JP2008150142A - Paper feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper feeding device of simple structure capable of feeding multiple stacked sheets, maintaining the top surface of the stacked sheets, or capable of feeding the multiple stacked sheets upside down. <P>SOLUTION: This paper feeding device comprises a separator device 30 for separating the stacked sheets S into blocks by raising several number of sheets s from a head upward, a sheet block turning device 40 for pushing an upper part of the back surface of the divided sheet block B downstream to fall them, and a sheet block feeding device 60 for picking up the divided sheet block B when oscillating upward and conveying them downstream. The divided sheet block B is fed while turning the top surface of the stacked sheets downward by the operation of the sheet block turning device 40 and the sheet block feeding device 60, and the sheet block B is fed while maintaining the top surface thereof by the operation of the only sheet block feeding device 60. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paper feeding device that continuously supplies thick paperboard such as a corrugated cardboard sheet to a sheet processing machine such as a printing machine.

  Generally, many cardboard sheets manufactured by a corrugator are stacked with the front liner facing down. The stacked corrugated cardboard sheets are usually supplied to a sheet processing machine such as a printing machine or a crease grooving device and subjected to appropriate processing.

  Here, there are two types of printing machines as sheet processing machines: a type that prints on the upper surface side of a sheet and a type that prints on the lower surface side. These single-sided printing machines use a paperboard (hereinafter simply referred to as a sheet). In other words, after printing on one side of the sheet, it is necessary to stack the sheets, turn the stacked sheets upside down, and supply them to the printing machine.

  Further, when printing is performed on the front liner on the lower surface side of the stacked corrugated cardboard sheets using a single-sided printing machine of the upper surface printing type, it is necessary to turn the corrugated sheets upside down and supply them to the printing machine.

  Here, Patent Document 1 discloses a sheet feeding device that can send a large number of stacked sheets with the upper surface in the stacked state as it is, or can be sent upside down. is suggesting.

  In the sheet feeding device, a tilting table that can swing about a horizontal axis is held in a horizontal state, and a swivel base is provided on the upper surface, and the feed conveyor is supported by the swivel base. A pair of sheet receiving devices are provided at both ends of the sheet so as to be freely raised and lowered, and the stacked sheet is fed onto one of the horizontal sheet receiving devices disposed below, with the tilting table being substantially vertical. When supported by one sheet receiver, the tilting table is tilted until the feeding conveyor is leveled.

  And, when the stacked sheets are sent with the upper surface in the stacked state upside down, the other sheet receiving device arranged on the downstream side in the sheet conveying direction is turned down, the stacked sheets are turned down on the downstream side, The sheet is fed out by driving the feeding conveyor and the other sheet receiving apparatus that is turned over.

  In addition, when the stacked sheets are sent with the upper surface in the stacked state as it is, after the feeding conveyor is made horizontal by the swinging of the tilting table, the swivel table is rotated 180 ° around the vertical axis. One sheet receiving device is disposed on the downstream side, the one sheet receiving device is laid down, and the sheet is fed out by driving the feeding conveyor and the one sheet receiving device laid down.

Japanese Patent Publication No. 7-76063

  By the way, in the paper feeding device described in Patent Document 1, a swivel base is provided on the upper surface side of the tilting table in a horizontal state, and the feed conveyor and the pair of sheet receiving devices are supported by the swivel base. When the paper device is enlarged and the stacked sheets are fed with the upper surface in the stacked state as it is, it is necessary to rotate the extremely heavy swivel, so a large rotation drive device that swivels the swivel is used. There is an inconvenience that it must be used.

  In addition, since the stacked sheets sent to the sheet receiving device are supported by an underlay such as a plywood board and are sent to the sheet receiving device together with the underlay, when the stacked sheets are sent with the upper surface in the stacked state intact, After turning, after removing the underlay, it is necessary to lay down one of the sheet receiving apparatuses, or to remove the underlay after the sheet receiving apparatus is overturned.

  The problem of the present invention is that a number of stacked sheets can be sent out with the upper surface in the stacked state as it is, or in a simple configuration that can be sent upside down, An object of the present invention is to provide a paper feeding device that allows easy removal of the underlay.

