JP2012516787A - Method and apparatus for finishing a printing material in a processing machine - Google Patents

Abstract

  The present invention relates to a method and apparatus for finishing a printing material in a processing machine. In the first gap (12) including the cylinder (1) or (2) and the impression cylinder (5) for guiding the printing material, printing ink or varnish or cold film can be applied to the surface of the printing material. A post-positioned second gap comprising a cylinder (2) or (5) carrying an embossing plate (11) and a cylinder (5) or (2) carrying a packing (19) In (13), an embossed portion can be generated in the printed / coated material to be printed, and in the second gap (13), the impression cylinder (5) is an undercut (16) of the cylinder circumferential surface. And at least one incompressible packing (19) or at least one embossing plate (11) is detachably provided on the circumferential surface of the body.

Description

  The present invention relates to a method and apparatus for finishing a printing material in a processing machine as described in the writing section in the independent claim. The method and apparatus are applicable to a printing machine or varnishing machine for processing a material to be printed, especially for sheet material.

  Such a method and apparatus are known from US Pat. The method and apparatus make it possible to create an embossed structure in a sheet-like or web-like printed material in an in-line process of a printing press. The printing material is first subjected to at least one color printing, and the printing material is subsequently varnished, in particular using a water-soluble dispersive varnish. After varnishing, the varnish layer provided on the printing material is dried while the printing material is conveyed, and then the printing material carrying the printing ink layer and the varnish layer is embossed. Done.

  The apparatus described in Patent Document 1 includes a first varnishing device that is placed behind a printing apparatus, and a finishing station that is placed behind the varnishing device. It may be a second varnishing device. A dryer is preferably provided between the first varnishing device and the finishing station so that the surface of the printed and varnished sheet can be machined in the finishing station. Make sure that it is dry before mechanical processing (embossing). The finishing station includes an embossing plate that can be stretched on a first cylinder, for example a plate cylinder. The emboss plate has two layers and acts on an emboss base having elasticity. The emboss base can be stretched on a second cylinder, for example, an impression cylinder, which cooperates with the first cylinder. As the coating material, an aqueous dispersion type varnish is particularly used.

German Patent Application Publication No. 19826974 German Patent Application Publication No. 197299985 German Patent Application No. 102005010207

  The object of the present invention is to create a method and apparatus of the kind described above, in which in a in-line process, the printing material to be processed obtains a quality improvement or finishing by an embossed structure. It is. This problem is solved by the structural features described in the independent claims 1 and 2. Further arrangements are set forth in the dependent claims.

  The first advantage is as follows. That is, printing is performed with at least one printing ink and / or with at least one varnish layer (in whole or in part) on the surface of the material to be printed, preferably the sheet material, in-line in the processing machine. Coating is performed and / or coating is performed with a cold film material, followed by embossing of the sheet material. The sheet material finished in this way has a plastic deformation as a raised portion created by embossing on the surface that has been printed or coated.

  The second advantage is as follows. That is, the operating method can be implemented in a processing machine having at least one printing device and at least one varnishing device or at least two varnishing devices. At this time, as is known from Patent Document 2 or Patent Document 3, for example, the printing apparatus can also function as a varnishing apparatus. Alternatively, the operating method can be carried out exclusively in a processing machine having only a varnishing device, i.e. at least two varnishing devices. In that case, a varnish layer is applied to the sheet material in the first varnishing device and subsequently embossed in the second varnishing device that is placed after. Alternatively, in addition, an embossing device or embossing device, preferably based on a printing device / varnishing device, may be placed after the last printing device or varnishing device in the transport direction of the printing material.

In a further advantageous configuration, the processing machine may have a film transfer device for coating a sheet material with a cold film material. The processing machine is a rotary printing machine that can be operated by single-sided printing or double-sided printing, preferably a sheet-fed rotary printing machine, and the printing apparatus of the sheet-fed rotary printing machine can be preferably operated by offset printing.
As a material to be printed, preferably a sheet material, cardboard, film or paper is particularly suitable.

