JP2010126313A - Folding machine, printing machine, and printing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fold printed webs after they are cut and superposed. <P>SOLUTION: A folding machine for folding the printed webs W after they are cut and superposed includes: a cutting device 7 for cutting the web W to a sheet S of predetermined length; a superposing device 8 for making the sheet S to a group of sheets S' superposed with previously set predetermined number of sheets while positioning end parts of the sheets S cut by the cutting device 7; a conveying device 9 for conveying the group of sheets S' superposed by the superposing device 8; and a folding device 10 for collectively receiving the group of sheets S' conveyed by the conveying device 9 and folding them. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a folding machine that cuts and overlaps a printed web, and also folds a web printed using a variable printing machine to form a newspaper or the like by using the folding machine. It is about the method.

  For example, a general web offset press for newspapers is composed of a plurality of paper feeding devices, a plurality of printing units, a turn bar device, and a folding machine, and a web is supplied from each paper feeding device to the printing unit. Then, printing is performed on each web, and after a plurality of web traveling routes are changed by the turn bar device, the webs are overlapped in a predetermined order, and then the web is vertically folded by a folding machine. The paper is cut by the length of, and a fold is formed by being horizontally folded, and is discharged.

  There are two types of folding machines in such newspaper offset rotary printing presses, a rotary (blade) folder type and a jaw folder type. The rotary folder type folding machine is provided with a saw cylinder and a folding cylinder facing each other below a triangular plate for vertical folding, and a pair of folding rollers provided below the folding cylinder, below the folding rollers. An impeller for discharging the signature is provided. The saw cylinder is provided with a saw blade on the outer peripheral portion, while the folding cylinder is provided with a saw blade receiver for receiving the saw blade on the outer peripheral portion. Further, the folding cylinder is provided with a needle device and a folding blade at an outer peripheral portion at a predetermined interval in the circumferential direction.

  Therefore, when a plurality of webs stacked in a predetermined order are vertically folded by a triangular plate and then sent to the folding cylinder by various rollers, first, the tip portions are held by the needle device at a predetermined position. In this state, the folding cylinder rotates by a predetermined angle. Next, in the saw cylinder, the saw blade matches the saw blade holder. The web is cut into a sheet shape by the saw blade, and the holding of the web by the needle device is released. Subsequently, the folding blade of the folding cylinder is rotated so that the leading end projects from the circumferential surface of the folding cylinder, and the sheet is peeled off from the circumferential surface of the folding cylinder. On the other hand, a pair of folding rollers sandwich the sheet peeled off from the peripheral surface of the folding cylinder to form a signature, and the signature is sequentially received by the impeller and discharged.

  On the other hand, in the jaw folder type folding machine, a saw cylinder, a folding cylinder, and a saddle cylinder are respectively provided below a triangular plate that performs vertical folding, and an impeller that discharges signatures below the saddle cylinder. Is provided. The saw cylinder is provided with a saw blade on the outer peripheral portion, while the folding cylinder is provided with a saw blade receiver for receiving the saw blade on the outer peripheral portion. Further, the folding cylinder is provided with a needle device and a folding blade at an outer peripheral portion at a predetermined interval in the circumferential direction. Further, the collar body is provided with a gripping device at a predetermined interval in the circumferential direction on the outer peripheral portion.

  Therefore, when a plurality of webs stacked in a predetermined order are vertically folded by a triangular plate and then sent to the folding cylinder by various rollers, first, the tip portions are held by the needle device at a predetermined position. In this state, the folding cylinder rotates by a predetermined angle. Next, in the saw cylinder, the saw blade and the saw blade support coincide with each other, and the web is cut into a sheet by the saw blade, and the holding of the web by the needle device is released. Subsequently, the folding blade of the folding cylinder moves forward, the tip projects from the circumferential surface of the folding cylinder, and the web is peeled off from the circumferential surface of the folding cylinder. On the other hand, a folding device is formed by holding the sheet peeled off from the peripheral surface of the folding cylinder by the clamping device of the folding cylinder, and the folding is sequentially received by the impeller and discharged.

  Examples of the folding machine in such a newspaper offset rotary printing press include those described in Patent Documents 1 and 2 below.

Japanese Patent Application Laid-Open No. 08-230148 Japanese Patent No. 3697694

  By the way, newspapers such as national newspapers with a large number of copies to be delivered can be printed in a short time with the above-described newspaper offset rotary printing press, thereby reducing printing costs and increasing printing efficiency. it can. On the other hand, newspapers in districts that deliver a small number of copies can be printed in a short time by using a newspaper offset rotary press, but it is difficult to depreciate the production cost of printing plates, which increases printing costs. End up. Therefore, it is conceivable to use a printing machine such as an ink jet printer for printing newspapers. However, a series of operations for forming a newspaper by cutting and stacking webs printed by a single ink jet printer and forming a newspaper is difficult with the above-described conventional folding machine.

  SUMMARY An advantage of some aspects of the invention is to provide a folding machine, a printing machine, and a printing method.

  In order to achieve the above-described object, the folding machine of the present invention is a folding machine that cuts a printed web and folds it after being overlapped, and cuts the web into a sheet having a predetermined length, and A stacking device that sets a predetermined number of sheets stacked while positioning an end of the sheet cut by the cutting device, a transport device that transports the sheet group stacked by the stacking device, and And a folding device that collectively receives and folds the sheet group conveyed by the conveying device.