In order to solve the above-described problems, in the present invention, a tilting table that is swung between a substantially vertical position in a state in which a sheet is received and an inclined position in a state in which the upper end falls to the downstream side and the sheet is fed out. A sheet feeding device supported by the tilting table so that the sheet conveying surface is in a substantially vertical state with the tilting table receiving sheets, and a stacked sheet fed in the tilting table being substantially vertical. Receiving and supporting the stacked sheets at the sheet feeding position of the tilting table with the sheet feeding device, and moving the stacked sheets toward the unloading end with the sheet feeding device; and at the sheet feeding position of the tilting table. A separator device that divides the stacked sheets into blocks by lifting several sheets from the top sheet onto the sheet conveying surface;
A sheet block reversing device that presses the back upper part of the divided sheet block toward the carry-out end side of the sheet feeding device, and lies down so that the upper surface in the stacked state faces downward, and a sheet feeding device The carry-in end facing the carry-out end can be swung up and down about the carry-out end so that the carry-in end can move up and down. Raise the upper end part so that the upper end part falls to the upstream side, or, when the seat block reversing device operates, the upper side part of the sheet block inversion unit causes the upper end part to fall down on the downstream side. A sheet block feeding device that discharges the paper downstream as it is or in a stacked state with the top surface facing downward Than is adopted the configuration made.

  In the paper feeding device having the above-described configuration, when feeding paper, first, the tilting base is set to a position where the sheet is received, and the support member is placed in a horizontal state at the lower end portion of the sheet feeding device, and then is placed on the support member. Supply stack sheets.

  After supplying the stacked sheets, the tilting table is swung to tilt the upper end thereof to the downstream side, the sheets are fed out, the sheet feeding device and the support member are driven, and the leading sheet of the stacked sheets is located above the separator device. The stacked sheets are moved obliquely upward to the position where they are arranged.

  When the separator device is operated after the movement of the stacked sheets is stopped, a bundle of several sheets is lifted from the top and divided into blocks.

  Here, when the upper surface in the stacked state of sheets is turned upside down, the sheet block reversing device is operated, and the back upper part of the sheet block divided into blocks by the sheet block reversing device is used as the carry-out end of the sheet feeding device. Then, the sheet block feeding device is driven substantially simultaneously with the pressing, and the sheet block feeding device is swung upward.

  By pressing the back upper part of the sheet block by the sheet block reversing device, the sheet block is turned over to the carry-out end side of the sheet feeding device, and the upper surface in the stacked state faces downward.

  At the time of the fall, the sheet block sending device swings upward, so that the sheet block to be turned down is supported by the sheet block sending device and sent to the downstream side to be discharged from the discharge end. Is sent to a sheet processing machine arranged on the downstream side with the upper surface in the stacked state facing downward.

  On the other hand, when feeding the sheets as they are in the stacked state, the sheet block feeding device is driven without operating the sheet block reversing device after the first several sheets of the bundle are divided into blocks by the separator device And swinging upward.

  By swinging upward of the sheet block feeding device, the divided block is pulled up by the sheet block feeding device so that the upper end of the sheet block is placed on the upstream side, and the sheet faces upward when stacked. In this state, the sheet block is fed from the discharge end of the sheet block feeding device.

  As described above, according to the present invention, after the stacked sheets are lifted up from the first sheet by the separator device and divided into blocks, the sheet block reversing device is operated and at the same time the sheet block feeding device is directed upward. By swinging the sheet, the upper surface in the stacked state is faced downward, or after dividing the block, only the sheet block feeding device is swung upward to leave the sheet in the stacked state as it is. Therefore, the stacked sheets can be sent out with the upper surface in the stacked state as it is, or can be automatically sent out in an extremely smooth state by turning upside down.

  Further, by providing a separator device, a sheet block reversing device, and a sheet block feeding device at the carry-out end portion of the sheet feeding device supported by the tilting table, the stacked sheets are sent out with the upper surface in the stacked state as it is, Alternatively, since the sheet can be sent upside down, a sheet feeding device having a simple configuration can be obtained.

  Furthermore, since the stacked sheets are sent out in order from the upper sheet, the underlay such as a plywood plate that supports the stacked sheets is left on the support member after all the sheets are sent out, and the underlay can be easily taken out. .

  Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the stacked sheet S in which a large number of sheets s are stacked is supported by the underlay A and conveyed downstream by the roller conveyor 1.

