JP6198291B2 - Sheet guiding apparatus and sheet processing apparatus provided with the apparatus - Google Patents

Description

  The present invention relates to a guide device for a sheet held and conveyed by a sheet holding device provided in a conveyance chain, and a sheet processing apparatus including the device.

  An example of this type of guidance device is disclosed in Patent Document 1. This is a sheet guide provided to guide a sheet conveyed while being held by a claw provided in the conveyance chain.

  However, since the sheet guide is provided outside the sheet conveyance path, the outer surface of the sheet comes into contact with the sheet guide. For example, the outer surface of the sheet conveyed by the nail plate is inspected by an inspection device. Or a process such as printing cannot be performed on the sheet.

  Japanese Patent Application Laid-Open No. 2004-228561 describes an apparatus that guides the inner surface of a sheet conveyed on an arc-shaped locus by a conveying chain with a guide device and inspects the outer surface of the sheet with an inspection device.

Utility Model Registration No. 2576838 JP 2010-22214 A

  Incidentally, as in Patent Document 1, it is a normal configuration that there is a certain distance (interval) between the travel path of the transport chain and the transport path of the sheet by the claw. Therefore, when the travel route of the transport chain is a linear travel route portion, the travel speed of the transport chain is equal to the transport speed of the sheet, but when the travel route of the transport chain is an arc-shaped travel route portion, Since the radius of curvature of the arcuate travel path portion of the transport chain is different from the radius of curvature of the arcuate transport path portion of the sheet, the travel speed of the transport chain and the sheet transport speed are different.

  In particular, as in Patent Document 1, when the arcuate conveyance path portion of the sheet is located outside the arcuate travel path portion of the conveyance chain, the sheet conveyance speed of the sheet is increased in the arcuate conveyance path portion of the sheet. It will be faster than the running speed. When the linear conveyance path portion follows the arcuate conveyance path portion of the sheet, the speed of the front end of the sheet is the same as the speed of the conveyance chain, and the speed of the rear end of the sheet is higher than the speed of the conveyance chain. A state is made.

  As described above, when the speed on the rear end side of the sheet is increased, the sheet is slackened. When a guide device (sheet guide) is provided on the inner side of the sheet conveyance path as in Patent Document 2, the looseness of the sheet causes the sheet to flutter, causing the sheet to be scratched or distorted, and the sheet to flutter. Has also made the sheet on the sheet guide unstable, and could hinder accurate inspection by an inspection apparatus (camera).

  Accordingly, the present invention provides a sheet guide device capable of stably conveying a sheet at a location where the arcuate travel path portion of the transport chain transitions from the arcuate travel route portion, and a sheet processing apparatus including the device. The purpose is to do.

In order to achieve such an object, a sheet guiding apparatus according to the present invention includes:
A sheet holding device that has a holding portion that is provided in the conveyance chain and holds an end portion of the sheet, and that conveys the sheet along a conveyance path of the sheet by the holding unit that is separated from the traveling path of the conveyance chain;
It has a guide surface along the arcuate conveyance path part in the conveyance path of the sheet formed on the outer side of the arcuate travel path part by traveling along the arcuate travel path part in the travel path of the conveyance chain, and is conveyed. A guide to guide the seat,
In a sheet guide device comprising:
A linear travel path formed on the downstream side in the travel direction of the transport chain of the arc-shaped travel path;
Guiding means for guiding a sheet in a region downstream in the sheet conveying direction from a transition position from the arcuate travel path part to the linear travel path part, inward of the linear travel path part;
Equipped with a,
The guide means includes sheet contact means for closely contacting the sheet to the guide surface of the guide,
The sheet contact means places a sheet in a region downstream in the sheet conveying direction from a position of transition from the arcuate travel path part to the linear travel path part to the inside of the linear travel path part of the guide. It is closely attached to the positioned guide surface,
The guide surface of the guide is a rotating body that is formed in an arc shape and rotates at a circumferential speed that is substantially the same as the conveyance speed of the sheet conveyed by traveling along the arcuate conveyance path portion of the holding portion in the sheet holding device,
The sheet contact means includes suction means for sucking a sheet in a region downstream of the transition position of the guide surface formed in the arc shape in the sheet conveyance direction,
The suction unit sucks a sheet also in a region upstream of the transition position in the sheet conveyance direction .