  According to this folding machine, the printed web can be cut into sheets, stacked as a group of sheets, and then folded together. As a result, the present invention can be applied to a variable printing machine that continuously prints different images on a conveyed web, and printing and folding can be performed in a series of lines.

  In addition, the stacking apparatus holds the sheets in a stacked manner until the sheet group is obtained, and the folding apparatus receives and folds the sheet group conveyed by the conveying apparatus at a time. As a result, in the folding apparatus, the sheet group can be folded until the sheet group is formed into a sheet group by the stacking apparatus and the sheet group is conveyed by the conveying apparatus, so that the sheet group can be folded with high folding accuracy. Can do.

  In the folding machine of the present invention, the sheet by the folding device according to a predetermined number of the sheets that are stacked by the stacking device to form the sheet group and a feeding speed of the sheet that is sent to the stacking device. A control unit for controlling the group reception timing is further provided.

  According to such a folding machine, even when the predetermined number of sheets stacked on the stacking apparatus changes according to the printed matter, the sheet group can be smoothly folded in order to properly match the receiving timing of the sheet group by the folding apparatus.

  Further, in the folding machine according to the present invention, the folding device includes a first folding unit that laterally folds the sheet group conveyed by the conveying device, and the sheet group folded by the first folding unit. And a second foldable portion that folds vertically.

  According to this folding machine, it is possible to form a folded paper that is folded horizontally and vertically. As a result, a newspaper can be formed while being applied to a variable printing machine that continuously prints different images on the conveyed web.

  Further, in the folding machine of the present invention, the first folding unit includes a drum unit that is rotatably provided and a peripheral surface of the drum unit that can hold an end of the sheet group conveyed by the conveyance device. And a folding cylinder having a folding blade provided so as to protrude from the peripheral surface of the trunk portion in a manner of forming a transverse fold in the sheet group.

  According to this folding machine, it is possible to cut the printed web into sheets and apply the folding apparatus applied to a general offset rotary printing machine, and then fold the sheets together as a group of sheets.

  Moreover, in the folding machine of this invention, said 2nd folding part is provided with the chopper apparatus which further vertically folds the said sheet group laterally folded by said 1st folding part.

  According to this folding machine, it is possible to cut the printed web into sheets and apply the folding apparatus applied to a general offset rotary printing machine, and then fold the sheets together as a group of sheets.

  In order to achieve the above-described object, in the printing machine of the present invention, a paper feeding device that feeds a web from a web, a printing device that prints different images continuously on the web fed from the paper feeding device, A folding machine that forms a fold by cutting the web printed by the printing apparatus into a predetermined length for each image and folding the web, and the folding machine includes: The folding machine according to any one of the above is applied.

  According to this printing machine, printing and folding can be performed in a series of lines. Moreover, the sheet group can be folded with high folding accuracy.

  In order to achieve the above-described object, in the printing method of the present invention, a step of printing different images continuously on a web to be conveyed, and then, the printed web is subjected to a predetermined length for each image. A step of cutting into sheets, a step of positioning a predetermined number of sheets while positioning an end portion of the sheet, a step of transferring the sheet group, A step of collectively receiving the conveyed sheet group and then folding it to form a fold.

  According to this printing method, printing and folding can be performed in a series of lines. Moreover, the sheet group can be folded with high folding accuracy.

  In the printing method of the present invention, the step of collectively receiving the conveyed sheet group and then folding it to form a fold includes the predetermined number of sheets to be the sheet group and the feeding of the stacked sheets. The method includes a step of determining reception timing of the sheet group according to speed.

  According to this printing method, even when the predetermined number of sheets to be stacked changes according to the printed matter, the sheet group can be smoothly folded in order to properly match the reception timing of the sheet group.

  According to the present invention, the printed web can be cut and overlapped before being folded. As a result, printing and folding can be performed in a series of lines. Moreover, the sheet group can be folded with high folding accuracy.

  Embodiments of a folding machine, a printing machine, and a printing method according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

  First, the printing press will be described. FIG. 1 is a schematic configuration diagram of a printing press according to an embodiment of the present invention.

  A printing machine according to an embodiment of the present invention is a printing machine 1 that performs printing on a roll-shaped web (printing sheet) W as shown in FIG. The printing machine 1 includes a paper feeding device 2, an infeed device 3, a printing device 4, a folding device (folding device) 5, and a paper discharge device 6.

  The paper feeding device 2 has a reel stand on which a plurality of (two in the present embodiment) winding papers (web rolls) are mounted, and the web W drawn out from one winding paper and traveling on the other A web splicing device that can continuously supply the web W by being connected to the web of the web. The infeed device 3 supplies the web W of the paper feeding device 2 to the printing device 4 side.

