摘要:
The present invention relates to a mandrel comprising a radially movable portion (6, 8) and a retaining device for a sleeve (7) having an annular cross-section. Said device comprises a mounting (14), inserted in or built into the mandrel, and a retaining tab (1) pivotably mounted around an axis (3) that is in a direction parallel to the axis of the mandrel and onto said mounting (14). Said retaining tab (1) is designed to be, during use, pivotable from a first position, in which said retaining tab covers a portion of the annular surface of the sleeve (7), toward a second position, in which said retaining tab releases the annular surface of the sleeve (7). The pivotal movement from the first position toward the second position, or vice versa, is, during use, automatically actuated by radially moving the movable portion (6, 8) of the mandrel.
摘要:
The invention relates to a method and a decoiler mandrel for winding metal strip material (110), wherein the decoiler mandrel (100) comprises a mandrel body (120), a plurality of radially spreadable segments (115) being disposed about the mandrel body (120), and a plurality of hydraulic cylinders (116) through which the segments (115) are moved radially. In order to also be able to wind the metal strip material utilizing a circular coil eye when the friction is different in the individual cylinders, the invention provides that each cylinder (116) of the plurality is controlled individually.
摘要:
Coiler for wire and metal bars, of the mandrel type with vertical axis involving a base flange (4) for the support of the coil base and mandrel sectors (6) hinged at the base (41), which are able to be moved on the upper part by a coiler cylindrical shape with a collapsed conical shape of spool extraction and corresponding upper flange sectors (7) hinged on the upper part (10), moveable in concomitance of said mandrel sectors, respectively from a horizontal radial position to a position rotated upwards to allow the extraction of the coil and vice-versa, including a coaxial device (2), able to be moved longitudinally along the axis of the mandrel, and equipped with lever-operated means (21, 60, 61, 62) and rack means (22, 10, 71 ) of movement of said mandrel sectors (6) and flange sectors (7) so that: when said coaxial device (2) is lowered: said levers (61) are directed upwards and withdraw said mandrel sectors (6), while said rack (22) rotates said flange sectors (7) upwards; when said coaxial device (2) is lifted: said levers (61 ) are carried substantially radially and push said mandrel sectors (6) outwards, while said rack (22) rotates said flange sectors (7) downwards, namely substantially horizontally.
摘要:
Winding plant for rolled-stock of the type involving, downstream of a rolling-mill plant, movable wire-entry guide means (4c) mounted on two interdependent movements (43), the plant including in the winding area two series of opposite rolls (422), movable by means of rotary arms (421-420) and a dynamic-fluid movement system (4212) in order to carry said opposite movable rolls (422) from an upward rotated position in sending-away, to a position against the formed coil (B) in said reel (AV), said rolls (422) being mounted on opposite parallelogram articulation (4222) on a roller-carrier (4220) with elastically pressing means (4221) against said coil (B) when said wire-guide means (4C) are withdrawn to move away from said reel (AV).
摘要:
Coiling method and device ('R') for a long product (10). The device ('R') comprises a mandrel (12) with a substantially cylindrical shape and rotating around its own axis, and a containing element (13) coaxial with the mandrel (12), rotating together therewith and defining a front wall (32) to contain the coil of product (10) to be formed. The containing element (13) comprises an annular channel (14) to clamp the leading end of the product (10) around the mandrel (12). The containing element (13) is mobile axially with respect to the mandrel (12) between a first position wherein the leading end of the product (10) is inserted, and a second position wherein the coil of product (10) is completed.
摘要:
Coiling device (10) and relative coiling method for rolled or drawn long products, comprising a mandrel (11), arranged cantilevered and rotatable with respect to a central longitudinal axis (X), and on which the long products are wound in adjacent and superimposed spirals (33), in order to form a compact coil (31) having the geometric shape of a circular ring with lateral flanks substantially orthogonal, or very angled, with respect to the central longitudinal axis (X). The mandrel (11) comprises a flange (12) substantially orthogonal, or very angled, with respect to the central longitudinal axis (X) which defines a first lateral flank of the coil (31). The mandrel (11) also comprises first arm elements (13) which define the cylindrical surface of the core that forms the coil (31), and second arm elements (14), opposite the flange (12), which define a second flank of the coil. The first and the second arm elements (13, 14) are mobile between a first coil-forming position and a second coil-removal position.
摘要:
Winding plant for rolled-stock of the type comprising, downstream from a rolling-mill plant: flying cutting means; wire-guide means (3); two winding-machines (4) for the formation of coils; coil transfers means (5); wherein said exterior flange of said reel (AV) is made up of flange sectors (411), hinged to said reel by means of leverism (4111) to be rotated like the petals of a flower: from an open flower position, namely substantially radially orthogonal to the rotation axis of said reel (AV) to form substantially a closed reel for the winding of the rolled-stock to form the said coil (B), to a closed flower position, namely rotated outwards within a diameter lower than the interior diameter of said coil (B) to allow its extraction.
摘要:
The invention is particularly directed to the problem of creep deformation in a coiled aluminium strip, which occurs during coiling and for a period thereafter. the problem arises because the profile of the strip across its width is not flat, and is in fact usually thicker in the middle than at the edges (positive crown). To cater for this, the invention provides that the spool (1) onto which the coil is wound is adapted to provide more support to the strip in the centre than at the edges. Various ways of achieving this are described; one example, as illustrated, is to make the central portion (2) of the spool (1) of greater diameter than the end portions (3) of the spool. A strip having a positive crown which is wound onto such a spool was found to exhibit significantly reduced creep strain, leading to reduced creep deformation.
摘要:
The invention relates to a device (12) for winding up and unwinding metal strips (N), used in particular for cold-rolling. This device has a spindle (21) which is mounted inside a hollow shaft (31) and onto which the strip (N) is wound; for this purpose the spindle (21) is rotated by a motor (20) which actuates the hollow shaft (31) by means of a mechanical transmission (27-30). In accordance with a preferred embodiment, the position of the hollow shaft (31) along the axis of rotation may be adjusted by means of hydraulic actuators (46, 47), in such a way as to compensate for any winding defects in the coil present on the spindle.