EP3792022A1 - Vorrichtung zum aufschneiden von spulen von gewickeltem material - Google Patents

Vorrichtung zum aufschneiden von spulen von gewickeltem material Download PDF

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Publication number
EP3792022A1
EP3792022A1 EP19197403.9A EP19197403A EP3792022A1 EP 3792022 A1 EP3792022 A1 EP 3792022A1 EP 19197403 A EP19197403 A EP 19197403A EP 3792022 A1 EP3792022 A1 EP 3792022A1
Authority
EP
European Patent Office
Prior art keywords
spool
translation
axis
circular blade
blade
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.)
Withdrawn
Application number
EP19197403.9A
Other languages
English (en)
French (fr)
Inventor
Paolo Carlo MAGNAGHI
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.)
Deco Srl
Original Assignee
Deco Srl
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 Deco Srl filed Critical Deco Srl
Priority to EP19197403.9A priority Critical patent/EP3792022A1/de
Publication of EP3792022A1 publication Critical patent/EP3792022A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/001—Cutting tubes longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/16—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable arm or the like
    • B26D1/165—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable arm or the like for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/18—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage
    • B26D1/185—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/06—Means for moving the cutting member into its operative position for cutting by electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/105—Opening of web rolls; Removing damaged outer layers; Detecting the leading end of a closed web roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D2007/013—Means for holding or positioning work the work being tubes, rods or logs

