JP2004043106A - Cut sheet discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cut sheet discharging device capable of appropriately stacking a sheet work even when a gap is large. <P>SOLUTION: The cut sheet discharging device is equipped with a rotary cutter (4) which cuts a strip (1) and obtains the sheet work (1a), an upper suction conveyor belt means (3) which conveys the sheet work while sucking it, a peeling member (5) which peels the rear end part of the sheet work sucked by the upper suction conveyor belt means, a low speed lower suction conveyor belt means (6) which sucks the peeled sheet work, and a stacking part (25) which stacks the sheet work discharged from the lower suction conveyor belt means. A starting end side roller of the lower suction conveyor belt means is formed as a suction roller (22), and the peeling member is arranged so as to push the rear end of the sheet work on the suction roller. A Coande box (30) which receives the sheet work conveyed with the lower suction conveyor belt means, and conveys it onto the stacking part gradually reducing suction force, is installed on the stacking part. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cutting and discharging device that cuts a web-like material such as a web while traveling and discharges the material as a single sheet.
[0002]
[Prior art]
The trimming and discharging apparatus is configured to cut a strip of printing paper or the like discharged from a rotary printing press or the like by a predetermined length to form a sheet, and deposit the sheet. For example, Japanese Patent Application Laid-Open No. 50-59967 discloses And Japanese Patent Application Laid-Open No. 6-321401 and Japanese Patent No. 3016245 are known.
[0003]
The cutting and discharging apparatus disclosed in Japanese Patent Application Laid-Open No. 50-59967 is designed so that a single sheet cut by a rotary cutter is sucked and braked by a braking roller, and is conveyed onto a stacking section while being sucked by a Coanda box on the stacking section. It has become. The cutting and discharging apparatus disclosed in Japanese Patent Application Laid-Open No. HEI 6-321401 discloses a cutting and discharging apparatus in which a sheet material cut by a rotary cutter is pressed by a free roller toward a lower conveying belt means, decelerated, and sucked by a Coanda box on a stacking section while an upper conveying belt is pulled. It is adapted to be conveyed onto the deposition section by means. The cutting and discharging apparatus disclosed in Japanese Patent No. 3016245 transports a sheet cut by a rotary cutter to an upper portion of a stacking section by an upper suction and conveyance belt means, releases suction by the upper suction and conveyance belt means, and simultaneously releases the sheet by a peeling member. The rear end of the single sheet is sucked by the lower suction and conveying belt means to apply a brake to drop the sheet onto the stacking section.
[0004]
[Problems to be solved by the invention]
The cutting and discharging apparatus described in JP-A-50-59967, JP-A-6-321401 and JP-A-3016245 has a height at which a sheet falls on a stacking section, that is, the upper end of the sheet stacked on the stacking section. Since the head from the top to the upper suction conveyance belt means and the Coanda box is small, sheets can be properly stacked on the stacking section. However, when the stacking unit is provided with the temporary receiving device or the like, the above-mentioned head becomes large, and it becomes impossible to properly stack the single-wafer materials on the stacking unit. The temporary receiving device is configured such that, when the sheet material is accumulated to a certain height on the accumulation section, the fork-shaped receiving member is advanced directly below the upper suction conveyance belt means or the Coanda box to receive the falling sheet material. In this method, a pile of sheet materials already accumulated while receiving a subsequent sheet material by the temporary receiving device is to be carried out of the machine.
[0005]
It is an object of the present invention to provide a trimming and discharging device that can properly stack single sheets even when the head is large.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 provides a rotary cutter (4) for cutting a strip (1) to obtain a sheet-like article (1a), and a sheet-like article (1) cut by the rotary cutter (4). 1a) upper suction conveyance belt means (3) for conveying while suctioning, and peeling for peeling the rear end of the sheet (1a) conveyed while being suctioned by the upper suction conveyance belt means (3) downward. A member (5), a lower suction transport belt means (6) for sucking the sheet material (1a) peeled off by the peeling member (5) and transporting the same at a lower speed than the upper suction transport belt means (3); And a stacking section (25) for stacking the sheets (1a) discharged from the lower suction and conveying belt means (6), the starting roller of the lower suction and conveying belt means (6) is a suction roller ( 22) formed as a peeling member 5) is arranged such that the rear end of the single-wafer (1a) can be pressed onto the suction roller (22), and the single-wafer transported to the lower suction transport belt means (6) is disposed on the stacking unit (25). A cutting and discharging device provided with a Coanda box (30) for receiving (1a) and transporting it onto the stacking section (25) while gradually lowering the suction force is adopted.
