JP5171162B2 - Plate handling equipment - Google Patents

Description

  The present invention relates to a plate handling device provided with a plate discharge device for discharging a plate mounted on a plate cylinder.

  Conventionally, in a printing machine, for example, replacement of a printing plate mounted on a plate cylinder, that is, discharging a printing plate mounted on a plate cylinder (hereinafter referred to as an old plate) and a new printing plate (hereinafter referred to as a new plate) 2. Description of the Related Art A plate changer that automatically supplies a supplied plate is known (see, for example, Patent Document 1).

  A conventional plate changer will be briefly described with reference to FIGS. 17 is a schematic configuration diagram of a conventional plate changer, FIG. 18 is a procedure explanatory diagram following FIG. 17, FIG. 19 is a procedure explanatory diagram following FIG. 18, FIG. 20 is a procedure explanatory diagram following FIG. FIG.

  As shown in FIG. 17, the plate changer is composed of a plate holding device 410, a first plate guide device 440, and a second plate guide device 460, and is applied to, for example, the duplex printing machine shown in FIG. Hereinafter, an example in which a conventional plate changer is disposed in the vicinity of the upper plate cylinder 12 disposed on the left and right frames 11 of the printing unit of the duplex printing machine shown in FIG. 1 will be described.

  The plate holding device 410 is formed in a plate shape and arranged in a pair in the axial direction of the upper plate cylinder 12, and is substantially parallel to the longitudinal direction of the guide frame 412, on one end side of the guide frame 412. The first and second guide members 414, 415, the rodless cylinder 419, and the like, which are oriented in the longitudinal direction, are formed.

  The first and second guide members 414 and 415 have base ends connected and fixed to the guide frame 412. The guide frame 412 and the first guide member 414 have a gap so that a storage portion 416a for storing the old plate 2 is formed therebetween. The first and second guide members 414 and 415 have a gap so that a storage portion 416b for storing the new edition 1 is formed between them.

  The rodless cylinder 419 is attached with a base end portion 421a side of a U-shaped support member 421 having an opening side toward the distal end side of the guide frame 412. The support member 421 is guided by the rodless cylinder 419. It can be slid along the longitudinal direction of the frame 412. Further, another rodless cylinder (not shown) is attached with a base end portion 422a side of a U-shaped support member 422 with the opening side directed toward the distal end side of the guide frame. It can be slid by a rodless cylinder.

  Further, the base end side of the hook 425 as a plate holding member having a claw 425a at the tip is connected and supported between the support frames 102 on the tip 421b of the support member 421, and the shaft in the same direction as the upper plate cylinder 12 is supported. It is supported so that it can freely swing around an axis in the same direction as the support shaft 411 that can rotate around. While the hook 425 can be rotated by its own weight, a range in which the hook 425 can be rotated is limited by a stopper pin 427 serving as a swing restricting member projecting from the distal end portion 421 b of the support member 421.

  Further, the base end side of the hook 426 as the plate removal holding member having the claw portion 426a at the tip thereof is supported on the tip end portion 422b of the support member 422 so as to freely swing around the axis in the same direction as the support shaft 411. Has been. The hook 426 can be rotated by its own weight in the same manner as the hook 425, and the range in which the hook 426 can be rotated is limited by a stopper pin 428 as a swing restricting member protruding from the distal end portion 422 b of the support member 422. Yes.

  The first plate guide device 440 also has a fixed guide plate 442 that guides the movement of the old plate 2, a plate guide 445 that distributes the plate to be guided, and a longitudinal direction along the axial direction of the upper plate cylinder 12. And a generally U-shaped mouth take-out guide 150. The printing plate guide 445 is connected to the printing plate guide drive actuator 446 via a link plate 444, and is expanded and contracted between the old plate guide position and the new plate guide position via the link plate 444. Can move. The gripper takeout guide drive actuator 452 is connected to the gripper takeout guide drive actuator 452, and can be moved by expansion and contraction of the gripper takeout guide drive actuator 452.

  A plurality of second plate guide devices 460 are rotatably provided at the plate guide 445, the inker cover 461 facing the guide surface of the plate guide 445, and the end of the inker cover 461 on the upper plate cylinder 12 side. The guide rollers 162 are provided.

  In the plate handling apparatus provided with the above-described conventional plate discharge device, the procedure for discharging the old plate after the upper plate cylinder 12 is rotated in the reverse direction and the bottom side of the old plate 2 is moved to the storage portion 416a is shown in FIGS. This will be briefly described with reference to FIG.

  When the top side of the old plate 2 is stored in the storage portion 416a by rotating the upper plate cylinder 12 in the reverse direction, the gripper takeout guide drive actuator 452 is shortened so that the gripper takeout guide 450 is viewed from the inker cover 461 side as shown in FIG. Move the old plate 2 away from the plate cylinder by moving it counterclockwise. When the old plate 2 is completely separated from the plate cylinder, the gripper takeout guide drive actuator 452 is extended as shown in FIG. 18 to move the gripper takeout guide 450 to the inker cover 461 side.

  Subsequently, the rodless cylinder 419 is used as shown in FIGS. 19 and 20, and the old plate 2 is moved to the base end side (downstream side in the discharge plate storing direction) of the guide frame 412 via the support member 421 and the hook 425. As shown in FIG. 21, the old plate 2 is stored in the storage portion 416a.

JP 2001-80047 A

  However, in the conventional plate changer described above, when the printing plate 2 is moved away from the plate cylinder 12 from the position shown in FIG. 18, the end of the holding side 2 a of the printing plate 2 is the plate cylinder 12. The plate 2 is in an elastically deformed state in contact with the plate 2, and when the plate 2 is moved away from the plate cylinder 12, a restoring force against the elastic deformation is applied to the plate 2. As a result, the end of the holding side 2 a may move along the peripheral surface of the plate cylinder 12 and may enter the plate cylinder 12 and the guide roller 462 as it is. When the end of the retaining plate 2a of the old plate 2 enters between the plate cylinder 12 and the guide roller 462 during the removal of the discharged plate as described above, the automatic plate replacement is not completed yet. There was a risk of stopping.

  In view of the above, an object of the present invention is to provide a plate handling apparatus that eliminates an error that occurs at the time of removing a discharged plate in a discharged plate process and enables a stable operation.

