EP0132819A1 - Device for adjusting a metal band in a processing station - Google Patents

Device for adjusting a metal band in a processing station Download PDF

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Publication number
EP0132819A1
EP0132819A1 EP19840108662 EP84108662A EP0132819A1 EP 0132819 A1 EP0132819 A1 EP 0132819A1 EP 19840108662 EP19840108662 EP 19840108662 EP 84108662 A EP84108662 A EP 84108662A EP 0132819 A1 EP0132819 A1 EP 0132819A1
Authority
EP
European Patent Office
Prior art keywords
strip
adjusting
signal
edge
interrogation
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.)
Granted
Application number
EP19840108662
Other languages
German (de)
French (fr)
Other versions
EP0132819B1 (en
Inventor
Hans Braun
Helmut Braitinger
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.)
Schuler AG
Original Assignee
L Schuler GmbH
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
Priority to DE19833326955 priority Critical patent/DE3326955A1/en
Priority to DE3326955 priority
Application filed by L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP0132819A1 publication Critical patent/EP0132819A1/en
Application granted granted Critical
Publication of EP0132819B1 publication Critical patent/EP0132819B1/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/3408Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material
    • B21C47/3425Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material without lateral edge contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34Feeding or guiding devices not specially adapted to a particular type of apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/3408Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material
    • B21C47/3416Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material with lateral edge contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, 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
    • B21D43/02Advancing work in relation to the stroke of the die or tool
    • B21D43/021Control or correction devices in association with moving strips
    • B21D43/023Centering devices, e.g. edge guiding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00Registering, tensioning, smoothing or guiding webs
    • B65H23/02Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204Sensing transverse register of web
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00Registering, tensioning, smoothing or guiding webs
    • B65H23/02Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032Controlling transverse register of web
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/44Moving, forwarding, guiding material
    • B65H2301/442Moving, forwarding, guiding material by acting on edge of handled material
    • B65H2301/4421Moving, forwarding, guiding material by acting on edge of handled material by abutting edge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/17Nature of material
    • B65H2701/173Metal

Abstract

1. Device for aligning the centre position (58) of a metal strip (2, 3), which is running off a coil, with the centre position (59) of a machining station (55), comprising an adjusting device (8, 9, 11, 12, 13, 14) for transversely adjusting the metal strip (2, 3), a strip edge sensing device for detecting the two strip edges (7), the sensing means of which (17, 19 and 18, 21) are attached transversely to the direction of passage (6) of the metal strip (2, 3) behind one another on carriers (8, 9) which are adjustable with respect to one another in this direction (57) and symmetrically by equal distances, and comprising an evaluation circuit (41) for the signals coming from the sensing means (17, 18, 19, 21), for triggering an alignment movement of the metal strip (2, 3), characterized in that the carriers (8, 9) for aligning and guiding the metal strip (2, 3) can be placed against the strip edges (7) of the latter, that an actuator (14) and means (27 to 32) for controlling the actuator (14) are provided for adjusting the carriers (8, 9) at two traversing speeds of different rapidity towards one another and away from one another, and that the evaluation circuit (41) comprises circuit means for converting a signal, which is manually triggered via a key input (43), from an attachment set (4) or possibly internally in the circuit, into a rapid opening movement of the carriers (8, 9) with a subsequent rapid closing movement of the carriers (8, 9) which is automatically triggered following a signal via a measuring sensor (42) or following a signal of a manual input (43), for converting a signal of the sensing means (17, 18), which first detects one strip edge (7), into a slow closing movement of the carrier (8, 9) and for converting a signal of the sensing means (19, 21), which last detects the strip edge (7) opposite to the first strip edge (7), into a stop of the carriers (8, 9).

