JP2012062126A - Sheet discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet discharge device for improving a work efficiency by enabling a sheet to be taken out without moving a stacking plate up and down.SOLUTION: The sheet discharge device includes endless chains 30, a chain motor 31, supporting bars 33 and the stacking plate 34. The sheet discharge device is further provided with tongues 40 movable between a regulating position where they abut on the front end of a paper sheet W stacked on the stacking plate 34 and a retracting position above the surface of the paper sheet, tongue actuators 42 for moving the tongues, a window hole 52 formed on a downstream side of the tongues and the endless chains in the conveying direction of the paper, a door 49 opening and closing the window hole, a door sensor 54 detecting the state of opening/closing of the door, and a controller 60 controlling the chain motor 31 to inhibit the endless chains from moving when opening state of the door is detected by the door sensor and controlling the tongue actuators 42 to move the tongues to the retracting position. When the door is open, a sample paper sheet W on the stacking plate can be taken out of the window hole through the part between right and left endless chains.

Description

  The present invention relates to a sheet discharging apparatus that is provided in an apparatus that handles sheets, such as a sheet-fed printing machine, and stacks sheets to be discharged onto 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, 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

  By the way, in the sheet discharging apparatus as described above, for example, when sample paper is taken out from the third pile, conventionally, it is taken out from the side (working side) of the printing press. At this time, since the claw of the paper discharge chain, the side-by-side movement, and the like interfere with each other, a sufficient work space cannot be obtained. Therefore, the third pile is lowered each time to secure a sufficient work space.

  For this reason, there is a problem that the pile lifting operation becomes complicated and the workability is poor, for example, the third pile must be raised again to the paper stacking position after taking out the sample paper.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet discharging apparatus that can take out a sheet without requiring a lifting operation of a stacking plate and can improve workability.

The sheet discharging apparatus for solving the above problems is as follows:
A conveying device for holding and conveying the sheet;
A stacking plate for stacking sheets supported so as to be lifted and released from being held by the transport device;
Drive means for raising and lowering the loading plate;
In a sheet discharge device comprising:
The sheet stacked on the stacking plate is disposed on one end side of the front end or the rear end in the sheet transport direction by the transport device, and is stacked with a regulation position that regulates one end of the stacked sheets. A restricting member movable between a retracted position above the upper surface of the sheet,
Restriction member moving means for moving the restriction member between the restriction position and the retracted position;
The sheet loaded on the stacking plate is provided on one end side of the leading or trailing edge of the sheet in the sheet conveying direction by the conveying device, and is disposed so that the regulating member is positioned between the stacked sheets. An opening,
A door that opens and closes the opening;
Door opening / closing state detecting means for detecting the opening / closing state of the door;
Based on a detection signal from the door open / close state detection means, a control device for controlling the drive means so that the loading plate does not move up and down when the door is in an open state;
Further comprising
The sheet stacked on the stacking plate can be taken out from the opening when the door is open.

Also,
An endless body disposed in the four corners of the stacked sheets and traveling in the vertical direction in synchronization with each other by the driving means;
It extends in a direction perpendicular to the sheet conveying direction by the conveying device, is supported by the pair of left and right endless bodies as viewed in the sheet conveying direction by the conveying device, and is arranged at equal intervals in the longitudinal direction of the endless body. A plurality of support members that circulate so as to descend on the inside by traveling of the endless body,
The stacking plate is supported by a pair of front and rear support members as viewed in the sheet conveying direction by the conveying device,
The opening is disposed such that the regulating member and the pair of left and right endless bodies are positioned between the stacked sheets and the opening.
In the open state of the door, the sheets stacked on the stacking plate can be taken out through the opening between the left and right endless bodies.

Also,
A loading plate detecting means for detecting that the loading plate is located at a sheet loading position;
When the door is in an open state and the stacking plate is not positioned at the sheet stacking position, the control device determines the restriction based on detection signals from the door open / closed state detection unit and the stacking plate detection unit. The drive means is controlled so as not to move the member to the retracted position.

  According to the above-described sheet discharge device according to the present invention, since the sheets stacked on the stacking plate are extracted from the top and bottom direction of the sheet, it becomes possible to take out the sheets without raising and lowering the stacking plate. Workability is improved.