Definitions

  • the present invention refers to an apparatus for the opening of spools of wound material.
  • an apparatus for the opening of waste spools in the field of plastic material regeneration is provided.
  • thermoplastic materials characterised by a high ultimate tensile strength and by good heat and wear resistance.
  • polypropylene (PP) on its own or bonded in compounds, gives the opportunity to be used in the most diverse applications, both in a rough form (powder, granules, ground matter, ...) and in the form of semi-finished products (typically films, yarns, non-woven fabric and the like).
  • PP polypropylene
  • polypropylene like various other thermoplastic materials, is ideally suited to be recycled or in any case processed again, for example in all those cases in which it comes out of the production line in a defective state.
  • a manufacturing area in which a certain incidence of waste occurs is precisely that of the manufacturing of semi-finished products of thermoplastic material, typically in the form of films or yarns or non-woven fabrics.
  • spools As known, semi-finished products in the form of films, yarns and non-woven fabrics are manufactured with suitable continuous matrixes and wound on spools, which are then sold to final users.
  • the spools hence consist of a hollow supporting core, of various materials (cardboard, plastic, metal, ...), whereon hundreds of metres of film or yarn or non-woven fabric are wound.
  • the semi-finished products which are wound are usually materials which have a much greater length and width compared to the thickness thereof and are hence sensitive to longitudinal tension variations, thus determining manufacturing faults if they are not suitably controlled.
  • spool quality is strongly determined by the winding process and by the disturbances which occur on the production line. Misalignment problems further exist of the material winding which, beyond a certain tolerance limit, represent faults to be rejected.
  • radial forces may occur within the spool (for example tensioning mistakes during winding) such as to cause the inner core to collapse and buckle whereon the material is wound, which then makes the spool non-usable on the machines of the subsequent processing.
  • the spool In order to recover the plastic material, the spool must be disassembled to recover, on the one hand, the plastic material in manageable batches and, on the other, the inner core which is incompatible with the recycling process.
  • spool-cutting machines are hence employed, which have the double task of reducing the size of the material on the spool, in order to ease the subsequent work by grinders or other machinery with different processing purposes, as well as of separating the inner tubular core.
  • guillotine-like spool-cutting machines has by now become common practice for years, that is machines generally consisting of a support arc whereon a suitable hydraulic guillotine is vertically slidably mounted.
  • the high pressure of the guillotine applied to the spool produces stresses which end up deforming or breaking the core, which can no longer be reused.
  • thermoplastic material in order to be able to process spools of thermoplastic material, a sturdy structure is needed which, moreover, must be sized to the maximum diameter of the spools to be treated, both in terms of resistance and of power. Such machines are therefore often oversized and operate with high energy consumption.
  • the movement speed of the guillotine is very low and the entire process is characterised by long times (for example, about ten spools per hour).
  • Process automation is also very low because, due to the high pressure imparted by the guillotine, the spool rests on a fixed, solid abutment plane and it is not conceivable to obtain automatic transport lines.
  • the option of using a classical miter saw with rotary cutting blade has proven not to be effective in cutting thermoplastic materials, especially if they are films or yarns or bobbin-wound, non-woven fabric, because the blade overheats and the saw teeth quickly tend to be clogged with the melted thermoplastic material, thereby making the cut fully ineffective.
  • a toothed saws inevitably leads to the formation of shavings and powders.
  • GB2046147 discloses a cutting system of spool tying bands, which makes use of a rotary blade.
  • WO00/62981 discloses an apparatus for the opening of paper spools, wherein a rotary blade is caused to run longitudinally for cutting the material wound on a spool.
  • This machine is conceptually applicable to any spool, but it has proven unsuited to the cutting of plastic film. It furthermore provides to handle the spools using gripping arms at the two ends, which act on the spool core, which makes the support frame complex and bulky, because it requires sturdy movement rails for raising and transferring the spool.
  • the object of the present invention is therefore to supply a system which solves the above-cited problems, providing a simple and lightweight machine, easily automatable within a working process.
  • a spool-cutting apparatus 1 comprises a very simple support frame, for example consisting of two parallel arc-shaped elements 4, 5 or a semi-arc shaped elelements(as illustrated in fig. 7 ) which support a central beam 6 arranged according to a longitudinal axis in the upper part of the apparatus.
  • Central beam 6 is provided with a linear guide, or with a toothed rack, for the horizontal translation of a moving operating unit 7.
  • Said moving operating unit 7 comprises a translatable trolley 14 whereon an electric motor 8 is installed, which brings a circular blade 9 in rotation, resting on a respective frame, consisting for example of two brackets 10, 11.
  • the rotation motion between motor 8 and circular blade 9 is transferred through a suitable transmission assembly, for example a gear reducer.