A plate handling apparatus according to a first aspect of the present invention for solving the above-described problem includes a plate discharge means for discharging a printing plate having a bent portion at an upstream end of the printing plate in the plate discharge direction from the plate cylinder. In the plate handling apparatus, the plate discharging means moves the plate holding means for holding the printing plate discharged from the plate cylinder, and moves the plate holding means from the holding position for holding the printing plate. Discharge plate moving means for moving in a direction away from the plate cylinder, and the printing medium provided upstream of the plate discharge means in the discharge plate storing direction and discharged between the plate cylinder and a guide member adjacent to the plate cylinder. A position of a restriction means for restricting insertion of the bent portion of the plate; a restriction means that moves between a restriction position spaced apart from the restriction position; and a position of the upstream end portion of the plate in the plate discharge direction. a plate position detecting means for detecting, said regulating means in the regulating position After the plate holding means is moved to the downstream side in the plate discharge direction in the installed state, the regulating means is moved when the end of the plate discharge direction upstream side of the plate is detected by the plate position detecting means. And a control means for controlling to move from the restriction position to the separation position.

The plate handling apparatus according to a second aspect of the present invention is the plate handling device according to the first aspect, wherein the control means detects the upstream end of the plate in the plate discharge direction by the plate position detection means. After moving the plate movement means so as to move to the upstream side in the plate discharge direction, and then moving the plate holding means downstream in the plate discharge direction when the restriction means is moved from the restriction position to the retracted position. The discharging plate moving means is operated so as to move to the position.

  According to a third aspect of the present invention, there is provided a plate handling apparatus according to the first aspect of the invention, further comprising plate supply means for supplying a printing plate to the plate cylinder, and the regulating means supplies the printing plate supplied from the plate supply means to the plate. It is a printing plate guide for guiding the printing plate discharged from the printing drum to the printing plate discharging means while guiding the printing plate to the printing plate cylinder.

  According to a fourth aspect of the present invention, there is provided a plate handling apparatus according to the first aspect, wherein the plate position detecting means is a detecting means for detecting a position of the discharged plate holding means.

  According to the above-described plate handling apparatus according to the present invention, the position of the printing plate holding bending portion can be detected via the discharged plate holding means, and the guide means can be released. A plate that is stably discharged without being affected by the change can be extracted. Further, since the curled state of the discharged plate changes due to printing, it is difficult to control the position of the bending portion while the printing plate is free. The guide plate can be released while the printing plate is once hooked on the guide means and moved to the upstream side in the plate storage direction, and the printing plate can be managed without being affected by the curled state.

  Embodiments of the present invention will be described in detail in the following examples.

  Hereinafter, an embodiment in which the plate handling apparatus according to the present invention is applied to a double-sided printing machine will be described with reference to FIGS.

  1 is a schematic configuration diagram of a double-sided printing machine, FIG. 2 is a schematic configuration diagram of an upper plate changer, FIG. 3 is an enlarged view of FIG. 1 extracted from an arrow A direction, and FIG. 4 is an arrow B direction of FIG. FIG. 5 is a block diagram showing a configuration related to plate discharge control, FIG. 6 is a flowchart showing steps related to plate discharge control, FIG. 7 is a procedure explanatory diagram of the upper plate changer, and FIG. 7 is a procedure explanatory diagram following FIG. 8, FIG. 10 is a procedure explanatory diagram following FIG. 9, FIG. 11 is a procedure explanatory diagram following FIG. 10, and FIG. 12 is a procedure explanatory diagram following FIG. FIG. 13 is an explanatory diagram of the procedure following FIG. 12, FIG. 14 is a partially enlarged view of the upper plate changer, FIG. 15 is an explanatory diagram of the procedure for installing the new plate of the upper plate changer, and FIG. It is procedure explanatory drawing which concerns on the switch to a position.

  As shown in FIG. 1, in a double-sided printing machine, an upper plate cylinder 12 is disposed on the upper side of the left and right frames 11 of the printing unit. An upper rubber cylinder 14 is in contact with the upper plate cylinder 12. On the other hand, a lower plate cylinder 13 is disposed on the lower side inside the frame 11. A lower rubber cylinder 15 is in contact with the lower plate cylinder 13. The upper rubber cylinder 14 and the lower rubber cylinder 15 are in contact with each other, and a printed material such as a web passes between the rubber cylinders 14 and 15.

  In other words, when ink or dampening water is supplied to the upper plate cylinders 12 and 13 from an ink supply device or a water supply device (not shown), the ink corresponding to the pattern of the plate of the upper plate cylinders 12 and 13 becomes the rubber cylinders 14 and 13. The pattern can be printed on both surfaces of the printing material transferred to the rubber cylinders 14 and 15, respectively.

  In the present embodiment, the upper printing cylinder 12, the upper rubber cylinder 14, the ink supply device, the water supply device, and the like constitute an upper printing unit, and the lower plate cylinder 13, the lower rubber cylinder 15, the ink supply device, The lower printing part is constituted by a water supply device or the like.

  A plate exchanging device (plate exchanging means) as a plate handling device provided with a plate discharging device for discharging the plate mounted on the plate cylinder is attached to the upper printing unit and the lower printing unit. Since the upper printing unit and the lower printing unit have substantially the same basic configuration and various configurations can be applied, here, only the plate changing device of the upper printing unit is used. This will be described as an example.

[Upper plate changer]
As shown in FIG. 1, an upper plate changer 100 that is a plate changer for an upper printing unit includes an upper plate holding device 110, a first plate guide device 140, and a second plate guide device 160. It is arrange | positioned in the vicinity. The detailed structure is shown below.

  The upper ends of the left and right frames 11 are connected and supported so that one end sides of a pair of L-shaped support arms 101 can swing around an axis in the same direction as the upper plate cylinder 12. The upper plate exchanging device 100 is supported on the other end side of the support arm 101 via a support frame 102 described later. As shown in FIGS. 2 and 3, the support frame 102 is connected and supported on the other end side of the support arm 101 so that it can swing around the axis in the same direction as the upper plate cylinder 12.

<Upper plate holding device>
An upper plate holding device 110 is connected and supported between the support frames 102 so as to be swingable about an axis in the same direction as the upper plate cylinder 12, and the upper plate holding device 110 has the following structure. It has become.

  As shown in FIGS. 2 and 3, a support shaft 111 is connected and supported between the support frames 102 so as to be able to rotate around an axis in the same direction as the upper plate cylinder 12. At both ends of the support shaft 111, one end sides of first and second guide frames 112, 113 formed in a plate shape and arranged in pairs in the axial direction of the upper plate cylinder 12 are connected and fixed, respectively. Has been.

