JP5801644B2 - Sheet ejector - Google Patents

Description

  The present invention relates to a sheet discharge apparatus that is provided in an apparatus for handling sheets such as a sheet-fed printing machine and stacks discharged sheets on a stacking plate.

  In general, in a printing operation using a sheet-fed printing machine, after printing, a sheet conveyed by nail supported by a traveling paper discharge chain is released from the nail nail and dropped and stacked on a stacking plate. . In such a discharge operation, there are a discharge method in which a large number of sheets are stacked on one stacking plate, and a method in which sheets are stacked in small numbers on a plurality of stacking plates. Further, a small amount of sheets are stacked on a plurality of stacking plates. This is done by placing pillars called corners on the four corners of the stack of sheets on which sheets are stacked, placing the stack on top of the corners, and stacking the stack, and endlessly at the outer four corners of the stack. The chain is arranged to run in the vertical direction, and the loading plate is supported on these four endless chains. When a predetermined amount of sheets are loaded, the endless chain is moved so that the loading plate descends, and the sheets are loaded. There is a method of stacking sheets by supporting a new stacking plate above the stacking plate. In particular, a discharge device that loads a small amount of sheets on a plurality of stacking plates using an endless chain is referred to as “circulation type”, and will be described below by exemplifying a circulation type discharge device.

  The circulation type discharge device will be described in detail. The four endless chains arranged at the four outer corners of the stacking plate run in synchronization with each other. Are attached in the running direction of a pair of left and right endless chains at equal intervals, and a pair of front and rear guide rails as viewed in the sheet conveying direction by the claws. It supports the loading board called. The circulation type discharging device configured as described above, when a predetermined amount of sheets are stacked on a stacking plate supported by a pair of front and rear guide rails, the four endless chains are synchronously driven to lower the stacking plate, When the guide rail above the guide rail supporting the loading plate is positioned at a predetermined position, the travel of the endless chain is stopped, and the loading plate is inserted into the pair of front and rear guide rails positioned at the predetermined position from the side of the discharge device. Then, the sheets are stacked on the new stacking plate. This operation of inserting a new stacking plate is repeated for each guide rail pitch to stack sheets in a plurality of stages (see Patent Document 1).

  In addition, as such a sheet discharge device, for example, there is one in which, for example, three paper stacks are arranged in the paper transport direction. That is, the first to third piles are provided, and the first pile and the second pile, which are two piles on the upstream side in the paper conveyance direction, are used for regular paper, and the regular paper is discharged alternately on these stacking plates. And the third pile on the most downstream side in the paper transport direction is used for sample paper and waste paper, and the sample paper and waste paper are discharged onto the stacking plate and the first pile and It is loaded with a smaller number of stages than the second pile (see Patent Document 2).

JP-A-64-81762 JP 2000-127349 A International Publication No. 2004/078626 Pamphlet Japanese Utility Model Publication No. 63-81071 JP 63-101273 A

  By the way, in such a sheet discharge apparatus, it is dangerous if an operator enters the access area of the first to third piles, for example, under the operation of the discharge chain (printing machine). When detected, the driving device (printing machine) is stopped, while the operation of the detector in the predetermined access area is canceled and the driving device (printing machine) is stopped under a certain condition accompanied by a predetermined switch operation by the operator. Patent Document 3 discloses a safety device that allows an operator to perform a desired operation such as removal and insertion of a loading plate within a predetermined access area.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet discharging apparatus that can effectively improve safety when an intrusion detector is invalidated to enable continuous operation.

The sheet discharging apparatus for solving the above problems is as follows:
A sheet conveying device for conveying a sheet;
A pile having multi-stage stacking plates for stacking sheets discharged from the sheet conveying device;
An intrusion detector for detecting intrusion into the pile and stopping the sheet conveying device;
In a sheet discharge device comprising:
A sheet stacking position detector for detecting that the stacking plate is positioned at a sheet stacking position;
A control device that invalidates the stop of the sheet conveying device by detection of the intrusion detector based on a detection signal of the sheet stacking position detector;
And providing
The sheet stacking position of the stacking plate is a plate upper limit position that is the ascending limit of the stacking plate, and the lower surface of the sheet conveyance area is shielded by the stacking plate .