  • circular blade 9 has a smooth, cutting perimeter edge, that is devoid of teeth, preferably with a substantially triangular cross section.
  • the triangular-section cutting edge of the blade has a vertex angle which is large with respect to the lying plane of the blade, typically exceeding 60°.
  • the height of the bevelled profile which defines the cutting edge ranges between 10 mm and 20 mm, preferably 15 mm.
  • the cutting edge at the vertex of the blade is further bevelled with a smaller angle with respect to the remaining portion of the cutting edge closest to the rotation axis of the blade.
  • a blade sharpening device 19 is provided - equipped with an abrasive element known per se to a blade technician - arranged so that there may be a mutual coming closer between sharpener 19 and blade cutting edge when necessary and required.
  • advantageously sharpening device 19 is mounted in a fixed position at a front end of the machine (as visible in fig. 7 ): when the need to proceed to sharpening is detected, the blade is brought into contact with the sharpener (19), in a way described further on, and is sharpened with a relative rotary movement.
  • Trolley 14 is mounted translatable according to a horizontal movement axis, by means of a suitable actuator controlled by an operator control unit (not shown). Moreover, at least circular blade 9, with the relative transmission assembly and motor 8, are mounted translatable along a second vertical axis with respect to trolley 14, for example driven by means of a vertical movement actuator 12.
  • a bellow cuff 15 is preferably provided 15.
  • Central beam 6, onto which trolley 14 is meant to translate, is of such a size that the length thereof is greater than the length of any type of spool meant to be processed by the apparatus.
  • Operating unit 7 is hence conceived to drive into rotation a circular blade with smooth cutting edge 9, furthermore causing it to slide along the two axes X (longitudinal horizontal axis) and Z (vertical axis).
  • the horizontal translation and the vertical translation of circular blade 9 are achieved with a suitable system of pneumatic or hydraulic actuators or of electric motors, which are not described in detail because they are within the reach of a person skilled in the field of movement axes.
  • stationing base 2 of a spool 3 to be engraved and opened is arranged below longitudinal support beam 6 .
  • stationing base 2 is in the form of a V-shaped holding seat, for example integral with frame arches 4 and 5, provided with a series of conveying rollers or with a pair of conveyor belts (not shown), known per se, connected to a similar adduction transport line, along which waste spools arrive which travel according to the longitudinal axis thereof and are hence automatically conveyed to the opening station.
  • spools 3 can be moved away from the processing station either unloading them laterally, for example by means of a forklift, or conveying them longitudinally with another removal conveying line.
  • the assembly comprising motor and blade is kept inoperative for the entire step of moving spool 3 in the proximity of the processing station.
  • spool-cutting machine 1 is kept in an idle condition with operating unit 7 kept at the highest allowed height.
  • spool-cutting machine 1 is started and operating unit 7, through the system of motors and actuators, is caused to descend to an established height at a travel end of the sliding guide located below central beam 6. At this point, said rotary blade 9 is ready to perform the engraving on spool 3.
  • a fourth step operating unit 7 if furthermore caused to descend to a second established height, before going back to the first travel end, thus applying a second engraving on the material of spool 3 with a cutting depth equal or different with respect to the engraving depth performed upon the first passage.
  • a spool height detector is provided for the spool located on stationing base 2: through the geometric configuration of base 2, it is thus possible to determine the diameter of the spool and hence establish the travel along vertical axis Z which the blade must overall accomplish. Thereby operating unit 7 is able to perform a clear cut separation of the plastic winding from the spool core.
  • a series of bands of material 16 is obtained to be laid upon each other and arranged at the two sides of the core.
  • Operating unit 7, at this point, will go to the end of the linear guide and will be lifted into a home position, in order to free the area to allow the removal of the bands of polymer 16 from the holding seat of base 2.
  • the conveyor will provide to correctly position another spool to be processed in a central position of the operating area of spool-cutting machine 1.
  • operating unit 7 moves towards the front end of the machine, to bring the blade into engagement with sharpening device 19 and perform the sharpening of the blade.
  • operating unit 7 furthermore comprises an additional equipment in the shape of an expansion wedge 18, mounted on a bracket installed integral with the support of circular blade 9.
  • wedge element 18 is arranged with a vertex radially facing the spool centre.
  • the two opposite wedge elements 18 are movably mounted, so that they are apt to be lifted simultaneously or alternatively when they must not operate in the engraving of the material.
  • This apparatus comprises a basement B, for example obtained from a metal sheet, suitable to be rested onto any work bench 32, whereon a fixed operating unit 20 is installed, meant for the cutting of spools, for example spools with a diameter ranging between 100 and 200 mm.
  • a system of linear sliding rails 21, 22 is furthermore provided - arranged to the side of operating unit 20 and parallel to a cutting axis - whereon a carriage 23 is slidably mounted.
