JP2008254434A - Printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer which can improve printing quality by suppressing a so-called oblique image by accurately positioning a sheet. <P>SOLUTION: The printer comprises a front locator part 3 for positioning the vertical direction of the sheet P by attaching to the front end of the sheet P conveyed on a paper supply plate, and an upper locator part 4 for regulating the upward movement of the front end part of the sheet P positioned at the front locator part 3. The front locator part 3 is provided at the front locator shaft 7 along the width direction of the printer. The upper locator part 4 is provided at the upper locator shaft 13 along the width direction of the printer at the different shaft from the front locator shaft 7 and installed turnably about the axis C4 of the upper locator shaft 13, and further includes a slope regulating means 60 for integrally slope-regulating the slope to the conveying direction of both the axes C1 and C4 of the front locator shaft 7 and the upper locator shaft 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a printing press.

  Conventionally, a front abutting portion for positioning the sheet in the vertical direction by contacting the front end of the sheet conveyed on the sheet feeding plate, and a front end portion of the sheet positioned by the front abutting portion. 2. Description of the Related Art There is known a printing machine that includes an upper pad that restricts upward movement.

Such a printing machine regulates the upward movement of the front end portion of the sheet transported on the sheet feeding plate at the top contact portion and positions the top and bottom direction at the front contact portion, and then the width direction of the sheet paper. By positioning the sheet, the sheet can be fed downstream with the sheet positioned in a desired posture (see Patent Document 1 below).
Japanese Utility Model Publication No. 6-42176

  However, when the sheet to be transported is in a state where the front end is inclined with respect to the transport direction, for example, the angle between the front end and the side end is not a substantially right angle, The sheet may not be positioned in a desired posture, and may be fed downstream in a misaligned state. Then, the print image is inclined with respect to the sheet (a so-called oblique image), and the print quality may be deteriorated.

  Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a printing machine capable of improving print quality by accurately positioning a sheet and suppressing so-called oblique images.

  The present invention has been made to solve the above problems, and the printing press according to the present invention abuts against the front end of a sheet conveyed on a sheet feeding plate to position the sheet in the vertical direction. A front abutting portion, and an upper abutting portion for restricting upward movement of the front end portion of the sheet positioned on the front abutting portion, the front abutting portion being a front abutting shaft along the width direction of the printing press The upper abutment portion is provided on an upper abutment shaft that is different from the anterior abutment shaft and extends in the width direction of the printing press. It is configured to be rotatable around the axis of the shaft, and is provided with an inclination adjusting means for integrally adjusting the inclination of both the front abutting shaft and the upper abutting shaft with respect to the conveying direction.

  In the printing machine configured as described above, since both the front abutment shaft and the upper abutment axis can be adjusted by the inclination adjustment means, the front end of the sheet to be conveyed is inclined with respect to the conveyance direction. In order to match the inclination of the axes of both axes with the inclination of the front edge of the sheet, for example, the inclination of the axes of both axes with respect to the conveyance direction is inclined to the front edge of the conveyed sheet. And can be adjusted so as to have substantially the same inclination.

  Here, the inclination adjusting means is configured not to individually adjust the inclination of each of the front contact axis and the upper contact axis, but to adjust the inclination integrally, and therefore, between the axes of both axes. While maintaining the tilt relationship, the tilt of both axes can be adjusted collectively.

  In this way, by adjusting the inclination of the axes of the two axes with respect to the transport direction so as to match the inclination of the front end of the sheet in a batch while maintaining the inclination relationship between the two axes, The upward movement can be uniformly regulated by the upper abutting portion, and the front end of the upper abutting portion can be uniformly brought into contact with the front abutting portion, so that the vertical direction of the sheet can be accurately positioned.

  In particular, the inclination adjusting means includes a support portion that integrally supports one end portions of both the front contact shaft and the upper contact shaft, and an inclination drive portion for moving the support portion in the transport direction. Is preferred. In this case, by moving the support portion in the transport direction by the tilt driving portion, the end portions of both the front contact shaft and the upper contact shaft that are integrally supported by the support portion are collectively moved in the transport direction. Thus, the inclination of the axes of both axes with respect to the conveying direction can be easily and reliably collectively adjusted.

  Moreover, it is preferable that the said support part is comprised so that it may slide to the linear form along a conveyance direction by the said inclination drive means. According to such a configuration, one end of both the front abutment shaft and the upper abutment shaft that are integrally supported by the support portion can be moved in the conveyance direction only by a linear slide movement along the conveyance direction. The tilt can be adjusted.

  The support portion is formed in a vertical direction and is configured to be pivotable in the transport direction around the lower end portion thereof, and so as to protrude downstream from the upper end portion of the first arm in the transport direction. A second arm that is pivotally supported by the upper end and configured to be rotatable in the vertical direction. The front abutment shaft is pivotally supported by the upper end of the first arm, and the upper abutment shaft is the second arm. It is preferable that the shaft is supported at the downstream end in the transport direction.

  In this way, by rotating the first arm in the transport direction, it is possible to adjust the inclination of the front contact shaft that is pivotally supported at the upper end portion thereof, and at the same time, the pivot is supported at the upper end portion of the first arm. The tilt of the upper abutment shaft can be adjusted via the second arm. That is, by rotating the first arm in the transport direction, it is possible to simultaneously adjust the inclination of both the front contact shaft and the upper contact shaft at the same time.

  In addition, by rotating the second arm in the vertical direction, the upper abutment shaft that is pivotally supported by the second arm is displaced in the vertical direction, and the vertical position of the upper pad portion is displaced. It is possible to widen or narrow the gap between the two. Therefore, the gap between the sheet feeding plate and the upper cover can be adjusted according to the thickness of the conveyed sheet, and the vertical movement of the front end of the sheet can be more reliably regulated. .

  Furthermore, it is preferable that the rotation center of the second arm coincides with the axis of the front abutment shaft, and the second arm rotates about the axis of the front abutment axis. The distance to the axis of the is kept constant. If it does so, the positional relationship of a front pad part and an upper pad part will be maintained with a sufficient precision, and positioning of a sheet can be made still more exact.

  Still further, the tilt adjusting means is paired on one end side and the other end side of both shafts such that the one end portions and the other end portions of the front contact shaft and the upper contact shaft can be independently adjusted. It is preferable to be provided.

  With such a configuration, the inclination adjustment by one inclination adjustment means and the inclination adjustment by the other inclination adjustment means can be performed independently, or both the axes are simultaneously operated by linking both inclination adjustment means. It can also be translated in the transport direction. Thus, for example, after adjusting both axes at once by one inclination adjusting means, both axes are translated in the transport direction by both inclination adjusting means, and the distance between both axes and the sheet feeding plate Can be adjusted. Therefore, more accurate sheet positioning can be performed.

  In addition, since the inclination can be adjusted by appropriately using each inclination adjusting means, the inclination adjustment work is facilitated.

  As described above, in the printing press according to the present invention, both the front abutment shaft and the upper abutment shaft are integrally adjusted by the inclination adjusting means, and the inclination of each axis with respect to the transport direction is set to the both axes. The sheet can be accurately adjusted to match the inclination of the front edge of the sheet while maintaining the inclination relationship between the sheets, so that the sheet conveyed on the sheet feeding plate can be accurately positioned and so-called oblique images are suppressed. As a result, the print quality can be improved.

Hereinafter, an embodiment of a printing press according to the present invention will be described with reference to the drawings.
1 and 2 show a paper feeding unit 1 of a printing press according to this embodiment. The sheet feeding unit 1 includes a feeder board that conveys the sheets P sequentially sent out from a lifting table (not shown) to the downstream side, and an opening that is provided on the downstream side of the feeder board and on which the sheet P is conveyed. A plate 2, a front abutting portion 3 for positioning the sheet P in contact with a front end of the sheet P conveyed on the mouth plate 2, and a sheet paper positioned by the front abutting portion 3 The upper end portion 4 that restricts the upward movement of the front end portion of P, and the front end of the sheet P that is positioned by the front end portion 3 and whose upper end portion is restricted from moving upward by the upper end portion 4. And a swinging claw 5 for picking up the sheet and feeding the sheet P to the sheet feed drum D of the printing unit. In the present embodiment, the feeder board and the mouth plate 2 form a sheet feeding plate.

  The sheet feeding unit 1 conveys the sheet P sent out one by one to the downstream side via the feeder board and the mouth plate 2 (conveying direction X), and serves as a downstream end of the sheet feeding plate. At the downstream end of the plate 2, the front end of the sheet P is regulated by the upper pad 4 so that it does not move upward, and the top / bottom direction (conveying direction) is positioned by the front pad 3, and then the sheet The width direction of P (the direction perpendicular to the top-to-bottom direction) is positioned by a lateral support portion (not shown). Then, by holding the front end portion of the sheet P in which the vertical direction and the width direction are positioned by the gripper 51 provided on the swing claw 5, the sheet P is transferred to the sheet feeding drum D, The sheet P is fed to the printing unit one by one.

  A feeder board (not shown) is for carrying sheets P, which are fed one by one from the lifting table, one by one on the upper surface and transporting them downstream, so that the upper surface is inclined downward toward the downstream side. Is formed.

  The mouth plate 2 carries the sheet P on the conveying surface 21 which is the upper surface thereof and conveys the sheet P downstream in the conveying direction. The mouth plate 2 is a horizontally long plate-like body extending between the left and right frames of the printing press, and is configured such that the upper surface (conveying surface 21) is inclined downward toward the downstream side. The conveying surface 21 and the upper surface of the feeder board have substantially the same inclination angle and are arranged to be substantially flush with each other.