Also,
An L-shaped cover is provided adjacent to the stacking plate positioned at the sheet stacking position, and the cover has a vertical plate portion between the sheet discharge chain traveling area above the pile and the sheet stacking position. While the side surface of the conveyance region is shielded, the horizontal plate portion is flush with the stacking plate at the sheet stacking position and shields the lower surface of the sheet conveyance region together with the stacking plate .
Also,
A safety bar that can be opened and closed is provided on the side of the sheet conveying area to shield the side of the sheet conveying area except when the stacking plate is taken out.

  According to the above-described sheet discharge device according to the present invention, the stacking plate positioned at the sheet stacking position can prevent the operator from entering the sheet conveyance region, so the intrusion detector is invalidated and the continuous operation is performed. The safety at the time of making it possible can be improved effectively.

It is a schematic block diagram of the intaglio printing machine which shows one Example of this invention. It is explanatory drawing of the stack paper taking-out apparatus and stacking board insertion apparatus in a paper discharge apparatus. It is explanatory drawing of a safety bar and a loaded paper take-out device. It is a schematic explanatory drawing of the discharge method. It is a control block diagram of a discharge device. It is process drawing at the time of automatic control of a discharge device. It is process drawing at the time of automatic control of a discharge device. It is process drawing at the time of automatic control of a discharge device. It is process drawing at the time of automatic control of a discharge device. It is process drawing at the time of automatic control of a discharge device. It is an operation | movement flowchart at the time of manual control of a discharge device. It is an operation | movement flowchart at the time of manual control of a discharge device. It is an operation | movement flowchart at the time of manual control of a discharge device.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a sheet discharging apparatus according to the present invention will be described in detail with reference to the drawings using embodiments.

  FIG. 1 is a schematic configuration diagram of an intaglio printing press showing an embodiment of the present invention, FIG. 2 is an explanatory diagram of a stack paper take-out device and a stack plate insertion device in a paper discharge device, and FIG. 3 shows a safety bar and a stack paper take-out device. FIG. 4 is a schematic explanatory diagram of the discharge method, FIG. 5 is a control block diagram of the discharge device, FIG. 6 is a process diagram during automatic control of the discharge device, and FIG. 7 is a process diagram during automatic control of the discharge device. 8 is a process diagram during automatic control of the discharge device, FIG. 9 is a process diagram during automatic control of the discharge device, FIG. 10 is a process diagram during automatic control of the discharge device, and FIG. 11 is an operation flow during manual control of the discharge device. FIG. 12 is an operation flow diagram during manual control of the discharge device, and FIG. 13 is an operation flow diagram during manual control of the discharge device.

  As shown in FIG. 1, the paper feeding device 10 loaded with paper (sheets) W receives the paper W sent from the upper layer one by one by the sucker mechanism of the paper feeding device 10 and adjusts the printing register. Board 11 is in contact. The difference plate 11 is provided with a swing device 12 that swings in addition to the paper W on the difference plate 11.

  The swing device 12 is provided with a so-called triple cylinder impression cylinder 14 via a transfer cylinder 13 in which three gripping claws are arranged at equal intervals along the circumferential direction and three rubber blankets can be attached. The impression cylinder 14 is supported by a frame 23. The transfer cylinder 13 is provided with a gripping claw similar to the gripping claw of the impression cylinder 14 so that the paper 100 that has been replaced by the swing device 12 can be replaced by the gripping claw of the impression cylinder 14. It has become.

  The impression cylinder 14 is in contact with a so-called triple cylinder 15 which can attach three intaglios along the circumferential direction, and the plate cylinder 15 is supported by a frame 23. The intaglio plate of the plate cylinder 15 is in contact with a so-called quadruple-color ink collecting cylinder 16 to which four rubber blankets can be attached along the circumferential direction. It is supported. The ink collecting cylinder 16 has five so-called single cylinder chablon cylinders 17 in contact with each other in the circumferential direction, each having a circumferential surface length corresponding to the length of the blanket of the impression cylinder 14 and the intaglio of the plate cylinder 15. The chablon cylinder 17 is supported by the frame 24. Each of these chablon cylinders 17 is in contact with an ink device 18 that supplies ink, and the ink device 18 is supported by a frame 25. The ink devices 18 are filled with inks of different colors.

  In other words, the ink collecting cylinder 16 is a quadruple cylinder, and five chablon cylinders 17 and five ink devices 18 are arranged, and the ink collecting cylinder 16 and the chablon cylinder 17 are supported by independent frames 24, so that a large ink collecting cylinder is provided. Even 16 could be fully supported.

