JP2006056608A - Sheet feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet feeding device capable of feeding stacked sheets of a small amount without disturbance, arbitrarily selecting the inversion of the sheet side, and feed even a plurality of kinds of stacked sheets which are mixed in face and back sides, or stacked in a pallet or the like by the auxiliary work and the driving operation of an operator. <P>SOLUTION: Carried-in stacked sheets S1 are supported by a sheet supporting stand 20 and an elevating/lowering stand 30, a turning stand 40 is turned, and the inclination of the sheet supporting stand is arbitrarily and selectively determined so as to be stopped in the uphill gradient or the downhill gradient. The carry-in side level of a receiving conveyor 60 is arbitrarily changed by expanding/contracting a cylinder 67, sheets to be carried out by a sheet guide plate 50 are supported and guided, the movement of the sheets stacked on the receiving conveyor 60 in the direction of the downhill inclination is prevented, and the sheets are fed thereby. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus for supplying a sheet (plate-like material), for example, a corrugated cardboard sheet, to a sheet feeding unit such as a corrugated board box making machine, and the like. It relates to the device.

  As an apparatus for supplying a loaded laminated sheet to a sheet processing machine such as a corrugated board box making machine, the apparatus shown in FIGS. 17 to 22 is known. In FIG. 17, the sheet supply device supports the front surface of the laminated sheet S1, and is rotatably supported by a sheet support base 91 having an upper portion divided in a comb shape and a support shaft 96 fixed to the upper end portion thereof. A plurality of folding support bases 95 that support the upper part of the front surface of the laminated sheet, a lift base 92 that can move to the upper end along the sheet support base 91, and a support shaft 94 that are rotatably supported by the sheet support base 91. The folding support base 95 and the rolling base 93 that supports the lifting base 93 and the downward inclination toward the sheet conveying direction do not interfere with the upper part of the comb-like sheet support base and the multiple rows of folding support bases 95. A sheet receiving conveyor 97 having a plurality of belts arranged at positions and conveying the laminated sheet S1 that has been rotated and conveyed; It is composed of a feed conveyor 98 for conveying the paper feed section of the box making machine.

  As shown in FIG. 17, in the sheet feeding apparatus having the above-described configuration, the support surface of the laminated sheet front part of the sheet support base 91 and the folding support base 95 is vertical, and the support part of the bottom surface of the laminated sheet of the lift base 92 is horizontal. In a state where the rolling table 93 is rotated to the position where the elevating table 52 is moved to the lowermost position, the laminated sheet S1 is moved to the position where the front surface of the laminated sheet S1 is folded and supported by the support table 95. Then, the elevator 92 is raised from the upper end of the support sheet 95 to the position indicated by the arrow in FIG.

  When the elevating table 92 rises and completely supports the bottom surface of the laminated sheet S1, the rolling table 93 starts rotating in the forward direction, and as shown in FIG. The sheet supported by 95 is rotated until it is supported by the sheet receiving conveyor 97.

  Immediately after the sheet is supported by the sheet receiving conveyor 97, the folding support base 95 rotates around the support shaft 96 in the direction of the arrow shown in FIG. 19, and the sheet receiving conveyor 97 starts the sheet feeding operation. The sheet is continuously conveyed to the supply conveyor 98 while the sheet is moved forward and reversed at the leading end, and at the same time, the lift 92 pushes out the sheet supported by the sheet support 91 at the same speed. FIG. 20 shows a state in which the lifting platform 92 pushes out all the sheets, and the folding support platform 95 rotates to the front rotation end and is completely folded.

When the receiving conveyor 97 feeds the sheet to a state where it does not interfere with the sheet even if the tip of the folding support base 95 shown in FIG. 20 rotates in the direction of the arrow about the support shaft 94, the rolling base 93 returns as indicated by the arrow. Rotate in the direction and return to the position to carry in the next laminated sheet shown in FIG.

In this example, the folding support base 95 rotates around the rotation support shaft 96, and the method of rotating the rolling base back without interfering with the sheet on the receiving conveyor 97 has been described. However, the rotation support shaft is linearly guided. A method of expanding and contracting in parallel with the sheet support surface of the sheet support table as a support shaft is also widely used.
JP 2002-36264 A

  In the conventional sheet supply apparatus described above, in order to continuously supply sheets, the sheet remaining on the sheet receiving conveyor 95 from the state shown in FIG. 20 until the next laminated sheet is conveyed to the state shown in FIG. You must continue to supply. In other words, the folding support base 95 needs a length that can support the remaining sheet amount commensurate with the supply capacity required for the sheet supply apparatus, and the corrugated board box making machine adjusts the production capacity depending on the sheet size, material, and the like. Although the supply capacity required for the sheet supply apparatus varies, the folding support base 95 needs to have a length corresponding to the maximum capacity.