  As shown in FIGS. 2 to 4, the other ends of the guide frames 112 and 113 are oriented in the longitudinal direction extending substantially parallel to the longitudinal direction of the guide frames 112 and 113 and extending to one end of the guide frames 112 and 113. The base end portions 114a and 115b of the first and second guide members 114 and 115 are connected and fixed.

  The guide frames 112 and 113 and the first guide member 114 have a gap therebetween so that a storage portion 116a for storing the old plate 2 is formed, and the upper plate holding device 110 is positioned as shown in FIG. 1, the end portion of the old plate 2 is placed at the base end portion 114 a of the first guide member 114, the one side surface of the old plate 2 is supported by the guide frames 112 and 113, and the old plate 2 is supported by the first guide member 114. It supports the other side surface.

  Further, the first and second guide members 114 and 115 have a gap therebetween so that the storage portion 116b for storing the new plate 1 is formed, and the upper plate holding device 110 is positioned as shown in FIG. 2, the end portion of the new plate 1 is placed at the base end portion 115 b of the second guide member 115, one surface of the new plate 1 is supported by the first guide member 114, and the new plate 1 is supported by the second guide member 115. The other surface of 1 is supported.

  The guide frames 112 and 113, the first guide member 114, and the like constitute a plate discharge storage means in the present embodiment, and the first and second guide members 114 and 115 and the like serve as a new plate storage means in the present embodiment. It is composed.

  One end of a link plate 129 is connected and fixed to the support shaft 111. The other end side of the link plate 129 is connected to the front end side of the upper plate holding device drive actuator 130 in a swingable manner. Further, the base end side of the upper plate holding device driving actuator 130 is supported by the support frame 102 so as to be swingable.

  That is, when the upper plate holding device drive actuator 130 is expanded and contracted, the support shaft 111 is rotated via the link plate 129, and the upper plate holding device 110 including the guide frames 112 and 113 is moved to the retracted position (see FIG. 2). It can be swung between the position (see FIG. 7) (details will be described later). In this embodiment, the link plate 129, the upper plate holding device drive actuator 130, and the like constitute plate holding device moving means.

  A hooking portion 115 a serving as a release member of a hook 126 described later is formed on the distal end side of the second guide member 115 so as to protrude to the outside of the guide frame 113. The first guide member 114 between the guide frames 112 and 113 has a guide roller 117 that is rotatable about an axis in the same direction as the upper plate cylinder 12 along the longitudinal direction of the guide frames 112 and 113. Several are attached at intervals. In addition, a contact plate 118 for restricting the shift in the width direction of the new edition 1 is attached to the second guide frame 113 via a bracket (not shown).

  A rodless cylinder 119, which is a moving means at the time of discharging, and a rodless cylinder 120, which is a moving means at the time of feeding, are arranged along the longitudinal direction of the guide frames 112, 113 on the outer surfaces in the opposing direction of the guide frames 112, 113. Are attached so that their axial directions are directed. The rodless cylinder 119 is attached with a base end portion 121a side of a U-shaped discharge plate supporting member 121 having an opening side directed toward the distal end side of the guide frame 112 via a moving element 134. Specifically, the rodless cylinder 119 can be slid along the longitudinal direction of the guide frame 112 between a position shown in FIG. 7 and a storage position shown in FIG. The length of the connecting portion 121 c of the plate support member 121 is set so that the front end portion 121 b is substantially at the same height as the extending portion of the guide member 114.

  A proximal end of a guide member 123 that is oriented in the longitudinal direction along the longitudinal direction of the guide frame 112 is connected and fixed to the distal end portion 121 b of the plate discharge support member 121. The guide member 123 is fixed to the discharge plate support member 121 and moves together with the discharge plate support member 121. Further, the distal end portion 121b of the discharged plate support member 121 is configured such that the proximal end side of the discharged plate extraction hook 125, which is a discharged plate holding member having a claw portion 125a at the distal end, can freely swing around an axis in the same direction as the support shaft 111. It is supported by.

  When the longitudinal direction of the distal end portion 121b of the discharged plate supporting member 121 is oriented in the direction shown in FIG. 7 to be described later, the discharged plate extraction hook 125 moves so as to position the claw portion 125a on the proximal end portion 121a side by its own weight. Then, while the claw portion 125a is advanced into the storage portion 116a, when the longitudinal direction of the front end portion 121b of the plate discharge support member 121 is oriented in the vertical direction as shown in FIG. 2, it overlaps with the front end portion 121b by its own weight. The claw portion 125a can be retracted from the storage portion 116a by moving to fit.

  That is, the discharge plate extraction hook 125 is located on the front end side of the guide frame 112 with respect to the connecting portion 121c of the discharge plate support member 121. In other words, the discharge plate extraction hook 125 is at the downstream end in the discharge plate storage direction of the storage portion 116a when in the storage position. Is located upstream of the base end portion 114a in the discharge plate storage direction, and the length between the swing support point of the discharge plate extraction hook 125 and the base end portion 114a is the swing support point of the discharge plate extraction hook 125. In other words, the length between the swing fulcrum at the storage position of the plate removal hook 125 and the downstream end of the storage portion 116a in the plate storage direction is longer than the length between the claw portion 125a. This is longer than the length between the swing fulcrum and the tip of the extraction hook 125.

  A stopper pin 127, which is a swing restricting member, protrudes from the distal end portion 121b of the discharge plate support member 121 in the vicinity of the proximal end of the discharge plate extraction hook 125. The stopper pin 127 is connected to the discharge plate extraction hook 125. The swaying of the discharged plate extraction hook 125 is restricted so that the claw portion 125a is not moved in the direction toward the distal end side of the guide member 123 from the state where the claw portion 125a is advanced to the storage portion 116a (see FIG. 7).

  Further, the movable body 134 has a detected body 131 (for example, a magnet) attached to the end face on the rodless cylinder 119 side. Then, in the middle of the range in which the plate discharge support member 121 of the rodless cylinder 119 is slidable, the intermediate detection sensor 132 for detecting the detected object 131 is opposed to the end surface 121d via the mounting plate 133. It is attached.