  A wiping roller 19 is in contact with the intaglio of the plate cylinder 15. The wiping roller 19 is immersed in a wiping tank 20 that stores a cleaning liquid.

  Further, a discharge cylinder 21 is in contact with the impression cylinder 14. A sprocket (not shown) of a paper discharge device (sheet conveyance device) 22 is coaxially provided on the paper discharge cylinder 21. A pair of paper discharge chains 22b is stretched between the sprocket and sprocket 22a of the paper discharge device 22. The paper discharge chain 22b is provided with a paper discharge claw (not shown). First to third piles 26a to 26c as sheet discharge devices are arranged in parallel in the paper transport direction on the downstream side in the running direction of the paper discharge chain 22b.

  The first and second piles 26a and 26b at the front and middle stages are used for normal paper, and the normal paper is alternately discharged onto these stacking plates 27a and 27b and stacked in a plurality of stages (for example, 10 stages). The third pile 26c at the rear stage is used for sample paper or scraped paper, and the sample paper or scraped paper is discharged onto the stacking plate 34 and stacked in a plurality of stages (for example, five stages).

  On the other hand, a window 24a is formed on the frame 24 side of the frame 24 so that an operator can enter and exit from the window 24a.

  In such an intaglio printing machine, the paper W fed one by one from the paper feeding device 10 onto the differential plate 11 is transferred from the swing device 12 through the transfer cylinder 13 to the gripping claw of the impression cylinder 14 and conveyed. On the other hand, the ink of each ink device 18 is transferred to the ink collecting cylinder 16 via the chablon cylinder 17 and supplied onto the intaglio surface of the plate cylinder 15, and the excess ink is removed by the wiping roller 19. Then, when the paper W passes between the impression cylinder 14 and the intaglio cylinder 15, the ink is transferred to the paper W and printed, and the paper W passes through the paper discharge cylinder 21 to be discharged from the paper discharge device 22. The paper is conveyed by the paper discharge chain 22b and is selectively discharged to the first to third piles 26a to 26c.

  In the present embodiment, as shown in FIG. 2, the first beam sensor 62a (62b) as the safety device, the second beam is provided in the access area of the first pile 26a and the second pile 26b in the paper discharge device 22. A sensor 63a (63b), a third beam sensor 64a (64b), and a safety bar 66a (66b) are provided and supported by the frame of the paper discharge device 22 as appropriate. In the illustrated example, an example of the access area is an opening on the working side of the first pile 26a and the second pile 26b in which a later-described stacked paper take-out device 70 advances and retreats. A safety device may also be provided in the opening on the drive side of the first pile 26a and the second pile 26b into which 27a (27b) is inserted and the opening on the rear surface side of the first pile 26a for maintenance or the like. It goes without saying that it is good. Of course, a safety device may be provided in the access area of the third pile 26c.

  The first beam sensor 62a (62b), the second beam sensor 63a (63b), and the third beam sensor 64a (64b) are provided at a predetermined interval in the vertical direction, and the operator (and the operation of the stacked paper take-out device 70, etc.). When an intrusion detector detects an intrusion, for example, a light projection / reception type intrusion detector that detects intrusion into the access area (pile) of the device), the driving of the motor 51 (see FIG. 5) is stopped, that is, the paper discharge chain 22b is stopped. In addition, even if intrusion is detected by the first beam sensor 62a (62b), the second beam sensor 63a (63b), and the third beam sensor 64a (64b) under certain conditions described later, the motor 51 is not stopped. It is also like.

  The safety bar 66a (66b) is an upper space (sheet conveyance region) between the paper discharge chain 22b of the paper discharge device 22 and the stacking plate 27a (27b) positioned at the top of the first pile 26a and the second pile 26b. When the safety bar 66a (66b) is manually opened (raised), this is detected by the safety bar opening / closing sensors 61a and 61b (see FIG. 5). Pile lifting / lowering motors 53a and 53b (see FIG. 5) for moving up and down the stacking plate 27a (27b) by running an endless chain (not shown but see the endless chain running line L3 in FIG. 2) in the first pile 26a and the second pile 26b. The drive is stopped. In FIG. 2, 67a (67b) is a cover having an L-shaped cross section, and the horizontal plate portion faces the stacking plate 27a (27b) at the plate upper limit position (sheet stacking position) L2 (see FIG. 3) described later. By becoming one, the lower surface and the side surface of the above-described upper space are more largely shielded to avoid interference with other objects.