In order to achieve such an object, a sheet guiding apparatus according to the present invention includes:
A sheet holding device that has a holding portion that is provided in the conveyance chain and holds an end portion of the sheet, and that conveys the sheet along a conveyance path of the sheet by the holding unit that is separated from the traveling path of the conveyance chain;
It has a guide surface along the arcuate conveyance path part in the conveyance path of the sheet formed on the outer side of the arcuate travel path part by traveling along the arcuate travel path part in the travel path of the conveyance chain, and is conveyed. A guide to guide the seat,
In a sheet guide device comprising:
A linear travel path formed on the downstream side in the travel direction of the transport chain of the arc-shaped travel path;
Guiding means for guiding a sheet in a region downstream in the sheet conveying direction from a transition position from the arcuate travel path part to the linear travel path part, inward of the linear travel path part;
With
The guide means includes sheet contact means for closely contacting the sheet to the guide surface of the guide,
The sheet contact means places a sheet in a region downstream in the sheet conveying direction from a position of transition from the arcuate travel path part to the linear travel path part to the inside of the linear travel path part of the guide. It is closely attached to the positioned guide surface,
The guide surface of the guide is a rotating body that is formed in an arc shape and rotates at a circumferential speed that is substantially the same as the conveyance speed of the sheet conveyed by traveling along the arcuate conveyance path portion of the holding portion in the sheet holding device,
The sheet contact means includes a suction means for sucking a sheet in a region upstream of the transition position of the guide surface formed in the arc shape and the transition position of the guide surface formed in the arc shape. And air blowing means for blowing air onto the sheet so that the sheet is in close contact with the guide surface in a region downstream of the sheet conveying direction.

In order to achieve such an object, a sheet processing apparatus according to the present invention includes:
In the sheet processing apparatus provided with the sheet guide device,
A processing device for processing a sheet on a guide surface of the guide along the arcuate conveyance path;
It is characterized by that.

  According to the sheet guide device of the present invention, the sheet slack portion caused by the difference in the sheet conveyance speed at the position where the arcuate travel path portion of the transport chain travel path transitions to the linear travel path portion causes the guide means to flutter. Therefore, the sheet can be conveyed smoothly and stably.

  According to the sheet processing apparatus of the present invention, processing can be performed with high accuracy under stable conveyance of a sheet.

It is a plane sectional view of a delivery barrel part showing one example of the present invention. It is a principal part expanded sectional view of FIG. It is a III arrow line view of FIG. 1 similarly. FIG. 4 is a view taken along arrow IV in FIG. 1. It is a principal part enlarged side view of a 4 color double-sided simultaneous printing offset machine similarly. It is an operation explanatory view of the same suction guide. It is an operation explanatory view of the same suction guide.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a sheet guide apparatus and a sheet processing apparatus including the apparatus according to the present invention will be described in detail with reference to the drawings.

  1 is a cross-sectional plan view of a delivery barrel according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the main part of FIG. 1, FIG. 3 is a view taken along the arrow III in FIG. FIG. 5 is an enlarged side view of the main part of the four-color double-sided simultaneous printing offset machine, FIG. 6A is an explanatory view of the action of the suction guide, and FIG. 6B is an explanatory view of the action of the suction guide.

  As shown in FIG. 5, in the printing unit 1 of the four-color double-sided simultaneous printing offset machine, a rubber cylinder 2 provided with a paper holding device (not shown) and a rubber cylinder 3 not provided with a paper holding device are substantially horizontal. Each peripheral surface is in contact with each other. Further, the rubber cylinder 3 is located on the side of the rubber impression cylinder 2 and comes into contact therewith, the rubber impression cylinder 2 is on the paper discharge section (not shown) side, and the rubber cylinder 3 is on the paper feed section (not shown) side. It is arranged.

  Four plate cylinders 4 are arranged on the peripheral surface of the rubber cylinder 2, and four plate cylinders 5 are also arranged on the peripheral surface of the rubber cylinder 3. Ink units 6 and 7 are movably provided so as to be able to approach and leave the plate cylinders 4 and 5 so that ink and water can be supplied in contact with the plate cylinders 4 and 5.

