KR860001631B1 - Tail stopping and knockdown device - Google Patents

Abstract

A high-speed tape conveyer system has a slowdown assembly disposed downstream from a delivery end. The assembly includes a motor-driven slowdown roll spaced from a rotating brush roll(24) to form a nip through which sheets pass. Downstream of the nip is a collection zone. The slowdown roll is rotated at a slower speed than the conveyor system. Air is directed into the nip to press each sheet into driving engagement with the slowdown roll, so that a sheet trailing edge only is nipped.

Description

Apparatus and method for slowing down a continuously flowing cutting paper sheet

1 is a schematic side view of the speed reduction device and the ream removal device of the present invention.

2 is a schematic side view of a modified embodiment of the present invention.

3 is a schematic partial side view of a second embodiment of the speed reduction apparatus of the present invention.

4 is a schematic partial side view of a third embodiment of the speed reduction apparatus of the present invention.

5 is a schematic partial side view of a fourth embodiment of the speed reduction apparatus of the present invention.

* Explanation of symbols for main parts of the drawings

10, 12, 14, 16: Paper sheet 18: High speed tape conveyor system

20: high speed tape 22: rotary roll

24: upper brush roller 26: low speed rotary roller

36: Stacking pile 38: Ream

40: reamer separation spear 60, 62: free rotation conveyor

66: air table

The present invention relates to a machine for decelerating a cut paper sheet and removing a ream from the stacking station when the cut paper sheet is fed to a stacking station. A slowdown mechanism that resolves and collects one or more lines in a file and removes them.

In the conventional paper cutter system, it is a general phenomenon that the cut paper overlaps on the way into the stacking file. The problem with high-speed sheeting is to slow down the sheet sufficiently so that the tip of the paper is not damaged. To do this, it is inevitable that the sheets overlap, but in this case, the speed is increased so that the overlap reaches 100%. If limited, the maximum speed reaches 250-350fpm. In addition, high speed causes the problem that air enters into the stacking pile and the paper is not arranged neatly, making the handling of the rim difficult and achieving high quality.

The overlapping operation is usually performed by the high speed tape system and the low speed tape system, and the speed of the preceding sheet is decelerated when fed to the low speed tape by a suitable means such as a stop roller. An example of such a stop roll superposition process is described in US Pat. No. 3,554,534, where a snapdown roll is disposed upstream of the stop roll to move out of the tail of the sheet and to a low speed tape. The high speed tape system of the sheet is provided so as not to disturb the next sheet to be conveyed.

In the present invention, the conventional overlapping is removed. Instead of stopping the seat at the front end of the seat, a rail stopper is used, which is provided with an upward brush roller for retracting the tail in the first embodiment, so that the next seat is overlapped. The brush roller contacts the sheet near the tail, presses the sheet into the roll and proceeds at 250-350 fpm. If the brush leaves the roll, the sheet cannot be driven by the stacking pile, so the sheet stays on the roll until the brush is turned back and the tail of the sheet is placed under the tail of the next sheet. The brush then applies pressure on these sheets. The bottom sheet is then accelerated to 150-250fpm into the stacking pile, and the top sheet stays on the slow roll until the brush returns.

In the second embodiment, a fixed air blow-down is installed on a low speed rotating vacuum roll to stop the tail of the seat. In the third embodiment, the tail of the seat is pressed tightly by the nip wheel loaded with the vibration spring, and the nip wheel is operated by a signal for determining the position of the sheet filtration interval to maintain the proper position on the tail.

In the second and third embodiments of the present invention, the apparatus comprises a rubber coated or frictional floor vacuum or a simple nip roll whose rotational speed is on the order of 250-350 fpm.

This roll not only slows down the seat when the seat is pressed tightly into this roll, but also prevents the problem that the seat is caught in this part and does not enter the pile.

One or more lines are collected in the stacking pile, which achieves the compression necessary to squeeze all air from the pile. The rime is removed from the pile bottom by inserting a rime splitter device to a thickness equivalent to one rime. The pusher attached to this sphere moves the completed lime from the two free-rotating conveyors to the air table and conveys the lime from the machine. In alternative embodiments, the stacking pile and the air table may be inclined.

1 shows a series of paper sheets cut into individual paper sheets 10, 12, 14, 16 by a knife flowing in a sequential flow. The high speed tape conveyor system 18 with tape means 20 once supported by this roll 22 and the other end supported by a similar roll not shown in the drawing serves to convey the cut paper sheet at high speed, Paper sheets are transported at speeds up to 1500 feet per minute.