  In the present embodiment, the printing apparatus 4 includes a front surface printing unit 41 that performs printing on the front surface of the web W and a back surface printing unit 42 that performs printing on the back surface of the web W along the running direction of the web W. It is configured. The front surface printing unit 41 is a printing unit that performs multicolor printing or single color printing on the surface of the web W, and is configured by an ink jet printer as a variable printing machine. Similarly to the front surface printing unit 41, the back surface printing unit 42 is a printing unit that performs multicolor printing or single color printing on the back surface of the web W, and is configured by an ink jet printer as a variable printing machine. Inkjet printers have been applied as variable printers, but any digital printer that can receive and print data created by an editing system as it is can be used. It does not ask the method. Such printing units 41 and 42 can individually perform multicolor printing and single color printing, and can continuously print different images on the web W being conveyed.

  The folding device (folding machine) 5 cuts the web W and vertically and horizontally folds it to a predetermined size to form a fold. Details of the folding device 5 will be described later. The paper discharge device 6 carries out the folded signatures out of the apparatus.

  Accordingly, the web W drawn from the web by the paper feeding device 2 is supplied to the printing device 4 by the infeed device 3, and the printing device 4 performs multicolor printing on the front and back of the web W by the printing units 41 and 42. Or monochrome printing is performed. The printed web W is folded by the folding device 5 and carried out by the paper discharge device 6.

  Next, details of the folding device 5 will be described. FIG. 2 is a schematic configuration diagram of the folding machine according to the embodiment of the present invention.

  The folding device 5 serving as a folding machine cuts the printed web W by the printing device 4 and folds it after being overlapped. The cutting device 7, the stacking device 8, the transport device 9, and the folding device 10.

  The cutting device 7 includes a cutting unit 71 that cuts the web W into a sheet S having a predetermined length, a cutting upstream transport unit 72 that transports the printed web W to the cutting unit 71, and a sheet cut by the cutting unit 71. And a cutting downstream conveyance unit 73 that conveys S.

  The cutting unit 71 includes a saw cylinder 711 and a receiving cylinder 712 provided to face the saw cylinder 711. In the saw cylinder 711 and the receiving cylinder 712, the saw cylinder 711 is disposed on the upper side and the receiving cylinder 712 is disposed on the lower side with the web W being conveyed therebetween. The saw cylinder 711 and the receiving cylinder 712 are provided so as to be rotatable about an axis that is orthogonal to the feed direction R of the web W and is parallel to the web W. Here, the term “orthogonal” refers to a positional relationship that includes not only perfect orthogonality but also orthogonality within the range of intersection, error, and variation.

  The saw body 711 is provided with a saw blade 711a on a circumferential surface formed in a cylindrical shape. The saw blade 711 a is arranged at two positions 180 degrees across the rotation axis of the saw cylinder 711 over the extending direction of the axis of the saw cylinder 711, and the blade tip protrudes from the circumferential surface of the saw cylinder 711. Is provided.

  The receiving cylinder 712 is provided with a saw blade receiver 712 a on a circumferential surface formed in a cylindrical shape having the same diameter as the saw cylinder 711. The saw blade receiver 712a is disposed across the extending direction of the shaft of the receiving cylinder 712 at two positions opposed to each other by 180 degrees across the rotational axis of the receiving cylinder 712.

  The saw cylinder 711 and the receiving cylinder 712 are configured to be able to rotate in synchronization with each other in the opposite directions, and the rotation phases coincide so that the saw blade 711a and the saw blade receiver 712a that move during the rotation face each other. Has been. When the saw blade 711a and the saw blade receiver 712a face each other and match each other, the web W between the saw cylinder 711 and the receiver cylinder 712 is sandwiched between the saw blade 711a and the saw blade receiver 712a and cut. Is done. That is, the saw cylinder 711 and the receiving cylinder 712 can cut the web W at a constant period. In the cutting portion 71 according to the present embodiment, the saw blade 711 a is provided at two locations on the peripheral surface of the saw barrel 711, and the saw blade receiver 712 a is provided at two locations on the peripheral surface of the receiving barrel 712. The web W is cut once per half circumference of the saw cylinder 711 and the receiving cylinder 712. In addition, if the cutting part 71 is the structure by which the saw blade 711a is provided in one place of the surrounding surface of the saw cylinder 711, and the saw blade receiver 712a is provided in one place of the surrounding surface of the receiving cylinder 712, the saw cylinder will be described. The web W is cut once per round of the 711 and the receiving cylinder 712.

  The cutting unit 71 is not limited to the configuration including the saw cylinder 711 and the receiving cylinder 712, and may be any apparatus that can cut the web W being conveyed.

  The cutting upstream conveyance unit 72 is disposed on the upstream side of the cutting unit 71 in the feeding direction R of the printed web W. The cutting upstream conveyance unit 72 includes a pair of conveyors 721 provided so as to sandwich the web W from above and below. Each conveyor 721 has a plurality of pulleys 721a and an endless belt 721b stretched over each pulley 721a, and is configured such that the belt 721b circulates by the rotation of the pulley 721a. The cutting upstream conveying unit 72 is configured such that the belts 721b of the conveyors 721 are rotatable in synchronization with each other in the opposite direction, and conveys the web W between the belts 721b.

  The cutting downstream conveyance unit 73 is disposed on the downstream side of the cutting unit 71 in the feeding direction R of the sheet S cut by the cutting unit 71. The cutting downstream conveyance unit 73 includes a pair of conveyors 731 provided so as to sandwich the sheet S from above and below. Each conveyor 731 has a plurality of pulleys 731a and an endless belt 731b stretched over each pulley 731a, and the belt 731b is circulated by the rotation of the pulley 731a. The cutting downstream conveyance unit 73 is configured such that the belts 731b of the respective conveyors 731 can rotate in synchronization with each other in the opposite directions, and conveys the sheet S between the belts 731b.