It is a schematic block diagram of the intaglio printing machine which shows one Example of this invention. FIG. 3 is an enlarged side view of a main part of the paper discharge device. It is an AA arrow line view of FIG. FIG. 3 is a view taken in the direction of arrow B in FIG. 2. It is a control block diagram.

  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 enlarged side view of a principal part of a paper discharge device, FIG. 3 is a view taken along line AA in FIG. FIG. 5 is a control block diagram.

  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 the paper discharge 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 this embodiment, when the operator takes out the paper (sample paper or scraped paper) W from the stacking plate 34 of the third pile 26c, it is not from the side (working side) of the conventional printing machine, but from the printing machine. Is taken out from the front-rear direction (not the left-right direction of the third pile 26c but the front-rear direction).

That is, as shown in FIG. 2, the third pile 26 c includes an endless chain (endless body) 30 that travels vertically in synchronization with each other at four corners of the paper stacking position, and these endless chains 30 are connected to the drive shaft 3.
1a and a chain motor (driving means) 31 (see FIG. 5) that runs in conjunction with a driving force transmitting means (not shown) and a pair of left and right endless chains 30 supported by a locking member 32 and the endless chain 30 Between a plurality of support bars (support members) 33 that are arranged at equal intervals in the longitudinal direction of the endless chain 30 so as to descend on the inside by traveling of the endless chain 30 and a pair of front and back support bars 33 of the same height that descend on the inside And a loading plate 34 supported by the vehicle.

  The presence or absence of the stacking plate 34 positioned at the paper stacking position is detected by a stacking plate sensor (loading plate detecting means) 35 such as a limit switch, and above the stacking plate 34 at the position, FIG. As shown in the figure, a lateral feed 37 comprising a guide plate 37a and a pair of front and rear alignment plates 37b supported by the frame 36 of the paper discharge device 22 is arranged to be movable and adjustable in the paper width direction according to the paper width dimension. At the same time, a paper surface height detection sensor 38 such as a photoelectric switch is supported on one side of the guide plate 37a so that its position can be adjusted in the paper surface height direction.

  In addition, above the stacking plate 34 positioned at the paper stacking position, a plurality of pads (four in the illustrated example) are arranged at predetermined intervals in the paper width direction and supported by the frame 36 of the paper discharge device 22. At the same time, a tongue (regulating member) 40 is coupled to the lower ends of the two inner pads 39 by pins 41. The velocities 40 abut against the leading end portion of the paper W stacked on the stacking plate 34 by the expansion and contraction operation of the veloculator actuator (regulating member moving means) 42 such as a fluid pressure cylinder, respectively. It can be swung (moved) between a position (solid line position in FIG. 3) and a retreat position (chain line position in FIG. 3) above the paper surface of the paper W.

  As shown also in FIG. 4, between the pair of left and right endless chains 30 located downstream of the tongue 40 in the paper conveyance direction, the front and rear ends are open and the cross section is rectangular in the paper width direction (left and right direction). A guide tube 43 is provided. The guide cylinder 43 is coupled to the chain guide 46 of the endless chain 30 by means of bolts 47 via brackets 44 at both left and right ends of the lower surface thereof. The chain guides 46 are respectively fixed to the frame 36 of the paper discharge device 22 with hexagon pins 48.

  The guide tube 43 includes a rear end opening 43b that opens toward the stacking plate 34 and a front end opening 43a that opens on the opposite side of the rear end opening 43b. A recessed portion 51 that is recessed toward the stacking plate 34 is provided at a location facing the guide cylinder 43 of the safety cover 50 fixed between the left and right frames 36 of the paper discharge device 22. A window hole (opening) 52 having substantially the same shape and the same size as the front end opening 43 a is provided in the vertical wall 51 a of the recessed portion 51 at a position facing the front end opening 43 a of the guide tube 43. On the other hand, a door 49 with a handle is rotatably supported on the left and right side walls 51b of the recessed portion 51 via a pivot 53 (see the pivot support portion h in FIG. 2). Is opened and closed.

  The left pivot 53 is positioned outside the recessed portion 51 to detect the opening / closing operation of the door 49, and a cam 54a fixed to the pivot 53 and the cam 54a via a ball 54b. A door sensor (door open / closed state detecting means) 54 which is a limit switch having a switch body 54c and the like incorporating a contact mechanism for rolling contact is assembled.

