EP0179174B1 - Installation pour le cisaillage de tôles d'acier - Google Patents

Installation pour le cisaillage de tôles d'acier Download PDF

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Publication number
EP0179174B1
EP0179174B1 EP84307322A EP84307322A EP0179174B1 EP 0179174 B1 EP0179174 B1 EP 0179174B1 EP 84307322 A EP84307322 A EP 84307322A EP 84307322 A EP84307322 A EP 84307322A EP 0179174 B1 EP0179174 B1 EP 0179174B1
Authority
EP
European Patent Office
Prior art keywords
steel strip
shearing
installation
strip
steel
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
EP84307322A
Other languages
German (de)
English (en)
Other versions
EP0179174A3 (en
EP0179174A2 (fr
Inventor
Goji C/O Chiba Works Katsushima
Yoshio C/O Chiba Works Nakazato
Katsuhiko C/O Chiba Works Iwanuma
Masayuki C/O Chiba Works Morimoto
Keiji Yamasaki
Teruo Ichii
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.)
JFE Steel Corp
Kawasaki Motors Ltd
Original Assignee
Kawasaki Jukogyo KK
Kawasaki Steel Corp
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 Kawasaki Jukogyo KK, Kawasaki Steel Corp filed Critical Kawasaki Jukogyo KK
Priority to EP84307322A priority Critical patent/EP0179174B1/fr
Priority to DE8484307322T priority patent/DE3481176D1/de
Publication of EP0179174A2 publication Critical patent/EP0179174A2/fr
Publication of EP0179174A3 publication Critical patent/EP0179174A3/en
Application granted granted Critical
Publication of EP0179174B1 publication Critical patent/EP0179174B1/fr
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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/28—Associations of cutting devices therewith
    • B21D43/287—Devices for handling sheet or strip material
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/021—Control or correction devices in association with moving strips

