JP2007070075A - Paper delivery device of sheet-fed rotary press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify structure for preventing the slacking of the center of a delivered sheet-like material to reduce a manufacturing cost. <P>SOLUTION: Suction wheels 10A, 10E out of five suction wheels 10A to 10E are kept to be attached to support members, and the remaining suction wheels are removed from the support members. Three air blow boxes 80A to 80C are attached to the support member from which the suction wheels are removed. A plurality of discharge ports 87A, 87B discharging air to the outside in a width direction of fed paper sheets and a lot of nozzles 88 discharging air upward are disposed to the air blow boxes 80A to 80C. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a discharge in a sheet-fed rotary printing press provided with a suction device provided on the upstream side of the paper stacking direction in the paper transport direction, which reduces the transport speed of a sheet as a sheet (hereinafter simply referred to as paper). It relates to the device.

  In this type of sheet-fed rotary printing machine, the paper printed by the printing unit is transferred from the impression cylinder nail to the discharge chain nail and conveyed, and the nail at the conveyance end is released and dropped. To be loaded on the paper stack. The paper transported by the paper discharge chain is only held at the tip by a nail, so when the paper bottom flutters or the paper is released and dropped, the paper moves when loaded due to the inertia of the paper running. The edges may not be aligned. In order to prevent this, a suction surface is provided on the upstream side of the paper stacking direction in the paper transport direction and below the paper to be transported so that the paper is sucked while being slidably contacted. A plurality of suction wheels rotating at a speed are arranged side by side in the width direction of the paper, and the running speed of the paper released from the claw holding state is reduced. When printing on both sides of the paper, if the suction wheel is positioned in the pattern printed on the back side of the paper, the suction line of the suction wheel damages the image area printed on the paper and the print quality deteriorates. Therefore, it is necessary to position the suction wheel in a non-printing area that is not printed.

  However, when there are no non-image areas other than both ends in the width direction of the paper or the number of the suction wheels is small, the number of suction wheels is limited, so that the central portion of the paper sags between the suction wheels. When this slack occurs, both ends of the paper come off from the suction wheel, so the paper transport speed cannot be sufficiently reduced, the paper flutters, and the paper edges are misaligned during loading, There was a problem that the printed surface was scratched by contact with the bracket of the suction wheel.

As a solution to this problem, a plurality of suction wheels provided in the width direction of the paper to be conveyed and at least a pair of both sides of the paper in the width direction of the paper below the paper in the width direction are provided. And a nozzle for discharging air to be blown up. In this apparatus, by directing the air discharge direction from the nozzle to the outside in the width direction of the paper, the paper sagging downward is corrected by the air layer formed by the air discharged from the nozzle, and the paper The two end portions of the motor are not detached from the suction wheel (see, for example, Patent Document 1).
JP 2000-95409 (paragraph “0005”, FIGS. 1 to 4)

  The above-described discharge device in the conventional sheet-fed rotary printing press has a structure in which a nozzle is provided in advance in addition to the suction wheel in order to prevent the paper from getting loose. This not only increases the number of parts, but also requires a hose for supplying the discharge air to the nozzle in addition to the hose for communicating the suction air to the suction wheel, making the structure complicated and manufactured. There was a problem of increased costs.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to simplify the structure for preventing the sheet-like material from being sunk and to reduce the manufacturing cost. It is in providing the discharge apparatus in a sheet-fed rotary printing press.

  In order to achieve this object, the invention according to claim 1 is provided on the upstream side in the sheet conveyance direction of the paper stack and below the sheet material to be conveyed, and slides the sheet material. In a sheet discharge apparatus in a sheet-fed rotary printing press having a suction surface that sucks while contacting, and provided with a plurality of suction means in the width direction of the sheet-like material, suction means other than the suction means located at both ends, Any one of discharge means for discharging air to the outer side in the width direction of the conveyed sheet-like material is selectively provided on the support member, and when the suction means is provided on the support member, suction air is supplied to the suction means. When the discharge means is provided on the support member, discharge air is communicated with the discharge means.