  The front abutting section 3 contacts the front end of the sheet P conveyed on the sheet feeding plate and positions the sheet P. As shown in FIGS. It is configured to reciprocate between a positioning position F1 that protrudes upward from the sheet feeding plate to be positioned, and a front landing position F2 that is located below the sheet feeding plate. Specifically, as shown in FIG. 2, the front abutting portion 3 is disposed on the downstream side of the mouth plate 2, and is a rotation center (hereinafter referred to as the front portion) disposed below the upstream end portion of the mouth plate 2. It is configured to be rotatable in the transport direction around the rotation center C1). The front abutting portion 3 is positioned between a positioning position F1 that is above the conveying surface 21 and a front contact retracting position F2 that is downstream in the conveying direction from the positioning position F1 and below the conveying surface 21. It is comprised so that it may reciprocate by rotating.

  More specifically, as shown in FIGS. 2 and 3, the front abutting portion 3 has a front end portion of the front abutting arm 6 formed such that the front end portion 6A is located downstream of the base end portion 6B in the transport direction. 6A. The front contact arm 6 is formed by bending a vertically long plate-like body at an intermediate portion in the vertical direction so that the distal end portion 6A as the upper end portion is downstream of the base end portion 6B as the lower end portion. The front abutting portion 3 is formed by extending the tip portion 6A upward in a bowl shape.

  The front abutting portion 3 is configured by integrally forming a pair of left and right protruding pieces 31 protruding upward and a connecting piece 32 extending between the pair of protruding pieces 31. The surface on the upstream side in the transport direction of the projecting piece 31 and the surface on the upstream side in the transport direction of the connecting piece 32 are flush with each other and form the contact surface 33 of the front contact portion 3. When the front end of the sheet P to be conveyed comes into contact with the contact surface 33, the posture of the sheet P is adjusted in the vertical direction.

  In the present embodiment, a plurality of types of front abutting portions 3 are prepared. For example, a configuration including any one of a pair of projecting pieces 31 and a connecting piece 32 continuous to the projecting pieces 31 is prepared. Has been. It is also possible to form the front contact portion 3 without providing the connecting piece 32.

  Thus, the front abutting arm 6 in which the front abutting portion 3 is formed at the distal end portion 6A thereof has an axis C1 in the direction in which the distal end portion 6A is on the downstream side and the upper side in the transport direction with respect to the base end portion 6B. A base end portion 6B is fixed to a front abutting shaft 7 that is rotatable around.

  Here, the front contact shaft 7 is an axis along the width direction (left-right direction) of the printing press, and is disposed below the upstream end of the mouth plate 2 so as to be rotatable around the axis C1. Both ends are supported. Therefore, the front contact shaft 7 is rotatable in the transport direction.

  Further, a plurality of front contact arms 6 are arranged along the axis C1 of the front contact shaft 7, and the base end portion 6B of each front contact arm 6 is fixed to the front contact shaft 7 so as to be in the same direction. Has been. In the present embodiment, four front abutting portions 3 including a pair of projecting pieces 31 are disposed in a substantially central region in the direction of the axis C1 of the front abutting shaft 7, and either one of the left and right end portions is provided in the left and right regions. Three front abutting portions 3 each including the projecting piece 31 are provided, and thus a total of ten front abutting portions 3 are provided. In addition, the front contact part 3 may be 10 or more, 10 or less, or a single arrangement.

  As described above, since the plurality of front abutment arms 6 are fixedly attached to the front abutment shaft 7 that rotates around the axis C 1, all the front contact portions 3 are simultaneously and the same as the front abutment shaft 7 rotates. Rotate in orbit. For example, when the front abutment shaft 7 rotates downstream (counterclockwise in FIG. 2), all the front contact portions 3 rotate downstream, and the front abutment shaft 7 moves upstream (clockwise in FIG. 2). ), All the front abutting portions 3 are rotated upstream. That is, the axis C <b> 1 of the front contact shaft 7 is the front contact rotation center C <b> 1 of the front contact portion 3.

  The rotation of the front contact portion 3 is performed by transmitting the rotation of the front contact cam 9 fixed to the cam shaft 8 that rotates around the axis C2 through the front contact transmission means 10. Specifically, the cam shaft 8 is a drive shaft along the width direction of the printing press, and is disposed below and upstream of the mouth plate 2. In the present embodiment, the axis C2 of the cam shaft 8 is disposed on the upstream side and the lower side of the axis C1 of the front contact shaft 7. Both ends of the cam shaft 8 are supported so as to be rotationally driven around the axis C2 by a drive source (not shown).

  The front contact cam 9 is a so-called planar cam having a disk shape, and a peripheral shape is formed by a front contact avoidance corresponding portion 91 and a position determination corresponding portion 92. Specifically, the front contact cam 9 is configured such that a position determination corresponding portion 92 extends radially outward with respect to the front contact avoidance corresponding portion 91. Accordingly, the distance from the center of the front contact cam 9 to the peripheral surface (the radius of the front contact cam 9) is longer in the position determination corresponding portion 92 than in the front contact avoidance corresponding portion 91. Such a front contact cam 9 is fixed to the camshaft 8 so that the cam center coincides with the axis C2 of the camshaft 8 and rotates together with the camshaft 8.

  The front contact transmitting means 10 transmits a rotational force to the front contact shaft 7 by operating following the rotation of the front contact cam 9, and a front contact shaft arm 101 provided on the front contact shaft 7, This is a front contact link mechanism formed by a rotation transmission portion 102 that swings following the shape of the front contact cam 9, and a front contact link 103 that connects the front contact shaft arm 101 and the rotation transmission portion 102. The front contact shaft arm 101 is provided so as to protrude from the front contact shaft 7 to the upstream side in the transport direction, and is fixed to the front contact shaft 7 so as to rotate together with the front contact shaft 7. The front contact link 103 is a link formed in the vertical direction. One end (upper end) of the front contact link 103 is rotatably connected to the upstream end of the front contact shaft arm 101, and the other end (lower end). Part) is rotatably connected to the rotation transmission part 102.

  The rotation transmitting unit 102 is provided with a link arm 1022 projecting toward a downstream side, a cam arm 1023 projecting upward, and a downward projecting from a base unit 1021 that is rotatably provided. And an urging arm 1024. The rotation transmitting unit 102 is provided on the lower side of the cam shaft 8 so as to be rotatable in the transport direction. Specifically, the rotation transmission unit 102 is provided such that the rotation center (hereinafter referred to as a transmission rotation center C3) is set to the base 1021, and around the transmission rotation center C3 in the transport direction. It is configured to rotate. The transmission rotation center C3 of the rotation transmission unit 102 is disposed on the lower side and the downstream side with respect to the axis C2 of the cam shaft 8, and is further on the lower side than the front contact rotation center C1 of the front contact unit 3. And it is arrange | positioned upstream.

  The other end of the front contact link 103 is connected to the link arm 1022 at its downstream end. That is, the front contact link 103 connects the front contact shaft arm 101 and the link arm 1022. A cam follower CF is provided at the upper end of the cam arm 1023, and the circumferential surface of the cam follower CF is in contact with the circumferential surface of the front cam 9. A spring serving as a biasing means 11 that biases the biasing arm 1024 downstream is connected to the lower end of the biasing arm 1024. Accordingly, since the urging arm 1024 is urged to the downstream side by the spring in the rotation transmitting unit 102, the cam arm 1023 is urged to the upstream side around the transmission rotation center C3 of the rotation transmitting unit 102. As a result, the circumferential surface of the cam follower CF provided on the cam arm 1023 is pressed against the circumferential surface of the front contact cam 9. Accordingly, the rotation transmitting unit 102 swings in the transport direction following the rotation of the front contact cam 9.

  Thus, since the front contact portion 3 is connected to the front contact cam 9 provided on the cam shaft 8 via the front contact link mechanism as the front contact transmission means 10, the front contact cam 9 Following the rotation from the front hitting support portion 91 to the positioning support portion 92, the front hitting retract position F2 moves from the positioning position F1 to the positioning position F1, and from the positioning support portion 92 of the front hit cam 9 to the front hitting stop correspondence portion 91. Following the rotation, the position moves from the positioning position F1 to the front landing position F2.

  Specifically, in a state in which the cam follower CF is in contact with the front contact avoidance corresponding portion 91 of the front contact cam 9, the front contact portion 3 is located at the front contact retract position F2. At this time, the front contact part 3 is located below the conveying surface 21 of the mouth plate 2 (see FIG. 3). That is, the front contact portion 3 does not protrude upward from the transport surface 21 at the front contact retract position F2.

  When the front contact cam 9 is rotated by the rotational drive of the cam shaft 8 and the contact between the front contact cam 9 and the cam follower CF is switched from the front contact avoidance corresponding portion 91 to the position determination corresponding portion 92, the cam arm 1023 is moved to the downstream side. The link arm 1022 is rotated downward and the front contact link 103 is moved downward. Then, the front contact shaft arm 101 rotates downward and the front contact shaft 7 rotates upstream (clockwise in FIG. 2). As a result, the front contact portion 3 moves upstream from the front contact retract position F2 in the transport direction. To move to the positioning position F1 (see FIG. 5).

  At this time, the front contact portion 3 is in a state of protruding from the conveying surface 21 of the mouth plate 2. Specifically, when the front abutting portion 3 is located at the positioning position F <b> 1, the contact surface 33 of the front abutting portion 3 with which the front end of the sheet P abuts is at the downstream end of the transport surface 21. It protrudes upward so as to be substantially perpendicular to the transport surface 21.

