WO1996005921A1 - Verfahren und vorrichtung zum setzen von stopfen an stopfenwalzwerken - Google Patents
Verfahren und vorrichtung zum setzen von stopfen an stopfenwalzwerken Download PDFInfo
- Publication number
- WO1996005921A1 WO1996005921A1 PCT/DE1995/000982 DE9500982W WO9605921A1 WO 1996005921 A1 WO1996005921 A1 WO 1996005921A1 DE 9500982 W DE9500982 W DE 9500982W WO 9605921 A1 WO9605921 A1 WO 9605921A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stopper
- plug
- rolling line
- rolling
- waiting position
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/06—Interchanging mandrels, fixing plugs on mandrel rods or cooling during interchanging mandrels
Definitions
- the invention relates to a method and an apparatus for setting stoppers
- DE-OS 2553580 Another principle is disclosed in DE-OS 2553580.
- the stopper arriving from the chute is moved to an inclined elevator by means of a swiveling device and then pushed up to the height of the rolling line.
- a carriage By means of a carriage, which can be moved longitudinally on a conveyor track arranged at an angle to the rolling line, the stopper is accelerated so strongly that it slips into the roll gap using its kinetic energy.
- the object of the invention is to provide a process-optimized method and a space-saving device which works without problems even with a wide range of different plug dimensions and allows an effective visual inspection of the rotating plugs.
- the space-saving design is achieved by choosing an approximately elliptical path for the movement of the lifting device, which path lies in a plane perpendicular to the rolling line.
- the long axis of the elliptical path is approximately parallel to the stopper's sliding line and only slightly offset from the rolling line towards the operating side.
- the top vertex of the track is above the edge of the guide trough.
- This track shape is achieved by a crank mechanism which has three wheels of the same size rotating in the same direction and two intermediate wheels, two wheels designed as toothed spur wheels being connected to the lifting device by means of cranks.
- the location of the stopper was laterally offset before lifting.
- a pivotable lever is arranged at the end of the slide, the trough-shaped lateral extension of which continues the slide. This lever is about one
- Pull-push rod which is articulated to the gear of the crank mechanism having a worm gear ring and a spur gear ring, is kinematically connected to the movement of the lifting device. If the stopper remained in the plane of the rolling line, the pivot point of the receiving lever would have to be laterally offset from the rolling line so that the
- Gripper of the lifting device can accommodate the plug from below, which would mean corresponding space requirements.
- a pivotable hollow box-like element the upper cover of which together with the lower plug change lever forms a prism-like support. If the element is swiveled, for example by means of a hinged hydraulic cylinder, a passage opening is opened, which makes it possible to discharge a damaged plug or its fragments via a fixed slide plate.
- the slide plate is located inside the discharge element and forms an extension to the swung-in lower plug change lever
- the formation of the waiting position at the height of the rolling line and at a close lateral distance from it is a very important advantage. In this way, the operator standing on this side of the rolling line can easily cool the previously recooled one
- a manipulator can be used in an advantageous manner, which can grip the two plugs in circulation when the dimensions change and replace them with two new ones. After the two new plugs have been put down, the two plugs that are no longer required are extended and taken to the workshop for measurement and possibly revision of the working part.
- the manipulator can also be used to lift a stopper that is classified as no longer usable in the visual inspection and to move it away.
- the stopper is deposited in the rolling line in a fixed prism guide, so that it is no longer possible to tilt the stopper.
- the axial alignment of the plug with respect to the rolling line is one of the essential prerequisites for trouble-free operation.
- the fixed prismatic guide forms a continuous continuation of the guideway in front and behind.
- FIG. 1 Front view of a device according to the invention Figure 2 Plug in the lifting device shortly before storage in the guide trough
- FIG. 5 shows a view in the direction Y in FIG. 4.
- Figure 6 is a partial view of a manipulator in connection with the device according to the invention.
- Figure 1 shows in the form of a schematic diagram a front view lying in the rolling direction of a device according to the invention. This line of sight is congruent with the line of sight of the helmsman of the stopper rolling mill sitting above the rolling line.
- the essential elements of the plug-changing device according to the invention are the upper plug-changing lever 1, which is designed as a gripper, the lower plug-changing lever 2, which is designed as a pivoting element, and the two plug-changing levers 1, 2 kinematically linked crank mechanism 3, including a push-pull rod 4.
- the crank mechanism 3 consists of three rotating in the same direction large wheels 5,6,7 with two smaller but also equally sized intermediate wheels 8,9 arranged in between, the first wheel 5 having a ring gear 36 and a spur gear ring gear 37, while the other two wheels 6,7 as
- Spur gears are formed. The coincidence of the direction of rotation of the three wheels 5,6,7 is indicated by arrows.