  The invention according to claim 2 is the invention according to claim 1, wherein the attachment structure of the suction means other than the suction means located at both ends is the same as the attachment structure of the discharge means to the support member. It is.

  According to a third aspect of the present invention, in the first aspect of the invention, an intake source that communicates suction air to the suction means, an air supply source that communicates discharge air to the discharge means, and the suction means from the intake source And a switching means for switching so as to communicate the discharge air from the air supply source to the discharge means.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, air is discharged outward from the center of the sheet-like material to which the discharge means is conveyed.

  The invention according to claim 5 is the invention according to claim 1, wherein the suction means is a suction wheel.

  According to the first aspect of the present invention, since the suction means and the discharge means are selectively attached to the support member, it is not necessary to previously provide the discharge means in addition to the suction means, so that the structure is simplified. Can be

  According to the second aspect of the present invention, since two types of attachment structures for the suction means and the discharge means are not required, the structure can be simplified and the number of parts can be reduced.

  According to the third aspect of the present invention, the air can be communicated to the suction unit and the discharge unit using a common pipe, so that the structure can be simplified and the manufacturing cost can be reduced.

  According to the invention of claim 4, it is possible to prevent the slack more reliably.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an outline of a sheet discharge device of a sheet-fed rotary printing press according to the present invention, FIG. 2 is a plan view showing the main part, FIG. 3 is a front view showing the main part, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 5, FIG. 5 is a view taken along the arrow V in FIG. 2, FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 9 is a sectional view showing a state in which the box is attached to the support member, FIG. 9 shows a state in which the air blowing box is attached to the paper discharge device of the sheet-fed rotary printing press according to the present invention, and FIG. FIG. 10B is a front view of the main part, and FIG. 10 is a model diagram for explaining switching of air communication.

  In FIG. 1, a sheet discharge device of a sheet-fed rotary printing press denoted as a whole by reference numeral 1 includes a pair of left and right discharge frames 2, and a sprocket 3 is pivotally supported on each discharge frame 2. A pair of left and right discharge chains 4 are stretched between these sprockets 3 and a sprocket on the printing unit side (not shown). A plurality of sets of claw devices 5 (hereinafter referred to as “claws 5”) each formed of a claw and a claw base schematically shown in the figure are provided on each claw cage supported between the left and right paper discharge chains 4 at a predetermined interval. The paper 6 that is arranged side by side and is carried by the running of the paper discharge chain 3 after printing is released from the claw 5 and is dropped on the upstream side of the sprocket 3 in the paper conveyance direction. It is configured.

  Reference numeral 7 denotes a paper platform that is suspended at four corners by four lifting chains 8, and is lifted by forward / reverse rotation of a motor (not shown). A flat rectangular pallet 9 having a hole that can be inserted is placed. Reference numeral 10 denotes a suction means as a suction wheel provided on the upstream side (in the direction of arrow B) of the paper stack 7 in the paper transport direction, and below the paper 6 to be transported, as shown in FIG. Five (10A to 10E) are arranged in parallel in the width direction (arrow CD direction) of the paper 6 being conveyed, that is, in the direction orthogonal to the paper 6 conveyance direction (arrow AB direction). Reference numeral 11 denotes a paper pad for bringing the front end of the falling paper 6 into contact with each other.

  In FIG. 2, 13A and 13B are left and right sub-frames, and two stays 14 and 15 are laid across the sub-frames 13A and 13B. A drive shaft 16 is rotatably supported between the subframes 13A and 13B and is rotated by a motor (not shown). Reference numerals 17A and 17B denote screw shafts, which are rotatably supported by the right subframe 13B and a support stay 18 attached between the stays 14 and 15, and are left in a state where movement in the axial direction is restricted. Is extended in the direction of the subframe 13A. By manually rotating the portions protruding from the right subframe 13B of the screw shafts 17A, 17B in the forward and reverse directions, the suction means 10A, 10B, 10D, 10E and the discharge means 80A, 80C described later are moved to the arrow C. -Move in direction D.

