JP4851419B2 - Apparatus and method for finishing a sheet-like substrate in a sheet printer - Google Patents

Description

  The invention relates to an apparatus and a method for finishing according to claims 1 and 9.

  Finishing processing of a sheet-like substrate in a sheet-fed printing machine, such as cutting, punching, embossing, etc., can often be introduced between two processing rollers that rotate the substrate, between the processing rollers It is characterized by being processed when passing through the working gap.

  Subsequent processing performed in-line on a printing press, for example, punching to produce a cutting part for packaging material, which is performed immediately after the printing process and possibly the varnishing process, is already known. U.S. Pat. No. 6,089,077 discloses a machine for automatically producing printed cuts for all kinds of packaging materials from endless web-like materials. At this time, a varnishing process is performed between printing in the printing apparatus and the punching apparatus.

  In Patent Document 2, perforation or grooving is performed on a sheet-like material conveyed through a printing gap of a cylinder of a printing apparatus, using a perforated band or a grooving device affixed on the cylinder. An apparatus is disclosed that makes it possible to do so. This is configured as a special application example, and it is not assumed that a punching device is used to separate individual cutting parts from the entire sheet. However, from this invention, it is known to guide a printed sheet so as to pass through a processing gap by using a grip fixed to one of the cylinders for processing.

  Patent Document 3 discloses a machining apparatus having two rotating cylinders. These cylinders are provided with flexible plates with punching and / or embossing plates, and these plates provided on the cylinders form a processing gap, and in the processing gap, a single wafer is formed. The paper is deformed or punched. In order to accurately define the registration for the print image area, at least one cylinder has a gripper, and the gripper guides the sheet through the processing gap. Direct in-line coupling of the solution found in the invention to a printing press is not described in the patent document, but it is mentioned to punch printed sheets.

  Patent Document 4 describes a varnishing device for a sheet-fed printing machine, and describes a device that can be selectively used as a varnishing device or a processing device for punching, grooving, and perforating. The disadvantage of this device is that the use of the varnishing device is for either processing only or varnishing. However, if it is necessary to mechanically process the printed sheet, it is recommended to first varnish. As a result, it is possible to prevent the processing tool from being stained with the printing ink or being transferred. Nonetheless, this method requires a double varnishing device with at least two varnishing devices and a corresponding drying path for drying the varnish before mechanical processing. Become. With the solution found by the invention, it is not possible to use the usual drying path for the varnish, i.e. the path leading from the varnishing device to the lowering of the sheet onto the discharge device pile. A further disadvantage of the solution found by the invention is that in a machine with a double-size impression cylinder, for example in a stamping process with a master mold and a father mold, the plate provided on the plate cylinder is It is necessary to adjust with respect to the two plates respectively provided in the half of the cylinder constituting the impression cylinder. Such a mounting process is very time consuming and technically difficult to handle. The difficulty of reaching the impression cylinder further complicates the process.

  U.S. Pat. No. 6,089,089 discloses a sheet-fed printing press having a special punching device that connects directly to the last printing or varnishing device. Also in this invention, the drying path in the paper discharge device cannot be used. The solution found by this invention also has drawbacks when it is not necessary to perform mechanical processing on the printed sheet. Since the printed sheet has to be guided through the punching device, there is always a risk of colliding with the printed sheet when the processing cylinder moves away. . Also, because of the special configuration of the punching device, it is not easy to implement the existing sheet-fed printing press later.

Patent Document 6 shows a punching and processing device provided in a sheet raising portion of a paper discharge device. The printed sheet is conveyed through the cylinder without any omission until the original punching process, and is transferred to the conveying mechanism only after mechanical processing. The advantage of such a mechanism is that it has excellent operability and free space for providing an assembly for removing unnecessary parts. The disadvantage of the mechanism according to the invention is in particular that it is a special assembly and therefore cannot be installed later on an existing printing press without high costs. Since the drying path of the paper discharge device cannot be used, in the mechanism according to the present invention, another module type drying device is provided after the varnishing device or the last printing device. However, the actual experience has shown that varnish drying is not necessary, except that the path length required for the high varnish gloss often required during finishing of printed products is lacking. For this reason, it has become clear that a single modular dryer is often insufficient.
German Patent Invention No. 435716 German Patent Application No. 2341326 US Pat. No. 3,338,991 German Patent Invention No. 4138278 German Patent Application Publication No. 10306493 German utility model No. 202004018763

  An object of the present invention is a processing apparatus for performing mechanical processing on a printing sheet in a printing machine, which can be easily attached to an existing printing machine later and is suitable for drying varnish or printing ink. It is to provide a processing apparatus that does not have limitations on the method.