Immediately downstream of the rotary roll 22, there is provided a reduction device in accordance with the principles of the present invention. The embodiment of FIG. 1 is equipped with a tailstopping device consisting of an upper brush roll 24 and a low speed rotating roll 26. These rolls 24 and 26 are operated by an electric motor 28 which is operated by suitable gear means 30.

The low speed rotary roll 26 rotates at a surface speed of about 250-350 fpm. The brush roll has two brush members 32 and 24 which are opposed in the radial direction of the roll 24. As the sheet is fed by the conveyor system 18, the tip of the sheet passes between the two rolls 24 and 26, with the brush members 32 and 34 arranged almost horizontally so that the seat tip is between these two rolls. To pass through.

As the sheet continues to pass between the two rolls, one of the brush members is in contact with the seat portion near the tail and presses the sheet with the low speed rotary roll 26 downstream. If the continuously rotating brush member leaves the roll 26, the sheet is not driven by the stacking pile and the brush remains in the roll until the brush returns and exerts force on the next sheet. Thus, the brush member exerts pressure on both sheets. In FIG. 1, the brush member 32 pressurizes the tail of the sheet 10, during which the sheet 12 remains in the low-speed rotating roll 26. As shown in FIG. As the brush member exerts pressure on both sheets, the lower seat 12 is accelerated at a speed of about 150-250 tpm and enters the stacking pile like the seat 14.

The upper sheet 10 remains in the low speed rotary roll 26 until the brush member exerts pressure.

In this way, slow propagation towards the stacking pile is achieved.

Once one or more of the sheets of paper are collected in the stacking pile 36, the compression necessary to compress air from the pile is achieved. The lime 38 is removed from the bottom of the pile, as shown in FIG. 1 showing the state in which the lime 38 is being removed.

A recessless spherical body 40 having a pointed tip 42 for initial entry into the stacking pile 36 and a belt 44 is inserted into the stacking pile 36. This pointed tip separates the top sheet 46 of the lime 38 from the bottom sheet 48 of the stacking pile 36. The belt 44 on the spear 40 is supported by the front roller 50 at one end and the rear roller 52 at the other end.

When the spear is inserted into the stacking pile 36 to separate the retainer 38 from the remainder of the pile, the belt 44 rotates clockwise on the rolls 50 and 52 as shown in FIG. The portion of the belt 44 in contact with the bottom sheet 48 of the stacking pile 36 remains stationary relative to the bottom sheet 48 until the sphere is fully inserted into the stacking pile.

When the spear 40 engages the sides of the recess 38 and is inserted into the stacking pile 36, the pusher plate 54 for moving the outer surface 50 of the recess 38 laterally from the spear 40. Extending downward, the height of the pusher plate 54 is slightly higher than the thickness of the separated rime 38 so that the belt moves around the upper seat 46 and the rollers 50 and 52 of the removed rime 38. 44 provides clearance 58.

The stacking pile 36 is usually supported by a lift table consisting of two free-rotating conveyors 60, 62, with the two free-rotating conveyors 60, 62 being the bottom of the recess in the stacking pile 36. Engages with the sheet 64.

The two conveyors 60, 62 consist of separate lift tables, allowing the bearing to be supported while the spear 40 enters and retracts. The two conveyors 60 and 62 are installed to be independent of each other vertical movement so that the ream and the stacking pile 36 are continuously supported as necessary.

When the sphere is inserted into the stacking pile 36, the pusher plate 54 moves the recesses 38 supported on the free rotating conveyors 60 and 62 toward the air table 66.

As shown by the phantom line in the figure, when the recess 38 is placed on the air table 66, most of the paper weight is pressurized and supplied through the conduit 68 in the air table so that the air hole of the table top 70 It is supported by the air cushion of the air discharged to 72.

Longitudinal conveyor belts 74 and 76 extending above the surface 70 of the air table 96 are used to convey the individual lines to the next papermaking process.

As the spear retracts from the stacking pile 36, the smaller free-rotating conveyor 60 moves vertically to support the bottom of the stacking pile, and as soon as the spear is fully retracted, the second conveyor 62 moves vertically. Support stacking files.

The top sheet of the stacking pile, indicated by the sheet 16 of FIG. 1, preferably maintains the same level for the rolls 26, 24 throughout the entire stacking operation. Thus, as well as the freely rotating rolls 60 and 62, the spear 40 is mounted on the shaft 78 to move vertically.