- crank mechanism 3 takes place via an articulated shaft 10, which is only indicated here, which with a controllable electric motor, not shown here, via a
- Safety clutch is connected.
- the first wheel 5 of the crank mechanism 3, which has two ring gears 36, 37, is driven via a worm shaft 11 with a corresponding reduction.
- One ring gear 36 is a worm wheel and the second ring gear 37 is a spur gear, both of which are arranged on a common axis.
- the already mentioned pull-push rod 4 is articulated via a crank 12.
- the other end of the push-pull rod 4 is articulated to the lower plug change lever 2.
- the pivotability of this plug change lever 2 is indicated by an arrow 13.
- the second gear 6, designed as a spur gear, of the crank mechanism 3 is articulated via a crank 14 to the upper plug change lever 1, indirectly via a sliding block 15.
- This sliding block 15 can move back and forth in a corresponding recess 16 in the upper plug change lever 1 ( see also Fig. 3).
- the third gear 7 of the crank mechanism 3, which is also designed as a spur gear, also has a crank 17 which is articulated to the upper part of the upper plug change lever 1. So that the upper plug change lever 1 can receive the plug softly, the gripping arm 18 is pivotally connected to the actual carrier element 38.
- the damping for the pivotability of the gripping arm 18 is carried out by a spring 19.
- Rolling line standing level and in contrast to the known conical drum has no inclination.
- the large axis 21 (shown here as a dashed line) lies parallel to the slide line (arrow) 22 of the stopper and is somewhat offset in the direction of the operating side.
- the upper vertex of this track results from the fact that the stopper has to be raised over the edge 23 of the prism-like guide track 24.
- the discharge element 25 has a roof-like cover 26. This forms a prism-like support for the stopper by means of a corresponding inclination together with the lower stopper change lever 2.
- a hydraulic cylinder 27 is articulated to the discharge element 25 as an actuating means, with the aid of which the discharge element 25 can be pivoted, as indicated by the arrow 28. Details of this can be found in the description for FIG. 3.
- FIG. 4 shows how a passage opening is formed by pivoting away the discharge element 25, so that the plug or its fragments, for example damaged, can be discharged along the stationary slide 30. Details of this can be found in the description of this FIG. 4.
- a plug rolling mill there are usually two plugs in circulation, the respective working part of the plug having a different diameter in order to reduce the wall thickness of the pipe to be rolled in conjunction with the corresponding rolling caliber.
- the stopper which is only connected to the mandrel bar by force, loosens and moves downward from the rolling line due to its weight with almost no lateral offset.
- a slide 30 is arranged in the plane of the rolling line below (shown only hinted here). The slide line along which the stopper moves down is indicated by an arrow 22. At the end of the slide 30, the stopper is caught (catch position 39) by the trough-like design of the right extension 31 of the lower stopper change lever 2. The impact on the stopper change lever 2 is dampened by the articulated pull-push rod 4.
- Damping element is arranged in the push-pull rod 4 a Fede ⁇ aket 32.
- the crank mechanism 3 By means of the crank mechanism 3, the lower plug change lever 2 is pivoted according to the arrow 13 and the plug is moved from right to left into the receiving position
- the damaged plug can be lifted out of the waiting position 34 by means of a manipulator (see FIG. 6) and transported away.
- the stopper In the aforementioned waiting position 34, the stopper remains on the free end 20 of the gripper arm 18 until the rolling line is free.
- the gripper arm 18 then moves the stopper along the path beyond the upper apex and deposits it in the rolling position 35. So that the free end 20 of Gripping arm 18 can submerge, corresponding slots 40 are provided in the guideway 24 (see FIG. 2).
- the stopper In this rolling position 35, the stopper is entrained in a known manner by threading it over the cone of the stopper from the pipe to be rolled and pushed over appropriately designed guideways into the rolling caliber and centered on the mandrel bar. After rolling has been carried out, the previously explained workflow begins anew.
- the work cycle is to be understood in such a way that after the plug used for the rolling that has just been rolled slides down on the chute 30 and the pipe that has just been rolled is retrieved, the movement sequence of the gripping arm 18 from the waiting position 34 is triggered. From this waiting position 34, the gripping arm 18 runs without interruption, i. H. Storage in the rolling position 35, passage to the receiving position 33 and lifting up to the waiting position 34 across the system, with corresponding slots 40, 41 being provided at all points where a passage of the free end 20 of the gripping arm 18 is required.
- the housing comprising the entire device has been omitted here for the sake of simplicity, since it is also not essential to the invention.
- FIG. 3 shows in the same view as FIG. 1 the phase of the transfer of the stopper into the rolling line (rolling position 35) and the receiving of the stopper by the gripping arm 18 in the receiving position 33.
- the movement sequence of the gripping arm 18 starts from the waiting position 34, in which the stopper is at the same height as in the rolling position 35.