  • Said carriage 23 is provided with a small spool-carrying shaft 24 and with an ergonomic handle 25 to allow an operator to impart a manual translation action on carriage 23 along rails 21 and 22.
  • Spool-carrying shaft 24 is apt to support a small spool BO, such as a spool of thermoplastic yarn, in correspondence of said cutting line.
  • spool-carrying shaft 24 is adjustable in position transversally to the cutting line, to determine the opening position of the spool with respect to the core axis thereof.
  • Operating unit 20 comprises a support frame whereon a motorisation assembly 27 of a circular blade 28 provided with a smooth cutting edge is translatably mounted according to a vertical axis, with the features seen above in connection with the first embodiment.
  • the plane of the circular blade 28 is arranged on said cutting line.
  • the support frame with the relative movement actuator of motorisation assembly 27 are included in a shielding casing 29.
  • Operating unit 20 is furthermore provided with a suitable blade shield 30, preferably provided with a fixed upper portion and a pivoting lower portion, which is displaced upon contact with the spool to be cut.
  • a blade sharpener is preferably also installed, which is apt to be moved relatively closer to the blade when desired.
  • the operating area next to blade 28 is also equipped with an accident prevention cover 31, for example a front protection shield made of Plexiglass for tool machines.
  • an operating unit provided with a circular blade with a smooth cutting edge, mounted so as to determine a relative movement with respect to the spool to be opened according to two translation axes, a first axis X of horizontal movement (carriage 23 which moves with respect to the fixed cutting assembly) and a second axis Z of vertical movement (the motor assembly which is mounted vertically adjustable with respect to base plate B).
  • spools are small and lightweight, they can be manually loaded onto spool-carrier 24; moreover a configuration is preferable wherein spool BO is displaced onto carriage 23, while blade 28 is fixed and simply adjustable in a vertical direction, since it is meant to open the spool in a single run (even though that is not to be understood in a limiting manner).
  • carriage 23 may be motorised to cause it to move automatically on the horizontal translation axis.
  • Operating unit 20 is adjusted at a suitable height based on the type of spool. Motor 27 is then switched on to start the rotation of blade 28. Carriage 23 is pushed by the operator using handle 25, causing it to slide on rails 21,22 from left to right or vice versa (in the drawings of the attached figures), until bringing the spool into engagement with blade 28 ( figs. 10C e 10D ).
  • spool BO is engraved, by means of blade 28, with a single run. Hence, once the cut has been performed, the operator can remove from spool-carrying shaft 24 the side bands of plastic yarn obtained at the end of the cut ( figs. 10E-10F ).
  • the spool core, of plastic or cardboard, remains on spool-carrier 24 and will be manually removed later.
  • a rotary circular blade with a smooth cutting edge allows to perform a more progressive engraving of the material, avoiding sudden reactions, projection of pieces of material and jamming of the blade with the plastic material.
  • the stresses generated during the opening of the spool are determinable regardless of the spool size, so that the sizing (in terms of sturdiness and employed power) of the machine is not affected by the maximum size of the spool to be processed.
  • the spool opening speed is markedly higher than what occurs in conventional spool-cutting machines.
  • the very reduced pressure imparted vertically allows to use a roller conveyor or a tape conveyor in correspondence of the spool stationing base; therefore, providing also the sharpening device onboard the machine, it is possible to obtain a greater automation which results into a synergistic acceleration of the spool handling operations.
  • thermoplastic material for example, although the description refers exclusively to spools of thermoplastic material, it is not ruled out that the same system of the invention may subsequently be used also with spools of a different nature.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
EP19197403.9A 2019-09-13 2019-09-13 Vorrichtung zum aufschneiden von spulen von gewickeltem material Withdrawn EP3792022A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19197403.9A EP3792022A1 (de) 2019-09-13 2019-09-13 Vorrichtung zum aufschneiden von spulen von gewickeltem material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19197403.9A EP3792022A1 (de) 2019-09-13 2019-09-13 Vorrichtung zum aufschneiden von spulen von gewickeltem material

Publications (1)

Publication Number Publication Date
EP3792022A1 true EP3792022A1 (de) 2021-03-17

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EP19197403.9A Withdrawn EP3792022A1 (de) 2019-09-13 2019-09-13 Vorrichtung zum aufschneiden von spulen von gewickeltem material

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114227770A (zh) * 2021-12-01 2022-03-25 中材锂膜有限公司 一种用于锂电池隔膜废膜的可移动切割装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046147A (en) 1979-03-30 1980-11-12 Loewy Robertson Eng Co Ltd Coil Band Severing and Disposal Apparatus
WO2000062981A1 (en) * 1999-04-19 2000-10-26 Core Link Ab Device for emptying

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046147A (en) 1979-03-30 1980-11-12 Loewy Robertson Eng Co Ltd Coil Band Severing and Disposal Apparatus
WO2000062981A1 (en) * 1999-04-19 2000-10-26 Core Link Ab Device for emptying

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114227770A (zh) * 2021-12-01 2022-03-25 中材锂膜有限公司 一种用于锂电池隔膜废膜的可移动切割装置
CN114227770B (zh) * 2021-12-01 2024-01-19 中材锂膜有限公司 一种用于锂电池隔膜废膜的可移动切割装置

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