JP2020011791A - Sheet cutting discharging device - Google Patents

Abstract

To provide a sheet cutting discharging device capable of properly stacking sheet articles without requiring excessively adjusting a cut length of the sheet articles when varying it.SOLUTION: A sheet cutting discharging device includes: a first suction-conveying unit for suction-conveying sheet articles obtained by cutting a belt-like sheet; a second suction-conveying unit for peeling only a rear end part of the sheet article conveyed by the first suction-conveying unit to suction the rear end part of the sheet article and convey it at a lower speed than that of the first suction-conveying unit; a third suction-conveying unit for receiving the sheet article from the first suction-conveying unit to suction-convey the sheet article at a lower speed than that of the first suction-conveying unit and at a higher speed than that of the second suction-conveying unit; a contact body for being brought into contact with a tip part of the sheet article conveyed by the third suction-conveying unit to block movement thereof; a stacking unit for stacking the sheet articles; a moving unit 150 for moving the second suction-conveying unit according to a cut length of the sheet article in a conveying direction of the sheet article; and a control unit for controlling the moving unit.SELECTED DRAWING: Figure 4

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper cutting / discharging device that cuts a belt-shaped sheet (hereinafter, referred to as a band) while traveling and discharges the sheet as a sheet.

  BACKGROUND ART A paper cutting and discharging device is a device for cutting a band-shaped material such as printing paper discharged from a rotary printing press or the like into a single sheet by cutting it at a predetermined cut length, and depositing the same (for example, see Patent Documents 1 to 3). ).

  The cutting and discharging device described in Patent Literature 1 sucks a sheet cut by a rotary cutter by a braking roller to brake the sheet, and transports the sheet onto the stacking section while sucking the sheet by a Coanda box on the stacking section. ing. Further, the cutting and discharging apparatus described in Patent Literature 2 uses a free roller to press a sheet material cut by a rotary cutter toward a lower conveying belt unit to decelerate, and to suction and convey the sheet material upward by a Coanda box on a stacking unit. The sheet is conveyed onto the stacking section by belt means. Further, the cutting and discharging device described in Patent Document 3 transports a sheet cut by a rotary cutter to an upper portion of a stacking section by an upper suction transport belt means, and simultaneously releases the suction by the upper suction transport belt means and pulls the sheet. The peeling member sucks the rear end of the sheet material by the lower suction / conveying belt means, brakes it, and drops it onto the stacking section.

  In such a conventional cutting and discharging apparatus, since the shape of a sheet to be cut by a rotary cutter is specified in advance, the sheet is discharged in an appropriate shape only when the cutting and discharging apparatus is installed. The position of the rotary cutter with respect to the strip is adjusted as described above.

JP-A-50-59967 JP-A-6-321401 Japanese Patent No. 3016245

  By the way, the paper cutting / discharging device is provided with a paper abutment for bringing the leading end of the paper into contact with the downstream side of the device and dropping the paper onto the stacking unit. It is necessary to perform the adjustment and the position adjustment of the paper contact, and the adjustment takes time and effort, and is a burden on the operator.

  Therefore, an object of the present invention is to provide a sheet cutting and discharging apparatus that does not require excessive adjustment even if the cut length of a sheet is appropriately changed, and that can appropriately stack the sheet.

  In order to achieve the above object, a sheet cutting and discharging device (S) according to claim 1, wherein the cutting unit (10) cuts a band-shaped sheet (2) to generate a sheet material (2a), and the cutting unit. A first suction and conveyance unit (45, 65) that suctions and conveys the sheet material cut by the above, and peels off only a rear end of the sheet material conveyed by the first suction and conveyance unit, A second suction and transport unit (95) for sucking a rear end of the sheet and transporting the sheet at a lower speed than the first suction and transport unit; and the sheet sucked and transported by the first suction and transport unit. A third suction / conveyance unit (85) for receiving the leaf, sucking and transporting the single-wafer at a lower speed than the first suction / conveyance unit and at a higher speed than the second suction / conveyance unit; 3 by the suction transport unit A contact body (90) for contacting the leading end of the conveyed sheet and preventing movement of the sheet, and a stacking unit provided below the third suction and conveyance unit for stacking the sheet; (20) a moving unit (150) for moving the second suction / conveying unit in a conveying direction of the sheet according to a cut length of the sheet, and a control unit for driving and controlling the moving unit. , Is provided.