  More specifically, the detected body 131 and the intermediate detection sensor 132 are arranged such that the bent portion of the holding side 2a of the old plate 2 guided downstream by the discharge plate extraction hook 125 when the old plate 2 is discharged is an upper portion of the plate guide 145 described later. A predetermined value set on the upstream side slightly from the end portion on the plate cylinder 12 side (for example, the bent portion on the holding side 2a of the old plate 2 is not locked to the end portion on the upper plate cylinder 12 side of the plate guide 145). The mutual positions are set so that the intermediate detection sensor 132 detects the detection target 131 when the position is reached. In this embodiment, it is set so that the intermediate detection sensor 132 detects the detected body 131 when the old version 2 reaches the position shown in FIG.

  On the other hand, the rodless cylinder 120 is attached with the base end portion 122a side of a U-shaped plate-feeding support member 122 with the opening side facing the distal end side of the second guide frame 113, and the plate-feeding support member 122 is configured to be slidable by a rodless cylinder 120 between a storage position shown in FIG. 12 and a position shown in FIG. The length of the connecting portion 122 c of the plate supply support member 122 is set so that the tip end portion 122 b is slightly higher than the extending portion of the guide member 115.

  The base end side of the new plate holding hook 126, which is a new plate holding member having a claw portion 126a at the tip, can freely swing around the axis in the same direction as the support shaft 111. When the longitudinal direction of the front end portion 122b of the plate supply support member 122 is directed in the direction shown in FIG. 7 to be described later, the new plate holding hook 126 has the claw portion 126a and the base end portion 122a by its own weight. When the longitudinal direction of the front end portion 122b of the plate-feeding support member 122 faces the vertical direction shown in FIG. The claw portion 126a can be retracted from the storage portion 116b by moving so as to overlap the portion 122b.

  That is, the new plate holding hook 126 is positioned on the front end side of the guide frame 113 with respect to the connecting portion 122c of the plate supply support member 122. In other words, the new plate holding hook 126 is upstream of the storage portion 116b in the new plate supply direction when the new plate holding hook 126 is in the storage position. The length between the swing support point of the new plate holding hook 126 and the base end portion 115b is positioned on the downstream side in the new plate supply direction with respect to the base end portion 115b that is the side end portion. The length is longer than the length between the fulcrum and the claw portion 126a, in other words, the length between the swing fulcrum at the storage position of the new plate holding hook 126 and the upstream end of the storage portion 116b in the new plate supply direction. Is longer than the length between the swing fulcrum of the new plate holding hook 126 and the tip.

  A stopper pin 128 that is a swing restricting member of the hook 126 protrudes in the vicinity of the proximal end side of the new plate holding hook 126 at the front end portion 122b of the plate feeding support member 122. The stopper pin 128 is The swinging movement of the new plate holding hook 126 is restricted so that the claw portion 126a of the new plate holding hook 126 is not moved in the direction toward the distal end side of the guide member 115 from the state where the claw portion 126a is advanced to the storage portion 116b (see FIG. 7). ing. A pressing plate 124, which is a contact member, protrudes from a portion between the guide members 114 and 115 of the connecting portion 122 c of the plate supply support member 122.

<Upper first version guide device>
As shown in FIG. 2, the base end side of the pair of swing frames 141 of the upper first plate guide device 140 is located on the upper plate cylinder 12 side with respect to the support shaft 111 of the support frame 102. The upper first plate guide device 140 is connected and supported so as to be swingable around the axis in the same direction as the plate cylinder 12, and the upper first plate guide device 140 has the following structure.

  A fixed guide plate 142 for guiding the movement of the old plate 2 is attached to the swing frame 141. The tip of the upper first plate guide device drive actuator 143 is connected to the swing frame 141 so as to be swingable. The base end side of the upper first plate guide device driving actuator 143 is supported by the support frame 102 so as to be swingable. That is, the upper first plate guide device drive actuator 143 is expanded and contracted to swing the swing frame 141, and the upper first plate guide device 140 is brought close to the upper plate cylinder 12 to guide the new plate 1 and the old plate 2. It can be swung between a guide position (see FIG. 7) and a retracted position (see FIG. 2) separated from the upper plate cylinder 12.

  The middle of the link plate 144 is connected and supported by the swing frame 141 so as to be swingable. A plate guide 145 which is a plate distribution guide is attached to the front end side of the link plate 144. The distal end side of the plate guide drive actuator 146 is connected to the proximal end side of the link plate 144. The base end side of the plate guide drive actuator 146 is supported by the swing frame 141 so as to be swingable. That is, by extending or contracting the plate guide drive actuator 146, the plate guide 145 can be moved between the discharge plate guide position (see FIG. 7) and the new plate guide position (see FIG. 15) via the link plate 144. This is possible (details will be described later).

  A pivot shaft 147 that is pivotable about an axis in the same direction as the upper plate cylinder 12 is supported on the distal end side of the swing frame 141. A base end side of the support plate 148 is connected and fixed to the rotating shaft 147. A guide roller 149 is rotatably provided on the front end side of the support plate 148. The pivot shaft 147 is connected to and supported by a generally U-shaped grip take-out guide 150 oriented in the longitudinal direction along the axial direction of the upper plate cylinder 12. One end side of the connecting plate 151 is connected and fixed to the rotating shaft 147.

  The other end side of the connecting plate 151 is connected to the tip end side of the gripper takeout guide drive actuator 152 so as to be swingable. The proximal end side of the gripping guide driving actuator 152 is supported by the swing frame 141 so as to be swingable. That is, by extending and contracting the gripper takeout guide drive actuator 152, the rotary shaft 147 can be rotated via the connecting plate 151, so that the guide roller 149 and the gripper takeout guide 150 can be moved. is there.

  Further, a positioning plate 153 for positioning the plate in the width direction is attached to each of the pair of swing frames 141.

<Upper second version guide device>
An upper second plate guide device 160 is disposed in the vicinity of the upper plate cylinder 12. The upper second plate guide device 160 is rotatable to the plate guide 145, the inker cover 161 facing the guide surface of the plate guide 145, and the end portion of the inker cover 161 on the upper plate cylinder 12 side. A plurality of guide rollers 162 are provided.

<Upper pressing roller>
An upper pressing roller 171 is disposed in the vicinity of the upper plate cylinder 12 so as to be able to approach and separate from the upper plate cylinder 12.