[0007]
Further, the invention according to claim 2 provides a method in which the sheet material (1a) cut by the rotary cutter (4) is moved between the rotary cutter (4) and the upper suction transport belt means (3). The cutting and discharging device according to claim 1, which is provided with a Coanda box (15) for conveying to (3).
[0008]
The invention according to claim 3 is characterized in that the upper suction transport belt means (3) gradually lowers the suction force from the lower suction transport belt means (6) to the start end of the Coanda box (30) while the sheet material (1a The cutting and discharging device according to claim 1 or 2 is formed so as to transport the sheet.
[0009]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
This trimming and discharging device is arranged at the discharge section of the rotary printing press, and is configured to cut and discharge the band-shaped material 1 as a printed material at a fixed length, or provided separately from the rotary printing press. The strip 1 is subjected to printing, processing, and the like, and is again cut into a roll shape while being fed out and cut.
[0011]
As shown in FIG. 1, the trimming and discharging device includes a first suction and conveyance belt means 2 for sucking and conveying the strip 1 and a first suction and conveyance belt means for conveying the strip 1 while suctioning the strip 1 from its upper surface. The upper suction conveyance belt means, which is the second suction conveyance belt means 3, which is disposed downstream of the second suction conveyance belt means 2, and the strip-shaped material 1 straddling between the first and second suction conveyance belt means 2, 3 are cut. The rotary cutter 4 disposed between the two suction and conveyance belt means 2 and 3 for obtaining the single-wafer material 1a, and the rear end of the single-wafer material 1a sucked by the second suction and conveyance belt means 3 is subjected to a second suction. Peeling member 5 to be peeled downward from the conveyor belt means 3 and second suction conveyance arranged below the second suction and conveyance belt means 3 for sucking the sheet 1a peeled off by the peeling member 5 Third suction transport bell running at a lower speed than the belt means 3 And a lower suction conveyor belt means is a means 6.
[0012]
The first suction / conveyance belt means 2 includes a thin and strong endless belt 7 in which a number of small holes for ventilation (not shown) are provided at a constant pitch in the length direction, and the belt 1 is sucked from its lower surface. 1 It sends at a constant speed to the right in the middle. A plurality of first suction / conveyance belt means 2 are arranged in parallel along the running direction of the belt-like material 1. These first suction and conveyance belt means 2 are stretched between a drive shaft 8 and a driven shaft 9 which are arranged in a direction perpendicular to the running direction so as to contact the lower surface of the belt-shaped material 1, and It travels at a speed slightly higher than the traveling speed of the strip 1 discharged from the vehicle. Further, a suction box 10 is disposed at a location surrounded by the first suction / conveyance belt means 2, and a suction port (not shown) of the belt 7 faces a location of the belt 7 that should contact the belt-like material 1 from the back. Air is exhausted from the suction box 10 by a blower connected through a duct (not shown). The drive shaft 8 is rotatably wrapped between left and right frames (not shown) of the cutting / discharging device so as to obtain power from the rotary printing press. The suction box 10 is fixed to the frame, and The shaft 9 is rotatably supported by the suction box 10.
