EP1234789A2 - Process and machine for winding thermoplastic film in bobbins of chosen size - Google Patents

Process and machine for winding thermoplastic film in bobbins of chosen size Download PDF

Info

Publication number
EP1234789A2
EP1234789A2 EP02003229A EP02003229A EP1234789A2 EP 1234789 A2 EP1234789 A2 EP 1234789A2 EP 02003229 A EP02003229 A EP 02003229A EP 02003229 A EP02003229 A EP 02003229A EP 1234789 A2 EP1234789 A2 EP 1234789A2
Authority
EP
European Patent Office
Prior art keywords
spindle
bobbin
assembly
carriage
cardboard
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Withdrawn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
EP02003229A
Other languages
German (de)
English (en)
French (fr)
Inventor
Guiseppe Dario Brambilla
Marco Maria Bombonato
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.)
Manuli Stretch SpA
Original Assignee
Manuli Stretch SpA
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 Manuli Stretch SpA filed Critical Manuli Stretch SpA
Publication of EP1234789A2 publication Critical patent/EP1234789A2/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/30—Lifting, transporting, or removing the web roll; Inserting core
    • B65H19/305—Inserting core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/02—Supporting web roll
    • B65H18/04—Interior-supporting
    • 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
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2292—Removing cores or mandrels from web roll after winding
    • 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
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B65H19/283—Attaching the leading end of the web to the replacement web-roll core or spindle by applying adhesive to the core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/418—Changing web roll
    • B65H2301/4181—Core or mandrel supply
    • B65H2301/41814—Core or mandrel supply by container storing cores and feeding through wedge-shaped slot or elongated channel