Description

  • The invention relates to a device for aligning a metal strip running from a coil to a processing station with a strip edge interrogation device for detecting a strip edge, an adjusting device for the transverse adjustment and guiding of the metal strip and an evaluation circuit for the signals of the strip edge interrogation device for triggering a transverse adjustment of the metal strip.
  • For punching, shearing and similar processing devices for the chipless separation of workpieces and blanks from the metal strip running in front, it is necessary to align the metal strip with respect to the processing station. For this purpose, switching elements which can be acted upon without contact are used, which query the position of a strip edge without detecting the strip center.
  • According to DE-AS 25 34 823, the edge of a metallic web is queried by means of inductive transducers with a measuring surface arranged perpendicular to the web. Here, the signal characterizing the distance of the web edge to the measuring surface is used as a reference variable for the readjustment setting. A center scan is not carried out and a center alignment of the metallic web is also not possible via the strip edge scan.
  • In the article "17 Ways to Track the Fdge" by SL Sorsen in Control Engeneering, May 1964, pages 77 uff. For example, in Figure 4 two light sensors are used as non-contact sensors to query an edge. Signaling via the light sensor does not become a speed rain a control movement of the strip controlled transversely to the possible longitudinal movement of the strip is evaluated.
  • US Pat. No. 3,610,546 shows and describes an automatically acting strip alignment device in a processing line with a welding device for metallic connection of the end of a used metal strip unwound from a first coil to the beginning of a new metal strip that can be unwound from a second coil.
  • The strip edge interrogation device comprises a measuring sensor per metal strip in the manner of a contactless proximity switch for adjusting the interrogation device and for detecting the strip edge during operation, as well as a touch contact switch for extending the adjusting device when the metal strip is in contact with the contact switch. The interrogation means are attached to a common support that can be adjusted transversely to the direction of travel of the tape by an electric motor. The belt edges are adjusted by means of actuators acting on the coils and hydraulically adjusting them transversely to the belt running direction. The impulses emanating from the interrogation means are evaluated for the actuators by an analog electrical evaluation circuit with electrically triggerable solenoid valves in the hydraulic circuit. The strip edge interrogation device is arranged between the coiles and the welding station. The metal strips to be connected to one another are aligned with the same edges, but not with respect to their centers to a specific processing station.
  • In contrast, it is an object of the invention to guide the passing metal strip in the area of the strip edge interrogation device in a strip loading system by means of the device specified in the preamble of claim 1 and to align the same in relation to a subsequent processing station. In particular, metal strips of different widths previously welded to one another are to be aligned and guided centrally to the subsequent processing station.
  • This object is achieved in that a strip edge interrogation device is arranged for each longitudinal strip edge, each with two interrogation means, which are fastened one behind the other essentially transversely to the direction of travel of the metal strip on supports of the adjusting device which are adjustable in the same direction but relative to one another, and that the evaluation circuit comprises switching means for converting a signal of the interrogation means first detecting a band edge into a slow closing movement of the adjusting device, for converting a signal of the interrogation means last detecting the opposite band edge into a stop of the adjusting device and for the original conversion of a signal which is transmitted manually A key entry, triggered by a kit or possibly inside the circuit, is in a rapid open movement with automatic closing movement triggered thereon or on a signal of a manual input.
  • This prevents the metal strip from running out of the limited track. The presetting is done with a quick opening and closing of the guide means. The fine (-end) setting is done slowly via independent sensors. The stepped transverse adjustment thus advantageously prevents damage to the metal strip and ensures accurate delivery to a processing station, e.g. a press tool, possible. The device for guiding metallic webs can surprisingly be used for a zigzag pass through a cutting press.
  • With the device according to claim 2, it is suitable for use in press lines.
  • The arrangements according to claims 3 and 4 enable the use of film webs without damaging the band edge.
  • According to claim 5, precisely controllable actuating means are used, using available press options. The lack of leakage inherent in these devices is compensated for by a braking unit, which thin film webs in turn need not be activated.
  • The feature according to claim 6 relates to press-specific conditions and enables the metal strip to be aligned on centers that differ from tool to tool, and a zigzag pass.
  • The invention will be explained in more detail below with reference to exemplary embodiments shown in the drawing j. Show:
    • 1 shows a first embodiment according to the invention,
    • 2 shows a possible evaluation circuit of an electrical type,
    • Fig. 3 shows the embodiment shown in Fig. 1 using different width Mstallbahnen and
    • Fig. 4 shows another embodiment according to the invention.