In addition, as shown in FIG. 1, the housing 80 for the stacking pile 36 is provided with a cutting portion 82 corresponding to the entry portion of the spear 40, so that the pile is held in the housing 80. As shown in FIG. While the sphere is in contact with the stacking pile 36, the spear is moved downwards and the opposing wall 84 of the housing 80 due to the sheet loaded on the pile as the sphere moves into the stacking pile 36. When the sphere arrives, it passes under the wall 86.

2 shows a separate embodiment of a lime separation apparatus. Here, the stacking pile 36a, the spear mechanism 40a, the free-rotating conveyors 60a and 62a, and the air table 66a are inclined at the same angle to the corner, thereby facilitating the stacking process and the separating process. The air table 66a is provided with a side conveyor belt 88 driven by a motor 90, which is different from the bottom conveyor belts 74 and 76 of the first embodiment shown in FIG. Carry out the separation 38a separated by Sean. In all respects, the operation of the present embodiment is almost the same as the embodiment of FIG. 1 except that gravity is used to assist the arrangement of the stacking piles 36a and to facilitate the removal of the separated recesses 38a.

In FIG. 2 the brush roll 24 is in a different rotational position than in FIG. 1 and the paper sheet 92 is passed between the rolls 24 and 26 by the high speed tape mechanism 18. The brush member 34 also contacts the tail of the sheet 12 and drops the tail into the roll 26, where the sheet 10 lying on the roll 92 by the pressure of the brush member 34. Is accelerated into the stacking file 36a.

3 is another embodiment of the tail stopper and knockdown apparatus of the present invention, wherein the individual sheets 110, 112, 114, and 116 are driven by two high speed tapes 120 and 122 carrying the sheet at a speed of 150 fpm. Are supplied into the stacking file 118.

One end of the lower tape means 120 is supported by a roll 124 and the other end is supported by a similar roll not shown and the upper tape means 122 is supported by a roll 126, 128 and an additional roll not shown. .

The upper tape 122 extends to the right in FIG. 3 of the directional rotation roll 124 of the bottom tape 120.

Another embodiment of the speed reduction device of the present invention is provided downstream of the directional rotation roll 124.

The tail stop device of the embodiment of FIG. 3 is composed of a low-speed rotary vacuum roll 130 and a blowdown device 132. The vacuum roll 130 is rotated by the electric motor 126. Blower 138 is rotated by electric motor 136. The blower 138 is used to vacuum the vacuum roll 130 and to compress the hollow inside of the air nozzle 134.

The vacuum roll 130 is generally hollowed out and is provided with a series of openings 140, the blowers 138 being arranged to vacuum their hollow interiors whereby air is drawn from the openings 140. To be drawn radially inward. Since the vacuum roll 130 has a large number of openings 140, the suction force of any opening 140 is relatively low.

The blowdown device 132 is generally composed of a horizontally arranged cylindrical rotating housing 142, the lower end of the housing 142 is provided with a longitudinal slot 144 extending in the longitudinal direction. The housing 142 surrounds the nozzle 134, which is generally a hollow member, the long thin nozzle element 146 of which is a central passage extending radially outwardly of the nozzle member, i. 148).

The housing 142 is pivoted about its horizontal axis by the motor 136 so that the nozzle passage 148 once coincides with the slot opening 144 of the housing 142 each time the housing 142 is rotated once. It is.

The rotary housing 142 is surrounded by an air box 150, which is provided with a slot 152 that can be matched with the rotary slot 144 of the rotary housing 142.

Each time the housing 142 rotates once, the slots 144 and 152 coincide once, and air flows downward between the tape means 122 to apply a force to the tail of the paper sheet to the deceleration roll 130. Will be pressed. As the rotating housing 142 rotates, it blocks the air flowing into the slot 152, where the next sheet of paper sheet passes through this position.

The upstream side air box of the first slot 152 is provided with a second slot 154 in a horizontal arrangement, which directs the air in the direction of motion to vent the action between the paper and the air box 150. To generate a paper tip with respect to the upper tape 122.

In this way, the next leading edge of the paper is placed on the tail of the preceding paper sheet.

4 is another embodiment of the tail stop device and knockdown device of the present invention, wherein the individual paper sheets 160, 162 and 164 are fastened to the stacking pile 166 by a high speed tape means 168 at a speed of 1500 fpm. Supplied.