  In the state where the cam follower CF is in contact with the position determination corresponding portion 92, the front contact portion 3 is located at the positioning position F1. When the contact between the front contact cam 9 and the cam follower CF is switched from the position determination corresponding portion 92 to the front contact avoidance corresponding portion 91, the cam arm 1023 rotates upstream and the link arm 1022 rotates upward. The front link 103 moves upward. As a result, the front contact shaft arm 101 rotates upward and the front contact shaft 7 rotates downstream (counterclockwise in FIG. 2). As a result, the front contact portion 3 moves from the positioning position F1 to the downstream side in the transport direction. It rotates and moves to the front landing position F2 (see FIG. 3). In this way, the front contact portion 3 is configured to reciprocately rotate upstream and downstream in the conveyance direction via the front contact transmission means 10 that operates following the front contact cam 9 that rotates in one direction. Therefore, it is possible to easily cope with the high speed simply by rotating the front contact cam 9 at a high speed.

  The upper pad 4 is located above the front end of the sheet P positioned on the front pad 3 and regulates the upward movement of the front end of the sheet P. A restriction position U1 that is close to the paper feed plate to restrict the upward movement of the front end, a standby position U2 that is farther upward from the paper feed plate than the restriction position U1, and an upper catching position that is located below the paper feed plate It is configured to be movable between U3.

  Specifically, as shown in FIG. 2, the upper pad portion 4 is disposed on the downstream side of the mouth plate 2, and is located upstream and below the downstream end portion of the mouth plate 2 (in this embodiment, It is configured to be rotatable in the conveyance direction around a rotation center (hereinafter, referred to as an upper rotation center C4) arranged on the lower side of the central portion of the mouth plate 2 in the conveyance direction.

  That is, as shown in FIGS. 3 to 6, the upper pad 4 rotates between the standby position U <b> 2 and the upper receiving position U <b> 3 to reciprocate, and moves from the standby position U <b> 2 to the upper position receiving position U <b> 3. It is comprised so that it may become the control position U1 on the way. In other words, the upper pad 4 is turned to the upstream side in the conveying direction around the upper contact rotation center C4 from the upper contact receiving position U3 on the lower side of the mouth plate 2, and is separated from the mouth plate 2 by a predetermined distance upward. Moved to the position U2, moved from the standby position U2 to the downstream side in the transport direction around the upper rotation center C4, and moved to the regulation position U1 closer to the mouth plate 2 than the standby position U2, As it is, it is configured to turn to the downstream side in the transport direction and move to the upper receiving position U3.

  The upper abutting portion 4 is formed at the distal end portion 121 of the upper contact arm 12 formed so that the distal end portion 121 is on the downstream side in the transport direction from the proximal end portion 122. The upper contact arm 12 is formed by bending a base end portion 122 which is a lower end portion of a vertically long plate-like body to the upstream side in the transport direction and a distal end portion 121 which is an upper end portion to be bent downstream in the transport direction. The upper abutting portion 4 is formed by extending upward from the tip portion 121 toward the upstream side in the transport direction.

  Specifically, the upper abutting portion 4 is formed by extending and extending the distal end portion 121 of the upper contact arm 12 to the upstream side so as to be substantially V-shaped or substantially U-shaped. It is formed in such a direction as to be farther from the upper arm 12. Further, the upper pad part 4 has a flat regulation surface 41 on the lower surface, and the regulation surface 41 regulates the upward movement of the front end portion of the sheet P. The tip of the upper pad 4 is chamfered by a guide surface 42 extending from the upstream side and the upper side to the downstream side and the lower side. That is, the guide surface 42 that is higher on the upstream side is continuous with the upstream end of the regulation surface 41. A roller 43 is provided at the base end portion (downstream end portion) of the upper abutting portion 4 so as to be rotatable in the transport direction.

  As described above, the upper abutting arm 12 having the upper abutting portion 4 formed at the distal end portion 121 thereof has a direction in which the distal end portion 121 is on the downstream side and the upper side in the transport direction with respect to the base end portion 122, and its axis C4 is around. A base end 122 is fixed to the upper abutment shaft 13 that is freely rotatable.

  Here, the upper abutment shaft 13 is an axis along the width direction of the printing press, and is disposed on the lower side of the central portion in the conveyance direction of the mouth plate 2 and supported at both ends so as to be rotatable around the axis C4. Has been. That is, the upper contact shaft 13 and the front contact shaft 7 are both parallel shafts separated by a predetermined distance along the surface direction of the transport surface 21, and the upper contact shaft 13 is downstream in the transport direction and the front contact shaft 7 is upstream in the transport direction. It is arranged to be on the side. The axis C4 of the upper abutment shaft 13 is disposed on the upstream side of a plane passing through the downstream end of the mouth plate 2 in the transport direction and perpendicular to the transport surface 21 (hereinafter referred to as a transport downstream end surface Y).

  In the present embodiment, a plane passing through both the axis C4 of the upper abutment shaft 13 and the axis C1 of the front abutment shaft 7 (hereinafter referred to as an axial plane Z) is a plane parallel to the conveying surface 21 of the mouth plate 2. . The axis C4 of the upper abutment shaft 13 is set downstream and above the axis C2 of the camshaft 8.

  Further, as shown in FIG. 1, a plurality of upper contact arms 12 are arranged along the axis C4 of the upper contact shaft 13, and all the upper contact portions 4 formed at the distal end portion 121 of each upper contact arm 12 are When the upper abutment shaft 13 rotates downstream (counterclockwise in FIG. 2), the upper abutment shaft 13 rotates downstream, and when the upper abutment shaft 13 rotates upstream (clockwise in FIG. 2), the upper abutment shaft 13 rotates upstream. That is, the axis C4 of the upper abutting shaft 13 is the upper abutting rotation center C4 of the upper abutting portion 4. In the present embodiment, the turning radius of the upper abutting portion 4 is smaller than the turning radius of the front abutting portion 3. Further, a total of ten upper abutting portions 4 are provided corresponding to the arrangement positions of the front abutting portions 3. The upper abutting portion 4 may be provided in a number of 10 or more, 10 or less, or a single one, or may be arranged differently from the arrangement of the front abutting portion 3.

  The upper abutment portion 4 is rotated by transmitting the rotation of the upper contact cam 14 fixed to the cam shaft 8 driven to rotate about the axis C4 through the upper contact transmission means 15. The upper contact cam 14 is a disk-shaped so-called flat cam, and the peripheral surface shape is formed by the upper contact avoidance corresponding portion 141, the standby corresponding portion 142, and the restriction corresponding portion 143. Specifically, the upper contact cam 14 is formed such that the restriction corresponding portion 143 extends radially outward from the upper contact avoidance corresponding portion 141, and the standby corresponding portion 142 extends radially outward from the restriction corresponding portion 143. It is configured by being formed.

  Therefore, the distance from the cam center to the peripheral surface of the upper contact cam 14 (the radius of the upper contact cam 14) is longer than the upper contact avoidance corresponding portion 141 in the restriction corresponding portion 143, and the restriction corresponding portion 143 in the standby corresponding portion 142. Longer than. The upper contact cam 14 is fixed to the camshaft 8 so that the cam center coincides with the axis C2 of the camshaft 8 and rotates together with the camshaft 8. Note that the radius of the upper contact cam 14 in the upper contact avoidance corresponding portion 141 is smaller than the radius of the front contact cam 9 corresponding to the front contact avoidance corresponding portion 91, and the radius of the upper contact cam 14 in the restriction corresponding portion 143 is the position of the front contact cam 9. It is larger than the radius in the decision corresponding part 92.

  Thus, the upper contact cam 14 for rotating the upper contact portion 4 is fixed to the cam shaft 8 to which the front contact cam 9 for rotating the front contact portion 3 is fixed. 14 and the front contact cam 9 are arranged side by side on one axis C2, and rotate integrally around the axis C2 of the cam shaft 8.

  The upper contact transmission means 15 transmits the rotational force to the upper contact shaft 13 by operating following the rotation of the upper contact cam 14, and the shape of the upper contact shaft arm 151 provided on the upper contact shaft 13 and the upper contact cam 14. This is an upper contact link mechanism formed by a rotation transmission portion 102 that swings following the upper contact shaft arm 151 and an upper contact link 152 that connects the upper transmission shaft arm 151 and the rotation transmission portion 102. In addition, since the rotation transmission part 102 with which an upper application link mechanism is provided is the same shape as the rotation transmission part 102 with which an advance application link mechanism is provided, the description is abbreviate | omitted as attaching | subjecting the same code | symbol. The upper contact shaft arm 151 is provided so as to protrude from the upper contact shaft 13 to the upstream side in the transport direction (in the present embodiment, the upstream side and the lower side), and is fixed to the upper contact shaft 13 so as to rotate together with the upper contact shaft 13. Yes.

  The upper contact link 152 is a link formed along the vertical direction, and one end portion (upper end portion) thereof is rotatably connected to the upstream end portion of the upper contact shaft arm 151 and the other end portion (lower end portion). Is rotatably connected to the rotation transmitting unit 102. Specifically, the other end of the upper abutment link 152 is connected to the downstream end of the link arm 1022 of the rotation transmitting unit 102. That is, the upper contact link 152 connects the upper contact shaft arm 151 and the link arm 1022.