[0013]
As shown in FIG. 1, a guide roller 11 for guiding the strip 1 discharged from the rotary printing press and a first pulling strip 1 are provided between the first suction conveyance belt unit 2 and the rotary printing press. And a second draw roller 12, 13, and a compensator roller 14 that contacts the strip 1 between the first and second draw rollers 12, 13. The strip 1 discharged from the rotary printing press is pulled by the first draw roller 12 via the guide roller 11 and further pulled by the second draw roller 13 and reaches the first suction and conveyance belt means 2, There, it is further pulled to reach the rotary cutter 4 and cut. It is necessary to cut the strip 1 for each circumferential length of the plate cylinder. Therefore, on the second draw roller 13, a pattern, a mark, etc. of an appropriate size printed on the strip 1 is selected and detected. Sensors (not shown) are arranged. That is, based on the signal detected by the sensor, the compensator roller 14 moves to adjust the length of the path of the band 1 between the first and second draw rollers 12 and 13 so that the rotary cutter 4 and the band 1 The phase is matched with the plate cylinder circumference pitch.
[0014]
When the band 1 from the rotary printing press enters the cutting and discharging device, the phase of the plate cylinder pitch and the rotary cutter 4 are adjusted by the compensator roller 14, and the first suction / conveyance belt unit 2 removes the band 1 It is sent at a constant speed to the rotary cutter 4 while sucking.
[0015]
Note that the first suction / conveyance belt means 2 may be arranged so as to be in contact with the upper surface of the strip 1. Further, the first suction / conveying belt means 2 may be omitted, and the belt-shaped body 1 may be directly fed from the second draw roller 13 to the rotary cutter 4.
[0016]
The rotary cutter 4 cuts the belt-shaped material 1 sent by the first suction / conveying belt means 2 at a boundary between printed symbols. The rotary cutter 4 includes a rotary blade 4a and a fixed blade 4b, and the fixed blade 4b is connected to the lower surface of the strip 1 fed from the first suction / transport belt means 2 so as to contact the lower surface of the belt 1 (not shown). , And the rotary blade 4a is mounted on a rotary cylinder so as to periodically contact the fixed blade 4b from the upper surface of the strip 1. The rotary blade 4a of the rotary cutter 4 rotates at the same rotational speed as the plate cylinder of the printing press, so that the strip 1 is accurately cut at the printed symbol pitch.
[0017]
Between the rotary cutter 4 and the upper suction transport belt means 3, a Coanda box 15 for transporting the sheet material 1a cut by the rotary cutter 4 to the upper suction transport belt means 3 is provided.
[0018]
As shown in FIGS. 2A and 2B, this Coanda box 15 has a large number of air ejection holes 15a on one plane so that air flows along one plane of the elongated box along the longitudinal direction of the box. It is arranged along the running direction of the sheet 1a corresponding to each of the belts 7 of the first suction and conveyance belt means 2. As shown in FIG. 2A, when air is supplied from a blower (not shown) into the Coanda box 15, the air is fed from a number of air ejection holes 15a along one plane of the ejection box 1a. The sheet 1a flows in the direction, and is conveyed on the Coanda box 15 toward the second suction conveying belt means 3 without fluttering due to the Coanda effect. The strip 1 or sheet 1a rides on the airflow by the Coanda box 15 and is smoothly transported to the next second suction transport belt means 3 and is appropriately sucked.
[0019]
Note that the Coanda box 15 can be omitted when the sheet-like material 1a does not flutter. Further, the Coanda box 15 can be disposed above the traveling single-wafer material 1a.
[0020]
The upper suction conveyance belt means 3, which is the second suction conveyance belt means, receives the leading end of the strip 1 immediately before the rotary cutter 4 cuts the strip 1 and pulls it together with the first suction conveyance belt means 2, and When the strip 4 cuts the strip 1, the cut sheet 1a is transported rightward in FIG. The upper suction conveyance belt means 3 is driven slightly faster than the first suction conveyance belt means 2. As shown in FIG. 3 (B), the upper suction / transport belt means 3 includes a thin endless belt 16 having a large number of small holes 16a for ventilation, and the belt 16 runs along the running direction of the belt-like material 1. Are arranged in parallel. These belts 16 are provided between a drive shaft 17 and a driven shaft 18 which are arranged in a direction perpendicular to the running direction so that the lower running portion thereof comes into contact with the upper surfaces of the strip 1 and the single-wafer material 1a. And is driven at a speed slightly higher than the running speed of the belt 7 of the first suction / conveyance belt means 2. The drive shaft 17 is stretched between left and right frames (not shown) of the cutting / discharging device, rotated by the power from the rotary printing press, and rotates the belt 16 of the upper suction / transport belt means 3 to the belt of the first suction / transport belt means 2. Run at a speed slightly greater than 7.