  According to the present invention, the lower second transport unit 120 is moved by a predetermined amount in a predetermined direction together with the peeling unit 110 in accordance with a piece of material discharged with a predetermined cut length, so that the lower second transport unit 120 is Since the distance to the second transport unit 85 is adjusted, it is possible to accurately and quickly stack the single-wafer articles 2a on the stacking unit 20.

FIG. 1 is a schematic diagram illustrating an overall configuration of a sheet cutting and discharging device according to the present invention. It is a schematic diagram which shows the example of a structure of a peeling conveyance unit. It is a schematic diagram which shows the example of arrangement | positioning of the belt of a suction conveyance belt unit. It is a schematic diagram which shows an example of a moving unit, FIG.4 (a) is a side view, FIG.4 (b) is XX sectional drawing. It is a schematic diagram which shows an example of the index | index provided in a casing and a frame.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The paper cutting and discharging device (hereinafter, referred to as “cutting and discharging device S”) of the present embodiment is disposed, for example, in a discharge unit of a rotary printing press (not shown), and sucks the strip 2 discharged from the rotary printing press. Then, the sheet is conveyed to the rotary cutter 11, cut by the rotary cutter 11 at a predetermined cut length to form a single sheet 2 a, and a plurality of single sheets 2 a are arranged in a partially overlapped state and the stacking section 20. And stacked. The cutting and discharging device S may be provided separately from the rotary printing press, and may be subjected to printing, processing, and the like on the belt-shaped material 2, and may be wound again into a roll and cut while being fed out.

  Specifically, the cutting and discharging apparatus S according to the present embodiment includes a cutting unit 10 (cutting unit of the present application) that cuts the strip 2 at a predetermined cut length to generate a single sheet, and a stack that stacks the cut single sheet. Section 20 (the stacking unit of the present application), an infeed section 30 for feeding the strip 2 to the cutting section 10, and a plurality of cut single-wafer articles 2 a arranged in a partially overlapped state and sent to the stacking section 20. And a transport unit 40. Each of the units 10, 20, 30, and 40 is totally controlled by a control unit (not shown).

  The infeed unit 30 includes a draw roller 31 that is rotationally driven by a drive unit such as a plurality of guide rollers or a motor (not shown) that guides the strip 2 supplied from a rotary printing press or a reel stand (not shown), and a draw roller 31. And a first lower suction transport belt unit (hereinafter, referred to as a “lower first transport unit 35”) that transports the belt-shaped material 2 guided to the cutting unit 10 while sucking it from below. The belt 2 is conveyed to the cutting section 10 in a stable state with its entire back surface being sucked by the lower first conveying unit 35.

  The lower first transport unit 35 includes a thin and strong endless belt 36 in which a number of small holes for ventilation are provided at a constant pitch in the length direction. The belt 36 is wrapped around the outer periphery of a drive shaft 37 and a plurality of driven shafts 38 arranged in a direction perpendicular to the running direction of the strip 2, and a plurality of belts are arranged in parallel along the running direction of the strip 2. Have been. A suction box 39 is arranged in a space surrounded by the belt 36, and a suction port (not shown) is formed so as to face a portion of the belt 36 that is to come into contact with the belt 2 from the back. The suction box 39 is connected to a blower, and the belt 2 is sucked to the belt 36 by the suction action of the blower.

  The drive shaft 37 is wound around left and right frames (not shown) of the cutting and discharging device S to obtain power by a drive unit such as a motor. The suction box 39 is fixed to the frame, and the driven shaft 38 The draw roller 31 is rotatably supported by the frame.

  The cutting unit 10 includes a rotary cutter 11 having a rotary blade and a fixed blade (not shown), and cuts the strip 2 at a set dimension to generate a single-wafer 2a. The fixed blade is attached to the frame so as to be in contact with the lower surface of the belt 2 to be conveyed. On the other hand, the rotary blade is mounted on the rotary cylinder 12 so as to periodically contact the fixed blade from the upper surface of the strip 2.