  The cam follower CF provided at the upper end portion of the cam arm 1023 of the rotation transmitting portion 102 is configured such that its peripheral surface comes into contact with the peripheral surface of the upper cam 14. In addition, a spring serving as a biasing means 11 that biases the downstream side is connected to a lower end portion of the biasing arm 1024 of the rotation transmitting unit 102. Accordingly, since the urging arm 1024 of the rotation transmitting portion 102 is urged downstream by the spring, the cam arm 1023 is urged upstream around the transmission rotation center C3 of the rotation transmitting portion 102. Thus, the circumferential surface of the cam follower CF provided on the cam arm 1023 is pressed against the circumferential surface of the upper contact cam 14. Accordingly, the rotation transmission unit 102 swings in the transport direction following the rotation of the upper contact cam 14.

  Thus, the upper contact portion 4 is connected to the upper contact cam 14 provided on the cam shaft 8 via the upper contact link mechanism as the upper contact transmission means 15. 141 from the standby corresponding position U3 to the standby position U2 following the rotation from the standby corresponding part 142 to the standby corresponding part 142, and the standby corresponding to the rotation from the standby corresponding part 142 to the regulation corresponding part 143 of the superior cam 14 It moves from the position U2 to the restriction position U1, and further follows the rotation of the upper contact cam 14 from the restriction corresponding part 143 to the upper contact avoidance corresponding part 141, and then moves from the restricting position U1 to the upper equivalent avoidance position U3.

  Specifically, in the state where the cam follower CF is in contact with the upper contact avoidance corresponding portion 141 of the upper contact cam 14, the upper contact portion 4 is located at the upper contact avoidance position U3 (see FIG. 3). At this time, the upper pad 4 is located downstream of the mouth plate 2 and below the transport surface 21. Further, the roller 43 provided at the base end portion of the upper abutting portion 4 is also located below the transport surface 21. That is, the entire upper contact arm 12 is retracted below the conveying surface 21 at the upper contact retracting position U3.

  When the upper contact cam 14 is rotated by the rotational drive of the cam shaft 8 and the contact between the upper contact cam 14 and the cam follower CF is switched from the upper contact avoidance corresponding portion 141 to the standby corresponding portion 142, the cam arm 1023 is rotated downstream. At the same time, the link arm 1022 rotates downward, and the upper contact link 152 moves downward. As a result, the upper contact shaft arm 151 rotates downward and the upper contact shaft 13 rotates upstream (clockwise in FIG. 2). As a result, the upper contact portion 4 rotates from the upper contact retracting position U3 to the upstream in the transport direction. Then, it moves to the standby position U2 (see FIG. 5).

  In the standby position U <b> 2, the upper pad 4 is located at a predetermined distance from the upper side of the mouth plate 2. Specifically, of the upper abutment arm 12, the upper contact portion 4 has a regulating surface 41, which is a lower surface thereof, on the upper side in the normal direction of the transport surface 21 from the downstream end of the transport surface 21 (vertical and upward to the transport surface 21. ) And a predetermined gap T is formed between the conveying surface 21 (see FIG. 10), and other portions are located downstream of the mouth plate 2 or from the conveying surface 21. Is also located on the lower side.

  Here, the predetermined gap T means a gap T in which the front end of the sheet P whose front end is moving upward can enter, and the front end of the conveyed sheet P The gap T is slightly wider than the height at which the portion moves upward. The gap T can be set as appropriate depending on the stiffness of the sheet P, the paper thickness, and the like, and can be set to about 5 mm, for example.

  When the cam follower CF is in contact with the standby corresponding portion 142 of the upper cam 14, the upper abutting portion 4 is in a stopped state while being positioned at the standby position U2. When the contact between the upper contact cam 14 and the cam follower CF is switched from the standby corresponding portion 142 to the restriction corresponding portion 143, the cam arm 1023 rotates to the upstream side and the link arm 1022 rotates to the upper side. 152 moves upward. Then, the upper abutment shaft arm 151 rotates upward and the upper abutment shaft 13 rotates downstream (counterclockwise in FIG. 2). As a result, the upper abutting portion 4 rotates from the standby position U2 toward the downstream side in the transport direction. It moves to the restriction position U1 (see FIG. 6).

  That is, the upper pad 4 moves from the upstream and upper standby position U2 to the downstream and lower restriction position U1. In other words, the upper abutting portion 4 is rotated downstream in the transport direction so as to narrow the gap T formed with the mouth plate 2 and moves from the standby position U2 to the restriction position U1. In the restriction position U1, the upper contact portion 4 of the upper contact arm 12 has a gap T corresponding to the thickness of the sheet P to which the gap T between the restriction surface 41 and the conveyance surface 21 is conveyed. Thus, the position is separated from the conveying surface 21 upward, and the other part is located downstream from the mouth plate 2 or below the conveying surface 21. In the present embodiment, the regulation surface 41 is arranged substantially parallel to the transport surface 21.

  At the restriction position U1, the upper pad part 4 restricts the upward movement of the front end part of the sheet P at the front end part (upstream end part) of the restriction surface 41. Specifically, when the front end portion of the sheet P to be transported is moving upward, the upper pad 4 is configured so that the restricting surface 41 is in contact with the front end portion of the sheet P and the mouth plate 2 The sheet is rotated so that the gap T between the two and the sheet P becomes narrower, and the front end portion of the sheet P is regulated so as to be along the conveying surface 21 to be a regulation position U1. Therefore, the upper pad 4 does not sandwich the front end portion of the sheet P to be conveyed between the mouth plate 2 and the front end portion of the sheet P is lifted upward from the conveyance surface 21. In this case, the front end portion is prevented from rising so that the front end portion is evenly placed on the transport surface 21.

  When the cam follower CF is in contact with the restriction corresponding portion 143, the upper pad portion 4 is located at the restriction position U1 and its rotation is stopped. When the contact between the upper contact cam 14 and the cam follower CF is switched from the restriction corresponding portion 143 to the upper contact avoidance corresponding portion 141, the cam arm 1023 rotates upstream and the link arm 1022 rotates upward, and the upper contact link 152 moves upward. As a result, the upper abutment shaft arm 151 is pivoted upward, and the upper abutment shaft 13 is rotated downstream (counterclockwise in FIG. 2). As a result, the upper abutting portion 4 is pivoted from the regulation position U1 to the downstream side in the transport direction. Then, it moves to the upper-pause saving position U3 (see FIG. 3).

  In this way, the upper abutting portion 4 does not involve the movement of the upper contact rotation center C4, and the upper contact receiving position U3, the standby position U2 and the restricting position U1 are only moved by the rotation around the upper contact rotation center C4. It moves from the standby position U3 to the standby position U2 around the upward rotation center C4, and rotates so as to return to the rotational path from the standby position U2 to the upward position E3. In the middle, it is configured to be the restriction position U1.

  Further, the upper abutting portion 4 is configured to reciprocately rotate upstream and downstream in the conveying direction via an upper contact transmission means 15 that operates following the upper cam 14 that rotates in one direction. It is possible to easily cope with the high speed simply by rotating the upper contact cam 14 at a high speed.

  As shown in FIG. 2, a swing claw 5 having a gripper 51 for holding the front end portion of the sheet feed P to feed the sheet P to the sheet feed drum D is provided between the mouth plate 2 and the sheet feed drum D. It has been. The swing claw 5 is configured to be movable between a gripping position for gripping the front end portion of the sheet P and a transfer position for delivering the gripped sheet P to the sheet feeding cylinder D. Specifically, the swing claw 5 is provided so as to be rotatable in the transport direction, and is configured to swing between the upstream gripping position and the downstream handing position. The gripper 51 provided at the front end portion approaches the vicinity of the downstream end portion of the mouth plate 2 and swings so that the gripper 51 approaches the vicinity of the paper feed drum D at the transfer position.

  The center of rotation of the swing claw 5 (hereinafter referred to as claw rotation center C5) is set on the lower side of the mouth plate 2, and is set on the lower side of the axial plane Z. Specifically, the claw rotation center C5 of the swing claw 5 is set on the transport downstream end surface Y. Accordingly, a straight line passing through the gripper 51 and the claw rotation center C5 when located at the gripping position is substantially perpendicular to the transport surface 21. Further, the turning radius of the swing claw 5 is larger than the turning radius of both the front abutting portion 3 and the upper abutting portion 4. The claw rotation center C5 of the swing claw 5 is set below and downstream of the axis C2 of the cam shaft 8.

Next, a paper feeding operation (positioning operation) in the printing press having the above configuration will be described with reference to FIGS.
When the sheet P is transported on the feeder board and the mouth plate 2, the front contact portion 3 is rotated from the front contact receiving position F2 to the positioning position F1, and the upper contact portion 4 is received from the upper contact receiving position U3. It rotates to the position U2 (from the state shown in FIG. 3 to the state shown in FIG. 5 through the state shown in FIG. 4).

  As a result, as shown in FIG. 5, the front abutting portion 3 is projected upward from the downstream end portion of the conveying surface 21, and the upper abutting portion 4 widens the gap T between the downstream end portion of the mouth plate 2. In this state, it waits for the front end portion of the conveyed sheet P to enter the gap T. Specifically, the regulation surface 41 faces the downstream end of the transport surface 21 so as to form a predetermined gap T between the regulation surface 41 and the downstream end of the transport surface 21, and the contact surface 33 It will be in the state straddling between the control surface 41 and the conveyance surface 21 so that the downstream side of T may be obstruct | occluded. Then, the front end portion of the sheet P to be conveyed enters the area surrounded by these surfaces.

