JP2004106455A - Sheet conveyance stop mechanism of printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure that an adjusting operation for an adjusting screw at a registering device can be easily performed and thereby, the efficient operation to set a position for positioning a sheet can be achieved. <P>SOLUTION: In this sheet conveyance stop mechanism of a printing machine, the registering device 60 equipped with an operating member which adjusts a position for positioning the sheet P from the upstream side is intervened between the downstream end of a feeder board 120 and the upstream end of a printing machine main body 110 and a stopper 30 for interrupting the feed of the sheet P to the printing machine main body 110 when the supply condition of the sheet P is abnormal and a stay 21 spanning the entire width of a feeder board 120 so as to support the stopper 30 are provided at a position above the downstream end of the feeder board 120. The stay 21 is structured that its position can be changed between a stationary position (an upper position) where the stopper 30 allows the sheet P to be fed and a space securing position (a lower position) where a space for operating the operating member can be secured. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a paper transport stop mechanism of a printing press used for printing sheets.
[0002]
[Prior art]
Conventionally, a printing machine 100 as shown in FIG. 6 is known. The printing press 100 includes a sheet feeding device 101 that supplies sheets P one by one, a printing press main body 110 that performs printing processing on the sheets P from the sheet feeding device 101, a sheet feeding device 101 and a printing device. The printer has a basic configuration including a feeder board 120 interposed between the machine main bodies 110 and transferring a sheet P from the paper feeding device 101 to the printing machine main body 110.
[0003]
The sheet feeding device 101 has a sheet feeding table 102 that holds a sheet P1 formed by stacking sheets P. The uppermost sheet P of the sheet P1 is provided behind the upper position (rightward in FIG. 6) in a state where the jet flow from the air jet nozzle 104 is blown onto the sheet P1 so as to be separated. The air is drawn toward the feeder board 120 while being attracted by the suction air drawn into the vacuum port 103, and then supplied to the printer main body 110 via the feeder board 120.
[0004]
The sheet feeding table 102 is configured to slightly raise the sheet P1 held each time the sheet P is fed toward the printing press main body 110, and the sheet P1 is held at the highest level of the sheet P1 held by the sheet feeding table 102. Is always adapted to correspond to the height position of the feeder board 120.
[0005]
The printing press main body 110 includes a roller group 111 composed of a number of rollers for supplying ink, a plate cylinder 112 having a plate on a peripheral surface provided below the roller group 111, and an ink of the plate of the plate cylinder 112. The blanket cylinder 113 on which the image is transferred to the peripheral surface, the impression cylinder 114 whose peripheral surface abuts on the peripheral surface of the blanket cylinder 113 via the sheet P, and the blanket cylinder 114 supplied from the downstream end of the feeder board 120. A sheet feeding cylinder 115 that guides the sheet P to the impression cylinder 114 is configured to be continuously connected downward. The sheet P supplied from the feeder board 120 is supplied to the impression cylinder 114 via the paper feed cylinder 115, and is printed by passing between the impression cylinder 114 and the blanket cylinder 113. ing.
[0006]
The feeder board 120 includes a table 121 laid between the paper feeding device 101 and the printing press main body 110 and a rubber belt that is stretched between predetermined rollers 122 so as to slide around the upper surface of the table 121. The sheet P sent from the sheet feeding device 101 is supplied to the sheet feeding cylinder 115 while being guided by the circling rubber belt 123.
[0007]
In such a printing press 100, a register device 130 is provided between the downstream end (the left end in FIG. 6) of the feeder board 120 and the paper feed cylinder 115. The register device 130 is for positioning the sheet P immediately before being fed into the paper feed cylinder 115, and the sheet P is formed into a predetermined positioning piece by using suction processing by air suction. The sheet is moved so as to be in contact with the sheet, and is sent out toward the sheet feeding cylinder 115 after the positioning process is completed.
