JP2011046453A - Sheet conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adequately reduce the speed of a sheet to be conveyed in a sheet conveying device. <P>SOLUTION: A sheet conveying device includes a high-speed conveyor 61 capable of conveying signatures S at a high speed, a low-speed conveyor 62 capable of receiving the signatures S to be conveyed by the high-speed conveyor 61 and conveying them at a lower speed than that of the high-speed conveyor 61, a first holding member 63 for holding fore ends of the signatures S transferred from the high-speed conveyor 61 to the low-speed conveyor 62, a second holding member 64 which is located at the upstream side in the conveying direction of the signatures S from the first holding member 63 to hold rear ends of the signatures S transferred from the high-speed conveyor 61 to the low-speed conveyor 62, and a timing adjusting means 65 for adjusting the holding timing of the signatures S by the first holding member 63. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sheet conveying apparatus capable of decelerating the speed of sheets sequentially conveyed from an upstream side to a downstream side of a sheet conveying path from a high speed to a low speed.

  In general, an offset rotary printing press uses continuous paper (web) supplied from a paper feeder as printing paper, prints with the printing device, and then folds the web vertically with a former in a folding machine. To make a compromise. Then, by decelerating the conveying speed of the signatures that are continuously conveyed from a high speed to a low speed, the signatures are partially overlapped and discharged by a paper discharge device.

  Examples of such a sheet conveying apparatus include those described in Patent Documents 1 and 2 below. The sheet take-out device described in Patent Document 1 conveys a sheet sandwiched between an upper conveyor and a lower conveyor of the first conveyor, and pushes down when the sheet is transferred from the first conveyor to the second conveyor. The rear end of the sheet transferred by the member is pushed down, and the leading end of the subsequent sheet transferred by the paper pressing member is pressed from above.

  In addition, the reduction device for a rotary printing press sheeter described in Patent Document 2 is provided with a speed reduction roll on a frame via a swing arm, and the speed reduction roll can be reduced by the speed reduction roll. The adjusting mechanism capable of adjusting the rolling contact pressure is constituted by a spring expansion / contraction mechanism provided between the frame side and the swing arm.

Japanese Patent No. 3786263 Japanese Patent No. 2769999

  In a printing machine, the types (size, thickness, rigidity, number of sheets, etc.) of sheets conveyed by the printing medium, that is, weights are different. That is, if the signature is a sheet of paper, the weight is light, while if the signature is a sheet in which a predetermined number of signatures are stacked, the weight is heavy. In patent document 1 mentioned above, when a sheet | seat transfers to a 2nd conveyance conveyor from a 1st conveyance conveyor, it is decelerating by hold | suppressing the front-end | tip part and rear end part of a sheet | seat with a pressing member and a paper pressing member. In this case, when the weight of the sheet increases, the pressing force of the sheet by the pressing member or the paper pressing member is insufficient, and it is difficult to decelerate to an appropriate speed.

  On the other hand, in Patent Document 2, the rolling contact pressure of the speed reduction roll with respect to the cut sheet can be adjusted by a spring expansion / contraction mechanism. Specifically, the rolling contact pressure of the speed reduction roll with respect to the cut sheet is adjusted by adjusting the pressing force of the spring by rotating the rotation knob with the notch. However, when the weight of the sheet changes slightly, it is difficult to adjust the rolling contact pressure of the speed reduction roll with high accuracy, and the adjustment work becomes difficult. If the accuracy of the rolling contact pressure of the speed reduction roll is lowered, the cut sheet cannot be appropriately decelerated, and the cut sheet may be damaged.

  SUMMARY An advantage of some aspects of the invention is to provide a sheet conveying apparatus that can appropriately reduce the speed of a conveyed sheet.

  In order to achieve the above object, a sheet conveying apparatus of the present invention is capable of receiving a sheet conveyed by the high-speed conveying conveyor at a lower speed than the high-speed conveying conveyor upon receiving a sheet conveyed by the high-speed conveying conveyor. A low-speed conveyor, a first pressing member that holds the leading edge of the sheet transferred from the high-speed conveyor to the low-speed conveyor, and the high-speed conveyance that is positioned upstream of the first pressing member in the sheet conveying direction. A second presser member for pressing a rear end portion of the sheet transferred from the conveyor to the low-speed transfer conveyor, and a presser timing adjustment unit capable of adjusting a presser timing of the sheet by the first presser member or the second presser member. It is characterized by comprising.

  In the sheet transport apparatus of the present invention, the high-speed transport conveyor includes an upper high-speed transport conveyor and a lower high-speed transport conveyor that can sandwich and transport sheets from above and below, and the lower high-speed transport conveyor is the upper high-speed transport conveyor. The low-speed conveyor is disposed opposite to the upstream portion, the low-speed conveyor is disposed opposite to the downstream portion of the upper high-speed conveyor, and the first pressing member and the second pressing member are downstream of the upper high-speed conveyor. It corresponds to a part, and is arrange | positioned facing the upstream part of the said low-speed conveyance conveyor.

  In the sheet conveying apparatus of the present invention, the presser timing adjusting unit includes a position adjusting unit capable of adjusting a relative position between the first presser member and the second presser member.

  In the sheet conveying apparatus of the present invention, the position adjusting unit is capable of adjusting the position of the first pressing member along the sheet conveying direction.

  In the sheet conveying apparatus of the present invention, the first pressing member is rotatable and has a brake roller for pressing the upper surface of the sheet by its own weight.

  In the sheet conveying apparatus of the present invention, the low-speed conveying conveyor has a plurality of low-speed belts that are movable in the sheet conveying direction and arranged at predetermined intervals in the sheet width direction, and the brake roller A plurality of the low-speed belts are provided opposite to each other above the plurality of low-speed belts, and the position adjusting means has roller moving means for moving the plurality of brake rollers.

  In the sheet conveying apparatus of the present invention, the roller moving means has a support shaft that is disposed in the width direction of the sheet and supports the plurality of brake rollers, and the plurality of the plurality of roller moving means is configured to rotate or slide the support shaft. The brake roller can be moved integrally.

  In the sheet conveying apparatus of the present invention, the roller moving means is capable of independently rotating or sliding at each end in the width direction of the support shaft.

  In the sheet conveying apparatus of the present invention, the roller moving means includes a support shaft whose end portions in the axial direction are rotatably supported by the left and right frames, and a support whose base end portion is fixed to the support shaft. It has an arm, a support lever whose base end portion is rotatably connected to the tip end portion of the support arm, and the brake roller rotatably connected to the tip end portion of the support lever.

  In the sheet conveying apparatus of the present invention, at least one end of the support shaft passes through the frame, and an adjustment handle is attached to the end of the support shaft outside the frame, and the support shaft Is provided with a locking means for preventing rotation of the frame with respect to the frame.

  The sheet conveying apparatus according to the present invention is characterized in that an adjustment scale for measuring a rotation amount of the support shaft by the adjustment handle is provided.

  In the sheet conveying apparatus according to the aspect of the invention, the roller moving unit includes a support shaft that is disposed in the width direction of the sheet and supports the plurality of brake rollers, and the plurality of brake rollers are independent of the support shaft. It is characterized by being movable.

  In the sheet conveying apparatus of the present invention, the second pressing member can be driven and rotated at a peripheral speed slower than that of the high-speed conveying conveyor, and the upper surface of the sheet is covered with a brush provided in a predetermined region in the circumferential direction of the outer peripheral surface. It has a brush roller that can be pressed.

  In the sheet conveying apparatus of the present invention, the presser timing adjustment means includes brush phase adjustment means capable of adjusting the phase of the brush in the brush roller.

  In the sheet conveying apparatus of the present invention, the presser timing adjusting unit includes a drive control unit capable of automatically adjusting a sheet presser timing by the first presser member or the second presser member. The pressing timing by the pressing members is automatically adjusted based on the set sheet data and / or print data.