- Plug out of the waiting position 34 up to the upper vertex is necessary since the plug has to be lifted over the edge 23 of the guideway 24.
- the plug is then deposited in the fixed prism-like guideway 24, which represents an extension of the guideway arranged before and after it. So that the free end 20 of
- Gripping arms can dive through the guide track 24, as already mentioned in the guide track 24 slots 40 are arranged (see Figure 2).
- the gripper of the gripping arm 18 consists of two upright web plates 42, 42 ' , the parallel spacing 43 of which is selected to match the length of the cylindrical guide section 44 of the stopper (FIG. 2).
- the upper stopper change lever 1 is moved further by means of the crank 17 and the spur gear 7 of the crank mechanism 3. After passing through the lower apex (not shown here), the gripper arm 18 reaches the receiving position 33. This is selected so that the gripper arm 18 from below
- Plug change lever 2 the push-push rod 4, the further movement, which is elastically elongated.
- the lower plug change lever 2 is moved back to the catch position from left to right.
- a locking plate (not shown here) is pivoted in at the end of the chute 30. The stopper sliding down too soon would collide with this sheet. After the locking plate has been pivoted away, the stopper can continue to slide under the effect of its own weight on the trough-like extension 31 of the lower stopper change lever 2.
- FIG. 4 in connection with FIG. 5, the special situation of removing a damaged stopper is shown.
- the operator has recognized the impermissible damage when the rolled plug slides down, he has the possibility to change the sequence of movements in such a way that the damaged plug can be removed.
- the lower plug change lever 2 is moved from the receiving position 39 into the receiving position 33 and at the same time the discharge element 25 is moved away from the position shown in dashed lines by means of the hydraulic actuating means 27.
- the discharge element 25 consists of two cheeks 47, 47 ′ arranged in parallel, which are connected at the lower end to a rotating rod 48.
- the upper end has a cover 26 which, together with the lower plug change lever 2, forms a prism-like support for the plug in the receiving position 33.
- Corresponding slots 41 are also arranged here so that the gripping arm 18 of the upper plug change lever 1 can dive through the cover 26 when the plug is received.
- the distance between the two cheeks 47, 47 ' and their height is chosen so that the largest stopper used in the stopper waiting line can be removed without difficulty.
- the manipulator 50 consists of a carriage, only indicated here, which can be moved on rails 51 perpendicular to the rolling line.
- Four gripper arms 52 to 55 are arranged on the manipulator and can be moved up and down in accordance with the position shown in broken lines.
- sensors 56 are arranged, between which the respective one
- Plug can be clamped.
- the same height of the waiting position 34 and the rolling position 35 (see FIG. 1), which is essential to the invention, allows the two stoppers 57, 58 to be exchanged to be gripped and lifted in a very simple manner when the dimensions change, using the manipulator.
- the plugs 59, 60 required for the next rolling dimension can be moved into the corresponding position and then placed on the end 20 of the gripping arm 18 on the one hand and on the guide track 24 on the other hand.
- the two stoppers 57, 58 that are no longer required are then moved away and fed to a control and reworking station.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Metal Rolling (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95925733A EP0777538B1 (de) | 1994-08-25 | 1995-07-21 | Verfahren und vorrichtung zum setzen von stopfen an stopfenwalzwerken |
RO97-00340A RO118386B1 (ro) | 1994-08-25 | 1995-07-21 | Procedeu si dispozitiv pentru asezarea busoanelor la laminoarele perforatoare de tevi |
DE59505217T DE59505217D1 (de) | 1994-08-25 | 1995-07-21 | Verfahren und vorrichtung zum setzen von stopfen an stopfenwalzwerken |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4431389.6 | 1994-08-25 | ||