One end of the tape means 168 is supported by the directional rotation roll 170, the other end is supported by a similar roll not shown.

A second embodiment of the speed reduction device of the present invention, constructed in accordance with the principles of the present invention, is provided downstream of the directional rotary roll 170. The tail stopper of this embodiment consists of a vibrating spring load nip wheel, which is operated precisely by a signal which determines the position and spacing of the seat end so as to be maintained at the proper position of the seat tail.

The roll means, that is, the nip wheel 172, is provided to pivot at one end of the arm covered with the fixed point 176. The arm is continuously biased downward by the spring means 178 and is selectively forced upward by an actuating means such as a retracting piston, ie the piston 180.

4 shows a sheet position detecting means, i.e., a detector 182, which is an optical sensor type, which emits light to the detector 182 during a gap between successive paper sheets. Equipped with. The detector 182 is connected to the control means 186, which controls the valve means 188 connected to the piston 180. At a certain time, the piston 180 is retracted to elevate the nip wheel 172 to the position shown by the virtual line 190. Immediately before the tail of the seat passes through the nip wheel 172, the control means 186 relaxes the lifting means, ie the piston 180, and the spring 178 is biased so that the nip wheel 172 moves downwards. The tail of the low seat rotary roll 192 will be pressed. In this way the sheet slows down and falls into the stacking pile 166.

The low speed rotation roll 192 is rotated by the motor means 194, and the shape thereof is a vacuum roll having a vacuumed interior by the blower means 196, and the plurality of openings 198 are spaced apart from each other. It can be made into the form provided. The outer surface 200 of the roll 192 is rubber coated or high friction material to help the vacuum roll to grip the sheet.

FIG. 5 is another embodiment of the tail stopper shown in FIG. 1, which includes a plate 202 disposed between the downstream end of the rotary roll 22 and the upstream end of the low speed rotary roll 26a. have. In this embodiment each sheet is placed on the slow roll 26 to decelerate individually and immediately into the stacking pile rather than waiting for the next nip of the brush member 32.

The present invention is not limited to this embodiment and various changes and modifications can be made without departing from the scope of the claims.

Claims (55)