[0008]
Further, a stopper 140 is provided at a position immediately upstream of the register device 130 and above the feeder board 120, and in the event of an abnormality such as the presence of a sheet P in the feeder board 120 even though it is not at the proper timing, for example. A part of the stopper 140 is lowered based on a detection signal from the sensor 150 for detecting the abnormality, and the sheet P is pressed and clamped between the upper surface of the table 121 and the sheet P so that the printing machine main body is pressed. It is adapted to block the supply to 110. This prevents the sheet P from being supplied to the printing press main body 110 in an abnormal state.
[0009]
The stopper 140 is attached to a stay 141 extending between a pair of frames in the width direction provided at a position above both sides of the table 121 and extending in a direction perpendicular to the plane of FIG.
[0010]
[Patent Document 1]
JP-A-1-127536
[Patent Document 2]
JP-A-6-191018
[Patent Document 3]
Japanese Patent No. 2831591
[0011]
[Problems to be solved by the invention]
By the way, in the conventional printing press 100 as described above, the front contact 131 that causes the register device 130 to contact the front edge of the sheet P, and the side edge contact 132 that contacts the side edge of the sheet P A block 133 for preventing and stabilizing the sheet P applied to the front contact 131 and the side edge contact 132 is provided. The position of the side edge contact 132 and the setting of the sheet P are also provided. A predetermined number of adjustment screws 134 are provided for setting the vertical position of the block 133 according to the thickness.
[0012]
Various devices 116 related to the operation of the printing press main body 110 are provided above the adjusting screw 134 and immediately behind the plate cylinder 112 and the blanket cylinder 113. A cover body 117 (a lower cover body 117a and a rear cover body 117b) is provided so as to cover the lower surface and the rear surface of the device 116.
[0013]
For this reason, the adjusting screw 134 is provided with the lower cover body 117a, the stay 141, the stopper 140, and the pair of side walls 118 in the width direction of the printing press main body 110 as viewed from the upstream side of the printing press main body 110 (in FIG. The side wall 118 on the side is accommodated in the adjusting screw mounting space V surrounded by the side wall 118 (not shown).
[0014]
Therefore, if the user tries to operate the adjustment screw 134, the stay 141 is in the way, so that the hand cannot be inserted into the adjustment screw installation space V from the upper position. A hand must be inserted into the adjusting screw installation space V through a narrow gap between the side wall 118 of the machine body 110 and the stopper 140, and the adjusting screw 134 must be operated in an inconvenient state. Since it cannot be operated, there is a problem that this becomes a bottleneck and an efficient adjustment operation cannot be performed.
[0015]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and makes it possible to easily perform an adjusting operation on an adjusting screw in a register device, thereby improving the efficiency of a sheet positioning position setting operation. It is an object of the present invention to provide a paper transport stop mechanism of a printing press that can perform the above.
[0016]
[Means for Solving the Problems]
The invention according to claim 1 is a paper transport stop mechanism for a printing press configured to sequentially feed sheets fed from a paper feeder to a printing press main body after positioning via a feeder board, A register is provided between the downstream end of the feeder board and the upstream end of the printing press. The register includes an operating member that adjusts the positioning position of the sheet from the upstream side, and is located above the downstream end of the feeder board. A stopper for preventing the sheet from being fed into the printing press main body when the supply state of the sheet is abnormal, and a stay erected over the entire width of the feeder board so as to support the stopper. Wherein the stay is configured to be changeable in position between a steady position located in a continuous driving state of the printing press and a space securing position capable of securing a space for operating the operation member. It is an butterfly.
[0017]
According to this invention, when operating the adjustment operation member of the register device to adjust the positioning position of the sheet, the operation member is operated by positioning the stay located at the steady position at the space securing position. For this reason, it is possible to easily insert a hand from the space toward the operating member of the register device, thereby quickly adjusting the positioning position of the sheet, As a result, it can contribute to the efficiency of the printing operation.
[0018]
According to a second aspect of the present invention, in the first aspect of the present invention, the stopper is set in a vertical position that can prevent the sheet from being fed in a state where the stay is set to a steady position. On the other hand, in a state where the stay is set at the space securing position, the stopper is configured to be set to the horizontal position that cannot prevent the abnormal supply state of the sheet, and the stopper is set to the horizontal position. Thus, the paper feeding device and the printing press main body cannot be continuously driven.