  As shown in FIG. 1, between the rotary cutter 11 and an upper first transport unit 45 described later, a Coanda that transports the sheet 2a cut by the rotary cutter 11 to the upper first transport unit 45 is provided. A box 5 is provided.

  Although not shown, the Coanda box 5 has a large number of air ejection holes formed on one plane so that air flows along one plane of the elongated box along the downstream in the longitudinal direction of the box. It is arranged so as to correspond to each of the belts 46 of one transport unit 45 along the traveling direction of the single-wafer 2a. When air is supplied from a blower (not shown) into the Coanda box 5, the air flows from a number of air ejection holes along the plane of the ejection box in the feed direction of the single article 2a. Due to the Coanda effect, it is conveyed to the downstream side on the Coanda box 5 without flutter. The sheet 2a is smoothly conveyed downstream by the airflow by the Coanda box 5.

  Note that the Coanda box 5 can be omitted when the sheet 2a does not flutter. In addition, the Coanda box 5 can be arranged above the traveling single-wafer 2a.

  The transport unit 40 receives the band 2 from the in-feed unit 30 and transports the sheet 2a cut by the cutting unit 10 to the downstream side while sucking the band 2 from above (first upper suction transfer belt unit ( Hereinafter, this is referred to as an “upper first transport unit 45”), and an intermediate suction transport belt unit (hereinafter, “intermediate transport unit 65”) that receives the sheet material 2a from the upper first transport unit 45 and transports it downstream. ), And a sashimi forming unit 80 that transports the plurality of single-wafer objects 2a while partially arranging them. Note that, in the present embodiment, the upper first transport unit 45 and the intermediate transport unit 65 are disposed separately, but may be provided integrally.

  The upper first transport unit 45 pulls the strip 2 together with the lower first transport unit 35 when the rotary cutter 11 cuts the strip 2, and pulls the sheet 2 a generated by cutting the strip 2 downstream ( (Right direction in FIG. 1).

  The upper first transport unit 45 includes a thin and strong endless belt 46 in which a number of small holes for ventilation are provided at a constant pitch in the length direction. The belt 46 is stretched between a drive shaft 47 and a plurality of driven shafts 48 arranged in a direction perpendicular to the running direction of the single-wafer 2a, and a plurality of belts 46 are arranged in parallel along the running direction of the single-wafer 2a. Are located in Further, a suction box 49 is arranged in a space surrounded by the belt 46.

  The rotation of the drive shafts 37 and 47 of the transport units 35 and 45 is controlled so that the speed of the belt 46 of the upper first transport unit 45 is slightly faster than the speed of the belt 36 of the lower first transport unit 35.

  The drive shaft 47 is wound around left and right frames (not shown) of the cutting and discharging device S to obtain power by a drive unit such as a motor. The suction box 49 is fixed to the frame, and the driven shaft 48 Is rotatably supported by the frame.

  Further, the suction boxes 49 are arranged for the respective belts 46 of the upper first transport unit 45, and the suction ports formed on the upper surface of each of the suction boxes 49 come into contact with the sheet 2 a conveyed on the belt 46. It faces from where it should be. Each suction box 49 is connected to a blower (not shown), and the sheet 2a is sucked to the belt 46 by the suction action of the blower.

  The intermediate transport unit 65 is provided downstream of the upper first transport unit 45, and travels at the same speed as the travel speed of the belt 46 of the upper first transport unit 45. Since the intermediate transport unit 65 has the same configuration as the upper first transport unit 45, the same reference numerals are given and the description of the configuration is omitted.

  A plurality of belts 66 of the intermediate transport unit 65 are arranged in parallel along the traveling direction of the single-wafer 2a, and alternate with the belt 46 of the upper first transport unit 45 in a direction orthogonal to the transport direction. It is arranged, receives the sheet 2a from the upper first transport unit 45, and delivers it to the upper second transport unit 85 described later.