  The third advantage is as follows. That is, the printing machine or varnishing device of the processing machine can be used for embossing, ie more universally. Such a printing device or varnishing device can be used as an embossing device or an embossing device in a simple manner and no costly changes are required. Alternatively, instead of a printing device or varnishing device, a separate embossing device or embossing device, preferably formed as a module, may be provided integrated in the processing machine. Thereby, the preceding printing process and / or varnishing process and / or other coating processes, for example during cold film transfer, can be combined in a processing machine in combination with a subsequent embossing process.

  Hereinafter, the present invention will be described in more detail based on embodiments. The figure shows the following.

It is a figure which shows the processing machine which has a printing apparatus / varnishing apparatus and a sheet guide cylinder. It is a figure which shows the processing machine which has a varnishing apparatus and a sheet guide cylinder. It is a figure which shows the processing machine which can be drive | operated selectively as a varnishing apparatus, and has a printing apparatus in which the varnishing apparatus is installed.

  A processing machine for sheet material, shown as a rotary printing machine in FIG. 1, includes a plurality of printing apparatuses A for single-sided printing or double-sided printing. Method). The printing device A mainly comprises a plate cylinder / plate cylinder 2, a blanket cylinder 1, an inking device 3, and a dampening device 4 if necessary. The blanket cylinder 1 has a sheet holding means, which is shown as an impression cylinder 5 in the figure, and is operatively connected to a sheet guide cylinder 5 for transferring the sheet material in the conveying direction 7. .

  For multi-color printing, a plurality of offset printing apparatuses A having the same structure are preferably provided in a series structure system, depending on the adjacent printing apparatus A, the configuration of the machine and / or the varnishing apparatuses B, C. A further sheet guide cylinder 6 may be provided between the sheet guide cylinders 5 (impression cylinders 5) as the transfer cylinder 6 for transferring the sheet so as to pass through the processing machine. The sheet guide cylinder 6 may have at least one peripheral surface. The peripheral surface is formed as a complete cylinder with respect to the theoretical cylinder diameter, or, for example, in a configuration having multiple sizes, a plurality of peripheral surfaces provided within the theoretical cylinder diameter. Is included.

As shown in FIG. 1, the first varnishing device B may be placed behind the single printing device A or the plurality of printing devices A in the sheet material conveyance direction 7. A second varnishing device C can be placed behind the first varnishing device B in the transport direction 7. The varnishing devices B and C can be implemented with the same structure, and each includes a plate cylinder / plate cylinder 2, and a dispensing device 9 is operatively connected to the plate cylinder / plate cylinder, respectively. It is arranged by. The dispensing device 9 can include, for example, a chamber type doctor blade having a form roller with a cell structure.
Alternatively, a roller device (pressing roller or pumping roller system) may be used as the dispensing device 9. Furthermore, such varnishing devices B, C each comprise an impression cylinder 5 operatively connected to the plate cylinder / plate cylinder 2.

  In the conveying direction 7 of the sheet material, for example a pressure with a small distance against at least one printing gap / varnishing gap of the printing device A (alternatively at least one varnishing device B, C). A radiation source / drying source 8 may be placed behind the cylinder 5. The radiation source / drying source 8 is directed to the sheet material placed on the sheet guide cylinder 5 for operation. The sheet material is fixed by a sheet holding means, preferably a gripper, of the sheet guide cylinder 5. The processing machine includes a machine control unit. The radiation source / drying source 8 is preferably connected to the machine control of the machine by circuit and signal technology.

A plurality of sheet guide cylinders 5 and 6 may be provided between the two varnishing devices B and C in order to convey the sheet. At this time, the transfer cylinder 6 may be adjacent to an impression cylinder 5 that does not constitute the printing device / varnishing device A, B, C. A radiation source / drying source 8 can be provided adjacent to such an impression cylinder 5 with a small distance. Alternatively, a transfer cylinder 6 may be provided instead of the impression cylinder 5.
The sheet guide cylinder (the impression cylinder 5 and the conveyance cylinder 6) is the same size (one rotation type) or multiple times, especially twice (1/2 rotation), based on the same size plate cylinder / plate cylinder. ) Or (1/3 rotation type). Combining these sizes inside the processing machine is also included. The sheet guide cylinder may also have at least one peripheral surface. The peripheral surface is formed as a complete cylinder with respect to the theoretical cylinder diameter, or, in a configuration preferably having a multiple size, a plurality of circumferences provided within the theoretical cylinder diameter. Includes face.