[0019]
According to the present invention, when the printing press is continuously driven, the stay is set to the steady position, and the stopper is set in the vertical position in which the stopper can prevent feeding of the sheet. When an abnormality occurs in the paper feeding state of the sheet, the sheet is stopped by a predetermined operation of the stopper, and the sheet is prevented from being fed toward the printing press body until a predetermined restoration process is completed. Can perform the original function of the paper transport stop mechanism.
[0020]
On the other hand, when the stay is set at the space securing position, the stopper is set in the horizontal position in which the paper feeding device and the printing press main body cannot be continuously driven, thereby setting the paper feeding device and the printing press main body. The continuous drive of the printer is stopped, so it is ensured that the printing process is performed on the sheets that are sequentially fed while the stopper cannot prevent the abnormal supply state of the sheets. Can be prevented.
[0021]
The invention according to claim 3 is the invention according to claim 1 or 2, wherein the feeder board is provided with a paper passage sensor for detecting that the sheet has passed at a predetermined timing, and the paper passage sensor is , Wherein the stopper is commonly used for detecting a state in which the posture is set to the lateral posture.
[0022]
According to the present invention, it is not necessary to separately provide a sensor for detecting that the stopper has been turned to the horizontal position, which can contribute to a reduction in component costs.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 are perspective views showing an embodiment of a paper transport stop mechanism of a printing press according to the present invention. FIG. 1 shows a state in which a stay is located at an upper position, and FIG. Are shown. FIGS. 3 and 4 are explanatory side views of the paper transport stop mechanism shown in FIGS. 1 and 2, and FIG. 3 corresponds to FIG. 1 and FIG. 4 corresponds to FIG. In these figures, parts that are the same as the parts shown in FIG. 6 are given the same symbols except for some parts.
[0024]
As shown in these figures, the paper transport stopping mechanism 10 supplies the sheet P supplied by the rubber belt 123 to the printer main body 110 via the register device 130 in the printer 100 as shown in FIG. When feeding the sheet P to the paper cylinder 115, the sheet P is not properly operated when the sheet P is being properly conveyed, and the sheet P is conveyed by the rubber belt 123. Detecting this, it is configured to prevent the conveyance of the sheet P, and is installed between a pair of width direction side walls (frames) 118 provided so as to sandwich the table 121 of the feeder board 120. A stopper 30 attached to the stopper holding member 20, a stopper 30 for preventing movement of the sheet P when an abnormality occurs, and a stopper 30 attached to the stopper holding member 20. That the sensor bracket 40 is configured by a paper passage sensor 50 mounted on the table 121 in correspondence with the sensor bracket 40.
[0025]
The stopper holding member 20 has a long stay 21 in the width direction (a direction orthogonal to the sheet P transport direction) and a width extending concentrically outward from each end of the stay 21. The stay 21 includes a pair of locking members 22 in the direction, a pair of connecting arms 23 respectively fixed to the stay 21, and a predetermined number (two in the present embodiment) of brackets 24 fixed in place on the stay 21. .
[0026]
In the present embodiment, the stay 21 is made of square material, and the length is set to be slightly shorter than the width of the feeder board 120. By connecting the locking members 22 to both ends of the stay 21, the total length of the stay 21 and the pair of locking members 22 is made substantially equal to the width of the feeder board 120.
[0027]
The locking member 22 is for locking the stay 21 to the pair of side walls 118 in the width direction, and is provided with a cylindrical locking member main body 22a and a concentrically mounted inside the locking member main body 22a. And a locking pin 22b. The locking pin 22b has a pin-shaped operating piece 22c protruding in a direction orthogonal to the locking pin 22b, while the locking member main body 22a has an inclined length formed to project the operating piece 22c to the outside. A hole 22d is provided.