  In the loading paper take-out device 70, a fork member 70c is supported in a comb shape over a plurality of stages (10 stages in the illustrated example) on a lifting frame 70b supported so as to be lifted and lowered on a carriage 70a. After entering the first pile 26a and the second pile 26b in the lowered state, the elevating frame 70b is then slightly lifted so that the stacking plate 27a (27b) is 10 from the endless chain side of the first pile 26a and the second pile 26b. It is transferred to the fork member 70c supported by the elevating frame 70b, and the carriage 70a moves back out of the first pile 26a and the second pile 26b in this state, so that the loading plates 27a (27b) for 10 stages are moved. Extraction (mounting out) is possible. The loaded paper take-out device 70 is well known in Japanese Patent Application Laid-Open No. H10-228707 and will not be described in detail.

  The stacking plate inserting device 71 stacks the stacking plates 27a (27b) stacked on the carriage 71a one by one up to the height of the plate insertion position L1 (see FIG. 3) of the first pile 26a and the second pile 26b with the lifter 71b. After lifting, the stacker 27a (27b) is transferred to the endless chain side of the first pile 26a and the second pile 26b by being pushed out into the first pile 26a and the second pile 26b by the pusher 71c. Since this stacking plate insertion device 71 is known from Patent Document 5 and the like, detailed description thereof is omitted.

  As shown in FIG. 3, plate insertion position detection sensors 57a and 57b (see FIG. 5) are provided at the plate insertion position L1, which is the insertion position of the loading plate 27a (27b), and the loading plate 27a (27b). A plate upper limit position detection sensor (sheet stacking position detector) 58a, 58b (see FIG. 5) is provided at the plate upper limit position L2, which is the upper limit of the upper limit. Further, the set number (set amount) of the paper W stacked on the stacking plate 27a (27b) is measured by the counter 52 (see FIG. 5).

  Therefore, in the first pile 26a and the second pile 26b, as shown in FIG. 4, the safety bar 66a (66b) is inserted into the pile at the plate insertion position L1 under the closed (lowered) state. When the number of sheets W discharged on the tenth stacking plate 27a (27b) raised to the rear plate upper limit position L2 reaches the set number of sheets, the discharge of ten steps is completed and the pile is lowered. (Refer to FIG. 4A).

  Next, the pile is lowered by running the endless chain, and the first stage stacking board 27a (27b) of the next 10 stages is inserted into the 12th stage (the plate support member) at the plate insertion position L1. In other words, the loading plate 27a (27b) is not inserted into the eleventh stage (the plate support member) (see FIG. 4B).

  Next, the pile is raised by running the endless chain so that the 12th stage stacking plate 27a (27b) is positioned at the plate upper limit position L2 and the paper W can be discharged, while the safety bar 66a (66b) is By opening (raising) the stacked paper take-out device 70 (cart 71a) into the pile, it is possible to take out (stack out) 10 stacked stack plates 27a (27b) (FIG. 4). (See (c)).

  Such an operation is alternately performed between the first pile 26a and the second pile 26b. However, in this embodiment, both automatic control (operation) and manual control (operation) can be performed. .

  That is, as shown in FIG. 5, a detection signal from a counter 52 is input to the control device 50 described above, and manual operation switches 54a of a first pile 26a and a second pile 26b provided on an operation panel (not shown). 54b, pile lowering switches 55a and 55b, pile raising switches 56a and 56b, plate insertion switches 59a and 59b, and pile changeover switches 60a and 60b.

  Similarly, the control device 50 detects the first pile 26a and the second pile 26b from the plate insertion position detection sensors 57a and 57b, the plate upper limit position detection sensors 58a and 58b, and the paper surface height detection sensors 65a and 65b. In addition to the signals, detection signals from the safety bar opening / closing sensors 61a and 61b, the first beam sensors 62a and 62b, the second beam sensors 63a and 63b, and the third beam sensors 64a and 64b are input.

  The control device 50 controls the driving of the machine motor 51 on the basis of various input signals to be described later, and controls the driving of the pile lifting motors 53a and 53b of the first pile 26a and the second pile 26b. .

