US3760931A - Entry rollway for cooling beds for rod rolling mills - Google Patents

Entry rollway for cooling beds for rod rolling mills Download PDF

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Publication number
US3760931A
US3760931A US00875765A US3760931DA US3760931A US 3760931 A US3760931 A US 3760931A US 00875765 A US00875765 A US 00875765A US 3760931D A US3760931D A US 3760931DA US 3760931 A US3760931 A US 3760931A
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United States
Prior art keywords
rollway
bottom plates
cooling bed
entry
rods
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
US00875765A
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English (en)
Inventor
O Buchheit
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.)
Moeller and Neuman GmbH
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Moeller and Neuman GmbH
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Filing date
Publication date
Application filed by Moeller and Neuman GmbH filed Critical Moeller and Neuman GmbH
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Publication of US3760931A publication Critical patent/US3760931A/en
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    • 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
    • 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
    • B21B43/02—Cooling beds comprising rakes racks, walking beams or bars

Definitions

  • the invention relates to an entry rollway for cooling beds in rod rolling mills for guiding, retarding and separating rods following closely to one another.
  • the close sequence of the rods is obtained when the rods are cut to length of the cooling bed by rotary cutters arranged in front of the cooling bed.
  • the entry rollway is provided at the side remote from the cooling bed with fixed bottom plates running between the rollway rolls and with bottom plates which are adapted to be raised and lowered at the side nearest the cooling bed, the latter being the so-called braking shifters. Since each rod requires a braking path dependent on its speed in order to come to rest on the raised base plates on the cooling bed side and at least one adjacent slide channel, the length of the entry rollway is designed to suit the braking path for the maximum arriving speed of the products.
  • the cooling bed is however shorter than the sum of the maximum braking path plus the rod length so that the entry rollway is set forward from the cooling bed for a portion of the rollway.
  • the foremost rising and falling base plate of the entry rollway immediately beyond the rotating shears is arranged as a tapered guide member which, with the base plate raised on the cooling bed side and on which the preceding rods slide, deflects in each case the following rod to the part of the rollway with the stationary bottom plates.
  • the length of the entry rollway in front of the cooling bed corresponds to the braking path for the rods for the maximum arrival speed.
  • the rods come to rest exactly coincidentally with the length of the cooling bed. If however rolling is effected at a smaller speed which however is necessarily the case with larger roll products the rods being retarded, even if cut to the length of the cooling bed, no longer come to rest with their front and rear ends coincident with the ends of the cooling bed.
  • the length of the cooling bed must be extended towards the rolling for the smaller entry speeds at the cost of the rollway portion preceding the cooling bed which leads to occasional incomplete utilisation of the available cooling bed surface.
  • the entry rollway of the cooling bed is normally divided into two separately operating shifter groups (German Pat. No. 1,017,577).
  • the shifter group in the entry rollway in front of the cooling bed is the so-called deflector shifter group and the shifter in the region of the cooling bed is the braking shifter group. if rolling is effected at a lower speed the slide path of the rod is therefore smaller than the length of the entryrollway in front of the coolingbed control of the two shifter groups is necessary as hereinafter described.
  • the deflector shifter group must be controlled to move upwardly in order to perform the necessary separation of the rods before the tip of the following rod encounters the foremost tapered shifter of the entry rollway in front of the cooling bed.
  • the first entering rod is lifted from the conveyance region of the rolls of the entry rollway and shifted into the region of the deflector member on the bottom plates of this deflector.
  • the main part of this rod lies, however, on the driven rolls in the region of the still depressed brake shifters so that it is conveyed thereby onwards in the direction of the cooling bed.
  • This system of an entry rollway with a deflector shifter and a brake shifter group requires two drivers each with their own control in order to take account of the various entry speeds. Further the system cannot be applied if a rod cut to cooling bed length is sheared into several partial finished lengths. With the deflecting procedure described above already some partial lengths would have been subjected to complete braking on the raised deflector shifters and the cooling bed would not even be reached.
  • the object of the invention is to eliminate the influence of different entry speeds of the rods supplied to the entry rollway in reference to the length of the cooling bed or of the rod lengths to be transferred to the cooling bed, while employing a single drive system for the rise and fall bottom plates, in order that for any expected rolling speed rods can be supplied to the lengths of the cooling bed or also divided into shorter lengths and to permit the same maximum rod lengths to be used with the minimum cooling bed length.
  • the invention attains this object by the fact that sev- .eral tapered rod deflecting guide members are provided in spaced positions within the rollway section proceedinging the cooling bed and the common rise and fall drive of the guide members as well as of the bottom plates following the guide members is adapted to be cut off additively or progressively in the direction of travel of the rods.
  • the deflection point to the cooling bed can be displaced for a reduced rolling speed to ensure that in every case, even with a reduced brake path or divided cooling bed lengths, the ends of the rods reach the ends'of the cooling bed.
  • the whole lifting and lowering drive consists of a reciprocating pull rod with angle levers attached to the bottom plates on the cooling bed side.
  • component parts of the pull rod are connected together by hydraulic piston cylinder units which transmit tension only in the locked position but otherwise operate idly.
  • FIG. 1 is a plan of a rollway portion of the entry rollway following a rotating shears, with a portion of the cooling bed
  • FIG. 2 is a cross section through the entry rollway and
  • FIG. 3 shows a portion of a rise and fall drive for adjacent groups of tapered guide members and bottom plates.
  • the entry rollway 4 preceding the cooling bed 2 consists of rollway rolls 6 inclined towards the cooling bed, between which on the side of the entry channels remote from the cooling bed fixed bottom plates 8 are disposed and rise and fall bottom plates 10 are provided on the cooling bed side.
  • an entry rollway for high entry speeds is shown in which the rods ejected on to the rise and fall bottom plates 10 do not pass directly into the slide channel 12 from which they are lifted by the swing rakes of the rake cooling bed 2, but rather the still sliding rods pass with lateral movement into an intermediate channel consisting of the fixed bottom plates 14 and rise and fall bottom plates 16 as shown in German Pat. No. 1,066,528.
  • the present invention is directed particularly to the arrangement of several tapered guide members 22-30 spaced from one another and having lift and lower mechanisms running in the travel direction of the rods up to that for the final guide member 30, which are adapted to be connected individually, additively and progressively.
  • Each tapered guide member 22-28 is operatively connected as regards the cut-off action to a following rectangular bottom plate 100 as well as a further bottom plate 10b extending to a rearward tip.
  • the bottom plates 10b which taper rearwardly to a point complement the respectively following tapered guide members 22, 24, 26, 28 and 30 to form a rectangular bottom plate so that no gaps are left between the rollway rolls.
  • FIG. 3 The manner in which the control of the plate groups 20-28 with the associated bottom plates 10a and 10b is effected in accordance with the invention will be seen from FIG. 3. Two successive plate groups I and II in the direction of travel A of the rods will be seen and they have been indicated purely diagrammatically. It is assumed that the plate group I consists of the first tapered guide member 20 and the following bottom plates 10a and 10b. i i
  • the common lifting and lowering mechanism for all the base plates and guide members on the cooling bed side consists of a single pull rod 32 to which bell cranks 34, 36, 38 and 40 are attached by their downwardly extending arms. Horizontally extending arms of the bell cranks are pivotally connected to bearing members 41, 42, 44, and 46 of the plates.
  • each plate group I, II and so on is associated with a section 32a, 32b and so on of the pull rod 32.
  • Hydraulic piston/cylinder units are arranged between all the sections, with cylinder 48 hingedly connected at 52 to one section, for example 320, and with the piston 50 hinged at 54 to the following section, for example 32b.
  • the piston of each unit 48, 50 can be acted on by hydraulic medium on the side opposite to the piston rod by means of a pipe connection 56. If all the piston rods 50 are in the inward position as shown and locked by cutting off the pipe 56 to prevent movement in the direction B, the pull rod 32 is operable as a whole so that all the plate groups execute the same movements as the rise and fall bottom plates 10 over the whole entry rollway.
  • the result is secured that when rods run on to the entry rollway 4 at the maximum speed requiring the longest brake path the following rods in each case may be deflected by the first tapered guide member 20.
  • the drive for the first plate group I is cut off by opening the feed pipe 56 of the piston cylinder unit 50 following the section 32a.
  • the section 32a does not execute the longitudinal movement with the section 32 b and the bell cranks 34, 36 are not moved and remain inoperative as the result of an idle stroke of the piston rod 50 within the cyinder 48.
  • the rod section 32a beneath the plate I does not move due to the weight of plate group I so that the latter is not lifted.
  • the plate groups with the guide members 24, 26, 28 can be additively or progressively cut off so that for the minimum entry speed only the guide member 30 acts as a deflector and the drive therefore does not need to be controlled.
  • LAn entry rollway for cooling beds in rod rolling mills for guiding, retarding and separating closely following rods comprising:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
US00875765A 1968-11-12 1969-11-12 Entry rollway for cooling beds for rod rolling mills Expired - Lifetime US3760931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1808333A DE1808333C3 (de) 1968-11-12 1968-11-12 Auflaufrollgang für Kühlbetten in Stabstahlwalzwerken