<Cover>
As shown in FIGS. 2 and 3, the frame 11 is covered with a cover 103 that partitions at least a part between the inside and the outside of the upper printing unit. The cover 103 positions the storage portions 116a and 116b of the upper plate holding device 110 outside the cover 103 at the retracted position of the upper plate holding device 110 shown in FIG. The guide frames 112 and 113, the rodless cylinders 119 and 120, the base ends 121a and 122a of the support members 121 and 122, the upper first plate guide device 140, and the like on the left side in FIG. The gap 103a is positioned at a position corresponding to the base end portions 121a and 122a of the support members 121 and 122 and the guide frames 112 and 113 of the upper plate holding device 110, the rodless cylinders 119 and 120, so A plurality are provided at intervals so as to have.

  That is, the cover 103 is swingably supported with respect to the frame 11 via a support member such as the support arm 101 and the support frame 102, so that at least a part of the space formed between the pair of frames 11 is formed. The upper plate holding device 110 can move between a closed position for closing and an open position for opening the space, and the upper plate holding device 110 is operated relative to the cover 103 via the support frame 102 (see FIG. 7). ), The cover 103 can be swung even when it is in the closed position.

  The cover 103 disposed between the left and right guide frames 112 and 113 of the upper plate holding device 110 is shorter than the length of the guide frames 112 and 113 of the upper plate holding device 110 in the longitudinal direction. The plate holder 110 can swing with a maximum swing radius smaller than the maximum swing radius.

[Automatic version change]
The upper plate exchanging apparatus 100 is driven and controlled by a control device 301 such as a microcomputer shown in FIG. 5 together with a drive motor 312 as a drive device for rotating the entire plate cylinder of the printing unit.

  As shown in FIG. 5, the control device 301 detects the position of a plate replacement button (switch) 302 provided on an operation panel (not shown), the rotary encoder 303 attached to the motor of the machine, and the old plate 2. The intermediate detection sensor 132, the auto switch 305 for the plate guide drive actuator 146, and the auto switch 306 for the old plate moving rodless cylinder 119 are electrically connected to receive necessary signals from each of them.

  Further, an electromagnetic valve 307 for the upper plate holding device drive actuator 130, an electromagnetic valve 308 for the rodless cylinder 119 as a moving means of the old plate 2, an electromagnetic valve 309 for the guide device drive actuator 143, and the printing plate guide Electromagnetic valve 310 for drive actuator 146, electromagnetic valve 311 for pressure roller drive actuator (not shown), drive motor 312, electromagnetic valve 313 for plate end holding means drive actuator (not shown), electromagnetic for gripper takeout guide drive actuator 152 It is electrically connected to the valve 314 and outputs a control signal to each of them as necessary.

<Switching to operating position>
Using the flowchart shown in FIG. 6, the control operation of the plate exchange work by the plate exchange apparatus shown in FIGS. 1 to 4 and FIGS. 7 to 14 will be described in detail.

  As shown in FIG. 6, when automatic plate replacement is performed, it is first determined whether or not the plate replacement button 302 is ON (step S1). For example, when printing is being performed and the plate exchange button 302 is OFF (NO), the control device 301 returns to step S1.

  When printing is performed, the upper plate holding device 110 is in the retracted position so that the guide frames 112 and 113 and the guide members 114 and 115 are directed vertically as shown in FIG. The downstream side of the portion 116a in the discharge plate storage direction is positioned below the upstream side in the discharge plate storage direction, and the upstream side of the storage portion 116b in the new plate supply direction is positioned below the downstream side in the new plate supply direction.

  Therefore, when the new plate 1 is stored in the storage position, the abutting plate is placed in the storage portion 116b between the guide members 114 and 115 of the upper plate holding device 110 in the above-described state with the bottom side facing downward. The new edition 1 is inserted while being applied to 118, and the new edition 1 is stored in the storage position.

  At this time, since the tip portions 121b and 122b of the support members 121 and 122 of the upper plate holding device 110 are positioned so that the longitudinal direction is directed in the vertical direction, the hooks 125 and 126 are retracted from the storage portions 116a and 116b by their own weight. It is immersed so that it may overlap with the front end portions 121b and 122b of the support members 121 and 122.

  On the other hand, when the plate exchange button 302 is ON in step S1, a control signal is output to the upper plate holding device drive actuator electromagnetic valve 307 to shorten the upper plate holding device drive actuator 130 (step S2). . As a result, the guide frames 112 and 113 swing around the support shaft 111 so that the leading ends of the guide members 114 and 115 face the upper plate cylinder 12 side, and the upper plate holding device 110 moves and is set to the operating position. Is done.

  At this time, the downstream side in the discharge plate storage direction of the storage portion 116a is positioned above the upstream side in the discharge plate storage direction, and the upstream side in the new plate supply direction of the storage portion 116b is positioned above the downstream side in the new plate supply direction. The support members 121 and 122 are inclined so that the opening side is directed downward. For this reason, after the hooks 125 and 126 move so as to advance the claw portions 125a and 126a into the storage portions 116a and 116b, the movement is restricted by the stopper pins 127 and 128 in the advanced state. . As a result, the claw portion 126a of the new version holding hook 126 engages with the bottom side of the new version 1 and holds the new version 1 without dropping.

  At the same time, a control signal is outputted to the solenoid valve 308 for the plate displacement rodless cylinder, and the plate displacement rodless cylinder 119 is operated to move the plate displacement support member 121 from the position shown in FIG. 2 to the guide frame 112 shown in FIG. Is moved to the leading end side (upstream side in the discharging plate storing direction) (step S3). Subsequently, a control signal is output to the solenoid valve 309 for the upper first plate guide device drive actuator, the upper first plate guide device drive actuator 143 is extended to swing the swing frame 141, and the guide device 140 is changed to FIG. The guide position is moved to (4).

  Subsequently, a control signal is output to the solenoid valve 310 for the printing plate guide drive actuator, the printing plate guide drive actuator 146 is shortened to swing the link plate 144, and the printing plate guide 145 is arranged at the discharge plate guide position. More specifically, it is a position where the old plate 2 discharged from the upper plate cylinder 12 can be guided to the storage portion 116a of the upper plate holding device 110, and as shown in FIG. The tip of the upper plate cylinder 12 is moved so as to be positioned on the inker cover 161 side (step S5).