  In the sheet conveying apparatus of the present invention, the presser timing adjusting unit includes a drive control unit capable of automatically adjusting a presser timing of the sheet by the first presser member or the second presser member, the first presser member, and the second presser member. A displacement detecting means for detecting a displacement of the sheet conveyed by the low-speed conveyor after passing through the pressing member, and the drive control means is configured to detect the pressing timing of each pressing member based on the detection result of the displacement detecting means. It is characterized by automatic adjustment.

  According to the sheet conveying apparatus of the present invention, the high-speed conveying conveyor, the low-speed conveying conveyor, the first pressing member that presses the leading end of the sheet transferred to the low-speed conveying conveyor, and the trailing edge of the sheet transferred to the low-speed conveying conveyor A second presser member that presses the portion, and presser timing adjustment means that can adjust the press timing of the sheet by the first presser member or the second presser member. Therefore, the speed of the conveyed sheet is adjusted appropriately by adjusting the timing of pressing the sheet by the first pressing member or the second pressing member according to the sheet conveying state such as the paper quality, thickness, and number of sheets to be conveyed. Can slow down.

  According to the sheet conveying apparatus of the present invention, as the high-speed conveying conveyor, the upper and lower high-speed conveying conveyors that can sandwich and convey the sheet are provided, the lower high-speed conveying conveyor is opposed to the upstream portion of the upper high-speed conveying conveyor, and the low-speed conveying is performed. Since the conveyor is opposed to the downstream portion of the upper high-speed conveyance conveyor, the first pressing member and the second holding member are associated with the downstream portion of the upper high-speed conveyance conveyor, and are opposed to the upstream portion of the low-speed conveyance conveyor. The sheet transferred to the low speed conveyor can be appropriately decelerated on the low speed conveyor by the first pressing member and the second pressing member.

  According to the sheet conveying apparatus of the present invention, since the position adjusting means capable of adjusting the relative position between the first presser member and the second presser member is provided as the presser timing adjusting means, the relative relationship between the first presser member and the second presser member is provided. When the position is changed, the timing for pressing the leading end portion of the sheet or the trailing end portion of the sheet is changed, and the speed can always be reduced to an appropriate speed even if the conveyance state of the sheet changes.

  According to the sheet conveying apparatus of the present invention, since the position adjusting unit can adjust the position of the first pressing member along the sheet conveying direction, the first pressing member is moved closer to or away from the second pressing member. As a result, the timing for pressing the front end of the sheet is adjusted, and the sheet can be decelerated to an appropriate speed according to the conveyance state of the sheet.

  According to the sheet conveying apparatus of the present invention, the first pressing member is provided with the brake roller that is rotatable and presses the upper surface of the sheet by its own weight. The sheet is decelerated by its own weight, and at this time, the brake roller rotates, so that damage to the sheet can be prevented.

  According to the sheet conveying apparatus of the present invention, a plurality of low-speed belts are provided as low-speed conveyors, a plurality of brake rollers are provided above the plurality of low-speed belts, and a plurality of brake rollers are moved as position adjusting means. Since the roller moving means is provided, the roller moving means adjusts the brake roller along the moving direction of the low-speed belt, and the configuration of the roller moving means can be simplified.

  According to the sheet conveying apparatus of the present invention, the support shaft that is disposed in the width direction of the sheet and supports the plurality of brake rollers is provided, and the roller moving unit rotates or slides the support shaft, thereby the plurality of brake rollers. Since the plurality of brake rollers can be moved integrally, the sheet pressing timing by each brake roller can be adjusted at the same time, and the workability of the adjustment work can be improved. .

  According to the sheet conveying apparatus of the present invention, the roller moving means can independently rotate or slide each end portion in the width direction of the support shaft, and therefore, via the support shaft according to the state in the width direction of the sheet. By making the adjustment amount of the brake roller different, the sheet can be decelerated to an appropriate speed according to the conveyance state of the sheet.

  According to the sheet conveying apparatus of the present invention, as the roller moving means, the support shaft rotatably supported by the left and right frames, the support arm fixed to the support shaft, and the tip of the support arm are freely rotatable. And a brake roller rotatably connected to the tip of the support lever, the position of the brake roller can be adjusted simply by rotating the support shaft. Workability can be improved.

  According to the sheet conveying apparatus of the present invention, the end of the support shaft passes through the frame, and the adjustment handle is attached to the end of the support shaft outside the frame, and the support shaft cannot be rotated with respect to the frame. Thus, even when the sheet is being conveyed, the position of the brake roller can be adjusted by the adjustment handle, and the workability of the adjustment work can be improved.

  According to the sheet conveying apparatus of the present invention, since the adjustment scale for measuring the rotation amount of the support shaft by the adjustment handle is provided, the position of the brake roller can be adjusted with high accuracy.

  According to the sheet conveying apparatus of the present invention, the support shaft disposed in the width direction of the sheet and supporting the plurality of brake rollers is provided, and the roller moving means moves the plurality of brake rollers independently with respect to the support shaft. Therefore, when a plurality of types of sheets are conveyed in the axial direction of the support shaft, the brake roller corresponding to each sheet is independently moved, so that each brake is The position of the roller can be adjusted with high accuracy.

  According to the sheet conveying apparatus of the present invention, the second pressing member can be driven and rotated at a peripheral speed slower than that of the high-speed conveying conveyor, and the upper surface of the sheet is covered with a brush provided in a predetermined region in the circumferential direction of the outer peripheral surface. Since the pressing brush roller is provided, the trailing edge of the sheet conveyed by the brush roller can be pressed at an appropriate timing.

  According to the sheet conveying apparatus of the present invention, since the brush phase adjusting means capable of adjusting the phase of the brush in the brush roller is provided as the press timing adjusting means, the trailing edge of the conveyed sheet can be adjusted by adjusting the brush phase. The sheet can be held at an optimal timing and the sheet can be decelerated to an appropriate speed.

  According to the sheet conveying apparatus of the present invention, the drive control unit as the presser timing adjusting unit automatically adjusts the presser timing by each presser member based on preset sheet data and print data. Even if changes, the conveyed sheet can be always pressed at an appropriate timing.

  According to the sheet conveying apparatus of the present invention, the deviation detecting means for detecting the deviation of the sheet conveyed by the low-speed conveying conveyor after passing through the first pressing member and the second pressing member is provided, and the drive control means is the deviation detecting means. Since the press timing of each presser member is automatically adjusted based on the detection result, the proper press timing by the presser member is automatically set based on the sheet transport state after deceleration, thereby improving the transport accuracy. In addition, the workability of the adjustment work can be improved.

FIG. 1 is a schematic diagram illustrating a sheet conveying apparatus according to a first embodiment of the invention. FIG. 2 is a plan view showing the arrangement of brake rollers in the sheet conveying apparatus of the present embodiment. FIG. 3 is a schematic diagram illustrating an adjustment handle for a brake roller in the sheet conveying apparatus according to the first exemplary embodiment. FIG. 4 is a schematic diagram illustrating a brake roller in the sheet conveying apparatus according to the first exemplary embodiment. FIG. 5 is a plan view illustrating the arrangement of the brush rollers in the sheet conveying apparatus according to the first exemplary embodiment. FIG. 6 is a schematic configuration diagram illustrating an offset rotary printing press to which the sheet conveying apparatus according to the first exemplary embodiment is applied. FIG. 7 is a schematic diagram illustrating a folder to which the sheet conveying apparatus according to the first exemplary embodiment is applied. FIG. 8 is a schematic diagram illustrating a sheet conveying apparatus according to the second embodiment of the present invention.

  Exemplary embodiments of a sheet conveying apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, this invention is not limited by this Example.