[0021]
As shown in FIG. 3A, a suction box 19 is arranged for each belt 16 of the upper suction conveyance belt means 3, and suction ports 19a, 19b, 19c, 19d formed on the lower surface of each suction box 19. Faces the portion of the belt 16 of the upper suction / transport belt means 3 that should come into contact with the single-wafer material 1a from the back. The suction ports 19a, 19b, 19c, and 19d are arranged in order along the traveling direction of the single-wafer material 1a, and are formed such that the opening area decreases from upstream to downstream. More specifically, the suction ports 19a, 19b, and 19c are long holes formed so that the opening area gradually decreases between them, and the suction ports 19d are arranged so that the pitch gradually increases between them. It is a round hole. For this reason, the suction force of the upper suction conveyance belt means 3 decreases toward the downstream side, and the restraining force on the sheet material 1a is gradually reduced. Each suction box 19 is connected to a blower (not shown), and is exhausted by a suction action of the blower.
[0022]
As shown in FIG. 1, the peeling member 5 is disposed on the downstream side of the upper suction / conveyance belt means 3, and the sheet material 1a conveyed by the upper suction / conveyance belt means 3 as shown in FIG. From the belt 16 of the upper suction / transport belt means 3 downward. The peeling member 5 is specifically composed of a brush, and is intermittently arranged on a drive shaft 20 passed between the left and right frames (not shown) so as to enter between the suction boxes 19 of the upper suction / transport belt means 3. I have. The peeling member 5 may be constituted by a member such as a cam other than the brush. The peeling member 5 rotates at the same rotational speed as the plate cylinder of the printing press, and when the sheet 1a is conveyed by the upper suction conveying belt means 3, the rear end of the sheet 1a. In this case, the rear end is peeled off from the surface of the belt 16 of the upper suction and conveyance belt means 3 against the suction force of the upper suction and conveyance belt means 3. Since the suction ports 19c and 19d of the suction box 19 are small in the vicinity of the peeling member 5, the suction force of the upper suction conveyance belt means 3 is reduced, and the rear end of the single-sheet material 1a is upwardly suctioned. It can be easily peeled off from the belt 16 of the conveyor belt means 3. The rear end of the peeled sheet 1a is received and conveyed by the lower suction / conveyance belt means which is the third suction / conveyance belt means 6.
[0023]
In order to more smoothly and reliably transfer the sheet material 1a from the upper suction conveyance belt means 3 to the lower suction conveyance belt means 6, the contact position of the peeling member 5 with the sheet material 1a must be determined. It is desirable to slightly change according to the material, speed, etc. Therefore, a phase changing means for shifting the phase of the peeling member 5 with respect to the sheet 1a is provided in the drive unit of the peeling member 5. The phase changing means has a known configuration, and a detailed description thereof will be omitted.
[0024]
As shown in FIGS. 1 and 4, the lower suction transport belt means 6 includes an endless belt 21, and a drive shaft 22 and a driven shaft 23 that stretch the belt 21 in the traveling direction of the sheet-like article 1 a.
[0025]
The belt 21 of the lower suction / transport belt means 6 is a strong thin belt having a large number of small holes for ventilation at a constant pitch in the width direction and the length direction, similarly to the belt 16 of the upper suction / transport belt means 3. Are arranged in parallel along the running direction of the band-shaped object 1. These belts 21 are arranged so as to receive the single-wafer 1a from the lower surface thereof, and are hung between a drive shaft 22 at a start end and a driven shaft 23 at a rear end arranged in a direction perpendicular to the running direction. The upper suction transport belt means 3 travels at a speed lower than the traveling speed of the belt 16, for example, about 1/10 to 1/20.
