EP3676063A1 - A module of a machine with a die cutting function - Google Patents

A module of a machine with a die cutting function

Info

Publication number
EP3676063A1
EP3676063A1 EP18780257.4A EP18780257A EP3676063A1 EP 3676063 A1 EP3676063 A1 EP 3676063A1 EP 18780257 A EP18780257 A EP 18780257A EP 3676063 A1 EP3676063 A1 EP 3676063A1
Authority
EP
European Patent Office
Prior art keywords
module
cutting
clamping
cylinders
compensation
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.)
Pending
Application number
EP18780257.4A
Other languages
German (de)
French (fr)
Inventor
Tomasz SKROBIK
Mateusz KORKOSZ
Lukasz BAZYDLO
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.)
Bobst Firenze SRL
Original Assignee
Grafotronic Sp Z OO
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 Grafotronic Sp Z OO filed Critical Grafotronic Sp Z OO
Publication of EP3676063A1 publication Critical patent/EP3676063A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting
    • 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
    • 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
    • B26D7/02—Means for holding or positioning work with clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/384—Cutting-out; Stamping-out using rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/008—Apparatus or machines for carrying out printing operations combined with other operations with means for stamping or cutting out
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2607—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member for mounting die cutters

Definitions

  • the object of this invention is a module of a machine with a die cutting function, for cutting shapes in material fed on a web of backing sheet.
  • Such module comprises a rotary cutting cylinder with at least one cutting die positioned along at least a part of the perimeter of the cutting cylinder, two clamping counter-cylinders and a vertically movable compensation assembly comprising a compensation carriage along with a first compensation roll and a second compensation roll.
  • Cutting cutting out
  • the material (web) is rewound between a cutting cylinder with a forme/cutting die (most commonly this is a magnetic cylinder onto which steel cutting dies with magnetic properties are applied, being of a varied width), and a clamping counter-cylinder (also known as an anvil).
  • the maximum size of the shapes being cut depends on the diameter of the cutting cylinder.
  • the cutting cylinder is driven in a way to adjust its speed to the speed of material being rewound.
  • There are also semi-rotary cutting stations where the size of the cutting die may be variable. This solution enables cutting of a wider range of shape formats with the use of one magnetic cylinder. Then it is additionally necessary to ensure compensation of material rewinding.
  • a cutting or printing system comprising a cutting cylinder with two cutting dies and two clamping counter-cylinders.
  • Web with material for cutting or printing is rewound by a device at a constant speed, while the speed of the cutting cylinder changes dependently on whether it is in a phase in which cutting/printing is performed (i.e. the cutting die passes between the cutting cylinder and the clamping counter-cylinder), or in a phase intermediate between cutting/printing (the cutting die is in a position between the clamping counter-cylinders).
  • the travelling of the web is compensated by means of a compensation element, comprising a crosspiece and a pair of rollers, which element is displaced vertically in order to change the position of the web being wound on its rollers.
  • the object of this solution is to provide a device which would be more versatile and better suited to the currently applied speeds of rewinding of the web with material to be cut.
  • the present invention provides a module of a machine with a die cutting function, for cutting shapes from a material fed on a web, comprising a rotary cutting cylinder with at least one cutting die positioned along at least a part of the circumference of a cutting cylinder, two clamping counter-cylinders and a vertically movable compensation assembly comprising a compensation carriage along with a first compensation roller and a second compensation roller.
  • the invention also provides assemblies of clamping rollers for pressing the web against clamping counter-cylinders, and a clamping system for each of the clamping counter-cylinders.
  • the cutting cylinder is a magnetic cylinder.
  • the cutting cylinder is driven by an independent drive that is synchronized with the web being rewound during cutting, i.e. operating at a variable speed relative to the material being wound.
  • the module is provided with an automatic die mounting system and an automatic die removing system. Also preferably, a journal of each of the clamping counter-cylinders is fitted within individually bearing-seated rotatable rings. They provide clamping against the cutting cylinder.