  Then, the automatic control (operation) is performed according to the process chart for automatic control shown in FIGS.

  First, in step (a), when it is measured by the counter 52 that a set number (set amount) of paper W has been discharged (stacked) onto the first stacking plate 27a of the first pile 26a, the second pile is measured. Pile switching is performed so that the paper W is discharged to 26b.

  Next, in the step (b), while the paper W is being discharged onto the first stacking plate 27b of the second pile 26b, the first pile 26a is lowered by the pile lifting motor 53a, and the first pile 26a. The second stage (plate support member) is positioned at the plate insertion position L1 by the plate insertion position detection sensor 57a.

  Next, in step (c), the stacking plate 27a is inserted into the second stage (the plate support member) of the first pile 26a by the stacking plate inserting device 71.

  Next, in the step (d), the first pile 26a is raised by the pile lifting motor 53a, and the second stack plate 27a of the first pile 26a is moved to the plate upper limit position (paper stacking position) by the plate upper limit position detection sensor 58a. Is positioned. When the counter 52 measures that the set number (set amount) of paper W has been discharged (stacked) on the first stacking plate 27b of the second pile 26b, the paper W is discharged to the first pile 26a. Pile switching is performed.

  Next, in step (e), the second pile 26b is lowered by the pile lifting motor 53b, and the second stage (the plate support member) of the second pile 26b is positioned at the plate insertion position L1 by the plate insertion position detection sensor 57b. Is done.

  Next, in step (f), the stacking plate 27a is inserted into the second stage (the plate support member) of the second pile 26b by the stacking plate inserting device 71.

  Next, in step (g), the pile pile motor 53a raises the second pile 26b, and the counter 52 discharges a set number (set amount) of paper W onto the second stack plate 27b of the second pile 26b ( When it is measured that the paper is stacked, pile switching is performed so that the paper W is discharged to the first pile 26a.

  The above operation is alternately performed between the first pile 26a and the second pile 26b, and the paper W is loaded on the third to ninth stack plates 27a and 27b of the first pile 26a and the second pile 26b. Is done.

  Next, in step (h), the paper W is discharged onto the 10th stacking plate 27a of the first pile 26a.

  Next, in step (i), when it is measured by the counter 52 that the set number (set amount) of paper W has been discharged (stacked) on the tenth stacking plate 27a of the first pile 26a, Pile switching is performed so that the paper W is discharged to the pile 26b. Then, a process of taking out (mounting out) 10 stacked loading plates 27a in the first pile 26a is performed.

  That is, in the step (j), while the paper W is being discharged to the second pile 26b, the first pile 26a is lowered by the pile lifting motor 53a, and two of the tenth stacking plates 27a on which the paper W is stacked. The upper twelfth stage (the plate support member) is positioned at the plate insertion position L1 by the plate insertion position detection sensor 57a.

  Next, in step (k), the stacking plate 27a is inserted into the twelfth stage (the plate supporting member) of the first pile 26a by the stacking plate inserting device 71. That is, the stacking plate 27a is not inserted into the eleventh stage (the plate support member).

  Next, in step (l), the first pile 26a is raised by the pile lifting motor 53a, and the 12th stage stacking plate 27a of the first pile 26a is positioned at the plate upper limit position by the plate upper limit position detection sensor 58a.

  Next, in step (m), the loaded paper take-out device 70 (cart 70a) advances and retreats with respect to the first pile 26a, and the loaded 10-stage loaded plates 27a (27b) are taken out of the pile (mounting out). Is done. When the counter 52 measures that the set number (set amount) of paper W has been discharged (stacked) onto the tenth stack plate 27b of the second pile 26b, the paper W is discharged to the first pile 26a. Pile switching is performed.

  Next, in the step (n), while the paper W is being discharged to the first pile 26a, the second pile 26b is lowered by the pile lifting / lowering motor 53b, which is the same as the step (j) in the first pile 26a. It is also implemented in the pile 26b.

  Next, in step (o), the stacking plate 27b is inserted into the twelfth stage (the plate support member) of the second pile 26b by the stacking plate inserting device 71, and the same as step (k) in the first pile 26a. The second pile 26b is also implemented.