  1 is a schematic diagram illustrating a sheet conveying apparatus according to a first embodiment of the present invention, FIG. 2 is a plan view illustrating an arrangement of brake rollers in the sheet conveying apparatus of the present embodiment, and FIG. 3 is a sheet according to the first embodiment. FIG. 4 is a schematic diagram illustrating a brake roller in the sheet conveying apparatus according to the first exemplary embodiment, and FIG. 5 illustrates an arrangement of brush rollers in the sheet conveying apparatus according to the first exemplary embodiment. FIG. 6 is a schematic configuration diagram illustrating an offset rotary printing press to which the sheet conveying apparatus of the first embodiment is applied. FIG. 7 is a schematic diagram illustrating a folding machine to which the sheet conveying apparatus of the first embodiment is applied. is there.

  The printing press of Example 1 is a commercial rotary offset printing press, and as shown in FIG. 6, a paper feeding device 11, an infeed device 12, a printing device 13, a drying device 14, and a cooling device 15. And a web pass device 16, a folding device 17, and a paper discharge device 18.

  The paper feeding device 11 has a reel stand on which two winding bodies (web rolls) are mounted, and the web W that has been drawn out of one winding body and travels is transferred to the other winding body. By connecting to the web W, the web W can be continuously supplied. The infeed device 12 supplies the web W of the paper feeding device 11 to the printing device 13 side. The printing apparatus 13 includes four printing units 21, 22, 23, and 24 for four ink colors, ie, Cyan, Magenta, Yellow, and Black, along the web running direction. Are arranged side by side. The drying device 14 is for drying the ink on the web W printed by the printing device 13, and the cooling device 15 is suitable for the web W that stores excess heat after drying in the drying device 14. It cools to a certain temperature. The web pass device 16 conveys the dried and cooled web W, and the folding device 17 cuts the web W vertically and then cuts it to form a signature S folded into a predetermined size. The paper discharge device 18 carries out the folded signature S out of the apparatus.

  Accordingly, the roll-shaped web W is pulled out from the winding body by the paper feeding device 11 and is supplied to the printing device 13 by the infeed device 12, and in this printing device 13, the printing units 21, 22, 23, 24 Multicolor printing is applied. Then, the printed web W is dried by the drying device 14, cooled by the cooling device 15, and then the signature S is created by the folding device 17 conveyed through the web pass device 16. It is carried out.

  Here, the folding device 17 and the paper discharge device 18 will be described in detail. In the folding device 17 and the paper discharge device 18, as shown in FIG. 7, a former (triangular plate) 31 vertically folds the web W to be conveyed along the conveyance direction. The path changing roller 32 is disposed, and the two web transport paths K1 and K2 are set to branch from the path changing roller 32. That is, an impeller side paper discharge unit 33 that discharges paper by an impeller is disposed on one web conveyance path K1, and a stream side paper discharge unit 34 that performs stream discharge on the other web conveyance path K2. Is arranged.

  Accordingly, the web W vertically folded by the former 31 is transported to the web transport path K1 via the path changing roller 32 and is configured to be introduced into the impeller-side paper discharge unit 33, and via the path changing roller 32. Thus, the sheet is conveyed to the web conveyance path K2 and can be introduced into the stream-side paper discharge unit 34. In this case, the folding device 17 can selectively use the impeller side paper discharge unit 33 and the stream side paper discharge unit 34 in the paper discharge device 18 as necessary.

  A pair of nipping rollers 35 is provided on the downstream side of the path changing roller 32 in the impeller side paper discharge unit 33 disposed in the web conveyance path K1. A gripping cylinder 36 and a folding cylinder 37 are disposed on the downstream side of the pair of nipping rollers 35 so as to face each other with the web conveyance path K1 interposed therebetween. In this case, the holding cylinder 36 is disposed on the left side in FIG. 7 with the web conveyance path K1 interposed therebetween, and the folding cylinder 37 is disposed on the right side in FIG. 7 with the web conveyance path K1 interposed therebetween. The holding cylinder 36 and the folding cylinder 37 are set to have the same diameter.

  A saw blade (not shown) is provided on the peripheral surface of the folding cylinder 37, and the web W vertically folded by the saw blade can be cut to a predetermined length. The folding cylinder 37 is provided with a needle device (not shown) on its peripheral surface. The needle device operates in conjunction with the rotation of the folding cylinder 37 and projects the needle outward at a predetermined position. Thus, while holding the leading end of the cut web W (folded sheet S) in the conveyance direction, the holding of the leading end of the web W (folded sheet S) is released by returning the needle at a predetermined position. Can do. Further, the folding drum 37 is provided with an insertion blade (not shown) on its peripheral surface, and the cutting web W (folding sheet S) is projected in the conveying direction by protruding the insertion blade outward at a predetermined position. Can be folded horizontally at the center.

  On the other hand, the holding cylinder 36 is provided with a saw blade receiver (not shown) on its peripheral surface, and the saw blade of the folding cylinder 37 can be received by the saw blade receiver. Further, the holding cylinder 36 is provided with a holding device (not shown) on its peripheral surface. This holding apparatus operates in conjunction with the rotation of the holding cylinder 36 and protrudes from the peripheral surface of the folding cylinder 37. Can be folded horizontally with the center of the web W (folded sheet S) protruding.

  The holding cylinder 36 and the folding cylinder 37 are configured to be rotated in opposite directions in synchronization with each other by a driving device (not shown) so that the saw blade, the saw blade receiver, the insertion blade, and the holding device face each other. In addition, the rotation phase is set.

  Accordingly, the web W is vertically folded by the former 31, and then nipped and conveyed by the pair of nipping rollers 35 via the path changing roller 32, and is supplied between the holding cylinder 36 and the folding cylinder 37. . Then, when the holding cylinder 36 and the folding cylinder 37 rotate synchronously, the needle device of the folding cylinder 37 projects the needle outward at a predetermined position, thereby piercing the leading end of the cut web W. The folding cylinder 37 winds the web W around the circumferential surface. Subsequently, when the web W is wound around the circumferential surface of the folding cylinder 37 by a predetermined amount, the needle device is operated to return the needle, thereby releasing the holding of the tip portion of the web W and the insertion blade of the folding cylinder 37. The web W is projected from the circumferential surface of the folding cylinder 37 by projecting outward from the circumferential surface. Then, the web W protruding from the peripheral surface of the folding cylinder 37 is held by the holding device of the holding cylinder 36, and the web W is horizontally folded at the center in the conveying direction. Thereafter, the web W is wound around the peripheral surface of the gripping cylinder 36 by the portion held by the gripping device as a leading portion, and the web W is cut by a saw blade of the folding cylinder 37 at a predetermined position. Thus, a signature S is formed.

  Further, a conveying conveyor 38 is provided on the downstream side of the holding cylinder 36 and the folding cylinder 37. The conveying conveyor 38 transfers the signature S formed by the holding cylinder 36 and the folding cylinder 37 to the web conveying path K1. It is transported toward the downstream side. A chopper folding device 39 is disposed above the transport conveyor 38. The chopper folding device 39 has a folding blade that can be moved up and down by a driving device (not shown), and the folding blade is lowered. The signature S that is transported on the transport conveyor 38 can be folded along the transport direction.

  An impeller 40 capable of receiving the signature S sequentially transported along the web transport path K1 is provided on the downstream side of the transport conveyor 38. The impeller 40 is received by rotating. The signature S can be transferred to the transfer conveyor 41 provided below at a predetermined pitch.

  In the stream-side paper discharge unit 34 disposed in the web conveyance path K2, on the downstream side of the path changing roller 32, web path rollers 42 and 43, a pair of nipping rollers 44, a web path roller 45, and a pair of nipping rollers 46 are provided. Is arranged. In this case, the web conveyance path K2 branched from the path changing roller 32 is configured to go from the upper side to the lower side in the vertical direction, and then changed in the horizontal direction.