  The scissors forming unit 80 is provided downstream of the upper first transport unit 45 and the intermediate transport unit 65, and travels at a lower speed than the traveling speeds of the belts 46 and 66 of the upper first transport unit 45 and the intermediate transport unit 65, respectively. The second upper suction transport belt unit (hereinafter, referred to as “upper second transport unit 85”), and the rear end of the sheet material 2a are peeled downward to be in contact with the belt 46 of the upper first transport unit 45. And a peel-off transport unit 95 for sucking and transporting the rear end to the downstream side while forming a gap therebetween.

  The upper second transport unit 85 is provided with a thin and strong endless belt 86 in which a number of small holes for ventilation are provided at a constant pitch in the length direction. The belt 86 is bridged between a drive shaft 87 disposed in a direction perpendicular to the traveling direction of the single-wafer 2a and a plurality of driven shafts 88, and a plurality of belts 86 are arranged in parallel along the traveling direction of the single-wafer 2a. Are located in A suction box 89 is arranged in a space surrounded by the belt 86.

  The belt 86 of the upper second transport unit 85 travels at a speed, for example, about 1/10 to 1/20, which is lower than the travel speed of each of the belts 46 and 66 of the upper first transport unit 45 and the intermediate transport unit 65. .

  As shown in FIG. 3, the plurality of belts 86 are alternately arranged with the belts 66 of the intermediate transport unit 65 in a direction orthogonal to the transport direction, receive the sheet 2a from the intermediate transport unit 65, and The transport speed of the single-wafer 2a is reduced in order to orderly drop the single-wafer 2a on the stacking unit 20 disposed below.

  A suction box 89 is disposed in a space surrounded by the belt 86, and the sheet 2a is conveyed while being attracted to the belt.

  Further, on the downstream side of the upper second suction / conveyance unit 85, on the traveling route of the single-wafer 2a, there is provided a contact body 90 which comes into contact with the single-wafer 2a and prevents the movement of the single-wafer. The tip of the sheet 2a is brought into contact with the contact body 90 to drop the sheet 2a downward.

  The peeling / conveying unit 95 includes a peeling unit 110 for peeling the rear end of the sheet 2a downward, and a second lower suction / conveying belt for conveying the rear end of the sheet 2 to the downstream side while sucking the rear end from below. And a unit (hereinafter, “lower second transport unit 120”).

  The peeling unit 110 is disposed on the path of the upper first transport unit 45, and pushes down the rear end of the sheet 2a that is attracted and transported by the belt 46 of the upper first transport unit 45. It acts to peel off the belt 46.

  For example, as shown in FIG. 2, the peeling unit 110 includes a brush 111 on a rotary cylinder 112, and the brush 111 is intermittently inserted between the suction boxes 49 by rotation of the rotary cylinder 112. Be placed.

  The brush 111 contacts the rear end of the single-wafer 2a when the single-wafer 2a is transported by the upper first transport unit 45, and the rear end of the brush 111 is moved by the suction box 49 of the upper first transport unit 45. The belt 46 is peeled off from the lower surface of the belt 46 against the suction force of the belt 46. The rear end of the peeled sheet 2a is transferred to the lower second transport unit 120 and transported downstream.

  The lower second transport unit 120 includes a thin and strong endless belt 121 in which a number of small holes for ventilation are provided at a constant pitch in the length direction. The belt 121 is stretched between a drive shaft 122 and a plurality of driven shafts 123 arranged at right angles to the traveling direction of the single-wafer 2a, and a plurality of belts 121 are arranged in parallel along the traveling direction of the single-wafer 2a. Are located in A suction box 124 is arranged in a space surrounded by the belt 121, and the sheet 2 a is conveyed while being attracted to the belt 121.

  The belt 121 of the lower second transport unit 120 travels at a lower speed than the traveling speed of each of the belts 46 and 65 of the upper first transport unit 45 and the intermediate transport unit 65. It runs at a speed slightly lower than the running speed.

  As shown in FIG. 2, the drive shaft 122 of the lower second transport unit 120 includes a suction roller (for example, a suction roller 125), and a number of suction holes are formed in the surface thereof. The drive shaft 122 is disposed almost directly below the peeling unit 110, is connected to a blower, and is suctioned and conveyed by the belt 46 of the upper first conveyance unit 45 by sucking air from a suction hole. The rear end of the leaf 2a is peeled off and is attracted to the surface of the suction roller 125.