  The stacking device 8 is arranged on the downstream side of the cutting downstream transport unit 73 in the feeding direction R of the sheet S by the cutting downstream transport unit 73 of the cutting device 7, and a mounting table 81 on which the sheets S are stacked and mounted. And a positioning unit 82 for positioning the end of the sheet S stacked on the mounting table 81.

  The mounting table 81 has a mounting surface 81a on which the sheet S is mounted. Although not shown in the drawing, the mounting table 81 is configured to be movable in the vertical direction by lifting means. The mounting table 81 receives the sheets S conveyed by the cutting downstream conveying unit 73 of the cutting apparatus 7 on the mounting surface 81a and sequentially stacks them. The placement table 81 can transfer the sheet group S ′ to the transport device 9 by lowering when the number of sheets S reaches a predetermined number. The placing table 8 may be configured to receive the sheet S conveyed by the cutting downstream conveying unit 73 of the cutting apparatus 7 on the placing surface 81a, and gradually stack the sheets S by descending gradually.

  The positioning unit 82 is disposed on the downstream side of the mounting table 81 in the feeding direction R of the sheet S conveyed to the mounting surface 81a. The positioning portion 82 has an abutting surface 82a that extends upward from the placement surface 81a and faces the upstream side in the feeding direction R of the sheet S. Further, the positioning unit 82 is fixed to a frame (not shown) of the folding device 5. The positioning unit 82 abuts the sheet S conveyed to the mounting table 81 by the cutting downstream conveying unit 73 of the cutting apparatus 7 and positions the end of the sheet S. Thereby, the edge part of the sheet | seat S piled up on the mounting surface 81a is arrange | equalized.

  The conveying device 9 conveys a group of sheets S ′ stacked on the overlapping device 8 to the folding device 10 together. The transport device 9 includes a rotating unit 91 and a gripping unit 92 provided on the rotating unit 91.

  The rotating portion 91 is provided to be rotatable about an axis that is orthogonal to the feeding direction R of the sheet S and is parallel to the sheet S. Here, the term “orthogonal” refers to a positional relationship that includes not only perfect orthogonality but also orthogonality within the range of intersection, error, and variation.

  The grip portion 92 is provided in the rotating portion 91 and has a fixed claw fixed to the rotating portion 91 and a movable claw that rotates and moves with respect to the rotating portion 91. When the movable claw moves, the gripper 92 contacts or separates from the fixed claw, that is, the movable claw and the fixed claw are opened and closed. When the gap between the movable claw and the fixed claw is closed, the sheet group S ′ is held by the grip portion 92. On the other hand, when the gap between the movable claw and the fixed claw is opened, the gripping of the sheet group S ′ by the grip portion 92 is released.

  The folding device 10 includes a first folding unit 101 and a second folding unit 102.

  The first folding unit 101 receives the sheet group S ′ conveyed by the conveying device 9 and folds the sheet group S ′ in a direction orthogonal to the feeding direction R of the sheet group S ′. And a rod cylinder 1012 provided to face the folding cylinder 1011. The folding cylinder 1011 and the saddle cylinder 1012 have the folding cylinder 1011 arranged on the upstream side in the feed direction R of the web W, and the folding cylinder 1012 arranged on the downstream side. The folding cylinder 1011 and the saddle cylinder 1012 are provided so as to be rotatable about an axis that is orthogonal to the feeding direction R of the sheet group S ′ and parallel to the sheet group S ′. Here, the term “orthogonal” refers to a positional relationship that includes not only perfect orthogonality but also orthogonality within the range of intersection, error, and variation.

  The folding cylinder 1011 is provided with a holding portion 1011b on the circumferential surface of a rotatable barrel portion 1011a formed in a columnar shape. A plurality of holding parts 1011b are arranged along the extending direction of the axis of the body part 1011a at two positions 180 degrees opposite to each other with the rotation axis of the body part 1011a interposed therebetween. Although not clearly shown in the drawing, the holding portion 1011b is operated in conjunction with the rotation of the folding cylinder 1011 by a cam mechanism, and the sheet is formed by a needle protruding outward from the peripheral surface of the trunk portion 1011a at a predetermined position. While the end portion of the group S ′ can be stabbed and held, the holding of the end portion of the sheet group S ′ can be released by retracting the needle inside the peripheral surface of the body portion 1011a at a predetermined position.

  The folding cylinder 1011 is provided with a folding blade 1011c on the peripheral surface of the trunk 1011a. The holding unit 1011b is arranged at two positions 180 degrees out of phase with the holding unit 1011b and opposed to each other by 180 degrees across the rotation axis of the barrel 1011a, and extends in the extending direction of the axis of the barrel 1011a. ing. Although not shown in the drawing, the folding blade 1011c is operated in conjunction with the rotation of the folding cylinder 1011 by a cam mechanism, and protrudes to the outside of the peripheral surface of the trunk 1011a at a predetermined position. A part (central part) of the group S ′ is pushed outward from the peripheral surface of the body part 1011a to be peeled off, and is separated from the sheet group S ′ by being retracted inside the peripheral surface of the body part 1011a at a predetermined position.

