EP0331340B1 - A cooling bed for steel bar - Google Patents

A cooling bed for steel bar Download PDF

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Publication number
EP0331340B1
EP0331340B1 EP19890301722 EP89301722A EP0331340B1 EP 0331340 B1 EP0331340 B1 EP 0331340B1 EP 19890301722 EP19890301722 EP 19890301722 EP 89301722 A EP89301722 A EP 89301722A EP 0331340 B1 EP0331340 B1 EP 0331340B1
Authority
EP
European Patent Office
Prior art keywords
run
cooling bed
trough
bar
lever
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.)
Expired - Lifetime
Application number
EP19890301722
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0331340A1 (en
Inventor
Junichi Zensai
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.)
Kyoei Steel Ltd
Original Assignee
Kyoei Steel Ltd
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 Kyoei Steel Ltd filed Critical Kyoei Steel Ltd
Publication of EP0331340A1 publication Critical patent/EP0331340A1/en
Application granted granted Critical
Publication of EP0331340B1 publication Critical patent/EP0331340B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B21B43/003—Transfer to bed

Definitions

  • This invention relates to a cooling bed and apparatus for transferring hot rolled steel bar to a thereto.
  • Jumping out and bending of finished products in high speed rolling can be eliminated by changing the structure and operation of the run-in table so that it forms part of a transfer apparatus for the steel bar.
  • DE-C-923963 discloses a cooling bed and a transfer arrangement for metal bar according to the pre-characterizing part of claim 1 in which grooved receiving elements for the bar are carried by sliding rotating elements which cause the receiving elements to tip the bar out on to a chute leading to a cooling bed.
  • a cooling bed and apparatus for transferring hot rolled steel bar thereto comprising a run-in table and means for stopping steel bar fed to the run-in table at a predetermined position on the run-in table, the run-in table being formed in a plurality of sections spaced lengthwise of the bar, each section comprising an open trough movable into an upper position abutting a closure plate to receive bar fed to the run-in table and into a lower position to discharge the bar, and a sloping chute for conveying the bar from the trough to the cooling bed, characterized in that the chute is formed in sections aligned lengthwise of the run-in table and disposed at a level above the troughs when the troughs are in their lower position, so as to remove the bar from the open troughs during the downward movement of the troughs.
  • reference A denotes the whole of a cooling bed arrangement incorporating the present invention.
  • the cooling bed A has a run-in table 1 at one side thereof and a run-out table 2 at the other side thereof, both being in parallel with each other.
  • a Rechen type cooling bed proper 3 is arranged between both tables 1, 2.
  • Steel bars G supplied from the run-in table 1 are placed one by one on the cooling bed proper 3 as they are put in a direction crossing the direction in which they are conveyed on the run-in table. While steel bars are conveyed on the cooling bed proper 3, they are cooled down to the desired degree and after cooling, they are taken out of the run-out terminal table 2 at a terminal end of the cooling bed proper 3.
  • a sensor 5 (photoelectric or other type) arranged at the required position relative to the run-in table 1.
  • the sensor 5 is connected electrically to an automatic control circuit 6 to which is connected a braking device 7 set at the required position of the run-in table 1.
  • the control circuit 6 measures the timing according to the running speed of the steel bar and the distance between the sensor and a braking position (or a fixed position at which the steel bar is to be stopped) and operates the braking device, whereby the steel bar stops exactly at the fixed position.
  • the steel bar G which is stopped at the fixed position is transferred to the side of the cooling bed proper 3. This transfer of the steel bar G is done by troughs forming the run-in table 1, and a steeply sloping chute, as shown in Figure 3.
  • Fig. 3 shows the lower main portion of the device according to the present invention.
  • a required number of frames 12 are fixed on the upper part of the cooling bed proper 3 throughout its whole length at regular intervals.
  • Each frame 12 is connected with the lowest steeply sloping chute 13 and another steeply sloping chute 13a is provided above the chute 13.
  • Spaced above the chutes 13, are fixed upper trough - closure plates 14, 14a.
  • Open groove type troughs 15 co-operable with both the fixed upper plates 14 and the chutes are mounted on arms 16, being separated into plural units in each frame and arranged in series.
  • the arm 16 is screwed to a fitting beam 17, to which are fixed an arm swinging lever 18 and an arm driving lever 19.
  • Reference numerals 15, 16, 17, 18 and 19 compose a one-body movable trough construction a supported swingably about an axis 20 of a bracket 21.
  • the arm driving lever 19 is connected by a pin to a link swinging lever 23 via a turn buckle 22.
  • the link swinging lever 23 is fixed to a link shaft 24, which is connected to the cooling bed in its whole length and is supported on the frame 12 by bearings 25.
  • a driving position for the link shaft 24 is provided at about the central part of the cooling bed.
  • a driving shaft lever 26 fixed to the link shaft 24 is connected by pin to a free end 27 of a cylinder 28 which is fixed to the cooling bed by a fitting seat 29.
  • Open troughs 15 arranged over the whole length of the cooling bed are transformed into closed tubular trough configurations B by the pushing up motion of the air cylinder 28.
  • the air cylinder 28 moves downwardly and the movable trough 15 descends.
  • the finished product G in the trough 15 is put on the chute 13 on which it slides down to fall on a first step groove 32 of a straightening table 31 of the cooling bed proper 3.
  • the movable trough a completes its downward opening motion at a position c below the chute 13, and before the next finished product enters the air cylinder 28 is raised and the open movable trough in opened position is restored to the closed configuration b ready for the following process.
  • the foregoing motion is done by one and the same mechanism, covering from the next portion to the uppermost portion.
  • movable rakes 33 which are saw-toothed on their top surface and extend the whole length of the cooling bed are held by saddles 34.
  • the saddles 34 straddles over an eccentric sheaves 35 and axles 36 make one revolution by a signal of the sensor 5 and moves by only one pitch of saw-teeth. Such motion is repeated in succession so that a steel bar is transferred from the run-in table side toward the run-out table side, during which the steel bar is cooled down.
  • steel bars are supplied onto a cooling bed at a predetermined position, with leading ends thereof aligned. Therefore, the succeeding feeding out process can be carried out precisely.
  • the movable trough a is supported in freely hanging state by an axis 20, such point of support by the axis is selected in due consideration of the weight balance of the structure so that both edges of the trough 15 press the undersurface of the fixed upper plate 14 and therefore even if gaps (shaking) take place and build up due to wear of any movable connecting parts, including the supporting point of the axis 20, which are caused by repeated opening and closing motion at high frequency and high speed, opening and closing motion of the movable trough a is not hindered, which is one of characteristics of this system.
  • Irregularity of processing accuracy or irregularity composing parts for the movable trough a namely, the trough 15, the arm 16, the fitting beam 17, the arm swinging lever 18 and the arm driving lever 19, and incomplete contacts of both edges of the trough 15 and the fixed plate 14 are all remedied individually and easily.
  • both edges of the groove type trough 15 of the movable trough a in close contact with the undersurface of the fixed upper plate 14, form a closed trough b in closed position and are maintainable, there is no fear that small steel bars bite into gaps of the trough, resulting in clogging and run out, resulting in stop of the following rolling process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chutes (AREA)
  • Heat Treatment Of Articles (AREA)
EP19890301722 1988-02-22 1989-02-22 A cooling bed for steel bar Expired - Lifetime EP0331340B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP22898/88 1988-02-22
JP2289888U JPH0539764Y2 (enrdf_load_stackoverflow) 1988-02-22 1988-02-22