  Reference numeral 19 denotes a rotating shaft rotatably supported between the left and right sub-frames 13A and 13B. By rotating in the forward and reverse directions by a motor (not shown), pinions 20 and 20 are attached to both ends. The sub-frames 13A and 13B move in the arrow AB direction with respect to the paper discharge frames 2 and 2 through the rack (not shown). Reference numeral 21 denotes a paper pad for bringing the trailing edge of the paper 6 falling on the paper stack 9 into contact with each other, and is provided with a number of air vent holes 21a, and the stay 21 extends in the direction of the arrow CD. 14 is attached.

  In FIG. 3, reference numeral 22 denotes a detecting piece for detecting the upper limit of the paper stack 7, and one end of the detecting piece is supported by a block 22 a supported by the stay 14 around the small shaft 23 as a swinging center. . When the pallet 9 of the paper stack 7 that has been raised contacts the detection piece 22, the detection piece 22 detects this and stops the rise of the paper stack 7, and the suction means 10 and the like are pushed up by the pallet 9. There is no such thing.

  Next, the suction means 10A to 10E and the supporting members 25A to 25E to which the suction means 10A to 10E are attached will be described with reference to FIGS. Since the five suction means 10A to 10E and the support members 25A to 25E have the same basic structure, only the suction means 10E and the support member 25E will be described here, and other suction means may be used as necessary. The means 10A to 10D and the support members 25A to 25D will also be described.

  In FIG. 4, reference numeral 25E denotes a support member formed in a flat block shape, and is supported so as to be movable in the width direction (arrow CD direction) of the paper 6 conveyed by the stays 14 and 15. A screw hole 28 is screwed in the mounting surface 27 that is the upper surface. 26E is a supported member provided with suction means 10E and formed in a flat block shape, and is provided with an insertion hole 29 penetrating vertically. The supported member 26 is attached to the support member 25 by bringing the lower surface 30 into contact with the attachment surface 27 of the support member 25E and screwing the bolt 31 inserted through the insertion hole 29 into the screw hole 28.

  As shown in FIG. 6, the support member 25E is provided with a large-diameter through-hole 32 and two small-diameter through-holes 33, 33 (one through-hole 33 is not shown). The drive shaft 16 is formed larger than the outer diameter, and a bearing 34 is provided on the inner periphery. A sleeve 35 is inserted into the drive shaft 16 and is rotatably supported in the through hole 32 of the support member 25E via a bearing 34. The sleeve 35 is integrated with the drive shaft 16 by tightening a set screw 36. Rotate. A drive gear 37 is sandwiched between a ring-shaped sliding member 38A fitted to the drive shaft 16 and one end face of the sleeve 35, and is attached to one end face of the sleeve 35 by a bolt. .

  Reference numeral 40 denotes a retaining member attached to the other end portion of the sleeve 35 by a set screw. The support member 25E is sandwiched between the step portion 42 formed on the sleeve 35 and the support member 25E is indicated by an arrow CD. The sleeve 35 is also configured to move integrally when moving in the direction. A sliding member 38 </ b> B fitted to the drive shaft 36 is attached to the outer surface of the retaining member 40.

  Reference numeral 42 denotes a mover formed in a substantially cylindrical shape, and a screw portion 42a provided on the inner peripheral portion is screwed to the screw shaft 17B and is fitted into the through hole 33 of the support member 25E. The moving member 42 has a support member 25E sandwiched between a ring member 43 and a stepped portion 42b that are pivotally attached to one end thereof. As the moving member 42 moves in the direction of arrow CD, the support member 25E also has an arrow C. -Moves integrally in the D direction. As shown in FIG. 5, the other screw shaft 17A is provided with a mover 44 having the same function as the mover 42. By rotating the screw shafts 17A and 17B, the movers 42 and 44 are rotated. The support member 25E moves integrally in the direction of the arrow CD through the. In FIG. 4, 45 is an air passage that penetrates between the upper surface and the side surface of the support member 25E, and is provided with an upper end opening 45a and a lower end opening 45b, and a hose joint 46 is attached to the lower end opening 45b. It has been.

