Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/02—Winding-up or coiling
  • B21C47/04—Winding-up or coiling on or in reels or drums, without using a moving guide
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/26—Special arrangements with regard to simultaneous or subsequent treatment of the material
  • B21C47/267—Scrap treatment
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/32—Tongs or gripping means specially adapted for reeling operations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C49/00—Devices for temporarily accumulating material

Definitions

• the present invention relates to a device and a method for reeling shears from shearing strip steel strip according to the preamble of claims 1 and 6.
• the invention relates to the transformation of steel strips in continuous scrolling, in particular continuous shearing of the lateral edges or banks of said strips.
• lateral edges of the rolled steel strips may have, after hot rolling, defects of different types, including cracks or "cracks" which must imperatively be eliminated before continuing the processing operations of the strip, by cold rolling for example, in order to eliminate breaks on the band during these operations.
• the rolled strips must be put to a required width and within the tolerances required before being placed in the customer's place in the form of reels. For this, we practice a shearing of the side edges of moving strips with circular blade shears simultaneously cutting the two edges of the edges. Such shears are used, as the case may be, at the outlet of a stripping or continuous annealing line, between stripping and rolling sections of combined lines or on lines specifically devoted to shearing.
• the bundling device must be able to reel the shearing shear from the two shearing heads on either side of the width of the strip.
• the falls have a thickness ranging from less than 1 mm to more than 5 mm, a small width that can vary from a few millimeters to a few tens of millimeters, and scroll at a speed of several meters per second.
• a crucial point is to ensure a transfer of the falls from the shear blades to the bundling device, then their engagement on a winding axis to initiate the reel.
• a technique is now employed which, with a few variations, consists in guiding the falls at the exit of the shearing blades into chutes which widen to a chamber or accumulation pit preceding the bundling device.
• An object of the present invention is to provide a device and a method and thus to automate a coil reeling of shearing shears strip steel, so in particular to avoid direct human intervention.
• the invention thus has such a device and such a method according to claims 1 and 6.
• a set of subclaims also has advantages of the invention.
• the invention thus provides a device for reeling shearing slips from continuous strip steel strip edges, comprising:
• a bundling drum comprising a winding axis between two lateral faces of said drum
• said device also comprises:
• a winding mandrel is insertable along the drum winding axis through a central opening of a side faces of said drum
• a counter pressure member cooperates coaxially therewith, by pinching the ball head with the mandrel.
• the shearing of the shearing falls according to the invention can be carried out without the need for human intervention.
• the back-pressure element may advantageously comprise a coaxial pressure roller with the mandrel activatable in translation along the drum winding axis, ideally by a jack which ensures a longitudinal approach to the desired nip of the drum. pelota head between a section of the mandrel and a section of the pressure roller.
• Another advantage of the invention is to provide the device with a gripping means coupled to an extensible arm, ideally telescopic.
• the said extensible arm has an extended mode, for which the gripping means can interact with a piston disposed in the accumulation chamber, the latter being adapted to compact, approach and force to hook the pelota head on said gripping means.
• the arm After hooking the pelota head on said gripping means, the arm has a retracting mode for automatically bringing the pelota head secured to the gripping means to the winding axis on which follows the nip between the mandrel and the counter element. -pressure.
• the extensible arm provides, at the end of the retraction mode, a transient position of the gripping element such that the pelota head is brought into 1 'winding axis, while the mandrel is inserted partially to the pinch by cooperation of the counter-pressure element.
• This transient position makes it possible to place the gripping tool out of the pinching zone, while ensuring that the head of the ball is placed in the pinching zone.
• the mandrel can then be activated in rotation to engage the reel of the ball according to its axis of rotation.
• the extensible arm can be retracted out of the baleing drum and thus increase its distance with the chuck in rotation, which allows to separate the pelota head from the gripping means while ensuring a securing of the ball in the pinching zone pelota with the mandrel.