For this reason, in the conventional sheet supply apparatus, as shown in FIG. 21, when the amount of the laminated sheet S6 carried in is small due to a small production amount or the like, even if the elevator 92 is moved to the upper limit, the maximum of the laminated sheet S6 is obtained. A large gap is formed between the upper surface and the supply conveyor 98, and the sheets near the uppermost surface of the laminated sheet S6 fall forward and fall on the sheet receiving conveyor 97 that is inclined downward in the conveying direction. There is a case where a twisted sheet cannot be conveyed and supplied in a normal state.

In order to adjust to the planned production number even when the production amount is large, the last laminated sheet often has a small amount of sheets, and as shown in FIG. 22, the last tail surface of the laminated sheet S7 transferred to the supply conveyor 98 and In addition, since a large gap is formed between the last loaded sheet S8 and the laminated sheet S8, the same problem as described above may occur. The smaller the sheet size, the more likely it is to be scattered.

  Depending on the convenience of the production process, there are cases where it is desired to supply the laminated sheet without changing the upper and lower surfaces of the laminated sheet. However, in the conventional sheet supply device, the upper surface at the time of loading can only be reversed and supplied.

  Corrugated sheets, such as corrugated sheets, are warped during the production process, but if the amount of warpage is large, problems may occur with corrugated board boxes, etc. It is preferable that a laminated sheet in which sheets and tables are alternately stacked or a plurality of laminated sheets stacked on a pallet or the like can be directly loaded.

  Since it is difficult to fully automate such a laminated sheet, it is desired to enable paper feeding by an auxiliary light work and driving operation by an operator. However, the above-described conventional apparatus requires a lot of labor and is practically used. I can't stand it.

  Therefore, the present invention eliminates the above-mentioned problems that occur when the amount of loaded laminated sheets is small, makes it possible to arbitrarily select the front and back of the sheets, and various laminating by the auxiliary light work and operation operations of the worker. An object of the present invention is to provide an apparatus capable of conveying and feeding sheets.

  To achieve the above object, the present invention provides a sheet support that supports the front side of a laminated sheet when it is carried in, a movable elevator that conveys the laminated sheet along the sheet support, and a sheet support. A rolling table that rotatably supports the seat support and the lifting platform with the middle part between the upper and lower ends of the sheet as a rotation center, and an arc shape having the same center point as the rotation center of the rolling table from the upper end of the seat support The sheet guide plate and the sheet supply apparatus provided with a receiving conveyor that conveys the sheet fed from the sheet support and has an upwardly inclined gradient in the conveying direction. The action is to prevent the sheet sent from the sheet support table from moving in the downward inclination direction along the inclination of the receiving conveyor, and within the rotational movement range of the upper end of the sheet support table. The sheet can be stably supplied regardless of the amount of the laminated sheet.

  The sheet receiving conveyor is provided with a rotatable support shaft at the tip of the sheet receiving conveyor in the unloading direction, the leading end of the conveyor on the loading side can be moved up and down, and the stacked sheets supported by the sheet support table are naturally overturned in the conveying direction. Slightly, the front end level of the sheet receiving conveyor is replaced with a structure that can be matched with the unloading level of the sheet support base, regardless of the rotational position of the rolling table just before or the rotational position where it naturally falls. The sheet can be supplied and conveyed by arbitrarily selecting whether the upper and lower surfaces of the laminated sheet loaded by the action are reversed or supplied without being reversed.

The above device is provided with an inching operation, start and stop switch, and a control device that enables it, for the lifting platform, rolling table and receiving conveyor. The effect is that sheets in various stacked states can be supplied by operating a switch attached by an operator and performing an auxiliary sheet transfer operation.