  The saddle drum 1012 is provided with a saddle mechanism 1012b on the peripheral surface of a barrel portion 1012a formed in a cylindrical shape having the same diameter as the folding drum 1011. A plurality of scissors mechanisms 1012b are arranged along the extending direction of the shaft of the trunk portion 1012a at two positions facing each other by 180 degrees across the rotation axis of the trunk portion 1012a.

  The folding cylinder 1011 and the saddle cylinder 1012 are configured to be rotatable in synchronization with each other in the opposite directions, and the rotational phases are matched so that the folding blade 1011c and the saddle mechanism 1012b that move during the rotation face each other. ing. When the folding blade 1011c and the scissor mechanism 1012b face each other and match, the sheet group S ′ held by the holding unit 1011b of the folding cylinder 1011 is pushed by the scissor mechanism 1012b while being pushed out by the folding blade 1011c. It is done. That is, a part (center portion) of the sheet group S ′ pushed out by the folding blade 1011 c is held by the folding mechanism 1012 b and is folded horizontally as a fold. Further, the first folding unit 101 in the present embodiment is provided with folding blades 1011c at two locations on the circumferential surface of the trunk portion 1011a of the folding drum 1011 and at two locations on the circumferential surface of the trunk portion 1012a of the rod barrel 1012. Since the scissors mechanism 1012b is provided, one sheet group S ′ is folded horizontally per half circumference of the folding cylinder 1011 and the saddle cylinder 1012. The first folding unit 101 is provided with a folding blade 1011c at one location on the circumferential surface of the barrel portion 1011a of the folding drum 1011 and a saddle mechanism 1012b at one location on the circumferential surface of the barrel portion 1012a of the saddle barrel 1012. In the case of the configuration, one sheet group S ′ is folded horizontally per one turn of the folding cylinder 1011 and the rod cylinder 1012.

  The second folding unit 102 is configured to vertically fold the sheet group S ′ horizontally folded by the first folding unit 101 in a direction along the feeding direction R of the sheet group S ′ to form a fold. It is configured as a device.

  The chopper device is provided adjacent to the rod body 1012 of the first folding unit 101. In this chopper device, a chopper table 1021 is disposed horizontally. At the position of the chopper table 1021, a pair of conveyors 1022 provided so as to sandwich the horizontally folded sheet group S ′ with the rod cylinder 1012 open from above and below is arranged. Each conveyor 1022 has a plurality of pulleys 1022a and an endless belt 1022b stretched over each pulley 1022a, and is configured such that the belt 1022b circulates as the pulley 1022a rotates. Each conveyor 1022 is configured such that the belts 1022b can rotate in synchronization with each other in opposite directions, and conveys the sheet group S 'between the belts 1022b at the upper surface position of the chopper table 1021.

  The chopper table 1021 is formed with a slit 1021a at a predetermined position along the feeding direction R of the sheet group S '. Further, the chopper table 1021 is provided with a stopper 1021b on the downstream side in the feeding direction R of the sheet group S 'from the slit 1021a. The stopper 1021b defines the folding position of the sheet group S 'when the leading end of the sheet group S' conveyed by each conveyor 1022 comes into contact.

  A chopper blade 1023 is disposed above the slit 1021a. The chopper blade 1023 is formed in a plate shape that can be inserted into the slit 1021a, and pushes the sheet group S ′ into the slit 1021a while being in contact with the central portion in the width direction of the sheet group S ′ that is in contact with the stopper 1021b. It is configured to be movable in the vertical direction by the lifting means that does not. The sheet group S ′ descending after passing through the slit 1021a is formed with a longitudinal fold at the center to form a fold.

  Note that a plurality of the belts 1022b of each conveyor 1022 described above are arranged side by side with a predetermined gap in the width direction of the sheet group S ', and have gaps at positions corresponding to the slits 1021a of the chopper table 1021.

  A pair of folding rollers 1024 are rotatably provided below the chopper table 1021 so as to face the slit 1021a. The folding roller 1024 sandwiches and folds the signature that descends through the slit 1021a by the nip pressure. Further, below the folding roller 1024, a paper discharge conveyor 1025 that receives a signature and sends it to the paper discharge device 6 is provided.

  Therefore, in the folding device (folder) 10, the web W on which different images are continuously printed is cut into a sheet S having a predetermined length for each image by the cutting device 7, and then the sheet S is printed by the overlapping device 8. The sheet group S ′ is formed by stacking a predetermined number of sheets set in advance while positioning the end, and then the sheet group S ′ is transported by the transport device 9, and the transported sheet group S ′ is then transported by the folding device 10. Fold it together and fold it to form a signature.

  By the way, the predetermined number of sheets S stacked on the mounting table 81 is set in advance according to the number of images printed on the web W. The predetermined number is provided in advance between the number of images set in the printing machine 1, the number of cuts in the cutting apparatus 7 (the number of rotations of the saw cylinder 711 and the receiving cylinder 712), and between the cutting apparatus 7 and the stacking apparatus 8. It can be known from a sensor (not shown).