Definitions

  • This invention relates to a shearing installation for steel plates or strips, and more particularly to a steel plate shearing line in which steel plates or strips are sheared into predetermined lengths while their surface states are inspected and according to the inspected results the sized plates are divided into acceptable and unacceptable products which are then piled in a piling apparatus, respectively.
  • plate or "steel plate” used herein is intended to designate a relatively thin steel plate such as a steel strip which is able to be wound about a reel.
  • Fig. 1 of the accompanying drawings illustrates a hitherto used steel plate shearing line installation.
  • a coil 12 of steel strip 10 is mounted on a pay-off reel 14 which is driven so as to unwind the steel strip 10 to supply it to the line.
  • the unwound steel strip 10 is fed in a free loop to a side trimmer 16 in which the strip 10 is treated such as by having its edges trimmed.
  • the trimmed strip 10 is fed, again in a free loop, into an automatic defect detector 18 and a pin hole detector 20 downstream of the side trimmer, where defects and pin holes on the surfaces of the strip are inspected or detected.
  • the steel strip 10 which has passed these detectors 18 and 20 is directly fed into a shearing machine 22 so as to be cut into steel strips of predetermined lengths. During the above processes, the steel strip 10 is forcedly pulled so as to be advanced by pinch rolls 24 incorporated in the shearing machine 22.
  • a piling apparatus Downstream of the shearing machine 22 is arranged a piling apparatus in which the sheared steel strips are transferred by a plurality of branched belt conveyors 26, 28, 30 and 32 so as to be piled up in respective pilers 34 and 36.
  • the pilers 34 and 36 are plural and steel strips having defects and hence to be rejected are piled in exclusive pilers for unacceptable products.
  • An installation of this type is described in "The Technology of Tin Plate", by Hoare, Hedges and Barry, Edward Arnold (Publishers) Ltd, London, 1965, Chapter 8, Figure 8.1.
  • the steel strip 10 unwound by the pay-off reel 14 is advanced by the pulling action of the pinch rolls 24 incorporated in the shearing machine 22.
  • a pulling action is provided for the purpose of feeding the steel strip into the shearing machine 22, its tensile force cannot be generally adjusted at will.
  • the steel strip 10 being transferred in the automatic defect detector 18 and the pin hole detector 20 is not subjected to a tensile force sufficient to prevent the steel strip from moving upward and downward.
  • support rolls 38 in contact with the lower surface of the strip 10 to maintain it at a constant level as shown in Fig. 1.
  • the strip 10 being transferred tends to sag because the number of support rolls is limited owing to the requirement resulting from the performance of the automatic defect detector 18 in conjunction with the small tensile force acting upon the strip as above described.
  • the upward and downward movements of the strip 10 often give rise to malfunction of the automatic defect detector 18 because it detects defects or cracks or flaws on the surfaces of the strip with the aid of light beam reflections.
  • the automatic defect detector 18 or the pin hole detector 20 detects defects on the strip, the sheared strips including such defects need to be separated from the remaining acceptable strips by being piled in the pilers for the unacceptable products.
  • a pulse generator (not shown) is arranged at one end of the pinch roll 24 so as to measure the lengths of the sheared strips and energize electromagnet rolls 40 selectively such that the strips including defects are introduced into the pilers exclusively reserved for the unacceptable products.
  • a steel strip shearing installation comprising a means of unwinding a steel strip from a pay-off reel and, in series downstream of the pay-off reel, an inspecting means for detecting defects on the steel strip, a shearing machine and piling means for piling sheared and classified steel strips, characterised in that the installation comprises bridle rolls between said inspecting means and said shearing machine for exerting tensile force on the steel strip between the pay-off reel and the bridle rolls to prevent the strip becoming slack or loose and to prevent upward and downward movement of the steel strip downstream of the inspecting means.
  • the bridle rolls are arranged immediately upstream of the shearing machine.
  • the tensile force preferably of the order of 0.1-2 kg/mm 2 , is sufficient to maintain the steel strip in a horizontal position, and is preferably adjusted by controlling the load current of the driving means of the pay-off reel and the bridle rolls.
  • the bridle rolls arranged between the inspecting means and the shearing machine exert tensile force on the steel strip in the installation line so as to transfer the strip in the horizontal position without any slack or upward or downward movement, thereby greatly improving the accuracy of detecting defects on the steel strip by an automatic defect detector or a pin hole detector and eliminating errors in the lengths of the steel strip as measured by a pulse generator provided on pinch rolls adjacent to the shearing machine.
  • the electromagnet rolls at branching points of the belt conveyors for the pilers are correctly operated with good timing to ensure the classification of acceptable and unacceptable products.
  • the steel strip 10 is then fed from the pin hole detector 20 to a shearing machine 22' including pinch rolls 24.
  • Bridle rolls 46 are arranged immediately upstream of the shearing machine 22' and between the pin hole detector 20 and the shearing machine 22' for the purpose of exerting tensile force on the steel strip 10 between the bridle rolls 46 and the pay-off reel 14.
  • the tensile force is a unit force of the order of 0.1-2 kg/mm 2 sufficient to maintain in a horizontal position the steel strip 10 being transferred for inspection by the detectors 18 and 20. This adjustment of the tensile force is effected at will by controlling the load current of driving motors (not shown) for the pay-off reel 14 and the bridle rolls 46.
  • the steel strip 10 which has passed through the bridle rolls 46 is fed to the pinch rolls 24 provided immediately upstream of the shearing machine 22' and then fed thereinto.
  • the shearing machine 22' comprises length measuring pinch rolls 24 driven together with the shearing machine 22' in unison.
  • the shearing machine 22' is numerically controlled by commands based on measured lengths in the pinch rolls to cut the steel strip into desired length strips without requiring any looping pit for accommodating loops of steel strips. (The shearing machine 22 of the prior art is mechanically controlled and requires the looping pit in order to compensate for the deviation in speed of those machines.) In this manner, the steel strips of predetermined lengths are then fed to properly selected pilers 34 by belt conveyors 26-32.
  • electromagnet rolls 40 At branching points of the belt conveyors for the respective pilers there are arranged electromagnet rolls 40 whose exciting effect determines the direction of movement of the steel strips to be transferred to the pilers. Accordingly, steel strips including defects detected by the above defect detectors are transferred to the pilers for unacceptable strips by means of the electromagnet rolls 40.
  • the steel plate shearing line constructed as above described, since the bridle rolls 46 provided between the defect detectors and the shearing machine 22' exert tensile force on the steel strip 10 between the pay-off reel 14 and the bridle rolls 46, the steel strip 10 does not undergo any upward and downward movements and does not sag when passing through the automatic defect detector 18 and the pin hole detector 20', so that defects on the strip surfaces can be exactly detected with improved accuracy even by defect detectors utilizing light beam reflections.
  • the length of the steel strip is simultaneously measured by a pulse generator provided on the pinch roll 24 immediately upstream of the shearing machine 22'.
  • a pulse generator provided on the pinch roll 24 immediately upstream of the shearing machine 22'.
  • the count number by the pulse generator at the detected position correctly indicates the length of the steel strip without any discrepancy so that the electromagnet rolls 40 at the pilers 40 are properly operated with good timing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Claims (6)