  • The strip 2 of a metallic and possibly non-metallic type coming from a reel and running off the coil is fed according to the example shown in FIG. 1 straightening rollers or a welding apparatus 4 and then enters the area of the strip edge detection devices 1 and 10.
  • The strip edge detection devices are upstream of a processing station, for example a cutting tool 55 (FIG. 4). During a short standstill phase, the following strip 3, weld seam 5, was welded onto the end of the metallic strip 2. The strips are successively detected and guided by the strip edge interrogation devices during the further passage, arrow 6. The strip edge interrogation devices comprise two carriers 8, 9 movable in the direction of the arrows 57. The carriers are connected via a rack-11, gear-12, shaft-13 drive to an adjusting means, for example a hydraulic motor 14 that runs to the left and right. This drive via counter-rotating racks always enables central adjustment.
  • The carriers carry transducers 17, 18, 19, 21, sensors of inductive, photo-optical or other known type, which are arranged in pairs and in the direction 57 of the transverse adjustment movement one behind the other, and rollers 22, whose axis of rotation by 90 degrees to the width extension of the metallic strip 2, 3 are aligned to abut the strip edges 7 of the metallic strip in operation. The transducers 19, 21 can be arranged in the center dimension of their measuring surfaces in the roller conveyor plane formed by the rollers 22. The hydraulic motor 14 can be controlled via a hydraulic control circuit for fast and slow left and right rotation. The slow open movement is generally not used. In the of the Main pressure line 23 coming and into the lines 33, 34 leading to the pressure medium discharge line 24 are each a 4/3 way valve 27, 28, via the lines 30 controllable check valves 29, throttles 32 and check valves 31 connected in parallel to these. The throttles 32 are used to adjust the speed of the hydraulic motor 14. The hydraulic motor 14 is at least temporarily held at least temporarily by means of the brake 16, which can be acted upon and relieved of pressure via a 3/2-way valve 26 connected to the pressure line 36. The valves are electrically controlled via magnets 46, 47, 48, 49, 51 by means of the evaluation circuit according to FIG. 2.
  • FIG. 3 shows the strip edge interrogation devices in an open position of the adjusting device 8, 9, 11, 12, 13, 14 and the transducers 17, 18, 19, 21 that are inevitably carried with them. Furthermore, the use of metallic strips 2, 3 of different widths is shown . Otherwise, the same reference numbers are used for FIG. 2 and the other figures for the same components.
  • Fig. 4 shows the possibility of aligning the adjusting device 8, 9, 11, 12, 13, 14 on the tool 55 shown here. The adjusting device including the belt edge interrogation devices is positively guided in slide guides 53 fixed to the frame and can e.g. can be adjusted by means of a double-acting cylinder-piston unit 54 in the direction of arrow 56 until the centers 58, 59 of band edge interrogation devices and tools match.
  • The evaluation circuit shown in FIG. 2 comprises an electronic component 41 for querying and storing the switching states of the connected units and for converting them into output signals. This module 41 operates in the manner of bistable flip-flops - flip-flops - whereby an existing signal at the input at the output is retained and thus maintains the desired switching state, fast forward, slow forward, until the input is maintained by setting another signal or by resetting, for example by entering via the keyboard 43 or internal timers.
  • As shown, the circuit can be constructed digitally but also analog. At the input of the flip-flop 41, in addition to, for example, an inductive transducer 42 for detecting the open state of the Belt edge interrogators connected as photo elements or opto-couplers, sensors 17, 18, 19, 21 as well as the keyboard 43 for manual input, for example for a start command, which basically brings the belt edge interrogators into an open position. The magnets 46, 47, 48, 49 and 51 of the valves in the control circuit of the hydraulic motor 14 are connected to the outputs of the flip-flop 41 via driver amplifiers 44.
  • Starting from the possibility shown in FIG. 3 of feeding metal strips of different widths to a processing station, the evaluation circuit according to FIG. 2 is explained in more detail below. The open signal can take place via the keyboard 43, from the welding apparatus 4 or as an internal command from the component 41 and causes the adjusting device to be opened quickly. In this case, the lines 34 coming from both valves 27, 28 and leading to the hydraulic motor 14 are placed on the pressure line 23 by acting on the solenoid coils 48, 51. As a result of a digital signal at the output of the sensor 42, the valves 27, 28 are now switched by applying voltage to the solenoids 47, 49, so that the rotation of the hydraulic motor 14 is effected. If one of the two transducers 17, 18 passes over a band edge when the adjustment device is closed in this way, a magnetic valve 28 is switched off as a result of the digital signal now present at the input of the component 41, whereby the hydraulic motor 14 until a signal of one of the transducers 18, 21 occurs , namely the transducer of the pair previously not emitting a signal, in a slow motion the metallic band 3 resting on a roller conveyor moves transversely.
  • Opening the carrier 8, 9 in rapid traverse requires that no signal is present at the inductive transducer 42 and a signal via the keyboard 43, from the ballast, the welding apparatus 4 or via an internal timer which is connected to the module 41 the memory is given. The signaling by the inductive transducer 42 causes the carrier to close in rapid traverse. This presupposes that no signal is present at any of the sensors 17, 18.