  Further, the number of sheets S that are stacked on the mounting table 81 to become the sheet group S ′ is associated with the number of pages of the printed material. Therefore, when printing the same printed material continuously, the number of sheets S stacked on the mounting table 81 is the same for each printed material, but when printing another printed material, it is stacked on the mounting table 81 according to the number of pages. The number of sheets S to be changed varies.

  On the other hand, the folding cylinder 1011 of the first folding unit 101 that receives the sheet group S ′ stacked on the mounting table 81 from the conveying device 9 is operated in conjunction with the rotation of the folding cylinder 1011 by the cam mechanism, so The sheet group S ′ is received by sticking and holding the end of the sheet group S ′ with a needle protruding outward from the peripheral surface of the body 1011 a at a predetermined position. That is, the predetermined position of the rotation is a position where the sheet group S ′ is received from the conveying device 9.

  In such a configuration, when the number of sheets S stacked on the mounting table 81 changes according to the printed matter, the time until the sheet S becomes a predetermined number of sheet groups S ′ changes. In this case, in the folding cylinder 1011, a predetermined rotation position for receiving the sheet group S ′ from the conveying device 9 is determined, so that the rotation speed, that is, the folding, is changed according to the change in the number of sheets S stacked on the mounting table 81. It is necessary to change the timing at which the tatami mat apparatus 10 receives the sheet group S ′ from the transport apparatus 9.

  Therefore, in the present embodiment, the control unit 100 controls the rotation speed of the folding cylinder 1011 according to the change in the number of sheets S stacked on the mounting table 81. The control unit 100 is configured by a microcomputer or the like. In the control unit 100, the number of images set in the printing machine 1, the number of rotations of the saw cylinder 711 and the receiving cylinder 712 in the cutting apparatus 7, and a sensor (not shown) provided between the cutting apparatus 7 and the stacking apparatus 8 are illustrated. Etc.), a predetermined number of sheets S to be stacked on the mounting table 81 is input. The control unit 100 also includes a printing speed in the printing apparatus 2, a rotation speed of the saw cylinder 711 and the receiving cylinder 712 corresponding to the cutting speed of the cutting apparatus 7, and a conveyance speed of the cutting downstream conveyance section 73 in the cutting apparatus 7. From the above, the feeding speed of the sheet S to be sent to the mounting table 81 is input. In the control unit 100, the rotational speed information of the folding cylinder 1011 determined by the ratio between the sheet S feeding speed and the predetermined number of sheets S is stored in advance, and the rotational speed is based on the rotational speed information. The number of rotations of the motor M that rotationally drives the folding cylinder 1011 is controlled. Note that the saddle cylinder 1012 is driven by the motor M of the folding cylinder 1011 so that the rotation is synchronized with the folding cylinder 1011. Therefore, by controlling the rotation speed of the motor M of the folding cylinder 1011, the rotation speed of the rod cylinder 1012 synchronized with the folding cylinder 1011 can also be controlled.

  Next, detailed operation of the folding device 5 will be described. It is an operation | movement figure of FIGS. 3-11 folding machines. Here, operation | movement of the stacking apparatus 8, the conveying apparatus 9, and the 1st folding part 101 in the folding apparatus 5 is demonstrated.

  As shown in FIG. 3, in the stacking device 8, the mounting table 81 is in a raised position, and the sheets S cut by the cutting device 7 are sent to the mounting surface 81 a of the mounting table 81 one by one. It is piled up while being positioned by abutting against the abutting surface 82a of the determining portion 82. At this time, the folding cylinder 1011 and the rod cylinder 1012 of the first folding unit 101 are both rotated in synchronization.

  As shown in FIG. 4, when the number of sheets S stacked on the mounting table 81 reaches a predetermined number, the mounting table 81 is lowered to the position of the conveying device 9. Next, the sheet group S ′ is grasped by the grip portion 92 of the transport device 9.

  As shown in FIG. 5, the end portion of the sheet group S ′ held by the grip portion 92 is rotated by the rotation portion 91 of the conveying device 9 so that the circumferential surface of the body portion 1011 a of the folding cylinder 1011 of the first folding portion 101. To approach. In synchronism with the rotation of the rotation unit 91 of the conveying device 9, the holding unit 1011b of the folding cylinder 1011 is disposed at the end position of the sheet group S '. In this predetermined position, the holding portion 1011b stabs and holds the end portion of the sheet group S ′ with a needle protruding outward from the peripheral surface of the body portion 1011a. At this time, the mounting table 81 where the sheet group S ′ has been removed rises.

  As shown in FIGS. 6 to 9, as the folding cylinder 1011 rotates, the sheet group S ′ held by the holding unit 1011 b is fed so as to be wound around the circumferential surface of the cylinder 1011 a. Meanwhile, as shown in FIG. 6, the sheet S cut by the cutting device 7 is superimposed on the elevated mounting table 81 while being positioned. As shown in FIG. 7, when the number of sheets S stacked on the mounting table 81 reaches a predetermined number, the mounting table 81 is lowered to the position of the transport device 9, and the grip portion 92 of the transport device 9. To grasp the sheet group S ′. Further, as shown in FIG. 8, the rotation of the rotation unit 91 of the conveying device 9 causes the end of the sheet group S ′ held by the gripping unit 92 to be moved to the body 1011 a of the folding cylinder 1011 of the first folding unit 101. The end portion of the sheet group S ′ is held by another holding portion 1011b of the folding cylinder 1011 so as to approach the peripheral surface. Then, the mounting table 81 in which the sheet group S ′ has been removed rises. As described above, in the folding device 5 of the present embodiment, the sheet group S ′ on which the cut sheets S are sequentially stacked is conveyed to the folding cylinder 1011 and is held by the folding cylinder 1011.