  • the clamping system for each of the counter-cylinders comprises an eccentric mechanism and an eccentric actuator.
  • clamping counter-cylinders are driven synchronically.
  • the clamping roller assemblies are provided with a clamping mechanism to hold the web against the surface thereof. More preferably, the clamping mechanisms are actuators.
  • the first compensation roller is an auxiliary roller and the second compensation roller is a main roller.
  • the invention also relates to a machine with a die cutting function, provided with such a module.
  • fig. la shows a module according to the invention in a general perspective view, with a housing thereon
  • fig. lb shows a module according to the invention in a general perspective view, with a housing removed
  • fig. 2 shows a construction scheme of a part with a cutting mechanism of a module according to the invention, with a housing removed
  • fig. 3 shows a longitudinal cross-section through a clamping counter-cylinder
  • fig. 4 shows a possible configuration of a machine with a die cutting function, provided with a module according to the invention, in a general perspective view, with a housing removed
  • fig. 5 shows a side view of the machine of fig. 4 with a possible path of a web with a material for cutting.
  • a module M with a die cutting function is shown, of a machine with a cutting function, for cutting shapes out of a material fed on a web 13 of backing sheet.
  • the module may be a part of the machine with a die cutting function, e.g. with a configuration as shown in fig. 4 and fig. 5.
  • the module M comprises several rewinding rollers 16 of diverse kinds for the web 13 with the material to be cut, as well as a housed portion C with a cutting mechanism.
  • the same module M is shown with the housing removed from the portion C.
  • portion C of the module M is seen with its housing removed.
  • a rotary cutting cylinder 1 is arranged, as well as two clamping counter-cylinders 2, and a vertically movable compensation assembly comprising a compensation carriage 7 and a first compensation roller 11 and a second compensation roller 12. It is convenient when the first compensation roller 11 is an auxiliary roller and the second compensation roller
  • the auxiliary roller 11 causes that a revolution of the main roller 12 is proportional to length of the run of the web 13 between clamping counter-cylinders 2.
  • the cutting cylinder 1 Onto the cutting cylinder 1 at least one cutting die 6 is applied (in the figure the cutting die 6 is seen when removed, in an automatic die removing system 5). When mounted, the cutting die 6 or more cutting dies 6, is/are arranged along at least a part of the circumference of the cutting cylinder 1.
  • the cutting cylinder 1 is a magnetic cylinder, in such case steel cutting dies 6 are used that are thus securely maintained on the cutting cylinder 1.
  • the cutting cylinder 1 may or may not be driven by an independent drive synchronized with the web being rewound 13 during cutting, i.e. operating at a variable speed relative to the linear speed of the material being wound.
  • the module M also comprises assemblies of clamping rollers 9, to clamp the web
  • Fig. 2 shows an embodiment of the module M of the invention, provided with an automatic die mounting system 4 and an automatic die removing system 5.
  • the clamping system 3 of each of the clamping counter- cylinders 2 may comprise an eccentric mechanism 10 and an eccentric actuator 15. In such arrangement the clamping force is adjusted by means of a change in the rotation angle of the eccentric mechanism 10.
  • clamping rollers (9) are also provided with clamping mechanisms (14) that are actuators in this embodiment.
  • journal of each of the clamping counter- cylinders 2 may be fitted within individually bearing-seated rotatable rings 8, providing clamping against the magnetic cylinder.
  • This counter-cylinder 2 construction is shown in the cross-sectional view in fig. 3.
  • the counter-cylinders 3 may be driven synchronically.
  • the web 13 for feeding the material for cutting is rewound between the cutting cylinder 1 and the clamping counter-cylinders 2.
  • the cutting die 6 with a selected pattern of shapes to be cut is applied on the cutting cylinder 1.
  • the web 13 passes between the cutting cylinder 1 and the clamping counter-cylinder 2 seen in the right portion of fig. 2 and then cutting of the first part of the shapes is performed - this is a first phase.
  • the web 13 is subsequently buffered at a specific distance by means of a compensation carriage 7.
  • a fourth phase may encompass compensation movement of the cylinder, determined by the cutting tool (die) size.