[0028]
The inclined elongated hole 22d is formed spirally from the peripheral surface of the locking member main body 22a toward the stay 21. By operating the operation piece 22c in one direction, the operation piece 22c is inserted into the inclined elongated hole 22d. While being guided, the locking pin 22b pivots around the axis and protrudes outside from the locking member main body 22a, while operating the operation piece 22c in the other direction causes the locking pin 22b to move inside the locking member main body 22a. I am immersed in. The locking pin 22b normally projects outside from the locking member main body 22a by the biasing force of a biasing means (not shown), so that the locking pin 22b is fitted into the locking hole 118a. Will be maintained stably.
[0029]
The locking member main body 22a has an engagement protrusion 22e protruding from a base end surface thereof, and is screwed in a state where the engagement protrusion 22e is fitted into an engagement hole formed in the end surface of the stay 21. By performing such operations, the stay 21 is fixed to the stay 21.
[0030]
The connection arm 23 is for connecting the stopper holding member 20 to the pair of side walls 118, and has an L shape in a side view. The connection arm 23 includes an inverted L-shaped portion 23a having an inverted L-shape in a front view, and an arm body 23b protruding rearward from a lower portion of the inverted L-shaped portion 23a. . Then, the horizontally extending portion of each inverted L-shaped portion 23a is attached to the entire surface of each end of the stay 21 by screwing or the like, so that the pair of connection arms 23 are formed on the stopper holding member 20. I am trying to become.
[0031]
Each of the connecting arms 23 has a predetermined shape in which a support shaft 25 having a male screw threaded through the rear end of each arm body 23b in FIG. 1 is penetrated, and these support shafts 25 are screwed into the respective side walls 118. It is attached to the pair of side walls 118 so as to be rotatable around the support shaft 25 by being screwed and fastened to the screw hole.
[0032]
The bracket 24 holds the stopper 30, and two brackets are employed in the present embodiment. The bracket 24 includes a bracket main body 24a having a U-shape in plan view and connection pieces 24b protruding upward from a central upper edge of the bracket main body 24a, and each connection piece 24b is screwed. In addition, the bracket 21 is shaped so that the distal end of the bracket body 24a projects rearward while being fixed to the front side of the stay 21 in FIG. Then, the stopper 30 is held on the U-shaped bracket body 24a by bolting or the like.
[0033]
The stopper holding member 20 thus configured is rotated forward and reverse around the support shaft 25 so that the arm body 23b extends horizontally forward and the stay 21 approaches the lower end edge of the rear cover body 117b. The posture can be changed between the above-described upper position (steady position) and a lower position (space securing position) in which the arm body 23b hangs down from the support shaft 25 and the stay 21 is lowered.
[0034]
On the other hand, a locking hole 118a is formed in each side wall 118 so that the locking pin 22b can be fitted into a portion corresponding to the locking pin 22b of the locking member 22 when the stay 21 is located at the upper position. In addition, a pair of abutment projections 118b that abut on the inverted L-shaped portion 23a of the connection arm 23 in a state where the stay 21 is located at the lower position are provided so as to protrude in directions facing each other.
[0035]
Accordingly, by operating the operation piece 22c to protrude the locking pin 22b from the locking member main body 22a in a state where the stay 21 is set at the upper position, each locking pin 22b is respectively formed in the corresponding locking hole 118a. In this state, the position setting state of the stay 21 at the upper position is maintained, while in the state where the stay 21 is set at the lower position, each locking member main body 22 a Each of the protrusions 118b is pressed and stopped, whereby the position setting state at the position below the stay 21 is maintained.
[0036]
The stopper 30 includes a cylinder 31 having a slightly elongated rectangular parallelepiped shape, a piston rod 32 concentrically projecting outward from one end surface (a lower end surface in FIG. 1) of the cylinder portion 31, and The piston rod 32 is made of, for example, a rubber movement-inhibiting disk 33 that is concentrically fixed to the tip of the piston rod 32. The stopper 30 is fixed to the bracket 24 by the connection bolt 24c passing through the bracket main body 24a and being fastened with a nut in a state where the upper end of the cylinder portion 31 is sandwiched between the bracket main body 24a of the bracket 24. It has become so.