  In addition to the pair of nipping rollers 46 described above, a cutting device 47 is provided on the downstream side of the pair of nipping rollers 46 on the downstream side of the web pass roller 45 that changes the web conveyance path K2 in the horizontal direction. A signature transport device 48 is disposed on the downstream side of the cutting device 47. In this embodiment, the signature S is the sheet of the present invention, and the signature conveying device 48 functions as the sheet conveying device of the present invention. The downstream side of the signature conveying device 48 is connected to the transfer conveyor 41 described in the configuration of the impeller-side paper discharge unit 33. Therefore, the transfer conveyor 41 is configured to be able to convey the signature S transferred from the impeller 40 and the signature S transferred from the signature conveying device 48.

  Here, the cutting device 47 and the signature transport device 48 will be described in detail.

  As shown in FIG. 1, the cutting device 47 includes a saw cylinder 52 having two saw blades 51 and a receiving cylinder 54 having two saw blade receivers 53. In this case, the saw cylinder 52 and the receiving cylinder 54 are disposed to face each other up and down across the web W (web conveyance path K2) to be conveyed, the saw cylinder 52 is disposed on the upper side, and the lower side. A receiving cylinder 53 is disposed on the side.

  The saw cylinder 52 can be driven and rotated by a driving device (not shown), and the two saw blades 51 provided on the outer peripheral portion are provided at equal intervals in the circumferential direction of the saw cylinder 52, that is, at positions opposed to each other by 180 degrees. It has been. Each of the saw blades 51 is provided along the axial direction of the saw cylinder 52 with the tip portion protruding outward from the outer peripheral surface of the saw cylinder 52.

  The receiving cylinder 54 can be driven and rotated by a driving device (not shown), and the two saw blade receivers 53 provided on the outer peripheral portion are evenly spaced in the circumferential direction of the receiving cylinder 54, that is, at positions facing each other by 180 degrees. Is provided. Each saw blade receiver 53 is made of an elastic material such as rubber, and is provided along the axial direction of the receiving cylinder 54 in a state in which the tip end portion protrudes slightly outward from the outer peripheral surface of the receiving cylinder 54. Yes.

  The saw cylinder 52 and the receiving cylinder 54 have the same diameter and can be synchronously rotated in opposite directions. The saw blade 51 and the saw blade receiver 53 are rotated so that they face each other. The phase is set. Therefore, the saw cylinder 52 and the receiving cylinder 54 can cut the web W into a predetermined length at a constant period.

  Therefore, when the saw cylinder 52 and the receiving cylinder 54 are synchronously rotated in a state where the saw blade 51 and the saw blade receiver 53 are aligned, and the web W is supplied between the saw cylinder 52 and the receiving cylinder 54, the saw is cut. When the blade 51 and the saw blade receiver 53 come to a position where they face each other, the web W can be cut along the width direction to form a signature S having a predetermined length.

  The signature transport device 48 receives the signature S transported by the high-speed transport conveyor 61 at a low speed and receives the signature S transported by the high-speed transport conveyor 61 at a low speed. Positioned on the upstream side of the conveying direction of the signature S from the first holding member 63, the first pressing member 63 that presses the leading end of the signature S transferred from the high-speed conveying conveyor 61 to the low-speed conveying conveyor 62. The second presser member 64 that presses the rear end portion of the signature S that has been transferred from the high-speed transfer conveyor 61 to the low-speed transfer conveyor 62, and the pressing timing of the signature S by the first presser member 63 can be adjusted. Presser timing adjustment means 65.

  The high-speed transport conveyor 61 includes an upper high-speed transport conveyor 66 and a lower high-speed transport conveyor 67 that can sandwich and transport the signature S from above and below, and the lower high-speed transport conveyor 67 is upstream of the upper high-speed transport conveyor 66. The low-speed conveyor 62 is disposed opposite to the downstream portion of the upper high-speed conveyor 66, and the first pressing member 63 and the second pressing member 64 are downstream of the upper high-speed conveyor 66. And facing the upstream portion of the low-speed conveyor 62.

  In other words, a lower high-speed transfer conveyor 67 is disposed on the downstream side of the cutting device 47 in the transfer direction of the signature S across the web transfer path K <b> 2, and downstream of the lower high-speed transfer conveyor 67. On the side, a low-speed conveyor 62 is disposed. On the other hand, an upper high-speed transfer conveyor 66 is disposed on the side of the saw cylinder 52 across the web transfer path K2 so as to face the lower high-speed transfer conveyor 67 and the low-speed transfer conveyor 62.

  In this case, the upper high-speed transfer conveyor 66 and the lower high-speed transfer conveyor 67 are disposed so as to be in contact with the web transfer path K2, while the upper high-speed transfer conveyor 66 and the low-speed transfer conveyor 62 are a predetermined distance from the web transfer path K2. Are spaced apart from each other. That is, the height of the low-speed transfer conveyor 62 is set lower than the height of the lower high-speed transfer conveyor 67 by a predetermined height. A first pressing member 63 and a second pressing member 64 are disposed downstream of the upper high-speed transfer conveyor 66 so as to face the low-speed transfer conveyor 62. That is, the signature S is transported at high speed while being sandwiched between the upper high-speed transport conveyor 66 and the lower high-speed transport conveyor 67, and when the signature S is transferred from the lower high-speed transport conveyor 67 to the low-speed transport conveyor 62, After being decelerated by the second pressing member 64, it is conveyed at a low speed by the low-speed conveying conveyor 62.

  As shown in FIGS. 1, 2, and 5, the upper high-speed transfer conveyor 66 includes a plurality of (in this embodiment, five) pulleys 68 a and a plurality of (in this embodiment) spanned between the plurality of pulleys 68 a. 10) endless belts 69a and 69b, and has a triangular shape that protrudes upward in a side view. In the present embodiment, two kinds of signatures Sa and Sb can be conveyed in the width direction of the web conveyance path K2, and the plurality of endless belts 69a and 69b are respectively pulleys in the region for conveying the signatures Sa and Sb. It is provided at equal intervals in the axial direction of 68a, that is, in the width direction of the signatures Sa and Sb.

  The lower high-speed conveyor 67 is composed of a plurality (six in this embodiment) of pulleys 70a and a plurality (12 in this embodiment) endless belts 71a and 71b stretched over the plurality of pulleys 70a. In addition, an inverted triangular shape that protrudes downward in a side view is formed. In the present embodiment, two kinds of signatures Sa and Sb can be conveyed in the width direction of the web conveyance path K2, and the plurality of endless belts 71a and 71b are respectively pulleys in the region for conveying the signatures Sa and Sb. It is provided at equal intervals in the axial direction of 70a, that is, in the width direction of the signatures Sa and Sb. In this case, the endless belts 69a and 69b of the upper high-speed conveyor 66 and the endless belts 71a and 71b of the lower high-speed conveyor 67 are shifted in the width direction, that is, the endless belts 69a and 69b and the endless belt 71a. , 71b are alternately arranged in the width direction. The upper high-speed transfer conveyor 66 and the lower high-speed transfer conveyor 67 can be driven at the same speed by a driving device (not shown).

  The low-speed conveyor 62 includes a plurality (six in this embodiment) of pulleys 72a and a plurality (12 in this embodiment) endless belts (low-speed belts) 73a and 73b that are stretched over the plurality of pulleys 72a. It has an inverted triangular shape that is convex downward in a side view. In the present embodiment, two types of signatures Sa and Sb can be conveyed in the width direction of the web conveyance path K2, and the plurality of endless belts 73a and 73b are respectively pulleys in the region for conveying the signatures Sa and Sb. It is provided at equal intervals in the axial direction of 72a, that is, in the width direction of the signatures Sa and Sb. In this case, the endless belts 71a and 71b of the lower high-speed transfer conveyor 67 and the endless belts 73a and 73b of the low-speed transfer conveyor 62 are in the same position in the width direction, that is, the endless belts 71a and 71b and the endless belts 73a and 73b are Are arranged in a straight line. Further, the endless belts 69a and 69b of the upper high speed conveyor 66 and the endless belts 73a and 73b of the low speed conveyor 62 are shifted in the width direction, that is, the endless belts 69a and 69b and the endless belts 73a and 73b are Are alternately arranged in the width direction. The low-speed transport conveyor 62 can be driven by a driving device (not shown) so that the transport speed is lower than that of the high-speed transport conveyor 61 (upper high-speed transport conveyor 66, lower high-speed transport conveyor 67). .