  For example, a self-contained sheet guide device 10 for supporting the sheet guide cylinder 6 by air pressure, for example, may be provided.

  In the present embodiment, the first varnishing device B has a first gap 12 which guides the varnish, alternatively the ink, and at least one dispensing device 9. And a cylinder 2 shown as a plate cylinder / plate cylinder 2 in this figure, and an impression cylinder 5 for guiding a material to be printed, particularly a sheet material. In the first gap 12, the surface of the printing material can be entirely or partially coated with a varnish layer, or can be printed with printing ink (flexographic printing ink). The first gap 12 may alternatively be provided in the printing apparatus A, and has a means for performing ink application (shown as a plate cylinder / plate cylinder 2 in this figure) for guiding the ink. It is formed by a blanket cylinder 1 operatively connected to the cylinder 2 and an impression cylinder 5 for guiding the sheet material.

In the transport direction 7, a second varnishing device C is subsequently provided. As shown in FIG. 1, the second varnishing device can also be used as an embossing device 14 (embossing device). Instead of the second varnishing device C, a separate embossing device 14 may be provided. Such an embossing device 14 is substantially the same as the varnishing device B or C, but does not include the dispensing device 9.
The second varnishing device C also has a dispensing device 9 which provides a contact point 15 for transferring the varnish / ink to the varnishing plate / printing plate, plate plate / plate cylinder 2. It forms with. The plate cylinder / plate cylinder 2 forms a second gap 13 for transferring the varnish / ink to the printing material together with the impression cylinder 5 which is adjacent and guides the printing material (sheet material). ing.

  In order to perform the embossing in the varnishing device C, the dispensing device 9 of the second varnishing device C can be separated from the plate cylinder / plate cylinder 2 at the contact point 15. Alternatively, the dispensing device 9 or a part of the dispensing device (for example a landing roller with a cell structure) is arranged elsewhere in the second varnishing device C or the second The varnishing device C may be removed. This eliminates contact with the plate cylinder / plate cylinder 2. When formed as a separate embossing device 14 inside the processing machine, the separate embossing device does not require the dispensing device 9 as is well known.

  Such an embossing device 14 includes at least a plate cylinder / plate cylinder 2 and an impression cylinder 5, and the plate cylinder / plate cylinder and the impression cylinder form a second gap 13. Each of the plate cylinder / plate cylinder 2 has a journal 17 on the end face side, and the journals are rotatably supported by bearings 18 on both sides. Each of the bearings 18 may be provided on the side frame, or each of the bearings 18 is provided and fixed inside the side frame. In this case, each bearing 18 is preferably formed of two parts inside the side frame, and includes a first bearing part 18.1 and a second bearing part 18.2. One of the two bearing portions 18.1, 18.2, for example, the second bearing portion 18.2, is formed so as to be movable while being in contact with the bearing 18 or to be removable (releasable) from the bearing. Thus, if necessary, the plate cylinder / plate cylinder 2 can be removed from the bearing 18 or attached to the bearing or replaced with another plate cylinder / plate cylinder 2 with little effort. . The plate cylinder / plate cylinder 2 carries an embossing plate 11, and the embossing plate can be attached (or removable) to the plate cylinder / plate cylinder 2 in the axial direction, for example, an emboss plate accommodated in a fastening means. ) Embossed sleeve. The plate cylinder / plate cylinder 2 or plate cylinder / plate cylinder 2 clamping means has means, eg register pins, for mounting or receiving the embossed plate 11 or the incompressible packing 19 in register. obtain.