  The sheet feeding device according to the present invention feeds a sheet directly onto an upwardly inclined sheet receiving conveyor that does not cause a large slip even if it is forward-turned forward, and the leading edge of the sheet regardless of the rotation position of the rolling table. Can be supported and guided by the sheet guide plate, so that the sheets can be sent out while rotating the rolling table, and the reversed sheets can be stacked on the sheet receiving conveyor. Regardless of this, it is possible to supply the sheet stably without scattering or twisting of the sheet, and by adopting a structure that allows the transfer conveyor tip of the receiving conveyor to be moved up and down, it is possible to select the inversion of the upper and lower surfaces of the loaded laminated sheet as desired. It is possible to cope with various laminated sheets by the auxiliary work and operation of the worker.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. As shown in FIG. 1, the laminated sheet S <b> 1 is carried by the laminated sheet carry-in conveyor 10 to a position where the laminated sheet S <b> 1 comes into contact with the sheet support base 20 with the lifting / lowering base 30 being at the lower end position.

As shown in FIG. 2, the sheet support base 20 includes a pair of sheet support portions 21a disposed on the left and right outer sides, and a pair of left and right sheet support portions 21b disposed on the inner side.

  As shown in the partial cross-sectional view taken along the line A-A shown in FIGS. 1 and 1, the sheet support portion 21 a is a pair of left and right supported by the rolling cross member 42 a and the rolling cross member 42 b. The receiving plate support frame 23, a sheet receiving plate 22a supported by the receiving plate 22a and supporting the front side of the laminated sheet S1, a lifting rail 24, and sprockets 25a and 25b rotatably supported by upper and lower ends.

  As shown in the partial cross-sectional view taken along the line AA shown in FIGS. 1 and 1, the sheet support portion 21b is supported by the rolling joint member 42a and the rolling joint member 42b. It is comprised by the prism 26 and the sheet | seat receiving plate 27 supported by it and supporting the front side of laminated sheet S1.

  As shown in FIGS. 1 to 3, the lifting platform 30 has an arm support member 32 having a length substantially commensurate with the width of the laminated sheet to be loaded, and a plurality of rows of support arms 31 in a position not interfering with the laminated sheet carrying conveyor. Fix the teeth and support the bottom of the laminated sheet.

  The arm support member 32 is fixed to an elevating frame 33 supported by a cam follower 32 so as to be movable up and down on an elevating rail 24 fixed to a pair of seat support portions 21 a arranged on the left and right outer sides.

  As shown in FIGS. 1 to 3 and 5, the elevating frame 33 has a lifting member 34 for connecting a chain 35, and the chain 35 is fixed to a sprocket 25 a fixed to the upper portion of the seat support portion 21 a and an intermediate portion thereof. The sprocket 25c fixed to the lift, the sprocket 47a fixed to the lift drive shaft 45, and the lift sprocket 25b fixed to the lower part of the seat support portion 21a, and both ends are connected to and supported by the lifting material 34. .

  As shown in FIGS. 2 and 5, the pair of left and right sprockets 47a are fixed to an elevating drive shaft 45 rotatably supported on a rolling table 40 by bearings 46a and 46b at both ends. The sprocket 47b fixed to the part and the sprocket 47c attached to the motor M1 are connected by a chain 44, and the elevating drive shaft 45 is rotated by the motor M1, whereby the elevating table 30 is received on the front side of the laminated sheet of the sheet support table. , And a structure capable of moving to the upper end of the sheet support base 20.

  As shown in FIGS. 1 and 2, the rolling table 40 has the rolling side plates 41 arranged on the left and right sides fixed at the upper part by the transverse member 42a, at the lower part by the transverse member 42b, and at the intermediate part by the transverse member 42c. Connected to form a frame body, bearings 48 are provided on both outer surfaces of the rolling side plate 41, and are rotatably supported on the main body frame 80 by a pair of left and right support shafts 82 fixed at positions where the axis centers are aligned. ing.

  An arc-shaped wheel 43 centering on the axis of the support shaft 82 is provided on the rolling table at an intermediate portion of the left and right rolling side plates 41, and both end surfaces thereof are fixedly supported by the transverse members 42a and 42b. The inner surface of the part is fixedly supported by the transverse member 42c.

Both ends of the chain 83 are connected to connecting members 49a and 49b fixed to both ends of the wheel 43, and are guided along the outer surface of the wheel 43 by sprockets 81a and 81b rotatably supported by the main body frame 80. The chain 83 is stretched over the sprocket 81c fixed to the motor M2, and the rolling table 40 is rotated by rotating the motor M2.