  As shown in FIG. 5, detection signals from the door sensor 54, the loading plate sensor 35 and the paper surface height detection sensor 38 are sent to a control device 60 such as a microcomputer comprising a CPU, a ROM and a RAM, an input / output device and an interface. In addition to the input, the control device 60 drives and controls the chain motor 31 and the tongue actuator 42 described above in accordance with the detection signal.

  That is, the control device 60 controls the chain motor 31 so that the endless chain 30 does not travel when the door sensor 54 detects the open state of the door 49 (the state where the door 49 is not closed) and moves the tongue 40 to the retracted position. The velo actuator 42 is controlled so as to make it happen. Even when the door sensor 54 detects the open operation state of the door 49, when the stacking plate sensor 35 detects that the stacking plate 34 is not positioned at the paper stacking position, the tongue 40 is retracted. The vero actuator 42 is driven and controlled so as not to move to the position. Further, when the paper surface height detection sensor 38 detects that the paper (sample paper or waste paper) W is fully loaded on the stacking plate 34 when the door 49 is closed, the stacking plate 34 is lowered. The chain motor 31 is also controlled so that the endless chain 30 travels in order to load the paper W on the next stacking plate 34.

  Because of this configuration, in the third pile 26c, the paper (sample paper or scraped paper) W released to the paper discharge claw of the paper discharge chain 22b is moved and positioned to the abutment 39 and the tongue 40 and the laterally aligned 37. Is loaded on the loading plate 34.

  When the operator takes out the paper W on the stacking plate 34 of the third pile 26c while the paper W is being stacked, the operator opens the door 49 in the recessed portion 51 disposed in front of the third pile 26c. When opened manually, the door sensor 54 detects the open state of the door 49.

  As a result, the control device 60 stops driving (locking) the chain motor 31 so as to disable the travel of the endless chain 30 and also confirms that the stacking plate 34 is in the paper stacking position (upward limit). Under the condition detected by the sensor 35, the vero actuator 42 is contracted to move the vero 40 to the retracted position. Conversely, when the loading plate sensor 35 does not detect that the loading plate 34 is in the paper loading position (upward limit), the extended state of the velo actuator 42 is maintained so as to hold the loading 40 in the restricted position. To do.

  As a result, when the stacking plate 34 is located at the paper stacking position, the operator reaches out into the guide tube 43 from the recessed portion 51 to transfer the paper W on the stacking plate 34 to the support bar 33 of the endless chain 30 or the like. While it can be easily taken out without being disturbed by the tongue 40, when the stacking plate 34 is not located at the paper stacking position, the support bar 33 of the endless chain 30 and the tongue 40 are obstructed and the door 49 is opened. However, the paper W on the stacking plate 34 cannot be taken out.

  On the other hand, when the door 49 is closed, the door sensor 54 detects the closed state of the door 49. As a result, the control device 60 releases the drive stop (locked) state of the chain motor 31 to enable the endless chain 30 to travel, and also confirms that the stacking plate 34 is positioned at the paper stacking position. Regardless of whether or not the condition is detected by 35, the vero actuator 42 is extended to move the vero 40 to the restricted position.

  As a result, the chain motor 31 performs normal drive control for replacing the stacking plate 34 in accordance with detection signals from the stacking plate sensor 35 and the paper surface height detection sensor 38.

  In this way, in this embodiment, the door 49 is simply opened from the front of the third pile 26c so that the paper (sample paper or scraped paper) W on the stacking plate 34 is simply taken out as in the prior art. Since the paper W on the stacking plate 34 can be taken out smoothly and easily through the guide cylinder 43 interposed between the left and right endless chains 30 without raising and lowering the stacking plate 34, the workability is improved. To do.