  A tilting table 2 is provided on the downstream side of the roller conveyor 1. The tilting table 2 is supported so as to be swingable in the vertical direction about a horizontal shaft 4 (shown in FIG. 1) supported by the side frame 3a of the machine base 3 shown in FIG. The operation of the moving cylinder 5 causes the sheet receiving position in a state of being substantially vertical as shown by the chain line a in FIG. 1 and receiving the stacked sheets S, and the upper end to fall downstream as shown by the solid line in FIG. The sheet is oscillated between the sheet feeding position and the sheet feeding position where the sheet is sequentially fed from the upper part of the stacked sheets S.

  The tilting table 2 has a pair of rail members 6 on both sides, and a sheet feeding device 10 is provided between the pair of rail members 6. The sheet feeding apparatus 10 includes two rows of belt conveyors 10a. The belt conveyors 10a in each row are supported by the tilting table 2 so that the sheet conveying surface of the carrier side belt is in a substantially vertical state at the sheet receiving position of the tilting table 2, and are driven by a motor (not shown) as indicated by the arrow in FIG. It is moved in the direction indicated by. Here, the carrier side belts of the belt conveyors 10a in each row are supported by the belt guide plate 11 shown in FIG.

  A support member 20 is provided between the pair of rail members 6 of the tilting table 2. The support member 20 is configured such that a plurality of strip-shaped plate bodies 22 are provided in a comb-like shape on a bar member 21 having a length extending between a pair of rail members 6 of the tilting table 2, and both end portions of the bar member 21 are The rail member 6 is slidably supported.

  The plurality of plates 22 of the support member 20 are in a substantially horizontal state at the sheet receiving position of the tilting table 2, and receive the stacked sheets S fed from the roller conveyor 1 while being arranged at the carry-in end of the sheet feeding device 10. It comes to support. After the stacked sheet S is received, when the tilting table 2 is swung and held at the sheet feeding position, the stacked sheet S is supported by the tilting table 2 and the sheet feeding device 10. .

  Further, the support member 20 moves with the movement of the carrier side belt of the belt conveyor 10a in the sheet feeding device 10 and moves intermittently with a constant stroke in the same direction as the carrier side belt. .

  As shown in FIGS. 3 and 4, at the sheet feeding position of the tilting table 2, the leading sheet s of the upper layer portion of the stacked sheets S supported by the sheet feeding device 10 is disposed at the carry-out end portion of the sheet feeding device 10. Is provided with a separator device 30 for lifting several sheets s onto the sheet conveying surface and dividing them into blocks.

  The separator device 30 includes a lifting cylinder 32 supported by a support bar 31 extending between a pair of side frames 3 a of the machine base 3, a bracket 34 moved up and down in a substantially vertical direction by the cylinder 32, When the seat support plate 33 swingably supported around the pin 35 passed between the side plates 34a facing each other on both sides and the upper block support surface 33a are inclined upward toward the downstream side. A swing cylinder 36 that swings the sheet support plate 33 between a tilted position that tilts in the same direction as the carrier side belt of the two rows of belt conveyors 10a and a horizontal position that is substantially horizontal, The sheet support plate 33 in an inclined state is moved from the standby position positioned below the sheet conveyance surface of the sheet feeding device 10 by the lifting cylinder 32. It is raised to a linear direction so as to lift the plurality of sheets s from the beginning of the stack sheet S supported by the sheet feeding apparatus 10.

  Here, an upstream end of the block support surface 33a of the sheet support plate 33 is provided with a prevention claw 33b for preventing the sheet block B divided into blocks from slipping down. Further, the lower end portion of the sheet block B divided by the upward movement of the sheet support plate 33 in the substantially vertical direction is separated from the lower end portion of the next sheet s remaining on the conveying surface of the sheet feeding device 10 to the downstream side. A gap is formed between the lower ends.

  The sheet block B divided into blocks by the separator device 30 is tilted by the sheet block reversing device 40 shown in FIGS. 1 and 2 as necessary so that the upper surface in the stacked state faces downward.

  7 to 9 show details of the sheet block reversing device 40, and the configuration is as follows. That is, in the seat block reversing device 40, a bearing 42 is fixed to a stay 41 projecting horizontally from the outer surface of one side frame 3a of the machine base 3, and both ends thereof are freely rotatable by a forked piece 42a of the bearing 42. The kicking arm 44 that can be engaged with the upper part of the back surface of the seat block B is swung around the fulcrum shaft 43 that is supported on the back of the seat block B. The upper part is configured to be pushed toward the carry-out end of the sheet feeding device 10.