[0037]
A cylinder 31a is housed in the cylinder portion 31, and a piston 32a connected to a piston rod 32 and a coil spring (not shown) for urging the piston 32a upward in FIG. Is supplied, and compressed air from a predetermined air source is supplied into the cylinder 31a via the air inlet 31b, so that the movement preventing disk 33 moves by the movement of the piston 32a against the urging force of the spring, thereby causing the piston rod 32 to move. And protrudes outward through the. When the supply of the compressed air into the cylinder 31a is stopped, the piston 32a returns to the original position by the urging force of the spring, and the movement preventing disk 33 also returns to the original position. .
[0038]
When the stay 21 is set at the upper position, as shown in FIGS. 1 and 3, the stopper 30 is set in the vertical position hanging down from the bracket 24, while the stay 21 is set at the lower position. 2 and FIG. 4, the posture is set to a horizontal posture extending horizontally rearward from the bracket 24, and the posture is set to a vertical posture. In this state, the structure is set such that the lower surface of the movement preventing disk 33 is separated from the upper surface of the table 121 by a predetermined distance shorter than the stroke of the piston 32a.
[0039]
Therefore, when the sheet P is moving on the table 121 by the driving of the rubber belt 123 in a state where the stopper 30 is set in the vertical position, the movement preventing disk 33 is lowered by the driving of the stopper 30. For example, the movement-preventing disk 33 presses the sheet P onto the table 121 or the front edge of the sheet P abuts against the movement-preventing disk 33, whereby the sheet P is transferred to the printing press main body 110. Supply will be blocked.
[0040]
The paper passage sensor 50 is for detecting a sheet P sent on the table 121 by driving the rubber belt 123, and is located at the same position in the transport direction as the movement preventing disk 33 on the back side of the table 121 (see FIG. That is, it is attached to the movement-preventing disk 33 (on the widthwise side). A detection hole 121a is formed in the table 121 so that the detection surface of the paper passage sensor 50 faces the object to be detected.
[0041]
The paper passage sensor 50 is configured to continuously obtain a detection signal through the detection hole 121a, and the obtained detection signal is input to a control device (not shown). In the control device, it is determined whether or not the detection signal indicating the presence of the detected object matches the preset supply timing of the sheet P based on a predetermined program stored in advance.
[0042]
When the detection signal indicating the presence of the detected object does not match the supply timing of the sheet P (that is, when an abnormality occurs in the supply of the sheet P), the control device sends the signal to the compressed air source (not shown). A control signal for sending compressed air to the cylinder 31a of the stopper 30 is output, and the supply of the compressed air into the cylinder 31a causes the movement prevention disk 33 to protrude, and the sheet P prevents the protruded movement. By being pressed onto the table 121 by the disk 33, supply to the printing press main body 110 is prevented. In this way, it is possible to reliably prevent the printing machine main body 110 from performing a printing process on the sheet P that has been improperly sent due to a timing deviation or the like.
[0043]
As shown in FIGS. 2 and 4, the sensor bracket 40 faces the detection hole 121a in a state where the stay 21 is set at the lower position, thereby causing the paper passage sensor 50 to detect the sensor bracket 40. This is for detecting the state in which the stay 21 is located at the lower position (that is, the paper passage sensor 50 detects the abnormality in the supply state of the sheet P, and detects whether the stay 21 is located at the lower position). It can be shared with detection.)
[0044]
The sensor bracket 40 includes a connection piece 41 fixed to the rear surface side of the stay 21 in FIG. 1 by screwing or the like, a bracket body 42 projecting forward from a lower end of the connection piece 41, and a bracket A detection piece 43 is supported at the front end of the main body 42 so as to be rotatable around a connection shaft 42a. The detected piece 43 is provided with a detected small piece 43a whose lower end is bent at a substantially right angle in the width direction.
[0045]
As shown in FIGS. 2 and 4, the sensor bracket 40 has a detection piece 43 rotated around the connection shaft 42a in a state where the stay 21 is located at the lower position, and the detection piece 43a is inserted into the detection hole 121a. The shape and dimensions are set so as to face each other. Therefore, when the stay 21 is set at the lower position in a state where the sheet P is not fed, the sheet passage sensor 50 detects the detected small piece 43a instead of the sheet P.