<Storage of waste plates>
Next, a control signal is output to the drive motor 312 to rotate the upper plate cylinder 12 in the reverse direction (step S6). Subsequently, a control signal is output to the electromagnetic valve 311 for the pressure roller drive actuator, and the pressure roller drive actuator (not shown) is extended to move the pressure roller 171 to the operating position (the two-dot chain line position in FIG. 7). The pressing roller 171 is pressed against the upper plate cylinder 12 (step S7), and a control signal is output to the electromagnetic valve 313 for the plate end holding means driving actuator to shorten the plate end holding means driving actuator (not shown). The holding of the end of the bottom side 2b and the holding of the end of the holding side 2a of the old plate 2 by the plate end holding means are released (step S8).

  When the bottom side 2b of the old plate 2 is thus ejected from the upper plate cylinder 12, the old plate 2 is guided between the guide plate 142 of the upper first plate guide device 140 and the printing plate guide 145, while It is fed from the butt side 2b into the storage portion 116a between the guide frames 112 and 113 of the plate holding device 110 and the guide member 123. At this time, since the plate removal hook 125 is supported so as to be swingable, as the old plate 2 is fed, it is pushed by the bottom side 2b of the old plate 2 and swings as it is. When it passes, it moves so as to return due to its own weight (see FIG. 7).

  It should be noted that the holding of the end portion of the plate bottom side 2b and the holding of the end portion of the holding side 2a by the plate end holding means is performed by the upper plate cylinder 12 rather than the end portion of the inker cover 161 facing the upper plate cylinder 12. This is performed upstream in the reverse rotation direction.

  In this way, the upper plate cylinder 12 is rotated in the reverse direction, and whether or not the bent portion on the holding side 2a of the old plate 2 has approached the upper first plate guide device 140 is input to the control device 301. Judgment is made from the rotation speed signal (step S9), and if the bending portion on the holding side 2a of the old plate 2 is not within the predetermined range with respect to the upper first plate guide device 140 (NO), the flow returns to step S9. On the other hand, if the bent portion on the holding side 2a of the old plate 2 is close to a predetermined range with respect to the upper first plate guide device 140 (YES), the process proceeds to step S10 and the control is performed to the electromagnetic roller 311 for the pressure roller drive actuator. A signal is output, the pressing roller 171 is moved to the retracted position (solid line position in FIG. 7) (step S10), and the old plate 2 is pulled away from the upper plate cylinder 12.

  Subsequently, a control signal is output to the gripper takeout guide drive actuator solenoid valve 314 to shorten the gripper takeout guide drive actuator 152 (step S11). As a result, as shown in FIG. 7, the guide roller 149 and the gripper takeout guide 150 swing around the rotation shaft 147 counterclockwise in FIG. 7, and the gripper takeout guide 150 moves the gripper side 2a of the old plate 2 over the upper plate. In order to move the cylinder 12 to the outside in the radial direction, as shown in FIG. 7, the bent side 2 a of the old plate 2 is surely detached from the upper plate cylinder 12.

  When the old plate 2 is completely removed from the upper plate cylinder 12, a control signal is output to the drive motor 312 to stop the rotation of the upper plate cylinder 12 (step S12). Subsequently, a control signal is output to the solenoid valve 314 for the gripper takeout guide drive actuator, the gripper takeout guide drive actuator 152 is extended, and the guide roller 149 and the gripper takeout guide 150 are returned to the retracted position as shown in FIG. Step S13).

  Subsequently, a control signal is output to the solenoid valve 310 for the printing plate guide drive actuator, and as shown in FIG. 9, the printing plate guide drive actuator 146 is extended to swing the link plate 144 counterclockwise in FIG. The printing plate guide 145 is moved to the new plate guide position (step S14).

  Subsequently, a control signal is output to the solenoid valve 308 for the plate displacement moving rodless cylinder (step S15), and the plate displacement moving rodless cylinder 119 is operated as shown in FIG. While moving to the end side (downstream side in the plate discharge storage direction), it is determined whether or not the intermediate detection sensor 132 has detected the detected body 131 provided on the moving element 134 of the rodless cylinder 119 (step S16).

  When the plate removal support member 121 is moved to the proximal end side of the guide frame 112, the claw portion 125a of the plate removal hook 125 is engaged with the bottom side 2b of the old plate 2, and the old plate 2 is pulled up to guide frame 112, It moves toward the storage position of the storage part 116a between 113 and the guide member 123. Thereby, the old version 2 moves to the storage position side of the storage portion 116a.

  At this time, since the swinging plate extraction hook 125 is restricted by the stopper pin 127 from swinging upstream in the discharging plate storage direction, the old plate 2 can be reliably pulled up.

  If the detected object 131 is not detected in step S16 (NO), the process returns to step S16. On the other hand, when the detection target 131 is detected by the intermediate detection sensor 132 (YES), a control signal is output to the solenoid valve 308 for the plate displacement moving rodless cylinder (step S17), and the plate displacement moving rodless cylinder 119 is operated. The plate discharge support member 121 is moved upstream in the plate discharge storage direction.

  Next, it is determined again whether the detection target 131 provided on the moving element 134 of the rodless cylinder 119 has been detected by the intermediate detection sensor 132 (step S18).

  Here, the operation of the old version 2 from step S16 to step S18 will be described in detail with reference to FIG. In this embodiment, the plate guide 145 is in the position indicated by the two-dot chain line in FIG. 14A, and the bent portion on the holding side 2a of the old plate 2 is in the position indicated by the solid line in FIG. When the extraction hook 125 is at the position indicated by the solid line in FIG. 14B, in other words, when the end of the bottom side 2b of the old plate 2 is at the position C shown in FIG. Is set to be.

  When the detection target 131 is detected by the intermediate detection sensor 132, the plate displacement moving rodless cylinder 119 starts to move upstream in the discharge plate storage direction in step S17. Actually, the intermediate detection sensor 132 is detected by the intermediate detection sensor 132. Since it takes a predetermined time from the detection of 131 until the discharge plate moving rodless cylinder 119 starts moving to the upstream side in the discharge plate storage direction in accordance with the process of step S17, the holding side 2a of the old plate 2 For example, as shown by a two-dot chain line in FIGS. 14 (a) and 14 (b), the bent portion and the printing plate guide 145 and the discharged plate extraction hook 125 have the end portion on the bottom side 2b of the old plate 2 shown in FIG. ) Until the position D shown in FIG. 2 is reached, and then the slider 134 of the rodless cylinder 119 starts to move upstream in the discharge plate storing direction. Therefore, the end of the bottom side 2b of the old plate 2 that has once passed the position C shown in FIG. 14B passes through the position C again after reaching the position D shown in FIG. 14B. As a result, the intermediate detection sensor 132 detects the detection target 131 again. Step S18 is a process using this fact.