• a shear is disposed between the bale drum (while the mandrel is inserted between the two winding drum faces) and a balloon outlet of the accumulation chamber, activatable in section by an instantaneous gauge thickness measuring means.
• winding ideally comprising a pressure roller or / and an optical system. Thanks to this shear, the continuous introduction of the accumulation chamber on the rotating mandrel (in the winding mode and for which the winding reaches its maximum capacity) is then stopped automatically.
• the pressure roller which extends between the two side faces of the drum gives an insertion stop signal resulting in an activation signal of the moving ball cut at the input of the bale drum.
• the pressure roller may also provide other winding condition measurement information signals such as an empty mandrel (pinch failed if the measured mandrel section thickness is / remains minimal) or an unexpected interruption of the core condition. introduction of ball (measured thickness of mandrel section in rotation greater than that of the mandrel and constant after a determined duration).
• the accumulation chamber is provided with a surveillance system by at least one camera enabling the local supervisor to check the smooth running of the operations.
• a gripping means adapted to bring a head of the ball to a winding axis of a bale drum to initiate the winding of the ball between two side faces of said drum, characterized in that
• the method also has the following features and steps: A) - in order to ensure a gripping of the pelota head by the gripping means in extended mode towards the accumulation chamber, compacting and maintaining a portion of ball on a side wall of the accumulation chamber are performed by a piston device located inside said chamber and acting perpendicularly to said wall,
• an introduction of the spool (or at least the winding mandrel) on a discharge conveyor is effected by means of a spoon which by pivoting allows the bale drum to release the wound mandrel.
• FIG. 2 (2a to 2i) Principle of operation of a device for reeling falls (or baler) according to the invention in side view
• FIG. 3 Example of realization of a baler according to the invention in front view.
• Figure 1 presents the principle of operation of a shear shears (CR) and of the evacuation of the falls (C) in lateral view, that is to say in the running direction of a strip (B) whose Shores are sheared to form the falls to be evacuated to a bottler.
• the strip (B) thus passes through the shear cutter (CR) and the drop (C) emerging from the two circular blades (at the right and left internal edges of the strip) is deflected by a deflector (DF) towards a chute (Gl) towards a fragmentation or bundling device.
• the shear shears have two symmetrical heads, each cutting one of the two edges of the band.
• the drop (C) arrives by an additive chute (G2) between rotary drums of a cutter (CC) whose knives ensure the fragmentation (CF) of the band sequentially and periodic over its width. It thus comes out of band blades whose size makes it possible to evacuate them more easily.
• the fall (C) accumulated in an accumulation pit (not shown) is manually introduced with a clamp (P) or a hook in an additive chute (G3) leading to the baler.
• the fall is then wound on a rotating mandrel (M) and turns thus formed. are pressed and compacted by a pressure roller (RP) to form a coil (CB) around the mandrel.
• RP pressure roller
• FIG. 2 presents the principle of operation of the device for reeling falls (or baler) according to the invention in side view, as part of a complete process in the form of successive steps (FIGS. 2a, 2b, 2c). , 2d, 2e, 2f, 2g, 2h, 2i) since the arrival of sheared bank falls in the baler to a bobbin discharge conveyance filled by said baler.
• a device for reeling shears from shearing strips of continuous strip of steel comprising:
• a bank shear derives the banks in a feed chute (not shown) to the accumulation chamber (2) of the shore falls as a ball (1),
• a bundling drum (7) comprising a winding axis between two lateral faces of said drum
• a gripping means (4) adapted to bring a head of the ball of the accumulation chamber to the winding axis to initiate the reel of the ball
• a winding mandrel (6) insertable along the winding axis of the drum through a central opening of one of the lateral faces of said drum,
• a counter-pressure element (still not shown, but shown in Figure 3, marks 722, 723) cooperating coaxially therewith, by pinching the ball head with the mandrel.
• step 2a the fall arrives in an accumulation chamber (2) where it is left to proliferate and forms a ball (1).
• step 2b as soon as the ball (1) arrives facing a piston (3), which can move parallel to the axis of rotation of the bundling mandrel, a thrust face of said piston pinches and compact slightly the ball head against an inner side wall of the accumulation chamber (2), said wall being located vis-à-vis the pelota introduction side on the mandrel in the bundling device and provided with an opening.
• a thrust face of said piston pinches and compact slightly the ball head against an inner side wall of the accumulation chamber (2), said wall being located vis-à-vis the pelota introduction side on the mandrel in the bundling device and provided with an opening.