  As described above, the first presser member 63 can adjust the press timing of the signature S by the press timing adjusting means 65. The presser timing adjusting unit 65 is a position adjusting unit that can adjust the relative position between the first presser member 63 and the second presser member 64, and adjusts the position of the first presser member 63 along the conveyance direction of the signature S. Is possible.

  That is, as shown in FIGS. 1 to 4, a support shaft 81 is provided in the downstream portion of the upper high-speed transfer conveyor 66 and above the low-speed transfer conveyor 62. The support shaft 81 is disposed along the width direction of the signature S (fold signature Sa, Sb), and each end in the axial direction is rotatably supported by the left and right printing machine frames 82a, 82b. . The first presser member 63 is supported on the support shaft 81 via a presser timing adjustment unit 65.

  A base end portion of a plurality of (eight in this embodiment) support arms 83 is fitted to the support shaft 81 at a predetermined position in the axial direction, and is fixed to the support shaft 81 by a fastening bolt 84 so as to be integrally rotatable. A base end portion of a support lever 85 is rotatably connected to a distal end portion of the support arm 83 by a connecting shaft 86. A brake roller 87 is rotatably connected to the distal end portion of the support lever 85 by a connecting shaft 88. In the present embodiment, since two types of signatures Sa and Sb can be transported in the width direction of the web transport path K2, a plurality of brake rollers 87 (eight in the present embodiment) are provided. The rollers 87a and 87b are regions where the signatures Sa and Sb are conveyed, and are provided at equal intervals in the axial direction of the support shaft 81, that is, in the width direction of the signatures Sa and Sb. In this case, the brake rollers 87a and 87b are disposed above the endless belts 73a and 73b in the low-speed conveyor 62.

  The brake rollers 87 (87a, 87b) press the upper surfaces of the endless belts 73a, 73b of the low-speed transport conveyor 62 by their own weight because the support lever 85 is rotatably connected to the support arm 83 of the support shaft 81. is doing. Therefore, when the signature S is conveyed on the endless belts 73a and 73b of the low-speed conveyor 62, the leading end of the signature S is a pressing portion between the brake roller 87 (87a and 87b) and the endless belts 73a and 73b. By contacting and entering, the upper surface of the signature S can be pressed and decelerated.

  Further, one end of the support shaft 81 passes through the printing machine frame 82a, and an adjustment block 89 is fixed to the end of the support shaft 81 outside the printing machine frame 82a (on the left side in FIG. 2). The adjustment handle 90 is attached to the adjustment block 89. Further, the adjustment block 89 is displaced from the center of the support shaft 81 and is formed with an arc-shaped long hole 91 having the center of the support shaft 81 as a fulcrum. The long hole 91 has a lock lever (locking means). ) The shaft portion 92 is fitted and screwed into the printing machine frame 82a.

  Therefore, the operator can turn the support shaft 81 by the adjustment handle 90, and when the lock lever 92 is tightened at a predetermined turning position, the operator can move between the lock lever 92 and the printing machine frame 82a. By sandwiching the adjustment block 89, the support shaft 81 can be locked so as not to rotate with respect to the printing machine frame 82a.

  As shown in FIG. 4, when the support shaft 81 is rotated counterclockwise by the adjustment handle 90 from the state where the first pressing member 63 is in the position indicated by the solid line in FIG. At the same time, the support arm 83 rotates in the same direction. Then, since the brake roller 87 is in contact with the low-speed transport conveyor 62, the support arm 83 presses the brake roller 87 to the right via the support lever 85. Therefore, the brake roller 87 rolls on the low-speed transport conveyor 62 and moves to the right, that is, in the direction approaching the second presser member 64 toward the upstream side in the transport direction of the signature S, and the first presser member 63. Can be changed to a position represented by a two-dot chain line in FIG.

  The printing machine frame 82 a is provided with an adjustment scale 93 for measuring the rotation amount of the support shaft 81 by the adjustment handle 90, that is, the movement amount of the brake roller 87.

  In this case, the presser timing adjusting means 65 is a position adjusting means, and has a roller moving means for moving the plurality of brake rollers 87 (87a, 87b). The roller moving means includes a support shaft 81, a support arm 83, a support lever 85, an adjustment handle 90, and the like. By rotating the support shaft 81, a plurality of brake rollers 87 (87a, 87b) are moved integrally. It is possible.

  As shown in FIGS. 1 and 5, the second presser member 64 is positioned above the upstream portion of the low-speed transport conveyor 62 at the intermediate position in the transport direction of the signature S in the upper high-speed transport conveyor 66. 101 is provided. The support shaft 101 is disposed along the width direction of the signature S (fold signature Sa, Sb), and each end in the axial direction is rotatably supported by the left and right printing machine frames 82a, 82b. . A second pressing member 64 is supported on the support shaft 101.

  A plurality of (in this embodiment, twelve) brush rollers 102 are fixed to the support shaft 101 as a second pressing member 64 at a predetermined position in the axial direction so as to be integrally rotatable. In this embodiment, since two kinds of signatures Sa and Sb can be conveyed in the width direction of the web conveyance path K2, a plurality of brush rollers 102 are provided, and the plurality of brush rollers 102a and 102b are classified as signatures Sa. , Sb are provided at predetermined intervals in the axial direction of the support shaft 81, that is, in the width direction of the signatures Sa, Sb, respectively. In this case, a part of the brush rollers 102 a and 102 b is disposed above the endless belts 73 a and 73 b in the low-speed conveyor 62.

  The brush rollers 102 (102a, 102b) have two pressing brushes 103 mounted at equal intervals in the circumferential direction, that is, at positions facing each other by 180 degrees, and the pressing brushes 103 are connected to the endless belts 73a of the low-speed conveying conveyor 62. , 73b can be pressed. The brush roller 102 (102a, 102b) is set to a length such that the tip of each pressing brush 103 protrudes downward from the endless belts 73a, 73b, so that each endless belt 73a, The signature S can be pressed in a predetermined region in the longitudinal direction at 73b.

  Further, one end of the support shaft 101 passes through the printing machine frame 82b, and a driven gear (worm) is connected to the end of the support shaft 101 outside the printing machine frame 82b (on the right side in FIG. 5). Wheel) 104 is solidified, and a driving gear (worm gear) 105 of a driving device (not shown) is engaged with the driven gear 104.

  Accordingly, when the support shaft 101 is rotated in the clockwise direction in FIG. 1 via the drive gear 103 and the driven gear 104 by the driving device, the brush roller 102 is rotated in the same direction together with the support shaft 101. At this time, when the signature S is conveyed on the endless belts 73a, 73b of the low-speed conveyor 62, the pressing brush 103 of the rotating brush roller 102 (102a, 102b) presses the upper surface of the signature S, and this folding is performed.帖 S can be decelerated.

  In this case, the brush roller 102 (102 a, 102 b) as the second pressing member 64 can be driven and rotated at a peripheral speed slower than the high-speed transport conveyor 61 and at a peripheral speed faster than the low-speed transport conveyor 62.

  In this embodiment, the second presser member 64 can adjust the press timing of the signature S by the press timing adjusting means 111. The presser timing adjustment unit 111 includes a brush phase adjustment unit that can adjust the phase of the brush in the brush roller 102. That is, the brush roller 102 is configured such that a pair of semi-circular roller bodies 102a and 102b are fitted so as to sandwich the support shaft 101, and are fixed to the support shaft 101 by two fixing bolts 102c. Therefore, the phase of the pressing brush 103 with respect to the support shaft 101 can be changed by rotating the brush roller 102 (roller main bodies 102a and 102b) with respect to the support shaft 101 in a state where the fixing bolt 102c is relaxed.