  In FIG. 6, reference numeral 50 denotes a shaft implanted in the supported member 26, and a large-diameter pulley 52 is rotatably supported on the shaft 50 via a bearing 51. The gear 54 is rotatably supported through the. The gear 54 is attached to the end surface of the large-diameter pulley 52 with a bolt, and the bolt 56 that is screwed to the end surface of the shaft 50 via the washer 55 restricts the large-diameter pulley 52 and the gear 54 from coming off from the shaft 50. ing.

  In FIG. 5, reference numerals 60 and 61 denote shafts implanted in the upper portion of the supported member 26, and small-diameter pulleys 62 and 63 are rotatably supported by the shafts 60 and 61 through bearings. As shown in FIG. 6, the small-diameter pulleys 62 and 63 are prevented from being removed from the shafts 60 and 61 by retaining members 64 and 65. Between the small-diameter pulley 62 and the small-diameter pulley 63 and the above-described large-diameter pulley 52, a suction belt 66 having a large number of suction ports 66a on the peripheral surface is stretched.

  As shown in FIG. 5, an air duct 67 is provided between the small-diameter pulley 62 and the small-diameter pulley 63 so as to face the suction belt 66, and the air duct 67 opens so that the upper side facing the suction belt 66 opens. Is formed in a U-shaped cross section. The air duct 67 is connected to suction air from an intake source 101 described later, thereby forming a suction surface for suctioning the portion 66b of the suction belt 66 facing the air duct 67 while sliding the paper 6 being conveyed. To do. An air passage 68 is provided below the air duct 67 and penetrates the supported member 26 in the vertical direction. An upper end opening 68 a communicates with a communication hole 67 a provided at the bottom of the air duct 67. A lower end opening 68 b is provided on the lower surface 30.

  As described above, the lower surface 30 of the supported member 26E is brought into contact with the mounting surface 27 of the supporting member 25E, the bolt 31 having the insertion hole 29 inserted therein is screwed into the screw hole 28, and the supported member 26E is supported by the supporting member. By attaching to 25E, as shown in FIG. 4, the upper end opening 45a of the air passage 45 and the lower end opening 68b of the air passage 68 are in contact with each other, and the air passage 45 and the air passage 68 are communicated with each other. At the same time, the drive gear 37 of the support member 25E meshes with the gear 54 of the supported member 26E.

  In FIG. 5, a belt 70 is provided below the paper discharge chain 4 and guides the paper 6 that is carried by the claw 5, and includes a driven roller 71, a driving roller and a tension roller (not shown). And travels at the same speed as the travel speed of the paper discharge chain 4.

  Next, air blowing boxes 80A to 80C as discharge means will be described with reference to FIGS. Since these three air blowing boxes 80A to 80C have the same basic structure, only the air blowing box 80C will be described here, and the other air blowing boxes 80A and 80B will be described as appropriate. . As shown in FIG. 7, the air blowing box 80 </ b> C is configured by a base 81 having a trapezoidal cross section and a hollow body 82 attached on the base 81. It is elongated and is provided with a hollow portion 83. The base 81 is provided with an air passage 84 having an upper end communicating with the hollow portion 83 of the hollow body 82 and a lower end opening 84a at the lower end, and an insertion hole 85 through which the bolt 31 described above is inserted. The base 81 has the lower surface 86 in contact with the mounting surface 27 of the support member 25E described above, and the bolt 31 inserted through the insertion hole 85 is screwed into the screw hole 28 of the support member 25E, thereby supporting the support member 25E. Mounted on top.

  On the upper surface of the hollow body 82, there are five air outlets 87B for blowing air to the outside in the width direction (arrow D direction) of the paper 6 to be conveyed, and a number of small-diameter outlets 88 for discharging air upward. A pair of screw holes 89 and 89 are provided in the front surface portion. In FIG. 8, reference numeral 90 denotes a guide member having a cross section formed in an arc shape by a thin plate, one end portion thereof being bent, and a bent portion 90 a screwed into the screw hole 89 of the hollow body 82. Is attached to the front surface of the hollow body 82. The lower end of the guide member 90 attached to the hollow body 82 faces the paper pad 21.