  As shown in FIG. 10, when the folding blade 1011c and the saddle mechanism 1012b reach a predetermined position by the synchronous rotation of the folding cylinder 1011 and the saddle cylinder 1012, the folding blade 1011c is placed outside the peripheral surface of the trunk portion 1011a. Protruding. Then, a part (center part) of the sheet group S ′ is pushed out by the folding mechanism 1012 b while being pushed out by the folding blade 1011 c. As a result, a part (center portion) of the sheet group S ′ pushed out by the folding blade 1011 c is held by the folding mechanism 1012 b and is folded horizontally as a fold. At this time, the holding unit 1011b releases the holding of the end portion of the sheet group S ′ by retracting the needle inside the circumferential surface of the body unit 1011a.

  As shown in FIG. 11, the sheet group S ′ is fed in a state of being gripped by the saddle mechanism 1012 b by the rotation of the saddle drum 1012. Then, the sheet group S ′ is opened by the saddle mechanism 1012b at a predetermined position where the sheet group S ′ reaches the position close to the conveyor 1022 of the second folding unit 102. Delivered to the tatami mat unit 102. In the second folding unit 102, as described above, the sheet group S 'is further folded vertically to form a fold.

  In the operation of the folding device 5 described above, the mounting table 81 of the stacking device 8 is configured to be movable up and down, and when the sheet S stacked on the mounting surface 81a reaches a predetermined number of sheets, the transport device Although it falls to the position of 9, it is not limited to this. For example, when the mounting table 81 is fixed, the conveying device 9 is disposed at a position where the sheet group S ′ is gripped, and the sheet S stacked on the mounting surface 81a reaches a predetermined number of sheets, the positioning is determined. The sheet group S ′ may be grasped by the grip portion 92 while the portion 82 is retracted.

  As described above, in the folding device (folder) 5 of the present embodiment, the cutting device 7 that cuts the printed web W into the sheet S having a predetermined length, and the sheet S that has been cut by the cutting device 7. A stacking device 8 that sets a predetermined number of sheets stacked while positioning the end portion, a transporting device 9 that transports the sheet group S ′ stacked by the stacking device 8, and transported by the transporting device 9 And a folding device 10 that collectively receives and folds the sheet group S ′.

  According to the folding device 5, the printed web W can be cut into sheets S and stacked as a sheet group S ′ and then folded together. As a result, it can be applied to a variable printing machine that continuously prints different images on the conveyed web W, and printing and folding can be performed in a series of lines.

  In addition, the stacking device 8 holds the sheets S in a stacked manner until the sheet group S ′ is obtained, and the folding device 10 receives and folds the sheet group S ′ conveyed by the conveying device 9 at a time. For this reason, in the folding device 10, the sheet group S ′ is folded by the stacking device 8 and the sheet group S ′ can be folded until the sheet group S ′ is conveyed by the conveying device 9. It becomes possible to fold the sheet group S ′ with high folding accuracy.

  Further, in the folding device 5 of the present embodiment, the folding device according to the predetermined number of sheets S that are stacked by the stacking device 8 to form the sheet group S ′ and the feeding speed of the sheet S that is sent to the stacking device 8. 10 further includes a control unit 100 that controls the reception timing of the sheet group S ′ by 10.

  According to the folding device 5, even when the number of sheets S stacked on the mounting table 81 changes according to the printed matter, the sheet group S ′ can be appropriately matched with the reception timing of the sheet group S ′ by the folding device 10. A smooth folding operation can be performed.

  Further, in the folding device 5 of the present embodiment, the folding device 10 is folded by the first folding unit 101 that horizontally folds the sheet group S ′ conveyed by the conveying device 9 and the first folding unit 101. And a second folding unit 102 that further vertically folds the sheet group S ′.

  According to the folding device 5, it is possible to form a folded paper that is folded horizontally and vertically. As a result, it is possible to form a newspaper while being applied to a variable printing machine that continuously prints different images on the web W being conveyed.

  Further, in the folding device 5 of the present embodiment, the first folding unit 101 has a body 1011a that is rotatably provided and a body that can hold an end of the sheet group S ′ that is conveyed by the conveying device 9. A folding cylinder having a holding part 1011b provided on the peripheral surface of the part 1011a and a folding blade 1011c provided so as to protrude from the peripheral surface of the cylindrical part 1011a in a manner of forming a lateral fold in the sheet group S ′. 1011.

  In the folding device 5 of the present embodiment, the second folding unit 102 includes a chopper device that further vertically folds the sheet group S ′ that is horizontally folded by the first folding unit 101.

  According to the folding device 5, the printed web W is cut into the sheet S while being applied to a general offset rotary printing press, and after being stacked as the sheet group S ′, collectively. It can be folded. Note that the folding device 5 may be configured by only the first folding unit 101 or only the second folding unit 102. Furthermore, a chopper device may be applied to the first folding part, and a folding cylinder may be applied to the second folding part.