1. Installation pour le cisaillage de tôles d'acier comprenant un dispositif de déroulement d'une bande d'acier à partir d'un dévidoir (14) et, montés en série en aval du dévidoir, un dispositif de contrôle (18,20) assurant la détection des défauts de la bande d'acier (10), une machine de cisaillage et un dispositif d'empilage (34, 36) assurant l'empilage des bandes d'acier coupées et classées, caractérisée en ce que cette installation comprend des rouleaux à bride (46) intercalés entre le dispositif de contrôle (18, 20) et la machine de cisaillage (22') pour exercer une force de traction sur la bande d'acier, entre le dévidoir (14) et les rouleaux à bride (46) pour empêcher la bande (10) de se relâcher ou de pendre et pour empêcher tout déplacement de la bande d'acier vers le haut et vers le bas en aval du dispositif de contrôle (18, 20).
2. Installation pour le cisaillage de tôles d'acier selon la revendication 1, caractérisée en ce que la machine de cisaillage est soumise à une commande numérique.
3. Installation pour le cisaillage de tôles d'acier selon l'une des revendications 1 ou 2, caractérisée en ce que les rouleaux à bride (46) sont placés immédiatement en amont de la machine de cisaillage (22').
4. Installation pour le cisaillage de tôles d'acier selon une des revendications 1, 2 ou 3, caractérisée en ce que les rouleaux à bride (46) exercent une force de traction de 0,1 à 2 kg par mm2 de bande.
5. Installation pour le cisaillage de tôles d'acier selon une des revendications 1 à 4, caractérisée en ce que la force de traction se règle en réglant le courant de charge des dispositifs de commande du dévidoir et des rouleaux à bride.
6. Installation pour le cisaillage de tôles d'acier selon une des revendications 1 à 5, caractérisée en ce que les rouleaux pinceurs (24), qui comportent un générateur d'impulsions pour la mesure des longueurs de la bande d'acier (10), sont intercalés entre la machine de cisaillage (22') et les rouleaux à bride (46).
EP84307322A 1984-10-24 1984-10-24 Installation pour le cisaillage de tôles d'acier Expired - Lifetime EP0179174B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP84307322A EP0179174B1 (fr) 1984-10-24 1984-10-24 Installation pour le cisaillage de tôles d'acier
DE8484307322T DE3481176D1 (de) 1984-10-24 1984-10-24 Stahlblechscheranlage.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84307322A EP0179174B1 (fr) 1984-10-24 1984-10-24 Installation pour le cisaillage de tôles d'acier

Publications (3)

Publication Number Publication Date
EP0179174A2 EP0179174A2 (fr) 1986-04-30
EP0179174A3 EP0179174A3 (en) 1987-05-13
EP0179174B1 true EP0179174B1 (fr) 1990-01-31

Family

ID=8192788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84307322A Expired - Lifetime EP0179174B1 (fr) 1984-10-24 1984-10-24 Installation pour le cisaillage de tôles d'acier

Country Status (2)

Country Link
EP (1) EP0179174B1 (fr)
DE (1) DE3481176D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1204707B (it) * 1986-06-13 1989-03-10 Amada Co Ltd Macchina per la lavorazione di pezzi in lastra
CN104210803B (zh) * 2013-05-31 2016-09-21 中冶南方工程技术有限公司 一种高速剪后带钢输送装置
CN107756044B (zh) * 2017-11-23 2023-12-19 烟台盛创包装科技股份有限公司 金属板材打检测孔、印刷及分卷一体机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753464A (en) * 1950-08-11 1956-07-03 Republic Steel Corp Method and apparatus for inspecting tinplate
NL264816A (fr) * 1960-05-16
US3334795A (en) * 1965-07-15 1967-08-08 Gen Electric Selector switch for register control
US3448279A (en) * 1966-10-17 1969-06-03 Lindly & Co Inc Photoelectric defect detector having reflection test transmission test and edgewise test
JPS597656A (ja) * 1982-07-05 1984-01-14 Sumitomo Metal Ind Ltd 薄鋼板のトラツキング方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 8, no. 94 (M-293)[1581], 28th April 1984; & JP-A-59 7656 (SUMITOMO KINZOKU KOGYO K.K.) 14-01-1984 *

Also Published As

Publication number Publication date
DE3481176D1 (de) 1990-03-08
EP0179174A3 (en) 1987-05-13
EP0179174A2 (fr) 1986-04-30

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