  The impression cylinder 5 that forms the second gap 13 has an undercut 16. At this time, the impression cylinder 5 having the undercut 16 may be formed in a size approximately equal to or multiple times based on the plate cylinder / plate cylinder 2 having the same size. Preferably, the plate cylinder / plate cylinder 2 is of the same size, and the impression cylinder 5 with the undercut 16 is formed approximately twice as large. The impression cylinder 5 has two incompressible packings 19. Alternatively, a plurality of fastening means for selectively detachably fixing the two embossed plates 11 are provided. The impression cylinder 5 or the clamping means of the impression cylinder 5 may have means for attaching or receiving the embossed plate 11 or the incompressible packing 19 in register, eg a self-explanatory register pin.

  The undercut 16 is defined as follows. That is, with respect to the theoretical cylinder diameter of the impression cylinder 5, the diameter of the cylinder circumferential surface (circumferential surface) or the pressure forming the cylinder circumferential surface when the cylinder is a multiple of the size. The diameter of the partial peripheral surface of the cylinder 5 is smaller than the theoretical cylinder diameter of the impression cylinder. If necessary, the impression cylinder 5 with the undercut 16 on the circumference of the cylinder can have sheet holding means. The sheet holding means is completely provided inside the impression cylinder 5 defined by the theoretical cylinder diameter at least when passing through the gap 13 or conveying the sheet material.

  The impression cylinder 5 of the embossing device 14 has fastening means for fixing at least one packing 19 to the cylinder peripheral surface in addition to the sheet holding means, for example, the gripper. In the case of a cylinder having a plurality of sizes and correspondingly a plurality of partial peripheral surfaces, therefore, fastening means for fixing a plurality of packings 19 are provided on the peripheral surface of the impression cylinder 5. ing. The surface of the single packing 19 or the plurality of packings 19 carrying the material to be printed is relatively smooth, and alternatively the surface of the packing may have a microstructure.

When processing a relatively compressible printing material, such as cardboard, or a relatively incompressible printing material, such as paper, on the surface of the cylinder surface of the impression cylinder 5, as is well known, an incompressible surface is known. At least one incompressible packing 19 is detachably provided. Therefore, when forming as the impression cylinder 5 having a double size, the two incompressible packings 19 are provided on the incompressible surface of the partial peripheral surface as is well known. The single packing 19 or the plurality of packings 19 form a body peripheral surface. At this time, the plate cylinder / plate cylinder 2 forming the second gap 13 carries the embossed plate 11.
When processing a relatively compressible printing material, the at least one packing 19 is preferably formed from at least one metallic material. When processing a relatively incompressible material to be printed, the packing is preferably formed from at least one incompressible elastomer, preferably an incompressible rubber blanket.

  The formation of the second gap 13 by the impression cylinder 5 having the undercut 16 and the plate cylinder / plate cylinder 2 includes providing at least one packing 19 on the impression cylinder 5 and embossing plate on the plate cylinder / plate cylinder 2. This is not limited to the provision of 11. On the contrary, the at least one packing 19 may be provided on the plate cylinder / plate cylinder 2, and the at least one embossing plate 11 may be provided on the impression cylinder 5 having an undercut 16. The selective provision of the embossed plate 11 and the packing 19 can also be selected in connection with the occasional operation method, that is, surface printing (single-sided printing) or surface / backside printing (double-sided printing).

  If necessary, at least one underlay may be provided on the body peripheral surface or partial peripheral surface of the impression cylinder 5 as, for example, unevenness removal. On the at least one underlay, subsequently, at least one packing 19 is detachably provided on the impression cylinder 5. For this purpose, the impression cylinder 5 has corresponding fastening means for fixing the at least one packing 19. Thus, the impression cylinder 5 having the undercut 16, which has at least one underlay and, if necessary, at least one packing 19 removably provided on the underlay, is accurately processed. Form a body diameter that is meaningful to

