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EP-4190965-B1 - ROLLER IRONING PRESS

EP4190965B1EP 4190965 B1EP4190965 B1EP 4190965B1EP-4190965-B1

Inventors

  • BERTI, FILIPPO ANDREA
  • BULF, UMBERTO

Dates

Publication Date
20260506
Application Date
20221121

Claims (13)

  1. A roller ironing press (10, 110) comprising: - two supporting shoulders (11a, 11b, 111a, 111b), respectively a first shoulder (11a, 111a) and a second shoulder (11b, 111b), - a motorized roller (12, 112) arranged between said first shoulder (11a, 111a) and said second shoulder (11b, 111b), - one or more presser means (13, 113) arranged between said first shoulder (11a, 111a) and said second shoulder (11b, 111b), said motorized roller (12, 112) cooperating with said one or more presser means (13, 113), said one or more presser means (13, 113) being heated and shaped complementarily to said roller (12, 112), - means (14) for moving said one or more presser means (13, 113) toward said roller (12, 112), said means (14) for moving said one or more presser means (13, 113) toward said roller (12, 112) comprising a plurality of pulleys (22a, 22b, 122a, 122b, 30, 130, 31, 131, 32, 132, 33, 133, 35, 135, 36, 37) and at least one cable (19) which extends between a said plurality of pulleys (22a, 22b, 122a, 122b, 30, 130, 31, 131, 32, 132, 33, 133, 35, 135, 36, 37), said means (14) for moving said one or more presser means (13, 113) toward said roller (12, 112) further comprising drive means (23), transmission means, an electric motor and a gear reduction, said cable (19) being moved by said drive means (23) which are kinematically connected to at least one of the ends of said cable (19), and characterized in that : said roller (12, 112) is moved by the transmission unit actuated by the electric motor (15) arranged adjacent to one of said supporting shoulders (11a, 111b), said electric motor (15) being kinematically connected to the gear reduction unit (50) on the output shaft of which a first pinion (16, 116) is keyed, said first pinion (16, 116) being kinematically connected, by way of a first chain (18), to a second pinion (17, 117), said second pinion (17, 117) being coaxial to said roller (12, 112) and being fixed to one end thereof.
  2. The roller ironing press (10) according to claim 1, characterized in that said one or more presser means (13) is configured to translate along a radial direction with respect to said roller (12), said one or more presser means (13) having, at their longitudinal ends, prism-like tabs (20a, 20b) which are configured to slide in guides (21a, 21b) defined by slotted holes which are present inside a respective one of said supporting shoulders (11a, 11b), a first pulley (22a, 22b) being keyed on each of said prism-like tabs (20a, 20b) and said cable (19) being configured to slide around a first said first pulley (22a) and a second said first pulley (22b).
  3. The roller ironing press (10) according to claim 2, characterized in that said first pulley (22a, 22b) has a rotation axis which is parallel to and/or coincident with the axis of longitudinal extension of said one or more presser means (13) and is arranged at the end of the corresponding one of said prism-like tabs (20a, 20b) that is opposite with respect to said one or more presser means (13) and is directed toward the outside of said ironing press (10).
  4. The roller ironing press (10, 110) according to one or more of the preceding claims 2 and 3, characterized in that said drive means (23) comprise a gear motor (24, 124) which is fixed to said first shoulder (11a, 111a) on the output shaft of which a third pinion (25, 125) is keyed, said third pinion (25, 125) being kinematically connected by way of a second chain (26) to a fourth pinion (27, 127), said fourth pinion (27, 127) having a first pivot (28) with an axis of extension that is parallel to the rotation axis of said fourth pinion (27, 127), said cable (19) being fixed to said first pivot (28) by way of a first thimble (29) at a first end of the latter.
  5. The roller ironing press (10) according to claim 4, characterized in that said fourth pinion (27) is coaxial to said first pinion (16) and is keyed on the same shaft as the latter, said fourth pinion (27) being idle with respect to said first pinion (16).
  6. The roller ironing press (10, 110) according to one or more of the preceding claims 4 and 5, characterized in that said fourth pinion (27, 127) has a second pulley (30, 130) which is coaxial thereto and integral therewith.
  7. The roller ironing press (10) according to claim 6, characterized in that it comprises a plurality of pulleys for guiding said cable (19), starting from said second pulley (30) said cable (19) interacting along its path, in the following order, with: - a third pulley (31), which is idle and is fixed to said first shoulder (11a) and has a fixed rotation axis parallel to the rotation axis of said second pulley (30), - said first first pulley (22a), which is idle and configured to slide on said first shoulder (11a) and has a rotation axis parallel to the rotation axis of said second pulley (30), and which is configured to translate along the respective guide (21a), - a fourth pulley (32), which is idle and is fixed to said first shoulder (11a) and has a fixed rotation axis parallel to the rotation axis of said second pulley (30), and which is arranged above said third pulley (31), - a fifth pulley (33), which is idle and is arranged proximate to a through hole (34) of said first shoulder (11a) and is fixed to the latter, said fifth pulley (33) having a fixed rotation axis parallel to the plane of arrangement of said second pulley (30), said fifth pulley (33) being arranged below said third pulley (31), - a sixth pulley (35), which is idle and is arranged proximate to a through hole (36) of said second shoulder (11b) and is fixed to the latter, said sixth pulley (35) having a fixed rotation axis parallel to the plane of arrangement of said second pulley (30), said sixth pulley (35) being arranged substantially at said fifth pulley (33), - a seventh pulley (37), which is idle and is fixed to said second shoulder (11b), with a fixed rotation axis parallel to the rotation axis of said second pulley (30), said seventh pulley (37) being arranged above said sixth pulley (35), - said second first pulley (22b), which is idle and configured to slide on said second shoulder (11b) and has a rotation axis parallel to the rotation axis of said second pulley (30), and which is configured to translate along the respective guide (21b), said rotation axis of said second first pulley (22b) being arranged on a plane which is lower than or substantially coincident with the plane of arrangement of the rotation axis of said seventh pulley (37), said cable (19) being fixed by way of a second thimble (39) at a second end thereof to said second shoulder (11b).
