lower or left and right sides of a line Z for transferring the material to be formed, and boss portions of connecting rods 3 with a required shape are engaged with eccentric portions of the rotating axes 4, and, in addition, dies 2 are connected to the tip portions of the connecting rods 3 in opposition to the line Z for transferring the material to be formed, in which the thickness of the material 1 to be formed (slab) is reduced by rotating the axes 4 and pressing the upper and lower surfaces of the material by means of the dies 2 via the connecting rods 3 coupled with the eccentric portions of the rotating axes. At that time, an up or down stroke of the dies 2 is determined by an eccentricity of the rotating axes 4, and as long as the center of rotation of the axes 4 is stationary, the thickness h of the slab 1 after being pressed is constant.

It is also proposed to use the press as shown typically in Fig. 2, for the same purpose. This apparatus is provided with dies 2 arranged at the upper and lower sides of the slab 1, sliders 8 that correspond to the respective dies and swing the dies up and down and backwards and forwards, and a driving system that drives the sliders, and the aforementioned sliders are composed of main slider units 8a with circular holes with center axes in the lateral direction of the slab, and cranks 9 provided with first axes 9a that engage with these circular holes and second axes 9b, whose diameters are smaller than those of the first axes and whose center axes are eccentric from the centers of the first axes, in which the second axes are driven and rotated by the above-mentioned driving system.

In this configuration, when the second axes 9b rotate, the first axes 9a carry out a crank motion with the centers of the second axes, and give the main slider units 8a up, down, backward, and forward motions through the circular holes in engagement. In this way, the sliders 8 press the dies and can give the dies a forward motion during a pressing period, therefore, the slab 1 is driven forwards (in the direction of flow of the slab) while being pressed, so the pressing operation is activated continuously. In addition, because the dies 2 press the slab 1 from both upper and lower sides of the slab, a large reduction can be achieved. In Fig. 2, 6 and 7 represent pinch rolls and transfer tables, respectively.

Fig. 3 shows an example using cranks and connecting rods; cranks 4 are connected to dies 2 equipped on the upper and lower parts of a slab 1 and the dies 2 press the slab when swinging up and down. In this case, too, the up/down stroke of the dies 2 is determined by the eccentricity of the cranks 4, and as far as the rotating center of the cranks 4 is fixed, the thickness h of the slab after being pressed is constant.

Furthermore, various means to sharply reduce thickness have been proposed for plate thickness reduction press apparatus that can greatly reduce work through one pass.

As described above, however, with a plate thickness reduction press apparatus that can greatly reduce work through one pass, cams or cranks are used to drive upper and lower dies upwards and downwards, therefore, the pressing stroke of the upper and lower dies remains constant at all times. Accordingly, one of the problems with such an apparatus was that the thickness of a plate after being pressed is constant as long as the same dies are used, so the thickness of the plate after a sharp reduction is difficult to adjust.

It is an objective of the present invention to provide a plate thickness reduction system as indicated above, wherein said plate thickness reduction system can be operated with high performance.

According to the subject matter of the present invention, said objective is solved by a plate thickness reduction system having the features of independent claim 1. Preferred embodiments are laid down in the dependent claims.

BRIEF DESCRIPTION OF THE INVENTION

Accordingly, it is provided a dies gap adjustment apparatus for a plate thickness reduction press system, with which using the same dies, the thickness of a plate after being highly pressed can be easily adjusted.

The dies gap adjustment apparatus for a plate thickness reduction press system is provided with a pair of dies (2) equipped opposite each other on upper and lower sides of a slab (1) and a swing device (10) that moves the upper and lower dies symmetrically up and down with respect to the slab, via eccentric shafts or crank shafts, in which are provided upper and lower bearings (21, 22) that support the aforementioned eccentric shafts or crank shafts during rotation and a bearing moving device (24) that drives up and down at least one of the above-mentioned bearings.

Using this configuration, it is possible to change the spacing between rotation centers of the upper and lower eccentric shafts or crank shafts by moving up and down at least one of the upper and lower bearings (21, 22) that support the eccentric shafts or crank shafts during rotation, using the bearing moving device (24). Consequently, even when pressing strokes of the upper and lower dies are constant and the same dies are used, the thickness of a plate after being pressed can be adjusted freely because each stroke range varies. In other words, the thickness of the plate after being highly pressed can be made smaller by narrowing the spacing between rotation centers of the upper and lower eccentric shafts or crank shafts, and it can also be made thicker after a sharp reduction conversely by widening the spacing between the rotation centers.

According to a preferred embodiment of the present invention, the aforementioned bearing moving device (24) is composed of bearing boxes (25) supporting the bearings and screw jacks (27) that are installed on a main frame (26) and drive up and down the above-mentioned bearing boxes. In this configuration, the gap of the dies can be adjusted by moving up and down the bearing boxes using screw jacks.

In addition, the aforementioned bearing moving device (24) can be configured with bearing boxes (25) that support the bearings and wedge plates (28) or step plates (29) that are sandwiched between and held by the main frame and the above-mentioned bearing boxes. This configuration provides a simple, light structure in which the bearing boxes are moved up and down and the gap between the dies can be adjusted as well as reducing the cost.