  Further, a paper holding device (not shown) is provided above the rubber impression cylinder 2 which is upstream of the printing position P1 where the rubber impression cylinder 2 and the rubber cylinder 3 are in contact with each other in the rotation direction. In addition, four transfer cylinders 9 to 12 for delivering paper (sheet) W (see FIGS. 6A and 6B) from the register 8 to the rubber impression cylinder 2 are disposed, and the rubber impression cylinder is more than the printing location P1. A transfer cylinder 13 is provided below the rubber impression cylinder 2 on the downstream side of the rotation direction 2 and includes a paper holding device and delivers the paper W from the rubber impression cylinder 2 to the delivery chain (conveyance chain) 20.

  The registration unit 8 is supplied with paper W from a paper supply unit via a feeder board 14, while the transfer cylinder 13 is provided with a delivery chain 20 provided with a claw (sheet holding device) 22 (see FIG. 2 and the like). Then, the paper W is conveyed onto a paper discharge pile (not shown) of the paper discharge unit. That is, the delivery cylinder 21 on the upstream side in the paper transport direction of the delivery chain 20 contacts the lower side of the transfer cylinder 13, and the paper W is delivered from the transfer cylinder 13.

  In addition, the delivery chain 20 has a delivery cylinder 21 on the upstream side disposed below the rubber cylinder 2 so that the delivery cylinder 20 does not cross the space below the contact point between the rubber cylinder 2 and the rubber cylinder 3. It is arranged along the floor on the right side in the figure toward the paper discharge unit side than 21.

  In the illustrated example, the rubber impression cylinder 2 and the rubber cylinder 3 are triple cylinders, the four transfer cylinders 9 to 12, the four printing cylinders 4, the four printing cylinders 5, the transfer cylinder 13 and the delivery cylinder 21 are 1 time. Each is composed of a torso.

  An inspection camera (processing device) detects on the delivery cylinder 21 the printing state of one surface of the paper W that is transferred from the paper holding device of the transfer cylinder 13 to the nail cage 22 of the delivery chain 20 and conveyed. A pair of illuminators 24 and 23 are disposed on the paper feed unit side of the delivery cylinder 21 and are disposed obliquely downward so as to face the axis of the delivery cylinder 21. As the inspection camera 23, an optical / electronic photographing apparatus such as a CCD-line camera or a CCD-line sensor is employed.

  A first air spray nozzle (air spray means: sheet contact means: guide means) 25 is disposed adjacent to the upstream side of the pair of illuminators 24 in the paper conveying direction, and the pair of illuminators 24. A second air spray nozzle (air spray means: sheet contact means: guide means) 26 is disposed in the vicinity of the downstream side in the paper transport direction. In FIG. 5, reference numeral 27 denotes a paper guide for guiding the paper W immediately after the transfer from the delivery cylinder 21 to the delivery chain 20.

  The first air blowing nozzle 25 blows compressed air sent from a compressed air supply source such as a compressor (not shown) toward the body circumferential surface (guide surface) of the delivery cylinder 21, and the second air blowing nozzle Reference numeral 26 denotes a linear travel path portion C1a (see FIG. 3) in the travel path (delivery chain trajectory: transport chain travel path) C1 of the delivery chain 20 using compressed air sent from a compressed air supply source such as a compressor (not shown). ) Is sprayed along.

  The inspection camera 23, a pair of illuminators 24, a first air blowing nozzle 25, a second air blowing nozzle 26, and a paper guide 27 are supported by a pair of left and right machine frames 28 via a support rod (not shown). Is done.

  As shown in FIGS. 1 and 2, the delivery cylinder 21 is rotatably supported by a pair of left and right machine frames 28 via bearings 31 at both left and right ends of a shaft 30, respectively. The rotational force of a driving motor (not shown) is transmitted to a gear 32 fixed to the shaft end via a gear train 33 so as to be rotated.

  Further, sprockets 34 are fixed to both ends of the shaft 30 via the keys 35 located in the machine frame 28, and between a pair of left and right sprockets provided on the end side of a paper discharge unit (not shown). The aforementioned delivery chain 20 is hung around. Between the pair of left and right delivery chains 20, a plurality of the above-described claw hooks 22 are spanned at predetermined intervals in the chain longitudinal direction. In FIG. 1, reference numeral 36 denotes a chain guide.

