JP2005081752A - Variable printing processing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out continuously flat board processing of cutting process or the like together with variable printing. <P>SOLUTION: A nip part made to have a large diameter for carrying out printing by making contact with a form on a peripheral surface of a printing cylinder comprising a printing cylinder and an impression cylinder which are arranged by pinching the forming 8 running by both intermittent feeder between the intermittent feeders 1, 2 enabled to carry out normal rotation running and reverse rotation running, at least one set of printing unit 3a, 3b, 3c, 3d by providing a nip open part made to have a small diameter so as to have a gap between the form in a peripheral direction, and a flat board processing machine for applying flat board processing to the form are arranged. Then, intermittent feed operation of the form with the intermittent feed apparatus is stopped over a specific time. When the nip is open in the printing unit, and flat board processing is carried out on the form in the stop with the flat board processing machine. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention performs continuous printing on a continuous paper that is intermittently fed within a peripheral length range of the printing cylinder, and variable printing is sequentially performed in each scheduled printing section, and each printed pattern is printed in this manner. The present invention relates to a variable printing processing machine that performs flat plate processing that performs processing by stopping paper such as punching, foil stamping, number printing, and engraving.

  The variable printing machine is configured as shown in FIG. 1, and printing units 3a and 3b are arranged between a pair of intermittent feeding devices 1 and 2 that can perform forward rotation and reverse rotation synchronously. . The printing units 3a and 3b are composed of a plate cylinder 4, a blanket cylinder 5, and an impression cylinder 6. The blanket cylinder 5 has a large-diameter portion on the peripheral surface thereof that serves as a printing surface having, for example, a 1/2 circumferential length sa. Ink images transferred from the plate cylinder 4 to a blanket 7 attached to the peripheral surface of the large diameter portion are printed on a sheet 8 positioned between the impression cylinder 6 (for example, Patent Document 1).

  In this variable printing machine, in order to simplify the explanation, it is assumed that the vertical length of the printed pattern is the same as the circumferential length sa (nip portion) of the large-diameter portion 7 of the blanket cylinder 5. The operation will be described.

  In this case, in order to repeatedly print the image of the vertical length sa on the paper 8 without a gap, one printing by the large diameter portion of the continuously rotating blanket cylinder 5 is completed, and the terminal portion a of the large diameter portion is the paper. The paper 8 stops at the moment of leaving the paper 8, and the paper 8 again turns around the large diameter portion of the blanket cylinder 5 at the moment when the starting end s of the large diameter part of the blanket cylinder 5 rotating in this state contacts the paper 8. By traveling at the same speed as the speed, the pattern is repeatedly printed without a gap between the upstream pattern.

  However, due to the inertia of the operation of the pair of intermittent feeding devices 1 and 2, when the paper 8 is intermittently run, the paper 8 cannot be stopped instantaneously or run. In order to start traveling, a deceleration section and an acceleration section are required, and a portion where the paper 8 travels over both sections becomes a gap between pictures. For this reason, the intermittent feeding devices 1 and 2 are actually reversed over the travel length of the speed reduction section and the speed increase section while the small diameter portion (nip opening portion) of the blanket cylinder 5 faces the paper 8. Thus, the paper 8 is made to run backward.

FIG. 2 is a diagram showing the running operation of the paper 8 at this time, where the vertical axis indicates the speed v and the horizontal axis indicates time t. Then, s ₁ when one rotation of the large-diameter portion end a of the rotating blanket cylinder 5 is separated from the paper 8 and then separated again is one cycle after the large-diameter end a is separated from the paper 8. A deceleration zone until 8 stops, s ₂ is a reverse running zone, s ₃ is a speed increasing zone, and each area indicates a running distance of the paper 8.