  Here, the fulcrum shaft 43 is rotated by a motor 45 supported by the stay 41, and a support piece 47 provided on the guide member 46 is fixed to the fulcrum shaft 43.

  Further, the guide member 46 supports the elongated screw shaft holder 48 so as to be slidable in the length direction thereof, and both end portions of the screw shaft 49 are provided by a pair of support pieces 48a provided so as to face both end portions of the screw shaft holder 48. Is fixed to the guide member 46, and the screw shaft 49 is rotated by the drive of a motor 51 connected to the lower end portion thereof, so that the screw shaft holder 48 is rotated. Can be adjusted in the length direction.

  Further, a first arm 52 is provided on the upper end portion of the screw shaft holder 48 so as to project on the sheet feeding device 10, and a rear end portion of the kicking arm 44 is secured by a second arm 53 fixed to the front end portion of the first arm 52. The cylinder 55 connected to the rear end of the kicking arm 44 is supported by the second arm 53, and the cylinder 55 is operated around the pin 54 by the operation of the cylinder 55. The tip is swung in the vertical direction.

  As shown in FIGS. 3 and 5, a sheet block feeding device 60 is provided at the carry-out end portion of the sheet feeding device 10.

  The sheet block sending device 60 includes two rows of belt conveyors 61. Each belt conveyor 61 rotatably supports a head pulley 63 and a tail pulley 64 by a pair of conveyor frames 62, a belt 65 is stretched between the pulleys 63, 64, and a carrier side belt of the belt 65 is used as a belt support plate. 66 is supported.

  Each belt conveyor 61 is supported at its carry-out end by a shaft 67 passed between the tip ends of the rail members 6 in the tilting table 2, and the carry-in end located between the two belt conveyors 10 a of the sheet feeding device 10. Is swingable in the direction of vertical movement.

  The two rows of belt conveyors 61 are swung around a shaft 67 by the operation of a cylinder 68 connected to the conveyor frame 62, and pass upward through the sheet support plate 33 so that the conveying surface thereof is substantially horizontal. The sheet block B supported by the sheet support plate 33 of the separator device 30 can be scooped up and received.

  As shown in FIGS. 1 and 2, the sheet block B sent out from the sheet block sending device 60 is received and arranged downstream of the tilting table 2 in the state where the sheet is fed out. A feed conveyor 70 is provided to feed the sheet processing machine. On the conveyance surface of the feed conveyor 70, a gate plate 72 is provided to form a gate 71 through which several sheets s can pass between the sheet conveyor B and the sheet block B is wrapped by the gate plate 72. The feed posture is changed to the state.

  A sheet block delivery device 90 that delivers the sheet block B from the sheet block delivery device 60 to the feed conveyor 70 is provided on the conveyance surface of the feed conveyor 70.

  10 to 12 show the details of the sheet block transfer device 90, which are configured as follows. That is, the sheet block delivery device 90 includes a lift 92 supported by a fixed support frame 91 so as to be lifted and lowered, a lift drive device 93 that moves the lift 92 up and down, and a sheet block delivery device 60 by the lift 92. And a reciprocating device 95 for reciprocating the transfer member 94.

  The support frame 91 has four guide shafts 96 on both sides, and supports the lifting platform 92 along the guide shafts 96 so as to be movable up and down. The lifting platform 92 has a pair of side plates 92a on both sides, and rotatably supports a plurality of guide rollers 97 that movably support the transfer member 94 on the opposing inner surface of the side plates 92a.

  The elevating drive device 93 is provided with a pair of sprockets 93a and 93b on the upper and lower sides, a part of a chain 93c spanned between the sprockets 93a and 93b is connected to the elevating platform 92, and the elevating platform 92 is moved by moving the chain 93c. A certain stroke is moved up and down.

  The delivery member 94 has a pair of guide bars 94a supported by a plurality of guide rollers 97 so as to be slidable in the horizontal direction on both sides, and a plurality of receiving rollers 94b between the upstream end portions of the pair of guide bars 94a. Is provided on the downstream side of the receiving roller 94b, and a guide plate 94c that rises vertically on the conveying surface of the receiving roller 94b is provided.