Abstract

The present invention provides a module (M) of a machine with a die cutting function, for cutting shapes from a material fed on a web (13), comprising a rotary cutting cylinder (1) with at least one cutting die (6) arranged along at least a part of the perimeter of the cutting cylinder (1), two clamping counter-cylinders (2) and a movable compensation assembly comprising a compensation carriage (7), a first compensation roller (11) and a second compensation roller (12). The module is characterized in that it comprises assemblies of clamping rollers (9) to clamp the web (13) against the clamping counter-cylinders (2), and a clamping system (3) for each of the clamping counter-cylinders (2). The invention also provides a machine with a die cutting function provided with such a module (M).

Description

A module of a machine with a die cutting function
The object of this invention is a module of a machine with a die cutting function, for cutting shapes in material fed on a web of backing sheet. Such module comprises a rotary cutting cylinder with at least one cutting die positioned along at least a part of the perimeter of the cutting cylinder, two clamping counter-cylinders and a vertically movable compensation assembly comprising a compensation carriage along with a first compensation roll and a second compensation roll.
Cutting (cutting out) shapes in materials fed on a web of backing sheet, most commonly labels, on a self-adhesive material, is carried out in many ways. For batch production, it is most commonly performed in a rotational way. The material (web) is rewound between a cutting cylinder with a forme/cutting die (most commonly this is a magnetic cylinder onto which steel cutting dies with magnetic properties are applied, being of a varied width), and a clamping counter-cylinder (also known as an anvil). The maximum size of the shapes being cut depends on the diameter of the cutting cylinder. Usually, the cutting cylinder is driven in a way to adjust its speed to the speed of material being rewound. There are also semi-rotary cutting stations where the size of the cutting die may be variable. This solution enables cutting of a wider range of shape formats with the use of one magnetic cylinder. Then it is additionally necessary to ensure compensation of material rewinding.
Solution of this kind is known from US 2008/0000368 Al . The mentioned document discloses a cutting or printing system comprising a cutting cylinder with two cutting dies and two clamping counter-cylinders. Web with material for cutting or printing is rewound by a device at a constant speed, while the speed of the cutting cylinder changes dependently on whether it is in a phase in which cutting/printing is performed (i.e. the cutting die passes between the cutting cylinder and the clamping counter-cylinder), or in a phase intermediate between cutting/printing (the cutting die is in a position between the clamping counter-cylinders). Additionally, the travelling of the web is compensated by means of a compensation element, comprising a crosspiece and a pair of rollers, which element is displaced vertically in order to change the position of the web being wound on its rollers.
The object of this solution is to provide a device which would be more versatile and better suited to the currently applied speeds of rewinding of the web with material to be cut.
The present invention provides a module of a machine with a die cutting function, for cutting shapes from a material fed on a web, comprising a rotary cutting cylinder with at least one cutting die positioned along at least a part of the circumference of a cutting cylinder, two clamping counter-cylinders and a vertically movable compensation assembly comprising a compensation carriage along with a first compensation roller and a second compensation roller. The invention also provides assemblies of clamping rollers for pressing the web against clamping counter-cylinders, and a clamping system for each of the clamping counter-cylinders.
Preferably, the cutting cylinder is a magnetic cylinder.
Also preferably, the cutting cylinder is driven by an independent drive that is synchronized with the web being rewound during cutting, i.e. operating at a variable speed relative to the material being wound.
Also preferably, the module is provided with an automatic die mounting system and an automatic die removing system. Also preferably, a journal of each of the clamping counter-cylinders is fitted within individually bearing-seated rotatable rings. They provide clamping against the cutting cylinder.
Also preferably, the clamping system for each of the counter-cylinders comprises an eccentric mechanism and an eccentric actuator.
Also preferably, the clamping counter-cylinders are driven synchronically.
Also preferably, the clamping roller assemblies are provided with a clamping mechanism to hold the web against the surface thereof. More preferably, the clamping mechanisms are actuators.
Also preferably, the first compensation roller is an auxiliary roller and the second compensation roller is a main roller.