That is, the sheet 8 is decelerated to zero speed over time t ₁ from when the end a of the large-diameter portion of the blanket cylinder is separated and then travels in reverse over time t ₂ and then over t _3. The vehicle runs forward and is increased to the peripheral speed of the large diameter portion of the blanket cylinder 5. T ₁ + t ₂ + t ₃ = T ₁ is the time from when the end a of the large diameter portion of the blanket cylinder 5 is separated from the paper 8 until the start end s of the blanket cylinder 5 contacts the paper 8, that is, the small diameter portion faces the paper 8. This is the same as the nip opening time. Further, as described above, s ₁ + s ₃ = s ₂ , and the forward running distance and the reverse running distance s _{2 of} the deceleration zone s ₁ and the speed increasing zone s ₃ are the same, and thus, between the pictures. There will be no gaps. In FIG. 2, T ₂ is the time in the constant speed region s ₄ where the pattern a is printed when the end a contacts the paper 8 from the start end s of the large-diameter portion 7 of the blanket cylinder 5, and T ₁ + T ₂ indicates the blanket cylinder It is time to make one rotation.

  In this way, the paper 8 in this type of variable printing machine is repeatedly subjected to forward rotation and reverse rotation every time the blanket cylinder 5 rotates once. In addition, as shown in FIG. 2, the transition from the forward running to the reverse running and from the reverse running to the normal running is performed without being stopped. In addition, a variable printing machine is also known in which the paper 8 is stopped at a constant position where the forward rotation and the reverse rotation are switched (see Patent Document 2).

  By the way, the above-described variable printing machine is widely used as a printing machine for printing a sticker or a label because the vertical length of a printed matter can be arbitrarily changed.

JP 2003-39630 A JP 62-4163 A

  In the case of a seal or label, after printing with the variable printing machine, post-processing such as punching, foil stamping, number printing, and engraving must be performed.

  In the conventional production of the above-mentioned sticker or label, after printing on continuous paper by the variable printing machine, the paper is wound and stored in a roll shape, and then a punching machine equipped with an intermittent paper feed mechanism installed separately. Since it was designed to obtain seals and labels by performing predetermined processing through flat plate processing machines such as foil stamping machines, number printing machines, and stamping machines, there was a problem that continuous production of seals and labels could not be performed there were. Further, in addition to the variable printing machine, a flat plate processing machine such as a punching machine has to be individually installed, resulting in a problem that the installation floor area becomes large.

  In order to solve the above-mentioned conventional problems, the present invention intends to provide a variable printing machine capable of performing flat plate processing of a seal or label printed by variable printing together with this printing process. Therefore, the configuration is arranged between a pair of intermittent feeding devices that can perform forward running and reverse running synchronously with a sheet that is run by both intermittent feeding devices sandwiched therebetween. A nip portion that has a printing cylinder and an impression cylinder and that has a large diameter for printing on the circumferential surface of the printing cylinder in contact with the paper, and a nip opening portion that has a small diameter so that there is a gap between the paper and the circumferential direction. At least one set of printing units and a flat plate machine for performing flat plate processing on the paper, and the intermittent feeding operation of the paper by the intermittent feeding device is performed over a predetermined time when the nip is opened in the printing unit. Sealed, it has a configuration in which to perform the flat panel processing to the paper at the time of this stop at Tairaban machine.

  According to the present invention, flat plate processing such as punching, foil stamping, number printing, and engraving on a printed material printed by variable printing is continuously performed between the upstream and downstream intermittent feeding devices for performing variable printing. This kind of printing can be performed with good workability.

  Further, by installing a flat plate processing machine, which is conventionally installed separately from variable printing, in the variable printing machine, the installation floor area of the entire machine can be reduced. Further, since the intermittent feeding device as a flat plate processing machine is not required, the entire machine can be miniaturized and the structure can be simplified.

  The best mode of the present invention will be described with reference to FIGS. In this description, the same members and the same diagrams as those shown in FIGS. 1 and 2 will be described using the same reference numerals.

  In FIG. 3, 10 is a variable printing machine, 11 is a flat plate processing machine that performs flat plate processing on the stopped paper 8 such as flat punching, foil stamping, number printing, engraving, etc., 12 is a post-processing machine such as a folding machine, These are arranged in the running direction of the paper 8.