[0026]
The drive shaft 22 on the start end side is formed as a suction roller, and a number of suction holes 22a are formed in the surface thereof. The drive shaft 22 is disposed directly below the peeling member 5. The drive shaft 22 is connected to a blower via a rotary joint (not shown), and sucks air from the suction hole 22a to suction the sheet material 1a on the belt 16 of the upper suction conveyance belt means 3. As shown in FIG. 4, when the peeling member 5 peels the sheet 1a from the belt 16 of the upper suction / transport belt means 3, the rear end of the sheet 1a is moved to the belt 21 of the lower suction / transport belt means 6. Through the surface of the drive shaft 22.
[0027]
Further, a suction box 24 is disposed at a position surrounded by the endless belt 21 of the lower suction / conveyance belt means 6, and its suction port (not shown) faces the upper traveling path of the belt 21 of the lower suction / conveyance belt means 6 from the back. In. The suction port is a long hole extending along the running direction of the single-wafer material 1a, and the opening area decreases toward the downstream side, so that the suction force of the single-wafer object 1a also decreases toward the downstream side. The suction box 24 is exhausted by a blower (not shown). The belt 21 of the lower suction / conveyance belt means 6 receives the sheet 1a peeled off from the upper suction / conveyance belt means 3 while traveling at a lower speed than the belt 16 of the upper suction / conveyance belt means 3, and is slowed down. 1 is discharged onto the pallet 26 of the deposition unit 25 shown in FIG.
[0028]
As illustrated in FIG. 1, the stacking unit 25 includes a pallet 26 suspended vertically by a chain 27 or the like. The pallet 26 is controlled by a control device (not shown) and descends as the amount of deposited single-wafer material 1a increases.
[0029]
In addition, joggers 28 a and 28 b and a temporary receiving device 29 are provided above the stacking unit 25.
[0030]
The joggers 28a and 28b apply vibration to the sheet 1a discharged onto the mountain 1b of the sheet 1a from the lower suction / conveying belt means 6, and align their edges.
[0031]
When the peak 1b of the sheet 1a reaches a certain height, the temporary receiving device 29 advances the fork-shaped receiving member 29a from below the lower suction conveyance belt means 6 onto the peak 1b of the sheet 1a. In this case, the falling single-wafer material 1a is received. While receiving the subsequent sheet material 1a by the temporary receiving device 29, the pile 1b of the already stacked sheet material 1a is carried out of the machine, and the new pallet 26 is raised just below the receiving member 29a. Then, the receiving member 29a is retracted to the original position, and the temporarily received sheet material 1a is dropped on the pallet 26. Thereafter, the single-wafer articles 1a are deposited on the pallet 26 in the same manner as the previous time.
[0032]
When the temporary receiving device 29 is provided in the stacking section 25 as described above, a space for the receiving member 29a of the temporary receiving device 29 to enter and leave the stacking section 25 must be provided. The head H from the means 6 to the fall of the sheet 1a on the mountain 1b becomes large, and the sheet 1a is simply discharged from the lower suction / conveyance belt means 6 onto the accumulation section 25. They cannot be properly stacked because they bend or break.
[0033]
Therefore, as shown in FIG. 1, a Coanda box 30 is installed above the stacking unit 25 so as to be continuous with the belt 16 of the upper suction and conveyance belt unit 3.
[0034]
As shown in FIG. 5, the Coanda box 30 has a large number of air ejection holes 30a formed on the bottom surface thereof so that air flows on the bottom surface of the elongated box along the longitudinal direction of the box. It is arranged so as to correspond to each of the belts 16 of the conveyor belt means 3 along the running direction of the single-wafer article 1a. The air ejection holes 30a are arranged such that the pitch increases from the upstream side to the downstream side of the flow of the single-wafer material 1a, and the flow velocity of the air decreases toward the downstream side. . As shown in FIG. 5 (A), when air is supplied from a blower (not shown) into the Coanda box 30, the air is fed from a number of air ejection holes 30a along the bottom surface of the ejection box to feed the sheet-like article 1a. The sheet 1a is conveyed without fluttering below the Coanda box 30 by the Coanda effect. Further, since the suction force of the Coanda box 30 decreases toward the downstream side, as shown in FIG. 6, the front end of the single-wafer article 1a gradually descends and comes into contact with the front jogger 28a. As a result, even when the drop H in the stacking section 25 is large, the single-wafer articles 1a are properly stacked.