  In this embodiment, a suction guide (suction means: sheet contact means: guide means) 40 is provided on the shaft 30 positioned between the pair of left and right sprockets 34.

  That is, as shown in FIGS. 3 and 4, four support legs 41 are implanted on the inner surfaces of the left and right machine frames 28, and the semicircular arc portion 42 a is pivoted on these support legs 41. The base end portion 42 b of the support plate 42 surrounded by a gap over approximately half a circumference of 30 is coupled by a bolt 43.

  On the inner surface of the support plate 42, a base end portion 44 b of a suction duct 44 in which a semicircular arc-shaped portion 44 a is surrounded by a minute gap around a substantially half circumference of the shaft 30 is supported by two reamer bolts 45. In contrast, it is movably coupled in the barrel axis direction. That is, a gap H (see FIG. 2), which is a so-called movement allowance, is set between the head of the reamer bolt 45 and the stepped surface of the suction duct 44 through which the shaft portion of the reamer bolt 45 is inserted, and the support plate 42. Between the opposing surfaces of the suction duct 44, the compression coil springs 46 are mounted through the spring receiving holes 42c and 44c in four places. Therefore, the suction duct 44 is always urged away from the support plate 42 and its side surface is pressed against the side surface of the ring-shaped end plate 51 in the suction cylinder (rotating body) 50 described later. .

  A suction groove 47a is formed on the inner surface of the semicircular arc portion 44a in the suction duct 44 along the shape of the semicircular arc portion 44a over substantially the entire length, and the suction groove 47a is formed at the base end portion 44b. Is communicated with a communication hole 47b formed in the interior. This communication hole 47b is connected to a suction hose 49 via a joint 48 and communicates with a negative pressure source such as a vacuum pump (not shown).

  The left and right both end plates 51 constituting the suction cylinder 50 are fixed to the shaft 30 via a key 52 at positions adjacent to the suction duct 44, respectively. An arcuate guide plate (guide) 53 having a length corresponding to 3/4 rounds, specifically, a length on which a maximum length sheet to be conveyed can be placed is installed. The guide plate 53 is a transport path (sheet transport path) of the paper W formed on the outer side of the arc-shaped travel path portion C1b by traveling along the arc-shaped travel path portion C1b in the travel path C1 of the delivery chain 20 described above. It has an arcuate guide surface 53a along the arcuate transport path C2b at C2 (strictly, the trajectory of the paper W holding portion between the pawl 22a and the pawl base 22b of the pawl 22) (see FIG. 3).

  On the back surface of the guide plate 53, a plurality of (seven in the illustrated example) elongated negative pressure boxes 54a to 54g having the same length as the guide plate 53 in the body axis direction are arranged at equal intervals in the circumferential direction. Has been. These negative pressure boxes 54a to 54g are connected to the suction holes 56 formed in the guide plate 53 in the circumferential direction in two rows in the circumferential direction.

  Each of the negative pressure boxes 54a to 54g has a plurality of the left and right end plates 51 at equal intervals in the circumferential direction at two positions located on both the left and right sides (in the illustrated example, the number of the negative pressure boxes 54 is equal to the number of the negative pressure boxes 54). Correspondingly, the suction hoses 59a to 59g are always communicated with the openings on the inner surface side of the formed communication holes 57a to 57g through the joints 58a to 58g.

  On the other hand, the openings on the outer surface side of the communication holes 57a to 57g in the left and right both end plates 51 correspond to the left and right both end plates 51 (in other words, suction cylinders) with respect to the suction groove 47a of the suction duct 44 described above. 50), they are sequentially communicated at a predetermined time and then sequentially shut off.

  With this configuration, the paper W supplied from the paper feeding unit and positioned by the registering unit 8 is a path indicated by an arrow in the drawing, that is, a transfer cylinder 9 to 12, a rubber impression cylinder 2, a transfer cylinder 13, When the delivery cylinder 21 is conveyed along the respective circumferential surfaces in order and passes through the printing location P1 of the rubber impression cylinder 2 and the rubber cylinder 3 from the upper side to the lower side, printing is simultaneously performed on both sides thereof.