  In this manner, the sheet P is awaited to be conveyed in a state where the sheet P that has been conveyed with the gap T between the upper pad 4 and the mouth plate 2 being enlarged is allowed to enter. Therefore, even if the front end portion of the conveyed sheet P is moved upward (for example, curled), the sheet P is surely placed in the gap T between the upper cover 4 and the mouth plate 2. Will enter. Further, since the guide surface 42 is formed at the distal end portion of the upper pad portion 4, even if the upwardly moved front end portion comes into contact with the guide surface 42, the front end portion is guided to the gap T side. be able to. In the state where the sheet P is awaited, the swing claw 5 is located at the transfer position.

  When the sheet P enters the gap T, the upper pad 4 rotates from the standby position U2 to the restriction position U1 (from the state shown in FIG. 5 to the state shown in FIG. 6). Note that the front abutting portion 3 remains in the positioning position F1.

  In this state, the front end portion of the regulation surface 41 and the guide surface 42 protrude from the contact surface 33 to the upstream side. The gap T between the regulation surface 41 and the conveyance surface 21 is narrow corresponding to the thickness of the sheet P to be regulated. Further, the regulation surface 41 and the transport surface 21 are substantially parallel.

  Here, when the upper pad 4 moves from the standby position U2 to the restricting position U1, the upper pad 4 is positioned at the positioning position F1 while narrowing the gap T between the upper pad 4 and the conveying surface 21. It moves so as to move backward with respect to the front abutting portion 3 so that the amount of protrusion from the front abutting portion 3 is reduced. Then, when the front end portion of the sheet P positioned on the front abutting portion 3 is moving upward, the upper abutting portion 4 moves the upper end of the sheet P that is lifted from the transport surface 21. Further, the sheet P is attracted to the downstream side and the front end is brought into contact with the contact surface 33 of the front contact portion 3 while suppressing the floating so that the front end is along the transport surface 21. It becomes.

  When the sheet P is adjusted in the vertical direction by the front abutting portion 3 and the upper abutting portion 4, the width direction is adjusted by the laterally abutting portion (not shown), and then the swing claw 5 is moved from the transfer position. The gripper 51 grips the front end of the sheet P by rotating to the gripping position. Specifically, with the front abutting portion 3 positioned at the positioning position F1 and the upper abutting portion 4 positioned at the restricting position U1, the swing claw 5 has its tip end (gripper 51) on the downstream side from the mouth plate 2. From the separated transfer position, it turns to the upstream side, and its leading end (gripper 51) moves to the gripping position approaching the downstream end of the mouth plate 2 so that the front end of the sheet P is folded. Yeah.

  When the sheet P is picked up by the swing claws 5, the front contact portion 3 moves from the positioning position F1 to the front contact retract position F2, and at the same time, the upper contact portion 4 moves from the restriction position U1 to the upper contact retract position U3. (From the state shown in FIG. 6 to the state shown in FIG. 3 through the state shown in FIG. 4). In other words, both the upper abutting portion 4 and the front abutting portion 3 are in a state of being retracted below the conveying surface 21.

  Then, when both the upper pad 4 and the front pad 3 are withdrawn from the transport path (transport surface 21) of the sheet P, the swing claw 5 gripping the front end of the sheet P is moved from the grip position. The sheet P is rotated downstream to move to the transfer position, and the sheet P is transferred to the sheet feed drum D. Since the roller 43 is provided at the base end portion of the upper pad 4, when the sheet P is transferred to the paper feed drum D by the swing claw 5, the rear end of the sheet P is downward. Even if the roller 43 hangs down and comes into contact with the roller 43, the roller 43 rotates, so that the sheet P can be prevented from being damaged.

  The paper feed unit 1 of the printing press is provided with an inclination adjusting means 60. Specifically, as shown in FIG. 1, an inclination adjusting means 60 is provided on one end side of the front abutting shaft 7 and the upper abutting shaft 13. The inclination adjusting means 60 integrally adjusts the inclination of the axes C1 and C4 of both the front contact shaft 7 and the upper contact shaft 13 with respect to the conveying direction, and both the front contact shaft 7 and the upper contact shaft 13 are adjusted. A support portion 61 that integrally supports one end portion and an inclination drive portion 62 for moving the support portion 61 in the transport direction are provided.

  As shown in FIG. 7, the support portion 61 has a first arm 63 formed along the vertical direction, and projects from the upper end portion of the first arm 63 to the downstream side in the transport direction and is pivotally supported by the upper end portion. And a second arm 64 configured to be rotatable in the vertical direction.

  The first arm 63 is provided with a mounting hole 631 at its lower end and a front contact hole 632 into which one end of the front contact shaft 7 is inserted at its upper end. The first arm 63 is pivoted in the transport direction by being pivotally supported via a mounting hole 631 on a frame (not shown) of the printing press or a subframe SF fixedly disposed on the inner surface side of the frame. It becomes possible.

  Further, in the middle region in the vertical direction of the first arm 63, a screwing protrusion having a screw hole 6331 that protrudes to the inner surface side (the width direction and the inner side of the printing press) and intersects the protruding direction. A portion 633 is provided, and a shaft support hole 6341 is formed in a region between the screwing protrusion 633 and the front contact hole 632 and protruding in the direction intersecting the protrusion direction. A shaft support protrusion 634 is provided.

  The second arm 64 includes a main portion 65 formed along the conveyance direction, and a tongue piece portion 66 extending in the shape of a tongue piece downward from the downstream end portion of the main portion 65. The main portion 65 is provided with a front contact hole 651 into which one end portion of the front contact shaft 7 is inserted at the upstream end portion thereof, and an upper contact hole into which one end portion of the upper contact shaft 13 is inserted into the downstream end portion. 652 is provided. The tongue piece 66 is provided with a screwing protrusion 661 having a screw hole 6611 protruding in the inner surface side (in the width direction and inward of the printing press) and formed in a direction crossing the protruding direction.

  As shown in FIG. 8, the first arm 63 and the second arm 64 are overlapped so that both the front application holes 632 and 651 are coaxial, and both the front application holes 632 and 651 on the same axis. One end portion of the front abutting shaft 7 is rotatably inserted into the front shaft 7 and a paper thickness driving portion 67 for rotating the second arm 64 in the vertical direction is arranged to be connected to each other. Therefore, in the present embodiment, the second arm 64 is configured to rotate up and down independently by the paper thickness driving unit 67, and the rotation center (paper thickness rotation center C7) is the front contact shaft. 7 coincides with the axis C1. Then, one end of the upper contact shaft 13 is rotatably inserted into the upper contact hole 652 of the second arm 64. In this connection state, the axial projection 634 of the first arm 63 and the screwing projection 661 of the second arm 64 are substantially the same in the vertical direction, and the axial projection. The shaft support hole 6341 of the portion 634 and the screw hole 6611 of the screwing projection 661 are coaxial.

  The paper thickness drive unit 67 includes a motor 671 provided with a gear 6711 at its shaft part, and a drive shaft 672 provided with a screw part 6721 at one end part and a worm wheel 6722 at the other end part. In the present embodiment, a spring is provided from the screw portion 6721 to the worm wheel 6722. The other end of the drive shaft 672 is pivotally supported by the shaft support hole 6341 of the shaft support projection 634 of the first arm 63, and the screw portion 6721 of one end is the screw hole of the screw projection 661 of the second arm 64. The motor 671 is fixed to the first arm 63 so that the gear 6711 of the shaft portion meshes with the worm wheel 6722 of the drive shaft 672.

  Further, the first arm 63 and the second arm 64 are configured such that the first arm 63 is rotatably attached to the subframe SF or the frame via the attachment hole 631, and the center of the attachment hole 631 is inclined by the tilt driving unit 62. It is designed to rotate integrally in the transport direction around. In the present embodiment, the rotation center (support rotation center C6) of the support portion 61, which is the rotation center of the first arm 63, is set on the transport downstream end surface Y, and is more than the claw rotation center C5. It is arranged on the lower side. Accordingly, the turning radius of the first arm 63 (support portion 61) is larger than the turning radius of the swing claw 5.

  Here, the tilt driving unit 62 includes a motor 621 having a shaft 621 provided with a gear 6211 and a driving shaft 622 having a screw portion 6221 formed at one end thereof and a worm wheel 6222 provided at the other end thereof. . The drive shaft 622 is pivotally supported by the shaft support hole SF11 of the shaft support protrusion SF1 having the other end projecting from the subframe SF and having the shaft support hole SF11, and a screw portion 6221 at one end thereof is supported by the first arm 63. The motor 621 is fixed to the sub-frame SF so that the gear 6211 of the shaft portion meshes with the worm wheel 6222 of the drive shaft 622.

  As described above, in the present embodiment, the support portion 61 is configured by connecting the first arm 63 and the second arm 64 that are separate from each other via the paper thickness drive portion 67, and One end portion is pivotally supported and one end portion of the upper abutment shaft 13 is pivotally supported, and the tilt drive portion 62 is rotated in the transport direction.

  In the present embodiment, the inclination adjusting means 60 is also provided on the other end side of the front abutting shaft 7 and the upper abutting shaft 13. That is, as shown in FIG. 1, a pair of inclination adjusting means 60 is provided on one end side and the other end side of the shafts 7 and 13. The inclination adjusting means 60 may be provided only on one side of the one end side or the other end side.

  Next, the inclination adjustment for adjusting the inclination of the axis C1 of the front abutment shaft 7 and the axis C4 of the upper abutment shaft 13 with respect to the conveying direction in the printing machine having such a configuration will be described with reference to FIGS.