  Continue to explain the old version 2 discharge process. If the detected object 131 is not detected in step S18 (NO), the process returns to step S18 repeatedly. On the other hand, if the detection target 131 is detected by the intermediate detection sensor 132 (YES), a control signal is output to the solenoid valve 310 for the plate guide drive actuator to shorten the plate guide drive actuator 146 (step S19). As shown in FIG. 12, the link plate 144 is swung clockwise in FIG. 12, and the plate guide 145 is moved to the discharge guide position.

  Subsequently, whether or not the shortening operation of the plate guide drive actuator 146 is completed based on a signal output from the auto switch 304 for the plate guide drive actuator 146, in other words, the plate guide drive actuator 146 is shortened. It is determined whether or not the stroke end has been reached (step S20). If the shortening operation has not been completed (NO), the process returns to step S20. On the other hand, when the end of the shortening operation of the plate guide drive actuator 146 is detected (YES), a control signal is output to the solenoid valve 308 for the plate displacement rodless cylinder (step S21), and as shown in FIG. The moving rodless cylinder 119 is actuated to move the discharged plate support member 121 to the proximal end side of the guide frame 112 again.

Subsequently, based on the signal output from the auto switch 305 for the plate displacement moving rodless cylinder 119, whether or not the storage of the old plate 2 in the plate displacement storage section 116a is completed, in other words, the movement of the plate displacement moving rodless cylinder 119. It is determined whether or not the child 134 has reached the proximal end portion on the downstream side in the discharging direction of the discharging plate moving rodless cylinder 119 (step S22). If the storage of the old plate 2 is not completed (NO), the process returns to step S22. On the other hand, when the storage of the old version 2 has been completed (YES), the discharging operation of the old version 2 is ended.
The discharging operation of the old version 2 according to the present embodiment is executed by the above steps.

<Installation of new version>
As shown in FIG. 15, the new plate 1 is mounted by extending the plate guide drive actuator 146 to swing the link plate 144 and moving the new plate 1 held in the storage portion 116b to the upper plate cylinder 12. When the plate guide 145 is moved to the new plate guide position to be supplied and the pressing roller 171 is moved to the operating position (the position indicated by the two-dot chain line in FIG. 15) and pressed against the upper plate cylinder 12, the new plate moving rodless cylinder When the plate feeding support member 122 is moved from the storage position of the storage portion 116 a to the tip side of the second guide frame 113 (downstream in the new plate supply direction) by operating 120, the pressing plate 124 moves to the bottom side of the new plate 1. The new plate 1 is sent out to the upper plate cylinder 12 side (downstream in the new plate supply direction).

  In this way, when the plate supply support member 122 is moved to the front end side of the guide frame 113 and the new plate 1 is sent out to the upper plate cylinder 12 side, the new plate holding hook 126 is engaged with the hooking portion 115a of the guide member 115. Since the new plate 1 is hooked and touched and swings so as to retract from the storage portion 116 b, the bottom side is released from the lock by the new plate holding hook 126, and the left and right positioning plates 153 of the upper first plate guide device 140 are used. It is fed out in a state where it is accurately positioned in the width direction, and the gripping bending portion comes into contact with the pressing roller 171 and stops temporarily.

  Subsequently, when the upper plate cylinder 12 is rotated forward, the new plate 1 is wound around the upper plate cylinder 12 from the bending portion and attached.

  At this time, since the upper plate holding device 110 can be moved from the retracted position to the operating position without opening the cover 103, it is possible to drop the work tool or the like into the printing unit during plate replacement work. Can be prevented.

<Switch to retracted position>
When the delivery of the new plate 1 is completed as described above, as shown in FIG. 16, the upper first plate guide device drive actuator 143 is contracted to swing the swing frame 141 and the guide device 140 is moved to the retracted position. At the same time, the new plate moving rodless cylinder 120 is operated to move the plate supply support member 122 to the proximal end side of the guide frame 113, and the upper plate holding device drive actuator 130 is extended to swing the guide frames 112, 113. Then, the upper plate holding device 110 is moved to the retracted position. The guide frames 112 and 113 and the guide members 114 and 115 swing so that the longitudinal direction is directed in the vertical direction, and the downstream side of the storage portion 116a in the discharge plate storage direction is located lower than the upstream side in the discharge plate storage direction, and the storage The upstream side of the part 116b in the new plate supply direction is positioned below the downstream side of the new plate supply direction.

  At this time, since the front end portions 121b and 122b of the support members 121 and 122 of the upper plate holding device 110 are positioned so that the longitudinal direction is directed in the vertical direction, the hooks 125 and 126 are retracted from the storage portions 116a and 116b by their own weight. And fits so as to overlap the tip portions 121b and 122b of the support members 121 and 122.

  The effects of the plate changer according to this embodiment will be described. According to the present embodiment, the position of the bent portion on the holding side 2a of the old plate 2 is detected via the detected body 131 attached to the moving element 134 of the discharge plate moving rodless cylinder 119, and the holding side 2a of the old plate 2 is detected. Since the positions of the slider 134 and the plate guide 145 of the discharge plate moving rodless cylinder 119 can be controlled in accordance with the position of the bent portion of the old plate 2, the bent portion on the holding side 2a of the old plate 2 is the upper portion of the plate guide 145. The plate guide 145 can be surely escaped from the bent portion of the holding side 2a of the old plate 2 when it is in the vicinity of the front end on the plate cylinder 12 side and is not locked to the plate guide 145. The old plate 2 can be stably extracted without being affected by the removal of the old plate 2 or the change in the operation speed of the printing plate guide 145.

  In addition, since the bending state of the old plate 2 is changed by printing, it has been difficult to control the position of the bending portion on the holding side 2a in the state where the bending portion on the holding side 2a of the old plate 2 is not restrained. However, if the bent portion of the holding side 2a of the old plate 2 is once locked to the tip of the upper plate cylinder 12 of the printing plate guide 145, the old plate 2 in the curved state can be smoothed, and the old plate 2 It is possible to manage the printing plate without being affected by the state of the plate. Furthermore, since the restricting means is a plate guide, there is an effect that the number of parts does not increase.