  The printed paper W is sequentially conveyed toward the paper discharge unit by the delivery chain 20, and is stacked on a predetermined paper discharge pile of the paper discharge unit.

  In this embodiment, the paper W transferred from the paper holding device of the transfer cylinder 13 to the nail cage 22 of the delivery cylinder 21 at the transfer position P2 of the paper W is conveyed under the transfer cylinder 21, that is, The inspection state of the printing state on one side is detected by the arcuate conveyance path portion C2b in the conveyance path C2 of the paper W.

At this time, in the inspection section in the delivery cylinder 21, the paper W is fed by the air blowing action of the first air blowing nozzle 25 and the second air blowing nozzle 26 and the suction action of the suction cylinder 50 in the suction guide 40 described later. Since it is brought into close contact with the guide surface 53a of the guide plate 53 along the arcuate conveyance path C2b, a highly accurate inspection is performed under a stable conveyance state of the paper W.

  Further, as described above, when the paper W is transferred from the transfer cylinder 13 and conveyed by the delivery chain 20, when the travel path C1 of the delivery chain 20 is the arc-shaped travel path portion C1b, Since the radius of curvature of the arcuate travel path C1b and the radius of curvature of the arcuate transport path C2b in the transport path C2 of the paper W are different, the travel speed of the delivery chain 20 and the transport speed of the paper W are different.

  In other words, when the arcuate transport path C2b of the paper W is located outside the arcuate travel path C1b of the delivery chain 20, the transport speed of the paper W is set to the delivery chain 20 in the arcuate transport path C2b of the paper W. It will be faster than the running speed. Then, the speed of the leading edge of the paper W that has passed the transition position S (see FIG. 3) where the paper W is transferred from the arcuate conveyance path C2b to the linear conveyance path C2a is the same as the speed of the delivery chain 20. The speed of the trailing edge of the paper W becomes faster than the speed of the delivery chain 20.

  When the speed on the rear end side of the paper W increases as described above, the paper W becomes slack and causes the paper W to flutter. As a result, there is a possibility that the paper W may be scratched or distorted, and the paper W on the guide plate 53 may be unstable, thereby hindering accurate inspection by the inspection camera 23.

  Therefore, in this embodiment, the slack portion of the paper W caused by such a difference in paper conveyance speed is smoothly guided without fluttering by the suction action of the suction drum 50 in the suction guide 40 described above. A sheet can be stably conveyed.

  That is, as shown in FIGS. 6A and 6B, the paper W is transferred from the paper holding device of the transfer cylinder 13 to the nail clip 22 of the delivery cylinder 21 at the transfer position P2 (the transfer position (I in FIG. 6A)). )), When the suction cylinder 50 is rotated, the first communication hole 57a formed in the end plate 51 reaches (communicates) the tip of the suction groove 47a formed in the suction duct 44 (the first connection in FIG. 6A). The suction start position (II) by the first communication hole 57a), the inside of the first negative pressure box 54a is the suction hose 59a, the joint 58a, the communication hole 57a, the suction groove 47a, the communication hole 47b, the joint 48, Suction is performed through a suction hose 49 to a negative pressure source.

  As a result, a negative pressure acts on the paper W conveyed along the arcuate conveyance path portion C <b> 2 b in the conveyance path C <b> 2 of the paper W through the numerous suction holes 56. As a result, the paper W is brought into close contact with the guide surface 53 a of the guide plate 53.

  Thereafter, by further rotation of the suction cylinder 50, the seventh communication hole 57g sequentially reaches (communications) the second communication hole 57b to the distal end portion of the fixed suction open groove 47a. Since the seventh negative pressure box 54g is sequentially sucked from the negative pressure box 54b, the paper W is brought into close contact with the guide surface 53a of the guide plate 53 sequentially from the front end to the rear end.