A high speed tape conveyor system (18) having a feed end and a seat conveying surface, a collection band, and a deceleration assembly disposed downstream of the feed end of the conveyor system (18) and upstream of the collection band; Has a deceleration roll means 26 of a motor drive rotating at a lower speed than the conveyor system 18, and a nip means for passing a sheet through the collection zone and forming a nip together with the deceleration roll 26, The nip means selectively presses each sheet so as to drive into engagement with the deceleration roll 26, whereby the tail of each sheet is pressed and the front end of the sheet is roll and nip wheel means. Apparatus for slowing down a continuously flowing cutting paper sheet, characterized in that passed through without interfering. 2. Reduction device according to claim 1, wherein the speed of the high speed tape conveyor is in the range of 400-1500 feet per minute. 3. The reduction apparatus as claimed in claim 2, wherein the surface speed of the reduction roll means is in the range of 250-350 feet per minute. 2. A reduction apparatus according to claim 1, wherein the reduction roll assembly has a tape surface arranged at a level below the seat conveying surface of the conveyor system. 5. Reduction device according to claim 4, characterized in that the nip means is arranged on the deceleration roll means (26). 2. The nip means according to claim 1, wherein the nip means consists of a rotating brush roll 24 spaced apart from the roll means 26, the length of which is sufficient to reach the roll 26 and is spaced apart from the roll means. Reduction device characterized in that it comprises at least one brush means (32, 34) extending radially to the furnace. 7. The reduction apparatus according to claim 6, wherein the brush roller (24) and the reduction roller (26) are rotated in opposite directions. 2. The nip means according to claim 1, characterized in that the nip means comprises air means, through which air selectively flows toward the deceleration rolls 26 to engage the seat with the deceleration rolls 26. Reduction gear made. 9. The rotary air control means 142 according to claim 8, wherein the nip means controls the direction of flow of air from the nozzle 34 so as to surround the nozzle 134 therein through the slot 144. Reduction device comprising a. 10. The air chamber means (150) of claim 9, wherein the nip means surrounds the air control means including a first slot means (152) between the air control means (142) and the deceleration roll means (130). Reduction device comprising a). 11. The high speed tape conveyor system (18) according to claim 10, wherein the first tape means (120) supported by the rotary roll (124) located upstream of the deceleration roll (130) and the rotary roll means (126, 128). Reduction device characterized in that it comprises a second tape means (122) supported by. 12. The method according to claim 11, wherein the air chamber means (150) includes an opening for a second slot (154) for flowing air in the direction of movement of the cut sheet. Reduction gear characterized in that it provides a venturi action to maintain in. 2. A reduction apparatus according to claim 1, wherein said nip means comprises a nip wheel (172) provided on a vibrating link, said nip wheel being moved so as to be attached and dropped by said deceleration roll means. 14. Reduction device according to claim 13, characterized in that the nip means comprises a detector (182) for detecting the gap between the leading end of the sheet and the continuous sheet. 15. The method according to claim 14, wherein the nip wheel 172 is responsive to the sensing means 182 and is moved away from the deceleration wheel means before the tip of each sheet passes between the nip wheel and the deceleration roll means. Reduction gear characterized in that. 16. The reduction apparatus according to claim 15, wherein said detector (182) is provided upstream of said deceleration roll means. 2. A reduction apparatus according to claim 1, comprising a support plate (202) positioned between the feed end of said conveyor system (18) and said deceleration roll means. 2. The reduction apparatus as claimed in claim 1, wherein the reduction roll means includes a rotating roll (26) which is not pressed. The vacuum roller according to claim 1, wherein the deceleration roll includes a vacuum rotating roll 192 composed of a hollow roll having a plurality of openings 198 for sucking air into the interior and the interior of which the vacuum is continuously vacuumed. Reduction device characterized in that. 20. The reduction apparatus according to claim 19, wherein the outer surface (200) of the vacuum rotating roll (192) has high surface friction. 20. The reduction apparatus according to claim 19, wherein the outer surface (200) is coated with a soft rubber material. 2. A reduction apparatus according to claim 1, wherein said collection zone consists of a substantially vertical stacking pile (36) partitioning an upstream wall and a downstream wall. 23. The reduction apparatus according to claim 22, wherein the two walls (84) are arranged almost vertically. 23. The reduction apparatus as set forth in claim 22, wherein said wall (84) is disposed at an angle with respect to the vertical and a lower portion of said wall is located upstream than an upper portion of said wall. 23. The speed reduction apparatus as claimed in claim 22, comprising recess removal means for automatically and continuously removing the recesses (38) of the sheet from the bottom of the stacking pile (36). 27. The method of claim 25, wherein the removal means comprises: a spear means (40) for separating the recess (38) from the stacking pile (26), and the separation (38) from the stacking pile (36). A pusher means coupled to the spear means 40 for pushing, a movable support means for supporting the bottom of the stacking pile 36, and a conveyor for transporting the removed rime 38 to a predetermined position Reduction device characterized in that consisting of means. 27. A belt as claimed in claim 26, characterized in that the spear means (40) comprises a free-rotating belt (44) for engaging the bottom seat (48) of the stacking pile (36) on the removed recess. Reduction gear. 27. The reduction apparatus according to claim 26, wherein said pusher means comprises a plate (54) extending downward from said spear means (40). 27. The movable support means according to claim 26, wherein the movable support means is movable towards the stacking pile 36 to support the stacking pile 36 and upon removal of the retainer 38 and clearance by the pusher means 58. Reduction device characterized in that it consists of a plurality of free-rotating conveyor (60, 62) movable away from the stacking pile (36). 