Definitions

  • the present invention relates to a process and a machine for continuously winding, with an automatic cycle, thermoplastic film so as to obtain bobbins of a chosen size and length directly in line with the film production apparatus or starting from large bobbins.
  • thermoplastic films obtained by cast-extrusion were collected on winding rollers so as to obtain large bobbins from which bobbins of the chosen size were prepared by rewinding.
  • the rewinding step was performed discontinuously, since the unloading of the already-wound bobbin and the subsequent loading of a new tubular core (cardboard element) for winding required interrupting the operation.
  • Rewinding machines of the above mentioned type can be used so as to work directly in line with the apparatus for producing the film, which is conveniently cut into bands of the chosen width, using a rewinding machine for each band.
  • the need is felt in the field to have a process and a machine capable of performing continuously and with an automatic cycle the winding of a thermoplastic film directly in line with the production of the film or starting from large bobbins so as to obtain smaller bobbins.
  • the process according to the invention comprises the following steps starting from the already-wound bobbin :
  • the cycle can be applied to the simultaneous winding of a series of bobbins (generally three) directly in line with the production apparatus; in this case, the steps for winding the various bobbins are staggered, so as to allow the completion of the cycle for each bobbin before a new one begins.
  • the cardboard cores that can be used generally have a diameter of 38, 50 and 76 mm; their width is generally between 400 and 530 mm.
  • the process according to the invention in addition to allowing the production of small-size bobbins manufactured continuously and with an automatic cycle, allows to exclude any contact of operators with the winding roller and the bobbins during winding, thus reducing the risk of accidents.
  • thermoplastic film any kind of thermoplastic film can be used; in particular, the polyethylene multilayer stretch film used for the packaging of palletized units is wound.
  • Figures 1 to 3 are respectively a lateral elevation view of the machine (Figure 1), a plan view ( Figure 2), and a side view taken along Y ( Figure 3).
  • the connecting rod 1 supports the spindle 2 on which the bobbin 3 being wound in contact with the roller 4 is fitted.
  • the connecting rod 1 After cutting the film, reaches a vertical position.
  • the spindle 2 is braked and locked in its rotary motion by actuating two pneumatic pistons and is disengaged from the connecting rod 1 by opening two other pairs of pneumatic pistons (not shown in the figure).
  • the carriage 5 (moved by motors as shown in the figure and provided with a horizontal translational motion by sliding on the guide 10 and a vertical motion on the guide 6) is in the standby position below the bobbin 3 when the connecting rod 1 reaches the vertical position and rises, sliding on the guide 6 until the bobbin 3 is placed on the cradle 7 rigidly coupled to the carriage 5.
  • a series of optical sensors (not shown in the figure), arranged below the cradle 7, indicate the presence of the bobbin 3 in the cradle, thus providing the confirmation for moving on to the next step (the reference positions for the movements along the vertical guide 6 are confirmed by the presence of microswitches 8, shown in Figure 3).
  • the carriage 5 performs a further upward translational motion, lifting the spindle-bobbin assembly 2-3, releasing it from the linkage 1, which can thus return to the working position and receive a new cardboard core-spindle assembly so as to start a new winding step.
  • the deflation unit 9 ( Figure 3), arranged on the horizontal guide 10 in axial alignment with the spindle 2, is activated and discharges air from the spindle 2 by acting on the deflation valve.
  • the reference positions for the movements along the horizontal guide 10 are determined by microswitches 12, shown in Figure 2.
  • the carriage 5 engages the microswitch, which provides the clearance signal for the actuation of the connecting rod assembly 13 for supporting the spindle 2.
  • the connecting rod assembly 13 is meant to support the spindle 2 when the bobbin 3, drawn by the cradle 7, is extracted fully from said spindle, which would otherwise be supported only by the support 11.
  • the bobbin 3 is unloaded from the cradle 7; the optical sensors connected to the cradle, once illuminated, provide the clearance signal for the fall of the cardboard cores onto said cradle.
  • the fall of the cardboard cores and the supply of new cardboard cores on the loading assembly 14 are performed by means of pneumatic pistons (not shown).
  • the cradle 7, with the new cardboard cores, moves upward with the carriage 5 so as to align the axis of the cardboard cores with the axis of the spindle 2.
  • said cardboard cores are sprayed with a film of adhesive by a gun that is provided and positioned appropriately for this purpose (the film of glue is meant to make the film adhere to the cardboard core for the winding step).
  • the linkage assembly 13 During the step for fitting the cardboard cores on the spindle 2, the linkage assembly 13 returns to the position that preceded its opening in order to support the spindle 2 in the step for extracting the bobbin 3, thus allowing the regular passage of the carriage 5.
  • the carriage 5 is actuated upward until it moves beyond the spindle loading assembly 15 and its position is reported by a microswitch.
  • the arm 16 provided on the loading assembly 15 with the function of supporting the spindle 2 opens; the subsequent descent of the carriage 5 until it returns to the position it had at the beginning of the cycle allows the spindle 2 to be deposited onto the supporting arm 16.
  • the spindle loader 15 is slightly inclined with respect to the winding unit, the spindle 2 can slide toward the inflator assembly 17.
  • the spindle 2 After performing inflation, the spindle 2 continues its descent until it reaches the chain 18.
  • the chain 18 carries the spindle 2 so that it rests on the winding roller; a new step thus begins.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Winding Of Webs (AREA)
EP02003229A 2001-02-27 2002-02-20 Process and machine for winding thermoplastic film in bobbins of chosen size Withdrawn EP1234789A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001MI000389A ITMI20010389A1 (it) 2001-02-27 2001-02-27 Procedimento e macchina per l'avvolgimento di film termoplastico in bobine di dimensioni volute
ITMI010389 2001-02-27

Publications (1)

Publication Number Publication Date
EP1234789A2 true EP1234789A2 (en) 2002-08-28

Family

ID=11447022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02003229A Withdrawn EP1234789A2 (en) 2001-02-27 2002-02-20 Process and machine for winding thermoplastic film in bobbins of chosen size

Country Status (3)

Country Link
US (1) US20020117577A1 (it)
EP (1) EP1234789A2 (it)
IT (1) ITMI20010389A1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1571109A1 (en) * 2004-03-01 2005-09-07 Andritz Tissue Inc. Reel spool storage and loading device and method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102485624A (zh) * 2011-11-29 2012-06-06 江苏汉高德瑞实业有限公司 成品布卷卷轴抽出装置
CN109368340B (zh) * 2018-11-28 2024-02-23 苏州市星京泽纤维科技有限公司 一种涡流纺织机的收卷装置
CN110683388B (zh) * 2019-11-19 2024-08-06 邵阳市祥佳塑胶科技有限公司 一种封缄胶带生产用上料机
CN116588725B (zh) * 2023-03-18 2024-07-12 广东三辉无纺机械有限公司 一种摩擦式收卷机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1571109A1 (en) * 2004-03-01 2005-09-07 Andritz Tissue Inc. Reel spool storage and loading device and method
US7255301B2 (en) 2004-03-01 2007-08-14 Andritz Tissue Inc. Reel spool storage and loading device and method

Also Published As

Publication number Publication date
ITMI20010389A1 (it) 2002-08-27
US20020117577A1 (en) 2002-08-29

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