[0035]
The Coanda box 30 may be installed horizontally on the stacking unit 25, but is preferably installed so as to be slightly inclined downward as shown in FIGS. Therefore, the single-wafer object 1a descends at a more appropriate angle and comes into contact with the front jogger 28a.
[0036]
Next, a series of operations of the cutting and discharging apparatus will be described.
[0037]
The rotary cutter 4 cuts the strip 1 every rotation. At the time of this cutting, the leading end of the strip 1 passes through the inside of the rotary cutter 4 before entering the cutting posture, enters under the belt 16 of the upper suction and conveyance belt means 3, and is sucked to the upstream side of the upper suction and conveyance belt means 3. You. For this reason, the belt-like material 1 is pulled between the upper suction and conveyance belt means 3 and the first suction and conveyance belt means 2 with an appropriate force. The strip 1 is cut by the rotary cutter 4 immediately thereafter.
[0038]
The belt 16 of the upper suction and conveyance belt means 3 runs at a slightly higher speed than the belt 7 of the first suction and conveyance belt means 2, and is therefore located between the rear end of the separated sheet 1 a and the front end of the strip 1. Has a gap. Thus, it is possible to prevent the front end of the succeeding single-wafer 1a from colliding with the rear end of the preceding single-wafer 1a.
[0039]
When the cut sheet material 1a is conveyed above the lower suction conveyance belt means 6 by the upper suction conveyance belt means 3, the peeling member 5 moves the rear end of the sheet material 1a to the upper suction conveyance belt means 3. 4 and is pressed against the driving roller 22 of the lower suction / transport belt means 6, as shown in FIG. The rear end of the single sheet 1a is curved following the surface of the drive roller 22, so that the front end of the next single sheet 1a does not sneak under the preceding single sheet 1a after the preceding single sheet 1a. Pass over the end. The sheet 1a adsorbed by the drive roller 22 is also adsorbed on the belt 21 and discharged onto the stacking section 25 in a decelerated state.
[0040]
The leading end of the single-wafer material 1a that comes out of the belt 21 of the lower suction / conveying belt means 6 at a low speed is captured by the Coanda box 30 and advances along the bottom surface of the Coanda box 30. Since the suction force of the Coanda box 30 decreases toward the tip of the box, the sheet-like article 1a falls on the hill 1b of the sheet-like article 1a without falling and bending or breaking as the head is gradually lowered. Deposited on
[0041]
When the peak 1b of the sheet 1a reaches a certain height, the receiving member 29a of the temporary receiving device 29 advances from below the lower suction conveyance belt means 6 onto the peak 1b of the sheet 1a and falls. The leaf 1a is received. While receiving the subsequent sheet material 1a by the temporary receiving device 29, the pile 1b of the already stacked sheet material 1a is carried out of the machine, and the new pallet 26 is raised just below the receiving member 29a. Then, the receiving member 29a is retracted to the original position, and the temporarily received sheet material 1a is dropped on the pallet 26.
[0042]
Thereafter, the single-wafer articles 1a are deposited on the pallet 26 in the same manner as the previous time.
[0043]
【The invention's effect】
According to the first aspect of the present invention, a rotary cutter for cutting a belt-shaped material to obtain a single-sheet material, an upper suction-conveying belt means for conveying the single-piece material cut by the rotary cutter while sucking the same, and an upper suction-conveying belt means A peeling member that peels the rear end of the sheet material that is conveyed while being sucked downward, and a lower member that sucks the sheet material peeled by the peeling member and conveys the sheet material at a lower speed than the upper suction conveying belt means. In a cutting and discharging apparatus including a suction conveyance belt unit and a stacking unit that receives and stacks the sheets discharged from the lower suction conveyance belt unit, a starting roller of the lower suction conveyance belt unit is formed as a suction roller, The peeling member is arranged so that the rear end of the sheet can be pressed on the suction roller, and receives the sheet conveyed to the lower suction conveyance belt means on the stacking portion. Since the cutting and discharging device is equipped with a Coanda box that conveys onto the stacking section while reducing the suction force, the sheet material is applied to the Coanda box on the stacking section with a moderate braking force and decelerated. As a result, the Coanda box gradually reduces the suction force in the traveling direction of the sheet. Therefore, the single-wafer objects fall on the deposition portion at an appropriate speed and posture, and are properly deposited on the deposition portion even if the head is large.