  8. The roller ironing press (10, 110) according to one or more of the preceding claims, characterized in that it comprises return means (40, 160) affecting said one or more presser means (13, 113).
  9. The roller ironing press (10) according to one or more of the preceding claims, characterized in that said return means (40) affecting said one or more presser means (13) are constituted by helical springs (41), each one with an axis of extension parallel to the axis of extension of said guides (21a, 21) and each one being fixed: - at a first, fixed end, inside a respective one of said shoulders (11a, 11b), - at a second, moveable end, to a respective one of said prism-like tabs (20a, 20b) of said one or more presser means (13), said springs (41) having: - an inactive configuration, with said one or more presser means (13) at the maximum distance from said roller (12), - an elongated configuration, with said one or more presser means (13) substantially in contact with said roller (12).
  10. The roller ironing press (110) according to claim 8, characterized in that said one or more presser means (113) is configured to translate along a radial direction with respect to said roller (112) as a result of the action of a group of lever systems (120), said group of lever systems (120) having, at its ends, two opposite and parallel first pulleys (122a, 122b), respectively a first first pulley (122a) and a second first pulley (122b), said first pulleys (122a, 122b) having a rotation axis parallel to and/or coincident with the longitudinal axis of extension of said one or more presser means (113).
  11. The roller ironing press (110) according to claim 10, characterized in that said group of lever systems (120) has two or more arms (121a, 121b), each one of said arms (121a, 121b) being fixed: - at a first end, to a respective one of said first pulleys (122a, 122b), - at a second end, which is opposite from the first, to said one or more presser means (113), said first pulleys (122a, 122b) being arranged below said one or more presser means (113), each one of said arms (121a, 121b) being pivoted by way of a hinge (150), in a substantially central position, to a corresponding bracket (140a, 140b), respectively a first bracket (140a) and a second bracket (140b), said bracket (140a, 140b) extending below a beam (141), said beam (141) being arranged between said shoulders (111a, 111b) below said one or more presser means (113), a first crossmember (152) extending between said first bracket (140a) and said second bracket (140b) and being perpendicular to both.
  12. The roller ironing press (110) according to claim 11, characterized in that it comprises a plurality of pulleys for guiding said cable, starting from said second pulley (130) said cable interacting along its path, in the following order, with: - a third pulley (131), which is idle and is fixed to said first shoulder (111a) at a through hole (134) thereof with a fixed rotation axis lying on a plane that is parallel to the plane of arrangement of said second pulley (130), - a fourth pulley (132), which is idle and is fixed to said first crossmember (152), with a fixed rotation axis lying on a plane that is perpendicular to the plane of arrangement of said second pulley (130), - said first first pulley (122a), which is idle, moveable with respect to said first shoulder (111a), with a rotation axis parallel to the rotation axis of said second pulley (130), and which is configured to translate along a trajectory represented by a circular arc with the respective hinge (150) as its center, - a fifth pulley (133), which is idle and is fixed to said first crossmember (152), with a fixed rotation axis lying on a plane that is parallel to the plane of arrangement of said second pulley (130), said fifth pulley (133) being arranged below said fourth pulley (132) and substantially parallel thereto, - a sixth pulley (135), which is idle and is fixed to said first crossmember (152) and lying on the same plane of arrangement as said fifth pulley (133), - said second first pulley (122b), which is idle, coaxial to said first first pulley (122a) and moveable with respect to said second shoulder (111b), with a rotation axis parallel to the rotation axis of said second pulley (130), and which is configured to translate along a trajectory represented by a circular arc with the respective hinge (150) as its center, said cable being fixed at a second end thereof to said first crossmember (152) exiting from said second first pulley (122b).
  13. The roller ironing press (110) according to claim 12, characterized in that said return means (160) affecting said one or more presser means (113) are constituted by a plurality of helical springs (161), with an axis of extension lying on a plane parallel to the plane of arrangement of said first pulleys (122a, 122b), each one of said springs (161) being fixed: - at a first, fixed end, to a first crossmember (152) which extends between said first bracket (140a) and said second bracket (140b), perpendicular to both brackets (140a, 140b), - at a second, moveable end, to a second crossmember (153) which extends between said arms (121a, 121b), perpendicular to both, with an axis of extension coincident with the axis of extension of said hinge (150), said second crossmember (153) being: - parallel to said beam (141) and arranged below it, - parallel to said first crossmember (152) and arranged above it, said springs (161) having: - an inactive configuration, with said one or more presser means (113) at the maximum distance from said roller (112), - an elongated configuration, with said one or more presser means (113) substantially in contact with said roller (112).