  Here, in the delivery member 94, a position where the most advanced receiving roller 94b is arranged upstream of the discharge end of the sheet block feeding device 60 is set as a forward stop position, and the receiving roller 94b is a sheet block of the gate plate 72. The position where the guide surface is sunk downstream is set as the reverse stop position.

  Further, the transfer member 94 that is moved up and down by the raising and lowering movement of the lifting platform 92 is disposed slightly below the conveying surface of the belt conveyor 61 in a state where the conveying surface of the receiving roller 94 b is substantially horizontal of the sheet block feeding device 60. The upper end portion of the sheet block B composed of the sheet s having a large width on the conveying surface of the belt conveyor 61 in a state where the position is the descent stop position and is substantially horizontal is tilted downstream by the sheet block reversing device 40. At this time, a position where the most advanced receiving roller 94b receives the sheet block B is set as a rising stop position.

  The reciprocating device 95 fixes a rack 95a to each inner side surface of the pair of guide bars 94a of the delivery member 94, and each rack 95a meshes with a pinion 95b rotatably supported by a lifting platform 92, and the pinion 95b is rotated by a motor 95c supported by a lifting platform 92.

  The sheet feeding device shown in the embodiment has the above-described structure. When feeding a sheet processing machine, first, the tilting table 2 is set to receive the stacked sheets S, and the support member 20 is placed at the lower end of the sheet feeding device 10. After the horizontal state, the stacked sheets S are supplied onto the support member 20.

  After supplying the stacked sheets S, the swinging cylinder 5 is operated to swing the tilting table 2, and the posture is changed to the sheet feeding position where the upper end is tilted downstream. By changing the posture of the tilting table 2, the stacked sheets S are brought into a state where the upper end of the stacked sheets S falls downstream, and the stacked sheets S are supported by the plate body 22 of the support member 20 and the two rows of belt conveyors 10 a of the sheet feeding device 10. .

  As described above, after changing the posture of the tilting table 2 to the sheet feeding state, the sheet feeding device 10 and the support member 20 are driven, and the leading sheet s of the stacked sheets S is located above the sheet support plate 33 of the separator device 30. The stacked sheets S are moved obliquely upward to the position where they are disposed, and after the movement, the sheet feeding device 10 and the support member 20 are stopped.

  After the movement of the stacked sheets S is stopped, when the sheet support plate 33 that is inclined in the upward gradient toward the downstream side is moved upward by the operation of the cylinder 32 of the separator device 30, several sheets s from the top are formed. It is lifted by the support plate 33 and divided into blocks.

  At this time, since the sheet support plate 33 in the inclined state is moved in a substantially vertical direction with respect to the stacked sheets S held in the inclined state, the lower end portion of the sheet block B divided into blocks is the lower end of the next sheet s. The upper part of the seat block B is lifted in contact with the upper part of the front side of the next sheet s.

  For this reason, the next sheet s is not pulled up by contact with the sheet block B which is divided into blocks and lifted, and only a predetermined number of sheets s are reliably lifted, as shown in FIG. It will be divided into blocks.

  Here, the sheet block reversing device 40 is operated when the sheet s is fed in a state where the upper surface side facing upward in the stacked state is turned upside down. When the seat block reversing device 40 is operated, the guide member 46 is pivoted downward by driving the motor 45 shown in FIG. 9 and the kicking arm 44 is operated by operating the cylinder 55 shown in FIG. The position of the kicking arm 44 is set so that the tip of the kicking arm 44 is disposed at a position that can be opposed to the upper part of the rear surface located on the upstream side of the seat block B by swinging downward toward the upstream side. Adjust in advance.

  When adjusting the position of the kicking arm 44, the screw shaft 49 is rotated by driving the motor 51 shown in FIG. The screw shaft holder 48 moves in the length direction by the rotation of the screw shaft 49, and the height position of the kicking arm 44 is adjusted by the movement.

  After adjusting the position of the kicking arm 44 as described above, the kicking arm 44 is swung in the direction in which the tip of the kicking arm 44 moves upward toward the downstream side by the operation of the cylinder 55 shown in FIG. At the same time, the drive of the motor 45 shown in FIG. 9 causes the guide member 46 to swing downward toward the upstream side as indicated by the arrow in FIG. 7, and after the leading end of the kicking arm 44 passes the upper side of the seat block B. When the motor 45 is stopped and the kicking arm 44 is swung downwardly toward the upstream side by the operation of the cylinder 55, as shown in FIG. 13, the leading end of the kicking arm 44 is divided into blocks. Opposite the top of the back.