  The air blowing boxes 80B and 80C differ from the air blowing box 80A described above in the direction of the air discharged from the air blowing port 87. That is, the five air outlets 87A provided in the air blowing box 80A are all directed in the direction of arrow C as shown in FIG. The air blowing box 80B is provided with four air blowing holes 87A and 87B. Of these, the two left air blowing holes 87A and 87A are directed in the direction of the arrow C, and the two right air blowing airs. The air outlets 87B and 87B are oriented in the direction of arrow D.

  What is generally indicated by reference numerals 100A to 100E in FIG. 10 is five air supply devices for communicating discharge air or suction air to the support members 25A to 25E. Reference numeral 101 denotes one intake source that communicates suction air in common with the suction means 10A to 10E described above via the support members 25A to 25E. Reference numeral 102 denotes one air supply source that communicates discharge air in common with the air blowing boxes 80A to 80C via the support members 25A to 25E. Reference numeral 103 denotes switching means, which includes an air suction passage 105 connected to the intake source 101 via a hose 104, an air blowing passage 107 connected to the air supply source 102 via a hose 106, and a common hose 108. And an air supply passage 109 connected to the hose joint 46 described above.

  Reference numeral 110 denotes a switching valve, which includes a notch 110a formed in a half-moon shape in cross section. The notch 110a communicates the air suction passage 105 and the air supply passage 109 at a position indicated by a two-dot chain line in the figure. The air blowing passage 107 and the air supply passage 109 are communicated with each other at a position indicated by a solid line rotated by approximately 90 ° from this position. Reference numeral 111 denotes a lever formed in a U-shape, and a central portion is swingably supported around a shaft 112 planted in the device fixing portion. An operation lever 113 is attached to one end portion of the lever 111, and one end portion of the connecting bar 114 is pivotally attached to the other end portion. Reference numeral 115 denotes a switching lever implanted in the switching valve 110, and a tip end portion is pivotally attached to the other end portion of the connecting bar 114.

  Next, a paper discharge operation in the paper discharge device of the sheet-fed rotary printing press configured as described above will be described. First, the case where the conveyance speed of the paper discharged by the five suction units 10A to 10E is reduced will be described. In this case, the supported member 26 is attached to the attachment surfaces 27 of the support members 25A to 25E of all the suction means 10A to 10E with bolts 31, as shown in FIG. In this state, the operation levers 113 of all the air supply devices 100A to 100E are rotated counterclockwise as shown by the two-dot chain lines in FIG. To communicate. Accordingly, since suction air is communicated with the air passages 45 of the support members 25A to 25E of all the suction means 10A to 10E, suction is performed to the air passages 68 of the supported members 26A to 26E communicating with the air passage 45. Air is communicated. Since the suction air communicated with each air passage 68 is communicated with the air duct 67, the paper 6 conveyed to the suction surface 66b of the suction belt 66 facing the air duct 67 is sucked.

  When a motor (not shown) is driven and the drive shaft 16 is rotated, the sleeve 35 of the support members 25A to 25E is rotated in FIG. 6, and the drive gear 37 is rotated integrally with the rotation, and meshes with this. The gear 54 of the supported members 26A to 26E rotates. Accordingly, since the large-diameter pulley 52 rotates integrally, the suction belt 66 stretched between the large-diameter pulley 52 and the small-diameter pulleys 62 and 63 is slightly slower than the conveyance speed of the paper 6 in the arrow A direction. Drive on. Further, the belt 70 travels at substantially the same traveling speed of the paper discharge chain 4 in the direction of arrow A by driving a motor (not shown).

  Accordingly, the paper 6 that is dropped by the nail 5 being released at the conveyance end portion of the paper discharge device 1 is reduced in traveling speed by the paper bottom being sucked and brought into sliding contact with the suction surfaces 67b of the five suction belts 67. Then, it is loaded on the pallet 9 of the paper stack 7.