The invention also relates to a machine with a die cutting function, provided with such a module.
The object of the invention is shown in its embodiments in the drawing, where fig. la shows a module according to the invention in a general perspective view, with a housing thereon, fig. lb shows a module according to the invention in a general perspective view, with a housing removed, fig. 2 shows a construction scheme of a part with a cutting mechanism of a module according to the invention, with a housing removed, fig. 3 shows a longitudinal cross-section through a clamping counter-cylinder, fig. 4 shows a possible configuration of a machine with a die cutting function, provided with a module according to the invention, in a general perspective view, with a housing removed, fig. 5 shows a side view of the machine of fig. 4 with a possible path of a web with a material for cutting.
In fig. la a module M with a die cutting function is shown, of a machine with a cutting function, for cutting shapes out of a material fed on a web 13 of backing sheet. The module may be a part of the machine with a die cutting function, e.g. with a configuration as shown in fig. 4 and fig. 5. As shown, the module M comprises several rewinding rollers 16 of diverse kinds for the web 13 with the material to be cut, as well as a housed portion C with a cutting mechanism. For reference, in fig. lb the same module M is shown with the housing removed from the portion C.
In fig. 2 portion C of the module M is seen with its housing removed. In this part a rotary cutting cylinder 1 is arranged, as well as two clamping counter-cylinders 2, and a vertically movable compensation assembly comprising a compensation carriage 7 and a first compensation roller 11 and a second compensation roller 12. It is convenient when the first compensation roller 11 is an auxiliary roller and the second compensation roller
12 is a main roller. The auxiliary roller 11 causes that a revolution of the main roller 12 is proportional to length of the run of the web 13 between clamping counter-cylinders 2.
Onto the cutting cylinder 1 at least one cutting die 6 is applied (in the figure the cutting die 6 is seen when removed, in an automatic die removing system 5). When mounted, the cutting die 6 or more cutting dies 6, is/are arranged along at least a part of the circumference of the cutting cylinder 1.
In a preferred embodiment, the cutting cylinder 1 is a magnetic cylinder, in such case steel cutting dies 6 are used that are thus securely maintained on the cutting cylinder 1. The cutting cylinder 1 may or may not be driven by an independent drive synchronized with the web being rewound 13 during cutting, i.e. operating at a variable speed relative to the linear speed of the material being wound.
The module M also comprises assemblies of clamping rollers 9, to clamp the web
13 along with the material being fed, against the clamping counter-cylinders 2, and a clamping system 3 for each of the clamping counter-cylinders 2.
Fig. 2 shows an embodiment of the module M of the invention, provided with an automatic die mounting system 4 and an automatic die removing system 5. As shown in the figure, the clamping system 3 of each of the clamping counter- cylinders 2 may comprise an eccentric mechanism 10 and an eccentric actuator 15. In such arrangement the clamping force is adjusted by means of a change in the rotation angle of the eccentric mechanism 10.
The assemblies of clamping rollers (9) are also provided with clamping mechanisms (14) that are actuators in this embodiment.
In an advantageous embodiment, the journal of each of the clamping counter- cylinders 2 may be fitted within individually bearing-seated rotatable rings 8, providing clamping against the magnetic cylinder. This counter-cylinder 2 construction is shown in the cross-sectional view in fig. 3. The counter-cylinders 3 may be driven synchronically.
In the module M of the invention the web 13 for feeding the material for cutting is rewound between the cutting cylinder 1 and the clamping counter-cylinders 2. The cutting die 6 with a selected pattern of shapes to be cut is applied on the cutting cylinder 1. The web 13 passes between the cutting cylinder 1 and the clamping counter-cylinder 2 seen in the right portion of fig. 2 and then cutting of the first part of the shapes is performed - this is a first phase. In a second phase, the web 13 is subsequently buffered at a specific distance by means of a compensation carriage 7. In a third phase it passes between the cutting cylinder 1 and the clamping counter-cylinder 2 seen in the right portion of fig. 2, where cutting of a further part of the shapes takes place. A fourth phase may encompass compensation movement of the cylinder, determined by the cutting tool (die) size.
It is clear that this invention is not limited to the embodiments shown only and that various modifications thereof are possible within the scope of the patent claims, without departing from the subject-matter of the invention.