  When the guide member 46 is swung upward in the direction opposite to the arrow shown in FIG. 7 by driving the motor 45 shown in FIG. 13 from the state shown in FIG. The front end of the sheet presses the sheet block B toward the carry-out end of the sheet feeding device 10. Simultaneously with the pressing, the seat support plate 33 is swung in a substantially horizontal direction by the operation of the swinging cylinder 36 shown in FIG. As the seat support plate 33 swings, the downstream end of the seat block B is lifted. Further, the pushing of the kicking arm 44 causes the seat block B to swing around the lower surface supported by the seat support plate 33 in a substantially horizontal state, and as shown in FIG. Then, it falls down and begins to lie down on the carry-out end side of the sheet feeding device 10.

  The cylinder 68 shown in FIG. 14 is operated almost simultaneously with the start of the seat block B being overturned by the sheet block reversing device 40, and the two rows of belt conveyors 61 of the sheet block feeding device 60 are swung upwards about the shaft 67. Move. Due to the upward swing of the belt conveyor 61, the sheet block B lying down on the sheet support plate 33 is scooped up from the sheet support plate 33 of the separator device 30 by the belt conveyor 61 as shown in FIG.

  As shown in FIG. 16, when the belt conveyor 61 is swung to a position where the sheet conveying surfaces of the belt conveyors 61 in each row are substantially horizontal, the sheet block B is laid down on the sheet conveying surface of the belt conveyor 61. In the stacked state, the upper surface facing upward is supported by the sheet conveying surface in a state where the upper surface is directed downward, and is conveyed downstream by the belt conveyor 61.

  Here, when the sheet s of the sheet block B reversed by the sheet block reversing device 40 is large enough to be supported by the belt conveyor 61 as described above, the elevator 92 of the sheet block delivery device 90 is lowered. While being held at the stop position, the transfer member 94 is held at the forward stop position where the most advanced receiving roller 94b faces the upstream side from the discharge end of the sheet block feeding device 60, as shown by a chain line in FIG. .

  For this reason, when the sheet block B inverted by the belt conveyor 61 of the sheet block sending device 60 is sent out, the leading end of the sheet block B is supported by the plurality of receiving rollers 94b of the delivery member 94.

  As shown in FIG. 16, the transfer member 94 is rotated at the same speed as the conveying speed of the sheet block delivery device 60 by the rotation of the pinion 95b shown in FIG. 10 with the leading end of the sheet block B being delivered to the contact position of the guide plate 94c. When retracted, the sheet block B is conveyed onto the carry-in end portion of the feed conveyor 70 by both the sheet block delivery device 60 and the delivery member 94.

  When the transfer member 94 is retracted to a position where it is sunk downstream from the sheet block guide surface of the gate plate 72, the sheet block B falls while the front end surface is guided by the gate plate 72, and on the carry-in end portion of the feed conveyor 70. Is supplied onto the sheet block B that has been fed first. The sheet block B supplied on the feed conveyor 70 is sent to the sheet processing machine in order from the lower sheet s.

  Here, when the sheet block B is conveyed by the belt conveyor 61 of each row of the sheet block sending device 60, the sheet support plate 33 is lowered by the operation of the cylinder 32 shown in FIG. 16 and returned to the standby position. Further, when the sheet block B is sent out from the belt conveyor 61, the operation of the cylinder 68 shown in the figure causes the belt conveyor 61 to swing downward about the shaft 67 and return to the standby position. .

  Further, when the sheet block B is supplied onto the carry-in end portion of the feed conveyor 70, the transfer member 94 is moved forward in the horizontal direction toward the upstream side and stopped and held in a state of receiving the next sheet block B.

  Thereafter, the stacked sheets S are conveyed to a position where the leading sheet s faces the sheet support plate 33 by the movement of the sheet feeding device 10 and the support member 20. Thereafter, by repeating the above operation, the sheet blocks B are successively fed onto the feed conveyor 70, and when the last sheet s is fed, the underlay A is left on the plate 22 of the support member 20. For this reason, the underlay A can be easily removed.