  As shown in FIG. 4, the peeling unit 110 and the lower second transport unit 120 are attached to, for example, a casing 130 to be integrated, and the cutting and discharging apparatus S of the present embodiment A moving unit 150 that moves in the transport direction of the single-wafer 2a is provided.

  Although not shown, the casing 130 includes left and right side walls, and the side walls can be moved to left and right frames RF and LF (not shown) extending in the left and right longitudinal direction of the cutting and discharging device S via the moving unit 150. It is attached. The casing 130 is slidable in the longitudinal direction of the cutting / discharging device S by the moving unit 150. The casing 130 includes the peeling unit 110 and the lower second transport unit 120 depending on the cut length of the single-wafer 2a. The position is adjusted with the upper second transport unit 85.

  The moving unit 150 is attached along the direction A or B of the frame RF (LF), and guides 152 that define a moving (sliding) direction, a rotating body 154 that is in contact with the guide 152, and an actuator that rotationally drives the rotating body 154. 156. The rotating body 154 is rotatably supported by a side wall of a casing 130 that integrates the peeling unit 110 and the lower second transport unit 120.

  As an example of the guide 152, a rack is used, and the rack is provided on a frame RF (LF) arranged on both left and right sides of the cutting and discharging device S so as to extend linearly along the longitudinal direction.

  As an example of the rotating body 154, a gear mechanism is used. The gear mechanism includes, for example, a rotatable driving gear that receives a driving force from at least the actuator 156 and transmits the driving force to the rack.

  As an example of the actuator 156, a drive motor M having a rotating shaft is used. The drive motor M is fixed to the casing 130, and has a rotating shaft connected to a drive gear. Note that the actuator 156 is not limited to a drive motor, and may be a cylinder device or the like capable of driving a shaft to expand and contract in the longitudinal direction of the frame.

  When the driving force is transmitted to the driving gear by the rotation of the rotating shaft of the driving motor M, the moving unit 150 configured as described above rotates the driving gear and moves on the rack, so that the casing 130 Is moved in the A or B direction.

  As described above, in the cutting and discharging apparatus S of the present embodiment, the casing 130 can be moved in the A or B direction by the moving unit 150, and the peeling unit 110 and the lower second transporting unit 120 can be moved according to the cut length. Can be integrally moved to a predetermined position.

  Although not shown, the stacking section 20 includes a pallet suspended vertically by a chain or the like. The pallet is controlled by a control device (not shown) and descends as the deposition amount of the single-wafer 2a increases.

  In addition, joggers 160 are provided on the left and right upper portions of the stacking unit 20, and the edges of the single-wafer objects 2a emitted onto the stacked single-wafer objects 2a are aligned by applying vibration. I have.

  Note that the upper first transport unit 45 and the intermediate transport unit 65 of the present embodiment function as a first suction transport unit of the present application, and the peeling transport unit 95 functions as a second suction transport unit of the present application. The upper second transport unit 85 functions as a third suction transport unit of the present application.

  The control unit (not shown) mainly includes a CPU (Central Processing Unit) having an arithmetic function, a working RAM, and a ROM for storing various data and programs. The CPU executes various programs stored in the ROM, for example, to control each unit and to control the entire cutting and discharging apparatus.

  The control section is for controlling the driving of each section, and after cutting the strip to generate a single-wafer material, the control for depositing on the depositing section is already publicly known, so the description thereof is omitted, and Only those parts will be described.

  The control unit of the present embodiment drives and controls the moving unit 150 to move the peeling unit 110 and the lower second transport unit 120 according to a predetermined cut length.

  The drive control of the moving unit 150 may be performed manually by an operator or automatically according to a predetermined cut length.

  Specifically, in the case of manual operation, for example, although not shown, the trimming and discharging device S includes an operating unit that defines the moving direction of the moving unit 150 by an operator, and the driving unit of the moving unit 150 is operated by operating the operating unit. The drive of the actuator 156 functioning as a controller is controlled to move the casing 130 by a predetermined moving amount. In this case, as shown in FIG. 5, a reference index 170 is provided at the lower end of the casing 130, a plurality of indexes 175 corresponding to the cut length are provided in the frame RF, and the operator can perform a predetermined cut. The operation is performed such that the reference index 170 matches the index 175 corresponding to the length.