First, as shown in FIG. 9A, the case where the inclination adjustment of the axis C1 of the front abutment shaft 7 and the axis C4 of the upper abutment shaft 13 is performed by one inclination adjusting means 60 will be described.
When the motor 621 of the tilt driving unit 62 of one tilt adjusting means 60 is driven and the gear 6211 rotates, the drive shaft 622 rotates about its axis via the worm wheel 6222. Then, the screwing position M1 between the screw part 6221 of the drive shaft 622 and the screw hole 6331 of the screwing protrusion 633 of the first arm 63 is displaced. FIG. 9A shows a case where the screwing position M1 is displaced downstream in the transport direction. When the screwing position M1 is displaced to the downstream side in the transport direction, the first arm 63, the second arm 64 and the (support portion 61) rotate around the support rotation center C6 to the downstream side in the transport direction, and the front contact hole 632 , 651 and the upper contact hole 652 are moved to the downstream side in the transport direction. Then, one end portion of the front contact shaft 7 inserted into the front contact holes 632 and 651 and one end portion of the upper contact shaft 13 inserted into the upper contact hole 652 are both moved to the downstream side in the transport direction. . Thus, the inclination of the axis C1 of the front abutment shaft 7 and the axis C4 of the upper abutment shaft 13 is inclined to the upstream side in the transport direction from the other side to the one side.

Next, as shown in FIG. 9B, the case where the other inclination adjusting means 60 adjusts the inclination of the axis C1 of the front abutting shaft 7 and the axis C4 of the upper abutting shaft 13 will be described.
When the motor 621 of the tilt driving unit 62 of the other tilt adjusting means 60 is driven and the gear 6211 rotates, the drive shaft 622 rotates around its axis via the worm wheel 6222. Then, the screwing position M1 between the screw part 6221 of the drive shaft 622 and the screw hole 6331 of the screwing protrusion 633 of the first arm 63 is displaced. FIG. 9B shows a case where the screwing position M1 is displaced upstream in the transport direction. When the screwing position M1 is displaced to the upstream side in the transport direction, the first arm 63, the second arm 64 and the (support portion 61) rotate around the support rotation center C6 to the upstream side in the transport direction, and the front application hole 632 is provided. , 651 and the upper contact hole 652 are moved to the upstream side in the transport direction. Then, the other end portion of the front contact shaft 7 inserted into the front contact holes 632 and 651 and the other end portion of the upper contact shaft 13 inserted into the upper contact hole 652 are both positioned upstream in the transport direction. Moving. As a result, the inclination of the axis C1 of the front abutment shaft 7 and the axis C4 of the upper abutment shaft 13 is inclined toward the upstream side in the transport direction from one side to the other side.

  It is also possible to operate both the inclination adjusting means 60 to adjust the inclination of the axis C1 of the front abutting shaft 7 and the axis C4 of the upper abutting shaft 13. Specifically, one end of both the front abutment shaft 7 and the upper abutment shaft 13 is moved to the upstream side in the transport direction (or the downstream side in the transport direction) by one tilt adjustment means 60, and the other tilt is also added. By moving the other end portions of both the front contact shaft 7 and the upper contact shaft 13 to the downstream side in the transport direction (or upstream in the transport direction) by the adjusting means 60, the axis C1 and the upper contact of the front contact shaft 7 are moved. The inclination of the axis C4 of the shaft 13 can be adjusted.

  In addition, it is possible to translate the axis C1 of the front abutment shaft 7 and the axis C4 of the upper abutment shaft 13 in the conveyance direction while maintaining the inclination with respect to the respective conveyance directions by both inclination adjusting means 60. Specifically, as shown in FIG. 9 (C), the both ends of the front abutment shaft 7 and the upper abutment shaft 13 are set to the upstream side in the conveyance direction (or the conveyance direction) by both the inclination adjusting means 60. By moving the position to the downstream side), the axes C1 and C4 are moved upstream in the conveying direction (or in the conveying direction) while maintaining the inclination of the axis C1 of the front abutting shaft 7 and the axis C4 of the upper abutting shaft 13 with respect to the conveying direction. It can be translated to the downstream side. In FIG. 9C, one or the other or both of the inclination adjusting means 60 are operated so that the inclination of the axis C1 of the front abutment shaft 7 and the axis C4 of the upper abutment axis 13 in the conveying direction. After the tilt, the parallel movement along the conveying direction of the two axes C1 and C4 is performed.

  In the printing machine according to the present embodiment, the second arm 64 of the support portion 61 is configured to be rotated in the vertical direction by the paper thickness drive portion 67. 4 and the mouth plate 2 can be adjusted (paper thickness adjustment) according to the thickness of the sheet P to be conveyed. Hereinafter, the paper thickness adjustment will be described with reference to FIGS.

  When the motor 671 of the paper thickness drive unit 67 of the one and the other inclination adjusting means 60 is driven and the gear 6711 rotates, the drive shaft 672 rotates around the axis via the worm wheel 6722. Then, the screwing position M2 between the screw portion 6721 of the drive shaft 672 and the screw hole 6611 of the screwing protrusion 661 of the second arm 64 is displaced. FIG. 10 shows a case where the screwing position M2 is displaced downstream in the transport direction. When the screwing position M2 is displaced to the downstream side in the transport direction, the second arms 64 of the one and the other inclination adjusting means 60 are respectively around the centers of the front contact holes 632 and 651 (the axis C1 of the front contact shaft 7). By rotating in the transport direction, the upper contact hole 652 moves upward. Then, the upper contact shaft 13 inserted into the upper contact hole 652 moves upward about the axis C 1 of the front contact shaft 7, and the upper contact formed at the tip of the upper contact arm 12 provided on the upper contact shaft 13. The part 4 moves upward. Then, as shown in FIG. 10, the regulating surface 41 of the upper pad 4 moves upward and is separated from the conveying surface 21, and the gap T between the regulating surface 41 and the conveying surface 21 is widened.

  On the contrary, the motor 671 is driven so that the screw position M2 between the screw portion 6721 of the drive shaft 672 and the screw hole 6611 of the screw protrusion 661 of the second arm 64 is displaced upstream in the transport direction. Then, the upper abutment shaft 13 is moved downward, and the upper contact portion 4 is moved downward. If it does so, the control surface 41 will approach the conveyance surface 21, and the clearance gap T between the control surface 41 and the conveyance surface 21 will become narrow.

  As described above, the paper thickness driving unit 67 is operated to move the second arm 64 in the vertical direction, thereby moving the regulating surface 41 in the vertical direction, and the gap T between the regulating surface 41 and the conveying surface 21 is widened. By narrowing or narrowing, the width of the gap T can be adjusted (paper thickness adjustment) according to the thickness of the sheet P conveyed on the conveying surface 21.

  It is possible to adjust the paper thickness by operating the remaining paper thickness driving unit 67 after operating either one or the other paper thickness driving unit 67 first. Are preferably operated simultaneously to adjust the paper thickness because it can be adjusted more accurately.

  In the printing machine configured as described above, both the front abutment shaft 7 and the upper abutment shaft 13 can be tilt-adjusted by the inclination adjusting means 60, so that the front end of the sheet P to be transported is temporarily Even if the shape is inclined with respect to the transport direction, the inclination of the axes C1 and C4 of both shafts 7 and 13 is matched with the inclination of the front end of the sheet P, for example, a sheet to be transported The inclination of the front end of the paper P can be adjusted to be substantially the same.

  Here, the inclination adjusting means 60 does not individually adjust the inclination of each of the front abutment shaft 7 and the upper abutment shaft 13, but the end portions of both the shafts 7 and 13 are integrally pivoted by the support portion 61. Since the tilt is adjusted at the same time in a supported state, the tilt relationship between the axes C1 and C4 of both the shafts 7 and 13 (for example, a relationship parallel to the transport direction) is maintained. The inclination of both shafts 7 and 13 can be adjusted collectively.

  As described above, the inclinations of the axes 7 and 13 with respect to the conveying direction of the axes C1 and C4 are adjusted so as to match the inclination of the front end of the sheet P while maintaining the inclination relationship between the axes C1 and C4. As a result, the upward movement of the front end portion of the sheet P can be uniformly regulated by the upper abutting portion 4, and the front end of the sheet P is brought into abutment with the front abutting portion 3 so that the sheet P is vertically oriented. Can be accurately positioned. Accordingly, the sheet P conveyed on the conveying surface 21 is accurately positioned at the downstream end of the mouth plate 2 and is picked up by the swing claws 5 and fed to the sheet feeding drum D on the downstream side. Therefore, the so-called oblique image can be suppressed and printing can be performed at an accurate position with respect to the sheet P, and the print quality can be improved.

  In addition, the first arm 63 that pivotally supports one end (or the other end) of the front abutment shaft and the second arm 64 that pivotally supports one end (or the other end) of the upper abutment shaft 13 are connected. Since the support portion 61 is rotated in the transport direction around the support rotation center C6 by the tilt drive portion 62, one end portions (or the other end portions) of both the front contact shaft 7 and the upper contact shaft 13 are batched. At the same time, the position can be moved in the transport direction, and the inclinations of the axes C1 and C4 of the shafts 7 and 13 with respect to the transport direction can be easily and reliably collectively adjusted.

  Further, the upper arm 13 is moved in the vertical direction by rotating the second arm 64 in the vertical direction around the paper thickness rotation center C7 by the paper thickness driving unit 67, so that the regulating surface 41 of the upper pad 4 is moved. And the gap T between the transfer surface 21 and the transfer surface 21 can be widened or narrowed. Therefore, the width of the gap T can be adjusted according to the thickness of the sheet P to be conveyed, and the upper and lower movements of the front end portion of the sheet P are more reliably regulated by the upper cover 4. be able to.