Publications (1)

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US3760931A true US3760931A (en) 1973-09-25

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US00875765A Expired - Lifetime US3760931A (en) 1968-11-12 1969-11-12 Entry rollway for cooling beds for rod rolling mills

Country Status (4)

Country Link
US (1) US3760931A (fr)
DE (1) DE1808333C3 (fr)
FR (1) FR2023062A1 (fr)
GB (1) GB1263117A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310032A (en) * 1979-07-09 1982-01-12 Dextrous Engineering & Sales Corp. Apparatus for making paper clips
US20050091818A1 (en) * 2003-11-05 2005-05-05 Shore T. M. Bar delivery system and method
CN112658045A (zh) * 2020-12-28 2021-04-16 包头钢铁（集团）有限责任公司 一种螺纹钢在冷床上稳定停靠的夹尾停止装置及其方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3332732A1 (de) * 1983-09-10 1985-03-28 SMS Schloemann-Siemag AG, 4000 Düsseldorf Auflaufrollgang von kuehlbetten
DE19503081A1 (de) * 1995-02-01 1996-08-08 Goerlitz Waggonbau Gmbh Trieb- oder Steuerwagen mit einem Personenübergang

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU128734A1 (ru) * 1959-11-02 1959-11-30 В.А. Зарак Устройство дл подачи круглых прутков

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU128734A1 (ru) * 1959-11-02 1959-11-30 В.А. Зарак Устройство дл подачи круглых прутков

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310032A (en) * 1979-07-09 1982-01-12 Dextrous Engineering & Sales Corp. Apparatus for making paper clips
US20050091818A1 (en) * 2003-11-05 2005-05-05 Shore T. M. Bar delivery system and method
US7069759B2 (en) 2003-11-05 2006-07-04 Morgan Construction Company Bar delivery system and method
CN112658045A (zh) * 2020-12-28 2021-04-16 包头钢铁（集团）有限责任公司 一种螺纹钢在冷床上稳定停靠的夹尾停止装置及其方法

Also Published As

Publication number Publication date
DE1808333C3 (de) 1985-01-10
GB1263117A (en) 1972-02-09
DE1808333A1 (de) 1970-09-24
FR2023062A1 (fr) 1970-08-07
DE1808333B2 (de) 1978-03-30

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