  Further, in the printing machine 1 according to the present embodiment, the paper feeding device 2 that supplies the web W from the web, the printing device 4 that continuously prints different images on the web W fed out from the paper feeding device 2, and printing. The folding device (folding machine) 5 is applied in such a manner that the web W printed by the device 4 is cut into a predetermined length for each image and folded to form a fold.

  According to the printing machine 1, printing and folding can be performed in a series of lines. In addition, the sheet group S ′ can be folded with high folding accuracy.

  Further, in the printing method according to the present embodiment, the step of printing different images continuously on the conveyed web W and the web W on which printing has been performed next are cut into sheets S having a predetermined length for each image. A step, a step of positioning the end portion of the sheet S, and a sheet group S ′ in which a predetermined number of sheets are stacked in advance, a step of conveying the sheet group S ′, and a sheet conveyed next And receiving the group S ′ in a lump and then folding it to form a fold.

  According to such a printing method, printing and folding can be performed in a series of lines. In addition, the sheet group S ′ can be folded with high folding accuracy.

  In the printing method of the present embodiment, the step of collectively receiving the conveyed sheet group S ′ and then folding the sheet group S ′ is overlapped with a predetermined number of sheets S to be the sheet group S ′. A step of determining the reception timing of the sheet group S ′ according to the feeding speed of the sheet S is included.

  According to this printing method, even when the predetermined number of sheets S to be stacked changes according to the printed matter, the sheet group S ′ can be smoothly folded in order to properly match the receiving timing of the sheet group S ′. become.

  As described above, the folding machine, the printing machine, and the printing method according to the present invention are suitable for folding a printed web after it is cut and stacked.

1 is a schematic configuration diagram of a printing machine according to an embodiment of the present invention. It is a schematic block diagram of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention. It is an operation | movement figure of the folding machine concerning embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printing machine 2 Paper feeder 3 In-feed apparatus 4 Printing apparatus 41, 42 Printing unit 5 Folding device (folding machine)
REFERENCE SIGNS LIST 6 Paper discharge device 7 Cutting device 71 Cutting portion 711 Saw cylinder 711a Saw blade 712 Receiving cylinder 712a Saw blade receiver 72 Cutting upstream conveying portion 73 Cutting downstream conveying portion 8 Stacking device 81 Mounting table 81a Mounting surface 82 Positioning portion 82a Abutting surface DESCRIPTION OF SYMBOLS 9 Conveying device 91 Rotating part 92 Gripping part 10 Folding device 100 Control part 101 First folding part 1011 Folding cylinder 1011a Body part 1011c Folding blade 1011b Holding part 1012 Body part 1012a Body part 1012b Reed mechanism 102 Second folding part ( Chopper device)
1021 Chopper table 1021a Slit 1021b Stopper 1022 Conveyor 1023 Chopper blade 1024 Folding roller 1025 Discharge conveyor R Feeding direction W Web S Sheet S 'Sheet group M Motor

Claims (8)

A folding machine that cuts the printed web and folds it over
A cutting device for cutting the web into a sheet having a predetermined length;
A stacking device that forms a sheet group in which a predetermined number of preset sheets are stacked while positioning an end portion of the sheet cut by the cutting device;
A transport device for transporting the sheet group stacked by the stacking device;
A folding device for collectively receiving and folding the group of sheets conveyed by the conveying device;
A folding machine comprising:   A control unit that controls reception timing of the sheet group by the folding device according to a predetermined number of the sheets that are stacked by the stacking device to form the sheet group and a feeding speed of the sheet that is fed to the stacking device. The folding machine according to claim 1, further comprising: The folding device is
A first folding unit that folds the sheet group conveyed by the conveying device;
A second folding section for further vertically folding the sheet group folded by the first folding section;
The folding machine according to claim 1, further comprising:   The first folding unit includes a drum unit rotatably provided, a holding unit provided on a circumferential surface of the drum unit so as to hold an end of the sheet group conveyed by the conveyance device, The folding machine according to claim 3, further comprising: a folding cylinder having a folding blade provided so as to protrude from a circumferential surface of the trunk part in a form in which a lateral fold is formed in the sheet group.   5. The folding machine according to claim 3, wherein the second folding unit includes a chopper device that further vertically folds the sheet group that is horizontally folded by the first folding unit. A paper feeding device for feeding a web from a web,
A printing device for printing different images continuously on the web fed from the paper feeding device;
A folding machine for forming a fold by cutting the web printed by the printing device into a predetermined length for each image and folding the web;
A printing press comprising:
The printing machine according to any one of claims 1 to 5, wherein the folding machine is applied to the folding machine. Printing different images in succession on the web being conveyed;
Next, a step of cutting the printed web into a sheet having a predetermined length for each image;
Next, a step of setting a predetermined number of sheets stacked while positioning the end of the sheet,
Next, a step of conveying the sheet group,
Next, a step of forming a fold by folding the received sheet group in a batch,
A printing method comprising: The process of forming a fold by folding the received group of sheets in a batch,
The printing method according to claim 7, further comprising a step of determining a reception timing of the sheet group according to a predetermined number of the sheets to be the sheet group and a feeding speed of the stacked sheets.

Images