Description

The present invention relates to a roller ironing press. Nowadays different types of ironing presses are known and widespread on the market. Among these are "roller ironing presses" which are normally used for the industrial ironing of linen of large dimensions. Such apparatuses comprise, between two shoulders of the structure, a motorized roller which usually has a soft surface for contact with the linen, over which the laundry is moved. On the roller a heated presser means is pushed, at least partially shaped complementarily thereto, called an "ironing basin". During operation the linen advances between the roller and the basin and, as the linen advances, the presser means is pressed against the roller in order to iron the linen that is placed between them. In order to enable movement of the presser toward and away from the roller, means for moving the latter are used. For example the roller ironing press is known, described in Italian patent no. 1268689 by this same applicant. In such ironing press, the roller is motorized by way of a transmission chain and a gear motor, and the presser means can translate along a radial direction with respect to the former, by virtue of end tabs that can slide in guides defined by slotted holes present on each shoulder of the structure. The guides are inclined with respect to the vertical, above the roller, and a downward-extending parallelepiped block is bolted onto each end tab of the presser means, a rod being articulated by way of a pivot to such block, such rod being internally provided with rack that meshes with a freewheel keyed on the axis of the roller. The end of a gas-filled cylinder, coupled to a respective shoulder, is articulated on the rod, at the end opposite to the freewheel, said gas-filled cylinder is adapted to push the rod downward and therefore push the presser means against the roller. The stroke of the rod to move the presser means away from the roller is, on the other hand, determined by the action of a microswitch positioned on one of the guide elements. Such apparatus has met with enormous success from the commercial point of view, but naturally with the passage of time, improvements will be sought. These improvements are aimed at improving aspects of this known art, and of other, similar conventional apparatuses, which display room for improvement. In particular, an aspect that shows room for improvement is the presence of components for moving the presser means, which are subject to wear over time. In fact elements such as rods, wheels, racks and gas-filled cylinders are subject to wear deriving from the friction that is normally generated between the various parts that interact during the normal use of the ironing press. Furthermore, similar apparatuses are complicated in construction and are not straightforward to produce owing to the complexity of the individual elements to be assembled together and of the positioning that these must have with respect to each other. Also, the presence of elements such as rods, wheels, racks and cylinders results in considerable manufacturing costs. DE 861 985 C discloses a device for ironing machines for generating the contact pressure for the ironing trough, comprising a slip clutch driven by the drive motor of the transport roller, via an intermediate gear, and the slipping clutch part forms the pressure medium used to press the ironing trough against the transport roller. DE 16 10 066 A1 discloses an ironing machine with an ironing roller and an ironing trough attached to the end of a swivel arm designed as a two-arm lever, which is pressed against the roller by a spring which acts on a stationary pivotable mountable lever, the lever length of which acting on the end of the swivel arm remotely from the trough being shorter when the trough is applied than when the trough is raised, and the lifting force acting on the swivel arm, in particular on its end remote from the trough. US 1 671 500 A disclose an ironing machine, comprising a shoe, a rotary roll, means for manually moving the shoe to and from the roll, a motor for operating the roll, and means operable by the motor for pressing said shoe against the roll, with said means being operative providing action to the operating force which rotates the roll. DE 311 372 C discloses a flattening machine with a flattening roller and a heatable trough arranged above the flattening roller and which can be lifted off from it. The trough is suspended eccentrically so that after being lifted off the flattening roller it assumes a position eccentric to the latter such that the material resting on the flattening roller becomes accessible, whereby a retaining hook prevents the trough from coming into direct contact with the roller. The aim of the present invention is to provide an ironing press that is capable of improving the known art in one or more of the above mentioned aspects. Within this aim, an object of the invention is to provide a roller ironing press tha