FIG. 2 shows two varnishing devices B, C that form part of the varnishing machine. The structure of the varnishing device is substantially similar to the device configuration shown in FIG.
When the embossing plate 11 is disposed on the plate cylinder / plate cylinder 2 of the second varnishing device C or the embossing device 14, the dispensing device 9 is configured to support the embossing plate 11 at at least one contact location 15. / Separated from the plate cylinder 2. Alternatively, the dispensing device 9 may be temporarily removed from the second varnishing device C.
In a further configuration, the embossing device 14 is constituted solely by a plate cylinder / plate cylinder 2 carrying the embossing plate 11 and again a sheet guide cylinder 5 as an impression cylinder 5 having an undercut 16 and at least one packing. , May be formed. The bearing 18 for the plate cylinder / plate cylinder 2 corresponds to the arrangement shown in FIG.

  FIG. 3 shows a further configuration as known from US Pat. According to this configuration, the varnishing device B is operatively connected to the blanket cylinder 1 of the printing device A when necessary. In the transport direction 7, a post-varnishing device C is subsequently provided, which can also be used as the embossing device 14 or can be formed as an embossing device. This configuration is generally similar to the device configuration shown in FIG.

  In summary, in the second gap 13, the impression cylinder 5 has an undercut 16 on the circumference of the cylinder, which is optionally provided with at least one incompressible packing 19 or at least one embossment. A plate 11 is detachably provided. The second gap 13 is provided in an embossing device 14 including a plate cylinder / plate cylinder 2 and an impression cylinder 5 having an undercut 16, or at least the plate cylinder / plate cylinder 2 and the undercut 16 are connected to each other. It is provided in the varnishing apparatus C suitable for embossing including the impression cylinder 5 which has. The first gap 12 is located in a pre-installed printing apparatus A, varnishing apparatus B, or cold film transfer apparatus that includes at least a plate cylinder / plate cylinder 2, and optionally a blanket cylinder 1 and an impression cylinder 5. Can be provided. The cold film transfer device may be incorporated in a printing device or a varnishing device. In order to perform double-sided printing, at least one device for reversing the sheet material can be placed in front of at least the second gap 13. At least one such device may be placed in front of the first gap 12 inside the processing machine.

  The action process is as follows. In the first gap 12 including the cylinder 1 or 2 and the impression cylinder 5 for guiding the printing material, the surface of the printing material is printed and / or coated, and then the cylinder carrying the embossing plate 11. In a processing machine in which the printed / coated material to be printed is embossed in a second gap 13 which is placed downstream, comprising 2 or 5 and a cylinder 5 or 2 carrying a packing 19. In order to finish the printing material, it has an undercut 16 on the cylinder peripheral surface, and at least one packing 19 provided on the cylinder peripheral surface or at least one provided on the cylinder peripheral surface. The printing material provided on the impression cylinder 5 having two embossed plates 11 is conveyed through the second gap 13.

The operation method shown in FIG. 1 is as follows. The sheet material is preferably transported in the conveying direction 7 by the sheet guide cylinders 5, 6 and has at least one dispensing device 9 and a cylinder 2 for guiding the varnish, and a pressure for guiding the sheet material. Printing is performed in the first gap 12 including the cylinder 5 either entirely or partially with a varnish layer, or in at least one printing device A, preferably by offset printing. Thereafter, in the second gap 13 disposed behind the cylinder 2 that carries the embossed plate 11 and the impression cylinder 5 that has the undercut 16 and guides the sheet material, the sheet Embossing is performed on the surface of the paper material. Subsequently, using at least one radiation source / drying source 8, the varnished and / or printed surface of the sheet material can be dried / cured.
If necessary, the sheet material can be fed to a sheet feeding device that is placed behind in the transport direction 7 and lowered to a delivery pile.