  In this embodiment, after the plate holding means is moved downstream in the plate discharging direction, the plate holding means is printed when the end of the printing plate in the plate discharging direction is detected by the plate detecting means. After moving the plate discharging direction upstream, the restricting means (press plate guide) is moved from the restricting position (new plate guiding position) to the retracted position (old plate guiding position), and the discharging plate holding means is moved downstream in the plate discharging direction. However, after the plate holding means is moved downstream in the plate discharge direction, the plate detecting means detects the end of the plate upstream in the plate discharge direction. The guide may be moved from the restriction position (new version guide position) to the retracted position (old version guide position). In this way, it is not necessary to switch the discharge direction.

  Further, the restricting means may be a separate member from the plate guide.

  Further, in the present embodiment, the detected object is supported by the discharged plate holding means that moves by driving the discharged plate moving means, and the intermediate detection sensor is supported by the mounting plate, but the intermediate detection sensor is driven by the discharged plate moving means. It is also possible to support the detected plate holding means on the mounting plate while supporting the discharged plate holding means.

  In the present embodiment, the plate handling apparatus according to the present invention has been disclosed as an example of being used in a plate changer capable of discharging the old plate 2 from the plate cylinder and supplying a new plate to the plate cylinder. Various modifications can be made without departing from the gist of the present invention, such as application to a plate discharge device having only a function of discharging the old plate 2 from the plate cylinder.

  The present invention is suitable for application to a plate handling apparatus provided with a plate discharge device for discharging a plate mounted on a plate cylinder.

1 is a schematic configuration diagram of a double-sided printing machine according to an embodiment of the present invention. It is a schematic block diagram of the upper plate exchange apparatus which concerns on embodiment of this invention. It is the extraction enlarged view seen from the arrow A direction of FIG. It is the extraction enlarged view seen from the arrow B direction of FIG. It is a block diagram which shows the structure of control of the plate discharge | emission in the plate change apparatus which concerns on embodiment of this invention. It is a flowchart which shows the process which concerns on the control of plate discharge | emission in the plate change apparatus which concerns on embodiment of this invention. It is procedure explanatory drawing of the upper plate exchange apparatus which concerns on embodiment of this invention. It is procedure explanatory drawing following FIG. It is procedure explanatory drawing following FIG. FIG. 10 is an explanatory diagram of a procedure following FIG. 9. FIG. 11 is an explanatory diagram of a procedure following FIG. 10. It is procedure explanatory drawing following FIG. FIG. 13 is an explanatory diagram of a procedure following FIG. 12. It is the elements on larger scale of the plate exchange apparatus which concerns on embodiment of this invention. It is procedure explanatory drawing which concerns on mounting | wearing of the new version of the plate exchange apparatus which concerns on embodiment of this invention. It is procedure explanatory drawing which concerns on the switch to the evacuation position of the plate exchange apparatus which concerns on embodiment of this invention. It is a schematic block diagram of the conventional plate exchange apparatus. FIG. 18 is an explanatory diagram of a procedure following FIG. 17. It is procedure explanatory drawing following FIG. It is procedure explanatory drawing following FIG. FIG. 21 is an explanatory diagram of a procedure following FIG. 20.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 New version 2 Old version 2a The side of the old version 2b The bottom side of the old version 11 Frame 12 Upper plate cylinder 13 Lower plate cylinder 14 Upper rubber cylinder 15 Lower rubber cylinder 100 Upper plate changer 101 Support arm 102 Support frame 103 Cover 103a Gap 110 Upper plate Holding device 111 Support shaft 112, 113 Guide frame 114 Guide member 114a Guide member base end portion 115 Guide member 115a Hook portion 115b Guide member base end portion 116a, 116b Storage portion 117 Guide roller 118 Contact plate 119, 120 Rodless cylinder 121, 122 Support member 121a, 122a Support member base end part 121b, 122b Support member front end part 121c, 122c Support member connecting part 123 Guide member 124 Press plate 125, 126 Hook 125a, 126a Claw part 27, 128 Stopper pin 129 Link plate 130 Actuator 140 Upper first plate guide device 141 Oscillating frame 142 Guide plate 143 Actuator 144 Link plate 145 Printing plate guide 146 Actuator 147 Rotating shaft 148 Support shaft 149 Guide roller 150 Add-on guide 151 Connecting plate 152 Actuator 153 Positioning plate 160 Upper second plate guide device 161 Inker cover 162 Guide roller 171 Upper press roller 200 Lower plate changer 210 Lower plate holding device 240 Lower first plate guide device 260 Lower second plate guide device 271 Lower portion Pressure roller

Claims (4)

In a plate handling apparatus provided with a plate discharging means for discharging a printing plate having a bent portion at the upstream end of the plate discharging direction of the printing plate from the plate cylinder,
The plate discharging means,
A plate holding means for holding a printing plate discharged from the plate cylinder;
A plate-removing means for moving the plate-removing holding means from a holding position for holding the printing plate and moving the printing plate in a direction away from the plate cylinder;
A restricting position that is provided upstream of the plate discharge means in the discharge plate storing direction and restricts insertion of the bent portion of the printing plate discharged between the plate cylinder and a guide member adjacent to the plate cylinder. And a restricting means that moves between a spaced position spaced from the regulated position;
Printing plate position detection means for detecting the position of the upstream end of the printing plate in the plate discharge direction;
The plate holding means is moved downstream in the plate discharge direction with the restriction means positioned at the restriction position, and then the upstream end of the plate is detected by the plate position detection means. And a control means for controlling the control means to move the control means from the control position to the separation position. The control means controls the plate movement means to move the plate holding means upstream in the plate discharge direction when the plate position detection means detects the upstream end of the plate in the plate discharge direction. After being operated, when the restricting means is moved from the restricting position to the retracted position, the discharged plate moving means is operated so as to move the discharged plate holding means downstream in the printing plate discharge direction. The plate handling apparatus according to claim 1. A plate supply means for supplying a printing plate to the plate cylinder;
The restricting means is a printing plate guide that guides the printing plate supplied from the printing plate supply means to the printing drum and guides the printing plate discharged from the printing cylinder to the printing plate discharge means. 2. A plate handling apparatus according to claim 1, wherein 2. The plate handling apparatus according to claim 1, wherein the plate position detecting means is a detecting means for detecting a position of the discharged plate holding means.

Images