  The object is solved by a device with the features of claim 1 and a method with the features of claim 9.

  Further preferred embodiments are described in the dependent claims.

  The processing device according to the invention is preferentially used to punch out printed sheets in a printing press, thereby creating individual cuts for folding paper boxes, and also punches windows in envelopes and end prints. Also used for. The processing apparatus is also used for finishing a printed sheet or embossing / grooving by embossing, in particular embossing using a mother die and a father die into a convex shape or a concave shape. The individual processing methods can be realized together in one operating step in the present invention as long as they can be technically implemented together.

  Here, the modular processing apparatus is incorporated in a separate modular part, and the modular part can also be incorporated in the printing machine later. In this case, the chain guide needs to be adapted only on a case-by-case basis, but the cost is reasonable. It is also a major advantage that the length of the drying path for the printing ink and varnish drying and the length of the elapsed path can be kept approximately equal or equal. The drying device, such as the infrared drying device 14, as well as the combination of this with a warm air drying device, and / or the ultraviolet drying device 13 may remain in place and does not require a new arrangement / new configuration. . Thus, any methodological hazards to today's established solutions are eliminated.

  The processed sheet is delivered to the further chain conveyor mechanism 6 after the modular processing apparatus, which can lower the processed sheet to the paper output device pile. The chain mechanism also supplies the associated waste part to a waste container or waste suction device when the useful part is a part to be cut, for example for a folding paper box and separated from the waste part, for example as a frame part. You can also As an alternative or in addition to the chain conveyor mechanism 6, it is also possible to unload sheets, useful parts and / or waste parts which are placed after the processing station and processed by the conveyor belt according to the operating mode.

  A suitable operation mode in the punching operation is as follows. That is, the printed sheet is supplied to a module type processing apparatus provided with a carriage type holding conveyor mechanism 5 where the sheet is guided and delivered to a processing cylinder 8 having at least one holding. In the processing gap between the processing cylinders 8 and 9, the printed sheet is subjected to processing by a punching process, whereby the useful part, for example the cutting part A for a folding paper box, is the remaining part of the printed sheet and The other wasteful part B is kept connected to other useful parts only through a small blank part, and the small waste part B between the useful parts is completely taken out. These waste parts are supplied to the suction device 10 by a negative pressure of air or fixed by a pin in the processing cylinder 9 provided above, and the suction device sucks the waste part B from the processing cylinder 9 to produce waste. Supply to the processing unit. It is also conceivable that the waste part is discharged through the processing cylinder 8 provided below and the waste part is sucked from below using a suction device. The punched sheet having a useful part and a frame part and having no small waste part B is supplied to the paper discharge device pile by the second chain conveyor mechanism 6 and lowered to the paper discharge device pile. Because the frame is on the outside, the frame can be easily removed using an instrument.

  Further possible operating modes are immediately after the stamping sheet has been processed in the processing gap between the processing cylinders 8 and 9, for example by separating means into at least one useful part and at least one waste part. That's it. At this time, the frame portion is also supplied to the suction device in the same manner. However, this has a gripping or suction portion in which the processing cylinder 9 provided on the upper side rotates, and these gripping or suction portions bring the frame portion downward. It is carried out by receiving from the processing cylinder 8 provided and guiding it upward. Most advantageously, the spreading means, which can be said to be completely safe in terms of surface damage, can be completely abandoned by turning the sheet frame. The small waste part B is fixed to the processing cylinder 9 provided above by air pressure or by a pin and is sucked together with the frame part by the suction device 10 and supplied to the waste processing part. . A useful part, for example a cutting part A for a folding paper box, is then fed to the paper stacking mechanism via a conveyor belt mechanism. Alternatively, the useful part may be supplied to the paper stacking mechanism immediately after the processing step via some sort of slide 12 or other suitable transport mechanism.