  Next, in the step (p), the second pile 26b is raised by the pile lifting motor 53b, and the 12th stage stacking plate 27b of the second pile 26b is positioned at the plate upper limit position by the plate upper limit position detection sensor 58b. The same process (l) in the first pile 26a is performed in the second pile 26b. Then, the loading (cresting) of ten stacked loading plates 27a in the first pile 26a is performed between the steps (m) to (p). It should be noted that, in step (p), before the set number of sheets W is discharged onto the twelfth stacking plate 27a of the first pile 26a, the ten stacked stacking plates 27a in the first pile 26a are taken out ( The machine will stop if it is not carried out.

  Next, in step (q), the loaded paper take-out device 70 (cart 70a) advances and retreats with respect to the second pile 26b, and the loaded 10-stage loaded plates 27b are taken out (pile out) from the pile. The same process (m) in the first pile 26a is performed in the second pile 26b.

  Next, it progresses to a process (r)-a process (t), and the same thing as the process (b)-a process (d) in the 1st pile 26a is carried out also in the 2nd pile 26b. Then, the loading (cresting) of ten stacked loading plates 27b in the second pile 26b is performed between the steps (q) to (t). It should be noted that, in step (t), before the set number of sheets W is discharged onto the twelfth stacking plate 27b of the second pile 26b, the stacking plates 27b corresponding to the ten stacked stacking plates 27b in the second pile 26b ( The machine will stop if it is not carried out.

  Thereafter, the above-described steps (a) to (t) are repeated.

  On the other hand, manual control (operation) is performed according to the operation flow during manual control shown in FIGS.

  First, it is determined whether or not the first pile 26a or the second pile 26b for taking out the 10 sheets of paper W stacked in Step P1 is being discharged. If yes, the pile changeover switch 60a or 60b is operated in Step P2. The discharge is switched to another pile. That is, if the first pile 26a is being discharged, the pile changeover switch 60b of the second pile 26b is operated to switch the discharge of the paper W to the second pile 26b, and if the second pile 26b is being discharged. The pile changeover switch 60a of the first pile 26a is operated to switch the discharge of the paper W to the first pile 26a. On the other hand, if the result is NO in step P1, the process proceeds directly to step P3.

  Next, when the manual operation switch 54a or 54b of the first pile 26a or the second pile 26b for taking out the paper W in step P3 is turned on, the first pile 26a or the second pile 26b for taking out the paper W in step P4 is turned on. It is determined whether the pile lowering switch 55a or 55b is turned on. The pile lowering switches 55a and 55b are lowered while being pressed, and when the pressing is stopped, the lowering of the pile is stopped.

  Next, if yes in step P4, the first pile 26a or the second pile 26b, which is a paper take-out pile, is lowered by the pile lifting motor 53a or 53b in step P5. If no, the paper is piled in step P6. The lowering of the first pile 26a or the second pile 26b, which is the take-out pile, is stopped and the process returns to Step P4.

  Next, in step P7, whether or not the plate insertion position detection sensor 57a or 57b is turned on, that is, the level on the uppermost stack plate 27a or 27b on which the paper W is stacked (the plate support member). Is detected by the plate insertion position detection sensor 57a or 57b. If yes, the lowering of the first pile 26a or the second pile 26b, which is the paper takeout pile, is stopped in step P8. If there is, return to Step P4.

  Next, it is determined in step P9 whether or not the pile lowering switch 55a or 55b of the first pile 26a or the second pile 26b for taking out the paper W is turned on. If the first pile 26a or the second pile 26b is lowered by the pile raising / lowering motor 53a or 53b, if not, the lowering of the first pile 26a or the second pile 26b, which is the paper take-out pile, is stopped in step P11, and step P9. Return to.

  Next, in step P12, it is determined whether or not the plate insertion position detection sensor 57a or 57b is turned on. If yes, the lowering of the first pile 26a or the second pile 26b, which is a paper takeout pile, is stopped in step P13. That is, the upper stage (the board support member) of the uppermost stage stacking board 27a or 27b on which the paper W is stacked is stopped at the board insertion position L1, while if not, the process returns to Step P9. .

  Next, when the plate insertion switch 59a or 59b on the side of the first pile 26a or the second pile 26b that is the paper take-out pile is turned on in Step P14, the first pile 26a or the second pile that is the paper take-out pile in Step P15. The loading plate 27a or 27b is inserted by the loading plate insertion device 71 on the 26b side. In other words, the stacking plate 27a or 27b is inserted into the two upper layers (the plate support member) of the uppermost stacking plate 27a or 27b on which the paper W is stacked.