[0046]
When the paper passage sensor 50 detects the detected small piece 43a in a state where the stay 21 is set at the lower position and the stopper 30 which has been changed to the horizontal posture cannot perform its original function, the control device Is configured to output a predetermined control signal to the paper feeding device 101 and the printing press main body 110 based on the detection signal so that the paper feeding device 101 and the printing press main body 110 cannot be continuously operated. Therefore, in the state where the stopper 30 is set to the horizontal position, even if the operator erroneously turns on the switch for continuously operating the sheet feeding device 101 and the printing press main body 110, the sheet feeding device 101 sets the sheet. The problem that P is supplied continuously is prevented.
[0047]
Next, the register device 60 provided immediately downstream of the table 121 will be briefly described based on FIG. 5 with reference to FIGS. FIG. 5 is a front view showing one embodiment of the register device 60 as viewed from the upstream side.
[0048]
As shown in FIG. 5, the register device 60 is used to accurately set the position of the sheet P before sending the sheet P to the printing press main body 110, and an axis between a pair of side walls 118. A rotating shaft 61 that is rotatably mounted around a center and that is rotated by the drive of a drive motor (not shown); a pair of width-direction base end blocks 62 that are fitted on both sides of the rotation shaft 61; A cylindrical body 63 which is provided adjacent to the rotary shaft 61 so as to be rotatable integrally with the rotary shaft 61 at an inner position thereof, and a casing block which is disposed above the cylindrical body 63 and the base end block 62. 64, a movable block 65 provided in the casing block 64 so as to be able to reciprocate in the width direction, and a sheet abutting on an upper side surface (paper contact surface 64a) of the casing block 64 at a position above the movable block 65. Acceptance The lock 66 is configured to include a plurality of adjustment screw 67 for fastening the adjusted position the position of the respective blocks.
[0049]
The cylindrical body 63 is provided with an inclined groove 63a formed in an oblique and annular shape on the peripheral surface thereof, while the movable block 65 is provided with a cam 65a which is inserted in sliding contact with the inclined groove 63a. The cam 65a is guided by the inclined groove 63a to reciprocate in the width direction by rotating the rotation shaft 61, whereby the movable block 65 reciprocates in the width direction.
[0050]
A plurality of air suction holes 65b are provided on the upper surface of the movable block 65, and the sheet P reaching the upper surface position of the air suction holes 65b is sucked and adheres to the upper surface of the movable block 65, and is moved in the width direction. The movable block 65 moves outward with the movement of the movable block 65, and the side edge thereof abuts on the paper contact surface 64a of the casing block 64, whereby the lateral position is determined. .
[0051]
Then, according to the printing situation, each block is positioned by loosening the adjusting screw 67 to set the position of the paper contact surface 64a, and after the positioning is completed, the adjusting screw 67 is fastened to adjust the paper contact according to the situation. The position of the surface 64a is set.
[0052]
The paper transport stop mechanism 10 of the present invention improves the operability of the adjustment screw 67 as described above. Hereinafter, the operation of the present invention will be described with reference to FIGS. First, in a state in which the stopper 30 is set in the vertical position by setting the stay 21 to the upper position, as shown in FIGS. 1 and 3, the stay 21 is moved to the upper position just before the feeder board 120. Traverses the conveying path of the sheet P in the width direction, so that only a small gap exists between the stay 21 and the rear cover body 117b. Therefore, conventionally, a hand is not inserted into the adjusting screw installation space V through a narrow gap surrounded by the stopper 30, the stay 21, and the side wall 118, so that the registration device 60 is That is, the adjustment screw 67 had to be operated.
[0053]
On the other hand, in the paper transport stop mechanism 10 of the present invention, prior to the operation of the adjusting screw 67, first, the operating piece 22c of the locking member main body 22a provided at the end of the stay 21 is operated. The locking of the stopper holding member 20 to the side wall 118 is released by retracting the locking pin 22b into the locking member main body 22a.