1 blanket cylinder, 2 plate cylinder / plate cylinder, 3 inking device, 4 dampening device, 5 impression cylinder (sheet guide cylinder), 6 transport cylinder (sheet guide cylinder), 7 transport direction, 8 radiation source / Drying source, 9 dispensing device, 10 sheet guide device, 11 embossing plate, 12 first gap, 13 second gap, 14 embossing device (embossing device), 15 contact point, 16 undercut, 17 journal, 18 bearings, 18.1 first bearing portion, 18.2 second bearing portion, 19 packing, A printing device, B first varnishing device, C second varnishing device

Claims (12)

A method for finishing a printing material in a processing machine,
In a first gap (12) comprising a cylinder (1 or 2) and an impression cylinder (5) for guiding the printing material, the surface of the printing material is printed and / or coated and then embossed Printed / coated in a post-positioned second gap (13) comprising a cylinder (2 or 5) carrying a plate (11) and a cylinder (5 or 2) carrying a packing (19) In the method of embossing the printing material,
The body has an undercut (16) on the circumferential surface and has at least one packing (19) provided on the circumferential surface or at least one embossing plate (11) provided on the circumferential surface. Method according to claim 1, characterized in that the printing material provided on the impression cylinder (5) is conveyed through the second gap (13). An apparatus for finishing a printing material in a processing machine,
In the first gap (12) including the cylinder (1 or 2) and the impression cylinder (5) for guiding the printing material, printing ink or varnish or cold film can be applied to the surface of the printing material. Then printing in a post-positioned second gap (13) comprising a cylinder (2 or 5) carrying an embossing plate (11) and a cylinder (5 or 2) carrying a packing (19) In an apparatus capable of generating an embossed part in the coated material to be printed,
In the second gap (13), the impression cylinder (5) has an undercut (16) on the circumference of the cylinder,
A device characterized in that at least one incompressible packing (19) or at least one embossing plate (11) is optionally provided on the circumferential surface.   Each of the plate cylinder / plate cylinder (2) has a journal (17) provided on the end face side, and the journal (17) is rotatably supported by bearings (18) on both sides. 3. The device according to claim 2, wherein each of the bearings (18) is fixedly provided inside the side frame.   Each bearing (18) is formed of two parts, and includes a first bearing part (18.1) and a second bearing part (18.2). 4. A device according to claim 2 or 3, characterized in that one of the two (18.1 or 18.2) is movable while in contact with the bearing (18) or removable from the bearing.   Based on the plate cylinder / plate cylinder (2) having the same size, the impression cylinder (5) having the undercut (16) is formed to be approximately the same size or multiple times. The device according to claim 2.   The plate cylinder / plate cylinder (2) has the same size, and the impression cylinder (5) having an undercut (16) is formed to be approximately twice the size. The impression cylinder (5) 6. A plurality of clamping means for selectively detachably securing two incompressible packings (19) or two embossing plates (11) according to claim 5. apparatus.   The second gap (13) is provided in an embossing device (14) including the plate cylinder / plate cylinder (2) and the impression cylinder (5) having an undercut (16). One gap (12) is a front printing apparatus (A) including at least the plate cylinder / plate cylinder (2) and the impression cylinder (5), a varnishing apparatus (B), or a cold The apparatus according to claim 2, wherein the apparatus is provided in a film transfer apparatus.   8. Device according to claim 2 or 7, characterized in that at least one device for reversing the sheet material is placed in front of at least the second gap (13).   3. A device according to claim 2, characterized in that the packing (19) is made of a metallic material or an incompressible elastomer, preferably an incompressible rubber blanket.   The impression cylinder (5) having an undercut (16) on the cylinder peripheral surface has a sheet holding means, and the sheet holding means is a theoretical cylinder when conveying the sheet material. Device according to claim 2, characterized in that it is completely provided inside the impression cylinder (5) defined by its diameter.   The plate cylinder / plate cylinder (2) or the clamping means of the plate cylinder / plate cylinder (2) is mounted or accommodated in register with an embossed plate (11) or incompressible packing (19). Device according to claim 2, characterized in that it has means for:   The impression cylinder (5) or the fastening means of the impression cylinder (5) comprises means for attaching or receiving the embossing plate (11) or the incompressible packing (19) in register. The apparatus according to claim 2.

Images