  Next, when this paper discharge device is used from single-sided printing to double-sided printing, and the number of non-image line parts is limited and the non-image line part is not provided at the center in the width direction of the paper 6, it is provided. However, if the width of the non-image portion is narrow, the suction means 10B, 10C, 10D located at the center in the width direction of the paper 6 to be conveyed cannot be provided, and instead the air blowing boxes 80A, 80B. , 80C will be described. In this case, first, the bolts 31 that attach the supported members 26B, 26C, and 26D to the supporting members 25B, 25C, and 25D are unscrewed, and the supported members 26B, 26C, and 25D are supported from the supporting members 25B, 25C, and 25D. The suction means 10B, 10C, and 10D are removed together with 26D. Next, the air blowing boxes 80A, 80B, 80C are attached to the support members 25B, 25C, 25D with bolts 31, respectively.

  In this state, the operation levers 113 of the air supply devices 100A and 100E are rotated counterclockwise as shown by a two-dot chain line in FIG. Let Accordingly, since the suction air is communicated with the suction means 10A and 10E, the suction air is communicated with the suction belt 66 of each suction means 10A and 10E. At the same time, the air blowing passages 107 and the air supply passages 109 are made to communicate with each other by rotating the operation levers 113 of the air supply devices 100B, 100C, and 100D in the clockwise direction as shown by solid lines in FIG.

  Accordingly, since the discharge air is communicated with the air passages 45 of the support members 25B, 25C, 25D, the discharge air is communicated with the air passages 84 of the air blowing boxes 80A, 80B, 80C communicating with the air passage 45. The The discharge air communicated with each air passage 84 is discharged from each air blowing port 87, 87A, 87B and each discharge port 88 of each air blowing box 80A, 80B, 80C. When the motor (not shown) is driven to rotate the drive shaft 16, the suction belt 66 of the suction means 10A, 10E attached to the support members 25A, 25E is slightly slower than the conveyance speed of the paper 6 in the direction of arrow A. Drive on.

  When a paper discharge operation is performed in this state, the air of the three air blowing boxes 80A, 80B, and 80C is placed below the paper 6 that is dropped by the nail 5 being released at the conveyance end of the paper discharge device 1. An air layer that flows outward in the width direction of the paper 6 is formed by the air discharged from the blowing ports 87A and 87B. By this air layer, the paper 6 is transported while being held in a slightly lifted state from the air blowing boxes 80A, 80B, 80C. The suction belts 66 and 66 of 10A and 10E do not come off. For this reason, since the conveyance speed of the paper 6 can be sufficiently reduced, the paper 6 does not flutter, the paper is not aligned properly at the time of stacking, or the printing surface is damaged due to contact with the bracket of the suction wheel. There is no such thing as sticking.

  Further, since the discharge port 88 is provided in the air blowing boxes 80A, 80B, 80C, and the air is discharged to the side of the paper 6 conveyed from the discharge port 88, that is, upward, the paper 6 is lifted by this air. By doing so, drooping in the paper 6 can be reliably prevented. Since the rear end portion of the paper 6 sucked by the suction means 10A and 10E and reduced in conveying speed is guided to the paper pad 21 by the guide member 90, the paper 6 is smoothly and reliably stacked on the pallet 9. .

  As described above, since the suction means 10B to 10D and the air blowing boxes 80A to 80C are selectively attached to the support members 25B to 25D, it is not necessary to previously provide a discharge means in addition to the suction means. Therefore, the structure can be simplified. Further, the attachment structure of the suction means 10B to 10D to the support members 25B to 25D and the attachment structure of the discharge means 80A to 80C to the support members 25B to 25D are both performed by the bolts 31 screwed into the screw holes 28 of the support members. It has the same mounting structure. For this reason, since two types of mounting structures are not required, the structure can be simplified and the number of parts can be reduced. Further, by providing the switching means 103 for switching the air communication from the suction source 101 and the air supply source 102 to the suction means 10 and the discharge means 80, the common hose 108 can be used to switch between the suction means 10 and the discharge means 80. Therefore, the structure can be simplified and the manufacturing cost can be reduced.