Hereinafter, the present invention is illustrated and explained by means of preferred embodiments in conjunction with the accompanying drawings. In the drawings wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

  • Fig. 1 is a configuration of a plate thickness reduction press system using connecting rods and eccentric shafts.
  • Fig. 2 shows a configuration of a plate thickness reduction press system using cranks and sliders.
  • Fig. 3 is a configuration of a plate thickness reduction press system using cranks and connecting rods.
  • Fig. 4 is a configuration of the plate thickness reduction press system provided with the dies gap adjustment apparatus according to the present teaching
  • Fig. 5 is a general configuration showing the dies gap adjustment apparatus according to the present teaching.
  • Fig. 6 A is an embodiment of the dies gap adjustment apparatus using wedge plates according to the present teaching invention, and Fig. 6 B shows an embodiment of the dies gap adjustment apparatus using step plates according to the present teaching.

The preferred embodiments of the present teaching are described as follows referring to the drawings. Portions in common with all drawings are identified with the same numbers, and no duplicate description is given.

Fig. 4 is a configuration of the plate thickness reduction press system equipped with the dies gap adjustment apparatus according to the present teaching. As shown in Fig. 4, the plate thickness reduction press system equipped with the dies gap adjustment apparatus according to the present teaching is provided with a pair of dies 2 arranged opposite each other on the upper and lower sides of the slab 1, and a swing device 10 that is provided for each of the upper and lower dies 2 and moves the die 2 backwards and forwards of the slab 1.

In Fig. 4, the swing device 10 is provided with a slider 12 equipped with a pair of circular holes 12a that are positioned obliquely to the feeding direction of the slab with a spacing L between each other, and eccentric shafts 14 that rotate inside the circular holes 12a.

The eccentric shaft 14 is composed of a first shaft 14a that rotates in the circular hole with the center axis A of the circular hole 12a, and a second shaft 14b that is driven and rotates with the center axis B displaced by an eccentricity e from the first axis 14a. The second shaft 14b is supported by bearings, not illustrated, for rotation, and driven and rotated by a rotation driving device also not illustrated.

The dies 2 are mounted on the sliders 12, which are detachable through die holders 11. On the downstream side of the dies 2, pinch rolls 16 are provided and control a transfer speed of the slab 1 on the inlet or outlet side of the pinch rolls 16, a table roller 7 is equipped and transports a material to be pressed. In Fig. 4, A and B represent the centers of the first and second shafts, respectively.

Fig. 5 is a view of general configuration of the dies gap adjustment device according to the present teaching.

As shown in Fig. 5, the dies gap adjustment apparatus 20 according to the present teaching is equipped with upper and lower bearings 21, 22 that support rotation of the above-mentioned second shaft 14b, and a bearing moving device 24 that moves up and down at least one of these bearings.

In Fig. 5, the bearing moving device 24 is comprised of upper and lower bearing boxes (shaft boxes) 25 for supporting bearings 21, 22, and screw jacks 27 that move up and down a bearing box 25 installed on the main frame 26 of the plate thickness reduction press machine. In Fig. 5, two upper screw jacks are provided, however, one screw jack or three or more screw jacks may also be incorporated. Although the lower shaft box 25 is supported by a load cell 30 in Fig. 5, a dummy member can also support the box.

Using this configuration, the shaft boxes 25 can be moved up and down and a gap between the dies can be adjusted by means of the screw jacks 27.

Figs. 6A and 6B show another embodiment of the dies gap adjustment apparatus according to the present teaching invention. Figs. 6A and 6B relate to a wedge-plate type and a step-plate type, respectively.

More explicitly, as shown in Fig. 6A, one wedge-shaped plate 28 or a plurality of them is inserted between and supported by the main frame 26 and the shaft box 25, and the wedge plate 28 is moved horizontally in this view, thus, the shaft box is moved up and down and a gap between the dies can be adjusted using a simple, light structure.

With another example shown in Fig. 6B, a step plate 29 whose thickness varies stepwise is inserted between and supported by the main frame 26 and the shaft box 25, and by moving the step plate 29 horizontally in this view, a gap between the dies can be adjusted while moving the shaft box up and down using the similar simple, light structure.

However, the construction of the dies gap adjustment apparatus according to the present teaching is not limited to that of the plate thickness reduction press system shown in Fig. 4, but the pair of circular holes 12a of the slider 12 can also be positioned vertically to the feeding direction of a slab, therefore, the pair of eccentric shafts 14 can also be vertically located in the feeding direction of the slab. In addition, any of the plate thickness reduction press systems shown in Figs. 1 through 3 can also apply. At this time, the upper and lower bearings 21, 22 support the rotation of eccentric shafts or crank shafts other than the second shafts 14b in Fig. 4.