  Here, as shown in FIG. 13, when the belt conveyor 61 receives the sheet block B from the sheet support plate 33 and swings to a position where the sheet conveying surface is substantially horizontal, the sheet block B is upstream from the belt conveyor 61. There is a possibility of falling.

  Therefore, in the embodiment, as shown in FIG. 6, a slip-off prevention arm 82 is provided on the outer surface of the conveyor frame 62 of the belt conveyor 61 so as to swing up and down around the pin 81 by the operation of the cylinder 80. Immediately before the belt conveyor 61 swinging upwardly scoops up the sheet block B on the sheet support plate 33, the upstream end of the slip prevention arm 82 is swung upward about the pin 81, The upstream end is positioned at the lower back of the seat block B to prevent the seat block B from slipping down.

  If the sheet s of the sheet block B reversed by the sheet block reversing device 40 is so large that the entire surface of the sheet block B cannot be supported by the belt conveyor 61, the lifting platform 92 of the sheet block delivery device 90 is changed. While being held at the ascending stop position, as shown in FIG. 17, the most advanced receiving roller 94b of the delivery member 94 is held at the advance stop position facing the upstream side from the discharge end of the sheet block feeding device 60, The upper end portion of the sheet s on the opposite side (downstream side) of the sheet block B reversed by the kicking arm 44 to the side in contact with the kicking arm 44 (downstream side) is supported by the most advanced receiving roller 94b of the transfer member 94. To do.

  Then, when the upper end portion of the sheet block B is supported by the receiving roller 94b, the transfer member 94 is moved backward at a speed substantially equal to the conveying speed of the sheet block feeding device 60, as shown in FIG. The sheet block B is laid down so that the upper end portion thereof gradually falls toward the downstream side, and is supplied onto the sheet block previously fed onto the feed conveyor 70.

  On the other hand, when feeding the sheets s in the stacked state as they are, as shown in FIG. 13, the leading several sheets s are bundled by moving the sheet support plate 33 upward of the separator device 30 as shown in FIG. Then, the upstream side of the sheet block sending device 60 is swung upwardly about the downstream shaft 67 while driving the two rows of belt conveyors 61.

  As shown in FIGS. 19 and 20, the sheet block B on the sheet support plate 33 divided into blocks by the swinging upward of the belt conveyor 61 is scooped up by the double-row belt conveyor 61 and its upper end portion. , And the sheet s is fed from the belt conveyor 61 to the feed conveyor 70 as shown in FIG.

  At this time, the elevator 92 of the sheet block delivery device 90 is held at the lowering stop position, and the most advanced delivery roller 94b is ejected from the sheet block delivery device 60 as shown by the chain line in FIG. It is held at the forward stop position facing the upstream side from the end.

  For this reason, when the sheet block B is sent out by the belt conveyor 61 of the sheet block sending device 60, the leading end of the sheet block B is supported by the plurality of receiving rollers 94 b of the delivery member 94.

  As shown in FIG. 21, the transfer member 94 is moved downstream at the same speed as the sheet block delivery device 60 by the rotation of the pinion 95b shown in FIG. When retracted, the sheet block B is conveyed onto the carry-in end portion of the feed conveyor 70 by both the sheet block delivery device 60 and the delivery member 94.

  When the transfer member 94 is retracted from the sheet block guide surface of the gate plate 72 to a position where it is sunk downstream, the sheet block B falls while the front end surface is guided by the gate plate 72, so Is supplied onto the sheet block B which has been previously fed. The sheet block B supplied on the feed conveyor 70 is sent to the downstream sheet processing machine in order from the lower sheet s.

  Here, when the sheet block B is conveyed by the belt conveyor 61 of the sheet block feeding device 60, the sheet support plate 33 is lowered by the operation of the cylinder 32 shown in FIG. 15, and returned to the standby position as shown in FIG. It is. When the sheet block B is sent out from the belt conveyor 61, the upstream side of the belt conveyor 61 is swung downward about the downstream shaft 67 by the operation of the cylinder 68 shown in FIG. Returned to

  Further, when the sheet block B is supplied onto the carry-in end portion of the feed conveyor 70, the transfer member 94 is advanced to the upstream side and stopped and held in a state of receiving the next sheet block B.