• an extensible arm (4) such as telescopic held until now in the withdrawing position of the accumulation chamber deploys until its end provided with a means or gripping tool (5) reaches via the opening of the wall the vicinity of the piston (3) and is in position to hook at least a portion of the compacted ball between the piston (3) and the side wall of the accumulation chamber (2).
• step 2d after attachment of the ball (1) by the gripping tool (5), the piston (3) is removed from its compacting position and the telescopic arm (4) is positioned at the end of said ball in the axis of rotation of the mandrel (6) which, previously held in the retracted position out of the bundling device, is introduced by a drum side face into the bundling drum (7) until pinching the head of the ball against a back pressure device (shown in FIG. 3c, item 722) arranged coaxially with the mandrel and insertable by the other side face of the drum towards a mandrel section.
• a back pressure device shown in FIG. 3c, item 722
• step 2e the gripping tool (5) releases the ball head, the mandrel (6) presses said ball head onto the backpressure device and then the mandrel rotates and forms in the drum bundling (7), a reel (9) whose fall turns are compacted by a pressure roller (8) whose axis of rotation extends between the two side faces of the drum parallel to that of the mandrel.
• step 2f the coil (9) reaches its maximum diameter measurable by the pressure roller (8).
• a strong shear (10) disposed between the bale drum and a balloon outlet of the accumulation chamber is thus activatable in section by means of instantaneous thickness measurement of the winding, ideally comprising the pressure roller (8) or an optical system (light barrier on the outer surface of the drum).
• This strong guillotine (10) separating the accumulation chamber (2) of the bundling device thus cuts the ball and the mandrel (6) is rotated to complete the winding and compacting of the coil (9) thus formed.
• step 2h the mandrel and the backpressure device are laterally separated from the baleing drum, and as a result, the filled spool (9) and disengaged from the drum falls out of the baler according to the invention by simple gravitation in an evacuation spoon (11) disposed under the drum.
• step 2i the spoon (11) needle the coil (9) to a discharge conveyor (12) of full coils.
• the device according to the invention is then ready to resume its cycle according to Figure 2b and the following steps.
• the accumulation chamber comprises at least one camera, or even other optical detectors respectively making it possible to check the good follow-up of the steps (by an operator) and to indicate filling states of the chamber of accumulation with falls or the position of the piston as well as falls associated with it.
• Figure 3 shows a detailed example of realization of a baler according to the invention in front view.
• a fixed holding structure (61) receives a rotation system (62) of the mandrel (6) which can be moved along its axis of rotation between a bunching position as shown in Figure 3 (mandrel between the side faces (71)).
• Said lateral faces (71, 72) of the bundling drum (7) consist of a first plate (71) open at its center to allow free passage of the mandrel (6) and rotatably mounted on bearings (711) themselves.
• a back pressure device such as a cylinder coaxial with the mandrel and having a solid section to be brought into contact with a solid section of the mandrel for gripping the ball.
• the nip sequence may be described as follows: the back pressure device (722) is held in the advanced position through the second platen (72), preferably flush with the inner face thereof; via the opposite end of the drum, the mandrel advances to an intermediate position, thereby pinching the ball against the back pressure device (722); the gripping member is then released from the pincushion by a forced withdrawal; the mandrel advances at the end of stroke by crushing the ball against the counter-pressure device (722), a jack (723) of which is controlled by pressure and which allows the backpressure device to move back under the thrust of the mandrel while retaining a sufficient pressure of pinching on the ball. In this way, the mandrel can go to the end of the race along the axis of the drum, whatever the thickness of the ball.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Basic Packing Technique (AREA)
• Winding, Rewinding, Material Storage Devices (AREA)

Priority Applications (3)

Applications Claiming Priority (1)

Publications (1)

Family

ID=40220035

Family Applications (1)

Country Status (3)

Cited By (3)

Families Citing this family (4)

Citations (2)

Family Cites Families (2)

• 2008
  • 2008-04-16 CN CN200880129871.6A patent/CN102066017B/zh not_active Expired - Fee Related
  • 2008-04-16 WO PCT/FR2008/000544 patent/WO2009127790A1/fr active Application Filing
  • 2008-04-16 EP EP08787971A patent/EP2279049A1/de not_active Withdrawn

Patent Citations (2)

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