  A further advantage of the solution according to the invention is that it does not cause a disadvantage when there is no need to process the printed sheet. In such a case, since the sheet is guided almost linearly and passing through the modular processing device with only a slight curvature, the upper cylinder is hydraulic, electric Alternatively, it may be lifted by a relatively small amount by air pressure. As a result, the edge of the sheet hardly needs to descend the inclined part as seen in the sheet descending part of the varnishing device or the printing device. The processing cylinder provided above can likewise be removed if, for example, it is necessary to remove the complete test sheet to determine the print quality. In a preferred further formation, the modular processing device is connected to a sheet inspection device and / or a colorimetry device that inspects the sheet for measurement errors and control deviations. The modular processing device is activated only when the sheet is within a predetermined quality frame. That is, sheets with measurement errors and / or sheets with control errors are supplied to the user as a whole, so that the user can take appropriate measures. This also has the advantage that the stamped useful part does not require further inspection and can be immediately supplied to further processing parts.

  The two processing cylinders 8 and 9 of the module type processing apparatus are connected to each other through a gear. Alternatively, two or at least one of these processing cylinders may comprise a single controllable motor. The modular machining apparatus is driven via a single motor, where one machining cylinder has a controllable single motor and the other cylinder is optionally driven via a gear or, for example, a drive system Through its own drive. The modular processing apparatus can be driven via a cardan shaft or a longitudinal axis. At this time, the driving force is supplied to the cardan shaft or the longitudinal axis in the last printing apparatus via a motor. It is also conceivable to drive the modular processing device via a chain gear device driven by a chain.

  Hereinafter, the present invention will be exemplarily described with reference to the drawings.

  Punching can be regarded as the most problematic processing method in finishing the printing material. In the punching process, as shown in FIG. 1 for a sheet of paper for punching having a large number of cutting parts for a folding paper box, the individual punching cuts A are from uncut sheets C. Disconnected. At this time, a so-called frame portion mainly composed of a sheet edge of the sheet and a small amount of waste portion B are generated. Such a small waste portion is generated particularly when the cut portion A is arranged so as to intersect the printed sheet C. These small waste parts B need to be reliably removed. Otherwise, these waste units move around in the machine, and in some cases, it may be necessary to reselect useful cutting units. This problem also applies to, for example, the case of punching windows in printed sheets.

  The basic approach to addressing this problem in in-line processing is that a number of individual margins remain after the punching process between the individual cuts A and the printed sheets C for the folding paper box. That's it. These dot-like margins connect the cutting part A for the foldable paper box with the printed sheet C and the small waste part B. The waste frame that borders the printed sheet after the punching process is easily and quickly removed using an instrument. It is much more difficult to remove small waste sections B later because these waste sections are located in the middle of the sheet. The solution according to the invention should therefore make it possible to remove such a small waste part B from a stamped printed sheet in a processing device.

  The solution according to the invention shown in FIG. 2 is arranged in a paper discharge device 1 of a sheet-fed printing machine. The paper discharge device 1 is a part of a sheet-fed printing machine having a large number of printing devices arranged in a line in front and back, and optionally one or a plurality of varnishing devices. It has a plate cylinder, a transfer cylinder, a sheet guide cylinder formed as an impression cylinder, an inking device and preferably a dampening device, between the impression cylinders of adjacent printing or varnishing devices. Is provided with a sheet guide cylinder formed as a transfer cylinder, and the sheet guide cylinder conveys the sheet together with the impression cylinder so as to pass through the printing machine, and in some cases among the transfer cylinder One or more of these are formed as a return cylinder, thereby inverting the printed sheet. The paper discharge device 1 has a holding bridge that is fixed to the chain conveyor mechanism on both sides and receives a sheet from the impression cylinder 3 that guides the sheet, and normally the sheet until it is lowered to the paper discharge device pile 7. Transport paper.

  According to the invention, the chain conveyor delivers the sheets in the processing cylinder 8 of the modular processing device. The modular processing apparatus is composed of two rotating processing cylinders 8 and 9, and the processing cylinders jointly form a processing gap. In this processing gap, the sheet is mechanically processed by punching and / or grooving and / or embossing and / or perforation.