  Next, in step P16, it is determined whether or not the pile raising switch 56a or 56b of the first pile 26a or the second pile 26b for taking out the paper W is turned on. If the first pile 26a or the second pile 26b is raised by the pile raising / lowering motor 53a or 53b, if the answer is NO, the raising of the first pile 26a or the second pile 26b, which is the paper take-out pile, is stopped and the step P16 is stopped. Return to.

  Next, in step P19, it is determined whether or not the plate upper limit position detection sensor 58a or 58b is turned on. If yes, the rise of the first pile 26a or the second pile 26b, which is a paper take-out pile, is stopped in step P20. That is, the upper stage (the board support member) of the uppermost stage stacking board 27a or 27b on which the paper W is stacked is stopped at the board upper limit position L2, while if not, the process returns to Step P16. .

  Next, in step P21, a printer drive device using the first beam sensor 62a or 62b, the second beam sensor 63a or 63b, and the third beam sensor 64a or 64b of the first pile 26a or the second pile 26b, which is a paper take-out pile. After the stop command is ignored (invalidated), at least one of the first beam sensor 62a or 62b, the second beam sensor 63a or 63b, and the third beam sensor 64a or 64b is shielded from light (step P22a and step P22b). When the safety bar opening / closing sensor 61a or 61b is turned off (the safety bar is opened), the driving of the pile lifting / lowering motor 53a or 53b is stopped (locked) in step P23.

  Next, in step P24, the stacked paper take-out device 70 (cart 71a) is advanced or retracted with respect to the first pile 26a or the second pile 26b, which is a paper take-out pile, and the stacked 10-stage stacked plates 27a or 27b are out of the pile. Is taken out (mountain).

  Thereafter, the operations of Step P1 to Step P23 described above are repeated.

  Thus, according to the present embodiment, the stacking of the paper W on the stacking plates 27a or 27b for 10 stages is completed in the first pile 26a or the second pile 26b, and the 10 stacks of the stacked stacks are completed. When the stacking plate 27a or 27b is taken out (stacked out) from the pile, first, the upper stage (the plate support member) of the uppermost stacking plate 27a or 27b on which the paper W is stacked is inserted into the plate. The first pile 26a or the second pile 26b is lowered until the position L1 is reached.

  Next, when the two upper steps (the plate support member) come to the plate insertion position L1, the lowering of the first pile 26a or the second pile 26b is stopped, and the next step (the plate support member) In order to start the stacking (discharge) of the paper W on the 10-stage stacking board 27a or 27b, the first-stage (in other words, the 12th-stage) stacking board 27a or 27b on which the paper W is not yet stacked is inserted. The

  Next, when the first pile 26a or the second pile 26b is raised and the unstacked first-stage stacking plate 27a or 27b reaches the plate upper limit position (paper stacking position) L2, the first pile 26a or the second pile. The rise of 26b is stopped. Under this state, 10 stacked stacking plates 27a or 27b for 10 stacks are removed (crested) out of the pile using the stacked paper take-out device 70.

  In this embodiment, when the unstacked first-stage stacking plate 27a or 27b reaches the plate upper limit position (paper stacking position) L2, the first beam sensor 62a or 62b, the second beam sensor 63a or 63b, and the second The stop command of the printer drive device by the three-beam sensor 64a or 64b is ignored (invalidated), and under this state, the unloaded first stacking plate 27a or 27b and the paper W are loaded. Since one stage of the stacking board 27a or 27b is removed between the upper stacking board 27a or 27b, the 10 stages loaded by the stacked paper take-out device 70 (fork member 70c) at the time of taking out (mounting out). Even if the stacking plate 27a or 27b is slightly lifted, the paper W on the uppermost stacking plate 27a or 27b may not interfere with the unstacked first stacking plate 27a or 27b. .

  As a result, when the stacked 10-layer loading plates 27a or 27b are taken out (crested), the driving device (printing machine) can be smoothly taken out under continuous operation without stopping the operation of the printing press. The rate can be improved.