27. The belt as claimed in claim 26, characterized in that the conveyor means comprises belt means (74, 76) for supporting the removed ream (38) and for engaging the table member and the ream (38) to move to a certain place. Reduction gear made. 31. The reduction apparatus according to claim 30, wherein said table member is comprised of an air table (66) having an air jet portion for supporting a portion of the weight of said lime (38). 31. A reduction apparatus according to claim 30, wherein said air table (66) has a substantially horizontal surface (70) and said moving belt means (74, 76) are substantially parallel to this surface (70). . 31. The reduction apparatus according to claim 30, wherein the air table (66) has a surface disposed at an angle with respect to the horizontal and the moving belt means (74, 76) are substantially perpendicular to this surface. 27. The method according to claim 26, wherein the spear means 40, the pusher means and the movable support means are vertically movable with each other such that the top sheet of the stacking pile 36 is maintained at the same level through the entire stacking operation. Reduction device characterized in that. A device for decelerating a cutting paper sheet sequentially flowing between a high speed tape conveyor system having a broadcast surface and a collecting band, the lower deceleration roll accommodating an upper nip means and a sheet passing from the conveyor system 18 to the collecting band. A reduction assembly having means, the lower low speed roller means driven by the motor means 28 to run at a lower speed than the speed tape conveyor 18, and the speed of the sheet as the sheet enters the collection zone. Reduction device characterized in that the upper nip means having a means for selectively pressing the tail of each sheet against the lower roll means to reduce the. 36. The reduction apparatus as set forth in claim 35, wherein said high speed tape conveyor (18) runs at about 400-1500 feet per minute. 37. A reduction apparatus according to claim 36, wherein the surface speed of the reduction roll means is about 250-350 feet per minute. 36. The device of claim 35, wherein the nip means comprises at least one brush means 32, 34 spaced apart from the roll means 26 and extending radially to a length sufficient to contact the roll means. Reduction device characterized in that consisting of a rotating brush roll (24). 39. The reduction apparatus according to claim 38, wherein the brush roll (24) and the deceleration roll means (26) rotate in opposite directions. 36. The method of claim 35, wherein the nip means comprises an air nozzle 134 through which the air flow is selectively directed to the deceleration roll 130 so that the sheet is engaged with the metal roll means and compressed. Reduction gear made of. 41. The method of claim 40, wherein the nip means includes rotating air control means 142 surrounding the air nozzle 134 to control the direction of air flow out of the nozzle 134 through its slot. Reduction device characterized in that. 42. The air conditioner of claim 41 wherein the nip means comprises an air chamber 150 surrounding the air control means with a first slot 152 between the air control means 142 and the deceleration roll means 130. Reduction device characterized in that. 43. The method of claim 42, wherein the high speed tape conveyor system (18) of the first tape means 120 and the deceleration roll means supported on the rotary roller means 124 installed upstream of the deceleration roll means (130). A second tape means 122 supported on the rotary roll means 126, 128 provided downstream, wherein the air chamber 150 acts to maintain the seat in the second conveyor tape means 122. Reduction device characterized in that it comprises a second slot (154) opening for flowing air in the direction of movement of the cutting sheet to provide. 36. The reduction apparatus as claimed in claim 35, wherein the nip means comprises a nip wheel (172) provided on the vibration link, the nip wheel being attached to and dropped from the deceleration roll means. 45. An apparatus according to claim 44, wherein said nip means comprises a detector (182) for detecting a gap between the leading end of said sheet and a continuous sheet. 46. The method of claim 45, wherein the nip wheel 172 is responsive to the detector 182, characterized in that the front end of the seat is moved away from the deceleration wheel means before passing between the roll means and the deceleration roll means. Reduction gear. 48. The reduction apparatus according to claim 46, wherein said detector (182) is provided upstream of said deceleration roll means. 36. The reduction apparatus according to claim 35, further comprising a support plate (202) provided between a supply end of the conveyor system and the reduction roll means. 36. The reduction apparatus according to claim 35, wherein the reduction roll means includes an unrolled rotary roll (26a). 36. The vacuum rolling roll 192 according to claim 35, wherein the reduction roll includes a vacuum rotating roll 192 composed of a hollow roll having a plurality of openings 198 for sucking air into the interior and an interior to be vacuumed continuously. Reduction device characterized in that. 51. The reduction apparatus as claimed in claim 50, wherein the outer surface (200) of the rotary roll (192) has a high frictional force surface. 51. The reduction apparatus according to claim 50, wherein the outer surface (200) is coated with a soft rubber material. A method of decelerating a cutting paper sheet sequentially flowing from a relatively high speed conveyor system having a conveying surface to a collection zone, wherein the sheet is dropped from a supply end of the high speed tape conveyor system such that the leading edge of each sheet extends horizontally outward. Slow down and delay each sheet downstream of the feed end by passing each sheet through a slow down nip forced by the upper nip means and the lower low speed roller means so that the tail of each sheet is pressed and the tip of each sheet is passed unimpeded. And directing each sheet through the deceleration nip at a slower speed than the slow roll means so that each sheet individually passes through the collection zone at low speed. 54. The method as claimed in claim 53, wherein said low speed roller means is driven in a continuous rotational state, and wherein each sheet is selectively intermittently bonded to said upper nip means in engaging the lower roller means. . 55. The method according to claim 54, comprising controlling the nipping of said upper nip means to grip each sheet in the tail portion of each sheet.

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