Publications (2)

Publication Number Publication Date
EP0331340A1 EP0331340A1 (en) 1989-09-06
EP0331340B1 true EP0331340B1 (en) 1993-09-08

Family

ID=31241423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890301722 Expired - Lifetime EP0331340B1 (en) 1988-02-22 1989-02-22 A cooling bed for steel bar

Country Status (4)

Country Link
EP (1) EP0331340B1 (enrdf_load_stackoverflow)
JP (1) JPH0539764Y2 (enrdf_load_stackoverflow)
DE (1) DE68908916T2 (enrdf_load_stackoverflow)
ES (1) ES2044086T3 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1235089B (it) * 1989-06-01 1992-06-18 Simac Spa Dispositivo di raccolta e scarico barre in placca di trasferimento trasversale particolarmente per impianti di laminazione a caldo con canali di ricevimento mobili.
JP6198331B2 (ja) * 2014-03-26 2017-09-20 株式会社神戸製鋼所 棒鋼受渡装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE465625C (de) * 1926-12-09 1928-09-22 Albert Noell Foerdervorrichtung mit mehreren Auslaufrinnen, insbesondere fuer Kuehlbetten von Walzwerken
DE483199C (de) * 1928-01-03 1929-09-26 Demag Akt Ges Vorrichtung zur Walzgutfoerderung bei Kuehlbetten
DE923963C (de) * 1952-02-06 1955-02-24 Morgaardshammars Mek Verkst S Walzstababfuehrungsvorrichtung
DD156223A1 (de) * 1981-04-16 1982-08-11 Schulz Hans Juergen Verfahren und vorrichtung zum gesteuerten abbremsen von stabstahl
IT1187532B (it) * 1985-01-23 1987-12-23 Danieli Off Mecc Dispositivo di scarico in placca con comando positivo della chiusura

Also Published As

Publication number Publication date
ES2044086T3 (es) 1994-01-01
JPH0539764Y2 (enrdf_load_stackoverflow) 1993-10-08
EP0331340A1 (en) 1989-09-06
JPH01128903U (enrdf_load_stackoverflow) 1989-09-01
DE68908916T2 (de) 1994-01-13
DE68908916D1 (de) 1993-10-14

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