It is a figure which shows the printed sheet paper provided with the cutting part for a some punching process. It is a figure which shows the apparatus based on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Paper discharge apparatus 2 Plate cylinder 3 Pressure cylinder 4 Sheet paper guide cylinder 5 Carriage type holding conveyor mechanism 6 Chain conveyor mechanism 7 Paper discharge apparatus pile 8 Processing cylinder 9 Processing cylinder 10 Suction apparatus 11 Waste part discharge apparatus 12 Sending apparatus 13 Ultraviolet rays Dryer 14 Infrared dryer 15 Module A Cutting section for punching B Waste section C Printed sheet

Claims (10)

A modular processing device for performing mechanical processing such as punching, grooving, embossing, etc. on printed and optionally varnished printed sheets in a sheet printing machine,
The sheet-fed printing machine is
A plurality of printing devices provided continuously in front and back;
Optionally with one or more varnishing devices,
Each printing device
Plate cylinder,
A transfer cylinder;
A sheet guide cylinder formed as an impression cylinder;
An inking device;
A dampening device,
A sheet guide cylinder formed as a transfer cylinder between the impression cylinders of adjacent printing apparatuses or varnishing apparatuses is provided,
The sheet guide cylinder conveys the sheet together with the impression cylinder so as to pass through the printing press,
One or more of the transfer cylinders are formed as return cylinders, thereby inverting the printed sheet,
The sheet-fed printing press also includes a paper discharge device,
The modular processing apparatus is a rotary processing apparatus, and the printing sheet can be introduced between two rotating processing rollers in the modular processing apparatus and acts when passing through a processing gap. Processed by instrument members,
The processing cylinder has at least one grip for conveying the sheet-like base material in register,
The printed sheet is picked up by a carriage-type retainer suspended on a circulating chain from the impression cylinder for guiding the sheet of a printing device or varnishing device provided last in the direction of production flow. In the module type processing device further conveyed in the paper discharge device,
The printed sheet (C) is a cylinder (8) for guiding the sheet of the module type processing device from the carriage type grip of the first chain conveyor device (5) of the paper discharge device (1). , 9), and after the mechanical processing is performed in the processing gap, the processed printed sheet or the processed printed sheet portion has at least one is handed over to a further conveying mechanism (6),
As long as it is not necessary to process the sheet in the modular processing apparatus, the processing cylinder (9) provided above is provided below by hydraulic pressure, electricity, air pressure, or mechanically. The printing cylinder (8) can be vertically separated from the processing cylinder (8), so that the printed sheet (C) is transported through the processing apparatus without being damaged. Modular processing equipment.   2. A modular machining device according to claim 1, characterized in that at least one machining cylinder (8, 9) of the machining device has a controllable drive.   2. The module type according to claim 1, wherein the module type processing apparatus is connected to the last printing apparatus or varnishing apparatus via a cardan shaft which is a longitudinal axis of a rigid body. Processing equipment.   The modular processing apparatus according to claim 1, wherein the modular processing apparatus is connected to the printing apparatus via a gear train.   The modular processing apparatus according to claim 1, wherein the modular processing apparatus is connected to the printing apparatus via a gear train and a longitudinal axis or a cardan shaft.   The two processing cylinders (8, 9) have a meshing bar or a gripping meshing mechanism, and the holding of one processing cylinder (8, 9) is pivotable inward and / or outward, The modular processing apparatus according to claim 1.   One processing cylinder (8, 9) has at least one grip for conveying sheets, and the corresponding other processing cylinder is a ridge for suction by penetrating or segmented air pressure. Part or suction surface or at least one suction part, and these holding and suction parts are provided so as to be able to grip the printed sheet or the printed sheet part at the holding end. The module type processing apparatus according to claim 1. A method for operating a modular processing apparatus according to claim 1 to punch a cutting part or other punching part from an uncut sheet.
The cutting section includes a small margin after a punching process in a frame formed by each other and the gripping edge and the printed sheet constituent part provided on the outer edge of the printed sheet. In a method of being transported away from the module type processing apparatus together by a transport device,
The internal waste part formed between the individual cutting parts is completely punched out,
The punched waste part is gripped by a processing cylinder via a pin or a pneumatic device and supplied to a suction device,
A method in which the suction device acts against the processing cylinder and sucks these waste parts from the processing cylinder (8, 9). The method according to claim 7 or claim 8 for operating the modular processing apparatus according to claim 1, wherein the cutting part or other punching part is punched out of the uncut sheet.
The printed sheet is gripped by the processing cylinder (8, 9),
Supplied to the machining gap,
In the machining gap, the useful part is completely punched out and the remaining frame part is passed or penetrated by the corresponding machining cylinder, or for suction by segmented air pressure. A method characterized in that it is gripped by means of a ridge or by at least one suction part and supplied to the suction device via the corresponding working cylinder, and the useful part is delivered to a further transport mechanism (6). . 10. A method according to claim 9 , characterized in that the separation into at least one useful part and waste part is assisted by spreading means.

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