According to the configuration of the present teaching as described above, the spacing between rotation centers of upper and lower eccentric shafts or crank shafts can be changed by moving up and down at least one of the upper and lower bearings 21, 22 that support rotation of the eccentric shafts or crank shafts, using the bearing moving device 24. Therefore, even when a pressing stroke of the upper and lower dies is constant and the same dies are used, the stroke range of each die varies, so that the thickness of a plate after being pressed can be adjusted freely. That is, by narrowing the space between rotation centers of the upper and lower eccentric shafts or crank shafts, the thickness of the plate after being highly pressed can be reduced, and conversely by widening the spacing between the rotation centers, the thickness of the sharply reduced plate can be made greater.

Consequently, the dies gap adjustment apparatus of the present teaching provides various advantages such as easy adjustment of the thickness of a plate after being highly pressed, using the same dies.


Anspruch[de]
Plattendicke- Reduzierungssystem, aufweisend ein Werkzeugpaar (2), zueinander auf den oberen und unteren Seite einer Platte (1) gegenüberliegend und eine Schwingvorrichtung (10), versehen mit Gleitstücken (12), die das obere und untere Werkzeug (2) symmetrisch von der Platte (1) über Exzenterwellen (14) oder Kurbelwellen nach oben oder nach unten antrieben, eine Werkzeugspalt- Einstellvorrichtung, aufweisend obere und untere Lager (21, 22), die die Drehung der Exzenterwellen (14) oder der Kurbelwellen in den Gleitstücken (12) lagern, und eine Lagerbewegungsvorrichtung (24), um zumindest eines der Lager aufwärts oder abwärts zu bewegen, dadurch gekennzeichnet, dass

die Gleitstücke (12) jeweils mit einem Lagerpaar (21, 22) ausgerüstet sind, die schräg oder vertikal zu einer Zuführrichtung der Platte (1) positioniert sind.
Plattendicke- Reduzierungssystem nach Anspruch 1, gekennzeichnet durch Wellenkästen (25) zum Lagern der Lager und Schraubenheber (27), die an einem Hauptrahmen (26) befestigt sind und die Wellenkästen auf oder ab antrieben. Plattendicke- Reduzierungssystem nach Anspruch 1, dadurch gekennzeichnet, dass die Lagerbewegungsvorrichtung (24) Lagerkästen (25) zum Lagern der Lager und eine Keilplatte (28) oder eine Stufenplatte aufweist, die dazwischen eingesetzt und durch einen Hauptrahmen (269 und die Wellenkästen gelagert sind.
Anspruch[en]
Plate thickness reduction system comprising a pair of dies (2) opposed to each other on the upper and lower sides of a slab (1) and a swing device (10) provided with sliders (12) that drives up and down the upper and lower dies (2) symmetrically from the slab (1), via eccentric shafts (14) or crank shafts,

a dies gap adjustment apparatus comprising upper and lower bearings (21, 22) that support rotation of the said eccentric shafts (14) or crank shafts in said sliders (12) and a bearing moving device (24) for moving up and down at least one of the said bearings, characterized in that

said sliders (12) are equipped with a pair of bearings (21,22) respectively that are positioned obliquely or vertically to a feeding direction of the slab (1).
Plate thickness reduction system according to claim 1, characterized by shaft boxes (25) for supporting bearings, and screw jacks (27) that are fixed to a main frame (26) and drive the said shaft boxes up and down. Plate thickness reduction system according to claim 1, characterized in that the said bearing moving device (24) comprises bearing boxes (25) for supporting bearings and a wedge plate (28) or a step plate (29) that are inserted between and supported by a main frame (26) and the said shaft boxes.
Anspruch[fr]
Système de réduction d'épaisseur de plaque comportant une paire de matrices (2) opposées l'une à l'autre sur les côtés supérieur et inférieur d'une brame (1), et un dispositif de pivotement (10) muni de coulisseaux (12) qui entraîne vers le haut et vers le bas les matrices supérieure et inférieure (2) symétriquement par rapport à la brame (1); via des arbres excentriques (14) ou des arbres coudés, un appareil d'ajustement d'intervalle de matrices comportant des paliers supérieur et inférieur (21, 22) qui supportent la rotation desdits arbres excentriques (14) ou arbres coudés dans lesdits coulisseaux (12), et un dispositif de déplacement de palier (24) pour déplacer vers le haut et vers le bas au moins un desdits paliers, caractérisé en ce que

lesdits coulisseaux (12) sont munis respectivement d'une paire de paliers (21, 22), qui sont positionnés obliquement ou verticalement par rapport à une direction d'alimentation de la brame (1).
Système de réduction d'épaisseur de plaque selon la revendication 1, caractérisé par des boîtiers d'arbre (25) pour supporter des paliers, et des vérins à vis (27) qui sont fixés sur un châssis principal (26) et qui entraînent lesdits boîtiers d'arbre vers le haut et vers le bas. Système de réduction d'épaisseur de plaque selon la revendication 1, caractérisé en ce que ledit dispositif de déplacement de palier (24) comporte des boîtiers de palier (25) pour supporter les paliers, et une plaque en coin (28) ou une en gradin (39) qui sont insérées entre un châssis principal (26) et lesdits boîtiers d'arbre, et supportées par ceux-ci.






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A Täglicher Lebensbedarf
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C Chemie; Hüttenwesen
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F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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