  Further, a plurality of rows of sheet guide plates 50 made of arc-shaped plates having the same center as the rotation center of the rolling table 40 are supported at one end by a support plate 51, and the support plate 51 is a rolling transition material. The other end is supported by the upper end of the sheet support base 21a or 21b.

  The receiving conveyor 60 includes a drive pulley shaft 61 having a plurality of head pulleys 63, as shown in a cross-sectional view taken along the line BB shown in FIG. A pair of side plates 72 fixedly supported on the left and right ends of the base substrate 71 are rotatably supported at the front end portions in the conveyance direction, and both ends of the drive pulley shaft 61 are rotatably supported by bearings 66. A belt frame 73 having a shape is fixed to the side plate 72, and a rectangular pipe-shaped belt frame 76 provided on the inner side thereof is connected and fixed by a joint member 75, and it is formed in a prismatic shape provided between the belt frames 74 and 75. The belt support member 74 is fixed to the base substrate 71 with a frame support member 74, and a pulley support member 77 is attached in a comb-like shape relative to the head pulley 63 of each belt frame 73, 76. A shaft 62 is provided, the tail pulley 64 is rotatably supported, a belt 65 is stretched between the head pulley 63 and the tail pulley 64, and a chain 69 is connected to a sprocket 68a fixed to the drive pulley shaft 61 and a sprocket 68b fixed to the motor M3. The belt 65 is moved by rotating the motor M3, the cylinder coupling member 78 is attached to the base substrate 71, supported by the cylinder 67, and the cylinder 67 is expanded and contracted to expand and contract the belt 65. The surface can be moved up and down.

In the above configuration, when the laminated sheet S1 is carried into the position shown in FIG. 1, the elevator 30 starts to rise, and the upper surface of the laminated sheet S1 is conveyed to a position slightly above the upper end of the sheet support base 20. Stop.

When the lower surface of the arm support member 32 constituting the lifting platform 30 exceeds the upper surface of the laminated sheet carry-in conveyor 10, the rolling table 40 starts rotating, and the sheet support surface of the sheet support table 20 descends in the sheet conveying direction. Rotate to the position of the front rotation end that becomes inclined and stop. FIG. 8 shows this state.

When the rolling table 40 is stopped, the sheet at the leading end of the laminated sheet S1 shown in FIG. 8 reverses the sheet surface and falls onto the receiving conveyor 60. The receiving conveyor 60 starts conveying the sheet almost simultaneously, and the lifting table 30 At the same time, extrusion of the laminated sheet S1 is started, and the laminated sheet S1 is received and stacked on the conveyor 60 while rotating the rolling table 40 in the return direction accordingly, and the next laminated sheet is transferred to the state shown in FIG. When the amount that can be continuously supplied by the receiving conveyor 60 is accumulated, the return rotation of the rolling table 40 is stopped, and the lifting table 30 pushes out the same amount as the amount of the sheet sent out by the receiving conveyor 60. All the laminated sheets S1 are received and sent out to the conveyor 60. FIG. 9 shows a state in which the sheets are received and the necessary amount has been stacked on the conveyor 60, and the rolling table has returned and stopped rotating.

  When the elevator 30 moves to the tip position of the sheet support 20 indicated by the arrow in FIG. 9 and the feeding of the laminated sheet S1 is completed, the elevator 30 and the rolling table 40 return toward the position shown in FIG. 10 is started, and after the return operation shown in FIG. 10 is completed, the next laminated sheet is carried in, and while the next laminated sheet is transferred to the state shown in FIG. Since the required amount of sheets are stacked, the sheets can be continuously supplied.

  Since the receiving conveyor 60 is supported by contracting the cylinder 67 so as to have a sufficient upward inclination in the sheet conveying direction, the laminated sheet S1 supported by the sheet support 20 shown in FIGS. 8 and 9 described above. When it falls forward with its lower edge as a support, it is stably reversed without being disturbed and falls to the receiving conveyor 60 and falls.

  The sheet supported by the receiving conveyor 60 at any position within the range in which the rolling table 40 reciprocally rotates between the laminated sheet loading position shown in FIG. 10 and the position of the front rotation end shown in FIG. However, the sheet guide plate 50 can prevent the sheet guide plate 50 from shifting in the direction opposite to the supply direction along the inclination of the conveyor.