[0054]
Subsequently, when the stopper holding member 20 is rotated counterclockwise around the support shaft 25, the stay 21 is changed to the lower position as shown in FIGS. 2 and 4, and the stopper 30 is turned sideways. The posture is changed to the posture. In this state, the gap between the stay 21 and the lower edge of the rear cover body 117b is large, and the hand can be easily inserted into the adjustment screw installation space V from this wide gap. In addition, the operability of the adjusting screw 67 is significantly improved as compared with the related art, so that the position setting operation of the paper contact surface 64a by operating the adjusting screw 67 can be performed quickly.
[0055]
As described in detail above, the paper transport stop mechanism 10 according to the present invention is configured to sequentially feed sheets fed from a paper feeder to a printing press body after positioning the sheets via a feeder board. The stay 21 for supporting the stopper 30 erected over the entire width of the feeder board 120 includes an upper position where the stopper 30 allows the feeding of the sheet P, and a position of the register device 60. Since the position can be changed between a lower position where a sufficient clearance for operating the adjusting screw 67 can be secured, the stopper 30 is placed in a state where the stay 21 is in the upper position during normal normal operation. While the feeding of the sheet P is allowed, when the sheet feeding state of the sheet P becomes abnormal, the movement preventing disk 33 of the stopper 30 is lowered. The original function of the paper transport stop mechanism 10 is that the sheet P is stopped and the sheet P can be prevented from being fed toward the printing press body until a predetermined restoration process is completed. it can.
[0056]
On the other hand, when operating the adjusting screw 67 of the register device 60 to adjust the positioning position of the sheet P, the stay 21 positioned at the upper position is rotated around the support shaft 25 to be positioned at the lower position. Just fine. By doing so, a wide gap for operating the adjusting screw 67 is ensured, so that it is possible to easily insert a hand through the gap toward the adjusting screw 67 of the register device 60, and thereby the sheet The positioning position of the sheet P can be quickly adjusted, which can contribute to the efficiency of the printing operation.
[0057]
In addition, since the paper feed device 101 and the printing press main body cannot be continuously driven by setting the posture of the stopper 30 to the horizontal posture, the paper is fed in a state where the stopper 30 is set to the horizontal posture. Since the continuous driving of the apparatus 101 and the printing press main body 110 is stopped, the printing process is performed on the sequentially fed sheets P while the stopper 30 cannot prevent the abnormal supply state of the sheets P. It is possible to reliably prevent the inconvenience of being performed.
[0058]
Further, the paper passage sensor 50 provided on the feeder board 120 for detecting that the sheet P has passed at a predetermined timing is shared for detecting the state in which the stopper 30 is set in the horizontal position. In addition, it is not necessary to provide a separate sensor for detecting that the stopper 30 is in the horizontal position, which can contribute to a reduction in component costs.
[0059]
The present invention is not limited to the above embodiments, but also includes the following contents.
[0060]
(1) In the above embodiment, the steady position of the stay 21 according to the present invention is the upper position, and the space securing position is the lower position. However, in the present invention, the steady position of the stay 21 is the upper position. However, the space securing position is not limited to the lower position, and may be changed according to the type and situation of the printing press.
[0061]
(2) In the above embodiment, the stopper 30 is configured to prevent the movement of the sheet P toward the printing press main body 110 at the time of occurrence of an abnormality by projecting the movement preventing disk 33 by air pressure. However, the present invention is not limited to preventing the movement of the sheet P by the stopper 30, and various types of such as stopping the movement of the sheet P by pressing the sheet P with a mechanical link structure, for example. A method may be adopted.
[0062]
【The invention's effect】
According to the paper transport stop mechanism of the printing press of the present invention, when the supply state of the sheet is abnormal, the entire width of the feeder board is supported so as to support a stopper that prevents the sheet from being fed into the printing press body. A stay is provided between the stationary position where the stopper allows the feeding of the sheet and a space securing position where a space for operating the operation member can be secured. When the operating member of the register device is operated in order to adjust the positioning position of the sheet, the stay located at the steady position is located at the space securing position. The space for operating the sheet is secured, so that it is possible to easily reach the operating member of the register device from this space, thereby adjusting the positioning position of the sheet. Easily and quickly can be carried out, by extension can contribute to the efficiency of printing work.