  In the present embodiment, an example has been described in which there are three ejection units 80A to 80C, but the center may be a suction unit and the left and right pair may be ejection units. Further, the interval between the discharge means 80 and the suction means 10 in the width direction of the transported paper 6 may be adjusted according to the size of the paper 6, and the longitudinal dimensions of the air blowing boxes 82A to 82C may also be adjusted. You may change according to the size.

1 is a side view illustrating an outline of a paper discharge device of a sheet-fed rotary printing press according to the present invention. It is a top view which shows the outline of the paper discharge apparatus of the sheet-fed rotary printing press which concerns on this invention. It is a front view which shows the principal part of the paper discharge apparatus of the sheet-fed rotary printing machine which concerns on this invention. It is the IV-IV sectional view taken on the line in FIG. FIG. 3 is a V arrow view in FIG. 2. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. FIG. 3 is a perspective view showing an appearance of an air blowing box in the sheet discharge device of the sheet-fed rotary printing press according to the present invention. FIG. 3 is a cross-sectional view showing a state in which an air blowing box is attached to a support member in the sheet discharge device of the sheet-fed rotary printing press according to the present invention. The state which attached the air blowing box to the paper discharge apparatus of the sheet-fed rotary printing machine which concerns on this invention is shown, The figure (A) is a top view of the principal part, The figure (B) is a front view of the principal part. FIG. 5 is a model diagram for explaining switching of air communication in the sheet discharge device of the sheet-fed rotary printing press according to the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Sheet discharge device of sheet-fed rotary printing machine, 6 ... Sheet paper, 10, 10A thru | or 10E ... Suction means, 25A thru | or 25E ... Support member, 26A thru | or 26E ... Supported member, 27 ... Mounting surface, 28 ... Screw Holes 29, 85 ... insertion holes, 31 bolts, 66 ... suction belts, 66b ... suction surfaces, 80A to 80C ... air blowing boxes (discharge means), 81 ... base, 82A to 82C ... hollow bodies, 87A, 87B DESCRIPTION OF SYMBOLS ... Air blowing port, 88 ... Discharge port, 90 ... Guide member, 100 ... Air supply means, 101 ... Intake source, 102 ... Air supply source, 103 ... Switching means, 108 ... Common hose.

Claims (5)

Width direction of the sheet-like material provided on the upstream side of the sheet-like material conveyance direction of the paper stack and on the lower side of the conveyed sheet-like material, and having a suction surface for sucking the sheet-like material while sliding In a paper discharge device in a sheet-fed rotary printing press provided with a plurality of suction means in
The support member is selectively provided with any one of suction means other than the suction means located at the both ends, and discharge means for discharging air to the outside in the width direction of the sheet-like material being conveyed,
When the suction means is provided on the support member, suction air is communicated with the suction means, and when the discharge means is provided on the support member, discharge air is communicated with the discharge means. A sheet discharge device in a sheet-fed rotary printing press. In the sheet discharge apparatus in the sheet-fed rotary printing press according to claim 1,
A paper discharge device for a sheet-fed rotary printing press, wherein the attachment structure of the suction means other than the suction means located at both ends to the support member is the same as the attachment structure of the discharge means to the support member. . In the sheet discharge apparatus in the sheet-fed rotary printing press according to claim 1,
An intake source for communicating suction air to the suction means;
An air supply source for communicating discharge air to the discharge means;
The sheet-fed rotary printing press includes: a switching unit configured to communicate suction air from the intake source to the suction unit or to switch ejection air from the air supply source to the discharge unit. Paper device. In the sheet discharge apparatus in the sheet-fed rotary printing press according to claim 1,
A paper discharge device in a sheet-fed rotary printing machine, wherein the discharge means discharges air outward from a central portion of a sheet-like material to be conveyed. In the sheet discharge apparatus in the sheet-fed rotary printing press according to claim 1,
A paper discharge device in a sheet-fed rotary printing machine, wherein the suction means is a suction wheel.

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