  The relative movement speed of the lifting platform 30 and the rolling platform 40 from the state shown in FIG. 1 to FIG. 8 is set so that when the lifting platform 40 is rotated to the front rotation end shown in FIG. Therefore, even when a small amount of laminated sheets are carried in, the sheets can be reversed and transferred onto the receiving conveyor 60 without falling over the sheet support table 20. it can.

  Of course, the method of starting the rotation of the rolling table 40 after completion of the laminated sheet transfer operation of the elevator 30 and the rotation of the rolling table 40 are stopped halfway, and the completion of the operation of transferring the laminated sheet of the elevator 30 A method in which the rolling table 40 starts to rotate again is also possible.

  Although the method of supplying the laminated sheet surface that has been carried in is turned upside down, the method of supplying the laminated sheet surface without turning over will be described with reference to FIGS. 11, the cylinder 67 is extended from the state shown in FIG. 1, and the receiving conveyor 60 is flipped up in the direction indicated by the arrow with the drive pulley shaft 61 as the center of rotation, and the lift 30 is placed on the upper surface of the laminated sheet S2 on the sheet support base 20. The state is shown in which the sheet is transferred to the leading end, and the rolling table 40 is rotated to a position where the sheet support surface of the sheet support table 20 leaves a slight upward inclination in the conveying direction.

  In this state, the moving speed of the lift 30 and the belt moving speed of the receiving conveyor 60 are set to the same speed, and an appropriate amount of the laminated sheet S1 is transferred to the receiving conveyor 60. FIG. 12 shows a state where an appropriate amount of sheets indicated by hatching has been received and transferred to the conveyor 60 and the elevator 30 has stopped.

  The belt of the receiving conveyor 60 is moved from the state shown in FIG. 12, and is moved so as to pull out the bottom edge of the transferred sheet as shown in FIG. be able to. FIG. 14 shows a state immediately after the drawing is completed and immediately before the sheet is supplied downstream.

  The operation described with reference to FIGS. 12 to 14 can be repeated, and the sheet can be supplied without changing the sheet surface of the loaded laminated sheet S2.

  In the first and second embodiments, an example in which paper feeding is performed in an automatic operation that does not require human power is shown. However, inching operation of motors M1, M2, and M3, start and stop switches, and a control device are provided to assist an operator. An example will be described in which sheets in various stacked states are carried in and supplied through various sheet transfer operations and operation operations.

  FIG. 15 shows that when the laminated sheet S3 mixed in the front and back is loaded and the state of FIG. 11 described in the second embodiment is reached to FIG. The conveyor 60 is operated, only the sheets on the same surface are transferred to the receiving conveyor 60, and the elevator 30 and the receiving conveyor 60 are stopped. The hatched sheet and the non-hatched sheet are opposite to each other. Is displayed.

  In the state shown in FIG. 15, when the paper is to be turned upside down, the worker manually flips the sheet in the direction of the arrow, and then starts the receiving conveyor 60 to feed the sheet without turning the sheet upside down. In the same manner as in the second embodiment, the sheet is fed by operating the receiving conveyor 60 without inverting and overturning the sheet.

  By repeating the above operation, it is possible to supply the sheet by unifying the laminated sheet S3 mixed in the front and back to an arbitrary sheet surface.

  When a plurality of laminated sheets loaded on a pallet or the like are carried in, paper cannot be fed by the method described in the first to third embodiments. As in the third embodiment, an example in which paper is fed by an operator's auxiliary transfer operation and driving operation will be described with reference to FIG.

  A plurality of laminated sheets S4 and S5 stacked on the pallet 90 are loaded, the elevator 30 is raised, and the upper surface of the laminated sheets S4 and S5 is transferred to a position slightly above the upper end of the sheet support 20, and the elevator 30 After the stop, the transfer operation is facilitated by the inching operation of the worker, and the rolling table 40 is rotated to an angle at which the laminated sheet S5 does not slip and enter the laminated sheet S4. An appropriate amount of the sheet is slid along the sheet guide plate 50 in the direction indicated by the arrow from the upper side, and the sheet surface is turned over to the receiving conveyor 60, and the sheet surface is reversed and transferred.

  After an appropriate amount of the laminated sheet S4 is received and transferred to the conveyor 60 in the same operation as the laminated sheet S5, the elevator 30 is raised by the operator's switch operation, and the same operation and operation as described above are repeated. After loading the sheets, the worker starts the continuous operation of the conveyor. FIG. 16 shows this state.