[0044]
According to the second aspect of the present invention, in the cutting and discharging apparatus according to the first aspect, the sheet cut by the rotary cutter is transferred to the upper suction transport belt between the rotary cutter and the upper suction transport belt. Since it is a cutting and discharging device provided with a Coanda box to be conveyed, the sheet material is adsorbed by the upper suction and conveyance belt means in a state where flutter is suppressed by the Coanda box, and thus is properly transferred to the lower suction and conveyance belt means and the stacking unit. Conveyed.
[0045]
According to the third aspect of the present invention, in the cutting and discharging apparatus according to the first or second aspect, the upper suction conveyance belt means gradually reduces the suction force from the lower suction conveyance belt means to the start end of the Coanda box. Since the cutting / discharging device is formed so as to convey a single sheet while transferring the single sheet, the single sheet smoothly moves from the lower suction / conveying belt means to the Coanda box, and is appropriately stacked on the stacking portion.
[Brief description of the drawings]
FIG. 1 is an overall elevation view of a cutting and discharging apparatus according to the present invention.
FIG. 2A is a vertical sectional view of a Coanda box arranged on the rotary cutter side of the cutting and discharging device, and FIG. 2B is a plan view.
FIG. 3A is a bottom view of a suction box of an upper suction conveyance belt means in the cutting and discharging apparatus, and FIG. 3B is a partially cutaway plan view of the conveyance belt means.
FIG. 4 is a partially cutaway view showing a peeling member and a lower suction conveyance belt means of the cutting and discharging device.
FIG. 5A is a vertical sectional view of a Coanda box arranged on a stacking portion of the cutting and discharging apparatus, and FIG. 5B is a bottom view.
FIG. 6 is an elevational view showing a stacking section of the cutting and discharging device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Strip 1a ... Sheet 3 ... Upper suction conveyance belt means 4 ... Rotary cutter 5 ... Peeling member 6 ... Lower suction conveyance belt means 15, 30 ... Coanda box 22 ... Suction roller 25 ... Deposition section

Claims (3)

A rotary cutter that cuts a strip to obtain a single-sheet material, an upper suction-conveying belt unit that conveys the single-sheet material cut by the rotary cutter while sucking the same, and a sheet that is conveyed while being suctioned by the upper suction-conveying belt unit A peeling member for peeling the rear end of the object downward, a lower suction / conveying belt means for sucking the sheet material peeled off by the peeling member and conveying at a lower speed than the upper suction / conveying belt means; And a stacking unit for stacking the sheets discharged from the belt means, wherein the starting roller of the lower suction conveyance belt means is formed as a suction roller, and the peeling member sucks the rear end of the sheet material. It is arranged so as to be able to be pressed on the roller, and receives the sheet material conveyed to the lower suction conveying belt means on the stacking section and conveys it onto the stacking section while gradually lowering the suction force. Cutting discharge apparatus characterized by under-box is installed. 2. The cutting and discharging apparatus according to claim 1, wherein a Coanda box is provided between the rotary cutter and the upper suction and conveyance belt means for conveying the sheet cut by the rotary cutter to the upper suction and conveyance belt means. A cutting and discharging device. 3. The cutting and discharging apparatus according to claim 1, wherein the upper suction transport belt means transports the sheet while gradually reducing the suction force from above the lower suction transport belt means to the start end of the Coanda box. A cutting and discharging device, wherein the cutting and discharging device is formed.

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