  When the unstacked first-stage stacking plate 27a or 27b is positioned at the plate upper limit position (paper stacking position) L2, the stacking plate 27a or 27b causes the discharge chain 22b and the paper W of the paper discharge device 22 to move. Partition the upper space between the loaded uppermost loading plates 27a or 27b and shield the lower surface side (traveling area) of the paper discharge chain 22b to avoid interference with other objects (intrusion of the operator). Can increase safety. In the illustrated example, the stacking plate 27a or 27b at the plate upper limit position (paper stacking position) L2 is flush with the horizontal plate portion of the cover 67a or 67b having an L-shaped cross section, so Since it can be shielded greatly, the safety is further enhanced. Further, by using a transparent material for the cover 67a or 67b, it is possible to see through, and internal monitoring is possible.

  Further, at the time of extraction (mounting), at least one of the first beam sensor 62a or 62b, the second beam sensor 63a or 63b, and the third beam sensor 64a or 64b is shielded from light or the safety bar 66a or 66b is opened. (When raised), the drive of the pile lifting motor 53 or 53b that moves the endless chain to raise or lower the stacking plate 27a or 27b is stopped (locked). It is avoided that the endless chain travels unintentionally and the loading plate 27a or 27b moves up and down at the time of advancement and retreat. Thereby, even if it is under the continuous driving | operation of a drive device (printing machine), it can take out safely (mounting). Of course, the safety bar 66a or 66b has a function of preventing entry into the access area except during the above-described removal (mounting), and the first beam sensor 62a or 62b, the second beam sensor 63a or 63b, and the third beam. This is a backup when the sensor 64a or 64b fails or malfunctions.

  Needless to say, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. For example, the number of piles and the number of stacking plate stages can be changed, and the stacking plate can be pulled out over a plurality of levels without being limited to one level.

  The present invention can be applied to a so-called special intaglio printing machine for printing banknotes, securities and the like.

DESCRIPTION OF SYMBOLS 10 Paper feeder 11 Substrate 12 Swing device 13 Transfer cylinder 14 Impression cylinder 15 Plate cylinder 16 Ink collecting cylinder 17 Chablon cylinder 18 Inking apparatus 19 Wiping roller 20 Wiping tank 21 Paper discharge cylinder 22 Paper discharge apparatus 23, 24, 25 Frame 24a Window 26a-26c First to third piles 27a, 27b Stack plate 34 Stack plate 50 Control device 51 Machine motor 52 Counter 53a, 53b Pile lift motor 54a, 54b Manual operation switch 55a, 55b Pile lowering switch 56a, 56b Pile Lift switch 57a, 57b Plate insertion position detection sensor 58a, 58b Plate upper limit position detection sensor 59a, 59b Plate insertion switch 60a, 60b Pile changeover switch 61a, 61b Safety bar opening / closing sensor 62a, 62b First beam sensor 63a, 63b Second bee Sensors 64a and 64b Third beam sensors 66a and 66b Safety bars 67a and 67b Cover 70 Loading paper take-out device 70a Carriage 70b Lifting frame 70c Fork member 71 Loading plate insertion device 71a Carriage 71b Lifter 71c Pusher L1 Plate insertion position L2 Plate upper limit position L3 Endless chain travel line W paper

Claims (3)

A sheet conveying device for conveying a sheet;
A pile having multi-stage stacking plates for stacking sheets discharged from the sheet conveying device;
An intrusion detector for detecting intrusion into the pile and stopping the sheet conveying device;
In a sheet discharge device comprising:
A sheet stacking position detector for detecting that the stacking plate is positioned at a sheet stacking position;
A control device that invalidates the stop of the sheet conveying device by detection of the intrusion detector based on a detection signal of the sheet stacking position detector;
And providing
The sheet discharging apparatus according to claim 1, wherein the sheet stacking position of the stacking plate is a plate upper limit position that is a rising limit of the stacking plate, and the lower surface of the sheet conveyance area is shielded by the stacking plate . Adjacent to the stacking plate positioned in front Symbol sheet stacking position provided an L-shaped cover, the cover, the vertical plate portion from the pile above the delivery chains travel area between to said sheet stacking position 2. The sheet conveyance area according to claim 1, wherein the side surface of the sheet conveyance area is shielded while the horizontal plate portion is flush with the stacking board at the sheet stacking position and shields the lower surface of the sheet conveyance area together with the stacking board. The sheet discharging apparatus described in 1. 3. The sheet discharge device according to claim 2, wherein a safety bar that can be opened and closed is provided at a side of the sheet conveying area to shield the side of the sheet conveying area except when the stacking plate is taken out.

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