  On the other hand, in the case of automatic operation, for example, although not shown, the trimming and discharging device S includes an input unit for inputting cut length information that defines the cut length of the single-wafer 2a. The drive of the drive unit is controlled based on the input of the control information, and the casing 130 is moved by a predetermined movement amount according to the cut length information.

  More specifically, based on the cut length information, when the leading end of the cut sheet 2a is conveyed while being sucked by the upper second conveying unit 85, the control section controls the rear end of the lower second conveying The moving unit 150 is driven and controlled so that the casing 130 is moved in the conveying direction of the single-wafer material 2 a so as to be conveyed while being sucked by the unit 120, and the distance between the casing 130 and the upper second conveying unit 85 is adjusted. In addition, the control unit drives and controls the moving unit 150 such that the rear end of the sheet material 2a is released from the suction conveyance by the lower second conveyance unit 120 before the sheet material 2a contacts the contact body 90. To move the casing 130.

  As described above, the cutting and discharging apparatus S of the present embodiment moves the casing 130 in accordance with the cut length of the single-wafer material 2a, thereby reducing the distance between the lower second transport unit 120 and the upper second transport unit 85. adjust.

  As a result, the sheet 2 a is conveyed while being pulled, and the rear end of the sheet 2 a is moved by the belt 121 of the lower second conveying unit 120 immediately before the leading end of the sheet 2 a comes into contact with the contact body 90. The sheet 2a is released from the suction conveyance, and falls by its own weight to drop to the stacking unit 20. Since the single-wafer object is maintained in a pulled state until immediately before dropping, the single-wafer object 2a falls down without its shape being collapsed, and the single-wafer object 2a is accurately and properly deposited in the deposition unit 20.

  Next, a series of operations of the cutting and discharging apparatus S will be described with reference to FIGS.

  First, as shown in FIG. 1, FIG. 2, or FIG. 4, the cutting and discharging apparatus S transports the cut end of the sheet 2 a while being sucked by the upper second transport unit 85 by drive control by the control unit. In this case, the rear end of the sheet 2a is conveyed while being sucked by the lower second conveying unit 120, and immediately before the front end of the sheet 2a contacts the contact body 90, the rear end of the sheet 2a is moved downward. The casing 130 is moved in the A or B direction according to the cut length of the single-wafer material 2a so as to be released from the suction conveyance by the unit 120.

  Specifically, when the cut length is long, the casing 130 is moved in the direction B, that is, in the direction away from the upper second transport unit 85 as shown by the solid line in FIG. That is, as shown by a dotted line in FIG. 1, the casing 130 is moved in a direction approaching the upper second transport unit 85.

  Next, in the in-feed unit 30, the belt-shaped material 2 is sent out to the lower first transport unit 35 with the entire width direction nipped on the surface thereof by driving the draw roller 31, and the belt of the lower first transport unit 35 It is sent out to the cutting section 10 while being sucked on the 36.

  Next, the strip 2 is cut by the rotary cutter 11 in the cutting section 10. At the time of this cutting, the leading end of the strip 2 passes through the rotary cutter 11 before entering the cutting posture, is transferred to the belt 46 of the upper first transport unit 45, and is sucked down by the belt 46 on the downstream side. Transported to For this reason, the strip 2 is pulled by an appropriate force between the lower first transport unit 35 and the upper first transport unit 45, and is cut by the rotary cutter 11 immediately thereafter.

  Since the belt 46 of the upper first transport unit 45 travels at a slightly higher speed than the belt of the lower first transport unit 35, the belt 46 is located between the rear end of the sheet 2a generated by cutting and the distal end of the strip 2. Has a gap. Thus, it is possible to prevent the front end of the succeeding strip 2 from colliding with the rear end of the preceding sheet 2a.

  While the leading end of the sheet 2 is transferred to the upper second transfer unit 55 via the upper first transfer unit 45 and the intermediate transfer unit 65, the rear end of the sheet 2a is located below the peeling unit 110. Transported to

  Then, as shown in FIG. 2, the brush 111 of the peeling unit 110 pushes down the rear end of the sheet 2a from the belt 46 of the upper first transport unit 45 against the suction force, and the brush 111 of the suction roller 125 When pressed against the surface, the rear end of the single-wafer 2a is sucked by the surface of the suction roller 125, and bends following the surface.