  Here, operations of the cutting device 47 and the signature transport device 48 in the stream-side paper discharge unit 34 according to the first embodiment will be described.

  As shown in FIG. 1, when the web W is transported along the web transport path K <b> 2 in the stream-side paper discharge unit 34 of the first embodiment and reaches the cutting device 47, the web W is rotated synchronously. And the receiving cylinder 54. Then, the web W is cut along the width direction between the saw cylinder 52 and the receiving cylinder 54 when the saw blade 51 and the saw blade receiver 53 face each other, and has a predetermined length. S is formed.

  When the cutting device 47 forms a signature S having a predetermined length, the signature S is a high-speed conveyance conveyor 61 in the signature conveyance device 48, that is, between the upper high-speed conveyance conveyor 66 and the lower high-speed conveyance conveyor 67. To be supplied. Since the upper high-speed transfer conveyor 66 and the lower high-speed transfer conveyor 67 operate at the same speed, the signature S is sandwiched between the upper high-speed transfer conveyor 66 and the lower high-speed transfer conveyor 67 and directed toward the low-speed transfer conveyor 62. Are transported.

  When the signature S is transferred from the high-speed transfer conveyor 61 to the low-speed transfer conveyor 62, the tip end portion contacts the contact portion between the brake roller 87 of the first pressing member 63 and the low-speed transfer conveyor 62 at the time of transfer. Thus, the upper surface portion is pressed by the brake roller 87. At the same time, the upper surface of the signature S is pressed by the pressing brush 103 of the brush roller 102 of the second pressing member 64.

  That is, the signature S is conveyed at a high speed by the high-speed conveyor 61 and delivered to the low-speed conveyor 62, and when the rear end portion is released from the clamping of the high-speed conveyor 61, the tip of the signature S is braked. At the same time as being pressed by the roller 87, the rear end portion is pressed by the pressing brush 103 of the brush roller 102, so that it is dropped onto the low-speed transfer conveyor 62, and as a result, decelerated to a predetermined transfer speed.

  When the signature S is delivered from the high-speed transport conveyor 61 to the low-speed transport conveyor 62, the transport speed is reduced, so that the leading end overlaps the rear end of the preceding signature S, so-called scaly. It becomes. The low-speed conveyor 62 conveys the signatures S sequentially delivered from the high-speed conveyor 61 toward the downstream side while overlapping.

  By the way, in the commercial web offset press of Example 1, the type of web W to be used, for example, the size, thickness, rigidity, number of sheets, and the like differ depending on the printing medium, and the weight of the formed signature S is different. Is different. When the signature S is decelerated and overlapped by the signature conveying device 48 described above, the heavy signature S is more difficult to decelerate than the light signature S and is difficult to be superimposed at an appropriate position. It becomes. Therefore, in the present embodiment, an appropriate brake force is applied to the signature S by adjusting the position of the first pressing member 63 according to the weight of the signature S.

  In other words, when the weight of the signature S increases, the position of the first pressing member 63 is moved to the upstream side in the conveying direction of the signature S by the press timing adjusting means (position adjusting means) 65, and the second pressing member Adjustment is made so that the relative distance (position) to 64 becomes shorter. Specifically, as shown in FIGS. 1 to 4, the operator loosens the lock lever 92 and allows the adjustment block 89 to turn, and then moves the adjustment handle 90 counterclockwise in FIG. 3. Rotate by a predetermined angle. Then, the support shaft 81 integrated with the adjustment handle 90 is rotated by a predetermined angle in the same direction, that is, in the counterclockwise direction in FIG. At this time, the support arm 83 together with the support shaft 81 rotates in the same direction, and the brake roller 87 is moved to the right by a predetermined amount in FIG. Is changed. Thereafter, the lock block 92 locks the adjustment block 89, that is, the support shaft 81 so as not to rotate.

  When the position of the first presser member 63 is changed to the upstream side in the transport direction, when the signature S is transferred from the high-speed transport conveyor 61 to the low-speed transport conveyor 62, the front end portion is moved to the first presser earlier than before the adjustment. It is pressed by the brake roller 87 of the member 63. Therefore, even if the pressing force (self-weight) of the signature S by the brake roller 87 is the same, the brake roller 87 presses the signature S at an early stage, thereby reducing the conveying speed of the signature S. Power increases. That is, when the signature S becomes heavier, the inertial force of the traveling signature S increases, so it is necessary to increase the braking force. Then, after the leading end of the signature S is pressed by the brake roller 87, the trailing end is pressed by the pressing brush 103 of the brush roller 102, so that the signature S is appropriately decelerated to a predetermined conveying speed. It will be.

  On the other hand, when the weight of the signature S is reduced, the position of the first pressing member 63 is moved to the downstream side in the conveying direction of the signature S by the pressing timing adjusting means (position adjusting means) 65, and the second pressing member 64 so that the relative distance (position) to 64 becomes longer. In this case, contrary to the above, the operator rotates the adjustment handle 90 by a predetermined angle in the clockwise direction in FIG. 3 and rotates the support shaft 81 in the same direction, via the support lever 85. The position of the first pressing member 63 is changed by moving the brake roller 87 to the left by a predetermined amount in FIG.

  When the position of the first pressing member 63 is changed to the downstream side in the conveying direction, when the signature S is transferred from the high-speed conveying conveyor 61 to the low-speed conveying conveyor 62, the leading end is later than before the first pressing member. It is pressed by 63 brake rollers 87. Therefore, even if the pressing force (self-weight) of the signature S by the brake roller 87 is the same, the braking force for reducing the conveyance speed of the signature S by the brake roller 87 pressing the signature S late. Decrease. That is, when the signature S is lightened, the inertial force of the traveling signature S is reduced, so that it is necessary to reduce the braking force. Then, after the leading end of the signature S is pressed by the brake roller 87, the trailing end is pressed by the pressing brush 103 of the brush roller 102, so that the signature S is appropriately decelerated to a predetermined conveying speed. It will be.

  As described above, in the sheet conveying apparatus according to the first exemplary embodiment, the high-speed conveyance conveyor 61 that can convey the signature S at a high speed and the signature S that is conveyed by the high-speed conveyance conveyor 61 are received, and the speed is lower than that of the high-speed conveyance conveyor 61. , A first presser member 63 that holds the tip of the signature S transferred from the high-speed transfer conveyor 61 to the low-speed transfer conveyor 62, and a direction in which the signature S is transferred from the first presser member 63. The second presser member 64 that presses the rear end of the signature S that is transferred from the high-speed transfer conveyor 61 to the low-speed transfer conveyor 62 and the press timing of the signature S by the first presser member 63 is adjusted. Possible presser timing adjusting means 65 is provided.

  Accordingly, by adjusting the pressing timing of the signature S by the first pressing member 63 according to the conveyance state of the signature S, such as the paper quality, thickness, and number of the signatures S to be conveyed, the signature S to be conveyed is adjusted. The speed can be reduced appropriately.

  In the sheet conveying apparatus according to the first embodiment, the upper and lower high-speed conveyance conveyors 66 and 67 that can convey the signature S from above and below are provided as the high-speed conveyance conveyor 61, and the lower high-speed conveyance conveyor 67 is provided as the upper high-speed conveyance conveyor 66. The low-speed conveyor 62 is opposed to the downstream portion of the upper high-speed conveyor 66, the first pressing member 63 and the second pressing member 64 correspond to the downstream portion of the upper high-speed conveyor 66, and It faces the upstream portion of the low speed conveyor 62. Therefore, the signature S transferred from the high speed conveyor 61 to the low speed conveyor 62 can be appropriately decelerated on the low speed conveyor 62 by the first pressing member 63 and the second pressing member 64.