DE4431389A DE4431389C1 (de) | 1994-08-25 | 1994-08-25 | Verfahren und Vorrichtung zum Setzen von Stopfen an Stopfenwalzwerken |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996005921A1 true WO1996005921A1 (de) | 1996-02-29 |
Family
ID=6527323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/000982 WO1996005921A1 (de) | 1994-08-25 | 1995-07-21 | Verfahren und vorrichtung zum setzen von stopfen an stopfenwalzwerken |
Country Status (6)
Country | Link |
---|---|
US (1) | US5829296A (de) |
EP (1) | EP0777538B1 (de) |
CN (1) | CN1062786C (de) |
DE (2) | DE4431389C1 (de) |
RO (1) | RO118386B1 (de) |
WO (1) | WO1996005921A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101204719B (zh) * | 2007-12-01 | 2010-06-02 | 太原重工股份有限公司 | 用于拔伸压机的芯棒循环装置 |
JP4834121B2 (ja) * | 2009-03-17 | 2011-12-14 | Jfeスチール株式会社 | 継目無鋼管用プラグ搬送設備 |
CN101773933B (zh) * | 2009-12-23 | 2012-07-18 | 太原通泽重工有限公司 | 顶杆芯棒定位装置 |
CN101716598B (zh) * | 2009-12-24 | 2011-12-28 | 太原通泽重工有限公司 | 一种顶杆循环的大口径钢管生产工艺 |
CN102310081A (zh) * | 2011-07-23 | 2012-01-11 | 烟台鲁宝钢管有限责任公司 | 一种顶杆装取装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1714131A (en) * | 1928-01-11 | 1929-05-21 | Austin G Mchugh | Mandrel changing and cooling machine |
US1764736A (en) * | 1927-03-21 | 1930-06-17 | Schloemann Ag | Mandrel moving and cooling apparatus |
DE1925451A1 (de) * | 1968-05-18 | 1969-12-11 | Innocenti Soc Gen Per L Ind Me | Selbsttaetige Dornwechselvorrichtung fuer Schraegwalzwerk |
DE2041180A1 (de) * | 1970-01-31 | 1972-02-24 | Kocks Gmbh Friedrich | Vorrichtung zum Entfernen der gewalzten Luppe aus einem Schraegwalzwerk |
FR2194492A1 (de) * | 1972-08-02 | 1974-03-01 | Algoma Steel Corp Ltd | |
DE2553580A1 (de) * | 1974-11-30 | 1976-06-16 | Nippon Kokan Kk | Verfahren und vorrichtung zum befoerdern des walzstopfens zu einem stopfenwalzwerk |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7148215U (de) * | 1972-07-20 | Mannesmannroehren Werke Ag | Dornwechselvorrichtung und Dorn an Walzwerken zum Abstrecken von Hohlkörpern | |
BE715196A (de) * | 1967-05-18 | 1968-09-30 | ||
DE2163818A1 (de) * | 1971-12-17 | 1973-06-20 | Mannesmann Roehren Werke Ag | Stopfen fuer rohrwalzwerk |
US4038854A (en) * | 1976-05-04 | 1977-08-02 | Aetna-Standard Engineering Company | Plug changer for plug mill |
DE2657059C3 (de) * | 1976-12-14 | 1980-10-23 | Mannesmann Ag, 4000 Duesseldorf | Dornwechselvorrichtung für ein Schrägwalzwerk |
DE3345665C2 (de) * | 1983-12-14 | 1986-11-27 | Mannesmann AG, 4000 Düsseldorf | Vorrichtung zum Halten der Walzstange und zum Führen des Walzgutes |
-
1994
- 1994-08-25 DE DE4431389A patent/DE4431389C1/de not_active Expired - Fee Related
-
1995
- 1995-07-21 CN CN95194778A patent/CN1062786C/zh not_active Expired - Lifetime
- 1995-07-21 EP EP95925733A patent/EP0777538B1/de not_active Expired - Lifetime
- 1995-07-21 RO RO97-00340A patent/RO118386B1/ro unknown
- 1995-07-21 WO PCT/DE1995/000982 patent/WO1996005921A1/de active IP Right Grant
- 1995-07-21 DE DE59505217T patent/DE59505217D1/de not_active Expired - Lifetime
-
1996
- 1996-01-19 US US08/793,436 patent/US5829296A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1764736A (en) * | 1927-03-21 | 1930-06-17 | Schloemann Ag | Mandrel moving and cooling apparatus |
US1714131A (en) * | 1928-01-11 | 1929-05-21 | Austin G Mchugh | Mandrel changing and cooling machine |
DE1925451A1 (de) * | 1968-05-18 | 1969-12-11 | Innocenti Soc Gen Per L Ind Me | Selbsttaetige Dornwechselvorrichtung fuer Schraegwalzwerk |
DE2041180A1 (de) * | 1970-01-31 | 1972-02-24 | Kocks Gmbh Friedrich | Vorrichtung zum Entfernen der gewalzten Luppe aus einem Schraegwalzwerk |
FR2194492A1 (de) * | 1972-08-02 | 1974-03-01 | Algoma Steel Corp Ltd | |
DE2553580A1 (de) * | 1974-11-30 | 1976-06-16 | Nippon Kokan Kk | Verfahren und vorrichtung zum befoerdern des walzstopfens zu einem stopfenwalzwerk |
Also Published As
Publication number | Publication date |
---|---|
CN1156422A (zh) | 1997-08-06 |
CN1062786C (zh) | 2001-03-07 |
EP0777538B1 (de) | 1999-03-03 |
RO118386B1 (ro) | 2003-05-30 |
EP0777538A1 (de) | 1997-06-11 |
US5829296A (en) | 1998-11-03 |
DE4431389C1 (de) | 1995-08-10 |
DE59505217D1 (de) | 1999-04-08 |
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