  Further, since the belt 56 of the upper second transport unit 55 runs at a lower speed than the belts 46 and 66 of the upper first transport unit 45 and the intermediate transport unit 65, the leading end of the succeeding sheet 2a is While being sunk under the leaf 2a, the sheet is partially overlapped with the preceding sheet 2a and transported.

  Further, since the belt 56 of the upper second transport unit 55 travels at a slightly higher speed than the belt 121 of the lower second transport unit 120, the sheet 2a is transported in a stretched state.

  The amount of overlap between the preceding sheet 2a and the succeeding sheet 2a is determined by the speed difference between the belt 56 of the upper second transport unit 55 and the belts 46 and 66 of the upper first transport unit 45 and the intermediate transport unit 65. Therefore, the rotation speed of each drive shaft may be controlled.

  The leading end of the sheet 2a conveyed by the belt 56 of the upper second conveying unit 55 in this way comes into contact with the contact body 90. At this time, the rear end of the sheet material 2a is separated from the conveyance by the lower second conveyance unit 120, and the central portion of the sheet material 2a overlaps the subsequent sheet material 2a. , And only the tip is sucked by the upper second transport unit 55. Therefore, when the tip comes into contact with the contact body 90, it falls down by its own weight and is sequentially stacked on the stacking unit 20. A plurality of single-wafer objects 2a that are deposited and conveyed reliably and accurately at high speed can be deposited.

  As described above, the casing 130 is moved according to the cut length of the single-wafer material 2a, and the distance between the lower second transport unit 120 and the upper second transport unit 85 is adjusted. The plurality of pieces 2a having different lengths can be reliably and accurately deposited.

2 Strip 2a Single-wafer 10 Cutting section 20 Stacking section 45 Upper first transport unit 65 Intermediate transport unit 85 Upper second suction transport unit 90 Contact body 95 Peeling transport unit 150 Moving unit

Claims (5)

A cutting unit that cuts a strip of paper to produce a single sheet,
A first suction and conveyance unit that suctions and conveys the sheet material cut by the cutting unit,
While peeling off only the rear end of the single-wafer object conveyed by the first suction / conveyance unit, the rear end of the single-wafer object is sucked and conveyed at a lower speed than the first suction / conveyance unit. A second suction transport unit,
Receiving the sheet material sucked and conveyed by the first suction conveyance unit, sucking and conveying the sheet material at a lower speed than the first suction conveyance unit and at a higher speed than the second suction conveyance unit. A third suction / transport unit that performs
A contact body that comes into contact with a tip end of the single-wafer transported by the third suction transport unit and prevents movement of the single-wafer transport;
A stacking unit provided below the third suction transport unit and stacking the single-wafers;
A moving unit that moves the second suction and transport unit in a transport direction of the sheet material according to a cut length of the sheet material;
A control unit for driving and controlling the moving unit;
Paper cutting and discharging device.   The control unit is configured such that, when the cut front end of the sheet material is conveyed while being suctioned by the third suction conveyance unit, the rear end is conveyed while being suctioned by the second suction conveyance unit. 2. The sheet cutting and discharging apparatus according to claim 1, wherein the second suction and conveyance unit is drive-controlled. The control unit includes:
Before the sheet comes into contact with the contact body, the drive control of the second suction / transport unit is performed such that the rear end of the sheet is released from the suction / transport by the second suction / transport unit. The sheet cutting and discharging device according to claim 1 or 2, wherein The second suction conveyance unit includes:
A peeling unit that peels only the rear end of the single-sheet material downward,
A suction conveyance unit that suctions and conveys the rear end of the sheet material peeled off by the peeling unit,
With
The paper cutting / discharging device according to any one of claims 1 to 3, wherein the peeling unit and the suction / conveying unit are integrated. Further comprising information input means for inputting the cut length information that defines the cutting length of the single sheet,
The paper cutting / discharging apparatus according to claim 1, wherein the control unit drives and controls the moving unit based on the cut length information.

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