  Eventually, when the first communication hole 57a passes through the proximal end portion of the suction opening groove 47a (see the adsorption end position (III) by the first communication hole 57a in FIG. 6B), the first communication hole 57a The communication state with the suction opening groove 47a is blocked, and the adsorption action by the first communication hole 57a is completed. Thereafter, the second communication hole 57b to the seventh communication hole 57g sequentially pass through the proximal end portion of the suction opening groove 47a, and the communication state with the suction opening groove 47a is cut off, so that the second The adsorbing action by the seventh communication hole 57g through the communication hole 57b is completed.

  Under this condition, the circumferential length of the suction guide 40 including the length from the distal end portion to the proximal end portion of the suction opening groove 47a and the number of the communication holes 57a to 57g and the negative pressure boxes 54a to 54g, which are set in advance. Thus, the suction guide 40 continues to suck even after the transition position S where the transport path C2 of the paper W transitions from the arc-shaped transport path section C2b to the linear transport path section C2a. In S, even if a slack portion is generated on the paper W due to the above-described difference in paper conveyance speed, the latter half of the slack portion is attracted to the guide plate 53 by the suction action of the suction cylinder 50 and does not flutter. This state is, of course, maintained even when the paper bottom passes the inspection position K by the inspection camera 23 (see inspection end position (IV) by the inspection camera 23 in FIG. 6B), but the paper bottom passes the transition position S. It is retained even after. That is, the communication hole 57g is held until it passes through the suction opening groove 47a.

  In this way, according to the present embodiment, the slack portion of the paper W caused by the difference in paper transport speed is smoothly guided by the suction cylinder 50 without flapping, so that the paper W can be stably transported. In addition, there is no possibility that scratches or blurs will occur on the paper W, and there is no possibility that accurate inspection by the inspection camera 23 will be hindered.

  Further, in the suction guide 40, the suction duct 44 is urged so that the side surface thereof is pressed against the side surface of the ring-shaped end plate 51 in the suction cylinder 50. Absorbing effectively, a stable suction action is obtained, and reliability is high.

Further, the air blown from the second air blowing nozzle 26 guides the location past the paper W transition position S to the inside of the linear transport path C2a , and assists the paper W to adhere to the guide plate 53. There is also an advantage.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications such as a structure change of a suction guide including a suction cylinder and a processing apparatus such as an inspection camera can be made without departing from the gist of the present invention. Needless to say. In addition, although the embodiment in which the suction guide 40 and the second air blowing nozzle 26 are used together as the guide means has been described, only the suction guide 40 or only the second air blowing nozzle 26 may be used. In the case of only the second air blowing nozzle 26, the suction guide 40 may be a simple arc-shaped guide with no suction force acting. Even in this case, the portion that has passed the transition position S of the paper W by the air from the second air blowing nozzle 26 is guided inward from the linear transport path portion C2a and is in close contact with the guide surface 53a of the guide plate 53. Further, although the guide plate 53 is described as a single plate, a plurality of plates may be arranged in the circumferential direction. At that time, the suction hole 56 and the negative pressure box 54 are provided on one plate.

  The sheet guiding apparatus according to the present invention and the sheet processing apparatus including the apparatus are effective for use in a printing machine for banknotes, securities, and the like whose quality control is important.

DESCRIPTION OF SYMBOLS 1 Printing part 2 Rubber impression cylinder 3 Rubber cylinder 4 Plate cylinder 5 Plate cylinder 6 Ink unit 7 Ink unit 8 Registration part 9-12 Transfer cylinder 13 Transfer cylinder 14 Feeder board 20 Delivery chain (conveyance chain)
21 delivery cylinder 22 nail plate (sheet holding device)
22a nail 22b nail base 23 inspection camera (processing device)
24 A pair of illuminators 25 First air spray nozzle (air spray means: sheet contact means: guide means)
26 Second air spray nozzle (air spray means: sheet contact means: guide means)
27 Paper guide 28 Machine frame 30 Shaft 31 Bearing 32 Gear 34 Sprocket 35 Key 36 Chain guide 40 Suction guide (Suction means: sheet contact means: guide means)
41 Support Leg 42 Support Plate 42a Semicircular Arc Part 42b Base End 42c Spring Receiving Hole 43 Bolt 44 Suction Duct 44a Semicircular Arc Part 44b Base End 44c Spring Receiving Hole 45 Reamer Bolt 46 Compression Coil Spring 47a Suction Groove 47b Communication Hole 48 Joint 49 Hose for suction 50 Suction cylinder (rotating body)
51 End plate 52 Key 53 Guide plate (guide)
53a Guide surface 54a-54g Negative pressure box 56 Suction hole 57a-57g Communication hole 58a-58g Joint 59a-59g Suction hose W Paper (sheet)
H Clearance P1 Print location P2 Paper delivery location S Transition position from arcuate travel (conveyance) path section to linear travel (conveyance) path section K Inspection position by inspection camera C1 Travel path of delivery chain (trajectory of delivery chain: Traveling route of transport chain)
C1a Linear travel path C1b Arc travel path C2 Paper transport path (trajectory of paper holding section between nail and claw base: sheet transport path :)
C2a Linear conveyance path part C2b Arc-shaped conveyance path part