  In addition, since the paper (sample paper or scraped paper) W is taken out from the front of the third pile 26c, there is an advantage that the top and bottom of the paper W is not reversed even if the operator takes out with the right hand or the left hand. That is, when the paper W is taken out from the left and right direction (side) of the third pile 26c as in the prior art, considering the taking out of the paper W when the paper W is on the left side of the operator, one end side of the paper W with the left hand When grabbing the paper W and grabbing the other end of the paper W with the right hand, the paper W grasped with the left hand is rotated 180 degrees (turned upside down) and grasped with the right hand. When you take out the paper W by grabbing one end of the paper and grab the other end of the paper W with your left hand, the paper W grabbed with your right hand will slide as it is without being rotated, and you will grab it with your left hand. When the paper is taken out with the left hand, the top and bottom of the paper W is reversed. If you place the paper W on the table for inspection after taking out the paper W, if you do not determine the top and bottom of the paper W when you hold it in both hands, there will be cases where the work will be reversed before placing it on the table. However, when taking out from one end in the top-and-bottom direction as in this embodiment, the top-and-bottom direction when holding with both hands is changed regardless of whether it is taken out with the right hand or left hand. Therefore, in some cases, the troublesome work of turning over the paper W is eliminated, and the burden on the operator is reduced.

  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 guide cylinder 43 is not particularly provided, and the space between the left and right endless chains 30 may be used, and the take-out position may be changed from the front to the rear of the third pile 26c. Further, the shape and number of the tongue 40 may be appropriately changed, and various sensors and actuators may be used in other structures. In the present embodiment, an example in which the present invention is applied to a discharge device that stacks a small amount of sheets on a plurality of stacking plates using an endless chain called a “circulation type” is shown. It is not limited to this type of discharge device, but a discharge device that stacks a large number of sheets on a single stacking plate, or a corner in which a plurality of stacking plates each loaded with sheets are installed at the four corners of the stacking plate. It can also be applied to a stacking device that stacks through a stack.

  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 Windows 26a to 26c First to third piles 27a and 27b Stacking plate 30 Endless chain 31 Chain motor 32 Locking member 33 Support bar 34 Stacking plate 35 Stacking plate sensor 36 Paper discharge device frame 37 Side-by-side 38 Detection of paper surface height Sensor 39 contact 40 Velo 41 Pin 42 Velo actuator 43 Guide tube 43a Front end opening 44 Bracket 46 Chain guide 47 Bolt 48 Hex pin 49 Door with handle 50 Safety cover 51 Recessed part 52 Window hole 53 Axis 54 Door sensor 60 Control device W paper

Claims (3)

A conveying device for holding and conveying the sheet;
A stacking plate for stacking sheets supported so as to be lifted and released from being held by the transport device;
Drive means for raising and lowering the loading plate;
In a sheet discharge device comprising:
The sheet stacked on the stacking plate is disposed on one end side of the front end or the rear end in the sheet transport direction by the transport device, and is stacked with a regulation position that regulates one end of the stacked sheets. A restricting member movable between a retracted position above the upper surface of the sheet,
Restriction member moving means for moving the restriction member between the restriction position and the retracted position;
The sheet loaded on the stacking plate is provided on one end side of the leading or trailing edge of the sheet in the sheet conveying direction by the conveying device, and is disposed so that the regulating member is positioned between the stacked sheets. An opening,
A door that opens and closes the opening;
Door opening / closing state detecting means for detecting the opening / closing state of the door;
Based on a detection signal from the door open / close state detection means, a control device for controlling the drive means so that the loading plate does not move up and down when the door is in an open state;
Further comprising
The sheet discharging apparatus, wherein the sheet stacked on the stacking plate can be taken out from the opening when the door is open. An endless body disposed in the four corners of the stacked sheets and traveling in the vertical direction in synchronization with each other by the driving means;
It extends in a direction perpendicular to the sheet conveying direction by the conveying device, is supported by the pair of left and right endless bodies as viewed in the sheet conveying direction by the conveying device, and is arranged at equal intervals in the longitudinal direction of the endless body. A plurality of support members that circulate so as to descend on the inside by traveling of the endless body,
The stacking plate is supported by a pair of front and rear support members as viewed in the sheet conveying direction by the conveying device,
The opening is disposed such that the regulating member and the pair of left and right endless bodies are positioned between the stacked sheets and the opening.
The sheet discharging apparatus according to claim 1, wherein the sheet stacked on the stacking plate can be taken out from the opening portion between the left and right endless bodies when the door is open. A loading plate detecting means for detecting that the loading plate is located at a sheet loading position;
When the door is in an open state and the stacking plate is not positioned at the sheet stacking position, the control device determines the restriction based on detection signals from the door open / closed state detection unit and the stacking plate detection unit. The sheet discharging apparatus according to claim 2, wherein the driving unit is controlled so as not to move the member to the retracted position.

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