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.

Applications Claiming Priority (2)

Publications (1)

Family

ID=63720751

Family Applications (1)

Country Status (3)

Family Cites Families (10)

• 2017
  • 2017-09-06 PL PL422765A patent/PL422765A1/pl unknown
• 2018
  • 2018-08-29 EP EP18780257.4A patent/EP3676063A1/de active Pending
  • 2018-08-29 WO PCT/PL2018/050045 patent/WO2019050421A1/en unknown

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