Claims (3)

A sheet holding device that has a holding portion that is provided in the conveyance chain and holds an end portion of the sheet, and that conveys the sheet along a conveyance path of the sheet by the holding unit that is separated from the traveling path of the conveyance chain;
It has a guide surface along the arcuate conveyance path part in the conveyance path of the sheet formed on the outer side of the arcuate travel path part by traveling along the arcuate travel path part in the travel path of the conveyance chain, and is conveyed. A guide to guide the seat,
In a sheet guide device comprising:
A linear travel path formed on the downstream side in the travel direction of the transport chain of the arc-shaped travel path;
Guiding means for guiding a sheet in a region downstream in the sheet conveying direction from a transition position from the arcuate travel path part to the linear travel path part, inward of the linear travel path part;
With
The guide means includes sheet contact means for closely contacting the sheet to the guide surface of the guide,
The sheet contact means places a sheet in a region downstream in the sheet conveying direction from a position of transition from the arcuate travel path part to the linear travel path part to the inside of the linear travel path part of the guide. It is closely attached to the positioned guide surface,
The guide surface of the guide is formed in an arc shape, and is a rotating body that rotates at a circumferential speed that is substantially the same as the conveyance speed of the sheet conveyed by traveling along the arc-shaped conveyance path portion of the holding portion in the sheet holding device,
The sheet contact means includes suction means for sucking a sheet in a region downstream of the transition position of the guide surface formed in the arc shape in the sheet conveyance direction,
The sheet guiding apparatus, wherein the suction unit sucks a sheet also in a region upstream of the transition position in the sheet conveying direction. A sheet holding device that has a holding portion that is provided in the conveyance chain and holds an end portion of the sheet, and that conveys the sheet along a conveyance path of the sheet by the holding unit that is separated from the traveling path of the conveyance chain;
It has a guide surface along the arcuate conveyance path part in the conveyance path of the sheet formed on the outer side of the arcuate travel path part by traveling along the arcuate travel path part in the travel path of the conveyance chain, and is conveyed. A guide to guide the seat,
In a sheet guide device comprising:
A linear travel path formed on the downstream side in the travel direction of the transport chain of the arc-shaped travel path;
Guiding means for guiding a sheet in a region downstream in the sheet conveying direction from a transition position from the arcuate travel path part to the linear travel path part, inward of the linear travel path part;
With
The guide means includes sheet contact means for closely contacting the sheet to the guide surface of the guide,
The sheet contact means places a sheet in a region downstream in the sheet conveying direction from a position of transition from the arcuate travel path part to the linear travel path part to the inside of the linear travel path part of the guide. It is closely attached to the positioned guide surface,
The guide surface of the guide is formed in an arc shape, and is a rotating body that rotates at a circumferential speed that is substantially the same as the conveyance speed of the sheet conveyed by traveling along the arc-shaped conveyance path portion of the holding portion in the sheet holding device,
The sheet contact means includes a suction means for sucking a sheet in a region upstream of the transition position of the guide surface formed in the arc shape and the transition position of the guide surface formed in the arc shape. An air blowing unit that blows air onto the sheet so that the sheet is in close contact with the guide surface in a region downstream of the sheet conveyance direction. In the sheet processing apparatus provided with the sheet guiding apparatus according to claim 1 or 2,
A processing device for processing a sheet on a guide surface of the guide along the arcuate conveyance path;
A sheet processing apparatus.

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