Claims

Patent claims
1. A module (M) of a machine with a die cutting function, for cutting shapes in a material fed on a web (13), comprising a rotary cutting cylinder (1) with at least one cutting die (6) arranged along at least a part of the perimeter of the cutting cylinder (1), two clamping counter-cylinders (2), a vertically movable compensation assembly comprising a compensation carriage (7) and a first compensation roller (11) and a second compensation roller (12), characterized in that it also comprises sets of clamping rollers (9) to clamp the web (13) against the clamping counter-cylinders (2), and a clamping system (3) for each of the clamping counter-cylinders (2).
2. A module (M) of claim 1, characterized in that the cutting cylinder (1) is a magnetic cylinder.
3. A module (M) of claim 1 characterized in that the cutting cylinder (1) is driven by an independent drive synchronized with the web (13) being rewound during die cutting.
4. A module (M) of claim 1, characterized in that it is provided with an automatic die mounting system (4) and an automatic die removing system (5).
5. A module (M) of claim 1, characterized in that the journal of each of the clamping counter-cylinders (2) is fitted within individually bearing-seated rotatable rings (8).
6. A module (M) of claim 1, characterized in that the clamping system (3) of each of the clamping cylinders (2) comprises an eccentric mechanism (10) and an eccentric actuator (15).
7. A module (M) of claim 1, characterized in that the clamping counter-cylinders (2) are driven synchronically.
8. A module (M) of claim 1, characterized in that the sets of the clamping rollers (9) are provided with clamping mechanisms (14).
9. A module (M) of claim 8, characterized in that the clamping mechanisms (14) are actuators.
10. A module (M) of claim 1, characterized in that the first compensation roller (11) is an auxiliary roller and the second compensation roller (12) is a main roller.
11. A machine with a die cutting function, characterized in that it is provided with a module (M) as defined in one of claims 1-10.
EP18780257.4A 2017-09-06 2018-08-29 A module of a machine with a die cutting function Pending EP3676063A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL422765A PL422765A1 (en) 2017-09-06 2017-09-06 Module of a machine with the stamping function
PCT/PL2018/050045 WO2019050421A1 (en) 2017-09-06 2018-08-29 A module of a machine with a die cutting function

Publications (1)

Publication Number Publication Date
EP3676063A1 true EP3676063A1 (en) 2020-07-08

Family

ID=63720751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18780257.4A Pending EP3676063A1 (en) 2017-09-06 2018-08-29 A module of a machine with a die cutting function

Country Status (3)

Country Link
EP (1) EP3676063A1 (en)
PL (1) PL422765A1 (en)
WO (1) WO2019050421A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083602A (en) * 1961-01-13 1963-04-02 West Virginia Pulp & Paper Co Precise web metering device
DE2642381C3 (en) * 1976-09-21 1981-01-29 Maschinenfabrik Goebel Gmbh, 6100 Darmstadt Device for feeding a web in register
US4567824A (en) * 1980-09-12 1986-02-04 Dahlgren Manufacturing Company, Inc. Planetary conveyor system
US4572752A (en) * 1982-11-12 1986-02-25 Adolph Coors Company Control stretch laminating device
US5156076A (en) * 1991-05-21 1992-10-20 Rosemann Richard R Radially adjustable anvil roll assembly for a rotary die cutting press
US5964970A (en) * 1997-10-14 1999-10-12 Kimberly-Clark Worldwide, Inc. Registration process and apparatus for continuously moving elasticized layers having multiple components
JP2004307122A (en) * 2003-04-04 2004-11-04 Canon Sales Co Inc Tape conveying device, tape processing device, tape conveying method, and tape processing method
US20050000842A1 (en) * 2003-06-03 2005-01-06 Lee Timmerman Bundled printed sheets
ITMI20050331A1 (en) * 2005-03-03 2006-09-04 Omet Srl DIE-CUTTING EMBOSSING SYSTEM, ENGRAVING OR PRINTING WITH LIMITED SIZE
GB2539385B (en) * 2015-06-02 2017-05-03 A B Graphic Int Ltd Apparatus and method for cutting, printing or embossing

Also Published As

Publication number Publication date
WO2019050421A1 (en) 2019-03-14
PL422765A1 (en) 2019-03-11

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