  Further, the paper thickness rotation center C7 coincides with the front contact rotation center C1, that is, the rotation center of the second arm 64 coincides with the axis C1 of the front contact shaft 7, so that the second arm 64 is Even if it rotates around the paper thickness rotation center C7, the distance between the axis C1 of the front abutment shaft 7 and the axis C4 of the upper abutment shaft 13 is kept constant. Therefore, the positional relationship between the front pad 3 and the top pad 4 can be maintained with high accuracy, and the sheet P can be positioned more accurately.

  In addition, since the tilt adjusting means 60 is provided as a pair on one end side and the other end side of both the front abutment shaft 7 and the upper abutment shaft 13, the respective inclination adjustment means 60 are operated independently, respectively. The inclinations of the one end portions and the other end portions of the shaft 7 and the upper contact shaft 13 can be independently adjusted. Therefore, either one or both of the tilt adjusting means 60 can adjust the tilt, and both the tilt adjusting means 60 can be linked to move both the shafts 7 and 13 in the transport direction. . Therefore, the mutual positional relationship between the front abutting portion 3 and the upper abutting portion 4 and the positional relationship between the front abutting portion 3 and the upper abutting portion 4 and the mouth plate 2 can be adjusted with high accuracy, and a more accurate sheet. The paper P can be positioned. In addition, since the inclination of the front abutment shaft 7 and the upper abutment shaft 13 can be adjusted by both the inclination adjusting means 60, the other side of the sheet P printed on one side thereof in a single-sided printing machine. When printing is performed, it is possible to easily align the print image position on one side and the print image position on the other side.

  Furthermore, since the rotation center (support rotation center C6) of the support part 61 is set on the said conveyance downstream end surface Y and is arrange | positioned below the nail | claw rotation center C5, When the shafts 7 and 13 are moved by rotation, the shafts 7 and 13 are hardly displaced in the direction perpendicular to the transport surface 21 and mainly the surface direction of the transport surface 21 (transport direction). ). Therefore, the tilt can be adjusted more easily and with high accuracy.

  Furthermore, the front abutment shaft 7 and the upper abutment shaft 13 are arranged so that the axial plane Z is substantially parallel to the transport surface 21, and a paper thickness rotation center C 7 that is the rotation center of the second arm 64 is defined. Since it coincides with the axis C <b> 1 of the front abutment shaft 7, when the upper abutment shaft 13 is moved by the rotation of the second arm 64, the upper abutment shaft 13 is mainly displaced in a direction perpendicular to the transport surface 21. Therefore, the paper thickness can be adjusted more easily and with high accuracy.

  Further, since the tilt driving unit 62 is operated by the motor 621, the tilt can be easily and highly accurately adjusted by electrically interlocking the pair of tilt driving units 62. Further, since the paper thickness driving unit 67 is also operated by the motor 671, the paper thickness can be adjusted easily and with high accuracy by electrically interlocking the pair of paper thickness driving units 67.

  In the present embodiment, the case where the support unit 61 is rotated in the transport direction by the tilt driving unit 62 has been described. However, the present invention is not limited to this. For example, the support unit 61 slides linearly along the transport direction by the tilt drive unit 62. It may be the case. In any case, the support portion 61 that integrally supports one end portions of both the front contact shaft 7 and the upper contact shaft 13 is displaced upstream or downstream in the transport direction with respect to the other end portions of the shafts 7 and 13. As described above, by moving by the tilt driving unit 62, the tilts of the axes C1 and C4 of both the front contact shaft 7 and the upper contact shaft 13 with respect to the transport direction can be adjusted.

  Here, the case where the support part 61 slides linearly along the conveyance direction will be described in more detail. As shown in FIGS. 11 and 12, the support portion 61 is formed with a front contact hole 72 into which one end portion of the front contact shaft 7 is inserted, and an upper contact hole 73 into which one end portion of the upper contact shaft 13 is inserted. The block body 70 and a rail engaging portion 71 attached to the outer surface of the block body 70 are provided.

  The block body 70 is a single block having a predetermined thickness, and the front application hole 72 and the upper application hole 73 are each in the thickness direction (in other words, the direction from the inner surface to the outer surface of the block body 70). ). A shaft hole 74 is formed at one end of the block body 70 in the width direction, to which a tip portion 82 of a shaft 80 described later is connected. The shaft hole 74 has a threaded portion.

  The rail engaging portion 71 is attached to the outer surface of the block body 70, and can engage with a rail 75 attached to, for example, a frame (not shown) of a printing press. The rail direction of the rail 75 is parallel to the transport direction.

  On the other hand, the tilt drive unit 62 is configured to slide the support unit 61 linearly along the transport direction, and specifically, a motor 81 having a shaft 84 provided with a gear, A shaft 80 for connecting the motor 81 and the support portion 61 is provided.

  The motor 81 is provided on the upstream side of the support portion 61 in the transport direction, and the shaft portion 84 is installed in a direction orthogonal to the transport direction (more specifically, the transport surface 21). The shaft 80 has a distal end portion 82 connected to the support portion 61 and a proximal end portion 83 connected to the motor 81. More specifically, the shaft 80 is formed with a threaded portion at the distal end portion 82 thereof, and is provided with a worm gear at the proximal end portion 83, and the threaded portion of the distal end portion 82 on the downstream side in the conveying direction is the block. The worm gear of the base end portion 83 which is screwed into the threaded portion of the shaft hole 74 of the body 70 and is upstream in the transport direction is meshed with the gear of the motor 81. The shaft 80 is supported on a shaft support portion 85 provided on the frame of the printing machine on both the downstream side and the upstream side of the worm gear so as to be rotatable around the axis C8 and not movable in the direction of the axis C8. Has been. Further, the axis C8 of the shaft 80 is parallel to the transport direction (in other words, the transport surface 21).

  According to this configuration, when the motor 81 is driven to rotate the gear, the shaft 80 is rotated around the axis C8 via the worm gear, and the screw portion of the tip 82 and the shaft hole 74 of the block body 70 are rotated. The relative position with the screw portion changes. Then, the support portion 61 slides linearly along the transport direction as the rail engagement portion 71 slides along the rail 75. Specifically, when the shaft 80 rotates around the axis C8 to one side and the screwing position of the screw portion of the tip 82 and the screw portion of the shaft hole 74 moves to the upstream side in the transport direction, the support portion 61 is moved. Moves linearly upstream along a direction parallel to the transport direction. On the other hand, when the shaft 80 rotates around the axis C8 to the other side and the screwing position of the screw portion of the tip 82 and the screw portion of the shaft hole 74 moves to the downstream side in the transport direction, the support portion 61 moves in the transport direction. It moves linearly along the direction parallel to the downstream.

  When the support portion 61 moves linearly upstream or downstream in the transport direction, one end portion of the front contact shaft 7 inserted into the front contact hole 72 and the upper contact shaft 13 inserted into the upper contact hole 73. Together with the one end, the position is moved upstream or downstream in the transport direction, and as a result, the inclination of the axis C1 of the front abutment shaft 7 and the axis C4 of the upper abutment shaft 13 can be adjusted.

  In this way, by configuring the movement of the support portion 61 to be a linear slide movement along the transport direction, one end of both the front contact shaft 7 and the upper contact shaft 13 that the support portion 61 supports integrally. Since the section can be moved only in the transport direction (slide direction) without moving up and down, it is possible to easily adjust the tilt according to the tilt of the front end of the sheet P to be transported with respect to the transport direction. it can.

  In this embodiment, the case where the upper abutment shaft 13 is moved in the vertical direction to adjust the paper thickness has been described. However, the present invention is not limited to this, and the upper abutment shaft 13 may be rotated to adjust the paper thickness. . For example, a paper thickness adjusting mechanism capable of rotating the upper abutting shaft 13 so that the upper abutting portion 4 is moved upward or downward is provided. Specifically, as shown in FIGS. 13 and 14, the paper thickness adjusting mechanism 90 is provided in the upper contact transmission means 15, and a paper thickness adjusting screw 901 provided in the link arm 1022 of the rotation transmitting unit 102; A connecting body 902 that connects the paper thickness adjusting screw 901 and the other end of the upper contact link 152 is provided.

  The paper thickness adjusting screw 901 is rotatably provided at the distal end portion of the link arm 1022 so that its axis is along the longitudinal direction of the upper link 152, and the paper thickness adjusting screw 901 is provided at one end thereof. A knob portion 903 for rotating around the axis is formed. The connecting body 902 is provided so as to span the upper contact link 152 and the paper thickness adjusting screw 901, and is rotatably attached to the other end portion of the upper contact link 152 and screwed to the paper thickness adjusting screw 901.

  In the case shown in FIG. 13, the upper link 152 is formed so that one end thereof is downstream in the transport direction and the other end is upstream in the transport direction, that is, the longitudinal direction thereof is along the transport direction. Yes. Therefore, the paper thickness adjusting screw 901 is provided such that one end thereof is on the upstream side in the transport direction and the other end is on the downstream side in the transport direction. 13 is configured such that the cam arm 1023 and the urging arm 1024 form one arm.