Claims (6)

1. Device for aligning a metal strip (2, 3) running from a coil to a processing station (55), with a strip edge interrogation device (1, 10) for detecting a strip edge (7), an adjusting device (8, 9, 11, 12, 13, 14) for the transverse adjustment (57) and guiding (22) of the metal strip and an evaluation circuit (41) for the signals of the strip edge interrogation device for triggering a transverse adjustment of the metal strip, characterized in that for each longitudinal strip edge (7) a strip edge interrogation device (1, 10) is arranged with two interrogation means (17, 19 or 18, 21), which are arranged essentially transversely to the direction of travel (6) of the metal strip (2, 3) one behind the other on supports (8 , 9) of the adjusting device (8, 9, 11, 12, 13, 14) are fastened, and that the evaluation circuit (41) comprises switching means for converting a signal of the interrogation means (1) which first detects a band edge (7). 17, 18) into a slow closing movement of the adjusting device, for the conversion of a signal of the interrogation means (19, 21) last detecting the opposite band edge (7) into a stop of the adjusting device and for the conversion of a signal which is entered manually via a key input (43) , is triggered by a stem kit (4) or possibly inside the circuit, in a rapid open movement with automatic closing movement triggered thereon or on a signal of a manual input.
2. Device according to claim 1, characterized in that the strip edge interrogation devices (1, 10) between a welding apparatus (4) and the first processing station (55) are arranged.
3. Device according to claim 1, characterized in that the belt system of each adjusting device is formed from a roller conveyor (22) aligned perpendicular to the metal track (2, 3) and the center of each interrogation means (19, 21) that last detects the respective belt edge (7). is arranged in the roller conveyor plane.
4. Device according to claim 3, characterized in that query means (19, 21) are arranged in the extension of the Ro1- lenbahnebene.
5. The device according to claim 1, characterized in that the adjusting device (8, 9, 11, 12, 13, 14) has a hydraulically active servomotor (14), and that this can be braked via a braking unit (16) at least at times of standstill is.
6. The device according to claim 1, characterized in that the adjusting device (8, 9, 11, 12, 13, 14) in its central position (58) via an adjusting means (54) with respect to the central position (59) of the processing stage (55 ) is adjustable.
EP19840108662 1983-07-27 1984-07-21 Device for adjusting a metal band in a processing station Expired EP0132819B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19833326955 DE3326955A1 (en) 1983-07-27 1983-07-27 DEVICE FOR ALIGNING A METAL STRIP ON A MACHINING STATION
DE3326955 1983-07-27

Publications (2)

Publication Number Publication Date
EP0132819A1 true EP0132819A1 (en) 1985-02-13
EP0132819B1 EP0132819B1 (en) 1987-12-23

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EP19840108662 Expired EP0132819B1 (en) 1983-07-27 1984-07-21 Device for adjusting a metal band in a processing station

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DE (2) DE3326955A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600943A1 (en) * 1986-03-17 1988-01-08 Bobst Sa Method and device for controlling the adjustment of the organs of a machine for graphic arts and cardboarding
EP0481323A1 (en) * 1990-10-12 1992-04-22 Bruderer Ag Method for feeding a production machine with a precision centering and apparatus therefor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511189C2 (en) * 1995-03-27 1997-07-03 Rohde & Schwarz Method and device for aligning strip material as it is fed into a strip material processing machine
CN102950168B (en) * 2011-08-23 2014-11-05 上海宝钢设备检修有限公司 Automatic centering logic numerical control device of cold-rolled strip steel uncoiler

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH251942A (en) * 1944-06-01 1947-11-30 Duralumin & Du Cuivre Comp Gen Device for centering and guiding the ingots and sheet metal rolling mills.
US2842361A (en) * 1956-02-13 1958-07-08 Armco Steel Corp Automatic strip alignment control
AT224058B (en) * 1961-02-22 1962-11-12 Voest Ag Device for lateral guidance of sheet metal strips and skin-pass rolling at od. Like.
US3610546A (en) * 1969-08-13 1971-10-05 Francis J Mcgorry Automatic strip alignment system
EP0041743A2 (en) * 1979-09-18 1981-12-16 FOCKE & CO. Means for controlling the position of a moving web, particularly a roll support

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH251942A (en) * 1944-06-01 1947-11-30 Duralumin & Du Cuivre Comp Gen Device for centering and guiding the ingots and sheet metal rolling mills.
US2842361A (en) * 1956-02-13 1958-07-08 Armco Steel Corp Automatic strip alignment control
AT224058B (en) * 1961-02-22 1962-11-12 Voest Ag Device for lateral guidance of sheet metal strips and skin-pass rolling at od. Like.
US3610546A (en) * 1969-08-13 1971-10-05 Francis J Mcgorry Automatic strip alignment system
EP0041743A2 (en) * 1979-09-18 1981-12-16 FOCKE & CO. Means for controlling the position of a moving web, particularly a roll support

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Ch Sektion, Woche B26, 8. August 1979 DERWENT PUBLICATIONS LTD,. London Seite 3 * SU 621 411 (UKR TYAZHPROMELEKTR) * *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600943A1 (en) * 1986-03-17 1988-01-08 Bobst Sa Method and device for controlling the adjustment of the organs of a machine for graphic arts and cardboarding
EP0481323A1 (en) * 1990-10-12 1992-04-22 Bruderer Ag Method for feeding a production machine with a precision centering and apparatus therefor
US5482225A (en) * 1990-10-12 1996-01-09 Bruderer Ag Process for loading a processing machine having a fine centering step and apparatus for this purpose

Also Published As

Publication number Publication date
DE3326955A1 (en) 1985-02-07
EP0132819B1 (en) 1987-12-23
DE3468181D1 (en) 1988-02-04

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