  The variable printing machine 10 has a configuration similar to that of the conventional printer, and includes a plurality of sets of printing units 3a, 3b, 3c, and 3d, and a paper feeding device 13 that includes an intermittent feeding device 1 that is located upstream and has a loop portion 1a. And a sheet pulling device 14 including the intermittent feeding device 2 having the loop portion 2a located on the downstream side. The flat plate processing machine 11 is disposed upstream of the intermittent feed device 2 on the downstream side.

  For example, the printing units 3a to 3d in the variable printing machine 10 are assumed to have the same configuration as that shown in FIG. 1, and the travel operation of the paper 8 with one rotation of the blanket cylinder 5 in the variable printing machine 10 as one cycle. A diagram showing is shown in FIG.

Of the time T ′ of one cycle in which the blanket cylinder 5 rotates once, T ₂ ′ is a nip time in which the large diameter portion 7 is in contact with the paper 8, and T ₁ ′ is a nip in which the small diameter portion is opposed to the paper 8. Opening time. 'In, _{t 1'} the nip opening time _{T 1} 'and, stop sections _s 5, _{t 2} over _{t 5'} deceleration section _{s 1} over reverse running section _s 2 over ', _{t 3'} speed increasing section _{s 3} 'over Has been taken. At this time, t ₁ ′ + t ₅ + t ₂ ′ + t ₃ = T ₁ ′, and s ₁ ′ + s ₃ ′ = s ₂ ′ as shown in FIG.

The traveling operation of the paper 8 in the nip opening portion by the small diameter portion varies depending on the vertical length of the pattern. For example, in FIG. 1, when the top / bottom length of the pattern is sb shorter than sa, it is necessary to reversely run by the length of (sa)-(sb) at the nip opening portion. Therefore, the reverse traveling section s ₂ ′ becomes larger by that amount and the time t ₅ becomes longer. In this case, however, T ₁ ′ + T ₂ ′ = T ′.

As described above, the sheet 8 traveling by the sheet feeding device 13 and the sheet pulling device 14 is intermittently fed by the printing units 3a to 3d, while the blanket cylinder 5 makes one rotation of the s-a in one rotation of the blanket cylinder 5. Traveling from the upstream intermittent feed device to the downstream intermittent feed device 2 is performed. The sheet 8 for t ₅ between the nip opening of the blanket cylinder 5 is stopped.

Therefore, the platen machine 11 is arranged on the upstream side of the intermittent feeding apparatus 2 on the downstream side in synchronization with the running movement of the sheet 8, the stop sections t ₅ of the sheet 8, flat opener, foil stamping, numbering , Flat plate processing such as engraving. The flat plate processing machine 11 uses a plurality of types according to the purpose of each flat plate processing.

It is a schematic structure explanatory drawing of a variable printing machine. FIG. 6 is a diagram illustrating a sheet running operation in which a sheet does not stop at a nip opening portion. It is a schematic explanatory drawing of the variable printing processing machine which concerns on this invention. FIG. 6 is a diagram illustrating a sheet running operation in which a sheet is stopped at a nip opening portion.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 2 ... Intermittent feeding device, 1a, 2a ... Loop part, 3a, 3b, 3c, 3d ... Printing unit, 4 ... Plate cylinder, 5 ... Blanket cylinder, 6 ... Impression cylinder, 7 ... Blanket, 8 ... Paper, 10 ... Variable printing machine, 11 ... Flat plate processing machine, 13 ... Feeding device, 14 ... Paper drawing device.

Claims (1)

Between a pair of intermittent feeding devices capable of performing forward running and reverse running synchronously, a printing cylinder and an impression cylinder that are arranged with a sheet that is run by the both intermittent feeding devices being sandwiched therebetween And a nip portion having a large diameter for printing on the peripheral surface of the printing cylinder in contact with the paper, and at least one set provided in the circumferential direction with a nip opening portion having a small diameter so as to have a gap between the paper And a flat plate processing machine that applies flat plate processing to paper,
The intermittent feeding operation of the paper by the intermittent feeding device is stopped for a predetermined time when the nip is opened in the printing unit, and the flat board is machined on the paper at the time of stopping by the flat board machine. Variable printing machine.

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