[0063]
On the other hand, when operating the adjusting operation member of the register device to adjust the positioning position of the sheet, the stay located at the steady position may be located at the space securing position. In this way, a space for operating the operating member is ensured, so that it is possible to easily insert a hand from this space toward the operating member of the register device, thereby positioning the sheet. The position can be adjusted quickly, which can contribute to the efficiency of the printing operation.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating an embodiment of a paper transport stop mechanism of a printing press according to the present invention, in which a stay is positioned at an upper position.
FIG. 2 is a perspective view showing an embodiment of a paper transport stop mechanism of the printing press according to the present invention, and shows a state in which a stay is located at a lower position.
FIG. 3 is an explanatory diagram of a side view of the paper transport stop mechanism shown in FIG. 1;
FIG. 4 is a side view of the paper transport stop mechanism shown in FIG. 2;
FIG. 5 is a front view showing an embodiment of the register device 60 as viewed from the upstream side.
FIG. 6 is an explanatory diagram for explaining a conventional paper transport stop mechanism.
[Explanation of symbols]
10 Paper transport stop mechanism 20 Stopper holding member
21 Stay 22 Locking member
22a Locking member body 22b Locking pin
22c Operation piece 22d Inclined long hole
22e engagement projection 23 connection arm
23a inverted L-shaped part 23b arm body
24 Bracket 24a Bracket body
24b connecting piece 24c connecting bolt
25 Support shaft 30 Stopper
31 Cylinder part 31a Cylinder
31b Air inlet 32 Piston rod
32a Piston 33 Movement prevention disk
40 Sensor bracket 41 Connection piece
42 Bracket body 42a Connecting shaft
43 Detected piece 43a Detected piece
50 Paper passage sensor 60 Register
61 Rotation axis 62 Base block
63 cylindrical body 63a inclined groove
64 Casing block 64a Paper contact surface
65 Movable block 65a Cam
65b Air suction hole 66 Paper receiving block
67 adjusting screw 100 printing machine
101 paper feeder 102 paper feed table
103 Vacuum port 104 Air injection nozzle
110 Printer body 111 Roller group
112 Plate cylinder 113 Rubber cylinder
114 Impression cylinder 115 Feed cylinder
116 Control device 117 Cover
117a Lower cover body 117b Rear cover body
118 Side wall 118a Lock hole
118b Retaining projection 120 Feeder board
121 Table 121a Detection hole
122 roller 123 rubber belt
124 frame 130 register
131 Front support 132 Side edge support
133 block 134 adjustment screw
140 Stopper 141 Stay
150 sensor V adjustment screw installation space
P sheet P1 sheet bundle

Claims (3)

A paper transport stop mechanism for a printing press configured to sequentially feed sheets fed from a paper feeder to a printing press main body after positioning via a feeder board, wherein the downstream end of the feeder board and a printing press are provided. A register device provided with an operating member for adjusting the positioning position of the sheet from the upstream side is interposed between the upstream end of the main body and the supply state of the sheet at a position above the downstream end of the feeder board. A stopper for preventing the sheet from being fed into the printing press body when an abnormality occurs, and a stay erected over the entire width of the feeder board so as to support the stopper, wherein the stay is a printing press. Characterized in that the position can be changed between a steady position, which is located in a continuous drive state, and a space securing position capable of securing a space for operating the operation member. Stop mechanism. The stopper is set to a vertical position in which the stay can be prevented from being fed while the stay is set to the steady position, while the stopper is set to a horizontal position in a state where the stay is set to the space securing position. 2. The paper for a printing press according to claim 1, wherein the paper feeding device and the printing press main body cannot be driven continuously when the stopper is set to the horizontal posture. Transport stop mechanism. The feeder board is provided with a paper passage sensor that detects that a sheet has passed at a predetermined timing, and the paper passage sensor is used for detecting a state in which the stopper is set in the horizontal position. The paper transport stopping mechanism of a printing press according to claim 1 or 2.

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