  According to this configuration, when the paper thickness adjusting screw 901 rotates about its axis, the screwing position of the paper thickness adjusting screw 901 and the connecting body 902 is displaced, and the connecting body 902 is moved in the axial direction of the paper thickness adjusting screw 901. (In the case of FIG. 13, it moves to the upstream or downstream side in the transport direction). Then, the upper contact link 152 moves in the longitudinal direction (in the case of FIG. 13, upstream or downstream in the transport direction), and the upper contact shaft arm 151 connected to one end of the upper contact link 152 is upstream in the transport direction. Rotate side or downstream. Then, the upper abutment shaft 13 rotates to the upstream or downstream side in the transport direction, the upper support part 4 rotates to the upstream or downstream side in the transport direction, and the regulation surface 41 of the upper support part 4 moves upward or downward. As a result of being separated from or approaching the transport surface 21, the gap T between the regulation surface 41 and the transport surface 21 becomes wider and narrower. Therefore, the width of the gap T can be adjusted (paper thickness adjustment) according to the paper thickness of the conveyed sheet P.

  Further, in the present embodiment, the position where the support portion 61 supports both the front contact shaft 7 and the upper contact shaft 13 is the end portion in the axial direction, and the inclination driving portion 62 moves the support portion 61 in the transport direction. However, the present invention is not limited to this, and the support portion 61 is configured to support the middle portions of both the front abutment shaft 7 and the upper abutment shaft 13, and the tilt driving portion 62 is configured to support the conveyance surface 21. The support portion 61 may be configured to rotate about an axis perpendicular to the axis.

  Furthermore, in this embodiment, although the case where the support part 61 was each provided with the 1st arm 63 and the 2nd arm 64 which were each separate was demonstrated, it is not restricted to this, For example, when the support part 61 is provided with only one arm. Or it may be a case with three or more arms.

  Furthermore, in the present embodiment, the case where the support rotation center C6 is set on the transport downstream end surface Y has been described. However, the present invention is not limited to this, and the support rotation center C6 is set upstream or downstream of the transport downstream end surface Y. You can also.

  In the present embodiment, the case where the paper thickness rotation center C7 coincides with the front contact rotation center C1 is described. However, the present invention is not limited to this. For example, the paper thickness rotation center C7 is on the axial plane Z and the front contact shaft 7 It can also be provided upstream or downstream of the axis C1. In addition, it can also be provided above or below the axial plane Z.

  Furthermore, in the present embodiment, the case where the second arm 64 rotates about the paper thickness rotation center C7 has been described. However, the present invention is not limited to this. For example, the second arm 64 slides in a direction perpendicular to the conveyance surface 21. It may be a case of moving.

  Furthermore, in the present embodiment, the case has been described in which the front abutting part 3 rotates and moves between the positioning position F1 and the front receiving and retracting position F2. However, the present invention is not limited to this. Thus, the positioning position F1 and the front hitting position F2 can be moved. Specifically, the front contact portion 3 is positioned below the transport surface 21 at the front contact retracting position F2, and is positioned so as to protrude upward from the transport surface 21 by moving upward from the front contact retract position F2. You may be comprised so that it may move to the position F1.

FIG. 3 is a partial perspective view illustrating a paper feeding unit in the printing press according to the embodiment of the present invention. FIG. 3 is a partial schematic diagram illustrating a front application unit and an upper application unit of the paper supply unit. It is a partial schematic diagram which shows a mode that a front contact part and an upper contact part rotate, and is a figure which shows a mode that a front contact part is located in a front hit | escape retracted position, and an upper contact part is located in an upper hit retracted position. It is the partial schematic diagram which shows a mode that a front contact part and an upper contact part rotate, a front contact part moves to a positioning position from a front-aperture retracting position, and an upper-aperture part moves to a standby position from a front abutment retracting position. The figure which shows the state in the middle. It is the partial schematic diagram which shows a mode that a front pad part and an upper pad part rotate, The figure which shows a mode that a front pad part is located in a positioning position, and an upper pad part is located in a stand-by position. It is the partial schematic diagram which shows a mode that a front contact part and an upper contact part rotate, and is a figure which shows a mode that a front contact part is located in a positioning position, and an upper contact part is located in a control position. The perspective view which shows the support part of an inclination adjustment means. The partial schematic diagram which shows arrangement | positioning of the inclination adjustment means. It is a figure which shows the inclination adjustment of a front abutment axis and an upper abutment axis, (A) is a figure which moves the one end part of both a front abutment axis and an upper abutment axis to a conveyance direction, and is a figure which adjusts an inclination, (B) It is a figure which moves the other end part of both a front contact shaft and an upper contact shaft to a conveyance direction, and is a figure which adjusts inclination, (C) inclined the axis line of both the front contact shaft and the upper contact shaft with respect to the conveyance direction. It is a figure which translates both axes in the conveyance direction later. FIG. 7 is an enlarged view of a part A in FIG. 6, illustrating a state in which a paper thickness is adjusted by widening a gap between a conveyance surface and a regulation surface. Schematic which shows other embodiment of an inclination adjustment means. Schematic which shows other embodiment of an inclination adjustment means. Schematic which shows other embodiment of paper thickness adjustment. Sectional drawing which shows the paper thickness adjustment mechanism in other embodiment of paper thickness adjustment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Paper feed part, 2 ... Mouth plate, 3 ... Front contact part, 4 ... Upper contact part, 5 ... Swing claw, 6 ... Front contact arm, 7 ... Front contact shaft, 8 ... Cam shaft, 9 ... Front contact cam DESCRIPTION OF SYMBOLS 10 ... Front contact transmission means, 11 ... Biasing means, 12 ... Upper contact arm, 13 ... Upper contact shaft, 14 ... Upper contact cam, 15 ... Upper contact transmission means, 21 ... Conveying surface, 31 ... Projection piece, 32 ... Connection piece, 33: Abutment surface, 41 ... Restriction surface, 42 ... Guiding surface, 43 ... Roller, 51 ... Gripper, 60 ... Inclination adjusting means, 61 ... Supporting portion, 62 ... Inclination driving portion, 63 ... First arm, 64 ... First 2 arms, 65 ... main part, 66 ... tongue piece part, 67 ... paper thickness drive part, 70 ... block body, 71 ... rail engagement part, 74 ... shaft hole, 75 ... rail, 80 ... shaft, 82 ... shaft 83 ... Shaft base end portion, 85 ... Shaft support portion, 90 ... Paper thickness adjusting mechanism, 91 ... Front-escape avoidance portion 92 ... Position determination response unit, 101 ... Front contact shaft arm, 102 ... Rotation transmission unit, 103 ... Front contact link, 141 ... Elevation avoidance response unit, 142 ... Standby response unit, 143 ... Regulation response unit, 151 ... Upper contact shaft Arm, 152 ... Upper contact link, 81, 621, 671 ... Motor, 622, 672 ... Drive shaft, 631 ... Mounting hole, 72, 632, 651 ... Front application hole, 633, 661 ... Screw projection, 634, SF1 ... Projection for shaft support, 73, 652 ... Upper hole, 901 ... Paper thickness adjusting screw, 902 ... Connector, 903 ... Picking part, 1021 ... Base, 1022 ... Link arm, 1023 ... Cam arm, 1024 ... Biasing arm , 6211, 6711 ... gear, 6221, 6721 ... screw part, 6222, 6722 ... worm wheel, 6331, 6611 ... screw hole, 6341, SF11 ... shaft support hole, D ... Paper cylinder, P ... sheet, T ... clearance, X ... conveying direction, Y ... conveying downstream end face, Z ... axial flat surface, CF ... cam follower, SF ... subframe, C1 ... center of front contact rotation (front contact shaft) Axis), C2 ... Camshaft axis, C3 ... Transmission rotation center, C4 ... Upper contact rotation center (Axis of upper contact shaft), C5 ... Nail rotation center, C6 ... Support rotation center, C7 ... Paper thickness rotation Center, C8 ... shaft axis, F1 ... positioning position, F2 ... front contact retracted position, M1, M2 ... screwing position, U1 ... regulated position, U2 ... standby position, U3 ... upper contact retracted position

Claims (6)

A front abutting portion that contacts the front end of the sheet conveyed on the sheet feeding plate to position the sheet in the vertical direction, and a front end portion of the sheet positioned on the front abutting portion is moved upward. An upper pad to regulate,
The front abutting portion is provided on a front abutting shaft along a width direction of the printing press and is configured to be rotatable around an axis of the front abutting shaft. The upper abutting portion is an axis different from the front abutting shaft. Provided on the upper abutment shaft along the width direction of the printing press and configured to be rotatable around the axis of the upper abutment shaft,
A printing machine comprising: an inclination adjusting unit that integrally adjusts the inclination of the axis of both the front contact shaft and the upper contact shaft with respect to the conveyance direction.   The inclination adjusting means includes a support portion that integrally supports one end portions of both the front contact shaft and the upper contact shaft, and an inclination drive portion for moving the support portion in the transport direction. The printing press according to claim 1.   The printing press according to claim 2, wherein the support portion is configured to slide and move linearly along a conveyance direction by the tilt driving unit.   The support portion is formed in a vertical direction and is configured to be pivotable in a transport direction around a lower end portion thereof, and the upper end so as to protrude downstream from the upper end portion of the first arm in the transport direction. And a second arm configured to be pivotable in the vertical direction. The front abutment shaft is pivotally supported at the upper end of the first arm, and the upper abutment shaft is transported by the second arm. The printing press according to claim 2, wherein the printing press is pivotally supported at a downstream end portion in the direction.   The printing press according to claim 4, wherein a rotation center of the second arm coincides with an axis of the front contact shaft.   A pair of the tilt adjusting means is provided on one end side and the other end side of the both shafts so that the one end portions and the other end portions of the front contact shaft and the upper contact shaft can be independently adjusted. The printing machine according to claim 1, wherein the printing machine is a printer.

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