  Thereafter, the stacked sheets S are conveyed to a position where the leading sheet s faces the sheet support plate 33 by the movement of the sheet feeding device 10 and the support member 20. Thereafter, by repeating the above operation, the sheet blocks B are successively fed onto the feed conveyor 70, and when the last sheet s is fed, the underlay A is left on the plate 22 of the support member 20. For this reason, the underlay A can be easily removed.

  As described above, after the stack of stacked sheets S is lifted and separated into blocks by the separator device 30, the sheet block reversing device 40 is operated, and at the same time, the sheet block feeding device 60 is swung upward. In the stacked state, the upper surface in the stacked state is faced downward, or after dividing the blocks, the sheet block reversing device 40 is stopped and only the sheet block feeding device 60 is swung upward to Since the upper surface in the stacked state is left as it is, the stacked sheet S can be sent out with the upper surface in the stacked state as it is, or sent upside down.

  Further, by providing the separator device 30, the sheet block reversing device 40 and the sheet block feeding device 60 at the carry-out end portion of the sheet feeding device 10 supported by the tilting table 2, the upper surface of the stacked sheet S in the stacked state is provided. Since it can be sent out as it is, or can be sent upside down, a paper feeding device with a simple configuration can be obtained.

  As shown in the embodiment, by providing the sheet block transfer device 90 on the feed conveyor 70, the sheet block B can be supplied onto the carry-in end portion of the feed conveyor 70 without causing the sheet s to be disturbed. However, even when the sheet block delivery device 90 is omitted, the sheet block B can be reliably supplied onto the carry-in end portion of the feed conveyor 70, and thus the sheet block delivery device 90 can be omitted.

The front view which shows schematically the paper feeder concerning this invention Plan view of FIG. FIG. 2 is an enlarged plan view showing the sheet block delivery device of FIG. Sectional view along line IV-IV in FIG. Sectional drawing along the VV line of FIG. Sectional view along line VI-VI in FIG. Front view showing seat block reversing device Left side view of FIG. Sectional view along line IX-IX in FIG. Longitudinal front view of sheet block delivery device Plan view of FIG. Sectional view along line XII-XII in FIG. Sectional view of stacked sheets divided into blocks by separator device Sectional drawing which shows the state in the middle of overturning of the seat block divided into blocks Sectional view of the state where the seat block in the middle of lying down is supported by the sheet block feeding device Sectional view showing the seat block in a complete overturned state Sectional drawing which shows the state in the middle of overturning of the seat block which consists of a sheet | seat with a large width dimension FIG. 17 is a cross-sectional view of the sheet block shown in FIG. Sectional view of the state in which the divided sheet blocks are supported by the sheet block feeding device Sectional drawing which shows the state in which the sheet block received by the sheet block sending-out apparatus falls to the upstream side Sectional view showing the delivery state of the seat block

Explanation of symbols

S Stack sheet 2 Tilt table 10 Sheet feeding device 20 Support member 30 Separator device 40 Sheet block reversing device 60 Sheet block feeding device

Claims (1)

A tilting base that is swung between a substantially vertical position in a state of receiving a sheet and an inclined position in a state in which the upper end of the sheet falls to the downstream side to feed out the sheet;
A sheet feeding device supported by the tilting table so that the conveying surface of the sheet is in a substantially vertical state with the tilting table receiving a sheet;
The tilting table receives a stacked sheet that is fed substantially vertically and supports the stacked sheet with the sheet feeding device at the sheet feeding position of the tilting table, and the stacked sheet is brought to the unloading end with the sheet feeding device. A support member that is moved toward,
A separator device that divides the stacked sheets into blocks by lifting several sheets from the leading sheet onto the sheet conveying surface at the sheet feeding position of the tilting table;
A sheet block reversing device that presses the back upper part of the divided sheet block toward the carry-out end side of the sheet feeding device, and overturns the sheet block so that the upper surface in the stacked state faces downward,
The carry-in end facing the carry-out end of the sheet feeding device can be swung up and down around the carry-out end so that the block is divided when the sheet block reversing device is swung upward. Raise the seat block so that the upper end of the seat block is tilted to the upstream side, or when the seat block reversing device is activated, the seat block reversing device causes the top end to be tilted to the downstream side and stack. A sheet block sending device that discharges to the downstream side with the upper surface in the state as it is or the upper surface in the stacked state facing downward;
A paper feeder.

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