  The laminated sheet is moved up and transferred to the receiving conveyor 60 by human power. After all the laminated sheets S4 and S5 have been transferred, the rolling table 40 is returned and rotated, and the lifting table 30 is moved to the descending end and emptied. The pallet 90 is removed. A plurality of laminated sheets stacked on a pallet or the like can be fed by the method described above.

1 is a side view showing the best mode for carrying out a sheet feeding apparatus according to the present invention. Plan view of FIG. FIG. 21 is a cross-sectional view of FIG. 2 taken along line AA in FIG. 21 is a cross-sectional view of FIG. 2 taken along line AA in FIG. Front view of elevator platform drive BB arrow view of FIG. CC arrow view of FIG. Explanatory drawing of Example 1 Explanatory drawing of Example 1 Explanatory drawing of Example 1 Explanatory drawing of Example 2. Explanatory drawing of Example 2. Explanatory drawing of Example 2. Explanatory drawing of Example 2. Explanatory drawing of Example 3 Explanatory drawing of Example 4 Explanatory drawing of a conventional sheet feeding device Explanatory drawing of a conventional sheet feeding device Explanatory drawing of a conventional sheet feeding device Explanatory drawing of a conventional sheet feeding device Explanatory drawing of a conventional sheet feeding device Explanatory drawing of a conventional sheet feeding device

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Laminated sheet carrying conveyor 20 Sheet support stand 21a Sheet support part 21b Sheet support part 22a Sheet support plate 22b Sheet support plate 23 Receptacle support frame 24 Lift rail 25a Sprocket 25b Sprocket 25c Sprocket 26 Receptacle support prism 30 Lift base 31 Support arm 32 Arm support material 33 Lifting frame 34 Lifting material 35 Chain 36 Cam follower 40 Rolling table 41 Rolling side plate 42a Rolling joint material 42b Rolling joint material 42c Rolling joint material 43 Wheel 44 Chain 45 Lifting drive shaft 46 Lifting bearing 47a Sprocket 47b Sprocket 47c Sprocket 48 Rolling bearing 49a Connecting material 49b Connecting material 50 Sheet guide plate 51 Support plate 60 Receiving conveyor 61 Drive pulley shaft 62 Tail pulley shaft 63 Head pulley 64 Tail pulley 65 Belt 66 shaft Receptacle 67 Cylinder 68a Sprocket 68b Sprocket 69 Chain 71 Base substrate 72 Side plate 73 Belt frame 74 Frame support material 75 Frame joint material 76 Belt frame 77 Pulley support material 78 Cylinder coupling material 80 Main body frame 81a Sprocket 81b Sprocket 81c Sprocket 82 Support shaft 83 Chain 91 Sheet support table 92 Lift table 93 Rolling table 94 Support shaft 95 Folding support table 96 Support shaft 97 Sheet receiving conveyor 98 Feed conveyor M1 Motor M2 Motor M Pallet S1 Laminated sheet S2 Laminated sheet S3 Laminated sheet S4 Laminated sheet S5 Laminated sheet S6 Laminated sheet S7 Laminated sheet S8 Laminated sheet

Claims (3)

  A sheet support that supports the front side of the laminated sheet when it is carried in, a movable elevator that conveys the laminated sheet along the sheet support, and a sheet that is centered on the center between the upper and lower ends of the sheet support. A rolling table that rotatably supports the support table and the lifting table, an arcuate sheet guide plate having the same center point as the rotation center of the rolling table from the upper end of the sheet support table, and an upwardly inclined in the conveying direction A sheet feeding apparatus provided with a receiving conveyor that has a gradient and conveys a sheet fed from a sheet support.   The sheet receiving conveyor according to claim 1, wherein a rotating support shaft is provided at the leading end of the sheet receiving conveyor in the unloading direction, the leading end of the conveyor on the loading side is movable up and down, and the laminated sheet supported by the sheet support base is in the transporting direction. In addition, the structure is such that the leading edge level of the sheet receiving conveyor can be matched to the unloading level of the sheet support pedestal, regardless of whether it is in the rotational position of the rolling table just before the natural fall or the rotational position where it naturally falls. The sheet feeding apparatus according to claim 1. The sheet feeding apparatus according to claim 1 or 2, further comprising a switch for inching operation, starting and stopping, and a control device that enables the inching operation, starting and stopping of the lifting platform, rolling table and receiving conveyor.

Images