  In the sheet conveying apparatus according to the first exemplary embodiment, the relative position between the first presser member 63 and the second presser member 64 can be adjusted by the presser timing adjusting unit 65 (position adjusting unit). Therefore, when the relative position of the first pressing member 63 and the second pressing member 64 is changed, the timing for pressing the front end portion of the signature S or the rear end portion of the signature S is changed, and the conveyance state of the signature S is changed. Even if changes, it can always decelerate to an appropriate speed.

  In the sheet conveying apparatus according to the first exemplary embodiment, the position of the first pressing member 63 can be adjusted along the conveying direction of the signature S. Therefore, the timing for pressing the front end portion of the signature S is adjusted by moving the first pressing member 63 closer to or away from the second pressing member 64, and the signature is changed according to the conveyance state of the signature S. S can be decelerated to an appropriate speed.

  In the sheet conveying apparatus according to the first exemplary embodiment, the first pressing member 63 includes a brake roller 87 that is rotatable and that presses the upper surface of the signature S by its own weight. Accordingly, when the upper surface of the signature S comes into contact with the brake roller 87, the signature S is decelerated due to the weight of the brake roller 87. At this time, the brake roller 87 rotates, so that the signature S is damaged. Can be prevented.

  Further, in the sheet conveying apparatus of the first embodiment, a plurality of endless belts 73a and 73b are provided as the low-speed conveying conveyor 62, and a plurality of brake rollers 87a and 87b are provided so as to face above the plurality of endless belts 73a and 73b. The plurality of brake rollers 87a and 87b are movable (roller moving means). Therefore, the brake rollers 87a and 87b are adjusted along the moving direction of the endless belts 73a and 73b, and the configuration of the apparatus can be simplified.

  In the sheet conveying apparatus according to the first exemplary embodiment, a support shaft 81 that is disposed in the width direction of the signature S and supports the plurality of brake rollers 87a and 87b is provided. The rollers 87a and 87b can be moved integrally. Therefore, by integrally moving the plurality of brake rollers 87a and 87b, the timing of pressing the signature S by the brake rollers 87a and 87b can be adjusted at the same time, and the workability of the adjustment work can be improved. .

  In the sheet conveying apparatus according to the first exemplary embodiment, the left and right printing machine frames 82 a and 82 b of the support shaft 81 are rotatably supported. A support arm 83 is fixed to the support shaft 81, and the tip of the support arm 83 is fixed. A support lever 85 is rotatably connected to the front end of the support lever 85, and a brake roller 87 is rotatably connected to the tip of the support lever 85. Therefore, the position of the brake roller 87 can be adjusted only by rotating the support shaft 81, and the workability of the adjustment work can be improved.

  In the sheet conveying apparatus according to the first exemplary embodiment, the end of the support shaft 81 passes through the printing machine frame 82a, and the adjustment handle 90 is attached to the end of the support shaft 81 outside the printing machine frame 82a. A lock lever 92 is provided to make the support shaft 81 unrotatable with respect to the printing machine frame 82a. Accordingly, even when the signature S is being conveyed, the position of the brake roller 87 can be adjusted by the adjustment handle 90, and the workability of the adjustment work can be improved.

  In the sheet conveying apparatus according to the first exemplary embodiment, an adjustment scale 93 that measures the amount of rotation of the support shaft 81 by the adjustment handle 90 is provided. Therefore, the position of the brake roller 87 can be adjusted with high accuracy.

  In the sheet conveying apparatus according to the first embodiment, the second pressing member 64 can be driven and rotated at a peripheral speed slower than that of the high-speed conveying conveyor 61, and the pressing brush 103 provided in a predetermined region in the circumferential direction of the outer peripheral surface. Thus, a brush roller 102 for pressing the upper surface of the signature S is provided. Therefore, the rear end portion of the signature S conveyed by the pressing brush 103 of the brush roller 102 can be pressed at an appropriate timing.

  In the sheet conveying apparatus according to the first exemplary embodiment, the phase of the pressing brush 103 in the brush roller 102 can be adjusted (brush phase adjusting unit). Therefore, by adjusting the phase of the brush 103, the trailing end of the folded signature S to be conveyed can be pressed at an optimal timing, and the signature S can be decelerated to an appropriate speed.

  FIG. 8 is a schematic diagram illustrating a sheet conveying apparatus according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the same function as what was demonstrated in the Example mentioned above, and the overlapping description is abbreviate | omitted.

  The stream-side paper discharge unit 34 according to the second embodiment is similar to the first embodiment described above in that it includes a cutting device 47 and a signature conveying device 48. In the second embodiment, the first pressing member is used. The pressing timing of the signature S by 63, that is, the relative position to the second pressing member 64 can be automatically adjusted.

  In the second embodiment, as shown in FIG. 8, the support shaft 81 is disposed along the width direction of the signature S, and each end portion in the axial direction is rotatable to the left and right printing machine frames 82a and 82b. The first presser member 63 is supported on the support shaft 81 via a presser timing adjustment unit 111.

  A brake roller 87 is attached to the support shaft 81 via a support arm 83 and a support lever 85, and this configuration is the same as in the first embodiment. Further, one end of the support shaft 81 passes through the printing machine frame 82a, and an output shaft of a driving device 112 having a driving motor mounted on the outside of the printing machine frame 82a is drivingly connected. A drive control device 113 is connected to the drive device 112, and an operation panel 114 is connected to the drive control device 113.

  Therefore, when an operator inputs an adjustment instruction value through the operation panel 114, the drive control device 113 controls the drive device 112 (drive motor) and rotates the support shaft 81. Then, the support arm 83 is rotated in the same direction together with the support shaft 81, and the brake roller 87 is moved along the conveying direction of the signature S via the support lever 85 to change to the position of the first pressing member 63. be able to.

  In the second embodiment, the position of the first pressing member 63 can be automatically adjusted by inputting web data and print data in advance using the operation panel 114. Here, the web data refers to the width of the web W (web size), the traveling speed of the web W, the thickness of the web W, the number of signatures S, and the like, and the print data refers to the image line rate.

  Accordingly, the drive control device 113 calculates the weight of the signature S based on the web data, the print data, and the like, estimates the optimum position of the first pressing member 63 according to the weight, and presses the press timing adjusting means 111 ( The drive device 112) can be automatically actuated (preset control).

  Further, in the second embodiment, the shift detection unit that detects the shift of the signature S conveyed by the low-speed transfer conveyor 62 after passing through the first presser member 63 and the second presser member 64 is provided above the low-speed transfer conveyor 62. A camera 115 is provided. The image captured by the camera 115 is transmitted to the drive control device 113, and the drive control device 113 uses the presser timing adjustment unit 111 (drive device 112) to determine the position of the first presser member 63 based on the image captured by the camera 115. The phase of the second pressing member 64 is adjusted. In this case, the drive control device 113 determines whether or not each signature S is overlapped at an appropriate position based on the image captured by the camera 115. When the signature S is not in the proper position, the drive control device 113 feedback-controls the presser timing adjustment unit 111.

  In addition, although the camera 115 was applied as a shift | offset | difference detection means, it is not restricted to this structure, For example, a position sensor (laser sensor etc.), a contact-type sensor, etc. may be sufficient.

  In the sheet conveying apparatus according to the second embodiment, the first pressing member 63 that presses the leading end of the signature S and faces the upper side of the low-speed conveying conveyor 62, and the first pressing member 63 that presses the trailing end of the signature S. In addition to providing the two presser members 64, presser timing adjusting means 111 capable of adjusting the presser timing of the signature S by the first presser member 63 is provided. The drive control device 113 sets the presser timing of the signature S by the first presser member 63. Automatic adjustment is possible.

  Accordingly, the speed of the conveyed signature S can be appropriately reduced, and the workability of the adjustment work can be improved.

  Further, in the sheet conveying apparatus of the second embodiment, the drive control device 113 is provided as the press timing adjusting unit 111, and the press timing by the first press member 63 is automatically adjusted based on preset web data and print data. Yes. Therefore, even if the web data or the print data changes, the conveyed signature S can be always pressed at an appropriate timing.

  In the sheet conveying apparatus according to the second embodiment, the camera 115 that detects the deviation of the signature S conveyed by the low-speed conveying conveyor 62 after passing through the first pressing member 63 and the second pressing member 64 is provided. 113 automatically adjusts the press timing of the presser members 63 and 64 based on the photographing result of the camera 115. Accordingly, the proper pressing timing by the pressing members 63 and 64 is automatically set based on the conveyance state of the signature S after deceleration, thereby improving the conveyance accuracy and the workability of the adjustment work. Can be improved.

  In each of the above-described embodiments, the support shaft 81 is rotated by the presser timing adjusting means 65 and 111 so that the positions of the plurality of brake rollers 87a and 87b can be moved integrally and adjusted. It is not limited to. For example, each shaft end of the support shaft is supported so that it can move along the conveyance direction of the signature with respect to the frame, and by sliding this support shaft, the positions of the plurality of brake rollers are moved and adjusted together It may be possible.

  In this case, by making each end in the width direction of the support shaft independently rotatable or slidable, the amount of adjustment of the brake roller differs via the support shaft according to the state in the width direction of the signature (sheet). By doing so, the signature can be decelerated to an appropriate speed even when the signature is being conveyed, that is, when one end in the width direction is thick.

  Also, for each signature Sa, Sb, each brake roller is movably mounted independently on the support shaft, or each brake roller is independently mounted movably mounted on the support shaft. Also good. In this case, when a plurality of types of sheets are conveyed in the axial direction of the support shaft, the brake roller corresponding to each sheet is moved independently, so that each brake roller The position can be adjusted with high accuracy.

  Further, in each of the above-described embodiments, the sheet of the present invention has been described as the signature S formed by cutting a single web W and then cutting it, but the present invention is not limited to this configuration. For example, it is possible to use a plurality of webs W stacked together, or to cut and use a web that has been folded vertically and then folded horizontally. May be used.

  In each of the above-described embodiments, the sheet conveying apparatus of the present invention has been described as being applied to a paper discharge device of a commercial web offset printing press. However, the present invention is not limited to this printing machine and paper discharge device. For example, a newspaper printing machine or a sheet-fed printing machine may be used.

  The sheet conveying apparatus according to the present invention can adjust the sheet pressing timing by the pressing member so that the speed of the conveyed sheet can be appropriately reduced, and is applicable to any kind of printing press. can do.

DESCRIPTION OF SYMBOLS 11 Paper feeder 12 Infeed device 13 Printing device 14 Drying device 15 Cooling device 16 Web pass device 17 Folding device 18 Paper discharge device 33 Impeller side paper discharge unit 34 Stream side paper discharge unit 47 Cutting device 48 Eclectic conveyance device ( Sheet transport device)
61 High-speed Conveyor 62 Low-Speed Conveyor 63 First Pressing Member 64 Second Pressing Member 65,111 Presser Timing Adjustment Means 66 Upper High-Speed Conveyor 67 Lower High-Speed Conveyor 81 Support Shaft 82a, 82b Printing Machine Frame 83 Support Arm 85 Support Lever 87, 87a, 87b Brake roller 90 Adjustment handle 92 Lock lever (locking means)
112 drive device 113 drive control device 114 operation panel 115 camera (deviation detection means)

Claims (16)

A high-speed conveyor that can convey sheets at high speed,
A low-speed transport conveyor that receives a sheet transported by the high-speed transport conveyor and can transport the sheet at a lower speed than the high-speed transport conveyor;
A first pressing member that presses the leading edge of the sheet transferred from the high-speed conveyor to the low-speed conveyor;
A second presser member that is positioned upstream of the first presser member in the sheet transport direction and presses the rear end of the sheet transferred from the high-speed transport conveyor to the low-speed transport conveyor;
A presser timing adjusting means capable of adjusting the presser timing of the sheet by the first presser member or the second presser member;
A sheet conveying apparatus comprising:   The high-speed transport conveyor has an upper high-speed transport conveyor and a lower high-speed transport conveyor that can sandwich and transport sheets from above and below, and the lower high-speed transport conveyor is disposed to face an upstream portion of the upper high-speed transport conveyor. The low-speed conveyor is disposed opposite to the downstream portion of the upper high-speed conveyor, and the first pressing member and the second pressing member correspond to the downstream portion of the upper high-speed conveyor, and The sheet conveying apparatus according to claim 1, wherein the sheet conveying apparatus is disposed to face an upstream portion of the low-speed conveying conveyor.   3. The sheet conveying apparatus according to claim 1, wherein the presser timing adjusting unit includes a position adjusting unit capable of adjusting a relative position between the first presser member and the second presser member.   The sheet conveying apparatus according to claim 3, wherein the position adjusting unit is capable of adjusting a position of the first pressing member along a sheet conveying direction.   The sheet conveying apparatus according to claim 4, wherein the first pressing member is rotatable and includes a brake roller that presses the upper surface of the sheet by its own weight.   The low-speed conveyor includes a plurality of low-speed belts that are movable in the sheet conveyance direction and are disposed at predetermined intervals in the sheet width direction, and the brake roller is located above the plurality of low-speed belts. The sheet conveying apparatus according to claim 5, wherein a plurality of the sheet adjusting devices are provided opposite to each other, and the position adjusting unit includes a roller moving unit that moves the plurality of brake rollers.   The roller moving means has a support shaft that is arranged in the width direction of the sheet and supports the plurality of brake rollers, and moves or integrally moves the plurality of brake rollers by rotating or sliding the support shaft. The sheet conveying apparatus according to claim 6, which is possible.   The sheet conveying apparatus according to claim 7, wherein the roller moving unit is capable of independently rotating or sliding each end portion in the width direction of the support shaft.   The roller moving means includes: a support shaft in which each end portion in the axial direction is rotatably supported by the left and right frames; a support arm in which a base end portion is fixed to the support shaft; The seat according to claim 7, further comprising: a support lever that is rotatably connected to a front end portion of the support arm; and the brake roller that is rotatably connected to the front end portion of the support lever. Conveying device.   At least one end of the support shaft passes through the frame, and an adjustment handle is attached to the end of the support shaft outside the frame, and the support shaft is rotated with respect to the frame. The sheet conveying apparatus according to claim 9, further comprising a lock unit that disables the sheet conveying device.   The sheet conveying apparatus according to claim 10, wherein an adjustment scale for measuring a rotation amount of the support shaft by the adjustment handle is provided.   The roller moving means has a support shaft disposed in the width direction of the sheet and supporting the plurality of brake rollers, and the plurality of brake rollers can be moved independently with respect to the support shaft. The sheet conveying apparatus according to claim 6, wherein   The second pressing member can be driven and rotated at a peripheral speed slower than that of the high-speed conveyor, and has a brush roller that presses the upper surface of the sheet with a brush provided in a predetermined region in the circumferential direction of the outer peripheral surface. The sheet conveying apparatus according to claim 1 or 2.   The sheet conveying apparatus according to claim 5, wherein the press timing adjustment unit includes a brush phase adjustment unit capable of adjusting a phase of the brush in the brush roller.   The presser timing adjusting means has drive control means capable of automatically adjusting the presser timing of the sheet by the first presser member or the second presser member, and the drive control means includes preset sheet data and / or printing. The sheet conveying apparatus according to claim 1, wherein the pressing timing by each pressing member is automatically adjusted based on data.   The presser timing adjusting means includes a drive control means capable of automatically adjusting the presser timing of the sheet by the first presser member or the second presser member, and the low speed after passing through the first presser member and the second presser member. A deviation detecting unit configured to detect a deviation of a sheet conveyed by the conveying conveyor, and the drive control unit automatically adjusts a pressing timing of each pressing member based on a detection result of the deviation detecting unit. The sheet conveying apparatus according to any one of claims 1 to 15.

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